小编btx*_*qdr的帖子

花了一些时间后,最好问一下.谢谢你的帮助,伙计们!

题

• 如何将视频帧从MediaPlayer或VideoView渲染到SurfaceTexture或OpenGL纹理,以便通过GLSL更改纹理/片段颜色？(我们需要它用于花哨的GLES/GLSL视频处理程序.)

上下文

a)Google TV(LG G2 2012设备)是Android 3.2设备,仅支持SDK(无NDK)

b)从相机到SurfaceTexture很容易渲染,但是如何在Android 3.x中将视频渲染到SurfaceTexture？有关相机解决方案,请参阅下文

c)我已经将视频帧渲染到GLView/GLRenderer,但我没有抓取帧以通过GLSL更改它.似乎没有用.但我需要可访问的GLES/GLSL纹理和视频数据进行视频处理:

MainActivity类:

public void onCreate(Bundle state) {
    super.onCreate(state);

    m_View = new GLSimpleView(this);
    setContentView(m_View);

    m_Holder = m_View.getHolder();
    m_Holder.addCallback(this);
    m_Holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
}

GLSimpleView类:

public GLSimpleView(Context context) {
    super(context);

    m_Renderer = new GLTextureRenderer(context); 
    this.setRenderer(m_Renderer);
}

GLTextureRender类:

int[] textures = new int[1];
GLES20.glGenTextures(1, textures, 0);

m_SurfaceTexture = textures[0];
GLES20.glBindTexture(GL_TEXTURE_EXTERNAL_OES, mTextureID);

GLES20.glTexParameterf(GL_TEXTURE_EXTERNAL_OES, GLES20.GL_TEXTURE_MIN_FILTER, GLES20.GL_NEAREST);
GLES20.glTexParameterf(GL_TEXTURE_EXTERNAL_OES, GLES20.GL_TEXTURE_MAG_FILTER, GLES20.GL_LINEAR);

GLES20.glTexParameteri(GL_TEXTURE_EXTERNAL_OES, GLES20.GL_TEXTURE_WRAP_S, GLES20.GL_CLAMP_TO_EDGE);
GLES20.glTexParameteri(GL_TEXTURE_EXTERNAL_OES, GLES20.GL_TEXTURE_WRAP_T, GLES20.GL_CLAMP_TO_EDGE);

m_Surface = new SurfaceTexture(m_SurfaceTexture);
m_Surface.setOnFrameAvailableListener(this);

// THIS ONE DOESN'T WORK WITH ANDROID …