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use intreadwrite functions in matroskadec

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based on a patch by Ronald S. Bultje   rsbultje gmail com

Originally committed as revision 9396 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Aurelien Jacobs 2007-06-23 12:32:19 +00:00
parent 6bca498d78
commit 2ce746c66a
1 changed files with 6 additions and 11 deletions
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17
libavformat/matroskadec.c
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@ -860,8 +860,7 @@ matroska_probe (AVProbeData *p)
uint8_t probe_data[] = { 'm', 'a', 't', 'r', 'o', 's', 'k', 'a' };
/* ebml header? */
if ((p->buf[0] << 24 | p->buf[1] << 16 |
p->buf[2] << 8 | p->buf[3]) != EBML_ID_HEADER)
if (AV_RB32(p->buf) != EBML_ID_HEADER)
return 0;
/* length of header */
@ -2044,13 +2043,11 @@ matroska_read_header (AVFormatContext *s,
MATROSKA_CODEC_ID_VIDEO_VFW_FOURCC) &&
(track->codec_priv_size >= 40) &&
(track->codec_priv != NULL)) {
unsigned char *p;
MatroskaVideoTrack *vtrack = (MatroskaVideoTrack *) track;
/* Offset of biCompression. Stored in LE. */
p = (unsigned char *)track->codec_priv + 16;
((MatroskaVideoTrack *)track)->fourcc = (p[3] << 24) |
(p[2] << 16) | (p[1] << 8) | p[0];
codec_id = codec_get_id(codec_bmp_tags, ((MatroskaVideoTrack *)track)->fourcc);
vtrack->fourcc = AV_RL32(track->codec_priv + 16);
codec_id = codec_get_id(codec_bmp_tags, vtrack->fourcc);
}
@ -2060,12 +2057,10 @@ matroska_read_header (AVFormatContext *s,
MATROSKA_CODEC_ID_AUDIO_ACM) &&
(track->codec_priv_size >= 18) &&
(track->codec_priv != NULL)) {
unsigned char *p;
uint16_t tag;
/* Offset of wFormatTag. Stored in LE. */
p = (unsigned char *)track->codec_priv;
tag = (p[1] << 8) | p[0];
tag = AV_RL16(track->codec_priv);
codec_id = codec_get_id(codec_wav_tags, tag);
}
@ -2274,7 +2269,7 @@ matroska_parse_block(MatroskaDemuxContext *matroska, uint8_t *data, int size,
duration = matroska->tracks[track]->default_duration;
/* block_time (relative to cluster time) */
block_time = (data[0] << 8) | data[1];
block_time = AV_RB16(data);
data += 2;
size -= 2;
flags = *data;