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 "libavutil/avassert.h"
50 #include "libavutil/mathematics.h"
51 #include "libavcodec/bytestream.h"
52 #include "libavutil/intreadwrite.h"
53 #include "libavutil/parseutils.h"
54 #include "libavutil/timecode.h"
55 #include "libavutil/opt.h"
60 #define MXF_MAX_CHUNK_SIZE (32 << 20)
79 OPSONYOpt, /* FATE sample, violates the spec in places */
88 typedef struct MXFPartition {
91 MXFPartitionType type;
92 uint64_t previous_partition;
95 int64_t this_partition;
96 int64_t essence_offset; ///< absolute offset of essence
97 int64_t essence_length;
99 int64_t header_byte_count;
100 int64_t index_byte_count;
102 int64_t pack_ofs; ///< absolute offset of pack in file, including run-in
104 KLVPacket first_essence_klv;
107 typedef struct MXFCryptoContext {
109 enum MXFMetadataSetType type;
110 UID source_container_ul;
113 typedef struct MXFStructuralComponent {
115 enum MXFMetadataSetType type;
116 UID source_package_ul;
117 UID source_package_uid;
118 UID data_definition_ul;
120 int64_t start_position;
122 } MXFStructuralComponent;
124 typedef struct MXFSequence {
126 enum MXFMetadataSetType type;
127 UID data_definition_ul;
128 UID *structural_components_refs;
129 int structural_components_count;
134 typedef struct MXFTrack {
136 enum MXFMetadataSetType type;
139 struct AVRational rate;
141 } MXFTimecodeComponent;
145 enum MXFMetadataSetType type;
146 UID input_segment_ref;
147 } MXFPulldownComponent;
151 enum MXFMetadataSetType type;
152 UID *structural_components_refs;
153 int structural_components_count;
159 enum MXFMetadataSetType type;
166 enum MXFMetadataSetType type;
167 MXFSequence *sequence; /* mandatory, and only one */
171 uint8_t track_number[4];
172 AVRational edit_rate;
174 uint64_t sample_count;
175 int64_t original_duration; /* st->duration in SampleRate/EditRate units */
178 MXFWrappingScheme wrapping;
179 int edit_units_per_packet; /* how many edit units to read at a time (PCM, ClipWrapped) */
182 typedef struct MXFDescriptor {
184 enum MXFMetadataSetType type;
185 UID essence_container_ul;
186 UID essence_codec_ul;
188 AVRational sample_rate;
189 AVRational aspect_ratio;
191 int height; /* Field height, not frame height */
192 int frame_layout; /* See MXFFrameLayout enum */
193 int video_line_map[2];
194 #define MXF_FIELD_DOMINANCE_DEFAULT 0
195 #define MXF_FIELD_DOMINANCE_FF 1 /* coded first, displayed first */
196 #define MXF_FIELD_DOMINANCE_FL 2 /* coded first, displayed last */
200 int64_t duration; /* ContainerDuration optional property */
201 unsigned int component_depth;
202 unsigned int horiz_subsampling;
203 unsigned int vert_subsampling;
204 UID *sub_descriptors_refs;
205 int sub_descriptors_count;
209 enum AVPixelFormat pix_fmt;
212 typedef struct MXFIndexTableSegment {
214 enum MXFMetadataSetType type;
215 int edit_unit_byte_count;
218 AVRational index_edit_rate;
219 uint64_t index_start_position;
220 uint64_t index_duration;
221 int8_t *temporal_offset_entries;
223 uint64_t *stream_offset_entries;
224 int nb_index_entries;
225 } MXFIndexTableSegment;
227 typedef struct MXFPackage {
229 enum MXFMetadataSetType type;
234 MXFDescriptor *descriptor; /* only one */
241 typedef struct MXFEssenceContainerData {
243 enum MXFMetadataSetType type;
248 } MXFEssenceContainerData;
250 typedef struct MXFMetadataSet {
252 enum MXFMetadataSetType type;
255 /* decoded index table */
256 typedef struct MXFIndexTable {
259 int nb_ptses; /* number of PTSes or total duration of index */
260 int64_t first_dts; /* DTS = EditUnit + first_dts */
261 int64_t *ptses; /* maps EditUnit -> PTS */
263 MXFIndexTableSegment **segments; /* sorted by IndexStartPosition */
264 AVIndexEntry *fake_index; /* used for calling ff_index_search_timestamp() */
265 int8_t *offsets; /* temporal offsets for display order to stored order conversion */
268 typedef struct MXFContext {
269 const AVClass *class; /**< Class for private options. */
270 MXFPartition *partitions;
271 unsigned partitions_count;
275 UID *essence_container_data_refs;
276 int essence_container_data_count;
277 MXFMetadataSet **metadata_sets;
278 int metadata_sets_count;
282 int local_tags_count;
283 uint64_t footer_partition;
284 KLVPacket current_klv_data;
286 MXFPartition *current_partition;
287 int parsing_backward;
288 int64_t last_forward_tell;
289 int last_forward_partition;
291 MXFIndexTable *index_tables;
295 /* NOTE: klv_offset is not set (-1) for local keys */
296 typedef int MXFMetadataReadFunc(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset);
298 typedef struct MXFMetadataReadTableEntry {
300 MXFMetadataReadFunc *read;
302 enum MXFMetadataSetType type;
303 } MXFMetadataReadTableEntry;
305 static int mxf_read_close(AVFormatContext *s);
307 /* partial keys to match */
308 static const uint8_t mxf_header_partition_pack_key[] = { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02 };
309 static const uint8_t mxf_essence_element_key[] = { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01 };
310 static const uint8_t mxf_avid_essence_element_key[] = { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0e,0x04,0x03,0x01 };
311 static const uint8_t mxf_canopus_essence_element_key[] = { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x0a,0x0e,0x0f,0x03,0x01 };
312 static const uint8_t mxf_system_item_key_cp[] = { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x03,0x01,0x04 };
313 static const uint8_t mxf_system_item_key_gc[] = { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x03,0x01,0x14 };
314 static const uint8_t mxf_klv_key[] = { 0x06,0x0e,0x2b,0x34 };
315 /* complete keys to match */
316 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 };
317 static const uint8_t mxf_encrypted_triplet_key[] = { 0x06,0x0e,0x2b,0x34,0x02,0x04,0x01,0x07,0x0d,0x01,0x03,0x01,0x02,0x7e,0x01,0x00 };
318 static const uint8_t mxf_encrypted_essence_container[] = { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x0d,0x01,0x03,0x01,0x02,0x0b,0x01,0x00 };
319 static const uint8_t mxf_random_index_pack_key[] = { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x11,0x01,0x00 };
320 static const uint8_t mxf_sony_mpeg4_extradata[] = { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0e,0x06,0x06,0x02,0x02,0x01,0x00,0x00 };
321 static const uint8_t mxf_avid_project_name[] = { 0xa5,0xfb,0x7b,0x25,0xf6,0x15,0x94,0xb9,0x62,0xfc,0x37,0x17,0x49,0x2d,0x42,0xbf };
322 static const uint8_t mxf_jp2k_rsiz[] = { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02,0x01,0x00 };
323 static const uint8_t mxf_indirect_value_utf16le[] = { 0x4c,0x00,0x02,0x10,0x01,0x00,0x00,0x00,0x00,0x06,0x0e,0x2b,0x34,0x01,0x04,0x01,0x01 };
324 static const uint8_t mxf_indirect_value_utf16be[] = { 0x42,0x01,0x10,0x02,0x00,0x00,0x00,0x00,0x00,0x06,0x0e,0x2b,0x34,0x01,0x04,0x01,0x01 };
326 #define IS_KLV_KEY(x, y) (!memcmp(x, y, sizeof(y)))
328 static void mxf_free_metadataset(MXFMetadataSet **ctx, int freectx)
330 MXFIndexTableSegment *seg;
331 switch ((*ctx)->type) {
333 av_freep(&((MXFDescriptor *)*ctx)->extradata);
335 case MultipleDescriptor:
336 av_freep(&((MXFDescriptor *)*ctx)->sub_descriptors_refs);
339 av_freep(&((MXFSequence *)*ctx)->structural_components_refs);
342 av_freep(&((MXFEssenceGroup *)*ctx)->structural_components_refs);
345 case MaterialPackage:
346 av_freep(&((MXFPackage *)*ctx)->tracks_refs);
347 av_freep(&((MXFPackage *)*ctx)->name);
348 av_freep(&((MXFPackage *)*ctx)->comment_refs);
351 av_freep(&((MXFTaggedValue *)*ctx)->name);
352 av_freep(&((MXFTaggedValue *)*ctx)->value);
355 av_freep(&((MXFTrack *)*ctx)->name);
357 case IndexTableSegment:
358 seg = (MXFIndexTableSegment *)*ctx;
359 av_freep(&seg->temporal_offset_entries);
360 av_freep(&seg->flag_entries);
361 av_freep(&seg->stream_offset_entries);
369 static int64_t klv_decode_ber_length(AVIOContext *pb)
371 uint64_t size = avio_r8(pb);
372 if (size & 0x80) { /* long form */
373 int bytes_num = size & 0x7f;
374 /* SMPTE 379M 5.3.4 guarantee that bytes_num must not exceed 8 bytes */
376 return AVERROR_INVALIDDATA;
379 size = size << 8 | avio_r8(pb);
381 if (size > INT64_MAX)
382 return AVERROR_INVALIDDATA;
386 static int mxf_read_sync(AVIOContext *pb, const uint8_t *key, unsigned size)
389 for (i = 0; i < size && !avio_feof(pb); i++) {
393 else if (b != key[i])
399 static int klv_read_packet(KLVPacket *klv, AVIOContext *pb)
402 if (!mxf_read_sync(pb, mxf_klv_key, 4))
403 return AVERROR_INVALIDDATA;
404 klv->offset = avio_tell(pb) - 4;
405 memcpy(klv->key, mxf_klv_key, 4);
406 avio_read(pb, klv->key + 4, 12);
407 length = klv_decode_ber_length(pb);
410 klv->length = length;
412 if (pos > INT64_MAX - length)
413 return AVERROR_INVALIDDATA;
414 klv->next_klv = pos + length;
418 static int mxf_get_stream_index(AVFormatContext *s, KLVPacket *klv, int body_sid)
422 for (i = 0; i < s->nb_streams; i++) {
423 MXFTrack *track = s->streams[i]->priv_data;
425 if (track && (!body_sid || !track->body_sid || track->body_sid == body_sid) && !memcmp(klv->key + sizeof(mxf_essence_element_key), track->track_number, sizeof(track->track_number)))
428 /* return 0 if only one stream, for OP Atom files with 0 as track number */
429 return s->nb_streams == 1 && s->streams[0]->priv_data ? 0 : -1;
432 static int find_body_sid_by_absolute_offset(MXFContext *mxf, int64_t offset)
434 // we look for partition where the offset is placed
439 b = mxf->partitions_count;
443 pack_ofs = mxf->partitions[m].pack_ofs;
444 if (pack_ofs <= offset)
452 return mxf->partitions[a].body_sid;
455 static int mxf_get_eia608_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt, int64_t length)
457 int count = avio_rb16(s->pb);
458 int cdp_identifier, cdp_length, cdp_footer_id, ccdata_id, cc_count;
459 int line_num, sample_coding, sample_count;
460 int did, sdid, data_length;
464 av_log(s, AV_LOG_WARNING, "unsupported multiple ANC packets (%d) per KLV packet\n", count);
466 for (i = 0; i < count; i++) {
468 av_log(s, AV_LOG_ERROR, "error reading s436m packet %"PRId64"\n", length);
469 return AVERROR_INVALIDDATA;
471 line_num = avio_rb16(s->pb);
472 avio_r8(s->pb); // wrapping type
473 sample_coding = avio_r8(s->pb);
474 sample_count = avio_rb16(s->pb);
475 length -= 6 + 8 + sample_count;
476 if (line_num != 9 && line_num != 11)
478 if (sample_coding == 7 || sample_coding == 8 || sample_coding == 9) {
479 av_log(s, AV_LOG_WARNING, "unsupported s436m 10 bit sample coding\n");
483 return AVERROR_INVALIDDATA;
485 avio_rb32(s->pb); // array count
486 avio_rb32(s->pb); // array elem size
487 did = avio_r8(s->pb);
488 sdid = avio_r8(s->pb);
489 data_length = avio_r8(s->pb);
490 if (did != 0x61 || sdid != 1) {
491 av_log(s, AV_LOG_WARNING, "unsupported did or sdid: %x %x\n", did, sdid);
494 cdp_identifier = avio_rb16(s->pb); // cdp id
495 if (cdp_identifier != 0x9669) {
496 av_log(s, AV_LOG_ERROR, "wrong cdp identifier %x\n", cdp_identifier);
497 return AVERROR_INVALIDDATA;
499 cdp_length = avio_r8(s->pb);
500 avio_r8(s->pb); // cdp_frame_rate
501 avio_r8(s->pb); // cdp_flags
502 avio_rb16(s->pb); // cdp_hdr_sequence_cntr
503 ccdata_id = avio_r8(s->pb); // ccdata_id
504 if (ccdata_id != 0x72) {
505 av_log(s, AV_LOG_ERROR, "wrong cdp data section %x\n", ccdata_id);
506 return AVERROR_INVALIDDATA;
508 cc_count = avio_r8(s->pb) & 0x1f;
509 ret = av_get_packet(s->pb, pkt, cc_count * 3);
512 if (cdp_length - 9 - 4 < cc_count * 3) {
513 av_log(s, AV_LOG_ERROR, "wrong cdp size %d cc count %d\n", cdp_length, cc_count);
514 return AVERROR_INVALIDDATA;
516 avio_skip(s->pb, data_length - 9 - 4 - cc_count * 3);
517 cdp_footer_id = avio_r8(s->pb);
518 if (cdp_footer_id != 0x74) {
519 av_log(s, AV_LOG_ERROR, "wrong cdp footer section %x\n", cdp_footer_id);
520 return AVERROR_INVALIDDATA;
522 avio_rb16(s->pb); // cdp_ftr_sequence_cntr
523 avio_r8(s->pb); // packet_checksum
530 /* XXX: use AVBitStreamFilter */
531 static int mxf_get_d10_aes3_packet(AVIOContext *pb, AVStream *st, AVPacket *pkt, int64_t length)
533 const uint8_t *buf_ptr, *end_ptr;
537 if (length > 61444) /* worst case PAL 1920 samples 8 channels */
538 return AVERROR_INVALIDDATA;
539 length = av_get_packet(pb, pkt, length);
542 data_ptr = pkt->data;
543 end_ptr = pkt->data + length;
544 buf_ptr = pkt->data + 4; /* skip SMPTE 331M header */
545 for (; end_ptr - buf_ptr >= st->codecpar->channels * 4; ) {
546 for (i = 0; i < st->codecpar->channels; i++) {
547 uint32_t sample = bytestream_get_le32(&buf_ptr);
548 if (st->codecpar->bits_per_coded_sample == 24)
549 bytestream_put_le24(&data_ptr, (sample >> 4) & 0xffffff);
551 bytestream_put_le16(&data_ptr, (sample >> 12) & 0xffff);
553 buf_ptr += 32 - st->codecpar->channels*4; // always 8 channels stored SMPTE 331M
555 av_shrink_packet(pkt, data_ptr - pkt->data);
559 static int mxf_decrypt_triplet(AVFormatContext *s, AVPacket *pkt, KLVPacket *klv)
561 static const uint8_t checkv[16] = {0x43, 0x48, 0x55, 0x4b, 0x43, 0x48, 0x55, 0x4b, 0x43, 0x48, 0x55, 0x4b, 0x43, 0x48, 0x55, 0x4b};
562 MXFContext *mxf = s->priv_data;
563 AVIOContext *pb = s->pb;
564 int64_t end = avio_tell(pb) + klv->length;
567 uint64_t plaintext_size;
573 if (!mxf->aesc && s->key && s->keylen == 16) {
574 mxf->aesc = av_aes_alloc();
576 return AVERROR(ENOMEM);
577 av_aes_init(mxf->aesc, s->key, 128, 1);
580 size = klv_decode_ber_length(pb);
585 klv_decode_ber_length(pb);
586 plaintext_size = avio_rb64(pb);
588 klv_decode_ber_length(pb);
589 avio_read(pb, klv->key, 16);
590 if (!IS_KLV_KEY(klv, mxf_essence_element_key))
591 return AVERROR_INVALIDDATA;
593 body_sid = find_body_sid_by_absolute_offset(mxf, klv->offset);
594 index = mxf_get_stream_index(s, klv, body_sid);
596 return AVERROR_INVALIDDATA;
598 klv_decode_ber_length(pb);
599 orig_size = avio_rb64(pb);
600 if (orig_size < plaintext_size)
601 return AVERROR_INVALIDDATA;
603 size = klv_decode_ber_length(pb);
604 if (size < 32 || size - 32 < orig_size)
605 return AVERROR_INVALIDDATA;
606 avio_read(pb, ivec, 16);
607 avio_read(pb, tmpbuf, 16);
609 av_aes_crypt(mxf->aesc, tmpbuf, tmpbuf, 1, ivec, 1);
610 if (memcmp(tmpbuf, checkv, 16))
611 av_log(s, AV_LOG_ERROR, "probably incorrect decryption key\n");
613 size = av_get_packet(pb, pkt, size);
616 else if (size < plaintext_size)
617 return AVERROR_INVALIDDATA;
618 size -= plaintext_size;
620 av_aes_crypt(mxf->aesc, &pkt->data[plaintext_size],
621 &pkt->data[plaintext_size], size >> 4, ivec, 1);
622 av_shrink_packet(pkt, orig_size);
623 pkt->stream_index = index;
624 avio_skip(pb, end - avio_tell(pb));
628 static int mxf_read_primer_pack(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
630 MXFContext *mxf = arg;
631 int item_num = avio_rb32(pb);
632 int item_len = avio_rb32(pb);
634 if (item_len != 18) {
635 avpriv_request_sample(pb, "Primer pack item length %d", item_len);
636 return AVERROR_PATCHWELCOME;
638 if (item_num > 65536 || item_num < 0) {
639 av_log(mxf->fc, AV_LOG_ERROR, "item_num %d is too large\n", item_num);
640 return AVERROR_INVALIDDATA;
643 av_log(mxf->fc, AV_LOG_VERBOSE, "Multiple primer packs\n");
644 av_free(mxf->local_tags);
645 mxf->local_tags_count = 0;
646 mxf->local_tags = av_calloc(item_num, item_len);
647 if (!mxf->local_tags)
648 return AVERROR(ENOMEM);
649 mxf->local_tags_count = item_num;
650 avio_read(pb, mxf->local_tags, item_num*item_len);
654 static int mxf_read_partition_pack(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
656 MXFContext *mxf = arg;
657 AVFormatContext *s = mxf->fc;
658 MXFPartition *partition, *tmp_part;
660 uint64_t footer_partition;
661 uint32_t nb_essence_containers;
663 if (mxf->partitions_count >= INT_MAX / 2)
664 return AVERROR_INVALIDDATA;
666 tmp_part = av_realloc_array(mxf->partitions, mxf->partitions_count + 1, sizeof(*mxf->partitions));
668 return AVERROR(ENOMEM);
669 mxf->partitions = tmp_part;
671 if (mxf->parsing_backward) {
672 /* insert the new partition pack in the middle
673 * this makes the entries in mxf->partitions sorted by offset */
674 memmove(&mxf->partitions[mxf->last_forward_partition+1],
675 &mxf->partitions[mxf->last_forward_partition],
676 (mxf->partitions_count - mxf->last_forward_partition)*sizeof(*mxf->partitions));
677 partition = mxf->current_partition = &mxf->partitions[mxf->last_forward_partition];
679 mxf->last_forward_partition++;
680 partition = mxf->current_partition = &mxf->partitions[mxf->partitions_count];
683 memset(partition, 0, sizeof(*partition));
684 mxf->partitions_count++;
685 partition->pack_length = avio_tell(pb) - klv_offset + size;
686 partition->pack_ofs = klv_offset;
690 partition->type = Header;
693 partition->type = BodyPartition;
696 partition->type = Footer;
699 av_log(mxf->fc, AV_LOG_ERROR, "unknown partition type %i\n", uid[13]);
700 return AVERROR_INVALIDDATA;
703 /* consider both footers to be closed (there is only Footer and CompleteFooter) */
704 partition->closed = partition->type == Footer || !(uid[14] & 1);
705 partition->complete = uid[14] > 2;
707 partition->kag_size = avio_rb32(pb);
708 partition->this_partition = avio_rb64(pb);
709 partition->previous_partition = avio_rb64(pb);
710 footer_partition = avio_rb64(pb);
711 partition->header_byte_count = avio_rb64(pb);
712 partition->index_byte_count = avio_rb64(pb);
713 partition->index_sid = avio_rb32(pb);
714 partition->body_offset = avio_rb64(pb);
715 partition->body_sid = avio_rb32(pb);
716 if (avio_read(pb, op, sizeof(UID)) != sizeof(UID)) {
717 av_log(mxf->fc, AV_LOG_ERROR, "Failed reading UID\n");
718 return AVERROR_INVALIDDATA;
720 nb_essence_containers = avio_rb32(pb);
722 if (partition->type == Header) {
724 snprintf(str, sizeof(str), "%08x.%08x.%08x.%08x", AV_RB32(&op[0]), AV_RB32(&op[4]), AV_RB32(&op[8]), AV_RB32(&op[12]));
725 av_dict_set(&s->metadata, "operational_pattern_ul", str, 0);
728 if (partition->this_partition &&
729 partition->previous_partition == partition->this_partition) {
730 av_log(mxf->fc, AV_LOG_ERROR,
731 "PreviousPartition equal to ThisPartition %"PRIx64"\n",
732 partition->previous_partition);
733 /* override with the actual previous partition offset */
734 if (!mxf->parsing_backward && mxf->last_forward_partition > 1) {
736 mxf->partitions + mxf->last_forward_partition - 2;
737 partition->previous_partition = prev->this_partition;
739 /* if no previous body partition are found point to the header
741 if (partition->previous_partition == partition->this_partition)
742 partition->previous_partition = 0;
743 av_log(mxf->fc, AV_LOG_ERROR,
744 "Overriding PreviousPartition with %"PRIx64"\n",
745 partition->previous_partition);
748 /* some files don't have FooterPartition set in every partition */
749 if (footer_partition) {
750 if (mxf->footer_partition && mxf->footer_partition != footer_partition) {
751 av_log(mxf->fc, AV_LOG_ERROR,
752 "inconsistent FooterPartition value: %"PRIu64" != %"PRIu64"\n",
753 mxf->footer_partition, footer_partition);
755 mxf->footer_partition = footer_partition;
759 av_log(mxf->fc, AV_LOG_TRACE,
760 "PartitionPack: ThisPartition = 0x%"PRIX64
761 ", PreviousPartition = 0x%"PRIX64", "
762 "FooterPartition = 0x%"PRIX64", IndexSID = %i, BodySID = %i\n",
763 partition->this_partition,
764 partition->previous_partition, footer_partition,
765 partition->index_sid, partition->body_sid);
767 /* sanity check PreviousPartition if set */
768 //NOTE: this isn't actually enough, see mxf_seek_to_previous_partition()
769 if (partition->previous_partition &&
770 mxf->run_in + partition->previous_partition >= klv_offset) {
771 av_log(mxf->fc, AV_LOG_ERROR,
772 "PreviousPartition points to this partition or forward\n");
773 return AVERROR_INVALIDDATA;
776 if (op[12] == 1 && op[13] == 1) mxf->op = OP1a;
777 else if (op[12] == 1 && op[13] == 2) mxf->op = OP1b;
778 else if (op[12] == 1 && op[13] == 3) mxf->op = OP1c;
779 else if (op[12] == 2 && op[13] == 1) mxf->op = OP2a;
780 else if (op[12] == 2 && op[13] == 2) mxf->op = OP2b;
781 else if (op[12] == 2 && op[13] == 3) mxf->op = OP2c;
782 else if (op[12] == 3 && op[13] == 1) mxf->op = OP3a;
783 else if (op[12] == 3 && op[13] == 2) mxf->op = OP3b;
784 else if (op[12] == 3 && op[13] == 3) mxf->op = OP3c;
785 else if (op[12] == 64&& op[13] == 1) mxf->op = OPSONYOpt;
786 else if (op[12] == 0x10) {
787 /* SMPTE 390m: "There shall be exactly one essence container"
788 * The following block deals with files that violate this, namely:
789 * 2011_DCPTEST_24FPS.V.mxf - two ECs, OP1a
790 * abcdefghiv016f56415e.mxf - zero ECs, OPAtom, output by Avid AirSpeed */
791 if (nb_essence_containers != 1) {
792 MXFOP op = nb_essence_containers ? OP1a : OPAtom;
796 av_log(mxf->fc, AV_LOG_WARNING,
797 "\"OPAtom\" with %"PRIu32" ECs - assuming %s\n",
798 nb_essence_containers,
799 op == OP1a ? "OP1a" : "OPAtom");
805 av_log(mxf->fc, AV_LOG_ERROR, "unknown operational pattern: %02xh %02xh - guessing OP1a\n", op[12], op[13]);
809 if (partition->kag_size <= 0 || partition->kag_size > (1 << 20)) {
810 av_log(mxf->fc, AV_LOG_WARNING, "invalid KAGSize %"PRId32" - guessing ",
811 partition->kag_size);
813 if (mxf->op == OPSONYOpt)
814 partition->kag_size = 512;
816 partition->kag_size = 1;
818 av_log(mxf->fc, AV_LOG_WARNING, "%"PRId32"\n", partition->kag_size);
824 static int mxf_add_metadata_set(MXFContext *mxf, void *metadata_set)
826 MXFMetadataSet **tmp;
828 tmp = av_realloc_array(mxf->metadata_sets, mxf->metadata_sets_count + 1, sizeof(*mxf->metadata_sets));
830 return AVERROR(ENOMEM);
831 mxf->metadata_sets = tmp;
832 mxf->metadata_sets[mxf->metadata_sets_count] = metadata_set;
833 mxf->metadata_sets_count++;
837 static int mxf_read_cryptographic_context(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
839 MXFCryptoContext *cryptocontext = arg;
841 return AVERROR_INVALIDDATA;
842 if (IS_KLV_KEY(uid, mxf_crypto_source_container_ul))
843 avio_read(pb, cryptocontext->source_container_ul, 16);
847 static int mxf_read_strong_ref_array(AVIOContext *pb, UID **refs, int *count)
849 *count = avio_rb32(pb);
850 *refs = av_calloc(*count, sizeof(UID));
853 return AVERROR(ENOMEM);
855 avio_skip(pb, 4); /* useless size of objects, always 16 according to specs */
856 avio_read(pb, (uint8_t *)*refs, *count * sizeof(UID));
860 static inline int mxf_read_utf16_string(AVIOContext *pb, int size, char** str, int be)
865 if (size < 0 || size > INT_MAX/2)
866 return AVERROR(EINVAL);
868 buf_size = size + size / 2 + 1;
869 *str = av_malloc(buf_size);
871 return AVERROR(ENOMEM);
874 ret = avio_get_str16be(pb, size, *str, buf_size);
876 ret = avio_get_str16le(pb, size, *str, buf_size);
886 #define READ_STR16(type, big_endian) \
887 static int mxf_read_utf16 ## type ##_string(AVIOContext *pb, int size, char** str) \
889 return mxf_read_utf16_string(pb, size, str, big_endian); \
895 static int mxf_read_content_storage(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
897 MXFContext *mxf = arg;
900 if (mxf->packages_refs)
901 av_log(mxf->fc, AV_LOG_VERBOSE, "Multiple packages_refs\n");
902 av_free(mxf->packages_refs);
903 return mxf_read_strong_ref_array(pb, &mxf->packages_refs, &mxf->packages_count);
905 av_free(mxf->essence_container_data_refs);
906 return mxf_read_strong_ref_array(pb, &mxf->essence_container_data_refs, &mxf->essence_container_data_count);
911 static int mxf_read_source_clip(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
913 MXFStructuralComponent *source_clip = arg;
916 source_clip->duration = avio_rb64(pb);
919 source_clip->start_position = avio_rb64(pb);
922 /* UMID, only get last 16 bytes */
923 avio_read(pb, source_clip->source_package_ul, 16);
924 avio_read(pb, source_clip->source_package_uid, 16);
927 source_clip->source_track_id = avio_rb32(pb);
933 static int mxf_read_timecode_component(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
935 MXFTimecodeComponent *mxf_timecode = arg;
938 mxf_timecode->start_frame = avio_rb64(pb);
941 mxf_timecode->rate = (AVRational){avio_rb16(pb), 1};
944 mxf_timecode->drop_frame = avio_r8(pb);
950 static int mxf_read_pulldown_component(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
952 MXFPulldownComponent *mxf_pulldown = arg;
955 avio_read(pb, mxf_pulldown->input_segment_ref, 16);
961 static int mxf_read_track(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
963 MXFTrack *track = arg;
966 track->track_id = avio_rb32(pb);
969 avio_read(pb, track->track_number, 4);
972 mxf_read_utf16be_string(pb, size, &track->name);
975 track->edit_rate.num = avio_rb32(pb);
976 track->edit_rate.den = avio_rb32(pb);
979 avio_read(pb, track->sequence_ref, 16);
985 static int mxf_read_sequence(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
987 MXFSequence *sequence = arg;
990 sequence->duration = avio_rb64(pb);
993 avio_read(pb, sequence->data_definition_ul, 16);
996 sequence->origin = avio_r8(pb);
999 return mxf_read_strong_ref_array(pb, &sequence->structural_components_refs,
1000 &sequence->structural_components_count);
1005 static int mxf_read_essence_group(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
1007 MXFEssenceGroup *essence_group = arg;
1010 essence_group->duration = avio_rb64(pb);
1013 return mxf_read_strong_ref_array(pb, &essence_group->structural_components_refs,
1014 &essence_group->structural_components_count);
1019 static int mxf_read_package(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
1021 MXFPackage *package = arg;
1024 return mxf_read_strong_ref_array(pb, &package->tracks_refs,
1025 &package->tracks_count);
1028 avio_read(pb, package->package_ul, 16);
1029 avio_read(pb, package->package_uid, 16);
1032 avio_read(pb, package->descriptor_ref, 16);
1035 return mxf_read_utf16be_string(pb, size, &package->name);
1037 return mxf_read_strong_ref_array(pb, &package->comment_refs,
1038 &package->comment_count);
1043 static int mxf_read_essence_container_data(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
1045 MXFEssenceContainerData *essence_data = arg;
1048 /* linked package umid UMID */
1049 avio_read(pb, essence_data->package_ul, 16);
1050 avio_read(pb, essence_data->package_uid, 16);
1053 essence_data->index_sid = avio_rb32(pb);
1056 essence_data->body_sid = avio_rb32(pb);
1062 static int mxf_read_index_entry_array(AVIOContext *pb, MXFIndexTableSegment *segment)
1066 segment->nb_index_entries = avio_rb32(pb);
1068 length = avio_rb32(pb);
1069 if(segment->nb_index_entries && length < 11)
1070 return AVERROR_INVALIDDATA;
1072 if (!(segment->temporal_offset_entries=av_calloc(segment->nb_index_entries, sizeof(*segment->temporal_offset_entries))) ||
1073 !(segment->flag_entries = av_calloc(segment->nb_index_entries, sizeof(*segment->flag_entries))) ||
1074 !(segment->stream_offset_entries = av_calloc(segment->nb_index_entries, sizeof(*segment->stream_offset_entries)))) {
1075 av_freep(&segment->temporal_offset_entries);
1076 av_freep(&segment->flag_entries);
1077 return AVERROR(ENOMEM);
1080 for (i = 0; i < segment->nb_index_entries; i++) {
1082 return AVERROR_INVALIDDATA;
1083 segment->temporal_offset_entries[i] = avio_r8(pb);
1084 avio_r8(pb); /* KeyFrameOffset */
1085 segment->flag_entries[i] = avio_r8(pb);
1086 segment->stream_offset_entries[i] = avio_rb64(pb);
1087 avio_skip(pb, length - 11);
1092 static int mxf_read_index_table_segment(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
1094 MXFIndexTableSegment *segment = arg;
1097 segment->edit_unit_byte_count = avio_rb32(pb);
1098 av_log(NULL, AV_LOG_TRACE, "EditUnitByteCount %d\n", segment->edit_unit_byte_count);
1101 segment->index_sid = avio_rb32(pb);
1102 av_log(NULL, AV_LOG_TRACE, "IndexSID %d\n", segment->index_sid);
1105 segment->body_sid = avio_rb32(pb);
1106 av_log(NULL, AV_LOG_TRACE, "BodySID %d\n", segment->body_sid);
1109 av_log(NULL, AV_LOG_TRACE, "IndexEntryArray found\n");
1110 return mxf_read_index_entry_array(pb, segment);
1112 segment->index_edit_rate.num = avio_rb32(pb);
1113 segment->index_edit_rate.den = avio_rb32(pb);
1114 av_log(NULL, AV_LOG_TRACE, "IndexEditRate %d/%d\n", segment->index_edit_rate.num,
1115 segment->index_edit_rate.den);
1118 segment->index_start_position = avio_rb64(pb);
1119 av_log(NULL, AV_LOG_TRACE, "IndexStartPosition %"PRId64"\n", segment->index_start_position);
1122 segment->index_duration = avio_rb64(pb);
1123 av_log(NULL, AV_LOG_TRACE, "IndexDuration %"PRId64"\n", segment->index_duration);
1129 static void mxf_read_pixel_layout(AVIOContext *pb, MXFDescriptor *descriptor)
1131 int code, value, ofs = 0;
1132 char layout[16] = {0}; /* not for printing, may end up not terminated on purpose */
1136 value = avio_r8(pb);
1137 av_log(NULL, AV_LOG_TRACE, "pixel layout: code %#x\n", code);
1140 layout[ofs++] = code;
1141 layout[ofs++] = value;
1143 break; /* don't read byte by byte on sneaky files filled with lots of non-zeroes */
1144 } while (code != 0); /* SMPTE 377M E.2.46 */
1146 ff_mxf_decode_pixel_layout(layout, &descriptor->pix_fmt);
1149 static int mxf_read_generic_descriptor(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
1151 MXFDescriptor *descriptor = arg;
1152 int entry_count, entry_size;
1156 return mxf_read_strong_ref_array(pb, &descriptor->sub_descriptors_refs,
1157 &descriptor->sub_descriptors_count);
1158 case 0x3002: /* ContainerDuration */
1159 descriptor->duration = avio_rb64(pb);
1162 avio_read(pb, descriptor->essence_container_ul, 16);
1165 avio_read(pb, descriptor->codec_ul, 16);
1168 descriptor->linked_track_id = avio_rb32(pb);
1170 case 0x3201: /* PictureEssenceCoding */
1171 avio_read(pb, descriptor->essence_codec_ul, 16);
1174 descriptor->width = avio_rb32(pb);
1177 descriptor->height = avio_rb32(pb);
1180 descriptor->frame_layout = avio_r8(pb);
1183 entry_count = avio_rb32(pb);
1184 entry_size = avio_rb32(pb);
1185 if (entry_size == 4) {
1186 if (entry_count > 0)
1187 descriptor->video_line_map[0] = avio_rb32(pb);
1189 descriptor->video_line_map[0] = 0;
1190 if (entry_count > 1)
1191 descriptor->video_line_map[1] = avio_rb32(pb);
1193 descriptor->video_line_map[1] = 0;
1195 av_log(NULL, AV_LOG_WARNING, "VideoLineMap element size %d currently not supported\n", entry_size);
1198 descriptor->aspect_ratio.num = avio_rb32(pb);
1199 descriptor->aspect_ratio.den = avio_rb32(pb);
1202 descriptor->field_dominance = avio_r8(pb);
1205 descriptor->component_depth = avio_rb32(pb);
1208 descriptor->horiz_subsampling = avio_rb32(pb);
1211 descriptor->vert_subsampling = avio_rb32(pb);
1214 descriptor->sample_rate.num = avio_rb32(pb);
1215 descriptor->sample_rate.den = avio_rb32(pb);
1217 case 0x3D06: /* SoundEssenceCompression */
1218 avio_read(pb, descriptor->essence_codec_ul, 16);
1221 descriptor->channels = avio_rb32(pb);
1224 descriptor->bits_per_sample = avio_rb32(pb);
1227 mxf_read_pixel_layout(pb, descriptor);
1230 /* Private uid used by SONY C0023S01.mxf */
1231 if (IS_KLV_KEY(uid, mxf_sony_mpeg4_extradata)) {
1232 if (descriptor->extradata)
1233 av_log(NULL, AV_LOG_WARNING, "Duplicate sony_mpeg4_extradata\n");
1234 av_free(descriptor->extradata);
1235 descriptor->extradata_size = 0;
1236 descriptor->extradata = av_malloc(size);
1237 if (!descriptor->extradata)
1238 return AVERROR(ENOMEM);
1239 descriptor->extradata_size = size;
1240 avio_read(pb, descriptor->extradata, size);
1242 if (IS_KLV_KEY(uid, mxf_jp2k_rsiz)) {
1243 uint32_t rsiz = avio_rb16(pb);
1244 if (rsiz == FF_PROFILE_JPEG2000_DCINEMA_2K ||
1245 rsiz == FF_PROFILE_JPEG2000_DCINEMA_4K)
1246 descriptor->pix_fmt = AV_PIX_FMT_XYZ12;
1253 static int mxf_read_indirect_value(void *arg, AVIOContext *pb, int size)
1255 MXFTaggedValue *tagged_value = arg;
1261 avio_read(pb, key, 17);
1262 /* TODO: handle other types of of indirect values */
1263 if (memcmp(key, mxf_indirect_value_utf16le, 17) == 0) {
1264 return mxf_read_utf16le_string(pb, size - 17, &tagged_value->value);
1265 } else if (memcmp(key, mxf_indirect_value_utf16be, 17) == 0) {
1266 return mxf_read_utf16be_string(pb, size - 17, &tagged_value->value);
1271 static int mxf_read_tagged_value(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
1273 MXFTaggedValue *tagged_value = arg;
1276 return mxf_read_utf16be_string(pb, size, &tagged_value->name);
1278 return mxf_read_indirect_value(tagged_value, pb, size);
1284 * Match an uid independently of the version byte and up to len common bytes
1287 static int mxf_match_uid(const UID key, const UID uid, int len)
1290 for (i = 0; i < len; i++) {
1291 if (i != 7 && key[i] != uid[i])
1297 static const MXFCodecUL *mxf_get_codec_ul(const MXFCodecUL *uls, UID *uid)
1299 while (uls->uid[0]) {
1300 if(mxf_match_uid(uls->uid, *uid, uls->matching_len))
1307 static void *mxf_resolve_strong_ref(MXFContext *mxf, UID *strong_ref, enum MXFMetadataSetType type)
1313 for (i = 0; i < mxf->metadata_sets_count; i++) {
1314 if (!memcmp(*strong_ref, mxf->metadata_sets[i]->uid, 16) &&
1315 (type == AnyType || mxf->metadata_sets[i]->type == type)) {
1316 return mxf->metadata_sets[i];
1322 static const MXFCodecUL mxf_picture_essence_container_uls[] = {
1323 // video essence container uls
1324 { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x0d,0x01,0x03,0x01,0x02,0x0c,0x01,0x00 }, 14, AV_CODEC_ID_JPEG2000, NULL, 14 },
1325 { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x02,0x0d,0x01,0x03,0x01,0x02,0x10,0x60,0x01 }, 14, AV_CODEC_ID_H264, NULL, 15 }, /* H.264 */
1326 { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x02,0x0d,0x01,0x03,0x01,0x02,0x11,0x01,0x00 }, 14, AV_CODEC_ID_DNXHD, NULL, 14 }, /* VC-3 */
1327 { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x02,0x0d,0x01,0x03,0x01,0x02,0x12,0x01,0x00 }, 14, AV_CODEC_ID_VC1, NULL, 14 }, /* VC-1 */
1328 { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x02,0x0d,0x01,0x03,0x01,0x02,0x14,0x01,0x00 }, 14, AV_CODEC_ID_TIFF, NULL, 14 }, /* TIFF */
1329 { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x02,0x0d,0x01,0x03,0x01,0x02,0x15,0x01,0x00 }, 14, AV_CODEC_ID_DIRAC, NULL, 14 }, /* VC-2 */
1330 { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x02,0x0d,0x01,0x03,0x01,0x02,0x1b,0x01,0x00 }, 14, AV_CODEC_ID_CFHD, NULL, 14 }, /* VC-5 */
1331 { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x02,0x0d,0x01,0x03,0x01,0x02,0x1c,0x01,0x00 }, 14, AV_CODEC_ID_PRORES, NULL, 14 }, /* ProRes */
1332 { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x02,0x0d,0x01,0x03,0x01,0x02,0x04,0x60,0x01 }, 14, AV_CODEC_ID_MPEG2VIDEO, NULL, 15 }, /* MPEG-ES */
1333 { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x01,0x04,0x01 }, 14, AV_CODEC_ID_MPEG2VIDEO, NULL, 15, D10D11Wrap }, /* SMPTE D-10 mapping */
1334 { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x02,0x41,0x01 }, 14, AV_CODEC_ID_DVVIDEO, NULL, 15 }, /* DV 625 25mbps */
1335 { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x05,0x00,0x00 }, 14, AV_CODEC_ID_RAWVIDEO, NULL, 15, RawVWrap }, /* uncompressed picture */
1336 { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0a,0x0e,0x0f,0x03,0x01,0x02,0x20,0x01,0x01 }, 15, AV_CODEC_ID_HQ_HQA },
1337 { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0a,0x0e,0x0f,0x03,0x01,0x02,0x20,0x02,0x01 }, 15, AV_CODEC_ID_HQX },
1338 { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0a,0x0e,0x15,0x00,0x04,0x02,0x10,0x00,0x01 }, 16, AV_CODEC_ID_HEVC, NULL, 15 }, /* Canon XF-HEVC */
1339 { { 0x06,0x0e,0x2b,0x34,0x01,0x01,0x01,0xff,0x4b,0x46,0x41,0x41,0x00,0x0d,0x4d,0x4f }, 14, AV_CODEC_ID_RAWVIDEO }, /* Legacy ?? Uncompressed Picture */
1340 { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, AV_CODEC_ID_NONE },
1343 /* EC ULs for intra-only formats */
1344 static const MXFCodecUL mxf_intra_only_essence_container_uls[] = {
1345 { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x01,0x00,0x00 }, 14, AV_CODEC_ID_MPEG2VIDEO }, /* MXF-GC SMPTE D-10 mappings */
1346 { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, AV_CODEC_ID_NONE },
1349 /* intra-only PictureEssenceCoding ULs, where no corresponding EC UL exists */
1350 static const MXFCodecUL mxf_intra_only_picture_essence_coding_uls[] = {
1351 { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x01,0x32,0x00,0x00 }, 14, AV_CODEC_ID_H264 }, /* H.264/MPEG-4 AVC Intra Profiles */
1352 { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x04,0x01,0x02,0x02,0x03,0x01,0x01,0x00 }, 14, AV_CODEC_ID_JPEG2000 }, /* JPEG 2000 code stream */
1353 { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, AV_CODEC_ID_NONE },
1356 /* actual coded width for AVC-Intra to allow selecting correct SPS/PPS */
1357 static const MXFCodecUL mxf_intra_only_picture_coded_width[] = {
1358 { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x01 }, 16, 1440 },
1359 { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x02 }, 16, 1440 },
1360 { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x03 }, 16, 1440 },
1361 { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x04 }, 16, 1440 },
1362 { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, 0 },
1365 static const MXFCodecUL mxf_sound_essence_container_uls[] = {
1366 // sound essence container uls
1367 { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x06,0x01,0x00 }, 14, AV_CODEC_ID_PCM_S16LE, NULL, 14, RawAWrap }, /* BWF */
1368 { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x02,0x0d,0x01,0x03,0x01,0x02,0x04,0x40,0x01 }, 14, AV_CODEC_ID_MP2, NULL, 15 }, /* MPEG-ES */
1369 { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x01,0x01,0x01 }, 14, AV_CODEC_ID_PCM_S16LE, NULL, 13 }, /* D-10 Mapping 50Mbps PAL Extended Template */
1370 { { 0x06,0x0e,0x2b,0x34,0x01,0x01,0x01,0xff,0x4b,0x46,0x41,0x41,0x00,0x0d,0x4d,0x4F }, 14, AV_CODEC_ID_PCM_S16LE }, /* 0001GL00.MXF.A1.mxf_opatom.mxf */
1371 { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x03,0x04,0x02,0x02,0x02,0x03,0x03,0x01,0x00 }, 14, AV_CODEC_ID_AAC }, /* MPEG-2 AAC ADTS (legacy) */
1372 { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, AV_CODEC_ID_NONE },
1375 static const MXFCodecUL mxf_data_essence_container_uls[] = {
1376 { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x09,0x0d,0x01,0x03,0x01,0x02,0x0d,0x00,0x00 }, 16, AV_CODEC_ID_NONE, "vbi_smpte_436M", 11 },
1377 { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x09,0x0d,0x01,0x03,0x01,0x02,0x0e,0x00,0x00 }, 16, AV_CODEC_ID_NONE, "vbi_vanc_smpte_436M", 11 },
1378 { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x09,0x0d,0x01,0x03,0x01,0x02,0x13,0x01,0x01 }, 16, AV_CODEC_ID_TTML },
1379 { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, AV_CODEC_ID_NONE },
1382 static MXFWrappingScheme mxf_get_wrapping_kind(UID *essence_container_ul)
1385 const MXFCodecUL *codec_ul;
1387 codec_ul = mxf_get_codec_ul(mxf_picture_essence_container_uls, essence_container_ul);
1388 if (!codec_ul->uid[0])
1389 codec_ul = mxf_get_codec_ul(mxf_sound_essence_container_uls, essence_container_ul);
1390 if (!codec_ul->uid[0])
1391 codec_ul = mxf_get_codec_ul(mxf_data_essence_container_uls, essence_container_ul);
1392 if (!codec_ul->uid[0] || !codec_ul->wrapping_indicator_pos)
1393 return UnknownWrapped;
1395 val = (*essence_container_ul)[codec_ul->wrapping_indicator_pos];
1396 switch (codec_ul->wrapping_indicator_type) {
1401 if (val == 0x03 || val == 0x04)
1410 return FrameWrapped;
1413 return UnknownWrapped;
1416 static int mxf_get_sorted_table_segments(MXFContext *mxf, int *nb_sorted_segments, MXFIndexTableSegment ***sorted_segments)
1418 int i, j, nb_segments = 0;
1419 MXFIndexTableSegment **unsorted_segments;
1420 int last_body_sid = -1, last_index_sid = -1, last_index_start = -1;
1422 /* count number of segments, allocate arrays and copy unsorted segments */
1423 for (i = 0; i < mxf->metadata_sets_count; i++)
1424 if (mxf->metadata_sets[i]->type == IndexTableSegment)
1428 return AVERROR_INVALIDDATA;
1430 if (!(unsorted_segments = av_calloc(nb_segments, sizeof(*unsorted_segments))) ||
1431 !(*sorted_segments = av_calloc(nb_segments, sizeof(**sorted_segments)))) {
1432 av_freep(sorted_segments);
1433 av_free(unsorted_segments);
1434 return AVERROR(ENOMEM);
1437 for (i = nb_segments = 0; i < mxf->metadata_sets_count; i++) {
1438 if (mxf->metadata_sets[i]->type == IndexTableSegment) {
1439 MXFIndexTableSegment *s = (MXFIndexTableSegment*)mxf->metadata_sets[i];
1440 if (s->edit_unit_byte_count || s->nb_index_entries)
1441 unsorted_segments[nb_segments++] = s;
1443 av_log(mxf->fc, AV_LOG_WARNING, "IndexSID %i segment at %"PRId64" missing EditUnitByteCount and IndexEntryArray\n",
1444 s->index_sid, s->index_start_position);
1449 av_freep(sorted_segments);
1450 av_free(unsorted_segments);
1451 return AVERROR_INVALIDDATA;
1454 *nb_sorted_segments = 0;
1456 /* sort segments by {BodySID, IndexSID, IndexStartPosition}, remove duplicates while we're at it */
1457 for (i = 0; i < nb_segments; i++) {
1458 int best = -1, best_body_sid = -1, best_index_sid = -1, best_index_start = -1;
1459 uint64_t best_index_duration = 0;
1461 for (j = 0; j < nb_segments; j++) {
1462 MXFIndexTableSegment *s = unsorted_segments[j];
1464 /* Require larger BosySID, IndexSID or IndexStartPosition then the previous entry. This removes duplicates.
1465 * We want the smallest values for the keys than what we currently have, unless this is the first such entry this time around.
1466 * If we come across an entry with the same IndexStartPosition but larger IndexDuration, then we'll prefer it over the one we currently have.
1469 s->body_sid > last_body_sid ||
1470 s->body_sid == last_body_sid && s->index_sid > last_index_sid ||
1471 s->body_sid == last_body_sid && s->index_sid == last_index_sid && s->index_start_position > last_index_start) &&
1473 s->body_sid < best_body_sid ||
1474 s->body_sid == best_body_sid && s->index_sid < best_index_sid ||
1475 s->body_sid == best_body_sid && s->index_sid == best_index_sid && s->index_start_position < best_index_start ||
1476 s->body_sid == best_body_sid && s->index_sid == best_index_sid && s->index_start_position == best_index_start && s->index_duration > best_index_duration)) {
1478 best_body_sid = s->body_sid;
1479 best_index_sid = s->index_sid;
1480 best_index_start = s->index_start_position;
1481 best_index_duration = s->index_duration;
1485 /* no suitable entry found -> we're done */
1489 (*sorted_segments)[(*nb_sorted_segments)++] = unsorted_segments[best];
1490 last_body_sid = best_body_sid;
1491 last_index_sid = best_index_sid;
1492 last_index_start = best_index_start;
1495 av_free(unsorted_segments);
1501 * Computes the absolute file offset of the given essence container offset
1503 static int mxf_absolute_bodysid_offset(MXFContext *mxf, int body_sid, int64_t offset, int64_t *offset_out, MXFPartition **partition_out)
1505 MXFPartition *last_p = NULL;
1509 return AVERROR(EINVAL);
1512 b = mxf->partitions_count;
1515 m0 = m = (a + b) >> 1;
1517 while (m < b && mxf->partitions[m].body_sid != body_sid)
1520 if (m < b && mxf->partitions[m].body_offset <= offset)
1527 last_p = &mxf->partitions[a];
1529 if (last_p && (!last_p->essence_length || last_p->essence_length > (offset - last_p->body_offset))) {
1530 *offset_out = last_p->essence_offset + (offset - last_p->body_offset);
1532 *partition_out = last_p;
1536 av_log(mxf->fc, AV_LOG_ERROR,
1537 "failed to find absolute offset of %"PRIX64" in BodySID %i - partial file?\n",
1540 return AVERROR_INVALIDDATA;
1544 * Returns the end position of the essence container with given BodySID, or zero if unknown
1546 static int64_t mxf_essence_container_end(MXFContext *mxf, int body_sid)
1548 for (int x = mxf->partitions_count - 1; x >= 0; x--) {
1549 MXFPartition *p = &mxf->partitions[x];
1551 if (p->body_sid != body_sid)
1554 if (!p->essence_length)
1557 return p->essence_offset + p->essence_length;
1563 /* EditUnit -> absolute offset */
1564 static int mxf_edit_unit_absolute_offset(MXFContext *mxf, MXFIndexTable *index_table, int64_t edit_unit, AVRational edit_rate, int64_t *edit_unit_out, int64_t *offset_out, MXFPartition **partition_out, int nag)
1567 int64_t offset_temp = 0;
1569 edit_unit = av_rescale_q(edit_unit, index_table->segments[0]->index_edit_rate, edit_rate);
1571 for (i = 0; i < index_table->nb_segments; i++) {
1572 MXFIndexTableSegment *s = index_table->segments[i];
1574 edit_unit = FFMAX(edit_unit, s->index_start_position); /* clamp if trying to seek before start */
1576 if (edit_unit < s->index_start_position + s->index_duration) {
1577 int64_t index = edit_unit - s->index_start_position;
1579 if (s->edit_unit_byte_count)
1580 offset_temp += s->edit_unit_byte_count * index;
1582 if (s->nb_index_entries == 2 * s->index_duration + 1)
1583 index *= 2; /* Avid index */
1585 if (index < 0 || index >= s->nb_index_entries) {
1586 av_log(mxf->fc, AV_LOG_ERROR, "IndexSID %i segment at %"PRId64" IndexEntryArray too small\n",
1587 index_table->index_sid, s->index_start_position);
1588 return AVERROR_INVALIDDATA;
1591 offset_temp = s->stream_offset_entries[index];
1595 *edit_unit_out = av_rescale_q(edit_unit, edit_rate, s->index_edit_rate);
1597 return mxf_absolute_bodysid_offset(mxf, index_table->body_sid, offset_temp, offset_out, partition_out);
1599 /* EditUnitByteCount == 0 for VBR indexes, which is fine since they use explicit StreamOffsets */
1600 offset_temp += s->edit_unit_byte_count * s->index_duration;
1605 av_log(mxf->fc, AV_LOG_ERROR, "failed to map EditUnit %"PRId64" in IndexSID %i to an offset\n", edit_unit, index_table->index_sid);
1607 return AVERROR_INVALIDDATA;
1610 static int mxf_compute_ptses_fake_index(MXFContext *mxf, MXFIndexTable *index_table)
1613 int8_t max_temporal_offset = -128;
1616 /* first compute how many entries we have */
1617 for (i = 0; i < index_table->nb_segments; i++) {
1618 MXFIndexTableSegment *s = index_table->segments[i];
1620 if (!s->nb_index_entries) {
1621 index_table->nb_ptses = 0;
1622 return 0; /* no TemporalOffsets */
1625 if (s->index_duration > INT_MAX - index_table->nb_ptses) {
1626 index_table->nb_ptses = 0;
1627 av_log(mxf->fc, AV_LOG_ERROR, "ignoring IndexSID %d, duration is too large\n", s->index_sid);
1631 index_table->nb_ptses += s->index_duration;
1634 /* paranoid check */
1635 if (index_table->nb_ptses <= 0)
1638 if (!(index_table->ptses = av_calloc(index_table->nb_ptses, sizeof(int64_t))) ||
1639 !(index_table->fake_index = av_calloc(index_table->nb_ptses, sizeof(AVIndexEntry))) ||
1640 !(index_table->offsets = av_calloc(index_table->nb_ptses, sizeof(int8_t))) ||
1641 !(flags = av_calloc(index_table->nb_ptses, sizeof(uint8_t)))) {
1642 av_freep(&index_table->ptses);
1643 av_freep(&index_table->fake_index);
1644 av_freep(&index_table->offsets);
1645 return AVERROR(ENOMEM);
1648 /* we may have a few bad TemporalOffsets
1649 * make sure the corresponding PTSes don't have the bogus value 0 */
1650 for (x = 0; x < index_table->nb_ptses; x++)
1651 index_table->ptses[x] = AV_NOPTS_VALUE;
1665 * We want to transform it into this:
1676 * We do this by bucket sorting x by x+TemporalOffset[x] into mxf->ptses,
1677 * then settings mxf->first_dts = -max(TemporalOffset[x]).
1678 * The latter makes DTS <= PTS.
1680 for (i = x = 0; i < index_table->nb_segments; i++) {
1681 MXFIndexTableSegment *s = index_table->segments[i];
1682 int index_delta = 1;
1683 int n = s->nb_index_entries;
1685 if (s->nb_index_entries == 2 * s->index_duration + 1) {
1686 index_delta = 2; /* Avid index */
1687 /* ignore the last entry - it's the size of the essence container */
1691 for (j = 0; j < n; j += index_delta, x++) {
1692 int offset = s->temporal_offset_entries[j] / index_delta;
1693 int index = x + offset;
1695 if (x >= index_table->nb_ptses) {
1696 av_log(mxf->fc, AV_LOG_ERROR,
1697 "x >= nb_ptses - IndexEntryCount %i < IndexDuration %"PRId64"?\n",
1698 s->nb_index_entries, s->index_duration);
1702 flags[x] = !(s->flag_entries[j] & 0x30) ? AVINDEX_KEYFRAME : 0;
1704 if (index < 0 || index >= index_table->nb_ptses) {
1705 av_log(mxf->fc, AV_LOG_ERROR,
1706 "index entry %i + TemporalOffset %i = %i, which is out of bounds\n",
1711 index_table->offsets[x] = offset;
1712 index_table->ptses[index] = x;
1713 max_temporal_offset = FFMAX(max_temporal_offset, offset);
1717 /* calculate the fake index table in display order */
1718 for (x = 0; x < index_table->nb_ptses; x++) {
1719 index_table->fake_index[x].timestamp = x;
1720 if (index_table->ptses[x] != AV_NOPTS_VALUE)
1721 index_table->fake_index[index_table->ptses[x]].flags = flags[x];
1725 index_table->first_dts = -max_temporal_offset;
1731 * Sorts and collects index table segments into index tables.
1732 * Also computes PTSes if possible.
1734 static int mxf_compute_index_tables(MXFContext *mxf)
1736 int i, j, k, ret, nb_sorted_segments;
1737 MXFIndexTableSegment **sorted_segments = NULL;
1739 if ((ret = mxf_get_sorted_table_segments(mxf, &nb_sorted_segments, &sorted_segments)) ||
1740 nb_sorted_segments <= 0) {
1741 av_log(mxf->fc, AV_LOG_WARNING, "broken or empty index\n");
1745 /* sanity check and count unique BodySIDs/IndexSIDs */
1746 for (i = 0; i < nb_sorted_segments; i++) {
1747 if (i == 0 || sorted_segments[i-1]->index_sid != sorted_segments[i]->index_sid)
1748 mxf->nb_index_tables++;
1749 else if (sorted_segments[i-1]->body_sid != sorted_segments[i]->body_sid) {
1750 av_log(mxf->fc, AV_LOG_ERROR, "found inconsistent BodySID\n");
1751 ret = AVERROR_INVALIDDATA;
1752 goto finish_decoding_index;
1756 mxf->index_tables = av_mallocz_array(mxf->nb_index_tables,
1757 sizeof(*mxf->index_tables));
1758 if (!mxf->index_tables) {
1759 av_log(mxf->fc, AV_LOG_ERROR, "failed to allocate index tables\n");
1760 ret = AVERROR(ENOMEM);
1761 goto finish_decoding_index;
1764 /* distribute sorted segments to index tables */
1765 for (i = j = 0; i < nb_sorted_segments; i++) {
1766 if (i != 0 && sorted_segments[i-1]->index_sid != sorted_segments[i]->index_sid) {
1771 mxf->index_tables[j].nb_segments++;
1774 for (i = j = 0; j < mxf->nb_index_tables; i += mxf->index_tables[j++].nb_segments) {
1775 MXFIndexTable *t = &mxf->index_tables[j];
1776 MXFTrack *mxf_track = NULL;
1778 t->segments = av_mallocz_array(t->nb_segments,
1779 sizeof(*t->segments));
1782 av_log(mxf->fc, AV_LOG_ERROR, "failed to allocate IndexTableSegment"
1783 " pointer array\n");
1784 ret = AVERROR(ENOMEM);
1785 goto finish_decoding_index;
1788 if (sorted_segments[i]->index_start_position)
1789 av_log(mxf->fc, AV_LOG_WARNING, "IndexSID %i starts at EditUnit %"PRId64" - seeking may not work as expected\n",
1790 sorted_segments[i]->index_sid, sorted_segments[i]->index_start_position);
1792 memcpy(t->segments, &sorted_segments[i], t->nb_segments * sizeof(MXFIndexTableSegment*));
1793 t->index_sid = sorted_segments[i]->index_sid;
1794 t->body_sid = sorted_segments[i]->body_sid;
1796 if ((ret = mxf_compute_ptses_fake_index(mxf, t)) < 0)
1797 goto finish_decoding_index;
1799 for (k = 0; k < mxf->fc->nb_streams; k++) {
1800 MXFTrack *track = mxf->fc->streams[k]->priv_data;
1801 if (track && track->index_sid == t->index_sid) {
1807 /* fix zero IndexDurations */
1808 for (k = 0; k < t->nb_segments; k++) {
1809 if (!t->segments[k]->index_edit_rate.num || !t->segments[k]->index_edit_rate.den) {
1810 av_log(mxf->fc, AV_LOG_WARNING, "IndexSID %i segment %i has invalid IndexEditRate\n",
1813 t->segments[k]->index_edit_rate = mxf_track->edit_rate;
1816 if (t->segments[k]->index_duration)
1819 if (t->nb_segments > 1)
1820 av_log(mxf->fc, AV_LOG_WARNING, "IndexSID %i segment %i has zero IndexDuration and there's more than one segment\n",
1824 av_log(mxf->fc, AV_LOG_WARNING, "no streams?\n");
1828 /* assume the first stream's duration is reasonable
1829 * leave index_duration = 0 on further segments in case we have any (unlikely)
1831 t->segments[k]->index_duration = mxf_track->original_duration;
1837 finish_decoding_index:
1838 av_free(sorted_segments);
1842 static int mxf_is_intra_only(MXFDescriptor *descriptor)
1844 return mxf_get_codec_ul(mxf_intra_only_essence_container_uls,
1845 &descriptor->essence_container_ul)->id != AV_CODEC_ID_NONE ||
1846 mxf_get_codec_ul(mxf_intra_only_picture_essence_coding_uls,
1847 &descriptor->essence_codec_ul)->id != AV_CODEC_ID_NONE;
1850 static int mxf_uid_to_str(UID uid, char **str)
1854 p = *str = av_mallocz(sizeof(UID) * 2 + 4 + 1);
1856 return AVERROR(ENOMEM);
1857 for (i = 0; i < sizeof(UID); i++) {
1858 snprintf(p, 2 + 1, "%.2x", uid[i]);
1860 if (i == 3 || i == 5 || i == 7 || i == 9) {
1861 snprintf(p, 1 + 1, "-");
1868 static int mxf_umid_to_str(UID ul, UID uid, char **str)
1872 p = *str = av_mallocz(sizeof(UID) * 4 + 2 + 1);
1874 return AVERROR(ENOMEM);
1875 snprintf(p, 2 + 1, "0x");
1877 for (i = 0; i < sizeof(UID); i++) {
1878 snprintf(p, 2 + 1, "%.2X", ul[i]);
1882 for (i = 0; i < sizeof(UID); i++) {
1883 snprintf(p, 2 + 1, "%.2X", uid[i]);
1889 static int mxf_add_umid_metadata(AVDictionary **pm, const char *key, MXFPackage* package)
1895 if ((ret = mxf_umid_to_str(package->package_ul, package->package_uid, &str)) < 0)
1897 av_dict_set(pm, key, str, AV_DICT_DONT_STRDUP_VAL);
1901 static int mxf_add_timecode_metadata(AVDictionary **pm, const char *key, AVTimecode *tc)
1903 char buf[AV_TIMECODE_STR_SIZE];
1904 av_dict_set(pm, key, av_timecode_make_string(tc, buf, 0), 0);
1909 static MXFTimecodeComponent* mxf_resolve_timecode_component(MXFContext *mxf, UID *strong_ref)
1911 MXFStructuralComponent *component = NULL;
1912 MXFPulldownComponent *pulldown = NULL;
1914 component = mxf_resolve_strong_ref(mxf, strong_ref, AnyType);
1918 switch (component->type) {
1919 case TimecodeComponent:
1920 return (MXFTimecodeComponent*)component;
1921 case PulldownComponent: /* timcode component may be located on a pulldown component */
1922 pulldown = (MXFPulldownComponent*)component;
1923 return mxf_resolve_strong_ref(mxf, &pulldown->input_segment_ref, TimecodeComponent);
1930 static MXFPackage* mxf_resolve_source_package(MXFContext *mxf, UID package_ul, UID package_uid)
1932 MXFPackage *package = NULL;
1935 for (i = 0; i < mxf->packages_count; i++) {
1936 package = mxf_resolve_strong_ref(mxf, &mxf->packages_refs[i], SourcePackage);
1940 if (!memcmp(package->package_ul, package_ul, 16) && !memcmp(package->package_uid, package_uid, 16))
1946 static MXFDescriptor* mxf_resolve_multidescriptor(MXFContext *mxf, MXFDescriptor *descriptor, int track_id)
1948 MXFDescriptor *sub_descriptor = NULL;
1954 if (descriptor->type == MultipleDescriptor) {
1955 for (i = 0; i < descriptor->sub_descriptors_count; i++) {
1956 sub_descriptor = mxf_resolve_strong_ref(mxf, &descriptor->sub_descriptors_refs[i], Descriptor);
1958 if (!sub_descriptor) {
1959 av_log(mxf->fc, AV_LOG_ERROR, "could not resolve sub descriptor strong ref\n");
1962 if (sub_descriptor->linked_track_id == track_id) {
1963 return sub_descriptor;
1966 } else if (descriptor->type == Descriptor)
1972 static MXFStructuralComponent* mxf_resolve_essence_group_choice(MXFContext *mxf, MXFEssenceGroup *essence_group)
1974 MXFStructuralComponent *component = NULL;
1975 MXFPackage *package = NULL;
1976 MXFDescriptor *descriptor = NULL;
1979 if (!essence_group || !essence_group->structural_components_count)
1982 /* essence groups contains multiple representations of the same media,
1983 this return the first components with a valid Descriptor typically index 0 */
1984 for (i =0; i < essence_group->structural_components_count; i++){
1985 component = mxf_resolve_strong_ref(mxf, &essence_group->structural_components_refs[i], SourceClip);
1989 if (!(package = mxf_resolve_source_package(mxf, component->source_package_ul, component->source_package_uid)))
1992 descriptor = mxf_resolve_strong_ref(mxf, &package->descriptor_ref, Descriptor);
1999 static MXFStructuralComponent* mxf_resolve_sourceclip(MXFContext *mxf, UID *strong_ref)
2001 MXFStructuralComponent *component = NULL;
2003 component = mxf_resolve_strong_ref(mxf, strong_ref, AnyType);
2006 switch (component->type) {
2010 return mxf_resolve_essence_group_choice(mxf, (MXFEssenceGroup*) component);
2017 static int mxf_parse_package_comments(MXFContext *mxf, AVDictionary **pm, MXFPackage *package)
2019 MXFTaggedValue *tag;
2023 for (i = 0; i < package->comment_count; i++) {
2024 tag = mxf_resolve_strong_ref(mxf, &package->comment_refs[i], TaggedValue);
2025 if (!tag || !tag->name || !tag->value)
2028 size = strlen(tag->name) + 8 + 1;
2029 key = av_mallocz(size);
2031 return AVERROR(ENOMEM);
2033 snprintf(key, size, "comment_%s", tag->name);
2034 av_dict_set(pm, key, tag->value, AV_DICT_DONT_STRDUP_KEY);
2039 static int mxf_parse_physical_source_package(MXFContext *mxf, MXFTrack *source_track, AVStream *st)
2041 MXFPackage *physical_package = NULL;
2042 MXFTrack *physical_track = NULL;
2043 MXFStructuralComponent *sourceclip = NULL;
2044 MXFTimecodeComponent *mxf_tc = NULL;
2048 int64_t start_position;
2050 for (i = 0; i < source_track->sequence->structural_components_count; i++) {
2051 sourceclip = mxf_resolve_strong_ref(mxf, &source_track->sequence->structural_components_refs[i], SourceClip);
2055 if (!(physical_package = mxf_resolve_source_package(mxf, sourceclip->source_package_ul, sourceclip->source_package_uid)))
2058 mxf_add_umid_metadata(&st->metadata, "reel_umid", physical_package);
2060 /* the name of physical source package is name of the reel or tape */
2061 if (physical_package->name && physical_package->name[0])
2062 av_dict_set(&st->metadata, "reel_name", physical_package->name, 0);
2064 /* the source timecode is calculated by adding the start_position of the sourceclip from the file source package track
2065 * to the start_frame of the timecode component located on one of the tracks of the physical source package.
2067 for (j = 0; j < physical_package->tracks_count; j++) {
2068 if (!(physical_track = mxf_resolve_strong_ref(mxf, &physical_package->tracks_refs[j], Track))) {
2069 av_log(mxf->fc, AV_LOG_ERROR, "could not resolve source track strong ref\n");
2073 if (!(physical_track->sequence = mxf_resolve_strong_ref(mxf, &physical_track->sequence_ref, Sequence))) {
2074 av_log(mxf->fc, AV_LOG_ERROR, "could not resolve source track sequence strong ref\n");
2078 if (physical_track->edit_rate.num <= 0 ||
2079 physical_track->edit_rate.den <= 0) {
2080 av_log(mxf->fc, AV_LOG_WARNING,
2081 "Invalid edit rate (%d/%d) found on structural"
2082 " component #%d, defaulting to 25/1\n",
2083 physical_track->edit_rate.num,
2084 physical_track->edit_rate.den, i);
2085 physical_track->edit_rate = (AVRational){25, 1};
2088 for (k = 0; k < physical_track->sequence->structural_components_count; k++) {
2089 if (!(mxf_tc = mxf_resolve_timecode_component(mxf, &physical_track->sequence->structural_components_refs[k])))
2092 flags = mxf_tc->drop_frame == 1 ? AV_TIMECODE_FLAG_DROPFRAME : 0;
2093 /* scale sourceclip start_position to match physical track edit rate */
2094 start_position = av_rescale_q(sourceclip->start_position,
2095 physical_track->edit_rate,
2096 source_track->edit_rate);
2098 if (av_timecode_init(&tc, mxf_tc->rate, flags, start_position + mxf_tc->start_frame, mxf->fc) == 0) {
2099 mxf_add_timecode_metadata(&st->metadata, "timecode", &tc);
2109 static int mxf_add_metadata_stream(MXFContext *mxf, MXFTrack *track)
2111 MXFStructuralComponent *component = NULL;
2112 const MXFCodecUL *codec_ul = NULL;
2113 MXFPackage tmp_package;
2117 for (j = 0; j < track->sequence->structural_components_count; j++) {
2118 component = mxf_resolve_sourceclip(mxf, &track->sequence->structural_components_refs[j]);
2126 st = avformat_new_stream(mxf->fc, NULL);
2128 av_log(mxf->fc, AV_LOG_ERROR, "could not allocate metadata stream\n");
2129 return AVERROR(ENOMEM);
2132 st->codecpar->codec_type = AVMEDIA_TYPE_DATA;
2133 st->codecpar->codec_id = AV_CODEC_ID_NONE;
2134 st->id = track->track_id;
2136 memcpy(&tmp_package.package_ul, component->source_package_ul, 16);
2137 memcpy(&tmp_package.package_uid, component->source_package_uid, 16);
2138 mxf_add_umid_metadata(&st->metadata, "file_package_umid", &tmp_package);
2139 if (track->name && track->name[0])
2140 av_dict_set(&st->metadata, "track_name", track->name, 0);
2142 codec_ul = mxf_get_codec_ul(ff_mxf_data_definition_uls, &track->sequence->data_definition_ul);
2143 av_dict_set(&st->metadata, "data_type", av_get_media_type_string(codec_ul->id), 0);
2147 static int mxf_parse_structural_metadata(MXFContext *mxf)
2149 MXFPackage *material_package = NULL;
2152 av_log(mxf->fc, AV_LOG_TRACE, "metadata sets count %d\n", mxf->metadata_sets_count);
2153 /* TODO: handle multiple material packages (OP3x) */
2154 for (i = 0; i < mxf->packages_count; i++) {
2155 material_package = mxf_resolve_strong_ref(mxf, &mxf->packages_refs[i], MaterialPackage);
2156 if (material_package) break;
2158 if (!material_package) {
2159 av_log(mxf->fc, AV_LOG_ERROR, "no material package found\n");
2160 return AVERROR_INVALIDDATA;
2163 mxf_add_umid_metadata(&mxf->fc->metadata, "material_package_umid", material_package);
2164 if (material_package->name && material_package->name[0])
2165 av_dict_set(&mxf->fc->metadata, "material_package_name", material_package->name, 0);
2166 mxf_parse_package_comments(mxf, &mxf->fc->metadata, material_package);
2168 for (i = 0; i < material_package->tracks_count; i++) {
2169 MXFPackage *source_package = NULL;
2170 MXFTrack *material_track = NULL;
2171 MXFTrack *source_track = NULL;
2172 MXFTrack *temp_track = NULL;
2173 MXFDescriptor *descriptor = NULL;
2174 MXFStructuralComponent *component = NULL;
2175 MXFTimecodeComponent *mxf_tc = NULL;
2176 UID *essence_container_ul = NULL;
2177 const MXFCodecUL *codec_ul = NULL;
2178 const MXFCodecUL *container_ul = NULL;
2179 const MXFCodecUL *pix_fmt_ul = NULL;
2184 if (!(material_track = mxf_resolve_strong_ref(mxf, &material_package->tracks_refs[i], Track))) {
2185 av_log(mxf->fc, AV_LOG_ERROR, "could not resolve material track strong ref\n");
2189 if ((component = mxf_resolve_strong_ref(mxf, &material_track->sequence_ref, TimecodeComponent))) {
2190 mxf_tc = (MXFTimecodeComponent*)component;
2191 flags = mxf_tc->drop_frame == 1 ? AV_TIMECODE_FLAG_DROPFRAME : 0;
2192 if (av_timecode_init(&tc, mxf_tc->rate, flags, mxf_tc->start_frame, mxf->fc) == 0) {
2193 mxf_add_timecode_metadata(&mxf->fc->metadata, "timecode", &tc);
2197 if (!(material_track->sequence = mxf_resolve_strong_ref(mxf, &material_track->sequence_ref, Sequence))) {
2198 av_log(mxf->fc, AV_LOG_ERROR, "could not resolve material track sequence strong ref\n");
2202 for (j = 0; j < material_track->sequence->structural_components_count; j++) {
2203 component = mxf_resolve_strong_ref(mxf, &material_track->sequence->structural_components_refs[j], TimecodeComponent);
2207 mxf_tc = (MXFTimecodeComponent*)component;
2208 flags = mxf_tc->drop_frame == 1 ? AV_TIMECODE_FLAG_DROPFRAME : 0;
2209 if (av_timecode_init(&tc, mxf_tc->rate, flags, mxf_tc->start_frame, mxf->fc) == 0) {
2210 mxf_add_timecode_metadata(&mxf->fc->metadata, "timecode", &tc);
2215 /* TODO: handle multiple source clips, only finds first valid source clip */
2216 if(material_track->sequence->structural_components_count > 1)
2217 av_log(mxf->fc, AV_LOG_WARNING, "material track %d: has %d components\n",
2218 material_track->track_id, material_track->sequence->structural_components_count);
2220 for (j = 0; j < material_track->sequence->structural_components_count; j++) {
2221 component = mxf_resolve_sourceclip(mxf, &material_track->sequence->structural_components_refs[j]);
2225 source_package = mxf_resolve_source_package(mxf, component->source_package_ul, component->source_package_uid);
2226 if (!source_package) {
2227 av_log(mxf->fc, AV_LOG_TRACE, "material track %d: no corresponding source package found\n", material_track->track_id);
2230 for (k = 0; k < source_package->tracks_count; k++) {
2231 if (!(temp_track = mxf_resolve_strong_ref(mxf, &source_package->tracks_refs[k], Track))) {
2232 av_log(mxf->fc, AV_LOG_ERROR, "could not resolve source track strong ref\n");
2233 ret = AVERROR_INVALIDDATA;
2236 if (temp_track->track_id == component->source_track_id) {
2237 source_track = temp_track;
2241 if (!source_track) {
2242 av_log(mxf->fc, AV_LOG_ERROR, "material track %d: no corresponding source track found\n", material_track->track_id);
2246 for (k = 0; k < mxf->essence_container_data_count; k++) {
2247 MXFEssenceContainerData *essence_data;
2249 if (!(essence_data = mxf_resolve_strong_ref(mxf, &mxf->essence_container_data_refs[k], EssenceContainerData))) {
2250 av_log(mxf->fc, AV_LOG_TRACE, "could not resolve essence container data strong ref\n");
2253 if (!memcmp(component->source_package_ul, essence_data->package_ul, sizeof(UID)) && !memcmp(component->source_package_uid, essence_data->package_uid, sizeof(UID))) {
2254 source_track->body_sid = essence_data->body_sid;
2255 source_track->index_sid = essence_data->index_sid;
2260 if(source_track && component)
2263 if (!source_track || !component || !source_package) {
2264 if((ret = mxf_add_metadata_stream(mxf, material_track)))
2269 if (!(source_track->sequence = mxf_resolve_strong_ref(mxf, &source_track->sequence_ref, Sequence))) {
2270 av_log(mxf->fc, AV_LOG_ERROR, "could not resolve source track sequence strong ref\n");
2271 ret = AVERROR_INVALIDDATA;
2275 /* 0001GL00.MXF.A1.mxf_opatom.mxf has the same SourcePackageID as 0001GL.MXF.V1.mxf_opatom.mxf
2276 * This would result in both files appearing to have two streams. Work around this by sanity checking DataDefinition */
2277 if (memcmp(material_track->sequence->data_definition_ul, source_track->sequence->data_definition_ul, 16)) {
2278 av_log(mxf->fc, AV_LOG_ERROR, "material track %d: DataDefinition mismatch\n", material_track->track_id);
2282 st = avformat_new_stream(mxf->fc, NULL);
2284 av_log(mxf->fc, AV_LOG_ERROR, "could not allocate stream\n");
2285 ret = AVERROR(ENOMEM);
2288 st->id = material_track->track_id;
2289 st->priv_data = source_track;
2291 source_package->descriptor = mxf_resolve_strong_ref(mxf, &source_package->descriptor_ref, AnyType);
2292 descriptor = mxf_resolve_multidescriptor(mxf, source_package->descriptor, source_track->track_id);
2294 /* A SourceClip from a EssenceGroup may only be a single frame of essence data. The clips duration is then how many
2295 * frames its suppose to repeat for. Descriptor->duration, if present, contains the real duration of the essence data */
2296 if (descriptor && descriptor->duration != AV_NOPTS_VALUE)
2297 source_track->original_duration = st->duration = FFMIN(descriptor->duration, component->duration);
2299 source_track->original_duration = st->duration = component->duration;
2301 if (st->duration == -1)
2302 st->duration = AV_NOPTS_VALUE;
2303 st->start_time = component->start_position;
2304 if (material_track->edit_rate.num <= 0 ||
2305 material_track->edit_rate.den <= 0) {
2306 av_log(mxf->fc, AV_LOG_WARNING,
2307 "Invalid edit rate (%d/%d) found on stream #%d, "
2308 "defaulting to 25/1\n",
2309 material_track->edit_rate.num,
2310 material_track->edit_rate.den, st->index);
2311 material_track->edit_rate = (AVRational){25, 1};
2313 avpriv_set_pts_info(st, 64, material_track->edit_rate.den, material_track->edit_rate.num);
2315 /* ensure SourceTrack EditRate == MaterialTrack EditRate since only
2316 * the former is accessible via st->priv_data */
2317 source_track->edit_rate = material_track->edit_rate;
2319 PRINT_KEY(mxf->fc, "data definition ul", source_track->sequence->data_definition_ul);
2320 codec_ul = mxf_get_codec_ul(ff_mxf_data_definition_uls, &source_track->sequence->data_definition_ul);
2321 st->codecpar->codec_type = codec_ul->id;
2324 av_log(mxf->fc, AV_LOG_INFO, "source track %d: stream %d, no descriptor found\n", source_track->track_id, st->index);
2327 PRINT_KEY(mxf->fc, "essence codec ul", descriptor->essence_codec_ul);
2328 PRINT_KEY(mxf->fc, "essence container ul", descriptor->essence_container_ul);
2329 essence_container_ul = &descriptor->essence_container_ul;
2330 source_track->wrapping = (mxf->op == OPAtom) ? ClipWrapped : mxf_get_wrapping_kind(essence_container_ul);
2331 if (source_track->wrapping == UnknownWrapped)
2332 av_log(mxf->fc, AV_LOG_INFO, "wrapping of stream %d is unknown\n", st->index);
2333 /* HACK: replacing the original key with mxf_encrypted_essence_container
2334 * is not allowed according to s429-6, try to find correct information anyway */
2335 if (IS_KLV_KEY(essence_container_ul, mxf_encrypted_essence_container)) {
2336 av_log(mxf->fc, AV_LOG_INFO, "broken encrypted mxf file\n");
2337 for (k = 0; k < mxf->metadata_sets_count; k++) {
2338 MXFMetadataSet *metadata = mxf->metadata_sets[k];
2339 if (metadata->type == CryptoContext) {
2340 essence_container_ul = &((MXFCryptoContext *)metadata)->source_container_ul;
2346 /* TODO: drop PictureEssenceCoding and SoundEssenceCompression, only check EssenceContainer */
2347 codec_ul = mxf_get_codec_ul(ff_mxf_codec_uls, &descriptor->essence_codec_ul);
2348 st->codecpar->codec_id = (enum AVCodecID)codec_ul->id;
2349 if (st->codecpar->codec_id == AV_CODEC_ID_NONE) {
2350 codec_ul = mxf_get_codec_ul(ff_mxf_codec_uls, &descriptor->codec_ul);
2351 st->codecpar->codec_id = (enum AVCodecID)codec_ul->id;
2354 av_log(mxf->fc, AV_LOG_VERBOSE, "%s: Universal Label: ",
2355 avcodec_get_name(st->codecpar->codec_id));
2356 for (k = 0; k < 16; k++) {
2357 av_log(mxf->fc, AV_LOG_VERBOSE, "%.2x",
2358 descriptor->essence_codec_ul[k]);
2359 if (!(k+1 & 19) || k == 5)
2360 av_log(mxf->fc, AV_LOG_VERBOSE, ".");
2362 av_log(mxf->fc, AV_LOG_VERBOSE, "\n");
2364 mxf_add_umid_metadata(&st->metadata, "file_package_umid", source_package);
2365 if (source_package->name && source_package->name[0])
2366 av_dict_set(&st->metadata, "file_package_name", source_package->name, 0);
2367 if (material_track->name && material_track->name[0])
2368 av_dict_set(&st->metadata, "track_name", material_track->name, 0);
2370 mxf_parse_physical_source_package(mxf, source_track, st);
2372 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
2373 source_track->intra_only = mxf_is_intra_only(descriptor);
2374 container_ul = mxf_get_codec_ul(mxf_picture_essence_container_uls, essence_container_ul);
2375 if (st->codecpar->codec_id == AV_CODEC_ID_NONE)
2376 st->codecpar->codec_id = container_ul->id;
2377 st->codecpar->width = descriptor->width;
2378 st->codecpar->height = descriptor->height; /* Field height, not frame height */
2379 switch (descriptor->frame_layout) {
2381 st->codecpar->field_order = AV_FIELD_PROGRESSIVE;
2384 /* Every other line is stored and needs to be duplicated. */
2385 av_log(mxf->fc, AV_LOG_INFO, "OneField frame layout isn't currently supported\n");
2386 break; /* The correct thing to do here is fall through, but by breaking we might be
2387 able to decode some streams at half the vertical resolution, rather than not al all.
2388 It's also for compatibility with the old behavior. */
2391 case SegmentedFrame:
2392 st->codecpar->field_order = AV_FIELD_PROGRESSIVE;
2393 case SeparateFields:
2394 av_log(mxf->fc, AV_LOG_DEBUG, "video_line_map: (%d, %d), field_dominance: %d\n",
2395 descriptor->video_line_map[0], descriptor->video_line_map[1],
2396 descriptor->field_dominance);
2397 if ((descriptor->video_line_map[0] > 0) && (descriptor->video_line_map[1] > 0)) {
2398 /* Detect coded field order from VideoLineMap:
2399 * (even, even) => bottom field coded first
2400 * (even, odd) => top field coded first
2401 * (odd, even) => top field coded first
2402 * (odd, odd) => bottom field coded first
2404 if ((descriptor->video_line_map[0] + descriptor->video_line_map[1]) % 2) {
2405 switch (descriptor->field_dominance) {
2406 case MXF_FIELD_DOMINANCE_DEFAULT:
2407 case MXF_FIELD_DOMINANCE_FF:
2408 st->codecpar->field_order = AV_FIELD_TT;
2410 case MXF_FIELD_DOMINANCE_FL:
2411 st->codecpar->field_order = AV_FIELD_TB;
2414 avpriv_request_sample(mxf->fc,
2415 "Field dominance %d support",
2416 descriptor->field_dominance);
2419 switch (descriptor->field_dominance) {
2420 case MXF_FIELD_DOMINANCE_DEFAULT:
2421 case MXF_FIELD_DOMINANCE_FF:
2422 st->codecpar->field_order = AV_FIELD_BB;
2424 case MXF_FIELD_DOMINANCE_FL:
2425 st->codecpar->field_order = AV_FIELD_BT;
2428 avpriv_request_sample(mxf->fc,
2429 "Field dominance %d support",
2430 descriptor->field_dominance);
2434 /* Turn field height into frame height. */
2435 st->codecpar->height *= 2;
2438 av_log(mxf->fc, AV_LOG_INFO, "Unknown frame layout type: %d\n", descriptor->frame_layout);
2441 if (st->codecpar->codec_id == AV_CODEC_ID_PRORES) {
2442 switch (descriptor->essence_codec_ul[14]) {
2443 case 1: st->codecpar->codec_tag = MKTAG('a','p','c','o'); break;
2444 case 2: st->codecpar->codec_tag = MKTAG('a','p','c','s'); break;
2445 case 3: st->codecpar->codec_tag = MKTAG('a','p','c','n'); break;
2446 case 4: st->codecpar->codec_tag = MKTAG('a','p','c','h'); break;
2447 case 5: st->codecpar->codec_tag = MKTAG('a','p','4','h'); break;
2448 case 6: st->codecpar->codec_tag = MKTAG('a','p','4','x'); break;
2452 if (st->codecpar->codec_id == AV_CODEC_ID_RAWVIDEO) {
2453 st->codecpar->format = descriptor->pix_fmt;
2454 if (st->codecpar->format == AV_PIX_FMT_NONE) {
2455 pix_fmt_ul = mxf_get_codec_ul(ff_mxf_pixel_format_uls,
2456 &descriptor->essence_codec_ul);
2457 st->codecpar->format = (enum AVPixelFormat)pix_fmt_ul->id;
2458 if (st->codecpar->format== AV_PIX_FMT_NONE) {
2459 st->codecpar->codec_tag = mxf_get_codec_ul(ff_mxf_codec_tag_uls,
2460 &descriptor->essence_codec_ul)->id;
2461 if (!st->codecpar->codec_tag) {
2462 /* support files created before RP224v10 by defaulting to UYVY422
2463 if subsampling is 4:2:2 and component depth is 8-bit */
2464 if (descriptor->horiz_subsampling == 2 &&
2465 descriptor->vert_subsampling == 1 &&
2466 descriptor->component_depth == 8) {
2467 st->codecpar->format = AV_PIX_FMT_UYVY422;
2473 st->need_parsing = AVSTREAM_PARSE_HEADERS;
2474 if (material_track->sequence->origin) {
2475 av_dict_set_int(&st->metadata, "material_track_origin", material_track->sequence->origin, 0);
2477 if (source_track->sequence->origin) {
2478 av_dict_set_int(&st->metadata, "source_track_origin", source_track->sequence->origin, 0);
2480 if (descriptor->aspect_ratio.num && descriptor->aspect_ratio.den)
2481 st->display_aspect_ratio = descriptor->aspect_ratio;
2482 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
2483 container_ul = mxf_get_codec_ul(mxf_sound_essence_container_uls, essence_container_ul);
2484 /* Only overwrite existing codec ID if it is unset or A-law, which is the default according to SMPTE RP 224. */
2485 if (st->codecpar->codec_id == AV_CODEC_ID_NONE || (st->codecpar->codec_id == AV_CODEC_ID_PCM_ALAW && (enum AVCodecID)container_ul->id != AV_CODEC_ID_NONE))
2486 st->codecpar->codec_id = (enum AVCodecID)container_ul->id;
2487 st->codecpar->channels = descriptor->channels;
2489 if (descriptor->sample_rate.den > 0) {
2490 st->codecpar->sample_rate = descriptor->sample_rate.num / descriptor->sample_rate.den;
2491 avpriv_set_pts_info(st, 64, descriptor->sample_rate.den, descriptor->sample_rate.num);
2493 av_log(mxf->fc, AV_LOG_WARNING, "invalid sample rate (%d/%d) "
2494 "found for stream #%d, time base forced to 1/48000\n",
2495 descriptor->sample_rate.num, descriptor->sample_rate.den,
2497 avpriv_set_pts_info(st, 64, 1, 48000);
2500 /* if duration is set, rescale it from EditRate to SampleRate */
2501 if (st->duration != AV_NOPTS_VALUE)
2502 st->duration = av_rescale_q(st->duration,
2503 av_inv_q(material_track->edit_rate),
2506 /* TODO: implement AV_CODEC_ID_RAWAUDIO */
2507 if (st->codecpar->codec_id == AV_CODEC_ID_PCM_S16LE) {
2508 if (descriptor->bits_per_sample > 16 && descriptor->bits_per_sample <= 24)
2509 st->codecpar->codec_id = AV_CODEC_ID_PCM_S24LE;
2510 else if (descriptor->bits_per_sample == 32)
2511 st->codecpar->codec_id = AV_CODEC_ID_PCM_S32LE;
2512 } else if (st->codecpar->codec_id == AV_CODEC_ID_PCM_S16BE) {
2513 if (descriptor->bits_per_sample > 16 && descriptor->bits_per_sample <= 24)
2514 st->codecpar->codec_id = AV_CODEC_ID_PCM_S24BE;
2515 else if (descriptor->bits_per_sample == 32)
2516 st->codecpar->codec_id = AV_CODEC_ID_PCM_S32BE;
2517 } else if (st->codecpar->codec_id == AV_CODEC_ID_MP2) {
2518 st->need_parsing = AVSTREAM_PARSE_FULL;
2520 st->codecpar->bits_per_coded_sample = av_get_bits_per_sample(st->codecpar->codec_id);
2521 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_DATA) {
2522 enum AVMediaType type;
2523 container_ul = mxf_get_codec_ul(mxf_data_essence_container_uls, essence_container_ul);
2524 if (st->codecpar->codec_id == AV_CODEC_ID_NONE)
2525 st->codecpar->codec_id = container_ul->id;
2526 type = avcodec_get_type(st->codecpar->codec_id);
2527 if (type == AVMEDIA_TYPE_SUBTITLE)
2528 st->codecpar->codec_type = type;
2529 if (container_ul->desc)
2530 av_dict_set(&st->metadata, "data_type", container_ul->desc, 0);
2531 if (mxf->eia608_extract &&
2532 !strcmp(container_ul->desc, "vbi_vanc_smpte_436M")) {
2533 st->codecpar->codec_type = AVMEDIA_TYPE_SUBTITLE;
2534 st->codecpar->codec_id = AV_CODEC_ID_EIA_608;
2537 if (descriptor->extradata) {
2538 if (!ff_alloc_extradata(st->codecpar, descriptor->extradata_size)) {
2539 memcpy(st->codecpar->extradata, descriptor->extradata, descriptor->extradata_size);
2541 } else if (st->codecpar->codec_id == AV_CODEC_ID_H264) {
2542 int coded_width = mxf_get_codec_ul(mxf_intra_only_picture_coded_width,
2543 &descriptor->essence_codec_ul)->id;
2545 st->codecpar->width = coded_width;
2546 ret = ff_generate_avci_extradata(st);
2550 if (st->codecpar->codec_type != AVMEDIA_TYPE_DATA && source_track->wrapping != FrameWrapped) {
2551 /* TODO: decode timestamps */
2552 st->need_parsing = AVSTREAM_PARSE_TIMESTAMPS;
2556 for (int i = 0; i < mxf->fc->nb_streams; i++) {
2557 MXFTrack *track1 = mxf->fc->streams[i]->priv_data;
2558 if (track1 && track1->body_sid) {
2559 for (int j = i + 1; j < mxf->fc->nb_streams; j++) {
2560 MXFTrack *track2 = mxf->fc->streams[j]->priv_data;
2561 if (track2 && track1->body_sid == track2->body_sid && track1->wrapping != track2->wrapping) {
2562 if (track1->wrapping == UnknownWrapped)
2563 track1->wrapping = track2->wrapping;
2564 else if (track2->wrapping == UnknownWrapped)
2565 track2->wrapping = track1->wrapping;
2567 av_log(mxf->fc, AV_LOG_ERROR, "stream %d and stream %d have the same BodySID (%d) "
2568 "with different wrapping\n", i, j, track1->body_sid);
2579 static int64_t mxf_timestamp_to_int64(uint64_t timestamp)
2581 struct tm time = { 0 };
2583 time.tm_year = (timestamp >> 48) - 1900;
2584 time.tm_mon = (timestamp >> 40 & 0xFF) - 1;
2585 time.tm_mday = (timestamp >> 32 & 0xFF);
2586 time.tm_hour = (timestamp >> 24 & 0xFF);
2587 time.tm_min = (timestamp >> 16 & 0xFF);
2588 time.tm_sec = (timestamp >> 8 & 0xFF);
2589 msecs = (timestamp & 0xFF) * 4;
2591 /* Clip values for legacy reasons. Maybe we should return error instead? */
2592 time.tm_mon = av_clip(time.tm_mon, 0, 11);
2593 time.tm_mday = av_clip(time.tm_mday, 1, 31);
2594 time.tm_hour = av_clip(time.tm_hour, 0, 23);
2595 time.tm_min = av_clip(time.tm_min, 0, 59);
2596 time.tm_sec = av_clip(time.tm_sec, 0, 59);
2597 msecs = av_clip(msecs, 0, 999);
2599 return (int64_t)av_timegm(&time) * 1000000 + msecs * 1000;
2602 #define SET_STR_METADATA(pb, name, str) do { \
2603 if ((ret = mxf_read_utf16be_string(pb, size, &str)) < 0) \
2605 av_dict_set(&s->metadata, name, str, AV_DICT_DONT_STRDUP_VAL); \
2608 #define SET_UID_METADATA(pb, name, var, str) do { \
2609 avio_read(pb, var, 16); \
2610 if ((ret = mxf_uid_to_str(var, &str)) < 0) \
2612 av_dict_set(&s->metadata, name, str, AV_DICT_DONT_STRDUP_VAL); \
2615 #define SET_TS_METADATA(pb, name, var, str) do { \
2616 var = avio_rb64(pb); \
2617 if (var && (ret = avpriv_dict_set_timestamp(&s->metadata, name, mxf_timestamp_to_int64(var))) < 0) \
2621 static int mxf_read_identification_metadata(void *arg, AVIOContext *pb, int tag, int size, UID _uid, int64_t klv_offset)
2623 MXFContext *mxf = arg;
2624 AVFormatContext *s = mxf->fc;
2631 SET_STR_METADATA(pb, "company_name", str);
2634 SET_STR_METADATA(pb, "product_name", str);
2637 SET_STR_METADATA(pb, "product_version", str);
2640 SET_UID_METADATA(pb, "product_uid", uid, str);
2643 SET_TS_METADATA(pb, "modification_date", ts, str);
2646 SET_STR_METADATA(pb, "application_platform", str);
2649 SET_UID_METADATA(pb, "generation_uid", uid, str);
2652 SET_UID_METADATA(pb, "uid", uid, str);
2658 static int mxf_read_preface_metadata(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
2660 MXFContext *mxf = arg;
2661 AVFormatContext *s = mxf->fc;
2665 if (tag >= 0x8000 && (IS_KLV_KEY(uid, mxf_avid_project_name))) {
2666 SET_STR_METADATA(pb, "project_name", str);
2671 static const MXFMetadataReadTableEntry mxf_metadata_read_table[] = {
2672 { { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x05,0x01,0x00 }, mxf_read_primer_pack },
2673 { { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02,0x01,0x00 }, mxf_read_partition_pack },
2674 { { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02,0x02,0x00 }, mxf_read_partition_pack },
2675 { { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02,0x03,0x00 }, mxf_read_partition_pack },
2676 { { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02,0x04,0x00 }, mxf_read_partition_pack },
2677 { { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x03,0x01,0x00 }, mxf_read_partition_pack },
2678 { { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x03,0x02,0x00 }, mxf_read_partition_pack },
2679 { { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x03,0x03,0x00 }, mxf_read_partition_pack },
2680 { { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x03,0x04,0x00 }, mxf_read_partition_pack },
2681 { { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x04,0x02,0x00 }, mxf_read_partition_pack },
2682 { { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x04,0x04,0x00 }, mxf_read_partition_pack },
2683 { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x2f,0x00 }, mxf_read_preface_metadata },
2684 { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x30,0x00 }, mxf_read_identification_metadata },
2685 { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x18,0x00 }, mxf_read_content_storage, 0, AnyType },
2686 { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x37,0x00 }, mxf_read_package, sizeof(MXFPackage), SourcePackage },
2687 { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x36,0x00 }, mxf_read_package, sizeof(MXFPackage), MaterialPackage },
2688 { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x0f,0x00 }, mxf_read_sequence, sizeof(MXFSequence), Sequence },
2689 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x05,0x00 }, mxf_read_essence_group, sizeof(MXFEssenceGroup), EssenceGroup},
2690 { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x11,0x00 }, mxf_read_source_clip, sizeof(MXFStructuralComponent), SourceClip },
2691 { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x3f,0x00 }, mxf_read_tagged_value, sizeof(MXFTaggedValue), TaggedValue },
2692 { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x44,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), MultipleDescriptor },
2693 { { 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 */
2694 { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x28,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* CDCI */
2695 { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x29,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* RGBA */
2696 { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* Wave */
2697 { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* AES3 */
2698 { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* MPEG2VideoDescriptor */
2699 { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x5b,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* VBI - SMPTE 436M */
2700 { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x5c,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* VANC/VBI - SMPTE 436M */
2701 { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x5e,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* MPEG2AudioDescriptor */
2702 { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x64,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* DC Timed Text Descriptor */
2703 { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x3A,0x00 }, mxf_read_track, sizeof(MXFTrack), Track }, /* Static Track */
2704 { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x3B,0x00 }, mxf_read_track, sizeof(MXFTrack), Track }, /* Generic Track */
2705 { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x14,0x00 }, mxf_read_timecode_component, sizeof(MXFTimecodeComponent), TimecodeComponent },
2706 { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x0c,0x00 }, mxf_read_pulldown_component, sizeof(MXFPulldownComponent), PulldownComponent },
2707 { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x04,0x01,0x02,0x02,0x00,0x00 }, mxf_read_cryptographic_context, sizeof(MXFCryptoContext), CryptoContext },
2708 { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x10,0x01,0x00 }, mxf_read_index_table_segment, sizeof(MXFIndexTableSegment), IndexTableSegment },
2709 { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x23,0x00 }, mxf_read_essence_container_data, sizeof(MXFEssenceContainerData), EssenceContainerData },
2710 { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, NULL, 0, AnyType },
2713 static int mxf_metadataset_init(MXFMetadataSet *ctx, enum MXFMetadataSetType type)
2716 case MultipleDescriptor:
2718 ((MXFDescriptor*)ctx)->pix_fmt = AV_PIX_FMT_NONE;
2719 ((MXFDescriptor*)ctx)->duration = AV_NOPTS_VALUE;
2727 static int mxf_read_local_tags(MXFContext *mxf, KLVPacket *klv, MXFMetadataReadFunc *read_child, int ctx_size, enum MXFMetadataSetType type)
2729 AVIOContext *pb = mxf->fc->pb;
2730 MXFMetadataSet *ctx = ctx_size ? av_mallocz(ctx_size) : mxf;
2731 uint64_t klv_end = avio_tell(pb) + klv->length;
2734 return AVERROR(ENOMEM);
2735 mxf_metadataset_init(ctx, type);
2736 while (avio_tell(pb) + 4 < klv_end && !avio_feof(pb)) {
2738 int tag = avio_rb16(pb);
2739 int size = avio_rb16(pb); /* KLV specified by 0x53 */
2740 uint64_t next = avio_tell(pb) + size;
2743 av_log(mxf->fc, AV_LOG_TRACE, "local tag %#04x size %d\n", tag, size);
2744 if (!size) { /* ignore empty tag, needed for some files with empty UMID tag */
2745 av_log(mxf->fc, AV_LOG_ERROR, "local tag %#04x with 0 size\n", tag);
2748 if (tag > 0x7FFF) { /* dynamic tag */
2750 for (i = 0; i < mxf->local_tags_count; i++) {
2751 int local_tag = AV_RB16(mxf->local_tags+i*18);
2752 if (local_tag == tag) {
2753 memcpy(uid, mxf->local_tags+i*18+2, 16);
2754 av_log(mxf->fc, AV_LOG_TRACE, "local tag %#04x\n", local_tag);
2755 PRINT_KEY(mxf->fc, "uid", uid);
2759 if (ctx_size && tag == 0x3C0A) {
2760 avio_read(pb, ctx->uid, 16);
2761 } else if ((ret = read_child(ctx, pb, tag, size, uid, -1)) < 0) {
2763 mxf_free_metadataset(&ctx, 1);
2767 /* Accept the 64k local set limit being exceeded (Avid). Don't accept
2768 * it extending past the end of the KLV though (zzuf5.mxf). */
2769 if (avio_tell(pb) > klv_end) {
2772 mxf_free_metadataset(&ctx, 1);
2775 av_log(mxf->fc, AV_LOG_ERROR,
2776 "local tag %#04x extends past end of local set @ %#"PRIx64"\n",
2778 return AVERROR_INVALIDDATA;
2779 } else if (avio_tell(pb) <= next) /* only seek forward, else this can loop for a long time */
2780 avio_seek(pb, next, SEEK_SET);
2782 if (ctx_size) ctx->type = type;
2783 return ctx_size ? mxf_add_metadata_set(mxf, ctx) : 0;
2787 * Matches any partition pack key, in other words:
2791 * @return non-zero if the key is a partition pack key, zero otherwise
2793 static int mxf_is_partition_pack_key(UID key)
2795 //NOTE: this is a little lax since it doesn't constraint key[14]
2796 return !memcmp(key, mxf_header_partition_pack_key, 13) &&
2797 key[13] >= 2 && key[13] <= 4;
2801 * Parses a metadata KLV
2802 * @return <0 on error, 0 otherwise
2804 static int mxf_parse_klv(MXFContext *mxf, KLVPacket klv, MXFMetadataReadFunc *read,
2805 int ctx_size, enum MXFMetadataSetType type)
2807 AVFormatContext *s = mxf->fc;
2809 if (klv.key[5] == 0x53) {
2810 res = mxf_read_local_tags(mxf, &klv, read, ctx_size, type);
2812 uint64_t next = avio_tell(s->pb) + klv.length;
2813 res = read(mxf, s->pb, 0, klv.length, klv.key, klv.offset);
2815 /* only seek forward, else this can loop for a long time */
2816 if (avio_tell(s->pb) > next) {
2817 av_log(s, AV_LOG_ERROR, "read past end of KLV @ %#"PRIx64"\n",
2819 return AVERROR_INVALIDDATA;
2822 avio_seek(s->pb, next, SEEK_SET);
2825 av_log(s, AV_LOG_ERROR, "error reading header metadata\n");
2832 * Seeks to the previous partition and parses it, if possible
2833 * @return <= 0 if we should stop parsing, > 0 if we should keep going
2835 static int mxf_seek_to_previous_partition(MXFContext *mxf)
2837 AVIOContext *pb = mxf->fc->pb;
2839 int64_t current_partition_ofs;
2842 if (!mxf->current_partition ||
2843 mxf->run_in + mxf->current_partition->previous_partition <= mxf->last_forward_tell)
2844 return 0; /* we've parsed all partitions */
2846 /* seek to previous partition */
2847 current_partition_ofs = mxf->current_partition->pack_ofs; //includes run-in
2848 avio_seek(pb, mxf->run_in + mxf->current_partition->previous_partition, SEEK_SET);
2849 mxf->current_partition = NULL;
2851 av_log(mxf->fc, AV_LOG_TRACE, "seeking to previous partition\n");
2853 /* Make sure this is actually a PartitionPack, and if so parse it.
2856 if ((ret = klv_read_packet(&klv, pb)) < 0) {
2857 av_log(mxf->fc, AV_LOG_ERROR, "failed to read PartitionPack KLV\n");
2861 if (!mxf_is_partition_pack_key(klv.key)) {
2862 av_log(mxf->fc, AV_LOG_ERROR, "PreviousPartition @ %" PRIx64 " isn't a PartitionPack\n", klv.offset);
2863 return AVERROR_INVALIDDATA;
2866 /* We can't just check ofs >= current_partition_ofs because PreviousPartition
2867 * can point to just before the current partition, causing klv_read_packet()
2868 * to sync back up to it. See deadlock3.mxf
2870 if (klv.offset >= current_partition_ofs) {
2871 av_log(mxf->fc, AV_LOG_ERROR, "PreviousPartition for PartitionPack @ %"
2872 PRIx64 " indirectly points to itself\n", current_partition_ofs);
2873 return AVERROR_INVALIDDATA;
2876 if ((ret = mxf_parse_klv(mxf, klv, mxf_read_partition_pack, 0, 0)) < 0)
2883 * Called when essence is encountered
2884 * @return <= 0 if we should stop parsing, > 0 if we should keep going
2886 static int mxf_parse_handle_essence(MXFContext *mxf)
2888 AVIOContext *pb = mxf->fc->pb;
2891 if (mxf->parsing_backward) {
2892 return mxf_seek_to_previous_partition(mxf);
2894 if (!mxf->footer_partition) {
2895 av_log(mxf->fc, AV_LOG_TRACE, "no FooterPartition\n");
2899 av_log(mxf->fc, AV_LOG_TRACE, "seeking to FooterPartition\n");
2901 /* remember where we were so we don't end up seeking further back than this */
2902 mxf->last_forward_tell = avio_tell(pb);
2904 if (!(pb->seekable & AVIO_SEEKABLE_NORMAL)) {
2905 av_log(mxf->fc, AV_LOG_INFO, "file is not seekable - not parsing FooterPartition\n");
2909 /* seek to FooterPartition and parse backward */
2910 if ((ret = avio_seek(pb, mxf->run_in + mxf->footer_partition, SEEK_SET)) < 0) {
2911 av_log(mxf->fc, AV_LOG_ERROR,
2912 "failed to seek to FooterPartition @ 0x%" PRIx64
2913 " (%"PRId64") - partial file?\n",
2914 mxf->run_in + mxf->footer_partition, ret);
2918 mxf->current_partition = NULL;
2919 mxf->parsing_backward = 1;
2926 * Called when the next partition or EOF is encountered
2927 * @return <= 0 if we should stop parsing, > 0 if we should keep going
2929 static int mxf_parse_handle_partition_or_eof(MXFContext *mxf)
2931 return mxf->parsing_backward ? mxf_seek_to_previous_partition(mxf) : 1;
2934 static MXFWrappingScheme mxf_get_wrapping_by_body_sid(AVFormatContext *s, int body_sid)
2936 for (int i = 0; i < s->nb_streams; i++) {
2937 MXFTrack *track = s->streams[i]->priv_data;
2938 if (track && track->body_sid == body_sid && track->wrapping != UnknownWrapped)
2939 return track->wrapping;
2941 return UnknownWrapped;
2945 * Figures out the proper offset and length of the essence container in each partition
2947 static void mxf_compute_essence_containers(AVFormatContext *s)
2949 MXFContext *mxf = s->priv_data;
2952 for (x = 0; x < mxf->partitions_count; x++) {
2953 MXFPartition *p = &mxf->partitions[x];
2954 MXFWrappingScheme wrapping;
2957 continue; /* BodySID == 0 -> no essence */
2959 /* for clip wrapped essences we point essence_offset after the KL (usually klv.offset + 20 or 25)
2960 * otherwise we point essence_offset at the key of the first essence KLV.
2963 wrapping = (mxf->op == OPAtom) ? ClipWrapped : mxf_get_wrapping_by_body_sid(s, p->body_sid);
2965 if (wrapping == ClipWrapped) {
2966 p->essence_offset = p->first_essence_klv.next_klv - p->first_essence_klv.length;
2967 p->essence_length = p->first_essence_klv.length;
2969 p->essence_offset = p->first_essence_klv.offset;
2971 /* essence container spans to the next partition */
2972 if (x < mxf->partitions_count - 1)
2973 p->essence_length = mxf->partitions[x+1].this_partition - p->essence_offset;
2975 if (p->essence_length < 0) {
2976 /* next ThisPartition < essence_offset */
2977 p->essence_length = 0;
2978 av_log(mxf->fc, AV_LOG_ERROR,
2979 "partition %i: bad ThisPartition = %"PRIX64"\n",
2980 x+1, mxf->partitions[x+1].this_partition);
2986 static int is_pcm(enum AVCodecID codec_id)
2988 /* we only care about "normal" PCM codecs until we get samples */
2989 return codec_id >= AV_CODEC_ID_PCM_S16LE && codec_id < AV_CODEC_ID_PCM_S24DAUD;
2992 static MXFIndexTable *mxf_find_index_table(MXFContext *mxf, int index_sid)
2995 for (i = 0; i < mxf->nb_index_tables; i++)
2996 if (mxf->index_tables[i].index_sid == index_sid)
2997 return &mxf->index_tables[i];
3002 * Deal with the case where for some audio atoms EditUnitByteCount is
3003 * very small (2, 4..). In those cases we should read more than one
3004 * sample per call to mxf_read_packet().
3006 static void mxf_compute_edit_units_per_packet(MXFContext *mxf, AVStream *st)
3008 MXFTrack *track = st->priv_data;
3013 track->edit_units_per_packet = 1;
3014 if (track->wrapping != ClipWrapped)
3017 t = mxf_find_index_table(mxf, track->index_sid);
3019 /* expect PCM with exactly one index table segment and a small (< 32) EUBC */
3020 if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO ||
3021 !is_pcm(st->codecpar->codec_id) ||
3023 t->nb_segments != 1 ||
3024 t->segments[0]->edit_unit_byte_count >= 32)
3027 /* arbitrarily default to 48 kHz PAL audio frame size */
3028 /* TODO: We could compute this from the ratio between the audio
3029 * and video edit rates for 48 kHz NTSC we could use the
3030 * 1802-1802-1802-1802-1801 pattern. */
3031 track->edit_units_per_packet = FFMAX(1, track->edit_rate.num / track->edit_rate.den / 25);
3035 * Deal with the case where ClipWrapped essences does not have any IndexTableSegments.
3037 static int mxf_handle_missing_index_segment(MXFContext *mxf, AVStream *st)
3039 MXFTrack *track = st->priv_data;
3040 MXFIndexTableSegment *segment = NULL;
3041 MXFPartition *p = NULL;
3042 int essence_partition_count = 0;
3043 int edit_unit_byte_count = 0;
3046 if (!track || track->wrapping != ClipWrapped)
3049 /* check if track already has an IndexTableSegment */
3050 for (i = 0; i < mxf->metadata_sets_count; i++) {
3051 if (mxf->metadata_sets[i]->type == IndexTableSegment) {
3052 MXFIndexTableSegment *s = (MXFIndexTableSegment*)mxf->metadata_sets[i];
3053 if (s->body_sid == track->body_sid)
3058 /* find the essence partition */
3059 for (i = 0; i < mxf->partitions_count; i++) {
3060 /* BodySID == 0 -> no essence */
3061 if (mxf->partitions[i].body_sid != track->body_sid)
3064 p = &mxf->partitions[i];
3065 essence_partition_count++;
3068 /* only handle files with a single essence partition */
3069 if (essence_partition_count != 1)
3072 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && is_pcm(st->codecpar->codec_id)) {
3073 edit_unit_byte_count = (av_get_bits_per_sample(st->codecpar->codec_id) * st->codecpar->channels) >> 3;
3074 } else if (st->duration > 0 && p->first_essence_klv.length > 0 && p->first_essence_klv.length % st->duration == 0) {
3075 edit_unit_byte_count = p->first_essence_klv.length / st->duration;
3078 if (edit_unit_byte_count <= 0)
3081 av_log(mxf->fc, AV_LOG_WARNING, "guessing index for stream %d using edit unit byte count %d\n", st->index, edit_unit_byte_count);
3083 if (!(segment = av_mallocz(sizeof(*segment))))
3084 return AVERROR(ENOMEM);
3086 if ((ret = mxf_add_metadata_set(mxf, segment))) {
3087 mxf_free_metadataset((MXFMetadataSet**)&segment, 1);
3091 /* Make sure we have nonzero unique index_sid, body_sid will be ok, because
3092 * using the same SID for index is forbidden in MXF. */
3093 if (!track->index_sid)
3094 track->index_sid = track->body_sid;
3096 segment->type = IndexTableSegment;
3097 /* stream will be treated as small EditUnitByteCount */
3098 segment->edit_unit_byte_count = edit_unit_byte_count;
3099 segment->index_start_position = 0;
3100 segment->index_duration = st->duration;
3101 segment->index_edit_rate = av_inv_q(st->time_base);
3102 segment->index_sid = track->index_sid;
3103 segment->body_sid = p->body_sid;
3107 static void mxf_read_random_index_pack(AVFormatContext *s)
3109 MXFContext *mxf = s->priv_data;
3111 int64_t file_size, max_rip_length, min_rip_length;
3114 if (!(s->pb->seekable & AVIO_SEEKABLE_NORMAL))
3117 file_size = avio_size(s->pb);
3119 /* S377m says to check the RIP length for "silly" values, without defining "silly".
3120 * The limit below assumes a file with nothing but partition packs and a RIP.
3121 * Before changing this, consider that a muxer may place each sample in its own partition.
3123 * 105 is the size of the smallest possible PartitionPack
3124 * 12 is the size of each RIP entry
3125 * 28 is the size of the RIP header and footer, assuming an 8-byte BER
3127 max_rip_length = ((file_size - mxf->run_in) / 105) * 12 + 28;
3128 max_rip_length = FFMIN(max_rip_length, INT_MAX); //2 GiB and up is also silly
3130 /* We're only interested in RIPs with at least two entries.. */
3131 min_rip_length = 16+1+24+4;
3133 /* See S377m section 11 */
3134 avio_seek(s->pb, file_size - 4, SEEK_SET);
3135 length = avio_rb32(s->pb);
3137 if (length < min_rip_length || length > max_rip_length)
3139 avio_seek(s->pb, file_size - length, SEEK_SET);
3140 if (klv_read_packet(&klv, s->pb) < 0 ||
3141 !IS_KLV_KEY(klv.key, mxf_random_index_pack_key))
3143 if (klv.next_klv != file_size || klv.length <= 4 || (klv.length - 4) % 12) {
3144 av_log(s, AV_LOG_WARNING, "Invalid RIP KLV length\n");
3148 avio_skip(s->pb, klv.length - 12);
3149 mxf->footer_partition = avio_rb64(s->pb);
3152 if (mxf->run_in + mxf->footer_partition >= file_size) {
3153 av_log(s, AV_LOG_WARNING, "bad FooterPartition in RIP - ignoring\n");
3154 mxf->footer_partition = 0;
3158 avio_seek(s->pb, mxf->run_in, SEEK_SET);
3161 static int mxf_read_header(AVFormatContext *s)
3163 MXFContext *mxf = s->priv_data;
3165 int64_t essence_offset = 0;
3168 mxf->last_forward_tell = INT64_MAX;
3170 if (!mxf_read_sync(s->pb, mxf_header_partition_pack_key, 14)) {
3171 av_log(s, AV_LOG_ERROR, "could not find header partition pack key\n");
3172 return AVERROR_INVALIDDATA;
3174 avio_seek(s->pb, -14, SEEK_CUR);
3176 mxf->run_in = avio_tell(s->pb);
3178 mxf_read_random_index_pack(s);
3180 while (!avio_feof(s->pb)) {
3181 const MXFMetadataReadTableEntry *metadata;
3183 if (klv_read_packet(&klv, s->pb) < 0) {
3184 /* EOF - seek to previous partition or stop */
3185 if(mxf_parse_handle_partition_or_eof(mxf) <= 0)
3191 PRINT_KEY(s, "read header", klv.key);
3192 av_log(s, AV_LOG_TRACE, "size %"PRIu64" offset %#"PRIx64"\n", klv.length, klv.offset);
3193 if (IS_KLV_KEY(klv.key, mxf_encrypted_triplet_key) ||
3194 IS_KLV_KEY(klv.key, mxf_essence_element_key) ||
3195 IS_KLV_KEY(klv.key, mxf_canopus_essence_element_key) ||
3196 IS_KLV_KEY(klv.key, mxf_avid_essence_element_key) ||
3197 IS_KLV_KEY(klv.key, mxf_system_item_key_cp) ||
3198 IS_KLV_KEY(klv.key, mxf_system_item_key_gc)) {
3200 if (!mxf->current_partition) {
3201 av_log(mxf->fc, AV_LOG_ERROR, "found essence prior to first PartitionPack\n");
3202 return AVERROR_INVALIDDATA;
3205 if (!mxf->current_partition->first_essence_klv.offset)
3206 mxf->current_partition->first_essence_klv = klv;
3208 if (!essence_offset)
3209 essence_offset = klv.offset;
3211 /* seek to footer, previous partition or stop */
3212 if (mxf_parse_handle_essence(mxf) <= 0)
3215 } else if (mxf_is_partition_pack_key(klv.key) && mxf->current_partition) {
3216 /* next partition pack - keep going, seek to previous partition or stop */
3217 if(mxf_parse_handle_partition_or_eof(mxf) <= 0)
3219 else if (mxf->parsing_backward)
3221 /* we're still parsing forward. proceed to parsing this partition pack */
3224 for (metadata = mxf_metadata_read_table; metadata->read; metadata++) {
3225 if (IS_KLV_KEY(klv.key, metadata->key)) {
3226 if ((ret = mxf_parse_klv(mxf, klv, metadata->read, metadata->ctx_size, metadata->type)) < 0)
3231 if (!metadata->read) {
3232 av_log(s, AV_LOG_VERBOSE, "Dark key " PRIxUID "\n",
3234 avio_skip(s->pb, klv.length);
3237 /* FIXME avoid seek */
3238 if (!essence_offset) {
3239 av_log(s, AV_LOG_ERROR, "no essence\n");
3240 ret = AVERROR_INVALIDDATA;
3243 avio_seek(s->pb, essence_offset, SEEK_SET);
3245 /* we need to do this before computing the index tables
3246 * to be able to fill in zero IndexDurations with st->duration */
3247 if ((ret = mxf_parse_structural_metadata(mxf)) < 0)
3250 for (int i = 0; i < s->nb_streams; i++)
3251 mxf_handle_missing_index_segment(mxf, s->streams[i]);
3253 if ((ret = mxf_compute_index_tables(mxf)) < 0)
3256 if (mxf->nb_index_tables > 1) {
3257 /* TODO: look up which IndexSID to use via EssenceContainerData */
3258 av_log(mxf->fc, AV_LOG_INFO, "got %i index tables - only the first one (IndexSID %i) will be used\n",
3259 mxf->nb_index_tables, mxf->index_tables[0].index_sid);
3260 } else if (mxf->nb_index_tables == 0 && mxf->op == OPAtom && (s->error_recognition & AV_EF_EXPLODE)) {
3261 av_log(mxf->fc, AV_LOG_ERROR, "cannot demux OPAtom without an index\n");
3262 ret = AVERROR_INVALIDDATA;
3266 mxf_compute_essence_containers(s);
3268 for (int i = 0; i < s->nb_streams; i++)
3269 mxf_compute_edit_units_per_packet(mxf, s->streams[i]);
3278 /* Get the edit unit of the next packet from current_offset in a track. The returned edit unit can be original_duration as well! */
3279 static int mxf_get_next_track_edit_unit(MXFContext *mxf, MXFTrack *track, int64_t current_offset, int64_t *edit_unit_out)
3281 int64_t a, b, m, offset;
3282 MXFIndexTable *t = mxf_find_index_table(mxf, track->index_sid);
3284 if (!t || track->original_duration <= 0)
3288 b = track->original_duration;
3292 if (mxf_edit_unit_absolute_offset(mxf, t, m, track->edit_rate, NULL, &offset, NULL, 0) < 0)
3294 if (offset < current_offset)
3305 static int64_t mxf_compute_sample_count(MXFContext *mxf, AVStream *st,
3308 int i, total = 0, size = 0;
3309 MXFTrack *track = st->priv_data;
3310 AVRational time_base = av_inv_q(track->edit_rate);
3311 AVRational sample_rate = av_inv_q(st->time_base);
3312 const MXFSamplesPerFrame *spf = NULL;
3313 int64_t sample_count;
3315 // For non-audio sample_count equals current edit unit
3316 if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
3319 if ((sample_rate.num / sample_rate.den) == 48000)
3320 spf = ff_mxf_get_samples_per_frame(mxf->fc, time_base);
3322 int remainder = (sample_rate.num * time_base.num) %
3323 (time_base.den * sample_rate.den);
3325 av_log(mxf->fc, AV_LOG_WARNING,
3326 "seeking detected on stream #%d with time base (%d/%d) and "
3327 "sample rate (%d/%d), audio pts won't be accurate.\n",
3328 st->index, time_base.num, time_base.den,
3329 sample_rate.num, sample_rate.den);
3330 return av_rescale_q(edit_unit, sample_rate, track->edit_rate);
3333 while (spf->samples_per_frame[size]) {
3334 total += spf->samples_per_frame[size];
3340 sample_count = (edit_unit / size) * (uint64_t)total;
3341 for (i = 0; i < edit_unit % size; i++) {
3342 sample_count += spf->samples_per_frame[i];
3345 return sample_count;
3349 * Make sure track->sample_count is correct based on what offset we're currently at.
3350 * Also determine the next edit unit (or packet) offset.
3351 * @return next_ofs if OK, <0 on error
3353 static int64_t mxf_set_current_edit_unit(MXFContext *mxf, AVStream *st, int64_t current_offset, int resync)
3355 int64_t next_ofs = -1;
3356 MXFTrack *track = st->priv_data;
3357 int64_t edit_unit = av_rescale_q(track->sample_count, st->time_base, av_inv_q(track->edit_rate));
3358 int64_t new_edit_unit;
3359 MXFIndexTable *t = mxf_find_index_table(mxf, track->index_sid);
3361 if (!t || track->wrapping == UnknownWrapped)
3364 if (mxf_edit_unit_absolute_offset(mxf, t, edit_unit + track->edit_units_per_packet, track->edit_rate, NULL, &next_ofs, NULL, 0) < 0 &&
3365 (next_ofs = mxf_essence_container_end(mxf, t->body_sid)) <= 0) {
3366 av_log(mxf->fc, AV_LOG_ERROR, "unable to compute the size of the last packet\n");
3370 /* check if the next edit unit offset (next_ofs) starts ahead of current_offset */
3371 if (next_ofs > current_offset)
3375 av_log(mxf->fc, AV_LOG_ERROR, "cannot find current edit unit for stream %d, invalid index?\n", st->index);
3379 if (mxf_get_next_track_edit_unit(mxf, track, current_offset + 1, &new_edit_unit) < 0 || new_edit_unit <= 0) {
3380 av_log(mxf->fc, AV_LOG_ERROR, "failed to find next track edit unit in stream %d\n", st->index);
3385 track->sample_count = mxf_compute_sample_count(mxf, st, new_edit_unit);
3386 av_log(mxf->fc, AV_LOG_WARNING, "edit unit sync lost on stream %d, jumping from %"PRId64" to %"PRId64"\n", st->index, edit_unit, new_edit_unit);
3388 return mxf_set_current_edit_unit(mxf, st, current_offset, 0);
3391 static int mxf_set_audio_pts(MXFContext *mxf, AVCodecParameters *par,
3394 AVStream *st = mxf->fc->streams[pkt->stream_index];
3395 MXFTrack *track = st->priv_data;
3396 int64_t bits_per_sample = par->bits_per_coded_sample;
3398 if (!bits_per_sample)
3399 bits_per_sample = av_get_bits_per_sample(par->codec_id);
3401 pkt->pts = track->sample_count;
3403 if ( par->channels <= 0
3404 || bits_per_sample <= 0
3405 || par->channels * (int64_t)bits_per_sample < 8)
3406 track->sample_count = mxf_compute_sample_count(mxf, st, av_rescale_q(track->sample_count, st->time_base, av_inv_q(track->edit_rate)) + 1);
3408 track->sample_count += pkt->size / (par->channels * (int64_t)bits_per_sample / 8);
3413 static int mxf_set_pts(MXFContext *mxf, AVStream *st, AVPacket *pkt)
3415 AVCodecParameters *par = st->codecpar;
3416 MXFTrack *track = st->priv_data;
3418 if (par->codec_type == AVMEDIA_TYPE_VIDEO) {
3419 /* see if we have an index table to derive timestamps from */
3420 MXFIndexTable *t = mxf_find_index_table(mxf, track->index_sid);
3422 if (t && track->sample_count < t->nb_ptses) {
3423 pkt->dts = track->sample_count + t->first_dts;
3424 pkt->pts = t->ptses[track->sample_count];
3425 } else if (track->intra_only) {
3426 /* intra-only -> PTS = EditUnit.
3427 * let utils.c figure out DTS since it can be < PTS if low_delay = 0 (Sony IMX30) */
3428 pkt->pts = track->sample_count;
3430 track->sample_count++;
3431 } else if (par->codec_type == AVMEDIA_TYPE_AUDIO) {
3432 int ret = mxf_set_audio_pts(mxf, par, pkt);
3436 pkt->dts = pkt->pts = track->sample_count;
3438 track->sample_count++;
3443 static int mxf_read_packet(AVFormatContext *s, AVPacket *pkt)
3446 MXFContext *mxf = s->priv_data;
3450 int64_t max_data_size;
3451 int64_t pos = avio_tell(s->pb);
3453 if (pos < mxf->current_klv_data.next_klv - mxf->current_klv_data.length || pos >= mxf->current_klv_data.next_klv) {
3454 mxf->current_klv_data = (KLVPacket){{0}};
3455 ret = klv_read_packet(&klv, s->pb);
3458 max_data_size = klv.length;
3459 pos = klv.next_klv - klv.length;
3460 PRINT_KEY(s, "read packet", klv.key);
3461 av_log(s, AV_LOG_TRACE, "size %"PRIu64" offset %#"PRIx64"\n", klv.length, klv.offset);
3462 if (IS_KLV_KEY(klv.key, mxf_encrypted_triplet_key)) {
3463 ret = mxf_decrypt_triplet(s, pkt, &klv);
3465 av_log(s, AV_LOG_ERROR, "invalid encoded triplet\n");
3471 klv = mxf->current_klv_data;
3472 max_data_size = klv.next_klv - pos;
3474 if (IS_KLV_KEY(klv.key, mxf_essence_element_key) ||
3475 IS_KLV_KEY(klv.key, mxf_canopus_essence_element_key) ||
3476 IS_KLV_KEY(klv.key, mxf_avid_essence_element_key)) {
3477 int body_sid = find_body_sid_by_absolute_offset(mxf, klv.offset);
3478 int index = mxf_get_stream_index(s, &klv, body_sid);
3484 av_log(s, AV_LOG_ERROR,
3485 "error getting stream index %"PRIu32"\n",
3486 AV_RB32(klv.key + 12));
3490 st = s->streams[index];
3491 track = st->priv_data;
3493 if (s->streams[index]->discard == AVDISCARD_ALL)
3496 next_ofs = mxf_set_current_edit_unit(mxf, st, pos, 1);
3498 if (track->wrapping != FrameWrapped) {
3501 if (next_ofs <= 0) {
3502 // If we have no way to packetize the data, then return it in chunks...
3503 if (klv.next_klv - klv.length == pos && max_data_size > MXF_MAX_CHUNK_SIZE) {
3504 st->need_parsing = AVSTREAM_PARSE_FULL;
3505 avpriv_request_sample(s, "Huge KLV without proper index in non-frame wrapped essence");
3507 size = FFMIN(max_data_size, MXF_MAX_CHUNK_SIZE);
3509 if ((size = next_ofs - pos) <= 0) {
3510 av_log(s, AV_LOG_ERROR, "bad size: %"PRId64"\n", size);
3511 ret = AVERROR_INVALIDDATA;
3514 // We must not overread, because the next edit unit might be in another KLV
3515 if (size > max_data_size)
3516 size = max_data_size;
3519 mxf->current_klv_data = klv;
3522 klv.next_klv = klv.offset + klv.length;
3525 /* check for 8 channels AES3 element */
3526 if (klv.key[12] == 0x06 && klv.key[13] == 0x01 && klv.key[14] == 0x10) {
3527 ret = mxf_get_d10_aes3_packet(s->pb, s->streams[index],
3530 av_log(s, AV_LOG_ERROR, "error reading D-10 aes3 frame\n");
3531 mxf->current_klv_data = (KLVPacket){{0}};
3534 } else if (mxf->eia608_extract &&
3535 s->streams[index]->codecpar->codec_id == AV_CODEC_ID_EIA_608) {
3536 ret = mxf_get_eia608_packet(s, s->streams[index], pkt, klv.length);
3538 mxf->current_klv_data = (KLVPacket){{0}};
3542 ret = av_get_packet(s->pb, pkt, klv.length);
3544 mxf->current_klv_data = (KLVPacket){{0}};
3548 pkt->stream_index = index;
3549 pkt->pos = klv.offset;
3551 ret = mxf_set_pts(mxf, st, pkt);
3553 mxf->current_klv_data = (KLVPacket){{0}};
3557 /* seek for truncated packets */
3558 avio_seek(s->pb, klv.next_klv, SEEK_SET);
3563 avio_skip(s->pb, max_data_size);
3564 mxf->current_klv_data = (KLVPacket){{0}};
3567 return avio_feof(s->pb) ? AVERROR_EOF : ret;
3570 static int mxf_read_close(AVFormatContext *s)
3572 MXFContext *mxf = s->priv_data;
3575 av_freep(&mxf->packages_refs);
3576 av_freep(&mxf->essence_container_data_refs);
3578 for (i = 0; i < s->nb_streams; i++)
3579 s->streams[i]->priv_data = NULL;
3581 for (i = 0; i < mxf->metadata_sets_count; i++) {
3582 mxf_free_metadataset(mxf->metadata_sets + i, 1);
3584 av_freep(&mxf->partitions);
3585 av_freep(&mxf->metadata_sets);
3586 av_freep(&mxf->aesc);
3587 av_freep(&mxf->local_tags);
3589 if (mxf->index_tables) {
3590 for (i = 0; i < mxf->nb_index_tables; i++) {
3591 av_freep(&mxf->index_tables[i].segments);
3592 av_freep(&mxf->index_tables[i].ptses);
3593 av_freep(&mxf->index_tables[i].fake_index);
3594 av_freep(&mxf->index_tables[i].offsets);
3597 av_freep(&mxf->index_tables);
3602 static int mxf_probe(const AVProbeData *p) {
3603 const uint8_t *bufp = p->buf;
3604 const uint8_t *end = p->buf + p->buf_size;
3606 if (p->buf_size < sizeof(mxf_header_partition_pack_key))
3609 /* Must skip Run-In Sequence and search for MXF header partition pack key SMPTE 377M 5.5 */
3610 end -= sizeof(mxf_header_partition_pack_key);
3612 for (; bufp < end;) {
3613 if (!((bufp[13] - 1) & 0xF2)){
3614 if (AV_RN32(bufp ) == AV_RN32(mxf_header_partition_pack_key ) &&
3615 AV_RN32(bufp+ 4) == AV_RN32(mxf_header_partition_pack_key+ 4) &&
3616 AV_RN32(bufp+ 8) == AV_RN32(mxf_header_partition_pack_key+ 8) &&
3617 AV_RN16(bufp+12) == AV_RN16(mxf_header_partition_pack_key+12))
3618 return AVPROBE_SCORE_MAX;
3627 /* rudimentary byte seek */
3628 /* XXX: use MXF Index */
3629 static int mxf_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
3631 AVStream *st = s->streams[stream_index];
3633 MXFContext* mxf = s->priv_data;
3637 MXFTrack *source_track = st->priv_data;
3642 /* if audio then truncate sample_time to EditRate */
3643 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
3644 sample_time = av_rescale_q(sample_time, st->time_base,
3645 av_inv_q(source_track->edit_rate));
3647 if (mxf->nb_index_tables <= 0) {
3649 return AVERROR_INVALIDDATA;
3650 if (sample_time < 0)
3652 seconds = av_rescale(sample_time, st->time_base.num, st->time_base.den);
3654 seekpos = avio_seek(s->pb, (s->bit_rate * seconds) >> 3, SEEK_SET);
3658 ff_update_cur_dts(s, st, sample_time);
3659 mxf->current_klv_data = (KLVPacket){{0}};
3661 MXFPartition *partition;
3663 t = &mxf->index_tables[0];
3664 if (t->index_sid != source_track->index_sid) {
3665 /* If the first index table does not belong to the stream, then find a stream which does belong to the index table */
3666 for (i = 0; i < s->nb_streams; i++) {
3667 MXFTrack *new_source_track = s->streams[i]->priv_data;
3668 if (new_source_track && new_source_track->index_sid == t->index_sid) {
3669 sample_time = av_rescale_q(sample_time, new_source_track->edit_rate, source_track->edit_rate);
3670 source_track = new_source_track;
3675 if (i == s->nb_streams)
3676 return AVERROR_INVALIDDATA;
3679 /* clamp above zero, else ff_index_search_timestamp() returns negative
3680 * this also means we allow seeking before the start */
3681 sample_time = FFMAX(sample_time, 0);
3683 if (t->fake_index) {
3684 /* The first frames may not be keyframes in presentation order, so
3685 * we have to advance the target to be able to find the first
3686 * keyframe backwards... */
3687 if (!(flags & AVSEEK_FLAG_ANY) &&
3688 (flags & AVSEEK_FLAG_BACKWARD) &&
3689 t->ptses[0] != AV_NOPTS_VALUE &&
3690 sample_time < t->ptses[0] &&
3691 (t->fake_index[t->ptses[0]].flags & AVINDEX_KEYFRAME))
3692 sample_time = t->ptses[0];
3694 /* behave as if we have a proper index */
3695 if ((sample_time = ff_index_search_timestamp(t->fake_index, t->nb_ptses, sample_time, flags)) < 0)
3697 /* get the stored order index from the display order index */
3698 sample_time += t->offsets[sample_time];
3700 /* no IndexEntryArray (one or more CBR segments)
3701 * make sure we don't seek past the end */
3702 sample_time = FFMIN(sample_time, source_track->original_duration - 1);
3705 if (source_track->wrapping == UnknownWrapped)
3706 av_log(mxf->fc, AV_LOG_WARNING, "attempted seek in an UnknownWrapped essence\n");
3708 if ((ret = mxf_edit_unit_absolute_offset(mxf, t, sample_time, source_track->edit_rate, &sample_time, &seekpos, &partition, 1)) < 0)
3711 ff_update_cur_dts(s, st, sample_time);
3712 if (source_track->wrapping == ClipWrapped) {
3713 KLVPacket klv = partition->first_essence_klv;
3714 if (seekpos < klv.next_klv - klv.length || seekpos >= klv.next_klv) {
3715 av_log(mxf->fc, AV_LOG_ERROR, "attempted seek out of clip wrapped KLV\n");
3716 return AVERROR_INVALIDDATA;
3718 mxf->current_klv_data = klv;
3720 mxf->current_klv_data = (KLVPacket){{0}};
3722 avio_seek(s->pb, seekpos, SEEK_SET);
3725 // Update all tracks sample count
3726 for (i = 0; i < s->nb_streams; i++) {
3727 AVStream *cur_st = s->streams[i];
3728 MXFTrack *cur_track = cur_st->priv_data;
3730 int64_t track_edit_unit = sample_time;
3732 mxf_get_next_track_edit_unit(mxf, cur_track, seekpos, &track_edit_unit);
3733 cur_track->sample_count = mxf_compute_sample_count(mxf, cur_st, track_edit_unit);
3739 static const AVOption options[] = {
3740 { "eia608_extract", "extract eia 608 captions from s436m track",
3741 offsetof(MXFContext, eia608_extract), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1,
3742 AV_OPT_FLAG_DECODING_PARAM },
3746 static const AVClass demuxer_class = {
3747 .class_name = "mxf",
3748 .item_name = av_default_item_name,
3750 .version = LIBAVUTIL_VERSION_INT,
3751 .category = AV_CLASS_CATEGORY_DEMUXER,
3754 AVInputFormat ff_mxf_demuxer = {
3756 .long_name = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format)"),
3757 .flags = AVFMT_SEEK_TO_PTS,
3758 .priv_data_size = sizeof(MXFContext),
3759 .read_probe = mxf_probe,
3760 .read_header = mxf_read_header,
3761 .read_packet = mxf_read_packet,
3762 .read_close = mxf_read_close,
3763 .read_seek = mxf_read_seek,
3764 .priv_class = &demuxer_class,