aa6c24c21c
Bug #4343984 TextureView can be used to render media content (video, OpenGL, RenderScript) inside a View. The key difference with SurfaceView is that TextureView does not create a new Surface. This gives the ability to seamlessly transform, animate, fade, etc. a TextureView, which was hard if not impossible to do with a SurfaceView. A TextureView also interacts perfectly with ScrollView, ListView, etc. It allows application to embed media content in a much more flexible way than before. For instance, to render the camera preview at 50% opacity, all you need to do is the following: mTextureView.setAlpha(0.5f); Camera c = Camera.open(); c.setPreviewTexture(mTextureView.getSurfaceTexture()); c.startPreview(); TextureView uses a SurfaceTexture to get the job done. More APIs are required to make it easy to create OpenGL contexts for a TextureView. It can currently be done with a bit of JNI code. Change-Id: Iaa7953097ab5beb8437bcbbfa03b2df5b7f80cd7
74 lines
2.1 KiB
C++
74 lines
2.1 KiB
C++
/*
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* Copyright (C) 2011 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_HWUI_LAYER_RENDERER_H
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#define ANDROID_HWUI_LAYER_RENDERER_H
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#include "OpenGLRenderer.h"
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#include "Layer.h"
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namespace android {
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namespace uirenderer {
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///////////////////////////////////////////////////////////////////////////////
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// Defines
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///////////////////////////////////////////////////////////////////////////////
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// Debug
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#if DEBUG_LAYER_RENDERER
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#define LAYER_RENDERER_LOGD(...) LOGD(__VA_ARGS__)
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#else
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#define LAYER_RENDERER_LOGD(...)
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#endif
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///////////////////////////////////////////////////////////////////////////////
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// Renderer
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///////////////////////////////////////////////////////////////////////////////
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class LayerRenderer: public OpenGLRenderer {
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public:
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LayerRenderer(Layer* layer): mLayer(layer) {
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}
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~LayerRenderer() {
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}
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void prepareDirty(float left, float top, float right, float bottom, bool opaque);
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void finish();
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bool hasLayer();
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Region* getRegion();
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GLint getTargetFbo();
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static Layer* createTextureLayer();
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static Layer* createLayer(uint32_t width, uint32_t height, bool isOpaque = false);
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static bool resizeLayer(Layer* layer, uint32_t width, uint32_t height);
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static void updateTextureLayer(Layer* layer, uint32_t width, uint32_t height,
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float* transform);
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static void destroyLayer(Layer* layer);
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static void destroyLayerDeferred(Layer* layer);
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private:
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void generateMesh();
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Layer* mLayer;
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}; // class LayerRenderer
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}; // namespace uirenderer
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}; // namespace android
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#endif // ANDROID_HWUI_LAYER_RENDERER_H
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