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/*
* Copyright (C) 2010 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_GUI_SURFACETEXTURECLIENT_H
#define ANDROID_GUI_SURFACETEXTURECLIENT_H
#include <gui/ISurfaceTexture.h>
#include <gui/SurfaceTexture.h>
#include <ui/egl/android_natives.h>
#include <utils/RefBase.h>
#include <utils/threads.h>
namespace android {
class Surface;
class SurfaceTextureClient
: public EGLNativeBase<ANativeWindow, SurfaceTextureClient, RefBase>
{
public:
SurfaceTextureClient(const sp<ISurfaceTexture>& surfaceTexture);
sp<ISurfaceTexture> getISurfaceTexture() const;
private:
friend class Surface;
// can't be copied
SurfaceTextureClient& operator = (const SurfaceTextureClient& rhs);
SurfaceTextureClient(const SurfaceTextureClient& rhs);
// ANativeWindow hooks
static int cancelBuffer(ANativeWindow* window, ANativeWindowBuffer* buffer);
static int dequeueBuffer(ANativeWindow* window, ANativeWindowBuffer** buffer);
static int lockBuffer(ANativeWindow* window, ANativeWindowBuffer* buffer);
static int perform(ANativeWindow* window, int operation, ...);
static int query(const ANativeWindow* window, int what, int* value);
static int queueBuffer(ANativeWindow* window, ANativeWindowBuffer* buffer);
static int setSwapInterval(ANativeWindow* window, int interval);
int cancelBuffer(ANativeWindowBuffer* buffer);
int dequeueBuffer(ANativeWindowBuffer** buffer);
int lockBuffer(ANativeWindowBuffer* buffer);
int perform(int operation, va_list args);
int query(int what, int* value) const;
int queueBuffer(ANativeWindowBuffer* buffer);
int setSwapInterval(int interval);
int dispatchConnect(va_list args);
int dispatchDisconnect(va_list args);
int dispatchSetBufferCount(va_list args);
int dispatchSetBuffersGeometry(va_list args);
int dispatchSetBuffersTransform(va_list args);
int dispatchSetBuffersTimestamp(va_list args);
int dispatchSetCrop(va_list args);
int dispatchSetUsage(va_list args);
int connect(int api);
int disconnect(int api);
int setBufferCount(int bufferCount);
int setBuffersGeometry(int w, int h, int format);
int setBuffersTransform(int transform);
int setBuffersTimestamp(int64_t timestamp);
int setCrop(Rect const* rect);
int setUsage(uint32_t reqUsage);
void freeAllBuffers();
int getSlotFromBufferLocked(android_native_buffer_t* buffer) const;
int getConnectedApi() const;
enum { MIN_UNDEQUEUED_BUFFERS = SurfaceTexture::MIN_UNDEQUEUED_BUFFERS };
enum { NUM_BUFFER_SLOTS = SurfaceTexture::NUM_BUFFER_SLOTS };
enum { DEFAULT_FORMAT = PIXEL_FORMAT_RGBA_8888 };
// mSurfaceTexture is the interface to the surface texture server. All
// operations on the surface texture client ultimately translate into
// interactions with the server using this interface.
sp<ISurfaceTexture> mSurfaceTexture;
// mAllocator is the binder object that is referenced to prevent the
// dequeued buffers from being freed prematurely.
sp<IBinder> mAllocator;
// mSlots stores the buffers that have been allocated for each buffer slot.
// It is initialized to null pointers, and gets filled in with the result of
// ISurfaceTexture::requestBuffer when the client dequeues a buffer from a
// slot that has not yet been used. The buffer allocated to a slot will also
// be replaced if the requested buffer usage or geometry differs from that
// of the buffer allocated to a slot.
sp<GraphicBuffer> mSlots[NUM_BUFFER_SLOTS];
// mReqWidth is the buffer width that will be requested at the next dequeue
// operation. It is initialized to 1.
uint32_t mReqWidth;
// mReqHeight is the buffer height that will be requested at the next deuque
// operation. It is initialized to 1.
uint32_t mReqHeight;
// mReqFormat is the buffer pixel format that will be requested at the next
// deuque operation. It is initialized to PIXEL_FORMAT_RGBA_8888.
uint32_t mReqFormat;
// mReqUsage is the set of buffer usage flags that will be requested
// at the next deuque operation. It is initialized to 0.
uint32_t mReqUsage;
// mTimestamp is the timestamp that will be used for the next buffer queue
// operation. It defaults to NATIVE_WINDOW_TIMESTAMP_AUTO, which means that
// a timestamp is auto-generated when queueBuffer is called.
int64_t mTimestamp;
// mConnectedApi holds the currently connected API to this surface
int mConnectedApi;
// mQueryWidth is the width returned by query(). It is set to width
// of the last dequeued buffer or to mReqWidth if no buffer was dequeued.
uint32_t mQueryWidth;
// mQueryHeight is the height returned by query(). It is set to height
// of the last dequeued buffer or to mReqHeight if no buffer was dequeued.
uint32_t mQueryHeight;
// mQueryFormat is the format returned by query(). It is set to the last
// dequeued format or to mReqFormat if no buffer was dequeued.
uint32_t mQueryFormat;
// mMutex is the mutex used to prevent concurrent access to the member
// variables of SurfaceTexture objects. It must be locked whenever the
// member variables are accessed.
mutable Mutex mMutex;
};
}; // namespace android
#endif // ANDROID_GUI_SURFACETEXTURECLIENT_H
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