增加水印效果 (2017-09-29)

app/src/main/java/com/example/gsyvideoplayer/DetailFilterActivity.java

@@ -138,7 +138,7 @@ public class DetailFilterActivity extends GSYBaseActivityDetail {
 
         Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.unlock);
         //自定义render需要在播放器设置
-        detailPlayer.setCustomGLRenderer(new GSYVideoGLViewCustomRender(bitmap, dp2px(96), dp2px(128), 0.6f));
+        detailPlayer.setCustomGLRenderer(new GSYVideoGLViewCustomRender(bitmap, dp2px(32), dp2px(43), 0.6f));
 
         changeFilter.setOnClickListener(new View.OnClickListener() {
             @Override

app/src/main/java/com/example/gsyvideoplayer/effect/BitmapIconEffect.java

@@ -12,6 +12,8 @@ import com.shuyu.gsyvideoplayer.GSYVideoGLView.ShaderInterface;
 public class BitmapIconEffect implements ShaderInterface {
 
 
+    private GLSurfaceView mGlSurfaceViewl;
+
     private Bitmap mBitmap;
 
     private int mWidth = -1;
@@ -20,6 +22,8 @@ public class BitmapIconEffect implements ShaderInterface {
 
     private float mAlpha = 1.0f;
 
+    private float mPositionOffset = 1.0f;
+
     public BitmapIconEffect(Bitmap bitmap) {
         this(bitmap, bitmap.getWidth(), bitmap.getHeight());
     }
@@ -37,6 +41,7 @@ public class BitmapIconEffect implements ShaderInterface {
 
     @Override
     public String getShader(GLSurfaceView mGlSurfaceView) {
+        this.mGlSurfaceViewl = mGlSurfaceView;
         String shader =
                 "#extension GL_OES_EGL_image_external : require\n"
                         + "precision mediump float;\n"
@@ -59,6 +64,34 @@ public class BitmapIconEffect implements ShaderInterface {
         return (float) mHeight;
     }
 
+    /**
+     * 水印图的默认比例
+     */
+    public float getScaleW() {
+        return getWidth() / mGlSurfaceViewl.getWidth();
+    }
+
+    /**
+     * 水印图的默认比例
+     */
+    public float getScaleH() {
+        return getHeight() / mGlSurfaceViewl.getHeight();
+    }
+
+    /**
+     * 水印图的起始位置，默认右边
+     */
+    public float getPositionX() {
+        return -(mGlSurfaceViewl.getWidth() / (getWidth()) - mPositionOffset);
+    }
+
+    /**
+     * 水印图的起始位置，默认上
+     */
+    public float getPositionY() {
+        return -(mGlSurfaceViewl.getHeight() / (getHeight()) - mPositionOffset);
+    }
+
     public Bitmap getBitmap() {
         return mBitmap;
     }

app/src/main/java/com/example/gsyvideoplayer/effect/GSYVideoGLViewCustomRender.java

@@ -4,6 +4,7 @@ import android.annotation.SuppressLint;
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
 import android.opengl.GLES20;
+import android.opengl.GLU;
 import android.opengl.GLUtils;
 import android.opengl.Matrix;
 
@@ -35,13 +36,11 @@ public class GSYVideoGLViewCustomRender extends GSYVideoGLViewSimpleRender {
 
     private final float[] mTriangleVerticesData = {
             // X, Y, Z, U, V
-            -1.0f, -1.0f, 0.0f,
-            0.0f, 0.0f, 1.0f,
-            -1.0f, 0.0f, 1.0f,
-            0.0f, -1.0f, 1.0f,
-            0.0f, 0.0f, 1.0f,
-            1.0f, 1.0f, 0.0f,
-            1.0f, 1.0f,};
+            -1.0f, -1.0f, 0.0f, 0.0f,
+            0.0f, 1.0f, -1.0f, 0.0f,
+            1.0f, 0.0f, -1.0f, 1.0f,
+            0.0f, 0.0f, 1.0f, 1.0f,
+            1.0f, 0.0f, 1.0f, 1.0f,};
 
     private float[] mMVPMatrix = new float[16];
 
@@ -140,8 +139,9 @@ public class GSYVideoGLViewCustomRender extends GSYVideoGLViewSimpleRender {
         //旋转到正常角度
         Matrix.setRotateM(mMVPMatrix, 0, 180f, 0.0f, 0, 1.0f);
         //调整大小比例
-        Matrix.scaleM(mMVPMatrix, 0, mBitmapEffect.getWidth() / mSurfaceView.getWidth(), mBitmapEffect.getHeight() / mSurfaceView.getWidth(), 1);
-
+        Matrix.scaleM(mMVPMatrix, 0, mBitmapEffect.getScaleW(), mBitmapEffect.getScaleH(), 1);
+        //调整位置
+        Matrix.translateM(mMVPMatrix, 0, mBitmapEffect.getPositionX(), mBitmapEffect.getPositionY(), 0f);
     }
 
     @Override