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;
27class Layer;
28
29// MonitoredProducer wraps an IGraphicBufferProducer so that SurfaceFlinger will
30// be notified upon its destruction
31class MonitoredProducer : public BnGraphicBufferProducer {
32public:
33    MonitoredProducer(const sp<IGraphicBufferProducer>& producer,
34            const sp<SurfaceFlinger>& flinger,
35            const wp<Layer>& layer);
36    virtual ~MonitoredProducer();
37
38    // From IGraphicBufferProducer
39    virtual status_t requestBuffer(int slot, sp<GraphicBuffer>* buf);
40    virtual status_t setMaxDequeuedBufferCount(int maxDequeuedBuffers);
41    virtual status_t setAsyncMode(bool async);
42    virtual status_t dequeueBuffer(int* slot, sp<Fence>* fence, uint32_t w,
43            uint32_t h, PixelFormat format, uint32_t usage,
44            FrameEventHistoryDelta* outTimestamps);
45    virtual status_t detachBuffer(int slot);
46    virtual status_t detachNextBuffer(sp<GraphicBuffer>* outBuffer,
47            sp<Fence>* outFence);
48    virtual status_t attachBuffer(int* outSlot,
49            const sp<GraphicBuffer>& buffer);
50    virtual status_t queueBuffer(int slot, const QueueBufferInput& input,
51            QueueBufferOutput* output);
52    virtual status_t cancelBuffer(int slot, const sp<Fence>& fence);
53    virtual int query(int what, int* value);
54    virtual status_t connect(const sp<IProducerListener>& token, int api,
55            bool producerControlledByApp, QueueBufferOutput* output);
56    virtual status_t disconnect(int api, DisconnectMode mode);
57    virtual status_t setSidebandStream(const sp<NativeHandle>& stream);
58    virtual void allocateBuffers(uint32_t width, uint32_t height,
59            PixelFormat format, uint32_t usage);
60    virtual status_t allowAllocation(bool allow);
61    virtual status_t setGenerationNumber(uint32_t generationNumber);
62    virtual String8 getConsumerName() const override;
63    virtual status_t setDequeueTimeout(nsecs_t timeout) override;
64    virtual status_t getLastQueuedBuffer(sp<GraphicBuffer>* outBuffer,
65            sp<Fence>* outFence, float outTransformMatrix[16]) override;
66    virtual IBinder* onAsBinder();
67    virtual status_t setSharedBufferMode(bool sharedBufferMode) override;
68    virtual status_t setAutoRefresh(bool autoRefresh) override;
69    virtual void getFrameTimestamps(FrameEventHistoryDelta *outDelta) override;
70    virtual status_t getUniqueId(uint64_t* outId) const override;
71
72    // The Layer which created this producer, and on which queued Buffer's will be displayed.
73    sp<Layer> getLayer() const;
74
75private:
76    sp<IGraphicBufferProducer> mProducer;
77    sp<SurfaceFlinger> mFlinger;
78    // The Layer which created this producer, and on which queued Buffer's will be displayed.
79    wp<Layer> mLayer;
80};
81
82}; // namespace android
83
84#endif // ANDROID_MONITORED_PRODUCER_H
85