Initial community commit

Src/external_dependencies/openmpt-trunk/soundlib/MixerSettings.cpp

@@ -0,0 +1,59 @@
+/*
+ * MixerSettings.cpp
+ * -----------------
+ * Purpose: A struct containing settings for the mixer of soundlib.
+ * Notes  : (currently none)
+ * Authors: OpenMPT Devs
+ * The OpenMPT source code is released under the BSD license. Read LICENSE for more details.
+ */
+
+#include "stdafx.h"
+#include "MixerSettings.h"
+#include "Snd_defs.h"
+#include "../common/misc_util.h"
+
+OPENMPT_NAMESPACE_BEGIN
+
+MixerSettings::MixerSettings()
+{
+
+	// SNDMIX: These are global flags for playback control
+	m_nStereoSeparation = 128;
+	m_nMaxMixChannels = MAX_CHANNELS;
+
+	DSPMask = 0;
+	MixerFlags = 0;
+
+	// Mixing Configuration
+	gnChannels = 2;
+	gdwMixingFreq = 48000;
+
+	m_nPreAmp = 128;
+
+	VolumeRampUpMicroseconds = 363; // 16 @44100
+	VolumeRampDownMicroseconds = 952; // 42 @44100
+
+	NumInputChannels = 0;
+
+}
+
+int32 MixerSettings::GetVolumeRampUpSamples() const
+{
+	return Util::muldivr(VolumeRampUpMicroseconds, gdwMixingFreq, 1000000);
+}
+int32 MixerSettings::GetVolumeRampDownSamples() const
+{
+	return Util::muldivr(VolumeRampDownMicroseconds, gdwMixingFreq, 1000000);
+}
+
+void MixerSettings::SetVolumeRampUpSamples(int32 rampUpSamples)
+{
+	VolumeRampUpMicroseconds = Util::muldivr(rampUpSamples, 1000000, gdwMixingFreq);
+}
+void MixerSettings::SetVolumeRampDownSamples(int32 rampDownSamples)
+{
+	VolumeRampDownMicroseconds = Util::muldivr(rampDownSamples, 1000000, gdwMixingFreq);
+}
+
+
+OPENMPT_NAMESPACE_END