3 * Copyright (c) 2006 SmartJog S.A., Baptiste Coudurier <baptiste dot coudurier at smartjog dot com>
5 * This file is part of FFmpeg.
7 * FFmpeg 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 * FFmpeg 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 FFmpeg; 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 "libavcodec/bytestream.h"
55 enum MXFMetadataSetType type;
56 UID source_container_ul;
61 enum MXFMetadataSetType type;
62 UID source_package_uid;
63 UID data_definition_ul;
65 int64_t start_position;
67 } MXFStructuralComponent;
71 enum MXFMetadataSetType type;
72 UID data_definition_ul;
73 UID *structural_components_refs;
74 int structural_components_count;
80 enum MXFMetadataSetType type;
81 MXFSequence *sequence; /* mandatory, and only one */
84 uint8_t track_number[4];
90 enum MXFMetadataSetType type;
91 UID essence_container_ul;
93 AVRational sample_rate;
94 AVRational aspect_ratio;
99 UID *sub_descriptors_refs;
100 int sub_descriptors_count;
104 enum PixelFormat pix_fmt;
109 enum MXFMetadataSetType type;
110 } MXFIndexTableSegment;
114 enum MXFMetadataSetType type;
118 MXFDescriptor *descriptor; /* only one */
124 enum MXFMetadataSetType type;
130 MXFMetadataSet **metadata_sets;
131 int metadata_sets_count;
135 int local_tags_count;
138 enum MXFWrappingScheme {
143 typedef int MXFMetadataReadFunc(void *arg, AVIOContext *pb, int tag, int size, UID uid);
147 MXFMetadataReadFunc *read;
149 enum MXFMetadataSetType type;
150 } MXFMetadataReadTableEntry;
152 /* partial keys to match */
153 static const uint8_t mxf_header_partition_pack_key[] = { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02 };
154 static const uint8_t mxf_essence_element_key[] = { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01 };
155 static const uint8_t mxf_klv_key[] = { 0x06,0x0e,0x2b,0x34 };
156 /* complete keys to match */
157 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 };
158 static const uint8_t mxf_encrypted_triplet_key[] = { 0x06,0x0e,0x2b,0x34,0x02,0x04,0x01,0x07,0x0d,0x01,0x03,0x01,0x02,0x7e,0x01,0x00 };
159 static const uint8_t mxf_encrypted_essence_container[] = { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x0d,0x01,0x03,0x01,0x02,0x0b,0x01,0x00 };
160 static const uint8_t mxf_sony_mpeg4_extradata[] = { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0e,0x06,0x06,0x02,0x02,0x01,0x00,0x00 };
162 #define IS_KLV_KEY(x, y) (!memcmp(x, y, sizeof(y)))
164 static int64_t klv_decode_ber_length(AVIOContext *pb)
166 uint64_t size = avio_r8(pb);
167 if (size & 0x80) { /* long form */
168 int bytes_num = size & 0x7f;
169 /* SMPTE 379M 5.3.4 guarantee that bytes_num must not exceed 8 bytes */
174 size = size << 8 | avio_r8(pb);
179 static int mxf_read_sync(AVIOContext *pb, const uint8_t *key, unsigned size)
182 for (i = 0; i < size && !url_feof(pb); i++) {
186 else if (b != key[i])
192 static int klv_read_packet(KLVPacket *klv, AVIOContext *pb)
194 if (!mxf_read_sync(pb, mxf_klv_key, 4))
196 klv->offset = avio_tell(pb) - 4;
197 memcpy(klv->key, mxf_klv_key, 4);
198 avio_read(pb, klv->key + 4, 12);
199 klv->length = klv_decode_ber_length(pb);
200 return klv->length == -1 ? -1 : 0;
203 static int mxf_get_stream_index(AVFormatContext *s, KLVPacket *klv)
207 for (i = 0; i < s->nb_streams; i++) {
208 MXFTrack *track = s->streams[i]->priv_data;
210 if (!memcmp(klv->key + sizeof(mxf_essence_element_key), track->track_number, sizeof(track->track_number)))
213 /* return 0 if only one stream, for OP Atom files with 0 as track number */
214 return s->nb_streams == 1 ? 0 : -1;
217 /* XXX: use AVBitStreamFilter */
218 static int mxf_get_d10_aes3_packet(AVIOContext *pb, AVStream *st, AVPacket *pkt, int64_t length)
220 const uint8_t *buf_ptr, *end_ptr;
224 if (length > 61444) /* worst case PAL 1920 samples 8 channels */
226 av_new_packet(pkt, length);
227 avio_read(pb, pkt->data, length);
228 data_ptr = pkt->data;
229 end_ptr = pkt->data + length;
230 buf_ptr = pkt->data + 4; /* skip SMPTE 331M header */
231 for (; buf_ptr < end_ptr; ) {
232 for (i = 0; i < st->codec->channels; i++) {
233 uint32_t sample = bytestream_get_le32(&buf_ptr);
234 if (st->codec->bits_per_coded_sample == 24)
235 bytestream_put_le24(&data_ptr, (sample >> 4) & 0xffffff);
237 bytestream_put_le16(&data_ptr, (sample >> 12) & 0xffff);
239 buf_ptr += 32 - st->codec->channels*4; // always 8 channels stored SMPTE 331M
241 pkt->size = data_ptr - pkt->data;
245 static int mxf_decrypt_triplet(AVFormatContext *s, AVPacket *pkt, KLVPacket *klv)
247 static const uint8_t checkv[16] = {0x43, 0x48, 0x55, 0x4b, 0x43, 0x48, 0x55, 0x4b, 0x43, 0x48, 0x55, 0x4b, 0x43, 0x48, 0x55, 0x4b};
248 MXFContext *mxf = s->priv_data;
249 AVIOContext *pb = s->pb;
250 int64_t end = avio_tell(pb) + klv->length;
253 uint64_t plaintext_size;
258 if (!mxf->aesc && s->key && s->keylen == 16) {
259 mxf->aesc = av_malloc(av_aes_size);
262 av_aes_init(mxf->aesc, s->key, 128, 1);
265 avio_skip(pb, klv_decode_ber_length(pb));
267 klv_decode_ber_length(pb);
268 plaintext_size = avio_rb64(pb);
270 klv_decode_ber_length(pb);
271 avio_read(pb, klv->key, 16);
272 if (!IS_KLV_KEY(klv, mxf_essence_element_key))
274 index = mxf_get_stream_index(s, klv);
278 klv_decode_ber_length(pb);
279 orig_size = avio_rb64(pb);
280 if (orig_size < plaintext_size)
283 size = klv_decode_ber_length(pb);
284 if (size < 32 || size - 32 < orig_size)
286 avio_read(pb, ivec, 16);
287 avio_read(pb, tmpbuf, 16);
289 av_aes_crypt(mxf->aesc, tmpbuf, tmpbuf, 1, ivec, 1);
290 if (memcmp(tmpbuf, checkv, 16))
291 av_log(s, AV_LOG_ERROR, "probably incorrect decryption key\n");
293 av_get_packet(pb, pkt, size);
294 size -= plaintext_size;
296 av_aes_crypt(mxf->aesc, &pkt->data[plaintext_size],
297 &pkt->data[plaintext_size], size >> 4, ivec, 1);
298 pkt->size = orig_size;
299 pkt->stream_index = index;
300 avio_skip(pb, end - avio_tell(pb));
304 static int mxf_read_packet(AVFormatContext *s, AVPacket *pkt)
308 while (!url_feof(s->pb)) {
309 if (klv_read_packet(&klv, s->pb) < 0)
311 PRINT_KEY(s, "read packet", klv.key);
312 av_dlog(s, "size %lld offset %#llx\n", klv.length, klv.offset);
313 if (IS_KLV_KEY(klv.key, mxf_encrypted_triplet_key)) {
314 int res = mxf_decrypt_triplet(s, pkt, &klv);
316 av_log(s, AV_LOG_ERROR, "invalid encoded triplet\n");
321 if (IS_KLV_KEY(klv.key, mxf_essence_element_key)) {
322 int index = mxf_get_stream_index(s, &klv);
324 av_log(s, AV_LOG_ERROR, "error getting stream index %d\n", AV_RB32(klv.key+12));
327 if (s->streams[index]->discard == AVDISCARD_ALL)
329 /* check for 8 channels AES3 element */
330 if (klv.key[12] == 0x06 && klv.key[13] == 0x01 && klv.key[14] == 0x10) {
331 if (mxf_get_d10_aes3_packet(s->pb, s->streams[index], pkt, klv.length) < 0) {
332 av_log(s, AV_LOG_ERROR, "error reading D-10 aes3 frame\n");
336 av_get_packet(s->pb, pkt, klv.length);
337 pkt->stream_index = index;
338 pkt->pos = klv.offset;
342 avio_skip(s->pb, klv.length);
347 static int mxf_read_primer_pack(void *arg, AVIOContext *pb, int tag, int size, UID uid)
349 MXFContext *mxf = arg;
350 int item_num = avio_rb32(pb);
351 int item_len = avio_rb32(pb);
353 if (item_len != 18) {
354 av_log(mxf->fc, AV_LOG_ERROR, "unsupported primer pack item length\n");
357 if (item_num > UINT_MAX / item_len)
359 mxf->local_tags_count = item_num;
360 mxf->local_tags = av_malloc(item_num*item_len);
361 if (!mxf->local_tags)
363 avio_read(pb, mxf->local_tags, item_num*item_len);
367 static int mxf_add_metadata_set(MXFContext *mxf, void *metadata_set)
369 if (mxf->metadata_sets_count+1 >= UINT_MAX / sizeof(*mxf->metadata_sets))
370 return AVERROR(ENOMEM);
371 mxf->metadata_sets = av_realloc(mxf->metadata_sets, (mxf->metadata_sets_count + 1) * sizeof(*mxf->metadata_sets));
372 if (!mxf->metadata_sets)
374 mxf->metadata_sets[mxf->metadata_sets_count] = metadata_set;
375 mxf->metadata_sets_count++;
379 static int mxf_read_cryptographic_context(void *arg, AVIOContext *pb, int tag, int size, UID uid)
381 MXFCryptoContext *cryptocontext = arg;
384 if (IS_KLV_KEY(uid, mxf_crypto_source_container_ul))
385 avio_read(pb, cryptocontext->source_container_ul, 16);
389 static int mxf_read_content_storage(void *arg, AVIOContext *pb, int tag, int size, UID uid)
391 MXFContext *mxf = arg;
394 mxf->packages_count = avio_rb32(pb);
395 if (mxf->packages_count >= UINT_MAX / sizeof(UID))
397 mxf->packages_refs = av_malloc(mxf->packages_count * sizeof(UID));
398 if (!mxf->packages_refs)
400 avio_skip(pb, 4); /* useless size of objects, always 16 according to specs */
401 avio_read(pb, (uint8_t *)mxf->packages_refs, mxf->packages_count * sizeof(UID));
407 static int mxf_read_source_clip(void *arg, AVIOContext *pb, int tag, int size, UID uid)
409 MXFStructuralComponent *source_clip = arg;
412 source_clip->duration = avio_rb64(pb);
415 source_clip->start_position = avio_rb64(pb);
418 /* UMID, only get last 16 bytes */
420 avio_read(pb, source_clip->source_package_uid, 16);
423 source_clip->source_track_id = avio_rb32(pb);
429 static int mxf_read_material_package(void *arg, AVIOContext *pb, int tag, int size, UID uid)
431 MXFPackage *package = arg;
434 package->tracks_count = avio_rb32(pb);
435 if (package->tracks_count >= UINT_MAX / sizeof(UID))
437 package->tracks_refs = av_malloc(package->tracks_count * sizeof(UID));
438 if (!package->tracks_refs)
440 avio_skip(pb, 4); /* useless size of objects, always 16 according to specs */
441 avio_read(pb, (uint8_t *)package->tracks_refs, package->tracks_count * sizeof(UID));
447 static int mxf_read_track(void *arg, AVIOContext *pb, int tag, int size, UID uid)
449 MXFTrack *track = arg;
452 track->track_id = avio_rb32(pb);
455 avio_read(pb, track->track_number, 4);
458 track->edit_rate.den = avio_rb32(pb);
459 track->edit_rate.num = avio_rb32(pb);
462 avio_read(pb, track->sequence_ref, 16);
468 static int mxf_read_sequence(void *arg, AVIOContext *pb, int tag, int size, UID uid)
470 MXFSequence *sequence = arg;
473 sequence->duration = avio_rb64(pb);
476 avio_read(pb, sequence->data_definition_ul, 16);
479 sequence->structural_components_count = avio_rb32(pb);
480 if (sequence->structural_components_count >= UINT_MAX / sizeof(UID))
482 sequence->structural_components_refs = av_malloc(sequence->structural_components_count * sizeof(UID));
483 if (!sequence->structural_components_refs)
485 avio_skip(pb, 4); /* useless size of objects, always 16 according to specs */
486 avio_read(pb, (uint8_t *)sequence->structural_components_refs, sequence->structural_components_count * sizeof(UID));
492 static int mxf_read_source_package(void *arg, AVIOContext *pb, int tag, int size, UID uid)
494 MXFPackage *package = arg;
497 package->tracks_count = avio_rb32(pb);
498 if (package->tracks_count >= UINT_MAX / sizeof(UID))
500 package->tracks_refs = av_malloc(package->tracks_count * sizeof(UID));
501 if (!package->tracks_refs)
503 avio_skip(pb, 4); /* useless size of objects, always 16 according to specs */
504 avio_read(pb, (uint8_t *)package->tracks_refs, package->tracks_count * sizeof(UID));
507 /* UMID, only get last 16 bytes */
509 avio_read(pb, package->package_uid, 16);
512 avio_read(pb, package->descriptor_ref, 16);
518 static int mxf_read_index_table_segment(void *arg, AVIOContext *pb, int tag, int size, UID uid)
521 case 0x3F05: av_dlog(NULL, "EditUnitByteCount %d\n", avio_rb32(pb)); break;
522 case 0x3F06: av_dlog(NULL, "IndexSID %d\n", avio_rb32(pb)); break;
523 case 0x3F07: av_dlog(NULL, "BodySID %d\n", avio_rb32(pb)); break;
524 case 0x3F0B: av_dlog(NULL, "IndexEditRate %d/%d\n", avio_rb32(pb), avio_rb32(pb)); break;
525 case 0x3F0C: av_dlog(NULL, "IndexStartPosition %lld\n", avio_rb64(pb)); break;
526 case 0x3F0D: av_dlog(NULL, "IndexDuration %lld\n", avio_rb64(pb)); break;
531 static void mxf_read_pixel_layout(AVIOContext *pb, MXFDescriptor *descriptor)
533 int code, value, ofs = 0;
534 char layout[16] = {0};
539 av_dlog(NULL, "pixel layout: code %#x\n", code);
542 layout[ofs++] = code;
543 layout[ofs++] = value;
545 } while (code != 0); /* SMPTE 377M E.2.46 */
547 ff_mxf_decode_pixel_layout(layout, &descriptor->pix_fmt);
550 static int mxf_read_generic_descriptor(void *arg, AVIOContext *pb, int tag, int size, UID uid)
552 MXFDescriptor *descriptor = arg;
555 descriptor->sub_descriptors_count = avio_rb32(pb);
556 if (descriptor->sub_descriptors_count >= UINT_MAX / sizeof(UID))
558 descriptor->sub_descriptors_refs = av_malloc(descriptor->sub_descriptors_count * sizeof(UID));
559 if (!descriptor->sub_descriptors_refs)
561 avio_skip(pb, 4); /* useless size of objects, always 16 according to specs */
562 avio_read(pb, (uint8_t *)descriptor->sub_descriptors_refs, descriptor->sub_descriptors_count * sizeof(UID));
565 avio_read(pb, descriptor->essence_container_ul, 16);
568 descriptor->linked_track_id = avio_rb32(pb);
570 case 0x3201: /* PictureEssenceCoding */
571 avio_read(pb, descriptor->essence_codec_ul, 16);
574 descriptor->width = avio_rb32(pb);
577 descriptor->height = avio_rb32(pb);
580 descriptor->aspect_ratio.num = avio_rb32(pb);
581 descriptor->aspect_ratio.den = avio_rb32(pb);
584 descriptor->sample_rate.num = avio_rb32(pb);
585 descriptor->sample_rate.den = avio_rb32(pb);
587 case 0x3D06: /* SoundEssenceCompression */
588 avio_read(pb, descriptor->essence_codec_ul, 16);
591 descriptor->channels = avio_rb32(pb);
594 descriptor->bits_per_sample = avio_rb32(pb);
597 mxf_read_pixel_layout(pb, descriptor);
600 /* Private uid used by SONY C0023S01.mxf */
601 if (IS_KLV_KEY(uid, mxf_sony_mpeg4_extradata)) {
602 descriptor->extradata = av_malloc(size);
603 if (!descriptor->extradata)
605 descriptor->extradata_size = size;
606 avio_read(pb, descriptor->extradata, size);
614 * Match an uid independently of the version byte and up to len common bytes
617 static int mxf_match_uid(const UID key, const UID uid, int len)
620 for (i = 0; i < len; i++) {
621 if (i != 7 && key[i] != uid[i])
627 static const MXFCodecUL *mxf_get_codec_ul(const MXFCodecUL *uls, UID *uid)
629 while (uls->uid[0]) {
630 if(mxf_match_uid(uls->uid, *uid, uls->matching_len))
637 static void *mxf_resolve_strong_ref(MXFContext *mxf, UID *strong_ref, enum MXFMetadataSetType type)
643 for (i = 0; i < mxf->metadata_sets_count; i++) {
644 if (!memcmp(*strong_ref, mxf->metadata_sets[i]->uid, 16) &&
645 (type == AnyType || mxf->metadata_sets[i]->type == type)) {
646 return mxf->metadata_sets[i];
652 static const MXFCodecUL mxf_essence_container_uls[] = {
653 // video essence container uls
654 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x60,0x01 }, 14, CODEC_ID_MPEG2VIDEO }, /* MPEG-ES Frame wrapped */
655 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x41,0x01 }, 14, CODEC_ID_DVVIDEO }, /* DV 625 25mbps */
656 // sound essence container uls
657 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x01,0x00 }, 14, CODEC_ID_PCM_S16LE }, /* BWF Frame wrapped */
658 { { 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 */
659 { { 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 */
660 { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, CODEC_ID_NONE },
663 static int mxf_parse_structural_metadata(MXFContext *mxf)
665 MXFPackage *material_package = NULL;
666 MXFPackage *temp_package = NULL;
669 av_dlog(mxf->fc, "metadata sets count %d\n", mxf->metadata_sets_count);
670 /* TODO: handle multiple material packages (OP3x) */
671 for (i = 0; i < mxf->packages_count; i++) {
672 material_package = mxf_resolve_strong_ref(mxf, &mxf->packages_refs[i], MaterialPackage);
673 if (material_package) break;
675 if (!material_package) {
676 av_log(mxf->fc, AV_LOG_ERROR, "no material package found\n");
680 for (i = 0; i < material_package->tracks_count; i++) {
681 MXFPackage *source_package = NULL;
682 MXFTrack *material_track = NULL;
683 MXFTrack *source_track = NULL;
684 MXFTrack *temp_track = NULL;
685 MXFDescriptor *descriptor = NULL;
686 MXFStructuralComponent *component = NULL;
687 UID *essence_container_ul = NULL;
688 const MXFCodecUL *codec_ul = NULL;
689 const MXFCodecUL *container_ul = NULL;
692 if (!(material_track = mxf_resolve_strong_ref(mxf, &material_package->tracks_refs[i], Track))) {
693 av_log(mxf->fc, AV_LOG_ERROR, "could not resolve material track strong ref\n");
697 if (!(material_track->sequence = mxf_resolve_strong_ref(mxf, &material_track->sequence_ref, Sequence))) {
698 av_log(mxf->fc, AV_LOG_ERROR, "could not resolve material track sequence strong ref\n");
702 /* TODO: handle multiple source clips */
703 for (j = 0; j < material_track->sequence->structural_components_count; j++) {
704 /* TODO: handle timecode component */
705 component = mxf_resolve_strong_ref(mxf, &material_track->sequence->structural_components_refs[j], SourceClip);
709 for (k = 0; k < mxf->packages_count; k++) {
710 temp_package = mxf_resolve_strong_ref(mxf, &mxf->packages_refs[k], SourcePackage);
713 if (!memcmp(temp_package->package_uid, component->source_package_uid, 16)) {
714 source_package = temp_package;
718 if (!source_package) {
719 av_log(mxf->fc, AV_LOG_ERROR, "material track %d: no corresponding source package found\n", material_track->track_id);
722 for (k = 0; k < source_package->tracks_count; k++) {
723 if (!(temp_track = mxf_resolve_strong_ref(mxf, &source_package->tracks_refs[k], Track))) {
724 av_log(mxf->fc, AV_LOG_ERROR, "could not resolve source track strong ref\n");
727 if (temp_track->track_id == component->source_track_id) {
728 source_track = temp_track;
733 av_log(mxf->fc, AV_LOG_ERROR, "material track %d: no corresponding source track found\n", material_track->track_id);
740 st = av_new_stream(mxf->fc, source_track->track_id);
742 av_log(mxf->fc, AV_LOG_ERROR, "could not allocate stream\n");
745 st->priv_data = source_track;
746 st->duration = component->duration;
747 if (st->duration == -1)
748 st->duration = AV_NOPTS_VALUE;
749 st->start_time = component->start_position;
750 av_set_pts_info(st, 64, material_track->edit_rate.num, material_track->edit_rate.den);
752 if (!(source_track->sequence = mxf_resolve_strong_ref(mxf, &source_track->sequence_ref, Sequence))) {
753 av_log(mxf->fc, AV_LOG_ERROR, "could not resolve source track sequence strong ref\n");
757 PRINT_KEY(mxf->fc, "data definition ul", source_track->sequence->data_definition_ul);
758 codec_ul = mxf_get_codec_ul(ff_mxf_data_definition_uls, &source_track->sequence->data_definition_ul);
759 st->codec->codec_type = codec_ul->id;
761 source_package->descriptor = mxf_resolve_strong_ref(mxf, &source_package->descriptor_ref, AnyType);
762 if (source_package->descriptor) {
763 if (source_package->descriptor->type == MultipleDescriptor) {
764 for (j = 0; j < source_package->descriptor->sub_descriptors_count; j++) {
765 MXFDescriptor *sub_descriptor = mxf_resolve_strong_ref(mxf, &source_package->descriptor->sub_descriptors_refs[j], Descriptor);
767 if (!sub_descriptor) {
768 av_log(mxf->fc, AV_LOG_ERROR, "could not resolve sub descriptor strong ref\n");
771 if (sub_descriptor->linked_track_id == source_track->track_id) {
772 descriptor = sub_descriptor;
776 } else if (source_package->descriptor->type == Descriptor)
777 descriptor = source_package->descriptor;
780 av_log(mxf->fc, AV_LOG_INFO, "source track %d: stream %d, no descriptor found\n", source_track->track_id, st->index);
783 PRINT_KEY(mxf->fc, "essence codec ul", descriptor->essence_codec_ul);
784 PRINT_KEY(mxf->fc, "essence container ul", descriptor->essence_container_ul);
785 essence_container_ul = &descriptor->essence_container_ul;
786 /* HACK: replacing the original key with mxf_encrypted_essence_container
787 * is not allowed according to s429-6, try to find correct information anyway */
788 if (IS_KLV_KEY(essence_container_ul, mxf_encrypted_essence_container)) {
789 av_log(mxf->fc, AV_LOG_INFO, "broken encrypted mxf file\n");
790 for (k = 0; k < mxf->metadata_sets_count; k++) {
791 MXFMetadataSet *metadata = mxf->metadata_sets[k];
792 if (metadata->type == CryptoContext) {
793 essence_container_ul = &((MXFCryptoContext *)metadata)->source_container_ul;
798 /* TODO: drop PictureEssenceCoding and SoundEssenceCompression, only check EssenceContainer */
799 codec_ul = mxf_get_codec_ul(ff_mxf_codec_uls, &descriptor->essence_codec_ul);
800 st->codec->codec_id = codec_ul->id;
801 if (descriptor->extradata) {
802 st->codec->extradata = descriptor->extradata;
803 st->codec->extradata_size = descriptor->extradata_size;
805 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
806 container_ul = mxf_get_codec_ul(mxf_essence_container_uls, essence_container_ul);
807 if (st->codec->codec_id == CODEC_ID_NONE)
808 st->codec->codec_id = container_ul->id;
809 st->codec->width = descriptor->width;
810 st->codec->height = descriptor->height;
811 if (st->codec->codec_id == CODEC_ID_RAWVIDEO)
812 st->codec->pix_fmt = descriptor->pix_fmt;
813 st->need_parsing = AVSTREAM_PARSE_HEADERS;
814 } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
815 container_ul = mxf_get_codec_ul(mxf_essence_container_uls, essence_container_ul);
816 if (st->codec->codec_id == CODEC_ID_NONE)
817 st->codec->codec_id = container_ul->id;
818 st->codec->channels = descriptor->channels;
819 st->codec->bits_per_coded_sample = descriptor->bits_per_sample;
820 st->codec->sample_rate = descriptor->sample_rate.num / descriptor->sample_rate.den;
821 /* TODO: implement CODEC_ID_RAWAUDIO */
822 if (st->codec->codec_id == CODEC_ID_PCM_S16LE) {
823 if (descriptor->bits_per_sample == 24)
824 st->codec->codec_id = CODEC_ID_PCM_S24LE;
825 else if (descriptor->bits_per_sample == 32)
826 st->codec->codec_id = CODEC_ID_PCM_S32LE;
827 } else if (st->codec->codec_id == CODEC_ID_PCM_S16BE) {
828 if (descriptor->bits_per_sample == 24)
829 st->codec->codec_id = CODEC_ID_PCM_S24BE;
830 else if (descriptor->bits_per_sample == 32)
831 st->codec->codec_id = CODEC_ID_PCM_S32BE;
832 } else if (st->codec->codec_id == CODEC_ID_MP2) {
833 st->need_parsing = AVSTREAM_PARSE_FULL;
836 if (st->codec->codec_type != AVMEDIA_TYPE_DATA && (*essence_container_ul)[15] > 0x01) {
837 av_log(mxf->fc, AV_LOG_WARNING, "only frame wrapped mappings are correctly supported\n");
838 st->need_parsing = AVSTREAM_PARSE_FULL;
844 static const MXFMetadataReadTableEntry mxf_metadata_read_table[] = {
845 { { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x05,0x01,0x00 }, mxf_read_primer_pack },
846 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x18,0x00 }, mxf_read_content_storage, 0, AnyType },
847 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x37,0x00 }, mxf_read_source_package, sizeof(MXFPackage), SourcePackage },
848 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x36,0x00 }, mxf_read_material_package, sizeof(MXFPackage), MaterialPackage },
849 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x0F,0x00 }, mxf_read_sequence, sizeof(MXFSequence), Sequence },
850 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x11,0x00 }, mxf_read_source_clip, sizeof(MXFStructuralComponent), SourceClip },
851 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x44,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), MultipleDescriptor },
852 { { 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 */
853 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x28,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* CDCI */
854 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x29,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* RGBA */
855 { { 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 */
856 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* Wave */
857 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* AES3 */
858 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x3A,0x00 }, mxf_read_track, sizeof(MXFTrack), Track }, /* Static Track */
859 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x3B,0x00 }, mxf_read_track, sizeof(MXFTrack), Track }, /* Generic Track */
860 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x04,0x01,0x02,0x02,0x00,0x00 }, mxf_read_cryptographic_context, sizeof(MXFCryptoContext), CryptoContext },
861 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x10,0x01,0x00 }, mxf_read_index_table_segment, sizeof(MXFIndexTableSegment), IndexTableSegment },
862 { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, NULL, 0, AnyType },
865 static int mxf_read_local_tags(MXFContext *mxf, KLVPacket *klv, MXFMetadataReadFunc *read_child, int ctx_size, enum MXFMetadataSetType type)
867 AVIOContext *pb = mxf->fc->pb;
868 MXFMetadataSet *ctx = ctx_size ? av_mallocz(ctx_size) : mxf;
869 uint64_t klv_end = avio_tell(pb) + klv->length;
873 while (avio_tell(pb) + 4 < klv_end) {
874 int tag = avio_rb16(pb);
875 int size = avio_rb16(pb); /* KLV specified by 0x53 */
876 uint64_t next = avio_tell(pb) + size;
879 av_dlog(mxf->fc, "local tag %#04x size %d\n", tag, size);
880 if (!size) { /* ignore empty tag, needed for some files with empty UMID tag */
881 av_log(mxf->fc, AV_LOG_ERROR, "local tag %#04x with 0 size\n", tag);
884 if (tag > 0x7FFF) { /* dynamic tag */
886 for (i = 0; i < mxf->local_tags_count; i++) {
887 int local_tag = AV_RB16(mxf->local_tags+i*18);
888 if (local_tag == tag) {
889 memcpy(uid, mxf->local_tags+i*18+2, 16);
890 av_dlog(mxf->fc, "local tag %#04x\n", local_tag);
891 PRINT_KEY(mxf->fc, "uid", uid);
895 if (ctx_size && tag == 0x3C0A)
896 avio_read(pb, ctx->uid, 16);
897 else if (read_child(ctx, pb, tag, size, uid) < 0)
900 avio_seek(pb, next, SEEK_SET);
902 if (ctx_size) ctx->type = type;
903 return ctx_size ? mxf_add_metadata_set(mxf, ctx) : 0;
906 static int mxf_read_header(AVFormatContext *s, AVFormatParameters *ap)
908 MXFContext *mxf = s->priv_data;
911 if (!mxf_read_sync(s->pb, mxf_header_partition_pack_key, 14)) {
912 av_log(s, AV_LOG_ERROR, "could not find header partition pack key\n");
915 avio_seek(s->pb, -14, SEEK_CUR);
917 while (!url_feof(s->pb)) {
918 const MXFMetadataReadTableEntry *metadata;
920 if (klv_read_packet(&klv, s->pb) < 0)
922 PRINT_KEY(s, "read header", klv.key);
923 av_dlog(s, "size %lld offset %#llx\n", klv.length, klv.offset);
924 if (IS_KLV_KEY(klv.key, mxf_encrypted_triplet_key) ||
925 IS_KLV_KEY(klv.key, mxf_essence_element_key)) {
926 /* FIXME avoid seek */
927 avio_seek(s->pb, klv.offset, SEEK_SET);
931 for (metadata = mxf_metadata_read_table; metadata->read; metadata++) {
932 if (IS_KLV_KEY(klv.key, metadata->key)) {
934 if (klv.key[5] == 0x53) {
935 res = mxf_read_local_tags(mxf, &klv, metadata->read, metadata->ctx_size, metadata->type);
937 res = metadata->read(mxf, s->pb, 0, 0, NULL);
939 av_log(s, AV_LOG_ERROR, "error reading header metadata\n");
946 avio_skip(s->pb, klv.length);
948 return mxf_parse_structural_metadata(mxf);
951 static int mxf_read_close(AVFormatContext *s)
953 MXFContext *mxf = s->priv_data;
956 av_freep(&mxf->packages_refs);
958 for (i = 0; i < s->nb_streams; i++)
959 s->streams[i]->priv_data = NULL;
961 for (i = 0; i < mxf->metadata_sets_count; i++) {
962 switch (mxf->metadata_sets[i]->type) {
963 case MultipleDescriptor:
964 av_freep(&((MXFDescriptor *)mxf->metadata_sets[i])->sub_descriptors_refs);
967 av_freep(&((MXFSequence *)mxf->metadata_sets[i])->structural_components_refs);
970 case MaterialPackage:
971 av_freep(&((MXFPackage *)mxf->metadata_sets[i])->tracks_refs);
976 av_freep(&mxf->metadata_sets[i]);
978 av_freep(&mxf->metadata_sets);
979 av_freep(&mxf->aesc);
980 av_freep(&mxf->local_tags);
984 static int mxf_probe(AVProbeData *p) {
985 uint8_t *bufp = p->buf;
986 uint8_t *end = p->buf + p->buf_size;
988 if (p->buf_size < sizeof(mxf_header_partition_pack_key))
991 /* Must skip Run-In Sequence and search for MXF header partition pack key SMPTE 377M 5.5 */
992 end -= sizeof(mxf_header_partition_pack_key);
993 for (; bufp < end; bufp++) {
994 if (IS_KLV_KEY(bufp, mxf_header_partition_pack_key))
995 return AVPROBE_SCORE_MAX;
1000 /* rudimentary byte seek */
1001 /* XXX: use MXF Index */
1002 static int mxf_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
1004 AVStream *st = s->streams[stream_index];
1009 if (sample_time < 0)
1011 seconds = av_rescale(sample_time, st->time_base.num, st->time_base.den);
1012 avio_seek(s->pb, (s->bit_rate * seconds) >> 3, SEEK_SET);
1013 av_update_cur_dts(s, st, sample_time);
1017 AVInputFormat ff_mxf_demuxer = {
1019 NULL_IF_CONFIG_SMALL("Material eXchange Format"),