_csl_prevwritetable.c

TI的DM6446的硬件平台搭建的相关例子

/** @file _csl_prevWriteTable.c
 *
 *  @brief    File for functional layer of CSL API @a CSL_prevWriteTable()
 *
 *  Description
 *    - The @a CSL_prevWriteTable() function definition & it's associated
 *      functions
 *
 *  @date 18th October, 2004
 *  @author Vignesh LA.
 */

#include <csl_prev_aux.h>

#pragma CODE_SECTION (CSL_prevWriteTable, ".text:csl_section:prev");

/** @brief Writes the Gamma table to appropriate location.
 * 
 */
CSL_Status  CSL_prevWriteTable(
    /** Pointer to the object that holds reference to the
     *  instance of PREV requested after the call 
	 */
    CSL_PrevHandle                         hPrev,
	/** Pointer to the object that holds reference to the
	 *  structure holding pointers to Red, Green and Blue Gamma
	 *  tables
	 */ 
	CSL_PrevWriteTableData				   *data
	){
    
    Int16 i;
    CSL_PrevRegsOvly prevRegs =  hPrev->regs; 
    if(data == NULL) return (CSL_ESYS_INVPARAMS);	

	/*	
	Start     End       Memory
	--------------------------------------------
	0x0000    0x03FF    Red Gamma table
	0x0400    0x07FF    Green Gamma table
	0x0800    0x0BFF    Blue Gamma table
	0x0C00    0x0CFF    NF threshold table
	0x1000    0x107F    Non-linear enhancer table
	0x1400    0x163F    CFA filter coefficient (each coefficient is 8-bits with a total of up to 576 coefficients)
	*/
	
	switch(data->tableSelect) {
		case CSL_PREV_NOISE_FILTER:
			/* 256x8 bits of table is to be written*/
			/* we need to set the address once as it is an auto increment register on
			a Read/Write*/
			prevRegs->SET_TBL_ADDRESS = CSL_FMK(PREV_SET_TBL_ADDRESS_ADDR,0x0C00);
			for( i=0;i<256;i++) {
                prevRegs->SET_TBL_DATA = CSL_FMK(PREV_SET_TBL_DATA_DATA,data->tableData[i]);
			}
			break;
		
		case CSL_PREV_GAMMA:
			/* 3x1024x8 bits of table is to be written*/	
			prevRegs->SET_TBL_ADDRESS = CSL_FMK(PREV_SET_TBL_ADDRESS_ADDR,0);
			for( i=0;i<3072;i++) {
                prevRegs->SET_TBL_DATA = CSL_FMK(PREV_SET_TBL_DATA_DATA,data->tableData[i]);
			}			
			break;
			
		case CSL_PREV_RED_GAMMA:
			/* 1024x8 bits of table is to be written*/	
			prevRegs->SET_TBL_ADDRESS = CSL_FMK(PREV_SET_TBL_ADDRESS_ADDR,0);
			for( i=0;i<1024;i++) {
                prevRegs->SET_TBL_DATA = CSL_FMK(PREV_SET_TBL_DATA_DATA,data->tableData[i]);
			}			
			break;

		case CSL_PREV_GREEN_GAMMA:
			/* 1024x8 bits of table is to be written*/	
			prevRegs->SET_TBL_ADDRESS = CSL_FMK(PREV_SET_TBL_ADDRESS_ADDR,0x0400);
			for( i=0;i<1024;i++) {
                prevRegs->SET_TBL_DATA = CSL_FMK(PREV_SET_TBL_DATA_DATA,data->tableData[i]);
			}			
			break;
		case CSL_PREV_BLUE_GAMMA:
			/* 1024x8 bits of table is to be written*/	
			prevRegs->SET_TBL_ADDRESS = CSL_FMK(PREV_SET_TBL_ADDRESS_ADDR,0x0800);
			for( i=0;i<1024;i++) {
                prevRegs->SET_TBL_DATA = CSL_FMK(PREV_SET_TBL_DATA_DATA,data->tableData[i]);
			}			
			break;									
					
		case CSL_PREV_NL_LUM:
			/* 128x20 bits of table is to be written*/	
			prevRegs->SET_TBL_ADDRESS = CSL_FMK(PREV_SET_TBL_ADDRESS_ADDR,0x1000);
			for( i=0;i<128;i++) {
                prevRegs->SET_TBL_DATA = CSL_FMK(PREV_SET_TBL_DATA_DATA,data->tableData[i]);
			}
			break;
		
		case CSL_PREV_CFA_COEF:
			/* 24x192 = 576x8 bits of table is to be written*/	
			prevRegs->SET_TBL_ADDRESS = CSL_FMK(PREV_SET_TBL_ADDRESS_ADDR,0x1400);
			for( i=0;i<576;i++) {
                prevRegs->SET_TBL_DATA = CSL_FMK(PREV_SET_TBL_DATA_DATA,data->tableData[i]);
			}
			break;
			
		default:
			return (CSL_ESYS_INVPARAMS);			
	};
	
    return (CSL_SOK);
}