| 452 | |
| 453 | |
| 454 | ILubyte *GetChannel() |
| 455 | { |
| 456 | BLOCKHEAD Block; |
| 457 | CHANNEL_CHUNK Channel; |
| 458 | ILubyte *CompData, *Data; |
| 459 | ILuint ChunkSize, Padding; |
| 460 | |
| 461 | if (iread(&Block, 1, sizeof(Block)) != sizeof(Block)) |
| 462 | return NULL; |
| 463 | if (Header.MajorVersion == 3) |
| 464 | Block.BlockLen = GetLittleUInt(); |
| 465 | else |
| 466 | UInt(&Block.BlockLen); |
| 467 | |
| 468 | if (Block.HeadID[0] != 0x7E || Block.HeadID[1] != 0x42 || |
| 469 | Block.HeadID[2] != 0x4B || Block.HeadID[3] != 0x00) { |
| 470 | ilSetError(IL_ILLEGAL_FILE_VALUE); |
| 471 | return NULL; |
| 472 | } |
| 473 | if (Block.BlockID != PSP_CHANNEL_BLOCK) { |
| 474 | ilSetError(IL_ILLEGAL_FILE_VALUE); |
| 475 | return NULL; |
| 476 | } |
| 477 | |
| 478 | |
| 479 | if (Header.MajorVersion >= 4) { |
| 480 | ChunkSize = GetLittleUInt(); |
| 481 | if (iread(&Channel, sizeof(Channel), 1) != 1) |
| 482 | return NULL; |
| 483 | |
| 484 | Padding = (ChunkSize - 4) - sizeof(Channel); |
| 485 | if (Padding > 0) |
| 486 | iseek(Padding, IL_SEEK_CUR); |
| 487 | } |
| 488 | else { |
| 489 | if (iread(&Channel, sizeof(Channel), 1) != 1) |
| 490 | return NULL; |
| 491 | } |
| 492 | |
| 493 | |
| 494 | CompData = (ILubyte*)ialloc(Channel.CompLen); |
| 495 | Data = (ILubyte*)ialloc(AttChunk.Width * AttChunk.Height); |
| 496 | if (CompData == NULL || Data == NULL) { |
| 497 | ifree(Data); |
| 498 | ifree(CompData); |
| 499 | return NULL; |
| 500 | } |
| 501 | |
| 502 | if (iread(CompData, 1, Channel.CompLen) != Channel.CompLen) { |
| 503 | ifree(CompData); |
| 504 | ifree(Data); |
| 505 | return NULL; |
| 506 | } |
| 507 | |
| 508 | switch (AttChunk.Compression) |
| 509 | { |
| 510 | case PSP_COMP_NONE: |
| 511 | ifree(Data); |
no test coverage detected