3 * Copyright (c) 2006 SmartJog S.A., Baptiste Coudurier <baptiste dot coudurier at smartjog dot com>
5 * This file is part of Libav.
7 * Libav is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * Libav is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with Libav; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 * SMPTE 336M KLV Data Encoding Protocol Using Key-Length-Value
25 * SMPTE 377M MXF File Format Specifications
26 * SMPTE 378M Operational Pattern 1a
27 * SMPTE 379M MXF Generic Container
28 * SMPTE 381M Mapping MPEG Streams into the MXF Generic Container
29 * SMPTE 382M Mapping AES3 and Broadcast Wave Audio into the MXF Generic Container
30 * SMPTE 383M Mapping DV-DIF Data to the MXF Generic Container
33 * Search for Track numbers which will identify essence element KLV packets.
34 * Search for SourcePackage which define tracks which contains Track numbers.
35 * Material Package contains tracks with reference to SourcePackage tracks.
36 * Search for Descriptors (Picture, Sound) which contains codec info and parameters.
37 * Assign Descriptors to correct Tracks.
39 * Metadata reading functions read Local Tags, get InstanceUID(0x3C0A) then add MetaDataSet to MXFContext.
40 * Metadata parsing resolves Strong References to objects.
42 * Simple demuxer, only OP1A supported and some files might not work at all.
43 * Only tracks with associated descriptors will be decoded. "Highly Desirable" SMPTE 377M D.1
48 #include "libavutil/aes.h"
49 #include "libavutil/mathematics.h"
50 #include "libavcodec/bytestream.h"
57 enum MXFMetadataSetType type;
58 UID source_container_ul;
63 enum MXFMetadataSetType type;
64 UID source_package_uid;
65 UID data_definition_ul;
67 int64_t start_position;
69 } MXFStructuralComponent;
73 enum MXFMetadataSetType type;
74 UID data_definition_ul;
75 UID *structural_components_refs;
76 int structural_components_count;
82 enum MXFMetadataSetType type;
83 MXFSequence *sequence; /* mandatory, and only one */
86 uint8_t track_number[4];
92 enum MXFMetadataSetType type;
93 UID essence_container_ul;
95 AVRational sample_rate;
96 AVRational aspect_ratio;
101 UID *sub_descriptors_refs;
102 int sub_descriptors_count;
106 enum PixelFormat pix_fmt;
111 enum MXFMetadataSetType type;
112 } MXFIndexTableSegment;
116 enum MXFMetadataSetType type;
120 MXFDescriptor *descriptor; /* only one */
126 enum MXFMetadataSetType type;
132 MXFMetadataSet **metadata_sets;
133 int metadata_sets_count;
137 int local_tags_count;
140 enum MXFWrappingScheme {
145 typedef int MXFMetadataReadFunc(void *arg, AVIOContext *pb, int tag, int size, UID uid);
149 MXFMetadataReadFunc *read;
151 enum MXFMetadataSetType type;
152 } MXFMetadataReadTableEntry;
154 /* partial keys to match */
155 static const uint8_t mxf_header_partition_pack_key[] = { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02 };
156 static const uint8_t mxf_essence_element_key[] = { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01 };
157 static const uint8_t mxf_klv_key[] = { 0x06,0x0e,0x2b,0x34 };
158 /* complete keys to match */
159 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 };
160 static const uint8_t mxf_encrypted_triplet_key[] = { 0x06,0x0e,0x2b,0x34,0x02,0x04,0x01,0x07,0x0d,0x01,0x03,0x01,0x02,0x7e,0x01,0x00 };
161 static const uint8_t mxf_encrypted_essence_container[] = { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x0d,0x01,0x03,0x01,0x02,0x0b,0x01,0x00 };
162 static const uint8_t mxf_sony_mpeg4_extradata[] = { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0e,0x06,0x06,0x02,0x02,0x01,0x00,0x00 };
164 #define IS_KLV_KEY(x, y) (!memcmp(x, y, sizeof(y)))
166 static int64_t klv_decode_ber_length(AVIOContext *pb)
168 uint64_t size = avio_r8(pb);
169 if (size & 0x80) { /* long form */
170 int bytes_num = size & 0x7f;
171 /* SMPTE 379M 5.3.4 guarantee that bytes_num must not exceed 8 bytes */
176 size = size << 8 | avio_r8(pb);
181 static int mxf_read_sync(AVIOContext *pb, const uint8_t *key, unsigned size)
184 for (i = 0; i < size && !pb->eof_reached; i++) {
188 else if (b != key[i])
194 static int klv_read_packet(KLVPacket *klv, AVIOContext *pb)
196 if (!mxf_read_sync(pb, mxf_klv_key, 4))
198 klv->offset = avio_tell(pb) - 4;
199 memcpy(klv->key, mxf_klv_key, 4);
200 avio_read(pb, klv->key + 4, 12);
201 klv->length = klv_decode_ber_length(pb);
202 return klv->length == -1 ? -1 : 0;
205 static int mxf_get_stream_index(AVFormatContext *s, KLVPacket *klv)
209 for (i = 0; i < s->nb_streams; i++) {
210 MXFTrack *track = s->streams[i]->priv_data;
212 if (!memcmp(klv->key + sizeof(mxf_essence_element_key), track->track_number, sizeof(track->track_number)))
215 /* return 0 if only one stream, for OP Atom files with 0 as track number */
216 return s->nb_streams == 1 ? 0 : -1;
219 /* XXX: use AVBitStreamFilter */
220 static int mxf_get_d10_aes3_packet(AVIOContext *pb, AVStream *st, AVPacket *pkt, int64_t length)
222 const uint8_t *buf_ptr, *end_ptr;
226 if (length > 61444) /* worst case PAL 1920 samples 8 channels */
228 length = av_get_packet(pb, pkt, length);
231 data_ptr = pkt->data;
232 end_ptr = pkt->data + length;
233 buf_ptr = pkt->data + 4; /* skip SMPTE 331M header */
234 for (; buf_ptr + st->codec->channels*4 < end_ptr; ) {
235 for (i = 0; i < st->codec->channels; i++) {
236 uint32_t sample = bytestream_get_le32(&buf_ptr);
237 if (st->codec->bits_per_coded_sample == 24)
238 bytestream_put_le24(&data_ptr, (sample >> 4) & 0xffffff);
240 bytestream_put_le16(&data_ptr, (sample >> 12) & 0xffff);
242 buf_ptr += 32 - st->codec->channels*4; // always 8 channels stored SMPTE 331M
244 av_shrink_packet(pkt, data_ptr - pkt->data);
248 static int mxf_decrypt_triplet(AVFormatContext *s, AVPacket *pkt, KLVPacket *klv)
250 static const uint8_t checkv[16] = {0x43, 0x48, 0x55, 0x4b, 0x43, 0x48, 0x55, 0x4b, 0x43, 0x48, 0x55, 0x4b, 0x43, 0x48, 0x55, 0x4b};
251 MXFContext *mxf = s->priv_data;
252 AVIOContext *pb = s->pb;
253 int64_t end = avio_tell(pb) + klv->length;
256 uint64_t plaintext_size;
261 if (!mxf->aesc && s->key && s->keylen == 16) {
262 mxf->aesc = av_malloc(av_aes_size);
265 av_aes_init(mxf->aesc, s->key, 128, 1);
268 avio_skip(pb, klv_decode_ber_length(pb));
270 klv_decode_ber_length(pb);
271 plaintext_size = avio_rb64(pb);
273 klv_decode_ber_length(pb);
274 avio_read(pb, klv->key, 16);
275 if (!IS_KLV_KEY(klv, mxf_essence_element_key))
277 index = mxf_get_stream_index(s, klv);
281 klv_decode_ber_length(pb);
282 orig_size = avio_rb64(pb);
283 if (orig_size < plaintext_size)
286 size = klv_decode_ber_length(pb);
287 if (size < 32 || size - 32 < orig_size)
289 avio_read(pb, ivec, 16);
290 avio_read(pb, tmpbuf, 16);
292 av_aes_crypt(mxf->aesc, tmpbuf, tmpbuf, 1, ivec, 1);
293 if (memcmp(tmpbuf, checkv, 16))
294 av_log(s, AV_LOG_ERROR, "probably incorrect decryption key\n");
296 size = av_get_packet(pb, pkt, size);
299 else if (size < plaintext_size)
300 return AVERROR_INVALIDDATA;
301 size -= plaintext_size;
303 av_aes_crypt(mxf->aesc, &pkt->data[plaintext_size],
304 &pkt->data[plaintext_size], size >> 4, ivec, 1);
305 av_shrink_packet(pkt, orig_size);
306 pkt->stream_index = index;
307 avio_skip(pb, end - avio_tell(pb));
311 static int mxf_read_packet(AVFormatContext *s, AVPacket *pkt)
315 while (!s->pb->eof_reached) {
316 if (klv_read_packet(&klv, s->pb) < 0)
318 PRINT_KEY(s, "read packet", klv.key);
319 av_dlog(s, "size %"PRIu64" offset %#"PRIx64"\n", klv.length, klv.offset);
320 if (IS_KLV_KEY(klv.key, mxf_encrypted_triplet_key)) {
321 int res = mxf_decrypt_triplet(s, pkt, &klv);
323 av_log(s, AV_LOG_ERROR, "invalid encoded triplet\n");
328 if (IS_KLV_KEY(klv.key, mxf_essence_element_key)) {
329 int index = mxf_get_stream_index(s, &klv);
331 av_log(s, AV_LOG_ERROR, "error getting stream index %d\n", AV_RB32(klv.key+12));
334 if (s->streams[index]->discard == AVDISCARD_ALL)
336 /* check for 8 channels AES3 element */
337 if (klv.key[12] == 0x06 && klv.key[13] == 0x01 && klv.key[14] == 0x10) {
338 if (mxf_get_d10_aes3_packet(s->pb, s->streams[index], pkt, klv.length) < 0) {
339 av_log(s, AV_LOG_ERROR, "error reading D-10 aes3 frame\n");
343 int ret = av_get_packet(s->pb, pkt, klv.length);
347 pkt->stream_index = index;
348 pkt->pos = klv.offset;
352 avio_skip(s->pb, klv.length);
357 static int mxf_read_primer_pack(void *arg, AVIOContext *pb, int tag, int size, UID uid)
359 MXFContext *mxf = arg;
360 int item_num = avio_rb32(pb);
361 int item_len = avio_rb32(pb);
363 if (item_len != 18) {
364 av_log(mxf->fc, AV_LOG_ERROR, "unsupported primer pack item length\n");
367 if (item_num > UINT_MAX / item_len)
369 mxf->local_tags_count = item_num;
370 mxf->local_tags = av_malloc(item_num*item_len);
371 if (!mxf->local_tags)
373 avio_read(pb, mxf->local_tags, item_num*item_len);
377 static int mxf_add_metadata_set(MXFContext *mxf, void *metadata_set)
379 if (mxf->metadata_sets_count+1 >= UINT_MAX / sizeof(*mxf->metadata_sets))
380 return AVERROR(ENOMEM);
381 mxf->metadata_sets = av_realloc(mxf->metadata_sets, (mxf->metadata_sets_count + 1) * sizeof(*mxf->metadata_sets));
382 if (!mxf->metadata_sets)
384 mxf->metadata_sets[mxf->metadata_sets_count] = metadata_set;
385 mxf->metadata_sets_count++;
389 static int mxf_read_cryptographic_context(void *arg, AVIOContext *pb, int tag, int size, UID uid)
391 MXFCryptoContext *cryptocontext = arg;
394 if (IS_KLV_KEY(uid, mxf_crypto_source_container_ul))
395 avio_read(pb, cryptocontext->source_container_ul, 16);
399 static int mxf_read_content_storage(void *arg, AVIOContext *pb, int tag, int size, UID uid)
401 MXFContext *mxf = arg;
404 mxf->packages_count = avio_rb32(pb);
405 if (mxf->packages_count >= UINT_MAX / sizeof(UID))
407 mxf->packages_refs = av_malloc(mxf->packages_count * sizeof(UID));
408 if (!mxf->packages_refs)
410 avio_skip(pb, 4); /* useless size of objects, always 16 according to specs */
411 avio_read(pb, (uint8_t *)mxf->packages_refs, mxf->packages_count * sizeof(UID));
417 static int mxf_read_source_clip(void *arg, AVIOContext *pb, int tag, int size, UID uid)
419 MXFStructuralComponent *source_clip = arg;
422 source_clip->duration = avio_rb64(pb);
425 source_clip->start_position = avio_rb64(pb);
428 /* UMID, only get last 16 bytes */
430 avio_read(pb, source_clip->source_package_uid, 16);
433 source_clip->source_track_id = avio_rb32(pb);
439 static int mxf_read_material_package(void *arg, AVIOContext *pb, int tag, int size, UID uid)
441 MXFPackage *package = arg;
444 package->tracks_count = avio_rb32(pb);
445 if (package->tracks_count >= UINT_MAX / sizeof(UID))
447 package->tracks_refs = av_malloc(package->tracks_count * sizeof(UID));
448 if (!package->tracks_refs)
450 avio_skip(pb, 4); /* useless size of objects, always 16 according to specs */
451 avio_read(pb, (uint8_t *)package->tracks_refs, package->tracks_count * sizeof(UID));
457 static int mxf_read_track(void *arg, AVIOContext *pb, int tag, int size, UID uid)
459 MXFTrack *track = arg;
462 track->track_id = avio_rb32(pb);
465 avio_read(pb, track->track_number, 4);
468 track->edit_rate.den = avio_rb32(pb);
469 track->edit_rate.num = avio_rb32(pb);
472 avio_read(pb, track->sequence_ref, 16);
478 static int mxf_read_sequence(void *arg, AVIOContext *pb, int tag, int size, UID uid)
480 MXFSequence *sequence = arg;
483 sequence->duration = avio_rb64(pb);
486 avio_read(pb, sequence->data_definition_ul, 16);
489 sequence->structural_components_count = avio_rb32(pb);
490 if (sequence->structural_components_count >= UINT_MAX / sizeof(UID))
492 sequence->structural_components_refs = av_malloc(sequence->structural_components_count * sizeof(UID));
493 if (!sequence->structural_components_refs)
495 avio_skip(pb, 4); /* useless size of objects, always 16 according to specs */
496 avio_read(pb, (uint8_t *)sequence->structural_components_refs, sequence->structural_components_count * sizeof(UID));
502 static int mxf_read_source_package(void *arg, AVIOContext *pb, int tag, int size, UID uid)
504 MXFPackage *package = arg;
507 package->tracks_count = avio_rb32(pb);
508 if (package->tracks_count >= UINT_MAX / sizeof(UID))
510 package->tracks_refs = av_malloc(package->tracks_count * sizeof(UID));
511 if (!package->tracks_refs)
513 avio_skip(pb, 4); /* useless size of objects, always 16 according to specs */
514 avio_read(pb, (uint8_t *)package->tracks_refs, package->tracks_count * sizeof(UID));
517 /* UMID, only get last 16 bytes */
519 avio_read(pb, package->package_uid, 16);
522 avio_read(pb, package->descriptor_ref, 16);
528 static int mxf_read_index_table_segment(void *arg, AVIOContext *pb, int tag, int size, UID uid)
531 case 0x3F05: av_dlog(NULL, "EditUnitByteCount %d\n", avio_rb32(pb)); break;
532 case 0x3F06: av_dlog(NULL, "IndexSID %d\n", avio_rb32(pb)); break;
533 case 0x3F07: av_dlog(NULL, "BodySID %d\n", avio_rb32(pb)); break;
534 case 0x3F0B: av_dlog(NULL, "IndexEditRate %d/%d\n", avio_rb32(pb), avio_rb32(pb)); break;
535 case 0x3F0C: av_dlog(NULL, "IndexStartPosition %"PRIu64"\n", avio_rb64(pb)); break;
536 case 0x3F0D: av_dlog(NULL, "IndexDuration %"PRIu64"\n", avio_rb64(pb)); break;
541 static void mxf_read_pixel_layout(AVIOContext *pb, MXFDescriptor *descriptor)
543 int code, value, ofs = 0;
544 char layout[16] = {0};
549 av_dlog(NULL, "pixel layout: code %#x\n", code);
552 layout[ofs++] = code;
553 layout[ofs++] = value;
555 } while (code != 0); /* SMPTE 377M E.2.46 */
557 ff_mxf_decode_pixel_layout(layout, &descriptor->pix_fmt);
560 static int mxf_read_generic_descriptor(void *arg, AVIOContext *pb, int tag, int size, UID uid)
562 MXFDescriptor *descriptor = arg;
565 descriptor->sub_descriptors_count = avio_rb32(pb);
566 if (descriptor->sub_descriptors_count >= UINT_MAX / sizeof(UID))
568 descriptor->sub_descriptors_refs = av_malloc(descriptor->sub_descriptors_count * sizeof(UID));
569 if (!descriptor->sub_descriptors_refs)
571 avio_skip(pb, 4); /* useless size of objects, always 16 according to specs */
572 avio_read(pb, (uint8_t *)descriptor->sub_descriptors_refs, descriptor->sub_descriptors_count * sizeof(UID));
575 avio_read(pb, descriptor->essence_container_ul, 16);
578 descriptor->linked_track_id = avio_rb32(pb);
580 case 0x3201: /* PictureEssenceCoding */
581 avio_read(pb, descriptor->essence_codec_ul, 16);
584 descriptor->width = avio_rb32(pb);
587 descriptor->height = avio_rb32(pb);
590 descriptor->aspect_ratio.num = avio_rb32(pb);
591 descriptor->aspect_ratio.den = avio_rb32(pb);
594 descriptor->sample_rate.num = avio_rb32(pb);
595 descriptor->sample_rate.den = avio_rb32(pb);
597 case 0x3D06: /* SoundEssenceCompression */
598 avio_read(pb, descriptor->essence_codec_ul, 16);
601 descriptor->channels = avio_rb32(pb);
604 descriptor->bits_per_sample = avio_rb32(pb);
607 mxf_read_pixel_layout(pb, descriptor);
610 /* Private uid used by SONY C0023S01.mxf */
611 if (IS_KLV_KEY(uid, mxf_sony_mpeg4_extradata)) {
612 descriptor->extradata = av_malloc(size + FF_INPUT_BUFFER_PADDING_SIZE);
613 if (!descriptor->extradata)
615 descriptor->extradata_size = size;
616 avio_read(pb, descriptor->extradata, size);
624 * Match an uid independently of the version byte and up to len common bytes
627 static int mxf_match_uid(const UID key, const UID uid, int len)
630 for (i = 0; i < len; i++) {
631 if (i != 7 && key[i] != uid[i])
637 static const MXFCodecUL *mxf_get_codec_ul(const MXFCodecUL *uls, UID *uid)
639 while (uls->uid[0]) {
640 if(mxf_match_uid(uls->uid, *uid, uls->matching_len))
647 static void *mxf_resolve_strong_ref(MXFContext *mxf, UID *strong_ref, enum MXFMetadataSetType type)
653 for (i = 0; i < mxf->metadata_sets_count; i++) {
654 if (!memcmp(*strong_ref, mxf->metadata_sets[i]->uid, 16) &&
655 (type == AnyType || mxf->metadata_sets[i]->type == type)) {
656 return mxf->metadata_sets[i];
662 static const MXFCodecUL mxf_essence_container_uls[] = {
663 // video essence container uls
664 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x60,0x01 }, 14, CODEC_ID_MPEG2VIDEO }, /* MPEG-ES Frame wrapped */
665 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x41,0x01 }, 14, CODEC_ID_DVVIDEO }, /* DV 625 25mbps */
666 // sound essence container uls
667 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x01,0x00 }, 14, CODEC_ID_PCM_S16LE }, /* BWF Frame wrapped */
668 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x40,0x01 }, 14, CODEC_ID_MP2 }, /* MPEG-ES Frame wrapped, 0x40 ??? stream id */
669 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 }, 14, CODEC_ID_PCM_S16LE }, /* D-10 Mapping 50Mbps PAL Extended Template */
670 { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, CODEC_ID_NONE },
673 static int mxf_parse_structural_metadata(MXFContext *mxf)
675 MXFPackage *material_package = NULL;
676 MXFPackage *temp_package = NULL;
679 av_dlog(mxf->fc, "metadata sets count %d\n", mxf->metadata_sets_count);
680 /* TODO: handle multiple material packages (OP3x) */
681 for (i = 0; i < mxf->packages_count; i++) {
682 material_package = mxf_resolve_strong_ref(mxf, &mxf->packages_refs[i], MaterialPackage);
683 if (material_package) break;
685 if (!material_package) {
686 av_log(mxf->fc, AV_LOG_ERROR, "no material package found\n");
690 for (i = 0; i < material_package->tracks_count; i++) {
691 MXFPackage *source_package = NULL;
692 MXFTrack *material_track = NULL;
693 MXFTrack *source_track = NULL;
694 MXFTrack *temp_track = NULL;
695 MXFDescriptor *descriptor = NULL;
696 MXFStructuralComponent *component = NULL;
697 UID *essence_container_ul = NULL;
698 const MXFCodecUL *codec_ul = NULL;
699 const MXFCodecUL *container_ul = NULL;
702 if (!(material_track = mxf_resolve_strong_ref(mxf, &material_package->tracks_refs[i], Track))) {
703 av_log(mxf->fc, AV_LOG_ERROR, "could not resolve material track strong ref\n");
707 if (!(material_track->sequence = mxf_resolve_strong_ref(mxf, &material_track->sequence_ref, Sequence))) {
708 av_log(mxf->fc, AV_LOG_ERROR, "could not resolve material track sequence strong ref\n");
712 /* TODO: handle multiple source clips */
713 for (j = 0; j < material_track->sequence->structural_components_count; j++) {
714 /* TODO: handle timecode component */
715 component = mxf_resolve_strong_ref(mxf, &material_track->sequence->structural_components_refs[j], SourceClip);
719 for (k = 0; k < mxf->packages_count; k++) {
720 temp_package = mxf_resolve_strong_ref(mxf, &mxf->packages_refs[k], SourcePackage);
723 if (!memcmp(temp_package->package_uid, component->source_package_uid, 16)) {
724 source_package = temp_package;
728 if (!source_package) {
729 av_log(mxf->fc, AV_LOG_ERROR, "material track %d: no corresponding source package found\n", material_track->track_id);
732 for (k = 0; k < source_package->tracks_count; k++) {
733 if (!(temp_track = mxf_resolve_strong_ref(mxf, &source_package->tracks_refs[k], Track))) {
734 av_log(mxf->fc, AV_LOG_ERROR, "could not resolve source track strong ref\n");
737 if (temp_track->track_id == component->source_track_id) {
738 source_track = temp_track;
743 av_log(mxf->fc, AV_LOG_ERROR, "material track %d: no corresponding source track found\n", material_track->track_id);
750 st = avformat_new_stream(mxf->fc, NULL);
752 av_log(mxf->fc, AV_LOG_ERROR, "could not allocate stream\n");
755 st->id = source_track->track_id;
756 st->priv_data = source_track;
757 st->duration = component->duration;
758 if (st->duration == -1)
759 st->duration = AV_NOPTS_VALUE;
760 st->start_time = component->start_position;
761 avpriv_set_pts_info(st, 64, material_track->edit_rate.num, material_track->edit_rate.den);
763 if (!(source_track->sequence = mxf_resolve_strong_ref(mxf, &source_track->sequence_ref, Sequence))) {
764 av_log(mxf->fc, AV_LOG_ERROR, "could not resolve source track sequence strong ref\n");
768 PRINT_KEY(mxf->fc, "data definition ul", source_track->sequence->data_definition_ul);
769 codec_ul = mxf_get_codec_ul(ff_mxf_data_definition_uls, &source_track->sequence->data_definition_ul);
770 st->codec->codec_type = codec_ul->id;
772 source_package->descriptor = mxf_resolve_strong_ref(mxf, &source_package->descriptor_ref, AnyType);
773 if (source_package->descriptor) {
774 if (source_package->descriptor->type == MultipleDescriptor) {
775 for (j = 0; j < source_package->descriptor->sub_descriptors_count; j++) {
776 MXFDescriptor *sub_descriptor = mxf_resolve_strong_ref(mxf, &source_package->descriptor->sub_descriptors_refs[j], Descriptor);
778 if (!sub_descriptor) {
779 av_log(mxf->fc, AV_LOG_ERROR, "could not resolve sub descriptor strong ref\n");
782 if (sub_descriptor->linked_track_id == source_track->track_id) {
783 descriptor = sub_descriptor;
787 } else if (source_package->descriptor->type == Descriptor)
788 descriptor = source_package->descriptor;
791 av_log(mxf->fc, AV_LOG_INFO, "source track %d: stream %d, no descriptor found\n", source_track->track_id, st->index);
794 PRINT_KEY(mxf->fc, "essence codec ul", descriptor->essence_codec_ul);
795 PRINT_KEY(mxf->fc, "essence container ul", descriptor->essence_container_ul);
796 essence_container_ul = &descriptor->essence_container_ul;
797 /* HACK: replacing the original key with mxf_encrypted_essence_container
798 * is not allowed according to s429-6, try to find correct information anyway */
799 if (IS_KLV_KEY(essence_container_ul, mxf_encrypted_essence_container)) {
800 av_log(mxf->fc, AV_LOG_INFO, "broken encrypted mxf file\n");
801 for (k = 0; k < mxf->metadata_sets_count; k++) {
802 MXFMetadataSet *metadata = mxf->metadata_sets[k];
803 if (metadata->type == CryptoContext) {
804 essence_container_ul = &((MXFCryptoContext *)metadata)->source_container_ul;
809 /* TODO: drop PictureEssenceCoding and SoundEssenceCompression, only check EssenceContainer */
810 codec_ul = mxf_get_codec_ul(ff_mxf_codec_uls, &descriptor->essence_codec_ul);
811 st->codec->codec_id = codec_ul->id;
812 if (descriptor->extradata) {
813 st->codec->extradata = descriptor->extradata;
814 st->codec->extradata_size = descriptor->extradata_size;
816 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
817 container_ul = mxf_get_codec_ul(mxf_essence_container_uls, essence_container_ul);
818 if (st->codec->codec_id == CODEC_ID_NONE)
819 st->codec->codec_id = container_ul->id;
820 st->codec->width = descriptor->width;
821 st->codec->height = descriptor->height;
822 if (st->codec->codec_id == CODEC_ID_RAWVIDEO)
823 st->codec->pix_fmt = descriptor->pix_fmt;
824 st->need_parsing = AVSTREAM_PARSE_HEADERS;
825 } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
826 container_ul = mxf_get_codec_ul(mxf_essence_container_uls, essence_container_ul);
827 if (st->codec->codec_id == CODEC_ID_NONE)
828 st->codec->codec_id = container_ul->id;
829 st->codec->channels = descriptor->channels;
830 st->codec->bits_per_coded_sample = descriptor->bits_per_sample;
831 st->codec->sample_rate = descriptor->sample_rate.num / descriptor->sample_rate.den;
832 /* TODO: implement CODEC_ID_RAWAUDIO */
833 if (st->codec->codec_id == CODEC_ID_PCM_S16LE) {
834 if (descriptor->bits_per_sample == 24)
835 st->codec->codec_id = CODEC_ID_PCM_S24LE;
836 else if (descriptor->bits_per_sample == 32)
837 st->codec->codec_id = CODEC_ID_PCM_S32LE;
838 } else if (st->codec->codec_id == CODEC_ID_PCM_S16BE) {
839 if (descriptor->bits_per_sample == 24)
840 st->codec->codec_id = CODEC_ID_PCM_S24BE;
841 else if (descriptor->bits_per_sample == 32)
842 st->codec->codec_id = CODEC_ID_PCM_S32BE;
843 } else if (st->codec->codec_id == CODEC_ID_MP2) {
844 st->need_parsing = AVSTREAM_PARSE_FULL;
847 if (st->codec->codec_type != AVMEDIA_TYPE_DATA && (*essence_container_ul)[15] > 0x01) {
848 av_log(mxf->fc, AV_LOG_WARNING, "only frame wrapped mappings are correctly supported\n");
849 st->need_parsing = AVSTREAM_PARSE_FULL;
855 static const MXFMetadataReadTableEntry mxf_metadata_read_table[] = {
856 { { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x05,0x01,0x00 }, mxf_read_primer_pack },
857 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x18,0x00 }, mxf_read_content_storage, 0, AnyType },
858 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x37,0x00 }, mxf_read_source_package, sizeof(MXFPackage), SourcePackage },
859 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x36,0x00 }, mxf_read_material_package, sizeof(MXFPackage), MaterialPackage },
860 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x0F,0x00 }, mxf_read_sequence, sizeof(MXFSequence), Sequence },
861 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x11,0x00 }, mxf_read_source_clip, sizeof(MXFStructuralComponent), SourceClip },
862 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x44,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), MultipleDescriptor },
863 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x42,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* Generic Sound */
864 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x28,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* CDCI */
865 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x29,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* RGBA */
866 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* MPEG 2 Video */
867 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* Wave */
868 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* AES3 */
869 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x3A,0x00 }, mxf_read_track, sizeof(MXFTrack), Track }, /* Static Track */
870 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x3B,0x00 }, mxf_read_track, sizeof(MXFTrack), Track }, /* Generic Track */
871 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x04,0x01,0x02,0x02,0x00,0x00 }, mxf_read_cryptographic_context, sizeof(MXFCryptoContext), CryptoContext },
872 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x10,0x01,0x00 }, mxf_read_index_table_segment, sizeof(MXFIndexTableSegment), IndexTableSegment },
873 { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, NULL, 0, AnyType },
876 static int mxf_read_local_tags(MXFContext *mxf, KLVPacket *klv, MXFMetadataReadFunc *read_child, int ctx_size, enum MXFMetadataSetType type)
878 AVIOContext *pb = mxf->fc->pb;
879 MXFMetadataSet *ctx = ctx_size ? av_mallocz(ctx_size) : mxf;
880 uint64_t klv_end = avio_tell(pb) + klv->length;
884 while (avio_tell(pb) + 4 < klv_end) {
885 int tag = avio_rb16(pb);
886 int size = avio_rb16(pb); /* KLV specified by 0x53 */
887 uint64_t next = avio_tell(pb) + size;
890 av_dlog(mxf->fc, "local tag %#04x size %d\n", tag, size);
891 if (!size) { /* ignore empty tag, needed for some files with empty UMID tag */
892 av_log(mxf->fc, AV_LOG_ERROR, "local tag %#04x with 0 size\n", tag);
895 if (tag > 0x7FFF) { /* dynamic tag */
897 for (i = 0; i < mxf->local_tags_count; i++) {
898 int local_tag = AV_RB16(mxf->local_tags+i*18);
899 if (local_tag == tag) {
900 memcpy(uid, mxf->local_tags+i*18+2, 16);
901 av_dlog(mxf->fc, "local tag %#04x\n", local_tag);
902 PRINT_KEY(mxf->fc, "uid", uid);
906 if (ctx_size && tag == 0x3C0A)
907 avio_read(pb, ctx->uid, 16);
908 else if (read_child(ctx, pb, tag, size, uid) < 0)
911 avio_seek(pb, next, SEEK_SET);
913 if (ctx_size) ctx->type = type;
914 return ctx_size ? mxf_add_metadata_set(mxf, ctx) : 0;
917 static int mxf_read_header(AVFormatContext *s, AVFormatParameters *ap)
919 MXFContext *mxf = s->priv_data;
922 if (!mxf_read_sync(s->pb, mxf_header_partition_pack_key, 14)) {
923 av_log(s, AV_LOG_ERROR, "could not find header partition pack key\n");
926 avio_seek(s->pb, -14, SEEK_CUR);
928 while (!s->pb->eof_reached) {
929 const MXFMetadataReadTableEntry *metadata;
931 if (klv_read_packet(&klv, s->pb) < 0)
933 PRINT_KEY(s, "read header", klv.key);
934 av_dlog(s, "size %"PRIu64" offset %#"PRIx64"\n", klv.length, klv.offset);
935 if (IS_KLV_KEY(klv.key, mxf_encrypted_triplet_key) ||
936 IS_KLV_KEY(klv.key, mxf_essence_element_key)) {
937 /* FIXME avoid seek */
938 avio_seek(s->pb, klv.offset, SEEK_SET);
942 for (metadata = mxf_metadata_read_table; metadata->read; metadata++) {
943 if (IS_KLV_KEY(klv.key, metadata->key)) {
945 if (klv.key[5] == 0x53) {
946 res = mxf_read_local_tags(mxf, &klv, metadata->read, metadata->ctx_size, metadata->type);
948 res = metadata->read(mxf, s->pb, 0, 0, NULL);
950 av_log(s, AV_LOG_ERROR, "error reading header metadata\n");
957 avio_skip(s->pb, klv.length);
959 return mxf_parse_structural_metadata(mxf);
962 static int mxf_read_close(AVFormatContext *s)
964 MXFContext *mxf = s->priv_data;
967 av_freep(&mxf->packages_refs);
969 for (i = 0; i < s->nb_streams; i++)
970 s->streams[i]->priv_data = NULL;
972 for (i = 0; i < mxf->metadata_sets_count; i++) {
973 switch (mxf->metadata_sets[i]->type) {
974 case MultipleDescriptor:
975 av_freep(&((MXFDescriptor *)mxf->metadata_sets[i])->sub_descriptors_refs);
978 av_freep(&((MXFSequence *)mxf->metadata_sets[i])->structural_components_refs);
981 case MaterialPackage:
982 av_freep(&((MXFPackage *)mxf->metadata_sets[i])->tracks_refs);
987 av_freep(&mxf->metadata_sets[i]);
989 av_freep(&mxf->metadata_sets);
990 av_freep(&mxf->aesc);
991 av_freep(&mxf->local_tags);
995 static int mxf_probe(AVProbeData *p) {
996 uint8_t *bufp = p->buf;
997 uint8_t *end = p->buf + p->buf_size;
999 if (p->buf_size < sizeof(mxf_header_partition_pack_key))
1002 /* Must skip Run-In Sequence and search for MXF header partition pack key SMPTE 377M 5.5 */
1003 end -= sizeof(mxf_header_partition_pack_key);
1004 for (; bufp < end; bufp++) {
1005 if (IS_KLV_KEY(bufp, mxf_header_partition_pack_key))
1006 return AVPROBE_SCORE_MAX;
1011 /* rudimentary byte seek */
1012 /* XXX: use MXF Index */
1013 static int mxf_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
1015 AVStream *st = s->streams[stream_index];
1020 if (sample_time < 0)
1022 seconds = av_rescale(sample_time, st->time_base.num, st->time_base.den);
1023 avio_seek(s->pb, (s->bit_rate * seconds) >> 3, SEEK_SET);
1024 ff_update_cur_dts(s, st, sample_time);
1028 AVInputFormat ff_mxf_demuxer = {
1030 .long_name = NULL_IF_CONFIG_SMALL("Material eXchange Format"),
1031 .priv_data_size = sizeof(MXFContext),
1032 .read_probe = mxf_probe,
1033 .read_header = mxf_read_header,
1034 .read_packet = mxf_read_packet,
1035 .read_close = mxf_read_close,
1036 .read_seek = mxf_read_seek,