本文整理汇总了C++中CCodecBuffer::GetPitch方法的典型用法代码示例。如果您正苦于以下问题：C++ CCodecBuffer::GetPitch方法的具体用法？C++ CCodecBuffer::GetPitch怎么用？C++ CCodecBuffer::GetPitch使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类CCodecBuffer的用法示例。
在下文中一共展示了CCodecBuffer::GetPitch方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: Decompress
// notes:
// Slow CPU based decompression : Should look into also using HW based decompression with this interface
//
CodecError CCodec_ASTC::Decompress(CCodecBuffer& bufferIn, CCodecBuffer& bufferOut, Codec_Feedback_Proc pFeedbackProc, CMP_DWORD_PTR pUser1, CMP_DWORD_PTR pUser2)
{
m_xdim = bufferIn.GetBlockWidth();
m_ydim = bufferIn.GetBlockHeight();
m_zdim = 1;
CodecError err = InitializeASTCLibrary();
if (err != CE_OK) return err;
// Our Compressed data Blocks are always 128 bit long (4x4 blocks)
const CMP_DWORD imageWidth = bufferIn.GetWidth();
const CMP_DWORD imageHeight = bufferIn.GetHeight();
const CMP_DWORD imageDepth = 1;
const BYTE bitness = 8;
const CMP_DWORD CompBlockX = bufferIn.GetBlockWidth();
const CMP_DWORD CompBlockY = bufferIn.GetBlockHeight();
CMP_BYTE Block_Width = bufferIn.GetBlockWidth();
CMP_BYTE Block_Height = bufferIn.GetBlockHeight();
const CMP_DWORD dwBlocksX = ((bufferIn.GetWidth() + (CompBlockX - 1)) / CompBlockX);
const CMP_DWORD dwBlocksY = ((bufferIn.GetHeight()+ (CompBlockY - 1)) / CompBlockY);
const CMP_DWORD dwBlocksZ = 1;
const CMP_DWORD dwBufferInDepth = 1;
// Override the current input buffer Pitch size (Since it will be set according to the Compressed Block Sizes
// and not to the Compressed Codec data which is for ASTC 16 Bytes per block x Number of blocks per row
bufferIn.SetPitch(16 * dwBlocksX);
// Output data size Pitch
CMP_DWORD dwPitch = bufferOut.GetPitch();
// Output Buffer
BYTE *pDataOut = bufferOut.GetData();
const CMP_DWORD dwBlocksXY = dwBlocksX*dwBlocksY;
for(CMP_DWORD cmpRowY = 0; cmpRowY < dwBlocksY; cmpRowY++) // Compressed images row = height
{
for(CMP_DWORD cmpColX = 0; cmpColX < dwBlocksX; cmpColX++) // Compressed images Col = width
{
union FBLOCKS
{
float decodedBlock[144][4]; // max 12x12 block size
float destBlock[576]; // max 12x12x4
} DecData;
union BBLOCKS
{
CMP_DWORD compressedBlock[4];
BYTE out[16];
BYTE in[16];
} CompData;
bufferIn.ReadBlock(cmpColX*4, cmpRowY*4, CompData.compressedBlock, 4);
// Encode to the appropriate location in the compressed image
m_decoder->DecompressBlock(Block_Width, Block_Height, bitness, DecData.decodedBlock,CompData.in);
// Now that we have a decoded block lets copy that data over to the target image buffer
CMP_DWORD outCol = cmpColX*Block_Width;
CMP_DWORD outRow = cmpRowY*Block_Height;
CMP_DWORD outImgRow = outRow;
CMP_DWORD outImgCol = outCol;
for (int row = 0; row < Block_Height; row++)
{
CMP_DWORD nextRowCol = (outRow+row)*dwPitch + (outCol * 4);
CMP_BYTE* pData = (CMP_BYTE*)(pDataOut + nextRowCol);
if ((outImgRow + row) < imageHeight)
{
outImgCol = outCol;
for (int col = 0; col < Block_Width; col++)
{
CMP_DWORD w = outImgCol + col;
if (w < imageWidth)
{
int index = row*Block_Width + col;
*pData++ = (CMP_BYTE)DecData.decodedBlock[index][BC_COMP_RED];
*pData++ = (CMP_BYTE)DecData.decodedBlock[index][BC_COMP_GREEN];
*pData++ = (CMP_BYTE)DecData.decodedBlock[index][BC_COMP_BLUE];
*pData++ = (CMP_BYTE)DecData.decodedBlock[index][BC_COMP_ALPHA];
}
else break;
}
}
}
}
if (pFeedbackProc)
{
float fProgress = 100.f * (cmpRowY * dwBlocksX) / dwBlocksXY;
if (pFeedbackProc(fProgress, pUser1, pUser2))
{
return CE_Aborted;
}
}
//.........这里部分代码省略.........