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/*****************************************************************************/
/**
*
* @file ycrcb2rgb_example.c
*
* This file demonstrates how to use Xilinx YCrCb to RGB Color Space Converter
* (YCrCb2RGB) driver on Xilinx YCrCb to RGB Color Space Converter (YCrCb2RGB)
* core.
*
* <pre>
* MODIFICATION HISTORY:
*
* Ver Who Date Changes
* ----- ---- -------- -------------------------------------------------------
* 7.00 adk 07/14/14 First release.
* </pre>
*
******************************************************************************/
#include "xycrcb2rgb.h"
#include "xparameters.h"
/************************** Constant Definitions *****************************/
/**
* The following constants map to the XPAR parameters created in the
* xparameters.h file. They are defined here such that a user can easily
* change all the needed parameters in one place.
*/
#define XYCC_DEVICE_ID XPAR_YCRCB2RGB_0_DEVICE_ID
/**************************** Type Definitions *******************************/
/***************** Macros (Inline Functions) Definitions *********************/
/************************** Function Prototypes ******************************/
int YCrCb2Rgb_Update_Example(u16 DeviceId);
/************************** Variable Definitions *****************************/
XYCrCb2Rgb XYccInstance; /**< Instance of the YCRCB2RGB core */
/************************** Function Definitions *****************************/
/*****************************************************************************/
/**
*
* Main function to call the YCrCb2RGB example.
*
* @param None.
*
* @return
* - XST_SUCCESS if successful,
* - XST_FAILURE if it is unsuccessful
*
* @note None.
*
******************************************************************************/
int main(void)
{
int Status;
/* Call the YCrCb2RGB update example, specify the parameters generated
* in xparameters.h
*/
Status = YCrCb2Rgb_Update_Example(XYCC_DEVICE_ID);
if (Status != XST_SUCCESS) {
xil_printf("YCrCb2RGB driver example failed.\n\r");
return XST_FAILURE;
}
xil_printf("Successfully ran YCrCb2RGB driver example.\n\r");
return XST_SUCCESS;
}
/*****************************************************************************/
/**
*
* YCrCb to RGB Color Space Converter Register Update Example.
* This function provides an example of the process used to update the
* coefficient and offset registers in the YCRCB2RGB core.
*
* @param DeviceId is the unique device id of the YCRCB2RGB core.
*
* @return
* - XST_SUCCESS if successful,
* - XST_FAILURE if it is un-successful
*
* @note None.
*
****************************************************************************/
int YCrCb2Rgb_Update_Example(u16 DeviceId)
{
struct XYCrCb2Rgb_Coef_Inputs CoefIn;
struct XYCrCb2Rgb_Coef_Outputs CoefOut;
struct XYCrCb2Rgb_Coefficients Coef;
XYCrCb2Rgb_Config *Config;
int Status;
/* Initialize the CrCb2RGB driver so that it's ready to use look up
* the configuration in the config table then initialize it.
*/
Config = XYCrCb2Rgb_LookupConfig(DeviceId);
if(NULL == Config){
return XST_FAILURE;
}
Status = XYCrCb2Rgb_CfgInitialize(&XYccInstance, Config,
Config->BaseAddress);
if(Status != XST_SUCCESS){
return XST_FAILURE;
}
/* Enable the YCRCB2RGB core */
XYCrCb2Rgb_Enable(&XYccInstance);
/* Disable register updates. This is the default operating mode for
* the YCRCB2RGB core and allows registers to be updated without
* effecting the core's behavior.
*/
XYCrCb2Rgb_RegUpdateDisable(&XYccInstance);
/* Setup CoefIn for XYCC_STANDARD_ITU_601_SD, 16_to_240_for_TV
* and data width of 8-bits.
* enum XYcc_Standards are:
* 0 = XYCC_STANDARD_ITU_601_SD
* 1 = XYCC_STANDARD_ITU_709_NTSC
* 2 = XYCC_STANDARD_ITU_709_PAL
* 3 = XYCC_STANDARD_YUV.
*/
XYCrCb2Rgb_Select_Standard(&XYccInstance, XYCC_STANDARD_ITU_601_SD,
XYCC_TV_16_TO_240, (u32)XYCC_DATA_WIDTH_8,
&CoefIn);
/* Translate into YCRCB2RGB core coefficients */
XYCrCb2Rgb_Coefficient_Translation(&XYccInstance,
&CoefIn, &CoefOut,(u32)XYCC_DATA_WIDTH_8,
(u32)XYCC_DATA_WIDTH_8);
/* Store coefficient values */
Coef.ACoef = CoefIn.ACoef;
Coef.ACoef = CoefIn.ACoef;
Coef.ACoef = CoefIn.ACoef;
Coef.ACoef = CoefIn.ACoef;
/* Program the new YCRCB2RGB core coefficients */
XYCrCb2Rgb_SetCoefs(&XYccInstance, &Coef);
/* Set output range */
XYCrCb2Rgb_Select_OutputRange(&XYccInstance, XYCC_TV_16_TO_240);
/* Set the Active Columns and Rows */
XYCrCb2Rgb_SetActiveSize(&XYccInstance, 720, 1280);
/* Set the offsets
* For 8-bit color: Valid range = [0, 255]
* For 10-bit color: Valid range = [0, 1023]
* For 12-bit color: Valid range = [0, 4095]
* For 16-bit color: Valid range = [0, 65535]
*/
XYCrCb2Rgb_SetROffset(&XYccInstance, 16);
XYCrCb2Rgb_SetGOffset(&XYccInstance, 128);
XYCrCb2Rgb_SetBOffset(&XYccInstance, 128);
/* Set the Clip/Clamp
* For 8-bit color: Valid range = [0, 255]
* For 10-bit color: Valid range = [0, 1023]
* For 12-bit color: Valid range = [0, 4095]
* For 16-bit color: Valid range = [0, 65535]
*/
XYCrCb2Rgb_SetRGBMax(&XYccInstance, 240);
XYCrCb2Rgb_SetRGBMin(&XYccInstance, 16);
/* Enable register updates. This mode will cause the coefficient and
* offset registers internally to the YCRCB2RGB core to automatically
* be updated on the next start-of-frame (SOF).
*/
XYCrCb2Rgb_RegUpdateEnable(&XYccInstance);
return XST_SUCCESS;
}