TI DSP DM642下对图像做二值化处理的使用实例

/**********************************************************/ /* Display parameter definitions based on 625/50 format */ /**********************************************************/ /* ................. */ /* Define frame size */ /* ................. */ /* no of pixels per frame line including horizontal blanking*/ /*定义每行的像素数，包括消隐行*/ #define VD_FRM_WIDTH 864 /*定义每帧的行数，包括消隐行*/ #define VD_FRM_HEIGHT 625 /* total noof lines per frame */ /*定义每帧的大小*/ #define VD_FRM_SIZE (VD_FRM_WIDTH * VD_FRM_HEIGHT) /* ................... */ /* Horizontal blanking */ /* ................... */ /*行消隐出现的像素位置*/ #define VD_HBLNK_START 720 /* starting location of EAV */ /*行消急结束的像素位置*/ #define VD_HBLNK_STOP 862 /* starting location of SAV */ /*消隐的像素数*/ #define VD_HBLNK_SIZE (VD_HBLNK_STOP - VD_HBLNK_START +2/*EAV*/) /* (138) EAV, SAV inclusive */ /* ............................ */ /* Vertical blanking for field1 */ /* ............................ */ /*奇场的场消隐设置*/ #define VD_VBLNK_XSTART1 720 /* pixel on which VBLNK active */ /* edge occurs for field1 */ #define VD_VBLNK_YSTART1 642 /* line on which VBLNK active */ /* edge occurs for field1 */ #define VD_VBLNK_XSTOP1 720 /* pixel on which VBLNK inactive */ /* edge occurs for field1 */ #define VD_VBLNK_YSTOP1 23 /* line on which VBLNK inactive */ /* edge occurs for field1 */ /* ............................ */ /* Vertical blanking for field2 */ /* ............................ */ /*偶场的场消隐设置*/ #define VD_VBLNK_XSTART2 360 /* pixel on which VBLNK active */ /* edge occurs for field2 */ #define VD_VBLNK_YSTART2 311 /* line on which VBLNK active */ /* edge occurs for field2 */ #define VD_VBLNK_XSTOP2 360 /* pixel on which VBLNK inactive */ /* edge occurs for field2 */ #define VD_VBLNK_YSTOP2 336 /* line on which VBLNK inactive */ /* edge occurs for field2 */ /* ................................................. */ /* Define vertical blanking bit(VD_VBITn) reg values */ /* ................................................. */ /*第一场重直消隐设置与清除的所在的行数*/ /* first line with an EAV with V=1 indicating the start of Field1 vertical blanking */ #define VD_VBIT_SET1 1 /* first line with an EAV with V=0 indicating the start of Field1 active display*/ #define VD_VBIT_CLR1 23 #define VD_VBLNK1_SIZE (VD_VBIT_CLR1 - VD_VBIT_SET1) /* 19 lines */ /*第二场重直消隐设置与清除的所在的行数*/ /* first line with an EAV with V=1 indicating the start of Field2 vertical blanking*/ #define VD_VBIT_SET2 311 /* first line with an EAV with V=0 indicating the start of Field2 active display*/ #define VD_VBIT_CLR2 336 #define VD_VBLNK2_SIZE (VD_VBIT_CLR2 - VD_VBIT_SET2) /* 19 lines */ /* ............ */ /* Field timing */ /* ............ */ /* pixel on the first line of Field1 on which FLD ouput is de-asserted*/ #define VD_FIELD1_XSTART 720 /* line on which FLD is de-asserted */ #define VD_FIELD1_YSTART 1 /* pixel on the first line of Field1 on which FLD ouput is asserted */ #define VD_FIELD2_XSTART 360 /* line on which FLD is asserted */ #define VD_FIELD2_YSTART 313 /* .................................... */ /* Define field bit(VD_FBIT) reg values */ /* .................................... */ #define VD_FBIT_CLR 1 /* first line with an EAV with F=0 indicating Field 1 display*/ #define VD_FBIT_SET 313 /* first line with an EAV with F=1 indicating Field 2 display*/ /* ................................ */ /* Define horzontal synchronization */ /* ................................ */ #define VD_HSYNC_START 752 #define VD_HSYNC_STOP 782 /* .......................................... */ /* Define vertical synchronization for field1 */ /* .......................................... */ #define VD_VSYNC_XSTART1 752 #define VD_VSYNC_YSTART1 1 #define VD_VSYNC_XSTOP1 752 #define VD_VSYNC_YSTOP1 3 /* .......................................... */ /* Define vertical synchronization for field2 */ /* .......................................... */ #define VD_VSYNC_XSTART2 320 #define VD_VSYNC_YSTART2 313 #define VD_VSYNC_XSTOP2 320 #define VD_VSYNC_YSTOP2 316 /* ........................................ */ /* Define image offsets for both the fields */ /* which are zero in this example */ /* ........................................ */ #define VD_IMG_HOFF1 0 #define VD_IMG_VOFF1 0 #define VD_IMG_HOFF2 0 #define VD_IMG_VOFF2 0 /* ................................................. */ /* Define image active vertical and horizontal sizes */ /* ................................................. */ #define VD_IMG_HSIZE1 720 /* field1 horizontal image size */ #define VD_IMG_VSIZE1 288 /* field1 vertical image size */ #define VD_IMG_HSIZE2 720 /* field2 horizontal image size */ #define VD_IMG_VSIZE2 288 /* field2 vertical image size */ /* Manipulate field1 and field2 image sizes */ #define VD_IMAGE_SIZE1 (VD_IMG_HSIZE1 * VD_IMG_VSIZE1) #define VD_IMAGE_SIZE2 (VD_IMG_HSIZE2 * VD_IMG_VSIZE2) /* Define threshold values in double-words. Both fields should */ /* have same threshold value */ #define VD_VDTHRLD1 (VD_IMG_HSIZE1/8) /* line length in */ #define VD_VDTHRLD2 VD_VDTHRLD1 /* double-words */ /* Define number of events to be generated for field1 and field2 */ #define VD_DISPEVT1 (VD_IMAGE_SIZE1 / (VD_VDTHRLD1 * 8)) #define VD_DISPEVT2 (VD_IMAGE_SIZE2 / (VD_VDTHRLD2 * 8)) #define DISPLAY_FRAME_COUNT 1 /* in this example */ /* ............................................ */ /* EDMA parameters for display Y event that are */ /* specific to this example. */ /* ............................................ */ /* VD_VDTHRLDn is in double-words and 32-bit element size */ #define VD_Y_EDMA_ELECNT (VD_VDTHRLD1 * 2) #define VD_Y_EDMA_FRMCNT ((VD_DISPEVT1 + VD_DISPEVT2) * DISPLAY_FRAME_COUNT) /******************************************************************/ /* Description : 8.bit BT.656 non.continuous frame display */ /* */ /* Some important field descriptions: */ /* */ /* DMODE = 000, 8.bit BT.656 mode */ /* CON = 0 */ /* FRAME = 1, display frame */ /* DF2 = 0 */ /* DF1 = 0, (8.bit non.continuous frame display) */ /* SCALE = 0, no scaling */ /* RESMPL = 0, no resampling */ /* DPK = X, not used in 8.bit display */ /* RSYNC = X, used in Raw mode(Enable second synchronized raw */ /* data channel) */ /* RGBX = X, used in Raw mode(RGB extract enable. Perform */ /* 3/4 FIFO unpacking) */ /* VCTL1S = 00, output HSYNC */ /* VCTL2S = 00, output VSYNC */ /* VCTL3S = 0, output CBLNK */ /* HXS = 0, VCTL1 is an output */ /* VXS = 0, VCTL2 is an output */ /* FXS = 0, VCTL3 is an output */ /* PVPSYN = 0, no previous port synchronization */ /******************************************************************/ #include <vportdis.h> #include "vportcap.h" /*................................................................ */ /* global variable declarations */ /* ............................................................... */ // Uint32 disChaAYSpace = 0x80000000; // Uint32 disChaACbSpace = 0x800675c0; // Uint32 disChaACrSpace = 0x8009b0a0; #pragma DATA_SECTION(disChaAYSpace, ".disChaAYSpace") /* buffer to store captured Y-data */ Uint8 disChaAYSpace[720*588]; #pragma DATA_SECTION(disChaACbSpace, ".disChaACbSpace") /* buffer to store captured Cb-data */ Uint8 disChaACbSpace[360*588]; #pragma DATA_SECTION(disChaACrSpace, ".disChaACrSpace") /* buffer to store captured Cr-data */ Uint8 disChaACrSpace[360*588]; /* handle of vp that to be configured */ VP_Handle vpDisplayHandle; EDMA_Handle hEdmaVPDispY; EDMA_Handle hEdmaVPDispCb; EDMA_Handle hEdmaVPDispCr; Int32 edmaDispYTccNum = 0; /* EDMA tcc for Y channel */ Int32 edmaDispCbTccNum = 0; /* EDMA tcc for Cb channel */ Int32 edmaDispCrTccNum = 0; /* EDMA tcc for Cb channel */ volatile Uint32 displayFrameCount = 0; /* no of frames that are */ /* displayed */ volatile Uint32 disp