Package timeside :: Module core :: Class Processor

Class Processor

         object --+    
                  |    
component.Component --+
                      |
                     Processor

Known Subclasses:

Base component class of all processors


Attributes:
          parents :  List of parent Processors that must be processed
                     before the current Processor
          pipe :     The current ProcessPipe in which the Processor will run

Nested Classes

[hide private]

__metaclass__
Metaclass of the Processor class, used mainly for ensuring that processor id's are wellformed and unique

Instance Methods

[hide private]

__init__(self)
x.__init__(...) initializes x; see help(type(x)) for signature

source code

setup(self, channels=None, samplerate=None, blocksize=None, totalframes=None)
Allocate internal resources and reset state, so that this processor is ready for a new run.

source code

channels(self)
Number of channels in the data returned by process().

source code

samplerate(self)
Samplerate of the data returned by process().

source code

blocksize(self)
The total number of frames that this processor can output for each step in the pipeline, or None if the number is unknown.

source code

totalframes(self)
The total number of frames that this processor will output, or None if the number is unknown.

source code

process(self, frames, eod)
Process input frames and return a (output_frames, eod) tuple.

source code

post_process(self)
Post-Process data after processign the input frames with process()

source code

release(self)
Release resources owned by this processor.

source code

mediainfo(self)
Information about the media object uri start duration

source code

uuid(self)
Return the UUID of the processor

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__del__(self)

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__or__(self, other)

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Inherited from object: __delattr__, __format__, __getattribute__, __hash__, __new__, __reduce__, __reduce_ex__, __repr__, __setattr__, __sizeof__, __str__, __subclasshook__

Properties

[hide private]

Inherited from object: __class__

Method Details

[hide private]

init(self)
(Constructor)

source code

x.__init__(...) initializes x; see help(type(x)) for signature

Overrides: object.__init__: (inherited documentation)

setup(self, channels=None, samplerate=None, blocksize=None, totalframes=None)

source code

Allocate internal resources and reset state, so that this processor is ready for a new run.

The channels, samplerate and/or blocksize and/or totalframes arguments may be required by processors which accept input. An error will occur if any of these arguments is passed to an output-only processor such as a decoder.

Decorators:

@interfacedoc

channels(self)

source code

Number of channels in the data returned by process(). May be different from the number of channels passed to setup()

Decorators:

@interfacedoc

samplerate(self)

source code

Samplerate of the data returned by process(). May be different from the samplerate passed to setup()

Decorators:

@interfacedoc

blocksize(self)

source code

The total number of frames that this processor can output for each step in the pipeline, or None if the number is unknown.

Decorators:

@interfacedoc

totalframes(self)

source code

The total number of frames that this processor will output, or None if the number is unknown.

Decorators:

@interfacedoc

process(self, frames, eod)

source code

Process input frames and return a (output_frames, eod) tuple. Both input and output frames are 2D numpy arrays, where columns are channels, and containing an undetermined number of frames. eod=True means that the end-of-data has been reached.

Output-only processors (such as decoders) will raise an exception if the frames argument is not None. All processors (even encoders) return data, even if that means returning the input unchanged.

Warning: it is required to call setup() before this method.

Decorators:

@interfacedoc

post_process(self)

source code

Post-Process data after processign the input frames with process()

Processors such as analyzers will produce Results during the Post-Process

Decorators:

@interfacedoc

release(self)

source code

Release resources owned by this processor. The processor cannot be used anymore after calling this method.

Decorators:

@interfacedoc

mediainfo(self)

source code

Information about the media object uri start duration

Decorators:

@interfacedoc

uuid(self)

source code

Return the UUID of the processor

Decorators:

@interfacedoc

Class Processor

__init__(self) (Constructor)

setup(self, channels=None, samplerate=None, blocksize=None, totalframes=None)

channels(self)

samplerate(self)

blocksize(self)

totalframes(self)

process(self, frames, eod)

post_process(self)

release(self)

mediainfo(self)

uuid(self)

init(self)
(Constructor)