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/*****************************************************************
* gmerlin-avdecoder - a general purpose multimedia decoding library
*
* Copyright (c) 2001 - 2012 Members of the Gmerlin project
* gmerlin-general@lists.sourceforge.net
* http://gmerlin.sourceforge.net
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
* *****************************************************************/
typedef struct
{
uint16_t min_blocksize;
uint16_t max_blocksize;
uint32_t min_framesize;
uint32_t max_framesize;
uint32_t samplerate;
int num_channels;
int bits_per_sample;
int64_t total_samples;
uint8_t md5[16];
} bgav_flac_streaminfo_t;
#define BGAV_FLAC_STREAMINFO_SIZE 34
int bgav_flac_streaminfo_read(const uint8_t * ptr, bgav_flac_streaminfo_t * ret);
void bgav_flac_streaminfo_dump(bgav_flac_streaminfo_t * si);
void bgav_flac_streaminfo_init_stream(bgav_flac_streaminfo_t * si, bgav_stream_t * s);
/* Frame header */
// Sync,Blocking blocksize,rate channel,sample pts crc
#define BGAV_FLAC_FRAMEHEADER_MIN (2+1+1+1+1)
// Sync,Blocking blocksize,rate channel,sample pts size rate crc
#define BGAV_FLAC_FRAMEHEADER_MAX (2+1+1+7+2+2+1)
typedef struct
{
int blocking_strategy_code;
int block_size_code;
int samplerate_code;
int channel_code;
int samplesize_code;
int64_t sample_number;
/* (partly) Computed values */
int samplerate;
int blocksize;
int samplesize;
int num_channels;
} bgav_flac_frame_header_t;
int bgav_flac_frame_header_read(const uint8_t * ptr,
int size,
bgav_flac_streaminfo_t * si,
bgav_flac_frame_header_t * ret);
int bgav_flac_frame_header_equal(bgav_flac_frame_header_t * h1,
bgav_flac_frame_header_t * h2);
int bgav_flac_check_crc(const uint8_t * ptr, int size);
/* Seek table */
typedef struct
{
int num_entries;
struct
{
uint64_t sample_number;
uint64_t offset;
uint16_t num_samples;
} * entries;
} bgav_flac_seektable_t;
int bgav_flac_seektable_read(bgav_input_context_t * input,
bgav_flac_seektable_t * ret,
int size);
void bgav_flac_seektable_dump(bgav_flac_seektable_t * t);
void bgav_flac_seektable_free(bgav_flac_seektable_t * t);
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