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Diffstat (limited to 'src/audio_core/renderer/voice/voice_state.h')
-rw-r--r-- | src/audio_core/renderer/voice/voice_state.h | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/src/audio_core/renderer/voice/voice_state.h b/src/audio_core/renderer/voice/voice_state.h new file mode 100644 index 000000000..d5497e2fb --- /dev/null +++ b/src/audio_core/renderer/voice/voice_state.h @@ -0,0 +1,70 @@ +// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project +// SPDX-License-Identifier: GPL-2.0-or-later + +#pragma once + +#include <array> + +#include "audio_core/common/common.h" +#include "common/common_types.h" +#include "common/fixed_point.h" + +namespace AudioCore::AudioRenderer { +/** + * Holds a state for a voice. One is kept host-side, and one is used by the AudioRenderer, + * host-side is updated on the next iteration. + */ +struct VoiceState { + /** + * State of the voice's biquad filter. + */ + struct BiquadFilterState { + Common::FixedPoint<50, 14> s0; + Common::FixedPoint<50, 14> s1; + Common::FixedPoint<50, 14> s2; + Common::FixedPoint<50, 14> s3; + }; + + /** + * Context for ADPCM decoding. + */ + struct AdpcmContext { + u16 header; + s16 yn0; + s16 yn1; + }; + + /// Number of samples played + u64 played_sample_count; + /// Current offset from the starting offset + u32 offset; + /// Currently active wavebuffer index + u32 wave_buffer_index; + /// Array of which wavebuffers are currently valid + + std::array<bool, MaxWaveBuffers> wave_buffer_valid; + /// Number of wavebuffers consumed, given back to the game + u32 wave_buffers_consumed; + /// History of samples, used for rate conversion + + std::array<s16, MaxWaveBuffers * 2> sample_history; + /// Current read fraction, used for resampling + Common::FixedPoint<49, 15> fraction; + /// Current adpcm context + AdpcmContext adpcm_context; + /// Current biquad states, used when filtering + + std::array<std::array<BiquadFilterState, MaxBiquadFilters>, MaxBiquadFilters> biquad_states; + /// Previous samples + std::array<s32, MaxMixBuffers> previous_samples; + /// Unused + u32 external_context_size; + /// Unused + bool external_context_enabled; + /// Was this voice dropped? + bool voice_dropped; + /// Number of times the wavebuffer has looped + s32 loop_count; +}; + +} // namespace AudioCore::AudioRenderer |