Tristan Matthews | 0a329cc | 2013-07-17 13:20:14 -0400 | [diff] [blame] | 1 | /* $Id$ */ |
| 2 | /* |
| 3 | * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com) |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 18 | */ |
| 19 | |
| 20 | /** |
| 21 | * Default file player/writer buffer size. |
| 22 | */ |
| 23 | #include <pjmedia/avi_stream.h> |
| 24 | #include <pjmedia/avi.h> |
| 25 | #include <pjmedia/errno.h> |
| 26 | #include <pjmedia/wave.h> |
| 27 | #include <pj/assert.h> |
| 28 | #include <pj/file_access.h> |
| 29 | #include <pj/file_io.h> |
| 30 | #include <pj/log.h> |
| 31 | #include <pj/pool.h> |
| 32 | #include <pj/string.h> |
| 33 | |
| 34 | |
| 35 | #if defined(PJMEDIA_HAS_VIDEO) && (PJMEDIA_HAS_VIDEO != 0) |
| 36 | |
| 37 | |
| 38 | #define THIS_FILE "avi_player.c" |
| 39 | |
| 40 | #define AVIF_MUSTUSEINDEX 0x00000020 |
| 41 | #define AVIF_ISINTERLEAVED 0x00000100 |
| 42 | #define AVISF_DISABLED 0x00000001 |
| 43 | #define AVISF_VIDEO_PALCHANGES 0x00010000 |
| 44 | |
| 45 | #define AVI_EOF 0xFFEEFFEE |
| 46 | |
| 47 | #define COMPARE_TAG(doc_tag, tag) (doc_tag == *((pj_uint32_t *)avi_tags[tag])) |
| 48 | |
| 49 | #define SIGNATURE PJMEDIA_SIG_PORT_VID_AVI_PLAYER |
| 50 | |
| 51 | #define VIDEO_CLOCK_RATE 90000 |
| 52 | |
| 53 | #if 0 |
| 54 | # define TRACE_(x) PJ_LOG(4,x) |
| 55 | #else |
| 56 | # define TRACE_(x) |
| 57 | #endif |
| 58 | |
| 59 | #if defined(PJ_IS_BIG_ENDIAN) && PJ_IS_BIG_ENDIAN!=0 |
| 60 | static void data_to_host(void *data, pj_uint8_t bits, unsigned count) |
| 61 | { |
| 62 | unsigned i; |
| 63 | |
| 64 | count /= (bits == 32? 4 : 2); |
| 65 | |
| 66 | if (bits == 32) { |
| 67 | pj_int32_t *data32 = (pj_int32_t *)data; |
| 68 | for (i=0; i<count; ++i) |
| 69 | data32[i] = pj_swap32(data32[i]); |
| 70 | } else { |
| 71 | pj_int16_t *data16 = (pj_int16_t *)data; |
| 72 | for (i=0; i<count; ++i) |
| 73 | data16[i] = pj_swap16(data16[i]); |
| 74 | } |
| 75 | |
| 76 | } |
| 77 | static void data_to_host2(void *data, pj_uint8_t nsizes, |
| 78 | pj_uint8_t *sizes) |
| 79 | { |
| 80 | unsigned i; |
| 81 | pj_int8_t *datap = (pj_int8_t *)data; |
| 82 | for (i = 0; i < nsizes; i++) { |
| 83 | data_to_host(datap, 32, sizes[i]); |
| 84 | datap += sizes[i++]; |
| 85 | if (i >= nsizes) |
| 86 | break; |
| 87 | data_to_host(datap, 16, sizes[i]); |
| 88 | datap += sizes[i]; |
| 89 | } |
| 90 | } |
| 91 | #else |
| 92 | # define data_to_host(data, bits, count) |
| 93 | # define data_to_host2(data, nsizes, sizes) |
| 94 | #endif |
| 95 | |
| 96 | typedef struct avi_fmt_info |
| 97 | { |
| 98 | pjmedia_format_id fmt_id; |
| 99 | pjmedia_format_id eff_fmt_id; |
| 100 | } avi_fmt_info; |
| 101 | |
| 102 | static avi_fmt_info avi_fmts[] = |
| 103 | { |
| 104 | {PJMEDIA_FORMAT_MJPEG}, {PJMEDIA_FORMAT_H264}, |
| 105 | {PJMEDIA_FORMAT_UYVY}, {PJMEDIA_FORMAT_YUY2}, |
| 106 | {PJMEDIA_FORMAT_IYUV}, {PJMEDIA_FORMAT_I420}, |
| 107 | {PJMEDIA_FORMAT_DIB}, {PJMEDIA_FORMAT_RGB24}, |
| 108 | {PJMEDIA_FORMAT_RGB32}, |
| 109 | {PJMEDIA_FORMAT_PACK('X','V','I','D'), PJMEDIA_FORMAT_MPEG4}, |
| 110 | {PJMEDIA_FORMAT_PACK('x','v','i','d'), PJMEDIA_FORMAT_MPEG4}, |
| 111 | {PJMEDIA_FORMAT_PACK('D','I','V','X'), PJMEDIA_FORMAT_MPEG4}, |
| 112 | {PJMEDIA_FORMAT_PACK('F','M','P','4'), PJMEDIA_FORMAT_MPEG4}, |
| 113 | {PJMEDIA_FORMAT_PACK('D','X','5','0'), PJMEDIA_FORMAT_MPEG4} |
| 114 | }; |
| 115 | |
| 116 | struct pjmedia_avi_streams |
| 117 | { |
| 118 | unsigned num_streams; |
| 119 | pjmedia_port **streams; |
| 120 | }; |
| 121 | |
| 122 | struct avi_reader_port |
| 123 | { |
| 124 | pjmedia_port base; |
| 125 | unsigned stream_id; |
| 126 | unsigned options; |
| 127 | pjmedia_format_id fmt_id; |
| 128 | unsigned usec_per_frame; |
| 129 | pj_uint16_t bits_per_sample; |
| 130 | pj_bool_t eof; |
| 131 | pj_off_t fsize; |
| 132 | pj_off_t start_data; |
| 133 | pj_uint8_t pad; |
| 134 | pj_oshandle_t fd; |
| 135 | pj_ssize_t size_left; |
| 136 | pj_timestamp next_ts; |
| 137 | |
| 138 | pj_status_t (*cb)(pjmedia_port*, void*); |
| 139 | }; |
| 140 | |
| 141 | |
| 142 | static pj_status_t avi_get_frame(pjmedia_port *this_port, |
| 143 | pjmedia_frame *frame); |
| 144 | static pj_status_t avi_on_destroy(pjmedia_port *this_port); |
| 145 | |
| 146 | static struct avi_reader_port *create_avi_port(pj_pool_t *pool) |
| 147 | { |
| 148 | const pj_str_t name = pj_str("file"); |
| 149 | struct avi_reader_port *port; |
| 150 | |
| 151 | port = PJ_POOL_ZALLOC_T(pool, struct avi_reader_port); |
| 152 | if (!port) |
| 153 | return NULL; |
| 154 | |
| 155 | /* Put in default values. |
| 156 | * These will be overriden once the file is read. |
| 157 | */ |
| 158 | pjmedia_port_info_init(&port->base.info, &name, SIGNATURE, |
| 159 | 8000, 1, 16, 80); |
| 160 | |
| 161 | port->fd = (pj_oshandle_t)(pj_ssize_t)-1; |
| 162 | port->base.get_frame = &avi_get_frame; |
| 163 | port->base.on_destroy = &avi_on_destroy; |
| 164 | |
| 165 | return port; |
| 166 | } |
| 167 | |
| 168 | #define file_read(fd, data, size) file_read2(fd, data, size, 32) |
| 169 | #define file_read2(fd, data, size, bits) file_read3(fd, data, size, bits, NULL) |
| 170 | |
| 171 | static pj_status_t file_read3(pj_oshandle_t fd, void *data, pj_ssize_t size, |
| 172 | pj_uint16_t bits, pj_ssize_t *psz_read) |
| 173 | { |
| 174 | pj_ssize_t size_read = size, size_to_read = size; |
| 175 | pj_status_t status = pj_file_read(fd, data, &size_read); |
| 176 | if (status != PJ_SUCCESS) |
| 177 | return status; |
| 178 | |
| 179 | /* Normalize AVI header fields values from little-endian to host |
| 180 | * byte order. |
| 181 | */ |
| 182 | if (bits > 0) |
| 183 | data_to_host(data, bits, size_read); |
| 184 | |
| 185 | if (size_read != size_to_read) { |
| 186 | if (psz_read) |
| 187 | *psz_read = size_read; |
| 188 | return AVI_EOF; |
| 189 | } |
| 190 | |
| 191 | return status; |
| 192 | } |
| 193 | |
| 194 | /* |
| 195 | * Create AVI player port. |
| 196 | */ |
| 197 | PJ_DEF(pj_status_t) |
| 198 | pjmedia_avi_player_create_streams(pj_pool_t *pool, |
| 199 | const char *filename, |
| 200 | unsigned options, |
| 201 | pjmedia_avi_streams **p_streams) |
| 202 | { |
| 203 | pjmedia_avi_hdr avi_hdr; |
| 204 | struct avi_reader_port *fport[PJMEDIA_AVI_MAX_NUM_STREAMS]; |
| 205 | pj_off_t pos; |
| 206 | unsigned i, nstr = 0; |
| 207 | pj_status_t status = PJ_SUCCESS; |
| 208 | |
| 209 | /* Check arguments. */ |
| 210 | PJ_ASSERT_RETURN(pool && filename && p_streams, PJ_EINVAL); |
| 211 | |
| 212 | /* Check the file really exists. */ |
| 213 | if (!pj_file_exists(filename)) { |
| 214 | return PJ_ENOTFOUND; |
| 215 | } |
| 216 | |
| 217 | /* Create fport instance. */ |
| 218 | fport[0] = create_avi_port(pool); |
| 219 | if (!fport[0]) { |
| 220 | return PJ_ENOMEM; |
| 221 | } |
| 222 | |
| 223 | /* Get the file size. */ |
| 224 | fport[0]->fsize = pj_file_size(filename); |
| 225 | |
| 226 | /* Size must be more than AVI header size */ |
| 227 | if (fport[0]->fsize <= sizeof(riff_hdr_t) + sizeof(avih_hdr_t) + |
| 228 | sizeof(strl_hdr_t)) |
| 229 | { |
| 230 | return PJMEDIA_EINVALIMEDIATYPE; |
| 231 | } |
| 232 | |
| 233 | /* Open file. */ |
| 234 | status = pj_file_open(pool, filename, PJ_O_RDONLY, &fport[0]->fd); |
| 235 | if (status != PJ_SUCCESS) |
| 236 | return status; |
| 237 | |
| 238 | /* Read the RIFF + AVIH header. */ |
| 239 | status = file_read(fport[0]->fd, &avi_hdr, |
| 240 | sizeof(riff_hdr_t) + sizeof(avih_hdr_t)); |
| 241 | if (status != PJ_SUCCESS) |
| 242 | goto on_error; |
| 243 | |
| 244 | /* Validate AVI file. */ |
| 245 | if (!COMPARE_TAG(avi_hdr.riff_hdr.riff, PJMEDIA_AVI_RIFF_TAG) || |
| 246 | !COMPARE_TAG(avi_hdr.riff_hdr.avi, PJMEDIA_AVI_AVI_TAG) || |
| 247 | !COMPARE_TAG(avi_hdr.avih_hdr.list_tag, PJMEDIA_AVI_LIST_TAG) || |
| 248 | !COMPARE_TAG(avi_hdr.avih_hdr.hdrl_tag, PJMEDIA_AVI_HDRL_TAG) || |
| 249 | !COMPARE_TAG(avi_hdr.avih_hdr.avih, PJMEDIA_AVI_AVIH_TAG)) |
| 250 | { |
| 251 | status = PJMEDIA_EINVALIMEDIATYPE; |
| 252 | goto on_error; |
| 253 | } |
| 254 | |
| 255 | PJ_LOG(5, (THIS_FILE, "The AVI file has %d streams.", |
| 256 | avi_hdr.avih_hdr.num_streams)); |
| 257 | |
| 258 | /* Unsupported AVI format. */ |
| 259 | if (avi_hdr.avih_hdr.num_streams > PJMEDIA_AVI_MAX_NUM_STREAMS) { |
| 260 | status = PJMEDIA_EAVIUNSUPP; |
| 261 | goto on_error; |
| 262 | } |
| 263 | |
| 264 | /** |
| 265 | * TODO: Possibly unsupported AVI format. |
| 266 | * If you encounter this warning, verify whether the avi player |
| 267 | * is working properly. |
| 268 | */ |
| 269 | if (avi_hdr.avih_hdr.flags & AVIF_MUSTUSEINDEX || |
| 270 | avi_hdr.avih_hdr.pad > 1) |
| 271 | { |
| 272 | PJ_LOG(3, (THIS_FILE, "Warning!!! Possibly unsupported AVI format: " |
| 273 | "flags:%d, pad:%d", avi_hdr.avih_hdr.flags, |
| 274 | avi_hdr.avih_hdr.pad)); |
| 275 | } |
| 276 | |
| 277 | /* Read the headers of each stream. */ |
| 278 | for (i = 0; i < avi_hdr.avih_hdr.num_streams; i++) { |
| 279 | pj_size_t elem = 0; |
| 280 | pj_ssize_t size_to_read; |
| 281 | |
| 282 | /* Read strl header */ |
| 283 | status = file_read(fport[0]->fd, &avi_hdr.strl_hdr[i], |
| 284 | sizeof(strl_hdr_t)); |
| 285 | if (status != PJ_SUCCESS) |
| 286 | goto on_error; |
| 287 | |
| 288 | elem = COMPARE_TAG(avi_hdr.strl_hdr[i].data_type, |
| 289 | PJMEDIA_AVI_VIDS_TAG) ? |
| 290 | sizeof(strf_video_hdr_t) : |
| 291 | COMPARE_TAG(avi_hdr.strl_hdr[i].data_type, |
| 292 | PJMEDIA_AVI_AUDS_TAG) ? |
| 293 | sizeof(strf_audio_hdr_t) : 0; |
| 294 | |
| 295 | /* Read strf header */ |
| 296 | status = file_read2(fport[0]->fd, &avi_hdr.strf_hdr[i], |
| 297 | elem, 0); |
| 298 | if (status != PJ_SUCCESS) |
| 299 | goto on_error; |
| 300 | |
| 301 | /* Normalize the endian */ |
| 302 | if (elem == sizeof(strf_video_hdr_t)) |
| 303 | data_to_host2(&avi_hdr.strf_hdr[i], |
| 304 | sizeof(strf_video_hdr_sizes)/ |
| 305 | sizeof(strf_video_hdr_sizes[0]), |
| 306 | strf_video_hdr_sizes); |
| 307 | else if (elem == sizeof(strf_audio_hdr_t)) |
| 308 | data_to_host2(&avi_hdr.strf_hdr[i], |
| 309 | sizeof(strf_audio_hdr_sizes)/ |
| 310 | sizeof(strf_audio_hdr_sizes[0]), |
| 311 | strf_audio_hdr_sizes); |
| 312 | |
| 313 | /* Skip the remainder of the header */ |
| 314 | size_to_read = avi_hdr.strl_hdr[i].list_sz - (sizeof(strl_hdr_t) - |
| 315 | 8) - elem; |
| 316 | status = pj_file_setpos(fport[0]->fd, size_to_read, PJ_SEEK_CUR); |
| 317 | if (status != PJ_SUCCESS) { |
| 318 | goto on_error; |
| 319 | } |
| 320 | } |
| 321 | |
| 322 | /* Finish reading the AVIH header */ |
| 323 | status = pj_file_setpos(fport[0]->fd, avi_hdr.avih_hdr.list_sz + |
| 324 | sizeof(riff_hdr_t) + 8, PJ_SEEK_SET); |
| 325 | if (status != PJ_SUCCESS) { |
| 326 | goto on_error; |
| 327 | } |
| 328 | |
| 329 | /* Skip any JUNK or LIST INFO until we get MOVI tag */ |
| 330 | do { |
| 331 | pjmedia_avi_subchunk ch; |
| 332 | int read = 0; |
| 333 | |
| 334 | status = file_read(fport[0]->fd, &ch, sizeof(pjmedia_avi_subchunk)); |
| 335 | if (status != PJ_SUCCESS) { |
| 336 | goto on_error; |
| 337 | } |
| 338 | |
| 339 | if (COMPARE_TAG(ch.id, PJMEDIA_AVI_LIST_TAG)) |
| 340 | { |
| 341 | read = 4; |
| 342 | status = file_read(fport[0]->fd, &ch, read); |
| 343 | if (COMPARE_TAG(ch.id, PJMEDIA_AVI_MOVI_TAG)) |
| 344 | break; |
| 345 | } |
| 346 | |
| 347 | status = pj_file_setpos(fport[0]->fd, ch.len-read, PJ_SEEK_CUR); |
| 348 | if (status != PJ_SUCCESS) { |
| 349 | goto on_error; |
| 350 | } |
| 351 | } while(1); |
| 352 | |
| 353 | status = pj_file_getpos(fport[0]->fd, &pos); |
| 354 | if (status != PJ_SUCCESS) |
| 355 | goto on_error; |
| 356 | |
| 357 | for (i = 0, nstr = 0; i < avi_hdr.avih_hdr.num_streams; i++) { |
| 358 | pjmedia_format_id fmt_id; |
| 359 | |
| 360 | /* Skip non-audio, non-video, or disabled streams) */ |
| 361 | if ((!COMPARE_TAG(avi_hdr.strl_hdr[i].data_type, |
| 362 | PJMEDIA_AVI_VIDS_TAG) && |
| 363 | !COMPARE_TAG(avi_hdr.strl_hdr[i].data_type, |
| 364 | PJMEDIA_AVI_AUDS_TAG)) || |
| 365 | avi_hdr.strl_hdr[i].flags & AVISF_DISABLED) |
| 366 | { |
| 367 | continue; |
| 368 | } |
| 369 | |
| 370 | if (COMPARE_TAG(avi_hdr.strl_hdr[i].data_type, |
| 371 | PJMEDIA_AVI_VIDS_TAG)) |
| 372 | { |
| 373 | int j; |
| 374 | |
| 375 | if (avi_hdr.strl_hdr[i].flags & AVISF_VIDEO_PALCHANGES) { |
| 376 | PJ_LOG(4, (THIS_FILE, "Unsupported video stream")); |
| 377 | continue; |
| 378 | } |
| 379 | |
| 380 | fmt_id = avi_hdr.strl_hdr[i].codec; |
| 381 | for (j = sizeof(avi_fmts)/sizeof(avi_fmts[0])-1; j >= 0; j--) { |
| 382 | /* Check supported video formats here */ |
| 383 | if (fmt_id == avi_fmts[j].fmt_id) { |
| 384 | if (avi_fmts[j].eff_fmt_id) |
| 385 | fmt_id = avi_fmts[j].eff_fmt_id; |
| 386 | break; |
| 387 | } |
| 388 | } |
| 389 | |
| 390 | if (j < 0) { |
| 391 | PJ_LOG(4, (THIS_FILE, "Unsupported video stream")); |
| 392 | continue; |
| 393 | } |
| 394 | } else { |
| 395 | /* Check supported audio formats here */ |
| 396 | if ((avi_hdr.strl_hdr[i].codec != PJMEDIA_FORMAT_PCM && |
| 397 | avi_hdr.strl_hdr[i].codec != PJMEDIA_FORMAT_ALAW && |
| 398 | avi_hdr.strl_hdr[i].codec != PJMEDIA_FORMAT_ULAW && |
| 399 | avi_hdr.strl_hdr[i].codec != PJMEDIA_WAVE_FMT_TAG_PCM) || |
| 400 | avi_hdr.strf_hdr[i].strf_audio_hdr.bits_per_sample != 16) |
| 401 | { |
| 402 | PJ_LOG(4, (THIS_FILE, "Unsupported audio stream")); |
| 403 | continue; |
| 404 | } |
| 405 | /* Normalize format ID */ |
| 406 | fmt_id = avi_hdr.strl_hdr[i].codec; |
| 407 | if (avi_hdr.strl_hdr[i].codec == PJMEDIA_WAVE_FMT_TAG_PCM) |
| 408 | fmt_id = PJMEDIA_FORMAT_PCM; |
| 409 | } |
| 410 | |
| 411 | if (nstr > 0) { |
| 412 | /* Create fport instance. */ |
| 413 | fport[nstr] = create_avi_port(pool); |
| 414 | if (!fport[nstr]) { |
| 415 | status = PJ_ENOMEM; |
| 416 | goto on_error; |
| 417 | } |
| 418 | |
| 419 | /* Open file. */ |
| 420 | status = pj_file_open(pool, filename, PJ_O_RDONLY, |
| 421 | &fport[nstr]->fd); |
| 422 | if (status != PJ_SUCCESS) |
| 423 | goto on_error; |
| 424 | |
| 425 | /* Set the file position */ |
| 426 | status = pj_file_setpos(fport[nstr]->fd, pos, PJ_SEEK_SET); |
| 427 | if (status != PJ_SUCCESS) { |
| 428 | goto on_error; |
| 429 | } |
| 430 | } |
| 431 | |
| 432 | fport[nstr]->stream_id = i; |
| 433 | fport[nstr]->fmt_id = fmt_id; |
| 434 | |
| 435 | nstr++; |
| 436 | } |
| 437 | |
| 438 | if (nstr == 0) { |
| 439 | status = PJMEDIA_EAVIUNSUPP; |
| 440 | goto on_error; |
| 441 | } |
| 442 | |
| 443 | for (i = 0; i < nstr; i++) { |
| 444 | strl_hdr_t *strl_hdr = &avi_hdr.strl_hdr[fport[i]->stream_id]; |
| 445 | |
| 446 | /* Initialize */ |
| 447 | fport[i]->options = options; |
| 448 | fport[i]->fsize = fport[0]->fsize; |
| 449 | /* Current file position now points to start of data */ |
| 450 | fport[i]->start_data = pos; |
| 451 | |
| 452 | if (COMPARE_TAG(strl_hdr->data_type, PJMEDIA_AVI_VIDS_TAG)) { |
| 453 | strf_video_hdr_t *strf_hdr = |
| 454 | &avi_hdr.strf_hdr[fport[i]->stream_id].strf_video_hdr; |
| 455 | const pjmedia_video_format_info *vfi; |
| 456 | |
| 457 | vfi = pjmedia_get_video_format_info( |
| 458 | pjmedia_video_format_mgr_instance(), |
| 459 | strl_hdr->codec); |
| 460 | |
| 461 | fport[i]->bits_per_sample = (vfi ? vfi->bpp : 0); |
| 462 | fport[i]->usec_per_frame = avi_hdr.avih_hdr.usec_per_frame; |
| 463 | pjmedia_format_init_video(&fport[i]->base.info.fmt, |
| 464 | fport[i]->fmt_id, |
| 465 | strf_hdr->biWidth, |
| 466 | strf_hdr->biHeight, |
| 467 | strl_hdr->rate, |
| 468 | strl_hdr->scale); |
| 469 | #if 0 |
| 470 | /* The calculation below is wrong. strf_hdr->biSizeImage shows |
| 471 | * uncompressed size. Looks like we need to go the ugly way to |
| 472 | * get the bitrage: |
| 473 | * http://www.virtualdub.org/blog/pivot/entry.php?id=159 |
| 474 | */ |
| 475 | bps = strf_hdr->biSizeImage * 8 * strl_hdr->rate / strl_hdr->scale; |
| 476 | if (bps==0) { |
| 477 | /* strf_hdr->biSizeImage may be zero for uncompressed RGB */ |
| 478 | bps = strf_hdr->biWidth * strf_hdr->biHeight * |
| 479 | strf_hdr->biBitCount * |
| 480 | strl_hdr->rate / strl_hdr->scale; |
| 481 | } |
| 482 | fport[i]->base.info.fmt.det.vid.avg_bps = bps; |
| 483 | fport[i]->base.info.fmt.det.vid.max_bps = bps; |
| 484 | #endif |
| 485 | } else { |
| 486 | strf_audio_hdr_t *strf_hdr = |
| 487 | &avi_hdr.strf_hdr[fport[i]->stream_id].strf_audio_hdr; |
| 488 | |
| 489 | fport[i]->bits_per_sample = strf_hdr->bits_per_sample; |
| 490 | fport[i]->usec_per_frame = avi_hdr.avih_hdr.usec_per_frame; |
| 491 | pjmedia_format_init_audio(&fport[i]->base.info.fmt, |
| 492 | fport[i]->fmt_id, |
| 493 | strf_hdr->sample_rate, |
| 494 | strf_hdr->nchannels, |
| 495 | strf_hdr->bits_per_sample, |
| 496 | 20000 /* fport[i]->usec_per_frame */, |
| 497 | strf_hdr->bytes_per_sec * 8, |
| 498 | strf_hdr->bytes_per_sec * 8); |
| 499 | } |
| 500 | |
| 501 | pj_strdup2(pool, &fport[i]->base.info.name, filename); |
| 502 | } |
| 503 | |
| 504 | /* Done. */ |
| 505 | *p_streams = pj_pool_alloc(pool, sizeof(pjmedia_avi_streams)); |
| 506 | (*p_streams)->num_streams = nstr; |
| 507 | (*p_streams)->streams = pj_pool_calloc(pool, (*p_streams)->num_streams, |
| 508 | sizeof(pjmedia_port *)); |
| 509 | for (i = 0; i < nstr; i++) |
| 510 | (*p_streams)->streams[i] = &fport[i]->base; |
| 511 | |
| 512 | PJ_LOG(4,(THIS_FILE, |
| 513 | "AVI file player '%.*s' created with " |
| 514 | "%d media ports", |
| 515 | (int)fport[0]->base.info.name.slen, |
| 516 | fport[0]->base.info.name.ptr, |
| 517 | (*p_streams)->num_streams)); |
| 518 | |
| 519 | return PJ_SUCCESS; |
| 520 | |
| 521 | on_error: |
| 522 | fport[0]->base.on_destroy(&fport[0]->base); |
| 523 | for (i = 1; i < nstr; i++) |
| 524 | fport[i]->base.on_destroy(&fport[i]->base); |
| 525 | if (status == AVI_EOF) |
| 526 | return PJMEDIA_EINVALIMEDIATYPE; |
| 527 | return status; |
| 528 | } |
| 529 | |
| 530 | PJ_DEF(unsigned) |
| 531 | pjmedia_avi_streams_get_num_streams(pjmedia_avi_streams *streams) |
| 532 | { |
| 533 | pj_assert(streams); |
| 534 | return streams->num_streams; |
| 535 | } |
| 536 | |
| 537 | PJ_DEF(pjmedia_avi_stream *) |
| 538 | pjmedia_avi_streams_get_stream(pjmedia_avi_streams *streams, |
| 539 | unsigned idx) |
| 540 | { |
| 541 | pj_assert(streams); |
| 542 | return (idx >=0 && idx < streams->num_streams ? |
| 543 | streams->streams[idx] : NULL); |
| 544 | } |
| 545 | |
| 546 | PJ_DEF(pjmedia_avi_stream *) |
| 547 | pjmedia_avi_streams_get_stream_by_media(pjmedia_avi_streams *streams, |
| 548 | unsigned start_idx, |
| 549 | pjmedia_type media_type) |
| 550 | { |
| 551 | unsigned i; |
| 552 | |
| 553 | pj_assert(streams); |
| 554 | for (i = start_idx; i < streams->num_streams; i++) |
| 555 | if (streams->streams[i]->info.fmt.type == media_type) |
| 556 | return streams->streams[i]; |
| 557 | return NULL; |
| 558 | } |
| 559 | |
| 560 | |
| 561 | /* |
| 562 | * Get the data length, in bytes. |
| 563 | */ |
| 564 | PJ_DEF(pj_ssize_t) pjmedia_avi_stream_get_len(pjmedia_avi_stream *stream) |
| 565 | { |
| 566 | struct avi_reader_port *fport; |
| 567 | |
| 568 | /* Sanity check */ |
| 569 | PJ_ASSERT_RETURN(stream, -PJ_EINVAL); |
| 570 | |
| 571 | /* Check that this is really a player port */ |
| 572 | PJ_ASSERT_RETURN(stream->info.signature == SIGNATURE, -PJ_EINVALIDOP); |
| 573 | |
| 574 | fport = (struct avi_reader_port*) stream; |
| 575 | |
| 576 | return (pj_ssize_t)(fport->fsize - fport->start_data); |
| 577 | } |
| 578 | |
| 579 | |
| 580 | /* |
| 581 | * Register a callback to be called when the file reading has reached the |
| 582 | * end of file. |
| 583 | */ |
| 584 | PJ_DEF(pj_status_t) |
| 585 | pjmedia_avi_stream_set_eof_cb( pjmedia_avi_stream *stream, |
| 586 | void *user_data, |
| 587 | pj_status_t (*cb)(pjmedia_avi_stream *stream, |
| 588 | void *usr_data)) |
| 589 | { |
| 590 | struct avi_reader_port *fport; |
| 591 | |
| 592 | /* Sanity check */ |
| 593 | PJ_ASSERT_RETURN(stream, -PJ_EINVAL); |
| 594 | |
| 595 | /* Check that this is really a player port */ |
| 596 | PJ_ASSERT_RETURN(stream->info.signature == SIGNATURE, -PJ_EINVALIDOP); |
| 597 | |
| 598 | fport = (struct avi_reader_port*) stream; |
| 599 | |
| 600 | fport->base.port_data.pdata = user_data; |
| 601 | fport->cb = cb; |
| 602 | |
| 603 | return PJ_SUCCESS; |
| 604 | } |
| 605 | |
| 606 | |
| 607 | /* |
| 608 | * Get frame from file. |
| 609 | */ |
| 610 | static pj_status_t avi_get_frame(pjmedia_port *this_port, |
| 611 | pjmedia_frame *frame) |
| 612 | { |
| 613 | struct avi_reader_port *fport = (struct avi_reader_port*)this_port; |
| 614 | pj_status_t status; |
| 615 | pj_ssize_t size_read = 0, size_to_read = 0; |
| 616 | |
| 617 | pj_assert(fport->base.info.signature == SIGNATURE); |
| 618 | |
| 619 | /* We encountered end of file */ |
| 620 | if (fport->eof) { |
| 621 | pj_status_t status = PJ_SUCCESS; |
| 622 | |
| 623 | PJ_LOG(5,(THIS_FILE, "File port %.*s EOF", |
| 624 | (int)fport->base.info.name.slen, |
| 625 | fport->base.info.name.ptr)); |
| 626 | |
| 627 | /* Call callback, if any */ |
| 628 | if (fport->cb) |
| 629 | status = (*fport->cb)(this_port, fport->base.port_data.pdata); |
| 630 | |
| 631 | /* If callback returns non PJ_SUCCESS or 'no loop' is specified, |
| 632 | * return immediately (and don't try to access player port since |
| 633 | * it might have been destroyed by the callback). |
| 634 | */ |
| 635 | if ((status != PJ_SUCCESS) || |
| 636 | (fport->options & PJMEDIA_AVI_FILE_NO_LOOP)) |
| 637 | { |
| 638 | frame->type = PJMEDIA_FRAME_TYPE_NONE; |
| 639 | frame->size = 0; |
| 640 | return PJ_EEOF; |
| 641 | } |
| 642 | |
| 643 | /* Rewind file */ |
| 644 | PJ_LOG(5,(THIS_FILE, "File port %.*s rewinding..", |
| 645 | (int)fport->base.info.name.slen, |
| 646 | fport->base.info.name.ptr)); |
| 647 | fport->eof = PJ_FALSE; |
| 648 | pj_file_setpos(fport->fd, fport->start_data, PJ_SEEK_SET); |
| 649 | } |
| 650 | |
| 651 | /* Fill frame buffer. */ |
| 652 | size_to_read = frame->size; |
| 653 | do { |
| 654 | pjmedia_avi_subchunk ch = {0, 0}; |
| 655 | char *cid; |
| 656 | unsigned stream_id; |
| 657 | |
| 658 | /* We need to read data from the file past the chunk boundary */ |
| 659 | if (fport->size_left > 0 && fport->size_left < size_to_read) { |
| 660 | status = file_read3(fport->fd, frame->buf, fport->size_left, |
| 661 | fport->bits_per_sample, &size_read); |
| 662 | if (status != PJ_SUCCESS) |
| 663 | goto on_error2; |
| 664 | size_to_read -= fport->size_left; |
| 665 | fport->size_left = 0; |
| 666 | } |
| 667 | |
| 668 | /* Read new chunk data */ |
| 669 | if (fport->size_left == 0) { |
| 670 | pj_off_t pos; |
| 671 | pj_file_getpos(fport->fd, &pos); |
| 672 | |
| 673 | /* Data is padded to the nearest WORD boundary */ |
| 674 | if (fport->pad) { |
| 675 | status = pj_file_setpos(fport->fd, fport->pad, PJ_SEEK_CUR); |
| 676 | fport->pad = 0; |
| 677 | } |
| 678 | |
| 679 | status = file_read(fport->fd, &ch, sizeof(pjmedia_avi_subchunk)); |
| 680 | if (status != PJ_SUCCESS) { |
| 681 | size_read = 0; |
| 682 | goto on_error2; |
| 683 | } |
| 684 | |
| 685 | cid = (char *)&ch.id; |
| 686 | if (cid[0] >= '0' && cid[0] <= '9' && |
| 687 | cid[1] >= '0' && cid[1] <= '9') |
| 688 | { |
| 689 | stream_id = (cid[0] - '0') * 10 + (cid[1] - '0'); |
| 690 | } else |
| 691 | stream_id = 100; |
| 692 | fport->pad = (pj_uint8_t)ch.len & 1; |
| 693 | |
| 694 | TRACE_((THIS_FILE, "Reading movi data at pos %u (%x), id: %.*s, " |
| 695 | "length: %u", (unsigned long)pos, |
| 696 | (unsigned long)pos, 4, cid, ch.len)); |
| 697 | |
| 698 | /* We are only interested in data with our stream id */ |
| 699 | if (stream_id != fport->stream_id) { |
| 700 | if (COMPARE_TAG(ch.id, PJMEDIA_AVI_LIST_TAG)) |
| 701 | PJ_LOG(5, (THIS_FILE, "Unsupported LIST tag found in " |
| 702 | "the movi data.")); |
| 703 | else if (COMPARE_TAG(ch.id, PJMEDIA_AVI_RIFF_TAG)) { |
| 704 | PJ_LOG(3, (THIS_FILE, "Unsupported format: multiple " |
| 705 | "AVIs in a single file.")); |
| 706 | status = AVI_EOF; |
| 707 | goto on_error2; |
| 708 | } |
| 709 | |
| 710 | status = pj_file_setpos(fport->fd, ch.len, |
| 711 | PJ_SEEK_CUR); |
| 712 | continue; |
| 713 | } |
| 714 | fport->size_left = ch.len; |
| 715 | } |
| 716 | |
| 717 | frame->type = (fport->base.info.fmt.type == PJMEDIA_TYPE_VIDEO ? |
| 718 | PJMEDIA_FRAME_TYPE_VIDEO : PJMEDIA_FRAME_TYPE_AUDIO); |
| 719 | |
| 720 | if (frame->type == PJMEDIA_FRAME_TYPE_AUDIO) { |
| 721 | if (size_to_read > fport->size_left) |
| 722 | size_to_read = fport->size_left; |
| 723 | status = file_read3(fport->fd, (char *)frame->buf + frame->size - |
| 724 | size_to_read, size_to_read, |
| 725 | fport->bits_per_sample, &size_read); |
| 726 | if (status != PJ_SUCCESS) |
| 727 | goto on_error2; |
| 728 | fport->size_left -= size_to_read; |
| 729 | } else { |
| 730 | pj_assert(frame->size >= ch.len); |
| 731 | status = file_read3(fport->fd, frame->buf, ch.len, |
| 732 | 0, &size_read); |
| 733 | if (status != PJ_SUCCESS) |
| 734 | goto on_error2; |
| 735 | frame->size = ch.len; |
| 736 | fport->size_left = 0; |
| 737 | } |
| 738 | |
| 739 | break; |
| 740 | |
| 741 | } while(1); |
| 742 | |
| 743 | frame->timestamp.u64 = fport->next_ts.u64; |
| 744 | if (frame->type == PJMEDIA_FRAME_TYPE_AUDIO) { |
| 745 | if (fport->usec_per_frame) { |
| 746 | fport->next_ts.u64 += (fport->usec_per_frame * |
| 747 | fport->base.info.fmt.det.aud.clock_rate / |
| 748 | 1000000); |
| 749 | } else { |
| 750 | fport->next_ts.u64 += (frame->size * |
| 751 | fport->base.info.fmt.det.aud.clock_rate / |
| 752 | (fport->base.info.fmt.det.aud.avg_bps / 8)); |
| 753 | } |
| 754 | } else { |
| 755 | if (fport->usec_per_frame) { |
| 756 | fport->next_ts.u64 += (fport->usec_per_frame * VIDEO_CLOCK_RATE / |
| 757 | 1000000); |
| 758 | } else { |
| 759 | fport->next_ts.u64 += (frame->size * VIDEO_CLOCK_RATE / |
| 760 | (fport->base.info.fmt.det.vid.avg_bps / 8)); |
| 761 | } |
| 762 | } |
| 763 | |
| 764 | return PJ_SUCCESS; |
| 765 | |
| 766 | on_error2: |
| 767 | if (status == AVI_EOF) { |
| 768 | size_to_read -= size_read; |
| 769 | pj_bzero((char *)frame->buf + frame->size - size_to_read, |
| 770 | size_to_read); |
| 771 | fport->eof = PJ_TRUE; |
| 772 | |
| 773 | return PJ_SUCCESS; |
| 774 | } |
| 775 | |
| 776 | return status; |
| 777 | } |
| 778 | |
| 779 | /* |
| 780 | * Destroy port. |
| 781 | */ |
| 782 | static pj_status_t avi_on_destroy(pjmedia_port *this_port) |
| 783 | { |
| 784 | struct avi_reader_port *fport = (struct avi_reader_port*) this_port; |
| 785 | |
| 786 | pj_assert(this_port->info.signature == SIGNATURE); |
| 787 | |
| 788 | if (fport->fd != (pj_oshandle_t) (pj_ssize_t)-1) |
| 789 | pj_file_close(fport->fd); |
| 790 | return PJ_SUCCESS; |
| 791 | } |
| 792 | |
| 793 | |
| 794 | #endif /* PJMEDIA_HAS_VIDEO */ |