Class: SippyCup::Media::DTMFPayload

Inherits:
RTPPayload show all
Defined in:
lib/sippy_cup/media/dtmf_payload.rb

Constant Summary collapse

RTP_PAYLOAD_ID = 
101
PTIME =

in milliseconds

20
TIMESTAMP_INTERVAL = 
160
END_OF_EVENT = 
1 << 7
DTMF = 
%w{0 1 2 3 4 5 6 7 8 9 * # A B C D}.freeze

Instance Attribute Summary collapse

Attributes inherited from RTPPayload

#header

Instance Method Summary collapse

Methods inherited from RTPPayload

#method_missing, #to_bytes

Constructor Details

#initialize(digit, opts = {}) ⇒ DTMFPayload

Returns a new instance of DTMFPayload.



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# File 'lib/sippy_cup/media/dtmf_payload.rb', line 14

def initialize(digit, opts = {})
  super RTP_PAYLOAD_ID
  @flags = 0
  @digit = atoi digit
  @ptime = opts[:ptime] || PTIME

  volume opts[:volume] || 10
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method in the class SippyCup::Media::RTPPayload

Instance Attribute Details

#ptime ⇒ Object

Returns the value of attribute ptime.



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# File 'lib/sippy_cup/media/dtmf_payload.rb', line 12

def ptime
  @ptime
end

Instance Method Details

#atoi(digit) ⇒ Object 



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# File 'lib/sippy_cup/media/dtmf_payload.rb', line 31

def atoi(digit)
  DTMF.index digit.to_s
end

#end_of_event ⇒ Object 



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# File 'lib/sippy_cup/media/dtmf_payload.rb', line 41

def end_of_event
  @flags & END_OF_EVENT
end

#end_of_event=(bool) ⇒ Object 



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# File 'lib/sippy_cup/media/dtmf_payload.rb', line 23

def end_of_event=(bool)
  if bool
    @flags |= END_OF_EVENT
  else
    @flags &= (0xf - END_OF_EVENT)
  end
end

#media ⇒ Object 



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# File 'lib/sippy_cup/media/dtmf_payload.rb', line 45

def media
  [@digit, @flags, timestamp_interval].pack 'CCn'
end

#timestamp_interval ⇒ Object 



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# File 'lib/sippy_cup/media/dtmf_payload.rb', line 49

def timestamp_interval
  TIMESTAMP_INTERVAL
end

#volume(value) ⇒ Object 



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# File 'lib/sippy_cup/media/dtmf_payload.rb', line 35

def volume(value)
  value = [value, 0x3f].min # Cap to 6 bits
  @flags &= 0xc0 # zero out old volume
  @flags += value
end