📄 vlc_codes.h

📁 用MPEG-4对YUV视频文件编码压缩成divx视频文件
💻 H
📖 第 1 页 / 共 3 页
字号:
12 3 下一页
#ifndef _VLC_CODES_H_
#define _VLC_CODES_H_

#include "../portab.h"

typedef struct
{
	int32_t code;
	int8_t len;
}
VLC;

/*!
 ************************************************************************
 * \brief
 *    common tables for encoder and decoder, to get  vlc code in common use 
 *    
 *	  constants taken from momusys/vm_common/inlcude/max_level.h
 ************************************************************************
 */

/*===== LMAX =====*/
static char max_level[4][64] = {
/*===== intra, last = 0  =====	*/
	{							
	 27, 10, 5, 4, 3, 3, 3, 3,
	 2, 2, 1, 1, 1, 1, 1, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 },
/*===== intra, last = 1 =====	*/
	{						
	 8, 3, 2, 2, 2, 2, 2, 1,
	 1, 1, 1, 1, 1, 1, 1, 1,
	 1, 1, 1, 1, 1, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 },
/*===== inter, last = 0 =====	*/
	{							
	 12, 6, 4, 3, 3, 3, 3, 2,
	 2, 2, 2, 1, 1, 1, 1, 1,
	 1, 1, 1, 1, 1, 1, 1, 1,
	 1, 1, 1, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 },
/*===== inter, last = 1 =====	*/
	{							
	 3, 2, 1, 1, 1, 1, 1, 1,
	 1, 1, 1, 1, 1, 1, 1, 1,
	 1, 1, 1, 1, 1, 1, 1, 1,
	 1, 1, 1, 1, 1, 1, 1, 1,
	 1, 1, 1, 1, 1, 1, 1, 1,
	 1, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 }
};
/*===== RMAX =====*/
static char max_run[4][256] = {
/*===== intra, last = 0  =====	*/
	{						
	 0, 14, 9, 7, 3, 2, 1, 1,
	 1, 1, 1, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 },
/*===== intra, last = 1  =====	*/
	{							
	 0, 20, 6, 1, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 },
/*===== inter, last = 0  =====	*/
	{						
	 0, 26, 10, 6, 2, 1, 1, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 },
/*===== inter, last = 1  =====	*/
	{							
	 0, 40, 1, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 0, 0, 0, 0, 0, 0, 0, 0,
	 }
};

/*!
 ************************************************************************
 * \brief
 *    common tables for encoder  to get  coeff vlc code in common use 
 *	  DCT coefficients. Four tables, two for last = 0, two for last = 1.
 *    the sign bit must be added afterwards.  
 ************************************************************************
 */
/*==================================================================
  ====================== inter talbe,last=0  =======================
  ==================================================================*/

/*===== first part of coeffs for last = 0. Indexed by [run][level-1] =====*/

static VLC coeff_tab0[2][12] = {
	/*
	   run = 0 
	 */
	{
	 {0x02, 2}, {0x0f, 4}, {0x15, 6}, {0x17, 7},
	 {0x1f, 8}, {0x25, 9}, {0x24, 9}, {0x21, 10},
	 {0x20, 10}, {0x07, 11}, {0x06, 11}, {0x20, 11}
	 },
	/*
	   run = 1 
	 */
	{
	 {0x06, 3}, {0x14, 6}, {0x1e, 8}, {0x0f, 10},
	 {0x21, 11}, {0x50, 12}, {0x00, 0}, {0x00, 0},
	 {0x00, 0}, {0x00, 0}, {0x00, 0}, {0x00, 0}
	 }
};


/*===== rest of coeffs for last = 0. indexing by [run-2][level-1] =====*/

static VLC coeff_tab1[25][4] = {
	/*
	   run = 2 
	 */
	{
	 {0x0e, 4}, {0x1d, 8}, {0x0e, 10}, {0x51, 12}
	 },
	/*
	   run = 3 
	 */
	{
	 {0x0d, 5}, {0x23, 9}, {0x0d, 10}, {0x00, 0}
	 },
	/*
	   run = 4-26 
	 */
	{
	 {0x0c, 5}, {0x22, 9}, {0x52, 12}, {0x00, 0}
	 },
	{
	 {0x0b, 5}, {0x0c, 10}, {0x53, 12}, {0x00, 0}
	 },
	{
	 {0x13, 6}, {0x0b, 10}, {0x54, 12}, {0x00, 0}
	 },
	{
	 {0x12, 6}, {0x0a, 10}, {0x00, 0}, {0x00, 0}
	 },
	{
	 {0x11, 6}, {0x09, 10}, {0x00, 0}, {0x00, 0}
	 },
	{
	 {0x10, 6}, {0x08, 10}, {0x00, 0}, {0x00, 0}
	 },
	{
	 {0x16, 7}, {0x55, 12}, {0x00, 0}, {0x00, 0}
	 },
	{
	 {0x15, 7}, {0x00, 0}, {0x00, 0}, {0x00, 0}
	 },
	{
	 {0x14, 7}, {0x00, 0}, {0x00, 0}, {0x00, 0}
	 },
	{
	 {0x1c, 8}, {0x00, 0}, {0x00, 0}, {0x00, 0}
	 },
	{
	 {0x1b, 8}, {0x00, 0}, {0x00, 0}, {0x00, 0}
	 },
	{
	 {0x21, 9}, {0x00, 0}, {0x00, 0}, {0x00, 0}
	 },
	{
	 {0x20, 9}, {0x00, 0}, {0x00, 0}, {0x00, 0}
	 },
	{
	 {0x1f, 9}, {0x00, 0}, {0x00, 0}, {0x00, 0}
	 },
	{
	 {0x1e, 9}, {0x00, 0}, {0x00, 0}, {0x00, 0}
	 },
	{
	 {0x1d, 9}, {0x00, 0}, {0x00, 0}, {0x00, 0}
	 },
	{
	 {0x1c, 9}, {0x00, 0}, {0x00, 0}, {0x00, 0}
	 },
	{
	 {0x1b, 9}, {0x00, 0}, {0x00, 0}, {0x00, 0}
	 },
	{
	 {0x1a, 9}, {0x00, 0}, {0x00, 0}, {0x00, 0}
	 },
	{
	 {0x22, 11}, {0x00, 0}, {0x00, 0}, {0x00, 0}
	 },
	{
	 {0x23, 11}, {0x00, 0}, {0x00, 0}, {0x00, 0}
	 },
	{
	 {0x56, 12}, {0x00, 0}, {0x00, 0}, {0x00, 0}
12 3 下一页
💿 文件大小 4831 K
👤 上传用户 zhhw254774338
📂 所属分类压缩解压
🏷️ 相关标签

#MPEG #divx #YUV #视频
⌨️ 快捷键说明

复制代码 Ctrl + C
搜索代码 Ctrl + F
全屏模式 F11
切换主题 Ctrl + Shift + D
显示快捷键 ?
增大字号 Ctrl + =
减小字号 Ctrl + -