From 5a1adde097e489c259bd052971546e95683c3596 Mon Sep 17 00:00:00 2001 From: skal Date: Fri, 6 Feb 2026 11:12:34 +0100 Subject: feat(audio): Add Spectral Brush runtime (Phase 1 of Task #5) Implement C++ runtime foundation for procedural audio tracing tool. Changes: - Created spectral_brush.h/cc with core API - Linear Bezier interpolation - Vertical profile evaluation (Gaussian, Decaying Sinusoid, Noise) - draw_bezier_curve() for spectrogram rendering - Home-brew deterministic RNG for noise profile - Added comprehensive unit tests (test_spectral_brush.cc) - Tests Bezier interpolation, profiles, edge cases - Tests full spectrogram rendering pipeline - All 9 tests pass - Integrated into CMake build system - Fixed test_assets.cc include (asset_manager_utils.h) Design: - Spectral Brush = Central Curve (Bezier) + Vertical Profile - Enables 50-100x compression (5KB .spec to 100 bytes C++ code) - Future: Cubic Bezier, composite profiles, multi-dimensional curves Documentation: - Added doc/SPECTRAL_BRUSH_EDITOR.md (complete architecture) - Updated TODO.md with Phase 1-4 implementation plan - Updated PROJECT_CONTEXT.md to mark Task #5 in progress Test results: 21/21 tests pass (100%) Co-Authored-By: Claude Sonnet 4.5 --- CMakeLists.txt | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'CMakeLists.txt') diff --git a/CMakeLists.txt b/CMakeLists.txt index 887e018..c99364c 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -83,7 +83,7 @@ elseif (NOT DEMO_CROSS_COMPILE_WIN32) endif() #-- - Source Groups -- - -set(AUDIO_SOURCES src/audio/audio.cc src/audio/ring_buffer.cc src/audio/miniaudio_backend.cc src/audio/wav_dump_backend.cc src/audio/gen.cc src/audio/fdct.cc src/audio/idct.cc src/audio/window.cc src/audio/synth.cc src/audio/tracker.cc src/audio/spectrogram_resource_manager.cc src/audio/audio_engine.cc) +set(AUDIO_SOURCES src/audio/audio.cc src/audio/ring_buffer.cc src/audio/miniaudio_backend.cc src/audio/wav_dump_backend.cc src/audio/gen.cc src/audio/fdct.cc src/audio/idct.cc src/audio/window.cc src/audio/synth.cc src/audio/tracker.cc src/audio/spectrogram_resource_manager.cc src/audio/audio_engine.cc src/audio/spectral_brush.cc) set(PROCEDURAL_SOURCES src/procedural/generator.cc) set(GPU_SOURCES src/gpu/gpu.cc @@ -324,6 +324,10 @@ if(DEMO_BUILD_TESTS) target_link_libraries(test_dct PRIVATE audio util procedural ${DEMO_LIBS}) add_dependencies(test_dct generate_demo_assets) + add_demo_test(test_spectral_brush SpectralBrushTest src/tests/test_spectral_brush.cc ${GEN_DEMO_CC}) + target_link_libraries(test_spectral_brush PRIVATE audio util procedural ${DEMO_LIBS}) + add_dependencies(test_spectral_brush generate_demo_assets) + add_demo_test(test_audio_gen AudioGenTest src/tests/test_audio_gen.cc ${GEN_DEMO_CC}) target_link_libraries(test_audio_gen PRIVATE audio util procedural ${DEMO_LIBS}) add_dependencies(test_audio_gen generate_demo_assets) -- cgit v1.2.3