Method fetchResource_subroutine

libs/JSystem/JKernel/JKRDvdArchive.cpp:217–274

}

u32 JKRDvdArchive::fetchResource_subroutine(long entryNum, u32 offset, u32 size, u8 *data, u32 expandSize, int fileCompression, int archiveCompression) {
    u32 prevAlignedSize, alignedSize;

    alignedSize = ALIGN_NEXT(size, 32);
    prevAlignedSize = ALIGN_PREV(expandSize, 32);
    switch (archiveCompression)
    {
    case JKRCOMPRESSION_NONE: {
        switch (fileCompression)
        {
        case JKRCOMPRESSION_NONE:

            if (alignedSize > prevAlignedSize)
            {
                alignedSize = prevAlignedSize;
            }
            JKRDvdToMainRam(entryNum, data, EXPAND_SWITCH_DEFAULT, alignedSize, nullptr, JKRDvdRipper::ALLOC_DIR_TOP, offset, nullptr, nullptr);
            DCInvalidateRange(data, alignedSize);
            return alignedSize;

        case JKRCOMPRESSION_YAY0:
        case JKRCOMPRESSION_YAZ0:
            u8 buf[64];
            u8 *bufPtr = (u8 *)ALIGN_NEXT((u32)buf, 32);
            JKRDvdToMainRam(entryNum, bufPtr, EXPAND_SWITCH_NONE, sizeof(buf) / 2, nullptr, JKRDvdRipper::ALLOC_DIR_TOP, offset, nullptr, nullptr);
            DCInvalidateRange(bufPtr, sizeof(buf) / 2);
            u32 expandFileSize = JKRDecompExpandSize(bufPtr);
            alignedSize = ALIGN_NEXT(expandFileSize, 32);
            if (alignedSize > prevAlignedSize) {
                alignedSize = prevAlignedSize;
            }
            JKRDvdToMainRam(entryNum, data, EXPAND_SWITCH_DECOMPRESS, alignedSize, nullptr, JKRDvdRipper::ALLOC_DIR_TOP, offset, nullptr, nullptr);
            DCInvalidateRange(data, alignedSize);
            return expandFileSize;
        }
    }
    case JKRCOMPRESSION_YAZ0: {
        if (size > prevAlignedSize)
        {
            size = prevAlignedSize;
        }
        JKRDvdRipper::loadToMainRAM(entryNum, data, EXPAND_SWITCH_DECOMPRESS, size, nullptr, JKRDvdRipper::ALLOC_DIR_TOP, offset, nullptr, nullptr);
        DCInvalidateRange(data, size);
        return size;
    }

    case JKRCOMPRESSION_YAY0: {
#line 649
        JUT_PANIC("Sorry, not applied for SZP archive.\n");
    }        
    
    default: {
        JUT_PANIC("??? bad sequence\n");
    }
        
    }
    return 0;
}