osd_end.c

来自「sample on embedded linux」· C语言 代码 · 共 91 行

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <time.h>
#include <hi_common_api.h>

HI_S32 OSDEndService(void)
{
    HI_S32 ret;
    OSD_REGION_HANDLE region;
    OSD_BITMAP_S Bitmap;
    char * pdata;
    int i = 0;


    OSD_REGION_S RegionParam = 
    {
        .struValidRect = {100, 20, 50, 90},
        .u32Alpha = 10,
        .u32TransparentColor = 0x000000,
        .u32TopLevel = 0,
    };

   /*create region*/
    if((ret = HI_OSD_CreateRegion(OSD_END, 0, &RegionParam, &region)) < 0)
    {
        return ret;
    }
    Bitmap.u32Width = 50;
    Bitmap.u32Height = 90;
    Bitmap.enPixelFormat = PIXEL_FORMAT_RGB_888;
    Bitmap.pData = (void *)malloc(Bitmap.u32Width * Bitmap.u32Height * 3);  
    if(NULL == Bitmap.pData)
    {
        printf("Bitmap.pData malloc err!\n");
        HI_OSD_DeleteRegion(region);
        return HI_FAILURE;
    }
    pdata = (char *)Bitmap.pData;
    /*top of the region is red*/
    for(i = 0; i < Bitmap.u32Width*Bitmap.u32Height; i += 3)
    {
        *pdata++ = 0xff;
        *pdata++ = 0x00;
        *pdata++ = 0x00;
    }
    /*middle of the region is green*/
    for(;i < Bitmap.u32Width*Bitmap.u32Height*2; i += 3)
    {
        *pdata++ = 0x00;
        *pdata++ = 0xff;
        *pdata++ = 0x00;
    }
    /*bottom of the region is blue*/
    for(; i < Bitmap.u32Width*Bitmap.u32Height*3; i += 3)
    {
        *pdata++ = 0x00;
        *pdata++ = 0x00;
        *pdata++ = 0xff;
    }
    /*fill the rigon with the bitmap*/
    if((ret = HI_OSD_PutBitmapToRegion(region, &Bitmap, 0, 0)) < 0)
    {
        free(Bitmap.pData);
        HI_OSD_DeleteRegion(region);
        return ret;
    }

    free(Bitmap.pData);

    /*set transparence*/
    for(i = 10; i <= 100; i += 10 )
    {
        HI_OSD_SetRegionAlpha(region, i);

        /*stop 1 second to make all the effect much better*/
        sleep(1);
    }
    
    /*delete the region*/    
    HI_OSD_DeleteRegion(region);
  
    return HI_SUCCESS;
}

int main()
{
    OSDEndService();
    return 0;
}