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/*
* Copyright (C) 2007 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.
*/
#ifndef ANDROID_DISPLAY_HARDWARE_H
#define ANDROID_DISPLAY_HARDWARE_H
#include <stdlib.h>
#include <ui/PixelFormat.h>
#include <ui/Region.h>
#include <GLES/gl.h>
#include <GLES/glext.h>
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <pixelflinger/pixelflinger.h>
#include "GLExtensions.h"
#include "DisplayHardware/DisplayHardwareBase.h"
#include "DisplayHardware/VSyncBarrier.h"
namespace android {
class FramebufferNativeWindow;
class HWComposer;
class DisplayHardware : public DisplayHardwareBase
{
public:
enum {
COPY_BITS_EXTENSION = 0x00000008,
BUFFER_PRESERVED = 0x00010000,
PARTIAL_UPDATES = 0x00020000, // video driver feature
SLOW_CONFIG = 0x00040000, // software
SWAP_RECTANGLE = 0x00080000,
};
DisplayHardware(
const sp<SurfaceFlinger>& flinger,
uint32_t displayIndex);
~DisplayHardware();
void releaseScreen() const;
void acquireScreen() const;
// Flip the front and back buffers if the back buffer is "dirty". Might
// be instantaneous, might involve copying the frame buffer around.
void flip(const Region& dirty) const;
float getDpiX() const;
float getDpiY() const;
float getRefreshRate() const;
float getDensity() const;
int getWidth() const;
int getHeight() const;
PixelFormat getFormat() const;
uint32_t getFlags() const;
void makeCurrent() const;
uint32_t getMaxTextureSize() const;
uint32_t getMaxViewportDims() const;
// waits for the next vsync and returns the timestamp of when it happened
nsecs_t waitForVSync() const;
uint32_t getPageFlipCount() const;
EGLDisplay getEGLDisplay() const { return mDisplay; }
void dump(String8& res) const;
// Hardware Composer
HWComposer& getHwComposer() const;
status_t compositionComplete() const;
Rect getBounds() const {
return Rect(mWidth, mHeight);
}
inline Rect bounds() const { return getBounds(); }
// only for debugging
int getCurrentBufferIndex() const;
private:
void init(uint32_t displayIndex) __attribute__((noinline));
void fini() __attribute__((noinline));
int32_t getDelayToNextVSyncUs(nsecs_t* timestamp) const;
sp<SurfaceFlinger> mFlinger;
EGLDisplay mDisplay;
EGLSurface mSurface;
EGLContext mContext;
EGLConfig mConfig;
float mDpiX;
float mDpiY;
float mRefreshRate;
float mDensity;
int mWidth;
int mHeight;
PixelFormat mFormat;
uint32_t mFlags;
mutable uint32_t mPageFlipCount;
GLint mMaxViewportDims[2];
GLint mMaxTextureSize;
VSyncBarrier mVSync;
mutable Mutex mFakeVSyncMutex;
mutable nsecs_t mNextFakeVSync;
nsecs_t mRefreshPeriod;
HWComposer* mHwc;
sp<FramebufferNativeWindow> mNativeWindow;
};
}; // namespace android
#endif // ANDROID_DISPLAY_HARDWARE_H
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