2009-03-04 03:31:44 +00:00
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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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2010-02-10 01:46:37 +00:00
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#ifndef ANDROID_SF_ISURFACE_H
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#define ANDROID_SF_ISURFACE_H
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2009-03-04 03:31:44 +00:00
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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 <utils/RefBase.h>
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2010-02-10 01:46:37 +00:00
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#include <binder/IInterface.h>
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2009-03-04 03:31:44 +00:00
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#include <ui/PixelFormat.h>
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#include <hardware/hardware.h>
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2009-04-10 21:24:30 +00:00
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#include <hardware/gralloc.h>
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2009-03-04 03:31:44 +00:00
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namespace android {
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typedef int32_t SurfaceID;
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2009-10-06 00:07:12 +00:00
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class GraphicBuffer;
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2009-03-04 03:31:44 +00:00
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class ISurface : public IInterface
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{
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protected:
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enum {
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2010-12-08 03:38:17 +00:00
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RESERVED0 = IBinder::FIRST_CALL_TRANSACTION,
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RESERVED1,
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RESERVED2,
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fix [2068105] implement queueBuffer/lockBuffer/dequeueBuffer properly
Rewrote SurfaceFlinger's buffer management from the ground-up.
The design now support an arbitrary number of buffers per surface, however the current implementation is limited to four. Currently only 2 buffers are used in practice.
The main new feature is to be able to dequeue all buffers at once (very important when there are only two).
A client can dequeue all buffers until there are none available, it can lock all buffers except the last one that is used for composition. The client will block then, until a new buffer is enqueued.
The current implementation requires that buffers are locked in the same order they are dequeued and enqueued in the same order they are locked. Only one buffer can be locked at a time.
eg. Allowed sequence: DQ, DQ, LOCK, Q, LOCK, Q
eg. Forbidden sequence: DQ, DQ, LOCK, LOCK, Q, Q
2009-09-07 23:32:45 +00:00
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REQUEST_BUFFER,
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2010-05-07 22:58:44 +00:00
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SET_BUFFER_COUNT,
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2009-03-04 03:31:44 +00:00
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};
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public:
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DECLARE_META_INTERFACE(Surface);
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2010-05-28 21:22:23 +00:00
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/*
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* requests a new buffer for the given index. If w, h, or format are
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* null the buffer is created with the parameters assigned to the
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* surface it is bound to. Otherwise the buffer's parameters are
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* set to those specified.
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*/
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2010-05-22 00:24:35 +00:00
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virtual sp<GraphicBuffer> requestBuffer(int bufferIdx,
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uint32_t w, uint32_t h, uint32_t format, uint32_t usage) = 0;
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2010-05-28 21:22:23 +00:00
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/*
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* sets the number of buffers dequeuable for this surface.
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*/
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2010-05-07 22:58:44 +00:00
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virtual status_t setBufferCount(int bufferCount) = 0;
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2009-03-04 03:31:44 +00:00
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};
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// ----------------------------------------------------------------------------
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class BnSurface : public BnInterface<ISurface>
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{
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public:
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virtual status_t onTransact( uint32_t code,
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const Parcel& data,
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Parcel* reply,
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uint32_t flags = 0);
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};
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// ----------------------------------------------------------------------------
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}; // namespace android
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2010-02-10 01:46:37 +00:00
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#endif // ANDROID_SF_ISURFACE_H
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