encode.c

本程序完成在dsp 的平台下

/*********************************************************************************/
/*
编写人      :  周闰
修改者      :  魏亚锋
完成时间    :  2002/11/25
函数名      :  main()
函数功能    ： 完成板上设备的初始化  
               以及在主函数中查询adv601的状态，从其中读出数据
               以及将视频、音频、控制数据组合成数据块
*/
/*****************************************************************/
/*********************************************************************************/
/*             this program is used for the TMS320C6211 chip                     */
/*********************************************************************************/
/*  the function of this program is to read the data from ADV601 and to control  */
/*  the speed of coding speed of ADV601, this program is also to complete the    */
/*  audio coding task and to multiplex the video stream and audio stream for     */
/*  outputting by MCBSP.                                                         */
/*********************************************************************************/
#define MAIN_MODEL
#include "globalvar.h"
#include "address.h"
#include "c6x.h"
#include "intr.h"
#include "regs.h"
#include "cache.h"
#include "dma.h"
#include "common.h"
#include "mcbsp.h"
#include "mcbspdrv.h"
#include "dma_util.h"
#include "emif.h"
#include "hpi.h"
#include "timer.h"
/******************Global various******************************/
unsigned int*  gpAddVideo[2];
unsigned int   e1transtartflag;
int   giPPchoose;
unsigned int   dmasendoffset;
unsigned char*	dmasendbaseaddr;
unsigned int   edmasendnum;
short *     audiobaseaddr;
unsigned int audiobufpoint;
  unsigned int* gpAudioAddr[2];
  unsigned int giAudioPPchoose;
  unsigned short audiodatabuf1[32];
  unsigned short audiodatabuf2[32];
int databuf1;
int databuf2;

unsigned int   databuflong;
	
/*******************************************************************************/
/* The following program is  main function                                      */                                
//gpAddVideo[2] ： 视频数据缓冲区地址数组
//gpAudioAddr[2] ： 音频数据缓冲区地址数组


/********************************************************************************/
void  main()
{
unsigned int i;
unsigned int Resetnum;
unsigned int temp,ttemp2;
unsigned int datatemp;
unsigned int *ptemp;
unsigned int *lptemp;
unsigned int *lptemp2;
unsigned int lastdata=0;
unsigned int invideodataflag;
unsigned int voidvedio=0;
unsigned int datanum=0;

	initiCache();    
	initiEMIF();
	my_intr_reset();
restart:
	gpAddVideo[0]	=(unsigned int *)0x80000000;//(unsigned int *)0x00003c00;//&databuf1;			//全局视频数据存储地址；
	gpAddVideo[1]	=(unsigned int *)0x80004000;//(unsigned int *)0x00005e00;//&databuf2;			//全局视频数据存储地址；
	gpAudioAddr[0]=(unsigned int*)audiodatabuf1;
	gpAudioAddr[1]=(unsigned int*)audiodatabuf2;
	initiInterrupt();
	audiobaseaddr=(short* )gpAudioAddr[0];
//	emptydatabuf();
	InitGlobalData();
//	emptyAdvFifo(56);
/*****Here should load logon Picture************************************/
	giPPchoose=0;
	ptemp=gpAddVideo[giPPchoose];
	ptemp[2]=0;
	databuflong=0;
	invideodataflag=0;
	i=0;
	Resetnum=0;
	audiobufpoint=0;
	while(1)	
	{
/*********************************************************/
/*		temp=*(volatile unsigned int *)(EDMA_CIPR_ADDR);
		while ((temp&0x2)==0) 
		{
			temp=*(volatile unsigned int *)(EDMA_CIPR_ADDR);
			i++;
			if (i>=250) temp=2;
		}
*/
/********************************************************/	
		temp=*(volatile unsigned int *) ADV601_DIR_REG3_ADDR;
		if ((temp&0x00000008)==8)
		//是否可以从adv601读取数据
		{
 			datatemp=*(volatile unsigned int *)ADV601_DIR_REG2_ADDR;
 			datanum++;
			if ((datatemp==0x40000000)&&(lastdata==0xffffffff))
			//是否桢头
			{
				if (voidvedio==0)
				//在两桢发一桢的处理中，是否是要发送的桢
				{
					if(databuflong<4000)
					{
						ptemp[2]=databuflong;
						edmasendnum=databuflong*4;
					}
					else
					{
						ptemp[2]=40;
						edmasendnum=40*4;
					}
					/*******Edma control manage*************/
					dmasendoffset=0;
					dmasendbaseaddr=(unsigned char*)ptemp;//gpAddVideo[giPPchoose];
					e1transtartflag=1;
					giPPchoose=(giPPchoose+1)%2;
					ptemp=gpAddVideo[giPPchoose];
					//组合数据块初始化
					ptemp[0]=0xffffffff;
					ptemp[1]=0x40000000;
					*(int*)0xa0380000=1;
					/*******Audio data manage*************/
//					audiodatatranaddr=(unsigned short*)(audiobaseaddr+audiobufpoint-audiobufpoint%8);
					lptemp=ptemp+4;
					lptemp2=(unsigned int*)audiobaseaddr;
//					ttemp=(int)audiobufpoint/18;
					ttemp2=audiobufpoint-(audiobufpoint%18);
					giAudioPPchoose=(giAudioPPchoose+1)%2;
					audiobaseaddr=(short *)gpAudioAddr[giAudioPPchoose];
					audiobufpoint=0;
					if(ttemp2>72)   ttemp2=72;
					for(i=0;i<ttemp2/2;i++)
						lptemp[i]=lptemp2[i];
					for(i=ttemp2/2;i<36;i++)
						lptemp[i]=0;
					invideodataflag=1;
					databuflong=40;
					i=0;
				}
				giFrameNum=datanum;
				datanum=0;				
				voidvedio=(voidvedio+1)%2;
			}
			else if ((datatemp==0x41000000)&&(lastdata==0xffffffff))
			//是否桢结束
			{
				giFrameNum=datanum;
				datanum=0;				
				invideodataflag=0;
			}
			else if (invideodataflag==1)
			//是否是桢内数据
			{
				ptemp[databuflong]=datatemp;
				databuflong++;
				if(databuflong>4500)
					invideodataflag=0;
			}
			lastdata=datatemp;
			Resetnum=0;
		}
		else
		{
			Resetnum++;
			if (Resetnum>=1000000) 
				goto restart;
		}
//		temp=*(volatile unsigned int *) ADV601_DIR_REG3_ADDR;
	}
}

/********************************************************************************/
void  initiEMIF()
{
	/*****DSP_CE0 is configured as SDRAM space*************************************/
	/*****DSP_CE1,DSP_CE2,DSP_CE3 is configured as Asynchronize RAM space*********/
	/***setup=2,strobe=7,hold=2.this value can be changed************************/
	/***DSP_CE1 is configured as 32bit SRAM space********************************/
	/***DSP_CE2 is configured as 32bit SRAM space********************************/
	/***DSP_CE3 is configured as 8bit SRAM(FLASH) space**************************/
	*(volatile unsigned int *)(EMIF_GBLCTL_ADDR)=0x00003060;	//clkout2 enabled to clock
	*(volatile unsigned int *)(EMIF_CECTL1_ADDR)=0x21e2c702;	//0x21e2c722 //DSP_CE1 is configured as flash
	*(volatile unsigned int *)(EMIF_CECTL0_ADDR)=0x00000090;	//DSP_CE0 is configured as SDRAM space
	*(volatile unsigned int *)(EMIF_CECTL2_ADDR)=0x2122c722;	//0x21e2c722;	//0xffffff2f
	*(volatile unsigned int *)(EMIF_CECTL3_ADDR)=0x21e2c722;	//
	*(volatile unsigned int *)(EMIF_SDCTL_ADDR)=0x57114000;
	*(volatile unsigned int *)(EMIF_SDTIM_ADDR)=0x01000400;	//the maximun is 0x411
	*(volatile unsigned int *)(EMIF_SDEXT_ADDR)=0x000d8d87;	//this setting may be problemic

	return;
}