mp4_mblock.h

MPEG4编解码的C语言源代码

/**************************************************************************
 *                                                                        *
 * This code has been developed by Andrea Graziani. This software is an   *
 * implementation of a part of one or more MPEG-4 Video tools as          *
 * specified in ISO/IEC 14496-2 standard.  Those intending to use this    *
 * software module in hardware or software products are advised that its  *
 * use may infringe existing patents or copyrights, and any such use      *
 * would be at such party's own risk.  The original developer of this     *
 * software module and his/her company, and subsequent editors and their  *
 * companies (including Project Mayo), will have no liability for use of  *
 * this software or modifications or derivatives thereof.                 *
 *                                                                        *
 * Project Mayo gives users of the Codec a license to this software       *
 * module or modifications thereof for use in hardware or software        *
 * products claiming conformance to the MPEG-4 Video Standard as          *
 * described in the Open DivX license.                                    *
 *                                                                        *
 * The complete Open DivX license can be found at                         *
 * http://www.projectmayo.com/opendivx/license.php                        *
 *                                                                        *
 **************************************************************************/
/**
*  Copyright (C) 2001 - Project Mayo
 *
 * Andrea Graziani (Ag)
 *
 * DivX Advanced Research Center <[e-mail]>
*
**/
// mp4_mblock.h //

#ifndef _MP4_MBLOCK_H_
#define _MP4_MBLOCK_H_

/*** *** ***/

typedef struct {
  int val, len;
} VLCtabMb;

/*** *** ***/

static int DQtab[4] = {
	-1, -2, 1, 2
};

/***

static VLCtabMb MCBPCtabIntra[] = {
	{-1,0},
	{20,6}, {36,6}, {52,6}, {4,4}, {4,4}, {4,4}, 
	{4,4}, {19,3}, {19,3}, {19,3}, {19,3}, {19,3}, 
	{19,3}, {19,3}, {19,3}, {35,3}, {35,3}, {35,3}, 
	{35,3}, {35,3}, {35,3}, {35,3}, {35,3}, {51,3}, 
	{51,3}, {51,3}, {51,3}, {51,3}, {51,3}, {51,3}, 
	{51,3},
};

static VLCtabMb MCBPCtabInter[] = {
	{-1,0}, 
	{255,9}, {52,9}, {36,9}, {20,9}, {49,9}, {35,8}, {35,8}, {19,8}, {19,8},
	{50,8}, {50,8}, {51,7}, {51,7}, {51,7}, {51,7}, {34,7}, {34,7}, {34,7},
	{34,7}, {18,7}, {18,7}, {18,7}, {18,7}, {33,7}, {33,7}, {33,7}, {33,7}, 
	{17,7}, {17,7}, {17,7}, {17,7}, {4,6}, {4,6}, {4,6}, {4,6}, {4,6}, 
	{4,6}, {4,6}, {4,6}, {48,6}, {48,6}, {48,6}, {48,6}, {48,6}, {48,6}, 
	{48,6}, {48,6}, {3,5}, {3,5}, {3,5}, {3,5}, {3,5}, {3,5}, {3,5}, 
	{3,5}, {3,5}, {3,5}, {3,5}, {3,5}, {3,5}, {3,5}, {3,5}, {3,5}, 
	{32,4}, {32,4}, {32,4}, {32,4}, {32,4}, {32,4}, {32,4}, {32,4}, {32,4}, 
	{32,4}, {32,4}, {32,4}, {32,4}, {32,4}, {32,4}, {32,4}, {32,4}, {32,4}, 
	{32,4}, {32,4}, {32,4}, {32,4}, {32,4}, {32,4}, {32,4}, {32,4}, {32,4}, 
	{32,4}, {32,4}, {32,4}, {32,4}, {32,4}, {16,4}, {16,4}, {16,4}, {16,4}, 
	{16,4}, {16,4}, {16,4}, {16,4}, {16,4}, {16,4}, {16,4}, {16,4}, {16,4}, 
	{16,4}, {16,4}, {16,4}, {16,4}, {16,4}, {16,4}, {16,4}, {16,4}, {16,4}, 
	{16,4}, {16,4}, {16,4}, {16,4}, {16,4}, {16,4}, {16,4}, {16,4}, {16,4}, 
	{16,4}, {2,3}, {2,3}, {2,3}, {2,3}, {2,3}, {2,3}, {2,3}, {2,3}, 
	{2,3}, {2,3}, {2,3}, {2,3}, {2,3}, {2,3}, {2,3}, {2,3}, {2,3}, 
	{2,3}, {2,3}, {2,3}, {2,3}, {2,3}, {2,3}, {2,3}, {2,3}, {2,3}, 
	{2,3}, {2,3}, {2,3}, {2,3}, {2,3}, {2,3}, {2,3}, {2,3}, {2,3}, 
	{2,3}, {2,3}, {2,3}, {2,3}, {2,3}, {2,3}, {2,3}, {2,3}, {2,3}, 
	{2,3}, {2,3}, {2,3}, {2,3}, {2,3}, {2,3}, {2,3}, {2,3}, {2,3}, 
	{2,3}, {2,3}, {2,3}, {2,3}, {2,3}, {2,3}, {2,3}, {2,3}, {2,3}, 
	{2,3}, {2,3}, {1,3}, {1,3}, {1,3}, {1,3}, {1,3}, {1,3}, {1,3}, 
	{1,3}, {1,3}, {1,3}, {1,3}, {1,3}, {1,3}, {1,3}, {1,3}, {1,3}, 
	{1,3}, {1,3}, {1,3}, {1,3}, {1,3}, {1,3}, {1,3}, {1,3}, {1,3}, 
	{1,3}, {1,3}, {1,3}, {1,3}, {1,3}, {1,3}, {1,3}, {1,3}, {1,3}, 
	{1,3}, {1,3}, {1,3}, {1,3}, {1,3}, {1,3}, {1,3}, {1,3}, {1,3}, 
	{1,3}, {1,3}, {1,3}, {1,3}, {1,3}, {1,3}, {1,3}, {1,3}, {1,3}, 
	{1,3}, {1,3}, {1,3}, {1,3}, {1,3}, {1,3}, {1,3}, {1,3}, {1,3}, 
	{1,3}, {1,3}, {1,3}, 
};


static VLCtabMb CBPYtab[48] = 
{ 
	{-1,0}, {-1,0}, {6,6},  {9,6},  {8,5},  {8,5},  {4,5},  {4,5},
	{2,5},  {2,5},  {1,5},  {1,5},  {0,4},  {0,4},  {0,4},  {0,4}, 
  {12,4}, {12,4}, {12,4}, {12,4}, {10,4}, {10,4}, {10,4}, {10,4},
  {14,4}, {14,4}, {14,4}, {14,4}, {5,4},  {5,4},  {5,4},  {5,4},
  {13,4}, {13,4}, {13,4}, {13,4}, {3,4},  {3,4},  {3,4},  {3,4}, 
  {11,4}, {11,4}, {11,4}, {11,4}, {7,4},  {7,4},  {7,4},  {7,4}, 
};


static VLCtabMb MVtab0[] =
{
	{3,4}, {-3,4}, {2,3}, {2,3}, {-2,3}, {-2,3}, {1,2}, {1,2}, {1,2}, {1,2},
	{-1,2}, {-1,2}, {-1,2}, {-1,2}
};

static VLCtabMb MVtab1[] = 
{
	{12,10}, {-12,10}, {11,10}, {-11,10}, {10,9}, {10,9}, {-10,9}, {-10,9},
	{9,9}, {9,9}, {-9,9}, {-9,9}, {8,9}, {8,9}, {-8,9}, {-8,9}, {7,7}, {7,7},
	{7,7}, {7,7}, {7,7}, {7,7}, {7,7}, {7,7}, {-7,7}, {-7,7}, {-7,7}, {-7,7},
	{-7,7}, {-7,7}, {-7,7}, {-7,7}, {6,7}, {6,7}, {6,7}, {6,7}, {6,7}, {6,7},
	{6,7}, {6,7}, {-6,7}, {-6,7}, {-6,7}, {-6,7}, {-6,7}, {-6,7}, {-6,7},
	{-6,7}, {5,7}, {5,7}, {5,7}, {5,7}, {5,7}, {5,7}, {5,7}, {5,7}, {-5,7},
	{-5,7}, {-5,7}, {-5,7}, {-5,7}, {-5,7}, {-5,7}, {-5,7}, {4,6}, {4,6}, {4,6},
	{4,6}, {4,6}, {4,6}, {4,6}, {4,6}, {4,6}, {4,6}, {4,6}, {4,6}, {4,6}, {4,6},
	{4,6}, {4,6}, {-4,6}, {-4,6}, {-4,6}, {-4,6}, {-4,6}, {-4,6}, {-4,6},
	{-4,6}, {-4,6}, {-4,6}, {-4,6}, {-4,6}, {-4,6}, {-4,6}, {-4,6}, {-4,6}
};

static VLCtabMb MVtab2[] = 
{
	{32,12}, {-32,12}, {31,12}, {-31,12}, {30,11}, {30,11}, {-30,11}, {-30,11},
	{29,11}, {29,11}, {-29,11}, {-29,11}, {28,11}, {28,11}, {-28,11}, {-28,11},
	{27,11}, {27,11}, {-27,11}, {-27,11}, {26,11}, {26,11}, {-26,11}, {-26,11},
	{25,11}, {25,11}, {-25,11}, {-25,11}, {24,10}, {24,10}, {24,10}, {24,10},
	{-24,10}, {-24,10}, {-24,10}, {-24,10}, {23,10}, {23,10}, {23,10}, {23,10},
	{-23,10}, {-23,10}, {-23,10}, {-23,10}, {22,10}, {22,10}, {22,10}, {22,10},
	{-22,10}, {-22,10}, {-22,10}, {-22,10}, {21,10}, {21,10}, {21,10}, {21,10},
	{-21,10}, {-21,10}, {-21,10}, {-21,10}, {20,10}, {20,10}, {20,10}, {20,10},
	{-20,10}, {-20,10}, {-20,10}, {-20,10}, {19,10}, {19,10}, {19,10}, {19,10},
	{-19,10}, {-19,10}, {-19,10}, {-19,10}, {18,10}, {18,10}, {18,10}, {18,10},
	{-18,10}, {-18,10}, {-18,10}, {-18,10}, {17,10}, {17,10}, {17,10}, {17,10},
	{-17,10}, {-17,10}, {-17,10}, {-17,10}, {16,10}, {16,10}, {16,10}, {16,10},
	{-16,10}, {-16,10}, {-16,10}, {-16,10}, {15,10}, {15,10}, {15,10}, {15,10},
	{-15,10}, {-15,10}, {-15,10}, {-15,10}, {14,10}, {14,10}, {14,10}, {14,10},
	{-14,10}, {-14,10}, {-14,10}, {-14,10}, {13,10}, {13,10}, {13,10}, {13,10},
	{-13,10}, {-13,10}, {-13,10}, {-13,10}
};

***/

#endif // _MP4_MBLOCK_H_

/*** *** ***/

extern int macroblock();
extern int block();
extern int blockIntra();
extern int blockInter();