DM368视屏输出的问题

Yan Li1

DM368视屏输出模块只有OSD和VENC。感觉比VPFE难调多了，我想点一块640x480的屏，Vsync和Hsync都已经吧时序调好了，但数据一致对不上，屏幕显示不正确。

附件是出来的图像，并附上VPBE的配置，请大拿们帮着看看，谢了

static void vpbe_init( Uint32 colorbar_loopback_mode, Uint32 ntsc_pal_mode, Uint32 output_mode )
{
   Uint32 video_buffer = 0x84600000;
    Uint32 basep_x;
    Uint32 basep_y;
    Uint32 width;
    Uint32 height;
Uint32 test;

    if ( ntsc_pal_mode == NTSC )
    {
        basep_x = 122;
        basep_y = 18;

width = 640;
        height = 480;
    }
    else
    {
        basep_x = 132;
        basep_y = 22;
        width   = 720;
        height = 480;
    }

    /*
     * Setup clocking / DACs
     */
    VDAC_CONFIG         = 0x081141CF;   // Take DACs out of power down mode
VPSS_CLKCTL   = 0x0000000B; // Enable DAC and VENC clock, both at 27 MHz
VPSS_VPBE_CLK_CTRL = 0x00000011; // Select enc_clk*1, turn on VPBE clk

    /*
     * Setup OSD
     */
    OSD_MODE       = 0x000000fc;   // Blackground color blue using clut in ROM0
    OSD_OSDWIN0MD = 0;            // Disable both osd windows and cursor window
    OSD_OSDWIN1MD = 0;
    OSD_RECTCUR    = 0;

OSD_VIDWIN0OFST= ((video_buffer>>19)&0x1E00) | width >> 4; //bit 12~9 store high 4bit 31~28
    OSD_VIDWINADH = (video_buffer >> 21)&0x7F; //bit 6~0 store hight 7bit 27~21
    OSD_OSDWIN0ADL = (video_buffer >> 5)&0xFFFF; //bit 15~0 stor 16bit 20~5
    OSD_BASEPX     = 126;
    OSD_BASEPY     = 3;
    OSD_VIDWIN0XP = 0;
    OSD_VIDWIN0YP = 0;
    OSD_VIDWIN0XL = width;
    OSD_VIDWIN0YL = height;

OSD_VIDWINMD = 0x00000001; // Disable vwindow 1 and enable vwindow 0
// Frame mode with no up-scaling

    /*
     * Setup VENC
     */
    if ( ntsc_pal_mode == NTSC )
//        VENC_VMOD = 0x00000003;   // Standard NTSC interlaced output
VENC_VMOD = 0x00000013;   // liyan change to No stardar video mode 130203
    else
        VENC_VMOD = 0x00000043;   // Standard PAL interlaced output

    VENC_HSPLS     = 126;          //HDW
VENC_VSPLS     = 3;          //VDW
// VENC_HINTVL    = width-1;      //PPLN
    VENC_HINTVL    = width + VENC_HSPLS - 1;      //PPLN
VENC_HSTART    = VENC_HSPLS;            //SPH
VENC_HVALID    = width; //LNH
VENC_VINTVL    = height + VENC_VSPLS - 1;      //LPFR
VENC_VSTART    = VENC_VSPLS;            //SLV
VENC_VVALID    = height;       //LNV
VENC_HSDLY     = 0;
VENC_VSDLY     = 0;

VENC_CMPNT    |= 0x8000;
    VENC_YCCCTL    = 0x10;

//    VENC_VDPRO     = colorbar_loopback_mode << 8;
    VENC_VDPRO    |= 0x200; // 100% Color bars
//    VENC_VDPRO    |= 0x40; // liyan change that YUV change to RGB
//    VENC_VIOCTL   |= 0x6000; //VCLK output enable
    VENC_CLKCTL    = 0x11;
    VENC_SYNCCTL |= 0x3;

    /*
     * Choose Output mode
     */
    if ( output_mode == COMPOSITE_OUT )
        VENC_DACSEL = 0x00000000;
    else if ( output_mode == SVIDEO_OUT )
        VENC_DACSEL = 0x00004210;
}