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daw_vst_bridge --render <job.json> --out <clip.wav> renders MIDI notes through the same instrument engines as realtime (SF2/SFZ/VST3/VST2) to a 16-bit stereo WAV, headless, no SHM. Mirrors plugins.py/vst_engine.py note semantics (velocity int(vel*127), bank CC0 + program at t=0, beatSec 60/max(30,bpm), totalNeeded max(1024,endSample), no tail). Chunk clamped to 256 to match VST3 host prepared buffers. Uses vendored sheredom json.h (gated on HAVE_VST3SDK); rc: 0 ok, 1 arg/job error, 2 load fail, 3 crash. Partial output removed on failure. Verified: SF2, SFZ, Nexus VST3 render non-silent at exact duration; 9/9 tests pass.
23 lines
1017 B
C++
23 lines
1017 B
C++
// native_bridge/include/RenderJob.h
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#ifndef RENDER_JOB_H
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#define RENDER_JOB_H
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#include <string>
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// Offline render mode: `daw_vst_bridge --render <job.json> --out <clip.wav>`.
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// Parses the job, creates the instrument headless, renders the MIDI notes to
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// a 16-bit stereo WAV, and exits. Realtime SHM mode is untouched.
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//
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// job.json: { instrument_type, plugin_path, preset?, sample_rate?, block_size?,
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// bpm?, soundfont_bank?, soundfont_program?,
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// notes: [{pitch?, velocity?, start_beat?, duration_beats?}] }
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// instrument_type: 0=VST3, 1=VST2, 2=SF2/SF3, 3=SFZ (InstrumentType enum).
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// pitch/velocity: velocity 0..1 (float) or 0..127; start/duration in beats.
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//
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// Returns 0 on success. On failure prints a clear error to stderr and returns
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// non-zero (1 = job/argument error, 2 = instrument load failure, 3 = plugin
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// crashed mid-render). Any partial output file is removed.
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int run_render_job(const std::string& jobPath, const std::string& outPath);
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#endif // RENDER_JOB_H
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