111 lines
2.4 KiB
C++
111 lines
2.4 KiB
C++
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// Copyright 2018 Citra Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#pragma once
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#include <array>
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#include <memory>
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#include "common/swap.h"
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namespace Frontend {
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namespace Mic {
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enum class Signedness : u8 {
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Signed,
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Unsigned,
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};
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struct Parameters {
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Signedness sign;
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u8 sample_size;
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bool buffer_loop;
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u32 sample_rate;
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u32 buffer_offset;
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u32 buffer_size;
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};
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class Interface {
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public:
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/// Starts the microphone. Called by Core
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virtual void StartSampling(Parameters params) = 0;
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/// Stops the microphone. Called by Core
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virtual void StopSampling() = 0;
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Interface() = default;
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Interface(const Interface& other)
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: gain(other.gain), powered(other.powered), backing_memory(other.backing_memory),
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backing_memory_size(other.backing_memory_size), parameters(other.parameters) {}
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/// Sets the backing memory that the mic should write raw samples into. Called by Core
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void SetBackingMemory(u8* pointer, u32 size) {
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backing_memory = pointer;
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backing_memory_size = size;
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}
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/// Adjusts the Parameters. Implementations should update the parameters field in addition to
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/// changing the mic to sample according to the new parameters. Called by Core
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virtual void AdjustSampleRate(u32 sample_rate) = 0;
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/// Value from 0 - 100 to adjust the mic gain setting. Called by Core
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virtual void SetGain(u8 mic_gain) {
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gain = mic_gain;
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}
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u8 GetGain() const {
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return gain;
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}
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void SetPower(bool power) {
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powered = power;
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}
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bool GetPower() const {
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return powered;
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}
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bool IsSampling() const {
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return is_sampling;
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}
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Parameters GetParameters() const {
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return parameters;
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}
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protected:
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u8* backing_memory;
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u32 backing_memory_size;
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Parameters parameters;
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u8 gain = 0;
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bool is_sampling = false;
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bool powered = false;
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};
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class NullMic final : public Interface {
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public:
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void StartSampling(Parameters params) override {
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parameters = params;
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is_sampling = true;
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}
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void StopSampling() override {
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is_sampling = false;
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}
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void AdjustSampleRate(u32 sample_rate) override {
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parameters.sample_rate = sample_rate;
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}
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};
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} // namespace Mic
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void RegisterMic(std::shared_ptr<Mic::Interface> mic);
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std::shared_ptr<Mic::Interface> GetCurrentMic();
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} // namespace Frontend
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