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78 lines
2.6 KiB
Plaintext
78 lines
2.6 KiB
Plaintext
TITLE:: FluidBufSelectEvery
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summary:: Extract every N samples / channels from a buffer
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categories:: Libraries>FluidCorpusManipulation
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related:: Classes/FluidBufSelect
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DESCRIPTION::
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Pick every N frames and / or channels from a buffer, described in terms of independent hop sizes for frames and channels
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CLASSMETHODS::
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private::new1
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METHOD:: process, processBlocking
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Run the process on the given sever, and perfrom code::action:: when done
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ARGUMENT:: server
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The link::Classes/Server:: on which to run
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ARGUMENT:: source
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The link::Classes/Buffer:: to select values from
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ARGUMENT:: startFrame
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The starting point (in samples) from which to copy in the source buffer.
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ARGUMENT:: numFrames
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The duration (in samples) to copy from the source buffer. The default (-1) copies the full lenght of the buffer.
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ARGUMENT:: startChan
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The first channel from which to copy in the source buffer.
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ARGUMENT:: numChans
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The number of channels from which to copy in the source buffer. This parameter will wrap around the number of channels in the source buffer. The default (-1) copies all of the buffer's channel.
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ARGUMENT:: destination
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The link::Classes/Buffer:: to write the selected data to
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ARGUMENT:: frameHop
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Take every `framehop` frames. Default = 1 = all frames (where 2 would be every other frame, etc.)
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ARGUMENT:: channelHop
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Take every `channelhop` channels. Default = 1 = all channels (where 2 would be every other channel, etc.)
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ARGUMENT:: freeWhenDone
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Free the server instance when processing complete. Default true
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ARGUMENT:: action
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Runs when processing is complete
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EXAMPLES::
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code::
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EXAMPLES::
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Didactic
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code::
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//send a known collection where the value of each frame in each channel is encoded
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//chan
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b = Buffer.sendCollection(s,30.collect{|x| x.mod(6) + (x.div(6) * 0.1)},6)
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//check the ranges (thus showing a plotter error...)
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b.plot(separately: true).plotMode_(\points)
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//you can also check the collection itself if in doubt
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b.getToFloatArray(action: {|x|x.round(0.1).postln;});
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//let's make a destination buffer
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c = Buffer(s);
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//using default values, we copy everything:
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FluidBufSelectEvery.process(s,b, destination: c, action: {c.query});
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c.getToFloatArray(action: {|x|x.round(0.1).postln;});
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//more powerful copying, resizing the destination accordingly
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FluidBufSelectEvery.process(s,b, destination: c, frameHop: 2, channelHop: 3, action: {c.query});
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c.getToFloatArray(action: {|x|x.round(0.1).postln;});
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//source buffer boundaries still apply before the hopping selection
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FluidBufSelectEvery.process(s,b, startFrame: 1, numFrames: 3, startChan: 2, numChans: 3, destination: c, frameHop: 1, channelHop: 2, action: {c.query});
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c.getToFloatArray(action: {|x|x.round(0.1).postln;});
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::::
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