mirror of
https://git.videolan.org/git/ffmpeg.git
synced 2024-09-13 10:39:08 +02:00
follow michael suggestion and simplify code at object level
Originally committed as revision 7507 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Baptiste Coudurier
parent
621810045c
commit
33bddcdc13
@ -169,7 +169,9 @@ typedef struct MXFDataDefinitionUL {
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typedef struct MXFMetadataReadTableEntry {
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const UID key;
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int (*read)(MXFContext *mxf, KLVPacket *klv);
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int (*read)();
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int ctx_size;
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enum MXFMetadataSetType type;
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} MXFMetadataReadTableEntry;
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/* partial keys to match */
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@ -298,15 +300,8 @@ static int mxf_add_metadata_set(MXFContext *mxf, void *metadata_set)
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return 0;
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}
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static int mxf_read_metadata_preface(MXFContext *mxf, KLVPacket *klv)
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static int mxf_read_metadata_preface(MXFContext *mxf, ByteIOContext *pb, int tag)
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{
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ByteIOContext *pb = &mxf->fc->pb;
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int bytes_read = 0;
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while (bytes_read < klv->length) {
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int tag = get_be16(pb);
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int size = get_be16(pb); /* SMPTE 336M Table 8 KLV specified length, 0x53 */
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switch (tag) {
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case 0x3B03:
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get_buffer(pb, mxf->content_storage_uid, 16);
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@ -322,24 +317,12 @@ static int mxf_read_metadata_preface(MXFContext *mxf, KLVPacket *klv)
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url_fskip(pb, 4); /* useless size of objects, always 16 according to specs */
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get_buffer(pb, (uint8_t *)mxf->essence_containers_uls, mxf->essence_containers_uls_count * sizeof(UID));
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break;
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default:
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url_fskip(pb, size);
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}
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bytes_read += size + 4;
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}
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return 0;
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}
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static int mxf_read_metadata_content_storage(MXFContext *mxf, KLVPacket *klv)
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static int mxf_read_metadata_content_storage(MXFContext *mxf, ByteIOContext *pb, int tag)
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{
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ByteIOContext *pb = &mxf->fc->pb;
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int bytes_read = 0;
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while (bytes_read < klv->length) {
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int tag = get_be16(pb);
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int size = get_be16(pb); /* SMPTE 336M Table 8 KLV specified length, 0x53 */
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dprintf("tag 0x%04X, size %d\n", tag, size);
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switch (tag) {
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case 0x1901:
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mxf->packages_count = get_be32(pb);
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@ -357,45 +340,13 @@ static int mxf_read_metadata_content_storage(MXFContext *mxf, KLVPacket *klv)
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url_fskip(pb, 4); /* useless size of objects, always 16 according to specs */
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get_buffer(pb, (uint8_t *)mxf->essence_container_data_sets_refs, mxf->essence_container_data_sets_count * sizeof(UID));
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break;
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default:
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url_fskip(pb, size);
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}
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bytes_read += size + 4;
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}
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return 0;
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}
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#define MXF_READ_LOCAL_TAGS_START(typename, ctype, name) \
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ByteIOContext *pb = &mxf->fc->pb;\
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ctype *name = av_mallocz(sizeof(*name));\
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int bytes_read = 0;\
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\
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while (bytes_read < klv->length) {\
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int tag = get_be16(pb);\
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int size = get_be16(pb); /* KLV specified by 0x53 */\
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\
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bytes_read += size + 4;\
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dprintf("tag 0x%04X, size %d\n", tag, size);\
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if (!size) { /* ignore empty tag, needed for some files with empty UMID tag */\
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av_log(mxf->fc, AV_LOG_ERROR, "local tag 0x%04X with 0 size\n", tag);\
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continue;\
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}\
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switch (tag) {\
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case 0x3C0A:\
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get_buffer(pb, name->uid, 16);\
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break;
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#define MXF_READ_LOCAL_TAGS_STOP(typename, ctype, name)\
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default:\
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url_fskip(pb, size);\
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}\
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}\
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name->type = typename;\
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return mxf_add_metadata_set(mxf, name);
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static int mxf_read_metadata_source_clip(MXFContext *mxf, KLVPacket *klv)
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static int mxf_read_metadata_source_clip(MXFStructuralComponent *source_clip, ByteIOContext *pb, int tag)
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{
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MXF_READ_LOCAL_TAGS_START(SourceClip, MXFStructuralComponent, source_clip)
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switch(tag) {
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case 0x0202:
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source_clip->duration = get_be64(pb);
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break;
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@ -410,12 +361,13 @@ MXF_READ_LOCAL_TAGS_START(SourceClip, MXFStructuralComponent, source_clip)
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case 0x1102:
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source_clip->source_track_id = get_be32(pb);
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break;
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MXF_READ_LOCAL_TAGS_STOP(SourceClip, MXFStructuralComponent, source_clip)
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}
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return 0;
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}
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static int mxf_read_metadata_material_package(MXFContext *mxf, KLVPacket *klv)
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static int mxf_read_metadata_material_package(MXFPackage *package, ByteIOContext *pb, int tag)
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{
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MXF_READ_LOCAL_TAGS_START(MaterialPackage, MXFPackage, package)
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switch(tag) {
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case 0x4403:
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package->tracks_count = get_be32(pb);
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if (package->tracks_count >= UINT_MAX / sizeof(UID))
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@ -424,12 +376,13 @@ MXF_READ_LOCAL_TAGS_START(MaterialPackage, MXFPackage, package)
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url_fskip(pb, 4); /* useless size of objects, always 16 according to specs */
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get_buffer(pb, (uint8_t *)package->tracks_refs, package->tracks_count * sizeof(UID));
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break;
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MXF_READ_LOCAL_TAGS_STOP(MaterialPackage, MXFPackage, package)
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}
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return 0;
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}
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static int mxf_read_metadata_track(MXFContext *mxf, KLVPacket *klv)
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static int mxf_read_metadata_track(MXFTrack *track, ByteIOContext *pb, int tag)
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{
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MXF_READ_LOCAL_TAGS_START(Track, MXFTrack, track)
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switch(tag) {
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case 0x4801:
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track->track_id = get_be32(pb);
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break;
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@ -443,12 +396,13 @@ MXF_READ_LOCAL_TAGS_START(Track, MXFTrack, track)
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case 0x4803:
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get_buffer(pb, track->sequence_ref, 16);
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break;
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MXF_READ_LOCAL_TAGS_STOP(Track, MXFTrack, track)
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}
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return 0;
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}
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static int mxf_read_metadata_sequence(MXFContext *mxf, KLVPacket *klv)
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static int mxf_read_metadata_sequence(MXFSequence *sequence, ByteIOContext *pb, int tag)
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{
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MXF_READ_LOCAL_TAGS_START(Sequence, MXFSequence, sequence)
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switch(tag) {
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case 0x0202:
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sequence->duration = get_be64(pb);
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break;
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@ -463,12 +417,13 @@ MXF_READ_LOCAL_TAGS_START(Sequence, MXFSequence, sequence)
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url_fskip(pb, 4); /* useless size of objects, always 16 according to specs */
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get_buffer(pb, (uint8_t *)sequence->structural_components_refs, sequence->structural_components_count * sizeof(UID));
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break;
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MXF_READ_LOCAL_TAGS_STOP(Sequence, MXFSequence, sequence)
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}
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return 0;
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}
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static int mxf_read_metadata_source_package(MXFContext *mxf, KLVPacket *klv)
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static int mxf_read_metadata_source_package(MXFPackage *package, ByteIOContext *pb, int tag)
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{
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MXF_READ_LOCAL_TAGS_START(SourcePackage, MXFPackage, package)
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switch(tag) {
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case 0x4403:
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package->tracks_count = get_be32(pb);
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if (package->tracks_count >= UINT_MAX / sizeof(UID))
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@ -485,12 +440,13 @@ MXF_READ_LOCAL_TAGS_START(SourcePackage, MXFPackage, package)
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case 0x4701:
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get_buffer(pb, package->descriptor_ref, 16);
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break;
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MXF_READ_LOCAL_TAGS_STOP(SourcePackage, MXFPackage, package)
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}
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return 0;
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}
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static int mxf_read_metadata_multiple_descriptor(MXFContext *mxf, KLVPacket *klv)
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static int mxf_read_metadata_multiple_descriptor(MXFDescriptor *descriptor, ByteIOContext *pb, int tag)
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{
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MXF_READ_LOCAL_TAGS_START(MultipleDescriptor, MXFDescriptor, descriptor)
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switch(tag) {
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case 0x3F01:
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descriptor->sub_descriptors_count = get_be32(pb);
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if (descriptor->sub_descriptors_count >= UINT_MAX / sizeof(UID))
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@ -499,7 +455,8 @@ MXF_READ_LOCAL_TAGS_START(MultipleDescriptor, MXFDescriptor, descriptor)
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url_fskip(pb, 4); /* useless size of objects, always 16 according to specs */
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get_buffer(pb, (uint8_t *)descriptor->sub_descriptors_refs, descriptor->sub_descriptors_count * sizeof(UID));
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break;
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MXF_READ_LOCAL_TAGS_STOP(MultipleDescriptor, MXFDescriptor, descriptor)
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}
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return 0;
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}
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static void mxf_read_metadata_pixel_layout(ByteIOContext *pb, MXFDescriptor *descriptor)
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@ -525,9 +482,9 @@ static void mxf_read_metadata_pixel_layout(ByteIOContext *pb, MXFDescriptor *des
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} while (code != 0); /* SMPTE 377M E.2.46 */
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}
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static int mxf_read_metadata_generic_descriptor(MXFContext *mxf, KLVPacket *klv)
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static int mxf_read_metadata_generic_descriptor(MXFDescriptor *descriptor, ByteIOContext *pb, int tag, int size)
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{
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MXF_READ_LOCAL_TAGS_START(Descriptor, MXFDescriptor, descriptor)
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switch(tag) {
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case 0x3004:
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get_buffer(pb, descriptor->essence_container_ul, 16);
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break;
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@ -568,7 +525,8 @@ MXF_READ_LOCAL_TAGS_START(Descriptor, MXFDescriptor, descriptor)
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descriptor->extradata_size = size;
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get_buffer(pb, descriptor->extradata, size);
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break;
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MXF_READ_LOCAL_TAGS_STOP(Descriptor, MXFDescriptor, descriptor)
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}
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return 0;
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}
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/* SMPTE RP224 http://www.smpte-ra.org/mdd/index.html */
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@ -829,22 +787,22 @@ static int mxf_parse_structural_metadata(MXFContext *mxf)
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}
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static const MXFMetadataReadTableEntry mxf_metadata_read_table[] = {
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{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x2F,0x00 }, mxf_read_metadata_preface },
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{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x18,0x00 }, mxf_read_metadata_content_storage },
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{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x37,0x00 }, mxf_read_metadata_source_package },
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{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x36,0x00 }, mxf_read_metadata_material_package },
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{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x0F,0x00 }, mxf_read_metadata_sequence },
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{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x11,0x00 }, mxf_read_metadata_source_clip },
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{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x44,0x00 }, mxf_read_metadata_multiple_descriptor },
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{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x42,0x00 }, mxf_read_metadata_generic_descriptor }, /* Generic Sound */
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{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x28,0x00 }, mxf_read_metadata_generic_descriptor }, /* CDCI */
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{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x29,0x00 }, mxf_read_metadata_generic_descriptor }, /* RGBA */
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{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 }, mxf_read_metadata_generic_descriptor }, /* MPEG 2 Video */
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{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 }, mxf_read_metadata_generic_descriptor }, /* Wave */
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{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 }, mxf_read_metadata_generic_descriptor }, /* AES3 */
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{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x3A,0x00 }, mxf_read_metadata_track }, /* Static Track */
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{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x3B,0x00 }, mxf_read_metadata_track }, /* Generic Track */
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{ { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, NULL },
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{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x2F,0x00 }, mxf_read_metadata_preface, 0, AnyType },
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{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x18,0x00 }, mxf_read_metadata_content_storage, 0, AnyType },
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{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x37,0x00 }, mxf_read_metadata_source_package, sizeof(MXFPackage), SourcePackage },
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{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x36,0x00 }, mxf_read_metadata_material_package, sizeof(MXFPackage), MaterialPackage },
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{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x0F,0x00 }, mxf_read_metadata_sequence, sizeof(MXFSequence), Sequence },
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{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x11,0x00 }, mxf_read_metadata_source_clip, sizeof(MXFStructuralComponent), SourceClip },
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{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x44,0x00 }, mxf_read_metadata_multiple_descriptor, sizeof(MXFDescriptor), MultipleDescriptor },
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{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x42,0x00 }, mxf_read_metadata_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* Generic Sound */
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{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x28,0x00 }, mxf_read_metadata_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* CDCI */
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{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x29,0x00 }, mxf_read_metadata_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* RGBA */
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{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 }, mxf_read_metadata_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* MPEG 2 Video */
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{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 }, mxf_read_metadata_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* Wave */
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{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 }, mxf_read_metadata_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* AES3 */
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{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x3A,0x00 }, mxf_read_metadata_track, sizeof(MXFTrack), Track }, /* Static Track */
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{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x3B,0x00 }, mxf_read_metadata_track, sizeof(MXFTrack), Track }, /* Generic Track */
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{ { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, NULL, 0, AnyType },
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};
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static int mxf_read_sync(ByteIOContext *pb, const uint8_t *key, unsigned size)
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@ -860,6 +818,32 @@ static int mxf_read_sync(ByteIOContext *pb, const uint8_t *key, unsigned size)
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return i == size;
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}
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static int mxf_read_local_tags(MXFContext *mxf, KLVPacket *klv, int (*read_child)(), int ctx_size, enum MXFMetadataSetType type)
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{
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ByteIOContext *pb = &mxf->fc->pb;
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MXFMetadataSet *ctx = ctx_size ? av_mallocz(ctx_size) : mxf;
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uint64_t klv_end= url_ftell(pb) + klv->length;
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while (url_ftell(pb) + 4 < klv_end) {
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int tag = get_be16(pb);
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int size = get_be16(pb); /* KLV specified by 0x53 */
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uint64_t next= url_ftell(pb) + size;
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if (!size) { /* ignore empty tag, needed for some files with empty UMID tag */
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av_log(mxf->fc, AV_LOG_ERROR, "local tag 0x%04X with 0 size\n", tag);
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continue;
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}
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if(ctx_size && tag == 0x3C0A)
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get_buffer(pb, ctx->uid, 16);
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||||
else
|
||||
read_child(ctx, pb, tag, size);
|
||||
|
||||
url_fseek(pb, next, SEEK_SET);
|
||||
}
|
||||
if (ctx_size) ctx->type = type;
|
||||
return ctx_size ? mxf_add_metadata_set(mxf, ctx) : 0;
|
||||
}
|
||||
|
||||
static int mxf_read_header(AVFormatContext *s, AVFormatParameters *ap)
|
||||
{
|
||||
MXFContext *mxf = s->priv_data;
|
||||
@ -890,7 +874,7 @@ static int mxf_read_header(AVFormatContext *s, AVFormatParameters *ap)
|
||||
|
||||
for (function = mxf_metadata_read_table; function->read; function++) {
|
||||
if (IS_KLV_KEY(klv.key, function->key)) {
|
||||
if (function->read(mxf, &klv) < 0) {
|
||||
if (mxf_read_local_tags(mxf, &klv, function->read, function->ctx_size, function->type) < 0) {
|
||||
av_log(s, AV_LOG_ERROR, "error reading header metadata\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user