www.pudn.com > 8202S.rar > cdplayer.c

/********************************************************** 
**  Description: for cd player 
**  Creater:liweihua 
**  Date:2003-9-3 
***********************************************************/ 
#include "global.h" 
#include "memmap0.h" 
#include "ircmd.h" 
 
#ifdef CD_PLAYER 
 
//declare the extern vars and consts 
extern BYTE bEqMaxKeepTm; 
extern void  osd_init_cdplayer();  
extern UINT8 *get_osdbuf_region_ptr(int _region, int _field); 
extern const UINT8 osd_header_offset[8]; 
#define	OSD_DATA_OFFSET(f)	    (osd_header_offset[(f)&OSD_FORMAT_MASK]) 
void osd_print_cdeq(UINT8 r,BYTE *p); 
void DisplaycdEq(void); 
 
//setting the band color 
#define GREENCOL        0xcccc 
#define BLUECOL      	0xbbbb 
#define BLACKCOL        0xdddd 
 
//setting the region of band 
#define AUDBAND_R       3 
 
//display the video in the player interface according to spectrum value(7 bands) 
void show_cdplayer(void) 
{ 
    osd_init_cdplayer(); 
    unEqMaxRef=0; 
    //bEqDisplay=1; 
    //setup_eq_display(1);//terry,2003/9/26 04:43PM 
    setup_eq_display(0xf);//nono 2003-10-22 15:14 change for new dsp code. 
} 
 
//Draw EQ status on screen by OSD 
// r : region for draw 
// *p: input 7 band EQ value  
//Each band energy range is 0 ~ 71  
void osd_print_cdeq(UINT8 r,BYTE *p) 
{ 
    UINT16  iWidth; 
    UINT16  i,j,iBlock,step,k; 
    UINT16  *pTopLine,*pBtmLine; 
    UINT16  unColor;     
    BYTE    bChannelVal[14];    //byte 13 is garbage 
    BYTE barlen; 
    iWidth = region[r].osd_w/4; 
    if(p_scan==0) 
    { 
    	barlen=72;    	 
    } 
    else 
    { 
    	barlen=144; 
    } 
     
    //calcuate the interpolate data 
    //The data is mapping to 0 ~ 71     
    for (i=0;i<14;i=i+2) 
    { 
        bChannelVal[i]=*p; 
        bChannelVal[i+1]=(*(p)+*(p+1))/2; 
        p++; 
    } 
     
    //check the last max value 
    for (i=0;i<13;i++) 
    { 
        if (bEqEnergyMax[i]<=bChannelVal[i]) 
        { 
            bEqEnergyMax[i]=bChannelVal[i]; 
        } 
        else 
        {                 
            if(p_scan==0)              
            { 
            if ( (bEqEnergyMax[i]!=0) && (bEqMaxKeepTm==0) ) 
                { 
                    bEqEnergyMax[i]=bEqEnergyMax[i]-1;    //reduce 1   
                }  
            } 
            else 
            { 
            if ( (bEqEnergyMax[i]>=2) && (bEqMaxKeepTm==0) ) 
                { 
                    bEqEnergyMax[i]=bEqEnergyMax[i]-2;    //reduce 1   
                }  
            }          
        } 
    } 
     
    if (bEqMaxKeepTm) 
        bEqMaxKeepTm--; 
    else 
        bEqMaxKeepTm=1; 
 
    //plot the background block 
    if (p_scan==0) { 
        pTopLine = (UINT16 *) (get_osdbuf_region_ptr(r,0)+iWidth*120/2); 
        pBtmLine = (UINT16 *) (get_osdbuf_region_ptr(r,1)+iWidth*120/2); 
    } else { 
        pTopLine = (UINT16 *) (get_osdbuf_region_ptr(r,0)+iWidth*120); 
        pBtmLine = (UINT16 *) (get_osdbuf_region_ptr(r,0)+iWidth*120); 
    } 
     
 
    //Totally has 72 block for each freq (0 ~ 71 ) 
    //pTopLine=pTopLine+iWidth; 
    if(p_scan==0)  step=1; 
    else step=1; 
     
     
    for (j=barlen;j>0;j--) 
    {       
        for(k=0;k=4)  
        { 
            p = (BYTE *)(SDRAM_BASE_CACHED+MEM_PCMYA*1024); 
                       			 
            for (i=0, j=0;i<7 ;i++)  
            { 
                UINT32  eqSrc; 
                UINT32  eqTemp; 
                 
                eqSrc = (((*p)<<8) | *(p+1));                 
                p+=3; 
 
                if (eqSrc > unEqMaxRef) 
					unEqMaxRef = eqSrc; 
 
                //normalize value to 0 ~ 25 
                if (unEqMaxRef==0)  
                    eqTemp = 0; 
                else 
                { 
                	if(p_scan==0) 
                		eqTemp = eqSrc*80/unEqMaxRef; 
                	else 
                		eqTemp = eqSrc*160/unEqMaxRef; 
                } 
 
                bEqValue[i] = eqTemp; 
				 
            if (bEqValue[i]<4)  
            { 
                    j++; 
                } 
            } 
 
            //adjust max refrence  
            if ( (j>=6) && (unEqMaxRef>400) ) 
                unEqMaxRef=unEqMaxRef-(unEqMaxRef/8); 
			 
            osd_print_cdeq(AUDBAND_R, bEqValue);			 
            bEqDisplay=1; 
        } else { 
            bEqDisplay++; 
        }  
    }  
 
#endif