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AudioCommon: move DPL2 decoding into Mixer

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This commit is contained in:
Michael Maltese
2017-04-23 18:05:21 -07:00
parent 0e6bd74ed6
commit a4508e85e8
5 changed files with 43 additions and 54 deletions
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19
Source/Core/AudioCommon/PulseAudioStream.cpp
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@ -4,7 +4,6 @@
#include <cstring>
#include "AudioCommon/DPL2Decoder.h"
#include "AudioCommon/PulseAudioStream.h"
#include "Common/CommonTypes.h"
#include "Common/Logging/Log.h"
@ -30,9 +29,6 @@ bool PulseAudio::Start()
m_run_thread.Set();
m_thread = std::thread(&PulseAudio::SoundLoop, this);
// Initialize DPL2 parameters
DPL2Reset();
return true;
}
@ -194,23 +190,12 @@ void PulseAudio::WriteCallback(pa_stream* s, size_t length)
}
else
{
// get a floating point mix
s16 s16buffer_stereo[frames * 2];
m_mixer->Mix(s16buffer_stereo, frames); // implicitly mixes to 16-bit stereo
float floatbuffer_stereo[frames * 2];
// s16 to float
for (int i = 0; i < frames * 2; ++i)
{
floatbuffer_stereo[i] = s16buffer_stereo[i] / float(1 << 15);
}
if (m_channels == 5) // Extract dpl2/5.0 Surround
{
float floatbuffer_6chan[frames * 6];
// DPL2Decode output: LEFTFRONT, RIGHTFRONT, CENTREFRONT, (sub), LEFTREAR, RIGHTREAR
DPL2Decode(floatbuffer_stereo, frames, floatbuffer_6chan);
m_mixer->MixSurround(floatbuffer_6chan, frames);
// DPL2Decode output: LEFTFRONT, RIGHTFRONT, CENTREFRONT, (sub), LEFTREAR, RIGHTREAR
// Discard the subwoofer channel - DPL2Decode generates a pretty
// good 5.0 but not a good 5.1 output.
const int dpl2_to_5chan[] = {0, 1, 2, 4, 5};