1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
|
/*
* Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef MODULES_VIDEO_CAPTURE_LINUX_DEVICE_INFO_V4L2_H_
#define MODULES_VIDEO_CAPTURE_LINUX_DEVICE_INFO_V4L2_H_
#include <stdint.h>
#include "modules/video_capture/device_info_impl.h"
#include "rtc_base/platform_thread.h"
#ifdef WEBRTC_LINUX
#include <sys/inotify.h>
#endif
struct v4l2_capability;
namespace webrtc {
namespace videocapturemodule {
class DeviceInfoV4l2 : public DeviceInfoImpl {
public:
DeviceInfoV4l2();
~DeviceInfoV4l2() override;
uint32_t NumberOfDevices() override;
int32_t GetDeviceName(uint32_t deviceNumber,
char* deviceNameUTF8,
uint32_t deviceNameLength,
char* deviceUniqueIdUTF8,
uint32_t deviceUniqueIdUTF8Length,
char* productUniqueIdUTF8 = 0,
uint32_t productUniqueIdUTF8Length = 0,
pid_t* pid = 0,
bool* deviceIsPlaceholder = 0) override;
/*
* Fills the membervariable _captureCapabilities with capabilites for the
* given device name.
*/
int32_t CreateCapabilityMap(const char* deviceUniqueIdUTF8) override
RTC_EXCLUSIVE_LOCKS_REQUIRED(_apiLock);
int32_t DisplayCaptureSettingsDialogBox(const char* /*deviceUniqueIdUTF8*/,
const char* /*dialogTitleUTF8*/,
void* /*parentWindow*/,
uint32_t /*positionX*/,
uint32_t /*positionY*/) override;
int32_t FillCapabilities(int fd) RTC_EXCLUSIVE_LOCKS_REQUIRED(_apiLock);
int32_t Init() override;
private:
bool IsDeviceNameMatches(const char* name, const char* deviceUniqueIdUTF8);
bool IsVideoCaptureDevice(struct v4l2_capability* cap);
#ifdef WEBRTC_LINUX
void HandleEvent(inotify_event* event, int fd);
int EventCheck(int fd);
int HandleEvents(int fd);
int ProcessInotifyEvents();
rtc::PlatformThread _inotifyEventThread;
void InotifyProcess();
int _fd_v4l, _fd_dev, _wd_v4l, _wd_dev; /* accessed on InotifyEventThread thread */
std::atomic<bool> _isShutdown;
#endif
};
} // namespace videocapturemodule
} // namespace webrtc
#endif // MODULES_VIDEO_CAPTURE_LINUX_DEVICE_INFO_V4L2_H_
|
