Camera3OutputStream.h revision 7b82efe7a376c882f8f938e1c41b8311a8cdda4a 
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<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