package com.example.datalibrary.deptrum;
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import android.opengl.GLES20;
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import com.example.datalibrary.deptrum.openglhelper.RGBRendThread;
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import java.nio.Buffer;
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import java.nio.ByteBuffer;
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import java.nio.ByteOrder;
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/**
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* step to use:<br>
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* 1. new GLProgram()<br>
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* 2. buildProgram()<br>
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* 3. buildTextures()<br>
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* 4. drawFrame()<br>
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*/
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public class RGB24GLProgram {
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private static final String VERTEX_SHADER =
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"uniform mat4 uMVPMatrix;\n"
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+ "attribute vec4 vPosition;\n"
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+ "attribute vec2 a_texCoord;\n"
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+ "varying vec2 tc;\n"
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+ "void main() {\n"
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+ "gl_Position = uMVPMatrix * vPosition;\n"
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+ "tc = a_texCoord;\n"
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+ "}\n";
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private static final String FRAGMENT_SHADER =
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"precision mediump float;\n"
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+ "uniform sampler2D tex_y;\n"
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+ "uniform sampler2D tex_u;\n"
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+ "uniform sampler2D tex_v;\n"
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+ "varying vec2 tc;\n"
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+ "void main() {\n"
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+ "vec4 c = vec4((texture2D(tex_y, tc).r - 16./255.) * 1.164);\n"
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+ "vec4 U = vec4(texture2D(tex_u, tc).r - 128./255.);\n"
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+ "vec4 V = vec4(texture2D(tex_v, tc).r - 128./255.);\n"
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+ "c += V * vec4(1.596, -0.813, 0, 0);\n"
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+ "c += U * vec4(0, -0.392, 2.017, 0);\n"
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+ "c.a = 1.0;\n"
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+ "gl_FragColor = c;\n"
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+ "}\n";
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private static final String VERTEX_SHADER1 =
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"uniform mat4 uMVPMatrix;\n"
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+ "attribute vec4 vPosition;\n"
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+ "attribute vec2 a_texCoord;\n"
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+ "varying vec2 tc;\n"
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+ "void main() {\n"
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+ "gl_Position = uMVPMatrix * vPosition;\n"
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+ "tc = a_texCoord;\n"
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+ "}\n";
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private static final String FRAGMENT_SHADER1 =
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"precision mediump float;\n"
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+ "uniform sampler2D tex_y;\n"
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+ "varying vec2 tc;\n"
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+ "void main() {\n"
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+ "gl_FragColor = texture2D(tex_y,tc);\n"
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+ "}\n";
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private float[] mViewMatrix = new float[16];
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private int mVPMatrixHandle = -1;
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static float[] s0Matrix = {
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1.0f, 0.0f, 0f, 0.0f,
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0.0f, 1.0f, 0.0f, 0.0f,
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0.0f, 0.0f, 1.0f, 0.0f,
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0.0f, 0.0f, 0.0f, 1.0f,
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};
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static float[] s0MirrorMatrix = {
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-1.0f, 0.0f, 0f, 0.0f,
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0.0f, 1.0f, 0.0f, 0.0f,
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0.0f, 0.0f, 1.0f, 0.0f,
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0.0f, 0.0f, 0.0f, 1.0f,
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};
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static float[] s90Matrix = {
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0.0f, -1.0f, 0f, 0.0f,
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1.0f, 0.0f, 0.0f, 0.0f,
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0.0f, 0.0f, 1.0f, 0.0f,
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0.0f, 0.0f, 0.0f, 1.0f,
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};
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static float[] s90MirrorMatrix = {
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0.0f, -1.0f, 0f, 0.0f,
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-1.0f, 0.0f, 0.0f, 0.0f,
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0.0f, 0.0f, 1.0f, 0.0f,
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0.0f, 0.0f, 0.0f, 1.0f,
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};
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static float[] s180Matrix = {
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-1.0f, 0.0f, 0f, 0.0f,
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0.0f, -1.0f, 0.0f, 0.0f,
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0.0f, 0.0f, 1.0f, 0.0f,
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0.0f, 0.0f, 0.0f, 1.0f,
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};
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static float[] s180MirrorMatrix = {
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1.0f, 0.0f, 0f, 0.0f,
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0.0f, -1.0f, 0.0f, 0.0f,
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0.0f, 0.0f, 1.0f, 0.0f,
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0.0f, 0.0f, 0.0f, 1.0f,
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};
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static float[] s270Matrix = {
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0.0f, 1.0f, 0f, 0.0f,
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-1.0f, 0.0f, 0.0f, 0.0f,
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0.0f, 0.0f, 1.0f, 0.0f,
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0.0f, 0.0f, 0.0f, 1.0f,
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};
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static float[] s270MirrorMatrix = {
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0.0f, 1.0f, 0f, 0.0f,
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1.0f, 0.0f, 0.0f, 0.0f,
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0.0f, 0.0f, 1.0f, 0.0f,
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0.0f, 0.0f, 0.0f, 1.0f,
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};
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static float[] squareVertices = {
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-1.0f, -1.0f, 1.0f, -1.0f, -1.0f, 1.0f, 1.0f, 1.0f,
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}; /*fullscreen*/
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static float[] squareVertices1 = {
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-1.0f, 0.0f, 0.0f, 0.0f, -1.0f, 1.0f, 0.0f, 1.0f,
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}; /*left-top*/
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static float[] squareVertices2 = {
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0.0f, -1.0f, 1.0f, -1.0f, 0.0f, 0.0f, 1.0f, 0.0f,
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}; /*right-bottom*/
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static float[] squareVertices3 = {
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-1.0f, -1.0f, 0.0f, -1.0f, -1.0f, 0.0f, 0.0f, 0.0f,
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}; /*left-bottom*/
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static float[] squareVertices4 = {
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0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 1.0f,
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}; /*right-top*/
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private static float[] coordVertices = {
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0.0f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f,
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}; /*whole-texture*/
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public final int mWinPosition;
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private int mGLProgram;
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private int mGLTextureI;
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private int mGLTextureII;
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private int mGLTextureIII;
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private int mGLIndexI;
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private int mGLIndexII;
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private int mGLTIndexIII;
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private float[] mGLVertices;
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private int mPositionHandle = -1;
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private int mCoordHandle = -1;
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private int mYhandle = -1;
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private int mUhandle = -1;
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private int mVhandle = -1;
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private int mYtid = -1;
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private int mUtid = -1;
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private int mVtid = -1;
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private ByteBuffer mVerticeBuffer;
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private ByteBuffer mCoordBuffer;
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private int mVideoWidth = -1;
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private int mVideoHeight = -1;
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private boolean isProgBuilt = false;
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/**
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* position can only be 0~4:<br>
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* fullscreen => 0<br>
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* left-top => 1<br>
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* right-top => 2<br>
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* left-bottom => 3<br>
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* right-bottom => 4
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*/
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public RGB24GLProgram(int position) {
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if (position < 0 || position > 4) {
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throw new RuntimeException("Index can only be 0 to 4");
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}
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mWinPosition = position;
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setup();
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}
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/**
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* prepared for later use
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*/
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private void setup() {
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switch (mWinPosition) {
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case 1:
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mGLVertices = squareVertices1;
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mGLTextureI = GLES20.GL_TEXTURE0;
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mGLTextureII = GLES20.GL_TEXTURE1;
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mGLTextureIII = GLES20.GL_TEXTURE2;
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mGLIndexI = 0;
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mGLIndexII = 1;
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mGLTIndexIII = 2;
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break;
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case 2:
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mGLVertices = squareVertices2;
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mGLTextureI = GLES20.GL_TEXTURE3;
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mGLTextureII = GLES20.GL_TEXTURE4;
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mGLTextureIII = GLES20.GL_TEXTURE5;
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mGLIndexI = 3;
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mGLIndexII = 4;
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mGLTIndexIII = 5;
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break;
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case 3:
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mGLVertices = squareVertices3;
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mGLTextureI = GLES20.GL_TEXTURE6;
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mGLTextureII = GLES20.GL_TEXTURE7;
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mGLTextureIII = GLES20.GL_TEXTURE8;
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mGLIndexI = 6;
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mGLIndexII = 7;
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mGLTIndexIII = 8;
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break;
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case 4:
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mGLVertices = squareVertices4;
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mGLTextureI = GLES20.GL_TEXTURE9;
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mGLTextureII = GLES20.GL_TEXTURE10;
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mGLTextureIII = GLES20.GL_TEXTURE11;
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mGLIndexI = 9;
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mGLIndexII = 10;
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mGLTIndexIII = 11;
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break;
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case 0:
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default:
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mGLVertices = squareVertices;
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mGLTextureI = GLES20.GL_TEXTURE0;
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mGLTextureII = GLES20.GL_TEXTURE1;
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mGLTextureIII = GLES20.GL_TEXTURE2;
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mGLIndexI = 0;
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mGLIndexII = 1;
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mGLTIndexIII = 2;
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break;
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}
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}
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public boolean isProgramBuilt() {
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return isProgBuilt;
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}
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public void buildProgram() {
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if (mGLProgram <= 0) {
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mGLProgram = createProgram(VERTEX_SHADER1, FRAGMENT_SHADER1);
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}
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/*
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* get handle for "vPosition" and "a_texCoord"
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*/
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try {
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// mPositionHandle = GLES20.glGetAttribLocation(mGLProgram, "vPosition");
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// checkGlError("glGetAttribLocation vPosition");
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// if (mPositionHandle == -1) {
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// throw new RuntimeException("Could not get attribute location for
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// vPosition");
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// }
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// mCoordHandle = GLES20.glGetAttribLocation(mGLProgram, "a_texCoord");
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// checkGlError("glGetAttribLocation a_texCoord");
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// if (mCoordHandle == -1) {
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// throw new RuntimeException("Could not get attribute location for
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// a_texCoord");
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// }
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// /*
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// * get uniform location for y/u/v, we pass data through these uniforms
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// */
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// mYhandle = GLES20.glGetUniformLocation(mGLProgram, "tex_y");
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// checkGlError("glGetUniformLocation tex_y");
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// if (mYhandle == -1) {
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// throw new RuntimeException("Could not get uniform location for tex_y");
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// }
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// mUhandle = GLES20.glGetUniformLocation(mGLProgram, "tex_u");
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// checkGlError("glGetUniformLocation tex_u");
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// if (mUhandle == -1) {
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// throw new RuntimeException("Could not get uniform location for tex_u");
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// }
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// mVhandle = GLES20.glGetUniformLocation(mGLProgram, "tex_v");
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// checkGlError("glGetUniformLocation tex_v");
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// if (mVhandle == -1) {
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// throw new RuntimeException("Could not get uniform location for tex_v");
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// }
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mVPMatrixHandle = GLES20.glGetUniformLocation(mGLProgram, "uMVPMatrix");
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mPositionHandle = GLES20.glGetAttribLocation(mGLProgram, "vPosition");
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RGBRendThread.ShaderUtil.checkGlError("glGetAttribLocation vPosition");
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if (mPositionHandle == -1) {
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throw new RuntimeException("Could not get attribute location for vPosition");
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}
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mCoordHandle = GLES20.glGetAttribLocation(mGLProgram, "a_texCoord");
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RGBRendThread.ShaderUtil.checkGlError("glGetAttribLocation a_texCoord");
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if (mCoordHandle == -1) {
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throw new RuntimeException("Could not get attribute location for a_texCoord");
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}
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mYhandle = GLES20.glGetUniformLocation(mGLProgram, "tex_y");
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RGBRendThread.ShaderUtil.checkGlError("glGetUniformLocation tex_y");
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if (mYhandle == -1) {
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throw new RuntimeException("Could not get uniform location for tex_y");
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}
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isProgBuilt = true;
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} catch (RuntimeException e) {
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e.printStackTrace();
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}
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}
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public void releaseProgram() {
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GLES20.glUseProgram(0);
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if (mGLProgram >= 0) {
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GLES20.glDeleteProgram(mGLProgram);
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}
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mGLProgram = -1;
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isProgBuilt = false;
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}
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/**
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* build a set of textures, one for R, one for G, and one for B.
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*/
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public void buildTextures(Buffer y, Buffer u, Buffer v, int width, int height) {
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boolean videoSizeChanged = (width != mVideoWidth || height != mVideoHeight);
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if (videoSizeChanged) {
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mVideoWidth = width;
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mVideoHeight = height;
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}
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// building texture for Y data
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if (mYtid < 0 || videoSizeChanged) {
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if (mYtid >= 0) {
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GLES20.glDeleteTextures(1, new int[]{mYtid}, 0);
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checkGlError("glDeleteTextures");
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}
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// GLES20.glPixelStorei(GLES20.GL_UNPACK_ALIGNMENT, 1);
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int[] textures = new int[1];
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GLES20.glGenTextures(1, textures, 0);
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checkGlError("glGenTextures");
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mYtid = textures[0];
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}
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GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, mYtid);
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checkGlError("glBindTexture");
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GLES20.glTexImage2D(
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GLES20.GL_TEXTURE_2D,
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0,
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GLES20.GL_LUMINANCE,
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mVideoWidth,
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mVideoHeight,
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0,
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GLES20.GL_LUMINANCE,
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GLES20.GL_UNSIGNED_BYTE,
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y);
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checkGlError("glTexImage2D");
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GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MIN_FILTER, GLES20.GL_NEAREST);
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GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MAG_FILTER, GLES20.GL_LINEAR);
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GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_S, GLES20.GL_CLAMP_TO_EDGE);
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GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_T, GLES20.GL_CLAMP_TO_EDGE);
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// building texture for U data
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if (mUtid < 0 || videoSizeChanged) {
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if (mUtid >= 0) {
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GLES20.glDeleteTextures(1, new int[]{mUtid}, 0);
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checkGlError("glDeleteTextures");
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}
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int[] textures = new int[1];
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GLES20.glGenTextures(1, textures, 0);
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checkGlError("glGenTextures");
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mUtid = textures[0];
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}
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GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, mUtid);
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GLES20.glTexImage2D(
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GLES20.GL_TEXTURE_2D,
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0,
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GLES20.GL_LUMINANCE,
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mVideoWidth / 2,
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mVideoHeight / 2,
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0,
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GLES20.GL_LUMINANCE,
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GLES20.GL_UNSIGNED_BYTE,
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u);
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GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MIN_FILTER, GLES20.GL_NEAREST);
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GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MAG_FILTER, GLES20.GL_LINEAR);
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GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_S, GLES20.GL_CLAMP_TO_EDGE);
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GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_T, GLES20.GL_CLAMP_TO_EDGE);
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// building texture for V data
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if (mVtid < 0 || videoSizeChanged) {
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if (mVtid >= 0) {
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GLES20.glDeleteTextures(1, new int[]{mVtid}, 0);
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checkGlError("glDeleteTextures");
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}
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int[] textures = new int[1];
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GLES20.glGenTextures(1, textures, 0);
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checkGlError("glGenTextures");
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mVtid = textures[0];
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}
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GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, mVtid);
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GLES20.glTexImage2D(
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GLES20.GL_TEXTURE_2D,
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0,
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GLES20.GL_LUMINANCE,
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mVideoWidth / 2,
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mVideoHeight / 2,
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0,
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GLES20.GL_LUMINANCE,
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GLES20.GL_UNSIGNED_BYTE,
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v);
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GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MIN_FILTER, GLES20.GL_NEAREST);
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GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MAG_FILTER, GLES20.GL_LINEAR);
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GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_S, GLES20.GL_CLAMP_TO_EDGE);
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GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_T, GLES20.GL_CLAMP_TO_EDGE);
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}
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public void buildTextures(Buffer rgbBuffer, int width, int height, boolean hasAlpha) {
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boolean videoSizeChanged = (width != mVideoWidth || height != mVideoHeight);
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if (videoSizeChanged) {
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mVideoWidth = width;
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mVideoHeight = height;
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}
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if (mYtid < 0 || videoSizeChanged) {
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if (mYtid >= 0) {
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GLES20.glDeleteTextures(1, new int[]{mYtid}, 0);
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RGBRendThread.ShaderUtil.checkGlError("glDeleteTextures");
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}
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int[] textures = new int[1];
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GLES20.glGenTextures(1, textures, 0);
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RGBRendThread.ShaderUtil.checkGlError("glGenTextures");
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mYtid = textures[0];
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}
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GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, mYtid);
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RGBRendThread.ShaderUtil.checkGlError("glBindTexture");
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GLES20.glTexImage2D(
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GLES20.GL_TEXTURE_2D,
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0,
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hasAlpha ? GLES20.GL_RGBA : GLES20.GL_RGB,
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mVideoWidth,
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mVideoHeight,
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0,
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hasAlpha ? GLES20.GL_RGBA : GLES20.GL_RGB,
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GLES20.GL_UNSIGNED_BYTE,
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rgbBuffer);
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RGBRendThread.ShaderUtil.checkGlError("glTexImage2D");
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GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MIN_FILTER, GLES20.GL_NEAREST);
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GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MAG_FILTER, GLES20.GL_LINEAR);
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GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_S, GLES20.GL_CLAMP_TO_EDGE);
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GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_T, GLES20.GL_CLAMP_TO_EDGE);
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}
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public void setDisplayOrientation(int degrees, boolean needMirror) {
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if (degrees == 0) {
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if (needMirror) {
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mViewMatrix = s0MirrorMatrix;
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} else {
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mViewMatrix = s0Matrix;
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}
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} else if (degrees == 90) {
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if (needMirror) {
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mViewMatrix = s90MirrorMatrix;
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} else {
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mViewMatrix = s90Matrix;
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}
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} else if (degrees == 180) {
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if (needMirror) {
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mViewMatrix = s180MirrorMatrix;
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} else {
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mViewMatrix = s180Matrix;
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}
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} else if (degrees == 270) {
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if (needMirror) {
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mViewMatrix = s270MirrorMatrix;
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} else {
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mViewMatrix = s270Matrix;
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}
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} else {
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}
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}
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/**
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* render the frame the YUV data will be converted to RGB by shader.
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*/
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public void drawFrame() {
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if (null == mVerticeBuffer) {
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return;
|
}
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GLES20.glUseProgram(mGLProgram);
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checkGlError("glUseProgram");
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GLES20.glUniformMatrix4fv(mVPMatrixHandle, 1, false, mViewMatrix, 0);
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GLES20.glVertexAttribPointer(mPositionHandle, 2, GLES20.GL_FLOAT, false, 8, mVerticeBuffer);
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checkGlError("glVertexAttribPointer mPositionHandle");
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GLES20.glEnableVertexAttribArray(mPositionHandle);
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GLES20.glVertexAttribPointer(mCoordHandle, 2, GLES20.GL_FLOAT, false, 8, mCoordBuffer);
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checkGlError("glVertexAttribPointer maTextureHandle");
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GLES20.glEnableVertexAttribArray(mCoordHandle);
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// bind textures
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GLES20.glActiveTexture(mGLTextureI);
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GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, mYtid);
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GLES20.glUniform1i(mYhandle, mGLIndexI);
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// GLES20.glActiveTexture(mGLTextureII);
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// GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, mUtid);
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// GLES20.glUniform1i(mUhandle, mGLIndexII);
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//
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// GLES20.glActiveTexture(mGLTextureIII);
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// GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, mVtid);
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// GLES20.glUniform1i(mVhandle, mGLTIndexIII);
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GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, 0, 4);
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GLES20.glFinish();
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GLES20.glDisableVertexAttribArray(mPositionHandle);
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GLES20.glDisableVertexAttribArray(mCoordHandle);
|
}
|
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/**
|
* create program and load shaders, fragment shader is very important.
|
*/
|
public int createProgram(String vertexSource, String fragmentSource) {
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// create shaders
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int vertexShader = loadShader(GLES20.GL_VERTEX_SHADER, vertexSource);
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int pixelShader = loadShader(GLES20.GL_FRAGMENT_SHADER, fragmentSource);
|
// just check
|
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int program = GLES20.glCreateProgram();
|
if (program != 0) {
|
GLES20.glAttachShader(program, vertexShader);
|
checkGlError("glAttachShader");
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GLES20.glAttachShader(program, pixelShader);
|
checkGlError("glAttachShader");
|
GLES20.glLinkProgram(program);
|
int[] linkStatus = new int[1];
|
GLES20.glGetProgramiv(program, GLES20.GL_LINK_STATUS, linkStatus, 0);
|
if (linkStatus[0] != GLES20.GL_TRUE) {
|
GLES20.glDeleteProgram(program);
|
program = 0;
|
}
|
}
|
return program;
|
}
|
|
/**
|
* create shader with given source.
|
*/
|
private int loadShader(int shaderType, String source) {
|
int shader = GLES20.glCreateShader(shaderType);
|
if (shader != 0) {
|
GLES20.glShaderSource(shader, source);
|
GLES20.glCompileShader(shader);
|
int[] compiled = new int[1];
|
GLES20.glGetShaderiv(shader, GLES20.GL_COMPILE_STATUS, compiled, 0);
|
if (compiled[0] == 0) {
|
GLES20.glDeleteShader(shader);
|
shader = 0;
|
}
|
}
|
return shader;
|
}
|
|
/**
|
* these two buffers are used for holding vertices, screen vertices and texture vertices.
|
*/
|
void createBuffers(float[] vert) {
|
mVerticeBuffer = ByteBuffer.allocateDirect(vert.length * 4);
|
mVerticeBuffer.order(ByteOrder.nativeOrder());
|
mVerticeBuffer.asFloatBuffer().put(vert);
|
mVerticeBuffer.position(0);
|
|
if (mCoordBuffer == null) {
|
mCoordBuffer = ByteBuffer.allocateDirect(coordVertices.length * 4);
|
mCoordBuffer.order(ByteOrder.nativeOrder());
|
mCoordBuffer.asFloatBuffer().put(coordVertices);
|
mCoordBuffer.position(0);
|
}
|
}
|
|
private void checkGlError(String op) {
|
int error;
|
while ((error = GLES20.glGetError()) != GLES20.GL_NO_ERROR) {
|
// throw new RuntimeException(op + ": glError " + error);
|
}
|
}
|
}
|
