openharmony/third_party_ffmpeg
1
0
Fork 0
mirror of https://gitee.com/openharmony/third_party_ffmpeg synced 2024-11-26 20:50:34 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Add RF64 support to wav demuxer.

Browse Source 
Originally committed as revision 20181 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Daniel Verkamp 2009-10-06 17:50:10 +00:00
parent 7ae8fb8f8f
commit 811e0fc2e8
2 changed files with 25 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
Changelog
View File

@ -40,6 +40,7 @@ version <next>:
- Core Audio Format demuxer
- Atrac1 decoder
- MD STUDIO audio demuxer
- RF64 support in WAV demuxer

31
libavformat/wav.c
View File

@ -3,6 +3,7 @@
* Copyright (c) 2001, 2002 Fabrice Bellard
*
* Sony Wave64 demuxer
* RF64 demuxer
* Copyright (c) 2009 Daniel Verkamp
*
* This file is part of FFmpeg.
@ -160,17 +161,18 @@ static int wav_probe(AVProbeData *p)
/* check file header */
if (p->buf_size <= 32)
return 0;
if (p->buf[ 0] == 'R' && p->buf[ 1] == 'I' &&
p->buf[ 2] == 'F' && p->buf[ 3] == 'F' &&
p->buf[ 8] == 'W' && p->buf[ 9] == 'A' &&
p->buf[10] == 'V' && p->buf[11] == 'E')
if (!memcmp(p->buf + 8, "WAVE", 4)) {
if (!memcmp(p->buf, "RIFF", 4))
/*
Since ACT demuxer has standard WAV header at top of it's own,
returning score is decreased to avoid probe conflict
between ACT and WAV.
*/
return AVPROBE_SCORE_MAX - 1;
else
else if (!memcmp(p->buf, "RF64", 4) &&
!memcmp(p->buf + 12, "ds64", 4))
return AVPROBE_SCORE_MAX;
}
return 0;
}
@ -178,7 +180,8 @@ static int wav_probe(AVProbeData *p)
static int wav_read_header(AVFormatContext *s,
AVFormatParameters *ap)
{
int64_t size;
int64_t size, av_uninit(data_size);
int rf64;
unsigned int tag;
ByteIOContext *pb = s->pb;
AVStream *st;
@ -187,13 +190,25 @@ static int wav_read_header(AVFormatContext *s,
/* check RIFF header */
tag = get_le32(pb);
if (tag != MKTAG('R', 'I', 'F', 'F'))
rf64 = tag == MKTAG('R', 'F', '6', '4');
if (!rf64 && tag != MKTAG('R', 'I', 'F', 'F'))
return -1;
get_le32(pb); /* file size */
tag = get_le32(pb);
if (tag != MKTAG('W', 'A', 'V', 'E'))
return -1;
if (rf64) {
if (get_le32(pb) != MKTAG('d', 's', '6', '4'))
return -1;
size = get_le32(pb);
if (size < 16)
return -1;
get_le64(pb); /* RIFF size */
data_size = get_le64(pb);
url_fskip(pb, size - 16); /* skip rest of ds64 chunk */
}
/* parse fmt header */
size = find_tag(pb, MKTAG('f', 'm', 't', ' '));
if (size < 0)
@ -208,6 +223,8 @@ static int wav_read_header(AVFormatContext *s,
av_set_pts_info(st, 64, 1, st->codec->sample_rate);
size = find_tag(pb, MKTAG('d', 'a', 't', 'a'));
if (rf64)
size = data_size;
if (size < 0)
return -1;
wav->data_end= url_ftell(pb) + size;