diff options
Diffstat (limited to 'deps/flac-1.3.2/src/libFLAC/ogg_helper.c')
| -rw-r--r-- | deps/flac-1.3.2/src/libFLAC/ogg_helper.c | 210 |
1 files changed, 0 insertions, 210 deletions
diff --git a/deps/flac-1.3.2/src/libFLAC/ogg_helper.c b/deps/flac-1.3.2/src/libFLAC/ogg_helper.c deleted file mode 100644 index 7ca9160..0000000 --- a/deps/flac-1.3.2/src/libFLAC/ogg_helper.c +++ /dev/null @@ -1,210 +0,0 @@ -/* libFLAC - Free Lossless Audio Codec - * Copyright (C) 2004-2009 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 <stdlib.h> /* for malloc() */ -#include <string.h> /* for memcmp(), memcpy() */ -#include "FLAC/assert.h" -#include "share/alloc.h" -#include "private/ogg_helper.h" -#include "protected/stream_encoder.h" - - -static FLAC__bool full_read_(FLAC__StreamEncoder *encoder, FLAC__byte *buffer, size_t bytes, FLAC__StreamEncoderReadCallback read_callback, void *client_data) -{ - while(bytes > 0) { - size_t bytes_read = bytes; - switch(read_callback(encoder, buffer, &bytes_read, client_data)) { - case FLAC__STREAM_ENCODER_READ_STATUS_CONTINUE: - bytes -= bytes_read; - buffer += bytes_read; - break; - case FLAC__STREAM_ENCODER_READ_STATUS_END_OF_STREAM: - if(bytes_read == 0) { - encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR; - return false; - } - bytes -= bytes_read; - buffer += bytes_read; - break; - case FLAC__STREAM_ENCODER_READ_STATUS_ABORT: - encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR; - return false; - case FLAC__STREAM_ENCODER_READ_STATUS_UNSUPPORTED: - return false; - default: - /* double protection: */ - FLAC__ASSERT(0); - encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR; - return false; - } - } - - return true; -} - -void simple_ogg_page__init(ogg_page *page) -{ - page->header = 0; - page->header_len = 0; - page->body = 0; - page->body_len = 0; -} - -void simple_ogg_page__clear(ogg_page *page) -{ - if(page->header) - free(page->header); - if(page->body) - free(page->body); - simple_ogg_page__init(page); -} - -FLAC__bool simple_ogg_page__get_at(FLAC__StreamEncoder *encoder, FLAC__uint64 position, ogg_page *page, FLAC__StreamEncoderSeekCallback seek_callback, FLAC__StreamEncoderReadCallback read_callback, void *client_data) -{ - static const unsigned OGG_HEADER_FIXED_PORTION_LEN = 27; - static const unsigned OGG_MAX_HEADER_LEN = 27/*OGG_HEADER_FIXED_PORTION_LEN*/ + 255; - FLAC__byte crc[4]; - FLAC__StreamEncoderSeekStatus seek_status; - - FLAC__ASSERT(page->header == 0); - FLAC__ASSERT(page->header_len == 0); - FLAC__ASSERT(page->body == 0); - FLAC__ASSERT(page->body_len == 0); - - /* move the stream pointer to the supposed beginning of the page */ - if(0 == seek_callback) - return false; - if((seek_status = seek_callback((FLAC__StreamEncoder*)encoder, position, 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 false; - } - - /* allocate space for the page header */ - if(0 == (page->header = safe_malloc_(OGG_MAX_HEADER_LEN))) { - encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR; - return false; - } - - /* read in the fixed part of the page header (up to but not including - * the segment table */ - if(!full_read_(encoder, page->header, OGG_HEADER_FIXED_PORTION_LEN, read_callback, client_data)) - return false; - - page->header_len = OGG_HEADER_FIXED_PORTION_LEN + page->header[26]; - - /* check to see if it's a correct, "simple" page (one packet only) */ - if( - memcmp(page->header, "OggS", 4) || /* doesn't start with OggS */ - (page->header[5] & 0x01) || /* continued packet */ - memcmp(page->header+6, "\0\0\0\0\0\0\0\0", 8) || /* granulepos is non-zero */ - page->header[26] == 0 /* packet is 0-size */ - ) { - encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR; - return false; - } - - /* read in the segment table */ - if(!full_read_(encoder, page->header + OGG_HEADER_FIXED_PORTION_LEN, page->header[26], read_callback, client_data)) - return false; - - { - unsigned i; - - /* check to see that it specifies a single packet */ - for(i = 0; i < (unsigned)page->header[26] - 1; i++) { - if(page->header[i + OGG_HEADER_FIXED_PORTION_LEN] != 255) { - encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR; - return false; - } - } - - page->body_len = 255 * i + page->header[i + OGG_HEADER_FIXED_PORTION_LEN]; - } - - /* allocate space for the page body */ - if(0 == (page->body = safe_malloc_(page->body_len))) { - encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR; - return false; - } - - /* read in the page body */ - if(!full_read_(encoder, page->body, page->body_len, read_callback, client_data)) - return false; - - /* check the CRC */ - memcpy(crc, page->header+22, 4); - ogg_page_checksum_set(page); - if(memcmp(crc, page->header+22, 4)) { - encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR; - return false; - } - - return true; -} - -FLAC__bool simple_ogg_page__set_at(FLAC__StreamEncoder *encoder, FLAC__uint64 position, ogg_page *page, FLAC__StreamEncoderSeekCallback seek_callback, FLAC__StreamEncoderWriteCallback write_callback, void *client_data) -{ - FLAC__StreamEncoderSeekStatus seek_status; - - FLAC__ASSERT(page->header != 0); - FLAC__ASSERT(page->header_len != 0); - FLAC__ASSERT(page->body != 0); - FLAC__ASSERT(page->body_len != 0); - - /* move the stream pointer to the supposed beginning of the page */ - if(0 == seek_callback) - return false; - if((seek_status = seek_callback((FLAC__StreamEncoder*)encoder, position, 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 false; - } - - ogg_page_checksum_set(page); - - /* re-write the page */ - if(write_callback((FLAC__StreamEncoder*)encoder, page->header, page->header_len, 0, 0, client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) { - encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR; - return false; - } - if(write_callback((FLAC__StreamEncoder*)encoder, page->body, page->body_len, 0, 0, client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) { - encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR; - return false; - } - - return true; -} |