diff options
Diffstat (limited to 'deps/flac-1.3.2/src/libFLAC/ogg_encoder_aspect.c')
| -rw-r--r-- | deps/flac-1.3.2/src/libFLAC/ogg_encoder_aspect.c | 228 |
1 files changed, 0 insertions, 228 deletions
diff --git a/deps/flac-1.3.2/src/libFLAC/ogg_encoder_aspect.c b/deps/flac-1.3.2/src/libFLAC/ogg_encoder_aspect.c deleted file mode 100644 index ebd4614..0000000 --- a/deps/flac-1.3.2/src/libFLAC/ogg_encoder_aspect.c +++ /dev/null @@ -1,228 +0,0 @@ -/* libFLAC - Free Lossless Audio Codec - * Copyright (C) 2002-2009 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 <string.h> /* for memset() */ -#include "FLAC/assert.h" -#include "private/ogg_encoder_aspect.h" -#include "private/ogg_mapping.h" - -static const FLAC__byte FLAC__OGG_MAPPING_VERSION_MAJOR = 1; -static const FLAC__byte FLAC__OGG_MAPPING_VERSION_MINOR = 0; - -/*********************************************************************** - * - * Public class methods - * - ***********************************************************************/ - -FLAC__bool FLAC__ogg_encoder_aspect_init(FLAC__OggEncoderAspect *aspect) -{ - /* we will determine the serial number later if necessary */ - if(ogg_stream_init(&aspect->stream_state, aspect->serial_number) != 0) - return false; - - aspect->seen_magic = false; - aspect->is_first_packet = true; - aspect->samples_written = 0; - - return true; -} - -void FLAC__ogg_encoder_aspect_finish(FLAC__OggEncoderAspect *aspect) -{ - (void)ogg_stream_clear(&aspect->stream_state); - /*@@@ what about the page? */ -} - -void FLAC__ogg_encoder_aspect_set_serial_number(FLAC__OggEncoderAspect *aspect, long value) -{ - aspect->serial_number = value; -} - -FLAC__bool FLAC__ogg_encoder_aspect_set_num_metadata(FLAC__OggEncoderAspect *aspect, unsigned value) -{ - if(value < (1u << FLAC__OGG_MAPPING_NUM_HEADERS_LEN)) { - aspect->num_metadata = value; - return true; - } - else - return false; -} - -void FLAC__ogg_encoder_aspect_set_defaults(FLAC__OggEncoderAspect *aspect) -{ - aspect->serial_number = 0; - aspect->num_metadata = 0; -} - -/* - * The basic FLAC -> Ogg mapping goes like this: - * - * - 'fLaC' magic and STREAMINFO block get combined into the first - * packet. The packet is prefixed with - * + the one-byte packet type 0x7F - * + 'FLAC' magic - * + the 2 byte Ogg FLAC mapping version number - * + tne 2 byte big-endian # of header packets - * - The first packet is flushed to the first page. - * - Each subsequent metadata block goes into its own packet. - * - Each metadata packet is flushed to page (this is not required, - * the mapping only requires that a flush must occur after all - * metadata is written). - * - Each subsequent FLAC audio frame goes into its own packet. - * - * WATCHOUT: - * This depends on the behavior of FLAC__StreamEncoder that we get a - * separate write callback for the fLaC magic, and then separate write - * callbacks for each metadata block and audio frame. - */ -FLAC__StreamEncoderWriteStatus FLAC__ogg_encoder_aspect_write_callback_wrapper(FLAC__OggEncoderAspect *aspect, const FLAC__byte buffer[], size_t bytes, unsigned samples, unsigned current_frame, FLAC__bool is_last_block, FLAC__OggEncoderAspectWriteCallbackProxy write_callback, void *encoder, void *client_data) -{ - /* WATCHOUT: - * This depends on the behavior of FLAC__StreamEncoder that 'samples' - * will be 0 for metadata writes. - */ - const FLAC__bool is_metadata = (samples == 0); - - /* - * Treat fLaC magic packet specially. We will note when we see it, then - * wait until we get the STREAMINFO and prepend it in that packet - */ - if(aspect->seen_magic) { - ogg_packet packet; - FLAC__byte synthetic_first_packet_body[ - 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__STREAM_METADATA_HEADER_LENGTH + - FLAC__STREAM_METADATA_STREAMINFO_LENGTH - ]; - - memset(&packet, 0, sizeof(packet)); - packet.granulepos = aspect->samples_written + samples; - - if(aspect->is_first_packet) { - FLAC__byte *b = synthetic_first_packet_body; - if(bytes != FLAC__STREAM_METADATA_HEADER_LENGTH + FLAC__STREAM_METADATA_STREAMINFO_LENGTH) { - /* - * If we get here, our assumption about the way write callbacks happen - * (explained above) is wrong - */ - FLAC__ASSERT(0); - return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR; - } - /* add first header packet type */ - *b = FLAC__OGG_MAPPING_FIRST_HEADER_PACKET_TYPE; - b += FLAC__OGG_MAPPING_PACKET_TYPE_LENGTH; - /* add 'FLAC' mapping magic */ - memcpy(b, FLAC__OGG_MAPPING_MAGIC, FLAC__OGG_MAPPING_MAGIC_LENGTH); - b += FLAC__OGG_MAPPING_MAGIC_LENGTH; - /* add Ogg FLAC mapping major version number */ - memcpy(b, &FLAC__OGG_MAPPING_VERSION_MAJOR, FLAC__OGG_MAPPING_VERSION_MAJOR_LENGTH); - b += FLAC__OGG_MAPPING_VERSION_MAJOR_LENGTH; - /* add Ogg FLAC mapping minor version number */ - memcpy(b, &FLAC__OGG_MAPPING_VERSION_MINOR, FLAC__OGG_MAPPING_VERSION_MINOR_LENGTH); - b += FLAC__OGG_MAPPING_VERSION_MINOR_LENGTH; - /* add number of header packets */ - *b = (FLAC__byte)(aspect->num_metadata >> 8); - b++; - *b = (FLAC__byte)(aspect->num_metadata); - b++; - /* add native FLAC 'fLaC' magic */ - memcpy(b, FLAC__STREAM_SYNC_STRING, FLAC__STREAM_SYNC_LENGTH); - b += FLAC__STREAM_SYNC_LENGTH; - /* add STREAMINFO */ - memcpy(b, buffer, bytes); - FLAC__ASSERT(b + bytes - synthetic_first_packet_body == sizeof(synthetic_first_packet_body)); - packet.packet = (unsigned char *)synthetic_first_packet_body; - packet.bytes = sizeof(synthetic_first_packet_body); - - packet.b_o_s = 1; - aspect->is_first_packet = false; - } - else { - packet.packet = (unsigned char *)buffer; - packet.bytes = bytes; - } - - if(is_last_block) { - /* we used to check: - * FLAC__ASSERT(total_samples_estimate == 0 || total_samples_estimate == aspect->samples_written + samples); - * but it's really not useful since total_samples_estimate is an estimate and can be inexact - */ - packet.e_o_s = 1; - } - - if(ogg_stream_packetin(&aspect->stream_state, &packet) != 0) - return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR; - - /*@@@ can't figure out a way to pass a useful number for 'samples' to the write_callback, so we'll just pass 0 */ - if(is_metadata) { - while(ogg_stream_flush(&aspect->stream_state, &aspect->page) != 0) { - if(write_callback(encoder, aspect->page.header, aspect->page.header_len, 0, current_frame, client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) - return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR; - if(write_callback(encoder, aspect->page.body, aspect->page.body_len, 0, current_frame, client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) - return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR; - } - } - else { - while(ogg_stream_pageout(&aspect->stream_state, &aspect->page) != 0) { - if(write_callback(encoder, aspect->page.header, aspect->page.header_len, 0, current_frame, client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) - return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR; - if(write_callback(encoder, aspect->page.body, aspect->page.body_len, 0, current_frame, client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) - return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR; - } - } - } - else if(is_metadata && current_frame == 0 && samples == 0 && bytes == 4 && 0 == memcmp(buffer, FLAC__STREAM_SYNC_STRING, sizeof(FLAC__STREAM_SYNC_STRING))) { - aspect->seen_magic = true; - } - else { - /* - * If we get here, our assumption about the way write callbacks happen - * explained above is wrong - */ - FLAC__ASSERT(0); - return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR; - } - - aspect->samples_written += samples; - - return FLAC__STREAM_ENCODER_WRITE_STATUS_OK; -} |