audio.h

ESS3890+SL原代码（1*16内存）

/* Copyright 1996, ESS Technology, Inc.					*/
/* SCCSID @(#)audio.h	4.4 02/25/04 */ 

/*
 * $Log$
 */

#ifndef __AUDIO_H__
#define __AUDIO_H__

#include "common.h"


#define LEFT_LEFT               0
#define RIGHT_RIGHT             1
#define LEFT_RIGHT              2       /* stereo */
#define LEFT_RIGHT_AVG          3       /* average both channels */
#define SURROUND		4	/* spatializer */


/***********************************************************************
*
*  MPEG Audio Related Stuff, private to mpgaudio.c.
*
***********************************************************************/
#define         MONO                    1
#define         STEREO                  2
#define         SBLIMIT                 32

#define         MPG_MD_STEREO           0
#define         MPG_MD_JOINT_STEREO     1
#define         MPG_MD_DUAL_CHANNEL     2
#define         MPG_MD_MONO             3

#define		SAMP_48K_S	0x30341200	/* stereo modes */
#define		SAMP_44K_S	0x302c2200
#define		SAMP_32K_S	0x301c1200
#define		SAMP_16K_S	0x300c1200
#define		SAMP_8K_S	0x30041200
#define		SAMP_48K_M	0x30301200	/* mono modes */
#define		SAMP_44K_M	0x30282200
#define		SAMP_32K_M	0x30181200
#define		SAMP_16K_M	0x30081200
#define		SAMP_8K_M	0x30001200

#define		PLAYBACK_MODE	SAMP_44K_S

/**********************************/
/* subband limits from table 3B-2 */
/**********************************/

#define SBLIM3B2A 27
#define SBLIM3B2B 30
#define SBLIM3B2C 8
#define SBLIM3B2D 12

#ifdef MKTABLE
/**********************/
/* table of nbal's/sb */
/**********************/
char nbal3B2b[SBLIM3B2B] = {
	4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 
    3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 
    2, 2, 2, 2, 2, 2, 2};
char nbal3B2d[SBLIM3B2D] = {
	4, 4, 
    3, 3, 3, 3, 3, 3, 3, 3, 3, 3};
			      
/***********************************************/
/* nbal index translation to step-table index. */
/***********************************************/
char bound3B2b[SBLIM3B2B] = {
     0,  0,  0, 16, 16, 16, 16, 16, 16, 16, 16, 32, 32, 32, 32,
    32, 32, 32, 32, 32, 32, 32, 32, 48, 48, 48, 48, 48, 48, 48};

char index3B2b[4*16] = {
    0, 0, 2, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, /* 0 -  2 */
    0, 0, 1, 2, 3, 4, 5, 6, 7,  8,  9, 10, 11, 12, 13, 16, /* 3 - 10 */
    0, 0, 1, 2, 3, 4, 5, 16, 0, 0, 0, 0, 0, 0, 0, 0,       /* 11- 22 */
    0, 0, 1, 16,0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};      /* 23- 29 */

char bound3B2d[SBLIM3B2D] = {
    0, 0, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16};

char index3B2d[2*16] = {
    0, 0, 1, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, /* 0 - 1 */
    0, 0, 1, 3, 4, 5, 6, 7, 0, 0, 0, 0, 0, 0, 0, 0};      /* 2 -11 */
char look_div3[32] = {
    0x3f, 0xf,  0x1f, 0x33, 0x3,  0x13, 0x37, 0x7,
    0x17, 0x3c, 0xc,  0x1c, 0x30, 0x0,  0x10, 0x34,
    0x4,  0x14, 0x3d, 0xd,  0x1d, 0x31, 0x1,  0x11,
    0x35, 0x5,  0x15, 0x3f, 0xf,  0x1f, 0x33, 0x3 
};

unsigned short look_div5[128] = {
    0xccc0, 0xecc0, 0x0cc0, 0x2cc0, 0x4cc0, 0xcec0, 0xeec0, 0x0ec0,
    0x2ec0, 0x4ec0, 0xc0c0, 0xe0c0, 0x00c0, 0x20c0, 0x40c0, 0xc2c0,
    0xe2c0, 0x02c0, 0x22c0, 0x42c0, 0xc4c0, 0xe4c0, 0x04c0, 0x24c0,
    0x44c0, 0xcce0, 0xece0, 0x0ce0, 0x2ce0, 0x4ce0, 0xcee0, 0xeee0,
    0x0ee0, 0x2ee0, 0x4ee0, 0xc0e0, 0xe0e0, 0x00e0, 0x20e0, 0x40e0,
    0xc2e0, 0xe2e0, 0x02e0, 0x22e0, 0x42e0, 0xc4e0, 0xe4e0, 0x04e0,
    0x24e0, 0x44e0, 0xcc00, 0xec00, 0x0c00, 0x2c00, 0x4c00, 0xce00,
    0xee00, 0x0e00, 0x2e00, 0x4e00, 0xc000, 0xe000, 0x0000, 0x2000,
    0x4000, 0xc200, 0xe200, 0x0200, 0x2200, 0x4200, 0xc400, 0xe400,
    0x0400, 0x2400, 0x4400, 0xcc20, 0xec20, 0x0c20, 0x2c20, 0x4c20,
    0xce20, 0xee20, 0x0e20, 0x2e20, 0x4e20, 0xc020, 0xe020, 0x0020,
    0x2020, 0x4020, 0xc220, 0xe220, 0x0220, 0x2220, 0x4220, 0xc420,
    0xe420, 0x0420, 0x2420, 0x4420, 0xcc40, 0xec40, 0x0c40, 0x2c40,
    0x4c40, 0xce40, 0xee40, 0x0e40, 0x2e40, 0x4e40, 0xc040, 0xe040,
    0x0040, 0x2040, 0x4040, 0xc240, 0xe240, 0x0240, 0x2240, 0x4240,
    0xc440, 0xe440, 0x0440, 0x2440, 0x4440, 0xccc0, 0xecc0, 0x0cc0
};

#ifdef USE_LOOK_DIV9
unsigned short look_div9[1024] = {
    0xccc0, 0xdcc0, 0xecc0, 0xfcc0, 0x0cc0, 0x1cc0, 0x2cc0, 0x3cc0,
    0x4cc0, 0xcdc0, 0xddc0, 0xedc0, 0xfdc0, 0x0dc0, 0x1dc0, 0x2dc0,
    0x3dc0, 0x4dc0, 0xcec0, 0xdec0, 0xeec0, 0xfec0, 0x0ec0, 0x1ec0,
    0x2ec0, 0x3ec0, 0x4ec0, 0xcfc0, 0xdfc0, 0xefc0, 0xffc0, 0x0fc0,
    0x1fc0, 0x2fc0, 0x3fc0, 0x4fc0, 0xc0c0, 0xd0c0, 0xe0c0, 0xf0c0,
    0x00c0, 0x10c0, 0x20c0, 0x30c0, 0x40c0, 0xc1c0, 0xd1c0, 0xe1c0,
    0xf1c0, 0x01c0, 0x11c0, 0x21c0, 0x31c0, 0x41c0, 0xc2c0, 0xd2c0,
    0xe2c0, 0xf2c0, 0x02c0, 0x12c0, 0x22c0, 0x32c0, 0x42c0, 0xc3c0,
    0xd3c0, 0xe3c0, 0xf3c0, 0x03c0, 0x13c0, 0x23c0, 0x33c0, 0x43c0,
    0xc4c0, 0xd4c0, 0xe4c0, 0xf4c0, 0x04c0, 0x14c0, 0x24c0, 0x34c0,
    0x44c0, 0xccd0, 0xdcd0, 0xecd0, 0xfcd0, 0x0cd0, 0x1cd0, 0x2cd0,
    0x3cd0, 0x4cd0, 0xcdd0, 0xddd0, 0xedd0, 0xfdd0, 0x0dd0, 0x1dd0,
    0x2dd0, 0x3dd0, 0x4dd0, 0xced0, 0xded0, 0xeed0, 0xfed0, 0x0ed0,
    0x1ed0, 0x2ed0, 0x3ed0, 0x4ed0, 0xcfd0, 0xdfd0, 0xefd0, 0xffd0,
    0x0fd0, 0x1fd0, 0x2fd0, 0x3fd0, 0x4fd0, 0xc0d0, 0xd0d0, 0xe0d0,
    0xf0d0, 0x00d0, 0x10d0, 0x20d0, 0x30d0, 0x40d0, 0xc1d0, 0xd1d0,
    0xe1d0, 0xf1d0, 0x01d0, 0x11d0, 0x21d0, 0x31d0, 0x41d0, 0xc2d0,
    0xd2d0, 0xe2d0, 0xf2d0, 0x02d0, 0x12d0, 0x22d0, 0x32d0, 0x42d0,
    0xc3d0, 0xd3d0, 0xe3d0, 0xf3d0, 0x03d0, 0x13d0, 0x23d0, 0x33d0,
    0x43d0, 0xc4d0, 0xd4d0, 0xe4d0, 0xf4d0, 0x04d0, 0x14d0, 0x24d0,
    0x34d0, 0x44d0, 0xcce0, 0xdce0, 0xece0, 0xfce0, 0x0ce0, 0x1ce0,
    0x2ce0, 0x3ce0, 0x4ce0, 0xcde0, 0xdde0, 0xede0, 0xfde0, 0x0de0,
    0x1de0, 0x2de0, 0x3de0, 0x4de0, 0xcee0, 0xdee0, 0xeee0, 0xfee0,
    0x0ee0, 0x1ee0, 0x2ee0, 0x3ee0, 0x4ee0, 0xcfe0, 0xdfe0, 0xefe0,
    0xffe0, 0x0fe0, 0x1fe0, 0x2fe0, 0x3fe0, 0x4fe0, 0xc0e0, 0xd0e0,
    0xe0e0, 0xf0e0, 0x00e0, 0x10e0, 0x20e0, 0x30e0, 0x40e0, 0xc1e0,
    0xd1e0, 0xe1e0, 0xf1e0, 0x01e0, 0x11e0, 0x21e0, 0x31e0, 0x41e0,
    0xc2e0, 0xd2e0, 0xe2e0, 0xf2e0, 0x02e0, 0x12e0, 0x22e0, 0x32e0,
    0x42e0, 0xc3e0, 0xd3e0, 0xe3e0, 0xf3e0, 0x03e0, 0x13e0, 0x23e0,
    0x33e0, 0x43e0, 0xc4e0, 0xd4e0, 0xe4e0, 0xf4e0, 0x04e0, 0x14e0,
    0x24e0, 0x34e0, 0x44e0, 0xccf0, 0xdcf0, 0xecf0, 0xfcf0, 0x0cf0,
    0x1cf0, 0x2cf0, 0x3cf0, 0x4cf0, 0xcdf0, 0xddf0, 0xedf0, 0xfdf0,
    0x0df0, 0x1df0, 0x2df0, 0x3df0, 0x4df0, 0xcef0, 0xdef0, 0xeef0,
    0xfef0, 0x0ef0, 0x1ef0, 0x2ef0, 0x3ef0, 0x4ef0, 0xcff0, 0xdff0,
    0xeff0, 0xfff0, 0x0ff0, 0x1ff0, 0x2ff0, 0x3ff0, 0x4ff0, 0xc0f0,
    0xd0f0, 0xe0f0, 0xf0f0, 0x00f0, 0x10f0, 0x20f0, 0x30f0, 0x40f0,
    0xc1f0, 0xd1f0, 0xe1f0, 0xf1f0, 0x01f0, 0x11f0, 0x21f0, 0x31f0,
    0x41f0, 0xc2f0, 0xd2f0, 0xe2f0, 0xf2f0, 0x02f0, 0x12f0, 0x22f0,
    0x32f0, 0x42f0, 0xc3f0, 0xd3f0, 0xe3f0, 0xf3f0, 0x03f0, 0x13f0,
    0x23f0, 0x33f0, 0x43f0, 0xc4f0, 0xd4f0, 0xe4f0, 0xf4f0, 0x04f0,
    0x14f0, 0x24f0, 0x34f0, 0x44f0, 0xcc00, 0xdc00, 0xec00, 0xfc00,
    0x0c00, 0x1c00, 0x2c00, 0x3c00, 0x4c00, 0xcd00, 0xdd00, 0xed00,
    0xfd00, 0x0d00, 0x1d00, 0x2d00, 0x3d00, 0x4d00, 0xce00, 0xde00,
    0xee00, 0xfe00, 0x0e00, 0x1e00, 0x2e00, 0x3e00, 0x4e00, 0xcf00,
    0xdf00, 0xef00, 0xff00, 0x0f00, 0x1f00, 0x2f00, 0x3f00, 0x4f00,
    0xc000, 0xd000, 0xe000, 0xf000, 0x0000, 0x1000, 0x2000, 0x3000,
    0x4000, 0xc100, 0xd100, 0xe100, 0xf100, 0x0100, 0x1100, 0x2100,
    0x3100, 0x4100, 0xc200, 0xd200, 0xe200, 0xf200, 0x0200, 0x1200,