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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef CONTENT_RENDERER_MEDIA_VIDEO_CAPTURE_IMPL_MANAGER_H_ | 5 #ifndef CONTENT_RENDERER_MEDIA_VIDEO_CAPTURE_IMPL_MANAGER_H_ |
6 #define CONTENT_RENDERER_MEDIA_VIDEO_CAPTURE_IMPL_MANAGER_H_ | 6 #define CONTENT_RENDERER_MEDIA_VIDEO_CAPTURE_IMPL_MANAGER_H_ |
7 | 7 |
8 #include <map> | |
9 #include <memory> | 8 #include <memory> |
9 #include <vector> | |
10 | 10 |
11 #include "base/callback.h" | 11 #include "base/callback.h" |
12 #include "base/macros.h" | 12 #include "base/macros.h" |
13 #include "base/memory/ref_counted.h" | 13 #include "base/memory/ref_counted.h" |
14 #include "base/memory/weak_ptr.h" | 14 #include "base/memory/weak_ptr.h" |
15 #include "base/single_thread_task_runner.h" | 15 #include "base/single_thread_task_runner.h" |
16 #include "base/synchronization/lock.h" | 16 #include "base/synchronization/lock.h" |
17 #include "base/threading/thread_checker.h" | 17 #include "base/threading/thread_checker.h" |
18 #include "content/common/content_export.h" | 18 #include "content/common/content_export.h" |
19 #include "content/common/media/video_capture.h" | 19 #include "content/common/media/video_capture.h" |
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70 base::Closure StartCapture( | 70 base::Closure StartCapture( |
71 media::VideoCaptureSessionId id, | 71 media::VideoCaptureSessionId id, |
72 const media::VideoCaptureParams& params, | 72 const media::VideoCaptureParams& params, |
73 const VideoCaptureStateUpdateCB& state_update_cb, | 73 const VideoCaptureStateUpdateCB& state_update_cb, |
74 const VideoCaptureDeliverFrameCB& deliver_frame_cb); | 74 const VideoCaptureDeliverFrameCB& deliver_frame_cb); |
75 | 75 |
76 // Requests that the video capturer send a frame "soon" (e.g., to resolve | 76 // Requests that the video capturer send a frame "soon" (e.g., to resolve |
77 // picture loss or quality issues). | 77 // picture loss or quality issues). |
78 void RequestRefreshFrame(media::VideoCaptureSessionId id); | 78 void RequestRefreshFrame(media::VideoCaptureSessionId id); |
79 | 79 |
80 // Requests frame delivery be suspended/resumed for a given capture session. | |
81 void Suspend(media::VideoCaptureSessionId id); | |
82 void Resume(media::VideoCaptureSessionId id); | |
83 | |
80 // Get supported formats supported by the device for the given session | 84 // Get supported formats supported by the device for the given session |
81 // ID. |callback| will be called on the IO thread. | 85 // ID. |callback| will be called on the IO thread. |
82 void GetDeviceSupportedFormats(media::VideoCaptureSessionId id, | 86 void GetDeviceSupportedFormats(media::VideoCaptureSessionId id, |
83 const VideoCaptureDeviceFormatsCB& callback); | 87 const VideoCaptureDeviceFormatsCB& callback); |
84 | 88 |
85 // Get supported formats currently in use for the given session ID. | 89 // Get supported formats currently in use for the given session ID. |
86 // |callback| will be called on the IO thread. | 90 // |callback| will be called on the IO thread. |
87 void GetDeviceFormatsInUse(media::VideoCaptureSessionId id, | 91 void GetDeviceFormatsInUse(media::VideoCaptureSessionId id, |
88 const VideoCaptureDeviceFormatsCB& callback); | 92 const VideoCaptureDeviceFormatsCB& callback); |
89 | 93 |
90 // Make all existing VideoCaptureImpl instances stop/resume delivering | 94 // Make all existing VideoCaptureImpl instances stop/resume delivering |
91 // video frames to their clients, depends on flag |suspend|. | 95 // video frames to their clients, depends on flag |suspend|. This is called in |
96 // response to a RenderView-wide PageHidden/Shown() event. To suspend/resume | |
97 // an individual session, please call Suspend(id) or Resume(id). | |
92 void SuspendDevices(bool suspend); | 98 void SuspendDevices(bool suspend); |
chfremer
2016/09/27 00:54:59
Deciding which devices need to be suspended/resume
miu
2016/09/27 23:42:23
No, that's not the scoping/responsibility of this
chfremer
2016/09/28 00:27:36
Oops, I have misunderstood the responsibilities of
| |
93 | 99 |
94 VideoCaptureMessageFilter* video_capture_message_filter() const { | 100 VideoCaptureMessageFilter* video_capture_message_filter() const { |
95 return filter_.get(); | 101 return filter_.get(); |
96 } | 102 } |
97 | 103 |
98 protected: | 104 protected: |
99 virtual VideoCaptureImpl* CreateVideoCaptureImplForTesting( | 105 virtual std::unique_ptr<VideoCaptureImpl> CreateVideoCaptureImplForTesting( |
100 media::VideoCaptureSessionId id, | 106 media::VideoCaptureSessionId id, |
101 VideoCaptureMessageFilter* filter) const; | 107 VideoCaptureMessageFilter* filter) const; |
102 | 108 |
103 private: | 109 private: |
110 struct DeviceEntry { | |
111 media::VideoCaptureSessionId session_id; | |
112 | |
113 // To be used and destroyed only on the IO thread. | |
114 std::unique_ptr<VideoCaptureImpl> impl; | |
115 | |
116 // Number of clients using |impl|. | |
117 int client_count; | |
118 | |
119 // This is set to true if this device is being suspended, via | |
120 // VideoCaptureImplManager::Suspend(). | |
121 // See also: VideoCaptureImplManager::is_suspending_all_. | |
122 bool is_individually_suspended; | |
123 | |
124 DeviceEntry(); | |
125 DeviceEntry(DeviceEntry&& other); | |
126 DeviceEntry& operator=(DeviceEntry&& other); | |
127 ~DeviceEntry(); | |
128 }; | |
129 | |
104 void StopCapture(int client_id, media::VideoCaptureSessionId id); | 130 void StopCapture(int client_id, media::VideoCaptureSessionId id); |
105 void UnrefDevice(media::VideoCaptureSessionId id); | 131 void UnrefDevice(media::VideoCaptureSessionId id); |
106 | 132 |
107 // The int is used to count clients of the corresponding VideoCaptureImpl. | 133 // Devices currently in use. |
108 // VideoCaptureImpl objects are owned by this object. But they are | 134 std::vector<DeviceEntry> devices_; |
109 // destroyed on the IO thread. These are raw pointers because we destroy | |
110 // them manually. | |
111 typedef std::map<media::VideoCaptureSessionId, | |
112 std::pair<int, VideoCaptureImpl*>> VideoCaptureDeviceMap; | |
113 VideoCaptureDeviceMap devices_; | |
114 | 135 |
115 // This is an internal ID for identifying clients of VideoCaptureImpl. | 136 // This is an internal ID for identifying clients of VideoCaptureImpl. |
116 // The ID is global for the render process. | 137 // The ID is global for the render process. |
117 int next_client_id_; | 138 int next_client_id_; |
118 | 139 |
119 const scoped_refptr<VideoCaptureMessageFilter> filter_; | 140 const scoped_refptr<VideoCaptureMessageFilter> filter_; |
120 | 141 |
121 // Hold a pointer to the Render Main message loop to check we operate on the | 142 // Hold a pointer to the Render Main message loop to check we operate on the |
122 // right thread. | 143 // right thread. |
123 const scoped_refptr<base::SingleThreadTaskRunner> render_main_task_runner_; | 144 const scoped_refptr<base::SingleThreadTaskRunner> render_main_task_runner_; |
124 | 145 |
146 // Set to true if SuspendDevices(true) was called. This, along with | |
147 // DeviceEntry::is_individually_suspended, is used to determine whether to | |
148 // take action when suspending/resuming each device. | |
149 bool is_suspending_all_; | |
150 | |
125 // Bound to the render thread. | 151 // Bound to the render thread. |
126 // NOTE: Weak pointers must be invalidated before all other member variables. | 152 // NOTE: Weak pointers must be invalidated before all other member variables. |
127 base::WeakPtrFactory<VideoCaptureImplManager> weak_factory_; | 153 base::WeakPtrFactory<VideoCaptureImplManager> weak_factory_; |
128 | 154 |
129 DISALLOW_COPY_AND_ASSIGN(VideoCaptureImplManager); | 155 DISALLOW_COPY_AND_ASSIGN(VideoCaptureImplManager); |
130 }; | 156 }; |
131 | 157 |
132 } // namespace content | 158 } // namespace content |
133 | 159 |
134 #endif // CONTENT_RENDERER_MEDIA_VIDEO_CAPTURE_IMPL_MANAGER_H_ | 160 #endif // CONTENT_RENDERER_MEDIA_VIDEO_CAPTURE_IMPL_MANAGER_H_ |
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