Line data    Source code

       1             : /*
       2             :  *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
       3             :  *
       4             :  *  Use of this source code is governed by a BSD-style license
       5             :  *  that can be found in the LICENSE file in the root of the source
       6             :  *  tree. An additional intellectual property rights grant can be found
       7             :  *  in the file PATENTS.  All contributing project authors may
       8             :  *  be found in the AUTHORS file in the root of the source tree.
       9             :  */
      10             : 
      11             : #ifndef WEBRTC_MODULES_VIDEO_CAPTURE_MAIN_SOURCE_LINUX_DEVICE_INFO_LINUX_H_
      12             : #define WEBRTC_MODULES_VIDEO_CAPTURE_MAIN_SOURCE_LINUX_DEVICE_INFO_LINUX_H_
      13             : 
      14             : #include "webrtc/modules/video_capture/device_info_impl.h"
      15             : #include "webrtc/modules/video_capture/video_capture_impl.h"
      16             : #ifdef WEBRTC_LINUX
      17             : #include <memory>
      18             : 
      19             : #include "webrtc/base/platform_thread.h"
      20             : #include "webrtc/system_wrappers/include/atomic32.h"
      21             : #include <sys/inotify.h>
      22             : #endif
      23             : 
      24             : namespace webrtc
      25             : {
      26             : namespace videocapturemodule
      27             : {
      28             : class DeviceInfoLinux: public DeviceInfoImpl
      29             : {
      30             : public:
      31             :     DeviceInfoLinux();
      32             :     virtual ~DeviceInfoLinux();
      33             :     virtual uint32_t NumberOfDevices();
      34             :     virtual int32_t GetDeviceName(
      35             :         uint32_t deviceNumber,
      36             :         char* deviceNameUTF8,
      37             :         uint32_t deviceNameLength,
      38             :         char* deviceUniqueIdUTF8,
      39             :         uint32_t deviceUniqueIdUTF8Length,
      40             :         char* productUniqueIdUTF8=0,
      41             :         uint32_t productUniqueIdUTF8Length=0,
      42             :         pid_t* pid=0);
      43             :     /*
      44             :     * Fills the membervariable _captureCapabilities with capabilites for the given device name.
      45             :     */
      46             :     virtual int32_t CreateCapabilityMap (const char* deviceUniqueIdUTF8);
      47           0 :     virtual int32_t DisplayCaptureSettingsDialogBox(
      48             :         const char* /*deviceUniqueIdUTF8*/,
      49             :         const char* /*dialogTitleUTF8*/,
      50             :         void* /*parentWindow*/,
      51             :         uint32_t /*positionX*/,
      52           0 :         uint32_t /*positionY*/) { return -1;}
      53             :     int32_t FillCapabilities(int fd);
      54             :     int32_t Init();
      55             : private:
      56             : 
      57             :     bool IsDeviceNameMatches(const char* name, const char* deviceUniqueIdUTF8);
      58             : 
      59             : #ifdef WEBRTC_LINUX
      60             :     void HandleEvent(inotify_event* event, int fd);
      61             :     int EventCheck(int fd);
      62             :     int HandleEvents(int fd);
      63             :     int ProcessInotifyEvents();
      64             :     std::unique_ptr<rtc::PlatformThread> _inotifyEventThread;
      65             :     static bool InotifyEventThread(void*);
      66             :     bool InotifyProcess();
      67             :     int _fd_v4l, _fd_snd, _fd_dev, _wd_v4l, _wd_snd, _wd_dev; /* accessed on InotifyEventThread thread */
      68             :     Atomic32 _isShutdown;
      69             : #endif
      70             : };
      71             : }  // namespace videocapturemodule
      72             : }  // namespace webrtc
      73             : #endif // WEBRTC_MODULES_VIDEO_CAPTURE_MAIN_SOURCE_LINUX_DEVICE_INFO_LINUX_H_