csl_osdhwsetup.c

来自「TI达芬奇dm644x各硬件模块测试代码」· C语言 代码 · 共 58 行

/*   ==========================================================================
 *   Copyright (c) Texas Instruments Inc , 2004
 *
 *   Use of this software is controlled by the terms and conditions found
 *   in the license agreement under which this software has been supplied
 *   priovided
 *   ==========================================================================
*/
/** @file CSL_osdHwSetup.c
 *
 *  @brief    File for functional layer of CSL API @a CSL_osdHwSetup()
 *
 *  Description
 *   - The @a CSL_osdHwSetup() function definition & it's associated functions
 *
 *  @date 11th October, 2004
 *  @author Santosh Narayanan
 */

#include <csl_osd.h>

#pragma CODE_SECTION (CSL_osdHwSetup, ".text:csl_section:osd");

/**

    \brief Setup OSD module for operation

    \param hOsd  Pointer to the object that holds reference to the instance
                 of OSD requested
    \param setup  Pointer to setup structure which contains the information 
                  to program OSD to a useful state		  
    \return if success, \c CSL_SOK, else error code 

    \see 
*/

CSL_Status CSL_osdHwSetup ( CSL_OsdHandle hOsd,
                             CSL_OsdHwSetup *setup ) 
{
  Uint16 i=0;
   
  hOsd->regs->MODE = (hOsd->regs->MODE & 0xfffffeff) 
                     |(CSL_FMK(OSD_MODE_BCLUT, setup->bclut));

  for(i=0; i<256; ++i) {
	  hOsd->regs->CLUTRAMYCB = CSL_FMK(OSD_CLUTRAMYCB_Y, setup->y[i])
						   |CSL_FMK(OSD_CLUTRAMYCB_CB, setup->cb[i]);
	  hOsd->regs->CLUTRAMCR = CSL_FMK(OSD_CLUTRAMCR_CR, setup->cr[i])
						   |CSL_FMK(OSD_CLUTRAMCR_CADDR, i);
  }

  hOsd->regs->BASEPX = CSL_FMK(OSD_BASEPX_BPX, setup->basepx);

  hOsd->regs->BASEPY = CSL_FMK(OSD_BASEPY_BPY, setup->basepy);                         
  
  return CSL_SOK;
}