| 404 | } |
| 405 | |
| 406 | static int rm_read_header(AVFormatContext *s, AVFormatParameters *ap) |
| 407 | { |
| 408 | RMDemuxContext *rm = s->priv_data; |
| 409 | AVStream *st; |
| 410 | ByteIOContext *pb = s->pb; |
| 411 | unsigned int tag; |
| 412 | int tag_size; |
| 413 | unsigned int start_time, duration; |
| 414 | unsigned int data_off = 0, indx_off = 0; |
| 415 | char buf[128]; |
| 416 | int flags = 0; |
| 417 | |
| 418 | tag = get_le32(pb); |
| 419 | if (tag == MKTAG('.', 'r', 'a', 0xfd)) { |
| 420 | /* very old .ra format */ |
| 421 | return rm_read_header_old(s, ap); |
| 422 | } else if (tag != MKTAG('.', 'R', 'M', 'F')) { |
| 423 | return AVERROR(EIO); |
| 424 | } |
| 425 | |
| 426 | get_be32(pb); /* header size */ |
| 427 | get_be16(pb); |
| 428 | get_be32(pb); |
| 429 | get_be32(pb); /* number of headers */ |
| 430 | |
| 431 | for(;;) { |
| 432 | if (url_feof(pb)) |
| 433 | return -1; |
| 434 | tag = get_le32(pb); |
| 435 | tag_size = get_be32(pb); |
| 436 | get_be16(pb); |
| 437 | #if 0 |
| 438 | printf("tag=%c%c%c%c (%08x) size=%d\n", |
| 439 | (tag) & 0xff, |
| 440 | (tag >> 8) & 0xff, |
| 441 | (tag >> 16) & 0xff, |
| 442 | (tag >> 24) & 0xff, |
| 443 | tag, |
| 444 | tag_size); |
| 445 | #endif |
| 446 | if (tag_size < 10 && tag != MKTAG('D', 'A', 'T', 'A')) |
| 447 | return -1; |
| 448 | switch(tag) { |
| 449 | case MKTAG('P', 'R', 'O', 'P'): |
| 450 | /* file header */ |
| 451 | get_be32(pb); /* max bit rate */ |
| 452 | get_be32(pb); /* avg bit rate */ |
| 453 | get_be32(pb); /* max packet size */ |
| 454 | get_be32(pb); /* avg packet size */ |
| 455 | get_be32(pb); /* nb packets */ |
| 456 | get_be32(pb); /* duration */ |
| 457 | get_be32(pb); /* preroll */ |
| 458 | indx_off = get_be32(pb); /* index offset */ |
| 459 | data_off = get_be32(pb); /* data offset */ |
| 460 | get_be16(pb); /* nb streams */ |
| 461 | flags = get_be16(pb); /* flags */ |
| 462 | break; |
| 463 | case MKTAG('C', 'O', 'N', 'T'): |
nothing calls this directly
no test coverage detected