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quantChroma.c
Package: chapter15.rar　[view]
Upload User: hjq518
Upload Date: 2021-12-09
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Code Size: 2k
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Audio program

Development Platform:

Visual C++

quantChroma.c：Code Content
  2. /*!
  3.  *************************************************************************************
  4.  * file quantChroma.c
  5.  *
  6.  * brief
  7.  *    Quantization initialization function for Chroma blocks
  8.  *
  9.  * author
  10.  *    Main contributors (see contributors.h for copyright, address and affiliation details)
  11.  *    - Alexis Michael Tourapis                  <alexismt@ieee.org>
  12.  *
  13.  *************************************************************************************
  14.  */
  16. #include "contributors.h"
  18. #include "global.h"
  19. #include "quant4x4.h"
  20. #include "quantChroma.h"
  22. /*!
  23. ************************************************************************
  24. * brief
  25. *    Quantization initialization function
  26. *
  27. ************************************************************************
  28. */
  29. void init_quant_Chroma(InputParameters *params, ImageParameters *img, Slice *currSlice)
  30. {
  31.   if (params->UseRDOQuant == 1 && params->RDOQ_CR == 1)
  32.   {
  33.     quant_ac4x4cr = quant_ac4x4_trellis;
  34.     if ( currSlice->symbol_mode == CABAC )
  35.     {
  36.       if (params->yuv_format == YUV422)
  37.         quant_dc_cr   = quant_dc4x2_trellis;
  38.       else
  39.         quant_dc_cr   = quant_dc2x2_trellis;
  40.     }
  41.     else
  42.     {
  43.       if (params->yuv_format == YUV422)
  44.         quant_dc_cr   = quant_dc4x2_normal;
  45.       else
  46.         quant_dc_cr   = quant_dc2x2_normal;
  47.     }
  48.   }
  49.   else if (params->UseRDOQuant == 1 || (!img->AdaptiveRounding))
  50.   {
  51.     quant_ac4x4cr = quant_ac4x4_normal;
  52.     if (params->yuv_format == YUV422)
  53.       quant_dc_cr   = quant_dc4x2_normal;
  54.     else
  55.       quant_dc_cr   = quant_dc2x2_normal;
  56.   }
  57.   else
  58.   {
  59.     quant_ac4x4cr = quant_ac4x4_around;
  60.     if (params->yuv_format == YUV422)
  61.       quant_dc_cr   = quant_dc4x2_around;
  62.     else
  63.       quant_dc_cr   = quant_dc2x2_around;
  64.   }
  65. }