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1 /*
2  * Copyright (C) 2013 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_OUTPUT_STREAM_H
18 #define ANDROID_SERVERS_CAMERA3_OUTPUT_STREAM_H
19 
20 #include <utils/RefBase.h>
21 #include <gui/Surface.h>
22 
23 #include "Camera3Stream.h"
24 #include "Camera3IOStreamBase.h"
25 #include "Camera3OutputStreamInterface.h"
26 
27 namespace android {
28 
29 namespace camera3 {
30 
31 /**
32  * A class for managing a single stream of output data from the camera device.
33  */
34 class Camera3OutputStream :
35         public Camera3IOStreamBase,
36         public Camera3OutputStreamInterface {
37   public:
38     /**
39      * Set up a stream for formats that have 2 dimensions, such as RAW and YUV.
40      */
41     Camera3OutputStream(int id, sp<ANativeWindow> consumer,
42             uint32_t width, uint32_t height, int format);
43 
44     /**
45      * Set up a stream for formats that have a variable buffer size for the same
46      * dimensions, such as compressed JPEG.
47      */
48     Camera3OutputStream(int id, sp<ANativeWindow> consumer,
49             uint32_t width, uint32_t height, size_t maxSize, int format);
50 
51     virtual ~Camera3OutputStream();
52 
53     /**
54      * Camera3Stream interface
55      */
56 
57     virtual void     dump(int fd, const Vector<String16> &args) const;
58 
59     /**
60      * Set the transform on the output stream; one of the
61      * HAL_TRANSFORM_* / NATIVE_WINDOW_TRANSFORM_* constants.
62      */
63     status_t         setTransform(int transform);
64 
65   protected:
66     Camera3OutputStream(int id, camera3_stream_type_t type,
67             uint32_t width, uint32_t height, int format);
68 
69     /**
70      * Note that we release the lock briefly in this function
71      */
72     virtual status_t returnBufferCheckedLocked(
73             const camera3_stream_buffer &buffer,
74             nsecs_t timestamp,
75             bool output,
76             /*out*/
77             sp<Fence> *releaseFenceOut);
78 
79     sp<ANativeWindow> mConsumer;
80   private:
81     int               mTransform;
82 
83     virtual status_t  setTransformLocked(int transform);
84 
85     /**
86      * Internal Camera3Stream interface
87      */
88     virtual status_t getBufferLocked(camera3_stream_buffer *buffer);
89     virtual status_t returnBufferLocked(
90             const camera3_stream_buffer &buffer,
91             nsecs_t timestamp);
92 
93     virtual status_t configureQueueLocked();
94     virtual status_t disconnectLocked();
95 }; // class Camera3OutputStream
96 
97 } // namespace camera3
98 
99 } // namespace android
100 
101 #endif
102