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PngGLRender.java
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PngGLRender.java
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package com.tby.sample.libpag.openGL;
import android.content.Context;
import android.graphics.Camera;
import android.graphics.Matrix;
import android.opengl.GLES20;
import android.util.Log;
import org.libpag.PAGFile;
import org.libpag.PAGImage;
import org.libpag.PAGPlayer;
import org.libpag.PAGSurface;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.FloatBuffer;
import javax.microedition.khronos.opengles.GL10;
public class PngGLRender {
private static final String TAG = "GLRender";
private int pngTextureId;
private PAGPlayer pagPlayer;
private Context context;
private long duration;
int mWidth = 0;
int mHeight = 0;
private long timestamp = 0;
private static final String VERTEX_MAIN =
"attribute vec2 vPosition;\n" +
"attribute vec2 vTexCoord;\n" +
"varying vec2 texCoord;\n" +
"\n" +
"void main() {\n" +
" texCoord = vTexCoord;\n" +
" gl_Position = vec4 ( vPosition.x, vPosition.y, 0.0, 1.0 );\n" +
"}";
private static final String FRAGMENT_MAIN =
"precision mediump float;\n" +
"\n" +
"varying vec2 texCoord;\n" +
"uniform sampler2D sTexture;\n" +
"\n" +
"void main() {\n" +
" gl_FragColor = texture2D(sTexture, texCoord);\n" +
"}";
static final float SQUARE_COORDS[] = {
1.0f, -1.0f,
-1.0f, -1.0f,
1.0f, 1.0f,
-1.0f, 1.0f,
};
static final float TEXTURE_COORDS[] = {
1f, 1f,
0f, 1f,
1f, 0f,
0f, 0f
};
private int mProgram;
static FloatBuffer VERTEX_BUF, TEXTURE_COORD_BUF;
private int viewWidth;
private int viewHeight;
private void initShader() {
if (VERTEX_BUF == null) {
VERTEX_BUF = ByteBuffer.allocateDirect(SQUARE_COORDS.length * 4)
.order(ByteOrder.nativeOrder()).asFloatBuffer();
VERTEX_BUF.put(SQUARE_COORDS);
VERTEX_BUF.position(0);
}
if (TEXTURE_COORD_BUF == null) {
TEXTURE_COORD_BUF = ByteBuffer.allocateDirect(TEXTURE_COORDS.length * 4)
.order(ByteOrder.nativeOrder()).asFloatBuffer();
TEXTURE_COORD_BUF.put(TEXTURE_COORDS);
TEXTURE_COORD_BUF.position(0);
}
if (mProgram == 0) {
mProgram = GLUtil.buildProgram(VERTEX_MAIN, FRAGMENT_MAIN);
}
}
public PngGLRender(Context context){
this.context = context;
}
private int cameraTex = 0;
PAGFile pagFile;
public void onSurfaceCreated(int cameraTex, int cameraWidth, int cameraHeight) {
pagFile = PAGFile.Load(context.getAssets(), "test.pag");
mWidth = pagFile.width();
mHeight = pagFile.height();
duration = pagFile.duration();
pagFile.replaceImage(1, PAGImage.FromTexture(cameraTex, GLES20.GL_TEXTURE_2D, cameraWidth, cameraHeight));
this.cameraTex = cameraTex;
pngTextureId = initRenderTarget();
PAGSurface pagSurface = PAGSurface.FromTexture(pngTextureId, mWidth, mHeight);
pagPlayer = new PAGPlayer();
pagPlayer.setComposition(pagFile);
pagPlayer.setSurface(pagSurface);
}
public void onSurfaceChanged(GL10 gl, int width, int height) {
Log.d(TAG,"width is " + width + " height is " + height);
viewWidth = width;
viewHeight = height;
}
Camera camera = new Camera();
Matrix transform = new Matrix();
public void onDrawFrame(GL10 gl) {
if (timestamp == 0) {
timestamp = System.currentTimeMillis();
}
pagFile.replaceImage(1, PAGImage.FromTexture(cameraTex, GLES20.GL_TEXTURE_2D, 720, 1280));
GLES20.glViewport(0, 0, viewWidth, viewHeight);
long elapse = System.currentTimeMillis() - timestamp;
long playTime = elapse * 1000;
float rotation = (elapse * 1.0f % 3000L / 3000L) * 360;
camera.save();
camera.rotateX(rotation);
camera.rotateY(rotation);
camera.getMatrix(transform);
camera.restore();
pagFile.getLayerAt(1).setMatrix(transform);
pagPlayer.setProgress(playTime % duration * 1.0f / duration);
pagPlayer.flush();
initShader();
Log.d(TAG,"draw texture id is " + pngTextureId);
GLES20.glUseProgram(mProgram);
GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER,0);
int vPositionLocation = GLES20.glGetAttribLocation(mProgram, "vPosition");
GLES20.glEnableVertexAttribArray(vPositionLocation);
GLES20.glVertexAttribPointer(vPositionLocation, 2, GLES20.GL_FLOAT, false, 4 * 2, VERTEX_BUF);
int vTexCoordLocation = GLES20.glGetAttribLocation(mProgram, "vTexCoord");
GLES20.glEnableVertexAttribArray(vTexCoordLocation);
GLES20.glVertexAttribPointer(vTexCoordLocation, 2, GLES20.GL_FLOAT, false, 4 * 2, TEXTURE_COORD_BUF);
GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, pngTextureId);
GLES20.glClear(GLES20.GL_COLOR_BUFFER_BIT | GLES20.GL_DEPTH_BUFFER_BIT);
GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, 0, 4);
}
private int initRenderTarget() {
int id[] = {0};
GLES20.glGenTextures(1, id, 0);
if (id[0] == 0) {
return 0;
}
int textureId = id[0];
GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, textureId);
GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D, GL10.GL_TEXTURE_MIN_FILTER, GL10.GL_LINEAR);
GLES20.glTexParameterf(GLES20.GL_TEXTURE_2D, GL10.GL_TEXTURE_MAG_FILTER, GL10.GL_LINEAR);
GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GL10.GL_TEXTURE_WRAP_S, GL10.GL_REPEAT);
GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GL10.GL_TEXTURE_WRAP_T, GL10.GL_REPEAT);
GLES20.glTexImage2D(GLES20.GL_TEXTURE_2D, 0,GLES20.GL_RGBA,mWidth,mHeight,0,GLES20.GL_RGBA,GLES20.GL_UNSIGNED_BYTE,null);
GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, 0);
return textureId;
}
}