diff options
Diffstat (limited to 'ffmpeg1/libavformat/aacdec.c')
| -rw-r--r-- | ffmpeg1/libavformat/aacdec.c | 94 |
1 files changed, 0 insertions, 94 deletions
diff --git a/ffmpeg1/libavformat/aacdec.c b/ffmpeg1/libavformat/aacdec.c deleted file mode 100644 index 7c17dd0..0000000 --- a/ffmpeg1/libavformat/aacdec.c +++ /dev/null @@ -1,94 +0,0 @@ -/* - * raw ADTS AAC demuxer - * Copyright (c) 2008 Michael Niedermayer <michaelni@gmx.at> - * Copyright (c) 2009 Robert Swain ( rob opendot cl ) - * - * 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/intreadwrite.h" -#include "avformat.h" -#include "internal.h" -#include "rawdec.h" -#include "id3v1.h" - - -static int adts_aac_probe(AVProbeData *p) -{ - int max_frames = 0, first_frames = 0; - int fsize, frames; - const uint8_t *buf0 = p->buf; - const uint8_t *buf2; - const uint8_t *buf; - const uint8_t *end = buf0 + p->buf_size - 7; - - buf = buf0; - - for(; buf < end; buf= buf2+1) { - buf2 = buf; - - for(frames = 0; buf2 < end; frames++) { - uint32_t header = AV_RB16(buf2); - if((header&0xFFF6) != 0xFFF0) - break; - fsize = (AV_RB32(buf2 + 3) >> 13) & 0x1FFF; - if(fsize < 7) - break; - fsize = FFMIN(fsize, end - buf2); - buf2 += fsize; - } - max_frames = FFMAX(max_frames, frames); - if(buf == buf0) - first_frames= frames; - } - if (first_frames>=3) return AVPROBE_SCORE_MAX/2+1; - else if(max_frames>500)return AVPROBE_SCORE_MAX/2; - else if(max_frames>=3) return AVPROBE_SCORE_MAX/4; - else if(max_frames>=1) return 1; - else return 0; -} - -static int adts_aac_read_header(AVFormatContext *s) -{ - AVStream *st; - - st = avformat_new_stream(s, NULL); - if (!st) - return AVERROR(ENOMEM); - - st->codec->codec_type = AVMEDIA_TYPE_AUDIO; - st->codec->codec_id = s->iformat->raw_codec_id; - st->need_parsing = AVSTREAM_PARSE_FULL_RAW; - - ff_id3v1_read(s); - - //LCM of all possible ADTS sample rates - avpriv_set_pts_info(st, 64, 1, 28224000); - - return 0; -} - -AVInputFormat ff_aac_demuxer = { - .name = "aac", - .long_name = NULL_IF_CONFIG_SMALL("raw ADTS AAC (Advanced Audio Coding)"), - .read_probe = adts_aac_probe, - .read_header = adts_aac_read_header, - .read_packet = ff_raw_read_partial_packet, - .flags = AVFMT_GENERIC_INDEX, - .extensions = "aac", - .raw_codec_id = AV_CODEC_ID_AAC, -}; |