jensandClaude Sonnet 5
97b1c34cee
tools/testhost/ is a standalone CLI executable, not a JaySynth-specific tool: it drives any VST2 plugin offline (no audio device, no GUI event loop) via JUCE's own format-agnostic AudioPluginFormatManager / AudioPluginInstance hosting API, so adding another format later (VST3, LADSPA, eventually LV2) is just another addFormat() call - none of the host logic changes. - PluginHost: format-agnostic load/prepare/process/release, parameter get/set, and patch/bank state I/O, all delegating straight to AudioProcessor. Always queries the plugin's real input/output channel counts rather than assuming "0 in" (instrument) or a fixed channel layout - the same code path drives JaySynth (0 in/2 out, MIDI-driven) and a stereo/mono effect identically. - AudioInputSource: fills the plugin's input channels with silence (default, correct no-op for instruments), a sine tone, white/pink noise, or an impulse - what makes the host equally useful for effect plugins, which need a real input signal to do anything. - WavRecorder: records the plugin's actual output channel count to a WAV file via WavAudioFormat/AudioFormatWriter. - main.cpp: CLI (--plugin/--patch/--param/--note/--input/--duration/ --wav/--sampleRate/--blockSize), with basic NaN/Inf output detection. Has its own JuceLibraryCode-equivalent package that compiles only the module amalgams needed for hosting (not juce_audio_plugin_client, which is the plugin-side VST entry point and would collide with this executable's own main()), reusing the already-vendored sdk/juce/JUCE-3.1.1 rather than a second JUCE copy - the host and any plugin it loads are decoupled at the VST2 ABI, not the JUCE source level, so this doesn't need to track JaySynth's own future JUCE version bump. Verified: builds clean (no new warnings) via `MAKE_HOME=... make -C tools/testhost`. Smoke-tested against two very different real plugins: - build/linux/release/JaySynth.so (0 in/2 out, MIDI-driven): --note 60 100 --duration 2 --wav produces correct-length, non-silent, NaN-free stereo audio. - /usr/lib/vst/ZamDelay-vst.so (1 in/1 out, real third-party VST2 effect, no MIDI): --input pink --duration 2 --wav correctly sizes input/output to mono and produces non-silent, NaN-free audio - proof the host is generic, not JaySynth-shaped. - /usr/lib/vst/ZamEQ2-vst.so: the host's own NaN/Inf detection caught a real NaN in this plugin's default state on first render - exactly the kind of regression this tool exists to catch without a GUI. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_011dhtwRLARk4eiPngcQykLJ
35 lines
1017 B
C++
35 lines
1017 B
C++
#ifndef TESTHOST_WAVRECORDER_H_INCLUDED
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#define TESTHOST_WAVRECORDER_H_INCLUDED
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#include <JuceHeader.h>
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/** Thin wrapper over WavAudioFormat/AudioFormatWriter. Only active once
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start() has been called with a destination file - a pure performance run
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has no reason to pay for disk I/O.
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*/
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class WavRecorder
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{
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public:
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WavRecorder();
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~WavRecorder();
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/** Channel count comes from whatever the plugin under test actually
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reports (PluginHost::getNumOutputChannels()) - never assumed. */
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bool start (const File &destFile, double sampleRate, int numChannels);
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bool isRecording() const { return writer != nullptr; }
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/** Writes numSamples samples from buffer's first numChannels channels. */
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void write (const AudioSampleBuffer &buffer, int numSamples);
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/** Flushes and finalises the file. Also happens automatically on destruction. */
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void stop();
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private:
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ScopedPointer<AudioFormatWriter> writer;
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JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (WavRecorder)
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};
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#endif // TESTHOST_WAVRECORDER_H_INCLUDED
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