88 lines
1.9 KiB
C++
88 lines
1.9 KiB
C++
#pragma once
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#include "renpy/language.h"
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#include "poem.h"
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namespace audio {
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constexpr int sample_rate = 48000;
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constexpr int channels = 2;
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struct DelayFilter {
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float * buffers[channels];
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int indexes[channels];
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const int maxDelay;
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int delay;
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float gain;
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DelayFilter(int maxDelay, int delay, float gain);
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void reset();
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virtual float feed(int channel, float value) = 0;
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};
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struct FeedbackCombFilter : DelayFilter {
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FeedbackCombFilter(int maxDelay, int delay, float gain);
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float feed(int channel, float value) override;
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};
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struct FeedforwardCombFilter : DelayFilter {
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public:
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FeedforwardCombFilter(int maxDelay, int delay, float gain);
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float feed(int channel, float value) override;
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};
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struct AllpassFilter : DelayFilter {
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AllpassFilter(int maxDelay, int delay, float gain);
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float feed(int channel, float x) override;
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};
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using FBCF = FeedbackCombFilter;
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using FFCF = FeedforwardCombFilter;
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using AP = AllpassFilter;
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struct lr { float l; float r; };
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struct Reverb {
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static constexpr int apCount = 3;
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static constexpr int cfCount = 4;
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DelayFilter * cf;
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DelayFilter * ap;
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Reverb(DelayFilter * cf, DelayFilter * ap);
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void reset();
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lr feed(int channel, float x);
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};
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extern int reverbIndex;
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extern Reverb reverbs[];
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extern int const reverbsCount;
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extern float wetGain;
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extern float dryGain;
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struct mix_channel {
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enum {
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music = 0,
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poem = 1,
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voice = 2,
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};
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};
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constexpr int mixChannelCount = 3;
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extern float mixChannelGain[mixChannelCount];
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extern int poem_timestamp_index;
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extern int poem_line_index;
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extern poem::poem const * poem_playing;
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void init();
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void load(renpy::language::audio const * const audio, int count);
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void update();
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void play(int audio_index);
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void stop(int audio_index, double fadeout);
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void stop_all();
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bool exists(int audio_index);
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}
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