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/*
* Copyright (c) 2014 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 WEBRTC_MODULES_DESKTOP_CAPTURE_MAIN_SOURCE_DESKTOP_CAPTURE_IMPL_H_
#define WEBRTC_MODULES_DESKTOP_CAPTURE_MAIN_SOURCE_DESKTOP_CAPTURE_IMPL_H_
/*
* video_capture_impl.h
*/
#include <string>
#include <memory>
#include "api/video/video_frame.h"
#include "common_video/libyuv/include/webrtc_libyuv.h"
#include "modules/video_capture/video_capture_config.h"
#include "modules/desktop_capture/shared_memory.h"
#include "modules/desktop_capture/desktop_device_info.h"
#include "modules/desktop_capture/desktop_and_cursor_composer.h"
#include "system_wrappers/include/event_wrapper.h"
#include <set>
using namespace webrtc::videocapturemodule;
namespace rtc {
#if defined(_WIN32)
class PlatformUIThread;
#else
class PlatformThread;
#endif
} // namespace rtc
namespace webrtc {
class VideoCaptureEncodeInterface;
// simulate deviceInfo interface for video engine, bridge screen/application and
// real screen/application device info
class ScreenDeviceInfoImpl : public VideoCaptureModule::DeviceInfo {
public:
ScreenDeviceInfoImpl(const int32_t id);
virtual ~ScreenDeviceInfoImpl(void);
int32_t Init();
int32_t Refresh();
virtual uint32_t NumberOfDevices();
virtual int32_t GetDeviceName(uint32_t deviceNumber, char* deviceNameUTF8,
uint32_t deviceNameLength,
char* deviceUniqueIdUTF8,
uint32_t deviceUniqueIdUTF8Length,
char* productUniqueIdUTF8,
uint32_t productUniqueIdUTF8Length, pid_t* pid);
virtual int32_t DisplayCaptureSettingsDialogBox(
const char* deviceUniqueIdUTF8, const char* dialogTitleUTF8,
void* parentWindow, uint32_t positionX, uint32_t positionY);
virtual int32_t NumberOfCapabilities(const char* deviceUniqueIdUTF8);
virtual int32_t GetCapability(const char* deviceUniqueIdUTF8,
const uint32_t deviceCapabilityNumber,
VideoCaptureCapability& capability);
virtual int32_t GetBestMatchedCapability(
const char* deviceUniqueIdUTF8, const VideoCaptureCapability& requested,
VideoCaptureCapability& resulting);
virtual int32_t GetOrientation(const char* deviceUniqueIdUTF8,
VideoRotation& orientation);
protected:
int32_t _id;
std::unique_ptr<DesktopDeviceInfo> desktop_device_info_;
};
class WindowDeviceInfoImpl : public VideoCaptureModule::DeviceInfo {
public:
WindowDeviceInfoImpl(const int32_t id) : _id(id){};
virtual ~WindowDeviceInfoImpl(void){};
int32_t Init();
int32_t Refresh();
virtual uint32_t NumberOfDevices();
virtual int32_t GetDeviceName(uint32_t deviceNumber, char* deviceNameUTF8,
uint32_t deviceNameLength,
char* deviceUniqueIdUTF8,
uint32_t deviceUniqueIdUTF8Length,
char* productUniqueIdUTF8,
uint32_t productUniqueIdUTF8Length, pid_t* pid);
virtual int32_t DisplayCaptureSettingsDialogBox(
const char* deviceUniqueIdUTF8, const char* dialogTitleUTF8,
void* parentWindow, uint32_t positionX, uint32_t positionY);
virtual int32_t NumberOfCapabilities(const char* deviceUniqueIdUTF8);
virtual int32_t GetCapability(const char* deviceUniqueIdUTF8,
const uint32_t deviceCapabilityNumber,
VideoCaptureCapability& capability);
virtual int32_t GetBestMatchedCapability(
const char* deviceUniqueIdUTF8, const VideoCaptureCapability& requested,
VideoCaptureCapability& resulting);
virtual int32_t GetOrientation(const char* deviceUniqueIdUTF8,
VideoRotation& orientation);
protected:
int32_t _id;
std::unique_ptr<DesktopDeviceInfo> desktop_device_info_;
};
class BrowserDeviceInfoImpl : public VideoCaptureModule::DeviceInfo {
public:
BrowserDeviceInfoImpl(const int32_t id) : _id(id){};
virtual ~BrowserDeviceInfoImpl(void){};
int32_t Init();
int32_t Refresh();
virtual uint32_t NumberOfDevices();
virtual int32_t GetDeviceName(uint32_t deviceNumber, char* deviceNameUTF8,
uint32_t deviceNameLength,
char* deviceUniqueIdUTF8,
uint32_t deviceUniqueIdUTF8Length,
char* productUniqueIdUTF8,
uint32_t productUniqueIdUTF8Length, pid_t* pid);
virtual int32_t DisplayCaptureSettingsDialogBox(
const char* deviceUniqueIdUTF8, const char* dialogTitleUTF8,
void* parentWindow, uint32_t positionX, uint32_t positionY);
virtual int32_t NumberOfCapabilities(const char* deviceUniqueIdUTF8);
virtual int32_t GetCapability(const char* deviceUniqueIdUTF8,
const uint32_t deviceCapabilityNumber,
VideoCaptureCapability& capability);
virtual int32_t GetBestMatchedCapability(
const char* deviceUniqueIdUTF8, const VideoCaptureCapability& requested,
VideoCaptureCapability& resulting);
virtual int32_t GetOrientation(const char* deviceUniqueIdUTF8,
VideoRotation& orientation);
protected:
int32_t _id;
std::unique_ptr<DesktopDeviceInfo> desktop_device_info_;
};
// Reuses the video engine pipeline for screen sharing.
// As with video, DesktopCaptureImpl is a proxy for screen sharing
// and follows the video pipeline design
class DesktopCaptureImpl : public DesktopCapturer::Callback,
public VideoCaptureModule,
public VideoCaptureExternal {
public:
/* Create a screen capture modules object
*/
static VideoCaptureModule* Create(const int32_t id, const char* uniqueId,
const CaptureDeviceType type);
static VideoCaptureModule::DeviceInfo* CreateDeviceInfo(
const int32_t id, const CaptureDeviceType type);
// Call backs
void RegisterCaptureDataCallback(
rtc::VideoSinkInterface<VideoFrame>* dataCallback) override;
void DeRegisterCaptureDataCallback(
rtc::VideoSinkInterface<VideoFrame>* dataCallback) override;
int32_t StopCaptureIfAllClientsClose() override;
int32_t SetCaptureRotation(VideoRotation rotation) override;
bool SetApplyRotation(bool enable) override;
bool GetApplyRotation() override { return true; }
const char* CurrentDeviceName() const override;
// Implement VideoCaptureExternal
// |capture_time| must be specified in the NTP time format in milliseconds.
int32_t IncomingFrame(uint8_t* videoFrame, size_t videoFrameLength,
const VideoCaptureCapability& frameInfo,
int64_t captureTime = 0) override;
// Platform dependent
int32_t StartCapture(const VideoCaptureCapability& capability) override;
virtual bool FocusOnSelectedSource() override;
int32_t StopCapture() override;
bool CaptureStarted() override;
int32_t CaptureSettings(VideoCaptureCapability& settings) override;
protected:
DesktopCaptureImpl(const int32_t id, const char* uniqueId,
const CaptureDeviceType type);
virtual ~DesktopCaptureImpl();
int32_t DeliverCapturedFrame(webrtc::VideoFrame& captureFrame,
int64_t capture_time);
static const uint32_t kMaxDesktopCaptureCpuUsage =
50; // maximum CPU usage in %
int32_t _id; // Module ID
std::string _deviceUniqueId; // current Device unique name;
CaptureDeviceType _deviceType;
VideoCaptureCapability
_requestedCapability; // Should be set by platform dependent code in
// StartCapture.
private:
int32_t Init();
void UpdateFrameCount();
uint32_t CalculateFrameRate(int64_t now_ns);
rtc::CriticalSection _apiCs;
std::set<rtc::VideoSinkInterface<VideoFrame>*> _dataCallBacks;
int64_t _incomingFrameTimesNanos
[kFrameRateCountHistorySize]; // timestamp for local captured frames
VideoRotation _rotateFrame; // Set if the frame should be rotated by the
// capture module.
std::atomic<uint32_t> _maxFPSNeeded;
// Used to make sure incoming timestamp is increasing for every frame.
int64_t last_capture_time_;
// Delta used for translating between NTP and internal timestamps.
const int64_t delta_ntp_internal_ms_;
// DesktopCapturer::Callback interface.
void OnCaptureResult(DesktopCapturer::Result result,
std::unique_ptr<DesktopFrame> frame) override;
public:
static bool Run(void* obj) {
static_cast<DesktopCaptureImpl*>(obj)->process();
return true;
};
void process();
private:
// This is created on the main thread and accessed on both the main thread
// and the capturer thread. It is created prior to the capturer thread
// starting and is destroyed after it is stopped.
std::unique_ptr<DesktopCapturer> desktop_capturer_cursor_composer_;
std::unique_ptr<EventWrapper> time_event_;
#if defined(_WIN32)
std::unique_ptr<rtc::PlatformUIThread> capturer_thread_;
#else
std::unique_ptr<rtc::PlatformThread> capturer_thread_;
#endif
bool started_;
};
} // namespace webrtc
#endif // WEBRTC_MODULES_DESKTOP_CAPTURE_MAIN_SOURCE_DESKTOP_CAPTURE_IMPL_H_
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