Class: Ffmprb::Process::Input

Inherits:
Object
  • Object
show all
Defined in:
lib/ffmprb/process/input.rb,
lib/ffmprb/process/input/cut.rb,
lib/ffmprb/process/input/loud.rb,
lib/ffmprb/process/input/temp.rb,
lib/ffmprb/process/input/cropped.rb,
lib/ffmprb/process/input/looping.rb,
lib/ffmprb/process/input/channeled.rb,
lib/ffmprb/process/input/chain_base.rb

Direct Known Subclasses

ChainBase

Defined Under Namespace

Modules: Temp Classes: ChainBase, Channeled, Cropped, Cut, Looping, Loud

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(io, process, **opts) ⇒ Input

Returns a new instance of Input.



27
28
29
30
31
 
# File 'lib/ffmprb/process/input.rb', line 27

def initialize(io, process, **opts)
  @io = self.class.resolve(io)
  @process = process
  @opts = opts
end

Instance Attribute Details

#io ⇒ Object

Returns the value of attribute io.



24
25
26
 
# File 'lib/ffmprb/process/input.rb', line 24

def io
  @io
end

#process ⇒ Object (readonly)

Returns the value of attribute process.



25
26
27
 
# File 'lib/ffmprb/process/input.rb', line 25

def process
  @process
end

Class Method Details

.resolve(io) ⇒ Object 



9
10
11
12
13
14
15
16
17
18
19
20
 
# File 'lib/ffmprb/process/input.rb', line 9

def resolve(io)
  return io  unless io.is_a? String

  case io
  when /^\/\w/
    File.open(io).tap do |file|
      Ffmprb.logger.warn "Input file does no exist (#{file.path}), will probably fail"  unless file.exist?
    end
  else
    fail Error, "Cannot resolve input: #{io}"
  end
end

Instance Method Details

#audio ⇒ Object 



11
12
13
 
# File 'lib/ffmprb/process/input/channeled.rb', line 11

def audio
  Channeled.new self, video: false
end

#chain_copy(src_input) ⇒ Object 



72
73
74
 
# File 'lib/ffmprb/process/input.rb', line 72

def chain_copy(src_input)
  src_input
end

#channel?(medium) ⇒ Boolean

Returns:

  • (Boolean) 


67
68
69
 
# File 'lib/ffmprb/process/input.rb', line 67

def channel?(medium)
  io.channel? medium
end

#copy(input) ⇒ Object 



34
35
36
 
# File 'lib/ffmprb/process/input.rb', line 34

def copy(input)
  input.chain_copy self
end

#crop(ratio) ⇒ Object

NOTE ratio is either a CROP_PARAMS symbol-ratio hash or a single (global) ratio



7
8
9
 
# File 'lib/ffmprb/process/input/cropped.rb', line 7

def crop(ratio)  # NOTE ratio is either a CROP_PARAMS symbol-ratio hash or a single (global) ratio
  Cropped.new self, crop: ratio
end

#cut(from: 0, to: nil) ⇒ Object 



7
8
9
 
# File 'lib/ffmprb/process/input/cut.rb', line 7

def cut(from: 0, to: nil)
  Cut.new self, from: from, to: to
end

#filters_for(lbl, video:, audio:) ⇒ Object 



49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
 
# File 'lib/ffmprb/process/input.rb', line 49

def filters_for(lbl, video:, audio:)
  in_lbl = process.input_label(self)
  [
    *(if video && channel?(:video)
        if video.resolution && video.fps
          Filter.scale_pad_fps video.resolution, video.fps, "#{in_lbl}:v", "#{lbl}:v"
        elsif video.resolution
          Filter.scale_pad video.resolution, "#{in_lbl}:v", "#{lbl}:v"
        elsif video.fps
          Filter.fps video.fps, "#{in_lbl}:v", "#{lbl}:v"
        else
          Filter.copy "#{in_lbl}:v", "#{lbl}:v"
        end
      end),
    *(audio && channel?(:audio)? Filter.anull("#{in_lbl}:a", "#{lbl}:a"): nil)
  ]
end

#loop(times = 31) ⇒ Object 



7
8
9
 
# File 'lib/ffmprb/process/input/looping.rb', line 7

def loop(times=31)
  Looping.new self, times
end

#mute ⇒ Object 



7
8
9
 
# File 'lib/ffmprb/process/input/loud.rb', line 7

def mute
  Loud.new self, volume: 0
end

#options ⇒ Object 



39
40
41
42
43
44
45
46
47
 
# File 'lib/ffmprb/process/input.rb', line 39

def options
  opts = []
  @opts.map do |name, value|
    next  unless value
    opts << "-#{name}"
    opts << value  unless value == true
  end
  opts << '-i' << io.path
end

#temporise!(extname = nil) ⇒ Object 



7
8
9
10
11
12
 
# File 'lib/ffmprb/process/input/temp.rb', line 7

def temporise!(extname=nil)
  extname ||= io.extname
  self.io = nil
  extend Temp
  @extname = extname
end

#video ⇒ Object 



7
8
9
 
# File 'lib/ffmprb/process/input/channeled.rb', line 7

def video
  Channeled.new self, audio: false
end

#volume(vol) ⇒ Object 



11
12
13
 
# File 'lib/ffmprb/process/input/loud.rb', line 11

def volume(vol)
  Loud.new self, volume: vol
end