void (*write_desc)(AVFormatContext *, AVStream *);
} MXFContainerEssenceEntry;
+typedef struct MXFPackage {
+ char *name;
+ enum MXFMetadataSetType type;
+ int instance;
+ struct MXFPackage *ref;
+} MXFPackage;
+
enum ULIndex {
INDEX_MPEG2 = 0,
INDEX_AES3,
uint32_t tagged_value_count;
AVRational audio_edit_rate;
int store_user_comments;
+ int track_instance_count; // used to generate MXFTrack uuids
} MXFContext;
static const uint8_t uuid_base[] = { 0xAD,0xAB,0x44,0x24,0x2f,0x25,0x4d,0xc7,0x92,0xff,0x29,0xbd };
avio_wb64(pb, mxf->timestamp);
}
-static void mxf_write_content_storage(AVFormatContext *s)
+static void mxf_write_content_storage(AVFormatContext *s, MXFPackage *packages, int package_count)
{
AVIOContext *pb = s->pb;
+ int i;
mxf_write_metadata_key(pb, 0x011800);
PRINT_KEY(s, "content storage key", pb->buf_ptr - 16);
- klv_encode_ber_length(pb, 92);
+ klv_encode_ber_length(pb, 60 + (16 * package_count));
// write uid
mxf_write_local_tag(pb, 16, 0x3C0A);
PRINT_KEY(s, "content storage uid", pb->buf_ptr - 16);
// write package reference
- mxf_write_local_tag(pb, 16 * 2 + 8, 0x1901);
- mxf_write_refs_count(pb, 2);
- mxf_write_uuid(pb, MaterialPackage, 0);
- mxf_write_uuid(pb, SourcePackage, 0);
+ mxf_write_local_tag(pb, 16 * package_count + 8, 0x1901);
+ mxf_write_refs_count(pb, package_count);
+ for (i = 0; i < package_count; i++) {
+ mxf_write_uuid(pb, packages[i].type, packages[i].instance);
+ }
// write essence container data
mxf_write_local_tag(pb, 8 + 16, 0x1902);
mxf_write_uuid(pb, EssenceContainerData, 0);
}
-static void mxf_write_track(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
+static void mxf_write_track(AVFormatContext *s, AVStream *st, MXFPackage *package)
{
MXFContext *mxf = s->priv_data;
AVIOContext *pb = s->pb;
// write track uid
mxf_write_local_tag(pb, 16, 0x3C0A);
- mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, st->index);
+ mxf_write_uuid(pb, Track, mxf->track_instance_count);
PRINT_KEY(s, "track uid", pb->buf_ptr - 16);
// write track id
// write track number
mxf_write_local_tag(pb, 4, 0x4804);
- if (type == MaterialPackage)
+ if (package->type == MaterialPackage)
avio_wb32(pb, 0); // track number of material package is 0
else
avio_write(pb, sc->track_essence_element_key + 12, 4);
// write sequence refs
mxf_write_local_tag(pb, 16, 0x4803);
- mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
+ mxf_write_uuid(pb, Sequence, mxf->track_instance_count);
}
static const uint8_t smpte_12m_timecode_track_data_ul[] = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x01,0x03,0x02,0x01,0x01,0x00,0x00,0x00 };
}
}
-static void mxf_write_sequence(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
+static void mxf_write_sequence(AVFormatContext *s, AVStream *st, MXFPackage *package)
{
MXFContext *mxf = s->priv_data;
AVIOContext *pb = s->pb;
klv_encode_ber_length(pb, 80);
mxf_write_local_tag(pb, 16, 0x3C0A);
- mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
+ mxf_write_uuid(pb, Sequence, mxf->track_instance_count);
PRINT_KEY(s, "sequence uid", pb->buf_ptr - 16);
mxf_write_common_fields(s, st);
component = TimecodeComponent;
else
component = SourceClip;
- if (type == SourcePackage)
- component += TypeBottom;
- mxf_write_uuid(pb, component, st->index);
+
+ mxf_write_uuid(pb, component, mxf->track_instance_count);
}
-static void mxf_write_timecode_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
+static void mxf_write_timecode_component(AVFormatContext *s, AVStream *st, MXFPackage *package)
{
MXFContext *mxf = s->priv_data;
AVIOContext *pb = s->pb;
// UID
mxf_write_local_tag(pb, 16, 0x3C0A);
- mxf_write_uuid(pb, type == MaterialPackage ? TimecodeComponent :
- TimecodeComponent + TypeBottom, st->index);
+ mxf_write_uuid(pb, TimecodeComponent, mxf->track_instance_count);
mxf_write_common_fields(s, st);
avio_w8(pb, !!(mxf->tc.flags & AV_TIMECODE_FLAG_DROPFRAME));
}
-static void mxf_write_structural_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
+static void mxf_write_structural_component(AVFormatContext *s, AVStream *st, MXFPackage *package)
{
+ MXFContext *mxf = s->priv_data;
AVIOContext *pb = s->pb;
int i;
// write uid
mxf_write_local_tag(pb, 16, 0x3C0A);
- mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, st->index);
+ mxf_write_uuid(pb, SourceClip, mxf->track_instance_count);
PRINT_KEY(s, "structural component uid", pb->buf_ptr - 16);
mxf_write_common_fields(s, st);
// write source package uid, end of the reference
mxf_write_local_tag(pb, 32, 0x1101);
- if (type == SourcePackage) {
+ if (!package->ref) {
for (i = 0; i < 4; i++)
avio_wb64(pb, 0);
} else
- mxf_write_umid(s, 1);
+ mxf_write_umid(s, package->ref->instance);
// write source track id
mxf_write_local_tag(pb, 4, 0x1102);
- if (type == SourcePackage)
+ if (package->type == SourcePackage && !package->ref)
avio_wb32(pb, 0);
else
avio_wb32(pb, st->index+2);
}
+static void mxf_write_tape_descriptor(AVFormatContext *s)
+{
+ AVIOContext *pb = s->pb;
+
+ mxf_write_metadata_key(pb, 0x012e00);
+ PRINT_KEY(s, "tape descriptor key", pb->buf_ptr - 16);
+ klv_encode_ber_length(pb, 20);
+ mxf_write_local_tag(pb, 16, 0x3C0A);
+ mxf_write_uuid(pb, TapeDescriptor, 0);
+ PRINT_KEY(s, "tape_desc uid", pb->buf_ptr - 16);
+}
+
+
static void mxf_write_multi_descriptor(AVFormatContext *s)
{
MXFContext *mxf = s->priv_data;
return count;
}
-static void mxf_write_package(AVFormatContext *s, enum MXFMetadataSetType type, const char *package_name)
+static void mxf_write_package(AVFormatContext *s, MXFPackage *package)
{
MXFContext *mxf = s->priv_data;
AVIOContext *pb = s->pb;
int i, track_count = s->nb_streams+1;
- int name_size = mxf_utf16_local_tag_length(package_name);
+ int name_size = mxf_utf16_local_tag_length(package->name);
int user_comment_count = 0;
- if (type == MaterialPackage) {
+ if (package->type == MaterialPackage) {
if (mxf->store_user_comments)
user_comment_count = mxf_write_user_comments(s, s->metadata);
mxf_write_metadata_key(pb, 0x013600);
// write uid
mxf_write_local_tag(pb, 16, 0x3C0A);
- mxf_write_uuid(pb, type, 0);
- av_log(s, AV_LOG_DEBUG, "package type:%d\n", type);
+ mxf_write_uuid(pb, package->type, package->instance);
+ av_log(s, AV_LOG_DEBUG, "package type:%d\n", package->type);
PRINT_KEY(s, "package uid", pb->buf_ptr - 16);
// write package umid
mxf_write_local_tag(pb, 32, 0x4401);
- mxf_write_umid(s, type == SourcePackage);
+ mxf_write_umid(s, package->instance);
PRINT_KEY(s, "package umid second part", pb->buf_ptr - 16);
// package name
if (name_size)
- mxf_write_local_tag_utf16(pb, 0x4402, package_name);
+ mxf_write_local_tag_utf16(pb, 0x4402, package->name);
// package creation date
mxf_write_local_tag(pb, 8, 0x4405);
// write track refs
mxf_write_local_tag(pb, track_count*16 + 8, 0x4403);
mxf_write_refs_count(pb, track_count);
- mxf_write_uuid(pb, type == MaterialPackage ? Track :
- Track + TypeBottom, -1); // timecode track
- for (i = 0; i < s->nb_streams; i++)
- mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, i);
+ // these are the uuids of the tracks the will be written in mxf_write_track
+ for (i = 0; i < track_count; i++)
+ mxf_write_uuid(pb, Track, mxf->track_instance_count + i);
// write user comment refs
if (mxf->store_user_comments) {
}
// write multiple descriptor reference
- if (type == SourcePackage) {
+ if (package->type == SourcePackage && package->instance == 1) {
mxf_write_local_tag(pb, 16, 0x4701);
if (s->nb_streams > 1) {
mxf_write_uuid(pb, MultipleDescriptor, 0);
mxf_write_multi_descriptor(s);
} else
mxf_write_uuid(pb, SubDescriptor, 0);
+ } else if (package->type == SourcePackage && package->instance == 2) {
+ mxf_write_local_tag(pb, 16, 0x4701);
+ mxf_write_uuid(pb, TapeDescriptor, 0);
+ mxf_write_tape_descriptor(s);
}
+ /*
+ * for every 1 track in a package there is 1 sequence and 1 component.
+ * all 3 of these elements share the same instance number for generating
+ * there instance uuids. mxf->track_instance_count stores this value.
+ * mxf->track_instance_count is incremented after a group of all 3 of
+ * these elements are written.
+ */
+
// write timecode track
- mxf_write_track(s, mxf->timecode_track, type);
- mxf_write_sequence(s, mxf->timecode_track, type);
- mxf_write_timecode_component(s, mxf->timecode_track, type);
+ mxf_write_track(s, mxf->timecode_track, package);
+ mxf_write_sequence(s, mxf->timecode_track, package);
+ mxf_write_timecode_component(s, mxf->timecode_track, package);
+ mxf->track_instance_count++;
for (i = 0; i < s->nb_streams; i++) {
AVStream *st = s->streams[i];
- mxf_write_track(s, st, type);
- mxf_write_sequence(s, st, type);
- mxf_write_structural_component(s, st, type);
+ mxf_write_track(s, st, package);
+ mxf_write_sequence(s, st, package);
+ mxf_write_structural_component(s, st, package);
+ mxf->track_instance_count++;
- if (type == SourcePackage) {
+ if (package->type == SourcePackage && package->instance == 1) {
MXFStreamContext *sc = st->priv_data;
mxf_essence_container_uls[sc->index].write_desc(s, st);
}
static int mxf_write_header_metadata_sets(AVFormatContext *s)
{
- const char *material_package_name = NULL;
- const char *file_package_name = NULL;
+ MXFContext *mxf = s->priv_data;
AVDictionaryEntry *entry = NULL;
AVStream *st = NULL;
int i;
+ MXFPackage packages[3] = {{0}};
+ int package_count = 2;
+ packages[0].type = MaterialPackage;
+ packages[1].type = SourcePackage;
+ packages[1].instance = 1;
+ packages[0].ref = &packages[1];
+
if (entry = av_dict_get(s->metadata, "material_package_name", NULL, 0))
- material_package_name = entry->value;
+ packages[0].name = entry->value;
if (entry = av_dict_get(s->metadata, "file_package_name", NULL, 0)) {
- file_package_name = entry->value;
+ packages[1].name = entry->value;
} else {
/* check if any of the streams contain a file_package_name */
for (i = 0; i < s->nb_streams; i++) {
st = s->streams[i];
if (entry = av_dict_get(st->metadata, "file_package_name", NULL, 0)) {
- file_package_name = entry->value;
+ packages[1].name = entry->value;
break;
}
}
}
+ entry = av_dict_get(s->metadata, "reel_name", NULL, 0);
+ if (entry) {
+ packages[2].name = entry->value;
+ packages[2].type = SourcePackage;
+ packages[2].instance = 2;
+ packages[1].ref = &packages[2];
+ package_count = 3;
+ }
+
mxf_write_preface(s);
mxf_write_identification(s);
- mxf_write_content_storage(s);
- mxf_write_package(s, MaterialPackage, material_package_name);
- mxf_write_package(s, SourcePackage, file_package_name);
+ mxf_write_content_storage(s, packages, package_count);
+ mxf->track_instance_count = 0;
+ for (i = 0; i < package_count; i++)
+ mxf_write_package(s, &packages[i]);
mxf_write_essence_container_data(s);
return 0;
}
projects / ffmpeg / blobdiff