158 lines
No EOL
4.1 KiB
C++
158 lines
No EOL
4.1 KiB
C++
#include "stdafx.h"
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#include "SoundMixer.h"
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#include "Console.h"
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#include "EmuSettings.h"
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#include "SoundResampler.h"
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#include "RewindManager.h"
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#include "VideoRenderer.h"
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#include "WaveRecorder.h"
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#include "Spc.h"
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#include "Msu1.h"
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#include "BaseCartridge.h"
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#include "SuperGameboy.h"
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#include "../Utilities/Equalizer.h"
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SoundMixer::SoundMixer(Console *console)
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{
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_console = console;
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_audioDevice = nullptr;
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_resampler.reset(new SoundResampler(console));
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_sampleBuffer = new int16_t[0x10000];
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}
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SoundMixer::~SoundMixer()
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{
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delete[] _sampleBuffer;
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}
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void SoundMixer::RegisterAudioDevice(IAudioDevice *audioDevice)
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{
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_audioDevice = audioDevice;
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}
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AudioStatistics SoundMixer::GetStatistics()
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{
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if(_audioDevice) {
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return _audioDevice->GetStatistics();
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} else {
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return AudioStatistics();
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}
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}
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void SoundMixer::StopAudio(bool clearBuffer)
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{
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if(_audioDevice) {
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if(clearBuffer) {
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_audioDevice->Stop();
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} else {
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_audioDevice->Pause();
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}
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}
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}
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void SoundMixer::PlayAudioBuffer(int16_t* samples, uint32_t sampleCount, uint32_t sourceRate)
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{
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AudioConfig cfg = _console->GetSettings()->GetAudioConfig();
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if(cfg.EnableEqualizer) {
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ProcessEqualizer(samples, sampleCount);
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}
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uint32_t masterVolume = cfg.MasterVolume;
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if(_console->GetSettings()->CheckFlag(EmulationFlags::InBackground)) {
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if(cfg.MuteSoundInBackground) {
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masterVolume = 0;
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} else if(cfg.ReduceSoundInBackground) {
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masterVolume = cfg.VolumeReduction == 100 ? 0 : masterVolume * (100 - cfg.VolumeReduction) / 100;
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}
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} else if(cfg.ReduceSoundInFastForward && _console->GetSettings()->CheckFlag(EmulationFlags::TurboOrRewind)) {
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masterVolume = cfg.VolumeReduction == 100 ? 0 : masterVolume * (100 - cfg.VolumeReduction) / 100;
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}
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_leftSample = samples[0];
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_rightSample = samples[1];
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int16_t *out = _sampleBuffer;
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uint32_t count = _resampler->Resample(samples, sampleCount, sourceRate, cfg.SampleRate, out);
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SuperGameboy* sgb = _console->GetCartridge()->GetSuperGameboy();
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if(sgb) {
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uint32_t targetRate = (uint32_t)(cfg.SampleRate * _resampler->GetRateAdjustment());
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sgb->MixAudio(targetRate, out, count);
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}
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shared_ptr<Msu1> msu1 = _console->GetMsu1();
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if(msu1) {
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msu1->MixAudio(out, count, cfg.SampleRate);
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}
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if(masterVolume < 100) {
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//Apply volume if not using the default value
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for(uint32_t i = 0; i < count * 2; i++) {
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out[i] = (int32_t)out[i] * (int32_t)masterVolume / 100;
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}
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}
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shared_ptr<RewindManager> rewindManager = _console->GetRewindManager();
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if(!_console->IsRunAheadFrame() && rewindManager && rewindManager->SendAudio(out, count)) {
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bool isRecording = _waveRecorder || _console->GetVideoRenderer()->IsRecording();
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if(isRecording) {
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if(_waveRecorder) {
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_waveRecorder->WriteSamples(out, count, cfg.SampleRate, true);
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}
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_console->GetVideoRenderer()->AddRecordingSound(out, count, cfg.SampleRate);
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}
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if(_audioDevice) {
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if(!cfg.EnableAudio) {
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_audioDevice->Stop();
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return;
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}
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_audioDevice->PlayBuffer(out, count, cfg.SampleRate, true);
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_audioDevice->ProcessEndOfFrame();
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}
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}
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}
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void SoundMixer::ProcessEqualizer(int16_t* samples, uint32_t sampleCount)
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{
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AudioConfig cfg = _console->GetSettings()->GetAudioConfig();
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if(!_equalizer) {
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_equalizer.reset(new Equalizer());
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}
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vector<double> bandGains = {
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cfg.Band1Gain, cfg.Band2Gain, cfg.Band3Gain, cfg.Band4Gain, cfg.Band5Gain,
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cfg.Band6Gain, cfg.Band7Gain, cfg.Band8Gain, cfg.Band9Gain, cfg.Band10Gain,
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cfg.Band11Gain, cfg.Band12Gain, cfg.Band13Gain, cfg.Band14Gain, cfg.Band15Gain,
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cfg.Band16Gain, cfg.Band17Gain, cfg.Band18Gain, cfg.Band19Gain, cfg.Band20Gain
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};
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_equalizer->UpdateEqualizers(bandGains, Spc::SpcSampleRate);
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_equalizer->ApplyEqualizer(sampleCount, samples);
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}
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double SoundMixer::GetRateAdjustment()
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{
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return _resampler->GetRateAdjustment();
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}
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void SoundMixer::StartRecording(string filepath)
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{
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_waveRecorder.reset(new WaveRecorder(filepath, _console->GetSettings()->GetAudioConfig().SampleRate, true));
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}
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void SoundMixer::StopRecording()
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{
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_waveRecorder.reset();
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}
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bool SoundMixer::IsRecording()
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{
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return _waveRecorder.get() != nullptr;
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}
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void SoundMixer::GetLastSamples(int16_t &left, int16_t &right)
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{
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left = _leftSample;
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right = _rightSample;
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} |