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mxfdec: Add hack that adjusts the n_delta calculation when system items are present.

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Signed-off-by: Janne Grunau <janne-libav@jannau.net>
This commit is contained in:
Tomas Härdin 2011-11-11 15:01:34 +01:00 committed by Janne Grunau
parent 682b6db706
commit edb5085647
1 changed files with 8 additions and 1 deletions
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9
libavformat/mxfdec.c
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@ -181,6 +181,7 @@ typedef struct {
uint8_t *local_tags;
int local_tags_count;
uint64_t footer_partition;
int system_item;
int64_t essence_offset;
int first_essence_kl_length;
int64_t first_essence_length;
@ -205,6 +206,7 @@ typedef struct {
/* partial keys to match */
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 const uint8_t mxf_system_item_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x03,0x01,0x04 };
static const uint8_t mxf_klv_key[] = { 0x06,0x0e,0x2b,0x34 };
/* complete keys to match */
static const uint8_t mxf_crypto_source_container_ul[] = { 0x06,0x0e,0x2b,0x34,0x01,0x01,0x01,0x09,0x06,0x01,0x01,0x02,0x02,0x00,0x00,0x00 };
@ -990,7 +992,7 @@ static int mxf_parse_index(MXFContext *mxf, int i, AVStream *st)
accumulated_offset = 0;
/* HACK: How to correctly link between streams and slices? */
if (i < st->index)
if (i < mxf->system_item + st->index)
n_delta++;
if (n_delta >= tableseg->nb_delta_entries && st->index != 0)
continue;
@ -1356,6 +1358,11 @@ static int mxf_read_header(AVFormatContext *s, AVFormatParameters *ap)
avio_seek(s->pb, klv.offset, SEEK_SET);
break;
}
if (IS_KLV_KEY(klv.key, mxf_system_item_key)) {
mxf->system_item = 1;
avio_skip(s->pb, klv.length);
continue;
}
for (metadata = mxf_metadata_read_table; metadata->read; metadata++) {
if (IS_KLV_KEY(klv.key, metadata->key)) {