Camera3OutputStream.h revision 727d172137b4f32681c098de8e2623c0b65a6406 
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
27namespace android {
28
29namespace camera3 {
30
31/**
32 * A class for managing a single stream of output data from the camera device.
33 */
34class 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<Surface> consumer,
42            uint32_t width, uint32_t height, int format,
43            android_dataspace dataSpace, camera3_stream_rotation_t rotation);
44
45    /**
46     * Set up a stream for formats that have a variable buffer size for the same
47     * dimensions, such as compressed JPEG.
48     */
49    Camera3OutputStream(int id, sp<Surface> consumer,
50            uint32_t width, uint32_t height, size_t maxSize, int format,
51            android_dataspace dataSpace, camera3_stream_rotation_t rotation);
52
53    virtual ~Camera3OutputStream();
54
55    /**
56     * Camera3Stream interface
57     */
58
59    virtual void     dump(int fd, const Vector<String16> &args) const;
60
61    /**
62     * Set the transform on the output stream; one of the
63     * HAL_TRANSFORM_* / NATIVE_WINDOW_TRANSFORM_* constants.
64     */
65    status_t         setTransform(int transform);
66
67  protected:
68    Camera3OutputStream(int id, camera3_stream_type_t type,
69            uint32_t width, uint32_t height, int format,
70            android_dataspace dataSpace, camera3_stream_rotation_t rotation);
71
72    /**
73     * Note that we release the lock briefly in this function
74     */
75    virtual status_t returnBufferCheckedLocked(
76            const camera3_stream_buffer &buffer,
77            nsecs_t timestamp,
78            bool output,
79            /*out*/
80            sp<Fence> *releaseFenceOut);
81
82    virtual status_t disconnectLocked();
83
84    sp<Surface> mConsumer;
85  private:
86    int               mTransform;
87
88    virtual status_t  setTransformLocked(int transform);
89
90    bool mTraceFirstBuffer;
91
92    // Name of Surface consumer
93    String8           mConsumerName;
94
95    /**
96     * Internal Camera3Stream interface
97     */
98    virtual status_t getBufferLocked(camera3_stream_buffer *buffer);
99    virtual status_t returnBufferLocked(
100            const camera3_stream_buffer &buffer,
101            nsecs_t timestamp);
102
103    virtual status_t configureQueueLocked();
104
105    virtual status_t getEndpointUsage(uint32_t *usage) const;
106
107}; // class Camera3OutputStream
108
109} // namespace camera3
110
111} // namespace android
112
113#endif
114