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_CALLBACKPROCESSOR_H
18#define ANDROID_SERVERS_CAMERA_CAMERA2_CALLBACKPROCESSOR_H
19
20#include <utils/Thread.h>
21#include <utils/String16.h>
22#include <utils/Vector.h>
23#include <utils/Mutex.h>
24#include <utils/Condition.h>
25#include <gui/CpuConsumer.h>
26#include "Parameters.h"
27#include "camera/CameraMetadata.h"
28#include "Camera2Heap.h"
29
30namespace android {
31
32class Camera2Client;
33class CameraDeviceBase;
34
35namespace camera2 {
36
37/***
38 * Still image capture output image processing
39 */
40class CallbackProcessor:
41            public Thread, public CpuConsumer::FrameAvailableListener {
42  public:
43    CallbackProcessor(sp<Camera2Client> client);
44    ~CallbackProcessor();
45
46    void onFrameAvailable();
47
48    status_t updateStream(const Parameters &params);
49    status_t deleteStream();
50    int getStreamId() const;
51
52    void dump(int fd, const Vector<String16>& args) const;
53  private:
54    static const nsecs_t kWaitDuration = 10000000; // 10 ms
55    wp<Camera2Client> mClient;
56    wp<CameraDeviceBase> mDevice;
57    int mId;
58
59    mutable Mutex mInputMutex;
60    bool mCallbackAvailable;
61    Condition mCallbackAvailableSignal;
62
63    enum {
64        NO_STREAM = -1
65    };
66
67    int mCallbackStreamId;
68    static const size_t kCallbackHeapCount = 6;
69    sp<CpuConsumer>    mCallbackConsumer;
70    sp<ANativeWindow>  mCallbackWindow;
71    sp<Camera2Heap>    mCallbackHeap;
72    int mCallbackHeapId;
73    size_t mCallbackHeapHead, mCallbackHeapFree;
74
75    virtual bool threadLoop();
76
77    status_t processNewCallback(sp<Camera2Client> &client);
78    // Used when shutting down
79    status_t discardNewCallback();
80
81    // Convert from flexible YUV to NV21 or YV12
82    status_t convertFromFlexibleYuv(int32_t previewFormat,
83            uint8_t *dst,
84            const CpuConsumer::LockedBuffer &src,
85            uint32_t dstYStride,
86            uint32_t dstCStride) const;
87};
88
89
90}; //namespace camera2
91}; //namespace android
92
93#endif
94