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1 | /* |
2 | * MXF demuxer. | |
3 | * Copyright (c) 2006 SmartJog S.A., Baptiste Coudurier <baptiste dot coudurier at smartjog dot com> | |
4 | * | |
5 | * This file is part of FFmpeg. | |
6 | * | |
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. | |
11 | * | |
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. | |
16 | * | |
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 | |
20 | */ | |
21 | ||
22 | /* | |
23 | * References | |
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 | |
31 | * | |
32 | * Principle | |
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. | |
38 | * | |
39 | * Metadata reading functions read Local Tags, get InstanceUID(0x3C0A) then add MetaDataSet to MXFContext. | |
40 | * Metadata parsing resolves Strong References to objects. | |
41 | * | |
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 | |
44 | */ | |
45 | ||
46 | #include <inttypes.h> | |
47 | ||
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/timecode.h" | |
54 | #include "avformat.h" | |
55 | #include "internal.h" | |
56 | #include "mxf.h" | |
57 | ||
58 | typedef enum { | |
59 | Header, | |
60 | BodyPartition, | |
61 | Footer | |
62 | } MXFPartitionType; | |
63 | ||
64 | typedef enum { | |
65 | OP1a = 1, | |
66 | OP1b, | |
67 | OP1c, | |
68 | OP2a, | |
69 | OP2b, | |
70 | OP2c, | |
71 | OP3a, | |
72 | OP3b, | |
73 | OP3c, | |
74 | OPAtom, | |
75 | OPSONYOpt, /* FATE sample, violates the spec in places */ | |
76 | } MXFOP; | |
77 | ||
78 | typedef struct { | |
79 | int closed; | |
80 | int complete; | |
81 | MXFPartitionType type; | |
82 | uint64_t previous_partition; | |
83 | int index_sid; | |
84 | int body_sid; | |
85 | int64_t this_partition; | |
86 | int64_t essence_offset; ///< absolute offset of essence | |
87 | int64_t essence_length; | |
88 | int32_t kag_size; | |
89 | int64_t header_byte_count; | |
90 | int64_t index_byte_count; | |
91 | int pack_length; | |
92 | } MXFPartition; | |
93 | ||
94 | typedef struct { | |
95 | UID uid; | |
96 | enum MXFMetadataSetType type; | |
97 | UID source_container_ul; | |
98 | } MXFCryptoContext; | |
99 | ||
100 | typedef struct { | |
101 | UID uid; | |
102 | enum MXFMetadataSetType type; | |
103 | UID source_package_uid; | |
104 | UID data_definition_ul; | |
105 | int64_t duration; | |
106 | int64_t start_position; | |
107 | int source_track_id; | |
108 | } MXFStructuralComponent; | |
109 | ||
110 | typedef struct { | |
111 | UID uid; | |
112 | enum MXFMetadataSetType type; | |
113 | UID data_definition_ul; | |
114 | UID *structural_components_refs; | |
115 | int structural_components_count; | |
116 | int64_t duration; | |
117 | uint8_t origin; | |
118 | } MXFSequence; | |
119 | ||
120 | typedef struct { | |
121 | UID uid; | |
122 | enum MXFMetadataSetType type; | |
123 | int drop_frame; | |
124 | int start_frame; | |
125 | struct AVRational rate; | |
126 | AVTimecode tc; | |
127 | } MXFTimecodeComponent; | |
128 | ||
129 | typedef struct { | |
130 | UID uid; | |
131 | enum MXFMetadataSetType type; | |
132 | MXFSequence *sequence; /* mandatory, and only one */ | |
133 | UID sequence_ref; | |
134 | int track_id; | |
135 | uint8_t track_number[4]; | |
136 | AVRational edit_rate; | |
137 | int intra_only; | |
138 | uint64_t sample_count; | |
139 | int64_t original_duration; /* st->duration in SampleRate/EditRate units */ | |
140 | } MXFTrack; | |
141 | ||
142 | typedef struct { | |
143 | UID uid; | |
144 | enum MXFMetadataSetType type; | |
145 | UID essence_container_ul; | |
146 | UID essence_codec_ul; | |
147 | AVRational sample_rate; | |
148 | AVRational aspect_ratio; | |
149 | int width; | |
150 | int height; /* Field height, not frame height */ | |
151 | int frame_layout; /* See MXFFrameLayout enum */ | |
152 | #define MXF_TFF 1 | |
153 | #define MXF_BFF 2 | |
154 | int field_dominance; | |
155 | int channels; | |
156 | int bits_per_sample; | |
157 | unsigned int component_depth; | |
158 | unsigned int horiz_subsampling; | |
159 | unsigned int vert_subsampling; | |
160 | UID *sub_descriptors_refs; | |
161 | int sub_descriptors_count; | |
162 | int linked_track_id; | |
163 | uint8_t *extradata; | |
164 | int extradata_size; | |
165 | enum AVPixelFormat pix_fmt; | |
166 | } MXFDescriptor; | |
167 | ||
168 | typedef struct { | |
169 | UID uid; | |
170 | enum MXFMetadataSetType type; | |
171 | int edit_unit_byte_count; | |
172 | int index_sid; | |
173 | int body_sid; | |
174 | AVRational index_edit_rate; | |
175 | uint64_t index_start_position; | |
176 | uint64_t index_duration; | |
177 | int8_t *temporal_offset_entries; | |
178 | int *flag_entries; | |
179 | uint64_t *stream_offset_entries; | |
180 | int nb_index_entries; | |
181 | } MXFIndexTableSegment; | |
182 | ||
183 | typedef struct { | |
184 | UID uid; | |
185 | enum MXFMetadataSetType type; | |
186 | UID package_uid; | |
187 | UID *tracks_refs; | |
188 | int tracks_count; | |
189 | MXFDescriptor *descriptor; /* only one */ | |
190 | UID descriptor_ref; | |
191 | } MXFPackage; | |
192 | ||
193 | typedef struct { | |
194 | UID uid; | |
195 | enum MXFMetadataSetType type; | |
196 | } MXFMetadataSet; | |
197 | ||
198 | /* decoded index table */ | |
199 | typedef struct { | |
200 | int index_sid; | |
201 | int body_sid; | |
202 | int nb_ptses; /* number of PTSes or total duration of index */ | |
203 | int64_t first_dts; /* DTS = EditUnit + first_dts */ | |
204 | int64_t *ptses; /* maps EditUnit -> PTS */ | |
205 | int nb_segments; | |
206 | MXFIndexTableSegment **segments; /* sorted by IndexStartPosition */ | |
207 | AVIndexEntry *fake_index; /* used for calling ff_index_search_timestamp() */ | |
208 | } MXFIndexTable; | |
209 | ||
210 | typedef struct { | |
211 | MXFPartition *partitions; | |
212 | unsigned partitions_count; | |
213 | MXFOP op; | |
214 | UID *packages_refs; | |
215 | int packages_count; | |
216 | MXFMetadataSet **metadata_sets; | |
217 | int metadata_sets_count; | |
218 | AVFormatContext *fc; | |
219 | struct AVAES *aesc; | |
220 | uint8_t *local_tags; | |
221 | int local_tags_count; | |
222 | uint64_t last_partition; | |
223 | uint64_t footer_partition; | |
224 | KLVPacket current_klv_data; | |
225 | int current_klv_index; | |
226 | int run_in; | |
227 | MXFPartition *current_partition; | |
228 | int parsing_backward; | |
229 | int64_t last_forward_tell; | |
230 | int last_forward_partition; | |
231 | int current_edit_unit; | |
232 | int nb_index_tables; | |
233 | MXFIndexTable *index_tables; | |
234 | int edit_units_per_packet; ///< how many edit units to read at a time (PCM, OPAtom) | |
235 | } MXFContext; | |
236 | ||
237 | enum MXFWrappingScheme { | |
238 | Frame, | |
239 | Clip, | |
240 | }; | |
241 | ||
242 | /* NOTE: klv_offset is not set (-1) for local keys */ | |
243 | typedef int MXFMetadataReadFunc(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset); | |
244 | ||
245 | typedef struct { | |
246 | const UID key; | |
247 | MXFMetadataReadFunc *read; | |
248 | int ctx_size; | |
249 | enum MXFMetadataSetType type; | |
250 | } MXFMetadataReadTableEntry; | |
251 | ||
252 | static int mxf_read_close(AVFormatContext *s); | |
253 | ||
254 | /* partial keys to match */ | |
255 | static const uint8_t mxf_header_partition_pack_key[] = { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02 }; | |
256 | static const uint8_t mxf_essence_element_key[] = { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01 }; | |
257 | static const uint8_t mxf_avid_essence_element_key[] = { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0e,0x04,0x03,0x01 }; | |
258 | static const uint8_t mxf_system_item_key[] = { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x03,0x01,0x04 }; | |
259 | static const uint8_t mxf_klv_key[] = { 0x06,0x0e,0x2b,0x34 }; | |
260 | /* complete keys to match */ | |
261 | 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 }; | |
262 | static const uint8_t mxf_encrypted_triplet_key[] = { 0x06,0x0e,0x2b,0x34,0x02,0x04,0x01,0x07,0x0d,0x01,0x03,0x01,0x02,0x7e,0x01,0x00 }; | |
263 | static const uint8_t mxf_encrypted_essence_container[] = { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x0d,0x01,0x03,0x01,0x02,0x0b,0x01,0x00 }; | |
264 | 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 }; | |
265 | static const uint8_t mxf_sony_mpeg4_extradata[] = { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0e,0x06,0x06,0x02,0x02,0x01,0x00,0x00 }; | |
266 | ||
267 | #define IS_KLV_KEY(x, y) (!memcmp(x, y, sizeof(y))) | |
268 | ||
269 | static int64_t klv_decode_ber_length(AVIOContext *pb) | |
270 | { | |
271 | uint64_t size = avio_r8(pb); | |
272 | if (size & 0x80) { /* long form */ | |
273 | int bytes_num = size & 0x7f; | |
274 | /* SMPTE 379M 5.3.4 guarantee that bytes_num must not exceed 8 bytes */ | |
275 | if (bytes_num > 8) | |
276 | return AVERROR_INVALIDDATA; | |
277 | size = 0; | |
278 | while (bytes_num--) | |
279 | size = size << 8 | avio_r8(pb); | |
280 | } | |
281 | return size; | |
282 | } | |
283 | ||
284 | static int mxf_read_sync(AVIOContext *pb, const uint8_t *key, unsigned size) | |
285 | { | |
286 | int i, b; | |
287 | for (i = 0; i < size && !avio_feof(pb); i++) { | |
288 | b = avio_r8(pb); | |
289 | if (b == key[0]) | |
290 | i = 0; | |
291 | else if (b != key[i]) | |
292 | i = -1; | |
293 | } | |
294 | return i == size; | |
295 | } | |
296 | ||
297 | static int klv_read_packet(KLVPacket *klv, AVIOContext *pb) | |
298 | { | |
299 | if (!mxf_read_sync(pb, mxf_klv_key, 4)) | |
300 | return AVERROR_INVALIDDATA; | |
301 | klv->offset = avio_tell(pb) - 4; | |
302 | memcpy(klv->key, mxf_klv_key, 4); | |
303 | avio_read(pb, klv->key + 4, 12); | |
304 | klv->length = klv_decode_ber_length(pb); | |
305 | return klv->length == -1 ? -1 : 0; | |
306 | } | |
307 | ||
308 | static int mxf_get_stream_index(AVFormatContext *s, KLVPacket *klv) | |
309 | { | |
310 | int i; | |
311 | ||
312 | for (i = 0; i < s->nb_streams; i++) { | |
313 | MXFTrack *track = s->streams[i]->priv_data; | |
314 | /* SMPTE 379M 7.3 */ | |
315 | if (!memcmp(klv->key + sizeof(mxf_essence_element_key), track->track_number, sizeof(track->track_number))) | |
316 | return i; | |
317 | } | |
318 | /* return 0 if only one stream, for OP Atom files with 0 as track number */ | |
319 | return s->nb_streams == 1 ? 0 : -1; | |
320 | } | |
321 | ||
322 | /* XXX: use AVBitStreamFilter */ | |
323 | static int mxf_get_d10_aes3_packet(AVIOContext *pb, AVStream *st, AVPacket *pkt, int64_t length) | |
324 | { | |
325 | const uint8_t *buf_ptr, *end_ptr; | |
326 | uint8_t *data_ptr; | |
327 | int i; | |
328 | ||
329 | if (length > 61444) /* worst case PAL 1920 samples 8 channels */ | |
330 | return AVERROR_INVALIDDATA; | |
331 | length = av_get_packet(pb, pkt, length); | |
332 | if (length < 0) | |
333 | return length; | |
334 | data_ptr = pkt->data; | |
335 | end_ptr = pkt->data + length; | |
336 | buf_ptr = pkt->data + 4; /* skip SMPTE 331M header */ | |
337 | for (; end_ptr - buf_ptr >= st->codec->channels * 4; ) { | |
338 | for (i = 0; i < st->codec->channels; i++) { | |
339 | uint32_t sample = bytestream_get_le32(&buf_ptr); | |
340 | if (st->codec->bits_per_coded_sample == 24) | |
341 | bytestream_put_le24(&data_ptr, (sample >> 4) & 0xffffff); | |
342 | else | |
343 | bytestream_put_le16(&data_ptr, (sample >> 12) & 0xffff); | |
344 | } | |
345 | buf_ptr += 32 - st->codec->channels*4; // always 8 channels stored SMPTE 331M | |
346 | } | |
347 | av_shrink_packet(pkt, data_ptr - pkt->data); | |
348 | return 0; | |
349 | } | |
350 | ||
351 | static int mxf_decrypt_triplet(AVFormatContext *s, AVPacket *pkt, KLVPacket *klv) | |
352 | { | |
353 | static const uint8_t checkv[16] = {0x43, 0x48, 0x55, 0x4b, 0x43, 0x48, 0x55, 0x4b, 0x43, 0x48, 0x55, 0x4b, 0x43, 0x48, 0x55, 0x4b}; | |
354 | MXFContext *mxf = s->priv_data; | |
355 | AVIOContext *pb = s->pb; | |
356 | int64_t end = avio_tell(pb) + klv->length; | |
357 | int64_t size; | |
358 | uint64_t orig_size; | |
359 | uint64_t plaintext_size; | |
360 | uint8_t ivec[16]; | |
361 | uint8_t tmpbuf[16]; | |
362 | int index; | |
363 | ||
364 | if (!mxf->aesc && s->key && s->keylen == 16) { | |
365 | mxf->aesc = av_aes_alloc(); | |
366 | if (!mxf->aesc) | |
367 | return AVERROR(ENOMEM); | |
368 | av_aes_init(mxf->aesc, s->key, 128, 1); | |
369 | } | |
370 | // crypto context | |
371 | avio_skip(pb, klv_decode_ber_length(pb)); | |
372 | // plaintext offset | |
373 | klv_decode_ber_length(pb); | |
374 | plaintext_size = avio_rb64(pb); | |
375 | // source klv key | |
376 | klv_decode_ber_length(pb); | |
377 | avio_read(pb, klv->key, 16); | |
378 | if (!IS_KLV_KEY(klv, mxf_essence_element_key)) | |
379 | return AVERROR_INVALIDDATA; | |
380 | index = mxf_get_stream_index(s, klv); | |
381 | if (index < 0) | |
382 | return AVERROR_INVALIDDATA; | |
383 | // source size | |
384 | klv_decode_ber_length(pb); | |
385 | orig_size = avio_rb64(pb); | |
386 | if (orig_size < plaintext_size) | |
387 | return AVERROR_INVALIDDATA; | |
388 | // enc. code | |
389 | size = klv_decode_ber_length(pb); | |
390 | if (size < 32 || size - 32 < orig_size) | |
391 | return AVERROR_INVALIDDATA; | |
392 | avio_read(pb, ivec, 16); | |
393 | avio_read(pb, tmpbuf, 16); | |
394 | if (mxf->aesc) | |
395 | av_aes_crypt(mxf->aesc, tmpbuf, tmpbuf, 1, ivec, 1); | |
396 | if (memcmp(tmpbuf, checkv, 16)) | |
397 | av_log(s, AV_LOG_ERROR, "probably incorrect decryption key\n"); | |
398 | size -= 32; | |
399 | size = av_get_packet(pb, pkt, size); | |
400 | if (size < 0) | |
401 | return size; | |
402 | else if (size < plaintext_size) | |
403 | return AVERROR_INVALIDDATA; | |
404 | size -= plaintext_size; | |
405 | if (mxf->aesc) | |
406 | av_aes_crypt(mxf->aesc, &pkt->data[plaintext_size], | |
407 | &pkt->data[plaintext_size], size >> 4, ivec, 1); | |
408 | av_shrink_packet(pkt, orig_size); | |
409 | pkt->stream_index = index; | |
410 | avio_skip(pb, end - avio_tell(pb)); | |
411 | return 0; | |
412 | } | |
413 | ||
414 | static int mxf_read_primer_pack(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset) | |
415 | { | |
416 | MXFContext *mxf = arg; | |
417 | int item_num = avio_rb32(pb); | |
418 | int item_len = avio_rb32(pb); | |
419 | ||
420 | if (item_len != 18) { | |
421 | avpriv_request_sample(pb, "Primer pack item length %d", item_len); | |
422 | return AVERROR_PATCHWELCOME; | |
423 | } | |
424 | if (item_num > 65536) { | |
425 | av_log(mxf->fc, AV_LOG_ERROR, "item_num %d is too large\n", item_num); | |
426 | return AVERROR_INVALIDDATA; | |
427 | } | |
428 | mxf->local_tags = av_calloc(item_num, item_len); | |
429 | if (!mxf->local_tags) | |
430 | return AVERROR(ENOMEM); | |
431 | mxf->local_tags_count = item_num; | |
432 | avio_read(pb, mxf->local_tags, item_num*item_len); | |
433 | return 0; | |
434 | } | |
435 | ||
436 | static int mxf_read_partition_pack(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset) | |
437 | { | |
438 | MXFContext *mxf = arg; | |
439 | MXFPartition *partition, *tmp_part; | |
440 | UID op; | |
441 | uint64_t footer_partition; | |
442 | uint32_t nb_essence_containers; | |
443 | ||
444 | tmp_part = av_realloc_array(mxf->partitions, mxf->partitions_count + 1, sizeof(*mxf->partitions)); | |
445 | if (!tmp_part) | |
446 | return AVERROR(ENOMEM); | |
447 | mxf->partitions = tmp_part; | |
448 | ||
449 | if (mxf->parsing_backward) { | |
450 | /* insert the new partition pack in the middle | |
451 | * this makes the entries in mxf->partitions sorted by offset */ | |
452 | memmove(&mxf->partitions[mxf->last_forward_partition+1], | |
453 | &mxf->partitions[mxf->last_forward_partition], | |
454 | (mxf->partitions_count - mxf->last_forward_partition)*sizeof(*mxf->partitions)); | |
455 | partition = mxf->current_partition = &mxf->partitions[mxf->last_forward_partition]; | |
456 | } else { | |
457 | mxf->last_forward_partition++; | |
458 | partition = mxf->current_partition = &mxf->partitions[mxf->partitions_count]; | |
459 | } | |
460 | ||
461 | memset(partition, 0, sizeof(*partition)); | |
462 | mxf->partitions_count++; | |
463 | partition->pack_length = avio_tell(pb) - klv_offset + size; | |
464 | ||
465 | switch(uid[13]) { | |
466 | case 2: | |
467 | partition->type = Header; | |
468 | break; | |
469 | case 3: | |
470 | partition->type = BodyPartition; | |
471 | break; | |
472 | case 4: | |
473 | partition->type = Footer; | |
474 | break; | |
475 | default: | |
476 | av_log(mxf->fc, AV_LOG_ERROR, "unknown partition type %i\n", uid[13]); | |
477 | return AVERROR_INVALIDDATA; | |
478 | } | |
479 | ||
480 | /* consider both footers to be closed (there is only Footer and CompleteFooter) */ | |
481 | partition->closed = partition->type == Footer || !(uid[14] & 1); | |
482 | partition->complete = uid[14] > 2; | |
483 | avio_skip(pb, 4); | |
484 | partition->kag_size = avio_rb32(pb); | |
485 | partition->this_partition = avio_rb64(pb); | |
486 | partition->previous_partition = avio_rb64(pb); | |
487 | footer_partition = avio_rb64(pb); | |
488 | partition->header_byte_count = avio_rb64(pb); | |
489 | partition->index_byte_count = avio_rb64(pb); | |
490 | partition->index_sid = avio_rb32(pb); | |
491 | avio_skip(pb, 8); | |
492 | partition->body_sid = avio_rb32(pb); | |
493 | if (avio_read(pb, op, sizeof(UID)) != sizeof(UID)) { | |
494 | av_log(mxf->fc, AV_LOG_ERROR, "Failed reading UID\n"); | |
495 | return AVERROR_INVALIDDATA; | |
496 | } | |
497 | nb_essence_containers = avio_rb32(pb); | |
498 | ||
499 | if (partition->this_partition && | |
500 | partition->previous_partition == partition->this_partition) { | |
501 | av_log(mxf->fc, AV_LOG_ERROR, | |
502 | "PreviousPartition equal to ThisPartition %"PRIx64"\n", | |
503 | partition->previous_partition); | |
504 | /* override with the actual previous partition offset */ | |
505 | if (!mxf->parsing_backward && mxf->last_forward_partition > 1) { | |
506 | MXFPartition *prev = | |
507 | mxf->partitions + mxf->last_forward_partition - 2; | |
508 | partition->previous_partition = prev->this_partition; | |
509 | } | |
510 | /* if no previous body partition are found point to the header | |
511 | * partition */ | |
512 | if (partition->previous_partition == partition->this_partition) | |
513 | partition->previous_partition = 0; | |
514 | av_log(mxf->fc, AV_LOG_ERROR, | |
515 | "Overriding PreviousPartition with %"PRIx64"\n", | |
516 | partition->previous_partition); | |
517 | } | |
518 | ||
519 | /* some files don'thave FooterPartition set in every partition */ | |
520 | if (footer_partition) { | |
521 | if (mxf->footer_partition && mxf->footer_partition != footer_partition) { | |
522 | av_log(mxf->fc, AV_LOG_ERROR, | |
523 | "inconsistent FooterPartition value: %"PRIu64" != %"PRIu64"\n", | |
524 | mxf->footer_partition, footer_partition); | |
525 | } else { | |
526 | mxf->footer_partition = footer_partition; | |
527 | } | |
528 | } | |
529 | ||
530 | av_dlog(mxf->fc, | |
531 | "PartitionPack: ThisPartition = 0x%"PRIX64 | |
532 | ", PreviousPartition = 0x%"PRIX64", " | |
533 | "FooterPartition = 0x%"PRIX64", IndexSID = %i, BodySID = %i\n", | |
534 | partition->this_partition, | |
535 | partition->previous_partition, footer_partition, | |
536 | partition->index_sid, partition->body_sid); | |
537 | ||
538 | /* sanity check PreviousPartition if set */ | |
539 | if (partition->previous_partition && | |
540 | mxf->run_in + partition->previous_partition >= klv_offset) { | |
541 | av_log(mxf->fc, AV_LOG_ERROR, | |
542 | "PreviousPartition points to this partition or forward\n"); | |
543 | return AVERROR_INVALIDDATA; | |
544 | } | |
545 | ||
546 | if (op[12] == 1 && op[13] == 1) mxf->op = OP1a; | |
547 | else if (op[12] == 1 && op[13] == 2) mxf->op = OP1b; | |
548 | else if (op[12] == 1 && op[13] == 3) mxf->op = OP1c; | |
549 | else if (op[12] == 2 && op[13] == 1) mxf->op = OP2a; | |
550 | else if (op[12] == 2 && op[13] == 2) mxf->op = OP2b; | |
551 | else if (op[12] == 2 && op[13] == 3) mxf->op = OP2c; | |
552 | else if (op[12] == 3 && op[13] == 1) mxf->op = OP3a; | |
553 | else if (op[12] == 3 && op[13] == 2) mxf->op = OP3b; | |
554 | else if (op[12] == 3 && op[13] == 3) mxf->op = OP3c; | |
555 | else if (op[12] == 64&& op[13] == 1) mxf->op = OPSONYOpt; | |
556 | else if (op[12] == 0x10) { | |
557 | /* SMPTE 390m: "There shall be exactly one essence container" | |
558 | * The following block deals with files that violate this, namely: | |
559 | * 2011_DCPTEST_24FPS.V.mxf - two ECs, OP1a | |
560 | * abcdefghiv016f56415e.mxf - zero ECs, OPAtom, output by Avid AirSpeed */ | |
561 | if (nb_essence_containers != 1) { | |
562 | MXFOP op = nb_essence_containers ? OP1a : OPAtom; | |
563 | ||
564 | /* only nag once */ | |
565 | if (!mxf->op) | |
566 | av_log(mxf->fc, AV_LOG_WARNING, | |
567 | "\"OPAtom\" with %"PRIu32" ECs - assuming %s\n", | |
568 | nb_essence_containers, | |
569 | op == OP1a ? "OP1a" : "OPAtom"); | |
570 | ||
571 | mxf->op = op; | |
572 | } else | |
573 | mxf->op = OPAtom; | |
574 | } else { | |
575 | av_log(mxf->fc, AV_LOG_ERROR, "unknown operational pattern: %02xh %02xh - guessing OP1a\n", op[12], op[13]); | |
576 | mxf->op = OP1a; | |
577 | } | |
578 | ||
579 | if (partition->kag_size <= 0 || partition->kag_size > (1 << 20)) { | |
580 | av_log(mxf->fc, AV_LOG_WARNING, "invalid KAGSize %"PRId32" - guessing ", | |
581 | partition->kag_size); | |
582 | ||
583 | if (mxf->op == OPSONYOpt) | |
584 | partition->kag_size = 512; | |
585 | else | |
586 | partition->kag_size = 1; | |
587 | ||
588 | av_log(mxf->fc, AV_LOG_WARNING, "%"PRId32"\n", partition->kag_size); | |
589 | } | |
590 | ||
591 | return 0; | |
592 | } | |
593 | ||
594 | static int mxf_add_metadata_set(MXFContext *mxf, void *metadata_set) | |
595 | { | |
596 | MXFMetadataSet **tmp; | |
597 | ||
598 | tmp = av_realloc_array(mxf->metadata_sets, mxf->metadata_sets_count + 1, sizeof(*mxf->metadata_sets)); | |
599 | if (!tmp) | |
600 | return AVERROR(ENOMEM); | |
601 | mxf->metadata_sets = tmp; | |
602 | mxf->metadata_sets[mxf->metadata_sets_count] = metadata_set; | |
603 | mxf->metadata_sets_count++; | |
604 | return 0; | |
605 | } | |
606 | ||
607 | static int mxf_read_cryptographic_context(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset) | |
608 | { | |
609 | MXFCryptoContext *cryptocontext = arg; | |
610 | if (size != 16) | |
611 | return AVERROR_INVALIDDATA; | |
612 | if (IS_KLV_KEY(uid, mxf_crypto_source_container_ul)) | |
613 | avio_read(pb, cryptocontext->source_container_ul, 16); | |
614 | return 0; | |
615 | } | |
616 | ||
617 | static int mxf_read_content_storage(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset) | |
618 | { | |
619 | MXFContext *mxf = arg; | |
620 | switch (tag) { | |
621 | case 0x1901: | |
622 | mxf->packages_count = avio_rb32(pb); | |
623 | mxf->packages_refs = av_calloc(mxf->packages_count, sizeof(UID)); | |
624 | if (!mxf->packages_refs) | |
625 | return AVERROR(ENOMEM); | |
626 | avio_skip(pb, 4); /* useless size of objects, always 16 according to specs */ | |
627 | avio_read(pb, (uint8_t *)mxf->packages_refs, mxf->packages_count * sizeof(UID)); | |
628 | break; | |
629 | } | |
630 | return 0; | |
631 | } | |
632 | ||
633 | static int mxf_read_source_clip(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset) | |
634 | { | |
635 | MXFStructuralComponent *source_clip = arg; | |
636 | switch(tag) { | |
637 | case 0x0202: | |
638 | source_clip->duration = avio_rb64(pb); | |
639 | break; | |
640 | case 0x1201: | |
641 | source_clip->start_position = avio_rb64(pb); | |
642 | break; | |
643 | case 0x1101: | |
644 | /* UMID, only get last 16 bytes */ | |
645 | avio_skip(pb, 16); | |
646 | avio_read(pb, source_clip->source_package_uid, 16); | |
647 | break; | |
648 | case 0x1102: | |
649 | source_clip->source_track_id = avio_rb32(pb); | |
650 | break; | |
651 | } | |
652 | return 0; | |
653 | } | |
654 | ||
655 | static int mxf_read_material_package(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset) | |
656 | { | |
657 | MXFPackage *package = arg; | |
658 | switch(tag) { | |
659 | case 0x4403: | |
660 | package->tracks_count = avio_rb32(pb); | |
661 | package->tracks_refs = av_calloc(package->tracks_count, sizeof(UID)); | |
662 | if (!package->tracks_refs) | |
663 | return AVERROR(ENOMEM); | |
664 | avio_skip(pb, 4); /* useless size of objects, always 16 according to specs */ | |
665 | avio_read(pb, (uint8_t *)package->tracks_refs, package->tracks_count * sizeof(UID)); | |
666 | break; | |
667 | } | |
668 | return 0; | |
669 | } | |
670 | ||
671 | static int mxf_read_timecode_component(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset) | |
672 | { | |
673 | MXFTimecodeComponent *mxf_timecode = arg; | |
674 | switch(tag) { | |
675 | case 0x1501: | |
676 | mxf_timecode->start_frame = avio_rb64(pb); | |
677 | break; | |
678 | case 0x1502: | |
679 | mxf_timecode->rate = (AVRational){avio_rb16(pb), 1}; | |
680 | break; | |
681 | case 0x1503: | |
682 | mxf_timecode->drop_frame = avio_r8(pb); | |
683 | break; | |
684 | } | |
685 | return 0; | |
686 | } | |
687 | ||
688 | static int mxf_read_track(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset) | |
689 | { | |
690 | MXFTrack *track = arg; | |
691 | switch(tag) { | |
692 | case 0x4801: | |
693 | track->track_id = avio_rb32(pb); | |
694 | break; | |
695 | case 0x4804: | |
696 | avio_read(pb, track->track_number, 4); | |
697 | break; | |
698 | case 0x4b01: | |
699 | track->edit_rate.num = avio_rb32(pb); | |
700 | track->edit_rate.den = avio_rb32(pb); | |
701 | break; | |
702 | case 0x4803: | |
703 | avio_read(pb, track->sequence_ref, 16); | |
704 | break; | |
705 | } | |
706 | return 0; | |
707 | } | |
708 | ||
709 | static int mxf_read_sequence(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset) | |
710 | { | |
711 | MXFSequence *sequence = arg; | |
712 | switch(tag) { | |
713 | case 0x0202: | |
714 | sequence->duration = avio_rb64(pb); | |
715 | break; | |
716 | case 0x0201: | |
717 | avio_read(pb, sequence->data_definition_ul, 16); | |
718 | break; | |
719 | case 0x4b02: | |
720 | sequence->origin = avio_r8(pb); | |
721 | break; | |
722 | case 0x1001: | |
723 | sequence->structural_components_count = avio_rb32(pb); | |
724 | sequence->structural_components_refs = av_calloc(sequence->structural_components_count, sizeof(UID)); | |
725 | if (!sequence->structural_components_refs) | |
726 | return AVERROR(ENOMEM); | |
727 | avio_skip(pb, 4); /* useless size of objects, always 16 according to specs */ | |
728 | avio_read(pb, (uint8_t *)sequence->structural_components_refs, sequence->structural_components_count * sizeof(UID)); | |
729 | break; | |
730 | } | |
731 | return 0; | |
732 | } | |
733 | ||
734 | static int mxf_read_source_package(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset) | |
735 | { | |
736 | MXFPackage *package = arg; | |
737 | switch(tag) { | |
738 | case 0x4403: | |
739 | package->tracks_count = avio_rb32(pb); | |
740 | package->tracks_refs = av_calloc(package->tracks_count, sizeof(UID)); | |
741 | if (!package->tracks_refs) | |
742 | return AVERROR(ENOMEM); | |
743 | avio_skip(pb, 4); /* useless size of objects, always 16 according to specs */ | |
744 | avio_read(pb, (uint8_t *)package->tracks_refs, package->tracks_count * sizeof(UID)); | |
745 | break; | |
746 | case 0x4401: | |
747 | /* UMID, only get last 16 bytes */ | |
748 | avio_skip(pb, 16); | |
749 | avio_read(pb, package->package_uid, 16); | |
750 | break; | |
751 | case 0x4701: | |
752 | avio_read(pb, package->descriptor_ref, 16); | |
753 | break; | |
754 | } | |
755 | return 0; | |
756 | } | |
757 | ||
758 | static int mxf_read_index_entry_array(AVIOContext *pb, MXFIndexTableSegment *segment) | |
759 | { | |
760 | int i, length; | |
761 | ||
762 | segment->nb_index_entries = avio_rb32(pb); | |
763 | ||
764 | length = avio_rb32(pb); | |
765 | ||
766 | if (!(segment->temporal_offset_entries=av_calloc(segment->nb_index_entries, sizeof(*segment->temporal_offset_entries))) || | |
767 | !(segment->flag_entries = av_calloc(segment->nb_index_entries, sizeof(*segment->flag_entries))) || | |
768 | !(segment->stream_offset_entries = av_calloc(segment->nb_index_entries, sizeof(*segment->stream_offset_entries)))) | |
769 | return AVERROR(ENOMEM); | |
770 | ||
771 | for (i = 0; i < segment->nb_index_entries; i++) { | |
772 | segment->temporal_offset_entries[i] = avio_r8(pb); | |
773 | avio_r8(pb); /* KeyFrameOffset */ | |
774 | segment->flag_entries[i] = avio_r8(pb); | |
775 | segment->stream_offset_entries[i] = avio_rb64(pb); | |
776 | avio_skip(pb, length - 11); | |
777 | } | |
778 | return 0; | |
779 | } | |
780 | ||
781 | static int mxf_read_index_table_segment(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset) | |
782 | { | |
783 | MXFIndexTableSegment *segment = arg; | |
784 | switch(tag) { | |
785 | case 0x3F05: | |
786 | segment->edit_unit_byte_count = avio_rb32(pb); | |
787 | av_dlog(NULL, "EditUnitByteCount %d\n", segment->edit_unit_byte_count); | |
788 | break; | |
789 | case 0x3F06: | |
790 | segment->index_sid = avio_rb32(pb); | |
791 | av_dlog(NULL, "IndexSID %d\n", segment->index_sid); | |
792 | break; | |
793 | case 0x3F07: | |
794 | segment->body_sid = avio_rb32(pb); | |
795 | av_dlog(NULL, "BodySID %d\n", segment->body_sid); | |
796 | break; | |
797 | case 0x3F0A: | |
798 | av_dlog(NULL, "IndexEntryArray found\n"); | |
799 | return mxf_read_index_entry_array(pb, segment); | |
800 | case 0x3F0B: | |
801 | segment->index_edit_rate.num = avio_rb32(pb); | |
802 | segment->index_edit_rate.den = avio_rb32(pb); | |
803 | av_dlog(NULL, "IndexEditRate %d/%d\n", segment->index_edit_rate.num, | |
804 | segment->index_edit_rate.den); | |
805 | break; | |
806 | case 0x3F0C: | |
807 | segment->index_start_position = avio_rb64(pb); | |
808 | av_dlog(NULL, "IndexStartPosition %"PRId64"\n", segment->index_start_position); | |
809 | break; | |
810 | case 0x3F0D: | |
811 | segment->index_duration = avio_rb64(pb); | |
812 | av_dlog(NULL, "IndexDuration %"PRId64"\n", segment->index_duration); | |
813 | break; | |
814 | } | |
815 | return 0; | |
816 | } | |
817 | ||
818 | static void mxf_read_pixel_layout(AVIOContext *pb, MXFDescriptor *descriptor) | |
819 | { | |
820 | int code, value, ofs = 0; | |
821 | char layout[16] = {0}; /* not for printing, may end up not terminated on purpose */ | |
822 | ||
823 | do { | |
824 | code = avio_r8(pb); | |
825 | value = avio_r8(pb); | |
826 | av_dlog(NULL, "pixel layout: code %#x\n", code); | |
827 | ||
828 | if (ofs <= 14) { | |
829 | layout[ofs++] = code; | |
830 | layout[ofs++] = value; | |
831 | } else | |
832 | break; /* don't read byte by byte on sneaky files filled with lots of non-zeroes */ | |
833 | } while (code != 0); /* SMPTE 377M E.2.46 */ | |
834 | ||
835 | ff_mxf_decode_pixel_layout(layout, &descriptor->pix_fmt); | |
836 | } | |
837 | ||
838 | static int mxf_read_generic_descriptor(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset) | |
839 | { | |
840 | MXFDescriptor *descriptor = arg; | |
841 | descriptor->pix_fmt = AV_PIX_FMT_NONE; | |
842 | switch(tag) { | |
843 | case 0x3F01: | |
844 | descriptor->sub_descriptors_count = avio_rb32(pb); | |
845 | descriptor->sub_descriptors_refs = av_calloc(descriptor->sub_descriptors_count, sizeof(UID)); | |
846 | if (!descriptor->sub_descriptors_refs) | |
847 | return AVERROR(ENOMEM); | |
848 | avio_skip(pb, 4); /* useless size of objects, always 16 according to specs */ | |
849 | avio_read(pb, (uint8_t *)descriptor->sub_descriptors_refs, descriptor->sub_descriptors_count * sizeof(UID)); | |
850 | break; | |
851 | case 0x3004: | |
852 | avio_read(pb, descriptor->essence_container_ul, 16); | |
853 | break; | |
854 | case 0x3006: | |
855 | descriptor->linked_track_id = avio_rb32(pb); | |
856 | break; | |
857 | case 0x3201: /* PictureEssenceCoding */ | |
858 | avio_read(pb, descriptor->essence_codec_ul, 16); | |
859 | break; | |
860 | case 0x3203: | |
861 | descriptor->width = avio_rb32(pb); | |
862 | break; | |
863 | case 0x3202: | |
864 | descriptor->height = avio_rb32(pb); | |
865 | break; | |
866 | case 0x320C: | |
867 | descriptor->frame_layout = avio_r8(pb); | |
868 | break; | |
869 | case 0x320E: | |
870 | descriptor->aspect_ratio.num = avio_rb32(pb); | |
871 | descriptor->aspect_ratio.den = avio_rb32(pb); | |
872 | break; | |
873 | case 0x3212: | |
874 | descriptor->field_dominance = avio_r8(pb); | |
875 | break; | |
876 | case 0x3301: | |
877 | descriptor->component_depth = avio_rb32(pb); | |
878 | break; | |
879 | case 0x3302: | |
880 | descriptor->horiz_subsampling = avio_rb32(pb); | |
881 | break; | |
882 | case 0x3308: | |
883 | descriptor->vert_subsampling = avio_rb32(pb); | |
884 | break; | |
885 | case 0x3D03: | |
886 | descriptor->sample_rate.num = avio_rb32(pb); | |
887 | descriptor->sample_rate.den = avio_rb32(pb); | |
888 | break; | |
889 | case 0x3D06: /* SoundEssenceCompression */ | |
890 | avio_read(pb, descriptor->essence_codec_ul, 16); | |
891 | break; | |
892 | case 0x3D07: | |
893 | descriptor->channels = avio_rb32(pb); | |
894 | break; | |
895 | case 0x3D01: | |
896 | descriptor->bits_per_sample = avio_rb32(pb); | |
897 | break; | |
898 | case 0x3401: | |
899 | mxf_read_pixel_layout(pb, descriptor); | |
900 | break; | |
901 | default: | |
902 | /* Private uid used by SONY C0023S01.mxf */ | |
903 | if (IS_KLV_KEY(uid, mxf_sony_mpeg4_extradata)) { | |
904 | if (descriptor->extradata) | |
905 | av_log(NULL, AV_LOG_WARNING, "Duplicate sony_mpeg4_extradata\n"); | |
906 | av_free(descriptor->extradata); | |
907 | descriptor->extradata_size = 0; | |
908 | descriptor->extradata = av_malloc(size); | |
909 | if (!descriptor->extradata) | |
910 | return AVERROR(ENOMEM); | |
911 | descriptor->extradata_size = size; | |
912 | avio_read(pb, descriptor->extradata, size); | |
913 | } | |
914 | break; | |
915 | } | |
916 | return 0; | |
917 | } | |
918 | ||
919 | /* | |
920 | * Match an uid independently of the version byte and up to len common bytes | |
921 | * Returns: boolean | |
922 | */ | |
923 | static int mxf_match_uid(const UID key, const UID uid, int len) | |
924 | { | |
925 | int i; | |
926 | for (i = 0; i < len; i++) { | |
927 | if (i != 7 && key[i] != uid[i]) | |
928 | return 0; | |
929 | } | |
930 | return 1; | |
931 | } | |
932 | ||
933 | static const MXFCodecUL *mxf_get_codec_ul(const MXFCodecUL *uls, UID *uid) | |
934 | { | |
935 | while (uls->uid[0]) { | |
936 | if(mxf_match_uid(uls->uid, *uid, uls->matching_len)) | |
937 | break; | |
938 | uls++; | |
939 | } | |
940 | return uls; | |
941 | } | |
942 | ||
943 | static void *mxf_resolve_strong_ref(MXFContext *mxf, UID *strong_ref, enum MXFMetadataSetType type) | |
944 | { | |
945 | int i; | |
946 | ||
947 | if (!strong_ref) | |
948 | return NULL; | |
949 | for (i = 0; i < mxf->metadata_sets_count; i++) { | |
950 | if (!memcmp(*strong_ref, mxf->metadata_sets[i]->uid, 16) && | |
951 | (type == AnyType || mxf->metadata_sets[i]->type == type)) { | |
952 | return mxf->metadata_sets[i]; | |
953 | } | |
954 | } | |
955 | return NULL; | |
956 | } | |
957 | ||
958 | static const MXFCodecUL mxf_picture_essence_container_uls[] = { | |
959 | // video essence container uls | |
960 | { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x02,0x0d,0x01,0x03,0x01,0x02,0x04,0x60,0x01 }, 14, AV_CODEC_ID_MPEG2VIDEO }, /* MPEG-ES Frame wrapped */ | |
961 | { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x02,0x41,0x01 }, 14, AV_CODEC_ID_DVVIDEO }, /* DV 625 25mbps */ | |
962 | { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x05,0x00,0x00 }, 14, AV_CODEC_ID_RAWVIDEO }, /* Uncompressed Picture */ | |
963 | { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, AV_CODEC_ID_NONE }, | |
964 | }; | |
965 | ||
966 | /* EC ULs for intra-only formats */ | |
967 | static const MXFCodecUL mxf_intra_only_essence_container_uls[] = { | |
968 | { { 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 */ | |
969 | { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, AV_CODEC_ID_NONE }, | |
970 | }; | |
971 | ||
972 | /* intra-only PictureEssenceCoding ULs, where no corresponding EC UL exists */ | |
973 | static const MXFCodecUL mxf_intra_only_picture_essence_coding_uls[] = { | |
974 | { { 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 */ | |
975 | { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x04,0x01,0x02,0x02,0x03,0x01,0x01,0x00 }, 14, AV_CODEC_ID_JPEG2000 }, /* JPEG2000 Codestream */ | |
976 | { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, AV_CODEC_ID_NONE }, | |
977 | }; | |
978 | ||
979 | static const MXFCodecUL mxf_sound_essence_container_uls[] = { | |
980 | // sound essence container uls | |
981 | { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x06,0x01,0x00 }, 14, AV_CODEC_ID_PCM_S16LE }, /* BWF Frame wrapped */ | |
982 | { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x02,0x0d,0x01,0x03,0x01,0x02,0x04,0x40,0x01 }, 14, AV_CODEC_ID_MP2 }, /* MPEG-ES Frame wrapped, 0x40 ??? stream id */ | |
983 | { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x01,0x01,0x01 }, 14, AV_CODEC_ID_PCM_S16LE }, /* D-10 Mapping 50Mbps PAL Extended Template */ | |
984 | { { 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 */ | |
985 | { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x03,0x04,0x02,0x02,0x02,0x03,0x03,0x01,0x00 }, 14, AV_CODEC_ID_AAC }, /* MPEG2 AAC ADTS (legacy) */ | |
986 | { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, AV_CODEC_ID_NONE }, | |
987 | }; | |
988 | ||
989 | static const MXFCodecUL mxf_data_essence_container_uls[] = { | |
990 | { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x09,0x0d,0x01,0x03,0x01,0x02,0x0e,0x00,0x00 }, 16, 0 }, | |
991 | { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, AV_CODEC_ID_NONE }, | |
992 | }; | |
993 | ||
994 | static const char* const mxf_data_essence_descriptor[] = { | |
995 | "vbi_vanc_smpte_436M", | |
996 | }; | |
997 | ||
998 | static int mxf_get_sorted_table_segments(MXFContext *mxf, int *nb_sorted_segments, MXFIndexTableSegment ***sorted_segments) | |
999 | { | |
1000 | int i, j, nb_segments = 0; | |
1001 | MXFIndexTableSegment **unsorted_segments; | |
1002 | int last_body_sid = -1, last_index_sid = -1, last_index_start = -1; | |
1003 | ||
1004 | /* count number of segments, allocate arrays and copy unsorted segments */ | |
1005 | for (i = 0; i < mxf->metadata_sets_count; i++) | |
1006 | if (mxf->metadata_sets[i]->type == IndexTableSegment) | |
1007 | nb_segments++; | |
1008 | ||
1009 | if (!nb_segments) | |
1010 | return AVERROR_INVALIDDATA; | |
1011 | ||
1012 | if (!(unsorted_segments = av_calloc(nb_segments, sizeof(*unsorted_segments))) || | |
1013 | !(*sorted_segments = av_calloc(nb_segments, sizeof(**sorted_segments)))) { | |
1014 | av_freep(sorted_segments); | |
1015 | av_free(unsorted_segments); | |
1016 | return AVERROR(ENOMEM); | |
1017 | } | |
1018 | ||
1019 | for (i = j = 0; i < mxf->metadata_sets_count; i++) | |
1020 | if (mxf->metadata_sets[i]->type == IndexTableSegment) | |
1021 | unsorted_segments[j++] = (MXFIndexTableSegment*)mxf->metadata_sets[i]; | |
1022 | ||
1023 | *nb_sorted_segments = 0; | |
1024 | ||
1025 | /* sort segments by {BodySID, IndexSID, IndexStartPosition}, remove duplicates while we're at it */ | |
1026 | for (i = 0; i < nb_segments; i++) { | |
1027 | int best = -1, best_body_sid = -1, best_index_sid = -1, best_index_start = -1; | |
1028 | uint64_t best_index_duration = 0; | |
1029 | ||
1030 | for (j = 0; j < nb_segments; j++) { | |
1031 | MXFIndexTableSegment *s = unsorted_segments[j]; | |
1032 | ||
1033 | /* Require larger BosySID, IndexSID or IndexStartPosition then the previous entry. This removes duplicates. | |
1034 | * We want the smallest values for the keys than what we currently have, unless this is the first such entry this time around. | |
1035 | * If we come across an entry with the same IndexStartPosition but larger IndexDuration, then we'll prefer it over the one we currently have. | |
1036 | */ | |
1037 | if ((i == 0 || s->body_sid > last_body_sid || s->index_sid > last_index_sid || s->index_start_position > last_index_start) && | |
1038 | (best == -1 || s->body_sid < best_body_sid || s->index_sid < best_index_sid || s->index_start_position < best_index_start || | |
1039 | (s->index_start_position == best_index_start && s->index_duration > best_index_duration))) { | |
1040 | best = j; | |
1041 | best_body_sid = s->body_sid; | |
1042 | best_index_sid = s->index_sid; | |
1043 | best_index_start = s->index_start_position; | |
1044 | best_index_duration = s->index_duration; | |
1045 | } | |
1046 | } | |
1047 | ||
1048 | /* no suitable entry found -> we're done */ | |
1049 | if (best == -1) | |
1050 | break; | |
1051 | ||
1052 | (*sorted_segments)[(*nb_sorted_segments)++] = unsorted_segments[best]; | |
1053 | last_body_sid = best_body_sid; | |
1054 | last_index_sid = best_index_sid; | |
1055 | last_index_start = best_index_start; | |
1056 | } | |
1057 | ||
1058 | av_free(unsorted_segments); | |
1059 | ||
1060 | return 0; | |
1061 | } | |
1062 | ||
1063 | /** | |
1064 | * Computes the absolute file offset of the given essence container offset | |
1065 | */ | |
1066 | static int mxf_absolute_bodysid_offset(MXFContext *mxf, int body_sid, int64_t offset, int64_t *offset_out) | |
1067 | { | |
1068 | int x; | |
1069 | int64_t offset_in = offset; /* for logging */ | |
1070 | ||
1071 | for (x = 0; x < mxf->partitions_count; x++) { | |
1072 | MXFPartition *p = &mxf->partitions[x]; | |
1073 | ||
1074 | if (p->body_sid != body_sid) | |
1075 | continue; | |
1076 | ||
1077 | if (offset < p->essence_length || !p->essence_length) { | |
1078 | *offset_out = p->essence_offset + offset; | |
1079 | return 0; | |
1080 | } | |
1081 | ||
1082 | offset -= p->essence_length; | |
1083 | } | |
1084 | ||
1085 | av_log(mxf->fc, AV_LOG_ERROR, | |
1086 | "failed to find absolute offset of %"PRIX64" in BodySID %i - partial file?\n", | |
1087 | offset_in, body_sid); | |
1088 | ||
1089 | return AVERROR_INVALIDDATA; | |
1090 | } | |
1091 | ||
1092 | /** | |
1093 | * Returns the end position of the essence container with given BodySID, or zero if unknown | |
1094 | */ | |
1095 | static int64_t mxf_essence_container_end(MXFContext *mxf, int body_sid) | |
1096 | { | |
1097 | int x; | |
1098 | int64_t ret = 0; | |
1099 | ||
1100 | for (x = 0; x < mxf->partitions_count; x++) { | |
1101 | MXFPartition *p = &mxf->partitions[x]; | |
1102 | ||
1103 | if (p->body_sid != body_sid) | |
1104 | continue; | |
1105 | ||
1106 | if (!p->essence_length) | |
1107 | return 0; | |
1108 | ||
1109 | ret = p->essence_offset + p->essence_length; | |
1110 | } | |
1111 | ||
1112 | return ret; | |
1113 | } | |
1114 | ||
1115 | /* EditUnit -> absolute offset */ | |
1116 | static int mxf_edit_unit_absolute_offset(MXFContext *mxf, MXFIndexTable *index_table, int64_t edit_unit, int64_t *edit_unit_out, int64_t *offset_out, int nag) | |
1117 | { | |
1118 | int i; | |
1119 | int64_t offset_temp = 0; | |
1120 | ||
1121 | for (i = 0; i < index_table->nb_segments; i++) { | |
1122 | MXFIndexTableSegment *s = index_table->segments[i]; | |
1123 | ||
1124 | edit_unit = FFMAX(edit_unit, s->index_start_position); /* clamp if trying to seek before start */ | |
1125 | ||
1126 | if (edit_unit < s->index_start_position + s->index_duration) { | |
1127 | int64_t index = edit_unit - s->index_start_position; | |
1128 | ||
1129 | if (s->edit_unit_byte_count) | |
1130 | offset_temp += s->edit_unit_byte_count * index; | |
1131 | else if (s->nb_index_entries) { | |
1132 | if (s->nb_index_entries == 2 * s->index_duration + 1) | |
1133 | index *= 2; /* Avid index */ | |
1134 | ||
1135 | if (index < 0 || index >= s->nb_index_entries) { | |
1136 | av_log(mxf->fc, AV_LOG_ERROR, "IndexSID %i segment at %"PRId64" IndexEntryArray too small\n", | |
1137 | index_table->index_sid, s->index_start_position); | |
1138 | return AVERROR_INVALIDDATA; | |
1139 | } | |
1140 | ||
1141 | offset_temp = s->stream_offset_entries[index]; | |
1142 | } else { | |
1143 | av_log(mxf->fc, AV_LOG_ERROR, "IndexSID %i segment at %"PRId64" missing EditUnitByteCount and IndexEntryArray\n", | |
1144 | index_table->index_sid, s->index_start_position); | |
1145 | return AVERROR_INVALIDDATA; | |
1146 | } | |
1147 | ||
1148 | if (edit_unit_out) | |
1149 | *edit_unit_out = edit_unit; | |
1150 | ||
1151 | return mxf_absolute_bodysid_offset(mxf, index_table->body_sid, offset_temp, offset_out); | |
1152 | } else { | |
1153 | /* EditUnitByteCount == 0 for VBR indexes, which is fine since they use explicit StreamOffsets */ | |
1154 | offset_temp += s->edit_unit_byte_count * s->index_duration; | |
1155 | } | |
1156 | } | |
1157 | ||
1158 | if (nag) | |
1159 | 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); | |
1160 | ||
1161 | return AVERROR_INVALIDDATA; | |
1162 | } | |
1163 | ||
1164 | static int mxf_compute_ptses_fake_index(MXFContext *mxf, MXFIndexTable *index_table) | |
1165 | { | |
1166 | int i, j, x; | |
1167 | int8_t max_temporal_offset = -128; | |
1168 | ||
1169 | /* first compute how many entries we have */ | |
1170 | for (i = 0; i < index_table->nb_segments; i++) { | |
1171 | MXFIndexTableSegment *s = index_table->segments[i]; | |
1172 | ||
1173 | if (!s->nb_index_entries) { | |
1174 | index_table->nb_ptses = 0; | |
1175 | return 0; /* no TemporalOffsets */ | |
1176 | } | |
1177 | ||
1178 | index_table->nb_ptses += s->index_duration; | |
1179 | } | |
1180 | ||
1181 | /* paranoid check */ | |
1182 | if (index_table->nb_ptses <= 0) | |
1183 | return 0; | |
1184 | ||
1185 | if (!(index_table->ptses = av_calloc(index_table->nb_ptses, sizeof(int64_t))) || | |
1186 | !(index_table->fake_index = av_calloc(index_table->nb_ptses, sizeof(AVIndexEntry)))) { | |
1187 | av_freep(&index_table->ptses); | |
1188 | return AVERROR(ENOMEM); | |
1189 | } | |
1190 | ||
1191 | /* we may have a few bad TemporalOffsets | |
1192 | * make sure the corresponding PTSes don't have the bogus value 0 */ | |
1193 | for (x = 0; x < index_table->nb_ptses; x++) | |
1194 | index_table->ptses[x] = AV_NOPTS_VALUE; | |
1195 | ||
1196 | /** | |
1197 | * We have this: | |
1198 | * | |
1199 | * x TemporalOffset | |
1200 | * 0: 0 | |
1201 | * 1: 1 | |
1202 | * 2: 1 | |
1203 | * 3: -2 | |
1204 | * 4: 1 | |
1205 | * 5: 1 | |
1206 | * 6: -2 | |
1207 | * | |
1208 | * We want to transform it into this: | |
1209 | * | |
1210 | * x DTS PTS | |
1211 | * 0: -1 0 | |
1212 | * 1: 0 3 | |
1213 | * 2: 1 1 | |
1214 | * 3: 2 2 | |
1215 | * 4: 3 6 | |
1216 | * 5: 4 4 | |
1217 | * 6: 5 5 | |
1218 | * | |
1219 | * We do this by bucket sorting x by x+TemporalOffset[x] into mxf->ptses, | |
1220 | * then settings mxf->first_dts = -max(TemporalOffset[x]). | |
1221 | * The latter makes DTS <= PTS. | |
1222 | */ | |
1223 | for (i = x = 0; i < index_table->nb_segments; i++) { | |
1224 | MXFIndexTableSegment *s = index_table->segments[i]; | |
1225 | int index_delta = 1; | |
1226 | int n = s->nb_index_entries; | |
1227 | ||
1228 | if (s->nb_index_entries == 2 * s->index_duration + 1) { | |
1229 | index_delta = 2; /* Avid index */ | |
1230 | /* ignore the last entry - it's the size of the essence container */ | |
1231 | n--; | |
1232 | } | |
1233 | ||
1234 | for (j = 0; j < n; j += index_delta, x++) { | |
1235 | int offset = s->temporal_offset_entries[j] / index_delta; | |
1236 | int index = x + offset; | |
1237 | ||
1238 | if (x >= index_table->nb_ptses) { | |
1239 | av_log(mxf->fc, AV_LOG_ERROR, | |
1240 | "x >= nb_ptses - IndexEntryCount %i < IndexDuration %"PRId64"?\n", | |
1241 | s->nb_index_entries, s->index_duration); | |
1242 | break; | |
1243 | } | |
1244 | ||
1245 | index_table->fake_index[x].timestamp = x; | |
1246 | index_table->fake_index[x].flags = !(s->flag_entries[j] & 0x30) ? AVINDEX_KEYFRAME : 0; | |
1247 | ||
1248 | if (index < 0 || index >= index_table->nb_ptses) { | |
1249 | av_log(mxf->fc, AV_LOG_ERROR, | |
1250 | "index entry %i + TemporalOffset %i = %i, which is out of bounds\n", | |
1251 | x, offset, index); | |
1252 | continue; | |
1253 | } | |
1254 | ||
1255 | index_table->ptses[index] = x; | |
1256 | max_temporal_offset = FFMAX(max_temporal_offset, offset); | |
1257 | } | |
1258 | } | |
1259 | ||
1260 | index_table->first_dts = -max_temporal_offset; | |
1261 | ||
1262 | return 0; | |
1263 | } | |
1264 | ||
1265 | /** | |
1266 | * Sorts and collects index table segments into index tables. | |
1267 | * Also computes PTSes if possible. | |
1268 | */ | |
1269 | static int mxf_compute_index_tables(MXFContext *mxf) | |
1270 | { | |
1271 | int i, j, k, ret, nb_sorted_segments; | |
1272 | MXFIndexTableSegment **sorted_segments = NULL; | |
1273 | ||
1274 | if ((ret = mxf_get_sorted_table_segments(mxf, &nb_sorted_segments, &sorted_segments)) || | |
1275 | nb_sorted_segments <= 0) { | |
1276 | av_log(mxf->fc, AV_LOG_WARNING, "broken or empty index\n"); | |
1277 | return 0; | |
1278 | } | |
1279 | ||
1280 | /* sanity check and count unique BodySIDs/IndexSIDs */ | |
1281 | for (i = 0; i < nb_sorted_segments; i++) { | |
1282 | if (i == 0 || sorted_segments[i-1]->index_sid != sorted_segments[i]->index_sid) | |
1283 | mxf->nb_index_tables++; | |
1284 | else if (sorted_segments[i-1]->body_sid != sorted_segments[i]->body_sid) { | |
1285 | av_log(mxf->fc, AV_LOG_ERROR, "found inconsistent BodySID\n"); | |
1286 | ret = AVERROR_INVALIDDATA; | |
1287 | goto finish_decoding_index; | |
1288 | } | |
1289 | } | |
1290 | ||
1291 | mxf->index_tables = av_mallocz_array(mxf->nb_index_tables, | |
1292 | sizeof(*mxf->index_tables)); | |
1293 | if (!mxf->index_tables) { | |
1294 | av_log(mxf->fc, AV_LOG_ERROR, "failed to allocate index tables\n"); | |
1295 | ret = AVERROR(ENOMEM); | |
1296 | goto finish_decoding_index; | |
1297 | } | |
1298 | ||
1299 | /* distribute sorted segments to index tables */ | |
1300 | for (i = j = 0; i < nb_sorted_segments; i++) { | |
1301 | if (i != 0 && sorted_segments[i-1]->index_sid != sorted_segments[i]->index_sid) { | |
1302 | /* next IndexSID */ | |
1303 | j++; | |
1304 | } | |
1305 | ||
1306 | mxf->index_tables[j].nb_segments++; | |
1307 | } | |
1308 | ||
1309 | for (i = j = 0; j < mxf->nb_index_tables; i += mxf->index_tables[j++].nb_segments) { | |
1310 | MXFIndexTable *t = &mxf->index_tables[j]; | |
1311 | ||
1312 | t->segments = av_mallocz_array(t->nb_segments, | |
1313 | sizeof(*t->segments)); | |
1314 | ||
1315 | if (!t->segments) { | |
1316 | av_log(mxf->fc, AV_LOG_ERROR, "failed to allocate IndexTableSegment" | |
1317 | " pointer array\n"); | |
1318 | ret = AVERROR(ENOMEM); | |
1319 | goto finish_decoding_index; | |
1320 | } | |
1321 | ||
1322 | if (sorted_segments[i]->index_start_position) | |
1323 | av_log(mxf->fc, AV_LOG_WARNING, "IndexSID %i starts at EditUnit %"PRId64" - seeking may not work as expected\n", | |
1324 | sorted_segments[i]->index_sid, sorted_segments[i]->index_start_position); | |
1325 | ||
1326 | memcpy(t->segments, &sorted_segments[i], t->nb_segments * sizeof(MXFIndexTableSegment*)); | |
1327 | t->index_sid = sorted_segments[i]->index_sid; | |
1328 | t->body_sid = sorted_segments[i]->body_sid; | |
1329 | ||
1330 | if ((ret = mxf_compute_ptses_fake_index(mxf, t)) < 0) | |
1331 | goto finish_decoding_index; | |
1332 | ||
1333 | /* fix zero IndexDurations */ | |
1334 | for (k = 0; k < t->nb_segments; k++) { | |
1335 | if (t->segments[k]->index_duration) | |
1336 | continue; | |
1337 | ||
1338 | if (t->nb_segments > 1) | |
1339 | av_log(mxf->fc, AV_LOG_WARNING, "IndexSID %i segment %i has zero IndexDuration and there's more than one segment\n", | |
1340 | t->index_sid, k); | |
1341 | ||
1342 | if (mxf->fc->nb_streams <= 0) { | |
1343 | av_log(mxf->fc, AV_LOG_WARNING, "no streams?\n"); | |
1344 | break; | |
1345 | } | |
1346 | ||
1347 | /* assume the first stream's duration is reasonable | |
1348 | * leave index_duration = 0 on further segments in case we have any (unlikely) | |
1349 | */ | |
1350 | t->segments[k]->index_duration = mxf->fc->streams[0]->duration; | |
1351 | break; | |
1352 | } | |
1353 | } | |
1354 | ||
1355 | ret = 0; | |
1356 | finish_decoding_index: | |
1357 | av_free(sorted_segments); | |
1358 | return ret; | |
1359 | } | |
1360 | ||
1361 | static int mxf_is_intra_only(MXFDescriptor *descriptor) | |
1362 | { | |
1363 | return mxf_get_codec_ul(mxf_intra_only_essence_container_uls, | |
1364 | &descriptor->essence_container_ul)->id != AV_CODEC_ID_NONE || | |
1365 | mxf_get_codec_ul(mxf_intra_only_picture_essence_coding_uls, | |
1366 | &descriptor->essence_codec_ul)->id != AV_CODEC_ID_NONE; | |
1367 | } | |
1368 | ||
1369 | static int mxf_add_timecode_metadata(AVDictionary **pm, const char *key, AVTimecode *tc) | |
1370 | { | |
1371 | char buf[AV_TIMECODE_STR_SIZE]; | |
1372 | av_dict_set(pm, key, av_timecode_make_string(tc, buf, 0), 0); | |
1373 | ||
1374 | return 0; | |
1375 | } | |
1376 | ||
1377 | static int mxf_parse_structural_metadata(MXFContext *mxf) | |
1378 | { | |
1379 | MXFPackage *material_package = NULL; | |
1380 | MXFPackage *temp_package = NULL; | |
1381 | int i, j, k, ret; | |
1382 | ||
1383 | av_dlog(mxf->fc, "metadata sets count %d\n", mxf->metadata_sets_count); | |
1384 | /* TODO: handle multiple material packages (OP3x) */ | |
1385 | for (i = 0; i < mxf->packages_count; i++) { | |
1386 | material_package = mxf_resolve_strong_ref(mxf, &mxf->packages_refs[i], MaterialPackage); | |
1387 | if (material_package) break; | |
1388 | } | |
1389 | if (!material_package) { | |
1390 | av_log(mxf->fc, AV_LOG_ERROR, "no material package found\n"); | |
1391 | return AVERROR_INVALIDDATA; | |
1392 | } | |
1393 | ||
1394 | for (i = 0; i < material_package->tracks_count; i++) { | |
1395 | MXFPackage *source_package = NULL; | |
1396 | MXFTrack *material_track = NULL; | |
1397 | MXFTrack *source_track = NULL; | |
1398 | MXFTrack *temp_track = NULL; | |
1399 | MXFDescriptor *descriptor = NULL; | |
1400 | MXFStructuralComponent *component = NULL; | |
1401 | MXFTimecodeComponent *mxf_tc = NULL; | |
1402 | UID *essence_container_ul = NULL; | |
1403 | const MXFCodecUL *codec_ul = NULL; | |
1404 | const MXFCodecUL *container_ul = NULL; | |
1405 | const MXFCodecUL *pix_fmt_ul = NULL; | |
1406 | AVStream *st; | |
1407 | AVTimecode tc; | |
1408 | int flags; | |
1409 | ||
1410 | if (!(material_track = mxf_resolve_strong_ref(mxf, &material_package->tracks_refs[i], Track))) { | |
1411 | av_log(mxf->fc, AV_LOG_ERROR, "could not resolve material track strong ref\n"); | |
1412 | continue; | |
1413 | } | |
1414 | ||
1415 | if ((component = mxf_resolve_strong_ref(mxf, &material_track->sequence_ref, TimecodeComponent))) { | |
1416 | mxf_tc = (MXFTimecodeComponent*)component; | |
1417 | flags = mxf_tc->drop_frame == 1 ? AV_TIMECODE_FLAG_DROPFRAME : 0; | |
1418 | if (av_timecode_init(&tc, mxf_tc->rate, flags, mxf_tc->start_frame, mxf->fc) == 0) { | |
1419 | mxf_add_timecode_metadata(&mxf->fc->metadata, "timecode", &tc); | |
1420 | } | |
1421 | } | |
1422 | ||
1423 | if (!(material_track->sequence = mxf_resolve_strong_ref(mxf, &material_track->sequence_ref, Sequence))) { | |
1424 | av_log(mxf->fc, AV_LOG_ERROR, "could not resolve material track sequence strong ref\n"); | |
1425 | continue; | |
1426 | } | |
1427 | ||
1428 | for (j = 0; j < material_track->sequence->structural_components_count; j++) { | |
1429 | component = mxf_resolve_strong_ref(mxf, &material_track->sequence->structural_components_refs[j], TimecodeComponent); | |
1430 | if (!component) | |
1431 | continue; | |
1432 | ||
1433 | mxf_tc = (MXFTimecodeComponent*)component; | |
1434 | flags = mxf_tc->drop_frame == 1 ? AV_TIMECODE_FLAG_DROPFRAME : 0; | |
1435 | if (av_timecode_init(&tc, mxf_tc->rate, flags, mxf_tc->start_frame, mxf->fc) == 0) { | |
1436 | mxf_add_timecode_metadata(&mxf->fc->metadata, "timecode", &tc); | |
1437 | break; | |
1438 | } | |
1439 | } | |
1440 | ||
1441 | /* TODO: handle multiple source clips */ | |
1442 | for (j = 0; j < material_track->sequence->structural_components_count; j++) { | |
1443 | component = mxf_resolve_strong_ref(mxf, &material_track->sequence->structural_components_refs[j], SourceClip); | |
1444 | if (!component) | |
1445 | continue; | |
1446 | ||
1447 | for (k = 0; k < mxf->packages_count; k++) { | |
1448 | temp_package = mxf_resolve_strong_ref(mxf, &mxf->packages_refs[k], SourcePackage); | |
1449 | if (!temp_package) | |
1450 | continue; | |
1451 | if (!memcmp(temp_package->package_uid, component->source_package_uid, 16)) { | |
1452 | source_package = temp_package; | |
1453 | break; | |
1454 | } | |
1455 | } | |
1456 | if (!source_package) { | |
1457 | av_dlog(mxf->fc, "material track %d: no corresponding source package found\n", material_track->track_id); | |
1458 | break; | |
1459 | } | |
1460 | for (k = 0; k < source_package->tracks_count; k++) { | |
1461 | if (!(temp_track = mxf_resolve_strong_ref(mxf, &source_package->tracks_refs[k], Track))) { | |
1462 | av_log(mxf->fc, AV_LOG_ERROR, "could not resolve source track strong ref\n"); | |
1463 | ret = AVERROR_INVALIDDATA; | |
1464 | goto fail_and_free; | |
1465 | } | |
1466 | if (temp_track->track_id == component->source_track_id) { | |
1467 | source_track = temp_track; | |
1468 | break; | |
1469 | } | |
1470 | } | |
1471 | if (!source_track) { | |
1472 | av_log(mxf->fc, AV_LOG_ERROR, "material track %d: no corresponding source track found\n", material_track->track_id); | |
1473 | break; | |
1474 | } | |
1475 | } | |
1476 | if (!source_track || !component) | |
1477 | continue; | |
1478 | ||
1479 | if (!(source_track->sequence = mxf_resolve_strong_ref(mxf, &source_track->sequence_ref, Sequence))) { | |
1480 | av_log(mxf->fc, AV_LOG_ERROR, "could not resolve source track sequence strong ref\n"); | |
1481 | ret = AVERROR_INVALIDDATA; | |
1482 | goto fail_and_free; | |
1483 | } | |
1484 | ||
1485 | /* 0001GL00.MXF.A1.mxf_opatom.mxf has the same SourcePackageID as 0001GL.MXF.V1.mxf_opatom.mxf | |
1486 | * This would result in both files appearing to have two streams. Work around this by sanity checking DataDefinition */ | |
1487 | if (memcmp(material_track->sequence->data_definition_ul, source_track->sequence->data_definition_ul, 16)) { | |
1488 | av_log(mxf->fc, AV_LOG_ERROR, "material track %d: DataDefinition mismatch\n", material_track->track_id); | |
1489 | continue; | |
1490 | } | |
1491 | ||
1492 | st = avformat_new_stream(mxf->fc, NULL); | |
1493 | if (!st) { | |
1494 | av_log(mxf->fc, AV_LOG_ERROR, "could not allocate stream\n"); | |
1495 | ret = AVERROR(ENOMEM); | |
1496 | goto fail_and_free; | |
1497 | } | |
1498 | st->id = source_track->track_id; | |
1499 | st->priv_data = source_track; | |
1500 | source_track->original_duration = st->duration = component->duration; | |
1501 | if (st->duration == -1) | |
1502 | st->duration = AV_NOPTS_VALUE; | |
1503 | st->start_time = component->start_position; | |
1504 | if (material_track->edit_rate.num <= 0 || | |
1505 | material_track->edit_rate.den <= 0) { | |
1506 | av_log(mxf->fc, AV_LOG_WARNING, | |
1507 | "Invalid edit rate (%d/%d) found on stream #%d, " | |
1508 | "defaulting to 25/1\n", | |
1509 | material_track->edit_rate.num, | |
1510 | material_track->edit_rate.den, st->index); | |
1511 | material_track->edit_rate = (AVRational){25, 1}; | |
1512 | } | |
1513 | avpriv_set_pts_info(st, 64, material_track->edit_rate.den, material_track->edit_rate.num); | |
1514 | ||
1515 | /* ensure SourceTrack EditRate == MaterialTrack EditRate since only | |
1516 | * the former is accessible via st->priv_data */ | |
1517 | source_track->edit_rate = material_track->edit_rate; | |
1518 | ||
1519 | PRINT_KEY(mxf->fc, "data definition ul", source_track->sequence->data_definition_ul); | |
1520 | codec_ul = mxf_get_codec_ul(ff_mxf_data_definition_uls, &source_track->sequence->data_definition_ul); | |
1521 | st->codec->codec_type = codec_ul->id; | |
1522 | ||
1523 | source_package->descriptor = mxf_resolve_strong_ref(mxf, &source_package->descriptor_ref, AnyType); | |
1524 | if (source_package->descriptor) { | |
1525 | if (source_package->descriptor->type == MultipleDescriptor) { | |
1526 | for (j = 0; j < source_package->descriptor->sub_descriptors_count; j++) { | |
1527 | MXFDescriptor *sub_descriptor = mxf_resolve_strong_ref(mxf, &source_package->descriptor->sub_descriptors_refs[j], Descriptor); | |
1528 | ||
1529 | if (!sub_descriptor) { | |
1530 | av_log(mxf->fc, AV_LOG_ERROR, "could not resolve sub descriptor strong ref\n"); | |
1531 | continue; | |
1532 | } | |
1533 | if (sub_descriptor->linked_track_id == source_track->track_id) { | |
1534 | descriptor = sub_descriptor; | |
1535 | break; | |
1536 | } | |
1537 | } | |
1538 | } else if (source_package->descriptor->type == Descriptor) | |
1539 | descriptor = source_package->descriptor; | |
1540 | } | |
1541 | if (!descriptor) { | |
1542 | av_log(mxf->fc, AV_LOG_INFO, "source track %d: stream %d, no descriptor found\n", source_track->track_id, st->index); | |
1543 | continue; | |
1544 | } | |
1545 | PRINT_KEY(mxf->fc, "essence codec ul", descriptor->essence_codec_ul); | |
1546 | PRINT_KEY(mxf->fc, "essence container ul", descriptor->essence_container_ul); | |
1547 | essence_container_ul = &descriptor->essence_container_ul; | |
1548 | /* HACK: replacing the original key with mxf_encrypted_essence_container | |
1549 | * is not allowed according to s429-6, try to find correct information anyway */ | |
1550 | if (IS_KLV_KEY(essence_container_ul, mxf_encrypted_essence_container)) { | |
1551 | av_log(mxf->fc, AV_LOG_INFO, "broken encrypted mxf file\n"); | |
1552 | for (k = 0; k < mxf->metadata_sets_count; k++) { | |
1553 | MXFMetadataSet *metadata = mxf->metadata_sets[k]; | |
1554 | if (metadata->type == CryptoContext) { | |
1555 | essence_container_ul = &((MXFCryptoContext *)metadata)->source_container_ul; | |
1556 | break; | |
1557 | } | |
1558 | } | |
1559 | } | |
1560 | ||
1561 | /* TODO: drop PictureEssenceCoding and SoundEssenceCompression, only check EssenceContainer */ | |
1562 | codec_ul = mxf_get_codec_ul(ff_mxf_codec_uls, &descriptor->essence_codec_ul); | |
1563 | st->codec->codec_id = (enum AVCodecID)codec_ul->id; | |
1564 | av_log(mxf->fc, AV_LOG_VERBOSE, "%s: Universal Label: ", | |
1565 | avcodec_get_name(st->codec->codec_id)); | |
1566 | for (k = 0; k < 16; k++) { | |
1567 | av_log(mxf->fc, AV_LOG_VERBOSE, "%.2x", | |
1568 | descriptor->essence_codec_ul[k]); | |
1569 | if (!(k+1 & 19) || k == 5) | |
1570 | av_log(mxf->fc, AV_LOG_VERBOSE, "."); | |
1571 | } | |
1572 | av_log(mxf->fc, AV_LOG_VERBOSE, "\n"); | |
1573 | ||
1574 | if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) { | |
1575 | source_track->intra_only = mxf_is_intra_only(descriptor); | |
1576 | container_ul = mxf_get_codec_ul(mxf_picture_essence_container_uls, essence_container_ul); | |
1577 | if (st->codec->codec_id == AV_CODEC_ID_NONE) | |
1578 | st->codec->codec_id = container_ul->id; | |
1579 | st->codec->width = descriptor->width; | |
1580 | st->codec->height = descriptor->height; /* Field height, not frame height */ | |
1581 | switch (descriptor->frame_layout) { | |
1582 | case SegmentedFrame: | |
1583 | /* This one is a weird layout I don't fully understand. */ | |
1584 | av_log(mxf->fc, AV_LOG_INFO, "SegmentedFrame layout isn't currently supported\n"); | |
1585 | break; | |
1586 | case FullFrame: | |
1587 | st->codec->field_order = AV_FIELD_PROGRESSIVE; | |
1588 | break; | |
1589 | case OneField: | |
1590 | /* Every other line is stored and needs to be duplicated. */ | |
1591 | av_log(mxf->fc, AV_LOG_INFO, "OneField frame layout isn't currently supported\n"); | |
1592 | break; /* The correct thing to do here is fall through, but by breaking we might be | |
1593 | able to decode some streams at half the vertical resolution, rather than not al all. | |
1594 | It's also for compatibility with the old behavior. */ | |
1595 | case MixedFields: | |
1596 | break; | |
1597 | case SeparateFields: | |
1598 | switch (descriptor->field_dominance) { | |
1599 | case MXF_TFF: | |
1600 | st->codec->field_order = AV_FIELD_TT; | |
1601 | break; | |
1602 | case MXF_BFF: | |
1603 | st->codec->field_order = AV_FIELD_BB; | |
1604 | break; | |
1605 | default: | |
1606 | avpriv_request_sample(mxf->fc, | |
1607 | "Field dominance %d support", | |
1608 | descriptor->field_dominance); | |
1609 | break; | |
1610 | } | |
1611 | /* Turn field height into frame height. */ | |
1612 | st->codec->height *= 2; | |
1613 | break; | |
1614 | default: | |
1615 | av_log(mxf->fc, AV_LOG_INFO, "Unknown frame layout type: %d\n", descriptor->frame_layout); | |
1616 | } | |
1617 | if (st->codec->codec_id == AV_CODEC_ID_RAWVIDEO) { | |
1618 | st->codec->pix_fmt = descriptor->pix_fmt; | |
1619 | if (st->codec->pix_fmt == AV_PIX_FMT_NONE) { | |
1620 | pix_fmt_ul = mxf_get_codec_ul(ff_mxf_pixel_format_uls, | |
1621 | &descriptor->essence_codec_ul); | |
1622 | st->codec->pix_fmt = (enum AVPixelFormat)pix_fmt_ul->id; | |
1623 | if (st->codec->pix_fmt == AV_PIX_FMT_NONE) { | |
1624 | /* support files created before RP224v10 by defaulting to UYVY422 | |
1625 | if subsampling is 4:2:2 and component depth is 8-bit */ | |
1626 | if (descriptor->horiz_subsampling == 2 && | |
1627 | descriptor->vert_subsampling == 1 && | |
1628 | descriptor->component_depth == 8) { | |
1629 | st->codec->pix_fmt = AV_PIX_FMT_UYVY422; | |
1630 | } | |
1631 | } | |
1632 | } | |
1633 | } | |
1634 | st->need_parsing = AVSTREAM_PARSE_HEADERS; | |
1635 | if (material_track->sequence->origin) { | |
1636 | av_dict_set_int(&st->metadata, "material_track_origin", material_track->sequence->origin, 0); | |
1637 | } | |
1638 | if (source_track->sequence->origin) { | |
1639 | av_dict_set_int(&st->metadata, "source_track_origin", source_track->sequence->origin, 0); | |
1640 | } | |
1641 | } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) { | |
1642 | container_ul = mxf_get_codec_ul(mxf_sound_essence_container_uls, essence_container_ul); | |
1643 | /* Only overwrite existing codec ID if it is unset or A-law, which is the default according to SMPTE RP 224. */ | |
1644 | if (st->codec->codec_id == AV_CODEC_ID_NONE || (st->codec->codec_id == AV_CODEC_ID_PCM_ALAW && (enum AVCodecID)container_ul->id != AV_CODEC_ID_NONE)) | |
1645 | st->codec->codec_id = (enum AVCodecID)container_ul->id; | |
1646 | st->codec->channels = descriptor->channels; | |
1647 | st->codec->bits_per_coded_sample = descriptor->bits_per_sample; | |
1648 | ||
1649 | if (descriptor->sample_rate.den > 0) { | |
1650 | st->codec->sample_rate = descriptor->sample_rate.num / descriptor->sample_rate.den; | |
1651 | avpriv_set_pts_info(st, 64, descriptor->sample_rate.den, descriptor->sample_rate.num); | |
1652 | } else { | |
1653 | av_log(mxf->fc, AV_LOG_WARNING, "invalid sample rate (%d/%d) " | |
1654 | "found for stream #%d, time base forced to 1/48000\n", | |
1655 | descriptor->sample_rate.num, descriptor->sample_rate.den, | |
1656 | st->index); | |
1657 | avpriv_set_pts_info(st, 64, 1, 48000); | |
1658 | } | |
1659 | ||
1660 | /* if duration is set, rescale it from EditRate to SampleRate */ | |
1661 | if (st->duration != AV_NOPTS_VALUE) | |
1662 | st->duration = av_rescale_q(st->duration, | |
1663 | av_inv_q(material_track->edit_rate), | |
1664 | st->time_base); | |
1665 | ||
1666 | /* TODO: implement AV_CODEC_ID_RAWAUDIO */ | |
1667 | if (st->codec->codec_id == AV_CODEC_ID_PCM_S16LE) { | |
1668 | if (descriptor->bits_per_sample > 16 && descriptor->bits_per_sample <= 24) | |
1669 | st->codec->codec_id = AV_CODEC_ID_PCM_S24LE; | |
1670 | else if (descriptor->bits_per_sample == 32) | |
1671 | st->codec->codec_id = AV_CODEC_ID_PCM_S32LE; | |
1672 | } else if (st->codec->codec_id == AV_CODEC_ID_PCM_S16BE) { | |
1673 | if (descriptor->bits_per_sample > 16 && descriptor->bits_per_sample <= 24) | |
1674 | st->codec->codec_id = AV_CODEC_ID_PCM_S24BE; | |
1675 | else if (descriptor->bits_per_sample == 32) | |
1676 | st->codec->codec_id = AV_CODEC_ID_PCM_S32BE; | |
1677 | } else if (st->codec->codec_id == AV_CODEC_ID_MP2) { | |
1678 | st->need_parsing = AVSTREAM_PARSE_FULL; | |
1679 | } | |
1680 | } else if (st->codec->codec_type == AVMEDIA_TYPE_DATA) { | |
1681 | int codec_id = mxf_get_codec_ul(mxf_data_essence_container_uls, | |
1682 | essence_container_ul)->id; | |
1683 | if (codec_id >= 0 && | |
1684 | codec_id < FF_ARRAY_ELEMS(mxf_data_essence_descriptor)) { | |
1685 | av_dict_set(&st->metadata, "data_type", | |
1686 | mxf_data_essence_descriptor[codec_id], 0); | |
1687 | } | |
1688 | } | |
1689 | if (descriptor->extradata) { | |
1690 | if (!ff_alloc_extradata(st->codec, descriptor->extradata_size)) { | |
1691 | memcpy(st->codec->extradata, descriptor->extradata, descriptor->extradata_size); | |
1692 | } | |
1693 | } else if (st->codec->codec_id == AV_CODEC_ID_H264) { | |
1694 | ret = ff_generate_avci_extradata(st); | |
1695 | if (ret < 0) | |
1696 | return ret; | |
1697 | } | |
1698 | if (st->codec->codec_type != AVMEDIA_TYPE_DATA && (*essence_container_ul)[15] > 0x01) { | |
1699 | /* TODO: decode timestamps */ | |
1700 | st->need_parsing = AVSTREAM_PARSE_TIMESTAMPS; | |
1701 | } | |
1702 | } | |
1703 | ||
1704 | ret = 0; | |
1705 | fail_and_free: | |
1706 | return ret; | |
1707 | } | |
1708 | ||
1709 | static int mxf_read_utf16_string(AVIOContext *pb, int size, char** str) | |
1710 | { | |
1711 | int ret; | |
1712 | size_t buf_size; | |
1713 | ||
1714 | if (size < 0) | |
1715 | return AVERROR(EINVAL); | |
1716 | ||
1717 | buf_size = size + size / 2 + 1; | |
1718 | *str = av_malloc(buf_size); | |
1719 | if (!*str) | |
1720 | return AVERROR(ENOMEM); | |
1721 | ||
1722 | if ((ret = avio_get_str16be(pb, size, *str, buf_size)) < 0) { | |
1723 | av_freep(str); | |
1724 | return ret; | |
1725 | } | |
1726 | ||
1727 | return ret; | |
1728 | } | |
1729 | ||
1730 | static int mxf_uid_to_str(UID uid, char **str) | |
1731 | { | |
1732 | int i; | |
1733 | char *p; | |
1734 | p = *str = av_mallocz(sizeof(UID) * 2 + 4 + 1); | |
1735 | if (!p) | |
1736 | return AVERROR(ENOMEM); | |
1737 | for (i = 0; i < sizeof(UID); i++) { | |
1738 | snprintf(p, 2 + 1, "%.2x", uid[i]); | |
1739 | p += 2; | |
1740 | if (i == 3 || i == 5 || i == 7 || i == 9) { | |
1741 | snprintf(p, 1 + 1, "-"); | |
1742 | p++; | |
1743 | } | |
1744 | } | |
1745 | return 0; | |
1746 | } | |
1747 | ||
1748 | static int mxf_timestamp_to_str(uint64_t timestamp, char **str) | |
1749 | { | |
1750 | struct tm time = { 0 }; | |
1751 | time.tm_year = (timestamp >> 48) - 1900; | |
1752 | time.tm_mon = (timestamp >> 40 & 0xFF) - 1; | |
1753 | time.tm_mday = (timestamp >> 32 & 0xFF); | |
1754 | time.tm_hour = (timestamp >> 24 & 0xFF); | |
1755 | time.tm_min = (timestamp >> 16 & 0xFF); | |
1756 | time.tm_sec = (timestamp >> 8 & 0xFF); | |
1757 | ||
1758 | /* msvcrt versions of strftime calls the invalid parameter handler | |
1759 | * (aborting the process if one isn't set) if the parameters are out | |
1760 | * of range. */ | |
1761 | time.tm_mon = av_clip(time.tm_mon, 0, 11); | |
1762 | time.tm_mday = av_clip(time.tm_mday, 1, 31); | |
1763 | time.tm_hour = av_clip(time.tm_hour, 0, 23); | |
1764 | time.tm_min = av_clip(time.tm_min, 0, 59); | |
1765 | time.tm_sec = av_clip(time.tm_sec, 0, 59); | |
1766 | ||
1767 | *str = av_mallocz(32); | |
1768 | if (!*str) | |
1769 | return AVERROR(ENOMEM); | |
1770 | strftime(*str, 32, "%Y-%m-%d %H:%M:%S", &time); | |
1771 | ||
1772 | return 0; | |
1773 | } | |
1774 | ||
1775 | #define SET_STR_METADATA(pb, name, str) do { \ | |
1776 | if ((ret = mxf_read_utf16_string(pb, size, &str)) < 0) \ | |
1777 | return ret; \ | |
1778 | av_dict_set(&s->metadata, name, str, AV_DICT_DONT_STRDUP_VAL); \ | |
1779 | } while (0) | |
1780 | ||
1781 | #define SET_UID_METADATA(pb, name, var, str) do { \ | |
1782 | avio_read(pb, var, 16); \ | |
1783 | if ((ret = mxf_uid_to_str(var, &str)) < 0) \ | |
1784 | return ret; \ | |
1785 | av_dict_set(&s->metadata, name, str, AV_DICT_DONT_STRDUP_VAL); \ | |
1786 | } while (0) | |
1787 | ||
1788 | #define SET_TS_METADATA(pb, name, var, str) do { \ | |
1789 | var = avio_rb64(pb); \ | |
1790 | if ((ret = mxf_timestamp_to_str(var, &str)) < 0) \ | |
1791 | return ret; \ | |
1792 | av_dict_set(&s->metadata, name, str, AV_DICT_DONT_STRDUP_VAL); \ | |
1793 | } while (0) | |
1794 | ||
1795 | static int mxf_read_identification_metadata(void *arg, AVIOContext *pb, int tag, int size, UID _uid, int64_t klv_offset) | |
1796 | { | |
1797 | MXFContext *mxf = arg; | |
1798 | AVFormatContext *s = mxf->fc; | |
1799 | int ret; | |
1800 | UID uid = { 0 }; | |
1801 | char *str = NULL; | |
1802 | uint64_t ts; | |
1803 | switch (tag) { | |
1804 | case 0x3C01: | |
1805 | SET_STR_METADATA(pb, "company_name", str); | |
1806 | break; | |
1807 | case 0x3C02: | |
1808 | SET_STR_METADATA(pb, "product_name", str); | |
1809 | break; | |
1810 | case 0x3C04: | |
1811 | SET_STR_METADATA(pb, "product_version", str); | |
1812 | break; | |
1813 | case 0x3C05: | |
1814 | SET_UID_METADATA(pb, "product_uid", uid, str); | |
1815 | break; | |
1816 | case 0x3C06: | |
1817 | SET_TS_METADATA(pb, "modification_date", ts, str); | |
1818 | break; | |
1819 | case 0x3C08: | |
1820 | SET_STR_METADATA(pb, "application_platform", str); | |
1821 | break; | |
1822 | case 0x3C09: | |
1823 | SET_UID_METADATA(pb, "generation_uid", uid, str); | |
1824 | break; | |
1825 | case 0x3C0A: | |
1826 | SET_UID_METADATA(pb, "uid", uid, str); | |
1827 | break; | |
1828 | } | |
1829 | return 0; | |
1830 | } | |
1831 | ||
1832 | static const MXFMetadataReadTableEntry mxf_metadata_read_table[] = { | |
1833 | { { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x05,0x01,0x00 }, mxf_read_primer_pack }, | |
1834 | { { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02,0x01,0x00 }, mxf_read_partition_pack }, | |
1835 | { { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02,0x02,0x00 }, mxf_read_partition_pack }, | |
1836 | { { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02,0x03,0x00 }, mxf_read_partition_pack }, | |
1837 | { { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02,0x04,0x00 }, mxf_read_partition_pack }, | |
1838 | { { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x03,0x01,0x00 }, mxf_read_partition_pack }, | |
1839 | { { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x03,0x02,0x00 }, mxf_read_partition_pack }, | |
1840 | { { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x03,0x03,0x00 }, mxf_read_partition_pack }, | |
1841 | { { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x03,0x04,0x00 }, mxf_read_partition_pack }, | |
1842 | { { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x04,0x02,0x00 }, mxf_read_partition_pack }, | |
1843 | { { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x04,0x04,0x00 }, mxf_read_partition_pack }, | |
1844 | { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x30,0x00 }, mxf_read_identification_metadata }, | |
1845 | { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x18,0x00 }, mxf_read_content_storage, 0, AnyType }, | |
1846 | { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x37,0x00 }, mxf_read_source_package, sizeof(MXFPackage), SourcePackage }, | |
1847 | { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x36,0x00 }, mxf_read_material_package, sizeof(MXFPackage), MaterialPackage }, | |
1848 | { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x0f,0x00 }, mxf_read_sequence, sizeof(MXFSequence), Sequence }, | |
1849 | { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x11,0x00 }, mxf_read_source_clip, sizeof(MXFStructuralComponent), SourceClip }, | |
1850 | { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x44,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), MultipleDescriptor }, | |
1851 | { { 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 */ | |
1852 | { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x28,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* CDCI */ | |
1853 | { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x29,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* RGBA */ | |
1854 | { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* MPEG 2 Video */ | |
1855 | { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* Wave */ | |
1856 | { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* AES3 */ | |
1857 | { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* MPEG2VideoDescriptor */ | |
1858 | { { 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 */ | |
1859 | { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x5e,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* MPEG2AudioDescriptor */ | |
1860 | { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x3A,0x00 }, mxf_read_track, sizeof(MXFTrack), Track }, /* Static Track */ | |
1861 | { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x3B,0x00 }, mxf_read_track, sizeof(MXFTrack), Track }, /* Generic Track */ | |
1862 | { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x14,0x00 }, mxf_read_timecode_component, sizeof(MXFTimecodeComponent), TimecodeComponent }, | |
1863 | { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x04,0x01,0x02,0x02,0x00,0x00 }, mxf_read_cryptographic_context, sizeof(MXFCryptoContext), CryptoContext }, | |
1864 | { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x10,0x01,0x00 }, mxf_read_index_table_segment, sizeof(MXFIndexTableSegment), IndexTableSegment }, | |
1865 | { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, NULL, 0, AnyType }, | |
1866 | }; | |
1867 | ||
1868 | static int mxf_read_local_tags(MXFContext *mxf, KLVPacket *klv, MXFMetadataReadFunc *read_child, int ctx_size, enum MXFMetadataSetType type) | |
1869 | { | |
1870 | AVIOContext *pb = mxf->fc->pb; | |
1871 | MXFMetadataSet *ctx = ctx_size ? av_mallocz(ctx_size) : mxf; | |
1872 | uint64_t klv_end = avio_tell(pb) + klv->length; | |
1873 | ||
1874 | if (!ctx) | |
1875 | return AVERROR(ENOMEM); | |
1876 | while (avio_tell(pb) + 4 < klv_end && !avio_feof(pb)) { | |
1877 | int ret; | |
1878 | int tag = avio_rb16(pb); | |
1879 | int size = avio_rb16(pb); /* KLV specified by 0x53 */ | |
1880 | uint64_t next = avio_tell(pb) + size; | |
1881 | UID uid = {0}; | |
1882 | ||
1883 | av_dlog(mxf->fc, "local tag %#04x size %d\n", tag, size); | |
1884 | if (!size) { /* ignore empty tag, needed for some files with empty UMID tag */ | |
1885 | av_log(mxf->fc, AV_LOG_ERROR, "local tag %#04x with 0 size\n", tag); | |
1886 | continue; | |
1887 | } | |
1888 | if (tag > 0x7FFF) { /* dynamic tag */ | |
1889 | int i; | |
1890 | for (i = 0; i < mxf->local_tags_count; i++) { | |
1891 | int local_tag = AV_RB16(mxf->local_tags+i*18); | |
1892 | if (local_tag == tag) { | |
1893 | memcpy(uid, mxf->local_tags+i*18+2, 16); | |
1894 | av_dlog(mxf->fc, "local tag %#04x\n", local_tag); | |
1895 | PRINT_KEY(mxf->fc, "uid", uid); | |
1896 | } | |
1897 | } | |
1898 | } | |
1899 | if (ctx_size && tag == 0x3C0A) | |
1900 | avio_read(pb, ctx->uid, 16); | |
1901 | else if ((ret = read_child(ctx, pb, tag, size, uid, -1)) < 0) | |
1902 | return ret; | |
1903 | ||
1904 | /* Accept the 64k local set limit being exceeded (Avid). Don't accept | |
1905 | * it extending past the end of the KLV though (zzuf5.mxf). */ | |
1906 | if (avio_tell(pb) > klv_end) { | |
1907 | if (ctx_size) | |
1908 | av_free(ctx); | |
1909 | ||
1910 | av_log(mxf->fc, AV_LOG_ERROR, | |
1911 | "local tag %#04x extends past end of local set @ %#"PRIx64"\n", | |
1912 | tag, klv->offset); | |
1913 | return AVERROR_INVALIDDATA; | |
1914 | } else if (avio_tell(pb) <= next) /* only seek forward, else this can loop for a long time */ | |
1915 | avio_seek(pb, next, SEEK_SET); | |
1916 | } | |
1917 | if (ctx_size) ctx->type = type; | |
1918 | return ctx_size ? mxf_add_metadata_set(mxf, ctx) : 0; | |
1919 | } | |
1920 | ||
1921 | /** | |
1922 | * Seeks to the previous partition, if possible | |
1923 | * @return <= 0 if we should stop parsing, > 0 if we should keep going | |
1924 | */ | |
1925 | static int mxf_seek_to_previous_partition(MXFContext *mxf) | |
1926 | { | |
1927 | AVIOContext *pb = mxf->fc->pb; | |
1928 | ||
1929 | if (!mxf->current_partition || | |
1930 | mxf->run_in + mxf->current_partition->previous_partition <= mxf->last_forward_tell) | |
1931 | return 0; /* we've parsed all partitions */ | |
1932 | ||
1933 | /* seek to previous partition */ | |
1934 | avio_seek(pb, mxf->run_in + mxf->current_partition->previous_partition, SEEK_SET); | |
1935 | mxf->current_partition = NULL; | |
1936 | ||
1937 | av_dlog(mxf->fc, "seeking to previous partition\n"); | |
1938 | ||
1939 | return 1; | |
1940 | } | |
1941 | ||
1942 | /** | |
1943 | * Called when essence is encountered | |
1944 | * @return <= 0 if we should stop parsing, > 0 if we should keep going | |
1945 | */ | |
1946 | static int mxf_parse_handle_essence(MXFContext *mxf) | |
1947 | { | |
1948 | AVIOContext *pb = mxf->fc->pb; | |
1949 | int64_t ret; | |
1950 | ||
1951 | if (mxf->parsing_backward) { | |
1952 | return mxf_seek_to_previous_partition(mxf); | |
1953 | } else { | |
1954 | uint64_t offset = mxf->footer_partition ? mxf->footer_partition | |
1955 | : mxf->last_partition; | |
1956 | ||
1957 | if (!offset) { | |
1958 | av_dlog(mxf->fc, "no last partition\n"); | |
1959 | return 0; | |
1960 | } | |
1961 | ||
1962 | av_dlog(mxf->fc, "seeking to last partition\n"); | |
1963 | ||
1964 | /* remember where we were so we don't end up seeking further back than this */ | |
1965 | mxf->last_forward_tell = avio_tell(pb); | |
1966 | ||
1967 | if (!pb->seekable) { | |
1968 | av_log(mxf->fc, AV_LOG_INFO, "file is not seekable - not parsing last partition\n"); | |
1969 | return -1; | |
1970 | } | |
1971 | ||
1972 | /* seek to last partition and parse backward */ | |
1973 | if ((ret = avio_seek(pb, mxf->run_in + offset, SEEK_SET)) < 0) { | |
1974 | av_log(mxf->fc, AV_LOG_ERROR, | |
1975 | "failed to seek to last partition @ 0x%" PRIx64 | |
1976 | " (%"PRId64") - partial file?\n", | |
1977 | mxf->run_in + offset, ret); | |
1978 | return ret; | |
1979 | } | |
1980 | ||
1981 | mxf->current_partition = NULL; | |
1982 | mxf->parsing_backward = 1; | |
1983 | } | |
1984 | ||
1985 | return 1; | |
1986 | } | |
1987 | ||
1988 | /** | |
1989 | * Called when the next partition or EOF is encountered | |
1990 | * @return <= 0 if we should stop parsing, > 0 if we should keep going | |
1991 | */ | |
1992 | static int mxf_parse_handle_partition_or_eof(MXFContext *mxf) | |
1993 | { | |
1994 | return mxf->parsing_backward ? mxf_seek_to_previous_partition(mxf) : 1; | |
1995 | } | |
1996 | ||
1997 | /** | |
1998 | * Figures out the proper offset and length of the essence container in each partition | |
1999 | */ | |
2000 | static void mxf_compute_essence_containers(MXFContext *mxf) | |
2001 | { | |
2002 | int x; | |
2003 | ||
2004 | /* everything is already correct */ | |
2005 | if (mxf->op == OPAtom) | |
2006 | return; | |
2007 | ||
2008 | for (x = 0; x < mxf->partitions_count; x++) { | |
2009 | MXFPartition *p = &mxf->partitions[x]; | |
2010 | ||
2011 | if (!p->body_sid) | |
2012 | continue; /* BodySID == 0 -> no essence */ | |
2013 | ||
2014 | if (x >= mxf->partitions_count - 1) | |
2015 | break; /* last partition - can't compute length (and we don't need to) */ | |
2016 | ||
2017 | /* essence container spans to the next partition */ | |
2018 | p->essence_length = mxf->partitions[x+1].this_partition - p->essence_offset; | |
2019 | ||
2020 | if (p->essence_length < 0) { | |
2021 | /* next ThisPartition < essence_offset */ | |
2022 | p->essence_length = 0; | |
2023 | av_log(mxf->fc, AV_LOG_ERROR, | |
2024 | "partition %i: bad ThisPartition = %"PRIX64"\n", | |
2025 | x+1, mxf->partitions[x+1].this_partition); | |
2026 | } | |
2027 | } | |
2028 | } | |
2029 | ||
2030 | static int64_t round_to_kag(int64_t position, int kag_size) | |
2031 | { | |
2032 | /* TODO: account for run-in? the spec isn't clear whether KAG should account for it */ | |
2033 | /* NOTE: kag_size may be any integer between 1 - 2^10 */ | |
2034 | int64_t ret = (position / kag_size) * kag_size; | |
2035 | return ret == position ? ret : ret + kag_size; | |
2036 | } | |
2037 | ||
2038 | static int is_pcm(enum AVCodecID codec_id) | |
2039 | { | |
2040 | /* we only care about "normal" PCM codecs until we get samples */ | |
2041 | return codec_id >= AV_CODEC_ID_PCM_S16LE && codec_id < AV_CODEC_ID_PCM_S24DAUD; | |
2042 | } | |
2043 | ||
2044 | /** | |
2045 | * Deal with the case where for some audio atoms EditUnitByteCount is | |
2046 | * very small (2, 4..). In those cases we should read more than one | |
2047 | * sample per call to mxf_read_packet(). | |
2048 | */ | |
2049 | static void mxf_handle_small_eubc(AVFormatContext *s) | |
2050 | { | |
2051 | MXFContext *mxf = s->priv_data; | |
2052 | ||
2053 | /* assuming non-OPAtom == frame wrapped | |
2054 | * no sane writer would wrap 2 byte PCM packets with 20 byte headers.. */ | |
2055 | if (mxf->op != OPAtom) | |
2056 | return; | |
2057 | ||
2058 | /* expect PCM with exactly one index table segment and a small (< 32) EUBC */ | |
2059 | if (s->nb_streams != 1 || | |
2060 | s->streams[0]->codec->codec_type != AVMEDIA_TYPE_AUDIO || | |
2061 | !is_pcm(s->streams[0]->codec->codec_id) || | |
2062 | mxf->nb_index_tables != 1 || | |
2063 | mxf->index_tables[0].nb_segments != 1 || | |
2064 | mxf->index_tables[0].segments[0]->edit_unit_byte_count >= 32) | |
2065 | return; | |
2066 | ||
2067 | /* arbitrarily default to 48 kHz PAL audio frame size */ | |
2068 | /* TODO: We could compute this from the ratio between the audio | |
2069 | * and video edit rates for 48 kHz NTSC we could use the | |
2070 | * 1802-1802-1802-1802-1801 pattern. */ | |
2071 | mxf->edit_units_per_packet = 1920; | |
2072 | } | |
2073 | ||
2074 | static void mxf_read_random_index_pack(AVFormatContext *s) | |
2075 | { | |
2076 | MXFContext *mxf = s->priv_data; | |
2077 | uint32_t length; | |
2078 | int64_t file_size; | |
2079 | KLVPacket klv; | |
2080 | ||
2081 | if (!s->pb->seekable) | |
2082 | return; | |
2083 | ||
2084 | file_size = avio_size(s->pb); | |
2085 | avio_seek(s->pb, file_size - 4, SEEK_SET); | |
2086 | length = avio_rb32(s->pb); | |
2087 | if (length <= 32 || length >= FFMIN(file_size, INT_MAX)) | |
2088 | goto end; | |
2089 | avio_seek(s->pb, file_size - length, SEEK_SET); | |
2090 | if (klv_read_packet(&klv, s->pb) < 0 || | |
2091 | !IS_KLV_KEY(klv.key, mxf_random_index_pack_key) || | |
2092 | klv.length != length - 20) | |
2093 | goto end; | |
2094 | ||
2095 | avio_skip(s->pb, klv.length - 12); | |
2096 | mxf->last_partition = avio_rb64(s->pb); | |
2097 | ||
2098 | end: | |
2099 | avio_seek(s->pb, mxf->run_in, SEEK_SET); | |
2100 | } | |
2101 | ||
2102 | static int mxf_read_header(AVFormatContext *s) | |
2103 | { | |
2104 | MXFContext *mxf = s->priv_data; | |
2105 | KLVPacket klv; | |
2106 | int64_t essence_offset = 0; | |
2107 | int64_t last_pos = -1; | |
2108 | uint64_t last_pos_index = 1; | |
2109 | int ret; | |
2110 | ||
2111 | mxf->last_forward_tell = INT64_MAX; | |
2112 | mxf->edit_units_per_packet = 1; | |
2113 | ||
2114 | if (!mxf_read_sync(s->pb, mxf_header_partition_pack_key, 14)) { | |
2115 | av_log(s, AV_LOG_ERROR, "could not find header partition pack key\n"); | |
2116 | return AVERROR_INVALIDDATA; | |
2117 | } | |
2118 | avio_seek(s->pb, -14, SEEK_CUR); | |
2119 | mxf->fc = s; | |
2120 | mxf->run_in = avio_tell(s->pb); | |
2121 | ||
2122 | mxf_read_random_index_pack(s); | |
2123 | ||
2124 | while (!avio_feof(s->pb)) { | |
2125 | const MXFMetadataReadTableEntry *metadata; | |
2126 | if (avio_tell(s->pb) == last_pos) { | |
2127 | av_log(mxf->fc, AV_LOG_ERROR, "MXF structure loop detected\n"); | |
2128 | return AVERROR_INVALIDDATA; | |
2129 | } | |
2130 | if ((1ULL<<61) % last_pos_index++ == 0) | |
2131 | last_pos = avio_tell(s->pb); | |
2132 | if (klv_read_packet(&klv, s->pb) < 0) { | |
2133 | /* EOF - seek to previous partition or stop */ | |
2134 | if(mxf_parse_handle_partition_or_eof(mxf) <= 0) | |
2135 | break; | |
2136 | else | |
2137 | continue; | |
2138 | } | |
2139 | ||
2140 | PRINT_KEY(s, "read header", klv.key); | |
2141 | av_dlog(s, "size %"PRIu64" offset %#"PRIx64"\n", klv.length, klv.offset); | |
2142 | if (IS_KLV_KEY(klv.key, mxf_encrypted_triplet_key) || | |
2143 | IS_KLV_KEY(klv.key, mxf_essence_element_key) || | |
2144 | IS_KLV_KEY(klv.key, mxf_avid_essence_element_key) || | |
2145 | IS_KLV_KEY(klv.key, mxf_system_item_key)) { | |
2146 | ||
2147 | if (!mxf->current_partition) { | |
2148 | av_log(mxf->fc, AV_LOG_ERROR, "found essence prior to first PartitionPack\n"); | |
2149 | return AVERROR_INVALIDDATA; | |
2150 | } | |
2151 | ||
2152 | if (!mxf->current_partition->essence_offset) { | |
2153 | /* for OP1a we compute essence_offset | |
2154 | * for OPAtom we point essence_offset after the KL (usually op1a_essence_offset + 20 or 25) | |
2155 | * TODO: for OP1a we could eliminate this entire if statement, always stopping parsing at op1a_essence_offset | |
2156 | * for OPAtom we still need the actual essence_offset though (the KL's length can vary) | |
2157 | */ | |
2158 | int64_t op1a_essence_offset = | |
2159 | round_to_kag(mxf->current_partition->this_partition + | |
2160 | mxf->current_partition->pack_length, mxf->current_partition->kag_size) + | |
2161 | round_to_kag(mxf->current_partition->header_byte_count, mxf->current_partition->kag_size) + | |
2162 | round_to_kag(mxf->current_partition->index_byte_count, mxf->current_partition->kag_size); | |
2163 | ||
2164 | if (mxf->op == OPAtom) { | |
2165 | /* point essence_offset to the actual data | |
2166 | * OPAtom has all the essence in one big KLV | |
2167 | */ | |
2168 | mxf->current_partition->essence_offset = avio_tell(s->pb); | |
2169 | mxf->current_partition->essence_length = klv.length; | |
2170 | } else { | |
2171 | /* NOTE: op1a_essence_offset may be less than to klv.offset (C0023S01.mxf) */ | |
2172 | mxf->current_partition->essence_offset = op1a_essence_offset; | |
2173 | } | |
2174 | } | |
2175 | ||
2176 | if (!essence_offset) | |
2177 | essence_offset = klv.offset; | |
2178 | ||
2179 | /* seek to footer, previous partition or stop */ | |
2180 | if (mxf_parse_handle_essence(mxf) <= 0) | |
2181 | break; | |
2182 | continue; | |
2183 | } else if (!memcmp(klv.key, mxf_header_partition_pack_key, 13) && | |
2184 | klv.key[13] >= 2 && klv.key[13] <= 4 && mxf->current_partition) { | |
2185 | /* next partition pack - keep going, seek to previous partition or stop */ | |
2186 | if(mxf_parse_handle_partition_or_eof(mxf) <= 0) | |
2187 | break; | |
2188 | else if (mxf->parsing_backward) | |
2189 | continue; | |
2190 | /* we're still parsing forward. proceed to parsing this partition pack */ | |
2191 | } | |
2192 | ||
2193 | for (metadata = mxf_metadata_read_table; metadata->read; metadata++) { | |
2194 | if (IS_KLV_KEY(klv.key, metadata->key)) { | |
2195 | int res; | |
2196 | if (klv.key[5] == 0x53) { | |
2197 | res = mxf_read_local_tags(mxf, &klv, metadata->read, metadata->ctx_size, metadata->type); | |
2198 | } else { | |
2199 | uint64_t next = avio_tell(s->pb) + klv.length; | |
2200 | res = metadata->read(mxf, s->pb, 0, klv.length, klv.key, klv.offset); | |
2201 | ||
2202 | /* only seek forward, else this can loop for a long time */ | |
2203 | if (avio_tell(s->pb) > next) { | |
2204 | av_log(s, AV_LOG_ERROR, "read past end of KLV @ %#"PRIx64"\n", | |
2205 | klv.offset); | |
2206 | return AVERROR_INVALIDDATA; | |
2207 | } | |
2208 | ||
2209 | avio_seek(s->pb, next, SEEK_SET); | |
2210 | } | |
2211 | if (res < 0) { | |
2212 | av_log(s, AV_LOG_ERROR, "error reading header metadata\n"); | |
2213 | return res; | |
2214 | } | |
2215 | break; | |
2216 | } else { | |
2217 | av_log(s, AV_LOG_VERBOSE, "Dark key " PRIxUID "\n", | |
2218 | UID_ARG(klv.key)); | |
2219 | } | |
2220 | } | |
2221 | if (!metadata->read) | |
2222 | avio_skip(s->pb, klv.length); | |
2223 | } | |
2224 | /* FIXME avoid seek */ | |
2225 | if (!essence_offset) { | |
2226 | av_log(s, AV_LOG_ERROR, "no essence\n"); | |
2227 | return AVERROR_INVALIDDATA; | |
2228 | } | |
2229 | avio_seek(s->pb, essence_offset, SEEK_SET); | |
2230 | ||
2231 | mxf_compute_essence_containers(mxf); | |
2232 | ||
2233 | /* we need to do this before computing the index tables | |
2234 | * to be able to fill in zero IndexDurations with st->duration */ | |
2235 | if ((ret = mxf_parse_structural_metadata(mxf)) < 0) | |
2236 | goto fail; | |
2237 | ||
2238 | if ((ret = mxf_compute_index_tables(mxf)) < 0) | |
2239 | goto fail; | |
2240 | ||
2241 | if (mxf->nb_index_tables > 1) { | |
2242 | /* TODO: look up which IndexSID to use via EssenceContainerData */ | |
2243 | av_log(mxf->fc, AV_LOG_INFO, "got %i index tables - only the first one (IndexSID %i) will be used\n", | |
2244 | mxf->nb_index_tables, mxf->index_tables[0].index_sid); | |
2245 | } else if (mxf->nb_index_tables == 0 && mxf->op == OPAtom) { | |
2246 | av_log(mxf->fc, AV_LOG_ERROR, "cannot demux OPAtom without an index\n"); | |
2247 | ret = AVERROR_INVALIDDATA; | |
2248 | goto fail; | |
2249 | } | |
2250 | ||
2251 | mxf_handle_small_eubc(s); | |
2252 | ||
2253 | return 0; | |
2254 | fail: | |
2255 | mxf_read_close(s); | |
2256 | ||
2257 | return ret; | |
2258 | } | |
2259 | ||
2260 | /** | |
2261 | * Sets mxf->current_edit_unit based on what offset we're currently at. | |
2262 | * @return next_ofs if OK, <0 on error | |
2263 | */ | |
2264 | static int64_t mxf_set_current_edit_unit(MXFContext *mxf, int64_t current_offset) | |
2265 | { | |
2266 | int64_t last_ofs = -1, next_ofs = -1; | |
2267 | MXFIndexTable *t = &mxf->index_tables[0]; | |
2268 | ||
2269 | /* this is called from the OP1a demuxing logic, which means there | |
2270 | * may be no index tables */ | |
2271 | if (mxf->nb_index_tables <= 0) | |
2272 | return -1; | |
2273 | ||
2274 | /* find mxf->current_edit_unit so that the next edit unit starts ahead of current_offset */ | |
2275 | while (mxf->current_edit_unit >= 0) { | |
2276 | if (mxf_edit_unit_absolute_offset(mxf, t, mxf->current_edit_unit + 1, NULL, &next_ofs, 0) < 0) | |
2277 | return -1; | |
2278 | ||
2279 | if (next_ofs <= last_ofs) { | |
2280 | /* large next_ofs didn't change or current_edit_unit wrapped | |
2281 | * around this fixes the infinite loop on zzuf3.mxf */ | |
2282 | av_log(mxf->fc, AV_LOG_ERROR, | |
2283 | "next_ofs didn't change. not deriving packet timestamps\n"); | |
2284 | return -1; | |
2285 | } | |
2286 | ||
2287 | if (next_ofs > current_offset) | |
2288 | break; | |
2289 | ||
2290 | last_ofs = next_ofs; | |
2291 | mxf->current_edit_unit++; | |
2292 | } | |
2293 | ||
2294 | /* not checking mxf->current_edit_unit >= t->nb_ptses here since CBR files may lack IndexEntryArrays */ | |
2295 | if (mxf->current_edit_unit < 0) | |
2296 | return -1; | |
2297 | ||
2298 | return next_ofs; | |
2299 | } | |
2300 | ||
2301 | static int mxf_compute_sample_count(MXFContext *mxf, int stream_index, | |
2302 | uint64_t *sample_count) | |
2303 | { | |
2304 | int i, total = 0, size = 0; | |
2305 | AVStream *st = mxf->fc->streams[stream_index]; | |
2306 | MXFTrack *track = st->priv_data; | |
2307 | AVRational time_base = av_inv_q(track->edit_rate); | |
2308 | AVRational sample_rate = av_inv_q(st->time_base); | |
2309 | const MXFSamplesPerFrame *spf = NULL; | |
2310 | ||
2311 | if ((sample_rate.num / sample_rate.den) == 48000) | |
2312 | spf = ff_mxf_get_samples_per_frame(mxf->fc, time_base); | |
2313 | if (!spf) { | |
2314 | int remainder = (sample_rate.num * time_base.num) % | |
2315 | (time_base.den * sample_rate.den); | |
2316 | *sample_count = av_q2d(av_mul_q((AVRational){mxf->current_edit_unit, 1}, | |
2317 | av_mul_q(sample_rate, time_base))); | |
2318 | if (remainder) | |
2319 | av_log(mxf->fc, AV_LOG_WARNING, | |
2320 | "seeking detected on stream #%d with time base (%d/%d) and " | |
2321 | "sample rate (%d/%d), audio pts won't be accurate.\n", | |
2322 | stream_index, time_base.num, time_base.den, | |
2323 | sample_rate.num, sample_rate.den); | |
2324 | return 0; | |
2325 | } | |
2326 | ||
2327 | while (spf->samples_per_frame[size]) { | |
2328 | total += spf->samples_per_frame[size]; | |
2329 | size++; | |
2330 | } | |
2331 | ||
2332 | av_assert2(size); | |
2333 | ||
2334 | *sample_count = (mxf->current_edit_unit / size) * (uint64_t)total; | |
2335 | for (i = 0; i < mxf->current_edit_unit % size; i++) { | |
2336 | *sample_count += spf->samples_per_frame[i]; | |
2337 | } | |
2338 | ||
2339 | return 0; | |
2340 | } | |
2341 | ||
2342 | static int mxf_set_audio_pts(MXFContext *mxf, AVCodecContext *codec, | |
2343 | AVPacket *pkt) | |
2344 | { | |
2345 | MXFTrack *track = mxf->fc->streams[pkt->stream_index]->priv_data; | |
2346 | int64_t bits_per_sample = codec->bits_per_coded_sample; | |
2347 | ||
2348 | if (!bits_per_sample) | |
2349 | bits_per_sample = av_get_bits_per_sample(codec->codec_id); | |
2350 | ||
2351 | pkt->pts = track->sample_count; | |
2352 | ||
2353 | if ( codec->channels <= 0 | |
2354 | || bits_per_sample <= 0 | |
2355 | || codec->channels * (int64_t)bits_per_sample < 8) | |
2356 | return AVERROR(EINVAL); | |
2357 | track->sample_count += pkt->size / (codec->channels * (int64_t)bits_per_sample / 8); | |
2358 | return 0; | |
2359 | } | |
2360 | ||
2361 | static int mxf_read_packet_old(AVFormatContext *s, AVPacket *pkt) | |
2362 | { | |
2363 | KLVPacket klv; | |
2364 | MXFContext *mxf = s->priv_data; | |
2365 | int ret; | |
2366 | ||
2367 | while ((ret = klv_read_packet(&klv, s->pb)) == 0) { | |
2368 | PRINT_KEY(s, "read packet", klv.key); | |
2369 | av_dlog(s, "size %"PRIu64" offset %#"PRIx64"\n", klv.length, klv.offset); | |
2370 | if (IS_KLV_KEY(klv.key, mxf_encrypted_triplet_key)) { | |
2371 | ret = mxf_decrypt_triplet(s, pkt, &klv); | |
2372 | if (ret < 0) { | |
2373 | av_log(s, AV_LOG_ERROR, "invalid encoded triplet\n"); | |
2374 | return ret; | |
2375 | } | |
2376 | return 0; | |
2377 | } | |
2378 | if (IS_KLV_KEY(klv.key, mxf_essence_element_key) || | |
2379 | IS_KLV_KEY(klv.key, mxf_avid_essence_element_key)) { | |
2380 | int index = mxf_get_stream_index(s, &klv); | |
2381 | int64_t next_ofs, next_klv; | |
2382 | AVStream *st; | |
2383 | MXFTrack *track; | |
2384 | AVCodecContext *codec; | |
2385 | ||
2386 | if (index < 0) { | |
2387 | av_log(s, AV_LOG_ERROR, | |
2388 | "error getting stream index %"PRIu32"\n", | |
2389 | AV_RB32(klv.key + 12)); | |
2390 | goto skip; | |
2391 | } | |
2392 | ||
2393 | st = s->streams[index]; | |
2394 | track = st->priv_data; | |
2395 | ||
2396 | if (s->streams[index]->discard == AVDISCARD_ALL) | |
2397 | goto skip; | |
2398 | ||
2399 | next_klv = avio_tell(s->pb) + klv.length; | |
2400 | next_ofs = mxf_set_current_edit_unit(mxf, klv.offset); | |
2401 | ||
2402 | if (next_ofs >= 0 && next_klv > next_ofs) { | |
2403 | /* if this check is hit then it's possible OPAtom was treated as OP1a | |
2404 | * truncate the packet since it's probably very large (>2 GiB is common) */ | |
2405 | avpriv_request_sample(s, | |
2406 | "OPAtom misinterpreted as OP1a?" | |
2407 | "KLV for edit unit %i extending into " | |
2408 | "next edit unit", | |
2409 | mxf->current_edit_unit); | |
2410 | klv.length = next_ofs - avio_tell(s->pb); | |
2411 | } | |
2412 | ||
2413 | /* check for 8 channels AES3 element */ | |
2414 | if (klv.key[12] == 0x06 && klv.key[13] == 0x01 && klv.key[14] == 0x10) { | |
2415 | ret = mxf_get_d10_aes3_packet(s->pb, s->streams[index], | |
2416 | pkt, klv.length); | |
2417 | if (ret < 0) { | |
2418 | av_log(s, AV_LOG_ERROR, "error reading D-10 aes3 frame\n"); | |
2419 | return ret; | |
2420 | } | |
2421 | } else { | |
2422 | ret = av_get_packet(s->pb, pkt, klv.length); | |
2423 | if (ret < 0) | |
2424 | return ret; | |
2425 | } | |
2426 | pkt->stream_index = index; | |
2427 | pkt->pos = klv.offset; | |
2428 | ||
2429 | codec = s->streams[index]->codec; | |
2430 | ||
2431 | if (codec->codec_type == AVMEDIA_TYPE_VIDEO && next_ofs >= 0) { | |
2432 | /* mxf->current_edit_unit good - see if we have an | |
2433 | * index table to derive timestamps from */ | |
2434 | MXFIndexTable *t = &mxf->index_tables[0]; | |
2435 | ||
2436 | if (mxf->nb_index_tables >= 1 && mxf->current_edit_unit < t->nb_ptses) { | |
2437 | pkt->dts = mxf->current_edit_unit + t->first_dts; | |
2438 | pkt->pts = t->ptses[mxf->current_edit_unit]; | |
2439 | } else if (track->intra_only) { | |
2440 | /* intra-only -> PTS = EditUnit. | |
2441 | * let utils.c figure out DTS since it can be < PTS if low_delay = 0 (Sony IMX30) */ | |
2442 | pkt->pts = mxf->current_edit_unit; | |
2443 | } | |
2444 | } else if (codec->codec_type == AVMEDIA_TYPE_AUDIO) { | |
2445 | ret = mxf_set_audio_pts(mxf, codec, pkt); | |
2446 | if (ret < 0) | |
2447 | return ret; | |
2448 | } | |
2449 | ||
2450 | /* seek for truncated packets */ | |
2451 | avio_seek(s->pb, next_klv, SEEK_SET); | |
2452 | ||
2453 | return 0; | |
2454 | } else | |
2455 | skip: | |
2456 | avio_skip(s->pb, klv.length); | |
2457 | } | |
2458 | return avio_feof(s->pb) ? AVERROR_EOF : ret; | |
2459 | } | |
2460 | ||
2461 | static int mxf_read_packet(AVFormatContext *s, AVPacket *pkt) | |
2462 | { | |
2463 | MXFContext *mxf = s->priv_data; | |
2464 | int ret, size; | |
2465 | int64_t ret64, pos, next_pos; | |
2466 | AVStream *st; | |
2467 | MXFIndexTable *t; | |
2468 | int edit_units; | |
2469 | ||
2470 | if (mxf->op != OPAtom) | |
2471 | return mxf_read_packet_old(s, pkt); | |
2472 | ||
2473 | /* OPAtom - clip wrapped demuxing */ | |
2474 | /* NOTE: mxf_read_header() makes sure nb_index_tables > 0 for OPAtom */ | |
2475 | st = s->streams[0]; | |
2476 | t = &mxf->index_tables[0]; | |
2477 | ||
2478 | if (mxf->current_edit_unit >= st->duration) | |
2479 | return AVERROR_EOF; | |
2480 | ||
2481 | edit_units = FFMIN(mxf->edit_units_per_packet, st->duration - mxf->current_edit_unit); | |
2482 | ||
2483 | if ((ret = mxf_edit_unit_absolute_offset(mxf, t, mxf->current_edit_unit, NULL, &pos, 1)) < 0) | |
2484 | return ret; | |
2485 | ||
2486 | /* compute size by finding the next edit unit or the end of the essence container | |
2487 | * not pretty, but it works */ | |
2488 | if ((ret = mxf_edit_unit_absolute_offset(mxf, t, mxf->current_edit_unit + edit_units, NULL, &next_pos, 0)) < 0 && | |
2489 | (next_pos = mxf_essence_container_end(mxf, t->body_sid)) <= 0) { | |
2490 | av_log(s, AV_LOG_ERROR, "unable to compute the size of the last packet\n"); | |
2491 | return AVERROR_INVALIDDATA; | |
2492 | } | |
2493 | ||
2494 | if ((size = next_pos - pos) <= 0) { | |
2495 | av_log(s, AV_LOG_ERROR, "bad size: %i\n", size); | |
2496 | return AVERROR_INVALIDDATA; | |
2497 | } | |
2498 | ||
2499 | if ((ret64 = avio_seek(s->pb, pos, SEEK_SET)) < 0) | |
2500 | return ret64; | |
2501 | ||
2502 | if ((size = av_get_packet(s->pb, pkt, size)) < 0) | |
2503 | return size; | |
2504 | ||
2505 | pkt->stream_index = 0; | |
2506 | ||
2507 | if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && t->ptses && | |
2508 | mxf->current_edit_unit >= 0 && mxf->current_edit_unit < t->nb_ptses) { | |
2509 | pkt->dts = mxf->current_edit_unit + t->first_dts; | |
2510 | pkt->pts = t->ptses[mxf->current_edit_unit]; | |
2511 | } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) { | |
2512 | int ret = mxf_set_audio_pts(mxf, st->codec, pkt); | |
2513 | if (ret < 0) | |
2514 | return ret; | |
2515 | } | |
2516 | ||
2517 | mxf->current_edit_unit += edit_units; | |
2518 | ||
2519 | return 0; | |
2520 | } | |
2521 | ||
2522 | static int mxf_read_close(AVFormatContext *s) | |
2523 | { | |
2524 | MXFContext *mxf = s->priv_data; | |
2525 | MXFIndexTableSegment *seg; | |
2526 | int i; | |
2527 | ||
2528 | av_freep(&mxf->packages_refs); | |
2529 | ||
2530 | for (i = 0; i < s->nb_streams; i++) | |
2531 | s->streams[i]->priv_data = NULL; | |
2532 | ||
2533 | for (i = 0; i < mxf->metadata_sets_count; i++) { | |
2534 | switch (mxf->metadata_sets[i]->type) { | |
2535 | case Descriptor: | |
2536 | av_freep(&((MXFDescriptor *)mxf->metadata_sets[i])->extradata); | |
2537 | break; | |
2538 | case MultipleDescriptor: | |
2539 | av_freep(&((MXFDescriptor *)mxf->metadata_sets[i])->sub_descriptors_refs); | |
2540 | break; | |
2541 | case Sequence: | |
2542 | av_freep(&((MXFSequence *)mxf->metadata_sets[i])->structural_components_refs); | |
2543 | break; | |
2544 | case SourcePackage: | |
2545 | case MaterialPackage: | |
2546 | av_freep(&((MXFPackage *)mxf->metadata_sets[i])->tracks_refs); | |
2547 | break; | |
2548 | case IndexTableSegment: | |
2549 | seg = (MXFIndexTableSegment *)mxf->metadata_sets[i]; | |
2550 | av_freep(&seg->temporal_offset_entries); | |
2551 | av_freep(&seg->flag_entries); | |
2552 | av_freep(&seg->stream_offset_entries); | |
2553 | break; | |
2554 | default: | |
2555 | break; | |
2556 | } | |
2557 | av_freep(&mxf->metadata_sets[i]); | |
2558 | } | |
2559 | av_freep(&mxf->partitions); | |
2560 | av_freep(&mxf->metadata_sets); | |
2561 | av_freep(&mxf->aesc); | |
2562 | av_freep(&mxf->local_tags); | |
2563 | ||
2564 | if (mxf->index_tables) { | |
2565 | for (i = 0; i < mxf->nb_index_tables; i++) { | |
2566 | av_freep(&mxf->index_tables[i].segments); | |
2567 | av_freep(&mxf->index_tables[i].ptses); | |
2568 | av_freep(&mxf->index_tables[i].fake_index); | |
2569 | } | |
2570 | } | |
2571 | av_freep(&mxf->index_tables); | |
2572 | ||
2573 | return 0; | |
2574 | } | |
2575 | ||
2576 | static int mxf_probe(AVProbeData *p) { | |
2577 | const uint8_t *bufp = p->buf; | |
2578 | const uint8_t *end = p->buf + p->buf_size; | |
2579 | ||
2580 | if (p->buf_size < sizeof(mxf_header_partition_pack_key)) | |
2581 | return 0; | |
2582 | ||
2583 | /* Must skip Run-In Sequence and search for MXF header partition pack key SMPTE 377M 5.5 */ | |
2584 | end -= sizeof(mxf_header_partition_pack_key); | |
2585 | ||
2586 | for (; bufp < end;) { | |
2587 | if (!((bufp[13] - 1) & 0xF2)){ | |
2588 | if (AV_RN32(bufp ) == AV_RN32(mxf_header_partition_pack_key ) && | |
2589 | AV_RN32(bufp+ 4) == AV_RN32(mxf_header_partition_pack_key+ 4) && | |
2590 | AV_RN32(bufp+ 8) == AV_RN32(mxf_header_partition_pack_key+ 8) && | |
2591 | AV_RN16(bufp+12) == AV_RN16(mxf_header_partition_pack_key+12)) | |
2592 | return AVPROBE_SCORE_MAX; | |
2593 | bufp ++; | |
2594 | } else | |
2595 | bufp += 10; | |
2596 | } | |
2597 | ||
2598 | return 0; | |
2599 | } | |
2600 | ||
2601 | /* rudimentary byte seek */ | |
2602 | /* XXX: use MXF Index */ | |
2603 | static int mxf_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags) | |
2604 | { | |
2605 | AVStream *st = s->streams[stream_index]; | |
2606 | int64_t seconds; | |
2607 | MXFContext* mxf = s->priv_data; | |
2608 | int64_t seekpos; | |
2609 | int i, ret; | |
2610 | MXFIndexTable *t; | |
2611 | MXFTrack *source_track = st->priv_data; | |
2612 | ||
2613 | /* if audio then truncate sample_time to EditRate */ | |
2614 | if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) | |
2615 | sample_time = av_rescale_q(sample_time, st->time_base, | |
2616 | av_inv_q(source_track->edit_rate)); | |
2617 | ||
2618 | if (mxf->nb_index_tables <= 0) { | |
2619 | if (!s->bit_rate) | |
2620 | return AVERROR_INVALIDDATA; | |
2621 | if (sample_time < 0) | |
2622 | sample_time = 0; | |
2623 | seconds = av_rescale(sample_time, st->time_base.num, st->time_base.den); | |
2624 | ||
2625 | seekpos = avio_seek(s->pb, (s->bit_rate * seconds) >> 3, SEEK_SET); | |
2626 | if (seekpos < 0) | |
2627 | return seekpos; | |
2628 | ||
2629 | ff_update_cur_dts(s, st, sample_time); | |
2630 | mxf->current_edit_unit = sample_time; | |
2631 | } else { | |
2632 | t = &mxf->index_tables[0]; | |
2633 | ||
2634 | /* clamp above zero, else ff_index_search_timestamp() returns negative | |
2635 | * this also means we allow seeking before the start */ | |
2636 | sample_time = FFMAX(sample_time, 0); | |
2637 | ||
2638 | if (t->fake_index) { | |
2639 | /* behave as if we have a proper index */ | |
2640 | if ((sample_time = ff_index_search_timestamp(t->fake_index, t->nb_ptses, sample_time, flags)) < 0) | |
2641 | return sample_time; | |
2642 | } else { | |
2643 | /* no IndexEntryArray (one or more CBR segments) | |
2644 | * make sure we don't seek past the end */ | |
2645 | sample_time = FFMIN(sample_time, source_track->original_duration - 1); | |
2646 | } | |
2647 | ||
2648 | if ((ret = mxf_edit_unit_absolute_offset(mxf, t, sample_time, &sample_time, &seekpos, 1)) < 0) | |
2649 | return ret; | |
2650 | ||
2651 | ff_update_cur_dts(s, st, sample_time); | |
2652 | mxf->current_edit_unit = sample_time; | |
2653 | avio_seek(s->pb, seekpos, SEEK_SET); | |
2654 | } | |
2655 | ||
2656 | // Update all tracks sample count | |
2657 | for (i = 0; i < s->nb_streams; i++) { | |
2658 | AVStream *cur_st = s->streams[i]; | |
2659 | MXFTrack *cur_track = cur_st->priv_data; | |
2660 | uint64_t current_sample_count = 0; | |
2661 | if (cur_st->codec->codec_type == AVMEDIA_TYPE_AUDIO) { | |
2662 | ret = mxf_compute_sample_count(mxf, i, ¤t_sample_count); | |
2663 | if (ret < 0) | |
2664 | return ret; | |
2665 | ||
2666 | cur_track->sample_count = current_sample_count; | |
2667 | } | |
2668 | } | |
2669 | return 0; | |
2670 | } | |
2671 | ||
2672 | AVInputFormat ff_mxf_demuxer = { | |
2673 | .name = "mxf", | |
2674 | .long_name = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format)"), | |
2675 | .priv_data_size = sizeof(MXFContext), | |
2676 | .read_probe = mxf_probe, | |
2677 | .read_header = mxf_read_header, | |
2678 | .read_packet = mxf_read_packet, | |
2679 | .read_close = mxf_read_close, | |
2680 | .read_seek = mxf_read_seek, | |
2681 | }; |