H.264/AVC Reference Software Encoder: quantChroma.c Source File

00001 
00002 /*!
00003  *************************************************************************************
00004  * \file quantChroma.c
00005  *
00006  * \brief
00007  *    Quantization initialization function for Chroma blocks
00008  *
00009  * \author
00010  *    Main contributors (see contributors.h for copyright, address and affiliation details)
00011  *    - Alexis Michael Tourapis                  <alexismt@ieee.org>
00012  *
00013  *************************************************************************************
00014  */
00015 
00016 #include "contributors.h"
00017 
00018 #include "global.h"
00019 #include "quant4x4.h"
00020 #include "quantChroma.h"
00021 
00022 /*!
00023 ************************************************************************
00024 * \brief
00025 *    Quantization initialization function
00026 *
00027 ************************************************************************
00028 */
00029 void init_quant_Chroma(Slice *currSlice)
00030 {
00031   ImageParameters *p_Img = currSlice->p_Img;
00032   InputParameters *p_Inp = currSlice->p_Inp;
00033 
00034   if (p_Inp->UseRDOQuant == 1 && p_Inp->RDOQ_CR == 1)
00035   {
00036     currSlice->quant_ac4x4cr = quant_ac4x4_trellis;
00037     if (p_Inp->RDOQ_DC_CR)
00038     {
00039       if (p_Img->yuv_format == YUV422)
00040         currSlice->quant_dc_cr = quant_dc4x2_trellis;
00041       else
00042         currSlice->quant_dc_cr = quant_dc2x2_trellis;
00043     }
00044     else
00045     {
00046       if (p_Img->yuv_format == YUV422)
00047         currSlice->quant_dc_cr   = quant_dc4x2_normal;
00048       else
00049         currSlice->quant_dc_cr   = quant_dc2x2_normal;
00050     }
00051     if (currSlice->symbol_mode == CABAC)
00052       currSlice->rdoq_dc_cr = rdoq_dc_cr_CABAC;
00053     else
00054       currSlice->rdoq_dc_cr = rdoq_dc_cr_CAVLC;
00055   }
00056   else if (p_Inp->UseRDOQuant == 1 || (!(currSlice->p_Img)->AdaptiveRounding))
00057   {
00058     currSlice->quant_ac4x4cr = quant_ac4x4_normal;
00059     if (p_Img->yuv_format == YUV422)
00060       currSlice->quant_dc_cr   = quant_dc4x2_normal;
00061     else
00062       currSlice->quant_dc_cr   = quant_dc2x2_normal;
00063   }
00064   else
00065   {
00066     currSlice->quant_ac4x4cr = quant_ac4x4_around;
00067     if (p_Img->yuv_format == YUV422)
00068       currSlice->quant_dc_cr   = quant_dc4x2_around;
00069     else
00070       currSlice->quant_dc_cr   = quant_dc2x2_around;
00071   }
00072 }
00073 
00074