mxf: Set audio packets pts
[libav.git] / libavformat / mxfdec.c
CommitLineData
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1/*
2 * MXF demuxer.
406792e7 3 * Copyright (c) 2006 SmartJog S.A., Baptiste Coudurier <baptiste dot coudurier at smartjog dot com>
d09ea6ba 4 *
2912e87a 5 * This file is part of Libav.
d09ea6ba 6 *
2912e87a 7 * Libav is free software; you can redistribute it and/or
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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 *
2912e87a 12 * Libav is distributed in the hope that it will be useful,
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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
2912e87a 18 * License along with Libav; if not, write to the Free Software
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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
8f8bc923
DB
46#include <stdint.h>
47
d09ea6ba 48#include "libavutil/aes.h"
0ebcdf5c 49#include "libavutil/mathematics.h"
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50#include "libavcodec/bytestream.h"
51#include "avformat.h"
a2faa951 52#include "internal.h"
c69968b4 53#include "mxf.h"
d09ea6ba 54
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55typedef enum {
56 Header,
57 BodyPartition,
58 Footer
59} MXFPartitionType;
60
61typedef enum {
240ddbce 62 OP1a = 1,
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TH
63 OP1b,
64 OP1c,
65 OP2a,
66 OP2b,
67 OP2c,
68 OP3a,
69 OP3b,
70 OP3c,
71 OPAtom,
21cc4b33 72 OPSonyOpt, /* FATE sample, violates the spec in places */
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TH
73} MXFOP;
74
75typedef struct {
76 int closed;
77 int complete;
78 MXFPartitionType type;
79 uint64_t previous_partition;
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80 int index_sid;
81 int body_sid;
be78e3f6 82 int64_t this_partition;
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TH
83 int64_t essence_offset; ///< absolute offset of essence
84 int64_t essence_length;
85 int32_t kag_size;
86 int64_t header_byte_count;
87 int64_t index_byte_count;
88 int pack_length;
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89} MXFPartition;
90
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91typedef struct {
92 UID uid;
93 enum MXFMetadataSetType type;
94 UID source_container_ul;
95} MXFCryptoContext;
96
97typedef struct {
98 UID uid;
99 enum MXFMetadataSetType type;
100 UID source_package_uid;
101 UID data_definition_ul;
102 int64_t duration;
103 int64_t start_position;
104 int source_track_id;
105} MXFStructuralComponent;
106
107typedef struct {
108 UID uid;
109 enum MXFMetadataSetType type;
110 UID data_definition_ul;
111 UID *structural_components_refs;
112 int structural_components_count;
113 int64_t duration;
114} MXFSequence;
115
116typedef struct {
117 UID uid;
118 enum MXFMetadataSetType type;
119 MXFSequence *sequence; /* mandatory, and only one */
120 UID sequence_ref;
121 int track_id;
122 uint8_t track_number[4];
123 AVRational edit_rate;
5ed032fb 124 int intra_only;
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125 uint64_t sample_count;
126 int64_t original_duration; /* st->duration in SampleRate/EditRate units */
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127} MXFTrack;
128
129typedef struct {
130 UID uid;
131 enum MXFMetadataSetType type;
132 UID essence_container_ul;
133 UID essence_codec_ul;
134 AVRational sample_rate;
135 AVRational aspect_ratio;
136 int width;
634d6705
JA
137 int height; /* Field height, not frame height */
138 int frame_layout; /* See MXFFrameLayout enum */
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MB
139#define MXF_TFF 1
140#define MXF_BFF 2
141 int field_dominance;
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142 int channels;
143 int bits_per_sample;
fda891e1
PN
144 unsigned int component_depth;
145 unsigned int horiz_subsampling;
146 unsigned int vert_subsampling;
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147 UID *sub_descriptors_refs;
148 int sub_descriptors_count;
149 int linked_track_id;
150 uint8_t *extradata;
151 int extradata_size;
716d413c 152 enum AVPixelFormat pix_fmt;
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153} MXFDescriptor;
154
155typedef struct {
156 UID uid;
157 enum MXFMetadataSetType type;
682b6db7
JG
158 int edit_unit_byte_count;
159 int index_sid;
160 int body_sid;
682b6db7
JG
161 AVRational index_edit_rate;
162 uint64_t index_start_position;
163 uint64_t index_duration;
21cc4b33 164 int8_t *temporal_offset_entries;
682b6db7
JG
165 int *flag_entries;
166 uint64_t *stream_offset_entries;
682b6db7 167 int nb_index_entries;
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168} MXFIndexTableSegment;
169
170typedef struct {
171 UID uid;
172 enum MXFMetadataSetType type;
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173 UID package_uid;
174 UID *tracks_refs;
175 int tracks_count;
176 MXFDescriptor *descriptor; /* only one */
177 UID descriptor_ref;
178} MXFPackage;
179
180typedef struct {
181 UID uid;
182 enum MXFMetadataSetType type;
183} MXFMetadataSet;
184
f028d4d1
JG
185/* decoded index table */
186typedef struct {
187 int index_sid;
188 int body_sid;
189 int nb_ptses; /* number of PTSes or total duration of index */
190 int64_t first_dts; /* DTS = EditUnit + first_dts */
191 int64_t *ptses; /* maps EditUnit -> PTS */
192 int nb_segments;
193 MXFIndexTableSegment **segments; /* sorted by IndexStartPosition */
194 AVIndexEntry *fake_index; /* used for calling ff_index_search_timestamp() */
195} MXFIndexTable;
196
d09ea6ba 197typedef struct {
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TH
198 MXFPartition *partitions;
199 unsigned partitions_count;
200 MXFOP op;
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201 UID *packages_refs;
202 int packages_count;
203 MXFMetadataSet **metadata_sets;
204 int metadata_sets_count;
205 AVFormatContext *fc;
206 struct AVAES *aesc;
207 uint8_t *local_tags;
208 int local_tags_count;
83ab10f6 209 uint64_t footer_partition;
682b6db7
JG
210 KLVPacket current_klv_data;
211 int current_klv_index;
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TH
212 int run_in;
213 MXFPartition *current_partition;
214 int parsing_backward;
215 int64_t last_forward_tell;
c77a5460 216 int last_forward_partition;
f028d4d1
JG
217 int current_edit_unit;
218 int nb_index_tables;
219 MXFIndexTable *index_tables;
c65642d3 220 int edit_units_per_packet; ///< how many edit units to read at a time (PCM, OPAtom)
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221} MXFContext;
222
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223enum MXFWrappingScheme {
224 Frame,
225 Clip,
226};
227
21cc4b33
TH
228/* NOTE: klv_offset is not set (-1) for local keys */
229typedef int MXFMetadataReadFunc(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset);
39bb30f6 230
d09ea6ba 231typedef struct {
d09ea6ba 232 const UID key;
39bb30f6 233 MXFMetadataReadFunc *read;
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234 int ctx_size;
235 enum MXFMetadataSetType type;
236} MXFMetadataReadTableEntry;
237
238/* partial keys to match */
239static const uint8_t mxf_header_partition_pack_key[] = { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02 };
240static const uint8_t mxf_essence_element_key[] = { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01 };
1f5f8b26 241static const uint8_t mxf_avid_essence_element_key[] = { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0e,0x04,0x03,0x01 };
edb50856 242static const uint8_t mxf_system_item_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x03,0x01,0x04 };
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243static const uint8_t mxf_klv_key[] = { 0x06,0x0e,0x2b,0x34 };
244/* complete keys to match */
245static const uint8_t mxf_crypto_source_container_ul[] = { 0x06,0x0e,0x2b,0x34,0x01,0x01,0x01,0x09,0x06,0x01,0x01,0x02,0x02,0x00,0x00,0x00 };
246static const uint8_t mxf_encrypted_triplet_key[] = { 0x06,0x0e,0x2b,0x34,0x02,0x04,0x01,0x07,0x0d,0x01,0x03,0x01,0x02,0x7e,0x01,0x00 };
247static const uint8_t mxf_encrypted_essence_container[] = { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x0d,0x01,0x03,0x01,0x02,0x0b,0x01,0x00 };
248static const uint8_t mxf_sony_mpeg4_extradata[] = { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0e,0x06,0x06,0x02,0x02,0x01,0x00,0x00 };
249
250#define IS_KLV_KEY(x, y) (!memcmp(x, y, sizeof(y)))
251
ae628ec1 252static int64_t klv_decode_ber_length(AVIOContext *pb)
d09ea6ba 253{
b7effd4e 254 uint64_t size = avio_r8(pb);
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255 if (size & 0x80) { /* long form */
256 int bytes_num = size & 0x7f;
257 /* SMPTE 379M 5.3.4 guarantee that bytes_num must not exceed 8 bytes */
258 if (bytes_num > 8)
bcd5d979 259 return AVERROR_INVALIDDATA;
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260 size = 0;
261 while (bytes_num--)
b7effd4e 262 size = size << 8 | avio_r8(pb);
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263 }
264 return size;
265}
266
ae628ec1 267static int mxf_read_sync(AVIOContext *pb, const uint8_t *key, unsigned size)
d09ea6ba
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268{
269 int i, b;
66e5b1df 270 for (i = 0; i < size && !pb->eof_reached; i++) {
b7effd4e 271 b = avio_r8(pb);
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272 if (b == key[0])
273 i = 0;
274 else if (b != key[i])
275 i = -1;
276 }
277 return i == size;
278}
279
ae628ec1 280static int klv_read_packet(KLVPacket *klv, AVIOContext *pb)
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281{
282 if (!mxf_read_sync(pb, mxf_klv_key, 4))
bcd5d979 283 return AVERROR_INVALIDDATA;
a2704c97 284 klv->offset = avio_tell(pb) - 4;
d09ea6ba 285 memcpy(klv->key, mxf_klv_key, 4);
b7effd4e 286 avio_read(pb, klv->key + 4, 12);
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287 klv->length = klv_decode_ber_length(pb);
288 return klv->length == -1 ? -1 : 0;
289}
290
291static int mxf_get_stream_index(AVFormatContext *s, KLVPacket *klv)
292{
293 int i;
294
295 for (i = 0; i < s->nb_streams; i++) {
296 MXFTrack *track = s->streams[i]->priv_data;
297 /* SMPTE 379M 7.3 */
298 if (!memcmp(klv->key + sizeof(mxf_essence_element_key), track->track_number, sizeof(track->track_number)))
299 return i;
300 }
301 /* return 0 if only one stream, for OP Atom files with 0 as track number */
302 return s->nb_streams == 1 ? 0 : -1;
303}
304
305/* XXX: use AVBitStreamFilter */
ae628ec1 306static int mxf_get_d10_aes3_packet(AVIOContext *pb, AVStream *st, AVPacket *pkt, int64_t length)
d09ea6ba 307{
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BC
308 const uint8_t *buf_ptr, *end_ptr;
309 uint8_t *data_ptr;
310 int i;
311
312 if (length > 61444) /* worst case PAL 1920 samples 8 channels */
bcd5d979 313 return AVERROR_INVALIDDATA;
0c46e958
AC
314 length = av_get_packet(pb, pkt, length);
315 if (length < 0)
316 return length;
d09ea6ba 317 data_ptr = pkt->data;
c7a38887
RD
318 end_ptr = pkt->data + length;
319 buf_ptr = pkt->data + 4; /* skip SMPTE 331M header */
aa0cb16c 320 for (; end_ptr - buf_ptr >= st->codec->channels * 4; ) {
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BC
321 for (i = 0; i < st->codec->channels; i++) {
322 uint32_t sample = bytestream_get_le32(&buf_ptr);
dd1c8f3e 323 if (st->codec->bits_per_coded_sample == 24)
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324 bytestream_put_le24(&data_ptr, (sample >> 4) & 0xffffff);
325 else
326 bytestream_put_le16(&data_ptr, (sample >> 12) & 0xffff);
327 }
328 buf_ptr += 32 - st->codec->channels*4; // always 8 channels stored SMPTE 331M
329 }
0c46e958 330 av_shrink_packet(pkt, data_ptr - pkt->data);
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BC
331 return 0;
332}
333
334static int mxf_decrypt_triplet(AVFormatContext *s, AVPacket *pkt, KLVPacket *klv)
335{
336 static const uint8_t checkv[16] = {0x43, 0x48, 0x55, 0x4b, 0x43, 0x48, 0x55, 0x4b, 0x43, 0x48, 0x55, 0x4b, 0x43, 0x48, 0x55, 0x4b};
337 MXFContext *mxf = s->priv_data;
ae628ec1 338 AVIOContext *pb = s->pb;
a2704c97 339 int64_t end = avio_tell(pb) + klv->length;
735e601b 340 int64_t size;
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BC
341 uint64_t orig_size;
342 uint64_t plaintext_size;
343 uint8_t ivec[16];
344 uint8_t tmpbuf[16];
345 int index;
346
347 if (!mxf->aesc && s->key && s->keylen == 16) {
e002e329 348 mxf->aesc = av_aes_alloc();
d09ea6ba 349 if (!mxf->aesc)
bcd5d979 350 return AVERROR(ENOMEM);
d09ea6ba
BC
351 av_aes_init(mxf->aesc, s->key, 128, 1);
352 }
353 // crypto context
45a8a02a 354 avio_skip(pb, klv_decode_ber_length(pb));
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BC
355 // plaintext offset
356 klv_decode_ber_length(pb);
b7effd4e 357 plaintext_size = avio_rb64(pb);
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BC
358 // source klv key
359 klv_decode_ber_length(pb);
b7effd4e 360 avio_read(pb, klv->key, 16);
d09ea6ba 361 if (!IS_KLV_KEY(klv, mxf_essence_element_key))
bcd5d979 362 return AVERROR_INVALIDDATA;
d09ea6ba
BC
363 index = mxf_get_stream_index(s, klv);
364 if (index < 0)
bcd5d979 365 return AVERROR_INVALIDDATA;
d09ea6ba
BC
366 // source size
367 klv_decode_ber_length(pb);
b7effd4e 368 orig_size = avio_rb64(pb);
d09ea6ba 369 if (orig_size < plaintext_size)
bcd5d979 370 return AVERROR_INVALIDDATA;
d09ea6ba
BC
371 // enc. code
372 size = klv_decode_ber_length(pb);
373 if (size < 32 || size - 32 < orig_size)
bcd5d979 374 return AVERROR_INVALIDDATA;
b7effd4e
AK
375 avio_read(pb, ivec, 16);
376 avio_read(pb, tmpbuf, 16);
d09ea6ba
BC
377 if (mxf->aesc)
378 av_aes_crypt(mxf->aesc, tmpbuf, tmpbuf, 1, ivec, 1);
379 if (memcmp(tmpbuf, checkv, 16))
380 av_log(s, AV_LOG_ERROR, "probably incorrect decryption key\n");
381 size -= 32;
0c46e958
AC
382 size = av_get_packet(pb, pkt, size);
383 if (size < 0)
384 return size;
385 else if (size < plaintext_size)
386 return AVERROR_INVALIDDATA;
d09ea6ba
BC
387 size -= plaintext_size;
388 if (mxf->aesc)
389 av_aes_crypt(mxf->aesc, &pkt->data[plaintext_size],
390 &pkt->data[plaintext_size], size >> 4, ivec, 1);
0c46e958 391 av_shrink_packet(pkt, orig_size);
d09ea6ba 392 pkt->stream_index = index;
45a8a02a 393 avio_skip(pb, end - avio_tell(pb));
d09ea6ba
BC
394 return 0;
395}
396
21cc4b33 397static int mxf_read_primer_pack(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
d09ea6ba 398{
39bb30f6 399 MXFContext *mxf = arg;
b7effd4e
AK
400 int item_num = avio_rb32(pb);
401 int item_len = avio_rb32(pb);
d09ea6ba
BC
402
403 if (item_len != 18) {
1ecdf891 404 avpriv_request_sample(pb, "Primer pack item length %d", item_len);
bcd5d979 405 return AVERROR_PATCHWELCOME;
d09ea6ba
BC
406 }
407 if (item_num > UINT_MAX / item_len)
bcd5d979 408 return AVERROR_INVALIDDATA;
d09ea6ba
BC
409 mxf->local_tags_count = item_num;
410 mxf->local_tags = av_malloc(item_num*item_len);
411 if (!mxf->local_tags)
bcd5d979 412 return AVERROR(ENOMEM);
b7effd4e 413 avio_read(pb, mxf->local_tags, item_num*item_len);
d09ea6ba
BC
414 return 0;
415}
416
21cc4b33 417static int mxf_read_partition_pack(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
d32b3f40
TH
418{
419 MXFContext *mxf = arg;
f369b935 420 MXFPartition *partition;
d32b3f40 421 UID op;
83ab10f6 422 uint64_t footer_partition;
240ddbce 423 uint32_t nb_essence_containers;
f369b935 424 int err;
d32b3f40 425
f369b935
AK
426 if ((err = av_reallocp_array(&mxf->partitions, mxf->partitions_count + 1,
427 sizeof(*mxf->partitions))) < 0) {
428 mxf->partitions_count = 0;
429 return err;
430 }
d32b3f40 431
c77a5460
TH
432 if (mxf->parsing_backward) {
433 /* insert the new partition pack in the middle
434 * this makes the entries in mxf->partitions sorted by offset */
435 memmove(&mxf->partitions[mxf->last_forward_partition+1],
436 &mxf->partitions[mxf->last_forward_partition],
437 (mxf->partitions_count - mxf->last_forward_partition)*sizeof(*mxf->partitions));
438 partition = mxf->current_partition = &mxf->partitions[mxf->last_forward_partition];
439 } else {
440 mxf->last_forward_partition++;
441 partition = mxf->current_partition = &mxf->partitions[mxf->partitions_count];
442 }
443
444 memset(partition, 0, sizeof(*partition));
445 mxf->partitions_count++;
21cc4b33 446 partition->pack_length = avio_tell(pb) - klv_offset + size;
d32b3f40
TH
447
448 switch(uid[13]) {
449 case 2:
450 partition->type = Header;
451 break;
452 case 3:
453 partition->type = BodyPartition;
454 break;
455 case 4:
456 partition->type = Footer;
457 break;
458 default:
459 av_log(mxf->fc, AV_LOG_ERROR, "unknown partition type %i\n", uid[13]);
460 return AVERROR_INVALIDDATA;
461 }
462
463 /* consider both footers to be closed (there is only Footer and CompleteFooter) */
464 partition->closed = partition->type == Footer || !(uid[14] & 1);
465 partition->complete = uid[14] > 2;
21cc4b33
TH
466 avio_skip(pb, 4);
467 partition->kag_size = avio_rb32(pb);
be78e3f6 468 partition->this_partition = avio_rb64(pb);
d32b3f40 469 partition->previous_partition = avio_rb64(pb);
83ab10f6 470 footer_partition = avio_rb64(pb);
21cc4b33
TH
471 partition->header_byte_count = avio_rb64(pb);
472 partition->index_byte_count = avio_rb64(pb);
d32b3f40
TH
473 partition->index_sid = avio_rb32(pb);
474 avio_skip(pb, 8);
475 partition->body_sid = avio_rb32(pb);
476 avio_read(pb, op, sizeof(UID));
240ddbce 477 nb_essence_containers = avio_rb32(pb);
d32b3f40 478
83ab10f6
TH
479 /* some files don'thave FooterPartition set in every partition */
480 if (footer_partition) {
481 if (mxf->footer_partition && mxf->footer_partition != footer_partition) {
4fbd3e89
JF
482 av_log(mxf->fc, AV_LOG_ERROR,
483 "inconsistent FooterPartition value: %"PRIu64" != %"PRIu64"\n",
83ab10f6
TH
484 mxf->footer_partition, footer_partition);
485 } else {
486 mxf->footer_partition = footer_partition;
487 }
488 }
489
4fbd3e89
JF
490 av_dlog(mxf->fc,
491 "PartitionPack: ThisPartition = 0x%"PRIX64
492 ", PreviousPartition = 0x%"PRIX64", "
493 "FooterPartition = 0x%"PRIX64", IndexSID = %i, BodySID = %i\n",
be78e3f6 494 partition->this_partition,
83ab10f6 495 partition->previous_partition, footer_partition,
d32b3f40
TH
496 partition->index_sid, partition->body_sid);
497
df2a8508
TH
498 /* sanity check PreviousPartition if set */
499 if (partition->previous_partition &&
500 mxf->run_in + partition->previous_partition >= klv_offset) {
501 av_log(mxf->fc, AV_LOG_ERROR,
502 "PreviousPartition points to this partition or forward\n");
503 return AVERROR_INVALIDDATA;
504 }
505
d32b3f40
TH
506 if (op[12] == 1 && op[13] == 1) mxf->op = OP1a;
507 else if (op[12] == 1 && op[13] == 2) mxf->op = OP1b;
508 else if (op[12] == 1 && op[13] == 3) mxf->op = OP1c;
509 else if (op[12] == 2 && op[13] == 1) mxf->op = OP2a;
510 else if (op[12] == 2 && op[13] == 2) mxf->op = OP2b;
511 else if (op[12] == 2 && op[13] == 3) mxf->op = OP2c;
512 else if (op[12] == 3 && op[13] == 1) mxf->op = OP3a;
513 else if (op[12] == 3 && op[13] == 2) mxf->op = OP3b;
514 else if (op[12] == 3 && op[13] == 3) mxf->op = OP3c;
21cc4b33 515 else if (op[12] == 64&& op[13] == 1) mxf->op = OPSonyOpt;
240ddbce
TH
516 else if (op[12] == 0x10) {
517 /* SMPTE 390m: "There shall be exactly one essence container"
fb8fa3c6
TH
518 * The following block deals with files that violate this, namely:
519 * 2011_DCPTEST_24FPS.V.mxf - two ECs, OP1a
520 * abcdefghiv016f56415e.mxf - zero ECs, OPAtom, output by Avid AirSpeed */
240ddbce 521 if (nb_essence_containers != 1) {
fb8fa3c6
TH
522 MXFOP op = nb_essence_containers ? OP1a : OPAtom;
523
240ddbce
TH
524 /* only nag once */
525 if (!mxf->op)
526 av_log(mxf->fc, AV_LOG_WARNING,
fb8fa3c6
TH
527 "\"OPAtom\" with %u ECs - assuming %s\n",
528 nb_essence_containers,
529 op == OP1a ? "OP1a" : "OPAtom");
240ddbce 530
fb8fa3c6 531 mxf->op = op;
240ddbce
TH
532 } else
533 mxf->op = OPAtom;
534 } else {
21cc4b33
TH
535 av_log(mxf->fc, AV_LOG_ERROR, "unknown operational pattern: %02xh %02xh - guessing OP1a\n", op[12], op[13]);
536 mxf->op = OP1a;
537 }
538
539 if (partition->kag_size <= 0 || partition->kag_size > (1 << 20)) {
540 av_log(mxf->fc, AV_LOG_WARNING, "invalid KAGSize %i - guessing ", partition->kag_size);
541
542 if (mxf->op == OPSonyOpt)
543 partition->kag_size = 512;
544 else
545 partition->kag_size = 1;
546
547 av_log(mxf->fc, AV_LOG_WARNING, "%i\n", partition->kag_size);
548 }
d32b3f40
TH
549
550 return 0;
551}
552
d09ea6ba
BC
553static int mxf_add_metadata_set(MXFContext *mxf, void *metadata_set)
554{
f369b935
AK
555 int err;
556
f369b935
AK
557 if ((err = av_reallocp_array(&mxf->metadata_sets, mxf->metadata_sets_count + 1,
558 sizeof(*mxf->metadata_sets))) < 0) {
559 mxf->metadata_sets_count = 0;
560 return err;
561 }
d09ea6ba
BC
562 mxf->metadata_sets[mxf->metadata_sets_count] = metadata_set;
563 mxf->metadata_sets_count++;
564 return 0;
565}
566
21cc4b33 567static int mxf_read_cryptographic_context(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
d09ea6ba 568{
39bb30f6 569 MXFCryptoContext *cryptocontext = arg;
d09ea6ba 570 if (size != 16)
bcd5d979 571 return AVERROR_INVALIDDATA;
d09ea6ba 572 if (IS_KLV_KEY(uid, mxf_crypto_source_container_ul))
b7effd4e 573 avio_read(pb, cryptocontext->source_container_ul, 16);
d09ea6ba
BC
574 return 0;
575}
576
21cc4b33 577static int mxf_read_content_storage(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
d09ea6ba 578{
39bb30f6 579 MXFContext *mxf = arg;
d09ea6ba
BC
580 switch (tag) {
581 case 0x1901:
b7effd4e 582 mxf->packages_count = avio_rb32(pb);
d09ea6ba 583 if (mxf->packages_count >= UINT_MAX / sizeof(UID))
bcd5d979 584 return AVERROR_INVALIDDATA;
d09ea6ba
BC
585 mxf->packages_refs = av_malloc(mxf->packages_count * sizeof(UID));
586 if (!mxf->packages_refs)
bcd5d979 587 return AVERROR(ENOMEM);
45a8a02a 588 avio_skip(pb, 4); /* useless size of objects, always 16 according to specs */
b7effd4e 589 avio_read(pb, (uint8_t *)mxf->packages_refs, mxf->packages_count * sizeof(UID));
d09ea6ba
BC
590 break;
591 }
592 return 0;
593}
594
21cc4b33 595static int mxf_read_source_clip(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
d09ea6ba 596{
39bb30f6 597 MXFStructuralComponent *source_clip = arg;
d09ea6ba
BC
598 switch(tag) {
599 case 0x0202:
b7effd4e 600 source_clip->duration = avio_rb64(pb);
d09ea6ba
BC
601 break;
602 case 0x1201:
b7effd4e 603 source_clip->start_position = avio_rb64(pb);
d09ea6ba
BC
604 break;
605 case 0x1101:
606 /* UMID, only get last 16 bytes */
45a8a02a 607 avio_skip(pb, 16);
b7effd4e 608 avio_read(pb, source_clip->source_package_uid, 16);
d09ea6ba
BC
609 break;
610 case 0x1102:
b7effd4e 611 source_clip->source_track_id = avio_rb32(pb);
d09ea6ba
BC
612 break;
613 }
614 return 0;
615}
616
21cc4b33 617static int mxf_read_material_package(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
d09ea6ba 618{
39bb30f6 619 MXFPackage *package = arg;
d09ea6ba
BC
620 switch(tag) {
621 case 0x4403:
b7effd4e 622 package->tracks_count = avio_rb32(pb);
d09ea6ba 623 if (package->tracks_count >= UINT_MAX / sizeof(UID))
bcd5d979 624 return AVERROR_INVALIDDATA;
d09ea6ba
BC
625 package->tracks_refs = av_malloc(package->tracks_count * sizeof(UID));
626 if (!package->tracks_refs)
bcd5d979 627 return AVERROR(ENOMEM);
45a8a02a 628 avio_skip(pb, 4); /* useless size of objects, always 16 according to specs */
b7effd4e 629 avio_read(pb, (uint8_t *)package->tracks_refs, package->tracks_count * sizeof(UID));
d09ea6ba
BC
630 break;
631 }
632 return 0;
633}
634
21cc4b33 635static int mxf_read_track(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
d09ea6ba 636{
39bb30f6 637 MXFTrack *track = arg;
d09ea6ba
BC
638 switch(tag) {
639 case 0x4801:
b7effd4e 640 track->track_id = avio_rb32(pb);
d09ea6ba
BC
641 break;
642 case 0x4804:
b7effd4e 643 avio_read(pb, track->track_number, 4);
d09ea6ba
BC
644 break;
645 case 0x4B01:
b7effd4e 646 track->edit_rate.num = avio_rb32(pb);
5255ca24 647 track->edit_rate.den = avio_rb32(pb);
d09ea6ba
BC
648 break;
649 case 0x4803:
b7effd4e 650 avio_read(pb, track->sequence_ref, 16);
d09ea6ba
BC
651 break;
652 }
653 return 0;
654}
655
21cc4b33 656static int mxf_read_sequence(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
d09ea6ba 657{
39bb30f6 658 MXFSequence *sequence = arg;
d09ea6ba
BC
659 switch(tag) {
660 case 0x0202:
b7effd4e 661 sequence->duration = avio_rb64(pb);
d09ea6ba
BC
662 break;
663 case 0x0201:
b7effd4e 664 avio_read(pb, sequence->data_definition_ul, 16);
d09ea6ba
BC
665 break;
666 case 0x1001:
b7effd4e 667 sequence->structural_components_count = avio_rb32(pb);
d09ea6ba 668 if (sequence->structural_components_count >= UINT_MAX / sizeof(UID))
bcd5d979 669 return AVERROR_INVALIDDATA;
d09ea6ba
BC
670 sequence->structural_components_refs = av_malloc(sequence->structural_components_count * sizeof(UID));
671 if (!sequence->structural_components_refs)
bcd5d979 672 return AVERROR(ENOMEM);
45a8a02a 673 avio_skip(pb, 4); /* useless size of objects, always 16 according to specs */
b7effd4e 674 avio_read(pb, (uint8_t *)sequence->structural_components_refs, sequence->structural_components_count * sizeof(UID));
d09ea6ba
BC
675 break;
676 }
677 return 0;
678}
679
21cc4b33 680static int mxf_read_source_package(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
d09ea6ba 681{
39bb30f6 682 MXFPackage *package = arg;
d09ea6ba
BC
683 switch(tag) {
684 case 0x4403:
b7effd4e 685 package->tracks_count = avio_rb32(pb);
d09ea6ba 686 if (package->tracks_count >= UINT_MAX / sizeof(UID))
bcd5d979 687 return AVERROR_INVALIDDATA;
d09ea6ba
BC
688 package->tracks_refs = av_malloc(package->tracks_count * sizeof(UID));
689 if (!package->tracks_refs)
bcd5d979 690 return AVERROR(ENOMEM);
45a8a02a 691 avio_skip(pb, 4); /* useless size of objects, always 16 according to specs */
b7effd4e 692 avio_read(pb, (uint8_t *)package->tracks_refs, package->tracks_count * sizeof(UID));
d09ea6ba
BC
693 break;
694 case 0x4401:
695 /* UMID, only get last 16 bytes */
45a8a02a 696 avio_skip(pb, 16);
b7effd4e 697 avio_read(pb, package->package_uid, 16);
d09ea6ba
BC
698 break;
699 case 0x4701:
b7effd4e 700 avio_read(pb, package->descriptor_ref, 16);
d09ea6ba
BC
701 break;
702 }
703 return 0;
704}
705
682b6db7
JG
706static int mxf_read_index_entry_array(AVIOContext *pb, MXFIndexTableSegment *segment)
707{
fc857294 708 int i, length;
682b6db7
JG
709
710 segment->nb_index_entries = avio_rb32(pb);
711 if (!segment->nb_index_entries)
712 return 0;
713 else if (segment->nb_index_entries < 0 ||
714 segment->nb_index_entries >
fdaad635 715 (INT_MAX / sizeof(*segment->stream_offset_entries)))
682b6db7
JG
716 return AVERROR(ENOMEM);
717
718 length = avio_rb32(pb);
719
21cc4b33
TH
720 segment->temporal_offset_entries = av_mallocz(segment->nb_index_entries *
721 sizeof(*segment->temporal_offset_entries));
722 segment->flag_entries = av_mallocz(segment->nb_index_entries *
723 sizeof(*segment->flag_entries));
724 segment->stream_offset_entries = av_mallocz(segment->nb_index_entries *
725 sizeof(*segment->stream_offset_entries));
21cc4b33 726
fc857294
TH
727 if (!segment->flag_entries || !segment->stream_offset_entries ||
728 !segment->temporal_offset_entries) {
729 av_freep(&segment->flag_entries);
730 av_freep(&segment->stream_offset_entries);
731 av_freep(&segment->temporal_offset_entries);
732 return AVERROR(ENOMEM);
733 }
682b6db7
JG
734
735 for (i = 0; i < segment->nb_index_entries; i++) {
21cc4b33
TH
736 segment->temporal_offset_entries[i] = avio_r8(pb);
737 avio_r8(pb); /* KeyFrameOffset */
682b6db7
JG
738 segment->flag_entries[i] = avio_r8(pb);
739 segment->stream_offset_entries[i] = avio_rb64(pb);
fc857294 740 avio_skip(pb, length - 11);
682b6db7
JG
741 }
742 return 0;
682b6db7
JG
743}
744
21cc4b33 745static int mxf_read_index_table_segment(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
861b4f01 746{
682b6db7 747 MXFIndexTableSegment *segment = arg;
861b4f01 748 switch(tag) {
682b6db7
JG
749 case 0x3F05:
750 segment->edit_unit_byte_count = avio_rb32(pb);
751 av_dlog(NULL, "EditUnitByteCount %d\n", segment->edit_unit_byte_count);
752 break;
753 case 0x3F06:
754 segment->index_sid = avio_rb32(pb);
755 av_dlog(NULL, "IndexSID %d\n", segment->index_sid);
756 break;
757 case 0x3F07:
758 segment->body_sid = avio_rb32(pb);
759 av_dlog(NULL, "BodySID %d\n", segment->body_sid);
760 break;
682b6db7
JG
761 case 0x3F0A:
762 av_dlog(NULL, "IndexEntryArray found\n");
763 return mxf_read_index_entry_array(pb, segment);
764 case 0x3F0B:
765 segment->index_edit_rate.num = avio_rb32(pb);
766 segment->index_edit_rate.den = avio_rb32(pb);
767 av_dlog(NULL, "IndexEditRate %d/%d\n", segment->index_edit_rate.num,
768 segment->index_edit_rate.den);
769 break;
770 case 0x3F0C:
771 segment->index_start_position = avio_rb64(pb);
772 av_dlog(NULL, "IndexStartPosition %"PRId64"\n", segment->index_start_position);
773 break;
774 case 0x3F0D:
775 segment->index_duration = avio_rb64(pb);
776 av_dlog(NULL, "IndexDuration %"PRId64"\n", segment->index_duration);
777 break;
861b4f01
BC
778 }
779 return 0;
780}
781
ae628ec1 782static void mxf_read_pixel_layout(AVIOContext *pb, MXFDescriptor *descriptor)
d09ea6ba 783{
11fdc4d4 784 int code, value, ofs = 0;
354b7573 785 char layout[16] = {0};
d09ea6ba
BC
786
787 do {
b7effd4e
AK
788 code = avio_r8(pb);
789 value = avio_r8(pb);
dfd2a005 790 av_dlog(NULL, "pixel layout: code %#x\n", code);
11fdc4d4
TH
791
792 if (ofs < 16) {
793 layout[ofs++] = code;
794 layout[ofs++] = value;
d09ea6ba
BC
795 }
796 } while (code != 0); /* SMPTE 377M E.2.46 */
11fdc4d4
TH
797
798 ff_mxf_decode_pixel_layout(layout, &descriptor->pix_fmt);
d09ea6ba
BC
799}
800
21cc4b33 801static int mxf_read_generic_descriptor(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
d09ea6ba 802{
39bb30f6 803 MXFDescriptor *descriptor = arg;
716d413c 804 descriptor->pix_fmt = AV_PIX_FMT_NONE;
d09ea6ba
BC
805 switch(tag) {
806 case 0x3F01:
b7effd4e 807 descriptor->sub_descriptors_count = avio_rb32(pb);
d09ea6ba 808 if (descriptor->sub_descriptors_count >= UINT_MAX / sizeof(UID))
bcd5d979 809 return AVERROR_INVALIDDATA;
d09ea6ba
BC
810 descriptor->sub_descriptors_refs = av_malloc(descriptor->sub_descriptors_count * sizeof(UID));
811 if (!descriptor->sub_descriptors_refs)
bcd5d979 812 return AVERROR(ENOMEM);
45a8a02a 813 avio_skip(pb, 4); /* useless size of objects, always 16 according to specs */
b7effd4e 814 avio_read(pb, (uint8_t *)descriptor->sub_descriptors_refs, descriptor->sub_descriptors_count * sizeof(UID));
d09ea6ba
BC
815 break;
816 case 0x3004:
b7effd4e 817 avio_read(pb, descriptor->essence_container_ul, 16);
d09ea6ba
BC
818 break;
819 case 0x3006:
b7effd4e 820 descriptor->linked_track_id = avio_rb32(pb);
d09ea6ba
BC
821 break;
822 case 0x3201: /* PictureEssenceCoding */
b7effd4e 823 avio_read(pb, descriptor->essence_codec_ul, 16);
d09ea6ba
BC
824 break;
825 case 0x3203:
b7effd4e 826 descriptor->width = avio_rb32(pb);
d09ea6ba
BC
827 break;
828 case 0x3202:
b7effd4e 829 descriptor->height = avio_rb32(pb);
d09ea6ba 830 break;
634d6705
JA
831 case 0x320C:
832 descriptor->frame_layout = avio_r8(pb);
833 break;
d09ea6ba 834 case 0x320E:
b7effd4e
AK
835 descriptor->aspect_ratio.num = avio_rb32(pb);
836 descriptor->aspect_ratio.den = avio_rb32(pb);
d09ea6ba 837 break;
c7166248
MB
838 case 0x3212:
839 descriptor->field_dominance = avio_r8(pb);
840 break;
fda891e1
PN
841 case 0x3301:
842 descriptor->component_depth = avio_rb32(pb);
843 break;
844 case 0x3302:
845 descriptor->horiz_subsampling = avio_rb32(pb);
846 break;
847 case 0x3308:
848 descriptor->vert_subsampling = avio_rb32(pb);
849 break;
d09ea6ba 850 case 0x3D03:
b7effd4e
AK
851 descriptor->sample_rate.num = avio_rb32(pb);
852 descriptor->sample_rate.den = avio_rb32(pb);
d09ea6ba
BC
853 break;
854 case 0x3D06: /* SoundEssenceCompression */
b7effd4e 855 avio_read(pb, descriptor->essence_codec_ul, 16);
d09ea6ba
BC
856 break;
857 case 0x3D07:
b7effd4e 858 descriptor->channels = avio_rb32(pb);
d09ea6ba
BC
859 break;
860 case 0x3D01:
b7effd4e 861 descriptor->bits_per_sample = avio_rb32(pb);
d09ea6ba
BC
862 break;
863 case 0x3401:
864 mxf_read_pixel_layout(pb, descriptor);
865 break;
866 default:
867 /* Private uid used by SONY C0023S01.mxf */
868 if (IS_KLV_KEY(uid, mxf_sony_mpeg4_extradata)) {
0d6605c7
MN
869 av_free(descriptor->extradata);
870 descriptor->extradata_size = 0;
1f6f58d5 871 descriptor->extradata = av_malloc(size + FF_INPUT_BUFFER_PADDING_SIZE);
d09ea6ba 872 if (!descriptor->extradata)
bcd5d979 873 return AVERROR(ENOMEM);
d09ea6ba 874 descriptor->extradata_size = size;
b7effd4e 875 avio_read(pb, descriptor->extradata, size);
d09ea6ba
BC
876 }
877 break;
878 }
879 return 0;
880}
881
d09ea6ba
BC
882/*
883 * Match an uid independently of the version byte and up to len common bytes
884 * Returns: boolean
885 */
886static int mxf_match_uid(const UID key, const UID uid, int len)
887{
888 int i;
889 for (i = 0; i < len; i++) {
890 if (i != 7 && key[i] != uid[i])
891 return 0;
892 }
893 return 1;
894}
895
896static const MXFCodecUL *mxf_get_codec_ul(const MXFCodecUL *uls, UID *uid)
897{
5ac4d768 898 while (uls->uid[0]) {
d09ea6ba
BC
899 if(mxf_match_uid(uls->uid, *uid, uls->matching_len))
900 break;
901 uls++;
902 }
903 return uls;
904}
905
d09ea6ba
BC
906static void *mxf_resolve_strong_ref(MXFContext *mxf, UID *strong_ref, enum MXFMetadataSetType type)
907{
908 int i;
909
910 if (!strong_ref)
911 return NULL;
912 for (i = 0; i < mxf->metadata_sets_count; i++) {
913 if (!memcmp(*strong_ref, mxf->metadata_sets[i]->uid, 16) &&
914 (type == AnyType || mxf->metadata_sets[i]->type == type)) {
915 return mxf->metadata_sets[i];
916 }
917 }
918 return NULL;
919}
920
44deb9f6 921static const MXFCodecUL mxf_picture_essence_container_uls[] = {
4ee873e3 922 // video essence container uls
36ef5369
AK
923 { { 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 */
924 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x41,0x01 }, 14, AV_CODEC_ID_DVVIDEO }, /* DV 625 25mbps */
925 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x05,0x00,0x00 }, 14, AV_CODEC_ID_RAWVIDEO }, /* Uncompressed Picture */
926 { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, AV_CODEC_ID_NONE },
44deb9f6 927};
5ed032fb
TH
928
929/* EC ULs for intra-only formats */
930static const MXFCodecUL mxf_intra_only_essence_container_uls[] = {
36ef5369
AK
931 { { 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 */
932 { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, AV_CODEC_ID_NONE },
5ed032fb
TH
933};
934
935/* intra-only PictureEssenceCoding ULs, where no corresponding EC UL exists */
936static const MXFCodecUL mxf_intra_only_picture_essence_coding_uls[] = {
36ef5369 937 { { 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 */
054454c6 938 { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x07,0x04,0x01,0x02,0x02,0x03,0x01,0x01,0x00 }, 14, AV_CODEC_ID_JPEG2000 }, /* JPEG2000 Codestream */
36ef5369 939 { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, AV_CODEC_ID_NONE },
5ed032fb
TH
940};
941
44deb9f6 942static const MXFCodecUL mxf_sound_essence_container_uls[] = {
4ee873e3 943 // sound essence container uls
36ef5369
AK
944 { { 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 */
945 { { 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 */
946 { { 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 */
947 { { 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 */
948 { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, AV_CODEC_ID_NONE },
4ee873e3
BC
949};
950
682b6db7
JG
951static int mxf_get_sorted_table_segments(MXFContext *mxf, int *nb_sorted_segments, MXFIndexTableSegment ***sorted_segments)
952{
953 int i, j, nb_segments = 0;
954 MXFIndexTableSegment **unsorted_segments;
955 int last_body_sid = -1, last_index_sid = -1, last_index_start = -1;
956
957 /* count number of segments, allocate arrays and copy unsorted segments */
958 for (i = 0; i < mxf->metadata_sets_count; i++)
959 if (mxf->metadata_sets[i]->type == IndexTableSegment)
960 nb_segments++;
961
bd141f5e
JG
962 if (!nb_segments)
963 return AVERROR_INVALIDDATA;
964
682b6db7
JG
965 *sorted_segments = av_mallocz(nb_segments * sizeof(**sorted_segments));
966 unsorted_segments = av_mallocz(nb_segments * sizeof(*unsorted_segments));
3b81bba3 967 if (!*sorted_segments || !unsorted_segments) {
682b6db7
JG
968 av_freep(sorted_segments);
969 av_free(unsorted_segments);
970 return AVERROR(ENOMEM);
971 }
972
973 for (i = j = 0; i < mxf->metadata_sets_count; i++)
974 if (mxf->metadata_sets[i]->type == IndexTableSegment)
975 unsorted_segments[j++] = (MXFIndexTableSegment*)mxf->metadata_sets[i];
976
977 *nb_sorted_segments = 0;
978
979 /* sort segments by {BodySID, IndexSID, IndexStartPosition}, remove duplicates while we're at it */
980 for (i = 0; i < nb_segments; i++) {
981 int best = -1, best_body_sid = -1, best_index_sid = -1, best_index_start = -1;
8b708f1c 982 uint64_t best_index_duration = 0;
682b6db7
JG
983
984 for (j = 0; j < nb_segments; j++) {
985 MXFIndexTableSegment *s = unsorted_segments[j];
986
987 /* Require larger BosySID, IndexSID or IndexStartPosition then the previous entry. This removes duplicates.
988 * We want the smallest values for the keys than what we currently have, unless this is the first such entry this time around.
8b708f1c 989 * If we come across an entry with the same IndexStartPosition but larger IndexDuration, then we'll prefer it over the one we currently have.
682b6db7
JG
990 */
991 if ((i == 0 || s->body_sid > last_body_sid || s->index_sid > last_index_sid || s->index_start_position > last_index_start) &&
8b708f1c
TH
992 (best == -1 || s->body_sid < best_body_sid || s->index_sid < best_index_sid || s->index_start_position < best_index_start ||
993 (s->index_start_position == best_index_start && s->index_duration > best_index_duration))) {
682b6db7
JG
994 best = j;
995 best_body_sid = s->body_sid;
996 best_index_sid = s->index_sid;
997 best_index_start = s->index_start_position;
8b708f1c 998 best_index_duration = s->index_duration;
682b6db7
JG
999 }
1000 }
1001
1002 /* no suitable entry found -> we're done */
1003 if (best == -1)
1004 break;
1005
1006 (*sorted_segments)[(*nb_sorted_segments)++] = unsorted_segments[best];
1007 last_body_sid = best_body_sid;
1008 last_index_sid = best_index_sid;
1009 last_index_start = best_index_start;
1010 }
1011
1012 av_free(unsorted_segments);
1013
1014 return 0;
1015}
1016
3cb33fbe
TH
1017/**
1018 * Computes the absolute file offset of the given essence container offset
1019 */
1020static int mxf_absolute_bodysid_offset(MXFContext *mxf, int body_sid, int64_t offset, int64_t *offset_out)
1021{
1022 int x;
1023 int64_t offset_in = offset; /* for logging */
1024
1025 for (x = 0; x < mxf->partitions_count; x++) {
1026 MXFPartition *p = &mxf->partitions[x];
1027
1028 if (p->body_sid != body_sid)
1029 continue;
1030
1031 if (offset < p->essence_length || !p->essence_length) {
1032 *offset_out = p->essence_offset + offset;
1033 return 0;
1034 }
1035
1036 offset -= p->essence_length;
1037 }
1038
4fbd3e89
JF
1039 av_log(mxf->fc, AV_LOG_ERROR,
1040 "failed to find absolute offset of %"PRIX64" in BodySID %i - partial file?\n",
3cb33fbe
TH
1041 offset_in, body_sid);
1042
1043 return AVERROR_INVALIDDATA;
1044}
1045
f028d4d1
JG
1046/**
1047 * Returns the end position of the essence container with given BodySID, or zero if unknown
1048 */
1049static int64_t mxf_essence_container_end(MXFContext *mxf, int body_sid)
682b6db7 1050{
f028d4d1
JG
1051 int x;
1052 int64_t ret = 0;
f4187945 1053
f028d4d1
JG
1054 for (x = 0; x < mxf->partitions_count; x++) {
1055 MXFPartition *p = &mxf->partitions[x];
1056
1057 if (p->body_sid != body_sid)
1058 continue;
1059
1060 if (!p->essence_length)
1061 return 0;
1062
1063 ret = p->essence_offset + p->essence_length;
f4187945 1064 }
682b6db7 1065
f028d4d1
JG
1066 return ret;
1067}
682b6db7 1068
f028d4d1
JG
1069/* EditUnit -> absolute offset */
1070static 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)
1071{
1072 int i;
62271c4c 1073 int64_t offset_temp = 0;
682b6db7 1074
f028d4d1
JG
1075 for (i = 0; i < index_table->nb_segments; i++) {
1076 MXFIndexTableSegment *s = index_table->segments[i];
682b6db7 1077
f028d4d1 1078 edit_unit = FFMAX(edit_unit, s->index_start_position); /* clamp if trying to seek before start */
682b6db7 1079
f028d4d1
JG
1080 if (edit_unit < s->index_start_position + s->index_duration) {
1081 int64_t index = edit_unit - s->index_start_position;
1082
1083 if (s->edit_unit_byte_count)
1084 offset_temp += s->edit_unit_byte_count * index;
1085 else if (s->nb_index_entries) {
1086 if (s->nb_index_entries == 2 * s->index_duration + 1)
1087 index *= 2; /* Avid index */
1088
f39bbc9d 1089 if (index < 0 || index >= s->nb_index_entries) {
f028d4d1
JG
1090 av_log(mxf->fc, AV_LOG_ERROR, "IndexSID %i segment at %"PRId64" IndexEntryArray too small\n",
1091 index_table->index_sid, s->index_start_position);
1092 return AVERROR_INVALIDDATA;
682b6db7 1093 }
682b6db7 1094
f028d4d1
JG
1095 offset_temp = s->stream_offset_entries[index];
1096 } else {
1097 av_log(mxf->fc, AV_LOG_ERROR, "IndexSID %i segment at %"PRId64" missing EditUnitByteCount and IndexEntryArray\n",
1098 index_table->index_sid, s->index_start_position);
1099 return AVERROR_INVALIDDATA;
3cb33fbe 1100 }
682b6db7 1101
f028d4d1
JG
1102 if (edit_unit_out)
1103 *edit_unit_out = edit_unit;
682b6db7 1104
f028d4d1
JG
1105 return mxf_absolute_bodysid_offset(mxf, index_table->body_sid, offset_temp, offset_out);
1106 } else {
1107 /* EditUnitByteCount == 0 for VBR indexes, which is fine since they use explicit StreamOffsets */
1108 offset_temp += s->edit_unit_byte_count * s->index_duration;
682b6db7 1109 }
682b6db7
JG
1110 }
1111
f028d4d1
JG
1112 if (nag)
1113 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);
1114
1115 return AVERROR_INVALIDDATA;
1116}
1117
1118static int mxf_compute_ptses_fake_index(MXFContext *mxf, MXFIndexTable *index_table)
1119{
1120 int i, j, x;
1121 int8_t max_temporal_offset = -128;
1122
1123 /* first compute how many entries we have */
1124 for (i = 0; i < index_table->nb_segments; i++) {
1125 MXFIndexTableSegment *s = index_table->segments[i];
1126
d00257e9
TH
1127 if (!s->nb_index_entries) {
1128 index_table->nb_ptses = 0;
f028d4d1 1129 return 0; /* no TemporalOffsets */
d00257e9 1130 }
f028d4d1
JG
1131
1132 index_table->nb_ptses += s->index_duration;
1133 }
1134
1135 /* paranoid check */
1136 if (index_table->nb_ptses <= 0)
1137 return 0;
1138
fdaad635 1139 if (index_table->nb_ptses > INT_MAX / sizeof(AVIndexEntry))
f028d4d1
JG
1140 return AVERROR(ENOMEM);
1141
1142 index_table->ptses = av_mallocz(index_table->nb_ptses *
1143 sizeof(int64_t));
1144 index_table->fake_index = av_mallocz(index_table->nb_ptses *
1145 sizeof(AVIndexEntry));
1146 if (!index_table->ptses || !index_table->fake_index) {
1147 av_freep(&index_table->ptses);
1148 return AVERROR(ENOMEM);
1149 }
1150
1151 /* we may have a few bad TemporalOffsets
1152 * make sure the corresponding PTSes don't have the bogus value 0 */
1153 for (x = 0; x < index_table->nb_ptses; x++)
1154 index_table->ptses[x] = AV_NOPTS_VALUE;
1155
1156 /**
1157 * We have this:
1158 *
1159 * x TemporalOffset
1160 * 0: 0
1161 * 1: 1
1162 * 2: 1
1163 * 3: -2
1164 * 4: 1
1165 * 5: 1
1166 * 6: -2
1167 *
1168 * We want to transform it into this:
1169 *
1170 * x DTS PTS
1171 * 0: -1 0
1172 * 1: 0 3
1173 * 2: 1 1
1174 * 3: 2 2
1175 * 4: 3 6
1176 * 5: 4 4
1177 * 6: 5 5
1178 *
1179 * We do this by bucket sorting x by x+TemporalOffset[x] into mxf->ptses,
1180 * then settings mxf->first_dts = -max(TemporalOffset[x]).
1181 * The latter makes DTS <= PTS.
1182 */
1183 for (i = x = 0; i < index_table->nb_segments; i++) {
1184 MXFIndexTableSegment *s = index_table->segments[i];
1185 int index_delta = 1;
e24167aa 1186 int n = s->nb_index_entries;
f028d4d1 1187
e24167aa 1188 if (s->nb_index_entries == 2 * s->index_duration + 1) {
f028d4d1 1189 index_delta = 2; /* Avid index */
e24167aa
TH
1190 /* ignore the last entry - it's the size of the essence container */
1191 n--;
1192 }
f028d4d1 1193
e24167aa 1194 for (j = 0; j < n; j += index_delta, x++) {
f028d4d1
JG
1195 int offset = s->temporal_offset_entries[j] / index_delta;
1196 int index = x + offset;
1197
a3923482
TH
1198 if (x >= index_table->nb_ptses) {
1199 av_log(mxf->fc, AV_LOG_ERROR,
1200 "x >= nb_ptses - IndexEntryCount %i < IndexDuration %"PRId64"?\n",
1201 s->nb_index_entries, s->index_duration);
1202 break;
1203 }
1204
f028d4d1
JG
1205 index_table->fake_index[x].timestamp = x;
1206 index_table->fake_index[x].flags = !(s->flag_entries[j] & 0x30) ? AVINDEX_KEYFRAME : 0;
1207
1208 if (index < 0 || index >= index_table->nb_ptses) {
1209 av_log(mxf->fc, AV_LOG_ERROR,
1210 "index entry %i + TemporalOffset %i = %i, which is out of bounds\n",
1211 x, offset, index);
1212 continue;
1213 }
1214
1215 index_table->ptses[index] = x;
1216 max_temporal_offset = FFMAX(max_temporal_offset, offset);
1217 }
1218 }
1219
1220 index_table->first_dts = -max_temporal_offset;
682b6db7
JG
1221
1222 return 0;
1223}
1224
f028d4d1
JG
1225/**
1226 * Sorts and collects index table segments into index tables.
1227 * Also computes PTSes if possible.
1228 */
1229static int mxf_compute_index_tables(MXFContext *mxf)
1230{
1231 int i, j, k, ret, nb_sorted_segments;
1232 MXFIndexTableSegment **sorted_segments = NULL;
1233
1234 if ((ret = mxf_get_sorted_table_segments(mxf, &nb_sorted_segments, &sorted_segments)) ||
1235 nb_sorted_segments <= 0) {
1236 av_log(mxf->fc, AV_LOG_WARNING, "broken or empty index\n");
1237 return 0;
1238 }
1239
1240 /* sanity check and count unique BodySIDs/IndexSIDs */
1241 for (i = 0; i < nb_sorted_segments; i++) {
1242 if (i == 0 || sorted_segments[i-1]->index_sid != sorted_segments[i]->index_sid)
1243 mxf->nb_index_tables++;
1244 else if (sorted_segments[i-1]->body_sid != sorted_segments[i]->body_sid) {
1245 av_log(mxf->fc, AV_LOG_ERROR, "found inconsistent BodySID\n");
1246 ret = AVERROR_INVALIDDATA;
1247 goto finish_decoding_index;
1248 }
1249 }
1250
1a4e4ad0
LB
1251 mxf->index_tables = av_mallocz_array(mxf->nb_index_tables,
1252 sizeof(*mxf->index_tables));
1253 if (!mxf->index_tables) {
f028d4d1
JG
1254 av_log(mxf->fc, AV_LOG_ERROR, "failed to allocate index tables\n");
1255 ret = AVERROR(ENOMEM);
1256 goto finish_decoding_index;
1257 }
1258
1259 /* distribute sorted segments to index tables */
1260 for (i = j = 0; i < nb_sorted_segments; i++) {
1261 if (i != 0 && sorted_segments[i-1]->index_sid != sorted_segments[i]->index_sid) {
1262 /* next IndexSID */
1263 j++;
1264 }
1265
1266 mxf->index_tables[j].nb_segments++;
1267 }
1268
1269 for (i = j = 0; j < mxf->nb_index_tables; i += mxf->index_tables[j++].nb_segments) {
1270 MXFIndexTable *t = &mxf->index_tables[j];
1271
1a4e4ad0
LB
1272 t->segments = av_mallocz_array(t->nb_segments,
1273 sizeof(*t->segments));
1274
1275 if (!t->segments) {
f028d4d1
JG
1276 av_log(mxf->fc, AV_LOG_ERROR, "failed to allocate IndexTableSegment"
1277 " pointer array\n");
1278 ret = AVERROR(ENOMEM);
1279 goto finish_decoding_index;
1280 }
1281
1282 if (sorted_segments[i]->index_start_position)
1283 av_log(mxf->fc, AV_LOG_WARNING, "IndexSID %i starts at EditUnit %"PRId64" - seeking may not work as expected\n",
1284 sorted_segments[i]->index_sid, sorted_segments[i]->index_start_position);
1285
1286 memcpy(t->segments, &sorted_segments[i], t->nb_segments * sizeof(MXFIndexTableSegment*));
1287 t->index_sid = sorted_segments[i]->index_sid;
1288 t->body_sid = sorted_segments[i]->body_sid;
1289
1290 if ((ret = mxf_compute_ptses_fake_index(mxf, t)) < 0)
1291 goto finish_decoding_index;
1292
1293 /* fix zero IndexDurations */
1294 for (k = 0; k < t->nb_segments; k++) {
1295 if (t->segments[k]->index_duration)
1296 continue;
1297
1298 if (t->nb_segments > 1)
1299 av_log(mxf->fc, AV_LOG_WARNING, "IndexSID %i segment %i has zero IndexDuration and there's more than one segment\n",
1300 t->index_sid, k);
1301
1302 if (mxf->fc->nb_streams <= 0) {
1303 av_log(mxf->fc, AV_LOG_WARNING, "no streams?\n");
1304 break;
1305 }
1306
1307 /* assume the first stream's duration is reasonable
1308 * leave index_duration = 0 on further segments in case we have any (unlikely)
1309 */
1310 t->segments[k]->index_duration = mxf->fc->streams[0]->duration;
1311 break;
1312 }
1313 }
1314
1315 ret = 0;
1316finish_decoding_index:
1317 av_free(sorted_segments);
1318 return ret;
1319}
1320
5ed032fb
TH
1321static int mxf_is_intra_only(MXFDescriptor *d)
1322{
1323 return mxf_get_codec_ul(mxf_intra_only_essence_container_uls,
36ef5369 1324 &d->essence_container_ul)->id != AV_CODEC_ID_NONE ||
5ed032fb 1325 mxf_get_codec_ul(mxf_intra_only_picture_essence_coding_uls,
36ef5369 1326 &d->essence_codec_ul)->id != AV_CODEC_ID_NONE;
5ed032fb
TH
1327}
1328
d09ea6ba
BC
1329static int mxf_parse_structural_metadata(MXFContext *mxf)
1330{
1331 MXFPackage *material_package = NULL;
1332 MXFPackage *temp_package = NULL;
682b6db7 1333 int i, j, k, ret;
d09ea6ba 1334
dfd2a005 1335 av_dlog(mxf->fc, "metadata sets count %d\n", mxf->metadata_sets_count);
d09ea6ba
BC
1336 /* TODO: handle multiple material packages (OP3x) */
1337 for (i = 0; i < mxf->packages_count; i++) {
1338 material_package = mxf_resolve_strong_ref(mxf, &mxf->packages_refs[i], MaterialPackage);
1339 if (material_package) break;
1340 }
1341 if (!material_package) {
1342 av_log(mxf->fc, AV_LOG_ERROR, "no material package found\n");
bcd5d979 1343 return AVERROR_INVALIDDATA;
d09ea6ba
BC
1344 }
1345
1346 for (i = 0; i < material_package->tracks_count; i++) {
1347 MXFPackage *source_package = NULL;
1348 MXFTrack *material_track = NULL;
1349 MXFTrack *source_track = NULL;
1350 MXFTrack *temp_track = NULL;
1351 MXFDescriptor *descriptor = NULL;
1352 MXFStructuralComponent *component = NULL;
1353 UID *essence_container_ul = NULL;
1354 const MXFCodecUL *codec_ul = NULL;
1355 const MXFCodecUL *container_ul = NULL;
fda891e1 1356 const MXFCodecUL *pix_fmt_ul = NULL;
d09ea6ba
BC
1357 AVStream *st;
1358
1359 if (!(material_track = mxf_resolve_strong_ref(mxf, &material_package->tracks_refs[i], Track))) {
1360 av_log(mxf->fc, AV_LOG_ERROR, "could not resolve material track strong ref\n");
1361 continue;
1362 }
1363
1364 if (!(material_track->sequence = mxf_resolve_strong_ref(mxf, &material_track->sequence_ref, Sequence))) {
1365 av_log(mxf->fc, AV_LOG_ERROR, "could not resolve material track sequence strong ref\n");
1e699993 1366 continue;
d09ea6ba
BC
1367 }
1368
1369 /* TODO: handle multiple source clips */
1370 for (j = 0; j < material_track->sequence->structural_components_count; j++) {
1371 /* TODO: handle timecode component */
1372 component = mxf_resolve_strong_ref(mxf, &material_track->sequence->structural_components_refs[j], SourceClip);
1373 if (!component)
1374 continue;
1375
1376 for (k = 0; k < mxf->packages_count; k++) {
1377 temp_package = mxf_resolve_strong_ref(mxf, &mxf->packages_refs[k], SourcePackage);
1378 if (!temp_package)
1379 continue;
1380 if (!memcmp(temp_package->package_uid, component->source_package_uid, 16)) {
1381 source_package = temp_package;
1382 break;
1383 }
1384 }
1385 if (!source_package) {
21cc4b33 1386 av_dlog(mxf->fc, "material track %d: no corresponding source package found\n", material_track->track_id);
d09ea6ba
BC
1387 break;
1388 }
1389 for (k = 0; k < source_package->tracks_count; k++) {
1390 if (!(temp_track = mxf_resolve_strong_ref(mxf, &source_package->tracks_refs[k], Track))) {
1391 av_log(mxf->fc, AV_LOG_ERROR, "could not resolve source track strong ref\n");
f028d4d1
JG
1392 ret = AVERROR_INVALIDDATA;
1393 goto fail_and_free;
d09ea6ba
BC
1394 }
1395 if (temp_track->track_id == component->source_track_id) {
1396 source_track = temp_track;
1397 break;
1398 }
1399 }
1400 if (!source_track) {
1401 av_log(mxf->fc, AV_LOG_ERROR, "material track %d: no corresponding source track found\n", material_track->track_id);
1402 break;
1403 }
1404 }
effe3b95 1405 if (!source_track || !component)
d09ea6ba
BC
1406 continue;
1407
09991519
TH
1408 if (!(source_track->sequence = mxf_resolve_strong_ref(mxf, &source_track->sequence_ref, Sequence))) {
1409 av_log(mxf->fc, AV_LOG_ERROR, "could not resolve source track sequence strong ref\n");
f028d4d1
JG
1410 ret = AVERROR_INVALIDDATA;
1411 goto fail_and_free;
09991519
TH
1412 }
1413
1414 /* 0001GL00.MXF.A1.mxf_opatom.mxf has the same SourcePackageID as 0001GL.MXF.V1.mxf_opatom.mxf
1415 * This would result in both files appearing to have two streams. Work around this by sanity checking DataDefinition */
1416 if (memcmp(material_track->sequence->data_definition_ul, source_track->sequence->data_definition_ul, 16)) {
1417 av_log(mxf->fc, AV_LOG_ERROR, "material track %d: DataDefinition mismatch\n", material_track->track_id);
1418 continue;
1419 }
1420
84ad31ff 1421 st = avformat_new_stream(mxf->fc, NULL);
d09ea6ba
BC
1422 if (!st) {
1423 av_log(mxf->fc, AV_LOG_ERROR, "could not allocate stream\n");
f028d4d1
JG
1424 ret = AVERROR(ENOMEM);
1425 goto fail_and_free;
d09ea6ba 1426 }
84ad31ff 1427 st->id = source_track->track_id;
d09ea6ba 1428 st->priv_data = source_track;
5b930092 1429 source_track->original_duration = st->duration = component->duration;
d09ea6ba
BC
1430 if (st->duration == -1)
1431 st->duration = AV_NOPTS_VALUE;
1432 st->start_time = component->start_position;
7d56f2ff
LB
1433 if (material_track->edit_rate.num <= 0 ||
1434 material_track->edit_rate.den <= 0) {
1435 av_log(mxf->fc, AV_LOG_WARNING,
1436 "Invalid edit rate (%d/%d) found on stream #%d, "
1437 "defaulting to 25/1\n",
1438 material_track->edit_rate.num,
1439 material_track->edit_rate.den, st->index);
1440 material_track->edit_rate = (AVRational){25, 1};
1441 }
5255ca24 1442 avpriv_set_pts_info(st, 64, material_track->edit_rate.den, material_track->edit_rate.num);
d09ea6ba 1443
5b930092
MB
1444 /* ensure SourceTrack EditRate == MaterialTrack EditRate since only
1445 * the former is accessible via st->priv_data */
1446 source_track->edit_rate = material_track->edit_rate;
1447
d09ea6ba 1448 PRINT_KEY(mxf->fc, "data definition ul", source_track->sequence->data_definition_ul);
5ac4d768
BC
1449 codec_ul = mxf_get_codec_ul(ff_mxf_data_definition_uls, &source_track->sequence->data_definition_ul);
1450 st->codec->codec_type = codec_ul->id;
d09ea6ba
BC
1451
1452 source_package->descriptor = mxf_resolve_strong_ref(mxf, &source_package->descriptor_ref, AnyType);
1453 if (source_package->descriptor) {
1454 if (source_package->descriptor->type == MultipleDescriptor) {
1455 for (j = 0; j < source_package->descriptor->sub_descriptors_count; j++) {
1456 MXFDescriptor *sub_descriptor = mxf_resolve_strong_ref(mxf, &source_package->descriptor->sub_descriptors_refs[j], Descriptor);
1457
1458 if (!sub_descriptor) {
1459 av_log(mxf->fc, AV_LOG_ERROR, "could not resolve sub descriptor strong ref\n");
1460 continue;
1461 }
1462 if (sub_descriptor->linked_track_id == source_track->track_id) {
1463 descriptor = sub_descriptor;
1464 break;
1465 }
1466 }
1467 } else if (source_package->descriptor->type == Descriptor)
1468 descriptor = source_package->descriptor;
1469 }
1470 if (!descriptor) {
1471 av_log(mxf->fc, AV_LOG_INFO, "source track %d: stream %d, no descriptor found\n", source_track->track_id, st->index);
1472 continue;
1473 }
d09ea6ba
BC
1474 PRINT_KEY(mxf->fc, "essence codec ul", descriptor->essence_codec_ul);
1475 PRINT_KEY(mxf->fc, "essence container ul", descriptor->essence_container_ul);
d09ea6ba
BC
1476 essence_container_ul = &descriptor->essence_container_ul;
1477 /* HACK: replacing the original key with mxf_encrypted_essence_container
1478 * is not allowed according to s429-6, try to find correct information anyway */
1479 if (IS_KLV_KEY(essence_container_ul, mxf_encrypted_essence_container)) {
1480 av_log(mxf->fc, AV_LOG_INFO, "broken encrypted mxf file\n");
1481 for (k = 0; k < mxf->metadata_sets_count; k++) {
1482 MXFMetadataSet *metadata = mxf->metadata_sets[k];
1483 if (metadata->type == CryptoContext) {
1484 essence_container_ul = &((MXFCryptoContext *)metadata)->source_container_ul;
1485 break;
1486 }
1487 }
1488 }
f028d4d1 1489
d09ea6ba 1490 /* TODO: drop PictureEssenceCoding and SoundEssenceCompression, only check EssenceContainer */
c69968b4 1491 codec_ul = mxf_get_codec_ul(ff_mxf_codec_uls, &descriptor->essence_codec_ul);
d09ea6ba 1492 st->codec->codec_id = codec_ul->id;
ecf442a5 1493
72415b2a 1494 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
5ed032fb 1495 source_track->intra_only = mxf_is_intra_only(descriptor);
44deb9f6 1496 container_ul = mxf_get_codec_ul(mxf_picture_essence_container_uls, essence_container_ul);
36ef5369 1497 if (st->codec->codec_id == AV_CODEC_ID_NONE)
d09ea6ba
BC
1498 st->codec->codec_id = container_ul->id;
1499 st->codec->width = descriptor->width;
634d6705 1500 /* Field height, not frame height */
d09ea6ba 1501 st->codec->height = descriptor->height;
634d6705
JA
1502 switch (descriptor->frame_layout) {
1503 case SegmentedFrame:
1504 /* This one is a weird layout I don't fully understand. */
1505 av_log(mxf->fc, AV_LOG_INFO,
1506 "SegmentedFrame layout isn't currently supported\n");
1507 break;
1508 case FullFrame:
d84bd465 1509 st->codec->field_order = AV_FIELD_PROGRESSIVE;
634d6705
JA
1510 break;
1511 case OneField:
1512 /* Every other line is stored and needs to be duplicated. */
1513 av_log(mxf->fc, AV_LOG_INFO,
1514 "OneField frame layout isn't currently supported\n");
1515 break;
1516 /* The correct thing to do here is fall through, but by
1517 * breaking we might be able to decode some streams at half
1518 * the vertical resolution, rather than not al all.
1519 * It's also for compatibility with the old behavior. */
1520 case SeparateFields:
1521 case MixedFields:
c7166248
MB
1522 switch (descriptor->field_dominance) {
1523 case MXF_TFF:
1524 st->codec->field_order = AV_FIELD_TT;
1525 break;
1526 case MXF_BFF:
1527 st->codec->field_order = AV_FIELD_BB;
1528 break;
1529 default:
1530 avpriv_request_sample(mxf->fc,
1531 "Field dominance %d support",
1532 descriptor->field_dominance);
1533 break;
1534 }
634d6705
JA
1535 /* Turn field height into frame height. */
1536 st->codec->height *= 2;
1537 default:
1538 av_log(mxf->fc, AV_LOG_INFO,
1539 "Unknown frame layout type: %d\n",
1540 descriptor->frame_layout);
1541 }
36ef5369 1542 if (st->codec->codec_id == AV_CODEC_ID_RAWVIDEO) {
11fdc4d4 1543 st->codec->pix_fmt = descriptor->pix_fmt;
716d413c 1544 if (st->codec->pix_fmt == AV_PIX_FMT_NONE) {
fda891e1
PN
1545 pix_fmt_ul = mxf_get_codec_ul(ff_mxf_pixel_format_uls,
1546 &descriptor->essence_codec_ul);
1547 st->codec->pix_fmt = pix_fmt_ul->id;
716d413c 1548 if (st->codec->pix_fmt == AV_PIX_FMT_NONE) {
fda891e1
PN
1549 /* support files created before RP224v10 by defaulting to UYVY422
1550 if subsampling is 4:2:2 and component depth is 8-bit */
1551 if (descriptor->horiz_subsampling == 2 &&
1552 descriptor->vert_subsampling == 1 &&
1553 descriptor->component_depth == 8) {
716d413c 1554 st->codec->pix_fmt = AV_PIX_FMT_UYVY422;
fda891e1
PN
1555 }
1556 }
1557 }
1558 }
d09ea6ba 1559 st->need_parsing = AVSTREAM_PARSE_HEADERS;
72415b2a 1560 } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
44deb9f6 1561 container_ul = mxf_get_codec_ul(mxf_sound_essence_container_uls, essence_container_ul);
36ef5369 1562 if (st->codec->codec_id == AV_CODEC_ID_NONE)
d09ea6ba
BC
1563 st->codec->codec_id = container_ul->id;
1564 st->codec->channels = descriptor->channels;
dd1c8f3e 1565 st->codec->bits_per_coded_sample = descriptor->bits_per_sample;
d6b81ff9 1566
93370d12 1567 if (descriptor->sample_rate.den > 0) {
d6b81ff9 1568 st->codec->sample_rate = descriptor->sample_rate.num / descriptor->sample_rate.den;
93370d12
AK
1569 avpriv_set_pts_info(st, 64, descriptor->sample_rate.den, descriptor->sample_rate.num);
1570 } else {
1571 av_log(mxf->fc, AV_LOG_WARNING, "invalid sample rate (%d/%d) "
ad0560fe 1572 "found for stream #%d, time base forced to 1/48000\n",
93370d12
AK
1573 descriptor->sample_rate.num, descriptor->sample_rate.den,
1574 st->index);
1575 avpriv_set_pts_info(st, 64, 1, 48000);
1576 }
d6b81ff9 1577
5b930092
MB
1578 /* if duration is set, rescale it from EditRate to SampleRate */
1579 if (st->duration != AV_NOPTS_VALUE)
1580 st->duration = av_rescale_q(st->duration,
1581 av_inv_q(material_track->edit_rate),
1582 st->time_base);
1583
36ef5369
AK
1584 /* TODO: implement AV_CODEC_ID_RAWAUDIO */
1585 if (st->codec->codec_id == AV_CODEC_ID_PCM_S16LE) {
6547fd92 1586 if (descriptor->bits_per_sample > 16 && descriptor->bits_per_sample <= 24)
36ef5369 1587 st->codec->codec_id = AV_CODEC_ID_PCM_S24LE;
d09ea6ba 1588 else if (descriptor->bits_per_sample == 32)
36ef5369
AK
1589 st->codec->codec_id = AV_CODEC_ID_PCM_S32LE;
1590 } else if (st->codec->codec_id == AV_CODEC_ID_PCM_S16BE) {
6547fd92 1591 if (descriptor->bits_per_sample > 16 && descriptor->bits_per_sample <= 24)
36ef5369 1592 st->codec->codec_id = AV_CODEC_ID_PCM_S24BE;
d09ea6ba 1593 else if (descriptor->bits_per_sample == 32)
36ef5369
AK
1594 st->codec->codec_id = AV_CODEC_ID_PCM_S32BE;
1595 } else if (st->codec->codec_id == AV_CODEC_ID_MP2) {
d09ea6ba
BC
1596 st->need_parsing = AVSTREAM_PARSE_FULL;
1597 }
1598 }
ecf442a5
RD
1599 if (descriptor->extradata) {
1600 st->codec->extradata = av_mallocz(descriptor->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
95fd52c1 1601 if (st->codec->extradata) {
ecf442a5 1602 memcpy(st->codec->extradata, descriptor->extradata, descriptor->extradata_size);
95fd52c1
AK
1603 st->codec->extradata_size = descriptor->extradata_size;
1604 }
ecf442a5
RD
1605 } else if (st->codec->codec_id == AV_CODEC_ID_H264) {
1606 ret = ff_generate_avci_extradata(st);
1607 if (ret < 0)
1608 return ret;
1609 }
72415b2a 1610 if (st->codec->codec_type != AVMEDIA_TYPE_DATA && (*essence_container_ul)[15] > 0x01) {
f028d4d1
JG
1611 /* TODO: decode timestamps */
1612 st->need_parsing = AVSTREAM_PARSE_TIMESTAMPS;
d09ea6ba
BC
1613 }
1614 }
f028d4d1
JG
1615
1616 ret = 0;
1617fail_and_free:
1618 return ret;
d09ea6ba
BC
1619}
1620
1621static const MXFMetadataReadTableEntry mxf_metadata_read_table[] = {
1622 { { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x05,0x01,0x00 }, mxf_read_primer_pack },
d32b3f40
TH
1623 { { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02,0x01,0x00 }, mxf_read_partition_pack },
1624 { { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02,0x02,0x00 }, mxf_read_partition_pack },
1625 { { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02,0x03,0x00 }, mxf_read_partition_pack },
1626 { { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02,0x04,0x00 }, mxf_read_partition_pack },
1627 { { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x03,0x01,0x00 }, mxf_read_partition_pack },
1628 { { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x03,0x02,0x00 }, mxf_read_partition_pack },
1629 { { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x03,0x03,0x00 }, mxf_read_partition_pack },
1630 { { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x03,0x04,0x00 }, mxf_read_partition_pack },
1631 { { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x04,0x02,0x00 }, mxf_read_partition_pack },
1632 { { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x04,0x04,0x00 }, mxf_read_partition_pack },
d09ea6ba
BC
1633 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x18,0x00 }, mxf_read_content_storage, 0, AnyType },
1634 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x37,0x00 }, mxf_read_source_package, sizeof(MXFPackage), SourcePackage },
1635 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x36,0x00 }, mxf_read_material_package, sizeof(MXFPackage), MaterialPackage },
1636 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x0F,0x00 }, mxf_read_sequence, sizeof(MXFSequence), Sequence },
1637 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x11,0x00 }, mxf_read_source_clip, sizeof(MXFStructuralComponent), SourceClip },
1638 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x44,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), MultipleDescriptor },
1639 { { 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 */
1640 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x28,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* CDCI */
1641 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x29,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* RGBA */
1642 { { 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 */
1643 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* Wave */
1644 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* AES3 */
1645 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x3A,0x00 }, mxf_read_track, sizeof(MXFTrack), Track }, /* Static Track */
1646 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x3B,0x00 }, mxf_read_track, sizeof(MXFTrack), Track }, /* Generic Track */
1647 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x04,0x01,0x02,0x02,0x00,0x00 }, mxf_read_cryptographic_context, sizeof(MXFCryptoContext), CryptoContext },
861b4f01 1648 { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x10,0x01,0x00 }, mxf_read_index_table_segment, sizeof(MXFIndexTableSegment), IndexTableSegment },
d09ea6ba
BC
1649 { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, NULL, 0, AnyType },
1650};
1651
39bb30f6 1652static int mxf_read_local_tags(MXFContext *mxf, KLVPacket *klv, MXFMetadataReadFunc *read_child, int ctx_size, enum MXFMetadataSetType type)
d09ea6ba 1653{
ae628ec1 1654 AVIOContext *pb = mxf->fc->pb;
d09ea6ba 1655 MXFMetadataSet *ctx = ctx_size ? av_mallocz(ctx_size) : mxf;
a2704c97 1656 uint64_t klv_end = avio_tell(pb) + klv->length;
d09ea6ba
BC
1657
1658 if (!ctx)
bcd5d979 1659 return AVERROR(ENOMEM);
0373ec63 1660 while (avio_tell(pb) + 4 < klv_end && !pb->eof_reached) {
bcd5d979 1661 int ret;
b7effd4e
AK
1662 int tag = avio_rb16(pb);
1663 int size = avio_rb16(pb); /* KLV specified by 0x53 */
a2704c97 1664 uint64_t next = avio_tell(pb) + size;
d09ea6ba
BC
1665 UID uid = {0};
1666
dfd2a005 1667 av_dlog(mxf->fc, "local tag %#04x size %d\n", tag, size);
d09ea6ba 1668 if (!size) { /* ignore empty tag, needed for some files with empty UMID tag */
8a47ad5e 1669 av_log(mxf->fc, AV_LOG_ERROR, "local tag %#04x with 0 size\n", tag);
d09ea6ba
BC
1670 continue;
1671 }
1672 if (tag > 0x7FFF) { /* dynamic tag */
1673 int i;
1674 for (i = 0; i < mxf->local_tags_count; i++) {
1675 int local_tag = AV_RB16(mxf->local_tags+i*18);
1676 if (local_tag == tag) {
1677 memcpy(uid, mxf->local_tags+i*18+2, 16);
dfd2a005 1678 av_dlog(mxf->fc, "local tag %#04x\n", local_tag);
d09ea6ba 1679 PRINT_KEY(mxf->fc, "uid", uid);
d09ea6ba
BC
1680 }
1681 }
1682 }
1683 if (ctx_size && tag == 0x3C0A)
b7effd4e 1684 avio_read(pb, ctx->uid, 16);
21cc4b33 1685 else if ((ret = read_child(ctx, pb, tag, size, uid, -1)) < 0)
bcd5d979 1686 return ret;
d09ea6ba 1687
11800c8c
TH
1688 /* Accept the 64k local set limit being exceeded (Avid). Don't accept
1689 * it extending past the end of the KLV though (zzuf5.mxf). */
1690 if (avio_tell(pb) > klv_end) {
cc1e3ace
TH
1691 if (ctx_size)
1692 av_free(ctx);
1693
11800c8c
TH
1694 av_log(mxf->fc, AV_LOG_ERROR,
1695 "local tag %#04x extends past end of local set @ %#"PRIx64"\n",
1696 tag, klv->offset);
1697 return AVERROR_INVALIDDATA;
1698 } else if (avio_tell(pb) <= next) /* only seek forward, else this can loop for a long time */
1699 avio_seek(pb, next, SEEK_SET);
d09ea6ba
BC
1700 }
1701 if (ctx_size) ctx->type = type;
1702 return ctx_size ? mxf_add_metadata_set(mxf, ctx) : 0;
1703}
1704
775d3b4a
TH
1705/**
1706 * Seeks to the previous partition, if possible
1707 * @return <= 0 if we should stop parsing, > 0 if we should keep going
1708 */
1709static int mxf_seek_to_previous_partition(MXFContext *mxf)
1710{
1711 AVIOContext *pb = mxf->fc->pb;
1712
1713 if (!mxf->current_partition ||
1714 mxf->run_in + mxf->current_partition->previous_partition <= mxf->last_forward_tell)
1715 return 0; /* we've parsed all partitions */
1716
1717 /* seek to previous partition */
1718 avio_seek(pb, mxf->run_in + mxf->current_partition->previous_partition, SEEK_SET);
1719 mxf->current_partition = NULL;
1720
1721 av_dlog(mxf->fc, "seeking to previous partition\n");
1722
1723 return 1;
1724}
1725
1726/**
1727 * Called when essence is encountered
1728 * @return <= 0 if we should stop parsing, > 0 if we should keep going
1729 */
1730static int mxf_parse_handle_essence(MXFContext *mxf)
1731{
1732 AVIOContext *pb = mxf->fc->pb;
1733 int64_t ret;
1734
775d3b4a
TH
1735 if (mxf->parsing_backward) {
1736 return mxf_seek_to_previous_partition(mxf);
1737 } else {
1738 if (!mxf->footer_partition) {
1739 av_dlog(mxf->fc, "no footer\n");
1740 return 0;
1741 }
1742
1743 av_dlog(mxf->fc, "seeking to footer\n");
1744
1745 /* remember where we were so we don't end up seeking further back than this */
1746 mxf->last_forward_tell = avio_tell(pb);
1747
1748 if (!pb->seekable) {
1749 av_log(mxf->fc, AV_LOG_INFO, "file is not seekable - not parsing footer\n");
1750 return -1;
1751 }
1752
1753 /* seek to footer partition and parse backward */
1754 if ((ret = avio_seek(pb, mxf->run_in + mxf->footer_partition, SEEK_SET)) < 0) {
1755 av_log(mxf->fc, AV_LOG_ERROR, "failed to seek to footer @ 0x%"PRIx64" (%"PRId64") - partial file?\n",
1756 mxf->run_in + mxf->footer_partition, ret);
1757 return ret;
1758 }
1759
1760 mxf->current_partition = NULL;
1761 mxf->parsing_backward = 1;
1762 }
1763
1764 return 1;
1765}
1766
1767/**
1768 * Called when the next partition or EOF is encountered
1769 * @return <= 0 if we should stop parsing, > 0 if we should keep going
1770 */
1771static int mxf_parse_handle_partition_or_eof(MXFContext *mxf)
1772{
1773 return mxf->parsing_backward ? mxf_seek_to_previous_partition(mxf) : 1;
1774}
1775
21cc4b33
TH
1776/**
1777 * Figure out the proper offset and length of the essence container
1778 * in each partition
1779 */
1780static void mxf_compute_essence_containers(MXFContext *mxf)
1781{
1782 int x;
1783
1784 /* everything is already correct */
1785 if (mxf->op == OPAtom)
1786 return;
1787
1788 for (x = 0; x < mxf->partitions_count; x++) {
1789 MXFPartition *p = &mxf->partitions[x];
1790
1791 if (!p->body_sid)
1792 continue; /* BodySID == 0 -> no essence */
1793
1794 if (x >= mxf->partitions_count - 1)
1795 break; /* last partition - can't compute length (and we don't need to) */
1796
1797 /* essence container spans to the next partition */
1798 p->essence_length = mxf->partitions[x+1].this_partition - p->essence_offset;
1799
1800 if (p->essence_length < 0) {
1801 /* next ThisPartition < essence_offset */
1802 p->essence_length = 0;
4fbd3e89
JF
1803 av_log(mxf->fc, AV_LOG_ERROR,
1804 "partition %i: bad ThisPartition = %"PRIX64"\n",
21cc4b33
TH
1805 x+1, mxf->partitions[x+1].this_partition);
1806 }
1807 }
1808}
1809
1810static int64_t round_to_kag(int64_t position, int kag_size)
1811{
1812 /* TODO: account for run-in? the spec isn't clear whether KAG should account for it */
1813 /* NOTE: kag_size may be any integer between 1 - 2^10 */
1814 int64_t ret = (position / kag_size) * kag_size;
1815 return ret == position ? ret : ret + kag_size;
1816}
1817
1818static inline void compute_partition_essence_offset(AVFormatContext *s,
1819 MXFContext *mxf,
1820 KLVPacket *klv)
1821{
1822 MXFPartition *cur_part = mxf->current_partition;
1823 /* for OP1a we compute essence_offset
1824 * for OPAtom we point essence_offset after the KL
1825 * (usually op1a_essence_offset + 20 or 25)
1826 * TODO: for OP1a we could eliminate this entire if statement, always
1827 * stopping parsing at op1a_essence_offset
1828 * for OPAtom we still need the actual essence_offset though
1829 * (the KL's length can vary)
1830 */
1831 int64_t op1a_essence_offset =
1832 round_to_kag(cur_part->this_partition + cur_part->pack_length,
1833 cur_part->kag_size) +
1834 round_to_kag(cur_part->header_byte_count, cur_part->kag_size) +
1835 round_to_kag(cur_part->index_byte_count, cur_part->kag_size);
1836
1837 if (mxf->op == OPAtom) {
1838 /* point essence_offset to the actual data
1839 * OPAtom has all the essence in one big KLV
1840 */
1841 cur_part->essence_offset = avio_tell(s->pb);
1842 cur_part->essence_length = klv->length;
1843 } else {
1844 /* NOTE: op1a_essence_offset may be less than to klv.offset
1845 * (C0023S01.mxf) */
1846 cur_part->essence_offset = op1a_essence_offset;
1847 }
1848}
1849
36ef5369 1850static int is_pcm(enum AVCodecID codec_id)
c65642d3
TH
1851{
1852 /* we only care about "normal" PCM codecs until we get samples */
36ef5369 1853 return codec_id >= AV_CODEC_ID_PCM_S16LE && codec_id < AV_CODEC_ID_PCM_S24DAUD;
c65642d3
TH
1854}
1855
1856/**
1857 * Deal with the case where for some audio atoms EditUnitByteCount is
1858 * very small (2, 4..). In those cases we should read more than one
1859 * sample per call to mxf_read_packet().
1860 */
1861static void mxf_handle_small_eubc(AVFormatContext *s)
1862{
1863 MXFContext *mxf = s->priv_data;
1864
1865 /* assuming non-OPAtom == frame wrapped
1866 * no sane writer would wrap 2 byte PCM packets with 20 byte headers.. */
1867 if (mxf->op != OPAtom)
1868 return;
1869
1870 /* expect PCM with exactly one index table segment and a small (< 32) EUBC */
1871 if (s->nb_streams != 1 ||
1872 s->streams[0]->codec->codec_type != AVMEDIA_TYPE_AUDIO ||
1873 !is_pcm(s->streams[0]->codec->codec_id) ||
1874 mxf->nb_index_tables != 1 ||
1875 mxf->index_tables[0].nb_segments != 1 ||
1876 mxf->index_tables[0].segments[0]->edit_unit_byte_count >= 32)
1877 return;
1878
1879 /* arbitrarily default to 48 kHz PAL audio frame size */
1880 /* TODO: We could compute this from the ratio between the audio
1881 * and video edit rates for 48 kHz NTSC we could use the
1882 * 1802-1802-1802-1802-1801 pattern. */
1883 mxf->edit_units_per_packet = 1920;
1884}
1885
6e9651d1 1886static int mxf_read_header(AVFormatContext *s)
d09ea6ba
BC
1887{
1888 MXFContext *mxf = s->priv_data;
1889 KLVPacket klv;
3cb33fbe 1890 int64_t essence_offset = 0;
f028d4d1 1891 int ret;
d09ea6ba 1892
775d3b4a 1893 mxf->last_forward_tell = INT64_MAX;
c65642d3 1894 mxf->edit_units_per_packet = 1;
775d3b4a 1895
d09ea6ba
BC
1896 if (!mxf_read_sync(s->pb, mxf_header_partition_pack_key, 14)) {
1897 av_log(s, AV_LOG_ERROR, "could not find header partition pack key\n");
bcd5d979 1898 return AVERROR_INVALIDDATA;
d09ea6ba 1899 }
6b4aa5da 1900 avio_seek(s->pb, -14, SEEK_CUR);
d09ea6ba 1901 mxf->fc = s;
775d3b4a
TH
1902 mxf->run_in = avio_tell(s->pb);
1903
66e5b1df 1904 while (!s->pb->eof_reached) {
d09ea6ba
BC
1905 const MXFMetadataReadTableEntry *metadata;
1906
775d3b4a
TH
1907 if (klv_read_packet(&klv, s->pb) < 0) {
1908 /* EOF - seek to previous partition or stop */
1909 if(mxf_parse_handle_partition_or_eof(mxf) <= 0)
1910 break;
1911 else
1912 continue;
1913 }
1914
d09ea6ba 1915 PRINT_KEY(s, "read header", klv.key);
b0a4e5f9 1916 av_dlog(s, "size %"PRIu64" offset %#"PRIx64"\n", klv.length, klv.offset);
d09ea6ba 1917 if (IS_KLV_KEY(klv.key, mxf_encrypted_triplet_key) ||
775d3b4a 1918 IS_KLV_KEY(klv.key, mxf_essence_element_key) ||
1f5f8b26 1919 IS_KLV_KEY(klv.key, mxf_avid_essence_element_key) ||
775d3b4a 1920 IS_KLV_KEY(klv.key, mxf_system_item_key)) {
687e2fde
TH
1921
1922 if (!mxf->current_partition) {
1923 av_log(mxf->fc, AV_LOG_ERROR,
1924 "found essence prior to first PartitionPack\n");
1925 return AVERROR_INVALIDDATA;
1926 }
1927
21cc4b33
TH
1928 if (!mxf->current_partition->essence_offset) {
1929 compute_partition_essence_offset(s, mxf, &klv);
1930 }
1931
3cb33fbe
TH
1932 if (!essence_offset)
1933 essence_offset = klv.offset;
775d3b4a
TH
1934
1935 /* seek to footer, previous partition or stop */
1936 if (mxf_parse_handle_essence(mxf) <= 0)
1937 break;
edb50856 1938 continue;
775d3b4a
TH
1939 } else if (!memcmp(klv.key, mxf_header_partition_pack_key, 13) &&
1940 klv.key[13] >= 2 && klv.key[13] <= 4 && mxf->current_partition) {
1941 /* next partition pack - keep going, seek to previous partition or stop */
1942 if(mxf_parse_handle_partition_or_eof(mxf) <= 0)
1943 break;
83728d2d
TH
1944 else if (mxf->parsing_backward)
1945 continue;
1946 /* we're still parsing forward. proceed to parsing this partition pack */
edb50856 1947 }
d09ea6ba
BC
1948
1949 for (metadata = mxf_metadata_read_table; metadata->read; metadata++) {
1950 if (IS_KLV_KEY(klv.key, metadata->key)) {
39bb30f6
RD
1951 int res;
1952 if (klv.key[5] == 0x53) {
1953 res = mxf_read_local_tags(mxf, &klv, metadata->read, metadata->ctx_size, metadata->type);
0662eea6
PN
1954 } else {
1955 uint64_t next = avio_tell(s->pb) + klv.length;
21cc4b33 1956 res = metadata->read(mxf, s->pb, 0, klv.length, klv.key, klv.offset);
11800c8c
TH
1957
1958 /* only seek forward, else this can loop for a long time */
1959 if (avio_tell(s->pb) > next) {
1960 av_log(s, AV_LOG_ERROR, "read past end of KLV @ %#"PRIx64"\n",
1961 klv.offset);
1962 return AVERROR_INVALIDDATA;
1963 }
1964
0662eea6
PN
1965 avio_seek(s->pb, next, SEEK_SET);
1966 }
39bb30f6 1967 if (res < 0) {
d09ea6ba 1968 av_log(s, AV_LOG_ERROR, "error reading header metadata\n");
bcd5d979 1969 return res;
d09ea6ba
BC
1970 }
1971 break;
1972 }
1973 }
1974 if (!metadata->read)
45a8a02a 1975 avio_skip(s->pb, klv.length);
d09ea6ba 1976 }
775d3b4a 1977 /* FIXME avoid seek */
3cb33fbe 1978 if (!essence_offset) {
775d3b4a
TH
1979 av_log(s, AV_LOG_ERROR, "no essence\n");
1980 return AVERROR_INVALIDDATA;
1981 }
3cb33fbe 1982 avio_seek(s->pb, essence_offset, SEEK_SET);
21cc4b33
TH
1983
1984 mxf_compute_essence_containers(mxf);
1985
f028d4d1
JG
1986 /* we need to do this before computing the index tables
1987 * to be able to fill in zero IndexDurations with st->duration */
1988 if ((ret = mxf_parse_structural_metadata(mxf)) < 0)
1989 return ret;
1990
1991 if ((ret = mxf_compute_index_tables(mxf)) < 0)
1992 return ret;
1993
1994 if (mxf->nb_index_tables > 1) {
1995 /* TODO: look up which IndexSID to use via EssenceContainerData */
1996 av_log(mxf->fc, AV_LOG_INFO, "got %i index tables - only the first one (IndexSID %i) will be used\n",
1997 mxf->nb_index_tables, mxf->index_tables[0].index_sid);
1998 } else if (mxf->nb_index_tables == 0 && mxf->op == OPAtom) {
1999 av_log(mxf->fc, AV_LOG_ERROR, "cannot demux OPAtom without an index\n");
2000 return AVERROR_INVALIDDATA;
2001 }
2002
c65642d3
TH
2003 mxf_handle_small_eubc(s);
2004
f028d4d1 2005 return 0;
d09ea6ba
BC
2006}
2007
f028d4d1 2008/**
1fadf53e
TH
2009 * Sets mxf->current_edit_unit based on what offset we're currently at.
2010 * @return next_ofs if OK, <0 on error
f028d4d1 2011 */
1fadf53e 2012static int64_t mxf_set_current_edit_unit(MXFContext *mxf, int64_t current_offset)
f028d4d1 2013{
1fadf53e 2014 int64_t last_ofs = -1, next_ofs = -1;
f028d4d1
JG
2015 MXFIndexTable *t = &mxf->index_tables[0];
2016
29fc8f50
TH
2017 /* this is called from the OP1a demuxing logic, which means there
2018 * may be no index tables */
2019 if (mxf->nb_index_tables <= 0)
1fadf53e 2020 return -1;
29fc8f50 2021
1fadf53e
TH
2022 /* find mxf->current_edit_unit so that the next edit unit starts ahead
2023 * of current_offset */
9123950b 2024 while (mxf->current_edit_unit >= 0) {
1fadf53e
TH
2025 if (mxf_edit_unit_absolute_offset(mxf, t, mxf->current_edit_unit + 1,
2026 NULL, &next_ofs, 0) < 0)
2027 return -1;
f028d4d1 2028
e352c96c
TH
2029 if (next_ofs <= last_ofs) {
2030 /* large next_ofs didn't change or current_edit_unit wrapped
2031 * around this fixes the infinite loop on zzuf3.mxf */
2032 av_log(mxf->fc, AV_LOG_ERROR,
2033 "next_ofs didn't change. not deriving packet timestamps\n");
1fadf53e 2034 return -1;
e352c96c
TH
2035 }
2036
1fadf53e 2037 if (next_ofs > current_offset)
f028d4d1
JG
2038 break;
2039
e352c96c 2040 last_ofs = next_ofs;
f028d4d1
JG
2041 mxf->current_edit_unit++;
2042 }
2043
1fadf53e
TH
2044 /* not checking mxf->current_edit_unit >= t->nb_ptses here since CBR files
2045 * may lack IndexEntryArrays */
2046 if (mxf->current_edit_unit < 0)
2047 return -1;
f028d4d1 2048
1fadf53e 2049 return next_ofs;
f028d4d1
JG
2050}
2051
5b930092
MB
2052static int mxf_compute_sample_count(MXFContext *mxf, int stream_index,
2053 uint64_t *sample_count)
2054{
2055 int i, total = 0, size = 0;
2056 AVStream *st = mxf->fc->streams[stream_index];
2057 MXFTrack *track = st->priv_data;
2058 AVRational time_base = av_inv_q(track->edit_rate);
2059 AVRational sample_rate = av_inv_q(st->time_base);
2060 const MXFSamplesPerFrame *spf = NULL;
2061
2062 if ((sample_rate.num / sample_rate.den) == 48000)
2063 spf = ff_mxf_get_samples_per_frame(mxf->fc, time_base);
2064 if (!spf) {
2065 int remainder = (sample_rate.num * time_base.num) %
2066 (time_base.den * sample_rate.den);
2067 *sample_count = av_q2d(av_mul_q((AVRational){mxf->current_edit_unit, 1},
2068 av_mul_q(sample_rate, time_base)));
2069 if (remainder)
2070 av_log(mxf->fc, AV_LOG_WARNING,
2071 "seeking detected on stream #%d with time base (%d/%d) and "
2072 "sample rate (%d/%d), audio pts won't be accurate.\n",
2073 stream_index, time_base.num, time_base.den,
2074 sample_rate.num, sample_rate.den);
2075 return 0;
2076 }
2077
2078 while (spf->samples_per_frame[size]) {
2079 total += spf->samples_per_frame[size];
2080 size++;
2081 }
2082
2083 if (!size)
2084 return 0;
2085
2086 *sample_count = (mxf->current_edit_unit / size) * (uint64_t)total;
2087 for (i = 0; i < mxf->current_edit_unit % size; i++) {
2088 *sample_count += spf->samples_per_frame[i];
2089 }
2090
2091 return 0;
2092}
2093
2094static int mxf_set_audio_pts(MXFContext *mxf, AVCodecContext *codec,
2095 AVPacket *pkt)
2096{
2097 MXFTrack *track = mxf->fc->streams[pkt->stream_index]->priv_data;
2098 int64_t bits_per_sample = av_get_bits_per_sample(codec->codec_id);
2099
2100 pkt->pts = track->sample_count;
2101
2102 if (codec->channels <= 0 || codec->channels * bits_per_sample < 8)
2103 return AVERROR_INVALIDDATA;
2104
2105 track->sample_count += pkt->size / (codec->channels * bits_per_sample / 8);
2106 return 0;
2107}
2108
f028d4d1
JG
2109static int mxf_read_packet_old(AVFormatContext *s, AVPacket *pkt)
2110{
2111 KLVPacket klv;
1fadf53e 2112 MXFContext *mxf = s->priv_data;
f028d4d1
JG
2113
2114 while (!s->pb->eof_reached) {
2115 if (klv_read_packet(&klv, s->pb) < 0)
2116 return -1;
2117 PRINT_KEY(s, "read packet", klv.key);
2118 av_dlog(s, "size %"PRIu64" offset %#"PRIx64"\n", klv.length, klv.offset);
2119 if (IS_KLV_KEY(klv.key, mxf_encrypted_triplet_key)) {
2120 int res = mxf_decrypt_triplet(s, pkt, &klv);
2121 if (res < 0) {
2122 av_log(s, AV_LOG_ERROR, "invalid encoded triplet\n");
2123 return -1;
2124 }
2125 return 0;
2126 }
2127 if (IS_KLV_KEY(klv.key, mxf_essence_element_key) ||
2128 IS_KLV_KEY(klv.key, mxf_avid_essence_element_key)) {
2129 int index = mxf_get_stream_index(s, &klv);
1fadf53e 2130 int64_t next_ofs, next_klv;
34ca5ae5
TH
2131 AVStream *st;
2132 MXFTrack *track;
5b930092 2133 AVCodecContext *codec;
1fadf53e 2134
f028d4d1
JG
2135 if (index < 0) {
2136 av_log(s, AV_LOG_ERROR, "error getting stream index %d\n", AV_RB32(klv.key+12));
2137 goto skip;
2138 }
34ca5ae5
TH
2139
2140 st = s->streams[index];
2141 track = st->priv_data;
2142
f028d4d1
JG
2143 if (s->streams[index]->discard == AVDISCARD_ALL)
2144 goto skip;
1fadf53e
TH
2145
2146 next_klv = avio_tell(s->pb) + klv.length;
2147 next_ofs = mxf_set_current_edit_unit(mxf, klv.offset);
2148
2149 if (next_ofs >= 0 && next_klv > next_ofs) {
2150 /* if this check is hit then it's possible OPAtom was treated
2151 * as OP1a truncate the packet since it's probably very large
2152 * (>2 GiB is common) */
1ecdf891
DB
2153 avpriv_request_sample(s,
2154 "OPAtom misinterpreted as OP1a?"
2155 "KLV for edit unit %i extending into "
2156 "next edit unit",
1fadf53e
TH
2157 mxf->current_edit_unit);
2158 klv.length = next_ofs - avio_tell(s->pb);
2159 }
2160
f028d4d1
JG
2161 /* check for 8 channels AES3 element */
2162 if (klv.key[12] == 0x06 && klv.key[13] == 0x01 && klv.key[14] == 0x10) {
2163 if (mxf_get_d10_aes3_packet(s->pb, s->streams[index], pkt, klv.length) < 0) {
2164 av_log(s, AV_LOG_ERROR, "error reading D-10 aes3 frame\n");
2165 return -1;
2166 }
2167 } else {
2168 int ret = av_get_packet(s->pb, pkt, klv.length);
2169 if (ret < 0)
2170 return ret;
2171 }
2172 pkt->stream_index = index;
2173 pkt->pos = klv.offset;
2174
5b930092
MB
2175 codec = s->streams[index]->codec;
2176
2177 if (codec->codec_type == AVMEDIA_TYPE_VIDEO && next_ofs >= 0) {
1fadf53e
TH
2178 /* mxf->current_edit_unit good - see if we have an
2179 * index table to derive timestamps from */
2180 MXFIndexTable *t = &mxf->index_tables[0];
2181
2182 if (mxf->nb_index_tables >= 1 &&
2183 mxf->current_edit_unit < t->nb_ptses) {
2184 pkt->dts = mxf->current_edit_unit + t->first_dts;
2185 pkt->pts = t->ptses[mxf->current_edit_unit];
34ca5ae5
TH
2186 } else if (track->intra_only) {
2187 /* intra-only -> PTS = EditUnit.
2188 * let utils.c figure out DTS since it can be
2189 * < PTS if low_delay = 0 (Sony IMX30) */
2190 pkt->pts = mxf->current_edit_unit;
1fadf53e 2191 }
5b930092
MB
2192 } else if (codec->codec_type == AVMEDIA_TYPE_AUDIO) {
2193 int ret = mxf_set_audio_pts(mxf, codec, pkt);
2194 if (ret < 0)
2195 return ret;
1fadf53e
TH
2196 }
2197
2198 /* seek for truncated packets */
2199 avio_seek(s->pb, next_klv, SEEK_SET);
f028d4d1
JG
2200
2201 return 0;
2202 } else
2203 skip:
2204 avio_skip(s->pb, klv.length);
2205 }
2206 return AVERROR_EOF;
2207}
2208
2209static int mxf_read_packet(AVFormatContext *s, AVPacket *pkt)
2210{
2211 MXFContext *mxf = s->priv_data;
2212 int ret, size;
2213 int64_t ret64, pos, next_pos;
2214 AVStream *st;
2215 MXFIndexTable *t;
c65642d3 2216 int edit_units;
f028d4d1
JG
2217
2218 if (mxf->op != OPAtom)
2219 return mxf_read_packet_old(s, pkt);
2220
2221 /* OPAtom - clip wrapped demuxing */
29fc8f50 2222 /* NOTE: mxf_read_header() makes sure nb_index_tables > 0 for OPAtom */
f028d4d1
JG
2223 st = s->streams[0];
2224 t = &mxf->index_tables[0];
2225
2226 if (mxf->current_edit_unit >= st->duration)
2227 return AVERROR_EOF;
2228
c65642d3
TH
2229 edit_units = FFMIN(mxf->edit_units_per_packet, st->duration - mxf->current_edit_unit);
2230
f028d4d1
JG
2231 if ((ret = mxf_edit_unit_absolute_offset(mxf, t, mxf->current_edit_unit, NULL, &pos, 1)) < 0)
2232 return ret;
2233
2234 /* compute size by finding the next edit unit or the end of the essence container
2235 * not pretty, but it works */
c65642d3 2236 if ((ret = mxf_edit_unit_absolute_offset(mxf, t, mxf->current_edit_unit + edit_units, NULL, &next_pos, 0)) < 0 &&
f028d4d1
JG
2237 (next_pos = mxf_essence_container_end(mxf, t->body_sid)) <= 0) {
2238 av_log(s, AV_LOG_ERROR, "unable to compute the size of the last packet\n");
2239 return AVERROR_INVALIDDATA;
2240 }
2241
2242 if ((size = next_pos - pos) <= 0) {
2243 av_log(s, AV_LOG_ERROR, "bad size: %i\n", size);
2244 return AVERROR_INVALIDDATA;
2245 }
2246
2247 if ((ret64 = avio_seek(s->pb, pos, SEEK_SET)) < 0)
2248 return ret64;
2249
2250 if ((ret = av_get_packet(s->pb, pkt, size)) != size)
2251 return ret < 0 ? ret : AVERROR_EOF;
2252
5b930092
MB
2253 pkt->stream_index = 0;
2254
f028d4d1
JG
2255 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && t->ptses &&
2256 mxf->current_edit_unit >= 0 && mxf->current_edit_unit < t->nb_ptses) {
2257 pkt->dts = mxf->current_edit_unit + t->first_dts;
2258 pkt->pts = t->ptses[mxf->current_edit_unit];
5b930092
MB
2259 } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
2260 int ret = mxf_set_audio_pts(mxf, st->codec, pkt);
2261 if (ret < 0)
2262 return ret;
f028d4d1
JG
2263 }
2264
c65642d3 2265 mxf->current_edit_unit += edit_units;
f028d4d1
JG
2266
2267 return 0;
2268}
2269
2270
d09ea6ba
BC
2271static int mxf_read_close(AVFormatContext *s)
2272{
2273 MXFContext *mxf = s->priv_data;
682b6db7 2274 MXFIndexTableSegment *seg;
fc857294 2275 int i;
d09ea6ba
BC
2276
2277 av_freep(&mxf->packages_refs);
8be080ae
BC
2278
2279 for (i = 0; i < s->nb_streams; i++)
2280 s->streams[i]->priv_data = NULL;
2281
d09ea6ba
BC
2282 for (i = 0; i < mxf->metadata_sets_count; i++) {
2283 switch (mxf->metadata_sets[i]->type) {
b37effdc
JG
2284 case Descriptor:
2285 av_freep(&((MXFDescriptor *)mxf->metadata_sets[i])->extradata);
2286 break;
d09ea6ba
BC
2287 case MultipleDescriptor:
2288 av_freep(&((MXFDescriptor *)mxf->metadata_sets[i])->sub_descriptors_refs);
2289 break;
2290 case Sequence:
2291 av_freep(&((MXFSequence *)mxf->metadata_sets[i])->structural_components_refs);
2292 break;
2293 case SourcePackage:
2294 case MaterialPackage:
2295 av_freep(&((MXFPackage *)mxf->metadata_sets[i])->tracks_refs);
2296 break;
682b6db7
JG
2297 case IndexTableSegment:
2298 seg = (MXFIndexTableSegment *)mxf->metadata_sets[i];
21cc4b33 2299 av_freep(&seg->temporal_offset_entries);
682b6db7
JG
2300 av_freep(&seg->flag_entries);
2301 av_freep(&seg->stream_offset_entries);
682b6db7 2302 break;
d09ea6ba
BC
2303 default:
2304 break;
2305 }
2306 av_freep(&mxf->metadata_sets[i]);
2307 }
d32b3f40 2308 av_freep(&mxf->partitions);
d09ea6ba
BC
2309 av_freep(&mxf->metadata_sets);
2310 av_freep(&mxf->aesc);
2311 av_freep(&mxf->local_tags);
f028d4d1
JG
2312
2313 for (i = 0; i < mxf->nb_index_tables; i++) {
2314 av_freep(&mxf->index_tables[i].segments);
50a3f9a4 2315 av_freep(&mxf->index_tables[i].ptses);
f028d4d1
JG
2316 av_freep(&mxf->index_tables[i].fake_index);
2317 }
2318 av_freep(&mxf->index_tables);
2319
d09ea6ba
BC
2320 return 0;
2321}
2322
2323static int mxf_probe(AVProbeData *p) {
2324 uint8_t *bufp = p->buf;
2325 uint8_t *end = p->buf + p->buf_size;
2326
2327 if (p->buf_size < sizeof(mxf_header_partition_pack_key))
2328 return 0;
2329
2330 /* Must skip Run-In Sequence and search for MXF header partition pack key SMPTE 377M 5.5 */
2331 end -= sizeof(mxf_header_partition_pack_key);
2332 for (; bufp < end; bufp++) {
2333 if (IS_KLV_KEY(bufp, mxf_header_partition_pack_key))
2334 return AVPROBE_SCORE_MAX;
2335 }
2336 return 0;
2337}
2338
2339/* rudimentary byte seek */
2340/* XXX: use MXF Index */
2341static int mxf_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
2342{
2343 AVStream *st = s->streams[stream_index];
2344 int64_t seconds;
f028d4d1
JG
2345 MXFContext* mxf = s->priv_data;
2346 int64_t seekpos;
5b930092 2347 int i, ret;
f028d4d1 2348 MXFIndexTable *t;
5b930092
MB
2349 MXFTrack *source_track = st->priv_data;
2350
2351 /* if audio then truncate sample_time to EditRate */
2352 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
2353 sample_time = av_rescale_q(sample_time, st->time_base,
2354 av_inv_q(source_track->edit_rate));
d09ea6ba 2355
c84cce5a 2356 if (mxf->nb_index_tables <= 0) {
d09ea6ba 2357 if (!s->bit_rate)
bcd5d979 2358 return AVERROR_INVALIDDATA;
d09ea6ba
BC
2359 if (sample_time < 0)
2360 sample_time = 0;
2361 seconds = av_rescale(sample_time, st->time_base.num, st->time_base.den);
3359246d 2362
42f91322
LB
2363 seekpos = avio_seek(s->pb, (s->bit_rate * seconds) >> 3, SEEK_SET);
2364 if (seekpos < 0)
2365 return seekpos;
2366
a2faa951 2367 ff_update_cur_dts(s, st, sample_time);
951d8190 2368 mxf->current_edit_unit = sample_time;
f028d4d1
JG
2369 } else {
2370 t = &mxf->index_tables[0];
2371
2372 /* clamp above zero, else ff_index_search_timestamp() returns negative
2373 * this also means we allow seeking before the start */
2374 sample_time = FFMAX(sample_time, 0);
2375
2376 if (t->fake_index) {
2377 /* behave as if we have a proper index */
2378 if ((sample_time = ff_index_search_timestamp(t->fake_index, t->nb_ptses, sample_time, flags)) < 0)
2379 return sample_time;
2380 } else {
2381 /* no IndexEntryArray (one or more CBR segments)
2382 * make sure we don't seek past the end */
5b930092 2383 sample_time = FFMIN(sample_time, source_track->original_duration - 1);
f028d4d1
JG
2384 }
2385
2386 if ((ret = mxf_edit_unit_absolute_offset(mxf, t, sample_time, &sample_time, &seekpos, 1)) << 0)
2387 return ret;
2388
2389 ff_update_cur_dts(s, st, sample_time);
2390 mxf->current_edit_unit = sample_time;
2391 avio_seek(s->pb, seekpos, SEEK_SET);
2392 }
5b930092
MB
2393
2394 // Update all tracks sample count
2395 for (i = 0; i < s->nb_streams; i++) {
2396 AVStream *cur_st = s->streams[i];
2397 MXFTrack *cur_track = cur_st->priv_data;
2398 uint64_t current_sample_count = 0;
2399 if (cur_st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
2400 ret = mxf_compute_sample_count(mxf, i, &current_sample_count);
2401 if (ret < 0)
2402 return ret;
2403
2404 cur_track->sample_count = current_sample_count;
2405 }
2406 }
d09ea6ba
BC
2407 return 0;
2408}
2409
c6610a21 2410AVInputFormat ff_mxf_demuxer = {
dfc2c4d9 2411 .name = "mxf",
0177b7d2 2412 .long_name = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format)"),
dfc2c4d9
AK
2413 .priv_data_size = sizeof(MXFContext),
2414 .read_probe = mxf_probe,
2415 .read_header = mxf_read_header,
2416 .read_packet = mxf_read_packet,
2417 .read_close = mxf_read_close,
2418 .read_seek = mxf_read_seek,
d09ea6ba 2419};