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"
56 enum MXFMetadataSetType type;
57 UID source_container_ul;
62 enum MXFMetadataSetType type;
63 UID source_package_uid;
64 UID data_definition_ul;
66 int64_t start_position;
68 } MXFStructuralComponent;
72 enum MXFMetadataSetType type;
73 UID data_definition_ul;
74 UID *structural_components_refs;
75 int structural_components_count;
81 enum MXFMetadataSetType type;
82 MXFSequence *sequence; /* mandatory, and only one */
85 uint8_t track_number[4];
91 enum MXFMetadataSetType type;
92 UID essence_container_ul;
94 AVRational sample_rate;
95 AVRational aspect_ratio;
100 UID *sub_descriptors_refs;
101 int sub_descriptors_count;
105 enum PixelFormat pix_fmt;
110 enum MXFMetadataSetType type;
111 } MXFIndexTableSegment;
115 enum MXFMetadataSetType type;
119 MXFDescriptor *descriptor; /* only one */
125 enum MXFMetadataSetType type;
131 MXFMetadataSet **metadata_sets;
132 int metadata_sets_count;
136 int local_tags_count;
139 enum MXFWrappingScheme {
144 typedef int MXFMetadataReadFunc(void *arg, AVIOContext *pb, int tag, int size, UID uid);
148 MXFMetadataReadFunc *read;
150 enum MXFMetadataSetType type;
151 } MXFMetadataReadTableEntry;
153 /* partial keys to match */
154 static const uint8_t mxf_header_partition_pack_key[] = { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02 };
155 static const uint8_t mxf_essence_element_key[] = { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01 };
156 static const uint8_t mxf_klv_key[] = { 0x06,0x0e,0x2b,0x34 };
157 /* complete keys to match */
158 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 };
159 static const uint8_t mxf_encrypted_triplet_key[] = { 0x06,0x0e,0x2b,0x34,0x02,0x04,0x01,0x07,0x0d,0x01,0x03,0x01,0x02,0x7e,0x01,0x00 };
160 static const uint8_t mxf_encrypted_essence_container[] = { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x0d,0x01,0x03,0x01,0x02,0x0b,0x01,0x00 };
161 static const uint8_t mxf_sony_mpeg4_extradata[] = { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0e,0x06,0x06,0x02,0x02,0x01,0x00,0x00 };
163 #define IS_KLV_KEY(x, y) (!memcmp(x, y, sizeof(y)))
165 static int64_t klv_decode_ber_length(AVIOContext *pb)
167 uint64_t size = avio_r8(pb);
168 if (size & 0x80) { /* long form */
169 int bytes_num = size & 0x7f;
170 /* SMPTE 379M 5.3.4 guarantee that bytes_num must not exceed 8 bytes */
175 size = size << 8 | avio_r8(pb);
180 static int mxf_read_sync(AVIOContext *pb, const uint8_t *key, unsigned size)
183 for (i = 0; i < size && !pb->eof_reached; i++) {
187 else if (b != key[i])
193 static int klv_read_packet(KLVPacket *klv, AVIOContext *pb)
195 if (!mxf_read_sync(pb, mxf_klv_key, 4))
197 klv->offset = avio_tell(pb) - 4;
198 memcpy(klv->key, mxf_klv_key, 4);
199 avio_read(pb, klv->key + 4, 12);
200 klv->length = klv_decode_ber_length(pb);
201 return klv->length == -1 ? -1 : 0;
204 static int mxf_get_stream_index(AVFormatContext *s, KLVPacket *klv)
208 for (i = 0; i < s->nb_streams; i++) {
209 MXFTrack *track = s->streams[i]->priv_data;
211 if (!memcmp(klv->key + sizeof(mxf_essence_element_key), track->track_number, sizeof(track->track_number)))
214 /* return 0 if only one stream, for OP Atom files with 0 as track number */
215 return s->nb_streams == 1 ? 0 : -1;
218 /* XXX: use AVBitStreamFilter */
219 static int mxf_get_d10_aes3_packet(AVIOContext *pb, AVStream *st, AVPacket *pkt, int64_t length)
221 const uint8_t *buf_ptr, *end_ptr;
225 if (length > 61444) /* worst case PAL 1920 samples 8 channels */
227 length = av_get_packet(pb, pkt, length);
230 data_ptr = pkt->data;
231 end_ptr = pkt->data + length;
232 buf_ptr = pkt->data + 4; /* skip SMPTE 331M header */
233 for (; buf_ptr + st->codec->channels*4 < end_ptr; ) {
234 for (i = 0; i < st->codec->channels; i++) {
235 uint32_t sample = bytestream_get_le32(&buf_ptr);
236 if (st->codec->bits_per_coded_sample == 24)
237 bytestream_put_le24(&data_ptr, (sample >> 4) & 0xffffff);
239 bytestream_put_le16(&data_ptr, (sample >> 12) & 0xffff);
241 buf_ptr += 32 - st->codec->channels*4; // always 8 channels stored SMPTE 331M
243 av_shrink_packet(pkt, data_ptr - pkt->data);
247 static int mxf_decrypt_triplet(AVFormatContext *s, AVPacket *pkt, KLVPacket *klv)
249 static const uint8_t checkv[16] = {0x43, 0x48, 0x55, 0x4b, 0x43, 0x48, 0x55, 0x4b, 0x43, 0x48, 0x55, 0x4b, 0x43, 0x48, 0x55, 0x4b};
250 MXFContext *mxf = s->priv_data;
251 AVIOContext *pb = s->pb;
252 int64_t end = avio_tell(pb) + klv->length;
255 uint64_t plaintext_size;
260 if (!mxf->aesc && s->key && s->keylen == 16) {
261 mxf->aesc = av_malloc(av_aes_size);
264 av_aes_init(mxf->aesc, s->key, 128, 1);
267 avio_skip(pb, klv_decode_ber_length(pb));
269 klv_decode_ber_length(pb);
270 plaintext_size = avio_rb64(pb);
272 klv_decode_ber_length(pb);
273 avio_read(pb, klv->key, 16);
274 if (!IS_KLV_KEY(klv, mxf_essence_element_key))
276 index = mxf_get_stream_index(s, klv);
280 klv_decode_ber_length(pb);
281 orig_size = avio_rb64(pb);
282 if (orig_size < plaintext_size)
285 size = klv_decode_ber_length(pb);
286 if (size < 32 || size - 32 < orig_size)
288 avio_read(pb, ivec, 16);
289 avio_read(pb, tmpbuf, 16);
291 av_aes_crypt(mxf->aesc, tmpbuf, tmpbuf, 1, ivec, 1);
292 if (memcmp(tmpbuf, checkv, 16))
293 av_log(s, AV_LOG_ERROR, "probably incorrect decryption key\n");
295 size = av_get_packet(pb, pkt, size);
298 else if (size < plaintext_size)
299 return AVERROR_INVALIDDATA;
300 size -= plaintext_size;
302 av_aes_crypt(mxf->aesc, &pkt->data[plaintext_size],
303 &pkt->data[plaintext_size], size >> 4, ivec, 1);
304 av_shrink_packet(pkt, orig_size);
305 pkt->stream_index = index;
306 avio_skip(pb, end - avio_tell(pb));
310 static int mxf_read_packet(AVFormatContext *s, AVPacket *pkt)
314 while (!s->pb->eof_reached) {
315 if (klv_read_packet(&klv, s->pb) < 0)
317 PRINT_KEY(s, "read packet", klv.key);
318 av_dlog(s, "size %"PRIu64" offset %#"PRIx64"\n", klv.length, klv.offset);
319 if (IS_KLV_KEY(klv.key, mxf_encrypted_triplet_key)) {
320 int res = mxf_decrypt_triplet(s, pkt, &klv);
322 av_log(s, AV_LOG_ERROR, "invalid encoded triplet\n");
327 if (IS_KLV_KEY(klv.key, mxf_essence_element_key)) {
328 int index = mxf_get_stream_index(s, &klv);
330 av_log(s, AV_LOG_ERROR, "error getting stream index %d\n", AV_RB32(klv.key+12));
333 if (s->streams[index]->discard == AVDISCARD_ALL)
335 /* check for 8 channels AES3 element */
336 if (klv.key[12] == 0x06 && klv.key[13] == 0x01 && klv.key[14] == 0x10) {
337 if (mxf_get_d10_aes3_packet(s->pb, s->streams[index], pkt, klv.length) < 0) {
338 av_log(s, AV_LOG_ERROR, "error reading D-10 aes3 frame\n");
342 int ret = av_get_packet(s->pb, pkt, klv.length);
346 pkt->stream_index = index;
347 pkt->pos = klv.offset;
351 avio_skip(s->pb, klv.length);
356 static int mxf_read_primer_pack(void *arg, AVIOContext *pb, int tag, int size, UID uid)
358 MXFContext *mxf = arg;
359 int item_num = avio_rb32(pb);
360 int item_len = avio_rb32(pb);
362 if (item_len != 18) {
363 av_log(mxf->fc, AV_LOG_ERROR, "unsupported primer pack item length\n");
366 if (item_num > UINT_MAX / item_len)
368 mxf->local_tags_count = item_num;
369 mxf->local_tags = av_malloc(item_num*item_len);
370 if (!mxf->local_tags)
372 avio_read(pb, mxf->local_tags, item_num*item_len);
376 static int mxf_add_metadata_set(MXFContext *mxf, void *metadata_set)
378 if (mxf->metadata_sets_count+1 >= UINT_MAX / sizeof(*mxf->metadata_sets))
379 return AVERROR(ENOMEM);
380 mxf->metadata_sets = av_realloc(mxf->metadata_sets, (mxf->metadata_sets_count + 1) * sizeof(*mxf->metadata_sets));
381 if (!mxf->metadata_sets)
383 mxf->metadata_sets[mxf->metadata_sets_count] = metadata_set;
384 mxf->metadata_sets_count++;
388 static int mxf_read_cryptographic_context(void *arg, AVIOContext *pb, int tag, int size, UID uid)
390 MXFCryptoContext *cryptocontext = arg;
393 if (IS_KLV_KEY(uid, mxf_crypto_source_container_ul))
394 avio_read(pb, cryptocontext->source_container_ul, 16);
398 static int mxf_read_content_storage(void *arg, AVIOContext *pb, int tag, int size, UID uid)
400 MXFContext *mxf = arg;
403 mxf->packages_count = avio_rb32(pb);
404 if (mxf->packages_count >= UINT_MAX / sizeof(UID))
406 mxf->packages_refs = av_malloc(mxf->packages_count * sizeof(UID));
407 if (!mxf->packages_refs)
409 avio_skip(pb, 4); /* useless size of objects, always 16 according to specs */
410 avio_read(pb, (uint8_t *)mxf->packages_refs, mxf->packages_count * sizeof(UID));
416 static int mxf_read_source_clip(void *arg, AVIOContext *pb, int tag, int size, UID uid)
418 MXFStructuralComponent *source_clip = arg;
421 source_clip->duration = avio_rb64(pb);
424 source_clip->start_position = avio_rb64(pb);
427 /* UMID, only get last 16 bytes */
429 avio_read(pb, source_clip->source_package_uid, 16);
432 source_clip->source_track_id = avio_rb32(pb);
438 static int mxf_read_material_package(void *arg, AVIOContext *pb, int tag, int size, UID uid)
440 MXFPackage *package = arg;
443 package->tracks_count = avio_rb32(pb);
444 if (package->tracks_count >= UINT_MAX / sizeof(UID))
446 package->tracks_refs = av_malloc(package->tracks_count * sizeof(UID));
447 if (!package->tracks_refs)
449 avio_skip(pb, 4); /* useless size of objects, always 16 according to specs */
450 avio_read(pb, (uint8_t *)package->tracks_refs, package->tracks_count * sizeof(UID));
456 static int mxf_read_track(void *arg, AVIOContext *pb, int tag, int size, UID uid)
458 MXFTrack *track = arg;
461 track->track_id = avio_rb32(pb);
464 avio_read(pb, track->track_number, 4);
467 track->edit_rate.den = avio_rb32(pb);
468 track->edit_rate.num = avio_rb32(pb);
471 avio_read(pb, track->sequence_ref, 16);
477 static int mxf_read_sequence(void *arg, AVIOContext *pb, int tag, int size, UID uid)
479 MXFSequence *sequence = arg;
482 sequence->duration = avio_rb64(pb);
485 avio_read(pb, sequence->data_definition_ul, 16);
488 sequence->structural_components_count = avio_rb32(pb);
489 if (sequence->structural_components_count >= UINT_MAX / sizeof(UID))
491 sequence->structural_components_refs = av_malloc(sequence->structural_components_count * sizeof(UID));
492 if (!sequence->structural_components_refs)
494 avio_skip(pb, 4); /* useless size of objects, always 16 according to specs */
495 avio_read(pb, (uint8_t *)sequence->structural_components_refs, sequence->structural_components_count * sizeof(UID));
501 static int mxf_read_source_package(void *arg, AVIOContext *pb, int tag, int size, UID uid)
503 MXFPackage *package = arg;
506 package->tracks_count = avio_rb32(pb);
507 if (package->tracks_count >= UINT_MAX / sizeof(UID))
509 package->tracks_refs = av_malloc(package->tracks_count * sizeof(UID));
510 if (!package->tracks_refs)
512 avio_skip(pb, 4); /* useless size of objects, always 16 according to specs */
513 avio_read(pb, (uint8_t *)package->tracks_refs, package->tracks_count * sizeof(UID));
516 /* UMID, only get last 16 bytes */
518 avio_read(pb, package->package_uid, 16);
521 avio_read(pb, package->descriptor_ref, 16);
527 static int mxf_read_index_table_segment(void *arg, AVIOContext *pb, int tag, int size, UID uid)
530 case 0x3F05: av_dlog(NULL, "EditUnitByteCount %d\n", avio_rb32(pb)); break;
531 case 0x3F06: av_dlog(NULL, "IndexSID %d\n", avio_rb32(pb)); break;
532 case 0x3F07: av_dlog(NULL, "BodySID %d\n", avio_rb32(pb)); break;
533 case 0x3F0B: av_dlog(NULL, "IndexEditRate %d/%d\n", avio_rb32(pb), avio_rb32(pb)); break;
534 case 0x3F0C: av_dlog(NULL, "IndexStartPosition %"PRIu64"\n", avio_rb64(pb)); break;
535 case 0x3F0D: av_dlog(NULL, "IndexDuration %"PRIu64"\n", avio_rb64(pb)); break;
540 static void mxf_read_pixel_layout(AVIOContext *pb, MXFDescriptor *descriptor)
542 int code, value, ofs = 0;
543 char layout[16] = {0};
548 av_dlog(NULL, "pixel layout: code %#x\n", code);
551 layout[ofs++] = code;
552 layout[ofs++] = value;
554 } while (code != 0); /* SMPTE 377M E.2.46 */
556 ff_mxf_decode_pixel_layout(layout, &descriptor->pix_fmt);
559 static int mxf_read_generic_descriptor(void *arg, AVIOContext *pb, int tag, int size, UID uid)
561 MXFDescriptor *descriptor = arg;
564 descriptor->sub_descriptors_count = avio_rb32(pb);
565 if (descriptor->sub_descriptors_count >= UINT_MAX / sizeof(UID))
567 descriptor->sub_descriptors_refs = av_malloc(descriptor->sub_descriptors_count * sizeof(UID));
568 if (!descriptor->sub_descriptors_refs)
570 avio_skip(pb, 4); /* useless size of objects, always 16 according to specs */
571 avio_read(pb, (uint8_t *)descriptor->sub_descriptors_refs, descriptor->sub_descriptors_count * sizeof(UID));
574 avio_read(pb, descriptor->essence_container_ul, 16);
577 descriptor->linked_track_id = avio_rb32(pb);
579 case 0x3201: /* PictureEssenceCoding */
580 avio_read(pb, descriptor->essence_codec_ul, 16);
583 descriptor->width = avio_rb32(pb);
586 descriptor->height = avio_rb32(pb);
589 descriptor->aspect_ratio.num = avio_rb32(pb);
590 descriptor->aspect_ratio.den = avio_rb32(pb);
593 descriptor->sample_rate.num = avio_rb32(pb);
594 descriptor->sample_rate.den = avio_rb32(pb);
596 case 0x3D06: /* SoundEssenceCompression */
597 avio_read(pb, descriptor->essence_codec_ul, 16);
600 descriptor->channels = avio_rb32(pb);
603 descriptor->bits_per_sample = avio_rb32(pb);
606 mxf_read_pixel_layout(pb, descriptor);
609 /* Private uid used by SONY C0023S01.mxf */
610 if (IS_KLV_KEY(uid, mxf_sony_mpeg4_extradata)) {
611 descriptor->extradata = av_malloc(size + FF_INPUT_BUFFER_PADDING_SIZE);
612 if (!descriptor->extradata)
614 descriptor->extradata_size = size;
615 avio_read(pb, descriptor->extradata, size);
623 * Match an uid independently of the version byte and up to len common bytes
626 static int mxf_match_uid(const UID key, const UID uid, int len)
629 for (i = 0; i < len; i++) {
630 if (i != 7 && key[i] != uid[i])
636 static const MXFCodecUL *mxf_get_codec_ul(const MXFCodecUL *uls, UID *uid)
638 while (uls->uid[0]) {
639 if(mxf_match_uid(uls->uid, *uid, uls->matching_len))
646 static void *mxf_resolve_strong_ref(MXFContext *mxf, UID *strong_ref, enum MXFMetadataSetType type)
652 for (i = 0; i < mxf->metadata_sets_count; i++) {
653 if (!memcmp(*strong_ref, mxf->metadata_sets[i]->uid, 16) &&
654 (type == AnyType || mxf->metadata_sets[i]->type == type)) {
655 return mxf->metadata_sets[i];
661 static const MXFCodecUL mxf_essence_container_uls[] = {
662 // video essence container uls
663 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x60,0x01 }, 14, CODEC_ID_MPEG2VIDEO }, /* MPEG-ES Frame wrapped */
664 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x41,0x01 }, 14, CODEC_ID_DVVIDEO }, /* DV 625 25mbps */
665 // sound essence container uls
666 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x01,0x00 }, 14, CODEC_ID_PCM_S16LE }, /* BWF Frame wrapped */
667 { { 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 */
668 { { 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 */
669 { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, CODEC_ID_NONE },
672 static int mxf_parse_structural_metadata(MXFContext *mxf)
674 MXFPackage *material_package = NULL;
675 MXFPackage *temp_package = NULL;
678 av_dlog(mxf->fc, "metadata sets count %d\n", mxf->metadata_sets_count);
679 /* TODO: handle multiple material packages (OP3x) */
680 for (i = 0; i < mxf->packages_count; i++) {
681 material_package = mxf_resolve_strong_ref(mxf, &mxf->packages_refs[i], MaterialPackage);
682 if (material_package) break;
684 if (!material_package) {
685 av_log(mxf->fc, AV_LOG_ERROR, "no material package found\n");
689 for (i = 0; i < material_package->tracks_count; i++) {
690 MXFPackage *source_package = NULL;
691 MXFTrack *material_track = NULL;
692 MXFTrack *source_track = NULL;
693 MXFTrack *temp_track = NULL;
694 MXFDescriptor *descriptor = NULL;
695 MXFStructuralComponent *component = NULL;
696 UID *essence_container_ul = NULL;
697 const MXFCodecUL *codec_ul = NULL;
698 const MXFCodecUL *container_ul = NULL;
701 if (!(material_track = mxf_resolve_strong_ref(mxf, &material_package->tracks_refs[i], Track))) {
702 av_log(mxf->fc, AV_LOG_ERROR, "could not resolve material track strong ref\n");
706 if (!(material_track->sequence = mxf_resolve_strong_ref(mxf, &material_track->sequence_ref, Sequence))) {
707 av_log(mxf->fc, AV_LOG_ERROR, "could not resolve material track sequence strong ref\n");
711 /* TODO: handle multiple source clips */
712 for (j = 0; j < material_track->sequence->structural_components_count; j++) {
713 /* TODO: handle timecode component */
714 component = mxf_resolve_strong_ref(mxf, &material_track->sequence->structural_components_refs[j], SourceClip);
718 for (k = 0; k < mxf->packages_count; k++) {
719 temp_package = mxf_resolve_strong_ref(mxf, &mxf->packages_refs[k], SourcePackage);
722 if (!memcmp(temp_package->package_uid, component->source_package_uid, 16)) {
723 source_package = temp_package;
727 if (!source_package) {
728 av_log(mxf->fc, AV_LOG_ERROR, "material track %d: no corresponding source package found\n", material_track->track_id);
731 for (k = 0; k < source_package->tracks_count; k++) {
732 if (!(temp_track = mxf_resolve_strong_ref(mxf, &source_package->tracks_refs[k], Track))) {
733 av_log(mxf->fc, AV_LOG_ERROR, "could not resolve source track strong ref\n");
736 if (temp_track->track_id == component->source_track_id) {
737 source_track = temp_track;
742 av_log(mxf->fc, AV_LOG_ERROR, "material track %d: no corresponding source track found\n", material_track->track_id);
749 st = av_new_stream(mxf->fc, source_track->track_id);
751 av_log(mxf->fc, AV_LOG_ERROR, "could not allocate stream\n");
754 st->priv_data = source_track;
755 st->duration = component->duration;
756 if (st->duration == -1)
757 st->duration = AV_NOPTS_VALUE;
758 st->start_time = component->start_position;
759 av_set_pts_info(st, 64, material_track->edit_rate.num, material_track->edit_rate.den);
761 if (!(source_track->sequence = mxf_resolve_strong_ref(mxf, &source_track->sequence_ref, Sequence))) {
762 av_log(mxf->fc, AV_LOG_ERROR, "could not resolve source track sequence strong ref\n");
766 PRINT_KEY(mxf->fc, "data definition ul", source_track->sequence->data_definition_ul);
767 codec_ul = mxf_get_codec_ul(ff_mxf_data_definition_uls, &source_track->sequence->data_definition_ul);
768 st->codec->codec_type = codec_ul->id;
770 source_package->descriptor = mxf_resolve_strong_ref(mxf, &source_package->descriptor_ref, AnyType);
771 if (source_package->descriptor) {
772 if (source_package->descriptor->type == MultipleDescriptor) {
773 for (j = 0; j < source_package->descriptor->sub_descriptors_count; j++) {
774 MXFDescriptor *sub_descriptor = mxf_resolve_strong_ref(mxf, &source_package->descriptor->sub_descriptors_refs[j], Descriptor);
776 if (!sub_descriptor) {
777 av_log(mxf->fc, AV_LOG_ERROR, "could not resolve sub descriptor strong ref\n");
780 if (sub_descriptor->linked_track_id == source_track->track_id) {
781 descriptor = sub_descriptor;
785 } else if (source_package->descriptor->type == Descriptor)
786 descriptor = source_package->descriptor;
789 av_log(mxf->fc, AV_LOG_INFO, "source track %d: stream %d, no descriptor found\n", source_track->track_id, st->index);
792 PRINT_KEY(mxf->fc, "essence codec ul", descriptor->essence_codec_ul);
793 PRINT_KEY(mxf->fc, "essence container ul", descriptor->essence_container_ul);
794 essence_container_ul = &descriptor->essence_container_ul;
795 /* HACK: replacing the original key with mxf_encrypted_essence_container
796 * is not allowed according to s429-6, try to find correct information anyway */
797 if (IS_KLV_KEY(essence_container_ul, mxf_encrypted_essence_container)) {
798 av_log(mxf->fc, AV_LOG_INFO, "broken encrypted mxf file\n");
799 for (k = 0; k < mxf->metadata_sets_count; k++) {
800 MXFMetadataSet *metadata = mxf->metadata_sets[k];
801 if (metadata->type == CryptoContext) {
802 essence_container_ul = &((MXFCryptoContext *)metadata)->source_container_ul;
807 /* TODO: drop PictureEssenceCoding and SoundEssenceCompression, only check EssenceContainer */
808 codec_ul = mxf_get_codec_ul(ff_mxf_codec_uls, &descriptor->essence_codec_ul);
809 st->codec->codec_id = codec_ul->id;
810 if (descriptor->extradata) {
811 st->codec->extradata = descriptor->extradata;
812 st->codec->extradata_size = descriptor->extradata_size;
814 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
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->width = descriptor->width;
819 st->codec->height = descriptor->height;
820 if (st->codec->codec_id == CODEC_ID_RAWVIDEO)
821 st->codec->pix_fmt = descriptor->pix_fmt;
822 st->need_parsing = AVSTREAM_PARSE_HEADERS;
823 } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
824 container_ul = mxf_get_codec_ul(mxf_essence_container_uls, essence_container_ul);
825 if (st->codec->codec_id == CODEC_ID_NONE)
826 st->codec->codec_id = container_ul->id;
827 st->codec->channels = descriptor->channels;
828 st->codec->bits_per_coded_sample = descriptor->bits_per_sample;
829 st->codec->sample_rate = descriptor->sample_rate.num / descriptor->sample_rate.den;
830 /* TODO: implement CODEC_ID_RAWAUDIO */
831 if (st->codec->codec_id == CODEC_ID_PCM_S16LE) {
832 if (descriptor->bits_per_sample == 24)
833 st->codec->codec_id = CODEC_ID_PCM_S24LE;
834 else if (descriptor->bits_per_sample == 32)
835 st->codec->codec_id = CODEC_ID_PCM_S32LE;
836 } else if (st->codec->codec_id == CODEC_ID_PCM_S16BE) {
837 if (descriptor->bits_per_sample == 24)
838 st->codec->codec_id = CODEC_ID_PCM_S24BE;
839 else if (descriptor->bits_per_sample == 32)
840 st->codec->codec_id = CODEC_ID_PCM_S32BE;
841 } else if (st->codec->codec_id == CODEC_ID_MP2) {
842 st->need_parsing = AVSTREAM_PARSE_FULL;
845 if (st->codec->codec_type != AVMEDIA_TYPE_DATA && (*essence_container_ul)[15] > 0x01) {
846 av_log(mxf->fc, AV_LOG_WARNING, "only frame wrapped mappings are correctly supported\n");
847 st->need_parsing = AVSTREAM_PARSE_FULL;
853 static const MXFMetadataReadTableEntry mxf_metadata_read_table[] = {
854 { { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x05,0x01,0x00 }, mxf_read_primer_pack },
855 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x18,0x00 }, mxf_read_content_storage, 0, AnyType },
856 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x37,0x00 }, mxf_read_source_package, sizeof(MXFPackage), SourcePackage },
857 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x36,0x00 }, mxf_read_material_package, sizeof(MXFPackage), MaterialPackage },
858 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x0F,0x00 }, mxf_read_sequence, sizeof(MXFSequence), Sequence },
859 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x11,0x00 }, mxf_read_source_clip, sizeof(MXFStructuralComponent), SourceClip },
860 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x44,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), MultipleDescriptor },
861 { { 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 */
862 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x28,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* CDCI */
863 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x29,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* RGBA */
864 { { 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 */
865 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* Wave */
866 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* AES3 */
867 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x3A,0x00 }, mxf_read_track, sizeof(MXFTrack), Track }, /* Static Track */
868 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x3B,0x00 }, mxf_read_track, sizeof(MXFTrack), Track }, /* Generic Track */
869 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x04,0x01,0x02,0x02,0x00,0x00 }, mxf_read_cryptographic_context, sizeof(MXFCryptoContext), CryptoContext },
870 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x10,0x01,0x00 }, mxf_read_index_table_segment, sizeof(MXFIndexTableSegment), IndexTableSegment },
871 { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, NULL, 0, AnyType },
874 static int mxf_read_local_tags(MXFContext *mxf, KLVPacket *klv, MXFMetadataReadFunc *read_child, int ctx_size, enum MXFMetadataSetType type)
876 AVIOContext *pb = mxf->fc->pb;
877 MXFMetadataSet *ctx = ctx_size ? av_mallocz(ctx_size) : mxf;
878 uint64_t klv_end = avio_tell(pb) + klv->length;
882 while (avio_tell(pb) + 4 < klv_end) {
883 int tag = avio_rb16(pb);
884 int size = avio_rb16(pb); /* KLV specified by 0x53 */
885 uint64_t next = avio_tell(pb) + size;
888 av_dlog(mxf->fc, "local tag %#04x size %d\n", tag, size);
889 if (!size) { /* ignore empty tag, needed for some files with empty UMID tag */
890 av_log(mxf->fc, AV_LOG_ERROR, "local tag %#04x with 0 size\n", tag);
893 if (tag > 0x7FFF) { /* dynamic tag */
895 for (i = 0; i < mxf->local_tags_count; i++) {
896 int local_tag = AV_RB16(mxf->local_tags+i*18);
897 if (local_tag == tag) {
898 memcpy(uid, mxf->local_tags+i*18+2, 16);
899 av_dlog(mxf->fc, "local tag %#04x\n", local_tag);
900 PRINT_KEY(mxf->fc, "uid", uid);
904 if (ctx_size && tag == 0x3C0A)
905 avio_read(pb, ctx->uid, 16);
906 else if (read_child(ctx, pb, tag, size, uid) < 0)
909 avio_seek(pb, next, SEEK_SET);
911 if (ctx_size) ctx->type = type;
912 return ctx_size ? mxf_add_metadata_set(mxf, ctx) : 0;
915 static int mxf_read_header(AVFormatContext *s, AVFormatParameters *ap)
917 MXFContext *mxf = s->priv_data;
920 if (!mxf_read_sync(s->pb, mxf_header_partition_pack_key, 14)) {
921 av_log(s, AV_LOG_ERROR, "could not find header partition pack key\n");
924 avio_seek(s->pb, -14, SEEK_CUR);
926 while (!s->pb->eof_reached) {
927 const MXFMetadataReadTableEntry *metadata;
929 if (klv_read_packet(&klv, s->pb) < 0)
931 PRINT_KEY(s, "read header", klv.key);
932 av_dlog(s, "size %"PRIu64" offset %#"PRIx64"\n", klv.length, klv.offset);
933 if (IS_KLV_KEY(klv.key, mxf_encrypted_triplet_key) ||
934 IS_KLV_KEY(klv.key, mxf_essence_element_key)) {
935 /* FIXME avoid seek */
936 avio_seek(s->pb, klv.offset, SEEK_SET);
940 for (metadata = mxf_metadata_read_table; metadata->read; metadata++) {
941 if (IS_KLV_KEY(klv.key, metadata->key)) {
943 if (klv.key[5] == 0x53) {
944 res = mxf_read_local_tags(mxf, &klv, metadata->read, metadata->ctx_size, metadata->type);
946 res = metadata->read(mxf, s->pb, 0, 0, NULL);
948 av_log(s, AV_LOG_ERROR, "error reading header metadata\n");
955 avio_skip(s->pb, klv.length);
957 return mxf_parse_structural_metadata(mxf);
960 static int mxf_read_close(AVFormatContext *s)
962 MXFContext *mxf = s->priv_data;
965 av_freep(&mxf->packages_refs);
967 for (i = 0; i < s->nb_streams; i++)
968 s->streams[i]->priv_data = NULL;
970 for (i = 0; i < mxf->metadata_sets_count; i++) {
971 switch (mxf->metadata_sets[i]->type) {
972 case MultipleDescriptor:
973 av_freep(&((MXFDescriptor *)mxf->metadata_sets[i])->sub_descriptors_refs);
976 av_freep(&((MXFSequence *)mxf->metadata_sets[i])->structural_components_refs);
979 case MaterialPackage:
980 av_freep(&((MXFPackage *)mxf->metadata_sets[i])->tracks_refs);
985 av_freep(&mxf->metadata_sets[i]);
987 av_freep(&mxf->metadata_sets);
988 av_freep(&mxf->aesc);
989 av_freep(&mxf->local_tags);
993 static int mxf_probe(AVProbeData *p) {
994 uint8_t *bufp = p->buf;
995 uint8_t *end = p->buf + p->buf_size;
997 if (p->buf_size < sizeof(mxf_header_partition_pack_key))
1000 /* Must skip Run-In Sequence and search for MXF header partition pack key SMPTE 377M 5.5 */
1001 end -= sizeof(mxf_header_partition_pack_key);
1002 for (; bufp < end; bufp++) {
1003 if (IS_KLV_KEY(bufp, mxf_header_partition_pack_key))
1004 return AVPROBE_SCORE_MAX;
1009 /* rudimentary byte seek */
1010 /* XXX: use MXF Index */
1011 static int mxf_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
1013 AVStream *st = s->streams[stream_index];
1018 if (sample_time < 0)
1020 seconds = av_rescale(sample_time, st->time_base.num, st->time_base.den);
1021 avio_seek(s->pb, (s->bit_rate * seconds) >> 3, SEEK_SET);
1022 av_update_cur_dts(s, st, sample_time);
1026 AVInputFormat ff_mxf_demuxer = {
1028 .long_name = NULL_IF_CONFIG_SMALL("Material eXchange Format"),
1029 .priv_data_size = sizeof(MXFContext),
1030 .read_probe = mxf_probe,
1031 .read_header = mxf_read_header,
1032 .read_packet = mxf_read_packet,
1033 .read_close = mxf_read_close,
1034 .read_seek = mxf_read_seek,