100 lines
2.9 KiB
C++
100 lines
2.9 KiB
C++
/*
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* Copyright 2014 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 SCREENRECORD_FRAMEOUTPUT_H
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#define SCREENRECORD_FRAMEOUTPUT_H
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#include "Program.h"
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#include "EglWindow.h"
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#include <gui/BufferQueue.h>
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#include <gui/GLConsumer.h>
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namespace android {
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/*
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* Support for "frames" output format.
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*/
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class FrameOutput : public GLConsumer::FrameAvailableListener {
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public:
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FrameOutput() : mFrameAvailable(false),
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mExtTextureName(0),
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mPixelBuf(NULL)
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{}
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// Create an "input surface", similar in purpose to a MediaCodec input
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// surface, that the virtual display can send buffers to. Also configures
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// EGL with a pbuffer surface on the current thread.
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status_t createInputSurface(int width, int height,
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sp<IGraphicBufferProducer>* pBufferProducer);
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// Copy one from input to output. If no frame is available, this will wait up to the
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// specified number of microseconds.
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//
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// Returns ETIMEDOUT if the timeout expired before we found a frame.
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status_t copyFrame(FILE* fp, long timeoutUsec, bool rawFrames);
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// Prepare to copy frames. Makes the EGL context used by this object current.
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void prepareToCopy() {
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mEglWindow.makeCurrent();
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}
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private:
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FrameOutput(const FrameOutput&);
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FrameOutput& operator=(const FrameOutput&);
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// Destruction via RefBase.
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virtual ~FrameOutput() {
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delete[] mPixelBuf;
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}
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// (overrides GLConsumer::FrameAvailableListener method)
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virtual void onFrameAvailable(const BufferItem& item);
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// Reduces RGBA to RGB, in place.
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static void reduceRgbaToRgb(uint8_t* buf, unsigned int pixelCount);
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// Put a 32-bit value into a buffer, in little-endian byte order.
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static void setValueLE(uint8_t* buf, uint32_t value);
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// Used to wait for the FrameAvailableListener callback.
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Mutex mMutex;
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Condition mEventCond;
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// Set by the FrameAvailableListener callback.
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bool mFrameAvailable;
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// This receives frames from the virtual display and makes them available
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// as an external texture.
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sp<GLConsumer> mGlConsumer;
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// EGL display / context / surface.
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EglWindow mEglWindow;
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// GL rendering support.
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Program mExtTexProgram;
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// External texture, updated by GLConsumer.
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GLuint mExtTextureName;
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// Pixel data buffer.
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uint8_t* mPixelBuf;
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};
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}; // namespace android
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#endif /*SCREENRECORD_FRAMEOUTPUT_H*/
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