116 lines
2.6 KiB
C++
116 lines
2.6 KiB
C++
// Copyright 2019 Citra Emulator Project
|
|
// Licensed under GPLv2 or any later version
|
|
// Refer to the license.txt file included.
|
|
|
|
#pragma once
|
|
|
|
#include <memory>
|
|
#include <vector>
|
|
#include "common/swap.h"
|
|
#include "common/threadsafe_queue.h"
|
|
|
|
namespace Frontend::Mic {
|
|
|
|
enum class Signedness : u8 {
|
|
Signed,
|
|
Unsigned,
|
|
};
|
|
|
|
using Samples = std::vector<u8>;
|
|
|
|
struct Parameters {
|
|
Signedness sign;
|
|
u8 sample_size;
|
|
bool buffer_loop;
|
|
u32 sample_rate;
|
|
u32 buffer_offset;
|
|
u32 buffer_size;
|
|
};
|
|
|
|
class Interface {
|
|
public:
|
|
Interface() = default;
|
|
|
|
virtual ~Interface();
|
|
|
|
/// Starts the microphone. Called by Core
|
|
virtual void StartSampling(const Parameters& params) = 0;
|
|
|
|
/// Stops the microphone. Called by Core
|
|
virtual void StopSampling() = 0;
|
|
|
|
/**
|
|
* Called from the actual event timing at a constant period under a given sample rate.
|
|
* When sampling is enabled this function is expected to return a buffer of 16 samples in ideal
|
|
* conditions, but can be lax if the data is coming in from another source like a real mic.
|
|
*/
|
|
virtual Samples Read() = 0;
|
|
|
|
/**
|
|
* Adjusts the Parameters. Implementations should update the parameters field in addition to
|
|
* changing the mic to sample according to the new parameters. Called by Core
|
|
*/
|
|
virtual void AdjustSampleRate(u32 sample_rate) = 0;
|
|
|
|
/// Value from 0 - 100 to adjust the mic gain setting. Called by Core
|
|
virtual void SetGain(u8 mic_gain) {
|
|
gain = mic_gain;
|
|
}
|
|
|
|
u8 GetGain() const {
|
|
return gain;
|
|
}
|
|
|
|
void SetPower(bool power) {
|
|
powered = power;
|
|
}
|
|
|
|
bool GetPower() const {
|
|
return powered;
|
|
}
|
|
|
|
bool IsSampling() const {
|
|
return is_sampling;
|
|
}
|
|
|
|
const Parameters& GetParameters() const {
|
|
return parameters;
|
|
}
|
|
|
|
protected:
|
|
Parameters parameters;
|
|
u8 gain = 0;
|
|
bool is_sampling = false;
|
|
bool powered = false;
|
|
};
|
|
|
|
class NullMic final : public Interface {
|
|
public:
|
|
void StartSampling(const Parameters& params) override;
|
|
|
|
void StopSampling() override;
|
|
|
|
void AdjustSampleRate(u32 sample_rate) override;
|
|
|
|
Samples Read() override;
|
|
};
|
|
|
|
class StaticMic final : public Interface {
|
|
public:
|
|
StaticMic();
|
|
~StaticMic() override;
|
|
|
|
void StartSampling(const Parameters& params) override;
|
|
void StopSampling() override;
|
|
void AdjustSampleRate(u32 sample_rate) override;
|
|
|
|
Samples Read() override;
|
|
|
|
private:
|
|
u16 sample_rate = 0;
|
|
u8 sample_size = 0;
|
|
std::vector<u8> CACHE_8_BIT;
|
|
std::vector<u8> CACHE_16_BIT;
|
|
};
|
|
|
|
} // namespace Frontend::Mic
|