| 1 | /* |
| 2 | * Windows Television (WTV) muxer |
| 3 | * Copyright (c) 2011 Zhentan Feng <spyfeng at gmail dot com> |
| 4 | * Copyright (c) 2011 Peter Ross <pross@xvid.org> |
| 5 | * This file is part of FFmpeg. |
| 6 | * |
| 7 | * FFmpeg is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU Lesser General Public |
| 9 | * License as published by the Free Software Foundation; either |
| 10 | * version 2.1 of the License, or (at your option) any later version. |
| 11 | * |
| 12 | * FFmpeg is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 15 | * Lesser General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU Lesser General Public |
| 18 | * License along with FFmpeg; if not, write to the Free Software |
| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 20 | */ |
| 21 | |
| 22 | /** |
| 23 | * @file |
| 24 | * Windows Television (WTV) demuxer |
| 25 | * @author Zhentan Feng <spyfeng at gmail dot com> |
| 26 | */ |
| 27 | |
| 28 | #include "libavutil/intreadwrite.h" |
| 29 | #include "libavutil/avassert.h" |
| 30 | #include "avformat.h" |
| 31 | #include "avio_internal.h" |
| 32 | #include "internal.h" |
| 33 | #include "mpegts.h" |
| 34 | #include "wtv.h" |
| 35 | |
| 36 | #define WTV_BIGSECTOR_SIZE (1 << WTV_BIGSECTOR_BITS) |
| 37 | #define INDEX_BASE 0x2 |
| 38 | #define MAX_NB_INDEX 10 |
| 39 | |
| 40 | /* declare utf16le strings */ |
| 41 | #define _ , 0, |
| 42 | static const uint8_t timeline_table_0_header_events[] = |
| 43 | {'t'_'i'_'m'_'e'_'l'_'i'_'n'_'e'_'.'_'t'_'a'_'b'_'l'_'e'_'.'_'0'_'.'_'h'_'e'_'a'_'d'_'e'_'r'_'.'_'E'_'v'_'e'_'n'_'t'_'s', 0}; |
| 44 | static const uint8_t table_0_header_legacy_attrib[] = |
| 45 | {'t'_'a'_'b'_'l'_'e'_'.'_'0'_'.'_'h'_'e'_'a'_'d'_'e'_'r'_'.'_'l'_'e'_'g'_'a'_'c'_'y'_'_'_'a'_'t'_'t'_'r'_'i'_'b', 0}; |
| 46 | static const uint8_t table_0_redirector_legacy_attrib[] = |
| 47 | {'t'_'a'_'b'_'l'_'e'_'.'_'0'_'.'_'r'_'e'_'d'_'i'_'r'_'e'_'c'_'t'_'o'_'r'_'.'_'l'_'e'_'g'_'a'_'c'_'y'_'_'_'a'_'t'_'t'_'r'_'i'_'b', 0}; |
| 48 | static const uint8_t table_0_header_time[] = |
| 49 | {'t'_'a'_'b'_'l'_'e'_'.'_'0'_'.'_'h'_'e'_'a'_'d'_'e'_'r'_'.'_'t'_'i'_'m'_'e', 0}; |
| 50 | static const uint8_t legacy_attrib[] = |
| 51 | {'l'_'e'_'g'_'a'_'c'_'y'_'_'_'a'_'t'_'t'_'r'_'i'_'b', 0}; |
| 52 | #undef _ |
| 53 | |
| 54 | static const ff_asf_guid sub_wtv_guid = |
| 55 | {0x8C,0xC3,0xD2,0xC2,0x7E,0x9A,0xDA,0x11,0x8B,0xF7,0x00,0x07,0xE9,0x5E,0xAD,0x8D}; |
| 56 | |
| 57 | enum WtvFileIndex { |
| 58 | WTV_TIMELINE_TABLE_0_HEADER_EVENTS = 0, |
| 59 | WTV_TIMELINE_TABLE_0_ENTRIES_EVENTS, |
| 60 | WTV_TIMELINE, |
| 61 | WTV_TABLE_0_HEADER_LEGACY_ATTRIB, |
| 62 | WTV_TABLE_0_ENTRIES_LEGACY_ATTRIB, |
| 63 | WTV_TABLE_0_REDIRECTOR_LEGACY_ATTRIB, |
| 64 | WTV_TABLE_0_HEADER_TIME, |
| 65 | WTV_TABLE_0_ENTRIES_TIME, |
| 66 | WTV_FILES |
| 67 | }; |
| 68 | |
| 69 | typedef struct { |
| 70 | int64_t length; |
| 71 | const void *header; |
| 72 | int depth; |
| 73 | int first_sector; |
| 74 | } WtvFile; |
| 75 | |
| 76 | typedef struct { |
| 77 | int64_t pos; |
| 78 | int64_t serial; |
| 79 | const ff_asf_guid * guid; |
| 80 | int stream_id; |
| 81 | } WtvChunkEntry; |
| 82 | |
| 83 | typedef struct { |
| 84 | int64_t serial; |
| 85 | int64_t value; |
| 86 | } WtvSyncEntry; |
| 87 | |
| 88 | typedef struct { |
| 89 | int64_t timeline_start_pos; |
| 90 | WtvFile file[WTV_FILES]; |
| 91 | int64_t serial; /**< chunk serial number */ |
| 92 | int64_t last_chunk_pos; /**< last chunk position */ |
| 93 | int64_t last_timestamp_pos; /**< last timestamp chunk position */ |
| 94 | int64_t first_index_pos; /**< first index_chunk position */ |
| 95 | |
| 96 | WtvChunkEntry index[MAX_NB_INDEX]; |
| 97 | int nb_index; |
| 98 | int first_video_flag; |
| 99 | |
| 100 | WtvSyncEntry *st_pairs; /* (serial, timestamp) pairs */ |
| 101 | int nb_st_pairs; |
| 102 | WtvSyncEntry *sp_pairs; /* (serial, position) pairs */ |
| 103 | int nb_sp_pairs; |
| 104 | |
| 105 | int64_t last_pts; |
| 106 | int64_t last_serial; |
| 107 | |
| 108 | AVPacket thumbnail; |
| 109 | } WtvContext; |
| 110 | |
| 111 | |
| 112 | static void add_serial_pair(WtvSyncEntry ** list, int * count, int64_t serial, int64_t value) |
| 113 | { |
| 114 | int new_count = *count + 1; |
| 115 | WtvSyncEntry *new_list = av_realloc(*list, new_count * sizeof(WtvSyncEntry)); |
| 116 | if (!new_list) |
| 117 | return; |
| 118 | new_list[*count] = (WtvSyncEntry){serial, value}; |
| 119 | *list = new_list; |
| 120 | *count = new_count; |
| 121 | } |
| 122 | |
| 123 | typedef int WTVHeaderWriteFunc(AVIOContext *pb); |
| 124 | |
| 125 | typedef struct { |
| 126 | const uint8_t *header; |
| 127 | int header_size; |
| 128 | WTVHeaderWriteFunc *write_header; |
| 129 | } WTVRootEntryTable; |
| 130 | |
| 131 | #define write_pad(pb, size) ffio_fill(pb, 0, size) |
| 132 | |
| 133 | /** |
| 134 | * Write chunk header. If header chunk (0x80000000 set) then add to list of header chunks |
| 135 | */ |
| 136 | static void write_chunk_header(AVFormatContext *s, const ff_asf_guid *guid, int length, int stream_id) |
| 137 | { |
| 138 | WtvContext *wctx = s->priv_data; |
| 139 | AVIOContext *pb = s->pb; |
| 140 | |
| 141 | wctx->last_chunk_pos = avio_tell(pb) - wctx->timeline_start_pos; |
| 142 | ff_put_guid(pb, guid); |
| 143 | avio_wl32(pb, 32 + length); |
| 144 | avio_wl32(pb, stream_id); |
| 145 | avio_wl64(pb, wctx->serial); |
| 146 | |
| 147 | if ((stream_id & 0x80000000) && guid != &ff_index_guid) { |
| 148 | WtvChunkEntry *t = wctx->index + wctx->nb_index; |
| 149 | av_assert0(wctx->nb_index < MAX_NB_INDEX); |
| 150 | t->pos = wctx->last_chunk_pos; |
| 151 | t->serial = wctx->serial; |
| 152 | t->guid = guid; |
| 153 | t->stream_id = stream_id & 0x3FFFFFFF; |
| 154 | wctx->nb_index++; |
| 155 | } |
| 156 | } |
| 157 | |
| 158 | static void write_chunk_header2(AVFormatContext *s, const ff_asf_guid *guid, int stream_id) |
| 159 | { |
| 160 | WtvContext *wctx = s->priv_data; |
| 161 | AVIOContext *pb = s->pb; |
| 162 | |
| 163 | int64_t last_chunk_pos = wctx->last_chunk_pos; |
| 164 | write_chunk_header(s, guid, 0, stream_id); // length updated later |
| 165 | avio_wl64(pb, last_chunk_pos); |
| 166 | } |
| 167 | |
| 168 | static void finish_chunk_noindex(AVFormatContext *s) |
| 169 | { |
| 170 | WtvContext *wctx = s->priv_data; |
| 171 | AVIOContext *pb = s->pb; |
| 172 | |
| 173 | // update the chunk_len field and pad. |
| 174 | int64_t chunk_len = avio_tell(pb) - (wctx->last_chunk_pos + wctx->timeline_start_pos); |
| 175 | avio_seek(pb, -(chunk_len - 16), SEEK_CUR); |
| 176 | avio_wl32(pb, chunk_len); |
| 177 | avio_seek(pb, chunk_len - (16 + 4), SEEK_CUR); |
| 178 | |
| 179 | write_pad(pb, WTV_PAD8(chunk_len) - chunk_len); |
| 180 | wctx->serial++; |
| 181 | } |
| 182 | |
| 183 | static void write_index(AVFormatContext *s) |
| 184 | { |
| 185 | AVIOContext *pb = s->pb; |
| 186 | WtvContext *wctx = s->priv_data; |
| 187 | int i; |
| 188 | |
| 189 | write_chunk_header2(s, &ff_index_guid, 0x80000000); |
| 190 | avio_wl32(pb, 0); |
| 191 | avio_wl32(pb, 0); |
| 192 | |
| 193 | for (i = 0; i < wctx->nb_index; i++) { |
| 194 | WtvChunkEntry *t = wctx->index + i; |
| 195 | ff_put_guid(pb, t->guid); |
| 196 | avio_wl64(pb, t->pos); |
| 197 | avio_wl32(pb, t->stream_id); |
| 198 | avio_wl32(pb, 0); // checksum? |
| 199 | avio_wl64(pb, t->serial); |
| 200 | } |
| 201 | wctx->nb_index = 0; // reset index |
| 202 | finish_chunk_noindex(s); |
| 203 | |
| 204 | if (!wctx->first_index_pos) |
| 205 | wctx->first_index_pos = wctx->last_chunk_pos; |
| 206 | } |
| 207 | |
| 208 | static void finish_chunk(AVFormatContext *s) |
| 209 | { |
| 210 | WtvContext *wctx = s->priv_data; |
| 211 | finish_chunk_noindex(s); |
| 212 | if (wctx->nb_index == MAX_NB_INDEX) |
| 213 | write_index(s); |
| 214 | } |
| 215 | |
| 216 | static void put_videoinfoheader2(AVIOContext *pb, AVStream *st) |
| 217 | { |
| 218 | AVRational dar = av_mul_q(st->sample_aspect_ratio, (AVRational){st->codec->width, st->codec->height}); |
| 219 | unsigned int num, den; |
| 220 | av_reduce(&num, &den, dar.num, dar.den, 0xFFFFFFFF); |
| 221 | |
| 222 | /* VIDEOINFOHEADER2 */ |
| 223 | avio_wl32(pb, 0); |
| 224 | avio_wl32(pb, 0); |
| 225 | avio_wl32(pb, st->codec->width); |
| 226 | avio_wl32(pb, st->codec->height); |
| 227 | |
| 228 | avio_wl32(pb, 0); |
| 229 | avio_wl32(pb, 0); |
| 230 | avio_wl32(pb, 0); |
| 231 | avio_wl32(pb, 0); |
| 232 | |
| 233 | avio_wl32(pb, st->codec->bit_rate); |
| 234 | avio_wl32(pb, 0); |
| 235 | avio_wl64(pb, st->avg_frame_rate.num && st->avg_frame_rate.den ? INT64_C(10000000) / av_q2d(st->avg_frame_rate) : 0); |
| 236 | avio_wl32(pb, 0); |
| 237 | avio_wl32(pb, 0); |
| 238 | |
| 239 | avio_wl32(pb, num); |
| 240 | avio_wl32(pb, den); |
| 241 | avio_wl32(pb, 0); |
| 242 | avio_wl32(pb, 0); |
| 243 | |
| 244 | ff_put_bmp_header(pb, st->codec, ff_codec_bmp_tags, 0, 1); |
| 245 | |
| 246 | if (st->codec->codec_id == AV_CODEC_ID_MPEG2VIDEO) { |
| 247 | int padding = (st->codec->extradata_size & 3) ? 4 - (st->codec->extradata_size & 3) : 0; |
| 248 | /* MPEG2VIDEOINFO */ |
| 249 | avio_wl32(pb, 0); |
| 250 | avio_wl32(pb, st->codec->extradata_size + padding); |
| 251 | avio_wl32(pb, -1); |
| 252 | avio_wl32(pb, -1); |
| 253 | avio_wl32(pb, 0); |
| 254 | avio_write(pb, st->codec->extradata, st->codec->extradata_size); |
| 255 | ffio_fill(pb, 0, padding); |
| 256 | } |
| 257 | } |
| 258 | |
| 259 | static int write_stream_codec_info(AVFormatContext *s, AVStream *st) |
| 260 | { |
| 261 | const ff_asf_guid *g, *media_type, *format_type; |
| 262 | const AVCodecTag *tags; |
| 263 | AVIOContext *pb = s->pb; |
| 264 | int64_t hdr_pos_start; |
| 265 | int hdr_size = 0; |
| 266 | |
| 267 | if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) { |
| 268 | g = get_codec_guid(st->codec->codec_id, ff_video_guids); |
| 269 | media_type = &ff_mediatype_video; |
| 270 | format_type = st->codec->codec_id == AV_CODEC_ID_MPEG2VIDEO ? &ff_format_mpeg2_video : &ff_format_videoinfo2; |
| 271 | tags = ff_codec_bmp_tags; |
| 272 | } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) { |
| 273 | g = get_codec_guid(st->codec->codec_id, ff_codec_wav_guids); |
| 274 | media_type = &ff_mediatype_audio; |
| 275 | format_type = &ff_format_waveformatex; |
| 276 | tags = ff_codec_wav_tags; |
| 277 | } else { |
| 278 | av_log(s, AV_LOG_ERROR, "unknown codec_type (0x%x)\n", st->codec->codec_type); |
| 279 | return -1; |
| 280 | } |
| 281 | |
| 282 | ff_put_guid(pb, media_type); // mediatype |
| 283 | ff_put_guid(pb, &ff_mediasubtype_cpfilters_processed); // subtype |
| 284 | write_pad(pb, 12); |
| 285 | ff_put_guid(pb,&ff_format_cpfilters_processed); // format type |
| 286 | avio_wl32(pb, 0); // size |
| 287 | |
| 288 | hdr_pos_start = avio_tell(pb); |
| 289 | if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) { |
| 290 | put_videoinfoheader2(pb, st); |
| 291 | } else { |
| 292 | if (ff_put_wav_header(pb, st->codec, 0) < 0) |
| 293 | format_type = &ff_format_none; |
| 294 | } |
| 295 | hdr_size = avio_tell(pb) - hdr_pos_start; |
| 296 | |
| 297 | // seek back write hdr_size |
| 298 | avio_seek(pb, -(hdr_size + 4), SEEK_CUR); |
| 299 | avio_wl32(pb, hdr_size + 32); |
| 300 | avio_seek(pb, hdr_size, SEEK_CUR); |
| 301 | if (g) { |
| 302 | ff_put_guid(pb, g); // actual_subtype |
| 303 | } else { |
| 304 | int tag = ff_codec_get_tag(tags, st->codec->codec_id); |
| 305 | if (!tag) { |
| 306 | av_log(s, AV_LOG_ERROR, "unsupported codec_id (0x%x)\n", st->codec->codec_id); |
| 307 | return -1; |
| 308 | } |
| 309 | avio_wl32(pb, tag); |
| 310 | avio_write(pb, (const uint8_t[]){FF_MEDIASUBTYPE_BASE_GUID}, 12); |
| 311 | } |
| 312 | ff_put_guid(pb, format_type); // actual_formattype |
| 313 | |
| 314 | return 0; |
| 315 | } |
| 316 | |
| 317 | static int write_stream_codec(AVFormatContext *s, AVStream * st) |
| 318 | { |
| 319 | AVIOContext *pb = s->pb; |
| 320 | int ret; |
| 321 | write_chunk_header2(s, &ff_stream1_guid, 0x80000000 | 0x01); |
| 322 | |
| 323 | avio_wl32(pb, 0x01); |
| 324 | write_pad(pb, 4); |
| 325 | write_pad(pb, 4); |
| 326 | |
| 327 | ret = write_stream_codec_info(s, st); |
| 328 | if (ret < 0) { |
| 329 | av_log(s, AV_LOG_ERROR, "write stream codec info failed codec_type(0x%x)\n", st->codec->codec_type); |
| 330 | return -1; |
| 331 | } |
| 332 | |
| 333 | finish_chunk(s); |
| 334 | return 0; |
| 335 | } |
| 336 | |
| 337 | static void write_sync(AVFormatContext *s) |
| 338 | { |
| 339 | AVIOContext *pb = s->pb; |
| 340 | WtvContext *wctx = s->priv_data; |
| 341 | int64_t last_chunk_pos = wctx->last_chunk_pos; |
| 342 | |
| 343 | write_chunk_header(s, &ff_sync_guid, 0x18, 0); |
| 344 | avio_wl64(pb, wctx->first_index_pos); |
| 345 | avio_wl64(pb, wctx->last_timestamp_pos); |
| 346 | avio_wl64(pb, 0); |
| 347 | |
| 348 | finish_chunk(s); |
| 349 | add_serial_pair(&wctx->sp_pairs, &wctx->nb_sp_pairs, wctx->serial, wctx->last_chunk_pos); |
| 350 | |
| 351 | wctx->last_chunk_pos = last_chunk_pos; |
| 352 | } |
| 353 | |
| 354 | static int write_stream_data(AVFormatContext *s, AVStream *st) |
| 355 | { |
| 356 | AVIOContext *pb = s->pb; |
| 357 | int ret; |
| 358 | |
| 359 | write_chunk_header2(s, &ff_SBE2_STREAM_DESC_EVENT, 0x80000000 | (st->index + INDEX_BASE)); |
| 360 | avio_wl32(pb, 0x00000001); |
| 361 | avio_wl32(pb, st->index + INDEX_BASE); //stream_id |
| 362 | avio_wl32(pb, 0x00000001); |
| 363 | write_pad(pb, 8); |
| 364 | |
| 365 | ret = write_stream_codec_info(s, st); |
| 366 | if (ret < 0) { |
| 367 | av_log(s, AV_LOG_ERROR, "write stream codec info failed codec_type(0x%x)\n", st->codec->codec_type); |
| 368 | return -1; |
| 369 | } |
| 370 | finish_chunk(s); |
| 371 | |
| 372 | avpriv_set_pts_info(st, 64, 1, 10000000); |
| 373 | |
| 374 | return 0; |
| 375 | } |
| 376 | |
| 377 | static int write_header(AVFormatContext *s) |
| 378 | { |
| 379 | AVIOContext *pb = s->pb; |
| 380 | WtvContext *wctx = s->priv_data; |
| 381 | int i, pad, ret; |
| 382 | AVStream *st; |
| 383 | |
| 384 | wctx->last_chunk_pos = -1; |
| 385 | wctx->last_timestamp_pos = -1; |
| 386 | |
| 387 | ff_put_guid(pb, &ff_wtv_guid); |
| 388 | ff_put_guid(pb, &sub_wtv_guid); |
| 389 | |
| 390 | avio_wl32(pb, 0x01); |
| 391 | avio_wl32(pb, 0x02); |
| 392 | avio_wl32(pb, 1 << WTV_SECTOR_BITS); |
| 393 | avio_wl32(pb, 1 << WTV_BIGSECTOR_BITS); |
| 394 | |
| 395 | //write initial root fields |
| 396 | avio_wl32(pb, 0); // root_size, update later |
| 397 | write_pad(pb, 4); |
| 398 | avio_wl32(pb, 0); // root_sector, update it later. |
| 399 | |
| 400 | write_pad(pb, 32); |
| 401 | avio_wl32(pb, 0); // file ends pointer, update it later. |
| 402 | |
| 403 | pad = (1 << WTV_SECTOR_BITS) - avio_tell(pb); |
| 404 | write_pad(pb, pad); |
| 405 | |
| 406 | wctx->timeline_start_pos = avio_tell(pb); |
| 407 | |
| 408 | wctx->serial = 1; |
| 409 | wctx->last_chunk_pos = -1; |
| 410 | wctx->first_video_flag = 1; |
| 411 | |
| 412 | for (i = 0; i < s->nb_streams; i++) { |
| 413 | st = s->streams[i]; |
| 414 | if (st->codec->codec_id == AV_CODEC_ID_MJPEG) |
| 415 | continue; |
| 416 | ret = write_stream_codec(s, st); |
| 417 | if (ret < 0) { |
| 418 | av_log(s, AV_LOG_ERROR, "write stream codec failed codec_type(0x%x)\n", st->codec->codec_type); |
| 419 | return -1; |
| 420 | } |
| 421 | if (!i) |
| 422 | write_sync(s); |
| 423 | } |
| 424 | |
| 425 | for (i = 0; i < s->nb_streams; i++) { |
| 426 | st = s->streams[i]; |
| 427 | if (st->codec->codec_id == AV_CODEC_ID_MJPEG) |
| 428 | continue; |
| 429 | ret = write_stream_data(s, st); |
| 430 | if (ret < 0) { |
| 431 | av_log(s, AV_LOG_ERROR, "write stream data failed codec_type(0x%x)\n", st->codec->codec_type); |
| 432 | return -1; |
| 433 | } |
| 434 | } |
| 435 | |
| 436 | if (wctx->nb_index) |
| 437 | write_index(s); |
| 438 | |
| 439 | return 0; |
| 440 | } |
| 441 | |
| 442 | static void write_timestamp(AVFormatContext *s, AVPacket *pkt) |
| 443 | { |
| 444 | AVIOContext *pb = s->pb; |
| 445 | WtvContext *wctx = s->priv_data; |
| 446 | AVCodecContext *enc = s->streams[pkt->stream_index]->codec; |
| 447 | |
| 448 | write_chunk_header(s, &ff_timestamp_guid, 56, 0x40000000 | (INDEX_BASE + pkt->stream_index)); |
| 449 | write_pad(pb, 8); |
| 450 | avio_wl64(pb, pkt->pts == AV_NOPTS_VALUE ? -1 : pkt->pts); |
| 451 | avio_wl64(pb, pkt->pts == AV_NOPTS_VALUE ? -1 : pkt->pts); |
| 452 | avio_wl64(pb, pkt->pts == AV_NOPTS_VALUE ? -1 : pkt->pts); |
| 453 | avio_wl64(pb, 0); |
| 454 | avio_wl64(pb, enc->codec_type == AVMEDIA_TYPE_VIDEO && (pkt->flags & AV_PKT_FLAG_KEY) ? 1 : 0); |
| 455 | avio_wl64(pb, 0); |
| 456 | |
| 457 | wctx->last_timestamp_pos = wctx->last_chunk_pos; |
| 458 | } |
| 459 | |
| 460 | static int write_packet(AVFormatContext *s, AVPacket *pkt) |
| 461 | { |
| 462 | AVIOContext *pb = s->pb; |
| 463 | WtvContext *wctx = s->priv_data; |
| 464 | AVStream *st = s->streams[pkt->stream_index]; |
| 465 | |
| 466 | if (st->codec->codec_id == AV_CODEC_ID_MJPEG && !wctx->thumbnail.size) { |
| 467 | av_copy_packet(&wctx->thumbnail, pkt); |
| 468 | return 0; |
| 469 | } else if (st->codec->codec_id == AV_CODEC_ID_H264) { |
| 470 | int ret = ff_check_h264_startcode(s, st, pkt); |
| 471 | if (ret < 0) |
| 472 | return ret; |
| 473 | } |
| 474 | |
| 475 | /* emit sync chunk and 'timeline.table.0.entries.Event' record every 50 frames */ |
| 476 | if (wctx->serial - (wctx->nb_sp_pairs ? wctx->sp_pairs[wctx->nb_sp_pairs - 1].serial : 0) >= 50) |
| 477 | write_sync(s); |
| 478 | |
| 479 | /* emit 'table.0.entries.time' record every 500ms */ |
| 480 | if (pkt->pts != AV_NOPTS_VALUE && pkt->pts - (wctx->nb_st_pairs ? wctx->st_pairs[wctx->nb_st_pairs - 1].value : 0) >= 5000000) |
| 481 | add_serial_pair(&wctx->st_pairs, &wctx->nb_st_pairs, wctx->serial, pkt->pts); |
| 482 | |
| 483 | if (pkt->pts != AV_NOPTS_VALUE && pkt->pts > wctx->last_pts) { |
| 484 | wctx->last_pts = pkt->pts; |
| 485 | wctx->last_serial = wctx->serial; |
| 486 | } |
| 487 | |
| 488 | // write timestamp chunk |
| 489 | write_timestamp(s, pkt); |
| 490 | |
| 491 | write_chunk_header(s, &ff_data_guid, pkt->size, INDEX_BASE + pkt->stream_index); |
| 492 | avio_write(pb, pkt->data, pkt->size); |
| 493 | write_pad(pb, WTV_PAD8(pkt->size) - pkt->size); |
| 494 | |
| 495 | wctx->serial++; |
| 496 | return 0; |
| 497 | } |
| 498 | |
| 499 | static int write_table0_header_events(AVIOContext *pb) |
| 500 | { |
| 501 | avio_wl32(pb, 0x10); |
| 502 | write_pad(pb, 84); |
| 503 | avio_wl64(pb, 0x32); |
| 504 | return 96; |
| 505 | } |
| 506 | |
| 507 | static int write_table0_header_legacy_attrib(AVIOContext *pb) |
| 508 | { |
| 509 | int pad = 0; |
| 510 | avio_wl32(pb, 0xFFFFFFFF); |
| 511 | write_pad(pb, 12); |
| 512 | avio_write(pb, legacy_attrib, sizeof(legacy_attrib)); |
| 513 | pad = WTV_PAD8(sizeof(legacy_attrib)) - sizeof(legacy_attrib); |
| 514 | write_pad(pb, pad); |
| 515 | write_pad(pb, 32); |
| 516 | return 48 + WTV_PAD8(sizeof(legacy_attrib)); |
| 517 | } |
| 518 | |
| 519 | static int write_table0_header_time(AVIOContext *pb) |
| 520 | { |
| 521 | avio_wl32(pb, 0x10); |
| 522 | write_pad(pb, 76); |
| 523 | avio_wl64(pb, 0x40); |
| 524 | return 88; |
| 525 | } |
| 526 | |
| 527 | static const WTVRootEntryTable wtv_root_entry_table[] = { |
| 528 | { timeline_table_0_header_events, sizeof(timeline_table_0_header_events), write_table0_header_events}, |
| 529 | { ff_timeline_table_0_entries_Events_le16, sizeof(ff_timeline_table_0_entries_Events_le16), NULL}, |
| 530 | { ff_timeline_le16, sizeof(ff_timeline_le16), NULL}, |
| 531 | { table_0_header_legacy_attrib, sizeof(table_0_header_legacy_attrib), write_table0_header_legacy_attrib}, |
| 532 | { ff_table_0_entries_legacy_attrib_le16, sizeof(ff_table_0_entries_legacy_attrib_le16), NULL}, |
| 533 | { table_0_redirector_legacy_attrib, sizeof(table_0_redirector_legacy_attrib), NULL}, |
| 534 | { table_0_header_time, sizeof(table_0_header_time), write_table0_header_time}, |
| 535 | { ff_table_0_entries_time_le16, sizeof(ff_table_0_entries_time_le16), NULL}, |
| 536 | }; |
| 537 | |
| 538 | static int write_root_table(AVFormatContext *s, int64_t sector_pos) |
| 539 | { |
| 540 | AVIOContext *pb = s->pb; |
| 541 | WtvContext *wctx = s->priv_data; |
| 542 | int size, pad; |
| 543 | int i; |
| 544 | |
| 545 | const WTVRootEntryTable *h = wtv_root_entry_table; |
| 546 | for (i = 0; i < sizeof(wtv_root_entry_table)/sizeof(WTVRootEntryTable); i++, h++) { |
| 547 | WtvFile *w = &wctx->file[i]; |
| 548 | int filename_padding = WTV_PAD8(h->header_size) - h->header_size; |
| 549 | WTVHeaderWriteFunc *write = h->write_header; |
| 550 | int len = 0; |
| 551 | int64_t len_pos; |
| 552 | |
| 553 | ff_put_guid(pb, &ff_dir_entry_guid); |
| 554 | len_pos = avio_tell(pb); |
| 555 | avio_wl16(pb, 40 + h->header_size + filename_padding + 8); // maybe updated later |
| 556 | write_pad(pb, 6); |
| 557 | avio_wl64(pb, write ? 0 : w->length);// maybe update later |
| 558 | avio_wl32(pb, (h->header_size + filename_padding) >> 1); |
| 559 | write_pad(pb, 4); |
| 560 | |
| 561 | avio_write(pb, h->header, h->header_size); |
| 562 | write_pad(pb, filename_padding); |
| 563 | |
| 564 | if (write) { |
| 565 | len = write(pb); |
| 566 | // update length field |
| 567 | avio_seek(pb, len_pos, SEEK_SET); |
| 568 | avio_wl64(pb, 40 + h->header_size + filename_padding + len); |
| 569 | avio_wl64(pb, len |(1ULL<<62) | (1ULL<<60)); |
| 570 | avio_seek(pb, 8 + h->header_size + filename_padding + len, SEEK_CUR); |
| 571 | } else { |
| 572 | avio_wl32(pb, w->first_sector); |
| 573 | avio_wl32(pb, w->depth); |
| 574 | } |
| 575 | } |
| 576 | |
| 577 | // caculate root table size |
| 578 | size = avio_tell(pb) - sector_pos; |
| 579 | pad = WTV_SECTOR_SIZE- size; |
| 580 | write_pad(pb, pad); |
| 581 | |
| 582 | return size; |
| 583 | } |
| 584 | |
| 585 | static void write_fat(AVIOContext *pb, int start_sector, int nb_sectors, int shift) |
| 586 | { |
| 587 | int i; |
| 588 | for (i = 0; i < nb_sectors; i++) { |
| 589 | avio_wl32(pb, start_sector + (i << shift)); |
| 590 | } |
| 591 | // pad left sector pointer size |
| 592 | write_pad(pb, WTV_SECTOR_SIZE - ((nb_sectors << 2) % WTV_SECTOR_SIZE)); |
| 593 | } |
| 594 | |
| 595 | static int64_t write_fat_sector(AVFormatContext *s, int64_t start_pos, int nb_sectors, int sector_bits, int depth) |
| 596 | { |
| 597 | int64_t start_sector = start_pos >> WTV_SECTOR_BITS; |
| 598 | int shift = sector_bits - WTV_SECTOR_BITS; |
| 599 | |
| 600 | int64_t fat = avio_tell(s->pb); |
| 601 | write_fat(s->pb, start_sector, nb_sectors, shift); |
| 602 | |
| 603 | if (depth == 2) { |
| 604 | int64_t start_sector1 = fat >> WTV_SECTOR_BITS; |
| 605 | int nb_sectors1 = ((nb_sectors << 2) + WTV_SECTOR_SIZE - 1) / WTV_SECTOR_SIZE; |
| 606 | int64_t fat1 = avio_tell(s->pb); |
| 607 | |
| 608 | write_fat(s->pb, start_sector1, nb_sectors1, 0); |
| 609 | return fat1; |
| 610 | } |
| 611 | |
| 612 | return fat; |
| 613 | } |
| 614 | |
| 615 | static void write_table_entries_events(AVFormatContext *s) |
| 616 | { |
| 617 | AVIOContext *pb = s->pb; |
| 618 | WtvContext *wctx = s->priv_data; |
| 619 | int i; |
| 620 | for (i = 0; i < wctx->nb_sp_pairs; i++) { |
| 621 | avio_wl64(pb, wctx->sp_pairs[i].serial); |
| 622 | avio_wl64(pb, wctx->sp_pairs[i].value); |
| 623 | } |
| 624 | } |
| 625 | |
| 626 | static void write_table_entries_time(AVFormatContext *s) |
| 627 | { |
| 628 | AVIOContext *pb = s->pb; |
| 629 | WtvContext *wctx = s->priv_data; |
| 630 | int i; |
| 631 | for (i = 0; i < wctx->nb_st_pairs; i++) { |
| 632 | avio_wl64(pb, wctx->st_pairs[i].value); |
| 633 | avio_wl64(pb, wctx->st_pairs[i].serial); |
| 634 | } |
| 635 | avio_wl64(pb, wctx->last_pts); |
| 636 | avio_wl64(pb, wctx->last_serial); |
| 637 | } |
| 638 | |
| 639 | static void write_metadata_header(AVIOContext *pb, int type, const char *key, int value_size) |
| 640 | { |
| 641 | ff_put_guid(pb, &ff_metadata_guid); |
| 642 | avio_wl32(pb, type); |
| 643 | avio_wl32(pb, value_size); |
| 644 | avio_put_str16le(pb, key); |
| 645 | } |
| 646 | |
| 647 | static int metadata_header_size(const char *key) |
| 648 | { |
| 649 | return 16 + 4 + 4 + strlen(key)*2 + 2; |
| 650 | } |
| 651 | |
| 652 | static void write_tag_int32(AVIOContext *pb, const char *key, int value) |
| 653 | { |
| 654 | write_metadata_header(pb, 0, key, 4); |
| 655 | avio_wl32(pb, value); |
| 656 | } |
| 657 | |
| 658 | static void write_tag(AVIOContext *pb, const char *key, const char *value) |
| 659 | { |
| 660 | write_metadata_header(pb, 1, key, strlen(value)*2 + 2); |
| 661 | avio_put_str16le(pb, value); |
| 662 | } |
| 663 | |
| 664 | static int attachment_value_size(const AVPacket *pkt, const AVDictionaryEntry *e) |
| 665 | { |
| 666 | return strlen("image/jpeg")*2 + 2 + 1 + (e ? strlen(e->value)*2 : 0) + 2 + 4 + pkt->size; |
| 667 | } |
| 668 | |
| 669 | static void write_table_entries_attrib(AVFormatContext *s) |
| 670 | { |
| 671 | WtvContext *wctx = s->priv_data; |
| 672 | AVIOContext *pb = s->pb; |
| 673 | AVDictionaryEntry *tag = 0; |
| 674 | |
| 675 | //FIXME: translate special tags (e.g. WM/Bitrate) to binary representation |
| 676 | ff_metadata_conv(&s->metadata, ff_asf_metadata_conv, NULL); |
| 677 | while ((tag = av_dict_get(s->metadata, "", tag, AV_DICT_IGNORE_SUFFIX))) |
| 678 | write_tag(pb, tag->key, tag->value); |
| 679 | |
| 680 | if (wctx->thumbnail.size) { |
| 681 | AVStream *st = s->streams[wctx->thumbnail.stream_index]; |
| 682 | tag = av_dict_get(st->metadata, "title", NULL, 0); |
| 683 | write_metadata_header(pb, 2, "WM/Picture", attachment_value_size(&wctx->thumbnail, tag)); |
| 684 | |
| 685 | avio_put_str16le(pb, "image/jpeg"); |
| 686 | avio_w8(pb, 0x10); |
| 687 | avio_put_str16le(pb, tag ? tag->value : ""); |
| 688 | |
| 689 | avio_wl32(pb, wctx->thumbnail.size); |
| 690 | avio_write(pb, wctx->thumbnail.data, wctx->thumbnail.size); |
| 691 | |
| 692 | write_tag_int32(pb, "WM/MediaThumbType", 2); |
| 693 | } |
| 694 | } |
| 695 | |
| 696 | static void write_table_redirector_legacy_attrib(AVFormatContext *s) |
| 697 | { |
| 698 | WtvContext *wctx = s->priv_data; |
| 699 | AVIOContext *pb = s->pb; |
| 700 | AVDictionaryEntry *tag = 0; |
| 701 | int64_t pos = 0; |
| 702 | |
| 703 | //FIXME: translate special tags to binary representation |
| 704 | while ((tag = av_dict_get(s->metadata, "", tag, AV_DICT_IGNORE_SUFFIX))) { |
| 705 | avio_wl64(pb, pos); |
| 706 | pos += metadata_header_size(tag->key) + strlen(tag->value)*2 + 2; |
| 707 | } |
| 708 | |
| 709 | if (wctx->thumbnail.size) { |
| 710 | AVStream *st = s->streams[wctx->thumbnail.stream_index]; |
| 711 | avio_wl64(pb, pos); |
| 712 | pos += metadata_header_size("WM/Picture") + attachment_value_size(&wctx->thumbnail, av_dict_get(st->metadata, "title", NULL, 0)); |
| 713 | |
| 714 | avio_wl64(pb, pos); |
| 715 | pos += metadata_header_size("WM/MediaThumbType") + 4; |
| 716 | } |
| 717 | } |
| 718 | |
| 719 | /** |
| 720 | * Pad the remainder of a file |
| 721 | * Write out fat table |
| 722 | * @return <0 on error |
| 723 | */ |
| 724 | static int finish_file(AVFormatContext *s, enum WtvFileIndex index, int64_t start_pos) |
| 725 | { |
| 726 | WtvContext *wctx = s->priv_data; |
| 727 | AVIOContext *pb = s->pb; |
| 728 | WtvFile *w = &wctx->file[index]; |
| 729 | int64_t end_pos = avio_tell(pb); |
| 730 | int sector_bits, nb_sectors, pad; |
| 731 | |
| 732 | av_assert0(index < WTV_FILES); |
| 733 | |
| 734 | w->length = (end_pos - start_pos); |
| 735 | |
| 736 | // determine optimal fat table depth, sector_bits, nb_sectors |
| 737 | if (w->length <= WTV_SECTOR_SIZE) { |
| 738 | w->depth = 0; |
| 739 | sector_bits = WTV_SECTOR_BITS; |
| 740 | } else if (w->length <= (WTV_SECTOR_SIZE / 4) * WTV_SECTOR_SIZE) { |
| 741 | w->depth = 1; |
| 742 | sector_bits = WTV_SECTOR_BITS; |
| 743 | } else if (w->length <= (WTV_SECTOR_SIZE / 4) * WTV_BIGSECTOR_SIZE) { |
| 744 | w->depth = 1; |
| 745 | sector_bits = WTV_BIGSECTOR_BITS; |
| 746 | } else if (w->length <= (int64_t)(WTV_SECTOR_SIZE / 4) * (WTV_SECTOR_SIZE / 4) * WTV_SECTOR_SIZE) { |
| 747 | w->depth = 2; |
| 748 | sector_bits = WTV_SECTOR_BITS; |
| 749 | } else if (w->length <= (int64_t)(WTV_SECTOR_SIZE / 4) * (WTV_SECTOR_SIZE / 4) * WTV_BIGSECTOR_SIZE) { |
| 750 | w->depth = 2; |
| 751 | sector_bits = WTV_BIGSECTOR_BITS; |
| 752 | } else { |
| 753 | av_log(s, AV_LOG_ERROR, "unsupported file allocation table depth (%"PRIi64" bytes)\n", w->length); |
| 754 | return -1; |
| 755 | } |
| 756 | |
| 757 | // determine the nb_sectors |
| 758 | nb_sectors = (int)(w->length >> sector_bits); |
| 759 | |
| 760 | // pad sector of timeline |
| 761 | pad = (1 << sector_bits) - (w->length % (1 << sector_bits)); |
| 762 | if (pad) { |
| 763 | nb_sectors++; |
| 764 | write_pad(pb, pad); |
| 765 | } |
| 766 | |
| 767 | //write fat table |
| 768 | if (w->depth > 0) { |
| 769 | w->first_sector = write_fat_sector(s, start_pos, nb_sectors, sector_bits, w->depth) >> WTV_SECTOR_BITS; |
| 770 | } else { |
| 771 | w->first_sector = start_pos >> WTV_SECTOR_BITS; |
| 772 | } |
| 773 | |
| 774 | w->length |= 1ULL<<60; |
| 775 | if (sector_bits == WTV_SECTOR_BITS) |
| 776 | w->length |= 1ULL<<63; |
| 777 | |
| 778 | return 0; |
| 779 | } |
| 780 | |
| 781 | static int write_trailer(AVFormatContext *s) |
| 782 | { |
| 783 | WtvContext *wctx = s->priv_data; |
| 784 | AVIOContext *pb = s->pb; |
| 785 | int root_size; |
| 786 | int64_t sector_pos; |
| 787 | int64_t start_pos, file_end_pos; |
| 788 | |
| 789 | if (finish_file(s, WTV_TIMELINE, wctx->timeline_start_pos) < 0) |
| 790 | return -1; |
| 791 | |
| 792 | start_pos = avio_tell(pb); |
| 793 | write_table_entries_events(s); |
| 794 | if (finish_file(s, WTV_TIMELINE_TABLE_0_ENTRIES_EVENTS, start_pos) < 0) |
| 795 | return -1; |
| 796 | |
| 797 | start_pos = avio_tell(pb); |
| 798 | write_table_entries_attrib(s); |
| 799 | if (finish_file(s, WTV_TABLE_0_ENTRIES_LEGACY_ATTRIB, start_pos) < 0) |
| 800 | return -1; |
| 801 | |
| 802 | start_pos = avio_tell(pb); |
| 803 | write_table_redirector_legacy_attrib(s); |
| 804 | if (finish_file(s, WTV_TABLE_0_REDIRECTOR_LEGACY_ATTRIB, start_pos) < 0) |
| 805 | return -1; |
| 806 | |
| 807 | start_pos = avio_tell(pb); |
| 808 | write_table_entries_time(s); |
| 809 | if (finish_file(s, WTV_TABLE_0_ENTRIES_TIME, start_pos) < 0) |
| 810 | return -1; |
| 811 | |
| 812 | // write root table |
| 813 | sector_pos = avio_tell(pb); |
| 814 | root_size = write_root_table(s, sector_pos); |
| 815 | |
| 816 | file_end_pos = avio_tell(pb); |
| 817 | // update root value |
| 818 | avio_seek(pb, 0x30, SEEK_SET); |
| 819 | avio_wl32(pb, root_size); |
| 820 | avio_seek(pb, 4, SEEK_CUR); |
| 821 | avio_wl32(pb, sector_pos >> WTV_SECTOR_BITS); |
| 822 | avio_seek(pb, 0x5c, SEEK_SET); |
| 823 | avio_wl32(pb, file_end_pos >> WTV_SECTOR_BITS); |
| 824 | |
| 825 | avio_flush(pb); |
| 826 | |
| 827 | av_free(wctx->sp_pairs); |
| 828 | av_free(wctx->st_pairs); |
| 829 | av_free_packet(&wctx->thumbnail); |
| 830 | return 0; |
| 831 | } |
| 832 | |
| 833 | AVOutputFormat ff_wtv_muxer = { |
| 834 | .name = "wtv", |
| 835 | .long_name = NULL_IF_CONFIG_SMALL("Windows Television (WTV)"), |
| 836 | .extensions = "wtv", |
| 837 | .priv_data_size = sizeof(WtvContext), |
| 838 | .audio_codec = AV_CODEC_ID_AC3, |
| 839 | .video_codec = AV_CODEC_ID_MPEG2VIDEO, |
| 840 | .write_header = write_header, |
| 841 | .write_packet = write_packet, |
| 842 | .write_trailer = write_trailer, |
| 843 | .codec_tag = (const AVCodecTag* const []){ ff_codec_bmp_tags, |
| 844 | ff_codec_wav_tags, 0 }, |
| 845 | }; |