在Android上的OpenGL中绘制视频帧(Drawing Video Frames in OpenGL on Android)

 我目前正在研究一种在Android上通过OpenGL ES 1.0显示视频帧（作为位图）的系统。 我的问题是我无法获得超过10 fps的速度。 
 
 在做了一些测试之后，我已经确定最大的瓶颈之一是需要位图使其宽度和高度都是2的幂。例如，640x480视频必须扩展到1024x1024。 没有缩放，我已经能够获得大约40-50fps，但纹理只是显示为白色，这对我没有好处。 
 
 我知道OpenGL ES 2.0支持使用两种纹理的非强大功能，但我没有使用着色器/ 2.0中的任何新功能的经验 
 
 有什么办法可以解决这个问题吗？ 与我的相比，其他视频播放如何获得如此好的表现？ 我已经包含了一些代码供参考。 
 
private Bitmap makePowerOfTwo(Bitmap bitmap)
{
    // If one of the bitmap's resolutions is not a power of two
    if(!isPowerOfTwo(bitmap.getWidth()) || !isPowerOfTwo(bitmap.getHeight()))
    {
        int newWidth = nextPowerOfTwo(bitmap.getWidth());
        int newHeight = nextPowerOfTwo(bitmap.getHeight());

        // Generate a new bitmap which has the needed padding
        return Bitmap.createScaledBitmap(bitmap, newWidth, newHeight, true);
    }
    else
    {
        return bitmap;
    }
}

private static boolean isPowerOfTwo(int num)
{
    // Check if a bitwise and of the number and itself minus one is zero
    return (num & (num - 1)) == 0;
}

private static int nextPowerOfTwo(int num)
{
    if(num <= 0)
    {
        return 0;
    }

    int nextPowerOfTwo = 1;

    while(nextPowerOfTwo < num)
    {
        nextPowerOfTwo <<= 1; // Bitwise shift left one bit
    }

    return nextPowerOfTwo;
}

I'm currently working on a system which displays video frames (as bitmaps) via OpenGL ES 1.0 on Android. My issue is that I have not been able to get more than about 10 fps.
 
After doing some testing, I've determined that one of the biggest bottlenecks is the need for the bitmap to have its width and height both be a power of 2. A 640x480 video has to be scaled up to 1024x1024, for example. Without the scaling, I've been able to get about 40-50fps, but the texture just appears white, which does me no good.
 
I know that OpenGL ES 2.0 supports using non-power of two textures, but I have no experience with shaders / anything else new in 2.0
 
Is there any way I can get around this issue? How do other video plays get such good performance in comparison to what I have? I have included some code for reference.
 
private Bitmap makePowerOfTwo(Bitmap bitmap)
{
    // If one of the bitmap's resolutions is not a power of two
    if(!isPowerOfTwo(bitmap.getWidth()) || !isPowerOfTwo(bitmap.getHeight()))
    {
        int newWidth = nextPowerOfTwo(bitmap.getWidth());
        int newHeight = nextPowerOfTwo(bitmap.getHeight());

        // Generate a new bitmap which has the needed padding
        return Bitmap.createScaledBitmap(bitmap, newWidth, newHeight, true);
    }
    else
    {
        return bitmap;
    }
}

private static boolean isPowerOfTwo(int num)
{
    // Check if a bitwise and of the number and itself minus one is zero
    return (num & (num - 1)) == 0;
}

private static int nextPowerOfTwo(int num)
{
    if(num <= 0)
    {
        return 0;
    }

    int nextPowerOfTwo = 1;

    while(nextPowerOfTwo < num)
    {
        nextPowerOfTwo <<= 1; // Bitwise shift left one bit
    }

    return nextPowerOfTwo;
}

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