| 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 | |
| 953 | static int asf_write_index(AVFormatContext *s, ASFIndex *index, |
| 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 */ |