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Extend mxf_resolve_strong_ref by a type parameter, to avoid modify something 

that actually has a different type.

Originally committed as revision 7448 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Reimar Döffinger 2007-01-13 18:54:48 +00:00
parent 717f1019a8
commit 2d193b2ea0
1 changed files with 16 additions and 22 deletions
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38
libavformat/mxf.c
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@ -741,14 +741,15 @@ static enum CodecType mxf_get_codec_type(const MXFDataDefinitionUL *uls, UID *ui
return uls->type;
}
static void *mxf_resolve_strong_ref(MXFContext *mxf, UID *strong_ref)
static void *mxf_resolve_strong_ref(MXFContext *mxf, UID *strong_ref, enum MXFMetadataSetType type)
{
int i;
if (!strong_ref)
return NULL;
for (i = 0; i < mxf->metadata_sets_count; i++) {
if (!memcmp(*strong_ref, mxf->metadata_sets[i]->uid, 16)) {
if (!memcmp(*strong_ref, mxf->metadata_sets[i]->uid, 16) &&
mxf->metadata_sets[i]->type == type) {
return mxf->metadata_sets[i];
}
}
@ -764,14 +765,8 @@ static int mxf_parse_structural_metadata(MXFContext *mxf)
dprintf("metadata sets count %d\n", mxf->metadata_sets_count);
/* TODO: handle multiple material packages (OP3x) */
for (i = 0; i < mxf->packages_count; i++) {
if (!(temp_package = mxf_resolve_strong_ref(mxf, &mxf->packages_refs[i]))) {
av_log(mxf->fc, AV_LOG_ERROR, "could not resolve package strong ref\n");
return -1;
}
if (temp_package->type == MaterialPackage) {
material_package = temp_package;
break;
}
material_package = mxf_resolve_strong_ref(mxf, &mxf->packages_refs[i], MaterialPackage);
if (material_package) break;
}
if (!material_package) {
av_log(mxf->fc, AV_LOG_ERROR, "no material package found\n");
@ -789,12 +784,12 @@ static int mxf_parse_structural_metadata(MXFContext *mxf)
const MXFCodecUL *container_ul = NULL;
AVStream *st;
if (!(material_track = mxf_resolve_strong_ref(mxf, &material_package->tracks_refs[i]))) {
if (!(material_track = mxf_resolve_strong_ref(mxf, &material_package->tracks_refs[i], Track))) {
av_log(mxf->fc, AV_LOG_ERROR, "could not resolve material track strong ref\n");
continue;
}
if (!(material_track->sequence = mxf_resolve_strong_ref(mxf, &material_track->sequence_ref))) {
if (!(material_track->sequence = mxf_resolve_strong_ref(mxf, &material_track->sequence_ref, Sequence))) {
av_log(mxf->fc, AV_LOG_ERROR, "could not resolve material track sequence strong ref\n");
return -1;
}
@ -802,15 +797,14 @@ static int mxf_parse_structural_metadata(MXFContext *mxf)
/* TODO: handle multiple source clips */
for (j = 0; j < material_track->sequence->structural_components_count; j++) {
/* TODO: handle timecode component */
component = mxf_resolve_strong_ref(mxf, &material_track->sequence->structural_components_refs[j]);
if (!component || component->type != SourceClip)
component = mxf_resolve_strong_ref(mxf, &material_track->sequence->structural_components_refs[j], SourceClip);
if (!component)
continue;
for (k = 0; k < mxf->packages_count; k++) {
if (!(temp_package = mxf_resolve_strong_ref(mxf, &mxf->packages_refs[k]))) {
av_log(mxf->fc, AV_LOG_ERROR, "could not resolve package strong ref\n");
return -1;
}
temp_package = mxf_resolve_strong_ref(mxf, &mxf->packages_refs[k], SourcePackage);
if (!temp_package)
continue;
if (!memcmp(temp_package->package_uid, component->source_package_uid, 16)) {
source_package = temp_package;
break;
@ -821,7 +815,7 @@ static int mxf_parse_structural_metadata(MXFContext *mxf)
break;
}
for (k = 0; k < source_package->tracks_count; k++) {
if (!(temp_track = mxf_resolve_strong_ref(mxf, &source_package->tracks_refs[k]))) {
if (!(temp_track = mxf_resolve_strong_ref(mxf, &source_package->tracks_refs[k], Track))) {
av_log(mxf->fc, AV_LOG_ERROR, "could not resolve source track strong ref\n");
return -1;
}
@ -846,7 +840,7 @@ static int mxf_parse_structural_metadata(MXFContext *mxf)
st->start_time = component->start_position;
av_set_pts_info(st, 64, material_track->edit_rate.num, material_track->edit_rate.den);
if (!(source_track->sequence = mxf_resolve_strong_ref(mxf, &source_track->sequence_ref))) {
if (!(source_track->sequence = mxf_resolve_strong_ref(mxf, &source_track->sequence_ref, Sequence))) {
av_log(mxf->fc, AV_LOG_ERROR, "could not resolve source track sequence strong ref\n");
return -1;
}
@ -856,11 +850,11 @@ static int mxf_parse_structural_metadata(MXFContext *mxf)
#endif
st->codec->codec_type = mxf_get_codec_type(mxf_data_definition_uls, &source_track->sequence->data_definition_ul);
source_package->descriptor = mxf_resolve_strong_ref(mxf, &source_package->descriptor_ref);
source_package->descriptor = mxf_resolve_strong_ref(mxf, &source_package->descriptor_ref, Descriptor);
if (source_package->descriptor) {
if (source_package->descriptor->type == MultipleDescriptor) {
for (j = 0; j < source_package->descriptor->sub_descriptors_count; j++) {
MXFDescriptor *sub_descriptor = mxf_resolve_strong_ref(mxf, &source_package->descriptor->sub_descriptors_refs[j]);
MXFDescriptor *sub_descriptor = mxf_resolve_strong_ref(mxf, &source_package->descriptor->sub_descriptors_refs[j], Descriptor);
if (!sub_descriptor) {
av_log(mxf->fc, AV_LOG_ERROR, "could not resolve sub descriptor strong ref\n");