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Side by Side Diff: media/capture/video/video_capture_device.h

Issue 2059493002: Revert of Make media/capture gn and gyps produce components (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 4 years, 6 months ago
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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 // VideoCaptureDevice is the abstract base class for realizing video capture 5 // VideoCaptureDevice is the abstract base class for realizing video capture
6 // device support in Chromium. It provides the interface for OS dependent 6 // device support in Chromium. It provides the interface for OS dependent
7 // implementations. 7 // implementations.
8 // The class is created and functions are invoked on a thread owned by 8 // The class is created and functions are invoked on a thread owned by
9 // VideoCaptureManager. Capturing is done on other threads, depending on the OS 9 // VideoCaptureManager. Capturing is done on other threads, depending on the OS
10 // specific implementation. 10 // specific implementation.
11 11
12 #ifndef MEDIA_CAPTURE_VIDEO_VIDEO_CAPTURE_DEVICE_H_ 12 #ifndef MEDIA_CAPTURE_VIDEO_VIDEO_CAPTURE_DEVICE_H_
13 #define MEDIA_CAPTURE_VIDEO_VIDEO_CAPTURE_DEVICE_H_ 13 #define MEDIA_CAPTURE_VIDEO_VIDEO_CAPTURE_DEVICE_H_
14 14
15 #include <stddef.h> 15 #include <stddef.h>
16 #include <stdint.h> 16 #include <stdint.h>
17 17
18 #include <list> 18 #include <list>
19 #include <memory> 19 #include <memory>
20 #include <string> 20 #include <string>
21 21
22 #include "base/files/file.h" 22 #include "base/files/file.h"
23 #include "base/logging.h" 23 #include "base/logging.h"
24 #include "base/memory/ref_counted.h" 24 #include "base/memory/ref_counted.h"
25 #include "base/single_thread_task_runner.h" 25 #include "base/single_thread_task_runner.h"
26 #include "base/time/time.h" 26 #include "base/time/time.h"
27 #include "build/build_config.h" 27 #include "build/build_config.h"
28 #include "media/base/media_export.h"
28 #include "media/base/video_capture_types.h" 29 #include "media/base/video_capture_types.h"
29 #include "media/base/video_frame.h" 30 #include "media/base/video_frame.h"
30 #include "media/capture/capture_export.h"
31 #include "media/capture/video/scoped_result_callback.h" 31 #include "media/capture/video/scoped_result_callback.h"
32 #include "mojo/public/cpp/bindings/array.h" 32 #include "mojo/public/cpp/bindings/array.h"
33 #include "mojo/public/cpp/bindings/callback.h" 33 #include "mojo/public/cpp/bindings/callback.h"
34 #include "ui/gfx/gpu_memory_buffer.h" 34 #include "ui/gfx/gpu_memory_buffer.h"
35 35
36 namespace tracked_objects { 36 namespace tracked_objects {
37 class Location; 37 class Location;
38 } // namespace tracked_objects 38 } // namespace tracked_objects
39 39
40 namespace media { 40 namespace media {
41 41
42 class CAPTURE_EXPORT VideoCaptureDevice { 42 class MEDIA_EXPORT VideoCaptureDevice {
43 public: 43 public:
44 // Represents a capture device name and ID. 44 // Represents a capture device name and ID.
45 // You should not create an instance of this class directly by e.g. setting 45 // You should not create an instance of this class directly by e.g. setting
46 // various properties directly. Instead use 46 // various properties directly. Instead use
47 // VideoCaptureDevice::GetDeviceNames to do this for you and if you need to 47 // VideoCaptureDevice::GetDeviceNames to do this for you and if you need to
48 // cache your own copy of a name, you can do so via the copy constructor. 48 // cache your own copy of a name, you can do so via the copy constructor.
49 // The reason for this is that a device name might contain platform specific 49 // The reason for this is that a device name might contain platform specific
50 // settings that are relevant only to the platform specific implementation of 50 // settings that are relevant only to the platform specific implementation of
51 // VideoCaptureDevice::Create. 51 // VideoCaptureDevice::Create.
52 class CAPTURE_EXPORT Name { 52 class MEDIA_EXPORT Name {
53 public: 53 public:
54 Name(); 54 Name();
55 Name(const std::string& name, const std::string& id); 55 Name(const std::string& name, const std::string& id);
56 56
57 #if defined(OS_LINUX) 57 #if defined(OS_LINUX)
58 // Linux/CrOS targets Capture Api type: it can only be set on construction. 58 // Linux/CrOS targets Capture Api type: it can only be set on construction.
59 enum CaptureApiType { 59 enum CaptureApiType {
60 V4L2_SINGLE_PLANE, 60 V4L2_SINGLE_PLANE,
61 API_TYPE_UNKNOWN 61 API_TYPE_UNKNOWN
62 }; 62 };
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172 // Allow generated copy constructor and assignment. 172 // Allow generated copy constructor and assignment.
173 }; 173 };
174 174
175 // Manages a list of Name entries. 175 // Manages a list of Name entries.
176 typedef std::list<Name> Names; 176 typedef std::list<Name> Names;
177 177
178 // Interface defining the methods that clients of VideoCapture must have. It 178 // Interface defining the methods that clients of VideoCapture must have. It
179 // is actually two-in-one: clients may implement OnIncomingCapturedData() or 179 // is actually two-in-one: clients may implement OnIncomingCapturedData() or
180 // ReserveOutputBuffer() + OnIncomingCapturedVideoFrame(), or all of them. 180 // ReserveOutputBuffer() + OnIncomingCapturedVideoFrame(), or all of them.
181 // All clients must implement OnError(). 181 // All clients must implement OnError().
182 class CAPTURE_EXPORT Client { 182 class MEDIA_EXPORT Client {
183 public: 183 public:
184 // Memory buffer returned by Client::ReserveOutputBuffer(). 184 // Memory buffer returned by Client::ReserveOutputBuffer().
185 class CAPTURE_EXPORT Buffer { 185 class MEDIA_EXPORT Buffer {
186 public: 186 public:
187 virtual ~Buffer() = 0; 187 virtual ~Buffer() = 0;
188 virtual int id() const = 0; 188 virtual int id() const = 0;
189 virtual gfx::Size dimensions() const = 0; 189 virtual gfx::Size dimensions() const = 0;
190 virtual size_t mapped_size() const = 0; 190 virtual size_t mapped_size() const = 0;
191 virtual void* data(int plane) = 0; 191 virtual void* data(int plane) = 0;
192 void* data() { return data(0); } 192 void* data() { return data(0); }
193 virtual ClientBuffer AsClientBuffer(int plane) = 0; 193 virtual ClientBuffer AsClientBuffer(int plane) = 0;
194 #if defined(OS_POSIX) && !(defined(OS_MACOSX) && !defined(OS_IOS)) 194 #if defined(OS_POSIX) && !(defined(OS_MACOSX) && !defined(OS_IOS))
195 virtual base::FileDescriptor AsPlatformFile() = 0; 195 virtual base::FileDescriptor AsPlatformFile() = 0;
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326 326
327 private: 327 private:
328 // Gets the power line frequency from the current system time zone if this is 328 // Gets the power line frequency from the current system time zone if this is
329 // defined, otherwise returns 0. 329 // defined, otherwise returns 0.
330 PowerLineFrequency GetPowerLineFrequencyForLocation() const; 330 PowerLineFrequency GetPowerLineFrequencyForLocation() const;
331 }; 331 };
332 332
333 } // namespace media 333 } // namespace media
334 334
335 #endif // MEDIA_CAPTURE_VIDEO_VIDEO_CAPTURE_DEVICE_H_ 335 #endif // MEDIA_CAPTURE_VIDEO_VIDEO_CAPTURE_DEVICE_H_
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