0xrsydn/gameboy-rust
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refactor(audio): share PSG length and envelope state

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0xrsydn 2026-10-07 02:40:09 +07:00
commit ca2134f23c
5 changed files with 153 additions and 123 deletions
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docs/architecture.md
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@ -54,7 +54,8 @@ The repository is a Cargo workspace with three crates:
| `crates/gba-core/src/cpu/fetch_boundary_tests.rs` | Actual fetch-region snapshots, split refills, IWRAM lane requirements, ROM-window boundaries, and nominal timing |
| `crates/gba-core/src/io.rs` | I/O registers, timers, HALT/STOP wake-up, next-event bounds, and IRQ latches |
| `crates/gba-core/src/audio.rs` | Direct Sound state, PSG sequencer, idle channel/wave banks, and instantaneous stereo mixing |
| `crates/gba-core/src/audio/pulse.rs` | Shared pulse oscillator, length, envelope, and status; sweep is mapped only for channel 1 |
| `crates/gba-core/src/audio/pulse.rs` | Shared pulse oscillator; sweep is mapped only for channel 1 |
| `crates/gba-core/src/audio/modulation.rs` | Shared PSG length, envelope, logical DAC gate, and activity state |
| `crates/gba-core/src/audio/pulse/tests.rs` | Exhaustive frequency/duty arithmetic and original modulation edge tests |
| `crates/gba-core/tests/pulse_sound.rs` | Register masks, stereo mixing, sequencer clocks, idle modes, batching, and explicit limits |
| `crates/gba-core/tests/pulse_sound/channel2.rs` | Channel 2 mapping, register gaps, independent state, shared clocks, and sum-before-rounding mixing |