onPreviewFrame的调用

来源：互联网发布：广联达软件定额编辑：程序博客网时间：2024/05/20 06:09

把预览的图片数据处理一下就好，很自然的我只是用了onPreviewFrame调用，考虑处理传递进来的data数据流就是了。

data字节流默认是YCbCr_420_SP

有人提供了这么一段转换的代码：将data转为了bitmap

public static BitmaprawByteArray2RGBABitmap2(byte[] data, int width, int height) {

int frameSize = width *height;

int[] rgba = newint[frameSize];

for (int i = 0; i < height; i++)

for (int j= 0; j < width; j++) {

int y = (0xff& ((int) data[i * width + j]));

int u = (0xff& ((int) data[frameSize + (i>> 1) * width + (j &~1) + 0]));

int v = (0xff& ((int) data[frameSize + (i>> 1) * width + (j &~1) + 1]));

y = y < 16 ?16 : y;

int r = Math.round(1.164f *(y - 16) + 1.596f * (v - 128));

int g = Math.round(1.164f *(y - 16) - 0.813f * (v - 128) - 0.391f * (u - 128));

int b = Math.round(1.164f *(y - 16) + 2.018f * (u - 128));

r = r < 0 ? 0: (r > 255 ? 255 : r);

g = g < 0 ? 0: (g > 255 ? 255 : g);

b = b < 0 ? 0: (b > 255 ? 255 : b);

rgba[i * width + j] =0xff000000 + (b << 16) + (g<< 8) + r;

}

Bitmap bmp =Bitmap.createBitmap(width, height, Bitmap.Config.RGB_565);

bmp.setPixels(rgba, 0 ,width, 0, 0, width, height);

return bmp;

}

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