mirror of
https://github.com/dolphin-emu/dolphin.git
synced 2025-10-24 17:09:06 +00:00
104 lines
3.3 KiB
C++
104 lines
3.3 KiB
C++
// Copyright 2009 Dolphin Emulator Project
|
|
// Licensed under GPLv2+
|
|
// Refer to the license.txt file included.
|
|
|
|
#pragma once
|
|
|
|
#include <array>
|
|
#include <atomic>
|
|
|
|
#include "AudioCommon/AudioStretcher.h"
|
|
#include "AudioCommon/SurroundDecoder.h"
|
|
#include "AudioCommon/WaveFile.h"
|
|
#include "Common/CommonTypes.h"
|
|
|
|
class PointerWrap;
|
|
|
|
class Mixer final
|
|
{
|
|
public:
|
|
explicit Mixer(unsigned int BackendSampleRate);
|
|
~Mixer();
|
|
|
|
void DoState(PointerWrap& p);
|
|
|
|
// Called from audio threads
|
|
unsigned int Mix(short* samples, unsigned int numSamples);
|
|
unsigned int MixSurround(float* samples, unsigned int num_samples);
|
|
|
|
// Called from main thread
|
|
void PushSamples(const short* samples, unsigned int num_samples);
|
|
void PushStreamingSamples(const short* samples, unsigned int num_samples);
|
|
void PushWiimoteSpeakerSamples(const short* samples, unsigned int num_samples,
|
|
unsigned int sample_rate);
|
|
unsigned int GetSampleRate() const { return m_sampleRate; }
|
|
void SetDMAInputSampleRate(unsigned int rate);
|
|
void SetStreamInputSampleRate(unsigned int rate);
|
|
void SetStreamingVolume(unsigned int lvolume, unsigned int rvolume);
|
|
void SetWiimoteSpeakerVolume(unsigned int lvolume, unsigned int rvolume);
|
|
|
|
void StartLogDTKAudio(const std::string& filename);
|
|
void StopLogDTKAudio();
|
|
|
|
void StartLogDSPAudio(const std::string& filename);
|
|
void StopLogDSPAudio();
|
|
|
|
float GetCurrentSpeed() const { return m_speed.load(); }
|
|
void UpdateSpeed(float val) { m_speed.store(val); }
|
|
|
|
private:
|
|
static constexpr u32 MAX_SAMPLES = 1024 * 4; // 128 ms
|
|
static constexpr u32 INDEX_MASK = MAX_SAMPLES * 2 - 1;
|
|
static constexpr int MAX_FREQ_SHIFT = 200; // Per 32000 Hz
|
|
static constexpr float CONTROL_FACTOR = 0.2f;
|
|
static constexpr u32 CONTROL_AVG = 32; // In freq_shift per FIFO size offset
|
|
|
|
const unsigned int SURROUND_CHANNELS = 6;
|
|
const unsigned int SURROUND_BLOCK_SIZE = 512;
|
|
|
|
class MixerFifo final
|
|
{
|
|
public:
|
|
MixerFifo(Mixer* mixer, unsigned sample_rate) : m_mixer(mixer), m_input_sample_rate(sample_rate)
|
|
{
|
|
}
|
|
void DoState(PointerWrap& p);
|
|
void PushSamples(const short* samples, unsigned int num_samples);
|
|
unsigned int Mix(short* samples, unsigned int numSamples, bool consider_framelimit = true);
|
|
void SetInputSampleRate(unsigned int rate);
|
|
unsigned int GetInputSampleRate() const;
|
|
void SetVolume(unsigned int lvolume, unsigned int rvolume);
|
|
unsigned int AvailableSamples() const;
|
|
|
|
private:
|
|
Mixer* m_mixer;
|
|
unsigned m_input_sample_rate;
|
|
std::array<short, MAX_SAMPLES * 2> m_buffer{};
|
|
std::atomic<u32> m_indexW{0};
|
|
std::atomic<u32> m_indexR{0};
|
|
// Volume ranges from 0-256
|
|
std::atomic<s32> m_LVolume{256};
|
|
std::atomic<s32> m_RVolume{256};
|
|
float m_numLeftI = 0.0f;
|
|
u32 m_frac = 0;
|
|
};
|
|
|
|
MixerFifo m_dma_mixer{this, 32000};
|
|
MixerFifo m_streaming_mixer{this, 48000};
|
|
MixerFifo m_wiimote_speaker_mixer{this, 3000};
|
|
unsigned int m_sampleRate;
|
|
|
|
bool m_is_stretching = false;
|
|
AudioCommon::AudioStretcher m_stretcher;
|
|
AudioCommon::SurroundDecoder m_surround_decoder;
|
|
std::array<short, MAX_SAMPLES * 2> m_scratch_buffer;
|
|
|
|
WaveFileWriter m_wave_writer_dtk;
|
|
WaveFileWriter m_wave_writer_dsp;
|
|
|
|
bool m_log_dtk_audio = false;
|
|
bool m_log_dsp_audio = false;
|
|
|
|
// Current rate of emulation (1.0 = 100% speed)
|
|
std::atomic<float> m_speed{0.0f};
|
|
};
|