class Transcode < XMorph::Base
  CINEDIGM_CONTENT = "cinedigm_content"
  DEFAULT = "default"
  def set_profiles
    self.profiles = {
      CINEDIGM_CONTENT => "ffmpeg -y -i %{IN} -map 0:v:0 -map 0:a:0 -acodec libfdk_aac -profile:a aac_low -ac 2 -ar 48000 -ab 192k -vcodec libx264 -vf 'fps=fps=29.97,scale=1920:1080' -pix_fmt yuv420p -g 13 -bf 2 -profile:v high -vb 30000k -minrate:v 30000k -maxrate:v 30000k -bufsize:v 60000k -muxrate 31000k -x264opts nal-hrd=cbr -pes_payload_size 16 -streamid 0:2064 -streamid 1:2068 %{OUT} 2>&1",
      DEFAULT => "ffmpeg -y -i %{IN} -vcodec copy -vbsf h264_mp4toannexb -acodec copy -map 0:v -streamid 0:2064 -map 0:a -streamid 1:2068  -metadata:s:a:0 language=ENG %{OUT} 2>&1",
    }
  end

  def video_checks
    {
      ALLOWED_ASPECT_RATIO => ["16:9"],
      ALLOWED_HEIGHT => [1080],
      ALLOWED_WIDTH => [1920], 
      ALLOWED_FRAME_RATE => IGNORE,
      ALLOWED_VIDEO_BIT_RATE => IGNORE, #Mbps
      ALLOWED_SCAN_TYPE => IGNORE, #all downcased
    }
  end

  def audio_checks
    {
      PRESENCE_OF_AUDIO_TRACK => VALIDATE,
      ALLOWED_NUMBER_OF_AUDIO_TRACKS => [1],
      ALLOWED_AUDIO_CODECS => ["aac", "mpeg-audio"],
      ALLOWED_AUDIO_BIT_RATE => IGNORE,
      ALLOWED_NUMBER_OF_AUDIO_CHANNELS => [2],
    }
  end

  #profiles are classified based on fps and bit rate.
  def set_profile_name
    self.profile_name = nil
    self.error = nil
    mediainfo = self.mediainfo_output
    video_info = mediainfo["Video"]
    fps = video_info["Frame_rate"]
    bit_rate = video_info["Bit_rate"] || video_info["Nominal_bit_rate"]
    
    fps = video_info["Frame_rate"].match("29.97")
    bit_rate = bit_rate.split(" ")[0].to_f
    if !fps || bit_rate < 30;
      self.profile_name = CINEDIGM_CONTENT
    else
      self.profile_name = DEFAULT
    end
    XMorph::Base.logger.debug("XMorph#get_profile#tyt: using profile #{self.profile_name}") unless self.profile_name.nil?
    return true
  end

end