* Copyright (c) 2008 Michael Niedermayer <michaelni@gmx.at>
* Copyright (c) 2009 Robert Swain ( rob opendot cl )
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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,
+ * Libav 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
+ * License along with Libav; 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;
buf = buf0;
- for(; buf < end; buf= buf2+1) {
+ for (; buf < end; buf = buf2 + 1) {
buf2 = buf;
- for(frames = 0; buf2 < end; frames++) {
+ for (frames = 0; buf2 < end; frames++) {
uint32_t header = AV_RB16(buf2);
- if((header&0xFFF6) != 0xFFF0)
+ if ((header & 0xFFF6) != 0xFFF0) {
+ if (buf != buf0) {
+ // Found something that isn't an ADTS header, starting
+ // from a position other than the start of the buffer.
+ // Discard the count we've accumulated so far since it
+ // probably was a false positive.
+ frames = 0;
+ }
break;
- fsize = (AV_RB32(buf2+3)>>13) & 0x8FFF;
- if(fsize < 7)
+ }
+ fsize = (AV_RB32(buf2 + 3) >> 13) & 0x1FFF;
+ if (fsize < 7)
break;
buf2 += fsize;
}
max_frames = FFMAX(max_frames, frames);
- if(buf == buf0)
- first_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;
+
+ if (first_frames >= 3)
+ return AVPROBE_SCORE_EXTENSION + 1;
+ else if (max_frames > 100)
+ return AVPROBE_SCORE_EXTENSION;
+ else if (max_frames >= 3)
+ return AVPROBE_SCORE_EXTENSION / 2;
+ else if (max_frames >= 1)
+ return 1;
+ else
+ return 0;
}
-static int adts_aac_read_header(AVFormatContext *s,
- AVFormatParameters *ap)
+static int adts_aac_read_header(AVFormatContext *s)
{
AVStream *st;
- st = av_new_stream(s, 0);
+ st = avformat_new_stream(s, NULL);
if (!st)
return AVERROR(ENOMEM);
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
- st->codec->codec_id = s->iformat->value;
- st->need_parsing = AVSTREAM_PARSE_FULL;
+ st->codec->codec_id = s->iformat->raw_codec_id;
+ st->need_parsing = AVSTREAM_PARSE_FULL;
ff_id3v1_read(s);
- //LCM of all possible ADTS sample rates
- av_set_pts_info(st, 64, 1, 28224000);
+ // LCM of all possible ADTS sample rates
+ avpriv_set_pts_info(st, 64, 1, 28224000);
return 0;
}
-AVInputFormat aac_demuxer = {
- "aac",
- NULL_IF_CONFIG_SMALL("raw ADTS AAC"),
- 0,
- adts_aac_probe,
- adts_aac_read_header,
- ff_raw_read_partial_packet,
- .flags= AVFMT_GENERIC_INDEX,
- .extensions = "aac",
- .value = CODEC_ID_AAC,
+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",
+ .mime_type = "audio/aac,audio/aacp,audio/x-aac",
+ .raw_codec_id = AV_CODEC_ID_AAC,
};