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mxfdec: Use MaterialPackage - Track - TrackID instead of the system_item hack. 

Signed-off-by: Janne Grunau <janne-libav@jannau.net>
This commit is contained in:
Tomas Härdin 2011-12-08 11:53:57 +01:00 committed by Janne Grunau
parent 21cc4b3327
commit f4187945a0
1 changed files with 10 additions and 13 deletions
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23
libavformat/mxfdec.c
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@ -190,7 +190,6 @@ 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;
@ -1024,17 +1023,22 @@ static int mxf_get_sorted_table_segments(MXFContext *mxf, int *nb_sorted_segment
return 0;
}
static int mxf_parse_index(MXFContext *mxf, int i, AVStream *st)
static int mxf_parse_index(MXFContext *mxf, int track_id, AVStream *st)
{
int64_t accumulated_offset = 0;
int j, k, ret, nb_sorted_segments;
MXFIndexTableSegment **sorted_segments;
int n_delta = track_id - 1; /* TrackID = 1-based stream index */
if (track_id < 1) {
av_log(mxf->fc, AV_LOG_ERROR, "TrackID not positive: %i\n", track_id);
return AVERROR_INVALIDDATA;
}
if ((ret = mxf_get_sorted_table_segments(mxf, &nb_sorted_segments, &sorted_segments)))
return ret;
for (j = 0; j < nb_sorted_segments; j++) {
int n_delta = i;
int duration, sample_duration = 1, last_sample_size = 0;
int64_t segment_size;
MXFIndexTableSegment *tableseg = sorted_segments[j];
@ -1043,9 +1047,6 @@ static int mxf_parse_index(MXFContext *mxf, int i, AVStream *st)
if (j > 0 && tableseg->body_sid != sorted_segments[j-1]->body_sid)
accumulated_offset = 0;
/* HACK: How to correctly link between streams and slices? */
if (i < mxf->system_item + st->index)
n_delta++;
if (n_delta >= tableseg->nb_delta_entries && st->index != 0)
continue;
duration = tableseg->index_duration > 0 ? tableseg->index_duration :
@ -1113,8 +1114,8 @@ static int mxf_parse_index(MXFContext *mxf, int i, AVStream *st)
pos += mxf->essence_offset;
av_dlog(mxf->fc, "Stream %d IndexEntry %d n_Delta %d Offset %"PRIx64" Timestamp %"PRId64"\n",
st->index, st->nb_index_entries, n_delta, pos, sample_duration * st->nb_index_entries);
av_dlog(mxf->fc, "Stream %d IndexEntry %d TrackID %d Offset %"PRIx64" Timestamp %"PRId64"\n",
st->index, st->nb_index_entries, track_id, pos, sample_duration * st->nb_index_entries);
if ((ret = av_add_index_entry(st, pos, sample_duration * st->nb_index_entries, size, 0, flags)) < 0)
return ret;
@ -1313,7 +1314,7 @@ static int mxf_parse_structural_metadata(MXFContext *mxf)
st->need_parsing = AVSTREAM_PARSE_FULL;
}
if ((ret = mxf_parse_index(mxf, i, st)))
if ((ret = mxf_parse_index(mxf, material_track->track_id, st)))
return ret;
}
return 0;
@ -1576,10 +1577,6 @@ static int mxf_read_header(AVFormatContext *s, AVFormatParameters *ap)
compute_partition_essence_offset(s, mxf, &klv);
}
if (IS_KLV_KEY(klv.key, mxf_system_item_key)) {
mxf->system_item = 1;
}
if (!mxf->essence_offset)
mxf->essence_offset = klv.offset;