HEVC bit depth increasment

/// encoder configuration class

 

class TAppEncCfg

{

// coding tools (bit-depth)

UInt m_uiInputBitDepth; ///< bit-depth of input file

UInt m_uiOutputBitDepth; ///< bit-depth of output file

UInt m_uiInternalBitDepth; ///< Internal bit-depth (BitDepth+BitIncrement)

}

   

bool TVideoIOYuv::read ( TComPicYuv*  pPicYuv, Int aiPad[2] )  Read one Y'CbCr frame 中,通过scalePlane函数将读入的像素值左移 BitIncrement 位转换到 InternalBitDepth

在重建及解码时则调用bool TVideoIOYuv::write( TComPicYuv* pPicYuv, Int aiPad[2] )函数,No bit-depth conversion is performed,pcPicYuv is assumed to be at TVideoIO::m_fileBitdepth depthm_fileBitdepth  OutputBitDepth指定。InternalBitDepth OutputBitDepth不一样时也会掉用scalePlane 转换(右移BitIncrement )。

   

解码时,cfg文件中-d指定重建的depth,写出时再将InternalBitDepth转为OutputBitDepth.

编码时,默认的cfg文件中,没有指定OutputBitDepth的值,OutputBitDepth默认与InternalBitDepth相同,需要自己加上以指定重建图像的bitdepth.

posted @ 2011-10-28 12:42  mlj318  阅读(871)  评论(0编辑  收藏  举报