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      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 
     26 namespace android {
     27 
     28 class Camera2Client;
     29 class CameraDeviceBase;
     30 class IMemory;
     31 
     32 namespace camera2 {
     33 
     34 struct Parameters;
     35 class Camera2Heap;
     36 
     37 /**
     38  * Management and processing for preview and recording streams
     39  */
     40 class 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