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
51 typedef uint8_t UID[16];
53 enum MXFMetadataSetType {
67 typedef struct MXFCryptoContext {
69 enum MXFMetadataSetType type;
71 UID source_container_ul;
74 typedef struct MXFStructuralComponent {
76 enum MXFMetadataSetType type;
77 UID source_package_uid;
78 UID data_definition_ul;
80 int64_t start_position;
82 } MXFStructuralComponent;
84 typedef struct MXFSequence {
86 enum MXFMetadataSetType type;
87 UID data_definition_ul;
88 UID *structural_components_refs;
89 int structural_components_count;
93 typedef struct MXFTrack {
95 enum MXFMetadataSetType type;
96 MXFSequence *sequence; /* mandatory, and only one */
99 uint8_t track_number[4];
100 AVRational edit_rate;
103 typedef struct MXFDescriptor {
105 enum MXFMetadataSetType type;
106 UID essence_container_ul;
107 UID essence_codec_ul;
108 AVRational sample_rate;
109 AVRational aspect_ratio;
114 UID *sub_descriptors_refs;
115 int sub_descriptors_count;
121 typedef struct MXFPackage {
123 enum MXFMetadataSetType type;
127 MXFDescriptor *descriptor; /* only one */
131 typedef struct MXFEssenceContainerData {
133 enum MXFMetadataSetType type;
134 UID linked_package_uid;
135 } MXFEssenceContainerData;
139 enum MXFMetadataSetType type;
142 typedef struct MXFContext {
145 MXFMetadataSet **metadata_sets;
146 int metadata_sets_count;
147 const uint8_t *sync_key;
152 typedef struct KLVPacket {
158 enum MXFWrappingScheme {
163 typedef struct MXFCodecUL {
166 enum MXFWrappingScheme wrapping;
169 typedef struct MXFDataDefinitionUL {
172 } MXFDataDefinitionUL;
174 typedef struct MXFMetadataReadTableEntry {
178 enum MXFMetadataSetType type;
179 } MXFMetadataReadTableEntry;
181 /* partial keys to match */
182 static const uint8_t mxf_header_partition_pack_key[] = { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02 };
183 static const uint8_t mxf_essence_element_key[] = { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01 };
184 /* complete keys to match */
185 static const uint8_t mxf_encrypted_triplet_key[] = { 0x06,0x0e,0x2b,0x34,0x02,0x04,0x01,0x07,0x0d,0x01,0x03,0x01,0x02,0x7e,0x01,0x00 };
186 static const uint8_t mxf_encrypted_essence_container[] = { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x0d,0x01,0x03,0x01,0x02,0x0b,0x01,0x00 };
188 #define IS_KLV_KEY(x, y) (!memcmp(x, y, sizeof(y)))
190 #define PRINT_KEY(s, x) dprintf("%s %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X\n", s, \
191 (x)[0], (x)[1], (x)[2], (x)[3], (x)[4], (x)[5], (x)[6], (x)[7], (x)[8], (x)[9], (x)[10], (x)[11], (x)[12], (x)[13], (x)[14], (x)[15])
193 static int64_t klv_decode_ber_length(ByteIOContext *pb)
195 uint64_t size = get_byte(pb);
196 if (size & 0x80) { /* long form */
197 int bytes_num = size & 0x7f;
198 /* SMPTE 379M 5.3.4 guarantee that bytes_num must not exceed 8 bytes */
203 size = size << 8 | get_byte(pb);
208 static int klv_read_packet(KLVPacket *klv, ByteIOContext *pb)
210 klv->offset = url_ftell(pb);
211 get_buffer(pb, klv->key, 16);
212 klv->length = klv_decode_ber_length(pb);
213 return klv->length == -1 ? -1 : 0;
216 static int mxf_get_stream_index(AVFormatContext *s, KLVPacket *klv)
220 for (i = 0; i < s->nb_streams; i++) {
221 MXFTrack *track = s->streams[i]->priv_data;
223 if (!memcmp(klv->key + sizeof(mxf_essence_element_key), track->track_number, sizeof(track->track_number)))
226 /* return 0 if only one stream, for OP Atom files with 0 as track number */
227 return s->nb_streams == 1 ? 0 : -1;
230 /* XXX: use AVBitStreamFilter */
231 static int mxf_get_d10_aes3_packet(ByteIOContext *pb, AVStream *st, AVPacket *pkt, int64_t length)
233 uint8_t buffer[61444];
234 uint8_t *buf_ptr, *end_ptr, *data_ptr;
236 if (length > 61444) /* worst case PAL 1920 samples 8 channels */
238 get_buffer(pb, buffer, length);
239 av_new_packet(pkt, length);
240 data_ptr = pkt->data;
241 end_ptr = buffer + length;
242 buf_ptr = buffer + 4; /* skip SMPTE 331M header */
243 for (; buf_ptr < end_ptr; buf_ptr += 4) {
244 if (st->codec->bits_per_sample == 24) {
245 data_ptr[0] = (buf_ptr[2] >> 4) | ((buf_ptr[3] & 0x0f) << 4);
246 data_ptr[1] = (buf_ptr[1] >> 4) | ((buf_ptr[2] & 0x0f) << 4);
247 data_ptr[2] = (buf_ptr[0] >> 4) | ((buf_ptr[1] & 0x0f) << 4);
250 data_ptr[0] = (buf_ptr[2] >> 4) | ((buf_ptr[3] & 0x0f) << 4);
251 data_ptr[1] = (buf_ptr[1] >> 4) | ((buf_ptr[2] & 0x0f) << 4);
255 pkt->size = data_ptr - pkt->data;
259 static int mxf_decrypt_triplet(AVFormatContext *s, AVPacket *pkt, KLVPacket *klv)
261 static const uint8_t checkv[16] = {0x43, 0x48, 0x55, 0x4b, 0x43, 0x48, 0x55, 0x4b, 0x43, 0x48, 0x55, 0x4b, 0x43, 0x48, 0x55, 0x4b};
262 MXFContext *mxf = s->priv_data;
263 ByteIOContext *pb = &s->pb;
264 offset_t end = url_ftell(pb) + klv->length;
267 uint64_t plaintext_size;
272 if (!mxf->aesc && s->key && s->keylen == 16) {
273 mxf->aesc = av_malloc(av_aes_size);
274 av_aes_init(mxf->aesc, s->key, 128, 1);
277 url_fskip(pb, klv_decode_ber_length(pb));
279 klv_decode_ber_length(pb);
280 plaintext_size = get_be64(pb);
282 klv_decode_ber_length(pb);
283 get_buffer(pb, klv->key, 16);
284 if (!IS_KLV_KEY(klv, mxf_essence_element_key)) goto err_out;
285 index = mxf_get_stream_index(s, klv);
286 if (index < 0) goto err_out;
288 klv_decode_ber_length(pb);
289 orig_size = get_be64(pb);
290 if (orig_size < plaintext_size) goto err_out;
292 size = klv_decode_ber_length(pb);
293 if (size < 32 || size - 32 < orig_size) goto err_out;
294 get_buffer(pb, ivec, 16);
295 get_buffer(pb, tmpbuf, 16);
297 av_aes_crypt(mxf->aesc, tmpbuf, tmpbuf, 1, ivec, 1);
298 if (memcmp(tmpbuf, checkv, 16))
299 av_log(s, AV_LOG_ERROR, "probably incorrect decryption key\n");
301 av_get_packet(pb, pkt, size);
302 size -= plaintext_size;
304 av_aes_crypt(mxf->aesc, &pkt->data[plaintext_size],
305 &pkt->data[plaintext_size], size >> 4, ivec, 1);
306 pkt->size = orig_size;
307 pkt->stream_index = index;
308 url_fskip(pb, end - url_ftell(pb));
312 url_fskip(pb, end - url_ftell(pb));
316 static int mxf_read_packet(AVFormatContext *s, AVPacket *pkt)
318 MXFContext *mxf = s->priv_data;
321 while (!url_feof(&s->pb)) {
322 if (klv_read_packet(&klv, &s->pb) < 0) {
323 av_log(s, AV_LOG_ERROR, "error reading KLV packet\n");
327 PRINT_KEY("read packet", klv.key);
329 if (IS_KLV_KEY(klv.key, mxf_encrypted_triplet_key)) {
330 int res = mxf_decrypt_triplet(s, pkt, &klv);
331 mxf->sync_key = mxf_encrypted_triplet_key;
333 av_log(s, AV_LOG_ERROR, "invalid encoded triplet\n");
338 if (IS_KLV_KEY(klv.key, mxf_essence_element_key)) {
339 int index = mxf_get_stream_index(s, &klv);
341 av_log(s, AV_LOG_ERROR, "error getting stream index\n");
342 url_fskip(&s->pb, klv.length);
345 /* check for 8 channels AES3 element */
346 if (klv.key[12] == 0x06 && klv.key[13] == 0x01 && klv.key[14] == 0x10) {
347 if (mxf_get_d10_aes3_packet(&s->pb, s->streams[index], pkt, klv.length) < 0) {
348 av_log(s, AV_LOG_ERROR, "error reading D-10 aes3 frame\n");
352 av_get_packet(&s->pb, pkt, klv.length);
353 pkt->stream_index = index;
356 url_fskip(&s->pb, klv.length);
361 static int mxf_add_metadata_set(MXFContext *mxf, void *metadata_set)
363 mxf->metadata_sets = av_realloc(mxf->metadata_sets, (mxf->metadata_sets_count + 1) * sizeof(*mxf->metadata_sets));
364 mxf->metadata_sets[mxf->metadata_sets_count] = metadata_set;
365 mxf->metadata_sets_count++;
369 static int mxf_read_metadata_cryptographic_context(MXFCryptoContext *cryptocontext, ByteIOContext *pb, int tag)
373 get_buffer(pb, cryptocontext->context_uid, 16);
376 get_buffer(pb, cryptocontext->source_container_ul, 16);
382 static int mxf_read_metadata_content_storage(MXFContext *mxf, ByteIOContext *pb, int tag)
386 mxf->packages_count = get_be32(pb);
387 if (mxf->packages_count >= UINT_MAX / sizeof(UID))
389 mxf->packages_refs = av_malloc(mxf->packages_count * sizeof(UID));
390 url_fskip(pb, 4); /* useless size of objects, always 16 according to specs */
391 get_buffer(pb, (uint8_t *)mxf->packages_refs, mxf->packages_count * sizeof(UID));
397 static int mxf_read_metadata_source_clip(MXFStructuralComponent *source_clip, ByteIOContext *pb, int tag)
401 source_clip->duration = get_be64(pb);
404 source_clip->start_position = get_be64(pb);
407 /* UMID, only get last 16 bytes */
409 get_buffer(pb, source_clip->source_package_uid, 16);
412 source_clip->source_track_id = get_be32(pb);
418 static int mxf_read_metadata_material_package(MXFPackage *package, ByteIOContext *pb, int tag)
422 package->tracks_count = get_be32(pb);
423 if (package->tracks_count >= UINT_MAX / sizeof(UID))
425 package->tracks_refs = av_malloc(package->tracks_count * sizeof(UID));
426 url_fskip(pb, 4); /* useless size of objects, always 16 according to specs */
427 get_buffer(pb, (uint8_t *)package->tracks_refs, package->tracks_count * sizeof(UID));
433 static int mxf_read_metadata_track(MXFTrack *track, ByteIOContext *pb, int tag)
437 track->track_id = get_be32(pb);
440 get_buffer(pb, track->track_number, 4);
443 track->edit_rate.den = get_be32(pb);
444 track->edit_rate.num = get_be32(pb);
447 get_buffer(pb, track->sequence_ref, 16);
453 static int mxf_read_metadata_sequence(MXFSequence *sequence, ByteIOContext *pb, int tag)
457 sequence->duration = get_be64(pb);
460 get_buffer(pb, sequence->data_definition_ul, 16);
463 sequence->structural_components_count = get_be32(pb);
464 if (sequence->structural_components_count >= UINT_MAX / sizeof(UID))
466 sequence->structural_components_refs = av_malloc(sequence->structural_components_count * sizeof(UID));
467 url_fskip(pb, 4); /* useless size of objects, always 16 according to specs */
468 get_buffer(pb, (uint8_t *)sequence->structural_components_refs, sequence->structural_components_count * sizeof(UID));
474 static int mxf_read_metadata_source_package(MXFPackage *package, ByteIOContext *pb, int tag)
478 package->tracks_count = get_be32(pb);
479 if (package->tracks_count >= UINT_MAX / sizeof(UID))
481 package->tracks_refs = av_malloc(package->tracks_count * sizeof(UID));
482 url_fskip(pb, 4); /* useless size of objects, always 16 according to specs */
483 get_buffer(pb, (uint8_t *)package->tracks_refs, package->tracks_count * sizeof(UID));
486 /* UMID, only get last 16 bytes */
488 get_buffer(pb, package->package_uid, 16);
491 get_buffer(pb, package->descriptor_ref, 16);
497 static void mxf_read_metadata_pixel_layout(ByteIOContext *pb, MXFDescriptor *descriptor)
503 dprintf("pixel layout: code 0x%x\n", code);
506 descriptor->bits_per_sample += get_byte(pb);
509 descriptor->bits_per_sample += get_byte(pb);
512 descriptor->bits_per_sample += get_byte(pb);
517 } while (code != 0); /* SMPTE 377M E.2.46 */
520 static int mxf_read_metadata_generic_descriptor(MXFDescriptor *descriptor, ByteIOContext *pb, int tag, int size)
524 descriptor->sub_descriptors_count = get_be32(pb);
525 if (descriptor->sub_descriptors_count >= UINT_MAX / sizeof(UID))
527 descriptor->sub_descriptors_refs = av_malloc(descriptor->sub_descriptors_count * sizeof(UID));
528 url_fskip(pb, 4); /* useless size of objects, always 16 according to specs */
529 get_buffer(pb, (uint8_t *)descriptor->sub_descriptors_refs, descriptor->sub_descriptors_count * sizeof(UID));
532 get_buffer(pb, descriptor->essence_container_ul, 16);
535 descriptor->linked_track_id = get_be32(pb);
537 case 0x3201: /* PictureEssenceCoding */
538 get_buffer(pb, descriptor->essence_codec_ul, 16);
541 descriptor->width = get_be32(pb);
544 descriptor->height = get_be32(pb);
547 descriptor->aspect_ratio.num = get_be32(pb);
548 descriptor->aspect_ratio.den = get_be32(pb);
551 descriptor->sample_rate.num = get_be32(pb);
552 descriptor->sample_rate.den = get_be32(pb);
554 case 0x3D06: /* SoundEssenceCompression */
555 get_buffer(pb, descriptor->essence_codec_ul, 16);
558 descriptor->channels = get_be32(pb);
561 descriptor->bits_per_sample = get_be32(pb);
564 mxf_read_metadata_pixel_layout(pb, descriptor);
566 case 0x8201: /* Private tag used by SONY C0023S01.mxf */
567 descriptor->extradata = av_malloc(size);
568 descriptor->extradata_size = size;
569 get_buffer(pb, descriptor->extradata, size);
575 /* SMPTE RP224 http://www.smpte-ra.org/mdd/index.html */
576 static const MXFDataDefinitionUL mxf_data_definition_uls[] = {
577 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x01,0x03,0x02,0x02,0x01,0x00,0x00,0x00 }, CODEC_TYPE_VIDEO },
578 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x01,0x03,0x02,0x02,0x02,0x00,0x00,0x00 }, CODEC_TYPE_AUDIO },
579 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x05,0x01,0x03,0x02,0x02,0x02,0x02,0x00,0x00 }, CODEC_TYPE_AUDIO },
580 { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, CODEC_TYPE_DATA },
583 static const MXFCodecUL mxf_codec_uls[] = {
584 /* PictureEssenceCoding */
585 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x02,0x00 }, CODEC_ID_MPEG2VIDEO, Frame }, /* 422P@ML I-Frame */
586 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 }, CODEC_ID_MPEG2VIDEO, Frame }, /* 422P@HL I-Frame */
587 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, CODEC_ID_MPEG2VIDEO, Frame }, /* 422P@HL Long GoP */
588 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 }, CODEC_ID_MPEG2VIDEO, Frame }, /* MP@ML Long GoP */
589 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 }, CODEC_ID_MPEG2VIDEO, Frame }, /* 422P@ML Long GoP */
590 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, CODEC_ID_MPEG2VIDEO, Frame }, /* MP@HL Long GoP */
591 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x20,0x02,0x03 }, CODEC_ID_MPEG4, Frame }, /* XDCAM proxy_pal030926.mxf */
592 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x20,0x02,0x04 }, CODEC_ID_MPEG4, Frame }, /* XDCAM Proxy C0023S01.mxf */
593 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x05 }, CODEC_ID_MPEG2VIDEO, Frame }, /* D-10 30Mbps PAL */
594 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x01 }, CODEC_ID_MPEG2VIDEO, Frame }, /* D-10 50Mbps PAL */
595 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x04,0x00 }, CODEC_ID_DVVIDEO, Frame }, /* DVCPRO50 PAL */
596 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x02,0x00 }, CODEC_ID_DVVIDEO, Frame }, /* DVCPRO25 PAL */
597 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x01,0x02,0x00 }, CODEC_ID_DVVIDEO, Frame }, /* DV25 IEC PAL */
598 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x07,0x04,0x01,0x02,0x02,0x03,0x01,0x01,0x00 }, CODEC_ID_JPEG2000, Frame }, /* JPEG2000 Codestream */
599 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x01,0x7F,0x00,0x00,0x00 }, CODEC_ID_RAWVIDEO, Frame }, /* Uncompressed */
600 /* SoundEssenceCompression */
601 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 }, CODEC_ID_PCM_S16LE, Frame }, /* Uncompressed */
602 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x7F,0x00,0x00,0x00 }, CODEC_ID_PCM_S16LE, Frame },
603 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x07,0x04,0x02,0x02,0x01,0x7E,0x00,0x00,0x00 }, CODEC_ID_PCM_S16BE, Frame }, /* From Omneon MXF file */
604 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x02,0x03,0x01,0x01,0x00 }, CODEC_ID_PCM_ALAW, Frame },
605 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x04,0x04,0x02,0x02,0x02,0x03,0x01,0x01,0x00 }, CODEC_ID_PCM_ALAW, Frame }, /* XDCAM Proxy C0023S01.mxf */
606 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x02,0x03,0x02,0x01,0x00 }, CODEC_ID_AC3, Frame },
607 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x02,0x03,0x02,0x05,0x00 }, CODEC_ID_MP2, Frame }, /* MP2 or MP3 */
608 //{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x02,0x03,0x02,0x1C,0x00 }, CODEC_ID_DOLBY_E, Frame }, /* Dolby-E */
609 { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, CODEC_ID_NONE, Frame },
612 static const MXFCodecUL mxf_picture_essence_container_uls[] = {
613 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x60,0x01 }, CODEC_ID_MPEG2VIDEO, Frame }, /* MPEG-ES Frame wrapped */
614 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0xe0,0x02 }, CODEC_ID_MPEG2VIDEO, Clip }, /* MPEG-ES Clip wrapped, 0xe0 MPV stream id */
615 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x04,0x61,0x07 }, CODEC_ID_MPEG2VIDEO, Clip }, /* MPEG-ES Custom wrapped, 0x61 ??? stream id */
616 { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, CODEC_ID_NONE, Frame },
619 static const MXFCodecUL mxf_sound_essence_container_uls[] = {
620 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x01,0x00 }, CODEC_ID_PCM_S16LE, Frame }, /* BWF Frame wrapped */
621 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x03,0x00 }, CODEC_ID_PCM_S16LE, Frame }, /* AES Frame wrapped */
622 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x40,0x01 }, CODEC_ID_MP2, Frame }, /* MPEG-ES Frame wrapped, 0x40 ??? stream id */
623 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0xc0,0x01 }, CODEC_ID_MP2, Frame }, /* MPEG-ES Frame wrapped, 0xc0 MPA stream id */
624 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0xc0,0x02 }, CODEC_ID_MP2, Clip }, /* MPEG-ES Clip wrapped, 0xc0 MPA stream id */
625 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 }, CODEC_ID_PCM_S16BE, Frame }, /* D-10 Mapping 30Mbps PAL Extended Template */
626 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 }, CODEC_ID_PCM_S16BE, Frame }, /* D-10 Mapping 50Mbps PAL Extended Template */
627 { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, CODEC_ID_NONE, Frame },
630 static const MXFCodecUL *mxf_get_codec_ul(const MXFCodecUL *uls, UID *uid)
632 while (uls->id != CODEC_ID_NONE) {
633 if(!memcmp(uls->uid, *uid, 16))
640 static enum CodecType mxf_get_codec_type(const MXFDataDefinitionUL *uls, UID *uid)
642 while (uls->type != CODEC_TYPE_DATA) {
643 if(!memcmp(uls->uid, *uid, 16))
650 static void *mxf_resolve_strong_ref(MXFContext *mxf, UID *strong_ref, enum MXFMetadataSetType type)
656 for (i = 0; i < mxf->metadata_sets_count; i++) {
657 if (!memcmp(*strong_ref, mxf->metadata_sets[i]->uid, 16) &&
658 (type == AnyType || mxf->metadata_sets[i]->type == type)) {
659 return mxf->metadata_sets[i];
665 static int mxf_parse_structural_metadata(MXFContext *mxf)
667 MXFPackage *material_package = NULL;
668 MXFPackage *temp_package = NULL;
671 dprintf("metadata sets count %d\n", mxf->metadata_sets_count);
672 /* TODO: handle multiple material packages (OP3x) */
673 for (i = 0; i < mxf->packages_count; i++) {
674 material_package = mxf_resolve_strong_ref(mxf, &mxf->packages_refs[i], MaterialPackage);
675 if (material_package) break;
677 if (!material_package) {
678 av_log(mxf->fc, AV_LOG_ERROR, "no material package found\n");
682 for (i = 0; i < material_package->tracks_count; i++) {
683 MXFPackage *source_package = NULL;
684 MXFTrack *material_track = NULL;
685 MXFTrack *source_track = NULL;
686 MXFTrack *temp_track = NULL;
687 MXFDescriptor *descriptor = NULL;
688 MXFStructuralComponent *component = NULL;
689 UID *essence_container_ul = NULL;
690 const MXFCodecUL *codec_ul = NULL;
691 const MXFCodecUL *container_ul = NULL;
694 if (!(material_track = mxf_resolve_strong_ref(mxf, &material_package->tracks_refs[i], Track))) {
695 av_log(mxf->fc, AV_LOG_ERROR, "could not resolve material track strong ref\n");
699 if (!(material_track->sequence = mxf_resolve_strong_ref(mxf, &material_track->sequence_ref, Sequence))) {
700 av_log(mxf->fc, AV_LOG_ERROR, "could not resolve material track sequence strong ref\n");
704 /* TODO: handle multiple source clips */
705 for (j = 0; j < material_track->sequence->structural_components_count; j++) {
706 /* TODO: handle timecode component */
707 component = mxf_resolve_strong_ref(mxf, &material_track->sequence->structural_components_refs[j], SourceClip);
711 for (k = 0; k < mxf->packages_count; k++) {
712 temp_package = mxf_resolve_strong_ref(mxf, &mxf->packages_refs[k], SourcePackage);
715 if (!memcmp(temp_package->package_uid, component->source_package_uid, 16)) {
716 source_package = temp_package;
720 if (!source_package) {
721 av_log(mxf->fc, AV_LOG_ERROR, "material track %d: no corresponding source package found\n", material_track->track_id);
724 for (k = 0; k < source_package->tracks_count; k++) {
725 if (!(temp_track = mxf_resolve_strong_ref(mxf, &source_package->tracks_refs[k], Track))) {
726 av_log(mxf->fc, AV_LOG_ERROR, "could not resolve source track strong ref\n");
729 if (temp_track->track_id == component->source_track_id) {
730 source_track = temp_track;
735 av_log(mxf->fc, AV_LOG_ERROR, "material track %d: no corresponding source track found\n", material_track->track_id);
742 st = av_new_stream(mxf->fc, source_track->track_id);
743 st->priv_data = source_track;
744 st->duration = component->duration;
745 if (st->duration == -1)
746 st->duration = AV_NOPTS_VALUE;
747 st->start_time = component->start_position;
748 av_set_pts_info(st, 64, material_track->edit_rate.num, material_track->edit_rate.den);
750 if (!(source_track->sequence = mxf_resolve_strong_ref(mxf, &source_track->sequence_ref, Sequence))) {
751 av_log(mxf->fc, AV_LOG_ERROR, "could not resolve source track sequence strong ref\n");
756 PRINT_KEY("data definition ul", source_track->sequence->data_definition_ul);
758 st->codec->codec_type = mxf_get_codec_type(mxf_data_definition_uls, &source_track->sequence->data_definition_ul);
760 source_package->descriptor = mxf_resolve_strong_ref(mxf, &source_package->descriptor_ref, AnyType);
761 if (source_package->descriptor) {
762 if (source_package->descriptor->type == MultipleDescriptor) {
763 for (j = 0; j < source_package->descriptor->sub_descriptors_count; j++) {
764 MXFDescriptor *sub_descriptor = mxf_resolve_strong_ref(mxf, &source_package->descriptor->sub_descriptors_refs[j], Descriptor);
766 if (!sub_descriptor) {
767 av_log(mxf->fc, AV_LOG_ERROR, "could not resolve sub descriptor strong ref\n");
770 if (sub_descriptor->linked_track_id == source_track->track_id) {
771 descriptor = sub_descriptor;
775 } else if (source_package->descriptor->type == Descriptor)
776 descriptor = source_package->descriptor;
779 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("essence codec ul", descriptor->essence_codec_ul);
784 PRINT_KEY("essence container ul", descriptor->essence_container_ul);
786 essence_container_ul = &descriptor->essence_container_ul;
787 /* HACK: replacing the original key with mxf_encrypted_essence_container
788 * is not allowed according to s429-6, try to find correct information anyway */
789 if (IS_KLV_KEY(essence_container_ul, mxf_encrypted_essence_container)) {
790 av_log(mxf->fc, AV_LOG_INFO, "broken encrypted mxf file\n");
791 for (k = 0; k < mxf->metadata_sets_count; k++) {
792 MXFMetadataSet *metadata = mxf->metadata_sets[k];
793 if (metadata->type == CryptoContext) {
794 essence_container_ul = &((MXFCryptoContext *)metadata)->source_container_ul;
799 /* TODO: drop PictureEssenceCoding and SoundEssenceCompression, only check EssenceContainer */
800 codec_ul = mxf_get_codec_ul(mxf_codec_uls, &descriptor->essence_codec_ul);
801 st->codec->codec_id = codec_ul->id;
802 if (descriptor->extradata) {
803 st->codec->extradata = descriptor->extradata;
804 st->codec->extradata_size = descriptor->extradata_size;
806 if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
807 container_ul = mxf_get_codec_ul(mxf_picture_essence_container_uls, essence_container_ul);
808 if (st->codec->codec_id == CODEC_ID_NONE)
809 st->codec->codec_id = container_ul->id;
810 st->codec->width = descriptor->width;
811 st->codec->height = descriptor->height;
812 st->codec->bits_per_sample = descriptor->bits_per_sample; /* Uncompressed */
813 st->need_parsing = 2; /* only parse headers */
814 } else if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
815 container_ul = mxf_get_codec_ul(mxf_sound_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_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 if (descriptor->essence_container_ul[13] == 0x01) /* D-10 Mapping */
833 st->codec->channels = 8; /* force channels to 8 */
834 } else if (st->codec->codec_id == CODEC_ID_MP2) {
835 st->need_parsing = 1;
838 if (container_ul && container_ul->wrapping == Clip) {
839 dprintf("stream %d: clip wrapped essence\n", st->index);
840 st->need_parsing = 1;
846 static const MXFMetadataReadTableEntry mxf_metadata_read_table[] = {
847 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x18,0x00 }, mxf_read_metadata_content_storage, 0, AnyType },
848 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x37,0x00 }, mxf_read_metadata_source_package, sizeof(MXFPackage), SourcePackage },
849 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x36,0x00 }, mxf_read_metadata_material_package, sizeof(MXFPackage), MaterialPackage },
850 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x0F,0x00 }, mxf_read_metadata_sequence, sizeof(MXFSequence), Sequence },
851 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x11,0x00 }, mxf_read_metadata_source_clip, sizeof(MXFStructuralComponent), SourceClip },
852 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x44,0x00 }, mxf_read_metadata_generic_descriptor, sizeof(MXFDescriptor), MultipleDescriptor },
853 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x42,0x00 }, mxf_read_metadata_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* Generic Sound */
854 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x28,0x00 }, mxf_read_metadata_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* CDCI */
855 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x29,0x00 }, mxf_read_metadata_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* RGBA */
856 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 }, mxf_read_metadata_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* MPEG 2 Video */
857 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 }, mxf_read_metadata_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* Wave */
858 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 }, mxf_read_metadata_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* AES3 */
859 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x3A,0x00 }, mxf_read_metadata_track, sizeof(MXFTrack), Track }, /* Static Track */
860 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x3B,0x00 }, mxf_read_metadata_track, sizeof(MXFTrack), Track }, /* Generic Track */
861 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x04,0x01,0x02,0x02,0x00,0x00 }, mxf_read_metadata_cryptographic_context, sizeof(MXFCryptoContext), CryptoContext },
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_sync(ByteIOContext *pb, const uint8_t *key, unsigned size)
868 for (i = 0; i < size && !url_feof(pb); i++) {
872 else if (b != key[i])
878 static int mxf_read_local_tags(MXFContext *mxf, KLVPacket *klv, int (*read_child)(), int ctx_size, enum MXFMetadataSetType type)
880 ByteIOContext *pb = &mxf->fc->pb;
881 MXFMetadataSet *ctx = ctx_size ? av_mallocz(ctx_size) : mxf;
882 uint64_t klv_end= url_ftell(pb) + klv->length;
884 while (url_ftell(pb) + 4 < klv_end) {
885 int tag = get_be16(pb);
886 int size = get_be16(pb); /* KLV specified by 0x53 */
887 uint64_t next= url_ftell(pb) + 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 0x%04X with 0 size\n", tag);
893 if(ctx_size && tag == 0x3C0A)
894 get_buffer(pb, ctx->uid, 16);
896 read_child(ctx, pb, tag, size);
898 url_fseek(pb, next, SEEK_SET);
900 if (ctx_size) ctx->type = type;
901 return ctx_size ? mxf_add_metadata_set(mxf, ctx) : 0;
904 static int mxf_read_header(AVFormatContext *s, AVFormatParameters *ap)
906 MXFContext *mxf = s->priv_data;
909 mxf->sync_key = mxf_essence_element_key;
910 if (!mxf_read_sync(&s->pb, mxf_header_partition_pack_key, 14)) {
911 av_log(s, AV_LOG_ERROR, "could not find header partition pack key\n");
914 url_fseek(&s->pb, -14, SEEK_CUR);
916 while (!url_feof(&s->pb)) {
917 const MXFMetadataReadTableEntry *metadata;
919 if (klv_read_packet(&klv, &s->pb) < 0) {
920 av_log(s, AV_LOG_ERROR, "error reading KLV packet\n");
924 PRINT_KEY("read header", klv.key);
926 if (IS_KLV_KEY(klv.key, mxf_encrypted_triplet_key) ||
927 IS_KLV_KEY(klv.key, mxf_essence_element_key)) {
928 /* FIXME avoid seek */
929 url_fseek(&s->pb, klv.offset, SEEK_SET);
933 for (metadata = mxf_metadata_read_table; metadata->read; metadata++) {
934 if (IS_KLV_KEY(klv.key, metadata->key)) {
935 if (mxf_read_local_tags(mxf, &klv, metadata->read, metadata->ctx_size, metadata->type) < 0) {
936 av_log(s, AV_LOG_ERROR, "error reading header metadata\n");
943 url_fskip(&s->pb, klv.length);
945 return mxf_parse_structural_metadata(mxf);
948 static int mxf_read_close(AVFormatContext *s)
950 MXFContext *mxf = s->priv_data;
953 av_freep(&mxf->packages_refs);
954 for (i = 0; i < mxf->metadata_sets_count; i++) {
955 switch (mxf->metadata_sets[i]->type) {
956 case MultipleDescriptor:
957 av_freep(&((MXFDescriptor *)mxf->metadata_sets[i])->sub_descriptors_refs);
960 av_freep(&((MXFSequence *)mxf->metadata_sets[i])->structural_components_refs);
963 case MaterialPackage:
964 av_freep(&((MXFPackage *)mxf->metadata_sets[i])->tracks_refs);
969 av_freep(&mxf->metadata_sets[i]);
971 av_freep(&mxf->metadata_sets);
972 av_freep(&mxf->aesc);
976 static int mxf_probe(AVProbeData *p) {
977 uint8_t *bufp = p->buf;
978 uint8_t *end = p->buf + p->buf_size;
980 if (p->buf_size < sizeof(mxf_header_partition_pack_key))
983 /* Must skip Run-In Sequence and search for MXF header partition pack key SMPTE 377M 5.5 */
984 end -= sizeof(mxf_header_partition_pack_key);
985 for (; bufp < end; bufp++) {
986 if (IS_KLV_KEY(bufp, mxf_header_partition_pack_key))
987 return AVPROBE_SCORE_MAX;
992 /* rudimentary binary seek */
993 /* XXX: use MXF Index */
994 static int mxf_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
996 MXFContext *mxf = s->priv_data;
997 AVStream *st = s->streams[stream_index];
1002 if (sample_time < 0)
1004 seconds = av_rescale(sample_time, st->time_base.num, st->time_base.den);
1005 url_fseek(&s->pb, (s->bit_rate * seconds) >> 3, SEEK_SET);
1006 if (!mxf_read_sync(&s->pb, mxf->sync_key, 12))
1010 url_fseek(&s->pb, -12, SEEK_CUR);
1011 av_update_cur_dts(s, st, sample_time);
1015 AVInputFormat mxf_demuxer = {