diff options
Diffstat (limited to 'ffmpeg1/libavcodec/flac.h')
| -rw-r--r-- | ffmpeg1/libavcodec/flac.h | 143 |
1 files changed, 0 insertions, 143 deletions
diff --git a/ffmpeg1/libavcodec/flac.h b/ffmpeg1/libavcodec/flac.h deleted file mode 100644 index 13e863b..0000000 --- a/ffmpeg1/libavcodec/flac.h +++ /dev/null @@ -1,143 +0,0 @@ -/* - * FLAC (Free Lossless Audio Codec) decoder/demuxer common functions - * Copyright (c) 2008 Justin Ruggles - * - * This file is part of FFmpeg. - * - * FFmpeg is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - * - * FFmpeg 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 - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with FFmpeg; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ - -/** - * @file - * FLAC (Free Lossless Audio Codec) decoder/demuxer common functions - */ - -#ifndef AVCODEC_FLAC_H -#define AVCODEC_FLAC_H - -#include "avcodec.h" -#include "get_bits.h" - -#define FLAC_STREAMINFO_SIZE 34 -#define FLAC_MAX_CHANNELS 8 -#define FLAC_MIN_BLOCKSIZE 16 -#define FLAC_MAX_BLOCKSIZE 65535 -#define FLAC_MIN_FRAME_SIZE 11 - -enum { - FLAC_CHMODE_INDEPENDENT = 0, - FLAC_CHMODE_LEFT_SIDE = 1, - FLAC_CHMODE_RIGHT_SIDE = 2, - FLAC_CHMODE_MID_SIDE = 3, -}; - -enum { - FLAC_METADATA_TYPE_STREAMINFO = 0, - FLAC_METADATA_TYPE_PADDING, - FLAC_METADATA_TYPE_APPLICATION, - FLAC_METADATA_TYPE_SEEKTABLE, - FLAC_METADATA_TYPE_VORBIS_COMMENT, - FLAC_METADATA_TYPE_CUESHEET, - FLAC_METADATA_TYPE_PICTURE, - FLAC_METADATA_TYPE_INVALID = 127 -}; - -enum FLACExtradataFormat { - FLAC_EXTRADATA_FORMAT_STREAMINFO = 0, - FLAC_EXTRADATA_FORMAT_FULL_HEADER = 1 -}; - -#define FLACCOMMONINFO \ - int samplerate; /**< sample rate */\ - int channels; /**< number of channels */\ - int bps; /**< bits-per-sample */\ - -/** - * Data needed from the Streaminfo header for use by the raw FLAC demuxer - * and/or the FLAC decoder. - */ -#define FLACSTREAMINFO \ - FLACCOMMONINFO \ - int max_blocksize; /**< maximum block size, in samples */\ - int max_framesize; /**< maximum frame size, in bytes */\ - int64_t samples; /**< total number of samples */\ - -typedef struct FLACStreaminfo { - FLACSTREAMINFO -} FLACStreaminfo; - -typedef struct FLACFrameInfo { - FLACCOMMONINFO - int blocksize; /**< block size of the frame */ - int ch_mode; /**< channel decorrelation mode */ - int64_t frame_or_sample_num; /**< frame number or sample number */ - int is_var_size; /**< specifies if the stream uses variable - block sizes or a fixed block size; - also determines the meaning of - frame_or_sample_num */ -} FLACFrameInfo; - -/** - * Parse the Streaminfo metadata block - * @param[out] avctx codec context to set basic stream parameters - * @param[out] s where parsed information is stored - * @param[in] buffer pointer to start of 34-byte streaminfo data - */ -void avpriv_flac_parse_streaminfo(AVCodecContext *avctx, struct FLACStreaminfo *s, - const uint8_t *buffer); - -/** - * Validate the FLAC extradata. - * @param[in] avctx codec context containing the extradata. - * @param[out] format extradata format. - * @param[out] streaminfo_start pointer to start of 34-byte STREAMINFO data. - * @return 1 if valid, 0 if not valid. - */ -int avpriv_flac_is_extradata_valid(AVCodecContext *avctx, - enum FLACExtradataFormat *format, - uint8_t **streaminfo_start); - -/** - * Parse the metadata block parameters from the header. - * @param[in] block_header header data, at least 4 bytes - * @param[out] last indicator for last metadata block - * @param[out] type metadata block type - * @param[out] size metadata block size - */ -void avpriv_flac_parse_block_header(const uint8_t *block_header, - int *last, int *type, int *size); - -/** - * Calculate an estimate for the maximum frame size based on verbatim mode. - * @param blocksize block size, in samples - * @param ch number of channels - * @param bps bits-per-sample - */ -int ff_flac_get_max_frame_size(int blocksize, int ch, int bps); - -/** - * Validate and decode a frame header. - * @param avctx AVCodecContext to use as av_log() context - * @param gb GetBitContext from which to read frame header - * @param[out] fi frame information - * @param log_level_offset log level offset. can be used to silence error messages. - * @return non-zero on error, 0 if ok - */ -int ff_flac_decode_frame_header(AVCodecContext *avctx, GetBitContext *gb, - FLACFrameInfo *fi, int log_level_offset); - -void ff_flac_set_channel_layout(AVCodecContext *avctx); - -#endif /* AVCODEC_FLAC_H */ |