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Mixer: Calculate actual_samples based on availability in all FIFOs

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This commit is contained in:
MerryMage 2017-04-11 12:41:35 +01:00
parent ac0df5b2db
commit f5018010d3
2 changed files with 29 additions and 9 deletions
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37
Source/Core/AudioCommon/Mixer.cpp
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@ -130,19 +130,30 @@ unsigned int CMixer::Mix(short* samples, unsigned int num_samples)
memset(samples, 0, num_samples * 2 * sizeof(short));
const bool stretch = SConfig::GetInstance().m_audio_stretch;
unsigned int actual_samples = m_dma_mixer.Mix(samples, num_samples, !stretch);
m_streaming_mixer.Mix(samples, num_samples, !stretch);
m_wiimote_speaker_mixer.Mix(samples, num_samples, !stretch);
if (stretch)
if (SConfig::GetInstance().m_audio_stretch)
{
if (m_is_stretching != stretch)
unsigned int actual_samples = std::min({
m_dma_mixer.AvailableSamples(), m_streaming_mixer.AvailableSamples(), num_samples,
});
m_dma_mixer.Mix(samples, actual_samples, false);
m_streaming_mixer.Mix(samples, actual_samples, false);
m_wiimote_speaker_mixer.Mix(samples, actual_samples, false);
if (!m_is_stretching)
{
m_sound_touch.clear();
m_is_stretching = true;
}
StretchAudio(samples, actual_samples, num_samples);
}
m_is_stretching = stretch;
else
{
m_dma_mixer.Mix(samples, num_samples, true);
m_streaming_mixer.Mix(samples, num_samples, true);
m_wiimote_speaker_mixer.Mix(samples, num_samples, true);
m_is_stretching = false;
}
return num_samples;
}
@ -378,3 +389,11 @@ void CMixer::MixerFifo::SetVolume(unsigned int lvolume, unsigned int rvolume)
m_LVolume.store(lvolume + (lvolume >> 7));
m_RVolume.store(rvolume + (rvolume >> 7));
}
unsigned int CMixer::MixerFifo::AvailableSamples() const
{
unsigned int samples_in_fifo = ((m_indexW.load() - m_indexR.load()) & INDEX_MASK) / 2;
if (samples_in_fifo <= 1)
return 0; // CMixer::MixerFifo::Mix always keeps one sample in the buffer.
return (samples_in_fifo - 1) * m_mixer->m_sampleRate / m_input_sample_rate;
}

1
Source/Core/AudioCommon/Mixer.h
View file

@ -60,6 +60,7 @@ private:
void SetInputSampleRate(unsigned int rate);
unsigned int GetInputSampleRate() const;
void SetVolume(unsigned int lvolume, unsigned int rvolume);
unsigned int AvailableSamples() const;
private:
CMixer* m_mixer;