コード例 #1
0
ファイル: TGALoader.cpp プロジェクト: Narthe/CastleGenerator
//*******************************************************************************
// Decompress RGB24 RLE
//
BOOL DecompressRGB24RLE(FILE *pFile, TGAHEADER *pHeader, IMAGE_DATA *pContext)
{
	unsigned int u32Stride, i, j, u32PixelDepth;
	unsigned char *pu8Src1, *pu8Src2;

	//--- Allocate image buffer

	pContext->pu8Pixels = new unsigned char[3*pContext->u32Width*pContext->u32Height];
	pContext->PixelFormat = PIXELFORMAT_R8G8B8;
	u32PixelDepth = 3;

	if (!pContext->pu8Pixels)
		return(FALSE);

	//--- RLE decompression from file

	RLEDecompress(pContext->pu8Pixels, pFile, pContext->u32Width*pContext->u32Height, u32PixelDepth);

	//--- Swap bytes and image to get proper format

	u32Stride = pContext->u32Width*u32PixelDepth;

	for (j=0; j<pContext->u32Height>>1; ++j)
	{
		pu8Src1 = pContext->pu8Pixels + j*u32Stride;
		pu8Src2 = pContext->pu8Pixels + (pContext->u32Height-1-j)*u32Stride;

		for (i=0; i<pContext->u32Width*u32PixelDepth; i+=u32PixelDepth)
		{
			pu8Src1[i] ^= pu8Src2[i+2];
			pu8Src2[i+2] ^= pu8Src1[i];
			pu8Src1[i] ^= pu8Src2[i+2];
		}
	}
	
	//--- Flip image

	if (pContext->u32Height & 1)
	{
		j = (pContext->u32Height>>1)+1;

		pu8Src1 = pContext->pu8Pixels + j*u32Stride;
		pu8Src2 = pContext->pu8Pixels + (pContext->u32Height-1-j)*u32Stride;

		for (i=0; i<pContext->u32Width*u32PixelDepth; i+=u32PixelDepth)
		{
			pu8Src1[i] ^= pu8Src2[i+2];
			pu8Src2[i+2] ^= pu8Src1[i];
			pu8Src1[i] ^= pu8Src2[i+2];
		}
	}
コード例 #2
0
bool
IMI::FlashRead(Port &port, void *buffer, unsigned address, unsigned size)
{
  if (!_connected)
    return false;

  if (size == 0)
    return true;

  const TMsg *pMsg = SendRet(port, MSG_FLASH, 0, 0, MSG_FLASH, -1,
                             IMICOMM_BIGPARAM1(address),
                             IMICOMM_BIGPARAM2(address),
                             size, 300, 2);

  if (pMsg == NULL || size != pMsg->parameter3)
    return false;

  return RLEDecompress((IMIBYTE*)buffer, pMsg->payload, pMsg->payloadSize, size);
}
コード例 #3
0
ファイル: TGALoader.cpp プロジェクト: Narthe/CastleGenerator
//*******************************************************************************
// Decompress RGB16 RLE
//
BOOL DecompressRGB16RLE(FILE *pFile, TGAHEADER *pHeader, IMAGE_DATA *pContext)
{
	unsigned int u32Stride, i, j, k;
	unsigned short *pu16RLEBuffer;
	unsigned char *pu8Ptr;

	//--- Check alpha channel

	if (pHeader->cImageDescriptor & 0xF)
	{
		//--- Allocate image buffer

		pContext->pu8Pixels = new unsigned char[4*pContext->u32Width*pContext->u32Height];
		pContext->PixelFormat = PIXELFORMAT_R8G8B8A8;
		u32Stride = pContext->u32Width*4;
	}
	else
	{
		//--- Allocate image buffer

		pContext->pu8Pixels = new unsigned char[3*pContext->u32Width*pContext->u32Height];
		pContext->PixelFormat = PIXELFORMAT_R8G8B8;
		u32Stride = pContext->u32Width*3;
	}

	if (!pContext->pu8Pixels)
		return(FALSE);

	//--- Allocate decompression buffer

	pu16RLEBuffer = new unsigned short[pContext->u32Width*pContext->u32Height];
	if (!pu16RLEBuffer)
	{
		delete [] pContext->pu8Pixels;
		pContext->pu8Pixels = NULL;
		return(FALSE);
	}

	//--- Decompress data

	RLEDecompress((unsigned char *)pu16RLEBuffer, pFile, pContext->u32Width*pContext->u32Height, 2);

	//--- Reformat data

	for (j=0; j<pContext->u32Height; ++j)
	{
		pu8Ptr = pContext->pu8Pixels + (pContext->u32Height-1-j)*u32Stride;
		for (i=0; i<pContext->u32Width; ++i)
		{
			k = i*j;
			*(pu8Ptr++) = (unsigned char)((((pu16RLEBuffer[k] & 0x7C00)>>10)*255)/31);
			*(pu8Ptr++) = (unsigned char)((((pu16RLEBuffer[k] & 0x3E0)>>5)*255)/31);
			*(pu8Ptr++) = (unsigned char)(((pu16RLEBuffer[k] & 0x1F)*255)/31);
			
			if (pHeader->cImageDescriptor & 0xF)
				*(pu8Ptr++) = ((pu16RLEBuffer[k] & 0x8000) == 0x8000)?255:0;
		}
	}

	//--- Destroy work buffer

	delete [] pu16RLEBuffer;

	return(TRUE);
}