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Code Issues Releases Activity

skip run-in sequence before reading header

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Originally committed as revision 5909 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Baptiste Coudurier 2006-08-03 12:08:06 +00:00
parent 49b6f16239
commit 61ca932e4a
1 changed files with 10 additions and 1 deletions
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11
libavformat/mxf.c
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@ -165,6 +165,8 @@ typedef struct MXFMetadataReadTableEntry {
static const uint8_t mxf_header_partition_pack_key[] = { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02 };
static const uint8_t mxf_essence_element_key[] = { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01 };
static offset_t mxf_header_offset = 0;
#define IS_KLV_KEY(x, y) (!memcmp(x, y, sizeof(y)))
#define PRINT_KEY(x) dprintf("%02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X\n", \
@ -873,6 +875,11 @@ static int mxf_read_header(AVFormatContext *s, AVFormatParameters *ap)
KLVPacket klv;
mxf->fc = s;
dprintf("header offset %llx\n", mxf_header_offset);
if (url_fseek(&s->pb, mxf_header_offset, SEEK_SET) < 0) {
av_log(s, AV_LOG_ERROR, "error seeking to header offset\n");
return -1;
}
while (!url_feof(&s->pb)) {
const MXFMetadataReadTableEntry *function;
@ -943,8 +950,10 @@ static int mxf_probe(AVProbeData *p) {
/* Must skip Run-In Sequence and search for MXF header partition pack key SMPTE 377M 5.5 */
end -= sizeof(mxf_header_partition_pack_key);
for (; bufp < end; bufp++) {
if (IS_KLV_KEY(bufp, mxf_header_partition_pack_key))
if (IS_KLV_KEY(bufp, mxf_header_partition_pack_key)) {
mxf_header_offset = bufp - p->buf;
return AVPROBE_SCORE_MAX;
}
}
return 0;
}