1/*
2 * Copyright (C) 2012 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_SERVERS_CAMERA_CAMERA2_STREAMINGPROCESSOR_H
18#define ANDROID_SERVERS_CAMERA_CAMERA2_STREAMINGPROCESSOR_H
19
20#include <utils/Mutex.h>
21#include <utils/String16.h>
22#include <gui/BufferItemConsumer.h>
23
24#include "camera/CameraMetadata.h"
25
26namespace android {
27
28class Camera2Client;
29class CameraDeviceBase;
30class IMemory;
31
32namespace camera2 {
33
34struct Parameters;
35class Camera2Heap;
36
37/**
38 * Management and processing for preview and recording streams
39 */
40class StreamingProcessor : public virtual VirtualLightRefBase {
41  public:
42    StreamingProcessor(sp<Camera2Client> client);
43    ~StreamingProcessor();
44
45    status_t setPreviewWindow(sp<Surface> window);
46    status_t setRecordingWindow(sp<Surface> window);
47
48    bool haveValidPreviewWindow() const;
49    bool haveValidRecordingWindow() const;
50
51    status_t updatePreviewRequest(const Parameters &params);
52    status_t updatePreviewStream(const Parameters &params);
53    status_t deletePreviewStream();
54    int getPreviewStreamId() const;
55
56    status_t updateRecordingRequest(const Parameters &params);
57    // If needsUpdate is set to true, a updateRecordingStream call with params will recreate
58    // recording stream
59    status_t recordingStreamNeedsUpdate(const Parameters &params, bool *needsUpdate);
60    status_t updateRecordingStream(const Parameters &params);
61    status_t deleteRecordingStream();
62    int getRecordingStreamId() const;
63
64    enum StreamType {
65        NONE,
66        PREVIEW,
67        RECORD
68    };
69    status_t startStream(StreamType type,
70            const Vector<int32_t> &outputStreams);
71
72    // Toggle between paused and unpaused. Stream must be started first.
73    status_t togglePauseStream(bool pause);
74
75    status_t stopStream();
76
77    // Returns the request ID for the currently streaming request
78    // Returns 0 if there is no active request.
79    status_t getActiveRequestId() const;
80    status_t incrementStreamingIds();
81
82    status_t dump(int fd, const Vector<String16>& args);
83
84  private:
85    mutable Mutex mMutex;
86
87    enum {
88        NO_STREAM = -1
89    };
90
91    wp<Camera2Client> mClient;
92    wp<CameraDeviceBase> mDevice;
93    int mId;
94
95    StreamType mActiveRequest;
96    bool mPaused;
97
98    Vector<int32_t> mActiveStreamIds;
99
100    // Preview-related members
101    int32_t mPreviewRequestId;
102    int mPreviewStreamId;
103    CameraMetadata mPreviewRequest;
104    sp<Surface> mPreviewWindow;
105
106    int32_t mRecordingRequestId;
107    int mRecordingStreamId;
108    sp<Surface>  mRecordingWindow;
109    CameraMetadata mRecordingRequest;
110};
111
112
113}; // namespace camera2
114}; // namespace android
115
116#endif
117