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 MXFTimecodeComponent {
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);
370 static int64_t klv_decode_ber_length(AVIOContext *pb)
372 uint64_t size = avio_r8(pb);
373 if (size & 0x80) { /* long form */
374 int bytes_num = size & 0x7f;
375 /* SMPTE 379M 5.3.4 guarantee that bytes_num must not exceed 8 bytes */
377 return AVERROR_INVALIDDATA;
380 size = size << 8 | avio_r8(pb);
382 if (size > INT64_MAX)
383 return AVERROR_INVALIDDATA;
387 static int mxf_read_sync(AVIOContext *pb, const uint8_t *key, unsigned size)
390 for (i = 0; i < size && !avio_feof(pb); i++) {
394 else if (b != key[i])
400 static int klv_read_packet(KLVPacket *klv, AVIOContext *pb)
403 if (!mxf_read_sync(pb, mxf_klv_key, 4))
404 return AVERROR_INVALIDDATA;
405 klv->offset = avio_tell(pb) - 4;
406 memcpy(klv->key, mxf_klv_key, 4);
407 avio_read(pb, klv->key + 4, 12);
408 length = klv_decode_ber_length(pb);
411 klv->length = length;
413 if (pos > INT64_MAX - length)
414 return AVERROR_INVALIDDATA;
415 klv->next_klv = pos + length;
419 static int mxf_get_stream_index(AVFormatContext *s, KLVPacket *klv, int body_sid)
423 for (i = 0; i < s->nb_streams; i++) {
424 MXFTrack *track = s->streams[i]->priv_data;
426 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)))
429 /* return 0 if only one stream, for OP Atom files with 0 as track number */
430 return s->nb_streams == 1 && s->streams[0]->priv_data ? 0 : -1;
433 static int find_body_sid_by_absolute_offset(MXFContext *mxf, int64_t offset)
435 // we look for partition where the offset is placed
440 b = mxf->partitions_count;
444 pack_ofs = mxf->partitions[m].pack_ofs;
445 if (pack_ofs <= offset)
453 return mxf->partitions[a].body_sid;
456 static int mxf_get_eia608_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt, int64_t length)
458 int count = avio_rb16(s->pb);
459 int cdp_identifier, cdp_length, cdp_footer_id, ccdata_id, cc_count;
460 int line_num, sample_coding, sample_count;
461 int did, sdid, data_length;
465 av_log(s, AV_LOG_WARNING, "unsupported multiple ANC packets (%d) per KLV packet\n", count);
467 for (i = 0; i < count; i++) {
469 av_log(s, AV_LOG_ERROR, "error reading s436m packet %"PRId64"\n", length);
470 return AVERROR_INVALIDDATA;
472 line_num = avio_rb16(s->pb);
473 avio_r8(s->pb); // wrapping type
474 sample_coding = avio_r8(s->pb);
475 sample_count = avio_rb16(s->pb);
476 length -= 6 + 8 + sample_count;
477 if (line_num != 9 && line_num != 11)
479 if (sample_coding == 7 || sample_coding == 8 || sample_coding == 9) {
480 av_log(s, AV_LOG_WARNING, "unsupported s436m 10 bit sample coding\n");
484 return AVERROR_INVALIDDATA;
486 avio_rb32(s->pb); // array count
487 avio_rb32(s->pb); // array elem size
488 did = avio_r8(s->pb);
489 sdid = avio_r8(s->pb);
490 data_length = avio_r8(s->pb);
491 if (did != 0x61 || sdid != 1) {
492 av_log(s, AV_LOG_WARNING, "unsupported did or sdid: %x %x\n", did, sdid);
495 cdp_identifier = avio_rb16(s->pb); // cdp id
496 if (cdp_identifier != 0x9669) {
497 av_log(s, AV_LOG_ERROR, "wrong cdp identifier %x\n", cdp_identifier);
498 return AVERROR_INVALIDDATA;
500 cdp_length = avio_r8(s->pb);
501 avio_r8(s->pb); // cdp_frame_rate
502 avio_r8(s->pb); // cdp_flags
503 avio_rb16(s->pb); // cdp_hdr_sequence_cntr
504 ccdata_id = avio_r8(s->pb); // ccdata_id
505 if (ccdata_id != 0x72) {
506 av_log(s, AV_LOG_ERROR, "wrong cdp data section %x\n", ccdata_id);
507 return AVERROR_INVALIDDATA;
509 cc_count = avio_r8(s->pb) & 0x1f;
510 ret = av_get_packet(s->pb, pkt, cc_count * 3);
513 if (cdp_length - 9 - 4 < cc_count * 3) {
514 av_log(s, AV_LOG_ERROR, "wrong cdp size %d cc count %d\n", cdp_length, cc_count);
515 return AVERROR_INVALIDDATA;
517 avio_skip(s->pb, data_length - 9 - 4 - cc_count * 3);
518 cdp_footer_id = avio_r8(s->pb);
519 if (cdp_footer_id != 0x74) {
520 av_log(s, AV_LOG_ERROR, "wrong cdp footer section %x\n", cdp_footer_id);
521 return AVERROR_INVALIDDATA;
523 avio_rb16(s->pb); // cdp_ftr_sequence_cntr
524 avio_r8(s->pb); // packet_checksum
531 /* XXX: use AVBitStreamFilter */
532 static int mxf_get_d10_aes3_packet(AVIOContext *pb, AVStream *st, AVPacket *pkt, int64_t length)
534 const uint8_t *buf_ptr, *end_ptr;
538 if (length > 61444) /* worst case PAL 1920 samples 8 channels */
539 return AVERROR_INVALIDDATA;
540 length = av_get_packet(pb, pkt, length);
543 data_ptr = pkt->data;
544 end_ptr = pkt->data + length;
545 buf_ptr = pkt->data + 4; /* skip SMPTE 331M header */
546 for (; end_ptr - buf_ptr >= st->codecpar->channels * 4; ) {
547 for (i = 0; i < st->codecpar->channels; i++) {
548 uint32_t sample = bytestream_get_le32(&buf_ptr);
549 if (st->codecpar->bits_per_coded_sample == 24)
550 bytestream_put_le24(&data_ptr, (sample >> 4) & 0xffffff);
552 bytestream_put_le16(&data_ptr, (sample >> 12) & 0xffff);
554 buf_ptr += 32 - st->codecpar->channels*4; // always 8 channels stored SMPTE 331M
556 av_shrink_packet(pkt, data_ptr - pkt->data);
560 static int mxf_decrypt_triplet(AVFormatContext *s, AVPacket *pkt, KLVPacket *klv)
562 static const uint8_t checkv[16] = {0x43, 0x48, 0x55, 0x4b, 0x43, 0x48, 0x55, 0x4b, 0x43, 0x48, 0x55, 0x4b, 0x43, 0x48, 0x55, 0x4b};
563 MXFContext *mxf = s->priv_data;
564 AVIOContext *pb = s->pb;
565 int64_t end = avio_tell(pb) + klv->length;
568 uint64_t plaintext_size;
574 if (!mxf->aesc && s->key && s->keylen == 16) {
575 mxf->aesc = av_aes_alloc();
577 return AVERROR(ENOMEM);
578 av_aes_init(mxf->aesc, s->key, 128, 1);
581 size = klv_decode_ber_length(pb);
586 klv_decode_ber_length(pb);
587 plaintext_size = avio_rb64(pb);
589 klv_decode_ber_length(pb);
590 avio_read(pb, klv->key, 16);
591 if (!IS_KLV_KEY(klv, mxf_essence_element_key))
592 return AVERROR_INVALIDDATA;
594 body_sid = find_body_sid_by_absolute_offset(mxf, klv->offset);
595 index = mxf_get_stream_index(s, klv, body_sid);
597 return AVERROR_INVALIDDATA;
599 klv_decode_ber_length(pb);
600 orig_size = avio_rb64(pb);
601 if (orig_size < plaintext_size)
602 return AVERROR_INVALIDDATA;
604 size = klv_decode_ber_length(pb);
605 if (size < 32 || size - 32 < orig_size)
606 return AVERROR_INVALIDDATA;
607 avio_read(pb, ivec, 16);
608 avio_read(pb, tmpbuf, 16);
610 av_aes_crypt(mxf->aesc, tmpbuf, tmpbuf, 1, ivec, 1);
611 if (memcmp(tmpbuf, checkv, 16))
612 av_log(s, AV_LOG_ERROR, "probably incorrect decryption key\n");
614 size = av_get_packet(pb, pkt, size);
617 else if (size < plaintext_size)
618 return AVERROR_INVALIDDATA;
619 size -= plaintext_size;
621 av_aes_crypt(mxf->aesc, &pkt->data[plaintext_size],
622 &pkt->data[plaintext_size], size >> 4, ivec, 1);
623 av_shrink_packet(pkt, orig_size);
624 pkt->stream_index = index;
625 avio_skip(pb, end - avio_tell(pb));
629 static int mxf_read_primer_pack(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
631 MXFContext *mxf = arg;
632 int item_num = avio_rb32(pb);
633 int item_len = avio_rb32(pb);
635 if (item_len != 18) {
636 avpriv_request_sample(pb, "Primer pack item length %d", item_len);
637 return AVERROR_PATCHWELCOME;
639 if (item_num > 65536 || item_num < 0) {
640 av_log(mxf->fc, AV_LOG_ERROR, "item_num %d is too large\n", item_num);
641 return AVERROR_INVALIDDATA;
644 av_log(mxf->fc, AV_LOG_VERBOSE, "Multiple primer packs\n");
645 av_free(mxf->local_tags);
646 mxf->local_tags_count = 0;
647 mxf->local_tags = av_calloc(item_num, item_len);
648 if (!mxf->local_tags)
649 return AVERROR(ENOMEM);
650 mxf->local_tags_count = item_num;
651 avio_read(pb, mxf->local_tags, item_num*item_len);
655 static int mxf_read_partition_pack(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
657 MXFContext *mxf = arg;
658 AVFormatContext *s = mxf->fc;
659 MXFPartition *partition, *tmp_part;
661 uint64_t footer_partition;
662 uint32_t nb_essence_containers;
664 if (mxf->partitions_count >= INT_MAX / 2)
665 return AVERROR_INVALIDDATA;
667 tmp_part = av_realloc_array(mxf->partitions, mxf->partitions_count + 1, sizeof(*mxf->partitions));
669 return AVERROR(ENOMEM);
670 mxf->partitions = tmp_part;
672 if (mxf->parsing_backward) {
673 /* insert the new partition pack in the middle
674 * this makes the entries in mxf->partitions sorted by offset */
675 memmove(&mxf->partitions[mxf->last_forward_partition+1],
676 &mxf->partitions[mxf->last_forward_partition],
677 (mxf->partitions_count - mxf->last_forward_partition)*sizeof(*mxf->partitions));
678 partition = mxf->current_partition = &mxf->partitions[mxf->last_forward_partition];
680 mxf->last_forward_partition++;
681 partition = mxf->current_partition = &mxf->partitions[mxf->partitions_count];
684 memset(partition, 0, sizeof(*partition));
685 mxf->partitions_count++;
686 partition->pack_length = avio_tell(pb) - klv_offset + size;
687 partition->pack_ofs = klv_offset;
691 partition->type = Header;
694 partition->type = BodyPartition;
697 partition->type = Footer;
700 av_log(mxf->fc, AV_LOG_ERROR, "unknown partition type %i\n", uid[13]);
701 return AVERROR_INVALIDDATA;
704 /* consider both footers to be closed (there is only Footer and CompleteFooter) */
705 partition->closed = partition->type == Footer || !(uid[14] & 1);
706 partition->complete = uid[14] > 2;
708 partition->kag_size = avio_rb32(pb);
709 partition->this_partition = avio_rb64(pb);
710 partition->previous_partition = avio_rb64(pb);
711 footer_partition = avio_rb64(pb);
712 partition->header_byte_count = avio_rb64(pb);
713 partition->index_byte_count = avio_rb64(pb);
714 partition->index_sid = avio_rb32(pb);
715 partition->body_offset = avio_rb64(pb);
716 partition->body_sid = avio_rb32(pb);
717 if (avio_read(pb, op, sizeof(UID)) != sizeof(UID)) {
718 av_log(mxf->fc, AV_LOG_ERROR, "Failed reading UID\n");
719 return AVERROR_INVALIDDATA;
721 nb_essence_containers = avio_rb32(pb);
723 if (partition->type == Header) {
725 snprintf(str, sizeof(str), "%08x.%08x.%08x.%08x", AV_RB32(&op[0]), AV_RB32(&op[4]), AV_RB32(&op[8]), AV_RB32(&op[12]));
726 av_dict_set(&s->metadata, "operational_pattern_ul", str, 0);
729 if (partition->this_partition &&
730 partition->previous_partition == partition->this_partition) {
731 av_log(mxf->fc, AV_LOG_ERROR,
732 "PreviousPartition equal to ThisPartition %"PRIx64"\n",
733 partition->previous_partition);
734 /* override with the actual previous partition offset */
735 if (!mxf->parsing_backward && mxf->last_forward_partition > 1) {
737 mxf->partitions + mxf->last_forward_partition - 2;
738 partition->previous_partition = prev->this_partition;
740 /* if no previous body partition are found point to the header
742 if (partition->previous_partition == partition->this_partition)
743 partition->previous_partition = 0;
744 av_log(mxf->fc, AV_LOG_ERROR,
745 "Overriding PreviousPartition with %"PRIx64"\n",
746 partition->previous_partition);
749 /* some files don't have FooterPartition set in every partition */
750 if (footer_partition) {
751 if (mxf->footer_partition && mxf->footer_partition != footer_partition) {
752 av_log(mxf->fc, AV_LOG_ERROR,
753 "inconsistent FooterPartition value: %"PRIu64" != %"PRIu64"\n",
754 mxf->footer_partition, footer_partition);
756 mxf->footer_partition = footer_partition;
760 av_log(mxf->fc, AV_LOG_TRACE,
761 "PartitionPack: ThisPartition = 0x%"PRIX64
762 ", PreviousPartition = 0x%"PRIX64", "
763 "FooterPartition = 0x%"PRIX64", IndexSID = %i, BodySID = %i\n",
764 partition->this_partition,
765 partition->previous_partition, footer_partition,
766 partition->index_sid, partition->body_sid);
768 /* sanity check PreviousPartition if set */
769 //NOTE: this isn't actually enough, see mxf_seek_to_previous_partition()
770 if (partition->previous_partition &&
771 mxf->run_in + partition->previous_partition >= klv_offset) {
772 av_log(mxf->fc, AV_LOG_ERROR,
773 "PreviousPartition points to this partition or forward\n");
774 return AVERROR_INVALIDDATA;
777 if (op[12] == 1 && op[13] == 1) mxf->op = OP1a;
778 else if (op[12] == 1 && op[13] == 2) mxf->op = OP1b;
779 else if (op[12] == 1 && op[13] == 3) mxf->op = OP1c;
780 else if (op[12] == 2 && op[13] == 1) mxf->op = OP2a;
781 else if (op[12] == 2 && op[13] == 2) mxf->op = OP2b;
782 else if (op[12] == 2 && op[13] == 3) mxf->op = OP2c;
783 else if (op[12] == 3 && op[13] == 1) mxf->op = OP3a;
784 else if (op[12] == 3 && op[13] == 2) mxf->op = OP3b;
785 else if (op[12] == 3 && op[13] == 3) mxf->op = OP3c;
786 else if (op[12] == 64&& op[13] == 1) mxf->op = OPSONYOpt;
787 else if (op[12] == 0x10) {
788 /* SMPTE 390m: "There shall be exactly one essence container"
789 * The following block deals with files that violate this, namely:
790 * 2011_DCPTEST_24FPS.V.mxf - two ECs, OP1a
791 * abcdefghiv016f56415e.mxf - zero ECs, OPAtom, output by Avid AirSpeed */
792 if (nb_essence_containers != 1) {
793 MXFOP op = nb_essence_containers ? OP1a : OPAtom;
797 av_log(mxf->fc, AV_LOG_WARNING,
798 "\"OPAtom\" with %"PRIu32" ECs - assuming %s\n",
799 nb_essence_containers,
800 op == OP1a ? "OP1a" : "OPAtom");
806 av_log(mxf->fc, AV_LOG_ERROR, "unknown operational pattern: %02xh %02xh - guessing OP1a\n", op[12], op[13]);
810 if (partition->kag_size <= 0 || partition->kag_size > (1 << 20)) {
811 av_log(mxf->fc, AV_LOG_WARNING, "invalid KAGSize %"PRId32" - guessing ",
812 partition->kag_size);
814 if (mxf->op == OPSONYOpt)
815 partition->kag_size = 512;
817 partition->kag_size = 1;
819 av_log(mxf->fc, AV_LOG_WARNING, "%"PRId32"\n", partition->kag_size);
825 static int mxf_add_metadata_set(MXFContext *mxf, MXFMetadataSet **metadata_set)
827 MXFMetadataSet **tmp;
829 tmp = av_realloc_array(mxf->metadata_sets, mxf->metadata_sets_count + 1, sizeof(*mxf->metadata_sets));
831 mxf_free_metadataset(metadata_set, 1);
832 return AVERROR(ENOMEM);
834 mxf->metadata_sets = tmp;
835 mxf->metadata_sets[mxf->metadata_sets_count] = *metadata_set;
836 mxf->metadata_sets_count++;
840 static int mxf_read_cryptographic_context(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
842 MXFCryptoContext *cryptocontext = arg;
844 return AVERROR_INVALIDDATA;
845 if (IS_KLV_KEY(uid, mxf_crypto_source_container_ul))
846 avio_read(pb, cryptocontext->source_container_ul, 16);
850 static int mxf_read_strong_ref_array(AVIOContext *pb, UID **refs, int *count)
852 *count = avio_rb32(pb);
854 *refs = av_calloc(*count, sizeof(UID));
857 return AVERROR(ENOMEM);
859 avio_skip(pb, 4); /* useless size of objects, always 16 according to specs */
860 avio_read(pb, (uint8_t *)*refs, *count * sizeof(UID));
864 static inline int mxf_read_utf16_string(AVIOContext *pb, int size, char** str, int be)
869 if (size < 0 || size > INT_MAX/2)
870 return AVERROR(EINVAL);
872 buf_size = size + size / 2 + 1;
874 *str = av_malloc(buf_size);
876 return AVERROR(ENOMEM);
879 ret = avio_get_str16be(pb, size, *str, buf_size);
881 ret = avio_get_str16le(pb, size, *str, buf_size);
891 #define READ_STR16(type, big_endian) \
892 static int mxf_read_utf16 ## type ##_string(AVIOContext *pb, int size, char** str) \
894 return mxf_read_utf16_string(pb, size, str, big_endian); \
900 static int mxf_read_content_storage(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
902 MXFContext *mxf = arg;
905 if (mxf->packages_refs)
906 av_log(mxf->fc, AV_LOG_VERBOSE, "Multiple packages_refs\n");
907 return mxf_read_strong_ref_array(pb, &mxf->packages_refs, &mxf->packages_count);
909 return mxf_read_strong_ref_array(pb, &mxf->essence_container_data_refs, &mxf->essence_container_data_count);
914 static int mxf_read_source_clip(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
916 MXFStructuralComponent *source_clip = arg;
919 source_clip->duration = avio_rb64(pb);
922 source_clip->start_position = avio_rb64(pb);
925 /* UMID, only get last 16 bytes */
926 avio_read(pb, source_clip->source_package_ul, 16);
927 avio_read(pb, source_clip->source_package_uid, 16);
930 source_clip->source_track_id = avio_rb32(pb);
936 static int mxf_read_timecode_component(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
938 MXFTimecodeComponent *mxf_timecode = arg;
941 mxf_timecode->start_frame = avio_rb64(pb);
944 mxf_timecode->rate = (AVRational){avio_rb16(pb), 1};
947 mxf_timecode->drop_frame = avio_r8(pb);
953 static int mxf_read_pulldown_component(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
955 MXFPulldownComponent *mxf_pulldown = arg;
958 avio_read(pb, mxf_pulldown->input_segment_ref, 16);
964 static int mxf_read_track(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
966 MXFTrack *track = arg;
969 track->track_id = avio_rb32(pb);
972 avio_read(pb, track->track_number, 4);
975 mxf_read_utf16be_string(pb, size, &track->name);
978 track->edit_rate.num = avio_rb32(pb);
979 track->edit_rate.den = avio_rb32(pb);
982 avio_read(pb, track->sequence_ref, 16);
988 static int mxf_read_sequence(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
990 MXFSequence *sequence = arg;
993 sequence->duration = avio_rb64(pb);
996 avio_read(pb, sequence->data_definition_ul, 16);
999 sequence->origin = avio_r8(pb);
1002 return mxf_read_strong_ref_array(pb, &sequence->structural_components_refs,
1003 &sequence->structural_components_count);
1008 static int mxf_read_essence_group(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
1010 MXFEssenceGroup *essence_group = arg;
1013 essence_group->duration = avio_rb64(pb);
1016 return mxf_read_strong_ref_array(pb, &essence_group->structural_components_refs,
1017 &essence_group->structural_components_count);
1022 static int mxf_read_package(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
1024 MXFPackage *package = arg;
1027 return mxf_read_strong_ref_array(pb, &package->tracks_refs,
1028 &package->tracks_count);
1031 avio_read(pb, package->package_ul, 16);
1032 avio_read(pb, package->package_uid, 16);
1035 avio_read(pb, package->descriptor_ref, 16);
1038 return mxf_read_utf16be_string(pb, size, &package->name);
1040 return mxf_read_strong_ref_array(pb, &package->comment_refs,
1041 &package->comment_count);
1046 static int mxf_read_essence_container_data(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
1048 MXFEssenceContainerData *essence_data = arg;
1051 /* linked package umid UMID */
1052 avio_read(pb, essence_data->package_ul, 16);
1053 avio_read(pb, essence_data->package_uid, 16);
1056 essence_data->index_sid = avio_rb32(pb);
1059 essence_data->body_sid = avio_rb32(pb);
1065 static int mxf_read_index_entry_array(AVIOContext *pb, MXFIndexTableSegment *segment)
1069 segment->nb_index_entries = avio_rb32(pb);
1071 length = avio_rb32(pb);
1072 if(segment->nb_index_entries && length < 11)
1073 return AVERROR_INVALIDDATA;
1075 if (!(segment->temporal_offset_entries=av_calloc(segment->nb_index_entries, sizeof(*segment->temporal_offset_entries))) ||
1076 !(segment->flag_entries = av_calloc(segment->nb_index_entries, sizeof(*segment->flag_entries))) ||
1077 !(segment->stream_offset_entries = av_calloc(segment->nb_index_entries, sizeof(*segment->stream_offset_entries)))) {
1078 av_freep(&segment->temporal_offset_entries);
1079 av_freep(&segment->flag_entries);
1080 return AVERROR(ENOMEM);
1083 for (i = 0; i < segment->nb_index_entries; i++) {
1085 return AVERROR_INVALIDDATA;
1086 segment->temporal_offset_entries[i] = avio_r8(pb);
1087 avio_r8(pb); /* KeyFrameOffset */
1088 segment->flag_entries[i] = avio_r8(pb);
1089 segment->stream_offset_entries[i] = avio_rb64(pb);
1090 avio_skip(pb, length - 11);
1095 static int mxf_read_index_table_segment(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
1097 MXFIndexTableSegment *segment = arg;
1100 segment->edit_unit_byte_count = avio_rb32(pb);
1101 av_log(NULL, AV_LOG_TRACE, "EditUnitByteCount %d\n", segment->edit_unit_byte_count);
1104 segment->index_sid = avio_rb32(pb);
1105 av_log(NULL, AV_LOG_TRACE, "IndexSID %d\n", segment->index_sid);
1108 segment->body_sid = avio_rb32(pb);
1109 av_log(NULL, AV_LOG_TRACE, "BodySID %d\n", segment->body_sid);
1112 av_log(NULL, AV_LOG_TRACE, "IndexEntryArray found\n");
1113 return mxf_read_index_entry_array(pb, segment);
1115 segment->index_edit_rate.num = avio_rb32(pb);
1116 segment->index_edit_rate.den = avio_rb32(pb);
1117 av_log(NULL, AV_LOG_TRACE, "IndexEditRate %d/%d\n", segment->index_edit_rate.num,
1118 segment->index_edit_rate.den);
1121 segment->index_start_position = avio_rb64(pb);
1122 av_log(NULL, AV_LOG_TRACE, "IndexStartPosition %"PRId64"\n", segment->index_start_position);
1125 segment->index_duration = avio_rb64(pb);
1126 av_log(NULL, AV_LOG_TRACE, "IndexDuration %"PRId64"\n", segment->index_duration);
1132 static void mxf_read_pixel_layout(AVIOContext *pb, MXFDescriptor *descriptor)
1134 int code, value, ofs = 0;
1135 char layout[16] = {0}; /* not for printing, may end up not terminated on purpose */
1139 value = avio_r8(pb);
1140 av_log(NULL, AV_LOG_TRACE, "pixel layout: code %#x\n", code);
1143 layout[ofs++] = code;
1144 layout[ofs++] = value;
1146 break; /* don't read byte by byte on sneaky files filled with lots of non-zeroes */
1147 } while (code != 0); /* SMPTE 377M E.2.46 */
1149 ff_mxf_decode_pixel_layout(layout, &descriptor->pix_fmt);
1152 static int mxf_read_generic_descriptor(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
1154 MXFDescriptor *descriptor = arg;
1155 int entry_count, entry_size;
1159 return mxf_read_strong_ref_array(pb, &descriptor->sub_descriptors_refs,
1160 &descriptor->sub_descriptors_count);
1161 case 0x3002: /* ContainerDuration */
1162 descriptor->duration = avio_rb64(pb);
1165 avio_read(pb, descriptor->essence_container_ul, 16);
1168 avio_read(pb, descriptor->codec_ul, 16);
1171 descriptor->linked_track_id = avio_rb32(pb);
1173 case 0x3201: /* PictureEssenceCoding */
1174 avio_read(pb, descriptor->essence_codec_ul, 16);
1177 descriptor->width = avio_rb32(pb);
1180 descriptor->height = avio_rb32(pb);
1183 descriptor->frame_layout = avio_r8(pb);
1186 entry_count = avio_rb32(pb);
1187 entry_size = avio_rb32(pb);
1188 if (entry_size == 4) {
1189 if (entry_count > 0)
1190 descriptor->video_line_map[0] = avio_rb32(pb);
1192 descriptor->video_line_map[0] = 0;
1193 if (entry_count > 1)
1194 descriptor->video_line_map[1] = avio_rb32(pb);
1196 descriptor->video_line_map[1] = 0;
1198 av_log(NULL, AV_LOG_WARNING, "VideoLineMap element size %d currently not supported\n", entry_size);
1201 descriptor->aspect_ratio.num = avio_rb32(pb);
1202 descriptor->aspect_ratio.den = avio_rb32(pb);
1205 descriptor->field_dominance = avio_r8(pb);
1208 descriptor->component_depth = avio_rb32(pb);
1211 descriptor->horiz_subsampling = avio_rb32(pb);
1214 descriptor->vert_subsampling = avio_rb32(pb);
1217 descriptor->sample_rate.num = avio_rb32(pb);
1218 descriptor->sample_rate.den = avio_rb32(pb);
1220 case 0x3D06: /* SoundEssenceCompression */
1221 avio_read(pb, descriptor->essence_codec_ul, 16);
1224 descriptor->channels = avio_rb32(pb);
1227 descriptor->bits_per_sample = avio_rb32(pb);
1230 mxf_read_pixel_layout(pb, descriptor);
1233 /* Private uid used by SONY C0023S01.mxf */
1234 if (IS_KLV_KEY(uid, mxf_sony_mpeg4_extradata)) {
1235 if (descriptor->extradata)
1236 av_log(NULL, AV_LOG_WARNING, "Duplicate sony_mpeg4_extradata\n");
1237 av_free(descriptor->extradata);
1238 descriptor->extradata_size = 0;
1239 descriptor->extradata = av_malloc(size);
1240 if (!descriptor->extradata)
1241 return AVERROR(ENOMEM);
1242 descriptor->extradata_size = size;
1243 avio_read(pb, descriptor->extradata, size);
1245 if (IS_KLV_KEY(uid, mxf_jp2k_rsiz)) {
1246 uint32_t rsiz = avio_rb16(pb);
1247 if (rsiz == FF_PROFILE_JPEG2000_DCINEMA_2K ||
1248 rsiz == FF_PROFILE_JPEG2000_DCINEMA_4K)
1249 descriptor->pix_fmt = AV_PIX_FMT_XYZ12;
1256 static int mxf_read_indirect_value(void *arg, AVIOContext *pb, int size)
1258 MXFTaggedValue *tagged_value = arg;
1264 avio_read(pb, key, 17);
1265 /* TODO: handle other types of of indirect values */
1266 if (memcmp(key, mxf_indirect_value_utf16le, 17) == 0) {
1267 return mxf_read_utf16le_string(pb, size - 17, &tagged_value->value);
1268 } else if (memcmp(key, mxf_indirect_value_utf16be, 17) == 0) {
1269 return mxf_read_utf16be_string(pb, size - 17, &tagged_value->value);
1274 static int mxf_read_tagged_value(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
1276 MXFTaggedValue *tagged_value = arg;
1279 return mxf_read_utf16be_string(pb, size, &tagged_value->name);
1281 return mxf_read_indirect_value(tagged_value, pb, size);
1287 * Match an uid independently of the version byte and up to len common bytes
1290 static int mxf_match_uid(const UID key, const UID uid, int len)
1293 for (i = 0; i < len; i++) {
1294 if (i != 7 && key[i] != uid[i])
1300 static const MXFCodecUL *mxf_get_codec_ul(const MXFCodecUL *uls, UID *uid)
1302 while (uls->uid[0]) {
1303 if(mxf_match_uid(uls->uid, *uid, uls->matching_len))
1310 static void *mxf_resolve_strong_ref(MXFContext *mxf, UID *strong_ref, enum MXFMetadataSetType type)
1316 for (i = 0; i < mxf->metadata_sets_count; i++) {
1317 if (!memcmp(*strong_ref, mxf->metadata_sets[i]->uid, 16) &&
1318 (type == AnyType || mxf->metadata_sets[i]->type == type)) {
1319 return mxf->metadata_sets[i];
1325 static const MXFCodecUL mxf_picture_essence_container_uls[] = {
1326 // video essence container uls
1327 { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x0d,0x01,0x03,0x01,0x02,0x0c,0x01,0x00 }, 14, AV_CODEC_ID_JPEG2000, NULL, 14 },
1328 { { 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 */
1329 { { 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 */
1330 { { 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 */
1331 { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x02,0x0d,0x01,0x03,0x01,0x02,0x14,0x01,0x00 }, 14, AV_CODEC_ID_TIFF, NULL, 14 }, /* TIFF */
1332 { { 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 */
1333 { { 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 */
1334 { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x02,0x0d,0x01,0x03,0x01,0x02,0x1c,0x01,0x00 }, 14, AV_CODEC_ID_PRORES, NULL, 14 }, /* ProRes */
1335 { { 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 */
1336 { { 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 */
1337 { { 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 */
1338 { { 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 */
1339 { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0a,0x0e,0x0f,0x03,0x01,0x02,0x20,0x01,0x01 }, 15, AV_CODEC_ID_HQ_HQA },
1340 { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0a,0x0e,0x0f,0x03,0x01,0x02,0x20,0x02,0x01 }, 15, AV_CODEC_ID_HQX },
1341 { { 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 */
1342 { { 0x06,0x0e,0x2b,0x34,0x01,0x01,0x01,0xff,0x4b,0x46,0x41,0x41,0x00,0x0d,0x4d,0x4f }, 14, AV_CODEC_ID_RAWVIDEO }, /* Legacy ?? Uncompressed Picture */
1343 { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, AV_CODEC_ID_NONE },
1346 /* EC ULs for intra-only formats */
1347 static const MXFCodecUL mxf_intra_only_essence_container_uls[] = {
1348 { { 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 */
1349 { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, AV_CODEC_ID_NONE },
1352 /* intra-only PictureEssenceCoding ULs, where no corresponding EC UL exists */
1353 static const MXFCodecUL mxf_intra_only_picture_essence_coding_uls[] = {
1354 { { 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 */
1355 { { 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 */
1356 { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, AV_CODEC_ID_NONE },
1359 /* actual coded width for AVC-Intra to allow selecting correct SPS/PPS */
1360 static const MXFCodecUL mxf_intra_only_picture_coded_width[] = {
1361 { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x01 }, 16, 1440 },
1362 { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x02 }, 16, 1440 },
1363 { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x03 }, 16, 1440 },
1364 { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x04 }, 16, 1440 },
1365 { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, 0 },
1368 static const MXFCodecUL mxf_sound_essence_container_uls[] = {
1369 // sound essence container uls
1370 { { 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 */
1371 { { 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 */
1372 { { 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 */
1373 { { 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 */
1374 { { 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) */
1375 { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, AV_CODEC_ID_NONE },
1378 static const MXFCodecUL mxf_data_essence_container_uls[] = {
1379 { { 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 },
1380 { { 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 },
1381 { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x09,0x0d,0x01,0x03,0x01,0x02,0x13,0x01,0x01 }, 16, AV_CODEC_ID_TTML },
1382 { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, AV_CODEC_ID_NONE },
1385 static MXFWrappingScheme mxf_get_wrapping_kind(UID *essence_container_ul)
1388 const MXFCodecUL *codec_ul;
1390 codec_ul = mxf_get_codec_ul(mxf_picture_essence_container_uls, essence_container_ul);
1391 if (!codec_ul->uid[0])
1392 codec_ul = mxf_get_codec_ul(mxf_sound_essence_container_uls, essence_container_ul);
1393 if (!codec_ul->uid[0])
1394 codec_ul = mxf_get_codec_ul(mxf_data_essence_container_uls, essence_container_ul);
1395 if (!codec_ul->uid[0] || !codec_ul->wrapping_indicator_pos)
1396 return UnknownWrapped;
1398 val = (*essence_container_ul)[codec_ul->wrapping_indicator_pos];
1399 switch (codec_ul->wrapping_indicator_type) {
1404 if (val == 0x03 || val == 0x04)
1413 return FrameWrapped;
1416 return UnknownWrapped;
1419 static int mxf_get_sorted_table_segments(MXFContext *mxf, int *nb_sorted_segments, MXFIndexTableSegment ***sorted_segments)
1421 int i, j, nb_segments = 0;
1422 MXFIndexTableSegment **unsorted_segments;
1423 int last_body_sid = -1, last_index_sid = -1, last_index_start = -1;
1425 /* count number of segments, allocate arrays and copy unsorted segments */
1426 for (i = 0; i < mxf->metadata_sets_count; i++)
1427 if (mxf->metadata_sets[i]->type == IndexTableSegment)
1431 return AVERROR_INVALIDDATA;
1433 if (!(unsorted_segments = av_calloc(nb_segments, sizeof(*unsorted_segments))) ||
1434 !(*sorted_segments = av_calloc(nb_segments, sizeof(**sorted_segments)))) {
1435 av_freep(sorted_segments);
1436 av_free(unsorted_segments);
1437 return AVERROR(ENOMEM);
1440 for (i = nb_segments = 0; i < mxf->metadata_sets_count; i++) {
1441 if (mxf->metadata_sets[i]->type == IndexTableSegment) {
1442 MXFIndexTableSegment *s = (MXFIndexTableSegment*)mxf->metadata_sets[i];
1443 if (s->edit_unit_byte_count || s->nb_index_entries)
1444 unsorted_segments[nb_segments++] = s;
1446 av_log(mxf->fc, AV_LOG_WARNING, "IndexSID %i segment at %"PRId64" missing EditUnitByteCount and IndexEntryArray\n",
1447 s->index_sid, s->index_start_position);
1452 av_freep(sorted_segments);
1453 av_free(unsorted_segments);
1454 return AVERROR_INVALIDDATA;
1457 *nb_sorted_segments = 0;
1459 /* sort segments by {BodySID, IndexSID, IndexStartPosition}, remove duplicates while we're at it */
1460 for (i = 0; i < nb_segments; i++) {
1461 int best = -1, best_body_sid = -1, best_index_sid = -1, best_index_start = -1;
1462 uint64_t best_index_duration = 0;
1464 for (j = 0; j < nb_segments; j++) {
1465 MXFIndexTableSegment *s = unsorted_segments[j];
1467 /* Require larger BosySID, IndexSID or IndexStartPosition then the previous entry. This removes duplicates.
1468 * We want the smallest values for the keys than what we currently have, unless this is the first such entry this time around.
1469 * If we come across an entry with the same IndexStartPosition but larger IndexDuration, then we'll prefer it over the one we currently have.
1472 s->body_sid > last_body_sid ||
1473 s->body_sid == last_body_sid && s->index_sid > last_index_sid ||
1474 s->body_sid == last_body_sid && s->index_sid == last_index_sid && s->index_start_position > last_index_start) &&
1476 s->body_sid < best_body_sid ||
1477 s->body_sid == best_body_sid && s->index_sid < best_index_sid ||
1478 s->body_sid == best_body_sid && s->index_sid == best_index_sid && s->index_start_position < best_index_start ||
1479 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)) {
1481 best_body_sid = s->body_sid;
1482 best_index_sid = s->index_sid;
1483 best_index_start = s->index_start_position;
1484 best_index_duration = s->index_duration;
1488 /* no suitable entry found -> we're done */
1492 (*sorted_segments)[(*nb_sorted_segments)++] = unsorted_segments[best];
1493 last_body_sid = best_body_sid;
1494 last_index_sid = best_index_sid;
1495 last_index_start = best_index_start;
1498 av_free(unsorted_segments);
1504 * Computes the absolute file offset of the given essence container offset
1506 static int mxf_absolute_bodysid_offset(MXFContext *mxf, int body_sid, int64_t offset, int64_t *offset_out, MXFPartition **partition_out)
1508 MXFPartition *last_p = NULL;
1512 return AVERROR(EINVAL);
1515 b = mxf->partitions_count;
1518 m0 = m = (a + b) >> 1;
1520 while (m < b && mxf->partitions[m].body_sid != body_sid)
1523 if (m < b && mxf->partitions[m].body_offset <= offset)
1530 last_p = &mxf->partitions[a];
1532 if (last_p && (!last_p->essence_length || last_p->essence_length > (offset - last_p->body_offset))) {
1533 *offset_out = last_p->essence_offset + (offset - last_p->body_offset);
1535 *partition_out = last_p;
1539 av_log(mxf->fc, AV_LOG_ERROR,
1540 "failed to find absolute offset of %"PRIX64" in BodySID %i - partial file?\n",
1543 return AVERROR_INVALIDDATA;
1547 * Returns the end position of the essence container with given BodySID, or zero if unknown
1549 static int64_t mxf_essence_container_end(MXFContext *mxf, int body_sid)
1551 for (int x = mxf->partitions_count - 1; x >= 0; x--) {
1552 MXFPartition *p = &mxf->partitions[x];
1554 if (p->body_sid != body_sid)
1557 if (!p->essence_length)
1560 return p->essence_offset + p->essence_length;
1566 /* EditUnit -> absolute offset */
1567 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)
1570 int64_t offset_temp = 0;
1572 edit_unit = av_rescale_q(edit_unit, index_table->segments[0]->index_edit_rate, edit_rate);
1574 for (i = 0; i < index_table->nb_segments; i++) {
1575 MXFIndexTableSegment *s = index_table->segments[i];
1577 edit_unit = FFMAX(edit_unit, s->index_start_position); /* clamp if trying to seek before start */
1579 if (edit_unit < s->index_start_position + s->index_duration) {
1580 int64_t index = edit_unit - s->index_start_position;
1582 if (s->edit_unit_byte_count)
1583 offset_temp += s->edit_unit_byte_count * index;
1585 if (s->nb_index_entries == 2 * s->index_duration + 1)
1586 index *= 2; /* Avid index */
1588 if (index < 0 || index >= s->nb_index_entries) {
1589 av_log(mxf->fc, AV_LOG_ERROR, "IndexSID %i segment at %"PRId64" IndexEntryArray too small\n",
1590 index_table->index_sid, s->index_start_position);
1591 return AVERROR_INVALIDDATA;
1594 offset_temp = s->stream_offset_entries[index];
1598 *edit_unit_out = av_rescale_q(edit_unit, edit_rate, s->index_edit_rate);
1600 return mxf_absolute_bodysid_offset(mxf, index_table->body_sid, offset_temp, offset_out, partition_out);
1602 /* EditUnitByteCount == 0 for VBR indexes, which is fine since they use explicit StreamOffsets */
1603 offset_temp += s->edit_unit_byte_count * s->index_duration;
1608 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);
1610 return AVERROR_INVALIDDATA;
1613 static int mxf_compute_ptses_fake_index(MXFContext *mxf, MXFIndexTable *index_table)
1616 int8_t max_temporal_offset = -128;
1619 /* first compute how many entries we have */
1620 for (i = 0; i < index_table->nb_segments; i++) {
1621 MXFIndexTableSegment *s = index_table->segments[i];
1623 if (!s->nb_index_entries) {
1624 index_table->nb_ptses = 0;
1625 return 0; /* no TemporalOffsets */
1628 if (s->index_duration > INT_MAX - index_table->nb_ptses) {
1629 index_table->nb_ptses = 0;
1630 av_log(mxf->fc, AV_LOG_ERROR, "ignoring IndexSID %d, duration is too large\n", s->index_sid);
1634 index_table->nb_ptses += s->index_duration;
1637 /* paranoid check */
1638 if (index_table->nb_ptses <= 0)
1641 if (!(index_table->ptses = av_calloc(index_table->nb_ptses, sizeof(int64_t))) ||
1642 !(index_table->fake_index = av_calloc(index_table->nb_ptses, sizeof(AVIndexEntry))) ||
1643 !(index_table->offsets = av_calloc(index_table->nb_ptses, sizeof(int8_t))) ||
1644 !(flags = av_calloc(index_table->nb_ptses, sizeof(uint8_t)))) {
1645 av_freep(&index_table->ptses);
1646 av_freep(&index_table->fake_index);
1647 av_freep(&index_table->offsets);
1648 return AVERROR(ENOMEM);
1651 /* we may have a few bad TemporalOffsets
1652 * make sure the corresponding PTSes don't have the bogus value 0 */
1653 for (x = 0; x < index_table->nb_ptses; x++)
1654 index_table->ptses[x] = AV_NOPTS_VALUE;
1668 * We want to transform it into this:
1679 * We do this by bucket sorting x by x+TemporalOffset[x] into mxf->ptses,
1680 * then settings mxf->first_dts = -max(TemporalOffset[x]).
1681 * The latter makes DTS <= PTS.
1683 for (i = x = 0; i < index_table->nb_segments; i++) {
1684 MXFIndexTableSegment *s = index_table->segments[i];
1685 int index_delta = 1;
1686 int n = s->nb_index_entries;
1688 if (s->nb_index_entries == 2 * s->index_duration + 1) {
1689 index_delta = 2; /* Avid index */
1690 /* ignore the last entry - it's the size of the essence container */
1694 for (j = 0; j < n; j += index_delta, x++) {
1695 int offset = s->temporal_offset_entries[j] / index_delta;
1696 int index = x + offset;
1698 if (x >= index_table->nb_ptses) {
1699 av_log(mxf->fc, AV_LOG_ERROR,
1700 "x >= nb_ptses - IndexEntryCount %i < IndexDuration %"PRId64"?\n",
1701 s->nb_index_entries, s->index_duration);
1705 flags[x] = !(s->flag_entries[j] & 0x30) ? AVINDEX_KEYFRAME : 0;
1707 if (index < 0 || index >= index_table->nb_ptses) {
1708 av_log(mxf->fc, AV_LOG_ERROR,
1709 "index entry %i + TemporalOffset %i = %i, which is out of bounds\n",
1714 index_table->offsets[x] = offset;
1715 index_table->ptses[index] = x;
1716 max_temporal_offset = FFMAX(max_temporal_offset, offset);
1720 /* calculate the fake index table in display order */
1721 for (x = 0; x < index_table->nb_ptses; x++) {
1722 index_table->fake_index[x].timestamp = x;
1723 if (index_table->ptses[x] != AV_NOPTS_VALUE)
1724 index_table->fake_index[index_table->ptses[x]].flags = flags[x];
1728 index_table->first_dts = -max_temporal_offset;
1734 * Sorts and collects index table segments into index tables.
1735 * Also computes PTSes if possible.
1737 static int mxf_compute_index_tables(MXFContext *mxf)
1739 int i, j, k, ret, nb_sorted_segments;
1740 MXFIndexTableSegment **sorted_segments = NULL;
1742 if ((ret = mxf_get_sorted_table_segments(mxf, &nb_sorted_segments, &sorted_segments)) ||
1743 nb_sorted_segments <= 0) {
1744 av_log(mxf->fc, AV_LOG_WARNING, "broken or empty index\n");
1748 /* sanity check and count unique BodySIDs/IndexSIDs */
1749 for (i = 0; i < nb_sorted_segments; i++) {
1750 if (i == 0 || sorted_segments[i-1]->index_sid != sorted_segments[i]->index_sid)
1751 mxf->nb_index_tables++;
1752 else if (sorted_segments[i-1]->body_sid != sorted_segments[i]->body_sid) {
1753 av_log(mxf->fc, AV_LOG_ERROR, "found inconsistent BodySID\n");
1754 ret = AVERROR_INVALIDDATA;
1755 goto finish_decoding_index;
1759 mxf->index_tables = av_mallocz_array(mxf->nb_index_tables,
1760 sizeof(*mxf->index_tables));
1761 if (!mxf->index_tables) {
1762 av_log(mxf->fc, AV_LOG_ERROR, "failed to allocate index tables\n");
1763 ret = AVERROR(ENOMEM);
1764 goto finish_decoding_index;
1767 /* distribute sorted segments to index tables */
1768 for (i = j = 0; i < nb_sorted_segments; i++) {
1769 if (i != 0 && sorted_segments[i-1]->index_sid != sorted_segments[i]->index_sid) {
1774 mxf->index_tables[j].nb_segments++;
1777 for (i = j = 0; j < mxf->nb_index_tables; i += mxf->index_tables[j++].nb_segments) {
1778 MXFIndexTable *t = &mxf->index_tables[j];
1779 MXFTrack *mxf_track = NULL;
1781 t->segments = av_mallocz_array(t->nb_segments,
1782 sizeof(*t->segments));
1785 av_log(mxf->fc, AV_LOG_ERROR, "failed to allocate IndexTableSegment"
1786 " pointer array\n");
1787 ret = AVERROR(ENOMEM);
1788 goto finish_decoding_index;
1791 if (sorted_segments[i]->index_start_position)
1792 av_log(mxf->fc, AV_LOG_WARNING, "IndexSID %i starts at EditUnit %"PRId64" - seeking may not work as expected\n",
1793 sorted_segments[i]->index_sid, sorted_segments[i]->index_start_position);
1795 memcpy(t->segments, &sorted_segments[i], t->nb_segments * sizeof(MXFIndexTableSegment*));
1796 t->index_sid = sorted_segments[i]->index_sid;
1797 t->body_sid = sorted_segments[i]->body_sid;
1799 if ((ret = mxf_compute_ptses_fake_index(mxf, t)) < 0)
1800 goto finish_decoding_index;
1802 for (k = 0; k < mxf->fc->nb_streams; k++) {
1803 MXFTrack *track = mxf->fc->streams[k]->priv_data;
1804 if (track && track->index_sid == t->index_sid) {
1810 /* fix zero IndexDurations */
1811 for (k = 0; k < t->nb_segments; k++) {
1812 if (!t->segments[k]->index_edit_rate.num || !t->segments[k]->index_edit_rate.den) {
1813 av_log(mxf->fc, AV_LOG_WARNING, "IndexSID %i segment %i has invalid IndexEditRate\n",
1816 t->segments[k]->index_edit_rate = mxf_track->edit_rate;
1819 if (t->segments[k]->index_duration)
1822 if (t->nb_segments > 1)
1823 av_log(mxf->fc, AV_LOG_WARNING, "IndexSID %i segment %i has zero IndexDuration and there's more than one segment\n",
1827 av_log(mxf->fc, AV_LOG_WARNING, "no streams?\n");
1831 /* assume the first stream's duration is reasonable
1832 * leave index_duration = 0 on further segments in case we have any (unlikely)
1834 t->segments[k]->index_duration = mxf_track->original_duration;
1840 finish_decoding_index:
1841 av_free(sorted_segments);
1845 static int mxf_is_intra_only(MXFDescriptor *descriptor)
1847 return mxf_get_codec_ul(mxf_intra_only_essence_container_uls,
1848 &descriptor->essence_container_ul)->id != AV_CODEC_ID_NONE ||
1849 mxf_get_codec_ul(mxf_intra_only_picture_essence_coding_uls,
1850 &descriptor->essence_codec_ul)->id != AV_CODEC_ID_NONE;
1853 static int mxf_uid_to_str(UID uid, char **str)
1857 p = *str = av_mallocz(sizeof(UID) * 2 + 4 + 1);
1859 return AVERROR(ENOMEM);
1860 for (i = 0; i < sizeof(UID); i++) {
1861 snprintf(p, 2 + 1, "%.2x", uid[i]);
1863 if (i == 3 || i == 5 || i == 7 || i == 9) {
1864 snprintf(p, 1 + 1, "-");
1871 static int mxf_umid_to_str(UID ul, UID uid, char **str)
1875 p = *str = av_mallocz(sizeof(UID) * 4 + 2 + 1);
1877 return AVERROR(ENOMEM);
1878 snprintf(p, 2 + 1, "0x");
1880 for (i = 0; i < sizeof(UID); i++) {
1881 snprintf(p, 2 + 1, "%.2X", ul[i]);
1885 for (i = 0; i < sizeof(UID); i++) {
1886 snprintf(p, 2 + 1, "%.2X", uid[i]);
1892 static int mxf_add_umid_metadata(AVDictionary **pm, const char *key, MXFPackage* package)
1898 if ((ret = mxf_umid_to_str(package->package_ul, package->package_uid, &str)) < 0)
1900 av_dict_set(pm, key, str, AV_DICT_DONT_STRDUP_VAL);
1904 static int mxf_add_timecode_metadata(AVDictionary **pm, const char *key, AVTimecode *tc)
1906 char buf[AV_TIMECODE_STR_SIZE];
1907 av_dict_set(pm, key, av_timecode_make_string(tc, buf, 0), 0);
1912 static MXFTimecodeComponent* mxf_resolve_timecode_component(MXFContext *mxf, UID *strong_ref)
1914 MXFStructuralComponent *component = NULL;
1915 MXFPulldownComponent *pulldown = NULL;
1917 component = mxf_resolve_strong_ref(mxf, strong_ref, AnyType);
1921 switch (component->type) {
1922 case TimecodeComponent:
1923 return (MXFTimecodeComponent*)component;
1924 case PulldownComponent: /* timcode component may be located on a pulldown component */
1925 pulldown = (MXFPulldownComponent*)component;
1926 return mxf_resolve_strong_ref(mxf, &pulldown->input_segment_ref, TimecodeComponent);
1933 static MXFPackage* mxf_resolve_source_package(MXFContext *mxf, UID package_ul, UID package_uid)
1935 MXFPackage *package = NULL;
1938 for (i = 0; i < mxf->packages_count; i++) {
1939 package = mxf_resolve_strong_ref(mxf, &mxf->packages_refs[i], SourcePackage);
1943 if (!memcmp(package->package_ul, package_ul, 16) && !memcmp(package->package_uid, package_uid, 16))
1949 static MXFDescriptor* mxf_resolve_multidescriptor(MXFContext *mxf, MXFDescriptor *descriptor, int track_id)
1951 MXFDescriptor *sub_descriptor = NULL;
1957 if (descriptor->type == MultipleDescriptor) {
1958 for (i = 0; i < descriptor->sub_descriptors_count; i++) {
1959 sub_descriptor = mxf_resolve_strong_ref(mxf, &descriptor->sub_descriptors_refs[i], Descriptor);
1961 if (!sub_descriptor) {
1962 av_log(mxf->fc, AV_LOG_ERROR, "could not resolve sub descriptor strong ref\n");
1965 if (sub_descriptor->linked_track_id == track_id) {
1966 return sub_descriptor;
1969 } else if (descriptor->type == Descriptor)
1975 static MXFStructuralComponent* mxf_resolve_essence_group_choice(MXFContext *mxf, MXFEssenceGroup *essence_group)
1977 MXFStructuralComponent *component = NULL;
1978 MXFPackage *package = NULL;
1979 MXFDescriptor *descriptor = NULL;
1982 if (!essence_group || !essence_group->structural_components_count)
1985 /* essence groups contains multiple representations of the same media,
1986 this return the first components with a valid Descriptor typically index 0 */
1987 for (i =0; i < essence_group->structural_components_count; i++){
1988 component = mxf_resolve_strong_ref(mxf, &essence_group->structural_components_refs[i], SourceClip);
1992 if (!(package = mxf_resolve_source_package(mxf, component->source_package_ul, component->source_package_uid)))
1995 descriptor = mxf_resolve_strong_ref(mxf, &package->descriptor_ref, Descriptor);
2002 static MXFStructuralComponent* mxf_resolve_sourceclip(MXFContext *mxf, UID *strong_ref)
2004 MXFStructuralComponent *component = NULL;
2006 component = mxf_resolve_strong_ref(mxf, strong_ref, AnyType);
2009 switch (component->type) {
2013 return mxf_resolve_essence_group_choice(mxf, (MXFEssenceGroup*) component);
2020 static int mxf_parse_package_comments(MXFContext *mxf, AVDictionary **pm, MXFPackage *package)
2022 MXFTaggedValue *tag;
2026 for (i = 0; i < package->comment_count; i++) {
2027 tag = mxf_resolve_strong_ref(mxf, &package->comment_refs[i], TaggedValue);
2028 if (!tag || !tag->name || !tag->value)
2031 key = av_asprintf("comment_%s", tag->name);
2033 return AVERROR(ENOMEM);
2035 av_dict_set(pm, key, tag->value, AV_DICT_DONT_STRDUP_KEY);
2040 static int mxf_parse_physical_source_package(MXFContext *mxf, MXFTrack *source_track, AVStream *st)
2042 MXFPackage *physical_package = NULL;
2043 MXFTrack *physical_track = NULL;
2044 MXFStructuralComponent *sourceclip = NULL;
2045 MXFTimecodeComponent *mxf_tc = NULL;
2049 int64_t start_position;
2051 for (i = 0; i < source_track->sequence->structural_components_count; i++) {
2052 sourceclip = mxf_resolve_strong_ref(mxf, &source_track->sequence->structural_components_refs[i], SourceClip);
2056 if (!(physical_package = mxf_resolve_source_package(mxf, sourceclip->source_package_ul, sourceclip->source_package_uid)))
2059 mxf_add_umid_metadata(&st->metadata, "reel_umid", physical_package);
2061 /* the name of physical source package is name of the reel or tape */
2062 if (physical_package->name && physical_package->name[0])
2063 av_dict_set(&st->metadata, "reel_name", physical_package->name, 0);
2065 /* the source timecode is calculated by adding the start_position of the sourceclip from the file source package track
2066 * to the start_frame of the timecode component located on one of the tracks of the physical source package.
2068 for (j = 0; j < physical_package->tracks_count; j++) {
2069 if (!(physical_track = mxf_resolve_strong_ref(mxf, &physical_package->tracks_refs[j], Track))) {
2070 av_log(mxf->fc, AV_LOG_ERROR, "could not resolve source track strong ref\n");
2074 if (!(physical_track->sequence = mxf_resolve_strong_ref(mxf, &physical_track->sequence_ref, Sequence))) {
2075 av_log(mxf->fc, AV_LOG_ERROR, "could not resolve source track sequence strong ref\n");
2079 if (physical_track->edit_rate.num <= 0 ||
2080 physical_track->edit_rate.den <= 0) {
2081 av_log(mxf->fc, AV_LOG_WARNING,
2082 "Invalid edit rate (%d/%d) found on structural"
2083 " component #%d, defaulting to 25/1\n",
2084 physical_track->edit_rate.num,
2085 physical_track->edit_rate.den, i);
2086 physical_track->edit_rate = (AVRational){25, 1};
2089 for (k = 0; k < physical_track->sequence->structural_components_count; k++) {
2090 if (!(mxf_tc = mxf_resolve_timecode_component(mxf, &physical_track->sequence->structural_components_refs[k])))
2093 flags = mxf_tc->drop_frame == 1 ? AV_TIMECODE_FLAG_DROPFRAME : 0;
2094 /* scale sourceclip start_position to match physical track edit rate */
2095 start_position = av_rescale_q(sourceclip->start_position,
2096 physical_track->edit_rate,
2097 source_track->edit_rate);
2099 if (av_timecode_init(&tc, mxf_tc->rate, flags, start_position + mxf_tc->start_frame, mxf->fc) == 0) {
2100 mxf_add_timecode_metadata(&st->metadata, "timecode", &tc);
2110 static int mxf_add_metadata_stream(MXFContext *mxf, MXFTrack *track)
2112 MXFStructuralComponent *component = NULL;
2113 const MXFCodecUL *codec_ul = NULL;
2114 MXFPackage tmp_package;
2118 for (j = 0; j < track->sequence->structural_components_count; j++) {
2119 component = mxf_resolve_sourceclip(mxf, &track->sequence->structural_components_refs[j]);
2127 st = avformat_new_stream(mxf->fc, NULL);
2129 av_log(mxf->fc, AV_LOG_ERROR, "could not allocate metadata stream\n");
2130 return AVERROR(ENOMEM);
2133 st->codecpar->codec_type = AVMEDIA_TYPE_DATA;
2134 st->codecpar->codec_id = AV_CODEC_ID_NONE;
2135 st->id = track->track_id;
2137 memcpy(&tmp_package.package_ul, component->source_package_ul, 16);
2138 memcpy(&tmp_package.package_uid, component->source_package_uid, 16);
2139 mxf_add_umid_metadata(&st->metadata, "file_package_umid", &tmp_package);
2140 if (track->name && track->name[0])
2141 av_dict_set(&st->metadata, "track_name", track->name, 0);
2143 codec_ul = mxf_get_codec_ul(ff_mxf_data_definition_uls, &track->sequence->data_definition_ul);
2144 av_dict_set(&st->metadata, "data_type", av_get_media_type_string(codec_ul->id), 0);
2148 static int mxf_parse_structural_metadata(MXFContext *mxf)
2150 MXFPackage *material_package = NULL;
2153 av_log(mxf->fc, AV_LOG_TRACE, "metadata sets count %d\n", mxf->metadata_sets_count);
2154 /* TODO: handle multiple material packages (OP3x) */
2155 for (i = 0; i < mxf->packages_count; i++) {
2156 material_package = mxf_resolve_strong_ref(mxf, &mxf->packages_refs[i], MaterialPackage);
2157 if (material_package) break;
2159 if (!material_package) {
2160 av_log(mxf->fc, AV_LOG_ERROR, "no material package found\n");
2161 return AVERROR_INVALIDDATA;
2164 mxf_add_umid_metadata(&mxf->fc->metadata, "material_package_umid", material_package);
2165 if (material_package->name && material_package->name[0])
2166 av_dict_set(&mxf->fc->metadata, "material_package_name", material_package->name, 0);
2167 mxf_parse_package_comments(mxf, &mxf->fc->metadata, material_package);
2169 for (i = 0; i < material_package->tracks_count; i++) {
2170 MXFPackage *source_package = NULL;
2171 MXFTrack *material_track = NULL;
2172 MXFTrack *source_track = NULL;
2173 MXFTrack *temp_track = NULL;
2174 MXFDescriptor *descriptor = NULL;
2175 MXFStructuralComponent *component = NULL;
2176 MXFTimecodeComponent *mxf_tc = NULL;
2177 UID *essence_container_ul = NULL;
2178 const MXFCodecUL *codec_ul = NULL;
2179 const MXFCodecUL *container_ul = NULL;
2180 const MXFCodecUL *pix_fmt_ul = NULL;
2185 if (!(material_track = mxf_resolve_strong_ref(mxf, &material_package->tracks_refs[i], Track))) {
2186 av_log(mxf->fc, AV_LOG_ERROR, "could not resolve material track strong ref\n");
2190 if ((component = mxf_resolve_strong_ref(mxf, &material_track->sequence_ref, TimecodeComponent))) {
2191 mxf_tc = (MXFTimecodeComponent*)component;
2192 flags = mxf_tc->drop_frame == 1 ? AV_TIMECODE_FLAG_DROPFRAME : 0;
2193 if (av_timecode_init(&tc, mxf_tc->rate, flags, mxf_tc->start_frame, mxf->fc) == 0) {
2194 mxf_add_timecode_metadata(&mxf->fc->metadata, "timecode", &tc);
2198 if (!(material_track->sequence = mxf_resolve_strong_ref(mxf, &material_track->sequence_ref, Sequence))) {
2199 av_log(mxf->fc, AV_LOG_ERROR, "could not resolve material track sequence strong ref\n");
2203 for (j = 0; j < material_track->sequence->structural_components_count; j++) {
2204 component = mxf_resolve_strong_ref(mxf, &material_track->sequence->structural_components_refs[j], TimecodeComponent);
2208 mxf_tc = (MXFTimecodeComponent*)component;
2209 flags = mxf_tc->drop_frame == 1 ? AV_TIMECODE_FLAG_DROPFRAME : 0;
2210 if (av_timecode_init(&tc, mxf_tc->rate, flags, mxf_tc->start_frame, mxf->fc) == 0) {
2211 mxf_add_timecode_metadata(&mxf->fc->metadata, "timecode", &tc);
2216 /* TODO: handle multiple source clips, only finds first valid source clip */
2217 if(material_track->sequence->structural_components_count > 1)
2218 av_log(mxf->fc, AV_LOG_WARNING, "material track %d: has %d components\n",
2219 material_track->track_id, material_track->sequence->structural_components_count);
2221 for (j = 0; j < material_track->sequence->structural_components_count; j++) {
2222 component = mxf_resolve_sourceclip(mxf, &material_track->sequence->structural_components_refs[j]);
2226 source_package = mxf_resolve_source_package(mxf, component->source_package_ul, component->source_package_uid);
2227 if (!source_package) {
2228 av_log(mxf->fc, AV_LOG_TRACE, "material track %d: no corresponding source package found\n", material_track->track_id);
2231 for (k = 0; k < source_package->tracks_count; k++) {
2232 if (!(temp_track = mxf_resolve_strong_ref(mxf, &source_package->tracks_refs[k], Track))) {
2233 av_log(mxf->fc, AV_LOG_ERROR, "could not resolve source track strong ref\n");
2234 ret = AVERROR_INVALIDDATA;
2237 if (temp_track->track_id == component->source_track_id) {
2238 source_track = temp_track;
2242 if (!source_track) {
2243 av_log(mxf->fc, AV_LOG_ERROR, "material track %d: no corresponding source track found\n", material_track->track_id);
2247 for (k = 0; k < mxf->essence_container_data_count; k++) {
2248 MXFEssenceContainerData *essence_data;
2250 if (!(essence_data = mxf_resolve_strong_ref(mxf, &mxf->essence_container_data_refs[k], EssenceContainerData))) {
2251 av_log(mxf->fc, AV_LOG_TRACE, "could not resolve essence container data strong ref\n");
2254 if (!memcmp(component->source_package_ul, essence_data->package_ul, sizeof(UID)) && !memcmp(component->source_package_uid, essence_data->package_uid, sizeof(UID))) {
2255 source_track->body_sid = essence_data->body_sid;
2256 source_track->index_sid = essence_data->index_sid;
2261 if(source_track && component)
2264 if (!source_track || !component || !source_package) {
2265 if((ret = mxf_add_metadata_stream(mxf, material_track)))
2270 if (!(source_track->sequence = mxf_resolve_strong_ref(mxf, &source_track->sequence_ref, Sequence))) {
2271 av_log(mxf->fc, AV_LOG_ERROR, "could not resolve source track sequence strong ref\n");
2272 ret = AVERROR_INVALIDDATA;
2276 /* 0001GL00.MXF.A1.mxf_opatom.mxf has the same SourcePackageID as 0001GL.MXF.V1.mxf_opatom.mxf
2277 * This would result in both files appearing to have two streams. Work around this by sanity checking DataDefinition */
2278 if (memcmp(material_track->sequence->data_definition_ul, source_track->sequence->data_definition_ul, 16)) {
2279 av_log(mxf->fc, AV_LOG_ERROR, "material track %d: DataDefinition mismatch\n", material_track->track_id);
2283 st = avformat_new_stream(mxf->fc, NULL);
2285 av_log(mxf->fc, AV_LOG_ERROR, "could not allocate stream\n");
2286 ret = AVERROR(ENOMEM);
2289 st->id = material_track->track_id;
2290 st->priv_data = source_track;
2292 source_package->descriptor = mxf_resolve_strong_ref(mxf, &source_package->descriptor_ref, AnyType);
2293 descriptor = mxf_resolve_multidescriptor(mxf, source_package->descriptor, source_track->track_id);
2295 /* A SourceClip from a EssenceGroup may only be a single frame of essence data. The clips duration is then how many
2296 * frames its suppose to repeat for. Descriptor->duration, if present, contains the real duration of the essence data */
2297 if (descriptor && descriptor->duration != AV_NOPTS_VALUE)
2298 source_track->original_duration = st->duration = FFMIN(descriptor->duration, component->duration);
2300 source_track->original_duration = st->duration = component->duration;
2302 if (st->duration == -1)
2303 st->duration = AV_NOPTS_VALUE;
2304 st->start_time = component->start_position;
2305 if (material_track->edit_rate.num <= 0 ||
2306 material_track->edit_rate.den <= 0) {
2307 av_log(mxf->fc, AV_LOG_WARNING,
2308 "Invalid edit rate (%d/%d) found on stream #%d, "
2309 "defaulting to 25/1\n",
2310 material_track->edit_rate.num,
2311 material_track->edit_rate.den, st->index);
2312 material_track->edit_rate = (AVRational){25, 1};
2314 avpriv_set_pts_info(st, 64, material_track->edit_rate.den, material_track->edit_rate.num);
2316 /* ensure SourceTrack EditRate == MaterialTrack EditRate since only
2317 * the former is accessible via st->priv_data */
2318 source_track->edit_rate = material_track->edit_rate;
2320 PRINT_KEY(mxf->fc, "data definition ul", source_track->sequence->data_definition_ul);
2321 codec_ul = mxf_get_codec_ul(ff_mxf_data_definition_uls, &source_track->sequence->data_definition_ul);
2322 st->codecpar->codec_type = codec_ul->id;
2325 av_log(mxf->fc, AV_LOG_INFO, "source track %d: stream %d, no descriptor found\n", source_track->track_id, st->index);
2328 PRINT_KEY(mxf->fc, "essence codec ul", descriptor->essence_codec_ul);
2329 PRINT_KEY(mxf->fc, "essence container ul", descriptor->essence_container_ul);
2330 essence_container_ul = &descriptor->essence_container_ul;
2331 source_track->wrapping = (mxf->op == OPAtom) ? ClipWrapped : mxf_get_wrapping_kind(essence_container_ul);
2332 if (source_track->wrapping == UnknownWrapped)
2333 av_log(mxf->fc, AV_LOG_INFO, "wrapping of stream %d is unknown\n", st->index);
2334 /* HACK: replacing the original key with mxf_encrypted_essence_container
2335 * is not allowed according to s429-6, try to find correct information anyway */
2336 if (IS_KLV_KEY(essence_container_ul, mxf_encrypted_essence_container)) {
2337 av_log(mxf->fc, AV_LOG_INFO, "broken encrypted mxf file\n");
2338 for (k = 0; k < mxf->metadata_sets_count; k++) {
2339 MXFMetadataSet *metadata = mxf->metadata_sets[k];
2340 if (metadata->type == CryptoContext) {
2341 essence_container_ul = &((MXFCryptoContext *)metadata)->source_container_ul;
2347 /* TODO: drop PictureEssenceCoding and SoundEssenceCompression, only check EssenceContainer */
2348 codec_ul = mxf_get_codec_ul(ff_mxf_codec_uls, &descriptor->essence_codec_ul);
2349 st->codecpar->codec_id = (enum AVCodecID)codec_ul->id;
2350 if (st->codecpar->codec_id == AV_CODEC_ID_NONE) {
2351 codec_ul = mxf_get_codec_ul(ff_mxf_codec_uls, &descriptor->codec_ul);
2352 st->codecpar->codec_id = (enum AVCodecID)codec_ul->id;
2355 av_log(mxf->fc, AV_LOG_VERBOSE, "%s: Universal Label: ",
2356 avcodec_get_name(st->codecpar->codec_id));
2357 for (k = 0; k < 16; k++) {
2358 av_log(mxf->fc, AV_LOG_VERBOSE, "%.2x",
2359 descriptor->essence_codec_ul[k]);
2360 if (!(k+1 & 19) || k == 5)
2361 av_log(mxf->fc, AV_LOG_VERBOSE, ".");
2363 av_log(mxf->fc, AV_LOG_VERBOSE, "\n");
2365 mxf_add_umid_metadata(&st->metadata, "file_package_umid", source_package);
2366 if (source_package->name && source_package->name[0])
2367 av_dict_set(&st->metadata, "file_package_name", source_package->name, 0);
2368 if (material_track->name && material_track->name[0])
2369 av_dict_set(&st->metadata, "track_name", material_track->name, 0);
2371 mxf_parse_physical_source_package(mxf, source_track, st);
2373 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
2374 source_track->intra_only = mxf_is_intra_only(descriptor);
2375 container_ul = mxf_get_codec_ul(mxf_picture_essence_container_uls, essence_container_ul);
2376 if (st->codecpar->codec_id == AV_CODEC_ID_NONE)
2377 st->codecpar->codec_id = container_ul->id;
2378 st->codecpar->width = descriptor->width;
2379 st->codecpar->height = descriptor->height; /* Field height, not frame height */
2380 switch (descriptor->frame_layout) {
2382 st->codecpar->field_order = AV_FIELD_PROGRESSIVE;
2385 /* Every other line is stored and needs to be duplicated. */
2386 av_log(mxf->fc, AV_LOG_INFO, "OneField frame layout isn't currently supported\n");
2387 break; /* The correct thing to do here is fall through, but by breaking we might be
2388 able to decode some streams at half the vertical resolution, rather than not al all.
2389 It's also for compatibility with the old behavior. */
2392 case SegmentedFrame:
2393 st->codecpar->field_order = AV_FIELD_PROGRESSIVE;
2394 case SeparateFields:
2395 av_log(mxf->fc, AV_LOG_DEBUG, "video_line_map: (%d, %d), field_dominance: %d\n",
2396 descriptor->video_line_map[0], descriptor->video_line_map[1],
2397 descriptor->field_dominance);
2398 if ((descriptor->video_line_map[0] > 0) && (descriptor->video_line_map[1] > 0)) {
2399 /* Detect coded field order from VideoLineMap:
2400 * (even, even) => bottom field coded first
2401 * (even, odd) => top field coded first
2402 * (odd, even) => top field coded first
2403 * (odd, odd) => bottom field coded first
2405 if ((descriptor->video_line_map[0] + descriptor->video_line_map[1]) % 2) {
2406 switch (descriptor->field_dominance) {
2407 case MXF_FIELD_DOMINANCE_DEFAULT:
2408 case MXF_FIELD_DOMINANCE_FF:
2409 st->codecpar->field_order = AV_FIELD_TT;
2411 case MXF_FIELD_DOMINANCE_FL:
2412 st->codecpar->field_order = AV_FIELD_TB;
2415 avpriv_request_sample(mxf->fc,
2416 "Field dominance %d support",
2417 descriptor->field_dominance);
2420 switch (descriptor->field_dominance) {
2421 case MXF_FIELD_DOMINANCE_DEFAULT:
2422 case MXF_FIELD_DOMINANCE_FF:
2423 st->codecpar->field_order = AV_FIELD_BB;
2425 case MXF_FIELD_DOMINANCE_FL:
2426 st->codecpar->field_order = AV_FIELD_BT;
2429 avpriv_request_sample(mxf->fc,
2430 "Field dominance %d support",
2431 descriptor->field_dominance);
2435 /* Turn field height into frame height. */
2436 st->codecpar->height *= 2;
2439 av_log(mxf->fc, AV_LOG_INFO, "Unknown frame layout type: %d\n", descriptor->frame_layout);
2442 if (st->codecpar->codec_id == AV_CODEC_ID_PRORES) {
2443 switch (descriptor->essence_codec_ul[14]) {
2444 case 1: st->codecpar->codec_tag = MKTAG('a','p','c','o'); break;
2445 case 2: st->codecpar->codec_tag = MKTAG('a','p','c','s'); break;
2446 case 3: st->codecpar->codec_tag = MKTAG('a','p','c','n'); break;
2447 case 4: st->codecpar->codec_tag = MKTAG('a','p','c','h'); break;
2448 case 5: st->codecpar->codec_tag = MKTAG('a','p','4','h'); break;
2449 case 6: st->codecpar->codec_tag = MKTAG('a','p','4','x'); break;
2453 if (st->codecpar->codec_id == AV_CODEC_ID_RAWVIDEO) {
2454 st->codecpar->format = descriptor->pix_fmt;
2455 if (st->codecpar->format == AV_PIX_FMT_NONE) {
2456 pix_fmt_ul = mxf_get_codec_ul(ff_mxf_pixel_format_uls,
2457 &descriptor->essence_codec_ul);
2458 st->codecpar->format = (enum AVPixelFormat)pix_fmt_ul->id;
2459 if (st->codecpar->format== AV_PIX_FMT_NONE) {
2460 st->codecpar->codec_tag = mxf_get_codec_ul(ff_mxf_codec_tag_uls,
2461 &descriptor->essence_codec_ul)->id;
2462 if (!st->codecpar->codec_tag) {
2463 /* support files created before RP224v10 by defaulting to UYVY422
2464 if subsampling is 4:2:2 and component depth is 8-bit */
2465 if (descriptor->horiz_subsampling == 2 &&
2466 descriptor->vert_subsampling == 1 &&
2467 descriptor->component_depth == 8) {
2468 st->codecpar->format = AV_PIX_FMT_UYVY422;
2474 st->need_parsing = AVSTREAM_PARSE_HEADERS;
2475 if (material_track->sequence->origin) {
2476 av_dict_set_int(&st->metadata, "material_track_origin", material_track->sequence->origin, 0);
2478 if (source_track->sequence->origin) {
2479 av_dict_set_int(&st->metadata, "source_track_origin", source_track->sequence->origin, 0);
2481 if (descriptor->aspect_ratio.num && descriptor->aspect_ratio.den)
2482 st->display_aspect_ratio = descriptor->aspect_ratio;
2483 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
2484 container_ul = mxf_get_codec_ul(mxf_sound_essence_container_uls, essence_container_ul);
2485 /* Only overwrite existing codec ID if it is unset or A-law, which is the default according to SMPTE RP 224. */
2486 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))
2487 st->codecpar->codec_id = (enum AVCodecID)container_ul->id;
2488 st->codecpar->channels = descriptor->channels;
2490 if (descriptor->sample_rate.den > 0) {
2491 st->codecpar->sample_rate = descriptor->sample_rate.num / descriptor->sample_rate.den;
2492 avpriv_set_pts_info(st, 64, descriptor->sample_rate.den, descriptor->sample_rate.num);
2494 av_log(mxf->fc, AV_LOG_WARNING, "invalid sample rate (%d/%d) "
2495 "found for stream #%d, time base forced to 1/48000\n",
2496 descriptor->sample_rate.num, descriptor->sample_rate.den,
2498 avpriv_set_pts_info(st, 64, 1, 48000);
2501 /* if duration is set, rescale it from EditRate to SampleRate */
2502 if (st->duration != AV_NOPTS_VALUE)
2503 st->duration = av_rescale_q(st->duration,
2504 av_inv_q(material_track->edit_rate),
2507 /* TODO: implement AV_CODEC_ID_RAWAUDIO */
2508 if (st->codecpar->codec_id == AV_CODEC_ID_PCM_S16LE) {
2509 if (descriptor->bits_per_sample > 16 && descriptor->bits_per_sample <= 24)
2510 st->codecpar->codec_id = AV_CODEC_ID_PCM_S24LE;
2511 else if (descriptor->bits_per_sample == 32)
2512 st->codecpar->codec_id = AV_CODEC_ID_PCM_S32LE;
2513 } else if (st->codecpar->codec_id == AV_CODEC_ID_PCM_S16BE) {
2514 if (descriptor->bits_per_sample > 16 && descriptor->bits_per_sample <= 24)
2515 st->codecpar->codec_id = AV_CODEC_ID_PCM_S24BE;
2516 else if (descriptor->bits_per_sample == 32)
2517 st->codecpar->codec_id = AV_CODEC_ID_PCM_S32BE;
2518 } else if (st->codecpar->codec_id == AV_CODEC_ID_MP2) {
2519 st->need_parsing = AVSTREAM_PARSE_FULL;
2521 st->codecpar->bits_per_coded_sample = av_get_bits_per_sample(st->codecpar->codec_id);
2522 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_DATA) {
2523 enum AVMediaType type;
2524 container_ul = mxf_get_codec_ul(mxf_data_essence_container_uls, essence_container_ul);
2525 if (st->codecpar->codec_id == AV_CODEC_ID_NONE)
2526 st->codecpar->codec_id = container_ul->id;
2527 type = avcodec_get_type(st->codecpar->codec_id);
2528 if (type == AVMEDIA_TYPE_SUBTITLE)
2529 st->codecpar->codec_type = type;
2530 if (container_ul->desc)
2531 av_dict_set(&st->metadata, "data_type", container_ul->desc, 0);
2532 if (mxf->eia608_extract &&
2533 !strcmp(container_ul->desc, "vbi_vanc_smpte_436M")) {
2534 st->codecpar->codec_type = AVMEDIA_TYPE_SUBTITLE;
2535 st->codecpar->codec_id = AV_CODEC_ID_EIA_608;
2538 if (descriptor->extradata) {
2539 if (!ff_alloc_extradata(st->codecpar, descriptor->extradata_size)) {
2540 memcpy(st->codecpar->extradata, descriptor->extradata, descriptor->extradata_size);
2542 } else if (st->codecpar->codec_id == AV_CODEC_ID_H264) {
2543 int coded_width = mxf_get_codec_ul(mxf_intra_only_picture_coded_width,
2544 &descriptor->essence_codec_ul)->id;
2546 st->codecpar->width = coded_width;
2547 ret = ff_generate_avci_extradata(st);
2551 if (st->codecpar->codec_type != AVMEDIA_TYPE_DATA && source_track->wrapping != FrameWrapped) {
2552 /* TODO: decode timestamps */
2553 st->need_parsing = AVSTREAM_PARSE_TIMESTAMPS;
2557 for (int i = 0; i < mxf->fc->nb_streams; i++) {
2558 MXFTrack *track1 = mxf->fc->streams[i]->priv_data;
2559 if (track1 && track1->body_sid) {
2560 for (int j = i + 1; j < mxf->fc->nb_streams; j++) {
2561 MXFTrack *track2 = mxf->fc->streams[j]->priv_data;
2562 if (track2 && track1->body_sid == track2->body_sid && track1->wrapping != track2->wrapping) {
2563 if (track1->wrapping == UnknownWrapped)
2564 track1->wrapping = track2->wrapping;
2565 else if (track2->wrapping == UnknownWrapped)
2566 track2->wrapping = track1->wrapping;
2568 av_log(mxf->fc, AV_LOG_ERROR, "stream %d and stream %d have the same BodySID (%d) "
2569 "with different wrapping\n", i, j, track1->body_sid);
2580 static int64_t mxf_timestamp_to_int64(uint64_t timestamp)
2582 struct tm time = { 0 };
2584 time.tm_year = (timestamp >> 48) - 1900;
2585 time.tm_mon = (timestamp >> 40 & 0xFF) - 1;
2586 time.tm_mday = (timestamp >> 32 & 0xFF);
2587 time.tm_hour = (timestamp >> 24 & 0xFF);
2588 time.tm_min = (timestamp >> 16 & 0xFF);
2589 time.tm_sec = (timestamp >> 8 & 0xFF);
2590 msecs = (timestamp & 0xFF) * 4;
2592 /* Clip values for legacy reasons. Maybe we should return error instead? */
2593 time.tm_mon = av_clip(time.tm_mon, 0, 11);
2594 time.tm_mday = av_clip(time.tm_mday, 1, 31);
2595 time.tm_hour = av_clip(time.tm_hour, 0, 23);
2596 time.tm_min = av_clip(time.tm_min, 0, 59);
2597 time.tm_sec = av_clip(time.tm_sec, 0, 59);
2598 msecs = av_clip(msecs, 0, 999);
2600 return (int64_t)av_timegm(&time) * 1000000 + msecs * 1000;
2603 #define SET_STR_METADATA(pb, name, str) do { \
2604 if ((ret = mxf_read_utf16be_string(pb, size, &str)) < 0) \
2606 av_dict_set(&s->metadata, name, str, AV_DICT_DONT_STRDUP_VAL); \
2609 #define SET_UID_METADATA(pb, name, var, str) do { \
2610 avio_read(pb, var, 16); \
2611 if ((ret = mxf_uid_to_str(var, &str)) < 0) \
2613 av_dict_set(&s->metadata, name, str, AV_DICT_DONT_STRDUP_VAL); \
2616 #define SET_TS_METADATA(pb, name, var, str) do { \
2617 var = avio_rb64(pb); \
2618 if (var && (ret = avpriv_dict_set_timestamp(&s->metadata, name, mxf_timestamp_to_int64(var))) < 0) \
2622 static int mxf_read_identification_metadata(void *arg, AVIOContext *pb, int tag, int size, UID _uid, int64_t klv_offset)
2624 MXFContext *mxf = arg;
2625 AVFormatContext *s = mxf->fc;
2632 SET_STR_METADATA(pb, "company_name", str);
2635 SET_STR_METADATA(pb, "product_name", str);
2638 SET_STR_METADATA(pb, "product_version", str);
2641 SET_UID_METADATA(pb, "product_uid", uid, str);
2644 SET_TS_METADATA(pb, "modification_date", ts, str);
2647 SET_STR_METADATA(pb, "application_platform", str);
2650 SET_UID_METADATA(pb, "generation_uid", uid, str);
2653 SET_UID_METADATA(pb, "uid", uid, str);
2659 static int mxf_read_preface_metadata(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
2661 MXFContext *mxf = arg;
2662 AVFormatContext *s = mxf->fc;
2666 if (tag >= 0x8000 && (IS_KLV_KEY(uid, mxf_avid_project_name))) {
2667 SET_STR_METADATA(pb, "project_name", str);
2672 static const MXFMetadataReadTableEntry mxf_metadata_read_table[] = {
2673 { { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x05,0x01,0x00 }, mxf_read_primer_pack },
2674 { { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02,0x01,0x00 }, mxf_read_partition_pack },
2675 { { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02,0x02,0x00 }, mxf_read_partition_pack },
2676 { { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02,0x03,0x00 }, mxf_read_partition_pack },
2677 { { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02,0x04,0x00 }, mxf_read_partition_pack },
2678 { { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x03,0x01,0x00 }, mxf_read_partition_pack },
2679 { { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x03,0x02,0x00 }, mxf_read_partition_pack },
2680 { { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x03,0x03,0x00 }, mxf_read_partition_pack },
2681 { { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x03,0x04,0x00 }, mxf_read_partition_pack },
2682 { { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x04,0x02,0x00 }, mxf_read_partition_pack },
2683 { { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x04,0x04,0x00 }, mxf_read_partition_pack },
2684 { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x2f,0x00 }, mxf_read_preface_metadata },
2685 { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x30,0x00 }, mxf_read_identification_metadata },
2686 { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x18,0x00 }, mxf_read_content_storage, 0, AnyType },
2687 { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x37,0x00 }, mxf_read_package, sizeof(MXFPackage), SourcePackage },
2688 { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x36,0x00 }, mxf_read_package, sizeof(MXFPackage), MaterialPackage },
2689 { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x0f,0x00 }, mxf_read_sequence, sizeof(MXFSequence), Sequence },
2690 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x05,0x00 }, mxf_read_essence_group, sizeof(MXFEssenceGroup), EssenceGroup},
2691 { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x11,0x00 }, mxf_read_source_clip, sizeof(MXFStructuralComponent), SourceClip },
2692 { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x3f,0x00 }, mxf_read_tagged_value, sizeof(MXFTaggedValue), TaggedValue },
2693 { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x44,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), MultipleDescriptor },
2694 { { 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 */
2695 { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x28,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* CDCI */
2696 { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x29,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* RGBA */
2697 { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* Wave */
2698 { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* AES3 */
2699 { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* MPEG2VideoDescriptor */
2700 { { 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 */
2701 { { 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 */
2702 { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x5e,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* MPEG2AudioDescriptor */
2703 { { 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 */
2704 { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x3A,0x00 }, mxf_read_track, sizeof(MXFTrack), Track }, /* Static Track */
2705 { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x3B,0x00 }, mxf_read_track, sizeof(MXFTrack), Track }, /* Generic Track */
2706 { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x14,0x00 }, mxf_read_timecode_component, sizeof(MXFTimecodeComponent), TimecodeComponent },
2707 { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x0c,0x00 }, mxf_read_pulldown_component, sizeof(MXFPulldownComponent), PulldownComponent },
2708 { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x04,0x01,0x02,0x02,0x00,0x00 }, mxf_read_cryptographic_context, sizeof(MXFCryptoContext), CryptoContext },
2709 { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x10,0x01,0x00 }, mxf_read_index_table_segment, sizeof(MXFIndexTableSegment), IndexTableSegment },
2710 { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x23,0x00 }, mxf_read_essence_container_data, sizeof(MXFEssenceContainerData), EssenceContainerData },
2711 { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, NULL, 0, AnyType },
2714 static int mxf_metadataset_init(MXFMetadataSet *ctx, enum MXFMetadataSetType type)
2718 case MultipleDescriptor:
2720 ((MXFDescriptor*)ctx)->pix_fmt = AV_PIX_FMT_NONE;
2721 ((MXFDescriptor*)ctx)->duration = AV_NOPTS_VALUE;
2729 static int mxf_read_local_tags(MXFContext *mxf, KLVPacket *klv, MXFMetadataReadFunc *read_child, int ctx_size, enum MXFMetadataSetType type)
2731 AVIOContext *pb = mxf->fc->pb;
2732 MXFMetadataSet *ctx = ctx_size ? av_mallocz(ctx_size) : mxf;
2733 uint64_t klv_end = avio_tell(pb) + klv->length;
2736 return AVERROR(ENOMEM);
2738 mxf_metadataset_init(ctx, type);
2739 while (avio_tell(pb) + 4 < klv_end && !avio_feof(pb)) {
2741 int tag = avio_rb16(pb);
2742 int size = avio_rb16(pb); /* KLV specified by 0x53 */
2743 uint64_t next = avio_tell(pb) + size;
2746 av_log(mxf->fc, AV_LOG_TRACE, "local tag %#04x size %d\n", tag, size);
2747 if (!size) { /* ignore empty tag, needed for some files with empty UMID tag */
2748 av_log(mxf->fc, AV_LOG_ERROR, "local tag %#04x with 0 size\n", tag);
2751 if (tag > 0x7FFF) { /* dynamic tag */
2753 for (i = 0; i < mxf->local_tags_count; i++) {
2754 int local_tag = AV_RB16(mxf->local_tags+i*18);
2755 if (local_tag == tag) {
2756 memcpy(uid, mxf->local_tags+i*18+2, 16);
2757 av_log(mxf->fc, AV_LOG_TRACE, "local tag %#04x\n", local_tag);
2758 PRINT_KEY(mxf->fc, "uid", uid);
2762 if (ctx_size && tag == 0x3C0A) {
2763 avio_read(pb, ctx->uid, 16);
2764 } else if ((ret = read_child(ctx, pb, tag, size, uid, -1)) < 0) {
2766 mxf_free_metadataset(&ctx, 1);
2770 /* Accept the 64k local set limit being exceeded (Avid). Don't accept
2771 * it extending past the end of the KLV though (zzuf5.mxf). */
2772 if (avio_tell(pb) > klv_end) {
2774 mxf_free_metadataset(&ctx, 1);
2777 av_log(mxf->fc, AV_LOG_ERROR,
2778 "local tag %#04x extends past end of local set @ %#"PRIx64"\n",
2780 return AVERROR_INVALIDDATA;
2781 } else if (avio_tell(pb) <= next) /* only seek forward, else this can loop for a long time */
2782 avio_seek(pb, next, SEEK_SET);
2784 return ctx_size ? mxf_add_metadata_set(mxf, &ctx) : 0;
2788 * Matches any partition pack key, in other words:
2792 * @return non-zero if the key is a partition pack key, zero otherwise
2794 static int mxf_is_partition_pack_key(UID key)
2796 //NOTE: this is a little lax since it doesn't constraint key[14]
2797 return !memcmp(key, mxf_header_partition_pack_key, 13) &&
2798 key[13] >= 2 && key[13] <= 4;
2802 * Parses a metadata KLV
2803 * @return <0 on error, 0 otherwise
2805 static int mxf_parse_klv(MXFContext *mxf, KLVPacket klv, MXFMetadataReadFunc *read,
2806 int ctx_size, enum MXFMetadataSetType type)
2808 AVFormatContext *s = mxf->fc;
2810 if (klv.key[5] == 0x53) {
2811 res = mxf_read_local_tags(mxf, &klv, read, ctx_size, type);
2813 uint64_t next = avio_tell(s->pb) + klv.length;
2814 res = read(mxf, s->pb, 0, klv.length, klv.key, klv.offset);
2816 /* only seek forward, else this can loop for a long time */
2817 if (avio_tell(s->pb) > next) {
2818 av_log(s, AV_LOG_ERROR, "read past end of KLV @ %#"PRIx64"\n",
2820 return AVERROR_INVALIDDATA;
2823 avio_seek(s->pb, next, SEEK_SET);
2826 av_log(s, AV_LOG_ERROR, "error reading header metadata\n");
2833 * Seeks to the previous partition and parses it, if possible
2834 * @return <= 0 if we should stop parsing, > 0 if we should keep going
2836 static int mxf_seek_to_previous_partition(MXFContext *mxf)
2838 AVIOContext *pb = mxf->fc->pb;
2840 int64_t current_partition_ofs;
2843 if (!mxf->current_partition ||
2844 mxf->run_in + mxf->current_partition->previous_partition <= mxf->last_forward_tell)
2845 return 0; /* we've parsed all partitions */
2847 /* seek to previous partition */
2848 current_partition_ofs = mxf->current_partition->pack_ofs; //includes run-in
2849 avio_seek(pb, mxf->run_in + mxf->current_partition->previous_partition, SEEK_SET);
2850 mxf->current_partition = NULL;
2852 av_log(mxf->fc, AV_LOG_TRACE, "seeking to previous partition\n");
2854 /* Make sure this is actually a PartitionPack, and if so parse it.
2857 if ((ret = klv_read_packet(&klv, pb)) < 0) {
2858 av_log(mxf->fc, AV_LOG_ERROR, "failed to read PartitionPack KLV\n");
2862 if (!mxf_is_partition_pack_key(klv.key)) {
2863 av_log(mxf->fc, AV_LOG_ERROR, "PreviousPartition @ %" PRIx64 " isn't a PartitionPack\n", klv.offset);
2864 return AVERROR_INVALIDDATA;
2867 /* We can't just check ofs >= current_partition_ofs because PreviousPartition
2868 * can point to just before the current partition, causing klv_read_packet()
2869 * to sync back up to it. See deadlock3.mxf
2871 if (klv.offset >= current_partition_ofs) {
2872 av_log(mxf->fc, AV_LOG_ERROR, "PreviousPartition for PartitionPack @ %"
2873 PRIx64 " indirectly points to itself\n", current_partition_ofs);
2874 return AVERROR_INVALIDDATA;
2877 if ((ret = mxf_parse_klv(mxf, klv, mxf_read_partition_pack, 0, 0)) < 0)
2884 * Called when essence is encountered
2885 * @return <= 0 if we should stop parsing, > 0 if we should keep going
2887 static int mxf_parse_handle_essence(MXFContext *mxf)
2889 AVIOContext *pb = mxf->fc->pb;
2892 if (mxf->parsing_backward) {
2893 return mxf_seek_to_previous_partition(mxf);
2895 if (!mxf->footer_partition) {
2896 av_log(mxf->fc, AV_LOG_TRACE, "no FooterPartition\n");
2900 av_log(mxf->fc, AV_LOG_TRACE, "seeking to FooterPartition\n");
2902 /* remember where we were so we don't end up seeking further back than this */
2903 mxf->last_forward_tell = avio_tell(pb);
2905 if (!(pb->seekable & AVIO_SEEKABLE_NORMAL)) {
2906 av_log(mxf->fc, AV_LOG_INFO, "file is not seekable - not parsing FooterPartition\n");
2910 /* seek to FooterPartition and parse backward */
2911 if ((ret = avio_seek(pb, mxf->run_in + mxf->footer_partition, SEEK_SET)) < 0) {
2912 av_log(mxf->fc, AV_LOG_ERROR,
2913 "failed to seek to FooterPartition @ 0x%" PRIx64
2914 " (%"PRId64") - partial file?\n",
2915 mxf->run_in + mxf->footer_partition, ret);
2919 mxf->current_partition = NULL;
2920 mxf->parsing_backward = 1;
2927 * Called when the next partition or EOF is encountered
2928 * @return <= 0 if we should stop parsing, > 0 if we should keep going
2930 static int mxf_parse_handle_partition_or_eof(MXFContext *mxf)
2932 return mxf->parsing_backward ? mxf_seek_to_previous_partition(mxf) : 1;
2935 static MXFWrappingScheme mxf_get_wrapping_by_body_sid(AVFormatContext *s, int body_sid)
2937 for (int i = 0; i < s->nb_streams; i++) {
2938 MXFTrack *track = s->streams[i]->priv_data;
2939 if (track && track->body_sid == body_sid && track->wrapping != UnknownWrapped)
2940 return track->wrapping;
2942 return UnknownWrapped;
2946 * Figures out the proper offset and length of the essence container in each partition
2948 static void mxf_compute_essence_containers(AVFormatContext *s)
2950 MXFContext *mxf = s->priv_data;
2953 for (x = 0; x < mxf->partitions_count; x++) {
2954 MXFPartition *p = &mxf->partitions[x];
2955 MXFWrappingScheme wrapping;
2958 continue; /* BodySID == 0 -> no essence */
2960 /* for clip wrapped essences we point essence_offset after the KL (usually klv.offset + 20 or 25)
2961 * otherwise we point essence_offset at the key of the first essence KLV.
2964 wrapping = (mxf->op == OPAtom) ? ClipWrapped : mxf_get_wrapping_by_body_sid(s, p->body_sid);
2966 if (wrapping == ClipWrapped) {
2967 p->essence_offset = p->first_essence_klv.next_klv - p->first_essence_klv.length;
2968 p->essence_length = p->first_essence_klv.length;
2970 p->essence_offset = p->first_essence_klv.offset;
2972 /* essence container spans to the next partition */
2973 if (x < mxf->partitions_count - 1)
2974 p->essence_length = mxf->partitions[x+1].this_partition - p->essence_offset;
2976 if (p->essence_length < 0) {
2977 /* next ThisPartition < essence_offset */
2978 p->essence_length = 0;
2979 av_log(mxf->fc, AV_LOG_ERROR,
2980 "partition %i: bad ThisPartition = %"PRIX64"\n",
2981 x+1, mxf->partitions[x+1].this_partition);
2987 static int is_pcm(enum AVCodecID codec_id)
2989 /* we only care about "normal" PCM codecs until we get samples */
2990 return codec_id >= AV_CODEC_ID_PCM_S16LE && codec_id < AV_CODEC_ID_PCM_S24DAUD;
2993 static MXFIndexTable *mxf_find_index_table(MXFContext *mxf, int index_sid)
2996 for (i = 0; i < mxf->nb_index_tables; i++)
2997 if (mxf->index_tables[i].index_sid == index_sid)
2998 return &mxf->index_tables[i];
3003 * Deal with the case where for some audio atoms EditUnitByteCount is
3004 * very small (2, 4..). In those cases we should read more than one
3005 * sample per call to mxf_read_packet().
3007 static void mxf_compute_edit_units_per_packet(MXFContext *mxf, AVStream *st)
3009 MXFTrack *track = st->priv_data;
3014 track->edit_units_per_packet = 1;
3015 if (track->wrapping != ClipWrapped)
3018 t = mxf_find_index_table(mxf, track->index_sid);
3020 /* expect PCM with exactly one index table segment and a small (< 32) EUBC */
3021 if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO ||
3022 !is_pcm(st->codecpar->codec_id) ||
3024 t->nb_segments != 1 ||
3025 t->segments[0]->edit_unit_byte_count >= 32)
3028 /* arbitrarily default to 48 kHz PAL audio frame size */
3029 /* TODO: We could compute this from the ratio between the audio
3030 * and video edit rates for 48 kHz NTSC we could use the
3031 * 1802-1802-1802-1802-1801 pattern. */
3032 track->edit_units_per_packet = FFMAX(1, track->edit_rate.num / track->edit_rate.den / 25);
3036 * Deal with the case where ClipWrapped essences does not have any IndexTableSegments.
3038 static int mxf_handle_missing_index_segment(MXFContext *mxf, AVStream *st)
3040 MXFTrack *track = st->priv_data;
3041 MXFIndexTableSegment *segment = NULL;
3042 MXFPartition *p = NULL;
3043 int essence_partition_count = 0;
3044 int edit_unit_byte_count = 0;
3047 if (!track || track->wrapping != ClipWrapped)
3050 /* check if track already has an IndexTableSegment */
3051 for (i = 0; i < mxf->metadata_sets_count; i++) {
3052 if (mxf->metadata_sets[i]->type == IndexTableSegment) {
3053 MXFIndexTableSegment *s = (MXFIndexTableSegment*)mxf->metadata_sets[i];
3054 if (s->body_sid == track->body_sid)
3059 /* find the essence partition */
3060 for (i = 0; i < mxf->partitions_count; i++) {
3061 /* BodySID == 0 -> no essence */
3062 if (mxf->partitions[i].body_sid != track->body_sid)
3065 p = &mxf->partitions[i];
3066 essence_partition_count++;
3069 /* only handle files with a single essence partition */
3070 if (essence_partition_count != 1)
3073 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && is_pcm(st->codecpar->codec_id)) {
3074 edit_unit_byte_count = (av_get_bits_per_sample(st->codecpar->codec_id) * st->codecpar->channels) >> 3;
3075 } else if (st->duration > 0 && p->first_essence_klv.length > 0 && p->first_essence_klv.length % st->duration == 0) {
3076 edit_unit_byte_count = p->first_essence_klv.length / st->duration;
3079 if (edit_unit_byte_count <= 0)
3082 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);
3084 if (!(segment = av_mallocz(sizeof(*segment))))
3085 return AVERROR(ENOMEM);
3087 if ((ret = mxf_add_metadata_set(mxf, (MXFMetadataSet**)&segment)))
3090 /* Make sure we have nonzero unique index_sid, body_sid will be ok, because
3091 * using the same SID for index is forbidden in MXF. */
3092 if (!track->index_sid)
3093 track->index_sid = track->body_sid;
3095 segment->type = IndexTableSegment;
3096 /* stream will be treated as small EditUnitByteCount */
3097 segment->edit_unit_byte_count = edit_unit_byte_count;
3098 segment->index_start_position = 0;
3099 segment->index_duration = st->duration;
3100 segment->index_edit_rate = av_inv_q(st->time_base);
3101 segment->index_sid = track->index_sid;
3102 segment->body_sid = p->body_sid;
3106 static void mxf_read_random_index_pack(AVFormatContext *s)
3108 MXFContext *mxf = s->priv_data;
3110 int64_t file_size, max_rip_length, min_rip_length;
3113 if (!(s->pb->seekable & AVIO_SEEKABLE_NORMAL))
3116 file_size = avio_size(s->pb);
3118 /* S377m says to check the RIP length for "silly" values, without defining "silly".
3119 * The limit below assumes a file with nothing but partition packs and a RIP.
3120 * Before changing this, consider that a muxer may place each sample in its own partition.
3122 * 105 is the size of the smallest possible PartitionPack
3123 * 12 is the size of each RIP entry
3124 * 28 is the size of the RIP header and footer, assuming an 8-byte BER
3126 max_rip_length = ((file_size - mxf->run_in) / 105) * 12 + 28;
3127 max_rip_length = FFMIN(max_rip_length, INT_MAX); //2 GiB and up is also silly
3129 /* We're only interested in RIPs with at least two entries.. */
3130 min_rip_length = 16+1+24+4;
3132 /* See S377m section 11 */
3133 avio_seek(s->pb, file_size - 4, SEEK_SET);
3134 length = avio_rb32(s->pb);
3136 if (length < min_rip_length || length > max_rip_length)
3138 avio_seek(s->pb, file_size - length, SEEK_SET);
3139 if (klv_read_packet(&klv, s->pb) < 0 ||
3140 !IS_KLV_KEY(klv.key, mxf_random_index_pack_key))
3142 if (klv.next_klv != file_size || klv.length <= 4 || (klv.length - 4) % 12) {
3143 av_log(s, AV_LOG_WARNING, "Invalid RIP KLV length\n");
3147 avio_skip(s->pb, klv.length - 12);
3148 mxf->footer_partition = avio_rb64(s->pb);
3151 if (mxf->run_in + mxf->footer_partition >= file_size) {
3152 av_log(s, AV_LOG_WARNING, "bad FooterPartition in RIP - ignoring\n");
3153 mxf->footer_partition = 0;
3157 avio_seek(s->pb, mxf->run_in, SEEK_SET);
3160 static int mxf_read_header(AVFormatContext *s)
3162 MXFContext *mxf = s->priv_data;
3164 int64_t essence_offset = 0;
3167 mxf->last_forward_tell = INT64_MAX;
3169 if (!mxf_read_sync(s->pb, mxf_header_partition_pack_key, 14)) {
3170 av_log(s, AV_LOG_ERROR, "could not find header partition pack key\n");
3171 //goto fail should not be needed as no metadata sets will have been parsed yet
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 ret = AVERROR_INVALIDDATA;
3206 if (!mxf->current_partition->first_essence_klv.offset)
3207 mxf->current_partition->first_essence_klv = klv;
3209 if (!essence_offset)
3210 essence_offset = klv.offset;
3212 /* seek to footer, previous partition or stop */
3213 if (mxf_parse_handle_essence(mxf) <= 0)
3216 } else if (mxf_is_partition_pack_key(klv.key) && mxf->current_partition) {
3217 /* next partition pack - keep going, seek to previous partition or stop */
3218 if(mxf_parse_handle_partition_or_eof(mxf) <= 0)
3220 else if (mxf->parsing_backward)
3222 /* we're still parsing forward. proceed to parsing this partition pack */
3225 for (metadata = mxf_metadata_read_table; metadata->read; metadata++) {
3226 if (IS_KLV_KEY(klv.key, metadata->key)) {
3227 if ((ret = mxf_parse_klv(mxf, klv, metadata->read, metadata->ctx_size, metadata->type)) < 0)
3232 if (!metadata->read) {
3233 av_log(s, AV_LOG_VERBOSE, "Dark key " PRIxUID "\n",
3235 avio_skip(s->pb, klv.length);
3238 /* FIXME avoid seek */
3239 if (!essence_offset) {
3240 av_log(s, AV_LOG_ERROR, "no essence\n");
3241 ret = AVERROR_INVALIDDATA;
3244 avio_seek(s->pb, essence_offset, SEEK_SET);
3246 /* we need to do this before computing the index tables
3247 * to be able to fill in zero IndexDurations with st->duration */
3248 if ((ret = mxf_parse_structural_metadata(mxf)) < 0)
3251 for (int i = 0; i < s->nb_streams; i++)
3252 mxf_handle_missing_index_segment(mxf, s->streams[i]);
3254 if ((ret = mxf_compute_index_tables(mxf)) < 0)
3257 if (mxf->nb_index_tables > 1) {
3258 /* TODO: look up which IndexSID to use via EssenceContainerData */
3259 av_log(mxf->fc, AV_LOG_INFO, "got %i index tables - only the first one (IndexSID %i) will be used\n",
3260 mxf->nb_index_tables, mxf->index_tables[0].index_sid);
3261 } else if (mxf->nb_index_tables == 0 && mxf->op == OPAtom && (s->error_recognition & AV_EF_EXPLODE)) {
3262 av_log(mxf->fc, AV_LOG_ERROR, "cannot demux OPAtom without an index\n");
3263 ret = AVERROR_INVALIDDATA;
3267 mxf_compute_essence_containers(s);
3269 for (int i = 0; i < s->nb_streams; i++)
3270 mxf_compute_edit_units_per_packet(mxf, s->streams[i]);
3279 /* Get the edit unit of the next packet from current_offset in a track. The returned edit unit can be original_duration as well! */
3280 static int mxf_get_next_track_edit_unit(MXFContext *mxf, MXFTrack *track, int64_t current_offset, int64_t *edit_unit_out)
3282 int64_t a, b, m, offset;
3283 MXFIndexTable *t = mxf_find_index_table(mxf, track->index_sid);
3285 if (!t || track->original_duration <= 0)
3289 b = track->original_duration;
3293 if (mxf_edit_unit_absolute_offset(mxf, t, m, track->edit_rate, NULL, &offset, NULL, 0) < 0)
3295 if (offset < current_offset)
3306 static int64_t mxf_compute_sample_count(MXFContext *mxf, AVStream *st,
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);
3313 // For non-audio sample_count equals current edit unit
3314 if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
3317 if ((sample_rate.num / sample_rate.den) == 48000) {
3318 return av_rescale_q(edit_unit, sample_rate, track->edit_rate);
3320 int remainder = (sample_rate.num * time_base.num) %
3321 (time_base.den * sample_rate.den);
3323 av_log(mxf->fc, AV_LOG_WARNING,
3324 "seeking detected on stream #%d with time base (%d/%d) and "
3325 "sample rate (%d/%d), audio pts won't be accurate.\n",
3326 st->index, time_base.num, time_base.den,
3327 sample_rate.num, sample_rate.den);
3328 return av_rescale_q(edit_unit, sample_rate, track->edit_rate);
3333 * Make sure track->sample_count is correct based on what offset we're currently at.
3334 * Also determine the next edit unit (or packet) offset.
3335 * @return next_ofs if OK, <0 on error
3337 static int64_t mxf_set_current_edit_unit(MXFContext *mxf, AVStream *st, int64_t current_offset, int resync)
3339 int64_t next_ofs = -1;
3340 MXFTrack *track = st->priv_data;
3341 int64_t edit_unit = av_rescale_q(track->sample_count, st->time_base, av_inv_q(track->edit_rate));
3342 int64_t new_edit_unit;
3343 MXFIndexTable *t = mxf_find_index_table(mxf, track->index_sid);
3345 if (!t || track->wrapping == UnknownWrapped)
3348 if (mxf_edit_unit_absolute_offset(mxf, t, edit_unit + track->edit_units_per_packet, track->edit_rate, NULL, &next_ofs, NULL, 0) < 0 &&
3349 (next_ofs = mxf_essence_container_end(mxf, t->body_sid)) <= 0) {
3350 av_log(mxf->fc, AV_LOG_ERROR, "unable to compute the size of the last packet\n");
3354 /* check if the next edit unit offset (next_ofs) starts ahead of current_offset */
3355 if (next_ofs > current_offset)
3359 av_log(mxf->fc, AV_LOG_ERROR, "cannot find current edit unit for stream %d, invalid index?\n", st->index);
3363 if (mxf_get_next_track_edit_unit(mxf, track, current_offset + 1, &new_edit_unit) < 0 || new_edit_unit <= 0) {
3364 av_log(mxf->fc, AV_LOG_ERROR, "failed to find next track edit unit in stream %d\n", st->index);
3369 track->sample_count = mxf_compute_sample_count(mxf, st, new_edit_unit);
3370 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);
3372 return mxf_set_current_edit_unit(mxf, st, current_offset, 0);
3375 static int mxf_set_audio_pts(MXFContext *mxf, AVCodecParameters *par,
3378 AVStream *st = mxf->fc->streams[pkt->stream_index];
3379 MXFTrack *track = st->priv_data;
3380 int64_t bits_per_sample = par->bits_per_coded_sample;
3382 if (!bits_per_sample)
3383 bits_per_sample = av_get_bits_per_sample(par->codec_id);
3385 pkt->pts = track->sample_count;
3387 if ( par->channels <= 0
3388 || bits_per_sample <= 0
3389 || par->channels * (int64_t)bits_per_sample < 8)
3390 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);
3392 track->sample_count += pkt->size / (par->channels * (int64_t)bits_per_sample / 8);
3397 static int mxf_set_pts(MXFContext *mxf, AVStream *st, AVPacket *pkt)
3399 AVCodecParameters *par = st->codecpar;
3400 MXFTrack *track = st->priv_data;
3402 if (par->codec_type == AVMEDIA_TYPE_VIDEO) {
3403 /* see if we have an index table to derive timestamps from */
3404 MXFIndexTable *t = mxf_find_index_table(mxf, track->index_sid);
3406 if (t && track->sample_count < t->nb_ptses) {
3407 pkt->dts = track->sample_count + t->first_dts;
3408 pkt->pts = t->ptses[track->sample_count];
3409 } else if (track->intra_only) {
3410 /* intra-only -> PTS = EditUnit.
3411 * let utils.c figure out DTS since it can be < PTS if low_delay = 0 (Sony IMX30) */
3412 pkt->pts = track->sample_count;
3414 track->sample_count++;
3415 } else if (par->codec_type == AVMEDIA_TYPE_AUDIO) {
3416 int ret = mxf_set_audio_pts(mxf, par, pkt);
3420 pkt->dts = pkt->pts = track->sample_count;
3422 track->sample_count++;
3427 static int mxf_read_packet(AVFormatContext *s, AVPacket *pkt)
3430 MXFContext *mxf = s->priv_data;
3434 int64_t max_data_size;
3435 int64_t pos = avio_tell(s->pb);
3437 if (pos < mxf->current_klv_data.next_klv - mxf->current_klv_data.length || pos >= mxf->current_klv_data.next_klv) {
3438 mxf->current_klv_data = (KLVPacket){{0}};
3439 ret = klv_read_packet(&klv, s->pb);
3442 max_data_size = klv.length;
3443 pos = klv.next_klv - klv.length;
3444 PRINT_KEY(s, "read packet", klv.key);
3445 av_log(s, AV_LOG_TRACE, "size %"PRIu64" offset %#"PRIx64"\n", klv.length, klv.offset);
3446 if (IS_KLV_KEY(klv.key, mxf_encrypted_triplet_key)) {
3447 ret = mxf_decrypt_triplet(s, pkt, &klv);
3449 av_log(s, AV_LOG_ERROR, "invalid encoded triplet\n");
3455 klv = mxf->current_klv_data;
3456 max_data_size = klv.next_klv - pos;
3458 if (IS_KLV_KEY(klv.key, mxf_essence_element_key) ||
3459 IS_KLV_KEY(klv.key, mxf_canopus_essence_element_key) ||
3460 IS_KLV_KEY(klv.key, mxf_avid_essence_element_key)) {
3461 int body_sid = find_body_sid_by_absolute_offset(mxf, klv.offset);
3462 int index = mxf_get_stream_index(s, &klv, body_sid);
3468 av_log(s, AV_LOG_ERROR,
3469 "error getting stream index %"PRIu32"\n",
3470 AV_RB32(klv.key + 12));
3474 st = s->streams[index];
3475 track = st->priv_data;
3477 if (s->streams[index]->discard == AVDISCARD_ALL)
3480 next_ofs = mxf_set_current_edit_unit(mxf, st, pos, 1);
3482 if (track->wrapping != FrameWrapped) {
3485 if (next_ofs <= 0) {
3486 // If we have no way to packetize the data, then return it in chunks...
3487 if (klv.next_klv - klv.length == pos && max_data_size > MXF_MAX_CHUNK_SIZE) {
3488 st->need_parsing = AVSTREAM_PARSE_FULL;
3489 avpriv_request_sample(s, "Huge KLV without proper index in non-frame wrapped essence");
3491 size = FFMIN(max_data_size, MXF_MAX_CHUNK_SIZE);
3493 if ((size = next_ofs - pos) <= 0) {
3494 av_log(s, AV_LOG_ERROR, "bad size: %"PRId64"\n", size);
3495 mxf->current_klv_data = (KLVPacket){{0}};
3496 return AVERROR_INVALIDDATA;
3498 // We must not overread, because the next edit unit might be in another KLV
3499 if (size > max_data_size)
3500 size = max_data_size;
3503 mxf->current_klv_data = klv;
3506 klv.next_klv = klv.offset + klv.length;
3509 /* check for 8 channels AES3 element */
3510 if (klv.key[12] == 0x06 && klv.key[13] == 0x01 && klv.key[14] == 0x10) {
3511 ret = mxf_get_d10_aes3_packet(s->pb, s->streams[index],
3514 av_log(s, AV_LOG_ERROR, "error reading D-10 aes3 frame\n");
3515 mxf->current_klv_data = (KLVPacket){{0}};
3518 } else if (mxf->eia608_extract &&
3519 s->streams[index]->codecpar->codec_id == AV_CODEC_ID_EIA_608) {
3520 ret = mxf_get_eia608_packet(s, s->streams[index], pkt, klv.length);
3522 mxf->current_klv_data = (KLVPacket){{0}};
3526 ret = av_get_packet(s->pb, pkt, klv.length);
3528 mxf->current_klv_data = (KLVPacket){{0}};
3532 pkt->stream_index = index;
3533 pkt->pos = klv.offset;
3535 ret = mxf_set_pts(mxf, st, pkt);
3537 mxf->current_klv_data = (KLVPacket){{0}};
3541 /* seek for truncated packets */
3542 avio_seek(s->pb, klv.next_klv, SEEK_SET);
3547 avio_skip(s->pb, max_data_size);
3548 mxf->current_klv_data = (KLVPacket){{0}};
3551 return avio_feof(s->pb) ? AVERROR_EOF : ret;
3554 static int mxf_read_close(AVFormatContext *s)
3556 MXFContext *mxf = s->priv_data;
3559 av_freep(&mxf->packages_refs);
3560 av_freep(&mxf->essence_container_data_refs);
3562 for (i = 0; i < s->nb_streams; i++)
3563 s->streams[i]->priv_data = NULL;
3565 for (i = 0; i < mxf->metadata_sets_count; i++) {
3566 mxf_free_metadataset(mxf->metadata_sets + i, 1);
3568 mxf->metadata_sets_count = 0;
3569 av_freep(&mxf->partitions);
3570 av_freep(&mxf->metadata_sets);
3571 av_freep(&mxf->aesc);
3572 av_freep(&mxf->local_tags);
3574 if (mxf->index_tables) {
3575 for (i = 0; i < mxf->nb_index_tables; i++) {
3576 av_freep(&mxf->index_tables[i].segments);
3577 av_freep(&mxf->index_tables[i].ptses);
3578 av_freep(&mxf->index_tables[i].fake_index);
3579 av_freep(&mxf->index_tables[i].offsets);
3582 av_freep(&mxf->index_tables);
3587 static int mxf_probe(const AVProbeData *p) {
3588 const uint8_t *bufp = p->buf;
3589 const uint8_t *end = p->buf + p->buf_size;
3591 if (p->buf_size < sizeof(mxf_header_partition_pack_key))
3594 /* Must skip Run-In Sequence and search for MXF header partition pack key SMPTE 377M 5.5 */
3595 end -= sizeof(mxf_header_partition_pack_key);
3597 for (; bufp < end;) {
3598 if (!((bufp[13] - 1) & 0xF2)){
3599 if (AV_RN32(bufp ) == AV_RN32(mxf_header_partition_pack_key ) &&
3600 AV_RN32(bufp+ 4) == AV_RN32(mxf_header_partition_pack_key+ 4) &&
3601 AV_RN32(bufp+ 8) == AV_RN32(mxf_header_partition_pack_key+ 8) &&
3602 AV_RN16(bufp+12) == AV_RN16(mxf_header_partition_pack_key+12))
3603 return AVPROBE_SCORE_MAX;
3612 /* rudimentary byte seek */
3613 /* XXX: use MXF Index */
3614 static int mxf_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
3616 AVStream *st = s->streams[stream_index];
3618 MXFContext* mxf = s->priv_data;
3622 MXFTrack *source_track = st->priv_data;
3627 /* if audio then truncate sample_time to EditRate */
3628 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
3629 sample_time = av_rescale_q(sample_time, st->time_base,
3630 av_inv_q(source_track->edit_rate));
3632 if (mxf->nb_index_tables <= 0) {
3634 return AVERROR_INVALIDDATA;
3635 if (sample_time < 0)
3637 seconds = av_rescale(sample_time, st->time_base.num, st->time_base.den);
3639 seekpos = avio_seek(s->pb, (s->bit_rate * seconds) >> 3, SEEK_SET);
3643 ff_update_cur_dts(s, st, sample_time);
3644 mxf->current_klv_data = (KLVPacket){{0}};
3646 MXFPartition *partition;
3648 t = &mxf->index_tables[0];
3649 if (t->index_sid != source_track->index_sid) {
3650 /* If the first index table does not belong to the stream, then find a stream which does belong to the index table */
3651 for (i = 0; i < s->nb_streams; i++) {
3652 MXFTrack *new_source_track = s->streams[i]->priv_data;
3653 if (new_source_track && new_source_track->index_sid == t->index_sid) {
3654 sample_time = av_rescale_q(sample_time, new_source_track->edit_rate, source_track->edit_rate);
3655 source_track = new_source_track;
3660 if (i == s->nb_streams)
3661 return AVERROR_INVALIDDATA;
3664 /* clamp above zero, else ff_index_search_timestamp() returns negative
3665 * this also means we allow seeking before the start */
3666 sample_time = FFMAX(sample_time, 0);
3668 if (t->fake_index) {
3669 /* The first frames may not be keyframes in presentation order, so
3670 * we have to advance the target to be able to find the first
3671 * keyframe backwards... */
3672 if (!(flags & AVSEEK_FLAG_ANY) &&
3673 (flags & AVSEEK_FLAG_BACKWARD) &&
3674 t->ptses[0] != AV_NOPTS_VALUE &&
3675 sample_time < t->ptses[0] &&
3676 (t->fake_index[t->ptses[0]].flags & AVINDEX_KEYFRAME))
3677 sample_time = t->ptses[0];
3679 /* behave as if we have a proper index */
3680 if ((sample_time = ff_index_search_timestamp(t->fake_index, t->nb_ptses, sample_time, flags)) < 0)
3682 /* get the stored order index from the display order index */
3683 sample_time += t->offsets[sample_time];
3685 /* no IndexEntryArray (one or more CBR segments)
3686 * make sure we don't seek past the end */
3687 sample_time = FFMIN(sample_time, source_track->original_duration - 1);
3690 if (source_track->wrapping == UnknownWrapped)
3691 av_log(mxf->fc, AV_LOG_WARNING, "attempted seek in an UnknownWrapped essence\n");
3693 if ((ret = mxf_edit_unit_absolute_offset(mxf, t, sample_time, source_track->edit_rate, &sample_time, &seekpos, &partition, 1)) < 0)
3696 ff_update_cur_dts(s, st, sample_time);
3697 if (source_track->wrapping == ClipWrapped) {
3698 KLVPacket klv = partition->first_essence_klv;
3699 if (seekpos < klv.next_klv - klv.length || seekpos >= klv.next_klv) {
3700 av_log(mxf->fc, AV_LOG_ERROR, "attempted seek out of clip wrapped KLV\n");
3701 return AVERROR_INVALIDDATA;
3703 mxf->current_klv_data = klv;
3705 mxf->current_klv_data = (KLVPacket){{0}};
3707 avio_seek(s->pb, seekpos, SEEK_SET);
3710 // Update all tracks sample count
3711 for (i = 0; i < s->nb_streams; i++) {
3712 AVStream *cur_st = s->streams[i];
3713 MXFTrack *cur_track = cur_st->priv_data;
3715 int64_t track_edit_unit = sample_time;
3717 mxf_get_next_track_edit_unit(mxf, cur_track, seekpos, &track_edit_unit);
3718 cur_track->sample_count = mxf_compute_sample_count(mxf, cur_st, track_edit_unit);
3724 static const AVOption options[] = {
3725 { "eia608_extract", "extract eia 608 captions from s436m track",
3726 offsetof(MXFContext, eia608_extract), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1,
3727 AV_OPT_FLAG_DECODING_PARAM },
3731 static const AVClass demuxer_class = {
3732 .class_name = "mxf",
3733 .item_name = av_default_item_name,
3735 .version = LIBAVUTIL_VERSION_INT,
3736 .category = AV_CLASS_CATEGORY_DEMUXER,
3739 AVInputFormat ff_mxf_demuxer = {
3741 .long_name = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format)"),
3742 .flags = AVFMT_SEEK_TO_PTS,
3743 .priv_data_size = sizeof(MXFContext),
3744 .read_probe = mxf_probe,
3745 .read_header = mxf_read_header,
3746 .read_packet = mxf_read_packet,
3747 .read_close = mxf_read_close,
3748 .read_seek = mxf_read_seek,
3749 .priv_class = &demuxer_class,