/*
|
* Copyright (C) 2014 The Android Open Source Project
|
*
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
* you may not use this file except in compliance with the License.
|
* You may obtain a copy of the License at
|
*
|
* http://www.apache.org/licenses/LICENSE-2.0
|
*
|
* Unless required by applicable law or agreed to in writing, software
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
* See the License for the specific language governing permissions and
|
* limitations under the License.
|
*/
|
|
package com.example.nativecodec;
|
|
import android.graphics.SurfaceTexture;
|
import android.util.Log;
|
|
import java.nio.ByteBuffer;
|
import java.nio.ByteOrder;
|
import java.nio.FloatBuffer;
|
|
import javax.microedition.khronos.egl.EGLConfig;
|
import javax.microedition.khronos.opengles.GL10;
|
|
import android.content.Context;
|
import android.opengl.GLES20;
|
import android.opengl.GLSurfaceView;
|
import android.opengl.Matrix;
|
import android.os.SystemClock;
|
import android.util.AttributeSet;
|
|
public class MyGLSurfaceView extends GLSurfaceView {
|
|
MyRenderer mRenderer;
|
|
public MyGLSurfaceView(Context context) {
|
this(context, null);
|
}
|
|
public MyGLSurfaceView(Context context, AttributeSet attributeSet) {
|
super(context, attributeSet);
|
init();
|
}
|
|
private void init() {
|
setEGLContextClientVersion(2);
|
mRenderer = new MyRenderer();
|
setRenderer(mRenderer);
|
Log.i("@@@", "setrenderer");
|
}
|
|
@Override
|
public void onPause() {
|
mRenderer.onPause();
|
super.onPause();
|
}
|
|
@Override
|
public void onResume() {
|
super.onResume();
|
mRenderer.onResume();
|
}
|
|
public SurfaceTexture getSurfaceTexture() {
|
return mRenderer.getSurfaceTexture();
|
}
|
}
|
|
class MyRenderer implements GLSurfaceView.Renderer, SurfaceTexture.OnFrameAvailableListener {
|
|
public MyRenderer() {
|
mVertices = ByteBuffer.allocateDirect(mVerticesData.length
|
* FLOAT_SIZE_BYTES).order(ByteOrder.nativeOrder()).asFloatBuffer();
|
mVertices.put(mVerticesData).position(0);
|
|
Matrix.setIdentityM(mSTMatrix, 0);
|
}
|
public void onPause() {
|
}
|
|
public void onResume() {
|
mLastTime = SystemClock.elapsedRealtimeNanos();
|
}
|
|
@Override
|
public void onDrawFrame(GL10 glUnused) {
|
synchronized(this) {
|
if (updateSurface) {
|
mSurface.updateTexImage();
|
|
mSurface.getTransformMatrix(mSTMatrix);
|
updateSurface = false;
|
}
|
}
|
|
// Ignore the passed-in GL10 interface, and use the GLES20
|
// class's static methods instead.
|
GLES20.glClear( GLES20.GL_DEPTH_BUFFER_BIT | GLES20.GL_COLOR_BUFFER_BIT);
|
GLES20.glUseProgram(mProgram);
|
checkGlError("glUseProgram");
|
|
GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
|
GLES20.glBindTexture(GL_TEXTURE_EXTERNAL_OES, mTextureID);
|
|
mVertices.position(VERTICES_DATA_POS_OFFSET);
|
GLES20.glVertexAttribPointer(maPositionHandle, 3, GLES20.GL_FLOAT, false,
|
VERTICES_DATA_STRIDE_BYTES, mVertices);
|
checkGlError("glVertexAttribPointer maPosition");
|
GLES20.glEnableVertexAttribArray(maPositionHandle);
|
checkGlError("glEnableVertexAttribArray maPositionHandle");
|
|
mVertices.position(VERTICES_DATA_UV_OFFSET);
|
GLES20.glVertexAttribPointer(maTextureHandle, 3, GLES20.GL_FLOAT, false,
|
VERTICES_DATA_STRIDE_BYTES, mVertices);
|
checkGlError("glVertexAttribPointer maTextureHandle");
|
GLES20.glEnableVertexAttribArray(maTextureHandle);
|
checkGlError("glEnableVertexAttribArray maTextureHandle");
|
|
long now = SystemClock.elapsedRealtimeNanos();
|
mRunTime += (now - mLastTime);
|
mLastTime = now;
|
double d = ((double)mRunTime) / 1000000000;
|
Matrix.setIdentityM(mMMatrix, 0);
|
Matrix.rotateM(mMMatrix, 0, 30, (float)Math.sin(d), (float)Math.cos(d), 0);
|
Matrix.multiplyMM(mMVPMatrix, 0, mVMatrix, 0, mMMatrix, 0);
|
Matrix.multiplyMM(mMVPMatrix, 0, mProjMatrix, 0, mMVPMatrix, 0);
|
|
GLES20.glUniformMatrix4fv(muMVPMatrixHandle, 1, false, mMVPMatrix, 0);
|
GLES20.glUniformMatrix4fv(muSTMatrixHandle, 1, false, mSTMatrix, 0);
|
|
GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, 0, 4);
|
checkGlError("glDrawArrays");
|
}
|
|
@Override
|
public void onSurfaceChanged(GL10 glUnused, int width, int height) {
|
// Ignore the passed-in GL10 interface, and use the GLES20
|
// class's static methods instead.
|
GLES20.glViewport(0, 0, width, height);
|
mRatio = (float) width / height;
|
Matrix.frustumM(mProjMatrix, 0, -mRatio, mRatio, -1, 1, 3, 7);
|
}
|
|
@Override
|
public void onSurfaceCreated(GL10 glUnused, EGLConfig config) {
|
// Ignore the passed-in GL10 interface, and use the GLES20
|
// class's static methods instead.
|
|
/* Set up alpha blending and an Android background color */
|
GLES20.glEnable(GLES20.GL_BLEND);
|
GLES20.glBlendFunc(GLES20.GL_SRC_ALPHA, GLES20.GL_ONE_MINUS_SRC_ALPHA);
|
GLES20.glClearColor(0.643f, 0.776f, 0.223f, 1.0f);
|
|
/* Set up shaders and handles to their variables */
|
mProgram = createProgram(mVertexShader, mFragmentShader);
|
if (mProgram == 0) {
|
return;
|
}
|
maPositionHandle = GLES20.glGetAttribLocation(mProgram, "aPosition");
|
checkGlError("glGetAttribLocation aPosition");
|
if (maPositionHandle == -1) {
|
throw new RuntimeException("Could not get attrib location for aPosition");
|
}
|
maTextureHandle = GLES20.glGetAttribLocation(mProgram, "aTextureCoord");
|
checkGlError("glGetAttribLocation aTextureCoord");
|
if (maTextureHandle == -1) {
|
throw new RuntimeException("Could not get attrib location for aTextureCoord");
|
}
|
|
muMVPMatrixHandle = GLES20.glGetUniformLocation(mProgram, "uMVPMatrix");
|
checkGlError("glGetUniformLocation uMVPMatrix");
|
if (muMVPMatrixHandle == -1) {
|
throw new RuntimeException("Could not get attrib location for uMVPMatrix");
|
}
|
|
muSTMatrixHandle = GLES20.glGetUniformLocation(mProgram, "uSTMatrix");
|
checkGlError("glGetUniformLocation uSTMatrix");
|
if (muSTMatrixHandle == -1) {
|
throw new RuntimeException("Could not get attrib location for uSTMatrix");
|
}
|
|
/*
|
* Create our texture. This has to be done each time the
|
* surface is created.
|
*/
|
|
int[] textures = new int[1];
|
GLES20.glGenTextures(1, textures, 0);
|
|
mTextureID = textures[0];
|
GLES20.glBindTexture(GL_TEXTURE_EXTERNAL_OES, mTextureID);
|
checkGlError("glBindTexture mTextureID");
|
|
// Can't do mipmapping with camera source
|
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);
|
// Clamp to edge is the only option
|
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);
|
checkGlError("glTexParameteri mTextureID");
|
|
/*
|
* Create the SurfaceTexture that will feed this textureID, and pass it to the camera
|
*/
|
|
mSurface = new SurfaceTexture(mTextureID);
|
mSurface.setOnFrameAvailableListener(this);
|
|
Matrix.setLookAtM(mVMatrix, 0, 0, 0, 4f, 0f, 0f, 0f, 0f, 1.0f, 0.0f);
|
|
synchronized(this) {
|
updateSurface = false;
|
}
|
}
|
|
@Override
|
synchronized public void onFrameAvailable(SurfaceTexture surface) {
|
/* For simplicity, SurfaceTexture calls here when it has new
|
* data available. Call may come in from some random thread,
|
* so let's be safe and use synchronize. No OpenGL calls can be done here.
|
*/
|
updateSurface = true;
|
//Log.v(TAG, "onFrameAvailable " + surface.getTimestamp());
|
}
|
|
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) {
|
Log.e(TAG, "Could not compile shader " + shaderType + ":");
|
Log.e(TAG, GLES20.glGetShaderInfoLog(shader));
|
GLES20.glDeleteShader(shader);
|
shader = 0;
|
}
|
}
|
return shader;
|
}
|
|
private int createProgram(String vertexSource, String fragmentSource) {
|
int vertexShader = loadShader(GLES20.GL_VERTEX_SHADER, vertexSource);
|
if (vertexShader == 0) {
|
return 0;
|
}
|
int pixelShader = loadShader(GLES20.GL_FRAGMENT_SHADER, fragmentSource);
|
if (pixelShader == 0) {
|
return 0;
|
}
|
|
int program = GLES20.glCreateProgram();
|
if (program != 0) {
|
GLES20.glAttachShader(program, vertexShader);
|
checkGlError("glAttachShader");
|
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) {
|
Log.e(TAG, "Could not link program: ");
|
Log.e(TAG, GLES20.glGetProgramInfoLog(program));
|
GLES20.glDeleteProgram(program);
|
program = 0;
|
}
|
}
|
return program;
|
}
|
|
private void checkGlError(String op) {
|
int error;
|
while ((error = GLES20.glGetError()) != GLES20.GL_NO_ERROR) {
|
Log.e(TAG, op + ": glError " + error);
|
throw new RuntimeException(op + ": glError " + error);
|
}
|
}
|
|
private static final int FLOAT_SIZE_BYTES = 4;
|
private static final int VERTICES_DATA_STRIDE_BYTES = 5 * FLOAT_SIZE_BYTES;
|
private static final int VERTICES_DATA_POS_OFFSET = 0;
|
private static final int VERTICES_DATA_UV_OFFSET = 3;
|
private final float[] mVerticesData = {
|
// X, Y, Z, U, V
|
-1.25f, -1.0f, 0, 0.f, 0.f,
|
1.25f, -1.0f, 0, 1.f, 0.f,
|
-1.25f, 1.0f, 0, 0.f, 1.f,
|
1.25f, 1.0f, 0, 1.f, 1.f,
|
};
|
|
private FloatBuffer mVertices;
|
|
private final String mVertexShader =
|
"uniform mat4 uMVPMatrix;\n" +
|
"uniform mat4 uSTMatrix;\n" +
|
"attribute vec4 aPosition;\n" +
|
"attribute vec4 aTextureCoord;\n" +
|
"varying vec2 vTextureCoord;\n" +
|
"void main() {\n" +
|
" gl_Position = uMVPMatrix * aPosition;\n" +
|
" vTextureCoord = (uSTMatrix * aTextureCoord).xy;\n" +
|
"}\n";
|
|
private final String mFragmentShader =
|
"#extension GL_OES_EGL_image_external : require\n" +
|
"precision mediump float;\n" +
|
"varying vec2 vTextureCoord;\n" +
|
"uniform samplerExternalOES sTexture;\n" +
|
"void main() {\n" +
|
" gl_FragColor = texture2D(sTexture, vTextureCoord);\n" +
|
"}\n";
|
|
private float[] mMVPMatrix = new float[16];
|
private float[] mProjMatrix = new float[16];
|
private float[] mMMatrix = new float[16];
|
private float[] mVMatrix = new float[16];
|
private float[] mSTMatrix = new float[16];
|
|
private int mProgram;
|
private int mTextureID;
|
private int muMVPMatrixHandle;
|
private int muSTMatrixHandle;
|
private int maPositionHandle;
|
private int maTextureHandle;
|
|
private float mRatio = 1.0f;
|
private SurfaceTexture mSurface;
|
private boolean updateSurface = false;
|
private long mLastTime = -1;
|
private long mRunTime = 0;
|
|
private static final String TAG = "MyRenderer";
|
|
// Magic key
|
private static final int GL_TEXTURE_EXTERNAL_OES = 0x8D65;
|
|
public SurfaceTexture getSurfaceTexture() {
|
return mSurface;
|
}
|
}
|
