diff options
Diffstat (limited to 'ffmpeg/libavcodec/aac_ac3_parser.c')
| -rw-r--r-- | ffmpeg/libavcodec/aac_ac3_parser.c | 114 |
1 files changed, 0 insertions, 114 deletions
diff --git a/ffmpeg/libavcodec/aac_ac3_parser.c b/ffmpeg/libavcodec/aac_ac3_parser.c deleted file mode 100644 index 7fefda5..0000000 --- a/ffmpeg/libavcodec/aac_ac3_parser.c +++ /dev/null @@ -1,114 +0,0 @@ -/* - * Common AAC and AC-3 parser - * 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 "libavutil/channel_layout.h" -#include "libavutil/common.h" -#include "parser.h" -#include "aac_ac3_parser.h" - -int ff_aac_ac3_parse(AVCodecParserContext *s1, - AVCodecContext *avctx, - const uint8_t **poutbuf, int *poutbuf_size, - const uint8_t *buf, int buf_size) -{ - AACAC3ParseContext *s = s1->priv_data; - ParseContext *pc = &s->pc; - int len, i; - int new_frame_start; - -get_next: - i=END_NOT_FOUND; - if(s->remaining_size <= buf_size){ - if(s->remaining_size && !s->need_next_header){ - i= s->remaining_size; - s->remaining_size = 0; - }else{ //we need a header first - len=0; - for(i=s->remaining_size; i<buf_size; i++){ - s->state = (s->state<<8) + buf[i]; - if((len=s->sync(s->state, s, &s->need_next_header, &new_frame_start))) - break; - } - if(len<=0){ - i=END_NOT_FOUND; - }else{ - s->state=0; - i-= s->header_size -1; - s->remaining_size = len; - if(!new_frame_start || pc->index+i<=0){ - s->remaining_size += i; - goto get_next; - } - } - } - } - - if(ff_combine_frame(pc, i, &buf, &buf_size)<0){ - s->remaining_size -= FFMIN(s->remaining_size, buf_size); - *poutbuf = NULL; - *poutbuf_size = 0; - return buf_size; - } - - *poutbuf = buf; - *poutbuf_size = buf_size; - - /* update codec info */ - if(s->codec_id) - avctx->codec_id = s->codec_id; - - /* Due to backwards compatible HE-AAC the sample rate, channel count, - and total number of samples found in an AAC ADTS header are not - reliable. Bit rate is still accurate because the total frame duration in - seconds is still correct (as is the number of bits in the frame). */ - if (avctx->codec_id != AV_CODEC_ID_AAC) { - avctx->sample_rate = s->sample_rate; - - /* (E-)AC-3: allow downmixing to stereo or mono */ -#if FF_API_REQUEST_CHANNELS -FF_DISABLE_DEPRECATION_WARNINGS - if (avctx->request_channels == 1) - avctx->request_channel_layout = AV_CH_LAYOUT_MONO; - else if (avctx->request_channels == 2) - avctx->request_channel_layout = AV_CH_LAYOUT_STEREO; -FF_ENABLE_DEPRECATION_WARNINGS -#endif - if (s->channels > 1 && - avctx->request_channel_layout == AV_CH_LAYOUT_MONO) { - avctx->channels = 1; - avctx->channel_layout = AV_CH_LAYOUT_MONO; - } else if (s->channels > 2 && - avctx->request_channel_layout == AV_CH_LAYOUT_STEREO) { - avctx->channels = 2; - avctx->channel_layout = AV_CH_LAYOUT_STEREO; - } else { - avctx->channels = s->channels; - avctx->channel_layout = s->channel_layout; - } - s1->duration = s->samples; - avctx->audio_service_type = s->service_type; - } - - avctx->bit_rate = s->bit_rate; - - return i; -} |