w_interface.c

bu1566dsp芯片用来处理ov7660或其他３０万摄像模组的图像预览．图像拍照（jpeg压缩）

            }while (gv_VideoData.u32JpgSize < MJPEG_BUFFER - u32FrameByteSize * 2 - 1000);
        }
        break;
    default:
        break;
    }
}

void fJpegDec(void)
{
    if (gv_VideoData.u32JpgSize == 0)
        return;

    aDRT_clear(0, 0, M_LCD_WSIZE, M_LCD_HSIZE, 0x0000ff);
    wait(500);
    aDSC_fmemory_clear(0, 0, M_LCD_WSIZE, M_LCD_HSIZE, 0x0000);

    bit_write(OVL_CNT, 3, LOW); //switch off OSD

    switch (gv_VideoData.u16JpgFunc)
    {
    	 case SIGLESHOT:
        {
            aDSC_Decode(gv_VideoData.p_u16JpgCode, &gv_VideoData.u32JpgSize,
                        gv_VideoData.p_DecSize);
            aDSC_data_trans_st(gv_VideoData.p_DecSize->mst_x,
                               gv_VideoData.p_DecSize->mst_y,
                               gv_VideoData.p_DecSize->xsize, gv_VideoData.p_DecSize->ysize);
        }
        break;
	    case MULTISHOT:
	    {
            UINT32 u32DecodeByteSize = 0, u32FrameSize = 0;
            do
            {
                u32FrameSize = 0;
                u32FrameSize = *(gv_VideoData.p_u16JpgCode + u32DecodeByteSize / 2);
                u32FrameSize <<= 16;
                u32FrameSize |= *(gv_VideoData.p_u16JpgCode + u32DecodeByteSize / 2 + 1);
                aDSC_Decode(gv_VideoData.p_u16JpgCode + u32DecodeByteSize / 2 + 2,
                            &u32FrameSize, &tCamDec128x96);
                u32DecodeByteSize += u32FrameSize + 4;
                aDSC_data_trans_st(tCamDec128x96.mst_x,
                                   tCamDec128x96.mst_y,
                                   tCamDec128x96.xsize,
                                   tCamDec128x96.ysize);
                wait(500);
            }
            while (gv_VideoData.u32JpgSize > u32DecodeByteSize);
	    }
	    break;
	    case MOTIONJPEG:
	    {
            UINT32 u32DecodeByteSize = 0, u32FrameSize = 0;
            do
            {
                u32FrameSize = 0;
                u32FrameSize = *(gv_VideoData.p_u16JpgCode + u32DecodeByteSize / 2);
                u32FrameSize <<= 16;
                u32FrameSize |= *(gv_VideoData.p_u16JpgCode + u32DecodeByteSize / 2 + 1);
                aDSC_Decode(gv_VideoData.p_u16JpgCode + u32DecodeByteSize / 2 + 2,
                            &u32FrameSize, &tCamDec80x80);
                u32DecodeByteSize += u32FrameSize + 4;
                aDSC_data_trans_st(tCamDec80x80.mst_x,
                                   tCamDec80x80.mst_y,
                                   tCamDec80x80.xsize,
                                   tCamDec80x80.ysize);
                wait(100);
            }
            while (gv_VideoData.u32JpgSize > u32DecodeByteSize);
	    }
       break;
    	default:
       break;
    }
}

void fZoom(INT16 u8Zoom)
{
    CAMSET cam;

/* MT9M111_SENSOR
    static UINT16 sHoriZoom=M_LCD_WSIZE;
    static UINT16 sVertZoom=M_LCD_WSIZE* 4 / 3;
    INT16 u16HoriZoomStep=3*u8Zoom;
    INT16 u16VertZoomStep=4*u8Zoom;
    UINT16 u16CamWidth=CAM_VSIZE;
    UINT16 u16CamHight=CAM_HSIZE;
    cam.rot_h_vflip = sROT_ON | sHFLIP_OFF | sVFLIP_ON;
*/

    static UINT16 sHoriZoom = M_LCD_HSIZE * 4 / 3;
    static UINT16 sVertZoom = M_LCD_HSIZE;
    INT16 u16HoriZoomStep = 4 * u8Zoom;
    INT16 u16VertZoomStep = 3 * u8Zoom;
    UINT16 u16CamWidth = CAM_HSIZE;
    UINT16 u16CamHight = CAM_VSIZE;
    cam.rot_h_vflip = sROT_OFF | sHFLIP_OFF | sVFLIP_ON;

    aDSC_overlayframe_off();

    cam.xsize = M_LCD_WSIZE;
    cam.ysize = M_LCD_HSIZE;

    if ((((sHoriZoom + u16HoriZoomStep) <= u16CamWidth)
         && ((sHoriZoom + u16HoriZoomStep) >= cam.xsize))
        && (((sVertZoom + u16VertZoomStep) <= u16CamHight)
            && ((sVertZoom + u16VertZoomStep) >= cam.ysize)))
    {
        sHoriZoom += u16HoriZoomStep;
        sVertZoom += u16VertZoomStep;
    }

    cam.srkx = sHoriZoom;
    cam.srky = sVertZoom;

    if (cam.rot_h_vflip & sROT_ON)
    {
        cam.cst_x = (cam.srkx - cam.xsize) / 2;
        cam.cst_y = (cam.srky - cam.ysize) / 2 + 1;
        if (cam.cst_y % 2)
            cam.cst_y--;
    }
    else
    {
        cam.cst_x = (cam.srkx - cam.xsize) / 2 + 1;
        cam.cst_y = (cam.srky - cam.ysize) / 2;
        if (cam.cst_x % 2)
            cam.cst_x--;
    }

    cam.mst_x = 0;
    cam.mst_y = 0;

    cam_capture_set(&cam);

    wait(50);                   // wait 50ms

}

static void fFillExOvlMirror(c_ItemBase * p_Item)
{
    UINT8 font_cnt;
    const UINT16 *font_data;
    char *string;

    *gl_pExOvlMem_Buf = p_Item->p_ExOverlay1->u16FmXsize;
    *(gl_pExOvlMem_Buf + 1) = p_Item->p_ExOverlay1->u16FmYsize + p_Item->p_ExOverlay2->u16FmYsize;
    memset((UINT8 *) gl_pExOvlMem_Buf + 4, 0x00, EXOVLMEM_BUF_SIZE - 4);

    bit_write(OVL_CNT, 3, LOW); //switch off OSD
    if (p_Item->p_ExOverlay1->u16OvlOpen)       //set ex-overlay1 string
    {
        bit_write(OVL_CNT, 1 << 1, HIGH);
        string = p_Item->szOvl1Str;
        for (font_cnt = 0; (font_cnt < 10) || (*string != '\0'); font_cnt++)
        {
            if (*string != '\0')
            {
                font_data = fonttable[*string];
                fFillStrExOvlMirror(font_data, p_Item->p_ExOverlay1, font_cnt);
                string++;
            }
        }
    }

    if (p_Item->p_ExOverlay2->u16OvlOpen)       //set ex-overlay2 string
    {
        bit_write(OVL_CNT, 1 << 0, HIGH);
        string = p_Item->szOvl2Str;
        for (font_cnt = 0; (font_cnt < 10) || (*string != '\0'); font_cnt++)
        {
            if (*string != '\0')
            {
                font_data = fonttable[*string];
                fFillStrExOvlMirror(font_data, p_Item->p_ExOverlay2, font_cnt);
                string++;
            }
        }
    }

    fExOvlParamSet(p_Item->p_ExOverlay1, p_Item->p_ExOverlay2);
    aDSC_ExOvlMemory_write_rgb565(gl_pExOvlMem_Buf);

}

static void fFillStrExOvlMirror(const UINT16 * rgb_data, EXOVLSET * p_ExOverlay,
                                const UINT8 font_cnt)
{
    UINT16 xsize, ysize;
    int width, height;
    UINT32 u32HeightOffset = 0;
    UINT32 u32WidthOffset = 0;
    UINT16 st_x, st_y;
    UINT8 space = 2;

    st_x = p_ExOverlay->u16ExmSt_x + (space + 4) * font_cnt;
    st_y = p_ExOverlay->u16ExmSt_y;

    xsize = *rgb_data;
    rgb_data++;
    ysize = *rgb_data;
    rgb_data++;

    for (height = 0; height < ysize; height++)
    {
        u32HeightOffset = p_ExOverlay->u16OvlIndex * p_ExOverlay->u16FmYsize + st_y + height;
        u32HeightOffset *= p_ExOverlay->u16FmXsize;
        for (width = 0; width < xsize; width++)
        {
            u32WidthOffset = st_x + width;
            u32WidthOffset += u32HeightOffset;
            if (*rgb_data != p_ExOverlay->u16TransColor)
            {
               *(gl_pExOvlMem_Buf + 2 + u32WidthOffset) = *rgb_data;
            }
            else
            {
               *(gl_pExOvlMem_Buf + 2 + u32WidthOffset) = *rgb_data+1;
            }
            rgb_data++;
        }
    }
}

static void fExOvlParamSet(EXOVLSET * p_ExOverlay1, EXOVLSET * p_ExOverlay2)
{
    UINT16 u16Ovl_H, u16Ovl_V;

    u16Ovl_H = p_ExOverlay1->u16FmXsize;
    u16Ovl_V = p_ExOverlay1->u16FmYsize + p_ExOverlay2->u16FmYsize;

    if (p_ExOverlay1->u16TransEnable)
        bit_write(OVL_CNT, 1 << 4, HIGH);       //transparent color enable
    else
        bit_write(OVL_CNT, 1 << 4, LOW);

    data_write(OVL_TRANS, p_ExOverlay1->u16TransColor);
    data_write(OVL_TRMSK, p_ExOverlay1->u16MaskColor);
    data_write(OVLSIZE, (u16Ovl_H << 8) | u16Ovl_V);

    data_write(OVL_ST1, 0x0000);
    data_write(OVL_ED1, ((u16Ovl_H - 1) << 8) | (u16Ovl_V / 2 - 1));
    data_write(OVL_FRMST1, (p_ExOverlay1->u16FmSt_x << 8) | p_ExOverlay1->u16FmSt_y);

    data_write(OVL_ST2, u16Ovl_V / 2);
    data_write(OVL_ED2, ((u16Ovl_H - 1) << 8) | (u16Ovl_V - 1));
    data_write(OVL_FRMST2, (p_ExOverlay2->u16FmSt_x << 8) | p_ExOverlay2->u16FmSt_y);

}
#endif                          //_BU1563API_INTERFACE_

#undef _W_INTERFACE_C_