dm8168 osd

chWinPrm->winPrm[winId].format   = SYSTEM_DF_YUV422I_YUYV;

chWinPrm->winPrm[winId].globalAlpha        = 0x80;

chWinPrm->winPrm[winId].transperencyEnable = TRUE; 

chWinPrm->colorKey[0] = 0x0;
chWinPrm->colorKey[1] = 0x80;
chWinPrm->colorKey[2] = 0x80;

chWinPrm->colorKey[0] = 0x0;
chWinPrm->colorKey[1] = 0x80;
chWinPrm->colorKey[2] = 0x80;

你好；

       你这个是通过framebuffer 实现的还是 swosd来实现的；

       这个是没有做透明度的处理导致的。

你这个需要修改swosd的代码，支持argb 数据格式，a 为透明度参数，这样才可以；

如果是直接传入 rgb 或者 yuv 数据的时候，本来是黑色的地方（0x00） ，也会被你过滤掉的；

现在的sdk 里面只支持了yuv422i、yuv420sp、rgb ，你还需要支持argb ；

inline void SWOSD_TI_algBlendLine
(
Int64 * restrict pInA,
Int64 * restrict pInB,
Int64 * restrict pOut,
Int64 * restrict pAlp,
UInt16 width,
Bool transperencyEnable,
UInt32 transperencyColor32,
UInt32 globalAlpha32
)
{
Int32 len;
Int64 inB64Val, inA64Val;
Int64 alp64Val;
UInt8 *inA8, *inB8, *out8, *gain;
UInt8 *pTmpB;
UInt8 *pTmpAlp;

len = (width)>>3;
if(transperencyEnable)
{
UInt32 i;

pTmpB = (UInt8*)pInB;
pTmpAlp = (UInt8*)pAlp;

for(i=0; i<width/4; i++)
{
if(( *pTmpB ) == (UInt8)(transperencyColor32>>0))//与关键色对比
*pTmpAlp = 0;
else
{
*pTmpAlp = globalAlpha32;
}

pTmpAlp++;
pTmpB++;

if(( *pTmpB ) == (UInt8)(transperencyColor32>>8))
*pTmpAlp = 0;
else
{
*pTmpAlp = globalAlpha32;
}
pTmpAlp++;
pTmpB++;

if(( *pTmpB ) == (UInt8)(transperencyColor32>>16))
*pTmpAlp = 0;
else
{
*pTmpAlp = globalAlpha32;
}

pTmpAlp++;
pTmpB++;

if(( *pTmpB ) == (UInt8)(transperencyColor32>>24))
*pTmpAlp = 0;
else
{
*pTmpAlp = globalAlpha32;
}

pTmpAlp++;
pTmpB++;

}
}

inA8 = (UInt8*)&inA64Val;
inB8 = (UInt8*)&inB64Val;
gain = (UInt8*)&alp64Val;
out8 = (UInt8*)pOut;

while(len--)
{
inA64Val = *pInA++;
alp64Val = *pAlp++;
inB64Val = *pInB++;

out8[7] = inA8[7] + ( ((inB8[7]-inA8[7])*gain[7]) >> SWOSD_ALPHA_QSHIFT );
out8[5] = inA8[5] + ( ((inB8[5]-inA8[5])*gain[5]) >> SWOSD_ALPHA_QSHIFT );
out8[3] = inA8[3] + ( ((inB8[3]-inA8[3])*gain[3]) >> SWOSD_ALPHA_QSHIFT );
out8[1] = inA8[1] + ( ((inB8[1]-inA8[1])*gain[1]) >> SWOSD_ALPHA_QSHIFT );
out8[6] = inA8[6] + ( ((inB8[6]-inA8[6])*gain[6]) >> SWOSD_ALPHA_QSHIFT );
out8[4] = inA8[4] + ( ((inB8[4]-inA8[4])*gain[4]) >> SWOSD_ALPHA_QSHIFT );
out8[2] = inA8[2] + ( ((inB8[2]-inA8[2])*gain[2]) >> SWOSD_ALPHA_QSHIFT );
out8[0] = inA8[0] + ( ((inB8[0]-inA8[0])*gain[0]) >> SWOSD_ALPHA_QSHIFT );

out8 += 8;
}
}

这个地方就是与关键色对比的地方

这个是yuyv数据  我传进去的y0x00 u0x80 v0x80应该对比回去掉0x000x800x000x80这中yuyv数据,现在就是字体周边的没有去掉。。。。。大神  如果你的是可以的，能不能发个代码参考一下。。。。