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/*****************************************************************************/
/**
*
* @file rgb2ycrcb_example.c
*
* This file demonstrates how to use Xilinx RGB to YCrCb Color Space Converter
* (RGB2YCRCB) driver on Xilinx RGB to YCrCb Color Space Converter (RGB2YCRCB)
* core.
*
* <pre>
* MODIFICATION HISTORY:
*
* Ver Who Date Changes
* ----- ---- -------- -------------------------------------------------------
* 7.00 adk 07/07/14 First release.
* </pre>
*
******************************************************************************/
#include "xrgb2ycrcb.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 XRGB_DEVICE_ID XPAR_RGB2YCRCB_0_DEVICE_ID
/**************************** Type Definitions *******************************/
/***************** Macros (Inline Functions) Definitions *********************/
/************************** Function Prototypes ******************************/
int Rgb2YCrCb_Update_Example(u16 DeviceId);
/************************** Variable Definitions *****************************/
XRgb2YCrCb XRgbInstance; /**< Instance of the RGB2YCRCB core */
/************************** Function Definitions *****************************/
/*****************************************************************************/
/**
*
* Main function to call the Rgb2YCrCb example.
*
* @param None.
*
* @return
* - XST_SUCCESS if successful,
* - XST_FAILURE if it is unsuccessful
*
* @note None.
*
******************************************************************************/
int main(void)
{
int Status;
/* Call the Rgb2YCrCb update example, specify the parameters generated
* in xparameters.h
*/
Status = Rgb2YCrCb_Update_Example(XRGB_DEVICE_ID);
if (Status != XST_SUCCESS) {
xil_printf("RGB2YCRCB driver example failed.\n\r");
return XST_FAILURE;
}
xil_printf("Successfully ran RGB2YCRCB driver example.\n\r");
return XST_SUCCESS;
}
/*****************************************************************************/
/**
*
* RGB to YCrCb Color Space Converter Register Update Example.
* This function provides an example of the process used to update the
* coefficient and offset registers in the RGB2YCrCb core. .
*
* @param DeviceId is the unique device id of the RGB2YCRCB core.
*
* @return
* - XST_SUCCESS if successful,
* - XST_FAILURE if it is un-successful
*
* @note None.
*
****************************************************************************/
int Rgb2YCrCb_Update_Example(u16 DeviceId)
{
struct XRgb2YCrCb_Coef_Inputs CoefIn;
struct XRgb2YCrCb_Coef_Outputs CoefOut;
XRgb2YCrCb_Config *Config;
int Status;
/* Initialize the RGB2YCrCb driver so that it's ready to use look up
* the configuration in the config table, then initialize it.
*/
Config = XRgb2YCrCb_LookupConfig(DeviceId);
if(NULL == Config){
return XST_FAILURE;
}
Status = XRgb2YCrCb_CfgInitialize(&XRgbInstance, Config,
Config->BaseAddress);
if(Status != XST_SUCCESS){
return XST_FAILURE;
}
/* Enable the RGB2YCRCB core */
XRgb2YCrCb_Enable(&XRgbInstance);
/* Disable register updates. This is the default operating mode for
* the RGB2YCRCB core and allows registers to be updated without
* effecting the core's behavior.
*/
XRgb2YCrCb_RegUpdateDisable(&XRgbInstance);
/* Setup CoefIn for XRGB_STANDARD_ITU_601_SD, 16_to_240_for_TV
* and data width of 8-bits.
* enum Standards are:
* 0 = XRGB_STANDARD_ITU_601_SD
* 1 = XRGB_STANDARD_ITU_709_NTSC
* 2 = XRGB_STANDARD_ITU_709_PAL
* 3 = XRGB_STANDARD_YUV.
*/
XRgb2YCrCb_Select_Standard(&XRgbInstance, XRGB_STANDARD_ITU_601_SD,
XRGB_TV_16_TO_240, (u32)XRGB_DATA_WIDTH_8,
&CoefIn);
/* Translate into RGB2YCrCb core coefficients */
XRgb2YCrCb_Coefficient_Translation(&XRgbInstance,
&CoefIn, &CoefOut,(u32)XRGB_DATA_WIDTH_8);
/* Program the new RGB2YCrCb core coefficients */
XRgb2YCrCb_SetCoefs(&XRgbInstance, CoefIn.ACoef, CoefIn.BCoef,
CoefIn.CCoef, CoefIn.DCoef);
/* Set output range */
XRgb2YCrCb_Select_OutputRange(&XRgbInstance, XRGB_TV_16_TO_240);
/* Set the Active Columns and Rows */
XRgb2YCrCb_SetActiveSize(&XRgbInstance, 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]
*/
XRgb2YCrCb_SetYOffset(&XRgbInstance, 16);
XRgb2YCrCb_SetCbOffset(&XRgbInstance, 128);
XRgb2YCrCb_SetCrOffset(&XRgbInstance, 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]
*/
XRgb2YCrCb_SetYMax(&XRgbInstance, 240);
XRgb2YCrCb_SetYMin(&XRgbInstance, 16);
XRgb2YCrCb_SetCbMax(&XRgbInstance, 240);
XRgb2YCrCb_SetCbMin(&XRgbInstance, 16);
XRgb2YCrCb_SetCrMax(&XRgbInstance, 240);
XRgb2YCrCb_SetCrMin(&XRgbInstance, 16);
/* Enable register updates. This mode will cause the coefficient and
* offset registers internally to the RGB2YCRCB core to automatically
* be updated on the next start-of-frame (SOF).
*/
XRgb2YCrCb_RegUpdateEnable(&XRgbInstance);
return XST_SUCCESS;
}