Module: MobyUtil

Defined in:
lib/tdriver/util/xml/xml.rb,
lib/tdriver/util/xml/text.rb,
lib/tdriver/util/xml/error.rb,
lib/tdriver/util/common/gem.rb,
lib/tdriver/util/common/file.rb,
lib/tdriver/util/xml/builder.rb,
lib/tdriver/util/xml/comment.rb,
lib/tdriver/util/xml/element.rb,
lib/tdriver/util/xml/nodeset.rb,
lib/tdriver/util/common/array.rb,
lib/tdriver/util/common/error.rb,
lib/tdriver/util/plugin/error.rb,
lib/tdriver/util/video/camera.rb,
lib/tdriver/util/xml/document.rb,
lib/tdriver/util/xml/nil_node.rb,
lib/tdriver/util/common/kernel.rb,
lib/tdriver/util/common/string.rb,
lib/tdriver/util/logger/logger.rb,
lib/tdriver/util/xml/attribute.rb,
lib/tdriver/util/database/error.rb,
lib/tdriver/util/plugin/service.rb,
lib/tdriver/util/database/access.rb,
lib/tdriver/util/hooking/hooking.rb,
lib/tdriver/util/parameter/error.rb,
lib/tdriver/util/plugin/abstract.rb,
lib/tdriver/util/user_data/error.rb,
lib/tdriver/util/xml/abstraction.rb,
lib/tdriver/util/common/retryable.rb,
lib/tdriver/util/recorder/recorder.rb,
lib/tdriver/util/recorder/scripter.rb,
lib/tdriver/util/video/video_utils.rb,
lib/tdriver/util/common/environment.rb,
lib/tdriver/util/localisation/error.rb,
lib/tdriver/util/video/camera_linux.rb,
lib/tdriver/util/database/connection.rb,
lib/tdriver/util/operator_data/error.rb,
lib/tdriver/util/parameter/parameter.rb,
lib/tdriver/util/user_data/user_data.rb,
lib/tdriver/util/video/camera_windows.rb,
lib/tdriver/util/statistics/statistics.rb,
lib/tdriver/util/filters/attribute_filter.rb,
lib/tdriver/util/localisation/localisation.rb,
lib/tdriver/util/xml/parsers/libxml/libxml.rb,
lib/tdriver/util/xml/parsers/nokogiri/node.rb,
lib/tdriver/util/xml/parsers/nokogiri/text.rb,
lib/tdriver/util/operator_data/operator_data.rb,
lib/tdriver/util/xml/parsers/nokogiri/builder.rb,
lib/tdriver/util/xml/parsers/nokogiri/comment.rb,
lib/tdriver/util/xml/parsers/nokogiri/element.rb,
lib/tdriver/util/xml/parsers/nokogiri/nodeset.rb,
lib/tdriver/util/xml/parsers/nokogiri/document.rb,
lib/tdriver/util/xml/parsers/nokogiri/attribute.rb,
lib/tdriver/util/xml/parsers/nokogiri/abstraction.rb

Overview

Copyright © 2010 Nokia Corporation and/or its subsidiary(-ies). All rights reserved. Contact: Nokia Corporation ([email protected])

This file is part of Testability Driver.

If you have questions regarding the use of this file, please contact Nokia at [email protected] .

This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License version 2.1 as published by the Free Software Foundation and appearing in the file LICENSE.LGPL included in the packaging of this file.

Defined Under Namespace

Modules: XML Classes: ArrayHelper, CustomError, DBAccess, DBConnection, DbTypeNotDefinedError, DbTypeNotSupportedError, DynamicAttributeFilter, EmptyFilenameError, EnvironmentHelper, FileHelper, FileNotFoundError, GemHelper, Hooking, KernelHelper, LanguageNotFoundError, Localisation, Logger, LogicalNameNotFoundError, OperatorData, OperatorDataColumnNotFoundError, OperatorDataNotFoundError, Parameter, ParameterFileParseError, ParameterHash, ParameterNotFoundError, ParameterUserAPI, ParameterXmlParseError, Plugin, PluginError, PluginService, Recorder, Retryable, Scripter, SqlConnectError, SqlError, Stats, StringHelper, TDriverCam, TDriverLinuxCam, TDriverWinCam, TableNotFoundError, TemplateNotFoundError, TemplatesFileNotLoaded, UnexpectedVariableTypeError, UserData, UserDataColumnNotFoundError, UserDataNotFoundError, VerifyBlock

Class Method Summary collapse

Class Method Details

.video_alive?(in_target_video, in_fps = 1, in_image_treshold = 4, in_video_treshold = 35, in_verbose = false) ⇒ Boolean

Checks if the target video contains enough activity to be considered active or static.

params

in_target_video: String, Name and path of video file to analyze in_fps: (optional) Numeric, frames to be analyzed per second in_image_treshold: (optional) Numeric, minimum change between two frames for them to be considered different in_video_treshold: (optional) Numeric, Minimum percentage of frames with changes for the video to be considered alive. in_verbose: (optional) Boolean, True for verbose output including target video statistics

Returns:

  • (Boolean)

Raises:

  • (ArgumentError) 


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# File 'lib/tdriver/util/video/video_utils.rb', line 32

def self.video_alive?( in_target_video, in_fps = 1, in_image_treshold = 4, in_video_treshold = 35, in_verbose = false )

  puts "Arguments fps: " << in_fps.inspect << " frame: " << in_image_treshold.inspect << " video: "  << in_video_treshold.inspect if in_verbose

  in_change = in_image_treshold / 100.0
  
  alive_temp_folder = "temp_target_alive"
  
  require 'RMagick'
  
  raise ArgumentError.new( "The FPS argument must be an Interger or a Float, it was a #{ in_fps.class }." ) unless in_fps.kind_of? Numeric
  raise ArgumentError.new( "The frame treshold argument must be an Interger or a Float, it was a #{ in_image_treshold.class }." ) unless in_image_treshold.kind_of? Numeric
  raise ArgumentError.new( "The video treshold argument must be an Interger or a Float, it was a #{ in_video_treshold.class }." ) unless in_video_treshold.kind_of? Numeric
   
  ts = Time.now if in_verbose

  begin
    FileUtils.remove_dir alive_temp_folder
  rescue 
    # failed to remove dir, do nothing
  end
  
  begin
    FileUtils.mkdir_p alive_temp_folder  
  rescue
  
  end
  
  begin
    File.delete 'video_split.log' if File.exist? 'video_split.log'
  rescue
  end
      
  if in_verbose
    system('ffmpeg -v 0 -i '+in_target_video.to_s+' -y -f image2 -r '+in_fps.to_s+' '+alive_temp_folder+'/frame-%05d.png')
  else
    system('ffmpeg 2>video_split.log -v 0 -i '+in_target_video.to_s+' -y -f image2 -r '+in_fps.to_s+' '+alive_temp_folder+'/frame-%05d.png')
  end

  puts "Video processing duration: " << (Time.now - ts).to_s if in_verbose

  t_start = Time.now
  
  im_files = Dir.glob( alive_temp_folder + '/frame-*.png' )

  raise RuntimeError.new( "No video frames found for analysis." ) if im_files.size == 0
  
  d_max = 0.0
  d_min = 1.0

  d_sum = 0.0
  
  dif_count = 0

  pre_obj = Magick::ImageList.new(im_files[0])

  (im_files.size-1).times do | im_index |

    im_file = Magick::ImageList.new(im_files[ im_index ])
    pre_file = pre_obj
     
    dif = pre_file.compare_channel(im_file, Magick::RootMeanSquaredErrorMetric)[1]
     if in_verbose
      d_min = dif unless dif >= d_min
      d_max = dif unless dif <= d_max
      d_sum += dif
    end
    dif_count += 1 if dif > in_change
    puts "Processing image: " << im_file.to_s << " I: " << (im_index+1).to_s  << " C: " << dif.to_s if in_verbose
    
    pre_obj = im_file
         
  end

  if in_verbose

    time_now = Time.now

    puts "Max difference: " << d_max.to_s << "\nMin difference: " << d_min.to_s << "\n"
    puts "Mean difference: " << (d_sum/im_files.size).to_s unless im_files.size == 0
    puts "Count of images exceeding difference tolerance: " << dif_count.to_s

    puts "Fraction of images exceeding difference tolerance: " << (dif_count.to_f/im_files.size).to_s unless im_files.size == 0
    puts "Analysis duration: " << (time_now - t_start).to_s
    puts "Total duration: " << (time_now - ts).to_s
  end

  begin
    FileUtils.remove_dir alive_temp_folder
  rescue 
  end
  
  begin
    File.delete 'video_split.log' if File.exist? 'video_split.log'
  rescue
  end
  
  # Check if enough frames had changes
  return (dif_count.to_f/im_files.size)*100 >= in_video_treshold
    
end