VideoRenderer_createOnGlThread().java

public void createOnGlThread() {

        // 1 texture to hold the video frame.
        int textures[] = new int[1];
        GLES20.glGenTextures(1, textures, 0);
        mTextureId = textures[0];
        int mTextureTarget = GLES11Ext.GL_TEXTURE_EXTERNAL_OES;
        GLES20.glBindTexture(mTextureTarget, mTextureId);

        GLES20.glTexParameteri(mTextureTarget, GLES20.GL_TEXTURE_MIN_FILTER,
                GLES20.GL_NEAREST);
        GLES20.glTexParameteri(mTextureTarget, GLES20.GL_TEXTURE_MAG_FILTER,
                GLES20.GL_NEAREST);

        videoTexture = new SurfaceTexture(mTextureId);
        videoTexture.setOnFrameAvailableListener(this);

        mTexCoordTransformationMatrix = new float[1][16];

        createQuardCoord();
        createQuadTextCoord();
        int vertexShader = loadGLShader(GLES20.GL_VERTEX_SHADER, VERTEX_SHADER);
        int fragmentShader = loadGLShader(
                GLES20.GL_FRAGMENT_SHADER, FRAGMENT_SHADER);

        mQuadProgram = GLES20.glCreateProgram();
        GLES20.glAttachShader(mQuadProgram, vertexShader);
        GLES20.glAttachShader(mQuadProgram, fragmentShader);
        GLES20.glLinkProgram(mQuadProgram);
        GLES20.glUseProgram(mQuadProgram);


        ShaderUtil.checkGLError(TAG, "Program creation");

        mQuadPositionParam = GLES20.glGetAttribLocation(mQuadProgram, "a_Position");
        mQuadTexCoordParam = GLES20.glGetAttribLocation(mQuadProgram, "a_TexCoord");
        mModelViewProjectionUniform = GLES20.glGetUniformLocation(
                mQuadProgram, "u_ModelViewProjection");

        ShaderUtil.checkGLError(TAG, "Program parameters");
        Matrix.setIdentityM(mModelMatrix, 0);

        initializeMediaPlayer();
    }