FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavformat/asfenc.c
Date: 2026-04-24 19:58:39
Exec Total Coverage
Lines: 389 556 70.0%
Functions: 15 19 78.9%
Branches: 134 242 55.4%
Line Branch Exec Source
1 /*
2 * ASF muxer
3 * Copyright (c) 2000, 2001 Fabrice Bellard
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 #include "config_components.h"
23
24 #include "libavutil/avassert.h"
25 #include "libavutil/dict.h"
26 #include "libavutil/mathematics.h"
27 #include "libavutil/mem.h"
28 #include "libavutil/opt.h"
29 #include "libavcodec/codec_desc.h"
30 #include "avformat.h"
31 #include "avlanguage.h"
32 #include "avio_internal.h"
33 #include "internal.h"
34 #include "mux.h"
35 #include "riff.h"
36 #include "asf.h"
37
38 #define ASF_INDEXED_INTERVAL 10000000
39 #define ASF_INDEX_BLOCK (1<<9)
40 #define ASF_PAYLOADS_PER_PACKET 63
41
42 #define ASF_PACKET_ERROR_CORRECTION_DATA_SIZE 0x2
43 #define ASF_PACKET_ERROR_CORRECTION_FLAGS \
44 (ASF_PACKET_FLAG_ERROR_CORRECTION_PRESENT | \
45 ASF_PACKET_ERROR_CORRECTION_DATA_SIZE)
46
47 #if (ASF_PACKET_ERROR_CORRECTION_FLAGS != 0)
48 # define ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE 1
49 #else
50 # define ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE 0
51 #endif
52
53 #define ASF_PPI_PROPERTY_FLAGS \
54 (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE | \
55 ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_DWORD | \
56 ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE | \
57 ASF_PL_FLAG_STREAM_NUMBER_LENGTH_FIELD_IS_BYTE)
58
59 #define ASF_PPI_LENGTH_TYPE_FLAGS 0
60
61 #define ASF_PAYLOAD_FLAGS ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD
62
63 #if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
64 # define ASF_PPI_SEQUENCE_FIELD_SIZE 1
65 #endif
66 #if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
67 # define ASF_PPI_SEQUENCE_FIELD_SIZE 2
68 #endif
69 #if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
70 # define ASF_PPI_SEQUENCE_FIELD_SIZE 4
71 #endif
72 #ifndef ASF_PPI_SEQUENCE_FIELD_SIZE
73 # define ASF_PPI_SEQUENCE_FIELD_SIZE 0
74 #endif
75
76 #if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE))
77 # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 1
78 #endif
79 #if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE))
80 # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 2
81 #endif
82 #if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE))
83 # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 4
84 #endif
85 #ifndef ASF_PPI_PACKET_LENGTH_FIELD_SIZE
86 # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 0
87 #endif
88
89 #if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE))
90 # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 1
91 #endif
92 #if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE))
93 # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 2
94 #endif
95 #if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE))
96 # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 4
97 #endif
98 #ifndef ASF_PPI_PADDING_LENGTH_FIELD_SIZE
99 # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 0
100 #endif
101
102 #if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE))
103 # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 1
104 #endif
105 #if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_WORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE))
106 # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 2
107 #endif
108 #if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_DWORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE))
109 # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 4
110 #endif
111 #ifndef ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE
112 # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 0
113 #endif
114
115 #if (ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_BYTE == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_SIZE))
116 # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 1
117 #endif
118 #if (ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_WORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_SIZE))
119 # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 2
120 #endif
121 #if (ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_DWORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_SIZE))
122 # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 4
123 #endif
124 #ifndef ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE
125 # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 0
126 #endif
127
128 #if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE))
129 # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 1
130 #endif
131 #if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_WORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE))
132 # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 2
133 #endif
134 #if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_DWORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE))
135 # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 4
136 #endif
137 #ifndef ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE
138 # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 0
139 #endif
140
141 #if (ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_BYTE == (ASF_PAYLOAD_FLAGS & ASF_PL_MASK_PAYLOAD_LENGTH_FIELD_SIZE))
142 # define ASF_PAYLOAD_LENGTH_FIELD_SIZE 1
143 #endif
144 #if (ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD == (ASF_PAYLOAD_FLAGS & ASF_PL_MASK_PAYLOAD_LENGTH_FIELD_SIZE))
145 # define ASF_PAYLOAD_LENGTH_FIELD_SIZE 2
146 #endif
147 #ifndef ASF_PAYLOAD_LENGTH_FIELD_SIZE
148 # define ASF_PAYLOAD_LENGTH_FIELD_SIZE 0
149 #endif
150
151 #define PACKET_HEADER_MIN_SIZE \
152 (ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE + \
153 ASF_PACKET_ERROR_CORRECTION_DATA_SIZE + \
154 1 + /* Length Type Flags */ \
155 1 + /* Property Flags */ \
156 ASF_PPI_PACKET_LENGTH_FIELD_SIZE + \
157 ASF_PPI_SEQUENCE_FIELD_SIZE + \
158 ASF_PPI_PADDING_LENGTH_FIELD_SIZE + \
159 4 + /* Send Time Field */ \
160 2) /* Duration Field */
161
162 // Replicated Data shall be at least 8 bytes long.
163 #define ASF_PAYLOAD_REPLICATED_DATA_LENGTH 0x08
164
165 #define PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD \
166 (1 + /* Stream Number */ \
167 ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE + \
168 ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE + \
169 ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE + \
170 ASF_PAYLOAD_REPLICATED_DATA_LENGTH)
171
172 #define PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS \
173 (1 + /* Stream Number */ \
174 ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE + \
175 ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE + \
176 ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE + \
177 ASF_PAYLOAD_REPLICATED_DATA_LENGTH + \
178 ASF_PAYLOAD_LENGTH_FIELD_SIZE)
179
180 #define SINGLE_PAYLOAD_HEADERS \
181 (PACKET_HEADER_MIN_SIZE + \
182 PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD)
183
184 #define MULTI_PAYLOAD_HEADERS \
185 (PACKET_HEADER_MIN_SIZE + \
186 1 + /* Payload Flags */ \
187 2 * PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS)
188
189 #define DATA_HEADER_SIZE 50
190
191 #define PACKET_SIZE_MAX 65536
192 #define PACKET_SIZE_MIN 100
193
194 typedef struct ASFStream {
195 int num;
196 unsigned char seq;
197
198 uint16_t stream_language_index;
199 } ASFStream;
200
201 typedef struct ASFContext {
202 AVClass *av_class;
203 uint32_t seqno;
204 int is_streamed;
205 ASFStream streams[128]; ///< it's max number and it's not that big
206 const char *languages[128];
207 int nb_languages;
208 int64_t creation_time;
209 /* non-streamed additional info */
210 uint64_t nb_packets; ///< how many packets are there in the file, invalid if broadcasting
211 int64_t duration; ///< in 100ns units
212 /* packet filling */
213 unsigned char multi_payloads_present;
214 int packet_size_left;
215 int64_t packet_timestamp_start;
216 int64_t packet_timestamp_end;
217 unsigned int packet_nb_payloads;
218 uint8_t packet_buf[PACKET_SIZE_MAX];
219 FFIOContext pb;
220 /* only for reading */
221 uint64_t data_offset; ///< beginning of the first data packet
222
223 ASFIndex *index_ptr;
224 uint32_t nb_index_memory_alloc;
225 uint16_t maximum_packet;
226 uint32_t next_packet_number;
227 uint16_t next_packet_count;
228 uint64_t next_packet_offset;
229 int next_start_sec;
230 int end_sec;
231 int packet_size;
232 } ASFContext;
233
234 static const AVCodecTag codec_asf_bmp_tags[] = {
235 { AV_CODEC_ID_MPEG4, MKTAG('M', '4', 'S', '2') },
236 { AV_CODEC_ID_MPEG4, MKTAG('M', 'P', '4', 'S') },
237 { AV_CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', '4', '3') },
238 { AV_CODEC_ID_NONE, 0 },
239 };
240
241 static const AVCodecTag *const asf_codec_tags[] = {
242 codec_asf_bmp_tags, ff_codec_bmp_tags, ff_codec_wav_tags, NULL
243 };
244
245 #define PREROLL_TIME 3100
246
247 12 static void put_str16(AVIOContext *s, AVIOContext *dyn_buf, const char *tag)
248 {
249 uint8_t *buf;
250 int len;
251
252 12 avio_put_str16le(dyn_buf, tag);
253 12 len = avio_get_dyn_buf(dyn_buf, &buf);
254 12 avio_wl16(s, len);
255 12 avio_write(s, buf, len);
256 12 ffio_reset_dyn_buf(dyn_buf);
257 12 }
258
259 34 static int64_t put_header(AVIOContext *pb, const ff_asf_guid *g)
260 {
261 int64_t pos;
262
263 34 pos = avio_tell(pb);
264 34 ff_put_guid(pb, g);
265 34 avio_wl64(pb, 24);
266 34 return pos;
267 }
268
269 /* update header size */
270 34 static void end_header(AVIOContext *pb, int64_t pos)
271 {
272 int64_t pos1;
273
274 34 pos1 = avio_tell(pb);
275 34 avio_seek(pb, pos + 16, SEEK_SET);
276 34 avio_wl64(pb, pos1 - pos);
277 34 avio_seek(pb, pos1, SEEK_SET);
278 34 }
279
280 /* write an asf chunk (only used in streaming case) */
281 ✗ static void put_chunk(AVFormatContext *s, int type,
282 int payload_length, int flags)
283 {
284 ✗ ASFContext *asf = s->priv_data;
285 ✗ AVIOContext *pb = s->pb;
286 int length;
287
288 ✗ length = payload_length + 8;
289 ✗ avio_wl16(pb, type);
290 ✗ avio_wl16(pb, length); // size
291 ✗ avio_wl32(pb, asf->seqno); // sequence number
292 ✗ avio_wl16(pb, flags); // unknown bytes
293 ✗ avio_wl16(pb, length); // size_confirm
294 ✗ asf->seqno++;
295 ✗ }
296
297 /* convert from av time to windows time */
298 6 static int64_t unix_to_file_time(int64_t ti)
299 {
300 int64_t t;
301
302 6 t = ti * INT64_C(10);
303 6 t += INT64_C(116444736000000000);
304 6 return t;
305 }
306
307 ✗ static int32_t get_send_time(ASFContext *asf, int64_t pres_time, uint64_t *offset)
308 {
309 ✗ int32_t send_time = 0;
310 ✗ *offset = asf->data_offset + DATA_HEADER_SIZE;
311 ✗ for (int i = 0; i < asf->next_start_sec; i++) {
312 ✗ if (pres_time <= asf->index_ptr[i].send_time)
313 ✗ break;
314 ✗ send_time = asf->index_ptr[i].send_time;
315 ✗ *offset = asf->index_ptr[i].offset;
316 }
317
318 ✗ return send_time / 10000;
319 }
320
321 ✗ static void asf_write_markers(AVFormatContext *s, AVIOContext *dyn_buf)
322 {
323 ✗ ASFContext *asf = s->priv_data;
324 ✗ AVIOContext *pb = s->pb;
325 ✗ AVRational scale = {1, 10000000};
326 ✗ int64_t hpos = put_header(pb, &ff_asf_marker_header);
327
328 ✗ ff_put_guid(pb, &ff_asf_reserved_4);// ASF spec mandates this reserved value
329 ✗ avio_wl32(pb, s->nb_chapters); // markers count
330 ✗ avio_wl16(pb, 0); // ASF spec mandates 0 for this
331 ✗ avio_wl16(pb, 0); // name length 0, no name given
332
333 ✗ for (unsigned i = 0; i < s->nb_chapters; i++) {
334 ✗ AVChapter *c = s->chapters[i];
335 ✗ AVDictionaryEntry *t = av_dict_get(c->metadata, "title", NULL, 0);
336 ✗ int64_t pres_time = av_rescale_q(c->start, c->time_base, scale);
337 uint64_t offset;
338 ✗ int32_t send_time = get_send_time(asf, pres_time, &offset);
339 ✗ int len = 0;
340 uint8_t *buf;
341 ✗ if (t) {
342 ✗ avio_put_str16le(dyn_buf, t->value);
343 ✗ len = avio_get_dyn_buf(dyn_buf, &buf);
344 }
345 ✗ avio_wl64(pb, offset); // offset of the packet with send_time
346 ✗ avio_wl64(pb, pres_time + PREROLL_TIME * 10000); // presentation time
347 ✗ avio_wl16(pb, 12 + len); // entry length
348 ✗ avio_wl32(pb, send_time); // send time
349 ✗ avio_wl32(pb, 0); // flags, should be 0
350 ✗ avio_wl32(pb, len / 2); // marker desc length in WCHARS!
351 ✗ if (t) {
352 ✗ avio_write(pb, buf, len); // marker desc
353 ✗ ffio_reset_dyn_buf(dyn_buf);
354 }
355 }
356 ✗ end_header(pb, hpos);
357 ✗ }
358
359 /* write the header (used two times if non streamed) */
360 6 static int asf_write_header1(AVFormatContext *s, int64_t file_size,
361 int64_t data_chunk_size)
362 {
363 6 ASFContext *asf = s->priv_data;
364 6 AVIOContext *pb = s->pb, *dyn_buf;
365 AVDictionaryEntry *tags[5];
366 int header_size, extra_size, extra_size2, wav_extra_size;
367 6 int has_title, has_aspect_ratio = 0;
368 int metadata_count;
369 int64_t header_offset, cur_pos, hpos;
370 int bit_rate, ret;
371 int64_t duration;
372 6 int audio_language_counts[128] = { 0 };
373
374 6 ff_metadata_conv(&s->metadata, ff_asf_metadata_conv, NULL);
375
376 6 tags[0] = av_dict_get(s->metadata, "title", NULL, 0);
377 6 tags[1] = av_dict_get(s->metadata, "author", NULL, 0);
378 6 tags[2] = av_dict_get(s->metadata, "copyright", NULL, 0);
379 6 tags[3] = av_dict_get(s->metadata, "comment", NULL, 0);
380 6 tags[4] = av_dict_get(s->metadata, "rating", NULL, 0);
381
382 6 duration = asf->duration + PREROLL_TIME * 10000;
383
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 6 has_title = tags[0] || tags[1] || tags[2] || tags[3] || tags[4];
384
385
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 6 if (!file_size) {
386
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 3 if (ff_parse_creation_time_metadata(s, &asf->creation_time, 0) != 0)
387 ✗ av_dict_set(&s->metadata, "creation_time", NULL, 0);
388 }
389
390 6 metadata_count = av_dict_count(s->metadata);
391
392 6 bit_rate = 0;
393
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 14 for (unsigned n = 0; n < s->nb_streams; n++) {
394 8 AVStream *const st = s->streams[n];
395 8 AVCodecParameters *const par = st->codecpar;
396 AVDictionaryEntry *entry;
397
398 8 avpriv_set_pts_info(s->streams[n], 32, 1, 1000); /* 32 bit pts in ms */
399
400 8 bit_rate += par->bit_rate;
401
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 8 if ( par->codec_type == AVMEDIA_TYPE_VIDEO
402
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 2 && par->sample_aspect_ratio.num > 0
403 ✗ && par->sample_aspect_ratio.den > 0)
404 ✗ has_aspect_ratio++;
405
406 8 entry = av_dict_get(s->streams[n]->metadata, "language", NULL, 0);
407
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 8 if (entry) {
408 ✗ const char *iso6391lang = ff_convert_lang_to(entry->value, AV_LANG_ISO639_1);
409 ✗ if (iso6391lang) {
410 int i;
411 ✗ for (i = 0; i < asf->nb_languages; i++) {
412 ✗ if (!strcmp(asf->languages[i], iso6391lang)) {
413 ✗ asf->streams[n].stream_language_index = i;
414 ✗ break;
415 }
416 }
417 ✗ if (i >= asf->nb_languages) {
418 ✗ asf->languages[asf->nb_languages] = iso6391lang;
419 ✗ asf->streams[n].stream_language_index = asf->nb_languages;
420 ✗ asf->nb_languages++;
421 }
422 ✗ if (par->codec_type == AVMEDIA_TYPE_AUDIO)
423 ✗ audio_language_counts[asf->streams[n].stream_language_index]++;
424 }
425 } else {
426 8 asf->streams[n].stream_language_index = 128;
427 }
428 }
429
430
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 6 if (asf->is_streamed) {
431 ✗ put_chunk(s, 0x4824, 0, 0xc00); /* start of stream (length will be patched later) */
432 }
433
434 6 ff_put_guid(pb, &ff_asf_header);
435 6 avio_wl64(pb, -1); /* header length, will be patched after */
436 6 avio_wl32(pb, 3 + has_title + !!metadata_count + s->nb_streams); /* number of chunks in header */
437 6 avio_w8(pb, 1); /* ??? */
438 6 avio_w8(pb, 2); /* ??? */
439
440 /* file header */
441 6 header_offset = avio_tell(pb);
442 6 hpos = put_header(pb, &ff_asf_file_header);
443 6 ff_put_guid(pb, &ff_asf_my_guid);
444 6 avio_wl64(pb, file_size);
445 6 avio_wl64(pb, unix_to_file_time(asf->creation_time));
446 6 avio_wl64(pb, asf->nb_packets); /* number of packets */
447 6 avio_wl64(pb, duration); /* end time stamp (in 100ns units) */
448 6 avio_wl64(pb, asf->duration); /* duration (in 100ns units) */
449 6 avio_wl64(pb, PREROLL_TIME); /* start time stamp */
450
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 6 avio_wl32(pb, (asf->is_streamed || !(pb->seekable & AVIO_SEEKABLE_NORMAL)) ? 3 : 2); /* ??? */
451 6 avio_wl32(pb, s->packet_size); /* packet size */
452 6 avio_wl32(pb, s->packet_size); /* packet size */
453
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 6 avio_wl32(pb, bit_rate ? bit_rate : -1); /* Maximum data rate in bps */
454 6 end_header(pb, hpos);
455
456 /* header_extension */
457 6 hpos = put_header(pb, &ff_asf_head1_guid);
458 6 ff_put_guid(pb, &ff_asf_head2_guid);
459 6 avio_wl16(pb, 6);
460 6 avio_wl32(pb, 0); /* length, to be filled later */
461
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 6 if (asf->nb_languages) {
462 int64_t hpos2;
463 ✗ int nb_audio_languages = 0;
464
465 ✗ hpos2 = put_header(pb, &ff_asf_language_guid);
466 ✗ avio_wl16(pb, asf->nb_languages);
467 ✗ for (int i = 0; i < asf->nb_languages; i++) {
468 ✗ avio_w8(pb, 6);
469 ✗ avio_put_str16le(pb, asf->languages[i]);
470 }
471 ✗ end_header(pb, hpos2);
472
473 ✗ for (int i = 0; i < asf->nb_languages; i++)
474 ✗ if (audio_language_counts[i])
475 ✗ nb_audio_languages++;
476
477 ✗ if (nb_audio_languages > 1) {
478 ✗ hpos2 = put_header(pb, &ff_asf_group_mutual_exclusion_object);
479 ✗ ff_put_guid(pb, &ff_asf_mutex_language);
480 ✗ avio_wl16(pb, nb_audio_languages);
481 ✗ for (int i = 0; i < asf->nb_languages; i++) {
482 ✗ if (audio_language_counts[i]) {
483 ✗ avio_wl16(pb, audio_language_counts[i]);
484 ✗ for (unsigned n = 0; n < s->nb_streams; n++)
485 ✗ if (asf->streams[n].stream_language_index == i && s->streams[n]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
486 ✗ avio_wl16(pb, n + 1);
487 }
488 }
489 ✗ end_header(pb, hpos2);
490 }
491
492 ✗ for (unsigned n = 0; n < s->nb_streams; n++) {
493 int64_t es_pos;
494 ✗ if (asf->streams[n].stream_language_index > 127)
495 ✗ continue;
496 ✗ es_pos = put_header(pb, &ff_asf_extended_stream_properties_object);
497 ✗ avio_wl64(pb, 0); /* start time */
498 ✗ avio_wl64(pb, 0); /* end time */
499 ✗ avio_wl32(pb, s->streams[n]->codecpar->bit_rate); /* data bitrate bps */
500 ✗ avio_wl32(pb, 5000); /* buffer size ms */
501 ✗ avio_wl32(pb, 0); /* initial buffer fullness */
502 ✗ avio_wl32(pb, s->streams[n]->codecpar->bit_rate); /* peak data bitrate */
503 ✗ avio_wl32(pb, 5000); /* maximum buffer size ms */
504 ✗ avio_wl32(pb, 0); /* max initial buffer fullness */
505 ✗ avio_wl32(pb, 0); /* max object size */
506 ✗ avio_wl32(pb, (!asf->is_streamed && (pb->seekable & AVIO_SEEKABLE_NORMAL)) << 1); /* flags - seekable */
507 ✗ avio_wl16(pb, n + 1); /* stream number */
508 ✗ avio_wl16(pb, asf->streams[n].stream_language_index); /* language id index */
509 ✗ avio_wl64(pb, 0); /* avg time per frame */
510 ✗ avio_wl16(pb, 0); /* stream name count */
511 ✗ avio_wl16(pb, 0); /* payload extension system count */
512 ✗ end_header(pb, es_pos);
513 }
514 }
515
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 6 if (has_aspect_ratio) {
516 int64_t hpos2;
517 ✗ hpos2 = put_header(pb, &ff_asf_metadata_header);
518 ✗ avio_wl16(pb, 2 * has_aspect_ratio);
519 ✗ for (unsigned n = 0; n < s->nb_streams; n++) {
520 ✗ AVCodecParameters *const par = s->streams[n]->codecpar;
521 ✗ if ( par->codec_type == AVMEDIA_TYPE_VIDEO
522 ✗ && par->sample_aspect_ratio.num > 0
523 ✗ && par->sample_aspect_ratio.den > 0) {
524 ✗ AVRational sar = par->sample_aspect_ratio;
525 ✗ avio_wl16(pb, 0);
526 // the stream number is set like this below
527 ✗ avio_wl16(pb, n + 1);
528 ✗ avio_wl16(pb, 26); // name_len
529 ✗ avio_wl16(pb, 3); // value_type
530 ✗ avio_wl32(pb, 4); // value_len
531 ✗ avio_put_str16le(pb, "AspectRatioX");
532 ✗ avio_wl32(pb, sar.num);
533 ✗ avio_wl16(pb, 0);
534 // the stream number is set like this below
535 ✗ avio_wl16(pb, n + 1);
536 ✗ avio_wl16(pb, 26); // name_len
537 ✗ avio_wl16(pb, 3); // value_type
538 ✗ avio_wl32(pb, 4); // value_len
539 ✗ avio_put_str16le(pb, "AspectRatioY");
540 ✗ avio_wl32(pb, sar.den);
541 }
542 }
543 ✗ end_header(pb, hpos2);
544 }
545 {
546 int64_t pos1;
547 6 pos1 = avio_tell(pb);
548 6 avio_seek(pb, hpos + 42, SEEK_SET);
549 6 avio_wl32(pb, pos1 - hpos - 46);
550 6 avio_seek(pb, pos1, SEEK_SET);
551 }
552 6 end_header(pb, hpos);
553
554
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 6 if ((ret = avio_open_dyn_buf(&dyn_buf)) < 0)
555 ✗ return ret;
556
557 /* title and other info */
558
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 6 if (has_title) {
559 uint8_t *buf;
560 int len;
561
562 2 hpos = put_header(pb, &ff_asf_comment_header);
563
564
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 12 for (size_t n = 0; n < FF_ARRAY_ELEMS(tags); n++) {
565
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 10 len = tags[n] ? avio_put_str16le(dyn_buf, tags[n]->value) : 0;
566 10 avio_wl16(pb, len);
567 }
568 2 len = avio_get_dyn_buf(dyn_buf, &buf);
569 2 avio_write(pb, buf, len);
570 2 ffio_reset_dyn_buf(dyn_buf);
571 2 end_header(pb, hpos);
572 }
573
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 6 if (metadata_count) {
574 6 const AVDictionaryEntry *tag = NULL;
575 6 hpos = put_header(pb, &ff_asf_extended_content_header);
576 6 avio_wl16(pb, metadata_count);
577
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 12 while ((tag = av_dict_iterate(s->metadata, tag))) {
578 6 put_str16(pb, dyn_buf, tag->key);
579 6 avio_wl16(pb, 0);
580 6 put_str16(pb, dyn_buf, tag->value);
581 }
582 6 end_header(pb, hpos);
583 }
584 /* chapters using ASF markers */
585
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 6 if (!asf->is_streamed && s->nb_chapters) {
586 ✗ asf_write_markers(s, dyn_buf);
587 }
588 /* stream headers */
589
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 14 for (unsigned n = 0; n < s->nb_streams; n++) {
590 8 AVCodecParameters *const par = s->streams[n]->codecpar;
591 int64_t es_pos;
592 // ASFStream *stream = &asf->streams[n];
593
594 8 asf->streams[n].num = n + 1;
595 8 asf->streams[n].seq = 1;
596
597
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 8 switch (par->codec_type) {
598 6 case AVMEDIA_TYPE_AUDIO:
599 6 wav_extra_size = 0;
600 6 extra_size = 18 + wav_extra_size;
601 6 extra_size2 = 8;
602 6 break;
603 2 default:
604 case AVMEDIA_TYPE_VIDEO:
605 2 wav_extra_size = par->extradata_size;
606 2 extra_size = 0x33 + wav_extra_size;
607 2 extra_size2 = 0;
608 2 break;
609 }
610
611 8 hpos = put_header(pb, &ff_asf_stream_header);
612
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 8 if (par->codec_type == AVMEDIA_TYPE_AUDIO) {
613 6 ff_put_guid(pb, &ff_asf_audio_stream);
614 6 ff_put_guid(pb, &ff_asf_audio_conceal_spread);
615 } else {
616 2 ff_put_guid(pb, &ff_asf_video_stream);
617 2 ff_put_guid(pb, &ff_asf_video_conceal_none);
618 }
619 8 avio_wl64(pb, 0); /* ??? */
620 8 es_pos = avio_tell(pb);
621 8 avio_wl32(pb, extra_size); /* wav header len */
622 8 avio_wl32(pb, extra_size2); /* additional data len */
623 8 avio_wl16(pb, n + 1); /* stream number */
624 8 avio_wl32(pb, 0); /* ??? */
625
626
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 8 if (par->codec_type == AVMEDIA_TYPE_AUDIO) {
627 /* WAVEFORMATEX header */
628 6 int wavsize = ff_put_wav_header(s, pb, par, FF_PUT_WAV_HEADER_FORCE_WAVEFORMATEX);
629
630
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 6 if (wavsize < 0) {
631 ✗ ret = wavsize;
632 ✗ goto fail;
633 }
634
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 6 if (wavsize != extra_size) {
635 6 cur_pos = avio_tell(pb);
636 6 avio_seek(pb, es_pos, SEEK_SET);
637 6 avio_wl32(pb, wavsize); /* wav header len */
638 6 avio_seek(pb, cur_pos, SEEK_SET);
639 }
640 /* ERROR Correction */
641 6 avio_w8(pb, 0x01);
642
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 6 if (par->codec_id == AV_CODEC_ID_ADPCM_G726 || !par->block_align) {
643 2 avio_wl16(pb, 0x0190);
644 2 avio_wl16(pb, 0x0190);
645 } else {
646 4 avio_wl16(pb, par->block_align);
647 4 avio_wl16(pb, par->block_align);
648 }
649 6 avio_wl16(pb, 0x01);
650 6 avio_w8(pb, 0x00);
651 } else {
652 2 avio_wl32(pb, par->width);
653 2 avio_wl32(pb, par->height);
654 2 avio_w8(pb, 2); /* ??? */
655 2 avio_wl16(pb, 40 + par->extradata_size); /* size */
656
657 /* BITMAPINFOHEADER header */
658 2 ff_put_bmp_header(pb, par, 1, 0, 0);
659 }
660 8 end_header(pb, hpos);
661 }
662
663 /* media comments */
664
665 6 hpos = put_header(pb, &ff_asf_codec_comment_header);
666 6 ff_put_guid(pb, &ff_asf_codec_comment1_header);
667 6 avio_wl32(pb, s->nb_streams);
668
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 14 for (unsigned n = 0; n < s->nb_streams; n++) {
669 8 AVCodecParameters *const par = s->streams[n]->codecpar;
670 8 const AVCodecDescriptor *const codec_desc = avcodec_descriptor_get(par->codec_id);
671 const char *desc;
672
673
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 8 if (par->codec_type == AVMEDIA_TYPE_AUDIO)
674 6 avio_wl16(pb, 2);
675
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 2 else if (par->codec_type == AVMEDIA_TYPE_VIDEO)
676 2 avio_wl16(pb, 1);
677 else
678 ✗ avio_wl16(pb, -1);
679
680
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 8 if (par->codec_id == AV_CODEC_ID_WMAV2)
681 2 desc = "Windows Media Audio V8";
682 else
683
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 6 desc = codec_desc ? codec_desc->name : NULL;
684
685
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 8 if (desc) {
686 uint8_t *buf;
687 int len;
688
689 8 avio_put_str16le(dyn_buf, desc);
690 8 len = avio_get_dyn_buf(dyn_buf, &buf);
691 8 avio_wl16(pb, len / 2); // "number of characters" = length in bytes / 2
692
693 8 avio_write(pb, buf, len);
694 8 ffio_reset_dyn_buf(dyn_buf);
695 } else
696 ✗ avio_wl16(pb, 0);
697
698 8 avio_wl16(pb, 0); /* no parameters */
699
700 /* id */
701
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 8 if (par->codec_type == AVMEDIA_TYPE_AUDIO) {
702 6 avio_wl16(pb, 2);
703 6 avio_wl16(pb, par->codec_tag);
704 } else {
705 2 avio_wl16(pb, 4);
706 2 avio_wl32(pb, par->codec_tag);
707 }
708
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 8 if (!par->codec_tag) {
709 ✗ ret = AVERROR(EINVAL);
710 ✗ goto fail;
711 }
712 }
713 6 end_header(pb, hpos);
714
715 /* patch the header size fields */
716
717 6 cur_pos = avio_tell(pb);
718 6 header_size = cur_pos - header_offset;
719
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 6 if (asf->is_streamed) {
720 ✗ header_size += 8 + 30 + DATA_HEADER_SIZE;
721
722 ✗ avio_seek(pb, header_offset - 10 - 30, SEEK_SET);
723 ✗ avio_wl16(pb, header_size);
724 ✗ avio_seek(pb, header_offset - 2 - 30, SEEK_SET);
725 ✗ avio_wl16(pb, header_size);
726
727 ✗ header_size -= 8 + 30 + DATA_HEADER_SIZE;
728 }
729 6 header_size += 24 + 6;
730 6 avio_seek(pb, header_offset - 14, SEEK_SET);
731 6 avio_wl64(pb, header_size);
732 6 avio_seek(pb, cur_pos, SEEK_SET);
733
734 /* movie chunk, followed by packets of packet_size */
735 6 asf->data_offset = cur_pos;
736 6 ff_put_guid(pb, &ff_asf_data_header);
737 6 avio_wl64(pb, data_chunk_size);
738 6 ff_put_guid(pb, &ff_asf_my_guid);
739 6 avio_wl64(pb, asf->nb_packets); /* nb packets */
740 6 avio_w8(pb, 1); /* ??? */
741 6 avio_w8(pb, 1); /* ??? */
742 6 ret = 0;
743 6 fail:
744 6 ffio_free_dyn_buf(&dyn_buf);
745 6 return ret;
746 }
747
748 3 static int asf_write_header(AVFormatContext *s)
749 {
750 3 ASFContext *asf = s->priv_data;
751 int ret;
752
753 3 s->packet_size = asf->packet_size;
754 3 s->max_interleave_delta = 0;
755 3 asf->nb_packets = 0;
756
757
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 3 if (s->nb_streams > 127) {
758 ✗ av_log(s, AV_LOG_ERROR, "ASF can only handle 127 streams\n");
759 ✗ return AVERROR(EINVAL);
760 }
761
762 3 asf->index_ptr = av_malloc(sizeof(ASFIndex) * ASF_INDEX_BLOCK);
763
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 3 if (!asf->index_ptr)
764 ✗ return AVERROR(ENOMEM);
765 3 asf->nb_index_memory_alloc = ASF_INDEX_BLOCK;
766 3 asf->maximum_packet = 0;
767
768 /* the data-chunk-size has to be 50 (DATA_HEADER_SIZE), which is
769 * data_size - asf->data_offset at the moment this function is done.
770 * It is needed to use asf as a streamable format. */
771
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 3 if ((ret = asf_write_header1(s, 0, DATA_HEADER_SIZE)) < 0)
772 ✗ return ret;
773
774 3 asf->packet_nb_payloads = 0;
775 3 asf->packet_timestamp_start = -1;
776 3 asf->packet_timestamp_end = -1;
777 3 ffio_init_write_context(&asf->pb, asf->packet_buf, s->packet_size);
778
779
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 3 if (s->avoid_negative_ts < 0)
780 3 s->avoid_negative_ts = 1;
781
782 3 return 0;
783 }
784
785 ✗ static int asf_write_stream_header(AVFormatContext *s)
786 {
787 ✗ ASFContext *asf = s->priv_data;
788
789 ✗ asf->is_streamed = 1;
790
791 ✗ return asf_write_header(s);
792 }
793
794 208 static int put_payload_parsing_info(AVFormatContext *s,
795 unsigned sendtime, unsigned duration,
796 int nb_payloads, int padsize)
797 {
798 208 ASFContext *asf = s->priv_data;
799 208 AVIOContext *pb = s->pb;
800 int ppi_size;
801 208 int64_t start = avio_tell(pb);
802
803 208 int iLengthTypeFlags = ASF_PPI_LENGTH_TYPE_FLAGS;
804
805 208 padsize -= PACKET_HEADER_MIN_SIZE;
806
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 208 if (asf->multi_payloads_present)
807 135 padsize--;
808
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 208 av_assert0(padsize >= 0);
809
810 208 avio_w8(pb, ASF_PACKET_ERROR_CORRECTION_FLAGS);
811 208 ffio_fill(pb, 0x0, ASF_PACKET_ERROR_CORRECTION_DATA_SIZE);
812
813
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 208 if (asf->multi_payloads_present)
814 135 iLengthTypeFlags |= ASF_PPI_FLAG_MULTIPLE_PAYLOADS_PRESENT;
815
816
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 208 if (padsize > 0) {
817
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 110 if (padsize < 256)
818 107 iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE;
819 else
820 3 iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD;
821 }
822 208 avio_w8(pb, iLengthTypeFlags);
823
824 208 avio_w8(pb, ASF_PPI_PROPERTY_FLAGS);
825
826
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 208 if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD)
827 3 avio_wl16(pb, padsize - 2);
828
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 208 if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE)
829 107 avio_w8(pb, padsize - 1);
830
831 208 avio_wl32(pb, sendtime);
832 208 avio_wl16(pb, duration);
833
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 208 if (asf->multi_payloads_present)
834 135 avio_w8(pb, nb_payloads | ASF_PAYLOAD_FLAGS);
835
836 208 ppi_size = avio_tell(pb) - start;
837
838 208 return ppi_size;
839 }
840
841 208 static void flush_packet(AVFormatContext *s)
842 {
843 208 ASFContext *asf = s->priv_data;
844 int packet_hdr_size, packet_filled_size;
845
846
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 208 av_assert0(asf->packet_timestamp_end >= asf->packet_timestamp_start);
847
848
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 208 if (asf->is_streamed)
849 ✗ put_chunk(s, 0x4424, s->packet_size, 0);
850
851 208 packet_hdr_size = put_payload_parsing_info(s,
852 208 asf->packet_timestamp_start,
853 208 asf->packet_timestamp_end - asf->packet_timestamp_start,
854 208 asf->packet_nb_payloads,
855 asf->packet_size_left);
856
857 208 packet_filled_size = asf->packet_size - asf->packet_size_left;
858
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 208 av_assert0(packet_hdr_size <= asf->packet_size_left);
859 208 memset(asf->packet_buf + packet_filled_size, 0, asf->packet_size_left);
860
861 208 avio_write(s->pb, asf->packet_buf, s->packet_size - packet_hdr_size);
862
863 208 avio_write_marker(s->pb, AV_NOPTS_VALUE, AVIO_DATA_MARKER_FLUSH_POINT);
864
865 208 asf->nb_packets++;
866 208 asf->packet_nb_payloads = 0;
867 208 asf->packet_timestamp_start = -1;
868 208 asf->packet_timestamp_end = -1;
869 208 ffio_init_write_context(&asf->pb, asf->packet_buf, s->packet_size);
870 208 }
871
872 572 static void put_payload_header(AVFormatContext *s, ASFStream *stream,
873 int64_t presentation_time, int m_obj_size,
874 int m_obj_offset, int payload_len, int flags)
875 {
876 572 ASFContext *asf = s->priv_data;
877 572 AVIOContext *const pb = &asf->pb.pub;
878 int val;
879
880 572 val = stream->num;
881
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 572 if (flags & AV_PKT_FLAG_KEY)
882 30 val |= ASF_PL_FLAG_KEY_FRAME;
883 572 avio_w8(pb, val);
884
885 572 avio_w8(pb, stream->seq); // Media object number
886 572 avio_wl32(pb, m_obj_offset); // Offset Into Media Object
887
888 // Replicated Data shall be at least 8 bytes long.
889 // The first 4 bytes of data shall contain the
890 // Size of the Media Object that the payload belongs to.
891 // The next 4 bytes of data shall contain the
892 // Presentation Time for the media object that the payload belongs to.
893 572 avio_w8(pb, ASF_PAYLOAD_REPLICATED_DATA_LENGTH);
894
895 572 avio_wl32(pb, m_obj_size); // Replicated Data - Media Object Size
896 572 avio_wl32(pb, (uint32_t) presentation_time); // Replicated Data - Presentation Time
897
898
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 572 if (asf->multi_payloads_present) {
899 499 avio_wl16(pb, payload_len); // payload length
900 }
901 572 }
902
903 474 static void put_frame(AVFormatContext *s, ASFStream *stream, AVStream *avst,
904 int64_t timestamp, const uint8_t *buf,
905 int m_obj_size, int flags)
906 {
907 474 ASFContext *asf = s->priv_data;
908 int m_obj_offset, payload_len, frag_len1;
909
910 474 m_obj_offset = 0;
911
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 1153 while (m_obj_offset < m_obj_size) {
912 679 payload_len = m_obj_size - m_obj_offset;
913
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 679 if (asf->packet_timestamp_start == -1) {
914 208 const int multi_payload_constant = (asf->packet_size - MULTI_PAYLOAD_HEADERS);
915 208 asf->multi_payloads_present = (payload_len < multi_payload_constant);
916
917 208 asf->packet_size_left = asf->packet_size;
918
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 208 if (asf->multi_payloads_present) {
919 135 frag_len1 = multi_payload_constant - 1;
920 } else {
921 73 frag_len1 = asf->packet_size - SINGLE_PAYLOAD_HEADERS;
922 }
923 208 asf->packet_timestamp_start = timestamp;
924 } else {
925 // multi payloads
926 471 frag_len1 = asf->packet_size_left -
927 PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS -
928 PACKET_HEADER_MIN_SIZE - 1;
929
930
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 471 if (frag_len1 < payload_len &&
931
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 132 avst->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
932 107 flush_packet(s);
933 107 continue;
934 }
935
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 364 if (asf->packet_timestamp_start > INT64_MAX - UINT16_MAX ||
936
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 364 timestamp > asf->packet_timestamp_start + UINT16_MAX) {
937 ✗ flush_packet(s);
938 ✗ continue;
939 }
940 }
941
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 572 if (frag_len1 > 0) {
942
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 572 if (payload_len > frag_len1)
943 98 payload_len = frag_len1;
944
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 474 else if (payload_len == (frag_len1 - 1))
945 ✗ payload_len = frag_len1 - 2; // additional byte need to put padding length
946
947 572 put_payload_header(s, stream, timestamp + PREROLL_TIME,
948 m_obj_size, m_obj_offset, payload_len, flags);
949 572 avio_write(&asf->pb.pub, buf, payload_len);
950
951
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 572 if (asf->multi_payloads_present)
952 499 asf->packet_size_left -= (payload_len + PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS);
953 else
954 73 asf->packet_size_left -= (payload_len + PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD);
955 572 asf->packet_timestamp_end = timestamp;
956
957 572 asf->packet_nb_payloads++;
958 } else {
959 ✗ payload_len = 0;
960 }
961 572 m_obj_offset += payload_len;
962 572 buf += payload_len;
963
964
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 572 if (!asf->multi_payloads_present)
965 73 flush_packet(s);
966
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 499 else if (asf->packet_size_left <= (PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS + PACKET_HEADER_MIN_SIZE + 1))
967 25 flush_packet(s);
968
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 474 else if (asf->packet_nb_payloads == ASF_PAYLOADS_PER_PACKET)
969 ✗ flush_packet(s);
970 }
971 474 stream->seq++;
972 474 }
973
974 4 static int update_index(AVFormatContext *s, int start_sec,
975 uint32_t packet_number, uint16_t packet_count,
976 uint64_t packet_offset)
977 {
978 4 ASFContext *asf = s->priv_data;
979
980
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 4 if (start_sec > asf->next_start_sec) {
981
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 3 if (!asf->next_start_sec) {
982 1 asf->next_packet_number = packet_number;
983 1 asf->next_packet_count = packet_count;
984 1 asf->next_packet_offset = packet_offset;
985 }
986
987
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 3 if (start_sec > asf->nb_index_memory_alloc) {
988 int err;
989 ✗ asf->nb_index_memory_alloc = (start_sec + ASF_INDEX_BLOCK) & ~(ASF_INDEX_BLOCK - 1);
990 ✗ if ((err = av_reallocp_array(&asf->index_ptr,
991 ✗ asf->nb_index_memory_alloc,
992 sizeof(*asf->index_ptr))) < 0) {
993 ✗ asf->nb_index_memory_alloc = 0;
994 ✗ return err;
995 }
996 }
997
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 9 for (int i = asf->next_start_sec; i < start_sec; i++) {
998 6 asf->index_ptr[i].packet_number = asf->next_packet_number;
999 6 asf->index_ptr[i].packet_count = asf->next_packet_count;
1000 6 asf->index_ptr[i].send_time = asf->next_start_sec * INT64_C(10000000);
1001 6 asf->index_ptr[i].offset = asf->next_packet_offset;
1002
1003 }
1004 }
1005 4 asf->maximum_packet = FFMAX(asf->maximum_packet, packet_count);
1006 4 asf->next_packet_number = packet_number;
1007 4 asf->next_packet_count = packet_count;
1008 4 asf->next_packet_offset = packet_offset;
1009 4 asf->next_start_sec = start_sec;
1010
1011 4 return 0;
1012 }
1013
1014 474 static int asf_write_packet(AVFormatContext *s, AVPacket *pkt)
1015 {
1016 474 ASFContext *asf = s->priv_data;
1017 474 AVIOContext *pb = s->pb;
1018 ASFStream *stream;
1019 AVCodecParameters *par;
1020 uint32_t packet_number;
1021 int64_t pts;
1022 int start_sec;
1023 474 int flags = pkt->flags;
1024 int ret;
1025 474 uint64_t offset = avio_tell(pb);
1026
1027 474 par = s->streams[pkt->stream_index]->codecpar;
1028 474 stream = &asf->streams[pkt->stream_index];
1029
1030
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 474 if (par->codec_type == AVMEDIA_TYPE_AUDIO)
1031 449 flags &= ~AV_PKT_FLAG_KEY;
1032
1033
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 474 pts = (pkt->pts != AV_NOPTS_VALUE) ? pkt->pts : pkt->dts;
1034
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 474 av_assert0(pts != AV_NOPTS_VALUE);
1035
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 474 if ( pts < - PREROLL_TIME
1036
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 474 || pts > (INT_MAX-3)/10000LL * ASF_INDEXED_INTERVAL - PREROLL_TIME) {
1037 ✗ av_log(s, AV_LOG_ERROR, "input pts %"PRId64" is invalid\n", pts);
1038 ✗ return AVERROR(EINVAL);
1039 }
1040 474 pts *= 10000;
1041 474 asf->duration = FFMAX(asf->duration, pts + pkt->duration * 10000);
1042
1043 474 packet_number = asf->nb_packets;
1044 474 put_frame(s, stream, s->streams[pkt->stream_index],
1045 474 pkt->dts, pkt->data, pkt->size, flags);
1046
1047 474 start_sec = (int)((PREROLL_TIME * 10000 + pts + ASF_INDEXED_INTERVAL - 1)
1048 474 / ASF_INDEXED_INTERVAL);
1049
1050 /* check index */
1051
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 474 if ((!asf->is_streamed) && (flags & AV_PKT_FLAG_KEY)) {
1052 3 uint16_t packet_count = asf->nb_packets - packet_number;
1053 3 ret = update_index(s, start_sec, packet_number, packet_count, offset);
1054
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 3 if (ret < 0)
1055 ✗ return ret;
1056 }
1057 474 asf->end_sec = start_sec;
1058
1059 474 return 0;
1060 }
1061
1062 1 static int asf_write_index(AVFormatContext *s, const ASFIndex *index,
1063 uint16_t max, uint32_t count)
1064 {
1065 1 AVIOContext *pb = s->pb;
1066
1067 1 ff_put_guid(pb, &ff_asf_simple_index_header);
1068 1 avio_wl64(pb, 24 + 16 + 8 + 4 + 4 + (4 + 2) * count);
1069 1 ff_put_guid(pb, &ff_asf_my_guid);
1070 1 avio_wl64(pb, ASF_INDEXED_INTERVAL);
1071 1 avio_wl32(pb, max);
1072 1 avio_wl32(pb, count);
1073
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 7 for (uint32_t i = 0; i < count; i++) {
1074 6 avio_wl32(pb, index[i].packet_number);
1075 6 avio_wl16(pb, index[i].packet_count);
1076 }
1077
1078 1 return 0;
1079 }
1080
1081 3 static int asf_write_trailer(AVFormatContext *s)
1082 {
1083 3 ASFContext *asf = s->priv_data;
1084 int64_t file_size, data_size;
1085 int ret;
1086
1087 /* flush the current packet */
1088
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 3 if (asf->pb.pub.buf_ptr > asf->pb.pub.buffer)
1089 3 flush_packet(s);
1090
1091 /* write index */
1092 3 data_size = avio_tell(s->pb);
1093
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 3 if (!asf->is_streamed && asf->next_start_sec) {
1094
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 1 if ((ret = update_index(s, asf->end_sec + 1, 0, 0, 0)) < 0)
1095 ✗ return ret;
1096 1 asf_write_index(s, asf->index_ptr, asf->maximum_packet, asf->next_start_sec);
1097 }
1098
1099
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 3 if (asf->is_streamed || !(s->pb->seekable & AVIO_SEEKABLE_NORMAL)) {
1100 ✗ put_chunk(s, 0x4524, 0, 0); /* end of stream */
1101 } else {
1102 /* rewrite an updated header */
1103 3 file_size = avio_tell(s->pb);
1104 3 avio_seek(s->pb, 0, SEEK_SET);
1105 3 asf_write_header1(s, file_size, data_size - asf->data_offset);
1106 }
1107
1108 3 return 0;
1109 }
1110
1111 3 static void asf_deinit(AVFormatContext *s)
1112 {
1113 3 ASFContext *const asf = s->priv_data;
1114
1115 3 av_freep(&asf->index_ptr);
1116 3 }
1117
1118 static const AVOption asf_options[] = {
1119 { "packet_size", "Packet size", offsetof(ASFContext, packet_size), AV_OPT_TYPE_INT, {.i64 = 3200}, PACKET_SIZE_MIN, PACKET_SIZE_MAX, AV_OPT_FLAG_ENCODING_PARAM },
1120 { NULL },
1121 };
1122
1123 static const AVClass asf_muxer_class = {
1124 .class_name = "ASF (stream) muxer",
1125 .item_name = av_default_item_name,
1126 .option = asf_options,
1127 .version = LIBAVUTIL_VERSION_INT,
1128 };
1129
1130 #if CONFIG_ASF_MUXER
1131 const FFOutputFormat ff_asf_muxer = {
1132 .p.name = "asf",
1133 .p.long_name = NULL_IF_CONFIG_SMALL("ASF (Advanced / Active Streaming Format)"),
1134 .p.mime_type = "video/x-ms-asf",
1135 .p.extensions = "asf,wmv,wma",
1136 .p.audio_codec = AV_CODEC_ID_WMAV2,
1137 .p.video_codec = AV_CODEC_ID_MSMPEG4V3,
1138 .p.flags = AVFMT_GLOBALHEADER,
1139 .p.codec_tag = asf_codec_tags,
1140 .p.priv_class = &asf_muxer_class,
1141 .priv_data_size = sizeof(ASFContext),
1142 .write_header = asf_write_header,
1143 .write_packet = asf_write_packet,
1144 .write_trailer = asf_write_trailer,
1145 .deinit = asf_deinit,
1146 };
1147 #endif /* CONFIG_ASF_MUXER */
1148
1149 #if CONFIG_ASF_STREAM_MUXER
1150 const FFOutputFormat ff_asf_stream_muxer = {
1151 .p.name = "asf_stream",
1152 .p.long_name = NULL_IF_CONFIG_SMALL("ASF (Advanced / Active Streaming Format)"),
1153 .p.mime_type = "video/x-ms-asf",
1154 .p.extensions = "asf,wmv,wma",
1155 .priv_data_size = sizeof(ASFContext),
1156 .p.audio_codec = AV_CODEC_ID_WMAV2,
1157 .p.video_codec = AV_CODEC_ID_MSMPEG4V3,
1158 .write_header = asf_write_stream_header,
1159 .write_packet = asf_write_packet,
1160 .write_trailer = asf_write_trailer,
1161 .p.flags = AVFMT_GLOBALHEADER,
1162 .p.codec_tag = asf_codec_tags,
1163 .p.priv_class = &asf_muxer_class,
1164 .deinit = asf_deinit,
1165 };
1166 #endif /* CONFIG_ASF_STREAM_MUXER */
1167