应用层调用接口修改输出显示方式 ExtEscape

 示例代码

 

以下的宏定义可以在wince6.0的bsp找到

 

#define DRVESC_OUTPUT_BASE                (0x00020100)
#define DRVESC_OUTPUT_RGB                    (DRVESC_OUTPUT_BASE+0)
#define DRVESC_OUTPUT_TV                    (DRVESC_OUTPUT_BASE+1)
#define DRVESC_OUTPUT_SWITCH                (DRVESC_OUTPUT_BASE+2)
#define DRVESC_TV_DMA_DISABLE                (DRVESC_OUTPUT_BASE+10)
#define DRVESC_TV_DMA_PRIMARY                (DRVESC_OUTPUT_BASE+11)
#define DRVESC_TV_DMA_OVERLAY                (DRVESC_OUTPUT_BASE+12)

#ifndef METHOD_BUFFERED
#define METHOD_BUFFERED (0)
#endif
#ifndef FILE_ANY_ACCESS
#define FILE_ANY_ACCESS (0)
#endif
#ifndef CTL_CODE
#define CTL_CODE(DeviceType, Function, Method, Access) (((DeviceType) << 16) | ((Access) << 14) | ((Function) << 2) | (Method))
#endif

#define FILE_DEVICE_AUDIOSYS    0x8235
#define IOCTL_AUDIOSYS_SELECT_FM      CTL_CODE(FILE_DEVICE_AUDIOSYS,   12, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define IOCTL_AUDIOSYS_SELECT_FM_RECIVE      CTL_CODE(FILE_DEVICE_AUDIOSYS,   13, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define IOCTL_AUDIOSYS_SELECT_WCDMA_EAR_HF      CTL_CODE(FILE_DEVICE_AUDIOSYS,   14, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define IOCTL_AUDIOSYS_SELECT_AVIN      CTL_CODE(FILE_DEVICE_AUDIOSYS,   15, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define IOCTL_AUDIOSYS_SELECT_AVOUT      CTL_CODE(FILE_DEVICE_AUDIOSYS,   16, METHOD_BUFFERED, FILE_ANY_ACCESS)

 

void Cav_outDlg::OnBnClickedButton1()
{

 HDC hdc;
 int EscCode = 6301;
 hdc = ::GetDC(NULL);
 if (ExtEscape(hdc, 8,sizeof(EscCode), (LPSTR)&EscCode, 0,NULL))
 {
   ExtEscape(hdc, DRVESC_OUTPUT_TV, 0, NULL, 0, NULL);
  //RETAILMSG(1,(TEXT("6410 support EscCode\r\n")));
 }
 ::ReleaseDC(NULL, hdc);

 TurnOnAudioToAVOUT(TRUE);
}

void Cav_outDlg::OnBnClickedButton2()
{
 // TODO: Add your control notification handler code here
 HDC hdc;
 int EscCode = 6301;
 hdc = ::GetDC(NULL);
 if (ExtEscape(hdc, 8,sizeof(EscCode), (LPSTR)&EscCode, 0,NULL))
 {
   ExtEscape(hdc, DRVESC_OUTPUT_RGB, 0, NULL, 0, NULL);
  //RETAILMSG(1,(TEXT("6410 support EscCode\r\n")));
 }
 ::ReleaseDC(NULL, hdc);

 TurnOnAudioToAVOUT(FALSE);
}