diff --git a/docs/reference/pedalboard.io.html b/docs/reference/pedalboard.io.html index 8d3ba623..977c792b 100644 --- a/docs/reference/pedalboard.io.html +++ b/docs/reference/pedalboard.io.html @@ -981,6 +981,29 @@

The pedalboard. write(samples: ndarray) → None#

Encode an array of audio data and write it to this file. The number of channels in the array must match the number of channels used to open the file. The array may contain audio in any shape. If the file’s bit depth or format does not match the provided data type, the audio will be automatically converted.

Arrays of type int8, int16, int32, float32, and float64 are supported. If an array of an unsupported dtype is provided, a TypeError will be raised.

+
+

Warning

+

If an array of shape (num_channels, num_channels) is passed to this method before any other audio data is provided, an exception will be thrown, as the method will not be able to infer which dimension of the input corresponds to the number of channels and which dimension corresponds to the number of samples.

+

To avoid this, first call this method with an array where the number of samples does not match the number of channels.

+

The channel layout from the most recently provided input will be cached on the WritableAudioFile object and will be used if necessary to disambiguate the array layout:

+
with AudioFile("my_file.mp3", "w", 44100, num_channels=2) as f:
+    # This will throw an exception:
+    f.write(np.zeros((2, 2)))
+    # But this will work:
+    f.write(np.zeros((2, 1)))
+    # And now `f` expects an input shape of (num_channels, num_samples), so this works:
+    f.write(np.zeros((2, 2)))
+
+# Also an option: pass (0, num_channels) or (num_channels, 0) first
+# to hint that the input will be in that shape without writing anything:
+with AudioFile("my_file.mp3", "w", 44100, num_channels=2) as f:
+    # Pass a hint, but write nothing:
+    f.write(np.zeros((2, 0)))
+    # And now `f` expects an input shape of (num_channels, num_samples), so this works:
+    f.write(np.zeros((2, 2)))
+
+
+
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a guitar-style pedalboard": [[1, "making-a-guitar-style-pedalboard"]], "Using VST3\u00ae or Audio Unit instrument and effect plugins": [[1, "using-vst3-or-audio-unit-instrument-and-effect-plugins"]], "Creating parallel effects chains": [[1, "creating-parallel-effects-chains"]], "Running Pedalboard on Live Audio": [[1, "running-pedalboard-on-live-audio"]], "Using Pedalboard in tf.data Pipelines": [[1, "using-pedalboard-in-tf-data-pipelines"]], "Frequently Asked Questions": [[2, "frequently-asked-questions"]], "Can Pedalboard be used with live (real-time) audio?": [[2, "can-pedalboard-be-used-with-live-real-time-audio"]], "Does Pedalboard support changing a plugin\u2019s parameters over time?": [[2, "does-pedalboard-support-changing-a-plugin-s-parameters-over-time"]], "Can Pedalboard be used with VST instruments, instead of effects?": [[2, "can-pedalboard-be-used-with-vst-instruments-instead-of-effects"]], "Can Pedalboard plugins accept MIDI?": [[2, "can-pedalboard-plugins-accept-midi"]], "Features": [[3, "features"]], "Installation": [[3, "installation"]], "Compatibility": [[3, "compatibility"]], "Reference": [[3, "reference"]], "Documentation": [[3, "documentation"]], "Pedalboard Internals": [[4, "pedalboard-internals"]], "Adding new built-in Pedalboard plugins": [[4, "adding-new-built-in-pedalboard-plugins"]], "Design considerations": [[4, "design-considerations"]], "License": [[5, "license"]], "The pedalboard API": [[6, "the-pedalboard-api"]], "The pedalboard.io API": [[7, "the-pedalboard-io-api"]]}, "indexentries": {"audioprocessorparameter (class in pedalboard)": [[6, "pedalboard.AudioProcessorParameter"]], "audiounitplugin (class in pedalboard)": [[6, "pedalboard.AudioUnitPlugin"]], "bpf12 (pedalboard.ladderfilter.mode attribute)": [[6, "pedalboard.LadderFilter.Mode.BPF12"]], "bpf24 (pedalboard.ladderfilter.mode attribute)": [[6, "pedalboard.LadderFilter.Mode.BPF24"]], "bitcrush (class in pedalboard)": [[6, 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pedalboard": [[1, "making-a-guitar-style-pedalboard"]], "Using VST3\u00ae or Audio Unit instrument and effect plugins": [[1, "using-vst3-or-audio-unit-instrument-and-effect-plugins"]], "Creating parallel effects chains": [[1, "creating-parallel-effects-chains"]], "Running Pedalboard on Live Audio": [[1, "running-pedalboard-on-live-audio"]], "Using Pedalboard in tf.data Pipelines": [[1, "using-pedalboard-in-tf-data-pipelines"]], "Frequently Asked Questions": [[2, "frequently-asked-questions"]], "Can Pedalboard be used with live (real-time) audio?": [[2, "can-pedalboard-be-used-with-live-real-time-audio"]], "Does Pedalboard support changing a plugin\u2019s parameters over time?": [[2, "does-pedalboard-support-changing-a-plugin-s-parameters-over-time"]], "Can Pedalboard be used with VST instruments, instead of effects?": [[2, "can-pedalboard-be-used-with-vst-instruments-instead-of-effects"]], "Can Pedalboard plugins accept MIDI?": [[2, "can-pedalboard-plugins-accept-midi"]], "Features": 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attribute)": [[6, "pedalboard.Resample.Quality.CatmullRom"]], "chain (class in pedalboard)": [[6, "pedalboard.Chain"]], "chorus (class in pedalboard)": [[6, "pedalboard.Chorus"]], "clipping (class in pedalboard)": [[6, "pedalboard.Clipping"]], "compressor (class in pedalboard)": [[6, "pedalboard.Compressor"]], "convolution (class in pedalboard)": [[6, "pedalboard.Convolution"]], "delay (class in pedalboard)": [[6, "pedalboard.Delay"]], "distortion (class in pedalboard)": [[6, "pedalboard.Distortion"]], "externalplugin (class in pedalboard)": [[6, "pedalboard.ExternalPlugin"]], "gsmfullratecompressor (class in pedalboard)": [[6, "pedalboard.GSMFullRateCompressor"]], "gain (class in pedalboard)": [[6, "pedalboard.Gain"]], "hpf12 (pedalboard.ladderfilter.mode attribute)": [[6, "pedalboard.LadderFilter.Mode.HPF12"]], "hpf24 (pedalboard.ladderfilter.mode attribute)": [[6, "pedalboard.LadderFilter.Mode.HPF24"]], "highshelffilter (class in pedalboard)": [[6, "pedalboard.HighShelfFilter"]], "highpassfilter (class in pedalboard)": [[6, "pedalboard.HighpassFilter"]], "iirfilter (class in pedalboard)": [[6, "pedalboard.IIRFilter"]], "invert (class in pedalboard)": [[6, "pedalboard.Invert"]], "lpf12 (pedalboard.ladderfilter.mode attribute)": [[6, "pedalboard.LadderFilter.Mode.LPF12"]], "lpf24 (pedalboard.ladderfilter.mode attribute)": [[6, "pedalboard.LadderFilter.Mode.LPF24"]], "ladderfilter (class in pedalboard)": [[6, "pedalboard.LadderFilter"]], "ladderfilter.mode (class in pedalboard)": [[6, "pedalboard.LadderFilter.Mode"]], "lagrange (pedalboard.resample.quality attribute)": [[6, "pedalboard.Resample.Quality.Lagrange"]], "limiter (class in pedalboard)": [[6, "pedalboard.Limiter"]], "linear (pedalboard.resample.quality attribute)": [[6, "pedalboard.Resample.Quality.Linear"]], "lowshelffilter (class in pedalboard)": [[6, "pedalboard.LowShelfFilter"]], "lowpassfilter (class in pedalboard)": [[6, "pedalboard.LowpassFilter"]], "mp3compressor (class in pedalboard)": [[6, "pedalboard.MP3Compressor"]], "mix (class in pedalboard)": [[6, "pedalboard.Mix"]], "noisegate (class in pedalboard)": [[6, "pedalboard.NoiseGate"]], "peakfilter (class in pedalboard)": [[6, "pedalboard.PeakFilter"]], "pedalboard (class in pedalboard)": [[6, "pedalboard.Pedalboard"]], "phaser (class in pedalboard)": [[6, "pedalboard.Phaser"]], "pitchshift (class in pedalboard)": [[6, "pedalboard.PitchShift"]], "plugin (class in pedalboard)": [[6, "pedalboard.Plugin"]], "plugincontainer (class in pedalboard)": [[6, "pedalboard.PluginContainer"]], "resample (class in pedalboard)": [[6, "pedalboard.Resample"]], "resample.quality (class in pedalboard)": [[6, "pedalboard.Resample.Quality"]], "reverb (class in pedalboard)": [[6, "pedalboard.Reverb"]], "vst3plugin (class in pedalboard)": [[6, "pedalboard.VST3Plugin"]], "windowedsinc (pedalboard.resample.quality attribute)": [[6, "pedalboard.Resample.Quality.WindowedSinc"]], "zeroorderhold (pedalboard.resample.quality attribute)": [[6, "pedalboard.Resample.Quality.ZeroOrderHold"]], "__call__() (pedalboard.audiounitplugin method)": [[6, "pedalboard.AudioUnitPlugin.__call__"]], "__call__() (pedalboard.bitcrush method)": [[6, "pedalboard.Bitcrush.__call__"]], "__call__() (pedalboard.chain method)": [[6, "pedalboard.Chain.__call__"]], "__call__() (pedalboard.chorus method)": [[6, "pedalboard.Chorus.__call__"]], "__call__() (pedalboard.clipping method)": [[6, "pedalboard.Clipping.__call__"]], "__call__() (pedalboard.compressor method)": [[6, "pedalboard.Compressor.__call__"]], "__call__() (pedalboard.convolution method)": [[6, "pedalboard.Convolution.__call__"]], "__call__() (pedalboard.delay method)": [[6, "pedalboard.Delay.__call__"]], "__call__() (pedalboard.distortion method)": [[6, "pedalboard.Distortion.__call__"]], "__call__() (pedalboard.externalplugin method)": [[6, "pedalboard.ExternalPlugin.__call__"]], "__call__() (pedalboard.gsmfullratecompressor method)": [[6, "pedalboard.GSMFullRateCompressor.__call__"]], "__call__() (pedalboard.gain method)": [[6, "pedalboard.Gain.__call__"]], "__call__() (pedalboard.highshelffilter method)": [[6, "pedalboard.HighShelfFilter.__call__"]], "__call__() (pedalboard.highpassfilter method)": [[6, "pedalboard.HighpassFilter.__call__"]], "__call__() (pedalboard.iirfilter method)": [[6, "pedalboard.IIRFilter.__call__"]], "__call__() (pedalboard.invert method)": [[6, "pedalboard.Invert.__call__"]], "__call__() (pedalboard.ladderfilter method)": [[6, "pedalboard.LadderFilter.__call__"]], "__call__() (pedalboard.limiter method)": [[6, "pedalboard.Limiter.__call__"]], "__call__() (pedalboard.lowshelffilter method)": [[6, "pedalboard.LowShelfFilter.__call__"]], "__call__() (pedalboard.lowpassfilter method)": [[6, "pedalboard.LowpassFilter.__call__"]], "__call__() (pedalboard.mp3compressor method)": [[6, "pedalboard.MP3Compressor.__call__"]], "__call__() (pedalboard.mix method)": [[6, "pedalboard.Mix.__call__"]], "__call__() (pedalboard.noisegate method)": [[6, "pedalboard.NoiseGate.__call__"]], "__call__() (pedalboard.peakfilter method)": [[6, "pedalboard.PeakFilter.__call__"]], "__call__() (pedalboard.pedalboard method)": [[6, "pedalboard.Pedalboard.__call__"]], "__call__() (pedalboard.phaser method)": [[6, "pedalboard.Phaser.__call__"]], "__call__() (pedalboard.pitchshift method)": [[6, "pedalboard.PitchShift.__call__"]], "__call__() (pedalboard.plugin method)": [[6, "pedalboard.Plugin.__call__"]], "__call__() (pedalboard.plugincontainer method)": [[6, "pedalboard.PluginContainer.__call__"]], "__call__() (pedalboard.resample method)": [[6, "pedalboard.Resample.__call__"]], "__call__() (pedalboard.reverb method)": [[6, "pedalboard.Reverb.__call__"]], "__call__() (pedalboard.vst3plugin method)": [[6, "pedalboard.VST3Plugin.__call__"]], "append() (pedalboard.chain method)": [[6, "pedalboard.Chain.append"]], "append() (pedalboard.mix method)": [[6, "pedalboard.Mix.append"]], "append() (pedalboard.pedalboard method)": [[6, "pedalboard.Pedalboard.append"]], "append() (pedalboard.plugincontainer method)": [[6, "pedalboard.PluginContainer.append"]], "bit_depth (pedalboard.bitcrush property)": [[6, "pedalboard.Bitcrush.bit_depth"]], "category (pedalboard.audiounitplugin property)": [[6, "pedalboard.AudioUnitPlugin.category"]], "category (pedalboard.vst3plugin property)": [[6, "pedalboard.VST3Plugin.category"]], "descriptive_name (pedalboard.audiounitplugin property)": [[6, "pedalboard.AudioUnitPlugin.descriptive_name"]], "descriptive_name (pedalboard.vst3plugin property)": [[6, "pedalboard.VST3Plugin.descriptive_name"]], "get_plugin_names_for_file() (pedalboard.audiounitplugin static method)": [[6, "pedalboard.AudioUnitPlugin.get_plugin_names_for_file"]], "get_plugin_names_for_file() (pedalboard.vst3plugin static method)": [[6, "pedalboard.VST3Plugin.get_plugin_names_for_file"]], "has_shared_container (pedalboard.audiounitplugin property)": [[6, "pedalboard.AudioUnitPlugin.has_shared_container"]], "has_shared_container (pedalboard.vst3plugin property)": [[6, "pedalboard.VST3Plugin.has_shared_container"]], "identifier (pedalboard.audiounitplugin property)": [[6, "pedalboard.AudioUnitPlugin.identifier"]], "identifier (pedalboard.vst3plugin property)": [[6, "pedalboard.VST3Plugin.identifier"]], "insert() (pedalboard.chain method)": [[6, "pedalboard.Chain.insert"]], "insert() (pedalboard.mix method)": [[6, "pedalboard.Mix.insert"]], "insert() (pedalboard.pedalboard method)": [[6, "pedalboard.Pedalboard.insert"]], "insert() (pedalboard.plugincontainer method)": [[6, "pedalboard.PluginContainer.insert"]], "is_effect (pedalboard.audiounitplugin property)": [[6, "pedalboard.AudioUnitPlugin.is_effect"]], "is_effect (pedalboard.bitcrush property)": [[6, "pedalboard.Bitcrush.is_effect"]], "is_effect (pedalboard.chain property)": [[6, "pedalboard.Chain.is_effect"]], "is_effect (pedalboard.chorus property)": [[6, "pedalboard.Chorus.is_effect"]], "is_effect (pedalboard.clipping property)": [[6, "pedalboard.Clipping.is_effect"]], "is_effect (pedalboard.compressor property)": [[6, "pedalboard.Compressor.is_effect"]], "is_effect (pedalboard.convolution property)": [[6, "pedalboard.Convolution.is_effect"]], "is_effect (pedalboard.delay property)": [[6, "pedalboard.Delay.is_effect"]], "is_effect (pedalboard.distortion property)": [[6, "pedalboard.Distortion.is_effect"]], "is_effect (pedalboard.externalplugin property)": [[6, "pedalboard.ExternalPlugin.is_effect"]], "is_effect (pedalboard.gsmfullratecompressor property)": [[6, "pedalboard.GSMFullRateCompressor.is_effect"]], "is_effect (pedalboard.gain property)": [[6, "pedalboard.Gain.is_effect"]], "is_effect (pedalboard.highshelffilter property)": [[6, "pedalboard.HighShelfFilter.is_effect"]], "is_effect (pedalboard.highpassfilter property)": [[6, "pedalboard.HighpassFilter.is_effect"]], "is_effect (pedalboard.iirfilter property)": [[6, "pedalboard.IIRFilter.is_effect"]], "is_effect (pedalboard.invert property)": [[6, "pedalboard.Invert.is_effect"]], "is_effect (pedalboard.ladderfilter property)": [[6, "pedalboard.LadderFilter.is_effect"]], "is_effect (pedalboard.limiter property)": [[6, "pedalboard.Limiter.is_effect"]], "is_effect (pedalboard.lowshelffilter property)": [[6, "pedalboard.LowShelfFilter.is_effect"]], "is_effect (pedalboard.lowpassfilter property)": [[6, "pedalboard.LowpassFilter.is_effect"]], "is_effect (pedalboard.mp3compressor property)": [[6, "pedalboard.MP3Compressor.is_effect"]], "is_effect (pedalboard.mix property)": [[6, "pedalboard.Mix.is_effect"]], "is_effect (pedalboard.noisegate property)": [[6, "pedalboard.NoiseGate.is_effect"]], "is_effect (pedalboard.peakfilter property)": [[6, "pedalboard.PeakFilter.is_effect"]], "is_effect (pedalboard.pedalboard property)": [[6, "pedalboard.Pedalboard.is_effect"]], "is_effect (pedalboard.phaser property)": [[6, "pedalboard.Phaser.is_effect"]], "is_effect (pedalboard.pitchshift property)": [[6, "pedalboard.PitchShift.is_effect"]], "is_effect (pedalboard.plugin property)": [[6, "pedalboard.Plugin.is_effect"]], "is_effect (pedalboard.plugincontainer property)": [[6, "pedalboard.PluginContainer.is_effect"]], "is_effect (pedalboard.resample property)": [[6, "pedalboard.Resample.is_effect"]], "is_effect (pedalboard.reverb property)": [[6, "pedalboard.Reverb.is_effect"]], "is_effect (pedalboard.vst3plugin property)": [[6, "pedalboard.VST3Plugin.is_effect"]], "is_instrument (pedalboard.audiounitplugin property)": [[6, "pedalboard.AudioUnitPlugin.is_instrument"]], "is_instrument (pedalboard.bitcrush property)": [[6, "pedalboard.Bitcrush.is_instrument"]], "is_instrument (pedalboard.chain property)": [[6, "pedalboard.Chain.is_instrument"]], "is_instrument (pedalboard.chorus property)": [[6, "pedalboard.Chorus.is_instrument"]], "is_instrument (pedalboard.clipping property)": [[6, "pedalboard.Clipping.is_instrument"]], "is_instrument (pedalboard.compressor property)": [[6, "pedalboard.Compressor.is_instrument"]], "is_instrument (pedalboard.convolution property)": [[6, "pedalboard.Convolution.is_instrument"]], "is_instrument (pedalboard.delay property)": [[6, "pedalboard.Delay.is_instrument"]], "is_instrument (pedalboard.distortion property)": [[6, "pedalboard.Distortion.is_instrument"]], "is_instrument (pedalboard.externalplugin property)": [[6, "pedalboard.ExternalPlugin.is_instrument"]], "is_instrument (pedalboard.gsmfullratecompressor property)": [[6, "pedalboard.GSMFullRateCompressor.is_instrument"]], "is_instrument (pedalboard.gain property)": [[6, "pedalboard.Gain.is_instrument"]], "is_instrument (pedalboard.highshelffilter property)": [[6, "pedalboard.HighShelfFilter.is_instrument"]], "is_instrument (pedalboard.highpassfilter property)": [[6, "pedalboard.HighpassFilter.is_instrument"]], "is_instrument (pedalboard.iirfilter property)": [[6, "pedalboard.IIRFilter.is_instrument"]], "is_instrument (pedalboard.invert property)": [[6, "pedalboard.Invert.is_instrument"]], "is_instrument (pedalboard.ladderfilter property)": [[6, "pedalboard.LadderFilter.is_instrument"]], "is_instrument (pedalboard.limiter property)": [[6, "pedalboard.Limiter.is_instrument"]], "is_instrument (pedalboard.lowshelffilter property)": [[6, "pedalboard.LowShelfFilter.is_instrument"]], "is_instrument (pedalboard.lowpassfilter property)": [[6, "pedalboard.LowpassFilter.is_instrument"]], "is_instrument (pedalboard.mp3compressor property)": [[6, "pedalboard.MP3Compressor.is_instrument"]], "is_instrument (pedalboard.mix property)": [[6, "pedalboard.Mix.is_instrument"]], "is_instrument (pedalboard.noisegate property)": [[6, "pedalboard.NoiseGate.is_instrument"]], "is_instrument (pedalboard.peakfilter property)": [[6, "pedalboard.PeakFilter.is_instrument"]], "is_instrument (pedalboard.pedalboard property)": [[6, "pedalboard.Pedalboard.is_instrument"]], "is_instrument (pedalboard.phaser property)": [[6, "pedalboard.Phaser.is_instrument"]], "is_instrument (pedalboard.pitchshift property)": [[6, "pedalboard.PitchShift.is_instrument"]], "is_instrument (pedalboard.plugin property)": [[6, "pedalboard.Plugin.is_instrument"]], "is_instrument (pedalboard.plugincontainer property)": [[6, "pedalboard.PluginContainer.is_instrument"]], "is_instrument (pedalboard.resample property)": [[6, "pedalboard.Resample.is_instrument"]], "is_instrument (pedalboard.reverb property)": [[6, "pedalboard.Reverb.is_instrument"]], "is_instrument (pedalboard.vst3plugin property)": [[6, "pedalboard.VST3Plugin.is_instrument"]], "label (pedalboard.audioprocessorparameter property)": [[6, "pedalboard.AudioProcessorParameter.label"]], "load_plugin() (in module pedalboard)": [[6, "pedalboard.load_plugin"]], "load_preset() (pedalboard.vst3plugin method)": [[6, "pedalboard.VST3Plugin.load_preset"]], "manufacturer_name (pedalboard.audiounitplugin property)": [[6, "pedalboard.AudioUnitPlugin.manufacturer_name"]], "manufacturer_name (pedalboard.vst3plugin property)": [[6, "pedalboard.VST3Plugin.manufacturer_name"]], "module": [[6, "module-pedalboard"], [7, "module-pedalboard.io"]], "name (pedalboard.audiounitplugin property)": [[6, "pedalboard.AudioUnitPlugin.name"]], "name (pedalboard.vst3plugin property)": [[6, "pedalboard.VST3Plugin.name"]], "pedalboard": [[6, "module-pedalboard"]], "process() (pedalboard.audiounitplugin method)": [[6, "pedalboard.AudioUnitPlugin.process"]], "process() (pedalboard.bitcrush method)": [[6, "pedalboard.Bitcrush.process"]], "process() (pedalboard.chain method)": [[6, "pedalboard.Chain.process"]], "process() (pedalboard.chorus method)": [[6, "pedalboard.Chorus.process"]], "process() (pedalboard.clipping method)": [[6, "pedalboard.Clipping.process"]], "process() (pedalboard.compressor method)": [[6, "pedalboard.Compressor.process"]], "process() (pedalboard.convolution method)": [[6, "pedalboard.Convolution.process"]], "process() (pedalboard.delay method)": [[6, "pedalboard.Delay.process"]], "process() (pedalboard.distortion method)": [[6, "pedalboard.Distortion.process"]], "process() (pedalboard.externalplugin method)": [[6, "pedalboard.ExternalPlugin.process"]], "process() (pedalboard.gsmfullratecompressor method)": [[6, "pedalboard.GSMFullRateCompressor.process"]], "process() (pedalboard.gain method)": [[6, "pedalboard.Gain.process"]], "process() (pedalboard.highshelffilter method)": [[6, "pedalboard.HighShelfFilter.process"]], "process() (pedalboard.highpassfilter method)": [[6, "pedalboard.HighpassFilter.process"]], "process() (pedalboard.iirfilter method)": [[6, "pedalboard.IIRFilter.process"]], "process() (pedalboard.invert method)": [[6, "pedalboard.Invert.process"]], "process() (pedalboard.ladderfilter method)": [[6, "pedalboard.LadderFilter.process"]], "process() (pedalboard.limiter method)": [[6, "pedalboard.Limiter.process"]], "process() (pedalboard.lowshelffilter method)": [[6, "pedalboard.LowShelfFilter.process"]], "process() (pedalboard.lowpassfilter method)": [[6, "pedalboard.LowpassFilter.process"]], "process() (pedalboard.mp3compressor method)": [[6, "pedalboard.MP3Compressor.process"]], "process() (pedalboard.mix method)": [[6, "pedalboard.Mix.process"]], "process() (pedalboard.noisegate method)": [[6, "pedalboard.NoiseGate.process"]], "process() (pedalboard.peakfilter method)": [[6, "pedalboard.PeakFilter.process"]], "process() (pedalboard.pedalboard method)": [[6, "pedalboard.Pedalboard.process"]], "process() (pedalboard.phaser method)": [[6, "pedalboard.Phaser.process"]], "process() (pedalboard.pitchshift method)": [[6, "pedalboard.PitchShift.process"]], "process() (pedalboard.plugin method)": [[6, "pedalboard.Plugin.process"]], "process() (pedalboard.plugincontainer method)": [[6, "pedalboard.PluginContainer.process"]], "process() (pedalboard.resample method)": [[6, "pedalboard.Resample.process"]], "process() (pedalboard.reverb method)": [[6, "pedalboard.Reverb.process"]], "process() (pedalboard.vst3plugin method)": [[6, "pedalboard.VST3Plugin.process"]], "quality (pedalboard.resample property)": [[6, "pedalboard.Resample.quality"]], "rate_hz (pedalboard.chorus property)": [[6, "pedalboard.Chorus.rate_hz"]], "raw_state (pedalboard.audiounitplugin property)": [[6, "pedalboard.AudioUnitPlugin.raw_state"]], "raw_state (pedalboard.vst3plugin property)": [[6, "pedalboard.VST3Plugin.raw_state"]], "remove() (pedalboard.chain method)": [[6, "pedalboard.Chain.remove"]], "remove() (pedalboard.mix method)": [[6, "pedalboard.Mix.remove"]], "remove() (pedalboard.pedalboard method)": [[6, "pedalboard.Pedalboard.remove"]], "remove() (pedalboard.plugincontainer method)": [[6, "pedalboard.PluginContainer.remove"]], "reset() (pedalboard.audiounitplugin method)": [[6, "pedalboard.AudioUnitPlugin.reset"]], "reset() (pedalboard.bitcrush method)": [[6, "pedalboard.Bitcrush.reset"]], "reset() (pedalboard.chain method)": [[6, "pedalboard.Chain.reset"]], "reset() (pedalboard.chorus method)": [[6, "pedalboard.Chorus.reset"]], "reset() (pedalboard.clipping method)": [[6, "pedalboard.Clipping.reset"]], "reset() (pedalboard.compressor method)": [[6, "pedalboard.Compressor.reset"]], "reset() (pedalboard.convolution method)": [[6, "pedalboard.Convolution.reset"]], "reset() (pedalboard.delay method)": [[6, "pedalboard.Delay.reset"]], "reset() (pedalboard.distortion method)": [[6, "pedalboard.Distortion.reset"]], "reset() (pedalboard.externalplugin method)": [[6, "pedalboard.ExternalPlugin.reset"]], "reset() (pedalboard.gsmfullratecompressor method)": [[6, "pedalboard.GSMFullRateCompressor.reset"]], "reset() (pedalboard.gain method)": [[6, "pedalboard.Gain.reset"]], "reset() (pedalboard.highshelffilter method)": [[6, "pedalboard.HighShelfFilter.reset"]], "reset() (pedalboard.highpassfilter method)": [[6, "pedalboard.HighpassFilter.reset"]], "reset() (pedalboard.iirfilter method)": [[6, "pedalboard.IIRFilter.reset"]], "reset() (pedalboard.invert method)": [[6, "pedalboard.Invert.reset"]], "reset() (pedalboard.ladderfilter method)": [[6, "pedalboard.LadderFilter.reset"]], "reset() (pedalboard.limiter method)": [[6, "pedalboard.Limiter.reset"]], "reset() (pedalboard.lowshelffilter method)": [[6, "pedalboard.LowShelfFilter.reset"]], "reset() (pedalboard.lowpassfilter method)": [[6, "pedalboard.LowpassFilter.reset"]], "reset() (pedalboard.mp3compressor method)": [[6, "pedalboard.MP3Compressor.reset"]], "reset() (pedalboard.mix method)": [[6, "pedalboard.Mix.reset"]], "reset() (pedalboard.noisegate method)": [[6, "pedalboard.NoiseGate.reset"]], "reset() (pedalboard.peakfilter method)": [[6, "pedalboard.PeakFilter.reset"]], "reset() (pedalboard.pedalboard method)": [[6, "pedalboard.Pedalboard.reset"]], "reset() (pedalboard.phaser method)": [[6, "pedalboard.Phaser.reset"]], "reset() (pedalboard.pitchshift method)": [[6, "pedalboard.PitchShift.reset"]], "reset() (pedalboard.plugin method)": [[6, "pedalboard.Plugin.reset"]], "reset() (pedalboard.plugincontainer method)": [[6, "pedalboard.PluginContainer.reset"]], "reset() (pedalboard.resample method)": [[6, "pedalboard.Resample.reset"]], "reset() (pedalboard.reverb method)": [[6, "pedalboard.Reverb.reset"]], "reset() (pedalboard.vst3plugin method)": [[6, "pedalboard.VST3Plugin.reset"]], "show_editor() (pedalboard.audiounitplugin method)": [[6, "pedalboard.AudioUnitPlugin.show_editor"]], "show_editor() (pedalboard.vst3plugin method)": [[6, "pedalboard.VST3Plugin.show_editor"]], "target_sample_rate (pedalboard.resample property)": [[6, "pedalboard.Resample.target_sample_rate"]], "time_stretch() (in module pedalboard)": [[6, "pedalboard.time_stretch"]], "units (pedalboard.audioprocessorparameter property)": [[6, "pedalboard.AudioProcessorParameter.units"]], "version (pedalboard.audiounitplugin property)": [[6, "pedalboard.AudioUnitPlugin.version"]], "version (pedalboard.vst3plugin property)": [[6, "pedalboard.VST3Plugin.version"]], "audiofile (class in pedalboard.io)": [[7, "pedalboard.io.AudioFile"]], "audiostream (class in pedalboard.io)": [[7, 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"pedalboard.io.ResampledReadableAudioFile.seekable"]], "source_sample_rate (pedalboard.io.streamresampler property)": [[7, "pedalboard.io.StreamResampler.source_sample_rate"]], "target_sample_rate (pedalboard.io.streamresampler property)": [[7, "pedalboard.io.StreamResampler.target_sample_rate"]], "tell() (pedalboard.io.readableaudiofile method)": [[7, "pedalboard.io.ReadableAudioFile.tell"]], "tell() (pedalboard.io.resampledreadableaudiofile method)": [[7, "pedalboard.io.ResampledReadableAudioFile.tell"]], "tell() (pedalboard.io.writeableaudiofile method)": [[7, "pedalboard.io.WriteableAudioFile.tell"]], "write() (pedalboard.io.writeableaudiofile method)": [[7, "pedalboard.io.WriteableAudioFile.write"]]}}) \ No newline at end of file diff --git a/pedalboard/BufferUtils.h b/pedalboard/BufferUtils.h index 34536397..1ab0075a 100644 --- a/pedalboard/BufferUtils.h +++ b/pedalboard/BufferUtils.h @@ -29,20 +29,44 @@ enum class ChannelLayout { template ChannelLayout -detectChannelLayout(const py::array_t inputArray) { +detectChannelLayout(const py::array_t inputArray, + std::optional channelCountHint = {}) { py::buffer_info inputInfo = inputArray.request(); if (inputInfo.ndim == 1) { return ChannelLayout::NotInterleaved; } else if (inputInfo.ndim == 2) { + if (channelCountHint) { + if (inputInfo.shape[0] == inputInfo.shape[1] && inputInfo.shape[0] > 1) { + throw std::runtime_error( + "Unable to determine channel layout from shape: (" + + std::to_string(inputInfo.shape[0]) + ", " + + std::to_string(inputInfo.shape[1]) + ")."); + } else if (inputInfo.shape[0] == *channelCountHint) { + return ChannelLayout::NotInterleaved; + } else if (inputInfo.shape[1] == *channelCountHint) { + return ChannelLayout::Interleaved; + } else { + throw std::runtime_error( + "Unable to determine channel layout from shape: (" + + std::to_string(inputInfo.shape[0]) + ", " + + std::to_string(inputInfo.shape[1]) + ")."); + } + } + // Try to auto-detect the channel layout from the shape if (inputInfo.shape[1] < inputInfo.shape[0]) { return ChannelLayout::Interleaved; } else if (inputInfo.shape[0] < inputInfo.shape[1]) { return ChannelLayout::NotInterleaved; + } else if (inputInfo.shape[0] == 1 || inputInfo.shape[1] == 1) { + // Do we only have one sample? Then the layout doesn't matter: + return ChannelLayout::NotInterleaved; } else { throw std::runtime_error( - "Unable to determine channel layout from shape!"); + "Unable to determine channel layout from shape: (" + + std::to_string(inputInfo.shape[0]) + ", " + + std::to_string(inputInfo.shape[1]) + ")."); } } else { throw std::runtime_error("Number of input dimensions must be 1 or 2 (got " + diff --git a/pedalboard/io/WriteableAudioFile.h b/pedalboard/io/WriteableAudioFile.h index 8247aa7c..8a874bad 100644 --- a/pedalboard/io/WriteableAudioFile.h +++ b/pedalboard/io/WriteableAudioFile.h @@ -484,7 +484,25 @@ class WriteableAudioFile unsigned int numChannels = 0; unsigned int numSamples = 0; - ChannelLayout inputChannelLayout = detectChannelLayout(inputArray); + + if (lastChannelLayout) { + try { + lastChannelLayout = detectChannelLayout(inputArray, {getNumChannels()}); + } catch (...) { + // Use the last cached layout. + } + } else { + // We have no cached layout; detect it now and raise if necessary: + try { + lastChannelLayout = detectChannelLayout(inputArray, {getNumChannels()}); + } catch (const std::exception &e) { + throw std::runtime_error( + std::string(e.what()) + + " Provide a non-square array first to allow Pedalboard to " + "determine which dimension corresponds with the number of channels " + "and which dimension corresponds with the number of samples."); + } + } // Release the GIL when we do the writing, after we // already have a reference to the input array: @@ -494,24 +512,15 @@ class WriteableAudioFile numSamples = inputInfo.shape[0]; numChannels = 1; } else if (inputInfo.ndim == 2) { - // Try to auto-detect the channel layout from the shape - if (inputInfo.shape[0] == getNumChannels() && - inputInfo.shape[1] == getNumChannels()) { - throw std::runtime_error( - "Unable to determine shape of audio input! Both dimensions have " - "the same shape. Expected " + - std::to_string(getNumChannels()) + - "-channel audio, with one dimension larger than the other."); - } else if (inputInfo.shape[1] == getNumChannels()) { + switch (*lastChannelLayout) { + case ChannelLayout::Interleaved: numSamples = inputInfo.shape[0]; numChannels = inputInfo.shape[1]; - } else if (inputInfo.shape[0] == getNumChannels()) { + break; + case ChannelLayout::NotInterleaved: numSamples = inputInfo.shape[1]; numChannels = inputInfo.shape[0]; - } else { - throw std::runtime_error( - "Unable to determine shape of audio input! Expected " + - std::to_string(getNumChannels()) + "-channel audio."); + break; } } else { throw std::runtime_error( @@ -534,7 +543,7 @@ class WriteableAudioFile // differently. This loop is duplicated here to move the if statement // outside of the tight loop, as we don't need to re-check that the input // channel is still the same on every iteration of the loop. - switch (inputChannelLayout) { + switch (*lastChannelLayout) { case ChannelLayout::Interleaved: { std::vector> deinterleaveBuffers; @@ -867,6 +876,7 @@ class WriteableAudioFile PythonOutputStream *unsafeOutputStream = nullptr; juce::ReadWriteLock objectLock; int framesWritten = 0; + std::optional lastChannelLayout = {}; }; inline py::class_ int: with pedalboard.io.AudioFile(ILieAboutSeekability(), "w", 44100, 2) as f: f.write(cached_rand(2, 44100)) assert "What's a seek?" in str(e) + + +def test_write_differently_shaped_empty_buffers(): + buf = io.BytesIO() + with pedalboard.io.AudioFile(buf, "w", 44100, 1, format="wav") as f: + f.write(np.zeros((0, 1), dtype=np.float32)) + f.write(np.zeros((1, 0), dtype=np.float32)) + f.write(np.zeros((0,), dtype=np.float32)) + assert f.tell() == 0 + + +def test_write_one_by_one_buffer(): + buf = io.BytesIO() + with pedalboard.io.AudioFile(buf, "w", 44100, 1, format="wav") as f: + # Writing a single sample at a time should work: + f.write(np.zeros((1, 1), dtype=np.float32)) + # Writing that same sample as a flat 1D array should work too: + f.write(np.zeros((1,), dtype=np.float32)) + + +def test_write_two_by_two_buffer(): + buf = io.BytesIO() + with pedalboard.io.AudioFile(buf, "w", 44100, 2, format="wav") as f: + # Writing a 2x2 buffer should not work right off the bat, as we + # can't tell which dimension is channels and which dimension is + # samples: + with pytest.raises(RuntimeError) as e: + f.write(np.zeros((2, 2), dtype=np.float32)) + assert "Provide a non-square array first" in str(e) + + # ...but if we write a non-square buffer, it should work: + f.write(np.zeros((2, 1), dtype=np.float32)) + # ...and now square buffers are interpreted as having the same channel layout: + f.write(np.zeros((2, 2), dtype=np.float32)) + + assert f.tell() == 3 + + +def test_write_two_by_two_buffer_with_hint(): + buf = io.BytesIO() + with pedalboard.io.AudioFile(buf, "w", 44100, 2, format="wav") as f: + # ...if we pass an empty array of the right shape, that shape hint should be saved: + f.write(np.zeros((2, 0), dtype=np.float32)) + # ...and now square buffers are interpreted as having the same channel layout: + f.write(np.zeros((2, 2), dtype=np.float32)) + + assert f.tell() == 2