mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-21 10:55:51 +02:00
29d147c94d
* commit '059a934806d61f7af9ab3fd9f74994b838ea5eba': lavc: Consistently prefix input buffer defines Conflicts: doc/examples/decoding_encoding.c libavcodec/4xm.c libavcodec/aac_adtstoasc_bsf.c libavcodec/aacdec.c libavcodec/aacenc.c libavcodec/ac3dec.h libavcodec/asvenc.c libavcodec/avcodec.h libavcodec/avpacket.c libavcodec/dvdec.c libavcodec/ffv1enc.c libavcodec/g2meet.c libavcodec/gif.c libavcodec/h264.c libavcodec/h264_mp4toannexb_bsf.c libavcodec/huffyuvdec.c libavcodec/huffyuvenc.c libavcodec/jpeglsenc.c libavcodec/libxvid.c libavcodec/mdec.c libavcodec/motionpixels.c libavcodec/mpeg4videodec.c libavcodec/mpegvideo.c libavcodec/noise_bsf.c libavcodec/nuv.c libavcodec/nvenc.c libavcodec/options.c libavcodec/parser.c libavcodec/pngenc.c libavcodec/proresenc_kostya.c libavcodec/qsvdec.c libavcodec/svq1enc.c libavcodec/tiffenc.c libavcodec/truemotion2.c libavcodec/utils.c libavcodec/utvideoenc.c libavcodec/vc1dec.c libavcodec/wmalosslessdec.c libavformat/adxdec.c libavformat/aiffdec.c libavformat/apc.c libavformat/apetag.c libavformat/avidec.c libavformat/bink.c libavformat/cafdec.c libavformat/flvdec.c libavformat/id3v2.c libavformat/isom.c libavformat/matroskadec.c libavformat/mov.c libavformat/mpc.c libavformat/mpc8.c libavformat/mpegts.c libavformat/mvi.c libavformat/mxfdec.c libavformat/mxg.c libavformat/nutdec.c libavformat/oggdec.c libavformat/oggparsecelt.c libavformat/oggparseflac.c libavformat/oggparseopus.c libavformat/oggparsespeex.c libavformat/omadec.c libavformat/rawdec.c libavformat/riffdec.c libavformat/rl2.c libavformat/rmdec.c libavformat/rtpdec_latm.c libavformat/rtpdec_mpeg4.c libavformat/rtpdec_qdm2.c libavformat/rtpdec_svq3.c libavformat/sierravmd.c libavformat/smacker.c libavformat/smush.c libavformat/spdifenc.c libavformat/takdec.c libavformat/tta.c libavformat/utils.c libavformat/vqf.c libavformat/westwood_vqa.c libavformat/xmv.c libavformat/xwma.c libavformat/yop.c Merged-by: Michael Niedermayer <michael@niedermayer.cc>
70 lines
2.1 KiB
C
70 lines
2.1 KiB
C
/*
|
|
* Audio and Video frame extraction
|
|
* Copyright (c) 2003 Fabrice Bellard
|
|
* Copyright (c) 2003 Michael Niedermayer
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
#include "parser.h"
|
|
#include "aac_ac3_parser.h"
|
|
#include "aacadtsdec.h"
|
|
#include "get_bits.h"
|
|
#include "mpeg4audio.h"
|
|
|
|
static int aac_sync(uint64_t state, AACAC3ParseContext *hdr_info,
|
|
int *need_next_header, int *new_frame_start)
|
|
{
|
|
GetBitContext bits;
|
|
AACADTSHeaderInfo hdr;
|
|
int size;
|
|
union {
|
|
uint64_t u64;
|
|
uint8_t u8[8 + AV_INPUT_BUFFER_PADDING_SIZE];
|
|
} tmp;
|
|
|
|
tmp.u64 = av_be2ne64(state);
|
|
init_get_bits(&bits, tmp.u8+8-AAC_ADTS_HEADER_SIZE, AAC_ADTS_HEADER_SIZE * 8);
|
|
|
|
if ((size = avpriv_aac_parse_header(&bits, &hdr)) < 0)
|
|
return 0;
|
|
*need_next_header = 0;
|
|
*new_frame_start = 1;
|
|
hdr_info->sample_rate = hdr.sample_rate;
|
|
hdr_info->channels = ff_mpeg4audio_channels[hdr.chan_config];
|
|
hdr_info->samples = hdr.samples;
|
|
hdr_info->bit_rate = hdr.bit_rate;
|
|
return size;
|
|
}
|
|
|
|
static av_cold int aac_parse_init(AVCodecParserContext *s1)
|
|
{
|
|
AACAC3ParseContext *s = s1->priv_data;
|
|
s->header_size = AAC_ADTS_HEADER_SIZE;
|
|
s->sync = aac_sync;
|
|
return 0;
|
|
}
|
|
|
|
|
|
AVCodecParser ff_aac_parser = {
|
|
.codec_ids = { AV_CODEC_ID_AAC },
|
|
.priv_data_size = sizeof(AACAC3ParseContext),
|
|
.parser_init = aac_parse_init,
|
|
.parser_parse = ff_aac_ac3_parse,
|
|
.parser_close = ff_parse_close,
|
|
};
|