122 lines
3.3 KiB
C
122 lines
3.3 KiB
C
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/*
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* Copyright (C) 2007 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_OVERLAY_H
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#define ANDROID_OVERLAY_H
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#include <stdint.h>
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#include <sys/types.h>
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#include <utils/Errors.h>
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#include <binder/IInterface.h>
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#include <utils/RefBase.h>
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#include <utils/threads.h>
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#include <ui/PixelFormat.h>
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#include <ui/IOverlay.h>
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#include <hardware/overlay.h>
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namespace android {
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class IMemory;
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class IMemoryHeap;
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// ----------------------------------------------------------------------------
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class OverlayRef : public LightRefBase<OverlayRef>
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{
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public:
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OverlayRef(overlay_handle_t, const sp<IOverlay>&,
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uint32_t w, uint32_t h, int32_t f, uint32_t ws, uint32_t hs);
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static sp<OverlayRef> readFromParcel(const Parcel& data);
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static status_t writeToParcel(Parcel* reply, const sp<OverlayRef>& o);
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private:
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friend class LightRefBase<OverlayRef>;
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friend class Overlay;
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OverlayRef();
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virtual ~OverlayRef();
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overlay_handle_t mOverlayHandle;
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sp<IOverlay> mOverlayChannel;
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uint32_t mWidth;
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uint32_t mHeight;
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int32_t mFormat;
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int32_t mWidthStride;
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int32_t mHeightStride;
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bool mOwnHandle;
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};
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// ----------------------------------------------------------------------------
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class Overlay : public virtual RefBase
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{
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public:
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Overlay(const sp<OverlayRef>& overlayRef);
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/* destroys this overlay */
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void destroy();
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/* get the HAL handle for this overlay */
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overlay_handle_t getHandleRef() const;
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/* blocks until an overlay buffer is available and return that buffer. */
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status_t dequeueBuffer(overlay_buffer_t* buffer);
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/* release the overlay buffer and post it */
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status_t queueBuffer(overlay_buffer_t buffer);
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/* change the width and height of the overlay */
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status_t resizeInput(uint32_t width, uint32_t height);
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status_t setCrop(uint32_t x, uint32_t y, uint32_t w, uint32_t h) ;
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status_t getCrop(uint32_t* x, uint32_t* y, uint32_t* w, uint32_t* h) ;
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/* set the buffer attributes */
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status_t setParameter(int param, int value);
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status_t setFd(int fd);
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/* returns the address of a given buffer if supported, NULL otherwise. */
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void* getBufferAddress(overlay_buffer_t buffer);
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/* get physical informations about the overlay */
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uint32_t getWidth() const;
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uint32_t getHeight() const;
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int32_t getFormat() const;
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int32_t getWidthStride() const;
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int32_t getHeightStride() const;
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int32_t getBufferCount() const;
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status_t getStatus() const;
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private:
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virtual ~Overlay();
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sp<OverlayRef> mOverlayRef;
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overlay_data_device_t *mOverlayData;
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status_t mStatus;
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};
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// ----------------------------------------------------------------------------
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}; // namespace android
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#endif // ANDROID_OVERLAY_H
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