1、#include colorbar.h/如果显示彩色滚动条,就必须有此头文件;否则不需要evmdm642_vcapparams.hevmdm642_vdisparams.h/* heap IDs defined in the BIOS configuration file */extern Int EXTERNALHEAP;/DSP/BIOS * = main =main() /*/ /* open CSL DAT module for fast copy */ CSL_init(); /调用任何CSL库中的函数,必须先在此调用函数 CACHE_clean(CACHE_L2ALL, 0, 0)
2、; /清洗Cache模式 CACHE_setL2Mode(CACHE_256KCACHE); /设置Cache模式CACHE_enableCaching(CACHE_EMIFA_CE00); /使能EMIFA CE0空间CACHE_enableCaching(CACHE_EMIFA_CE01); /使能EMIFA CE1空间 DAT_open(DAT_CHAANY, DAT_PRI_LOW, DAT_OPEN_2D); /打开数据传输 * = tskVideoLoopback = * video loopback function.void tskVideoLoopback() Int i;
3、int m_nWork; Int status; FVID_Handle disChan; /设置设备句柄 Int frames = 0; FVID_Frame *disFrameBuf;Int numLinesDis = EVMDM642_vDisParamsChan.imgVSizeFld1;/设置显示的行数,VGA为480,PAL为576Int numLinesCap =EVMDM642_vCapParamsChan.fldYStop1 - /设置采集行数 EVMDM642_vCapParamsChan.fldYStrt1+1; /*判断是显示区域大,还是采集区域大,取其小者*/ Int
4、 numLines = (numLinesDis numLinesCap) ? numLinesCap : numLinesDis;#ifdef _LOOPBACK FVID_Handle capChan; /*设置每行显示的像素数,PAL制为720*/ Int numPixels = EVMDM642_vCapParamsChan.fldXStop1 - EVMDM642_vCapParamsChan.fldXStrt1+1; FVID_Frame *capFrameBuf; /*设置采集图像一行的总像素*/ Int capLinePitch = EVMDM642_vCapParamsCha
5、n.fldXStop1 - /*设置显示图像一行的总像素*/ Int disLinePitch = EVMDM642_vDisParamsChan.imgHSizeFld1;#ifdef _PIP VPORTCAP_Params EVMDM642_vCapParamsChan2 = EVMDM642_vCapParamsChan; FVID_Handle capChan2; FVID_Frame *capFrameBuf2; Int yPitch = capLinePitch 1; Int cPitch = (capLinePitch 2) + 7) & ( 7);#endif#endif n
6、umLines *= 2; /* both fields */如果输出为PAL制,前面numLinesCap不要*2,这里再*2? /* allocate both capture and display frame buffers */ /* in external heap memory */ /*分配采集和显示图像的存放缓冲区*/ EVMDM642_vCapParamsChan.segId = EXTERNALHEAP; EVMDM642_vDisParamsChan.segId = EXTERNALHEAP; EVMDM642_vDisParamsSAA7105.hI2C = EVMD
7、M642_I2C_hI2C; EVMDM642_vCapParamsSAA7115.hI2C = EVMDM642_I2C_hI2C; /* initialization of capture driver */ /*建立并初始化采集设备对象*/ capChan = FVID_create(/VP0CAPTURE/A/0, IOM_INPUT, &status, (Ptr)&EVMDM642_vCapParamsChan, NULL); EVMDM642_vCapParamsChan2.scale = VPORT_SCALING_ENABLE; EVMDM642_vCapParamsChan2
8、.fldOp = VPORT_FLDOP_FLD1; EVMDM642_vCapParamsChan2.thrld =1; capChan2 = FVID_create(/VP1CAPTURE/A/1EVMDM642_vCapParamsChan2, NULL); /* initialization of display driver */ /*建立并初始化显示设备对象*/ disChan = FVID_create(/VP2DISPLAY, IOM_OUTPUT, &EVMDM642_vDisParamsChan, NULL); /* configure video encoder & de
9、coder */ for ( m_nWork=0;m_nWork6;m_nWork+ )/这里的循环有何用?一直没有弄清楚 /*为保证采集和显示设备正常工作,为其设置驱动*/ FVID_control(disChan, VPORT_CMD_EDC_BASE + EDC_CONFIG, (Ptr)&EVMDM642_vDisParamsSAA7105); FVID_control(capChan, VPORT_CMD_EDC_BASE + EDC_CONFIG, EVMDM642_vCapParamsSAA7115); EVMDM642_vCapParamsSAA7115.aFmt = SAA7
10、115_AFMT_COMPOSITE; FVID_control(capChan2, VPORT_CMD_EDC_BASE+EDC_CONFIG, /* start capture & display operation */ /*开始采集和显示操作*/ FVID_control(disChan, VPORT_CMD_START, NULL); FVID_control(capChan, VPORT_CMD_START, NULL); FVID_control(capChan2, VPORT_CMD_START, NULL); /*/ /* request a frame buffer fro
11、m display & capture driver */ /*分配采集和显示一帧图像存放的缓冲区*/ FVID_alloc(disChan, &disFrameBuf); FVID_alloc(capChan, &capFrameBuf); FVID_alloc(capChan2, &capFrameBuf2); frames +; while(1)/* loop forever */ /* copy data from capture buffer to display buffer */ /*/ /*将采集缓冲区的内容复制到显示缓冲区*/ for(i = 0; i frame.iFrm.
12、y1 + i * capLinePitch, disFrameBuf-frame.iFrm.y1 + i * disLinePitch, numPixels);frame.iFrm.cb1 + i * (capLinePitch 1), frame.iFrm.cb1 + i * (disLinePitch 1), numPixels1);frame.iFrm.cr1 + i * (capLinePitch frame.iFrm.cr1 + i * (disLinePitch #ifdef _PIP (numLines DAT_copy(capFrameBuf2-frame.iFrm.y1 +
13、i * yPitch, frame.iFrm.y1 + i * disLinePitch + (disLinePitch (numPixels1);frame.iFrm.cb1 + i * cPitch, 1)2 ), (numPixels 2);frame.iFrm.cr1 + i * cPitch, +(disLinePitch 2), DAT_wait(DAT_XFRID_WAITALL); FVID_exchange(capChan, &/采集一帧图像 FVID_exchange(capChan2, else /如果定义CAPTURE则填充图像缓冲区为8条带 fillFrmBuf(
14、&disFrameBuf-frame.iFrm, EVMDM642_vDisParamsChan.imgHSizeFld1, EVMDM642_vDisParamsChan.imgVSizeFld1 + EVMDM642_vDisParamsChan.imgVSizeFld2, frames % 360); FVID_exchange(disChan, &/将显示缓冲区中一帧图像送给显示设备 /处理下一帧图像 实验5.20 视频图像处理-取反1将程序改成屏幕1/4进行取反,而其他不变在主程序中ICETEKDM642PCIImageProcessReverse()函数前加if(i(numLine
15、s/2),即:if(i(numLines/2) ICETEKDM642PCIImageProcessReverse();并将ICETEKDM642PCIImageProcessReverse()函数中的循环体改为如下: for ( i=0;iframe.iFrm.cb1+i*(capLinePitch1),nMemTemp,numPixelsDAT_wait(m_nID);ICETEKDM642PCIImageProcessReverse();DAT_copy(nMemTemp,disFrameBuf-frame.iFrm.cb1+i*(disLinePitch1),numPixelsfor
16、( m_nWork=0;numPixels1;m_nWork+ ) nMemTempm_nWork=0x080; frame.iFrm.y1+i*disLinePitch,numPixels); DAT_copy(nMemTemp,disFrameBuf-frame.iFrm.cr1+i*(disLinePitch出现的问题:图像显示时右半屏有闪烁?实验5.21 视频图像处理-直方图统计程序注释:源程序中定义的js变量不知为何用,于是就删除了ICETEK-DM642-PCI.h/工作变量#pragma DATA_SECTION(nMemTemp, .INTPROCBUFF);#pragma D
17、ATA_ALIGN(nMemTemp,128);unsigned char nMemTemp720;#pragma DATA_SECTION(nHisto, #pragma DATA_ALIGN(nHisto,128);unsigned int nHisto256;unsigned char imgHistoHISTOHIGH*HISTOWIDTH;/128*256int mi,mj,m_nWork1;unsigned int m_nWork,*pWork;unsigned char *pImg,*pImg1;void ICETEKDM642PCIBoardInit()/直方图显示区域初始化
18、for ( mi=0;miHISTOHIGH*HISTOWIDTH;mi+ ) imgHistomi=1;256; nHistomi=0;#pragma CODE_SECTION(ICETEKDM642PCIStatistic,.text1)void ICETEKDM642PCIStatistic()/统计一帧图像的直方图 int i;720; nHistonMemTempi+;#pragma CODE_SECTION(ICETEKDM642PCIHistogram,void ICETEKDM642PCIHistogram()/将统计的一帧图像的直方图显示在显示区域上 m_nWork=0;mi
19、+ )/找出各灰度级别像素总数最大的 if ( m_nWorknHistomi ) m_nWork=nHistomi; m_nWork/=(HISTOHIGH-1);/求出比例因子(即像素总数最大值/显示区域的高度)mi+ )/转换各灰度级,将其映射到显示区域(即:各个灰度级的像素/比例因子) nHistomi/=m_nWork;mi+ )/将显示区域置白 pImg = imgHisto; /pImg指针指向显示区域首地址 pImg += (HISTOHIGH-1)*HISTOWIDTH); /mImg指针指向显示区域尾地址 pImg+;/? for ( mi=1;255;mi+,pImg+
20、) for ( mj=0,pImg1=pImg;mjnHistomi;mj+,pImg1-=HISTOWIDTH ) (*pImg1)=HISTOCOLOR;/对应的显示区域填充颜色,这里还是不太明白mi+ ) /清除直方图统计的数组实验5.22 视频图像处理-直方图均衡化增强直方图均衡化,其实质是图像增强的一种。math.h#pragma DATA_SECTION(fHisto, #pragma DATA_ALIGN(fHisto,128);float fHisto256;/#pragma DATA_SECTION(lut, #pragma DATA_ALIGN(lut,128);unsigned char lut256;/保存新的灰度级,是通过上一帧图像计算的unsigned int m_nWork,*pWork,js;float m_fWork;void ICETEKDM642PCIBoardInit() js
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