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Merge pull request Doikki#789 from Doikki/dev
接入GLSurfaceView，实现视频加水印功能
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34
dkplayer-sample/src/main/assets/bitmap_overlay_video_processor_fragment.glsl
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| // Copyright 2020 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. | ||
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| #extension GL_OES_EGL_image_external : require | ||
| precision mediump float; | ||
| // External texture containing video decoder output. | ||
| uniform samplerExternalOES uTexSampler0; | ||
| // Texture containing the overlap bitmap. | ||
| uniform sampler2D uTexSampler1; | ||
| // Horizontal scaling factor for the overlap bitmap. | ||
| uniform float uScaleX; | ||
| // Vertical scaling factory for the overlap bitmap. | ||
| uniform float uScaleY; | ||
| varying vec2 vTexCoords; | ||
| void main() { | ||
| vec4 videoColor = texture2D(uTexSampler0, vTexCoords); | ||
| vec4 overlayColor = texture2D(uTexSampler1, | ||
| vec2(vTexCoords.x * uScaleX, | ||
| vTexCoords.y * uScaleY)); | ||
| // Blend the video decoder output and the overlay bitmap. | ||
| gl_FragColor = videoColor * (1.0 - overlayColor.a) | ||
| + overlayColor * overlayColor.a; | ||
| } |
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dkplayer-sample/src/main/assets/bitmap_overlay_video_processor_vertex.glsl
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| // Copyright 2020 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. | ||
| attribute vec4 aFramePosition; | ||
| attribute vec4 aTexCoords; | ||
| uniform mat4 uTexTransform; | ||
| varying vec2 vTexCoords; | ||
| void main() { | ||
| gl_Position = aFramePosition; | ||
| vTexCoords = (uTexTransform * aTexCoords).xy; | ||
| } |
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142 changes: 142 additions & 0 deletions
142
...ample/src/main/java/xyz/doikki/dkplayer/widget/render/gl/BitmapOverlayVideoProcessor.java
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| /* | ||
| * Copyright (C) 2020 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 xyz.doikki.dkplayer.widget.render.gl; | ||
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| import static com.google.android.exoplayer2.util.Assertions.checkNotNull; | ||
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| import android.content.Context; | ||
| import android.content.pm.PackageManager; | ||
| import android.graphics.Bitmap; | ||
| import android.graphics.Canvas; | ||
| import android.graphics.Color; | ||
| import android.graphics.Paint; | ||
| import android.graphics.drawable.BitmapDrawable; | ||
| import android.opengl.GLES20; | ||
| import android.opengl.GLUtils; | ||
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| import com.google.android.exoplayer2.util.GlProgram; | ||
| import com.google.android.exoplayer2.util.GlUtil; | ||
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| import java.io.IOException; | ||
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| import javax.microedition.khronos.opengles.GL10; | ||
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| /** | ||
| * Video processor that demonstrates how to overlay a bitmap on video output using a GL shader. The | ||
| * bitmap is drawn using an Android {@link Canvas}. | ||
| */ | ||
| /* package */ final class BitmapOverlayVideoProcessor implements GLSurfaceRenderView.VideoProcessor { | ||
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| private static final int OVERLAY_WIDTH = 512; | ||
| private static final int OVERLAY_HEIGHT = 256; | ||
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| private final Context context; | ||
| private final Paint paint; | ||
| private final int[] textures; | ||
| private final Bitmap overlayBitmap; | ||
| private final Bitmap logoBitmap; | ||
| private final Canvas overlayCanvas; | ||
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| private GlProgram program; | ||
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| private float bitmapScaleX; | ||
| private float bitmapScaleY; | ||
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| public BitmapOverlayVideoProcessor(Context context) { | ||
| this.context = context.getApplicationContext(); | ||
| paint = new Paint(); | ||
| paint.setTextSize(64); | ||
| paint.setAntiAlias(true); | ||
| paint.setARGB(0xFF, 0xFF, 0x00, 0x00); | ||
| textures = new int[1]; | ||
| overlayBitmap = Bitmap.createBitmap(OVERLAY_WIDTH, OVERLAY_HEIGHT, Bitmap.Config.ARGB_8888); | ||
| overlayCanvas = new Canvas(overlayBitmap); | ||
| try { | ||
| logoBitmap = | ||
| ((BitmapDrawable) | ||
| context.getPackageManager().getApplicationIcon(context.getPackageName())) | ||
| .getBitmap(); | ||
| } catch (PackageManager.NameNotFoundException e) { | ||
| throw new IllegalStateException(e); | ||
| } | ||
| } | ||
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| @Override | ||
| public void initialize() { | ||
| try { | ||
| program = | ||
| new GlProgram( | ||
| context, | ||
| /* vertexShaderFilePath= */ "bitmap_overlay_video_processor_vertex.glsl", | ||
| /* fragmentShaderFilePath= */ "bitmap_overlay_video_processor_fragment.glsl"); | ||
| } catch (IOException e) { | ||
| throw new IllegalStateException(e); | ||
| } | ||
| program.setBufferAttribute( | ||
| "aFramePosition", | ||
| GlUtil.getNormalizedCoordinateBounds(), | ||
| GlUtil.HOMOGENEOUS_COORDINATE_VECTOR_SIZE); | ||
| program.setBufferAttribute( | ||
| "aTexCoords", | ||
| GlUtil.getTextureCoordinateBounds(), | ||
| GlUtil.HOMOGENEOUS_COORDINATE_VECTOR_SIZE); | ||
| GLES20.glGenTextures(1, textures, 0); | ||
| GLES20.glBindTexture(GL10.GL_TEXTURE_2D, textures[0]); | ||
| GLES20.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MIN_FILTER, GL10.GL_NEAREST); | ||
| GLES20.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MAG_FILTER, GL10.GL_LINEAR); | ||
| GLES20.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_WRAP_S, GL10.GL_REPEAT); | ||
| GLES20.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_WRAP_T, GL10.GL_REPEAT); | ||
| GLUtils.texImage2D(GL10.GL_TEXTURE_2D, /* level= */ 0, overlayBitmap, /* border= */ 0); | ||
| } | ||
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| @Override | ||
| public void setSurfaceSize(int width, int height) { | ||
| bitmapScaleX = (float) width / OVERLAY_WIDTH; | ||
| bitmapScaleY = (float) height / OVERLAY_HEIGHT; | ||
| } | ||
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| @Override | ||
| public void draw(int frameTexture, float[] transformMatrix) { | ||
| // Draw to the canvas and store it in a texture. | ||
| String text = "视频水印"; | ||
| overlayBitmap.eraseColor(Color.TRANSPARENT); | ||
| overlayCanvas.drawBitmap(logoBitmap, /* left= */ 32, /* top= */ 32, paint); | ||
| overlayCanvas.drawText(text, /* x= */ 200, /* y= */ 130, paint); | ||
| GLES20.glBindTexture(GL10.GL_TEXTURE_2D, textures[0]); | ||
| GLUtils.texSubImage2D( | ||
| GL10.GL_TEXTURE_2D, /* level= */ 0, /* xoffset= */ 0, /* yoffset= */ 0, overlayBitmap); | ||
| GlUtil.checkGlError(); | ||
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| // Run the shader program. | ||
| GlProgram program = checkNotNull(this.program); | ||
| program.setSamplerTexIdUniform("uTexSampler0", frameTexture, /* texUnitIndex= */ 0); | ||
| program.setSamplerTexIdUniform("uTexSampler1", textures[0], /* texUnitIndex= */ 1); | ||
| program.setFloatUniform("uScaleX", bitmapScaleX); | ||
| program.setFloatUniform("uScaleY", bitmapScaleY); | ||
| program.setFloatsUniform("uTexTransform", transformMatrix); | ||
| program.bindAttributesAndUniforms(); | ||
| GLES20.glClear(GLES20.GL_COLOR_BUFFER_BIT); | ||
| GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, /* first= */ 0, /* count= */ 4); | ||
| GlUtil.checkGlError(); | ||
| } | ||
|
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| @Override | ||
| public void release() { | ||
| if (program != null) { | ||
| program.delete(); | ||
| } | ||
| } | ||
| } |
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