| 1 | /* |
| 2 | * Copyright (c) 2012 Martin Storsjo |
| 3 | * |
| 4 | * This file is part of FFmpeg. |
| 5 | * |
| 6 | * FFmpeg is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU Lesser General Public |
| 8 | * License as published by the Free Software Foundation; either |
| 9 | * version 2.1 of the License, or (at your option) any later version. |
| 10 | * |
| 11 | * FFmpeg is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 14 | * Lesser General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU Lesser General Public |
| 17 | * License along with FFmpeg; if not, write to the Free Software |
| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 19 | */ |
| 20 | |
| 21 | /* |
| 22 | * To create a simple file for smooth streaming: |
| 23 | * ffmpeg <normal input/transcoding options> -movflags frag_keyframe foo.ismv |
| 24 | * ismindex -n foo foo.ismv |
| 25 | * This step creates foo.ism and foo.ismc that is required by IIS for |
| 26 | * serving it. |
| 27 | * |
| 28 | * With -ismf, it also creates foo.ismf, which maps fragment names to |
| 29 | * start-end offsets in the ismv, for use in your own streaming server. |
| 30 | * |
| 31 | * By adding -path-prefix path/, the produced foo.ism will refer to the |
| 32 | * files foo.ismv as "path/foo.ismv" - the prefix for the generated ismc |
| 33 | * file can be set with the -ismc-prefix option similarly. |
| 34 | * |
| 35 | * To pre-split files for serving as static files by a web server without |
| 36 | * any extra server support, create the ismv file as above, and split it: |
| 37 | * ismindex -split foo.ismv |
| 38 | * This step creates a file Manifest and directories QualityLevel(...), |
| 39 | * that can be read directly by a smooth streaming player. |
| 40 | * |
| 41 | * The -output dir option can be used to request that output files |
| 42 | * (both .ism/.ismc, or Manifest/QualityLevels* when splitting) |
| 43 | * should be written to this directory instead of in the current directory. |
| 44 | * (The directory itself isn't created if it doesn't already exist.) |
| 45 | */ |
| 46 | |
| 47 | #include <stdio.h> |
| 48 | #include <string.h> |
| 49 | |
| 50 | #include "cmdutils.h" |
| 51 | |
| 52 | #include "libavformat/avformat.h" |
| 53 | #include "libavformat/isom.h" |
| 54 | #include "libavformat/os_support.h" |
| 55 | #include "libavutil/intreadwrite.h" |
| 56 | #include "libavutil/mathematics.h" |
| 57 | |
| 58 | static int usage(const char *argv0, int ret) |
| 59 | { |
| 60 | fprintf(stderr, "%s [-split] [-ismf] [-n basename] [-path-prefix prefix] " |
| 61 | "[-ismc-prefix prefix] [-output dir] file1 [file2] ...\n", argv0); |
| 62 | return ret; |
| 63 | } |
| 64 | |
| 65 | struct MoofOffset { |
| 66 | int64_t time; |
| 67 | int64_t offset; |
| 68 | int64_t duration; |
| 69 | }; |
| 70 | |
| 71 | struct Track { |
| 72 | const char *name; |
| 73 | int64_t duration; |
| 74 | int bitrate; |
| 75 | int track_id; |
| 76 | int is_audio, is_video; |
| 77 | int width, height; |
| 78 | int chunks; |
| 79 | int sample_rate, channels; |
| 80 | uint8_t *codec_private; |
| 81 | int codec_private_size; |
| 82 | struct MoofOffset *offsets; |
| 83 | int timescale; |
| 84 | const char *fourcc; |
| 85 | int blocksize; |
| 86 | int tag; |
| 87 | }; |
| 88 | |
| 89 | struct Tracks { |
| 90 | int nb_tracks; |
| 91 | int64_t duration; |
| 92 | struct Track **tracks; |
| 93 | int video_track, audio_track; |
| 94 | int nb_video_tracks, nb_audio_tracks; |
| 95 | }; |
| 96 | |
| 97 | static int expect_tag(int32_t got_tag, int32_t expected_tag) { |
| 98 | if (got_tag != expected_tag) { |
| 99 | char got_tag_str[4], expected_tag_str[4]; |
| 100 | AV_WB32(got_tag_str, got_tag); |
| 101 | AV_WB32(expected_tag_str, expected_tag); |
| 102 | fprintf(stderr, "wanted tag %.4s, got %.4s\n", expected_tag_str, |
| 103 | got_tag_str); |
| 104 | return -1; |
| 105 | } |
| 106 | return 0; |
| 107 | } |
| 108 | |
| 109 | static int copy_tag(AVIOContext *in, AVIOContext *out, int32_t tag_name) |
| 110 | { |
| 111 | int32_t size, tag; |
| 112 | |
| 113 | size = avio_rb32(in); |
| 114 | tag = avio_rb32(in); |
| 115 | avio_wb32(out, size); |
| 116 | avio_wb32(out, tag); |
| 117 | if (expect_tag(tag, tag_name) != 0) |
| 118 | return -1; |
| 119 | size -= 8; |
| 120 | while (size > 0) { |
| 121 | char buf[1024]; |
| 122 | int len = FFMIN(sizeof(buf), size); |
| 123 | int got; |
| 124 | if ((got = avio_read(in, buf, len)) != len) { |
| 125 | fprintf(stderr, "short read, wanted %d, got %d\n", len, got); |
| 126 | break; |
| 127 | } |
| 128 | avio_write(out, buf, len); |
| 129 | size -= len; |
| 130 | } |
| 131 | return 0; |
| 132 | } |
| 133 | |
| 134 | static int skip_tag(AVIOContext *in, int32_t tag_name) |
| 135 | { |
| 136 | int64_t pos = avio_tell(in); |
| 137 | int32_t size, tag; |
| 138 | |
| 139 | size = avio_rb32(in); |
| 140 | tag = avio_rb32(in); |
| 141 | if (expect_tag(tag, tag_name) != 0) |
| 142 | return -1; |
| 143 | avio_seek(in, pos + size, SEEK_SET); |
| 144 | return 0; |
| 145 | } |
| 146 | |
| 147 | static int write_fragment(const char *filename, AVIOContext *in) |
| 148 | { |
| 149 | AVIOContext *out = NULL; |
| 150 | int ret; |
| 151 | |
| 152 | if ((ret = avio_open2(&out, filename, AVIO_FLAG_WRITE, NULL, NULL)) < 0) { |
| 153 | char errbuf[100]; |
| 154 | av_strerror(ret, errbuf, sizeof(errbuf)); |
| 155 | fprintf(stderr, "Unable to open %s: %s\n", filename, errbuf); |
| 156 | return ret; |
| 157 | } |
| 158 | ret = copy_tag(in, out, MKBETAG('m', 'o', 'o', 'f')); |
| 159 | if (!ret) |
| 160 | ret = copy_tag(in, out, MKBETAG('m', 'd', 'a', 't')); |
| 161 | |
| 162 | avio_flush(out); |
| 163 | avio_close(out); |
| 164 | |
| 165 | return ret; |
| 166 | } |
| 167 | |
| 168 | static int skip_fragment(AVIOContext *in) |
| 169 | { |
| 170 | int ret; |
| 171 | ret = skip_tag(in, MKBETAG('m', 'o', 'o', 'f')); |
| 172 | if (!ret) |
| 173 | ret = skip_tag(in, MKBETAG('m', 'd', 'a', 't')); |
| 174 | return ret; |
| 175 | } |
| 176 | |
| 177 | static int write_fragments(struct Tracks *tracks, int start_index, |
| 178 | AVIOContext *in, const char *basename, |
| 179 | int split, int ismf, const char* output_prefix) |
| 180 | { |
| 181 | char dirname[2048], filename[2048], idxname[2048]; |
| 182 | int i, j, ret = 0, fragment_ret; |
| 183 | FILE* out = NULL; |
| 184 | |
| 185 | if (ismf) { |
| 186 | snprintf(idxname, sizeof(idxname), "%s%s.ismf", output_prefix, basename); |
| 187 | out = fopen(idxname, "w"); |
| 188 | if (!out) { |
| 189 | ret = AVERROR(errno); |
| 190 | perror(idxname); |
| 191 | goto fail; |
| 192 | } |
| 193 | } |
| 194 | for (i = start_index; i < tracks->nb_tracks; i++) { |
| 195 | struct Track *track = tracks->tracks[i]; |
| 196 | const char *type = track->is_video ? "video" : "audio"; |
| 197 | snprintf(dirname, sizeof(dirname), "%sQualityLevels(%d)", output_prefix, track->bitrate); |
| 198 | if (split) { |
| 199 | if (mkdir(dirname, 0777) == -1 && errno != EEXIST) { |
| 200 | ret = AVERROR(errno); |
| 201 | perror(dirname); |
| 202 | goto fail; |
| 203 | } |
| 204 | } |
| 205 | for (j = 0; j < track->chunks; j++) { |
| 206 | snprintf(filename, sizeof(filename), "%s/Fragments(%s=%"PRId64")", |
| 207 | dirname, type, track->offsets[j].time); |
| 208 | avio_seek(in, track->offsets[j].offset, SEEK_SET); |
| 209 | if (ismf) |
| 210 | fprintf(out, "%s %"PRId64, filename, avio_tell(in)); |
| 211 | if (split) |
| 212 | fragment_ret = write_fragment(filename, in); |
| 213 | else |
| 214 | fragment_ret = skip_fragment(in); |
| 215 | if (ismf) |
| 216 | fprintf(out, " %"PRId64"\n", avio_tell(in)); |
| 217 | if (fragment_ret != 0) { |
| 218 | fprintf(stderr, "failed fragment %d in track %d (%s)\n", j, |
| 219 | track->track_id, track->name); |
| 220 | ret = fragment_ret; |
| 221 | } |
| 222 | } |
| 223 | } |
| 224 | fail: |
| 225 | if (out) |
| 226 | fclose(out); |
| 227 | return ret; |
| 228 | } |
| 229 | |
| 230 | static int64_t read_trun_duration(AVIOContext *in, int default_duration, |
| 231 | int64_t end) |
| 232 | { |
| 233 | int64_t ret = 0; |
| 234 | int64_t pos; |
| 235 | int flags, i; |
| 236 | int entries; |
| 237 | avio_r8(in); /* version */ |
| 238 | flags = avio_rb24(in); |
| 239 | if (default_duration <= 0 && !(flags & MOV_TRUN_SAMPLE_DURATION)) { |
| 240 | fprintf(stderr, "No sample duration in trun flags\n"); |
| 241 | return -1; |
| 242 | } |
| 243 | entries = avio_rb32(in); |
| 244 | |
| 245 | if (flags & MOV_TRUN_DATA_OFFSET) avio_rb32(in); |
| 246 | if (flags & MOV_TRUN_FIRST_SAMPLE_FLAGS) avio_rb32(in); |
| 247 | |
| 248 | pos = avio_tell(in); |
| 249 | for (i = 0; i < entries && pos < end; i++) { |
| 250 | int sample_duration = default_duration; |
| 251 | if (flags & MOV_TRUN_SAMPLE_DURATION) sample_duration = avio_rb32(in); |
| 252 | if (flags & MOV_TRUN_SAMPLE_SIZE) avio_rb32(in); |
| 253 | if (flags & MOV_TRUN_SAMPLE_FLAGS) avio_rb32(in); |
| 254 | if (flags & MOV_TRUN_SAMPLE_CTS) avio_rb32(in); |
| 255 | if (sample_duration < 0) { |
| 256 | fprintf(stderr, "Negative sample duration %d\n", sample_duration); |
| 257 | return -1; |
| 258 | } |
| 259 | ret += sample_duration; |
| 260 | pos = avio_tell(in); |
| 261 | } |
| 262 | |
| 263 | return ret; |
| 264 | } |
| 265 | |
| 266 | static int64_t read_moof_duration(AVIOContext *in, int64_t offset) |
| 267 | { |
| 268 | int64_t ret = -1; |
| 269 | int32_t moof_size, size, tag; |
| 270 | int64_t pos = 0; |
| 271 | int default_duration = 0; |
| 272 | |
| 273 | avio_seek(in, offset, SEEK_SET); |
| 274 | moof_size = avio_rb32(in); |
| 275 | tag = avio_rb32(in); |
| 276 | if (expect_tag(tag, MKBETAG('m', 'o', 'o', 'f')) != 0) |
| 277 | goto fail; |
| 278 | while (pos < offset + moof_size) { |
| 279 | pos = avio_tell(in); |
| 280 | size = avio_rb32(in); |
| 281 | tag = avio_rb32(in); |
| 282 | if (tag == MKBETAG('t', 'r', 'a', 'f')) { |
| 283 | int64_t traf_pos = pos; |
| 284 | int64_t traf_size = size; |
| 285 | while (pos < traf_pos + traf_size) { |
| 286 | pos = avio_tell(in); |
| 287 | size = avio_rb32(in); |
| 288 | tag = avio_rb32(in); |
| 289 | if (tag == MKBETAG('t', 'f', 'h', 'd')) { |
| 290 | int flags = 0; |
| 291 | avio_r8(in); /* version */ |
| 292 | flags = avio_rb24(in); |
| 293 | avio_rb32(in); /* track_id */ |
| 294 | if (flags & MOV_TFHD_BASE_DATA_OFFSET) |
| 295 | avio_rb64(in); |
| 296 | if (flags & MOV_TFHD_STSD_ID) |
| 297 | avio_rb32(in); |
| 298 | if (flags & MOV_TFHD_DEFAULT_DURATION) |
| 299 | default_duration = avio_rb32(in); |
| 300 | } |
| 301 | if (tag == MKBETAG('t', 'r', 'u', 'n')) { |
| 302 | return read_trun_duration(in, default_duration, |
| 303 | pos + size); |
| 304 | } |
| 305 | avio_seek(in, pos + size, SEEK_SET); |
| 306 | } |
| 307 | fprintf(stderr, "Couldn't find trun\n"); |
| 308 | goto fail; |
| 309 | } |
| 310 | avio_seek(in, pos + size, SEEK_SET); |
| 311 | } |
| 312 | fprintf(stderr, "Couldn't find traf\n"); |
| 313 | |
| 314 | fail: |
| 315 | return ret; |
| 316 | } |
| 317 | |
| 318 | static int read_tfra(struct Tracks *tracks, int start_index, AVIOContext *f) |
| 319 | { |
| 320 | int ret = AVERROR_EOF, track_id; |
| 321 | int version, fieldlength, i, j; |
| 322 | int64_t pos = avio_tell(f); |
| 323 | uint32_t size = avio_rb32(f); |
| 324 | struct Track *track = NULL; |
| 325 | |
| 326 | if (avio_rb32(f) != MKBETAG('t', 'f', 'r', 'a')) |
| 327 | goto fail; |
| 328 | version = avio_r8(f); |
| 329 | avio_rb24(f); |
| 330 | track_id = avio_rb32(f); /* track id */ |
| 331 | for (i = start_index; i < tracks->nb_tracks && !track; i++) |
| 332 | if (tracks->tracks[i]->track_id == track_id) |
| 333 | track = tracks->tracks[i]; |
| 334 | if (!track) { |
| 335 | /* Ok, continue parsing the next atom */ |
| 336 | ret = 0; |
| 337 | goto fail; |
| 338 | } |
| 339 | fieldlength = avio_rb32(f); |
| 340 | track->chunks = avio_rb32(f); |
| 341 | track->offsets = av_mallocz_array(track->chunks, sizeof(*track->offsets)); |
| 342 | if (!track->offsets) { |
| 343 | ret = AVERROR(ENOMEM); |
| 344 | goto fail; |
| 345 | } |
| 346 | // The duration here is always the difference between consecutive |
| 347 | // start times. |
| 348 | for (i = 0; i < track->chunks; i++) { |
| 349 | if (version == 1) { |
| 350 | track->offsets[i].time = avio_rb64(f); |
| 351 | track->offsets[i].offset = avio_rb64(f); |
| 352 | } else { |
| 353 | track->offsets[i].time = avio_rb32(f); |
| 354 | track->offsets[i].offset = avio_rb32(f); |
| 355 | } |
| 356 | for (j = 0; j < ((fieldlength >> 4) & 3) + 1; j++) |
| 357 | avio_r8(f); |
| 358 | for (j = 0; j < ((fieldlength >> 2) & 3) + 1; j++) |
| 359 | avio_r8(f); |
| 360 | for (j = 0; j < ((fieldlength >> 0) & 3) + 1; j++) |
| 361 | avio_r8(f); |
| 362 | if (i > 0) |
| 363 | track->offsets[i - 1].duration = track->offsets[i].time - |
| 364 | track->offsets[i - 1].time; |
| 365 | } |
| 366 | if (track->chunks > 0) { |
| 367 | track->offsets[track->chunks - 1].duration = track->offsets[0].time + |
| 368 | track->duration - |
| 369 | track->offsets[track->chunks - 1].time; |
| 370 | } |
| 371 | // Now try and read the actual durations from the trun sample data. |
| 372 | for (i = 0; i < track->chunks; i++) { |
| 373 | int64_t duration = read_moof_duration(f, track->offsets[i].offset); |
| 374 | if (duration > 0 && abs(duration - track->offsets[i].duration) > 3) { |
| 375 | // 3 allows for integer duration to drift a few units, |
| 376 | // e.g., for 1/3 durations |
| 377 | track->offsets[i].duration = duration; |
| 378 | } |
| 379 | } |
| 380 | if (track->chunks > 0) { |
| 381 | if (track->offsets[track->chunks - 1].duration <= 0) { |
| 382 | fprintf(stderr, "Calculated last chunk duration for track %d " |
| 383 | "was non-positive (%"PRId64"), probably due to missing " |
| 384 | "fragments ", track->track_id, |
| 385 | track->offsets[track->chunks - 1].duration); |
| 386 | if (track->chunks > 1) { |
| 387 | track->offsets[track->chunks - 1].duration = |
| 388 | track->offsets[track->chunks - 2].duration; |
| 389 | } else { |
| 390 | track->offsets[track->chunks - 1].duration = 1; |
| 391 | } |
| 392 | fprintf(stderr, "corrected to %"PRId64"\n", |
| 393 | track->offsets[track->chunks - 1].duration); |
| 394 | track->duration = track->offsets[track->chunks - 1].time + |
| 395 | track->offsets[track->chunks - 1].duration - |
| 396 | track->offsets[0].time; |
| 397 | fprintf(stderr, "Track duration corrected to %"PRId64"\n", |
| 398 | track->duration); |
| 399 | } |
| 400 | } |
| 401 | ret = 0; |
| 402 | |
| 403 | fail: |
| 404 | avio_seek(f, pos + size, SEEK_SET); |
| 405 | return ret; |
| 406 | } |
| 407 | |
| 408 | static int read_mfra(struct Tracks *tracks, int start_index, |
| 409 | const char *file, int split, int ismf, |
| 410 | const char *basename, const char* output_prefix) |
| 411 | { |
| 412 | int err = 0; |
| 413 | const char* err_str = ""; |
| 414 | AVIOContext *f = NULL; |
| 415 | int32_t mfra_size; |
| 416 | |
| 417 | if ((err = avio_open2(&f, file, AVIO_FLAG_READ, NULL, NULL)) < 0) |
| 418 | goto fail; |
| 419 | avio_seek(f, avio_size(f) - 4, SEEK_SET); |
| 420 | mfra_size = avio_rb32(f); |
| 421 | avio_seek(f, -mfra_size, SEEK_CUR); |
| 422 | if (avio_rb32(f) != mfra_size) { |
| 423 | err = AVERROR_INVALIDDATA; |
| 424 | err_str = "mfra size mismatch"; |
| 425 | goto fail; |
| 426 | } |
| 427 | if (avio_rb32(f) != MKBETAG('m', 'f', 'r', 'a')) { |
| 428 | err = AVERROR_INVALIDDATA; |
| 429 | err_str = "mfra tag mismatch"; |
| 430 | goto fail; |
| 431 | } |
| 432 | while (!read_tfra(tracks, start_index, f)) { |
| 433 | /* Empty */ |
| 434 | } |
| 435 | |
| 436 | if (split || ismf) |
| 437 | err = write_fragments(tracks, start_index, f, basename, split, ismf, |
| 438 | output_prefix); |
| 439 | err_str = "error in write_fragments"; |
| 440 | |
| 441 | fail: |
| 442 | if (f) |
| 443 | avio_close(f); |
| 444 | if (err) |
| 445 | fprintf(stderr, "Unable to read the MFRA atom in %s (%s)\n", file, err_str); |
| 446 | return err; |
| 447 | } |
| 448 | |
| 449 | static int get_private_data(struct Track *track, AVCodecContext *codec) |
| 450 | { |
| 451 | track->codec_private_size = codec->extradata_size; |
| 452 | track->codec_private = av_mallocz(codec->extradata_size); |
| 453 | if (!track->codec_private) |
| 454 | return AVERROR(ENOMEM); |
| 455 | memcpy(track->codec_private, codec->extradata, codec->extradata_size); |
| 456 | return 0; |
| 457 | } |
| 458 | |
| 459 | static int get_video_private_data(struct Track *track, AVCodecContext *codec) |
| 460 | { |
| 461 | AVIOContext *io = NULL; |
| 462 | uint16_t sps_size, pps_size; |
| 463 | int err; |
| 464 | |
| 465 | if (codec->codec_id == AV_CODEC_ID_VC1) |
| 466 | return get_private_data(track, codec); |
| 467 | |
| 468 | if ((err = avio_open_dyn_buf(&io)) < 0) |
| 469 | goto fail; |
| 470 | err = AVERROR(EINVAL); |
| 471 | if (codec->extradata_size < 11 || codec->extradata[0] != 1) |
| 472 | goto fail; |
| 473 | sps_size = AV_RB16(&codec->extradata[6]); |
| 474 | if (11 + sps_size > codec->extradata_size) |
| 475 | goto fail; |
| 476 | avio_wb32(io, 0x00000001); |
| 477 | avio_write(io, &codec->extradata[8], sps_size); |
| 478 | pps_size = AV_RB16(&codec->extradata[9 + sps_size]); |
| 479 | if (11 + sps_size + pps_size > codec->extradata_size) |
| 480 | goto fail; |
| 481 | avio_wb32(io, 0x00000001); |
| 482 | avio_write(io, &codec->extradata[11 + sps_size], pps_size); |
| 483 | err = 0; |
| 484 | |
| 485 | fail: |
| 486 | track->codec_private_size = avio_close_dyn_buf(io, &track->codec_private); |
| 487 | return err; |
| 488 | } |
| 489 | |
| 490 | static int handle_file(struct Tracks *tracks, const char *file, int split, |
| 491 | int ismf, const char *basename, |
| 492 | const char* output_prefix) |
| 493 | { |
| 494 | AVFormatContext *ctx = NULL; |
| 495 | int err = 0, i, orig_tracks = tracks->nb_tracks; |
| 496 | char errbuf[50], *ptr; |
| 497 | struct Track *track; |
| 498 | |
| 499 | err = avformat_open_input(&ctx, file, NULL, NULL); |
| 500 | if (err < 0) { |
| 501 | av_strerror(err, errbuf, sizeof(errbuf)); |
| 502 | fprintf(stderr, "Unable to open %s: %s\n", file, errbuf); |
| 503 | return 1; |
| 504 | } |
| 505 | |
| 506 | err = avformat_find_stream_info(ctx, NULL); |
| 507 | if (err < 0) { |
| 508 | av_strerror(err, errbuf, sizeof(errbuf)); |
| 509 | fprintf(stderr, "Unable to identify %s: %s\n", file, errbuf); |
| 510 | goto fail; |
| 511 | } |
| 512 | |
| 513 | if (ctx->nb_streams < 1) { |
| 514 | fprintf(stderr, "No streams found in %s\n", file); |
| 515 | goto fail; |
| 516 | } |
| 517 | |
| 518 | for (i = 0; i < ctx->nb_streams; i++) { |
| 519 | struct Track **temp; |
| 520 | AVStream *st = ctx->streams[i]; |
| 521 | |
| 522 | if (st->codec->bit_rate == 0) { |
| 523 | fprintf(stderr, "Skipping track %d in %s as it has zero bitrate\n", |
| 524 | st->id, file); |
| 525 | continue; |
| 526 | } |
| 527 | |
| 528 | track = av_mallocz(sizeof(*track)); |
| 529 | if (!track) { |
| 530 | err = AVERROR(ENOMEM); |
| 531 | goto fail; |
| 532 | } |
| 533 | temp = av_realloc(tracks->tracks, |
| 534 | sizeof(*tracks->tracks) * (tracks->nb_tracks + 1)); |
| 535 | if (!temp) { |
| 536 | av_free(track); |
| 537 | err = AVERROR(ENOMEM); |
| 538 | goto fail; |
| 539 | } |
| 540 | tracks->tracks = temp; |
| 541 | tracks->tracks[tracks->nb_tracks] = track; |
| 542 | |
| 543 | track->name = file; |
| 544 | if ((ptr = strrchr(file, '/'))) |
| 545 | track->name = ptr + 1; |
| 546 | |
| 547 | track->bitrate = st->codec->bit_rate; |
| 548 | track->track_id = st->id; |
| 549 | track->timescale = st->time_base.den; |
| 550 | track->duration = st->duration; |
| 551 | track->is_audio = st->codec->codec_type == AVMEDIA_TYPE_AUDIO; |
| 552 | track->is_video = st->codec->codec_type == AVMEDIA_TYPE_VIDEO; |
| 553 | |
| 554 | if (!track->is_audio && !track->is_video) { |
| 555 | fprintf(stderr, |
| 556 | "Track %d in %s is neither video nor audio, skipping\n", |
| 557 | track->track_id, file); |
| 558 | av_freep(&tracks->tracks[tracks->nb_tracks]); |
| 559 | continue; |
| 560 | } |
| 561 | |
| 562 | tracks->duration = FFMAX(tracks->duration, |
| 563 | av_rescale_rnd(track->duration, AV_TIME_BASE, |
| 564 | track->timescale, AV_ROUND_UP)); |
| 565 | |
| 566 | if (track->is_audio) { |
| 567 | if (tracks->audio_track < 0) |
| 568 | tracks->audio_track = tracks->nb_tracks; |
| 569 | tracks->nb_audio_tracks++; |
| 570 | track->channels = st->codec->channels; |
| 571 | track->sample_rate = st->codec->sample_rate; |
| 572 | if (st->codec->codec_id == AV_CODEC_ID_AAC) { |
| 573 | track->fourcc = "AACL"; |
| 574 | track->tag = 255; |
| 575 | track->blocksize = 4; |
| 576 | } else if (st->codec->codec_id == AV_CODEC_ID_WMAPRO) { |
| 577 | track->fourcc = "WMAP"; |
| 578 | track->tag = st->codec->codec_tag; |
| 579 | track->blocksize = st->codec->block_align; |
| 580 | } |
| 581 | get_private_data(track, st->codec); |
| 582 | } |
| 583 | if (track->is_video) { |
| 584 | if (tracks->video_track < 0) |
| 585 | tracks->video_track = tracks->nb_tracks; |
| 586 | tracks->nb_video_tracks++; |
| 587 | track->width = st->codec->width; |
| 588 | track->height = st->codec->height; |
| 589 | if (st->codec->codec_id == AV_CODEC_ID_H264) |
| 590 | track->fourcc = "H264"; |
| 591 | else if (st->codec->codec_id == AV_CODEC_ID_VC1) |
| 592 | track->fourcc = "WVC1"; |
| 593 | get_video_private_data(track, st->codec); |
| 594 | } |
| 595 | |
| 596 | tracks->nb_tracks++; |
| 597 | } |
| 598 | |
| 599 | avformat_close_input(&ctx); |
| 600 | |
| 601 | err = read_mfra(tracks, orig_tracks, file, split, ismf, basename, |
| 602 | output_prefix); |
| 603 | |
| 604 | fail: |
| 605 | if (ctx) |
| 606 | avformat_close_input(&ctx); |
| 607 | return err; |
| 608 | } |
| 609 | |
| 610 | static void output_server_manifest(struct Tracks *tracks, const char *basename, |
| 611 | const char *output_prefix, |
| 612 | const char *path_prefix, |
| 613 | const char *ismc_prefix) |
| 614 | { |
| 615 | char filename[1000]; |
| 616 | FILE *out; |
| 617 | int i; |
| 618 | |
| 619 | snprintf(filename, sizeof(filename), "%s%s.ism", output_prefix, basename); |
| 620 | out = fopen(filename, "w"); |
| 621 | if (!out) { |
| 622 | perror(filename); |
| 623 | return; |
| 624 | } |
| 625 | fprintf(out, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n"); |
| 626 | fprintf(out, "<smil xmlns=\"http://www.w3.org/2001/SMIL20/Language\">\n"); |
| 627 | fprintf(out, "\t<head>\n"); |
| 628 | fprintf(out, "\t\t<meta name=\"clientManifestRelativePath\" " |
| 629 | "content=\"%s%s.ismc\" />\n", ismc_prefix, basename); |
| 630 | fprintf(out, "\t</head>\n"); |
| 631 | fprintf(out, "\t<body>\n"); |
| 632 | fprintf(out, "\t\t<switch>\n"); |
| 633 | for (i = 0; i < tracks->nb_tracks; i++) { |
| 634 | struct Track *track = tracks->tracks[i]; |
| 635 | const char *type = track->is_video ? "video" : "audio"; |
| 636 | fprintf(out, "\t\t\t<%s src=\"%s%s\" systemBitrate=\"%d\">\n", |
| 637 | type, path_prefix, track->name, track->bitrate); |
| 638 | fprintf(out, "\t\t\t\t<param name=\"trackID\" value=\"%d\" " |
| 639 | "valueType=\"data\" />\n", track->track_id); |
| 640 | fprintf(out, "\t\t\t</%s>\n", type); |
| 641 | } |
| 642 | fprintf(out, "\t\t</switch>\n"); |
| 643 | fprintf(out, "\t</body>\n"); |
| 644 | fprintf(out, "</smil>\n"); |
| 645 | fclose(out); |
| 646 | } |
| 647 | |
| 648 | static void print_track_chunks(FILE *out, struct Tracks *tracks, int main, |
| 649 | const char *type) |
| 650 | { |
| 651 | int i, j; |
| 652 | int64_t pos = 0; |
| 653 | struct Track *track = tracks->tracks[main]; |
| 654 | int should_print_time_mismatch = 1; |
| 655 | |
| 656 | for (i = 0; i < track->chunks; i++) { |
| 657 | for (j = main + 1; j < tracks->nb_tracks; j++) { |
| 658 | if (tracks->tracks[j]->is_audio == track->is_audio) { |
| 659 | if (track->offsets[i].duration != tracks->tracks[j]->offsets[i].duration) { |
| 660 | fprintf(stderr, "Mismatched duration of %s chunk %d in %s (%d) and %s (%d)\n", |
| 661 | type, i, track->name, main, tracks->tracks[j]->name, j); |
| 662 | should_print_time_mismatch = 1; |
| 663 | } |
| 664 | if (track->offsets[i].time != tracks->tracks[j]->offsets[i].time) { |
| 665 | if (should_print_time_mismatch) |
| 666 | fprintf(stderr, "Mismatched (start) time of %s chunk %d in %s (%d) and %s (%d)\n", |
| 667 | type, i, track->name, main, tracks->tracks[j]->name, j); |
| 668 | should_print_time_mismatch = 0; |
| 669 | } |
| 670 | } |
| 671 | } |
| 672 | fprintf(out, "\t\t<c n=\"%d\" d=\"%"PRId64"\" ", |
| 673 | i, track->offsets[i].duration); |
| 674 | if (pos != track->offsets[i].time) { |
| 675 | fprintf(out, "t=\"%"PRId64"\" ", track->offsets[i].time); |
| 676 | pos = track->offsets[i].time; |
| 677 | } |
| 678 | pos += track->offsets[i].duration; |
| 679 | fprintf(out, "/>\n"); |
| 680 | } |
| 681 | } |
| 682 | |
| 683 | static void output_client_manifest(struct Tracks *tracks, const char *basename, |
| 684 | const char *output_prefix, int split) |
| 685 | { |
| 686 | char filename[1000]; |
| 687 | FILE *out; |
| 688 | int i, j; |
| 689 | |
| 690 | if (split) |
| 691 | snprintf(filename, sizeof(filename), "%sManifest", output_prefix); |
| 692 | else |
| 693 | snprintf(filename, sizeof(filename), "%s%s.ismc", output_prefix, basename); |
| 694 | out = fopen(filename, "w"); |
| 695 | if (!out) { |
| 696 | perror(filename); |
| 697 | return; |
| 698 | } |
| 699 | fprintf(out, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n"); |
| 700 | fprintf(out, "<SmoothStreamingMedia MajorVersion=\"2\" MinorVersion=\"0\" " |
| 701 | "Duration=\"%"PRId64 "\">\n", tracks->duration * 10); |
| 702 | if (tracks->video_track >= 0) { |
| 703 | struct Track *track = tracks->tracks[tracks->video_track]; |
| 704 | struct Track *first_track = track; |
| 705 | int index = 0; |
| 706 | fprintf(out, |
| 707 | "\t<StreamIndex Type=\"video\" QualityLevels=\"%d\" " |
| 708 | "Chunks=\"%d\" " |
| 709 | "Url=\"QualityLevels({bitrate})/Fragments(video={start time})\">\n", |
| 710 | tracks->nb_video_tracks, track->chunks); |
| 711 | for (i = 0; i < tracks->nb_tracks; i++) { |
| 712 | track = tracks->tracks[i]; |
| 713 | if (!track->is_video) |
| 714 | continue; |
| 715 | fprintf(out, |
| 716 | "\t\t<QualityLevel Index=\"%d\" Bitrate=\"%d\" " |
| 717 | "FourCC=\"%s\" MaxWidth=\"%d\" MaxHeight=\"%d\" " |
| 718 | "CodecPrivateData=\"", |
| 719 | index, track->bitrate, track->fourcc, track->width, track->height); |
| 720 | for (j = 0; j < track->codec_private_size; j++) |
| 721 | fprintf(out, "%02X", track->codec_private[j]); |
| 722 | fprintf(out, "\" />\n"); |
| 723 | index++; |
| 724 | if (track->chunks != first_track->chunks) |
| 725 | fprintf(stderr, "Mismatched number of video chunks in %s (id: %d, chunks %d) and %s (id: %d, chunks %d)\n", |
| 726 | track->name, track->track_id, track->chunks, first_track->name, first_track->track_id, first_track->chunks); |
| 727 | } |
| 728 | print_track_chunks(out, tracks, tracks->video_track, "video"); |
| 729 | fprintf(out, "\t</StreamIndex>\n"); |
| 730 | } |
| 731 | if (tracks->audio_track >= 0) { |
| 732 | struct Track *track = tracks->tracks[tracks->audio_track]; |
| 733 | struct Track *first_track = track; |
| 734 | int index = 0; |
| 735 | fprintf(out, |
| 736 | "\t<StreamIndex Type=\"audio\" QualityLevels=\"%d\" " |
| 737 | "Chunks=\"%d\" " |
| 738 | "Url=\"QualityLevels({bitrate})/Fragments(audio={start time})\">\n", |
| 739 | tracks->nb_audio_tracks, track->chunks); |
| 740 | for (i = 0; i < tracks->nb_tracks; i++) { |
| 741 | track = tracks->tracks[i]; |
| 742 | if (!track->is_audio) |
| 743 | continue; |
| 744 | fprintf(out, |
| 745 | "\t\t<QualityLevel Index=\"%d\" Bitrate=\"%d\" " |
| 746 | "FourCC=\"%s\" SamplingRate=\"%d\" Channels=\"%d\" " |
| 747 | "BitsPerSample=\"16\" PacketSize=\"%d\" " |
| 748 | "AudioTag=\"%d\" CodecPrivateData=\"", |
| 749 | index, track->bitrate, track->fourcc, track->sample_rate, |
| 750 | track->channels, track->blocksize, track->tag); |
| 751 | for (j = 0; j < track->codec_private_size; j++) |
| 752 | fprintf(out, "%02X", track->codec_private[j]); |
| 753 | fprintf(out, "\" />\n"); |
| 754 | index++; |
| 755 | if (track->chunks != first_track->chunks) |
| 756 | fprintf(stderr, "Mismatched number of audio chunks in %s and %s\n", |
| 757 | track->name, first_track->name); |
| 758 | } |
| 759 | print_track_chunks(out, tracks, tracks->audio_track, "audio"); |
| 760 | fprintf(out, "\t</StreamIndex>\n"); |
| 761 | } |
| 762 | fprintf(out, "</SmoothStreamingMedia>\n"); |
| 763 | fclose(out); |
| 764 | } |
| 765 | |
| 766 | static void clean_tracks(struct Tracks *tracks) |
| 767 | { |
| 768 | int i; |
| 769 | for (i = 0; i < tracks->nb_tracks; i++) { |
| 770 | av_freep(&tracks->tracks[i]->codec_private); |
| 771 | av_freep(&tracks->tracks[i]->offsets); |
| 772 | av_freep(&tracks->tracks[i]); |
| 773 | } |
| 774 | av_freep(&tracks->tracks); |
| 775 | tracks->nb_tracks = 0; |
| 776 | } |
| 777 | |
| 778 | int main(int argc, char **argv) |
| 779 | { |
| 780 | const char *basename = NULL; |
| 781 | const char *path_prefix = "", *ismc_prefix = ""; |
| 782 | const char *output_prefix = ""; |
| 783 | char output_prefix_buf[2048]; |
| 784 | int split = 0, ismf = 0, i; |
| 785 | struct Tracks tracks = { 0, .video_track = -1, .audio_track = -1 }; |
| 786 | |
| 787 | av_register_all(); |
| 788 | |
| 789 | for (i = 1; i < argc; i++) { |
| 790 | if (!strcmp(argv[i], "-n")) { |
| 791 | basename = argv[i + 1]; |
| 792 | i++; |
| 793 | } else if (!strcmp(argv[i], "-path-prefix")) { |
| 794 | path_prefix = argv[i + 1]; |
| 795 | i++; |
| 796 | } else if (!strcmp(argv[i], "-ismc-prefix")) { |
| 797 | ismc_prefix = argv[i + 1]; |
| 798 | i++; |
| 799 | } else if (!strcmp(argv[i], "-output")) { |
| 800 | output_prefix = argv[i + 1]; |
| 801 | i++; |
| 802 | if (output_prefix[strlen(output_prefix) - 1] != '/') { |
| 803 | snprintf(output_prefix_buf, sizeof(output_prefix_buf), |
| 804 | "%s/", output_prefix); |
| 805 | output_prefix = output_prefix_buf; |
| 806 | } |
| 807 | } else if (!strcmp(argv[i], "-split")) { |
| 808 | split = 1; |
| 809 | } else if (!strcmp(argv[i], "-ismf")) { |
| 810 | ismf = 1; |
| 811 | } else if (argv[i][0] == '-') { |
| 812 | return usage(argv[0], 1); |
| 813 | } else { |
| 814 | if (!basename) |
| 815 | ismf = 0; |
| 816 | if (handle_file(&tracks, argv[i], split, ismf, |
| 817 | basename, output_prefix)) |
| 818 | return 1; |
| 819 | } |
| 820 | } |
| 821 | if (!tracks.nb_tracks || (!basename && !split)) |
| 822 | return usage(argv[0], 1); |
| 823 | |
| 824 | if (!split) |
| 825 | output_server_manifest(&tracks, basename, output_prefix, |
| 826 | path_prefix, ismc_prefix); |
| 827 | output_client_manifest(&tracks, basename, output_prefix, split); |
| 828 | |
| 829 | clean_tracks(&tracks); |
| 830 | |
| 831 | return 0; |
| 832 | } |