MonitoredProducer.h revision 9de7293b0a1b01ebe6fb1ab4a498f144adc8029f 
1/*
2 * Copyright 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef ANDROID_MONITORED_PRODUCER_H
18#define ANDROID_MONITORED_PRODUCER_H
19
20#include <gui/IGraphicBufferProducer.h>
21
22namespace android {
23
24class IProducerListener;
25class NativeHandle;
26class SurfaceFlinger;
27
28// MonitoredProducer wraps an IGraphicBufferProducer so that SurfaceFlinger will
29// be notified upon its destruction
30class MonitoredProducer : public IGraphicBufferProducer {
31public:
32    MonitoredProducer(const sp<IGraphicBufferProducer>& producer,
33            const sp<SurfaceFlinger>& flinger);
34    virtual ~MonitoredProducer();
35
36    // From IGraphicBufferProducer
37    virtual status_t requestBuffer(int slot, sp<GraphicBuffer>* buf);
38    virtual status_t setBufferCount(int bufferCount);
39    virtual status_t dequeueBuffer(int* slot, sp<Fence>* fence, bool async,
40            uint32_t w, uint32_t h, PixelFormat format, uint32_t usage);
41    virtual status_t detachBuffer(int slot);
42    virtual status_t detachNextBuffer(sp<GraphicBuffer>* outBuffer,
43            sp<Fence>* outFence);
44    virtual status_t attachBuffer(int* outSlot,
45            const sp<GraphicBuffer>& buffer);
46    virtual status_t queueBuffer(int slot, const QueueBufferInput& input,
47            QueueBufferOutput* output);
48    virtual void cancelBuffer(int slot, const sp<Fence>& fence);
49    virtual int query(int what, int* value);
50    virtual status_t connect(const sp<IProducerListener>& token, int api,
51            bool producerControlledByApp, QueueBufferOutput* output);
52    virtual status_t disconnect(int api);
53    virtual status_t setSidebandStream(const sp<NativeHandle>& stream);
54    virtual void allocateBuffers(bool async, uint32_t width, uint32_t height,
55            PixelFormat format, uint32_t usage);
56    virtual status_t allowAllocation(bool allow);
57    virtual IBinder* onAsBinder();
58
59private:
60    sp<IGraphicBufferProducer> mProducer;
61    sp<SurfaceFlinger> mFlinger;
62};
63
64}; // namespace android
65
66#endif // ANDROID_MONITORED_PRODUCER_H
67