/******************************************************************************
** INTERNAL FUNCTION DEFINITIONS
*******************************************************************************/
int main(void)
{
#ifndef _TMS320C6X
unsigned int index;
#endif
/* Setting the Master priority for the VPIF and LCD DMA controllers to highest level */
HWREG(SOC_SYSCFG_0_REGS + SYSCFG0_MSTPRI1) &= 0x00FFFFFF;
HWREG(SOC_SYSCFG_0_REGS + SYSCFG0_MSTPRI2) &= 0x0FFFFFFF;
#ifdef _TMS320C6X
/* Set MAR bits and configure L1 cache */
CacheEnableMAR((unsigned int)0xC0000000, (unsigned int)0x10000000);
CacheEnable(L1PCFG_L1PMODE_32K | L1DCFG_L1DMODE_32K );
#else
/* Sets up 'Level 1" page table entries.
* The page table entry consists of the base address of the page
* and the attributes for the page. The following operation is to
* setup one-to-one mapping page table for DDR memeory range and set
* the atributes for the same. The DDR memory range is from 0xC0000000
* to 0xCFFFFFFF. Thus the base of the page table ranges from 0xC00 to
* 0xCFF. Cache(C bit) and Write Buffer(B bit) are enabled only for
* those page table entries which maps to DDR RAM and internal RAM.
* All the pages in the DDR range are provided with R/W permissions */
for(index = 0; index < (4*1024); index++)
{
if((index >= 0xC00 && index < 0xD00)|| (index == 0x800))
{
pageTable[index] = (index << 20) | 0x00000C1E;
}
else
{
pageTable[index] = (index << 20) | 0x00000C12;
}
}
/* Configures translation table base register
* with pagetable base address. */
CP15TtbSet((unsigned int )pageTable);
/* Enables MMU */
CP15MMUEnable();
/* Enable Instruction Cache */
CP15ICacheEnable();
/* Enable Data Cache */
CP15DCacheEnable();
#endif
/* Allocate pointers to buffers */
buff_luma[0] = buff_luma1;
buff_luma[1] = buff_luma2;
buff_chroma[0] = buff_chroma1;
buff_chroma[1] = buff_chroma2;
/* Initializing palette for first buffer */
Rgb_buffer1[0] = 0x4000;
for (i = 1; i < 16; i++)
Rgb_buffer1[i] = 0x0000;
videoTopRgb1 = Rgb_buffer1 + i;
/* Initializing palette for second buffer */
Rgb_buffer2[0] = 0x4000;
for (i = 1; i < 16; i++)
Rgb_buffer2[i] = 0x0000;
videoTopRgb2 = Rgb_buffer2 + i;
/* Power on VPIF */
PSCModuleControl(SOC_PSC_1_REGS, HW_PSC_VPIF, PSC_POWERDOMAIN_ALWAYS_ON,
PSC_MDCTL_NEXT_ENABLE);
/* Initializing ARM/DSP INTC */
SetupIntc();
/* Initialize I2C and program UI GPIO expander, TVP5147, and ADV7343 via I2C */
I2CPinMuxSetup(0);
/* enable video via gpio expander to ensure we have exclusive access to the bus */
I2CCodecIfInit(SOC_I2C_0_REGS, INT_CHANNEL_I2C, I2C_SLAVE_UI_EXPANDER);
I2CGPIOInit(SOC_I2C_0_REGS);
I2CGPIOSetOutput(SOC_I2C_0_REGS);
/*Initialize the TVP5147 to accept composite video */
I2CCodecIfInit(SOC_I2C_0_REGS, INT_CHANNEL_I2C,
I2C_SLAVE_CODEC_TVP5147_2_COMPOSITE);
TVP5147CompositeInit(SOC_I2C_0_REGS);
/* Setup VPIF pinmux */
VPIFPinMuxSetup();
/* Setup LCD */
SetUpLCD();
/* Initialize VPIF */
SetUpVPIFRx();
VPIFDMARequestSizeConfig(SOC_VPIF_0_REGS, VPIF_REQSIZE_ONE_TWENTY_EIGHT);
VPIFEmulationControlSet(SOC_VPIF_0_REGS, VPIF_HALT);
/* Initialize buffer addresses for 1st frame*/
VPIFCaptureFBConfig(SOC_VPIF_0_REGS, VPIF_CHANNEL_0, VPIF_TOP_FIELD,
VPIF_LUMA, (unsigned int) buff_luma[0], CAPTURE_IMAGE_WIDTH*2);
VPIFCaptureFBConfig(SOC_VPIF_0_REGS, VPIF_CHANNEL_0, VPIF_TOP_FIELD,
VPIF_CHROMA, (unsigned int) buff_chroma[0], CAPTURE_IMAGE_WIDTH*2);
VPIFCaptureFBConfig(SOC_VPIF_0_REGS, VPIF_CHANNEL_0, VPIF_BOTTOM_FIELD,
VPIF_LUMA, (unsigned int) (buff_luma[0] + CAPTURE_IMAGE_WIDTH), CAPTURE_IMAGE_WIDTH*2);
VPIFCaptureFBConfig(SOC_VPIF_0_REGS, VPIF_CHANNEL_0, VPIF_BOTTOM_FIELD,
VPIF_CHROMA, (unsigned int) (buff_chroma[0] + CAPTURE_IMAGE_WIDTH), CAPTURE_IMAGE_WIDTH*2);
/* configuring the base ceiling */
RasterDMAFBConfig(SOC_LCDC_0_REGS, (unsigned int) Rgb_buffer2,
(unsigned int) (Rgb_buffer2 + DISPLAY_IMAGE_WIDTH * DISPLAY_IMAGE_HEIGHT + 15), 0);
RasterDMAFBConfig(SOC_LCDC_0_REGS, (unsigned int) Rgb_buffer2,
(unsigned int) (Rgb_buffer2 + DISPLAY_IMAGE_WIDTH * DISPLAY_IMAGE_HEIGHT + 15), 1);
/* Enable capture */
VPIFCaptureChanenEnable(SOC_VPIF_0_REGS, VPIF_CHANNEL_0);
/* Enable VPIF interrupt */
VPIFInterruptEnable(SOC_VPIF_0_REGS, VPIF_FRAMEINT_CH0);
VPIFInterruptEnableSet(SOC_VPIF_0_REGS, VPIF_FRAMEINT_CH0);
/* enable End of frame interrupt */
RasterEndOfFrameIntEnable(SOC_LCDC_0_REGS);
/* enable raster */
RasterEnable(SOC_LCDC_0_REGS);
buffcount++;
buffcount2 = buffcount - 1;
/* Run forever */
while (1)
{
/* Wait here till a new frame is not captured */
while (!captured);
/* Process the next buffer only when both the raster buffers
* are pointing to the current buffer to avoid jitter effect */
if (updated == 3)
{
processed = 0;
changed = 0;
updated = 0;
/* Convert the buffer from CBCR422 semi-planar to RGB565,
* Flush and invalidate the processed buffer so that the DMA reads the processed data,
* set the flag for the buffer to be displayed on the LCD (which would be the processed buffer)
* and notify the LCD of availability of a processed buffer.
* The output buffers are ping-ponged each time. */
if (pingpong)
{
cbcr422sp_to_rgb565_c(
(const unsigned char *) (videoTopC + OFFSET),
DISPLAY_IMAGE_HEIGHT, CAPTURE_IMAGE_WIDTH, ccCoeff,
(const unsigned char *) (videoTopY + OFFSET),
CAPTURE_IMAGE_WIDTH, videoTopRgb1, DISPLAY_IMAGE_WIDTH, DISPLAY_IMAGE_WIDTH);
#ifdef _TMS320C6X
CacheWBInv((unsigned int) videoTopRgb1, DISPLAY_IMAGE_WIDTH * DISPLAY_IMAGE_HEIGHT * 2);
#else
CP15DCacheCleanBuff((unsigned int) videoTopRgb1,DISPLAY_IMAGE_WIDTH * DISPLAY_IMAGE_HEIGHT * 2);
#endif
display_buff_1 = 1;
changed = 1;
}
else
{
cbcr422sp_to_rgb565_c(
(const unsigned char *) (videoTopC + OFFSET),
DISPLAY_IMAGE_HEIGHT, CAPTURE_IMAGE_WIDTH, ccCoeff,
(const unsigned char *) (videoTopY + OFFSET),
CAPTURE_IMAGE_WIDTH, videoTopRgb2, DISPLAY_IMAGE_WIDTH, DISPLAY_IMAGE_WIDTH);
#ifdef _TMS320C6X
CacheWBInv((unsigned int) videoTopRgb2, DISPLAY_IMAGE_WIDTH * DISPLAY_IMAGE_HEIGHT * 2);
#else
CP15DCacheCleanBuff((unsigned int) videoTopRgb2, DISPLAY_IMAGE_WIDTH * DISPLAY_IMAGE_HEIGHT * 2);
#endif
display_buff_1 = 0;
changed = 1;
}
pingpong = !pingpong;
captured = 0;
processed = 1;
}
}
}
/**
* \brief This API clean a section of D-Cache, upto PoC. This API
* can be used to make a buffer in D-Cache to be coherent
* with the memory. For example, If DMA engine has to access
* a memory area for transmitting, to make sure that the
* D-Cache values for the corresponding buffer is written to
* memory, this API can be used.
*
* \param startAddr Starting address of the buffer to be cleaned
* \param numBytes The number of bytes to be cleaned.
*
* \return None.
*
**/
void CacheDataCleanBuff(unsigned int startAddr, unsigned int numBytes)
{
CP15DCacheCleanBuff(startAddr, numBytes);
}