diff options
Diffstat (limited to 'deps/flac-1.3.2/src/libFLAC/stream_encoder.c')
| -rw-r--r-- | deps/flac-1.3.2/src/libFLAC/stream_encoder.c | 4549 |
1 files changed, 4549 insertions, 0 deletions
diff --git a/deps/flac-1.3.2/src/libFLAC/stream_encoder.c b/deps/flac-1.3.2/src/libFLAC/stream_encoder.c new file mode 100644 index 0000000..037b8cb --- /dev/null +++ b/deps/flac-1.3.2/src/libFLAC/stream_encoder.c @@ -0,0 +1,4549 @@ +/* libFLAC - Free Lossless Audio Codec library + * Copyright (C) 2000-2009 Josh Coalson + * Copyright (C) 2011-2016 Xiph.Org Foundation + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * - Neither the name of the Xiph.org Foundation nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif + +#include <limits.h> +#include <stdio.h> +#include <stdlib.h> /* for malloc() */ +#include <string.h> /* for memcpy() */ +#include <sys/types.h> /* for off_t */ +#ifdef _WIN32 +#include <windows.h> /* for GetFileType() */ +#include <io.h> /* for _get_osfhandle() */ +#endif +#include "share/compat.h" +#include "FLAC/assert.h" +#include "FLAC/stream_decoder.h" +#include "protected/stream_encoder.h" +#include "private/bitwriter.h" +#include "private/bitmath.h" +#include "private/crc.h" +#include "private/cpu.h" +#include "private/fixed.h" +#include "private/format.h" +#include "private/lpc.h" +#include "private/md5.h" +#include "private/memory.h" +#include "private/macros.h" +#if FLAC__HAS_OGG +#include "private/ogg_helper.h" +#include "private/ogg_mapping.h" +#endif +#include "private/stream_encoder.h" +#include "private/stream_encoder_framing.h" +#include "private/window.h" +#include "share/alloc.h" +#include "share/private.h" + + +/* Exact Rice codeword length calculation is off by default. The simple + * (and fast) estimation (of how many bits a residual value will be + * encoded with) in this encoder is very good, almost always yielding + * compression within 0.1% of exact calculation. + */ +#undef EXACT_RICE_BITS_CALCULATION +/* Rice parameter searching is off by default. The simple (and fast) + * parameter estimation in this encoder is very good, almost always + * yielding compression within 0.1% of the optimal parameters. + */ +#undef ENABLE_RICE_PARAMETER_SEARCH + + +typedef struct { + FLAC__int32 *data[FLAC__MAX_CHANNELS]; + unsigned size; /* of each data[] in samples */ + unsigned tail; +} verify_input_fifo; + +typedef struct { + const FLAC__byte *data; + unsigned capacity; + unsigned bytes; +} verify_output; + +typedef enum { + ENCODER_IN_MAGIC = 0, + ENCODER_IN_METADATA = 1, + ENCODER_IN_AUDIO = 2 +} EncoderStateHint; + +static struct CompressionLevels { + FLAC__bool do_mid_side_stereo; + FLAC__bool loose_mid_side_stereo; + unsigned max_lpc_order; + unsigned qlp_coeff_precision; + FLAC__bool do_qlp_coeff_prec_search; + FLAC__bool do_escape_coding; + FLAC__bool do_exhaustive_model_search; + unsigned min_residual_partition_order; + unsigned max_residual_partition_order; + unsigned rice_parameter_search_dist; + const char *apodization; +} compression_levels_[] = { + { false, false, 0, 0, false, false, false, 0, 3, 0, "tukey(5e-1)" }, + { true , true , 0, 0, false, false, false, 0, 3, 0, "tukey(5e-1)" }, + { true , false, 0, 0, false, false, false, 0, 3, 0, "tukey(5e-1)" }, + { false, false, 6, 0, false, false, false, 0, 4, 0, "tukey(5e-1)" }, + { true , true , 8, 0, false, false, false, 0, 4, 0, "tukey(5e-1)" }, + { true , false, 8, 0, false, false, false, 0, 5, 0, "tukey(5e-1)" }, + { true , false, 8, 0, false, false, false, 0, 6, 0, "tukey(5e-1);partial_tukey(2)" }, + { true , false, 12, 0, false, false, false, 0, 6, 0, "tukey(5e-1);partial_tukey(2)" }, + { true , false, 12, 0, false, false, false, 0, 6, 0, "tukey(5e-1);partial_tukey(2);punchout_tukey(3)" } + /* here we use locale-independent 5e-1 instead of 0.5 or 0,5 */ +}; + + +/*********************************************************************** + * + * Private class method prototypes + * + ***********************************************************************/ + +static void set_defaults_(FLAC__StreamEncoder *encoder); +static void free_(FLAC__StreamEncoder *encoder); +static FLAC__bool resize_buffers_(FLAC__StreamEncoder *encoder, unsigned new_blocksize); +static FLAC__bool write_bitbuffer_(FLAC__StreamEncoder *encoder, unsigned samples, FLAC__bool is_last_block); +static FLAC__StreamEncoderWriteStatus write_frame_(FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], size_t bytes, unsigned samples, FLAC__bool is_last_block); +static void update_metadata_(const FLAC__StreamEncoder *encoder); +#if FLAC__HAS_OGG +static void update_ogg_metadata_(FLAC__StreamEncoder *encoder); +#endif +static FLAC__bool process_frame_(FLAC__StreamEncoder *encoder, FLAC__bool is_fractional_block, FLAC__bool is_last_block); +static FLAC__bool process_subframes_(FLAC__StreamEncoder *encoder, FLAC__bool is_fractional_block); + +static FLAC__bool process_subframe_( + FLAC__StreamEncoder *encoder, + unsigned min_partition_order, + unsigned max_partition_order, + const FLAC__FrameHeader *frame_header, + unsigned subframe_bps, + const FLAC__int32 integer_signal[], + FLAC__Subframe *subframe[2], + FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents[2], + FLAC__int32 *residual[2], + unsigned *best_subframe, + unsigned *best_bits +); + +static FLAC__bool add_subframe_( + FLAC__StreamEncoder *encoder, + unsigned blocksize, + unsigned subframe_bps, + const FLAC__Subframe *subframe, + FLAC__BitWriter *frame +); + +static unsigned evaluate_constant_subframe_( + FLAC__StreamEncoder *encoder, + const FLAC__int32 signal, + unsigned blocksize, + unsigned subframe_bps, + FLAC__Subframe *subframe +); + +static unsigned evaluate_fixed_subframe_( + FLAC__StreamEncoder *encoder, + const FLAC__int32 signal[], + FLAC__int32 residual[], + FLAC__uint64 abs_residual_partition_sums[], + unsigned raw_bits_per_partition[], + unsigned blocksize, + unsigned subframe_bps, + unsigned order, + unsigned rice_parameter, + unsigned rice_parameter_limit, + unsigned min_partition_order, + unsigned max_partition_order, + FLAC__bool do_escape_coding, + unsigned rice_parameter_search_dist, + FLAC__Subframe *subframe, + FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents +); + +#ifndef FLAC__INTEGER_ONLY_LIBRARY +static unsigned evaluate_lpc_subframe_( + FLAC__StreamEncoder *encoder, + const FLAC__int32 signal[], + FLAC__int32 residual[], + FLAC__uint64 abs_residual_partition_sums[], + unsigned raw_bits_per_partition[], + const FLAC__real lp_coeff[], + unsigned blocksize, + unsigned subframe_bps, + unsigned order, + unsigned qlp_coeff_precision, + unsigned rice_parameter, + unsigned rice_parameter_limit, + unsigned min_partition_order, + unsigned max_partition_order, + FLAC__bool do_escape_coding, + unsigned rice_parameter_search_dist, + FLAC__Subframe *subframe, + FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents +); +#endif + +static unsigned evaluate_verbatim_subframe_( + FLAC__StreamEncoder *encoder, + const FLAC__int32 signal[], + unsigned blocksize, + unsigned subframe_bps, + FLAC__Subframe *subframe +); + +static unsigned find_best_partition_order_( + struct FLAC__StreamEncoderPrivate *private_, + const FLAC__int32 residual[], + FLAC__uint64 abs_residual_partition_sums[], + unsigned raw_bits_per_partition[], + unsigned residual_samples, + unsigned predictor_order, + unsigned rice_parameter, + unsigned rice_parameter_limit, + unsigned min_partition_order, + unsigned max_partition_order, + unsigned bps, + FLAC__bool do_escape_coding, + unsigned rice_parameter_search_dist, + FLAC__EntropyCodingMethod *best_ecm +); + +static void precompute_partition_info_sums_( + const FLAC__int32 residual[], + FLAC__uint64 abs_residual_partition_sums[], + unsigned residual_samples, + unsigned predictor_order, + unsigned min_partition_order, + unsigned max_partition_order, + unsigned bps +); + +static void precompute_partition_info_escapes_( + const FLAC__int32 residual[], + unsigned raw_bits_per_partition[], + unsigned residual_samples, + unsigned predictor_order, + unsigned min_partition_order, + unsigned max_partition_order +); + +static FLAC__bool set_partitioned_rice_( +#ifdef EXACT_RICE_BITS_CALCULATION + const FLAC__int32 residual[], +#endif + const FLAC__uint64 abs_residual_partition_sums[], + const unsigned raw_bits_per_partition[], + const unsigned residual_samples, + const unsigned predictor_order, + const unsigned suggested_rice_parameter, + const unsigned rice_parameter_limit, + const unsigned rice_parameter_search_dist, + const unsigned partition_order, + const FLAC__bool search_for_escapes, + FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents, + unsigned *bits +); + +static unsigned get_wasted_bits_(FLAC__int32 signal[], unsigned samples); + +/* verify-related routines: */ +static void append_to_verify_fifo_( + verify_input_fifo *fifo, + const FLAC__int32 * const input[], + unsigned input_offset, + unsigned channels, + unsigned wide_samples +); + +static void append_to_verify_fifo_interleaved_( + verify_input_fifo *fifo, + const FLAC__int32 input[], + unsigned input_offset, + unsigned channels, + unsigned wide_samples +); + +static FLAC__StreamDecoderReadStatus verify_read_callback_(const FLAC__StreamDecoder *decoder, FLAC__byte buffer[], size_t *bytes, void *client_data); +static FLAC__StreamDecoderWriteStatus verify_write_callback_(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data); +static void verify_metadata_callback_(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data); +static void verify_error_callback_(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data); + +static FLAC__StreamEncoderReadStatus file_read_callback_(const FLAC__StreamEncoder *encoder, FLAC__byte buffer[], size_t *bytes, void *client_data); +static FLAC__StreamEncoderSeekStatus file_seek_callback_(const FLAC__StreamEncoder *encoder, FLAC__uint64 absolute_byte_offset, void *client_data); +static FLAC__StreamEncoderTellStatus file_tell_callback_(const FLAC__StreamEncoder *encoder, FLAC__uint64 *absolute_byte_offset, void *client_data); +static FLAC__StreamEncoderWriteStatus file_write_callback_(const FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], size_t bytes, unsigned samples, unsigned current_frame, void *client_data); +static FILE *get_binary_stdout_(void); + + +/*********************************************************************** + * + * Private class data + * + ***********************************************************************/ + +typedef struct FLAC__StreamEncoderPrivate { + unsigned input_capacity; /* current size (in samples) of the signal and residual buffers */ + FLAC__int32 *integer_signal[FLAC__MAX_CHANNELS]; /* the integer version of the input signal */ + FLAC__int32 *integer_signal_mid_side[2]; /* the integer version of the mid-side input signal (stereo only) */ +#ifndef FLAC__INTEGER_ONLY_LIBRARY + FLAC__real *real_signal[FLAC__MAX_CHANNELS]; /* (@@@ currently unused) the floating-point version of the input signal */ + FLAC__real *real_signal_mid_side[2]; /* (@@@ currently unused) the floating-point version of the mid-side input signal (stereo only) */ + FLAC__real *window[FLAC__MAX_APODIZATION_FUNCTIONS]; /* the pre-computed floating-point window for each apodization function */ + FLAC__real *windowed_signal; /* the integer_signal[] * current window[] */ +#endif + unsigned subframe_bps[FLAC__MAX_CHANNELS]; /* the effective bits per sample of the input signal (stream bps - wasted bits) */ + unsigned subframe_bps_mid_side[2]; /* the effective bits per sample of the mid-side input signal (stream bps - wasted bits + 0/1) */ + FLAC__int32 *residual_workspace[FLAC__MAX_CHANNELS][2]; /* each channel has a candidate and best workspace where the subframe residual signals will be stored */ + FLAC__int32 *residual_workspace_mid_side[2][2]; + FLAC__Subframe subframe_workspace[FLAC__MAX_CHANNELS][2]; + FLAC__Subframe subframe_workspace_mid_side[2][2]; + FLAC__Subframe *subframe_workspace_ptr[FLAC__MAX_CHANNELS][2]; + FLAC__Subframe *subframe_workspace_ptr_mid_side[2][2]; + FLAC__EntropyCodingMethod_PartitionedRiceContents partitioned_rice_contents_workspace[FLAC__MAX_CHANNELS][2]; + FLAC__EntropyCodingMethod_PartitionedRiceContents partitioned_rice_contents_workspace_mid_side[FLAC__MAX_CHANNELS][2]; + FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents_workspace_ptr[FLAC__MAX_CHANNELS][2]; + FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents_workspace_ptr_mid_side[FLAC__MAX_CHANNELS][2]; + unsigned best_subframe[FLAC__MAX_CHANNELS]; /* index (0 or 1) into 2nd dimension of the above workspaces */ + unsigned best_subframe_mid_side[2]; + unsigned best_subframe_bits[FLAC__MAX_CHANNELS]; /* size in bits of the best subframe for each channel */ + unsigned best_subframe_bits_mid_side[2]; + FLAC__uint64 *abs_residual_partition_sums; /* workspace where the sum of abs(candidate residual) for each partition is stored */ + unsigned *raw_bits_per_partition; /* workspace where the sum of silog2(candidate residual) for each partition is stored */ + FLAC__BitWriter *frame; /* the current frame being worked on */ + unsigned loose_mid_side_stereo_frames; /* rounded number of frames the encoder will use before trying both independent and mid/side frames again */ + unsigned loose_mid_side_stereo_frame_count; /* number of frames using the current channel assignment */ + FLAC__ChannelAssignment last_channel_assignment; + FLAC__StreamMetadata streaminfo; /* scratchpad for STREAMINFO as it is built */ + FLAC__StreamMetadata_SeekTable *seek_table; /* pointer into encoder->protected_->metadata_ where the seek table is */ + unsigned current_sample_number; + unsigned current_frame_number; + FLAC__MD5Context md5context; + FLAC__CPUInfo cpuinfo; + void (*local_precompute_partition_info_sums)(const FLAC__int32 residual[], FLAC__uint64 abs_residual_partition_sums[], unsigned residual_samples, unsigned predictor_order, unsigned min_partition_order, unsigned max_partition_order, unsigned bps); +#ifndef FLAC__INTEGER_ONLY_LIBRARY + unsigned (*local_fixed_compute_best_predictor)(const FLAC__int32 data[], unsigned data_len, float residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]); + unsigned (*local_fixed_compute_best_predictor_wide)(const FLAC__int32 data[], unsigned data_len, float residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]); +#else + unsigned (*local_fixed_compute_best_predictor)(const FLAC__int32 data[], unsigned data_len, FLAC__fixedpoint residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]); + unsigned (*local_fixed_compute_best_predictor_wide)(const FLAC__int32 data[], unsigned data_len, FLAC__fixedpoint residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]); +#endif +#ifndef FLAC__INTEGER_ONLY_LIBRARY + void (*local_lpc_compute_autocorrelation)(const FLAC__real data[], unsigned data_len, unsigned lag, FLAC__real autoc[]); + void (*local_lpc_compute_residual_from_qlp_coefficients)(const FLAC__int32 *data, unsigned data_len, const FLAC__int32 qlp_coeff[], unsigned order, int lp_quantization, FLAC__int32 residual[]); + void (*local_lpc_compute_residual_from_qlp_coefficients_64bit)(const FLAC__int32 *data, unsigned data_len, const FLAC__int32 qlp_coeff[], unsigned order, int lp_quantization, FLAC__int32 residual[]); + void (*local_lpc_compute_residual_from_qlp_coefficients_16bit)(const FLAC__int32 *data, unsigned data_len, const FLAC__int32 qlp_coeff[], unsigned order, int lp_quantization, FLAC__int32 residual[]); +#endif + FLAC__bool disable_constant_subframes; + FLAC__bool disable_fixed_subframes; + FLAC__bool disable_verbatim_subframes; + FLAC__bool is_ogg; + FLAC__StreamEncoderReadCallback read_callback; /* currently only needed for Ogg FLAC */ + FLAC__StreamEncoderSeekCallback seek_callback; + FLAC__StreamEncoderTellCallback tell_callback; + FLAC__StreamEncoderWriteCallback write_callback; + FLAC__StreamEncoderMetadataCallback metadata_callback; + FLAC__StreamEncoderProgressCallback progress_callback; + void *client_data; + unsigned first_seekpoint_to_check; + FILE *file; /* only used when encoding to a file */ + FLAC__uint64 bytes_written; + FLAC__uint64 samples_written; + unsigned frames_written; + unsigned total_frames_estimate; + /* unaligned (original) pointers to allocated data */ + FLAC__int32 *integer_signal_unaligned[FLAC__MAX_CHANNELS]; + FLAC__int32 *integer_signal_mid_side_unaligned[2]; +#ifndef FLAC__INTEGER_ONLY_LIBRARY + FLAC__real *real_signal_unaligned[FLAC__MAX_CHANNELS]; /* (@@@ currently unused) */ + FLAC__real *real_signal_mid_side_unaligned[2]; /* (@@@ currently unused) */ + FLAC__real *window_unaligned[FLAC__MAX_APODIZATION_FUNCTIONS]; + FLAC__real *windowed_signal_unaligned; +#endif + FLAC__int32 *residual_workspace_unaligned[FLAC__MAX_CHANNELS][2]; + FLAC__int32 *residual_workspace_mid_side_unaligned[2][2]; + FLAC__uint64 *abs_residual_partition_sums_unaligned; + unsigned *raw_bits_per_partition_unaligned; + /* + * These fields have been moved here from private function local + * declarations merely to save stack space during encoding. + */ +#ifndef FLAC__INTEGER_ONLY_LIBRARY + FLAC__real lp_coeff[FLAC__MAX_LPC_ORDER][FLAC__MAX_LPC_ORDER]; /* from process_subframe_() */ +#endif + FLAC__EntropyCodingMethod_PartitionedRiceContents partitioned_rice_contents_extra[2]; /* from find_best_partition_order_() */ + /* + * The data for the verify section + */ + struct { + FLAC__StreamDecoder *decoder; + EncoderStateHint state_hint; + FLAC__bool needs_magic_hack; + verify_input_fifo input_fifo; + verify_output output; + struct { + FLAC__uint64 absolute_sample; + unsigned frame_number; + unsigned channel; + unsigned sample; + FLAC__int32 expected; + FLAC__int32 got; + } error_stats; + } verify; + FLAC__bool is_being_deleted; /* if true, call to ..._finish() from ..._delete() will not call the callbacks */ +} FLAC__StreamEncoderPrivate; + +/*********************************************************************** + * + * Public static class data + * + ***********************************************************************/ + +FLAC_API const char * const FLAC__StreamEncoderStateString[] = { + "FLAC__STREAM_ENCODER_OK", + "FLAC__STREAM_ENCODER_UNINITIALIZED", + "FLAC__STREAM_ENCODER_OGG_ERROR", + "FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR", + "FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA", + "FLAC__STREAM_ENCODER_CLIENT_ERROR", + "FLAC__STREAM_ENCODER_IO_ERROR", + "FLAC__STREAM_ENCODER_FRAMING_ERROR", + "FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR" +}; + +FLAC_API const char * const FLAC__StreamEncoderInitStatusString[] = { + "FLAC__STREAM_ENCODER_INIT_STATUS_OK", + "FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR", + "FLAC__STREAM_ENCODER_INIT_STATUS_UNSUPPORTED_CONTAINER", + "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_CALLBACKS", + "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_NUMBER_OF_CHANNELS", + "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BITS_PER_SAMPLE", + "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_SAMPLE_RATE", + "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BLOCK_SIZE", + "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_MAX_LPC_ORDER", + "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_QLP_COEFF_PRECISION", + "FLAC__STREAM_ENCODER_INIT_STATUS_BLOCK_SIZE_TOO_SMALL_FOR_LPC_ORDER", + "FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE", + "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA", + "FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED" +}; + +FLAC_API const char * const FLAC__StreamEncoderReadStatusString[] = { + "FLAC__STREAM_ENCODER_READ_STATUS_CONTINUE", + "FLAC__STREAM_ENCODER_READ_STATUS_END_OF_STREAM", + "FLAC__STREAM_ENCODER_READ_STATUS_ABORT", + "FLAC__STREAM_ENCODER_READ_STATUS_UNSUPPORTED" +}; + +FLAC_API const char * const FLAC__StreamEncoderWriteStatusString[] = { + "FLAC__STREAM_ENCODER_WRITE_STATUS_OK", + "FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR" +}; + +FLAC_API const char * const FLAC__StreamEncoderSeekStatusString[] = { + "FLAC__STREAM_ENCODER_SEEK_STATUS_OK", + "FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR", + "FLAC__STREAM_ENCODER_SEEK_STATUS_UNSUPPORTED" +}; + +FLAC_API const char * const FLAC__StreamEncoderTellStatusString[] = { + "FLAC__STREAM_ENCODER_TELL_STATUS_OK", + "FLAC__STREAM_ENCODER_TELL_STATUS_ERROR", + "FLAC__STREAM_ENCODER_TELL_STATUS_UNSUPPORTED" +}; + +/* Number of samples that will be overread to watch for end of stream. By + * 'overread', we mean that the FLAC__stream_encoder_process*() calls will + * always try to read blocksize+1 samples before encoding a block, so that + * even if the stream has a total sample count that is an integral multiple + * of the blocksize, we will still notice when we are encoding the last + * block. This is needed, for example, to correctly set the end-of-stream + * marker in Ogg FLAC. + * + * WATCHOUT: some parts of the code assert that OVERREAD_ == 1 and there's + * not really any reason to change it. + */ +static const unsigned OVERREAD_ = 1; + +/*********************************************************************** + * + * Class constructor/destructor + * + */ +FLAC_API FLAC__StreamEncoder *FLAC__stream_encoder_new(void) +{ + FLAC__StreamEncoder *encoder; + unsigned i; + + FLAC__ASSERT(sizeof(int) >= 4); /* we want to die right away if this is not true */ + + encoder = calloc(1, sizeof(FLAC__StreamEncoder)); + if(encoder == 0) { + return 0; + } + + encoder->protected_ = calloc(1, sizeof(FLAC__StreamEncoderProtected)); + if(encoder->protected_ == 0) { + free(encoder); + return 0; + } + + encoder->private_ = calloc(1, sizeof(FLAC__StreamEncoderPrivate)); + if(encoder->private_ == 0) { + free(encoder->protected_); + free(encoder); + return 0; + } + + encoder->private_->frame = FLAC__bitwriter_new(); + if(encoder->private_->frame == 0) { + free(encoder->private_); + free(encoder->protected_); + free(encoder); + return 0; + } + + encoder->private_->file = 0; + + set_defaults_(encoder); + + encoder->private_->is_being_deleted = false; + + for(i = 0; i < FLAC__MAX_CHANNELS; i++) { + encoder->private_->subframe_workspace_ptr[i][0] = &encoder->private_->subframe_workspace[i][0]; + encoder->private_->subframe_workspace_ptr[i][1] = &encoder->private_->subframe_workspace[i][1]; + } + for(i = 0; i < 2; i++) { + encoder->private_->subframe_workspace_ptr_mid_side[i][0] = &encoder->private_->subframe_workspace_mid_side[i][0]; + encoder->private_->subframe_workspace_ptr_mid_side[i][1] = &encoder->private_->subframe_workspace_mid_side[i][1]; + } + for(i = 0; i < FLAC__MAX_CHANNELS; i++) { + encoder->private_->partitioned_rice_contents_workspace_ptr[i][0] = &encoder->private_->partitioned_rice_contents_workspace[i][0]; + encoder->private_->partitioned_rice_contents_workspace_ptr[i][1] = &encoder->private_->partitioned_rice_contents_workspace[i][1]; + } + for(i = 0; i < 2; i++) { + encoder->private_->partitioned_rice_contents_workspace_ptr_mid_side[i][0] = &encoder->private_->partitioned_rice_contents_workspace_mid_side[i][0]; + encoder->private_->partitioned_rice_contents_workspace_ptr_mid_side[i][1] = &encoder->private_->partitioned_rice_contents_workspace_mid_side[i][1]; + } + + for(i = 0; i < FLAC__MAX_CHANNELS; i++) { + FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace[i][0]); + FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace[i][1]); + } + for(i = 0; i < 2; i++) { + FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][0]); + FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][1]); + } + for(i = 0; i < 2; i++) + FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_extra[i]); + + encoder->protected_->state = FLAC__STREAM_ENCODER_UNINITIALIZED; + + return encoder; +} + +FLAC_API void FLAC__stream_encoder_delete(FLAC__StreamEncoder *encoder) +{ + unsigned i; + + if (encoder == NULL) + return ; + + FLAC__ASSERT(0 != encoder->protected_); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->private_->frame); + + encoder->private_->is_being_deleted = true; + + (void)FLAC__stream_encoder_finish(encoder); + + if(0 != encoder->private_->verify.decoder) + FLAC__stream_decoder_delete(encoder->private_->verify.decoder); + + for(i = 0; i < FLAC__MAX_CHANNELS; i++) { + FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace[i][0]); + FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace[i][1]); + } + for(i = 0; i < 2; i++) { + FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][0]); + FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][1]); + } + for(i = 0; i < 2; i++) + FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_extra[i]); + + FLAC__bitwriter_delete(encoder->private_->frame); + free(encoder->private_); + free(encoder->protected_); + free(encoder); +} + +/*********************************************************************** + * + * Public class methods + * + ***********************************************************************/ + +static FLAC__StreamEncoderInitStatus init_stream_internal_( + FLAC__StreamEncoder *encoder, + FLAC__StreamEncoderReadCallback read_callback, + FLAC__StreamEncoderWriteCallback write_callback, + FLAC__StreamEncoderSeekCallback seek_callback, + FLAC__StreamEncoderTellCallback tell_callback, + FLAC__StreamEncoderMetadataCallback metadata_callback, + void *client_data, + FLAC__bool is_ogg +) +{ + unsigned i; + FLAC__bool metadata_has_seektable, metadata_has_vorbis_comment, metadata_picture_has_type1, metadata_picture_has_type2; + + FLAC__ASSERT(0 != encoder); + + if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) + return FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED; + + if(FLAC__HAS_OGG == 0 && is_ogg) + return FLAC__STREAM_ENCODER_INIT_STATUS_UNSUPPORTED_CONTAINER; + + if(0 == write_callback || (seek_callback && 0 == tell_callback)) + return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_CALLBACKS; + + if(encoder->protected_->channels == 0 || encoder->protected_->channels > FLAC__MAX_CHANNELS) + return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_NUMBER_OF_CHANNELS; + + if(encoder->protected_->channels != 2) { + encoder->protected_->do_mid_side_stereo = false; + encoder->protected_->loose_mid_side_stereo = false; + } + else if(!encoder->protected_->do_mid_side_stereo) + encoder->protected_->loose_mid_side_stereo = false; + + if(encoder->protected_->bits_per_sample >= 32) + encoder->protected_->do_mid_side_stereo = false; /* since we currenty do 32-bit math, the side channel would have 33 bps and overflow */ + + if(encoder->protected_->bits_per_sample < FLAC__MIN_BITS_PER_SAMPLE || encoder->protected_->bits_per_sample > FLAC__REFERENCE_CODEC_MAX_BITS_PER_SAMPLE) + return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BITS_PER_SAMPLE; + + if(!FLAC__format_sample_rate_is_valid(encoder->protected_->sample_rate)) + return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_SAMPLE_RATE; + + if(encoder->protected_->blocksize == 0) { + if(encoder->protected_->max_lpc_order == 0) + encoder->protected_->blocksize = 1152; + else + encoder->protected_->blocksize = 4096; + } + + if(encoder->protected_->blocksize < FLAC__MIN_BLOCK_SIZE || encoder->protected_->blocksize > FLAC__MAX_BLOCK_SIZE) + return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BLOCK_SIZE; + + if(encoder->protected_->max_lpc_order > FLAC__MAX_LPC_ORDER) + return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_MAX_LPC_ORDER; + + if(encoder->protected_->blocksize < encoder->protected_->max_lpc_order) + return FLAC__STREAM_ENCODER_INIT_STATUS_BLOCK_SIZE_TOO_SMALL_FOR_LPC_ORDER; + + if(encoder->protected_->qlp_coeff_precision == 0) { + if(encoder->protected_->bits_per_sample < 16) { + /* @@@ need some data about how to set this here w.r.t. blocksize and sample rate */ + /* @@@ until then we'll make a guess */ + encoder->protected_->qlp_coeff_precision = flac_max(FLAC__MIN_QLP_COEFF_PRECISION, 2 + encoder->protected_->bits_per_sample / 2); + } + else if(encoder->protected_->bits_per_sample == 16) { + if(encoder->protected_->blocksize <= 192) + encoder->protected_->qlp_coeff_precision = 7; + else if(encoder->protected_->blocksize <= 384) + encoder->protected_->qlp_coeff_precision = 8; + else if(encoder->protected_->blocksize <= 576) + encoder->protected_->qlp_coeff_precision = 9; + else if(encoder->protected_->blocksize <= 1152) + encoder->protected_->qlp_coeff_precision = 10; + else if(encoder->protected_->blocksize <= 2304) + encoder->protected_->qlp_coeff_precision = 11; + else if(encoder->protected_->blocksize <= 4608) + encoder->protected_->qlp_coeff_precision = 12; + else + encoder->protected_->qlp_coeff_precision = 13; + } + else { + if(encoder->protected_->blocksize <= 384) + encoder->protected_->qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION-2; + else if(encoder->protected_->blocksize <= 1152) + encoder->protected_->qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION-1; + else + encoder->protected_->qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION; + } + FLAC__ASSERT(encoder->protected_->qlp_coeff_precision <= FLAC__MAX_QLP_COEFF_PRECISION); + } + else if(encoder->protected_->qlp_coeff_precision < FLAC__MIN_QLP_COEFF_PRECISION || encoder->protected_->qlp_coeff_precision > FLAC__MAX_QLP_COEFF_PRECISION) + return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_QLP_COEFF_PRECISION; + + if(encoder->protected_->streamable_subset) { + if(!FLAC__format_blocksize_is_subset(encoder->protected_->blocksize, encoder->protected_->sample_rate)) + return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE; + if(!FLAC__format_sample_rate_is_subset(encoder->protected_->sample_rate)) + return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE; + if( + encoder->protected_->bits_per_sample != 8 && + encoder->protected_->bits_per_sample != 12 && + encoder->protected_->bits_per_sample != 16 && + encoder->protected_->bits_per_sample != 20 && + encoder->protected_->bits_per_sample != 24 + ) + return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE; + if(encoder->protected_->max_residual_partition_order > FLAC__SUBSET_MAX_RICE_PARTITION_ORDER) + return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE; + if( + encoder->protected_->sample_rate <= 48000 && + ( + encoder->protected_->blocksize > FLAC__SUBSET_MAX_BLOCK_SIZE_48000HZ || + encoder->protected_->max_lpc_order > FLAC__SUBSET_MAX_LPC_ORDER_48000HZ + ) + ) { + return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE; + } + } + + if(encoder->protected_->max_residual_partition_order >= (1u << FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN)) + encoder->protected_->max_residual_partition_order = (1u << FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN) - 1; + if(encoder->protected_->min_residual_partition_order >= encoder->protected_->max_residual_partition_order) + encoder->protected_->min_residual_partition_order = encoder->protected_->max_residual_partition_order; + +#if FLAC__HAS_OGG + /* reorder metadata if necessary to ensure that any VORBIS_COMMENT is the first, according to the mapping spec */ + if(is_ogg && 0 != encoder->protected_->metadata && encoder->protected_->num_metadata_blocks > 1) { + unsigned i1; + for(i1 = 1; i1 < encoder->protected_->num_metadata_blocks; i1++) { + if(0 != encoder->protected_->metadata[i1] && encoder->protected_->metadata[i1]->type == FLAC__METADATA_TYPE_VORBIS_COMMENT) { + FLAC__StreamMetadata *vc = encoder->protected_->metadata[i1]; + for( ; i1 > 0; i1--) + encoder->protected_->metadata[i1] = encoder->protected_->metadata[i1-1]; + encoder->protected_->metadata[0] = vc; + break; + } + } + } +#endif + /* keep track of any SEEKTABLE block */ + if(0 != encoder->protected_->metadata && encoder->protected_->num_metadata_blocks > 0) { + unsigned i2; + for(i2 = 0; i2 < encoder->protected_->num_metadata_blocks; i2++) { + if(0 != encoder->protected_->metadata[i2] && encoder->protected_->metadata[i2]->type == FLAC__METADATA_TYPE_SEEKTABLE) { + encoder->private_->seek_table = &encoder->protected_->metadata[i2]->data.seek_table; + break; /* take only the first one */ + } + } + } + + /* validate metadata */ + if(0 == encoder->protected_->metadata && encoder->protected_->num_metadata_blocks > 0) + return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA; + metadata_has_seektable = false; + metadata_has_vorbis_comment = false; + metadata_picture_has_type1 = false; + metadata_picture_has_type2 = false; + for(i = 0; i < encoder->protected_->num_metadata_blocks; i++) { + const FLAC__StreamMetadata *m = encoder->protected_->metadata[i]; + if(m->type == FLAC__METADATA_TYPE_STREAMINFO) + return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA; + else if(m->type == FLAC__METADATA_TYPE_SEEKTABLE) { + if(metadata_has_seektable) /* only one is allowed */ + return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA; + metadata_has_seektable = true; + if(!FLAC__format_seektable_is_legal(&m->data.seek_table)) + return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA; + } + else if(m->type == FLAC__METADATA_TYPE_VORBIS_COMMENT) { + if(metadata_has_vorbis_comment) /* only one is allowed */ + return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA; + metadata_has_vorbis_comment = true; + } + else if(m->type == FLAC__METADATA_TYPE_CUESHEET) { + if(!FLAC__format_cuesheet_is_legal(&m->data.cue_sheet, m->data.cue_sheet.is_cd, /*violation=*/0)) + return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA; + } + else if(m->type == FLAC__METADATA_TYPE_PICTURE) { + if(!FLAC__format_picture_is_legal(&m->data.picture, /*violation=*/0)) + return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA; + if(m->data.picture.type == FLAC__STREAM_METADATA_PICTURE_TYPE_FILE_ICON_STANDARD) { + if(metadata_picture_has_type1) /* there should only be 1 per stream */ + return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA; + metadata_picture_has_type1 = true; + /* standard icon must be 32x32 pixel PNG */ + if( + m->data.picture.type == FLAC__STREAM_METADATA_PICTURE_TYPE_FILE_ICON_STANDARD && + ( + (strcmp(m->data.picture.mime_type, "image/png") && strcmp(m->data.picture.mime_type, "-->")) || + m->data.picture.width != 32 || + m->data.picture.height != 32 + ) + ) + return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA; + } + else if(m->data.picture.type == FLAC__STREAM_METADATA_PICTURE_TYPE_FILE_ICON) { + if(metadata_picture_has_type2) /* there should only be 1 per stream */ + return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA; + metadata_picture_has_type2 = true; + } + } + } + + encoder->private_->input_capacity = 0; + for(i = 0; i < encoder->protected_->channels; i++) { + encoder->private_->integer_signal_unaligned[i] = encoder->private_->integer_signal[i] = 0; +#ifndef FLAC__INTEGER_ONLY_LIBRARY + encoder->private_->real_signal_unaligned[i] = encoder->private_->real_signal[i] = 0; +#endif + } + for(i = 0; i < 2; i++) { + encoder->private_->integer_signal_mid_side_unaligned[i] = encoder->private_->integer_signal_mid_side[i] = 0; +#ifndef FLAC__INTEGER_ONLY_LIBRARY + encoder->private_->real_signal_mid_side_unaligned[i] = encoder->private_->real_signal_mid_side[i] = 0; +#endif + } +#ifndef FLAC__INTEGER_ONLY_LIBRARY + for(i = 0; i < encoder->protected_->num_apodizations; i++) + encoder->private_->window_unaligned[i] = encoder->private_->window[i] = 0; + encoder->private_->windowed_signal_unaligned = encoder->private_->windowed_signal = 0; +#endif + for(i = 0; i < encoder->protected_->channels; i++) { + encoder->private_->residual_workspace_unaligned[i][0] = encoder->private_->residual_workspace[i][0] = 0; + encoder->private_->residual_workspace_unaligned[i][1] = encoder->private_->residual_workspace[i][1] = 0; + encoder->private_->best_subframe[i] = 0; + } + for(i = 0; i < 2; i++) { + encoder->private_->residual_workspace_mid_side_unaligned[i][0] = encoder->private_->residual_workspace_mid_side[i][0] = 0; + encoder->private_->residual_workspace_mid_side_unaligned[i][1] = encoder->private_->residual_workspace_mid_side[i][1] = 0; + encoder->private_->best_subframe_mid_side[i] = 0; + } + encoder->private_->abs_residual_partition_sums_unaligned = encoder->private_->abs_residual_partition_sums = 0; + encoder->private_->raw_bits_per_partition_unaligned = encoder->private_->raw_bits_per_partition = 0; +#ifndef FLAC__INTEGER_ONLY_LIBRARY + encoder->private_->loose_mid_side_stereo_frames = (unsigned)((double)encoder->protected_->sample_rate * 0.4 / (double)encoder->protected_->blocksize + 0.5); +#else + /* 26214 is the approximate fixed-point equivalent to 0.4 (0.4 * 2^16) */ + /* sample rate can be up to 655350 Hz, and thus use 20 bits, so we do the multiply÷ by hand */ + FLAC__ASSERT(FLAC__MAX_SAMPLE_RATE <= 655350); + FLAC__ASSERT(FLAC__MAX_BLOCK_SIZE <= 65535); + FLAC__ASSERT(encoder->protected_->sample_rate <= 655350); + FLAC__ASSERT(encoder->protected_->blocksize <= 65535); + encoder->private_->loose_mid_side_stereo_frames = (unsigned)FLAC__fixedpoint_trunc((((FLAC__uint64)(encoder->protected_->sample_rate) * (FLAC__uint64)(26214)) << 16) / (encoder->protected_->blocksize<<16) + FLAC__FP_ONE_HALF); +#endif + if(encoder->private_->loose_mid_side_stereo_frames == 0) + encoder->private_->loose_mid_side_stereo_frames = 1; + encoder->private_->loose_mid_side_stereo_frame_count = 0; + encoder->private_->current_sample_number = 0; + encoder->private_->current_frame_number = 0; + + /* + * get the CPU info and set the function pointers + */ + FLAC__cpu_info(&encoder->private_->cpuinfo); + /* first default to the non-asm routines */ +#ifndef FLAC__INTEGER_ONLY_LIBRARY + encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation; +#endif + encoder->private_->local_precompute_partition_info_sums = precompute_partition_info_sums_; + encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor; + encoder->private_->local_fixed_compute_best_predictor_wide = FLAC__fixed_compute_best_predictor_wide; +#ifndef FLAC__INTEGER_ONLY_LIBRARY + encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients; + encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_64bit = FLAC__lpc_compute_residual_from_qlp_coefficients_wide; + encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients; +#endif + /* now override with asm where appropriate */ +#ifndef FLAC__INTEGER_ONLY_LIBRARY +# ifndef FLAC__NO_ASM + if(encoder->private_->cpuinfo.use_asm) { +# ifdef FLAC__CPU_IA32 + FLAC__ASSERT(encoder->private_->cpuinfo.type == FLAC__CPUINFO_TYPE_IA32); +# ifdef FLAC__HAS_NASM + if(encoder->private_->cpuinfo.ia32.sse) { + if(encoder->protected_->max_lpc_order < 4) + encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_4_old; + else if(encoder->protected_->max_lpc_order < 8) + encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_8_old; + else if(encoder->protected_->max_lpc_order < 12) + encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_12_old; + else if(encoder->protected_->max_lpc_order < 16) + encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_16_old; + else + encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32; + } + else + encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32; + + encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_64bit = FLAC__lpc_compute_residual_from_qlp_coefficients_wide_asm_ia32; /* OPT_IA32: was really necessary for GCC < 4.9 */ + if(encoder->private_->cpuinfo.ia32.mmx) { + encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32; + encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32_mmx; + } + else { + encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32; + encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32; + } + + if(encoder->private_->cpuinfo.ia32.mmx && encoder->private_->cpuinfo.ia32.cmov) + encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor_asm_ia32_mmx_cmov; +# endif /* FLAC__HAS_NASM */ +# if FLAC__HAS_X86INTRIN +# if defined FLAC__SSE_SUPPORTED + if(encoder->private_->cpuinfo.ia32.sse) { + if(encoder->private_->cpuinfo.ia32.sse42 || !encoder->private_->cpuinfo.ia32.intel) { /* use new autocorrelation functions */ + if(encoder->protected_->max_lpc_order < 4) + encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_intrin_sse_lag_4_new; + else if(encoder->protected_->max_lpc_order < 8) + encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_intrin_sse_lag_8_new; + else if(encoder->protected_->max_lpc_order < 12) + encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_intrin_sse_lag_12_new; + else if(encoder->protected_->max_lpc_order < 16) + encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_intrin_sse_lag_16_new; + else + encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation; + } + else { /* use old autocorrelation functions */ + if(encoder->protected_->max_lpc_order < 4) + encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_intrin_sse_lag_4_old; + else if(encoder->protected_->max_lpc_order < 8) + encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_intrin_sse_lag_8_old; + else if(encoder->protected_->max_lpc_order < 12) + encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_intrin_sse_lag_12_old; + else if(encoder->protected_->max_lpc_order < 16) + encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_intrin_sse_lag_16_old; + else + encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation; + } + } +# endif + +# ifdef FLAC__SSE2_SUPPORTED + if(encoder->private_->cpuinfo.ia32.sse2) { + encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients_intrin_sse2; + encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients_16_intrin_sse2; + } +# endif +# ifdef FLAC__SSE4_1_SUPPORTED + if(encoder->private_->cpuinfo.ia32.sse41) { + encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients_intrin_sse41; + encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_64bit = FLAC__lpc_compute_residual_from_qlp_coefficients_wide_intrin_sse41; + } +# endif +# ifdef FLAC__AVX2_SUPPORTED + if(encoder->private_->cpuinfo.ia32.avx2) { + encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients_16_intrin_avx2; + encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients_intrin_avx2; + encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_64bit = FLAC__lpc_compute_residual_from_qlp_coefficients_wide_intrin_avx2; + } +# endif + +# ifdef FLAC__SSE2_SUPPORTED + if (encoder->private_->cpuinfo.ia32.sse2) { + encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor_intrin_sse2; + encoder->private_->local_fixed_compute_best_predictor_wide = FLAC__fixed_compute_best_predictor_wide_intrin_sse2; + } +# endif +# ifdef FLAC__SSSE3_SUPPORTED + if (encoder->private_->cpuinfo.ia32.ssse3) { + encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor_intrin_ssse3; + encoder->private_->local_fixed_compute_best_predictor_wide = FLAC__fixed_compute_best_predictor_wide_intrin_ssse3; + } +# endif +# endif /* FLAC__HAS_X86INTRIN */ +# elif defined FLAC__CPU_X86_64 + FLAC__ASSERT(encoder->private_->cpuinfo.type == FLAC__CPUINFO_TYPE_X86_64); +# if FLAC__HAS_X86INTRIN +# ifdef FLAC__SSE_SUPPORTED + if(encoder->private_->cpuinfo.x86.sse42 || !encoder->private_->cpuinfo.x86.intel) { /* use new autocorrelation functions */ + if(encoder->protected_->max_lpc_order < 4) + encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_intrin_sse_lag_4_new; + else if(encoder->protected_->max_lpc_order < 8) + encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_intrin_sse_lag_8_new; + else if(encoder->protected_->max_lpc_order < 12) + encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_intrin_sse_lag_12_new; + else if(encoder->protected_->max_lpc_order < 16) + encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_intrin_sse_lag_16_new; + } + else { + if(encoder->protected_->max_lpc_order < 4) + encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_intrin_sse_lag_4_old; + else if(encoder->protected_->max_lpc_order < 8) + encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_intrin_sse_lag_8_old; + else if(encoder->protected_->max_lpc_order < 12) + encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_intrin_sse_lag_12_old; + else if(encoder->protected_->max_lpc_order < 16) + encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_intrin_sse_lag_16_old; + } +# endif + +# ifdef FLAC__SSE2_SUPPORTED + encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients_16_intrin_sse2; +# endif +# ifdef FLAC__SSE4_1_SUPPORTED + if(encoder->private_->cpuinfo.x86.sse41) { + encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients_intrin_sse41; + } +# endif +# ifdef FLAC__AVX2_SUPPORTED + if(encoder->private_->cpuinfo.x86.avx2) { + encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients_16_intrin_avx2; + encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients_intrin_avx2; + encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_64bit = FLAC__lpc_compute_residual_from_qlp_coefficients_wide_intrin_avx2; + } +# endif + +# ifdef FLAC__SSE2_SUPPORTED + encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor_intrin_sse2; + encoder->private_->local_fixed_compute_best_predictor_wide = FLAC__fixed_compute_best_predictor_wide_intrin_sse2; +# endif +# ifdef FLAC__SSSE3_SUPPORTED + if (encoder->private_->cpuinfo.x86.ssse3) { + encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor_intrin_ssse3; + encoder->private_->local_fixed_compute_best_predictor_wide = FLAC__fixed_compute_best_predictor_wide_intrin_ssse3; + } +# endif +# endif /* FLAC__HAS_X86INTRIN */ +# endif /* FLAC__CPU_... */ + } +# endif /* !FLAC__NO_ASM */ +#endif /* !FLAC__INTEGER_ONLY_LIBRARY */ +#if !defined FLAC__NO_ASM && FLAC__HAS_X86INTRIN + if(encoder->private_->cpuinfo.use_asm) { +# if defined FLAC__CPU_IA32 +# ifdef FLAC__SSE2_SUPPORTED + if(encoder->private_->cpuinfo.ia32.sse2) + encoder->private_->local_precompute_partition_info_sums = FLAC__precompute_partition_info_sums_intrin_sse2; +# endif +# ifdef FLAC__SSSE3_SUPPORTED + if(encoder->private_->cpuinfo.ia32.ssse3) + encoder->private_->local_precompute_partition_info_sums = FLAC__precompute_partition_info_sums_intrin_ssse3; +# endif +# ifdef FLAC__AVX2_SUPPORTED + if(encoder->private_->cpuinfo.ia32.avx2) + encoder->private_->local_precompute_partition_info_sums = FLAC__precompute_partition_info_sums_intrin_avx2; +# endif +# elif defined FLAC__CPU_X86_64 +# ifdef FLAC__SSE2_SUPPORTED + encoder->private_->local_precompute_partition_info_sums = FLAC__precompute_partition_info_sums_intrin_sse2; +# endif +# ifdef FLAC__SSSE3_SUPPORTED + if(encoder->private_->cpuinfo.x86.ssse3) + encoder->private_->local_precompute_partition_info_sums = FLAC__precompute_partition_info_sums_intrin_ssse3; +# endif +# ifdef FLAC__AVX2_SUPPORTED + if(encoder->private_->cpuinfo.x86.avx2) + encoder->private_->local_precompute_partition_info_sums = FLAC__precompute_partition_info_sums_intrin_avx2; +# endif +# endif /* FLAC__CPU_... */ + } +#endif /* !FLAC__NO_ASM && FLAC__HAS_X86INTRIN */ + + /* set state to OK; from here on, errors are fatal and we'll override the state then */ + encoder->protected_->state = FLAC__STREAM_ENCODER_OK; + +#if FLAC__HAS_OGG + encoder->private_->is_ogg = is_ogg; + if(is_ogg && !FLAC__ogg_encoder_aspect_init(&encoder->protected_->ogg_encoder_aspect)) { + encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR; + return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR; + } +#endif + + encoder->private_->read_callback = read_callback; + encoder->private_->write_callback = write_callback; + encoder->private_->seek_callback = seek_callback; + encoder->private_->tell_callback = tell_callback; + encoder->private_->metadata_callback = metadata_callback; + encoder->private_->client_data = client_data; + + if(!resize_buffers_(encoder, encoder->protected_->blocksize)) { + /* the above function sets the state for us in case of an error */ + return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR; + } + + if(!FLAC__bitwriter_init(encoder->private_->frame)) { + encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR; + return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR; + } + + /* + * Set up the verify stuff if necessary + */ + if(encoder->protected_->verify) { + /* + * First, set up the fifo which will hold the + * original signal to compare against + */ + encoder->private_->verify.input_fifo.size = encoder->protected_->blocksize+OVERREAD_; + for(i = 0; i < encoder->protected_->channels; i++) { + if(0 == (encoder->private_->verify.input_fifo.data[i] = safe_malloc_mul_2op_p(sizeof(FLAC__int32), /*times*/encoder->private_->verify.input_fifo.size))) { + encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR; + return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR; + } + } + encoder->private_->verify.input_fifo.tail = 0; + + /* + * Now set up a stream decoder for verification + */ + if(0 == encoder->private_->verify.decoder) { + encoder->private_->verify.decoder = FLAC__stream_decoder_new(); + if(0 == encoder->private_->verify.decoder) { + encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR; + return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR; + } + } + + if(FLAC__stream_decoder_init_stream(encoder->private_->verify.decoder, verify_read_callback_, /*seek_callback=*/0, /*tell_callback=*/0, /*length_callback=*/0, /*eof_callback=*/0, verify_write_callback_, verify_metadata_callback_, verify_error_callback_, /*client_data=*/encoder) != FLAC__STREAM_DECODER_INIT_STATUS_OK) { + encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR; + return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR; + } + } + encoder->private_->verify.error_stats.absolute_sample = 0; + encoder->private_->verify.error_stats.frame_number = 0; + encoder->private_->verify.error_stats.channel = 0; + encoder->private_->verify.error_stats.sample = 0; + encoder->private_->verify.error_stats.expected = 0; + encoder->private_->verify.error_stats.got = 0; + + /* + * These must be done before we write any metadata, because that + * calls the write_callback, which uses these values. + */ + encoder->private_->first_seekpoint_to_check = 0; + encoder->private_->samples_written = 0; + encoder->protected_->streaminfo_offset = 0; + encoder->protected_->seektable_offset = 0; + encoder->protected_->audio_offset = 0; + + /* + * write the stream header + */ + if(encoder->protected_->verify) + encoder->private_->verify.state_hint = ENCODER_IN_MAGIC; + if(!FLAC__bitwriter_write_raw_uint32(encoder->private_->frame, FLAC__STREAM_SYNC, FLAC__STREAM_SYNC_LEN)) { + encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR; + return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR; + } + if(!write_bitbuffer_(encoder, 0, /*is_last_block=*/false)) { + /* the above function sets the state for us in case of an error */ + return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR; + } + + /* + * write the STREAMINFO metadata block + */ + if(encoder->protected_->verify) + encoder->private_->verify.state_hint = ENCODER_IN_METADATA; + encoder->private_->streaminfo.type = FLAC__METADATA_TYPE_STREAMINFO; + encoder->private_->streaminfo.is_last = false; /* we will have at a minimum a VORBIS_COMMENT afterwards */ + encoder->private_->streaminfo.length = FLAC__STREAM_METADATA_STREAMINFO_LENGTH; + encoder->private_->streaminfo.data.stream_info.min_blocksize = encoder->protected_->blocksize; /* this encoder uses the same blocksize for the whole stream */ + encoder->private_->streaminfo.data.stream_info.max_blocksize = encoder->protected_->blocksize; + encoder->private_->streaminfo.data.stream_info.min_framesize = 0; /* we don't know this yet; have to fill it in later */ + encoder->private_->streaminfo.data.stream_info.max_framesize = 0; /* we don't know this yet; have to fill it in later */ + encoder->private_->streaminfo.data.stream_info.sample_rate = encoder->protected_->sample_rate; + encoder->private_->streaminfo.data.stream_info.channels = encoder->protected_->channels; + encoder->private_->streaminfo.data.stream_info.bits_per_sample = encoder->protected_->bits_per_sample; + encoder->private_->streaminfo.data.stream_info.total_samples = encoder->protected_->total_samples_estimate; /* we will replace this later with the real total */ + memset(encoder->private_->streaminfo.data.stream_info.md5sum, 0, 16); /* we don't know this yet; have to fill it in later */ + if(encoder->protected_->do_md5) + FLAC__MD5Init(&encoder->private_->md5context); + if(!FLAC__add_metadata_block(&encoder->private_->streaminfo, encoder->private_->frame)) { + encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR; + return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR; + } + if(!write_bitbuffer_(encoder, 0, /*is_last_block=*/false)) { + /* the above function sets the state for us in case of an error */ + return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR; + } + + /* + * Now that the STREAMINFO block is written, we can init this to an + * absurdly-high value... + */ + encoder->private_->streaminfo.data.stream_info.min_framesize = (1u << FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN) - 1; + /* ... and clear this to 0 */ + encoder->private_->streaminfo.data.stream_info.total_samples = 0; + + /* + * Check to see if the supplied metadata contains a VORBIS_COMMENT; + * if not, we will write an empty one (FLAC__add_metadata_block() + * automatically supplies the vendor string). + * + * WATCHOUT: the Ogg FLAC mapping requires us to write this block after + * the STREAMINFO. (In the case that metadata_has_vorbis_comment is + * true it will have already insured that the metadata list is properly + * ordered.) + */ + if(!metadata_has_vorbis_comment) { + FLAC__StreamMetadata vorbis_comment; + vorbis_comment.type = FLAC__METADATA_TYPE_VORBIS_COMMENT; + vorbis_comment.is_last = (encoder->protected_->num_metadata_blocks == 0); + vorbis_comment.length = 4 + 4; /* MAGIC NUMBER */ + vorbis_comment.data.vorbis_comment.vendor_string.length = 0; + vorbis_comment.data.vorbis_comment.vendor_string.entry = 0; + vorbis_comment.data.vorbis_comment.num_comments = 0; + vorbis_comment.data.vorbis_comment.comments = 0; + if(!FLAC__add_metadata_block(&vorbis_comment, encoder->private_->frame)) { + encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR; + return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR; + } + if(!write_bitbuffer_(encoder, 0, /*is_last_block=*/false)) { + /* the above function sets the state for us in case of an error */ + return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR; + } + } + + /* + * write the user's metadata blocks + */ + for(i = 0; i < encoder->protected_->num_metadata_blocks; i++) { + encoder->protected_->metadata[i]->is_last = (i == encoder->protected_->num_metadata_blocks - 1); + if(!FLAC__add_metadata_block(encoder->protected_->metadata[i], encoder->private_->frame)) { + encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR; + return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR; + } + if(!write_bitbuffer_(encoder, 0, /*is_last_block=*/false)) { + /* the above function sets the state for us in case of an error */ + return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR; + } + } + + /* now that all the metadata is written, we save the stream offset */ + if(encoder->private_->tell_callback && encoder->private_->tell_callback(encoder, &encoder->protected_->audio_offset, encoder->private_->client_data) == FLAC__STREAM_ENCODER_TELL_STATUS_ERROR) { /* FLAC__STREAM_ENCODER_TELL_STATUS_UNSUPPORTED just means we didn't get the offset; no error */ + encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR; + return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR; + } + + if(encoder->protected_->verify) + encoder->private_->verify.state_hint = ENCODER_IN_AUDIO; + + return FLAC__STREAM_ENCODER_INIT_STATUS_OK; +} + +FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_stream( + FLAC__StreamEncoder *encoder, + FLAC__StreamEncoderWriteCallback write_callback, + FLAC__StreamEncoderSeekCallback seek_callback, + FLAC__StreamEncoderTellCallback tell_callback, + FLAC__StreamEncoderMetadataCallback metadata_callback, + void *client_data +) +{ + return init_stream_internal_( + encoder, + /*read_callback=*/0, + write_callback, + seek_callback, + tell_callback, + metadata_callback, + client_data, + /*is_ogg=*/false + ); +} + +FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_ogg_stream( + FLAC__StreamEncoder *encoder, + FLAC__StreamEncoderReadCallback read_callback, + FLAC__StreamEncoderWriteCallback write_callback, + FLAC__StreamEncoderSeekCallback seek_callback, + FLAC__StreamEncoderTellCallback tell_callback, + FLAC__StreamEncoderMetadataCallback metadata_callback, + void *client_data +) +{ + return init_stream_internal_( + encoder, + read_callback, + write_callback, + seek_callback, + tell_callback, + metadata_callback, + client_data, + /*is_ogg=*/true + ); +} + +static FLAC__StreamEncoderInitStatus init_FILE_internal_( + FLAC__StreamEncoder *encoder, + FILE *file, + FLAC__StreamEncoderProgressCallback progress_callback, + void *client_data, + FLAC__bool is_ogg +) +{ + FLAC__StreamEncoderInitStatus init_status; + + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != file); + + if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) + return FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED; + + /* double protection */ + if(file == 0) { + encoder->protected_->state = FLAC__STREAM_ENCODER_IO_ERROR; + return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR; + } + + /* + * To make sure that our file does not go unclosed after an error, we + * must assign the FILE pointer before any further error can occur in + * this routine. + */ + if(file == stdout) + file = get_binary_stdout_(); /* just to be safe */ + +#ifdef _WIN32 + /* + * Windows can suffer quite badly from disk fragmentation. This can be + * reduced significantly by setting the output buffer size to be 10MB. + */ + if(GetFileType((HANDLE)_get_osfhandle(_fileno(file))) == FILE_TYPE_DISK) + setvbuf(file, NULL, _IOFBF, 10*1024*1024); +#endif + encoder->private_->file = file; + + encoder->private_->progress_callback = progress_callback; + encoder->private_->bytes_written = 0; + encoder->private_->samples_written = 0; + encoder->private_->frames_written = 0; + + init_status = init_stream_internal_( + encoder, + encoder->private_->file == stdout? 0 : is_ogg? file_read_callback_ : 0, + file_write_callback_, + encoder->private_->file == stdout? 0 : file_seek_callback_, + encoder->private_->file == stdout? 0 : file_tell_callback_, + /*metadata_callback=*/0, + client_data, + is_ogg + ); + if(init_status != FLAC__STREAM_ENCODER_INIT_STATUS_OK) { + /* the above function sets the state for us in case of an error */ + return init_status; + } + + { + unsigned blocksize = FLAC__stream_encoder_get_blocksize(encoder); + + FLAC__ASSERT(blocksize != 0); + encoder->private_->total_frames_estimate = (unsigned)((FLAC__stream_encoder_get_total_samples_estimate(encoder) + blocksize - 1) / blocksize); + } + + return init_status; +} + +FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_FILE( + FLAC__StreamEncoder *encoder, + FILE *file, + FLAC__StreamEncoderProgressCallback progress_callback, + void *client_data +) +{ + return init_FILE_internal_(encoder, file, progress_callback, client_data, /*is_ogg=*/false); +} + +FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_ogg_FILE( + FLAC__StreamEncoder *encoder, + FILE *file, + FLAC__StreamEncoderProgressCallback progress_callback, + void *client_data +) +{ + return init_FILE_internal_(encoder, file, progress_callback, client_data, /*is_ogg=*/true); +} + +static FLAC__StreamEncoderInitStatus init_file_internal_( + FLAC__StreamEncoder *encoder, + const char *filename, + FLAC__StreamEncoderProgressCallback progress_callback, + void *client_data, + FLAC__bool is_ogg +) +{ + FILE *file; + + FLAC__ASSERT(0 != encoder); + + /* + * To make sure that our file does not go unclosed after an error, we + * have to do the same entrance checks here that are later performed + * in FLAC__stream_encoder_init_FILE() before the FILE* is assigned. + */ + if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) + return FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED; + + file = filename? flac_fopen(filename, "w+b") : stdout; + + if(file == 0) { + encoder->protected_->state = FLAC__STREAM_ENCODER_IO_ERROR; + return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR; + } + + return init_FILE_internal_(encoder, file, progress_callback, client_data, is_ogg); +} + +FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_file( + FLAC__StreamEncoder *encoder, + const char *filename, + FLAC__StreamEncoderProgressCallback progress_callback, + void *client_data +) +{ + return init_file_internal_(encoder, filename, progress_callback, client_data, /*is_ogg=*/false); +} + +FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_ogg_file( + FLAC__StreamEncoder *encoder, + const char *filename, + FLAC__StreamEncoderProgressCallback progress_callback, + void *client_data +) +{ + return init_file_internal_(encoder, filename, progress_callback, client_data, /*is_ogg=*/true); +} + +FLAC_API FLAC__bool FLAC__stream_encoder_finish(FLAC__StreamEncoder *encoder) +{ + FLAC__bool error = false; + + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + + if(encoder->protected_->state == FLAC__STREAM_ENCODER_UNINITIALIZED) + return true; + + if(encoder->protected_->state == FLAC__STREAM_ENCODER_OK && !encoder->private_->is_being_deleted) { + if(encoder->private_->current_sample_number != 0) { + const FLAC__bool is_fractional_block = encoder->protected_->blocksize != encoder->private_->current_sample_number; + encoder->protected_->blocksize = encoder->private_->current_sample_number; + if(!process_frame_(encoder, is_fractional_block, /*is_last_block=*/true)) + error = true; + } + } + + if(encoder->protected_->do_md5) + FLAC__MD5Final(encoder->private_->streaminfo.data.stream_info.md5sum, &encoder->private_->md5context); + + if(!encoder->private_->is_being_deleted) { + if(encoder->protected_->state == FLAC__STREAM_ENCODER_OK) { + if(encoder->private_->seek_callback) { +#if FLAC__HAS_OGG + if(encoder->private_->is_ogg) + update_ogg_metadata_(encoder); + else +#endif + update_metadata_(encoder); + + /* check if an error occurred while updating metadata */ + if(encoder->protected_->state != FLAC__STREAM_ENCODER_OK) + error = true; + } + if(encoder->private_->metadata_callback) + encoder->private_->metadata_callback(encoder, &encoder->private_->streaminfo, encoder->private_->client_data); + } + + if(encoder->protected_->verify && 0 != encoder->private_->verify.decoder && !FLAC__stream_decoder_finish(encoder->private_->verify.decoder)) { + if(!error) + encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA; + error = true; + } + } + + if(0 != encoder->private_->file) { + if(encoder->private_->file != stdout) + fclose(encoder->private_->file); + encoder->private_->file = 0; + } + +#if FLAC__HAS_OGG + if(encoder->private_->is_ogg) + FLAC__ogg_encoder_aspect_finish(&encoder->protected_->ogg_encoder_aspect); +#endif + + free_(encoder); + set_defaults_(encoder); + + if(!error) + encoder->protected_->state = FLAC__STREAM_ENCODER_UNINITIALIZED; + + return !error; +} + +FLAC_API FLAC__bool FLAC__stream_encoder_set_ogg_serial_number(FLAC__StreamEncoder *encoder, long value) +{ + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) + return false; +#if FLAC__HAS_OGG + /* can't check encoder->private_->is_ogg since that's not set until init time */ + FLAC__ogg_encoder_aspect_set_serial_number(&encoder->protected_->ogg_encoder_aspect, value); + return true; +#else + (void)value; + return false; +#endif +} + +FLAC_API FLAC__bool FLAC__stream_encoder_set_verify(FLAC__StreamEncoder *encoder, FLAC__bool value) +{ + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) + return false; +#ifndef FLAC__MANDATORY_VERIFY_WHILE_ENCODING + encoder->protected_->verify = value; +#endif + return true; +} + +FLAC_API FLAC__bool FLAC__stream_encoder_set_streamable_subset(FLAC__StreamEncoder *encoder, FLAC__bool value) +{ + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) + return false; + encoder->protected_->streamable_subset = value; + return true; +} + +FLAC_API FLAC__bool FLAC__stream_encoder_set_do_md5(FLAC__StreamEncoder *encoder, FLAC__bool value) +{ + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) + return false; + encoder->protected_->do_md5 = value; + return true; +} + +FLAC_API FLAC__bool FLAC__stream_encoder_set_channels(FLAC__StreamEncoder *encoder, unsigned value) +{ + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) + return false; + encoder->protected_->channels = value; + return true; +} + +FLAC_API FLAC__bool FLAC__stream_encoder_set_bits_per_sample(FLAC__StreamEncoder *encoder, unsigned value) +{ + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) + return false; + encoder->protected_->bits_per_sample = value; + return true; +} + +FLAC_API FLAC__bool FLAC__stream_encoder_set_sample_rate(FLAC__StreamEncoder *encoder, unsigned value) +{ + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) + return false; + encoder->protected_->sample_rate = value; + return true; +} + +FLAC_API FLAC__bool FLAC__stream_encoder_set_compression_level(FLAC__StreamEncoder *encoder, unsigned value) +{ + FLAC__bool ok = true; + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) + return false; + if(value >= sizeof(compression_levels_)/sizeof(compression_levels_[0])) + value = sizeof(compression_levels_)/sizeof(compression_levels_[0]) - 1; + ok &= FLAC__stream_encoder_set_do_mid_side_stereo (encoder, compression_levels_[value].do_mid_side_stereo); + ok &= FLAC__stream_encoder_set_loose_mid_side_stereo (encoder, compression_levels_[value].loose_mid_side_stereo); +#ifndef FLAC__INTEGER_ONLY_LIBRARY +#if 1 + ok &= FLAC__stream_encoder_set_apodization (encoder, compression_levels_[value].apodization); +#else + /* equivalent to -A tukey(0.5) */ + encoder->protected_->num_apodizations = 1; + encoder->protected_->apodizations[0].type = FLAC__APODIZATION_TUKEY; + encoder->protected_->apodizations[0].parameters.tukey.p = 0.5; +#endif +#endif + ok &= FLAC__stream_encoder_set_max_lpc_order (encoder, compression_levels_[value].max_lpc_order); + ok &= FLAC__stream_encoder_set_qlp_coeff_precision (encoder, compression_levels_[value].qlp_coeff_precision); + ok &= FLAC__stream_encoder_set_do_qlp_coeff_prec_search (encoder, compression_levels_[value].do_qlp_coeff_prec_search); + ok &= FLAC__stream_encoder_set_do_escape_coding (encoder, compression_levels_[value].do_escape_coding); + ok &= FLAC__stream_encoder_set_do_exhaustive_model_search (encoder, compression_levels_[value].do_exhaustive_model_search); + ok &= FLAC__stream_encoder_set_min_residual_partition_order(encoder, compression_levels_[value].min_residual_partition_order); + ok &= FLAC__stream_encoder_set_max_residual_partition_order(encoder, compression_levels_[value].max_residual_partition_order); + ok &= FLAC__stream_encoder_set_rice_parameter_search_dist (encoder, compression_levels_[value].rice_parameter_search_dist); + return ok; +} + +FLAC_API FLAC__bool FLAC__stream_encoder_set_blocksize(FLAC__StreamEncoder *encoder, unsigned value) +{ + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) + return false; + encoder->protected_->blocksize = value; + return true; +} + +FLAC_API FLAC__bool FLAC__stream_encoder_set_do_mid_side_stereo(FLAC__StreamEncoder *encoder, FLAC__bool value) +{ + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) + return false; + encoder->protected_->do_mid_side_stereo = value; + return true; +} + +FLAC_API FLAC__bool FLAC__stream_encoder_set_loose_mid_side_stereo(FLAC__StreamEncoder *encoder, FLAC__bool value) +{ + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) + return false; + encoder->protected_->loose_mid_side_stereo = value; + return true; +} + +/*@@@@add to tests*/ +FLAC_API FLAC__bool FLAC__stream_encoder_set_apodization(FLAC__StreamEncoder *encoder, const char *specification) +{ + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + FLAC__ASSERT(0 != specification); + if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) + return false; +#ifdef FLAC__INTEGER_ONLY_LIBRARY + (void)specification; /* silently ignore since we haven't integerized; will always use a rectangular window */ +#else + encoder->protected_->num_apodizations = 0; + while(1) { + const char *s = strchr(specification, ';'); + const size_t n = s? (size_t)(s - specification) : strlen(specification); + if (n==8 && 0 == strncmp("bartlett" , specification, n)) + encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BARTLETT; + else if(n==13 && 0 == strncmp("bartlett_hann", specification, n)) + encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BARTLETT_HANN; + else if(n==8 && 0 == strncmp("blackman" , specification, n)) + encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BLACKMAN; + else if(n==26 && 0 == strncmp("blackman_harris_4term_92db", specification, n)) + encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BLACKMAN_HARRIS_4TERM_92DB_SIDELOBE; + else if(n==6 && 0 == strncmp("connes" , specification, n)) + encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_CONNES; + else if(n==7 && 0 == strncmp("flattop" , specification, n)) + encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_FLATTOP; + else if(n>7 && 0 == strncmp("gauss(" , specification, 6)) { + FLAC__real stddev = (FLAC__real)strtod(specification+6, 0); + if (stddev > 0.0 && stddev <= 0.5) { + encoder->protected_->apodizations[encoder->protected_->num_apodizations].parameters.gauss.stddev = stddev; + encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_GAUSS; + } + } + else if(n==7 && 0 == strncmp("hamming" , specification, n)) + encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_HAMMING; + else if(n==4 && 0 == strncmp("hann" , specification, n)) + encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_HANN; + else if(n==13 && 0 == strncmp("kaiser_bessel", specification, n)) + encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_KAISER_BESSEL; + else if(n==7 && 0 == strncmp("nuttall" , specification, n)) + encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_NUTTALL; + else if(n==9 && 0 == strncmp("rectangle" , specification, n)) + encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_RECTANGLE; + else if(n==8 && 0 == strncmp("triangle" , specification, n)) + encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_TRIANGLE; + else if(n>7 && 0 == strncmp("tukey(" , specification, 6)) { + FLAC__real p = (FLAC__real)strtod(specification+6, 0); + if (p >= 0.0 && p <= 1.0) { + encoder->protected_->apodizations[encoder->protected_->num_apodizations].parameters.tukey.p = p; + encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_TUKEY; + } + } + else if(n>15 && 0 == strncmp("partial_tukey(" , specification, 14)) { + FLAC__int32 tukey_parts = (FLAC__int32)strtod(specification+14, 0); + const char *si_1 = strchr(specification, '/'); + FLAC__real overlap = si_1?flac_min((FLAC__real)strtod(si_1+1, 0),0.99f):0.1f; + FLAC__real overlap_units = 1.0f/(1.0f - overlap) - 1.0f; + const char *si_2 = strchr((si_1?(si_1+1):specification), '/'); + FLAC__real tukey_p = si_2?(FLAC__real)strtod(si_2+1, 0):0.2f; + + if (tukey_parts <= 1) { + encoder->protected_->apodizations[encoder->protected_->num_apodizations].parameters.tukey.p = tukey_p; + encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_TUKEY; + }else if (encoder->protected_->num_apodizations + tukey_parts < 32){ + FLAC__int32 m; + for(m = 0; m < tukey_parts; m++){ + encoder->protected_->apodizations[encoder->protected_->num_apodizations].parameters.multiple_tukey.p = tukey_p; + encoder->protected_->apodizations[encoder->protected_->num_apodizations].parameters.multiple_tukey.start = m/(tukey_parts+overlap_units); + encoder->protected_->apodizations[encoder->protected_->num_apodizations].parameters.multiple_tukey.end = (m+1+overlap_units)/(tukey_parts+overlap_units); + encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_PARTIAL_TUKEY; + } + } + } + else if(n>16 && 0 == strncmp("punchout_tukey(" , specification, 15)) { + FLAC__int32 tukey_parts = (FLAC__int32)strtod(specification+15, 0); + const char *si_1 = strchr(specification, '/'); + FLAC__real overlap = si_1?flac_min((FLAC__real)strtod(si_1+1, 0),0.99f):0.2f; + FLAC__real overlap_units = 1.0f/(1.0f - overlap) - 1.0f; + const char *si_2 = strchr((si_1?(si_1+1):specification), '/'); + FLAC__real tukey_p = si_2?(FLAC__real)strtod(si_2+1, 0):0.2f; + + if (tukey_parts <= 1) { + encoder->protected_->apodizations[encoder->protected_->num_apodizations].parameters.tukey.p = tukey_p; + encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_TUKEY; + }else if (encoder->protected_->num_apodizations + tukey_parts < 32){ + FLAC__int32 m; + for(m = 0; m < tukey_parts; m++){ + encoder->protected_->apodizations[encoder->protected_->num_apodizations].parameters.multiple_tukey.p = tukey_p; + encoder->protected_->apodizations[encoder->protected_->num_apodizations].parameters.multiple_tukey.start = m/(tukey_parts+overlap_units); + encoder->protected_->apodizations[encoder->protected_->num_apodizations].parameters.multiple_tukey.end = (m+1+overlap_units)/(tukey_parts+overlap_units); + encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_PUNCHOUT_TUKEY; + } + } + } + else if(n==5 && 0 == strncmp("welch" , specification, n)) + encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_WELCH; + if (encoder->protected_->num_apodizations == 32) + break; + if (s) + specification = s+1; + else + break; + } + if(encoder->protected_->num_apodizations == 0) { + encoder->protected_->num_apodizations = 1; + encoder->protected_->apodizations[0].type = FLAC__APODIZATION_TUKEY; + encoder->protected_->apodizations[0].parameters.tukey.p = 0.5; + } +#endif + return true; +} + +FLAC_API FLAC__bool FLAC__stream_encoder_set_max_lpc_order(FLAC__StreamEncoder *encoder, unsigned value) +{ + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) + return false; + encoder->protected_->max_lpc_order = value; + return true; +} + +FLAC_API FLAC__bool FLAC__stream_encoder_set_qlp_coeff_precision(FLAC__StreamEncoder *encoder, unsigned value) +{ + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) + return false; + encoder->protected_->qlp_coeff_precision = value; + return true; +} + +FLAC_API FLAC__bool FLAC__stream_encoder_set_do_qlp_coeff_prec_search(FLAC__StreamEncoder *encoder, FLAC__bool value) +{ + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) + return false; + encoder->protected_->do_qlp_coeff_prec_search = value; + return true; +} + +FLAC_API FLAC__bool FLAC__stream_encoder_set_do_escape_coding(FLAC__StreamEncoder *encoder, FLAC__bool value) +{ + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) + return false; +#if 0 + /*@@@ deprecated: */ + encoder->protected_->do_escape_coding = value; +#else + (void)value; +#endif + return true; +} + +FLAC_API FLAC__bool FLAC__stream_encoder_set_do_exhaustive_model_search(FLAC__StreamEncoder *encoder, FLAC__bool value) +{ + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) + return false; + encoder->protected_->do_exhaustive_model_search = value; + return true; +} + +FLAC_API FLAC__bool FLAC__stream_encoder_set_min_residual_partition_order(FLAC__StreamEncoder *encoder, unsigned value) +{ + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) + return false; + encoder->protected_->min_residual_partition_order = value; + return true; +} + +FLAC_API FLAC__bool FLAC__stream_encoder_set_max_residual_partition_order(FLAC__StreamEncoder *encoder, unsigned value) +{ + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) + return false; + encoder->protected_->max_residual_partition_order = value; + return true; +} + +FLAC_API FLAC__bool FLAC__stream_encoder_set_rice_parameter_search_dist(FLAC__StreamEncoder *encoder, unsigned value) +{ + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) + return false; +#if 0 + /*@@@ deprecated: */ + encoder->protected_->rice_parameter_search_dist = value; +#else + (void)value; +#endif + return true; +} + +FLAC_API FLAC__bool FLAC__stream_encoder_set_total_samples_estimate(FLAC__StreamEncoder *encoder, FLAC__uint64 value) +{ + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) + return false; + value = flac_min(value, (FLAC__U64L(1) << FLAC__STREAM_METADATA_STREAMINFO_TOTAL_SAMPLES_LEN) - 1); + encoder->protected_->total_samples_estimate = value; + return true; +} + +FLAC_API FLAC__bool FLAC__stream_encoder_set_metadata(FLAC__StreamEncoder *encoder, FLAC__StreamMetadata **metadata, unsigned num_blocks) +{ + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) + return false; + if(0 == metadata) + num_blocks = 0; + if(0 == num_blocks) + metadata = 0; + /* realloc() does not do exactly what we want so... */ + if(encoder->protected_->metadata) { + free(encoder->protected_->metadata); + encoder->protected_->metadata = 0; + encoder->protected_->num_metadata_blocks = 0; + } + if(num_blocks) { + FLAC__StreamMetadata **m; + if(0 == (m = safe_malloc_mul_2op_p(sizeof(m[0]), /*times*/num_blocks))) + return false; + memcpy(m, metadata, sizeof(m[0]) * num_blocks); + encoder->protected_->metadata = m; + encoder->protected_->num_metadata_blocks = num_blocks; + } +#if FLAC__HAS_OGG + if(!FLAC__ogg_encoder_aspect_set_num_metadata(&encoder->protected_->ogg_encoder_aspect, num_blocks)) + return false; +#endif + return true; +} + +/* + * These three functions are not static, but not publically exposed in + * include/FLAC/ either. They are used by the test suite. + */ +FLAC_API FLAC__bool FLAC__stream_encoder_disable_constant_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value) +{ + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) + return false; + encoder->private_->disable_constant_subframes = value; + return true; +} + +FLAC_API FLAC__bool FLAC__stream_encoder_disable_fixed_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value) +{ + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) + return false; + encoder->private_->disable_fixed_subframes = value; + return true; +} + +FLAC_API FLAC__bool FLAC__stream_encoder_disable_verbatim_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value) +{ + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) + return false; + encoder->private_->disable_verbatim_subframes = value; + return true; +} + +FLAC_API FLAC__StreamEncoderState FLAC__stream_encoder_get_state(const FLAC__StreamEncoder *encoder) +{ + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + return encoder->protected_->state; +} + +FLAC_API FLAC__StreamDecoderState FLAC__stream_encoder_get_verify_decoder_state(const FLAC__StreamEncoder *encoder) +{ + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + if(encoder->protected_->verify) + return FLAC__stream_decoder_get_state(encoder->private_->verify.decoder); + else + return FLAC__STREAM_DECODER_UNINITIALIZED; +} + +FLAC_API const char *FLAC__stream_encoder_get_resolved_state_string(const FLAC__StreamEncoder *encoder) +{ + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + if(encoder->protected_->state != FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR) + return FLAC__StreamEncoderStateString[encoder->protected_->state]; + else + return FLAC__stream_decoder_get_resolved_state_string(encoder->private_->verify.decoder); +} + +FLAC_API void FLAC__stream_encoder_get_verify_decoder_error_stats(const FLAC__StreamEncoder *encoder, FLAC__uint64 *absolute_sample, unsigned *frame_number, unsigned *channel, unsigned *sample, FLAC__int32 *expected, FLAC__int32 *got) +{ + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + if(0 != absolute_sample) + *absolute_sample = encoder->private_->verify.error_stats.absolute_sample; + if(0 != frame_number) + *frame_number = encoder->private_->verify.error_stats.frame_number; + if(0 != channel) + *channel = encoder->private_->verify.error_stats.channel; + if(0 != sample) + *sample = encoder->private_->verify.error_stats.sample; + if(0 != expected) + *expected = encoder->private_->verify.error_stats.expected; + if(0 != got) + *got = encoder->private_->verify.error_stats.got; +} + +FLAC_API FLAC__bool FLAC__stream_encoder_get_verify(const FLAC__StreamEncoder *encoder) +{ + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + return encoder->protected_->verify; +} + +FLAC_API FLAC__bool FLAC__stream_encoder_get_streamable_subset(const FLAC__StreamEncoder *encoder) +{ + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + return encoder->protected_->streamable_subset; +} + +FLAC_API FLAC__bool FLAC__stream_encoder_get_do_md5(const FLAC__StreamEncoder *encoder) +{ + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + return encoder->protected_->do_md5; +} + +FLAC_API unsigned FLAC__stream_encoder_get_channels(const FLAC__StreamEncoder *encoder) +{ + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + return encoder->protected_->channels; +} + +FLAC_API unsigned FLAC__stream_encoder_get_bits_per_sample(const FLAC__StreamEncoder *encoder) +{ + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + return encoder->protected_->bits_per_sample; +} + +FLAC_API unsigned FLAC__stream_encoder_get_sample_rate(const FLAC__StreamEncoder *encoder) +{ + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + return encoder->protected_->sample_rate; +} + +FLAC_API unsigned FLAC__stream_encoder_get_blocksize(const FLAC__StreamEncoder *encoder) +{ + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + return encoder->protected_->blocksize; +} + +FLAC_API FLAC__bool FLAC__stream_encoder_get_do_mid_side_stereo(const FLAC__StreamEncoder *encoder) +{ + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + return encoder->protected_->do_mid_side_stereo; +} + +FLAC_API FLAC__bool FLAC__stream_encoder_get_loose_mid_side_stereo(const FLAC__StreamEncoder *encoder) +{ + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + return encoder->protected_->loose_mid_side_stereo; +} + +FLAC_API unsigned FLAC__stream_encoder_get_max_lpc_order(const FLAC__StreamEncoder *encoder) +{ + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + return encoder->protected_->max_lpc_order; +} + +FLAC_API unsigned FLAC__stream_encoder_get_qlp_coeff_precision(const FLAC__StreamEncoder *encoder) +{ + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + return encoder->protected_->qlp_coeff_precision; +} + +FLAC_API FLAC__bool FLAC__stream_encoder_get_do_qlp_coeff_prec_search(const FLAC__StreamEncoder *encoder) +{ + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + return encoder->protected_->do_qlp_coeff_prec_search; +} + +FLAC_API FLAC__bool FLAC__stream_encoder_get_do_escape_coding(const FLAC__StreamEncoder *encoder) +{ + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + return encoder->protected_->do_escape_coding; +} + +FLAC_API FLAC__bool FLAC__stream_encoder_get_do_exhaustive_model_search(const FLAC__StreamEncoder *encoder) +{ + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + return encoder->protected_->do_exhaustive_model_search; +} + +FLAC_API unsigned FLAC__stream_encoder_get_min_residual_partition_order(const FLAC__StreamEncoder *encoder) +{ + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + return encoder->protected_->min_residual_partition_order; +} + +FLAC_API unsigned FLAC__stream_encoder_get_max_residual_partition_order(const FLAC__StreamEncoder *encoder) +{ + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + return encoder->protected_->max_residual_partition_order; +} + +FLAC_API unsigned FLAC__stream_encoder_get_rice_parameter_search_dist(const FLAC__StreamEncoder *encoder) +{ + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + return encoder->protected_->rice_parameter_search_dist; +} + +FLAC_API FLAC__uint64 FLAC__stream_encoder_get_total_samples_estimate(const FLAC__StreamEncoder *encoder) +{ + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + return encoder->protected_->total_samples_estimate; +} + +FLAC_API FLAC__bool FLAC__stream_encoder_process(FLAC__StreamEncoder *encoder, const FLAC__int32 * const buffer[], unsigned samples) +{ + unsigned i, j = 0, channel; + const unsigned channels = encoder->protected_->channels, blocksize = encoder->protected_->blocksize; + + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK); + + do { + const unsigned n = flac_min(blocksize+OVERREAD_-encoder->private_->current_sample_number, samples-j); + + if(encoder->protected_->verify) + append_to_verify_fifo_(&encoder->private_->verify.input_fifo, buffer, j, channels, n); + + for(channel = 0; channel < channels; channel++) { + if (buffer[channel] == NULL) { + return false; + } + memcpy(&encoder->private_->integer_signal[channel][encoder->private_->current_sample_number], &buffer[channel][j], sizeof(buffer[channel][0]) * n); + } + + if(encoder->protected_->do_mid_side_stereo) { + FLAC__ASSERT(channels == 2); + /* "i <= blocksize" to overread 1 sample; see comment in OVERREAD_ decl */ + for(i = encoder->private_->current_sample_number; i <= blocksize && j < samples; i++, j++) { + encoder->private_->integer_signal_mid_side[1][i] = buffer[0][j] - buffer[1][j]; + encoder->private_->integer_signal_mid_side[0][i] = (buffer[0][j] + buffer[1][j]) >> 1; /* NOTE: not the same as 'mid = (buffer[0][j] + buffer[1][j]) / 2' ! */ + } + } + else + j += n; + + encoder->private_->current_sample_number += n; + + /* we only process if we have a full block + 1 extra sample; final block is always handled by FLAC__stream_encoder_finish() */ + if(encoder->private_->current_sample_number > blocksize) { + FLAC__ASSERT(encoder->private_->current_sample_number == blocksize+OVERREAD_); + FLAC__ASSERT(OVERREAD_ == 1); /* assert we only overread 1 sample which simplifies the rest of the code below */ + if(!process_frame_(encoder, /*is_fractional_block=*/false, /*is_last_block=*/false)) + return false; + /* move unprocessed overread samples to beginnings of arrays */ + for(channel = 0; channel < channels; channel++) + encoder->private_->integer_signal[channel][0] = encoder->private_->integer_signal[channel][blocksize]; + if(encoder->protected_->do_mid_side_stereo) { + encoder->private_->integer_signal_mid_side[0][0] = encoder->private_->integer_signal_mid_side[0][blocksize]; + encoder->private_->integer_signal_mid_side[1][0] = encoder->private_->integer_signal_mid_side[1][blocksize]; + } + encoder->private_->current_sample_number = 1; + } + } while(j < samples); + + return true; +} + +FLAC_API FLAC__bool FLAC__stream_encoder_process_interleaved(FLAC__StreamEncoder *encoder, const FLAC__int32 buffer[], unsigned samples) +{ + unsigned i, j, k, channel; + FLAC__int32 x, mid, side; + const unsigned channels = encoder->protected_->channels, blocksize = encoder->protected_->blocksize; + + FLAC__ASSERT(0 != encoder); + FLAC__ASSERT(0 != encoder->private_); + FLAC__ASSERT(0 != encoder->protected_); + FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK); + + j = k = 0; + /* + * we have several flavors of the same basic loop, optimized for + * different conditions: + */ + if(encoder->protected_->do_mid_side_stereo && channels == 2) { + /* + * stereo coding: unroll channel loop + */ + do { + if(encoder->protected_->verify) + append_to_verify_fifo_interleaved_(&encoder->private_->verify.input_fifo, buffer, j, channels, flac_min(blocksize+OVERREAD_-encoder->private_->current_sample_number, samples-j)); + + /* "i <= blocksize" to overread 1 sample; see comment in OVERREAD_ decl */ + for(i = encoder->private_->current_sample_number; i <= blocksize && j < samples; i++, j++) { + encoder->private_->integer_signal[0][i] = mid = side = buffer[k++]; + x = buffer[k++]; + encoder->private_->integer_signal[1][i] = x; + mid += x; + side -= x; + mid >>= 1; /* NOTE: not the same as 'mid = (left + right) / 2' ! */ + encoder->private_->integer_signal_mid_side[1][i] = side; + encoder->private_->integer_signal_mid_side[0][i] = mid; + } + encoder->private_->current_sample_number = i; + /* we only process if we have a full block + 1 extra sample; final block is always handled by FLAC__stream_encoder_finish() */ + if(i > blocksize) { + if(!process_frame_(encoder, /*is_fractional_block=*/false, /*is_last_block=*/false)) + return false; + /* move unprocessed overread samples to beginnings of arrays */ + FLAC__ASSERT(i == blocksize+OVERREAD_); + FLAC__ASSERT(OVERREAD_ == 1); /* assert we only overread 1 sample which simplifies the rest of the code below */ + encoder->private_->integer_signal[0][0] = encoder->private_->integer_signal[0][blocksize]; + encoder->private_->integer_signal[1][0] = encoder->private_->integer_signal[1][blocksize]; + encoder->private_->integer_signal_mid_side[0][0] = encoder->private_->integer_signal_mid_side[0][blocksize]; + encoder->private_->integer_signal_mid_side[1][0] = encoder->private_->integer_signal_mid_side[1][blocksize]; + encoder->private_->current_sample_number = 1; + } + } while(j < samples); + } + else { + /* + * independent channel coding: buffer each channel in inner loop + */ + do { + if(encoder->protected_->verify) + append_to_verify_fifo_interleaved_(&encoder->private_->verify.input_fifo, buffer, j, channels, flac_min(blocksize+OVERREAD_-encoder->private_->current_sample_number, samples-j)); + + /* "i <= blocksize" to overread 1 sample; see comment in OVERREAD_ decl */ + for(i = encoder->private_->current_sample_number; i <= blocksize && j < samples; i++, j++) { + for(channel = 0; channel < channels; channel++) + encoder->private_->integer_signal[channel][i] = buffer[k++]; + } + encoder->private_->current_sample_number = i; + /* we only process if we have a full block + 1 extra sample; final block is always handled by FLAC__stream_encoder_finish() */ + if(i > blocksize) { + if(!process_frame_(encoder, /*is_fractional_block=*/false, /*is_last_block=*/false)) + return false; + /* move unprocessed overread samples to beginnings of arrays */ + FLAC__ASSERT(i == blocksize+OVERREAD_); + FLAC__ASSERT(OVERREAD_ == 1); /* assert we only overread 1 sample which simplifies the rest of the code below */ + for(channel = 0; channel < channels; channel++) + encoder->private_->integer_signal[channel][0] = encoder->private_->integer_signal[channel][blocksize]; + encoder->private_->current_sample_number = 1; + } + } while(j < samples); + } + + return true; +} + +/*********************************************************************** + * + * Private class methods + * + ***********************************************************************/ + +void set_defaults_(FLAC__StreamEncoder *encoder) +{ + FLAC__ASSERT(0 != encoder); + +#ifdef FLAC__MANDATORY_VERIFY_WHILE_ENCODING + encoder->protected_->verify = true; +#else + encoder->protected_->verify = false; +#endif + encoder->protected_->streamable_subset = true; + encoder->protected_->do_md5 = true; + encoder->protected_->do_mid_side_stereo = false; + encoder->protected_->loose_mid_side_stereo = false; + encoder->protected_->channels = 2; + encoder->protected_->bits_per_sample = 16; + encoder->protected_->sample_rate = 44100; + encoder->protected_->blocksize = 0; +#ifndef FLAC__INTEGER_ONLY_LIBRARY + encoder->protected_->num_apodizations = 1; + encoder->protected_->apodizations[0].type = FLAC__APODIZATION_TUKEY; + encoder->protected_->apodizations[0].parameters.tukey.p = 0.5; +#endif + encoder->protected_->max_lpc_order = 0; + encoder->protected_->qlp_coeff_precision = 0; + encoder->protected_->do_qlp_coeff_prec_search = false; + encoder->protected_->do_exhaustive_model_search = false; + encoder->protected_->do_escape_coding = false; + encoder->protected_->min_residual_partition_order = 0; + encoder->protected_->max_residual_partition_order = 0; + encoder->protected_->rice_parameter_search_dist = 0; + encoder->protected_->total_samples_estimate = 0; + encoder->protected_->metadata = 0; + encoder->protected_->num_metadata_blocks = 0; + + encoder->private_->seek_table = 0; + encoder->private_->disable_constant_subframes = false; + encoder->private_->disable_fixed_subframes = false; + encoder->private_->disable_verbatim_subframes = false; + encoder->private_->is_ogg = false; + encoder->private_->read_callback = 0; + encoder->private_->write_callback = 0; + encoder->private_->seek_callback = 0; + encoder->private_->tell_callback = 0; + encoder->private_->metadata_callback = 0; + encoder->private_->progress_callback = 0; + encoder->private_->client_data = 0; + +#if FLAC__HAS_OGG + FLAC__ogg_encoder_aspect_set_defaults(&encoder->protected_->ogg_encoder_aspect); +#endif + + FLAC__stream_encoder_set_compression_level(encoder, 5); +} + +void free_(FLAC__StreamEncoder *encoder) +{ + unsigned i, channel; + + FLAC__ASSERT(0 != encoder); + if(encoder->protected_->metadata) { + free(encoder->protected_->metadata); + encoder->protected_->metadata = 0; + encoder->protected_->num_metadata_blocks = 0; + } + for(i = 0; i < encoder->protected_->channels; i++) { + if(0 != encoder->private_->integer_signal_unaligned[i]) { + free(encoder->private_->integer_signal_unaligned[i]); + encoder->private_->integer_signal_unaligned[i] = 0; + } +#ifndef FLAC__INTEGER_ONLY_LIBRARY + if(0 != encoder->private_->real_signal_unaligned[i]) { + free(encoder->private_->real_signal_unaligned[i]); + encoder->private_->real_signal_unaligned[i] = 0; + } +#endif + } + for(i = 0; i < 2; i++) { + if(0 != encoder->private_->integer_signal_mid_side_unaligned[i]) { + free(encoder->private_->integer_signal_mid_side_unaligned[i]); + encoder->private_->integer_signal_mid_side_unaligned[i] = 0; + } +#ifndef FLAC__INTEGER_ONLY_LIBRARY + if(0 != encoder->private_->real_signal_mid_side_unaligned[i]) { + free(encoder->private_->real_signal_mid_side_unaligned[i]); + encoder->private_->real_signal_mid_side_unaligned[i] = 0; + } +#endif + } +#ifndef FLAC__INTEGER_ONLY_LIBRARY + for(i = 0; i < encoder->protected_->num_apodizations; i++) { + if(0 != encoder->private_->window_unaligned[i]) { + free(encoder->private_->window_unaligned[i]); + encoder->private_->window_unaligned[i] = 0; + } + } + if(0 != encoder->private_->windowed_signal_unaligned) { + free(encoder->private_->windowed_signal_unaligned); + encoder->private_->windowed_signal_unaligned = 0; + } +#endif + for(channel = 0; channel < encoder->protected_->channels; channel++) { + for(i = 0; i < 2; i++) { + if(0 != encoder->private_->residual_workspace_unaligned[channel][i]) { + free(encoder->private_->residual_workspace_unaligned[channel][i]); + encoder->private_->residual_workspace_unaligned[channel][i] = 0; + } + } + } + for(channel = 0; channel < 2; channel++) { + for(i = 0; i < 2; i++) { + if(0 != encoder->private_->residual_workspace_mid_side_unaligned[channel][i]) { + free(encoder->private_->residual_workspace_mid_side_unaligned[channel][i]); + encoder->private_->residual_workspace_mid_side_unaligned[channel][i] = 0; + } + } + } + if(0 != encoder->private_->abs_residual_partition_sums_unaligned) { + free(encoder->private_->abs_residual_partition_sums_unaligned); + encoder->private_->abs_residual_partition_sums_unaligned = 0; + } + if(0 != encoder->private_->raw_bits_per_partition_unaligned) { + free(encoder->private_->raw_bits_per_partition_unaligned); + encoder->private_->raw_bits_per_partition_unaligned = 0; + } + if(encoder->protected_->verify) { + for(i = 0; i < encoder->protected_->channels; i++) { + if(0 != encoder->private_->verify.input_fifo.data[i]) { + free(encoder->private_->verify.input_fifo.data[i]); + encoder->private_->verify.input_fifo.data[i] = 0; + } + } + } + FLAC__bitwriter_free(encoder->private_->frame); +} + +FLAC__bool resize_buffers_(FLAC__StreamEncoder *encoder, unsigned new_blocksize) +{ + FLAC__bool ok; + unsigned i, channel; + + FLAC__ASSERT(new_blocksize > 0); + FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK); + FLAC__ASSERT(encoder->private_->current_sample_number == 0); + + /* To avoid excessive malloc'ing, we only grow the buffer; no shrinking. */ + if(new_blocksize <= encoder->private_->input_capacity) + return true; + + ok = true; + + /* WATCHOUT: FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32_mmx() and ..._intrin_sse2() + * require that the input arrays (in our case the integer signals) + * have a buffer of up to 3 zeroes in front (at negative indices) for + * alignment purposes; we use 4 in front to keep the data well-aligned. + */ + + for(i = 0; ok && i < encoder->protected_->channels; i++) { + ok = ok && FLAC__memory_alloc_aligned_int32_array(new_blocksize+4+OVERREAD_, &encoder->private_->integer_signal_unaligned[i], &encoder->private_->integer_signal[i]); + memset(encoder->private_->integer_signal[i], 0, sizeof(FLAC__int32)*4); + encoder->private_->integer_signal[i] += 4; +#ifndef FLAC__INTEGER_ONLY_LIBRARY +#if 0 /* @@@ currently unused */ + if(encoder->protected_->max_lpc_order > 0) + ok = ok && FLAC__memory_alloc_aligned_real_array(new_blocksize+OVERREAD_, &encoder->private_->real_signal_unaligned[i], &encoder->private_->real_signal[i]); +#endif +#endif + } + for(i = 0; ok && i < 2; i++) { + ok = ok && FLAC__memory_alloc_aligned_int32_array(new_blocksize+4+OVERREAD_, &encoder->private_->integer_signal_mid_side_unaligned[i], &encoder->private_->integer_signal_mid_side[i]); + memset(encoder->private_->integer_signal_mid_side[i], 0, sizeof(FLAC__int32)*4); + encoder->private_->integer_signal_mid_side[i] += 4; +#ifndef FLAC__INTEGER_ONLY_LIBRARY +#if 0 /* @@@ currently unused */ + if(encoder->protected_->max_lpc_order > 0) + ok = ok && FLAC__memory_alloc_aligned_real_array(new_blocksize+OVERREAD_, &encoder->private_->real_signal_mid_side_unaligned[i], &encoder->private_->real_signal_mid_side[i]); +#endif +#endif + } +#ifndef FLAC__INTEGER_ONLY_LIBRARY + if(ok && encoder->protected_->max_lpc_order > 0) { + for(i = 0; ok && i < encoder->protected_->num_apodizations; i++) + ok = ok && FLAC__memory_alloc_aligned_real_array(new_blocksize, &encoder->private_->window_unaligned[i], &encoder->private_->window[i]); + ok = ok && FLAC__memory_alloc_aligned_real_array(new_blocksize, &encoder->private_->windowed_signal_unaligned, &encoder->private_->windowed_signal); + } +#endif + for(channel = 0; ok && channel < encoder->protected_->channels; channel++) { + for(i = 0; ok && i < 2; i++) { + ok = ok && FLAC__memory_alloc_aligned_int32_array(new_blocksize, &encoder->private_->residual_workspace_unaligned[channel][i], &encoder->private_->residual_workspace[channel][i]); + } + } + for(channel = 0; ok && channel < 2; channel++) { + for(i = 0; ok && i < 2; i++) { + ok = ok && FLAC__memory_alloc_aligned_int32_array(new_blocksize, &encoder->private_->residual_workspace_mid_side_unaligned[channel][i], &encoder->private_->residual_workspace_mid_side[channel][i]); + } + } + /* the *2 is an approximation to the series 1 + 1/2 + 1/4 + ... that sums tree occupies in a flat array */ + /*@@@ new_blocksize*2 is too pessimistic, but to fix, we need smarter logic because a smaller new_blocksize can actually increase the # of partitions; would require moving this out into a separate function, then checking its capacity against the need of the current blocksize&min/max_partition_order (and maybe predictor order) */ + ok = ok && FLAC__memory_alloc_aligned_uint64_array(new_blocksize * 2, &encoder->private_->abs_residual_partition_sums_unaligned, &encoder->private_->abs_residual_partition_sums); + if(encoder->protected_->do_escape_coding) + ok = ok && FLAC__memory_alloc_aligned_unsigned_array(new_blocksize * 2, &encoder->private_->raw_bits_per_partition_unaligned, &encoder->private_->raw_bits_per_partition); + + /* now adjust the windows if the blocksize has changed */ +#ifndef FLAC__INTEGER_ONLY_LIBRARY + if(ok && new_blocksize != encoder->private_->input_capacity && encoder->protected_->max_lpc_order > 0) { + for(i = 0; ok && i < encoder->protected_->num_apodizations; i++) { + switch(encoder->protected_->apodizations[i].type) { + case FLAC__APODIZATION_BARTLETT: + FLAC__window_bartlett(encoder->private_->window[i], new_blocksize); + break; + case FLAC__APODIZATION_BARTLETT_HANN: + FLAC__window_bartlett_hann(encoder->private_->window[i], new_blocksize); + break; + case FLAC__APODIZATION_BLACKMAN: + FLAC__window_blackman(encoder->private_->window[i], new_blocksize); + break; + case FLAC__APODIZATION_BLACKMAN_HARRIS_4TERM_92DB_SIDELOBE: + FLAC__window_blackman_harris_4term_92db_sidelobe(encoder->private_->window[i], new_blocksize); + break; + case FLAC__APODIZATION_CONNES: + FLAC__window_connes(encoder->private_->window[i], new_blocksize); + break; + case FLAC__APODIZATION_FLATTOP: + FLAC__window_flattop(encoder->private_->window[i], new_blocksize); + break; + case FLAC__APODIZATION_GAUSS: + FLAC__window_gauss(encoder->private_->window[i], new_blocksize, encoder->protected_->apodizations[i].parameters.gauss.stddev); + break; + case FLAC__APODIZATION_HAMMING: + FLAC__window_hamming(encoder->private_->window[i], new_blocksize); + break; + case FLAC__APODIZATION_HANN: + FLAC__window_hann(encoder->private_->window[i], new_blocksize); + break; + case FLAC__APODIZATION_KAISER_BESSEL: + FLAC__window_kaiser_bessel(encoder->private_->window[i], new_blocksize); + break; + case FLAC__APODIZATION_NUTTALL: + FLAC__window_nuttall(encoder->private_->window[i], new_blocksize); + break; + case FLAC__APODIZATION_RECTANGLE: + FLAC__window_rectangle(encoder->private_->window[i], new_blocksize); + break; + case FLAC__APODIZATION_TRIANGLE: + FLAC__window_triangle(encoder->private_->window[i], new_blocksize); + break; + case FLAC__APODIZATION_TUKEY: + FLAC__window_tukey(encoder->private_->window[i], new_blocksize, encoder->protected_->apodizations[i].parameters.tukey.p); + break; + case FLAC__APODIZATION_PARTIAL_TUKEY: + FLAC__window_partial_tukey(encoder->private_->window[i], new_blocksize, encoder->protected_->apodizations[i].parameters.multiple_tukey.p, encoder->protected_->apodizations[i].parameters.multiple_tukey.start, encoder->protected_->apodizations[i].parameters.multiple_tukey.end); + break; + case FLAC__APODIZATION_PUNCHOUT_TUKEY: + FLAC__window_punchout_tukey(encoder->private_->window[i], new_blocksize, encoder->protected_->apodizations[i].parameters.multiple_tukey.p, encoder->protected_->apodizations[i].parameters.multiple_tukey.start, encoder->protected_->apodizations[i].parameters.multiple_tukey.end); + break; + case FLAC__APODIZATION_WELCH: + FLAC__window_welch(encoder->private_->window[i], new_blocksize); + break; + default: + FLAC__ASSERT(0); + /* double protection */ + FLAC__window_hann(encoder->private_->window[i], new_blocksize); + break; + } + } + } +#endif + + if(ok) + encoder->private_->input_capacity = new_blocksize; + else + encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR; + + return ok; +} + +FLAC__bool write_bitbuffer_(FLAC__StreamEncoder *encoder, unsigned samples, FLAC__bool is_last_block) +{ + const FLAC__byte *buffer; + size_t bytes; + + FLAC__ASSERT(FLAC__bitwriter_is_byte_aligned(encoder->private_->frame)); + + if(!FLAC__bitwriter_get_buffer(encoder->private_->frame, &buffer, &bytes)) { + encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR; + return false; + } + + if(encoder->protected_->verify) { + encoder->private_->verify.output.data = buffer; + encoder->private_->verify.output.bytes = bytes; + if(encoder->private_->verify.state_hint == ENCODER_IN_MAGIC) { + encoder->private_->verify.needs_magic_hack = true; + } + else { + if(!FLAC__stream_decoder_process_single(encoder->private_->verify.decoder)) { + FLAC__bitwriter_release_buffer(encoder->private_->frame); + FLAC__bitwriter_clear(encoder->private_->frame); + if(encoder->protected_->state != FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA) + encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR; + return false; + } + } + } + + if(write_frame_(encoder, buffer, bytes, samples, is_last_block) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) { + FLAC__bitwriter_release_buffer(encoder->private_->frame); + FLAC__bitwriter_clear(encoder->private_->frame); + encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR; + return false; + } + + FLAC__bitwriter_release_buffer(encoder->private_->frame); + FLAC__bitwriter_clear(encoder->private_->frame); + + if(samples > 0) { + encoder->private_->streaminfo.data.stream_info.min_framesize = flac_min(bytes, encoder->private_->streaminfo.data.stream_info.min_framesize); + encoder->private_->streaminfo.data.stream_info.max_framesize = flac_max(bytes, encoder->private_->streaminfo.data.stream_info.max_framesize); + } + + return true; +} + +FLAC__StreamEncoderWriteStatus write_frame_(FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], size_t bytes, unsigned samples, FLAC__bool is_last_block) +{ + FLAC__StreamEncoderWriteStatus status; + FLAC__uint64 output_position = 0; + +#if FLAC__HAS_OGG == 0 + (void)is_last_block; +#endif + + /* FLAC__STREAM_ENCODER_TELL_STATUS_UNSUPPORTED just means we didn't get the offset; no error */ + if(encoder->private_->tell_callback && encoder->private_->tell_callback(encoder, &output_position, encoder->private_->client_data) == FLAC__STREAM_ENCODER_TELL_STATUS_ERROR) { + encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR; + return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR; + } + + /* + * Watch for the STREAMINFO block and first SEEKTABLE block to go by and store their offsets. + */ + if(samples == 0) { + FLAC__MetadataType type = (buffer[0] & 0x7f); + if(type == FLAC__METADATA_TYPE_STREAMINFO) + encoder->protected_->streaminfo_offset = output_position; + else if(type == FLAC__METADATA_TYPE_SEEKTABLE && encoder->protected_->seektable_offset == 0) + encoder->protected_->seektable_offset = output_position; + } + + /* + * Mark the current seek point if hit (if audio_offset == 0 that + * means we're still writing metadata and haven't hit the first + * frame yet) + */ + if(0 != encoder->private_->seek_table && encoder->protected_->audio_offset > 0 && encoder->private_->seek_table->num_points > 0) { + const unsigned blocksize = FLAC__stream_encoder_get_blocksize(encoder); + const FLAC__uint64 frame_first_sample = encoder->private_->samples_written; + const FLAC__uint64 frame_last_sample = frame_first_sample + (FLAC__uint64)blocksize - 1; + FLAC__uint64 test_sample; + unsigned i; + for(i = encoder->private_->first_seekpoint_to_check; i < encoder->private_->seek_table->num_points; i++) { + test_sample = encoder->private_->seek_table->points[i].sample_number; + if(test_sample > frame_last_sample) { + break; + } + else if(test_sample >= frame_first_sample) { + encoder->private_->seek_table->points[i].sample_number = frame_first_sample; + encoder->private_->seek_table->points[i].stream_offset = output_position - encoder->protected_->audio_offset; + encoder->private_->seek_table->points[i].frame_samples = blocksize; + encoder->private_->first_seekpoint_to_check++; + /* DO NOT: "break;" and here's why: + * The seektable template may contain more than one target + * sample for any given frame; we will keep looping, generating + * duplicate seekpoints for them, and we'll clean it up later, + * just before writing the seektable back to the metadata. + */ + } + else { + encoder->private_->first_seekpoint_to_check++; + } + } + } + +#if FLAC__HAS_OGG + if(encoder->private_->is_ogg) { + status = FLAC__ogg_encoder_aspect_write_callback_wrapper( + &encoder->protected_->ogg_encoder_aspect, + buffer, + bytes, + samples, + encoder->private_->current_frame_number, + is_last_block, + (FLAC__OggEncoderAspectWriteCallbackProxy)encoder->private_->write_callback, + encoder, + encoder->private_->client_data + ); + } + else +#endif + status = encoder->private_->write_callback(encoder, buffer, bytes, samples, encoder->private_->current_frame_number, encoder->private_->client_data); + + if(status == FLAC__STREAM_ENCODER_WRITE_STATUS_OK) { + encoder->private_->bytes_written += bytes; + encoder->private_->samples_written += samples; + /* we keep a high watermark on the number of frames written because + * when the encoder goes back to write metadata, 'current_frame' + * will drop back to 0. + */ + encoder->private_->frames_written = flac_max(encoder->private_->frames_written, encoder->private_->current_frame_number+1); + } + else + encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR; + + return status; +} + +/* Gets called when the encoding process has finished so that we can update the STREAMINFO and SEEKTABLE blocks. */ +void update_metadata_(const FLAC__StreamEncoder *encoder) +{ + FLAC__byte b[flac_max(6u, FLAC__STREAM_METADATA_SEEKPOINT_LENGTH)]; + const FLAC__StreamMetadata *metadata = &encoder->private_->streaminfo; + const FLAC__uint64 samples = metadata->data.stream_info.total_samples; + const unsigned min_framesize = metadata->data.stream_info.min_framesize; + const unsigned max_framesize = metadata->data.stream_info.max_framesize; + const unsigned bps = metadata->data.stream_info.bits_per_sample; + FLAC__StreamEncoderSeekStatus seek_status; + + FLAC__ASSERT(metadata->type == FLAC__METADATA_TYPE_STREAMINFO); + + /* All this is based on intimate knowledge of the stream header + * layout, but a change to the header format that would break this + * would also break all streams encoded in the previous format. + */ + + /* + * Write MD5 signature + */ + { + const unsigned md5_offset = + FLAC__STREAM_METADATA_HEADER_LENGTH + + ( + FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN + + FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN + + FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN + + FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN + + FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN + + FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN + + FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN + + FLAC__STREAM_METADATA_STREAMINFO_TOTAL_SAMPLES_LEN + ) / 8; + + if((seek_status = encoder->private_->seek_callback(encoder, encoder->protected_->streaminfo_offset + md5_offset, encoder->private_->client_data)) != FLAC__STREAM_ENCODER_SEEK_STATUS_OK) { + if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR) + encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR; + return; + } + if(encoder->private_->write_callback(encoder, metadata->data.stream_info.md5sum, 16, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) { + encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR; + return; + } + } + + /* + * Write total samples + */ + { + const unsigned total_samples_byte_offset = + FLAC__STREAM_METADATA_HEADER_LENGTH + + ( + FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN + + FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN + + FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN + + FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN + + FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN + + FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN + + FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN + - 4 + ) / 8; + + b[0] = ((FLAC__byte)(bps-1) << 4) | (FLAC__byte)((samples >> 32) & 0x0F); + b[1] = (FLAC__byte)((samples >> 24) & 0xFF); + b[2] = (FLAC__byte)((samples >> 16) & 0xFF); + b[3] = (FLAC__byte)((samples >> 8) & 0xFF); + b[4] = (FLAC__byte)(samples & 0xFF); + if((seek_status = encoder->private_->seek_callback(encoder, encoder->protected_->streaminfo_offset + total_samples_byte_offset, encoder->private_->client_data)) != FLAC__STREAM_ENCODER_SEEK_STATUS_OK) { + if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR) + encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR; + return; + } + if(encoder->private_->write_callback(encoder, b, 5, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) { + encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR; + return; + } + } + + /* + * Write min/max framesize + */ + { + const unsigned min_framesize_offset = + FLAC__STREAM_METADATA_HEADER_LENGTH + + ( + FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN + + FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN + ) / 8; + + b[0] = (FLAC__byte)((min_framesize >> 16) & 0xFF); + b[1] = (FLAC__byte)((min_framesize >> 8) & 0xFF); + b[2] = (FLAC__byte)(min_framesize & 0xFF); + b[3] = (FLAC__byte)((max_framesize >> 16) & 0xFF); + b[4] = (FLAC__byte)((max_framesize >> 8) & 0xFF); + b[5] = (FLAC__byte)(max_framesize & 0xFF); + if((seek_status = encoder->private_->seek_callback(encoder, encoder->protected_->streaminfo_offset + min_framesize_offset, encoder->private_->client_data)) != FLAC__STREAM_ENCODER_SEEK_STATUS_OK) { + if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR) + encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR; + return; + } + if(encoder->private_->write_callback(encoder, b, 6, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) { + encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR; + return; + } + } + + /* + * Write seektable + */ + if(0 != encoder->private_->seek_table && encoder->private_->seek_table->num_points > 0 && encoder->protected_->seektable_offset > 0) { + unsigned i; + + FLAC__format_seektable_sort(encoder->private_->seek_table); + + FLAC__ASSERT(FLAC__format_seektable_is_legal(encoder->private_->seek_table)); + + if((seek_status = encoder->private_->seek_callback(encoder, encoder->protected_->seektable_offset + FLAC__STREAM_METADATA_HEADER_LENGTH, encoder->private_->client_data)) != FLAC__STREAM_ENCODER_SEEK_STATUS_OK) { + if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR) + encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR; + return; + } + + for(i = 0; i < encoder->private_->seek_table->num_points; i++) { + FLAC__uint64 xx; + unsigned x; + xx = encoder->private_->seek_table->points[i].sample_number; + b[7] = (FLAC__byte)xx; xx >>= 8; + b[6] = (FLAC__byte)xx; xx >>= 8; + b[5] = (FLAC__byte)xx; xx >>= 8; + b[4] = (FLAC__byte)xx; xx >>= 8; + b[3] = (FLAC__byte)xx; xx >>= 8; + b[2] = (FLAC__byte)xx; xx >>= 8; + b[1] = (FLAC__byte)xx; xx >>= 8; + b[0] = (FLAC__byte)xx; xx >>= 8; + xx = encoder->private_->seek_table->points[i].stream_offset; + b[15] = (FLAC__byte)xx; xx >>= 8; + b[14] = (FLAC__byte)xx; xx >>= 8; + b[13] = (FLAC__byte)xx; xx >>= 8; + b[12] = (FLAC__byte)xx; xx >>= 8; + b[11] = (FLAC__byte)xx; xx >>= 8; + b[10] = (FLAC__byte)xx; xx >>= 8; + b[9] = (FLAC__byte)xx; xx >>= 8; + b[8] = (FLAC__byte)xx; xx >>= 8; + x = encoder->private_->seek_table->points[i].frame_samples; + b[17] = (FLAC__byte)x; x >>= 8; + b[16] = (FLAC__byte)x; x >>= 8; + if(encoder->private_->write_callback(encoder, b, 18, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) { + encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR; + return; + } + } + } +} + +#if FLAC__HAS_OGG +/* Gets called when the encoding process has finished so that we can update the STREAMINFO and SEEKTABLE blocks. */ +void update_ogg_metadata_(FLAC__StreamEncoder *encoder) +{ + /* the # of bytes in the 1st packet that precede the STREAMINFO */ + static const unsigned FIRST_OGG_PACKET_STREAMINFO_PREFIX_LENGTH = + FLAC__OGG_MAPPING_PACKET_TYPE_LENGTH + + FLAC__OGG_MAPPING_MAGIC_LENGTH + + FLAC__OGG_MAPPING_VERSION_MAJOR_LENGTH + + FLAC__OGG_MAPPING_VERSION_MINOR_LENGTH + + FLAC__OGG_MAPPING_NUM_HEADERS_LENGTH + + FLAC__STREAM_SYNC_LENGTH + ; + FLAC__byte b[flac_max(6u, FLAC__STREAM_METADATA_SEEKPOINT_LENGTH)]; + const FLAC__StreamMetadata *metadata = &encoder->private_->streaminfo; + const FLAC__uint64 samples = metadata->data.stream_info.total_samples; + const unsigned min_framesize = metadata->data.stream_info.min_framesize; + const unsigned max_framesize = metadata->data.stream_info.max_framesize; + ogg_page page; + + FLAC__ASSERT(metadata->type == FLAC__METADATA_TYPE_STREAMINFO); + FLAC__ASSERT(0 != encoder->private_->seek_callback); + + /* Pre-check that client supports seeking, since we don't want the + * ogg_helper code to ever have to deal with this condition. + */ + if(encoder->private_->seek_callback(encoder, 0, encoder->private_->client_data) == FLAC__STREAM_ENCODER_SEEK_STATUS_UNSUPPORTED) + return; + + /* All this is based on intimate knowledge of the stream header + * layout, but a change to the header format that would break this + * would also break all streams encoded in the previous format. + */ + + /** + ** Write STREAMINFO stats + **/ + simple_ogg_page__init(&page); + if(!simple_ogg_page__get_at(encoder, encoder->protected_->streaminfo_offset, &page, encoder->private_->seek_callback, encoder->private_->read_callback, encoder->private_->client_data)) { + simple_ogg_page__clear(&page); + return; /* state already set */ + } + + /* + * Write MD5 signature + */ + { + const unsigned md5_offset = + FIRST_OGG_PACKET_STREAMINFO_PREFIX_LENGTH + + FLAC__STREAM_METADATA_HEADER_LENGTH + + ( + FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN + + FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN + + FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN + + FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN + + FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN + + FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN + + FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN + + FLAC__STREAM_METADATA_STREAMINFO_TOTAL_SAMPLES_LEN + ) / 8; + + if(md5_offset + 16 > (unsigned)page.body_len) { + encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR; + simple_ogg_page__clear(&page); + return; + } + memcpy(page.body + md5_offset, metadata->data.stream_info.md5sum, 16); + } + + /* + * Write total samples + */ + { + const unsigned total_samples_byte_offset = + FIRST_OGG_PACKET_STREAMINFO_PREFIX_LENGTH + + FLAC__STREAM_METADATA_HEADER_LENGTH + + ( + FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN + + FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN + + FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN + + FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN + + FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN + + FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN + + FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN + - 4 + ) / 8; + + if(total_samples_byte_offset + 5 > (unsigned)page.body_len) { + encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR; + simple_ogg_page__clear(&page); + return; + } + b[0] = (FLAC__byte)page.body[total_samples_byte_offset] & 0xF0; + b[0] |= (FLAC__byte)((samples >> 32) & 0x0F); + b[1] = (FLAC__byte)((samples >> 24) & 0xFF); + b[2] = (FLAC__byte)((samples >> 16) & 0xFF); + b[3] = (FLAC__byte)((samples >> 8) & 0xFF); + b[4] = (FLAC__byte)(samples & 0xFF); + memcpy(page.body + total_samples_byte_offset, b, 5); + } + + /* + * Write min/max framesize + */ + { + const unsigned min_framesize_offset = + FIRST_OGG_PACKET_STREAMINFO_PREFIX_LENGTH + + FLAC__STREAM_METADATA_HEADER_LENGTH + + ( + FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN + + FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN + ) / 8; + + if(min_framesize_offset + 6 > (unsigned)page.body_len) { + encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR; + simple_ogg_page__clear(&page); + return; + } + b[0] = (FLAC__byte)((min_framesize >> 16) & 0xFF); + b[1] = (FLAC__byte)((min_framesize >> 8) & 0xFF); + b[2] = (FLAC__byte)(min_framesize & 0xFF); + b[3] = (FLAC__byte)((max_framesize >> 16) & 0xFF); + b[4] = (FLAC__byte)((max_framesize >> 8) & 0xFF); + b[5] = (FLAC__byte)(max_framesize & 0xFF); + memcpy(page.body + min_framesize_offset, b, 6); + } + if(!simple_ogg_page__set_at(encoder, encoder->protected_->streaminfo_offset, &page, encoder->private_->seek_callback, encoder->private_->write_callback, encoder->private_->client_data)) { + simple_ogg_page__clear(&page); + return; /* state already set */ + } + simple_ogg_page__clear(&page); + + /* + * Write seektable + */ + if(0 != encoder->private_->seek_table && encoder->private_->seek_table->num_points > 0 && encoder->protected_->seektable_offset > 0) { + unsigned i; + FLAC__byte *p; + + FLAC__format_seektable_sort(encoder->private_->seek_table); + + FLAC__ASSERT(FLAC__format_seektable_is_legal(encoder->private_->seek_table)); + + simple_ogg_page__init(&page); + if(!simple_ogg_page__get_at(encoder, encoder->protected_->seektable_offset, &page, encoder->private_->seek_callback, encoder->private_->read_callback, encoder->private_->client_data)) { + simple_ogg_page__clear(&page); + return; /* state already set */ + } + + if((FLAC__STREAM_METADATA_HEADER_LENGTH + 18*encoder->private_->seek_table->num_points) != (unsigned)page.body_len) { + encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR; + simple_ogg_page__clear(&page); + return; + } + + for(i = 0, p = page.body + FLAC__STREAM_METADATA_HEADER_LENGTH; i < encoder->private_->seek_table->num_points; i++, p += 18) { + FLAC__uint64 xx; + unsigned x; + xx = encoder->private_->seek_table->points[i].sample_number; + b[7] = (FLAC__byte)xx; xx >>= 8; + b[6] = (FLAC__byte)xx; xx >>= 8; + b[5] = (FLAC__byte)xx; xx >>= 8; + b[4] = (FLAC__byte)xx; xx >>= 8; + b[3] = (FLAC__byte)xx; xx >>= 8; + b[2] = (FLAC__byte)xx; xx >>= 8; + b[1] = (FLAC__byte)xx; xx >>= 8; + b[0] = (FLAC__byte)xx; xx >>= 8; + xx = encoder->private_->seek_table->points[i].stream_offset; + b[15] = (FLAC__byte)xx; xx >>= 8; + b[14] = (FLAC__byte)xx; xx >>= 8; + b[13] = (FLAC__byte)xx; xx >>= 8; + b[12] = (FLAC__byte)xx; xx >>= 8; + b[11] = (FLAC__byte)xx; xx >>= 8; + b[10] = (FLAC__byte)xx; xx >>= 8; + b[9] = (FLAC__byte)xx; xx >>= 8; + b[8] = (FLAC__byte)xx; xx >>= 8; + x = encoder->private_->seek_table->points[i].frame_samples; + b[17] = (FLAC__byte)x; x >>= 8; + b[16] = (FLAC__byte)x; x >>= 8; + memcpy(p, b, 18); + } + + if(!simple_ogg_page__set_at(encoder, encoder->protected_->seektable_offset, &page, encoder->private_->seek_callback, encoder->private_->write_callback, encoder->private_->client_data)) { + simple_ogg_page__clear(&page); + return; /* state already set */ + } + simple_ogg_page__clear(&page); + } +} +#endif + +FLAC__bool process_frame_(FLAC__StreamEncoder *encoder, FLAC__bool is_fractional_block, FLAC__bool is_last_block) +{ + FLAC__uint16 crc; + FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK); + + /* + * Accumulate raw signal to the MD5 signature + */ + if(encoder->protected_->do_md5 && !FLAC__MD5Accumulate(&encoder->private_->md5context, (const FLAC__int32 * const *)encoder->private_->integer_signal, encoder->protected_->channels, encoder->protected_->blocksize, (encoder->protected_->bits_per_sample+7) / 8)) { + encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR; + return false; + } + + /* + * Process the frame header and subframes into the frame bitbuffer + */ + if(!process_subframes_(encoder, is_fractional_block)) { + /* the above function sets the state for us in case of an error */ + return false; + } + + /* + * Zero-pad the frame to a byte_boundary + */ + if(!FLAC__bitwriter_zero_pad_to_byte_boundary(encoder->private_->frame)) { + encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR; + return false; + } + + /* + * CRC-16 the whole thing + */ + FLAC__ASSERT(FLAC__bitwriter_is_byte_aligned(encoder->private_->frame)); + if( + !FLAC__bitwriter_get_write_crc16(encoder->private_->frame, &crc) || + !FLAC__bitwriter_write_raw_uint32(encoder->private_->frame, crc, FLAC__FRAME_FOOTER_CRC_LEN) + ) { + encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR; + return false; + } + + /* + * Write it + */ + if(!write_bitbuffer_(encoder, encoder->protected_->blocksize, is_last_block)) { + /* the above function sets the state for us in case of an error */ + return false; + } + + /* + * Get ready for the next frame + */ + encoder->private_->current_sample_number = 0; + encoder->private_->current_frame_number++; + encoder->private_->streaminfo.data.stream_info.total_samples += (FLAC__uint64)encoder->protected_->blocksize; + + return true; +} + +FLAC__bool process_subframes_(FLAC__StreamEncoder *encoder, FLAC__bool is_fractional_block) +{ + FLAC__FrameHeader frame_header; + unsigned channel, min_partition_order = encoder->protected_->min_residual_partition_order, max_partition_order; + FLAC__bool do_independent, do_mid_side; + + /* + * Calculate the min,max Rice partition orders + */ + if(is_fractional_block) { + max_partition_order = 0; + } + else { + max_partition_order = FLAC__format_get_max_rice_partition_order_from_blocksize(encoder->protected_->blocksize); + max_partition_order = flac_min(max_partition_order, encoder->protected_->max_residual_partition_order); + } + min_partition_order = flac_min(min_partition_order, max_partition_order); + + /* + * Setup the frame + */ + frame_header.blocksize = encoder->protected_->blocksize; + frame_header.sample_rate = encoder->protected_->sample_rate; + frame_header.channels = encoder->protected_->channels; + frame_header.channel_assignment = FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT; /* the default unless the encoder determines otherwise */ + frame_header.bits_per_sample = encoder->protected_->bits_per_sample; + frame_header.number_type = FLAC__FRAME_NUMBER_TYPE_FRAME_NUMBER; + frame_header.number.frame_number = encoder->private_->current_frame_number; + + /* + * Figure out what channel assignments to try + */ + if(encoder->protected_->do_mid_side_stereo) { + if(encoder->protected_->loose_mid_side_stereo) { + if(encoder->private_->loose_mid_side_stereo_frame_count == 0) { + do_independent = true; + do_mid_side = true; + } + else { + do_independent = (encoder->private_->last_channel_assignment == FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT); + do_mid_side = !do_independent; + } + } + else { + do_independent = true; + do_mid_side = true; + } + } + else { + do_independent = true; + do_mid_side = false; + } + + FLAC__ASSERT(do_independent || do_mid_side); + + /* + * Check for wasted bits; set effective bps for each subframe + */ + if(do_independent) { + for(channel = 0; channel < encoder->protected_->channels; channel++) { + unsigned w = get_wasted_bits_(encoder->private_->integer_signal[channel], encoder->protected_->blocksize); + if (w > encoder->protected_->bits_per_sample) { + w = encoder->protected_->bits_per_sample; + } + encoder->private_->subframe_workspace[channel][0].wasted_bits = encoder->private_->subframe_workspace[channel][1].wasted_bits = w; + encoder->private_->subframe_bps[channel] = encoder->protected_->bits_per_sample - w; + } + } + if(do_mid_side) { + FLAC__ASSERT(encoder->protected_->channels == 2); + for(channel = 0; channel < 2; channel++) { + unsigned w = get_wasted_bits_(encoder->private_->integer_signal_mid_side[channel], encoder->protected_->blocksize); + if (w > encoder->protected_->bits_per_sample) { + w = encoder->protected_->bits_per_sample; + } + encoder->private_->subframe_workspace_mid_side[channel][0].wasted_bits = encoder->private_->subframe_workspace_mid_side[channel][1].wasted_bits = w; + encoder->private_->subframe_bps_mid_side[channel] = encoder->protected_->bits_per_sample - w + (channel==0? 0:1); + } + } + + /* + * First do a normal encoding pass of each independent channel + */ + if(do_independent) { + for(channel = 0; channel < encoder->protected_->channels; channel++) { + if(! + process_subframe_( + encoder, + min_partition_order, + max_partition_order, + &frame_header, + encoder->private_->subframe_bps[channel], + encoder->private_->integer_signal[channel], + encoder->private_->subframe_workspace_ptr[channel], + encoder->private_->partitioned_rice_contents_workspace_ptr[channel], + encoder->private_->residual_workspace[channel], + encoder->private_->best_subframe+channel, + encoder->private_->best_subframe_bits+channel + ) + ) + return false; + } + } + + /* + * Now do mid and side channels if requested + */ + if(do_mid_side) { + FLAC__ASSERT(encoder->protected_->channels == 2); + + for(channel = 0; channel < 2; channel++) { + if(! + process_subframe_( + encoder, + min_partition_order, + max_partition_order, + &frame_header, + encoder->private_->subframe_bps_mid_side[channel], + encoder->private_->integer_signal_mid_side[channel], + encoder->private_->subframe_workspace_ptr_mid_side[channel], + encoder->private_->partitioned_rice_contents_workspace_ptr_mid_side[channel], + encoder->private_->residual_workspace_mid_side[channel], + encoder->private_->best_subframe_mid_side+channel, + encoder->private_->best_subframe_bits_mid_side+channel + ) + ) + return false; + } + } + + /* + * Compose the frame bitbuffer + */ + if(do_mid_side) { + unsigned left_bps = 0, right_bps = 0; /* initialized only to prevent superfluous compiler warning */ + FLAC__Subframe *left_subframe = 0, *right_subframe = 0; /* initialized only to prevent superfluous compiler warning */ + FLAC__ChannelAssignment channel_assignment; + + FLAC__ASSERT(encoder->protected_->channels == 2); + + if(encoder->protected_->loose_mid_side_stereo && encoder->private_->loose_mid_side_stereo_frame_count > 0) { + channel_assignment = (encoder->private_->last_channel_assignment == FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT? FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT : FLAC__CHANNEL_ASSIGNMENT_MID_SIDE); + } + else { + unsigned bits[4]; /* WATCHOUT - indexed by FLAC__ChannelAssignment */ + unsigned min_bits; + int ca; + + FLAC__ASSERT(FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT == 0); + FLAC__ASSERT(FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE == 1); + FLAC__ASSERT(FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE == 2); + FLAC__ASSERT(FLAC__CHANNEL_ASSIGNMENT_MID_SIDE == 3); + FLAC__ASSERT(do_independent && do_mid_side); + + /* We have to figure out which channel assignent results in the smallest frame */ + bits[FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT] = encoder->private_->best_subframe_bits [0] + encoder->private_->best_subframe_bits [1]; + bits[FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE ] = encoder->private_->best_subframe_bits [0] + encoder->private_->best_subframe_bits_mid_side[1]; + bits[FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE ] = encoder->private_->best_subframe_bits [1] + encoder->private_->best_subframe_bits_mid_side[1]; + bits[FLAC__CHANNEL_ASSIGNMENT_MID_SIDE ] = encoder->private_->best_subframe_bits_mid_side[0] + encoder->private_->best_subframe_bits_mid_side[1]; + + channel_assignment = FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT; + min_bits = bits[channel_assignment]; + for(ca = 1; ca <= 3; ca++) { + if(bits[ca] < min_bits) { + min_bits = bits[ca]; + channel_assignment = (FLAC__ChannelAssignment)ca; + } + } + } + + frame_header.channel_assignment = channel_assignment; + + if(!FLAC__frame_add_header(&frame_header, encoder->private_->frame)) { + encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR; + return false; + } + + switch(channel_assignment) { + case FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT: + left_subframe = &encoder->private_->subframe_workspace [0][encoder->private_->best_subframe [0]]; + right_subframe = &encoder->private_->subframe_workspace [1][encoder->private_->best_subframe [1]]; + break; + case FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE: + left_subframe = &encoder->private_->subframe_workspace [0][encoder->private_->best_subframe [0]]; + right_subframe = &encoder->private_->subframe_workspace_mid_side[1][encoder->private_->best_subframe_mid_side[1]]; + break; + case FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE: + left_subframe = &encoder->private_->subframe_workspace_mid_side[1][encoder->private_->best_subframe_mid_side[1]]; + right_subframe = &encoder->private_->subframe_workspace [1][encoder->private_->best_subframe [1]]; + break; + case FLAC__CHANNEL_ASSIGNMENT_MID_SIDE: + left_subframe = &encoder->private_->subframe_workspace_mid_side[0][encoder->private_->best_subframe_mid_side[0]]; + right_subframe = &encoder->private_->subframe_workspace_mid_side[1][encoder->private_->best_subframe_mid_side[1]]; + break; + default: + FLAC__ASSERT(0); + } + + switch(channel_assignment) { + case FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT: + left_bps = encoder->private_->subframe_bps [0]; + right_bps = encoder->private_->subframe_bps [1]; + break; + case FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE: + left_bps = encoder->private_->subframe_bps [0]; + right_bps = encoder->private_->subframe_bps_mid_side[1]; + break; + case FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE: + left_bps = encoder->private_->subframe_bps_mid_side[1]; + right_bps = encoder->private_->subframe_bps [1]; + break; + case FLAC__CHANNEL_ASSIGNMENT_MID_SIDE: + left_bps = encoder->private_->subframe_bps_mid_side[0]; + right_bps = encoder->private_->subframe_bps_mid_side[1]; + break; + default: + FLAC__ASSERT(0); + } + + /* note that encoder_add_subframe_ sets the state for us in case of an error */ + if(!add_subframe_(encoder, frame_header.blocksize, left_bps , left_subframe , encoder->private_->frame)) + return false; + if(!add_subframe_(encoder, frame_header.blocksize, right_bps, right_subframe, encoder->private_->frame)) + return false; + } + else { + if(!FLAC__frame_add_header(&frame_header, encoder->private_->frame)) { + encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR; + return false; + } + + for(channel = 0; channel < encoder->protected_->channels; channel++) { + if(!add_subframe_(encoder, frame_header.blocksize, encoder->private_->subframe_bps[channel], &encoder->private_->subframe_workspace[channel][encoder->private_->best_subframe[channel]], encoder->private_->frame)) { + /* the above function sets the state for us in case of an error */ + return false; + } + } + } + + if(encoder->protected_->loose_mid_side_stereo) { + encoder->private_->loose_mid_side_stereo_frame_count++; + if(encoder->private_->loose_mid_side_stereo_frame_count >= encoder->private_->loose_mid_side_stereo_frames) + encoder->private_->loose_mid_side_stereo_frame_count = 0; + } + + encoder->private_->last_channel_assignment = frame_header.channel_assignment; + + return true; +} + +FLAC__bool process_subframe_( + FLAC__StreamEncoder *encoder, + unsigned min_partition_order, + unsigned max_partition_order, + const FLAC__FrameHeader *frame_header, + unsigned subframe_bps, + const FLAC__int32 integer_signal[], + FLAC__Subframe *subframe[2], + FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents[2], + FLAC__int32 *residual[2], + unsigned *best_subframe, + unsigned *best_bits +) +{ +#ifndef FLAC__INTEGER_ONLY_LIBRARY + float fixed_residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]; +#else + FLAC__fixedpoint fixed_residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]; +#endif +#ifndef FLAC__INTEGER_ONLY_LIBRARY + double lpc_residual_bits_per_sample; + FLAC__real autoc[FLAC__MAX_LPC_ORDER+1]; /* WATCHOUT: the size is important even though encoder->protected_->max_lpc_order might be less; some asm and x86 intrinsic routines need all the space */ + double lpc_error[FLAC__MAX_LPC_ORDER]; + unsigned min_lpc_order, max_lpc_order, lpc_order; + unsigned min_qlp_coeff_precision, max_qlp_coeff_precision, qlp_coeff_precision; +#endif + unsigned min_fixed_order, max_fixed_order, guess_fixed_order, fixed_order; + unsigned rice_parameter; + unsigned _candidate_bits, _best_bits; + unsigned _best_subframe; + /* only use RICE2 partitions if stream bps > 16 */ + const unsigned rice_parameter_limit = FLAC__stream_encoder_get_bits_per_sample(encoder) > 16? FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_ESCAPE_PARAMETER : FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER; + + FLAC__ASSERT(frame_header->blocksize > 0); + + /* verbatim subframe is the baseline against which we measure other compressed subframes */ + _best_subframe = 0; + if(encoder->private_->disable_verbatim_subframes && frame_header->blocksize >= FLAC__MAX_FIXED_ORDER) + _best_bits = UINT_MAX; + else + _best_bits = evaluate_verbatim_subframe_(encoder, integer_signal, frame_header->blocksize, subframe_bps, subframe[_best_subframe]); + + if(frame_header->blocksize >= FLAC__MAX_FIXED_ORDER) { + unsigned signal_is_constant = false; + if(subframe_bps + 4 + FLAC__bitmath_ilog2((frame_header->blocksize-FLAC__MAX_FIXED_ORDER)|1) <= 32) + guess_fixed_order = encoder->private_->local_fixed_compute_best_predictor(integer_signal+FLAC__MAX_FIXED_ORDER, frame_header->blocksize-FLAC__MAX_FIXED_ORDER, fixed_residual_bits_per_sample); + else + guess_fixed_order = encoder->private_->local_fixed_compute_best_predictor_wide(integer_signal+FLAC__MAX_FIXED_ORDER, frame_header->blocksize-FLAC__MAX_FIXED_ORDER, fixed_residual_bits_per_sample); + /* check for constant subframe */ + if( + !encoder->private_->disable_constant_subframes && +#ifndef FLAC__INTEGER_ONLY_LIBRARY + fixed_residual_bits_per_sample[1] == 0.0 +#else + fixed_residual_bits_per_sample[1] == FLAC__FP_ZERO +#endif + ) { + /* the above means it's possible all samples are the same value; now double-check it: */ + unsigned i; + signal_is_constant = true; + for(i = 1; i < frame_header->blocksize; i++) { + if(integer_signal[0] != integer_signal[i]) { + signal_is_constant = false; + break; + } + } + } + if(signal_is_constant) { + _candidate_bits = evaluate_constant_subframe_(encoder, integer_signal[0], frame_header->blocksize, subframe_bps, subframe[!_best_subframe]); + if(_candidate_bits < _best_bits) { + _best_subframe = !_best_subframe; + _best_bits = _candidate_bits; + } + } + else { + if(!encoder->private_->disable_fixed_subframes || (encoder->protected_->max_lpc_order == 0 && _best_bits == UINT_MAX)) { + /* encode fixed */ + if(encoder->protected_->do_exhaustive_model_search) { + min_fixed_order = 0; + max_fixed_order = FLAC__MAX_FIXED_ORDER; + } + else { + min_fixed_order = max_fixed_order = guess_fixed_order; + } + if(max_fixed_order >= frame_header->blocksize) + max_fixed_order = frame_header->blocksize - 1; + for(fixed_order = min_fixed_order; fixed_order <= max_fixed_order; fixed_order++) { +#ifndef FLAC__INTEGER_ONLY_LIBRARY + if(fixed_residual_bits_per_sample[fixed_order] >= (float)subframe_bps) + continue; /* don't even try */ + rice_parameter = (fixed_residual_bits_per_sample[fixed_order] > 0.0)? (unsigned)(fixed_residual_bits_per_sample[fixed_order]+0.5) : 0; /* 0.5 is for rounding */ +#else + if(FLAC__fixedpoint_trunc(fixed_residual_bits_per_sample[fixed_order]) >= (int)subframe_bps) + continue; /* don't even try */ + rice_parameter = (fixed_residual_bits_per_sample[fixed_order] > FLAC__FP_ZERO)? (unsigned)FLAC__fixedpoint_trunc(fixed_residual_bits_per_sample[fixed_order]+FLAC__FP_ONE_HALF) : 0; /* 0.5 is for rounding */ +#endif + rice_parameter++; /* to account for the signed->unsigned conversion during rice coding */ + if(rice_parameter >= rice_parameter_limit) { +#ifdef DEBUG_VERBOSE + fprintf(stderr, "clipping rice_parameter (%u -> %u) @0\n", rice_parameter, rice_parameter_limit - 1); +#endif + rice_parameter = rice_parameter_limit - 1; + } + _candidate_bits = + evaluate_fixed_subframe_( + encoder, + integer_signal, + residual[!_best_subframe], + encoder->private_->abs_residual_partition_sums, + encoder->private_->raw_bits_per_partition, + frame_header->blocksize, + subframe_bps, + fixed_order, + rice_parameter, + rice_parameter_limit, + min_partition_order, + max_partition_order, + encoder->protected_->do_escape_coding, + encoder->protected_->rice_parameter_search_dist, + subframe[!_best_subframe], + partitioned_rice_contents[!_best_subframe] + ); + if(_candidate_bits < _best_bits) { + _best_subframe = !_best_subframe; + _best_bits = _candidate_bits; + } + } + } + +#ifndef FLAC__INTEGER_ONLY_LIBRARY + /* encode lpc */ + if(encoder->protected_->max_lpc_order > 0) { + if(encoder->protected_->max_lpc_order >= frame_header->blocksize) + max_lpc_order = frame_header->blocksize-1; + else + max_lpc_order = encoder->protected_->max_lpc_order; + if(max_lpc_order > 0) { + unsigned a; + for (a = 0; a < encoder->protected_->num_apodizations; a++) { + FLAC__lpc_window_data(integer_signal, encoder->private_->window[a], encoder->private_->windowed_signal, frame_header->blocksize); + encoder->private_->local_lpc_compute_autocorrelation(encoder->private_->windowed_signal, frame_header->blocksize, max_lpc_order+1, autoc); + /* if autoc[0] == 0.0, the signal is constant and we usually won't get here, but it can happen */ + if(autoc[0] != 0.0) { + FLAC__lpc_compute_lp_coefficients(autoc, &max_lpc_order, encoder->private_->lp_coeff, lpc_error); + if(encoder->protected_->do_exhaustive_model_search) { + min_lpc_order = 1; + } + else { + const unsigned guess_lpc_order = + FLAC__lpc_compute_best_order( + lpc_error, + max_lpc_order, + frame_header->blocksize, + subframe_bps + ( + encoder->protected_->do_qlp_coeff_prec_search? + FLAC__MIN_QLP_COEFF_PRECISION : /* have to guess; use the min possible size to avoid accidentally favoring lower orders */ + encoder->protected_->qlp_coeff_precision + ) + ); + min_lpc_order = max_lpc_order = guess_lpc_order; + } + if(max_lpc_order >= frame_header->blocksize) + max_lpc_order = frame_header->blocksize - 1; + for(lpc_order = min_lpc_order; lpc_order <= max_lpc_order; lpc_order++) { + lpc_residual_bits_per_sample = FLAC__lpc_compute_expected_bits_per_residual_sample(lpc_error[lpc_order-1], frame_header->blocksize-lpc_order); + if(lpc_residual_bits_per_sample >= (double)subframe_bps) + continue; /* don't even try */ + rice_parameter = (lpc_residual_bits_per_sample > 0.0)? (unsigned)(lpc_residual_bits_per_sample+0.5) : 0; /* 0.5 is for rounding */ + rice_parameter++; /* to account for the signed->unsigned conversion during rice coding */ + if(rice_parameter >= rice_parameter_limit) { +#ifdef DEBUG_VERBOSE + fprintf(stderr, "clipping rice_parameter (%u -> %u) @1\n", rice_parameter, rice_parameter_limit - 1); +#endif + rice_parameter = rice_parameter_limit - 1; + } + if(encoder->protected_->do_qlp_coeff_prec_search) { + min_qlp_coeff_precision = FLAC__MIN_QLP_COEFF_PRECISION; + /* try to keep qlp coeff precision such that only 32-bit math is required for decode of <=16bps(+1bps for side channel) streams */ + if(subframe_bps <= 17) { + max_qlp_coeff_precision = flac_min(32 - subframe_bps - FLAC__bitmath_ilog2(lpc_order), FLAC__MAX_QLP_COEFF_PRECISION); + max_qlp_coeff_precision = flac_max(max_qlp_coeff_precision, min_qlp_coeff_precision); + } + else + max_qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION; + } + else { + min_qlp_coeff_precision = max_qlp_coeff_precision = encoder->protected_->qlp_coeff_precision; + } + for(qlp_coeff_precision = min_qlp_coeff_precision; qlp_coeff_precision <= max_qlp_coeff_precision; qlp_coeff_precision++) { + _candidate_bits = + evaluate_lpc_subframe_( + encoder, + integer_signal, + residual[!_best_subframe], + encoder->private_->abs_residual_partition_sums, + encoder->private_->raw_bits_per_partition, + encoder->private_->lp_coeff[lpc_order-1], + frame_header->blocksize, + subframe_bps, + lpc_order, + qlp_coeff_precision, + rice_parameter, + rice_parameter_limit, + min_partition_order, + max_partition_order, + encoder->protected_->do_escape_coding, + encoder->protected_->rice_parameter_search_dist, + subframe[!_best_subframe], + partitioned_rice_contents[!_best_subframe] + ); + if(_candidate_bits > 0) { /* if == 0, there was a problem quantizing the lpcoeffs */ + if(_candidate_bits < _best_bits) { + _best_subframe = !_best_subframe; + _best_bits = _candidate_bits; + } + } + } + } + } + } + } + } +#endif /* !defined FLAC__INTEGER_ONLY_LIBRARY */ + } + } + + /* under rare circumstances this can happen when all but lpc subframe types are disabled: */ + if(_best_bits == UINT_MAX) { + FLAC__ASSERT(_best_subframe == 0); + _best_bits = evaluate_verbatim_subframe_(encoder, integer_signal, frame_header->blocksize, subframe_bps, subframe[_best_subframe]); + } + + *best_subframe = _best_subframe; + *best_bits = _best_bits; + + return true; +} + +FLAC__bool add_subframe_( + FLAC__StreamEncoder *encoder, + unsigned blocksize, + unsigned subframe_bps, + const FLAC__Subframe *subframe, + FLAC__BitWriter *frame +) +{ + switch(subframe->type) { + case FLAC__SUBFRAME_TYPE_CONSTANT: + if(!FLAC__subframe_add_constant(&(subframe->data.constant), subframe_bps, subframe->wasted_bits, frame)) { + encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR; + return false; + } + break; + case FLAC__SUBFRAME_TYPE_FIXED: + if(!FLAC__subframe_add_fixed(&(subframe->data.fixed), blocksize - subframe->data.fixed.order, subframe_bps, subframe->wasted_bits, frame)) { + encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR; + return false; + } + break; + case FLAC__SUBFRAME_TYPE_LPC: + if(!FLAC__subframe_add_lpc(&(subframe->data.lpc), blocksize - subframe->data.lpc.order, subframe_bps, subframe->wasted_bits, frame)) { + encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR; + return false; + } + break; + case FLAC__SUBFRAME_TYPE_VERBATIM: + if(!FLAC__subframe_add_verbatim(&(subframe->data.verbatim), blocksize, subframe_bps, subframe->wasted_bits, frame)) { + encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR; + return false; + } + break; + default: + FLAC__ASSERT(0); + } + + return true; +} + +#define SPOTCHECK_ESTIMATE 0 +#if SPOTCHECK_ESTIMATE +static void spotcheck_subframe_estimate_( + FLAC__StreamEncoder *encoder, + unsigned blocksize, + unsigned subframe_bps, + const FLAC__Subframe *subframe, + unsigned estimate +) +{ + FLAC__bool ret; + FLAC__BitWriter *frame = FLAC__bitwriter_new(); + if(frame == 0) { + fprintf(stderr, "EST: can't allocate frame\n"); + return; + } + if(!FLAC__bitwriter_init(frame)) { + fprintf(stderr, "EST: can't init frame\n"); + return; + } + ret = add_subframe_(encoder, blocksize, subframe_bps, subframe, frame); + FLAC__ASSERT(ret); + { + const unsigned actual = FLAC__bitwriter_get_input_bits_unconsumed(frame); + if(estimate != actual) + fprintf(stderr, "EST: bad, frame#%u sub#%%d type=%8s est=%u, actual=%u, delta=%d\n", encoder->private_->current_frame_number, FLAC__SubframeTypeString[subframe->type], estimate, actual, (int)actual-(int)estimate); + } + FLAC__bitwriter_delete(frame); +} +#endif + +unsigned evaluate_constant_subframe_( + FLAC__StreamEncoder *encoder, + const FLAC__int32 signal, + unsigned blocksize, + unsigned subframe_bps, + FLAC__Subframe *subframe +) +{ + unsigned estimate; + subframe->type = FLAC__SUBFRAME_TYPE_CONSTANT; + subframe->data.constant.value = signal; + + estimate = FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + subframe->wasted_bits + subframe_bps; + +#if SPOTCHECK_ESTIMATE + spotcheck_subframe_estimate_(encoder, blocksize, subframe_bps, subframe, estimate); +#else + (void)encoder, (void)blocksize; +#endif + + return estimate; +} + +unsigned evaluate_fixed_subframe_( + FLAC__StreamEncoder *encoder, + const FLAC__int32 signal[], + FLAC__int32 residual[], + FLAC__uint64 abs_residual_partition_sums[], + unsigned raw_bits_per_partition[], + unsigned blocksize, + unsigned subframe_bps, + unsigned order, + unsigned rice_parameter, + unsigned rice_parameter_limit, + unsigned min_partition_order, + unsigned max_partition_order, + FLAC__bool do_escape_coding, + unsigned rice_parameter_search_dist, + FLAC__Subframe *subframe, + FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents +) +{ + unsigned i, residual_bits, estimate; + const unsigned residual_samples = blocksize - order; + + FLAC__fixed_compute_residual(signal+order, residual_samples, order, residual); + + subframe->type = FLAC__SUBFRAME_TYPE_FIXED; + + subframe->data.fixed.entropy_coding_method.type = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE; + subframe->data.fixed.entropy_coding_method.data.partitioned_rice.contents = partitioned_rice_contents; + subframe->data.fixed.residual = residual; + + residual_bits = + find_best_partition_order_( + encoder->private_, + residual, + abs_residual_partition_sums, + raw_bits_per_partition, + residual_samples, + order, + rice_parameter, + rice_parameter_limit, + min_partition_order, + max_partition_order, + subframe_bps, + do_escape_coding, + rice_parameter_search_dist, + &subframe->data.fixed.entropy_coding_method + ); + + subframe->data.fixed.order = order; + for(i = 0; i < order; i++) + subframe->data.fixed.warmup[i] = signal[i]; + + estimate = FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + subframe->wasted_bits + (order * subframe_bps) + residual_bits; + +#if SPOTCHECK_ESTIMATE + spotcheck_subframe_estimate_(encoder, blocksize, subframe_bps, subframe, estimate); +#endif + + return estimate; +} + +#ifndef FLAC__INTEGER_ONLY_LIBRARY +unsigned evaluate_lpc_subframe_( + FLAC__StreamEncoder *encoder, + const FLAC__int32 signal[], + FLAC__int32 residual[], + FLAC__uint64 abs_residual_partition_sums[], + unsigned raw_bits_per_partition[], + const FLAC__real lp_coeff[], + unsigned blocksize, + unsigned subframe_bps, + unsigned order, + unsigned qlp_coeff_precision, + unsigned rice_parameter, + unsigned rice_parameter_limit, + unsigned min_partition_order, + unsigned max_partition_order, + FLAC__bool do_escape_coding, + unsigned rice_parameter_search_dist, + FLAC__Subframe *subframe, + FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents +) +{ + FLAC__int32 qlp_coeff[FLAC__MAX_LPC_ORDER]; /* WATCHOUT: the size is important; some x86 intrinsic routines need more than lpc order elements */ + unsigned i, residual_bits, estimate; + int quantization, ret; + const unsigned residual_samples = blocksize - order; + + /* try to keep qlp coeff precision such that only 32-bit math is required for decode of <=16bps(+1bps for side channel) streams */ + if(subframe_bps <= 17) { + FLAC__ASSERT(order > 0); + FLAC__ASSERT(order <= FLAC__MAX_LPC_ORDER); + qlp_coeff_precision = flac_min(qlp_coeff_precision, 32 - subframe_bps - FLAC__bitmath_ilog2(order)); + } + + ret = FLAC__lpc_quantize_coefficients(lp_coeff, order, qlp_coeff_precision, qlp_coeff, &quantization); + if(ret != 0) + return 0; /* this is a hack to indicate to the caller that we can't do lp at this order on this subframe */ + + if(subframe_bps + qlp_coeff_precision + FLAC__bitmath_ilog2(order) <= 32) + if(subframe_bps <= 16 && qlp_coeff_precision <= 16) + encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit(signal+order, residual_samples, qlp_coeff, order, quantization, residual); + else + encoder->private_->local_lpc_compute_residual_from_qlp_coefficients(signal+order, residual_samples, qlp_coeff, order, quantization, residual); + else + encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_64bit(signal+order, residual_samples, qlp_coeff, order, quantization, residual); + + subframe->type = FLAC__SUBFRAME_TYPE_LPC; + + subframe->data.lpc.entropy_coding_method.type = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE; + subframe->data.lpc.entropy_coding_method.data.partitioned_rice.contents = partitioned_rice_contents; + subframe->data.lpc.residual = residual; + + residual_bits = + find_best_partition_order_( + encoder->private_, + residual, + abs_residual_partition_sums, + raw_bits_per_partition, + residual_samples, + order, + rice_parameter, + rice_parameter_limit, + min_partition_order, + max_partition_order, + subframe_bps, + do_escape_coding, + rice_parameter_search_dist, + &subframe->data.lpc.entropy_coding_method + ); + + subframe->data.lpc.order = order; + subframe->data.lpc.qlp_coeff_precision = qlp_coeff_precision; + subframe->data.lpc.quantization_level = quantization; + memcpy(subframe->data.lpc.qlp_coeff, qlp_coeff, sizeof(FLAC__int32)*FLAC__MAX_LPC_ORDER); + for(i = 0; i < order; i++) + subframe->data.lpc.warmup[i] = signal[i]; + + estimate = FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + subframe->wasted_bits + FLAC__SUBFRAME_LPC_QLP_COEFF_PRECISION_LEN + FLAC__SUBFRAME_LPC_QLP_SHIFT_LEN + (order * (qlp_coeff_precision + subframe_bps)) + residual_bits; + +#if SPOTCHECK_ESTIMATE + spotcheck_subframe_estimate_(encoder, blocksize, subframe_bps, subframe, estimate); +#endif + + return estimate; +} +#endif + +unsigned evaluate_verbatim_subframe_( + FLAC__StreamEncoder *encoder, + const FLAC__int32 signal[], + unsigned blocksize, + unsigned subframe_bps, + FLAC__Subframe *subframe +) +{ + unsigned estimate; + + subframe->type = FLAC__SUBFRAME_TYPE_VERBATIM; + + subframe->data.verbatim.data = signal; + + estimate = FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + subframe->wasted_bits + (blocksize * subframe_bps); + +#if SPOTCHECK_ESTIMATE + spotcheck_subframe_estimate_(encoder, blocksize, subframe_bps, subframe, estimate); +#else + (void)encoder; +#endif + + return estimate; +} + +unsigned find_best_partition_order_( + FLAC__StreamEncoderPrivate *private_, + const FLAC__int32 residual[], + FLAC__uint64 abs_residual_partition_sums[], + unsigned raw_bits_per_partition[], + unsigned residual_samples, + unsigned predictor_order, + unsigned rice_parameter, + unsigned rice_parameter_limit, + unsigned min_partition_order, + unsigned max_partition_order, + unsigned bps, + FLAC__bool do_escape_coding, + unsigned rice_parameter_search_dist, + FLAC__EntropyCodingMethod *best_ecm +) +{ + unsigned residual_bits, best_residual_bits = 0; + unsigned best_parameters_index = 0; + unsigned best_partition_order = 0; + const unsigned blocksize = residual_samples + predictor_order; + + max_partition_order = FLAC__format_get_max_rice_partition_order_from_blocksize_limited_max_and_predictor_order(max_partition_order, blocksize, predictor_order); + min_partition_order = flac_min(min_partition_order, max_partition_order); + + private_->local_precompute_partition_info_sums(residual, abs_residual_partition_sums, residual_samples, predictor_order, min_partition_order, max_partition_order, bps); + + if(do_escape_coding) + precompute_partition_info_escapes_(residual, raw_bits_per_partition, residual_samples, predictor_order, min_partition_order, max_partition_order); + + { + int partition_order; + unsigned sum; + + for(partition_order = (int)max_partition_order, sum = 0; partition_order >= (int)min_partition_order; partition_order--) { + if(! + set_partitioned_rice_( +#ifdef EXACT_RICE_BITS_CALCULATION + residual, +#endif + abs_residual_partition_sums+sum, + raw_bits_per_partition+sum, + residual_samples, + predictor_order, + rice_parameter, + rice_parameter_limit, + rice_parameter_search_dist, + (unsigned)partition_order, + do_escape_coding, + &private_->partitioned_rice_contents_extra[!best_parameters_index], + &residual_bits + ) + ) + { + FLAC__ASSERT(best_residual_bits != 0); + break; + } + sum += 1u << partition_order; + if(best_residual_bits == 0 || residual_bits < best_residual_bits) { + best_residual_bits = residual_bits; + best_parameters_index = !best_parameters_index; + best_partition_order = partition_order; + } + } + } + + best_ecm->data.partitioned_rice.order = best_partition_order; + + { + /* + * We are allowed to de-const the pointer based on our special + * knowledge; it is const to the outside world. + */ + FLAC__EntropyCodingMethod_PartitionedRiceContents* prc = (FLAC__EntropyCodingMethod_PartitionedRiceContents*)best_ecm->data.partitioned_rice.contents; + unsigned partition; + + /* save best parameters and raw_bits */ + FLAC__format_entropy_coding_method_partitioned_rice_contents_ensure_size(prc, flac_max(6u, best_partition_order)); + memcpy(prc->parameters, private_->partitioned_rice_contents_extra[best_parameters_index].parameters, sizeof(unsigned)*(1<<(best_partition_order))); + if(do_escape_coding) + memcpy(prc->raw_bits, private_->partitioned_rice_contents_extra[best_parameters_index].raw_bits, sizeof(unsigned)*(1<<(best_partition_order))); + /* + * Now need to check if the type should be changed to + * FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2 based on the + * size of the rice parameters. + */ + for(partition = 0; partition < (1u<<best_partition_order); partition++) { + if(prc->parameters[partition] >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) { + best_ecm->type = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2; + break; + } + } + } + + return best_residual_bits; +} + +void precompute_partition_info_sums_( + const FLAC__int32 residual[], + FLAC__uint64 abs_residual_partition_sums[], + unsigned residual_samples, + unsigned predictor_order, + unsigned min_partition_order, + unsigned max_partition_order, + unsigned bps +) +{ + const unsigned default_partition_samples = (residual_samples + predictor_order) >> max_partition_order; + unsigned partitions = 1u << max_partition_order; + + FLAC__ASSERT(default_partition_samples > predictor_order); + + /* first do max_partition_order */ + { + const unsigned threshold = 32 - FLAC__bitmath_ilog2(default_partition_samples); + unsigned partition, residual_sample, end = (unsigned)(-(int)predictor_order); + /* WATCHOUT: "bps + FLAC__MAX_EXTRA_RESIDUAL_BPS" is the maximum assumed size of the average residual magnitude */ + if(bps + FLAC__MAX_EXTRA_RESIDUAL_BPS < threshold) { + for(partition = residual_sample = 0; partition < partitions; partition++) { + FLAC__uint32 abs_residual_partition_sum = 0; + end += default_partition_samples; + for( ; residual_sample < end; residual_sample++) + abs_residual_partition_sum += abs(residual[residual_sample]); /* abs(INT_MIN) is undefined, but if the residual is INT_MIN we have bigger problems */ + abs_residual_partition_sums[partition] = abs_residual_partition_sum; + } + } + else { /* have to pessimistically use 64 bits for accumulator */ + for(partition = residual_sample = 0; partition < partitions; partition++) { + FLAC__uint64 abs_residual_partition_sum64 = 0; + end += default_partition_samples; + for( ; residual_sample < end; residual_sample++) + abs_residual_partition_sum64 += abs(residual[residual_sample]); /* abs(INT_MIN) is undefined, but if the residual is INT_MIN we have bigger problems */ + abs_residual_partition_sums[partition] = abs_residual_partition_sum64; + } + } + } + + /* now merge partitions for lower orders */ + { + unsigned from_partition = 0, to_partition = partitions; + int partition_order; + for(partition_order = (int)max_partition_order - 1; partition_order >= (int)min_partition_order; partition_order--) { + unsigned i; + partitions >>= 1; + for(i = 0; i < partitions; i++) { + abs_residual_partition_sums[to_partition++] = + abs_residual_partition_sums[from_partition ] + + abs_residual_partition_sums[from_partition+1]; + from_partition += 2; + } + } + } +} + +void precompute_partition_info_escapes_( + const FLAC__int32 residual[], + unsigned raw_bits_per_partition[], + unsigned residual_samples, + unsigned predictor_order, + unsigned min_partition_order, + unsigned max_partition_order +) +{ + int partition_order; + unsigned from_partition, to_partition = 0; + const unsigned blocksize = residual_samples + predictor_order; + + /* first do max_partition_order */ + for(partition_order = (int)max_partition_order; partition_order >= 0; partition_order--) { + FLAC__int32 r; + FLAC__uint32 rmax; + unsigned partition, partition_sample, partition_samples, residual_sample; + const unsigned partitions = 1u << partition_order; + const unsigned default_partition_samples = blocksize >> partition_order; + + FLAC__ASSERT(default_partition_samples > predictor_order); + + for(partition = residual_sample = 0; partition < partitions; partition++) { + partition_samples = default_partition_samples; + if(partition == 0) + partition_samples -= predictor_order; + rmax = 0; + for(partition_sample = 0; partition_sample < partition_samples; partition_sample++) { + r = residual[residual_sample++]; + /* OPT: maybe faster: rmax |= r ^ (r>>31) */ + if(r < 0) + rmax |= ~r; + else + rmax |= r; + } + /* now we know all residual values are in the range [-rmax-1,rmax] */ + raw_bits_per_partition[partition] = rmax? FLAC__bitmath_ilog2(rmax) + 2 : 1; + } + to_partition = partitions; + break; /*@@@ yuck, should remove the 'for' loop instead */ + } + + /* now merge partitions for lower orders */ + for(from_partition = 0, --partition_order; partition_order >= (int)min_partition_order; partition_order--) { + unsigned m; + unsigned i; + const unsigned partitions = 1u << partition_order; + for(i = 0; i < partitions; i++) { + m = raw_bits_per_partition[from_partition]; + from_partition++; + raw_bits_per_partition[to_partition] = flac_max(m, raw_bits_per_partition[from_partition]); + from_partition++; + to_partition++; + } + } +} + +#ifdef EXACT_RICE_BITS_CALCULATION +static inline unsigned count_rice_bits_in_partition_( + const unsigned rice_parameter, + const unsigned partition_samples, + const FLAC__int32 *residual +) +{ + unsigned i, partition_bits = + FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN + /* actually could end up being FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_PARAMETER_LEN but err on side of 16bps */ + (1+rice_parameter) * partition_samples /* 1 for unary stop bit + rice_parameter for the binary portion */ + ; + for(i = 0; i < partition_samples; i++) + partition_bits += ( (FLAC__uint32)((residual[i]<<1)^(residual[i]>>31)) >> rice_parameter ); + return partition_bits; +} +#else +static inline unsigned count_rice_bits_in_partition_( + const unsigned rice_parameter, + const unsigned partition_samples, + const FLAC__uint64 abs_residual_partition_sum +) +{ + return + FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN + /* actually could end up being FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_PARAMETER_LEN but err on side of 16bps */ + (1+rice_parameter) * partition_samples + /* 1 for unary stop bit + rice_parameter for the binary portion */ + ( + rice_parameter? + (unsigned)(abs_residual_partition_sum >> (rice_parameter-1)) /* rice_parameter-1 because the real coder sign-folds instead of using a sign bit */ + : (unsigned)(abs_residual_partition_sum << 1) /* can't shift by negative number, so reverse */ + ) + - (partition_samples >> 1) + /* -(partition_samples>>1) to subtract out extra contributions to the abs_residual_partition_sum. + * The actual number of bits used is closer to the sum(for all i in the partition) of abs(residual[i])>>(rice_parameter-1) + * By using the abs_residual_partition sum, we also add in bits in the LSBs that would normally be shifted out. + * So the subtraction term tries to guess how many extra bits were contributed. + * If the LSBs are randomly distributed, this should average to 0.5 extra bits per sample. + */ + ; +} +#endif + +FLAC__bool set_partitioned_rice_( +#ifdef EXACT_RICE_BITS_CALCULATION + const FLAC__int32 residual[], +#endif + const FLAC__uint64 abs_residual_partition_sums[], + const unsigned raw_bits_per_partition[], + const unsigned residual_samples, + const unsigned predictor_order, + const unsigned suggested_rice_parameter, + const unsigned rice_parameter_limit, + const unsigned rice_parameter_search_dist, + const unsigned partition_order, + const FLAC__bool search_for_escapes, + FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents, + unsigned *bits +) +{ + unsigned rice_parameter, partition_bits; + unsigned best_partition_bits, best_rice_parameter = 0; + unsigned bits_ = FLAC__ENTROPY_CODING_METHOD_TYPE_LEN + FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN; + unsigned *parameters, *raw_bits; +#ifdef ENABLE_RICE_PARAMETER_SEARCH + unsigned min_rice_parameter, max_rice_parameter; +#else + (void)rice_parameter_search_dist; +#endif + + FLAC__ASSERT(suggested_rice_parameter < FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_ESCAPE_PARAMETER); + FLAC__ASSERT(rice_parameter_limit <= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_ESCAPE_PARAMETER); + + FLAC__format_entropy_coding_method_partitioned_rice_contents_ensure_size(partitioned_rice_contents, flac_max(6u, partition_order)); + parameters = partitioned_rice_contents->parameters; + raw_bits = partitioned_rice_contents->raw_bits; + + if(partition_order == 0) { + best_partition_bits = (unsigned)(-1); +#ifdef ENABLE_RICE_PARAMETER_SEARCH + if(rice_parameter_search_dist) { + if(suggested_rice_parameter < rice_parameter_search_dist) + min_rice_parameter = 0; + else + min_rice_parameter = suggested_rice_parameter - rice_parameter_search_dist; + max_rice_parameter = suggested_rice_parameter + rice_parameter_search_dist; + if(max_rice_parameter >= rice_parameter_limit) { +#ifdef DEBUG_VERBOSE + fprintf(stderr, "clipping rice_parameter (%u -> %u) @5\n", max_rice_parameter, rice_parameter_limit - 1); +#endif + max_rice_parameter = rice_parameter_limit - 1; + } + } + else + min_rice_parameter = max_rice_parameter = suggested_rice_parameter; + + for(rice_parameter = min_rice_parameter; rice_parameter <= max_rice_parameter; rice_parameter++) { +#else + rice_parameter = suggested_rice_parameter; +#endif +#ifdef EXACT_RICE_BITS_CALCULATION + partition_bits = count_rice_bits_in_partition_(rice_parameter, residual_samples, residual); +#else + partition_bits = count_rice_bits_in_partition_(rice_parameter, residual_samples, abs_residual_partition_sums[0]); +#endif + if(partition_bits < best_partition_bits) { + best_rice_parameter = rice_parameter; + best_partition_bits = partition_bits; + } +#ifdef ENABLE_RICE_PARAMETER_SEARCH + } +#endif + if(search_for_escapes) { + partition_bits = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_PARAMETER_LEN + FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_RAW_LEN + raw_bits_per_partition[0] * residual_samples; + if(partition_bits <= best_partition_bits) { + raw_bits[0] = raw_bits_per_partition[0]; + best_rice_parameter = 0; /* will be converted to appropriate escape parameter later */ + best_partition_bits = partition_bits; + } + else + raw_bits[0] = 0; + } + parameters[0] = best_rice_parameter; + bits_ += best_partition_bits; + } + else { + unsigned partition, residual_sample; + unsigned partition_samples; + FLAC__uint64 mean, k; + const unsigned partitions = 1u << partition_order; + for(partition = residual_sample = 0; partition < partitions; partition++) { + partition_samples = (residual_samples+predictor_order) >> partition_order; + if(partition == 0) { + if(partition_samples <= predictor_order) + return false; + else + partition_samples -= predictor_order; + } + mean = abs_residual_partition_sums[partition]; + /* we are basically calculating the size in bits of the + * average residual magnitude in the partition: + * rice_parameter = floor(log2(mean/partition_samples)) + * 'mean' is not a good name for the variable, it is + * actually the sum of magnitudes of all residual values + * in the partition, so the actual mean is + * mean/partition_samples + */ +#if 0 /* old simple code */ + for(rice_parameter = 0, k = partition_samples; k < mean; rice_parameter++, k <<= 1) + ; +#else +#if defined FLAC__CPU_X86_64 /* and other 64-bit arch, too */ + if(mean <= 0x80000000/512) { /* 512: more or less optimal for both 16- and 24-bit input */ +#else + if(mean <= 0x80000000/8) { /* 32-bit arch: use 32-bit math if possible */ +#endif + FLAC__uint32 k2, mean2 = (FLAC__uint32) mean; + rice_parameter = 0; k2 = partition_samples; + while(k2*8 < mean2) { /* requires: mean <= (2^31)/8 */ + rice_parameter += 4; k2 <<= 4; /* tuned for 16-bit input */ + } + while(k2 < mean2) { /* requires: mean <= 2^31 */ + rice_parameter++; k2 <<= 1; + } + } + else { + rice_parameter = 0; k = partition_samples; + if(mean <= FLAC__U64L(0x8000000000000000)/128) /* usually mean is _much_ smaller than this value */ + while(k*128 < mean) { /* requires: mean <= (2^63)/128 */ + rice_parameter += 8; k <<= 8; /* tuned for 24-bit input */ + } + while(k < mean) { /* requires: mean <= 2^63 */ + rice_parameter++; k <<= 1; + } + } +#endif + if(rice_parameter >= rice_parameter_limit) { +#ifdef DEBUG_VERBOSE + fprintf(stderr, "clipping rice_parameter (%u -> %u) @6\n", rice_parameter, rice_parameter_limit - 1); +#endif + rice_parameter = rice_parameter_limit - 1; + } + + best_partition_bits = (unsigned)(-1); +#ifdef ENABLE_RICE_PARAMETER_SEARCH + if(rice_parameter_search_dist) { + if(rice_parameter < rice_parameter_search_dist) + min_rice_parameter = 0; + else + min_rice_parameter = rice_parameter - rice_parameter_search_dist; + max_rice_parameter = rice_parameter + rice_parameter_search_dist; + if(max_rice_parameter >= rice_parameter_limit) { +#ifdef DEBUG_VERBOSE + fprintf(stderr, "clipping rice_parameter (%u -> %u) @7\n", max_rice_parameter, rice_parameter_limit - 1); +#endif + max_rice_parameter = rice_parameter_limit - 1; + } + } + else + min_rice_parameter = max_rice_parameter = rice_parameter; + + for(rice_parameter = min_rice_parameter; rice_parameter <= max_rice_parameter; rice_parameter++) { +#endif +#ifdef EXACT_RICE_BITS_CALCULATION + partition_bits = count_rice_bits_in_partition_(rice_parameter, partition_samples, residual+residual_sample); +#else + partition_bits = count_rice_bits_in_partition_(rice_parameter, partition_samples, abs_residual_partition_sums[partition]); +#endif + if(partition_bits < best_partition_bits) { + best_rice_parameter = rice_parameter; + best_partition_bits = partition_bits; + } +#ifdef ENABLE_RICE_PARAMETER_SEARCH + } +#endif + if(search_for_escapes) { + partition_bits = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_PARAMETER_LEN + FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_RAW_LEN + raw_bits_per_partition[partition] * partition_samples; + if(partition_bits <= best_partition_bits) { + raw_bits[partition] = raw_bits_per_partition[partition]; + best_rice_parameter = 0; /* will be converted to appropriate escape parameter later */ + best_partition_bits = partition_bits; + } + else + raw_bits[partition] = 0; + } + parameters[partition] = best_rice_parameter; + bits_ += best_partition_bits; + residual_sample += partition_samples; + } + } + + *bits = bits_; + return true; +} + +unsigned get_wasted_bits_(FLAC__int32 signal[], unsigned samples) +{ + unsigned i, shift; + FLAC__int32 x = 0; + + for(i = 0; i < samples && !(x&1); i++) + x |= signal[i]; + + if(x == 0) { + shift = 0; + } + else { + for(shift = 0; !(x&1); shift++) + x >>= 1; + } + + if(shift > 0) { + for(i = 0; i < samples; i++) + signal[i] >>= shift; + } + + return shift; +} + +void append_to_verify_fifo_(verify_input_fifo *fifo, const FLAC__int32 * const input[], unsigned input_offset, unsigned channels, unsigned wide_samples) +{ + unsigned channel; + + for(channel = 0; channel < channels; channel++) + memcpy(&fifo->data[channel][fifo->tail], &input[channel][input_offset], sizeof(FLAC__int32) * wide_samples); + + fifo->tail += wide_samples; + + FLAC__ASSERT(fifo->tail <= fifo->size); +} + +void append_to_verify_fifo_interleaved_(verify_input_fifo *fifo, const FLAC__int32 input[], unsigned input_offset, unsigned channels, unsigned wide_samples) +{ + unsigned channel; + unsigned sample, wide_sample; + unsigned tail = fifo->tail; + + sample = input_offset * channels; + for(wide_sample = 0; wide_sample < wide_samples; wide_sample++) { + for(channel = 0; channel < channels; channel++) + fifo->data[channel][tail] = input[sample++]; + tail++; + } + fifo->tail = tail; + + FLAC__ASSERT(fifo->tail <= fifo->size); +} + +FLAC__StreamDecoderReadStatus verify_read_callback_(const FLAC__StreamDecoder *decoder, FLAC__byte buffer[], size_t *bytes, void *client_data) +{ + FLAC__StreamEncoder *encoder = (FLAC__StreamEncoder*)client_data; + const size_t encoded_bytes = encoder->private_->verify.output.bytes; + (void)decoder; + + if(encoder->private_->verify.needs_magic_hack) { + FLAC__ASSERT(*bytes >= FLAC__STREAM_SYNC_LENGTH); + *bytes = FLAC__STREAM_SYNC_LENGTH; + memcpy(buffer, FLAC__STREAM_SYNC_STRING, *bytes); + encoder->private_->verify.needs_magic_hack = false; + } + else { + if(encoded_bytes == 0) { + /* + * If we get here, a FIFO underflow has occurred, + * which means there is a bug somewhere. + */ + FLAC__ASSERT(0); + return FLAC__STREAM_DECODER_READ_STATUS_ABORT; + } + else if(encoded_bytes < *bytes) + *bytes = encoded_bytes; + memcpy(buffer, encoder->private_->verify.output.data, *bytes); + encoder->private_->verify.output.data += *bytes; + encoder->private_->verify.output.bytes -= *bytes; + } + + return FLAC__STREAM_DECODER_READ_STATUS_CONTINUE; +} + +FLAC__StreamDecoderWriteStatus verify_write_callback_(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data) +{ + FLAC__StreamEncoder *encoder = (FLAC__StreamEncoder *)client_data; + unsigned channel; + const unsigned channels = frame->header.channels; + const unsigned blocksize = frame->header.blocksize; + const unsigned bytes_per_block = sizeof(FLAC__int32) * blocksize; + + (void)decoder; + + for(channel = 0; channel < channels; channel++) { + if(0 != memcmp(buffer[channel], encoder->private_->verify.input_fifo.data[channel], bytes_per_block)) { + unsigned i, sample = 0; + FLAC__int32 expect = 0, got = 0; + + for(i = 0; i < blocksize; i++) { + if(buffer[channel][i] != encoder->private_->verify.input_fifo.data[channel][i]) { + sample = i; + expect = (FLAC__int32)encoder->private_->verify.input_fifo.data[channel][i]; + got = (FLAC__int32)buffer[channel][i]; + break; + } + } + FLAC__ASSERT(i < blocksize); + FLAC__ASSERT(frame->header.number_type == FLAC__FRAME_NUMBER_TYPE_SAMPLE_NUMBER); + encoder->private_->verify.error_stats.absolute_sample = frame->header.number.sample_number + sample; + encoder->private_->verify.error_stats.frame_number = (unsigned)(frame->header.number.sample_number / blocksize); + encoder->private_->verify.error_stats.channel = channel; + encoder->private_->verify.error_stats.sample = sample; + encoder->private_->verify.error_stats.expected = expect; + encoder->private_->verify.error_stats.got = got; + encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA; + return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT; + } + } + /* dequeue the frame from the fifo */ + encoder->private_->verify.input_fifo.tail -= blocksize; + FLAC__ASSERT(encoder->private_->verify.input_fifo.tail <= OVERREAD_); + for(channel = 0; channel < channels; channel++) + memmove(&encoder->private_->verify.input_fifo.data[channel][0], &encoder->private_->verify.input_fifo.data[channel][blocksize], encoder->private_->verify.input_fifo.tail * sizeof(encoder->private_->verify.input_fifo.data[0][0])); + return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE; +} + +void verify_metadata_callback_(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data) +{ + (void)decoder, (void)metadata, (void)client_data; +} + +void verify_error_callback_(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data) +{ + FLAC__StreamEncoder *encoder = (FLAC__StreamEncoder*)client_data; + (void)decoder, (void)status; + encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR; +} + +FLAC__StreamEncoderReadStatus file_read_callback_(const FLAC__StreamEncoder *encoder, FLAC__byte buffer[], size_t *bytes, void *client_data) +{ + (void)client_data; + + *bytes = fread(buffer, 1, *bytes, encoder->private_->file); + if (*bytes == 0) { + if (feof(encoder->private_->file)) + return FLAC__STREAM_ENCODER_READ_STATUS_END_OF_STREAM; + else if (ferror(encoder->private_->file)) + return FLAC__STREAM_ENCODER_READ_STATUS_ABORT; + } + return FLAC__STREAM_ENCODER_READ_STATUS_CONTINUE; +} + +FLAC__StreamEncoderSeekStatus file_seek_callback_(const FLAC__StreamEncoder *encoder, FLAC__uint64 absolute_byte_offset, void *client_data) +{ + (void)client_data; + + if(fseeko(encoder->private_->file, (FLAC__off_t)absolute_byte_offset, SEEK_SET) < 0) + return FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR; + else + return FLAC__STREAM_ENCODER_SEEK_STATUS_OK; +} + +FLAC__StreamEncoderTellStatus file_tell_callback_(const FLAC__StreamEncoder *encoder, FLAC__uint64 *absolute_byte_offset, void *client_data) +{ + FLAC__off_t offset; + + (void)client_data; + + offset = ftello(encoder->private_->file); + + if(offset < 0) { + return FLAC__STREAM_ENCODER_TELL_STATUS_ERROR; + } + else { + *absolute_byte_offset = (FLAC__uint64)offset; + return FLAC__STREAM_ENCODER_TELL_STATUS_OK; + } +} + +#ifdef FLAC__VALGRIND_TESTING +static size_t local__fwrite(const void *ptr, size_t size, size_t nmemb, FILE *stream) +{ + size_t ret = fwrite(ptr, size, nmemb, stream); + if(!ferror(stream)) + fflush(stream); + return ret; +} +#else +#define local__fwrite fwrite +#endif + +FLAC__StreamEncoderWriteStatus file_write_callback_(const FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], size_t bytes, unsigned samples, unsigned current_frame, void *client_data) +{ + (void)client_data, (void)current_frame; + + if(local__fwrite(buffer, sizeof(FLAC__byte), bytes, encoder->private_->file) == bytes) { + FLAC__bool call_it = 0 != encoder->private_->progress_callback && ( +#if FLAC__HAS_OGG + /* We would like to be able to use 'samples > 0' in the + * clause here but currently because of the nature of our + * Ogg writing implementation, 'samples' is always 0 (see + * ogg_encoder_aspect.c). The downside is extra progress + * callbacks. + */ + encoder->private_->is_ogg? true : +#endif + samples > 0 + ); + if(call_it) { + /* NOTE: We have to add +bytes, +samples, and +1 to the stats + * because at this point in the callback chain, the stats + * have not been updated. Only after we return and control + * gets back to write_frame_() are the stats updated + */ + encoder->private_->progress_callback(encoder, encoder->private_->bytes_written+bytes, encoder->private_->samples_written+samples, encoder->private_->frames_written+(samples?1:0), encoder->private_->total_frames_estimate, encoder->private_->client_data); + } + return FLAC__STREAM_ENCODER_WRITE_STATUS_OK; + } + else + return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR; +} + +/* + * This will forcibly set stdout to binary mode (for OSes that require it) + */ +FILE *get_binary_stdout_(void) +{ + /* if something breaks here it is probably due to the presence or + * absence of an underscore before the identifiers 'setmode', + * 'fileno', and/or 'O_BINARY'; check your system header files. + */ +#if defined _MSC_VER || defined __MINGW32__ + _setmode(_fileno(stdout), _O_BINARY); +#elif defined __CYGWIN__ + /* almost certainly not needed for any modern Cygwin, but let's be safe... */ + setmode(_fileno(stdout), _O_BINARY); +#elif defined __EMX__ + setmode(fileno(stdout), O_BINARY); +#endif + + return stdout; +} |