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      1 /*
      2  * Copyright (C) 2016 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_CAMERA3_SHARED_OUTPUT_STREAM_H
     18 #define ANDROID_SERVERS_CAMERA3_SHARED_OUTPUT_STREAM_H
     19 
     20 #include "Camera3StreamSplitter.h"
     21 #include "Camera3OutputStream.h"
     22 
     23 namespace android {
     24 
     25 namespace camera3 {
     26 
     27 class Camera3SharedOutputStream :
     28         public Camera3OutputStream {
     29 public:
     30     /**
     31      * Set up a stream for formats that have 2 dimensions, with multiple
     32      * surfaces. A valid stream set id needs to be set to support buffer
     33      * sharing between multiple streams.
     34      */
     35     Camera3SharedOutputStream(int id, const std::vector<sp<Surface>>& surfaces,
     36             uint32_t width, uint32_t height, int format,
     37             uint32_t consumerUsage, android_dataspace dataSpace,
     38             camera3_stream_rotation_t rotation, nsecs_t timestampOffset,
     39             int setId = CAMERA3_STREAM_SET_ID_INVALID);
     40 
     41     virtual ~Camera3SharedOutputStream();
     42 
     43     virtual status_t notifyBufferReleased(ANativeWindowBuffer *buffer);
     44 
     45     virtual bool isConsumerConfigurationDeferred(size_t surface_id) const;
     46 
     47     virtual status_t setConsumers(const std::vector<sp<Surface>>& consumers);
     48 
     49 private:
     50     // Surfaces passed in constructor from app
     51     std::vector<sp<Surface> > mSurfaces;
     52 
     53     /**
     54      * The Camera3StreamSplitter object this stream uses for stream
     55      * sharing.
     56      */
     57     sp<Camera3StreamSplitter> mStreamSplitter;
     58 
     59     /**
     60      * Initialize stream splitter.
     61      */
     62     status_t connectStreamSplitterLocked();
     63 
     64     /**
     65      * Internal Camera3Stream interface
     66      */
     67     virtual status_t getBufferLocked(camera3_stream_buffer *buffer,
     68             const std::vector<size_t>& surface_ids);
     69 
     70     virtual status_t queueBufferToConsumer(sp<ANativeWindow>& consumer,
     71             ANativeWindowBuffer* buffer, int anwReleaseFence);
     72 
     73     virtual status_t configureQueueLocked();
     74 
     75     virtual status_t disconnectLocked();
     76 
     77     virtual status_t getEndpointUsage(uint32_t *usage) const;
     78 
     79 }; // class Camera3SharedOutputStream
     80 
     81 } // namespace camera3
     82 
     83 } // namespace android
     84 
     85 #endif // ANDROID_SERVERS_CAMERA3_SHARED_OUTPUT_STREAM_H
     86