ADSP-BF533的例程源码52：字库算法源码

/******************************************************** * * 北京四维卓信电子有限公司 * http://www.openadsp.com * * 【OpenADSP开源社区】 * http://www.openadsp.com/bbs/ * ********************************************************/ #include <cdefBF533.h> section("sdram0_bank1") unsigned char DisplayBuffer[272][1440] ; section("sdram0_bank1") unsigned char DisplayBuffer_565[272][1440] ; section("sdram0_bank1") unsigned char TempBuffer_img[272][1440] ; section("sdram0_bank1") unsigned char Inputdata[391734]; void InitDMA(void) { int addr; addr = &DisplayBuffer_565; addr -= 1920; *pDMA0_START_ADDR = addr; *pDMA0_X_COUNT = 480; *pDMA0_X_MODIFY = 2; *pDMA0_Y_COUNT = 286; *pDMA0_Y_MODIFY = 2; *pDMA0_CONFIG = 0x1034; } void InitPPI(void) { *pPPI_CONTROL = 0x781e; *pPPI_DELAY = 0; *pPPI_COUNT = 479; *pPPI_FRAME = 286; } void InitTimer(void) { *pTIMER1_PERIOD = 525; *pTIMER1_WIDTH = 41; *pTIMER1_CONFIG = 0x00a9; *pTIMER2_PERIOD = 150150; *pTIMER2_WIDTH = 5250; *pTIMER2_CONFIG = 0x00a9; } void PPI_TMR_DMA_Enable(void) { *pDMA0_CONFIG |= 0x1; asm("ssync;"); InitTimer(); *pPPI_CONTROL |= 0x1; asm("ssync;"); *pTIMER_ENABLE|= 0x0006; asm("ssync;"); } void PPI_TMR_DMAR_Disable(void) { *pDMA0_CONFIG &= (~0x1); *pPPI_CONTROL &= (~0x1); } void bgrtorgb24(void) { int i,j; int a,b,c; for(i=0;i<272;i++) { for(j=0;j<1440;j++) { TempBuffer_img[i][j] = Inputdata[i*1440+j+54]; } } for(i=0;i<272;i++) { for(j=0;j<480;j++) { a = TempBuffer_img[i][j*3]; b = TempBuffer_img[i][j*3+1]; c = TempBuffer_img[i][j*3+2]; TempBuffer_img[i][j*3] = c; TempBuffer_img[i][j*3+1] = b; TempBuffer_img[i][j*3+2] = a; } } for(i=0;i<272;i++) { for(j=0;j<1440;j++) { DisplayBuffer[i][j] = (TempBuffer_img[271-i][j]); } } } void color_bar(void) { int i,j; for(i=0;i<272;i++) { for(j=0;j<40;j++) { DisplayBuffer[i][j*3+0] = 0x00; DisplayBuffer[i][j*3+1] = 0x00; DisplayBuffer[i][j*3+2] = 0x00; } for(j=40;j<80;j++) { DisplayBuffer[i][j*3+0] = 0xff; DisplayBuffer[i][j*3+1] = 0x00; DisplayBuffer[i][j*3+1] = 0x00; DisplayBuffer[i][j*3+2] = 0x00;//red } for(j=80;j<120;j++) { DisplayBuffer[i][j*3+0] = 0x00; DisplayBuffer[i][j*3+1] = 0xff; DisplayBuffer[i][j*3+2] = 0x00;//green } for(j=120;j<160;j++) { DisplayBuffer[i][j*3+0] = 0x00; DisplayBuffer[i][j*3+1] = 0x00; DisplayBuffer[i][j*3+2] = 0xff;//blue } for(j=160;j<200;j++) { DisplayBuffer[i][j*3+0] = 0xff; DisplayBuffer[i][j*3+1] = 0xff; DisplayBuffer[i][j*3+2] = 0x0;//red+green } for(j=200;j<240;j++) { DisplayBuffer[i][j*3+0] = 0x00; DisplayBuffer[i][j*3+1] = 0xff; DisplayBuffer[i][j*3+2] = 0xff;//red+blue } for(j=240;j<280;j++) { DisplayBuffer[i][j*3+0] = 0xff; DisplayBuffer[i][j*3+1] = 0x00; DisplayBuffer[i][j*3+2] = 0xff;//green+blue } for(j=280;j<320;j++) { DisplayBuffer[i][j*3+0] = 0xff; DisplayBuffer[i][j*3+1] = 0xff; DisplayBuffer[i][j*3+2] = 0xff; } for(j=320;j<360;j++) { DisplayBuffer[i][j*3+0] = 0x00; DisplayBuffer[i][j*3+1] = 0xff; DisplayBuffer[i][j*3+2] = 0x00;//green } for(j=360;j<400;j++) { DisplayBuffer[i][j*3+0] = 0x00; DisplayBuffer[i][j*3+1] = 0x00; DisplayBuffer[i][j*3+2] = 0xff;//blue } for(j=400;j<440;j++) { DisplayBuffer[i][j*3+0] = 0xff; DisplayBuffer[i][j*3+1] = 0xff; DisplayBuffer[i][j*3+2] = 0x0;//red+green } for(j=440;j<480;j++) { DisplayBuffer[i][j*3+0] = 0x00; DisplayBuffer[i][j*3+1] = 0xff; DisplayBuffer[i][j*3+2] = 0xff;//red+blue } } } void RGB888_RGB565(unsigned char *src, int src_len, unsigned char *dst) { int i = 0; int j = 0; if (src_len % 3 != 0) { return; } for (i = 0; i < src_len; i += 3) { dst[j+1] = src[i+2] &0xf8; //B dst[j+1] |= ((src[i+1]>>5) & 0x07); //GH dst[j] = ((src[i+1]<<3) & 0xe0); //GL dst[j] |= ((src[i]>>3) &0x1f); //R j += 2; } }