ScreenRecorder-pds

Screen recorder built using FFmpeg 4.1 library. Project realized for System and Device Programming course of Politecnico di Torino

Linux

Dependencies:

• libavcodec
• libavformat
• libavfilter
• libavutil
• libavdevice
• libswscale
• libswresample
• libx11

Before build the preject, perform (check that install_dependencies.sh and build.sh have execution permission):

• sudo ./install_dependencies.sh

To build and execute the project:

• ./build.sh
• cd build
• ./ScreenRecoder-pds

Last test on linux with versions:

• libavutil 56. 51.100 / 56. 51.100
• libavcodec 58. 91.100 / 58. 91.100
• libavformat 58. 45.100 / 58. 45.100
• libavdevice 58. 10.100 / 58. 10.100
• libavfilter 7. 85.100 / 7. 85.100
• libavresample 4. 0. 0 / 4. 0. 0
• libswresample 3. 7.100 / 3. 7.100
• libx11 2: 1.7.2-1

Develop your own project

To develop your own project, you can use the ScreenRecorder.cpp as wrapper APIs for FFmpeg librarry.

Documentation

• void getScreenResolution(int& width, int& height)

  Get dimensions of main desktop
  

• void stopCommand()

  Permits to stop recording
  

• void pauseCommand()

  Permits to pause recording in order to be resumed later
  

• void resumeCommand()

  Permits to resume paused recording
  

• bool getStarted()

  Read if recording is started or not
  

• bool getActiveMenu()

  Read if menu is active or not (thread safe)
  

• void setActiveMenu(bool val)

  Comunicate that the menu has been activated (thread safe)
  

• bool getDisabledMenu()

  Read if menu is disabled
  

• bool getRecordAudio()

  Read if audio is enabled or not
  

• void setRecordAudio(bool val)

  Permits to enable audio recording
  

• void setOutputDir(const char* dir)

  Permits to set output directory (defuault: .)
  

• void setScreenDimension(int width, int height)

  Override screen dimension to record (default->desktop dimension)
  

• void setScreenOffset(int x_offset, int y_offset)

  Override screen offset (default->x=0, y=0)
  

• int initOutputFile() throw()

  Initialize the output file
  

• void startRecording() throw()

  Start recording (audio is optional)
  Open devices ans initialize the output file
  

• int openVideoDevice() throw()

  Open input video device
  

• void generateVideoStream() throw()

  Find information for video stream
  Called by initOutputFile()    
  

• int captureVideoFrames()

  Start recording video in a different thread
  

• int openAudioDevice() throw()

  Open audio device
  

• void generateAudioStream() throw()

  Find information for audio stream
  Called by initOutputFile()
  

• void captureAudio()

  Start recording video in a different thread