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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 "libavutil/avassert.h" | |
23 | #include "libavutil/dict.h" | |
24 | #include "libavutil/mathematics.h" | |
25 | #include "avformat.h" | |
26 | #include "avio_internal.h" | |
27 | #include "internal.h" | |
28 | #include "riff.h" | |
29 | #include "asf.h" | |
30 | ||
31 | #undef NDEBUG | |
32 | #include <assert.h> | |
33 | ||
34 | ||
35 | #define ASF_INDEXED_INTERVAL 10000000 | |
36 | #define ASF_INDEX_BLOCK (1<<9) | |
37 | #define ASF_PAYLOADS_PER_PACKET 63 | |
38 | ||
39 | #define ASF_PACKET_ERROR_CORRECTION_DATA_SIZE 0x2 | |
40 | #define ASF_PACKET_ERROR_CORRECTION_FLAGS \ | |
41 | (ASF_PACKET_FLAG_ERROR_CORRECTION_PRESENT | \ | |
42 | ASF_PACKET_ERROR_CORRECTION_DATA_SIZE) | |
43 | ||
44 | #if (ASF_PACKET_ERROR_CORRECTION_FLAGS != 0) | |
45 | # define ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE 1 | |
46 | #else | |
47 | # define ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE 0 | |
48 | #endif | |
49 | ||
50 | #define ASF_PPI_PROPERTY_FLAGS \ | |
51 | (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE | \ | |
52 | ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_DWORD | \ | |
53 | ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE | \ | |
54 | ASF_PL_FLAG_STREAM_NUMBER_LENGTH_FIELD_IS_BYTE) | |
55 | ||
56 | #define ASF_PPI_LENGTH_TYPE_FLAGS 0 | |
57 | ||
58 | #define ASF_PAYLOAD_FLAGS ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD | |
59 | ||
60 | #if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE)) | |
61 | # define ASF_PPI_SEQUENCE_FIELD_SIZE 1 | |
62 | #endif | |
63 | #if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE)) | |
64 | # define ASF_PPI_SEQUENCE_FIELD_SIZE 2 | |
65 | #endif | |
66 | #if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE)) | |
67 | # define ASF_PPI_SEQUENCE_FIELD_SIZE 4 | |
68 | #endif | |
69 | #ifndef ASF_PPI_SEQUENCE_FIELD_SIZE | |
70 | # define ASF_PPI_SEQUENCE_FIELD_SIZE 0 | |
71 | #endif | |
72 | ||
73 | #if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE)) | |
74 | # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 1 | |
75 | #endif | |
76 | #if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE)) | |
77 | # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 2 | |
78 | #endif | |
79 | #if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE)) | |
80 | # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 4 | |
81 | #endif | |
82 | #ifndef ASF_PPI_PACKET_LENGTH_FIELD_SIZE | |
83 | # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 0 | |
84 | #endif | |
85 | ||
86 | #if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE)) | |
87 | # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 1 | |
88 | #endif | |
89 | #if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE)) | |
90 | # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 2 | |
91 | #endif | |
92 | #if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE)) | |
93 | # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 4 | |
94 | #endif | |
95 | #ifndef ASF_PPI_PADDING_LENGTH_FIELD_SIZE | |
96 | # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 0 | |
97 | #endif | |
98 | ||
99 | #if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE)) | |
100 | # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 1 | |
101 | #endif | |
102 | #if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_WORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE)) | |
103 | # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 2 | |
104 | #endif | |
105 | #if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_DWORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE)) | |
106 | # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 4 | |
107 | #endif | |
108 | #ifndef ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE | |
109 | # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 0 | |
110 | #endif | |
111 | ||
112 | #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)) | |
113 | # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 1 | |
114 | #endif | |
115 | #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)) | |
116 | # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 2 | |
117 | #endif | |
118 | #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)) | |
119 | # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 4 | |
120 | #endif | |
121 | #ifndef ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE | |
122 | # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 0 | |
123 | #endif | |
124 | ||
125 | #if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE)) | |
126 | # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 1 | |
127 | #endif | |
128 | #if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_WORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE)) | |
129 | # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 2 | |
130 | #endif | |
131 | #if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_DWORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE)) | |
132 | # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 4 | |
133 | #endif | |
134 | #ifndef ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE | |
135 | # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 0 | |
136 | #endif | |
137 | ||
138 | #if (ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_BYTE == (ASF_PAYLOAD_FLAGS & ASF_PL_MASK_PAYLOAD_LENGTH_FIELD_SIZE)) | |
139 | # define ASF_PAYLOAD_LENGTH_FIELD_SIZE 1 | |
140 | #endif | |
141 | #if (ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD == (ASF_PAYLOAD_FLAGS & ASF_PL_MASK_PAYLOAD_LENGTH_FIELD_SIZE)) | |
142 | # define ASF_PAYLOAD_LENGTH_FIELD_SIZE 2 | |
143 | #endif | |
144 | #ifndef ASF_PAYLOAD_LENGTH_FIELD_SIZE | |
145 | # define ASF_PAYLOAD_LENGTH_FIELD_SIZE 0 | |
146 | #endif | |
147 | ||
148 | #define PACKET_HEADER_MIN_SIZE \ | |
149 | (ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE + \ | |
150 | ASF_PACKET_ERROR_CORRECTION_DATA_SIZE + \ | |
151 | 1 + /* Length Type Flags */ \ | |
152 | 1 + /* Property Flags */ \ | |
153 | ASF_PPI_PACKET_LENGTH_FIELD_SIZE + \ | |
154 | ASF_PPI_SEQUENCE_FIELD_SIZE + \ | |
155 | ASF_PPI_PADDING_LENGTH_FIELD_SIZE + \ | |
156 | 4 + /* Send Time Field */ \ | |
157 | 2) /* Duration Field */ | |
158 | ||
159 | // Replicated Data shall be at least 8 bytes long. | |
160 | #define ASF_PAYLOAD_REPLICATED_DATA_LENGTH 0x08 | |
161 | ||
162 | #define PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD \ | |
163 | (1 + /* Stream Number */ \ | |
164 | ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE + \ | |
165 | ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE + \ | |
166 | ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE + \ | |
167 | ASF_PAYLOAD_REPLICATED_DATA_LENGTH) | |
168 | ||
169 | #define PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS \ | |
170 | (1 + /* Stream Number */ \ | |
171 | ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE + \ | |
172 | ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE + \ | |
173 | ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE + \ | |
174 | ASF_PAYLOAD_REPLICATED_DATA_LENGTH + \ | |
175 | ASF_PAYLOAD_LENGTH_FIELD_SIZE) | |
176 | ||
177 | #define SINGLE_PAYLOAD_DATA_LENGTH \ | |
178 | (PACKET_SIZE - \ | |
179 | PACKET_HEADER_MIN_SIZE - \ | |
180 | PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD) | |
181 | ||
182 | #define MULTI_PAYLOAD_CONSTANT \ | |
183 | (PACKET_SIZE - \ | |
184 | PACKET_HEADER_MIN_SIZE - \ | |
185 | 1 - /* Payload Flags */ \ | |
186 | 2 * PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS) | |
187 | ||
188 | #define DATA_HEADER_SIZE 50 | |
189 | ||
190 | typedef struct { | |
191 | uint32_t seqno; | |
192 | int is_streamed; | |
193 | ASFStream streams[128]; ///< it's max number and it's not that big | |
194 | /* non streamed additonnal info */ | |
195 | uint64_t nb_packets; ///< how many packets are there in the file, invalid if broadcasting | |
196 | int64_t duration; ///< in 100ns units | |
197 | /* packet filling */ | |
198 | unsigned char multi_payloads_present; | |
199 | int packet_size_left; | |
200 | int64_t packet_timestamp_start; | |
201 | int64_t packet_timestamp_end; | |
202 | unsigned int packet_nb_payloads; | |
203 | uint8_t packet_buf[PACKET_SIZE]; | |
204 | AVIOContext pb; | |
205 | /* only for reading */ | |
206 | uint64_t data_offset; ///< beginning of the first data packet | |
207 | ||
208 | ASFIndex *index_ptr; | |
209 | uint32_t nb_index_memory_alloc; | |
210 | uint16_t maximum_packet; | |
211 | uint32_t next_packet_number; | |
212 | uint16_t next_packet_count; | |
213 | uint64_t next_packet_offset; | |
214 | int next_start_sec; | |
215 | int end_sec; | |
216 | } ASFContext; | |
217 | ||
218 | static const AVCodecTag codec_asf_bmp_tags[] = { | |
219 | { AV_CODEC_ID_MPEG4, MKTAG('M', '4', 'S', '2') }, | |
220 | { AV_CODEC_ID_MPEG4, MKTAG('M', 'P', '4', 'S') }, | |
221 | { AV_CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', '4', '3') }, | |
222 | { AV_CODEC_ID_NONE, 0 }, | |
223 | }; | |
224 | ||
225 | #define PREROLL_TIME 3100 | |
226 | ||
227 | static void put_str16(AVIOContext *s, const char *tag) | |
228 | { | |
229 | int len; | |
230 | uint8_t *pb; | |
231 | AVIOContext *dyn_buf; | |
232 | if (avio_open_dyn_buf(&dyn_buf) < 0) | |
233 | return; | |
234 | ||
235 | avio_put_str16le(dyn_buf, tag); | |
236 | len = avio_close_dyn_buf(dyn_buf, &pb); | |
237 | avio_wl16(s, len); | |
238 | avio_write(s, pb, len); | |
239 | av_freep(&pb); | |
240 | } | |
241 | ||
242 | static int64_t put_header(AVIOContext *pb, const ff_asf_guid *g) | |
243 | { | |
244 | int64_t pos; | |
245 | ||
246 | pos = avio_tell(pb); | |
247 | ff_put_guid(pb, g); | |
248 | avio_wl64(pb, 24); | |
249 | return pos; | |
250 | } | |
251 | ||
252 | /* update header size */ | |
253 | static void end_header(AVIOContext *pb, int64_t pos) | |
254 | { | |
255 | int64_t pos1; | |
256 | ||
257 | pos1 = avio_tell(pb); | |
258 | avio_seek(pb, pos + 16, SEEK_SET); | |
259 | avio_wl64(pb, pos1 - pos); | |
260 | avio_seek(pb, pos1, SEEK_SET); | |
261 | } | |
262 | ||
263 | /* write an asf chunk (only used in streaming case) */ | |
264 | static void put_chunk(AVFormatContext *s, int type, | |
265 | int payload_length, int flags) | |
266 | { | |
267 | ASFContext *asf = s->priv_data; | |
268 | AVIOContext *pb = s->pb; | |
269 | int length; | |
270 | ||
271 | length = payload_length + 8; | |
272 | avio_wl16(pb, type); | |
273 | avio_wl16(pb, length); // size | |
274 | avio_wl32(pb, asf->seqno); // sequence number | |
275 | avio_wl16(pb, flags); // unknown bytes | |
276 | avio_wl16(pb, length); // size_confirm | |
277 | asf->seqno++; | |
278 | } | |
279 | ||
280 | /* convert from unix to windows time */ | |
281 | static int64_t unix_to_file_time(int ti) | |
282 | { | |
283 | int64_t t; | |
284 | ||
285 | t = ti * INT64_C(10000000); | |
286 | t += INT64_C(116444736000000000); | |
287 | return t; | |
288 | } | |
289 | ||
290 | static int32_t get_send_time(ASFContext *asf, int64_t pres_time, uint64_t *offset) | |
291 | { | |
292 | int i; | |
293 | int32_t send_time = 0; | |
294 | *offset = asf->data_offset + DATA_HEADER_SIZE; | |
295 | for (i = 0; i < asf->next_start_sec; i++) { | |
296 | if (pres_time <= asf->index_ptr[i].send_time) | |
297 | break; | |
298 | send_time = asf->index_ptr[i].send_time; | |
299 | *offset = asf->index_ptr[i].offset; | |
300 | } | |
301 | ||
302 | return send_time / 10000; | |
303 | } | |
304 | ||
305 | static int asf_write_markers(AVFormatContext *s) | |
306 | { | |
307 | ASFContext *asf = s->priv_data; | |
308 | AVIOContext *pb = s->pb; | |
309 | int i; | |
310 | AVRational scale = {1, 10000000}; | |
311 | int64_t hpos = put_header(pb, &ff_asf_marker_header); | |
312 | ||
313 | ff_put_guid(pb, &ff_asf_reserved_4);// ASF spec mandates this reserved value | |
314 | avio_wl32(pb, s->nb_chapters); // markers count | |
315 | avio_wl16(pb, 0); // ASF spec mandates 0 for this | |
316 | avio_wl16(pb, 0); // name length 0, no name given | |
317 | ||
318 | for (i = 0; i < s->nb_chapters; i++) { | |
319 | AVChapter *c = s->chapters[i]; | |
320 | AVDictionaryEntry *t = av_dict_get(c->metadata, "title", NULL, 0); | |
321 | int64_t pres_time = av_rescale_q(c->start, c->time_base, scale); | |
322 | uint64_t offset; | |
323 | int32_t send_time = get_send_time(asf, pres_time, &offset); | |
324 | int len = 0; | |
325 | uint8_t *buf; | |
326 | AVIOContext *dyn_buf; | |
327 | if (t) { | |
328 | if (avio_open_dyn_buf(&dyn_buf) < 0) | |
329 | return AVERROR(ENOMEM); | |
330 | avio_put_str16le(dyn_buf, t->value); | |
331 | len = avio_close_dyn_buf(dyn_buf, &buf); | |
332 | } | |
333 | avio_wl64(pb, offset); // offset of the packet with send_time | |
334 | avio_wl64(pb, pres_time + PREROLL_TIME * 10000); // presentation time | |
335 | avio_wl16(pb, 12 + len); // entry length | |
336 | avio_wl32(pb, send_time); // send time | |
337 | avio_wl32(pb, 0); // flags, should be 0 | |
338 | avio_wl32(pb, len / 2); // marker desc length in WCHARS! | |
339 | if (t) { | |
340 | avio_write(pb, buf, len); // marker desc | |
341 | av_freep(&buf); | |
342 | } | |
343 | } | |
344 | end_header(pb, hpos); | |
345 | return 0; | |
346 | } | |
347 | ||
348 | /* write the header (used two times if non streamed) */ | |
349 | static int asf_write_header1(AVFormatContext *s, int64_t file_size, | |
350 | int64_t data_chunk_size) | |
351 | { | |
352 | ASFContext *asf = s->priv_data; | |
353 | AVIOContext *pb = s->pb; | |
354 | AVDictionaryEntry *tags[5]; | |
355 | int header_size, n, extra_size, extra_size2, wav_extra_size, file_time; | |
356 | int has_title, has_aspect_ratio = 0; | |
357 | int metadata_count; | |
358 | AVCodecContext *enc; | |
359 | int64_t header_offset, cur_pos, hpos; | |
360 | int bit_rate; | |
361 | int64_t duration; | |
362 | ||
363 | ff_metadata_conv(&s->metadata, ff_asf_metadata_conv, NULL); | |
364 | ||
365 | tags[0] = av_dict_get(s->metadata, "title", NULL, 0); | |
366 | tags[1] = av_dict_get(s->metadata, "author", NULL, 0); | |
367 | tags[2] = av_dict_get(s->metadata, "copyright", NULL, 0); | |
368 | tags[3] = av_dict_get(s->metadata, "comment", NULL, 0); | |
369 | tags[4] = av_dict_get(s->metadata, "rating", NULL, 0); | |
370 | ||
371 | duration = asf->duration + PREROLL_TIME * 10000; | |
372 | has_title = tags[0] || tags[1] || tags[2] || tags[3] || tags[4]; | |
373 | metadata_count = av_dict_count(s->metadata); | |
374 | ||
375 | bit_rate = 0; | |
376 | for (n = 0; n < s->nb_streams; n++) { | |
377 | enc = s->streams[n]->codec; | |
378 | ||
379 | avpriv_set_pts_info(s->streams[n], 32, 1, 1000); /* 32 bit pts in ms */ | |
380 | ||
381 | bit_rate += enc->bit_rate; | |
382 | if ( enc->codec_type == AVMEDIA_TYPE_VIDEO | |
383 | && enc->sample_aspect_ratio.num > 0 | |
384 | && enc->sample_aspect_ratio.den > 0) | |
385 | has_aspect_ratio++; | |
386 | } | |
387 | ||
388 | if (asf->is_streamed) { | |
389 | put_chunk(s, 0x4824, 0, 0xc00); /* start of stream (length will be patched later) */ | |
390 | } | |
391 | ||
392 | ff_put_guid(pb, &ff_asf_header); | |
393 | avio_wl64(pb, -1); /* header length, will be patched after */ | |
394 | avio_wl32(pb, 3 + has_title + !!metadata_count + s->nb_streams); /* number of chunks in header */ | |
395 | avio_w8(pb, 1); /* ??? */ | |
396 | avio_w8(pb, 2); /* ??? */ | |
397 | ||
398 | /* file header */ | |
399 | header_offset = avio_tell(pb); | |
400 | hpos = put_header(pb, &ff_asf_file_header); | |
401 | ff_put_guid(pb, &ff_asf_my_guid); | |
402 | avio_wl64(pb, file_size); | |
403 | file_time = 0; | |
404 | avio_wl64(pb, unix_to_file_time(file_time)); | |
405 | avio_wl64(pb, asf->nb_packets); /* number of packets */ | |
406 | avio_wl64(pb, duration); /* end time stamp (in 100ns units) */ | |
407 | avio_wl64(pb, asf->duration); /* duration (in 100ns units) */ | |
408 | avio_wl64(pb, PREROLL_TIME); /* start time stamp */ | |
409 | avio_wl32(pb, (asf->is_streamed || !pb->seekable) ? 3 : 2); /* ??? */ | |
410 | avio_wl32(pb, s->packet_size); /* packet size */ | |
411 | avio_wl32(pb, s->packet_size); /* packet size */ | |
412 | avio_wl32(pb, bit_rate ? bit_rate : -1); /* Maximum data rate in bps */ | |
413 | end_header(pb, hpos); | |
414 | ||
415 | /* unknown headers */ | |
416 | hpos = put_header(pb, &ff_asf_head1_guid); | |
417 | ff_put_guid(pb, &ff_asf_head2_guid); | |
418 | avio_wl16(pb, 6); | |
419 | if (has_aspect_ratio) { | |
420 | int64_t hpos2; | |
421 | avio_wl32(pb, 26 + has_aspect_ratio * 84); | |
422 | hpos2 = put_header(pb, &ff_asf_metadata_header); | |
423 | avio_wl16(pb, 2 * has_aspect_ratio); | |
424 | for (n = 0; n < s->nb_streams; n++) { | |
425 | enc = s->streams[n]->codec; | |
426 | if ( enc->codec_type == AVMEDIA_TYPE_VIDEO | |
427 | && enc->sample_aspect_ratio.num > 0 | |
428 | && enc->sample_aspect_ratio.den > 0) { | |
429 | AVRational sar = enc->sample_aspect_ratio; | |
430 | avio_wl16(pb, 0); | |
431 | // the stream number is set like this below | |
432 | avio_wl16(pb, n + 1); | |
433 | avio_wl16(pb, 26); // name_len | |
434 | avio_wl16(pb, 3); // value_type | |
435 | avio_wl32(pb, 4); // value_len | |
436 | avio_put_str16le(pb, "AspectRatioX"); | |
437 | avio_wl32(pb, sar.num); | |
438 | avio_wl16(pb, 0); | |
439 | // the stream number is set like this below | |
440 | avio_wl16(pb, n + 1); | |
441 | avio_wl16(pb, 26); // name_len | |
442 | avio_wl16(pb, 3); // value_type | |
443 | avio_wl32(pb, 4); // value_len | |
444 | avio_put_str16le(pb, "AspectRatioY"); | |
445 | avio_wl32(pb, sar.den); | |
446 | } | |
447 | } | |
448 | end_header(pb, hpos2); | |
449 | } else { | |
450 | avio_wl32(pb, 0); | |
451 | } | |
452 | end_header(pb, hpos); | |
453 | ||
454 | /* title and other infos */ | |
455 | if (has_title) { | |
456 | int len; | |
457 | uint8_t *buf; | |
458 | AVIOContext *dyn_buf; | |
459 | ||
460 | if (avio_open_dyn_buf(&dyn_buf) < 0) | |
461 | return AVERROR(ENOMEM); | |
462 | ||
463 | hpos = put_header(pb, &ff_asf_comment_header); | |
464 | ||
465 | for (n = 0; n < FF_ARRAY_ELEMS(tags); n++) { | |
466 | len = tags[n] ? avio_put_str16le(dyn_buf, tags[n]->value) : 0; | |
467 | avio_wl16(pb, len); | |
468 | } | |
469 | len = avio_close_dyn_buf(dyn_buf, &buf); | |
470 | avio_write(pb, buf, len); | |
471 | av_freep(&buf); | |
472 | end_header(pb, hpos); | |
473 | } | |
474 | if (metadata_count) { | |
475 | AVDictionaryEntry *tag = NULL; | |
476 | hpos = put_header(pb, &ff_asf_extended_content_header); | |
477 | avio_wl16(pb, metadata_count); | |
478 | while ((tag = av_dict_get(s->metadata, "", tag, AV_DICT_IGNORE_SUFFIX))) { | |
479 | put_str16(pb, tag->key); | |
480 | avio_wl16(pb, 0); | |
481 | put_str16(pb, tag->value); | |
482 | } | |
483 | end_header(pb, hpos); | |
484 | } | |
485 | /* chapters using ASF markers */ | |
486 | if (!asf->is_streamed && s->nb_chapters) { | |
487 | int ret; | |
488 | if (ret = asf_write_markers(s)) | |
489 | return ret; | |
490 | } | |
491 | /* stream headers */ | |
492 | for (n = 0; n < s->nb_streams; n++) { | |
493 | int64_t es_pos; | |
494 | // ASFStream *stream = &asf->streams[n]; | |
495 | ||
496 | enc = s->streams[n]->codec; | |
497 | asf->streams[n].num = n + 1; | |
498 | asf->streams[n].seq = 1; | |
499 | ||
500 | switch (enc->codec_type) { | |
501 | case AVMEDIA_TYPE_AUDIO: | |
502 | wav_extra_size = 0; | |
503 | extra_size = 18 + wav_extra_size; | |
504 | extra_size2 = 8; | |
505 | break; | |
506 | default: | |
507 | case AVMEDIA_TYPE_VIDEO: | |
508 | wav_extra_size = enc->extradata_size; | |
509 | extra_size = 0x33 + wav_extra_size; | |
510 | extra_size2 = 0; | |
511 | break; | |
512 | } | |
513 | ||
514 | hpos = put_header(pb, &ff_asf_stream_header); | |
515 | if (enc->codec_type == AVMEDIA_TYPE_AUDIO) { | |
516 | ff_put_guid(pb, &ff_asf_audio_stream); | |
517 | ff_put_guid(pb, &ff_asf_audio_conceal_spread); | |
518 | } else { | |
519 | ff_put_guid(pb, &ff_asf_video_stream); | |
520 | ff_put_guid(pb, &ff_asf_video_conceal_none); | |
521 | } | |
522 | avio_wl64(pb, 0); /* ??? */ | |
523 | es_pos = avio_tell(pb); | |
524 | avio_wl32(pb, extra_size); /* wav header len */ | |
525 | avio_wl32(pb, extra_size2); /* additional data len */ | |
526 | avio_wl16(pb, n + 1); /* stream number */ | |
527 | avio_wl32(pb, 0); /* ??? */ | |
528 | ||
529 | if (enc->codec_type == AVMEDIA_TYPE_AUDIO) { | |
530 | /* WAVEFORMATEX header */ | |
531 | int wavsize = ff_put_wav_header(pb, enc, FF_PUT_WAV_HEADER_FORCE_WAVEFORMATEX); | |
532 | ||
533 | if (wavsize < 0) | |
534 | return -1; | |
535 | if (wavsize != extra_size) { | |
536 | cur_pos = avio_tell(pb); | |
537 | avio_seek(pb, es_pos, SEEK_SET); | |
538 | avio_wl32(pb, wavsize); /* wav header len */ | |
539 | avio_seek(pb, cur_pos, SEEK_SET); | |
540 | } | |
541 | /* ERROR Correction */ | |
542 | avio_w8(pb, 0x01); | |
543 | if (enc->codec_id == AV_CODEC_ID_ADPCM_G726 || !enc->block_align) { | |
544 | avio_wl16(pb, 0x0190); | |
545 | avio_wl16(pb, 0x0190); | |
546 | } else { | |
547 | avio_wl16(pb, enc->block_align); | |
548 | avio_wl16(pb, enc->block_align); | |
549 | } | |
550 | avio_wl16(pb, 0x01); | |
551 | avio_w8(pb, 0x00); | |
552 | } else { | |
553 | avio_wl32(pb, enc->width); | |
554 | avio_wl32(pb, enc->height); | |
555 | avio_w8(pb, 2); /* ??? */ | |
556 | avio_wl16(pb, 40 + enc->extradata_size); /* size */ | |
557 | ||
558 | /* BITMAPINFOHEADER header */ | |
559 | ff_put_bmp_header(pb, enc, ff_codec_bmp_tags, 1, 0); | |
560 | } | |
561 | end_header(pb, hpos); | |
562 | } | |
563 | ||
564 | /* media comments */ | |
565 | ||
566 | hpos = put_header(pb, &ff_asf_codec_comment_header); | |
567 | ff_put_guid(pb, &ff_asf_codec_comment1_header); | |
568 | avio_wl32(pb, s->nb_streams); | |
569 | for (n = 0; n < s->nb_streams; n++) { | |
570 | const AVCodecDescriptor *codec_desc; | |
571 | const char *desc; | |
572 | ||
573 | enc = s->streams[n]->codec; | |
574 | codec_desc = avcodec_descriptor_get(enc->codec_id); | |
575 | ||
576 | if (enc->codec_type == AVMEDIA_TYPE_AUDIO) | |
577 | avio_wl16(pb, 2); | |
578 | else if (enc->codec_type == AVMEDIA_TYPE_VIDEO) | |
579 | avio_wl16(pb, 1); | |
580 | else | |
581 | avio_wl16(pb, -1); | |
582 | ||
583 | if (enc->codec_id == AV_CODEC_ID_WMAV2) | |
584 | desc = "Windows Media Audio V8"; | |
585 | else | |
586 | desc = codec_desc ? codec_desc->name : NULL; | |
587 | ||
588 | if (desc) { | |
589 | AVIOContext *dyn_buf; | |
590 | uint8_t *buf; | |
591 | int len; | |
592 | ||
593 | if (avio_open_dyn_buf(&dyn_buf) < 0) | |
594 | return AVERROR(ENOMEM); | |
595 | ||
596 | avio_put_str16le(dyn_buf, desc); | |
597 | len = avio_close_dyn_buf(dyn_buf, &buf); | |
598 | avio_wl16(pb, len / 2); // "number of characters" = length in bytes / 2 | |
599 | ||
600 | avio_write(pb, buf, len); | |
601 | av_freep(&buf); | |
602 | } else | |
603 | avio_wl16(pb, 0); | |
604 | ||
605 | avio_wl16(pb, 0); /* no parameters */ | |
606 | ||
607 | /* id */ | |
608 | if (enc->codec_type == AVMEDIA_TYPE_AUDIO) { | |
609 | avio_wl16(pb, 2); | |
610 | avio_wl16(pb, enc->codec_tag); | |
611 | } else { | |
612 | avio_wl16(pb, 4); | |
613 | avio_wl32(pb, enc->codec_tag); | |
614 | } | |
615 | if (!enc->codec_tag) | |
616 | return -1; | |
617 | } | |
618 | end_header(pb, hpos); | |
619 | ||
620 | /* patch the header size fields */ | |
621 | ||
622 | cur_pos = avio_tell(pb); | |
623 | header_size = cur_pos - header_offset; | |
624 | if (asf->is_streamed) { | |
625 | header_size += 8 + 30 + DATA_HEADER_SIZE; | |
626 | ||
627 | avio_seek(pb, header_offset - 10 - 30, SEEK_SET); | |
628 | avio_wl16(pb, header_size); | |
629 | avio_seek(pb, header_offset - 2 - 30, SEEK_SET); | |
630 | avio_wl16(pb, header_size); | |
631 | ||
632 | header_size -= 8 + 30 + DATA_HEADER_SIZE; | |
633 | } | |
634 | header_size += 24 + 6; | |
635 | avio_seek(pb, header_offset - 14, SEEK_SET); | |
636 | avio_wl64(pb, header_size); | |
637 | avio_seek(pb, cur_pos, SEEK_SET); | |
638 | ||
639 | /* movie chunk, followed by packets of packet_size */ | |
640 | asf->data_offset = cur_pos; | |
641 | ff_put_guid(pb, &ff_asf_data_header); | |
642 | avio_wl64(pb, data_chunk_size); | |
643 | ff_put_guid(pb, &ff_asf_my_guid); | |
644 | avio_wl64(pb, asf->nb_packets); /* nb packets */ | |
645 | avio_w8(pb, 1); /* ??? */ | |
646 | avio_w8(pb, 1); /* ??? */ | |
647 | return 0; | |
648 | } | |
649 | ||
650 | static int asf_write_header(AVFormatContext *s) | |
651 | { | |
652 | ASFContext *asf = s->priv_data; | |
653 | ||
654 | s->packet_size = PACKET_SIZE; | |
655 | s->max_interleave_delta = 0; | |
656 | asf->nb_packets = 0; | |
657 | ||
658 | asf->index_ptr = av_malloc(sizeof(ASFIndex) * ASF_INDEX_BLOCK); | |
659 | asf->nb_index_memory_alloc = ASF_INDEX_BLOCK; | |
660 | asf->maximum_packet = 0; | |
661 | ||
662 | /* the data-chunk-size has to be 50 (DATA_HEADER_SIZE), which is | |
663 | * data_size - asf->data_offset at the moment this function is done. | |
664 | * It is needed to use asf as a streamable format. */ | |
665 | if (asf_write_header1(s, 0, DATA_HEADER_SIZE) < 0) { | |
666 | //av_free(asf); | |
667 | return -1; | |
668 | } | |
669 | ||
670 | avio_flush(s->pb); | |
671 | ||
672 | asf->packet_nb_payloads = 0; | |
673 | asf->packet_timestamp_start = -1; | |
674 | asf->packet_timestamp_end = -1; | |
675 | ffio_init_context(&asf->pb, asf->packet_buf, s->packet_size, 1, | |
676 | NULL, NULL, NULL, NULL); | |
677 | ||
678 | if (s->avoid_negative_ts < 0) | |
679 | s->avoid_negative_ts = 1; | |
680 | ||
681 | return 0; | |
682 | } | |
683 | ||
684 | static int asf_write_stream_header(AVFormatContext *s) | |
685 | { | |
686 | ASFContext *asf = s->priv_data; | |
687 | ||
688 | asf->is_streamed = 1; | |
689 | ||
690 | return asf_write_header(s); | |
691 | } | |
692 | ||
693 | static int put_payload_parsing_info(AVFormatContext *s, | |
694 | unsigned sendtime, unsigned duration, | |
695 | int nb_payloads, int padsize) | |
696 | { | |
697 | ASFContext *asf = s->priv_data; | |
698 | AVIOContext *pb = s->pb; | |
699 | int ppi_size, i; | |
700 | int64_t start = avio_tell(pb); | |
701 | ||
702 | int iLengthTypeFlags = ASF_PPI_LENGTH_TYPE_FLAGS; | |
703 | ||
704 | padsize -= PACKET_HEADER_MIN_SIZE; | |
705 | if (asf->multi_payloads_present) | |
706 | padsize--; | |
707 | av_assert0(padsize >= 0); | |
708 | ||
709 | avio_w8(pb, ASF_PACKET_ERROR_CORRECTION_FLAGS); | |
710 | for (i = 0; i < ASF_PACKET_ERROR_CORRECTION_DATA_SIZE; i++) | |
711 | avio_w8(pb, 0x0); | |
712 | ||
713 | if (asf->multi_payloads_present) | |
714 | iLengthTypeFlags |= ASF_PPI_FLAG_MULTIPLE_PAYLOADS_PRESENT; | |
715 | ||
716 | if (padsize > 0) { | |
717 | if (padsize < 256) | |
718 | iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE; | |
719 | else | |
720 | iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD; | |
721 | } | |
722 | avio_w8(pb, iLengthTypeFlags); | |
723 | ||
724 | avio_w8(pb, ASF_PPI_PROPERTY_FLAGS); | |
725 | ||
726 | if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD) | |
727 | avio_wl16(pb, padsize - 2); | |
728 | if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE) | |
729 | avio_w8(pb, padsize - 1); | |
730 | ||
731 | avio_wl32(pb, sendtime); | |
732 | avio_wl16(pb, duration); | |
733 | if (asf->multi_payloads_present) | |
734 | avio_w8(pb, nb_payloads | ASF_PAYLOAD_FLAGS); | |
735 | ||
736 | ppi_size = avio_tell(pb) - start; | |
737 | ||
738 | return ppi_size; | |
739 | } | |
740 | ||
741 | static void flush_packet(AVFormatContext *s) | |
742 | { | |
743 | ASFContext *asf = s->priv_data; | |
744 | int packet_hdr_size, packet_filled_size; | |
745 | ||
746 | av_assert0(asf->packet_timestamp_end >= asf->packet_timestamp_start); | |
747 | ||
748 | if (asf->is_streamed) | |
749 | put_chunk(s, 0x4424, s->packet_size, 0); | |
750 | ||
751 | packet_hdr_size = put_payload_parsing_info(s, | |
752 | asf->packet_timestamp_start, | |
753 | asf->packet_timestamp_end - asf->packet_timestamp_start, | |
754 | asf->packet_nb_payloads, | |
755 | asf->packet_size_left); | |
756 | ||
757 | packet_filled_size = PACKET_SIZE - asf->packet_size_left; | |
758 | av_assert0(packet_hdr_size <= asf->packet_size_left); | |
759 | memset(asf->packet_buf + packet_filled_size, 0, asf->packet_size_left); | |
760 | ||
761 | avio_write(s->pb, asf->packet_buf, s->packet_size - packet_hdr_size); | |
762 | ||
763 | avio_flush(s->pb); | |
764 | asf->nb_packets++; | |
765 | asf->packet_nb_payloads = 0; | |
766 | asf->packet_timestamp_start = -1; | |
767 | asf->packet_timestamp_end = -1; | |
768 | ffio_init_context(&asf->pb, asf->packet_buf, s->packet_size, 1, | |
769 | NULL, NULL, NULL, NULL); | |
770 | } | |
771 | ||
772 | static void put_payload_header(AVFormatContext *s, ASFStream *stream, | |
773 | int64_t presentation_time, int m_obj_size, | |
774 | int m_obj_offset, int payload_len, int flags) | |
775 | { | |
776 | ASFContext *asf = s->priv_data; | |
777 | AVIOContext *pb = &asf->pb; | |
778 | int val; | |
779 | ||
780 | val = stream->num; | |
781 | if (flags & AV_PKT_FLAG_KEY) | |
782 | val |= ASF_PL_FLAG_KEY_FRAME; | |
783 | avio_w8(pb, val); | |
784 | ||
785 | avio_w8(pb, stream->seq); // Media object number | |
786 | avio_wl32(pb, m_obj_offset); // Offset Into Media Object | |
787 | ||
788 | // Replicated Data shall be at least 8 bytes long. | |
789 | // The first 4 bytes of data shall contain the | |
790 | // Size of the Media Object that the payload belongs to. | |
791 | // The next 4 bytes of data shall contain the | |
792 | // Presentation Time for the media object that the payload belongs to. | |
793 | avio_w8(pb, ASF_PAYLOAD_REPLICATED_DATA_LENGTH); | |
794 | ||
795 | avio_wl32(pb, m_obj_size); // Replicated Data - Media Object Size | |
796 | avio_wl32(pb, (uint32_t) presentation_time); // Replicated Data - Presentation Time | |
797 | ||
798 | if (asf->multi_payloads_present) { | |
799 | avio_wl16(pb, payload_len); // payload length | |
800 | } | |
801 | } | |
802 | ||
803 | static void put_frame(AVFormatContext *s, ASFStream *stream, AVStream *avst, | |
804 | int64_t timestamp, const uint8_t *buf, | |
805 | int m_obj_size, int flags) | |
806 | { | |
807 | ASFContext *asf = s->priv_data; | |
808 | int m_obj_offset, payload_len, frag_len1; | |
809 | ||
810 | m_obj_offset = 0; | |
811 | while (m_obj_offset < m_obj_size) { | |
812 | payload_len = m_obj_size - m_obj_offset; | |
813 | if (asf->packet_timestamp_start == -1) { | |
814 | asf->multi_payloads_present = (payload_len < MULTI_PAYLOAD_CONSTANT); | |
815 | ||
816 | asf->packet_size_left = PACKET_SIZE; | |
817 | if (asf->multi_payloads_present) { | |
818 | frag_len1 = MULTI_PAYLOAD_CONSTANT - 1; | |
819 | } else { | |
820 | frag_len1 = SINGLE_PAYLOAD_DATA_LENGTH; | |
821 | } | |
822 | asf->packet_timestamp_start = timestamp; | |
823 | } else { | |
824 | // multi payloads | |
825 | frag_len1 = asf->packet_size_left - | |
826 | PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS - | |
827 | PACKET_HEADER_MIN_SIZE - 1; | |
828 | ||
829 | if (frag_len1 < payload_len && | |
830 | avst->codec->codec_type == AVMEDIA_TYPE_AUDIO) { | |
831 | flush_packet(s); | |
832 | continue; | |
833 | } | |
834 | } | |
835 | if (frag_len1 > 0) { | |
836 | if (payload_len > frag_len1) | |
837 | payload_len = frag_len1; | |
838 | else if (payload_len == (frag_len1 - 1)) | |
839 | payload_len = frag_len1 - 2; // additional byte need to put padding length | |
840 | ||
841 | put_payload_header(s, stream, timestamp + PREROLL_TIME, | |
842 | m_obj_size, m_obj_offset, payload_len, flags); | |
843 | avio_write(&asf->pb, buf, payload_len); | |
844 | ||
845 | if (asf->multi_payloads_present) | |
846 | asf->packet_size_left -= (payload_len + PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS); | |
847 | else | |
848 | asf->packet_size_left -= (payload_len + PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD); | |
849 | asf->packet_timestamp_end = timestamp; | |
850 | ||
851 | asf->packet_nb_payloads++; | |
852 | } else { | |
853 | payload_len = 0; | |
854 | } | |
855 | m_obj_offset += payload_len; | |
856 | buf += payload_len; | |
857 | ||
858 | if (!asf->multi_payloads_present) | |
859 | flush_packet(s); | |
860 | else if (asf->packet_size_left <= (PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS + PACKET_HEADER_MIN_SIZE + 1)) | |
861 | flush_packet(s); | |
862 | else if (asf->packet_nb_payloads == ASF_PAYLOADS_PER_PACKET) | |
863 | flush_packet(s); | |
864 | } | |
865 | stream->seq++; | |
866 | } | |
867 | ||
868 | static int update_index(AVFormatContext *s, int start_sec, | |
869 | uint32_t packet_number, uint16_t packet_count, | |
870 | uint64_t packet_offset) | |
871 | { | |
872 | ASFContext *asf = s->priv_data; | |
873 | ||
874 | if (start_sec > asf->next_start_sec) { | |
875 | int i; | |
876 | ||
877 | if (!asf->next_start_sec) { | |
878 | asf->next_packet_number = packet_number; | |
879 | asf->next_packet_count = packet_count; | |
880 | asf->next_packet_offset = packet_offset; | |
881 | } | |
882 | ||
883 | if (start_sec > asf->nb_index_memory_alloc) { | |
884 | int err; | |
885 | asf->nb_index_memory_alloc = (start_sec + ASF_INDEX_BLOCK) & ~(ASF_INDEX_BLOCK - 1); | |
886 | if ((err = av_reallocp_array(&asf->index_ptr, | |
887 | asf->nb_index_memory_alloc, | |
888 | sizeof(*asf->index_ptr))) < 0) { | |
889 | asf->nb_index_memory_alloc = 0; | |
890 | return err; | |
891 | } | |
892 | } | |
893 | for (i = asf->next_start_sec; i < start_sec; i++) { | |
894 | asf->index_ptr[i].packet_number = asf->next_packet_number; | |
895 | asf->index_ptr[i].packet_count = asf->next_packet_count; | |
896 | asf->index_ptr[i].send_time = asf->next_start_sec * INT64_C(10000000); | |
897 | asf->index_ptr[i].offset = asf->next_packet_offset; | |
898 | ||
899 | } | |
900 | } | |
901 | asf->maximum_packet = FFMAX(asf->maximum_packet, packet_count); | |
902 | asf->next_packet_number = packet_number; | |
903 | asf->next_packet_count = packet_count; | |
904 | asf->next_packet_offset = packet_offset; | |
905 | asf->next_start_sec = start_sec; | |
906 | ||
907 | return 0; | |
908 | } | |
909 | ||
910 | static int asf_write_packet(AVFormatContext *s, AVPacket *pkt) | |
911 | { | |
912 | ASFContext *asf = s->priv_data; | |
913 | AVIOContext *pb = s->pb; | |
914 | ASFStream *stream; | |
915 | AVCodecContext *codec; | |
916 | uint32_t packet_number; | |
917 | int64_t pts; | |
918 | int start_sec; | |
919 | int flags = pkt->flags; | |
920 | int ret; | |
921 | uint64_t offset = avio_tell(pb); | |
922 | ||
923 | codec = s->streams[pkt->stream_index]->codec; | |
924 | stream = &asf->streams[pkt->stream_index]; | |
925 | ||
926 | if (codec->codec_type == AVMEDIA_TYPE_AUDIO) | |
927 | flags &= ~AV_PKT_FLAG_KEY; | |
928 | ||
929 | pts = (pkt->pts != AV_NOPTS_VALUE) ? pkt->pts : pkt->dts; | |
930 | av_assert0(pts != AV_NOPTS_VALUE); | |
931 | pts *= 10000; | |
932 | asf->duration = FFMAX(asf->duration, pts + pkt->duration * 10000); | |
933 | ||
934 | packet_number = asf->nb_packets; | |
935 | put_frame(s, stream, s->streams[pkt->stream_index], | |
936 | pkt->dts, pkt->data, pkt->size, flags); | |
937 | ||
938 | start_sec = (int)((PREROLL_TIME * 10000 + pts + ASF_INDEXED_INTERVAL - 1) | |
939 | / ASF_INDEXED_INTERVAL); | |
940 | ||
941 | /* check index */ | |
942 | if ((!asf->is_streamed) && (flags & AV_PKT_FLAG_KEY)) { | |
943 | uint16_t packet_count = asf->nb_packets - packet_number; | |
944 | ret = update_index(s, start_sec, packet_number, packet_count, offset); | |
945 | if (ret < 0) | |
946 | return ret; | |
947 | } | |
948 | asf->end_sec = start_sec; | |
949 | ||
950 | return 0; | |
951 | } | |
952 | ||
f6fa7814 | 953 | static int asf_write_index(AVFormatContext *s, const ASFIndex *index, |
2ba45a60 DM |
954 | uint16_t max, uint32_t count) |
955 | { | |
956 | AVIOContext *pb = s->pb; | |
957 | int i; | |
958 | ||
959 | ff_put_guid(pb, &ff_asf_simple_index_header); | |
960 | avio_wl64(pb, 24 + 16 + 8 + 4 + 4 + (4 + 2) * count); | |
961 | ff_put_guid(pb, &ff_asf_my_guid); | |
962 | avio_wl64(pb, ASF_INDEXED_INTERVAL); | |
963 | avio_wl32(pb, max); | |
964 | avio_wl32(pb, count); | |
965 | for (i = 0; i < count; i++) { | |
966 | avio_wl32(pb, index[i].packet_number); | |
967 | avio_wl16(pb, index[i].packet_count); | |
968 | } | |
969 | ||
970 | return 0; | |
971 | } | |
972 | ||
973 | static int asf_write_trailer(AVFormatContext *s) | |
974 | { | |
975 | ASFContext *asf = s->priv_data; | |
976 | int64_t file_size, data_size; | |
977 | int ret; | |
978 | ||
979 | /* flush the current packet */ | |
980 | if (asf->pb.buf_ptr > asf->pb.buffer) | |
981 | flush_packet(s); | |
982 | ||
983 | /* write index */ | |
984 | data_size = avio_tell(s->pb); | |
985 | if (!asf->is_streamed && asf->next_start_sec) { | |
986 | if ((ret = update_index(s, asf->end_sec + 1, 0, 0, 0)) < 0) | |
987 | return ret; | |
988 | asf_write_index(s, asf->index_ptr, asf->maximum_packet, asf->next_start_sec); | |
989 | } | |
990 | avio_flush(s->pb); | |
991 | ||
992 | if (asf->is_streamed || !s->pb->seekable) { | |
993 | put_chunk(s, 0x4524, 0, 0); /* end of stream */ | |
994 | } else { | |
995 | /* rewrite an updated header */ | |
996 | file_size = avio_tell(s->pb); | |
997 | avio_seek(s->pb, 0, SEEK_SET); | |
998 | asf_write_header1(s, file_size, data_size - asf->data_offset); | |
999 | } | |
1000 | ||
1001 | av_freep(&asf->index_ptr); | |
1002 | return 0; | |
1003 | } | |
1004 | ||
1005 | #if CONFIG_ASF_MUXER | |
1006 | AVOutputFormat ff_asf_muxer = { | |
1007 | .name = "asf", | |
1008 | .long_name = NULL_IF_CONFIG_SMALL("ASF (Advanced / Active Streaming Format)"), | |
1009 | .mime_type = "video/x-ms-asf", | |
1010 | .extensions = "asf,wmv,wma", | |
1011 | .priv_data_size = sizeof(ASFContext), | |
1012 | .audio_codec = AV_CODEC_ID_WMAV2, | |
1013 | .video_codec = AV_CODEC_ID_MSMPEG4V3, | |
1014 | .write_header = asf_write_header, | |
1015 | .write_packet = asf_write_packet, | |
1016 | .write_trailer = asf_write_trailer, | |
1017 | .flags = AVFMT_GLOBALHEADER, | |
1018 | .codec_tag = (const AVCodecTag * const []) { | |
1019 | codec_asf_bmp_tags, ff_codec_bmp_tags, ff_codec_wav_tags, 0 | |
1020 | }, | |
1021 | }; | |
1022 | #endif /* CONFIG_ASF_MUXER */ | |
1023 | ||
1024 | #if CONFIG_ASF_STREAM_MUXER | |
1025 | AVOutputFormat ff_asf_stream_muxer = { | |
1026 | .name = "asf_stream", | |
1027 | .long_name = NULL_IF_CONFIG_SMALL("ASF (Advanced / Active Streaming Format)"), | |
1028 | .mime_type = "video/x-ms-asf", | |
1029 | .extensions = "asf,wmv,wma", | |
1030 | .priv_data_size = sizeof(ASFContext), | |
1031 | .audio_codec = AV_CODEC_ID_WMAV2, | |
1032 | .video_codec = AV_CODEC_ID_MSMPEG4V3, | |
1033 | .write_header = asf_write_stream_header, | |
1034 | .write_packet = asf_write_packet, | |
1035 | .write_trailer = asf_write_trailer, | |
1036 | .flags = AVFMT_GLOBALHEADER, | |
1037 | .codec_tag = (const AVCodecTag * const []) { | |
1038 | codec_asf_bmp_tags, ff_codec_bmp_tags, ff_codec_wav_tags, 0 | |
1039 | }, | |
1040 | }; | |
1041 | #endif /* CONFIG_ASF_STREAM_MUXER */ |