snes9x/win32/win32_sound.cpp

126 lines
3.3 KiB
C++

/*****************************************************************************\
Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
This file is licensed under the Snes9x License.
For further information, consult the LICENSE file in the root directory.
\*****************************************************************************/
#include "IS9xSoundOutput.h"
#include "../snes9x.h"
#include "../apu/apu.h"
#include "wsnes9x.h"
#include "CXAudio2.h"
#include "CWaveOut.h"
#include "win32_sound.h"
#include "win32_display.h"
#define CLAMP(x, low, high) (((x) > (high)) ? (high) : (((x) < (low)) ? (low) : (x)))
// available sound output methods
CXAudio2 S9xXAudio2;
CWaveOut S9xWaveOut;
// Interface used to access the sound output
IS9xSoundOutput *S9xSoundOutput = &S9xXAudio2;
static double last_volume = 1.0;
/* ReInitSound
reinitializes the sound core with current settings
IN:
mode - 0 disables sound output, 1 enables
-----
returns true if successful, false otherwise
*/
bool ReInitSound()
{
if (GUI.AVIOut)
return false;
if (GUI.AutomaticInputRate)
{
int rate = WinGetAutomaticInputRate();
if (rate)
Settings.SoundInputRate = rate;
else
{
GUI.AutomaticInputRate = false;
Settings.SoundInputRate = 31950;
}
}
Settings.SoundInputRate = CLAMP(Settings.SoundInputRate,31700, 32300);
Settings.SoundPlaybackRate = CLAMP(Settings.SoundPlaybackRate,8000, 48000);
S9xSetSoundMute(GUI.Mute);
if(S9xSoundOutput)
S9xSoundOutput->DeInitSoundOutput();
last_volume = 1.0;
return S9xInitSound(25);
}
void CloseSoundDevice() {
S9xSoundOutput->DeInitSoundOutput();
S9xSetSamplesAvailableCallback(NULL,NULL);
}
/* S9xOpenSoundDevice
called by S9xInitSound - initializes the currently selected sound output and
applies the current sound settings
-----
returns true if successful, false otherwise
*/
bool8 S9xOpenSoundDevice ()
{
S9xSetSamplesAvailableCallback (NULL, NULL);
// point the interface to the correct output object
switch(GUI.SoundDriver) {
case WIN_WAVEOUT_DRIVER:
S9xSoundOutput = &S9xWaveOut;
break;
case WIN_XAUDIO2_SOUND_DRIVER:
S9xSoundOutput = &S9xXAudio2;
break;
default: // we default to WaveOut
GUI.SoundDriver = WIN_WAVEOUT_DRIVER;
S9xSoundOutput = &S9xWaveOut;
}
if(!S9xSoundOutput->InitSoundOutput())
return false;
if(!S9xSoundOutput->SetupSound())
return false;
S9xSetSamplesAvailableCallback (S9xSoundCallback, NULL);
return true;
}
/* S9xSoundCallback
called by the sound core to process generated samples
*/
void S9xSoundCallback(void *data)
{
// only try to change volume if we actually need to switch it
double current_volume = ((Settings.TurboMode || Settings.Rewinding) ? GUI.VolumeTurbo : GUI.VolumeRegular) / 100.;
if (last_volume != current_volume) {
S9xSoundOutput->SetVolume(current_volume);
last_volume = current_volume;
}
S9xSoundOutput->ProcessSound();
}
/* GetAvailableSoundDevices
returns a list of output devices available for the current output driver
*/
std::vector<std::wstring> GetAvailableSoundDevices()
{
return S9xSoundOutput->GetDeviceList();
}
/* FindAudioDeviceIndex
find an audio device that matches the currently configured audio device string
*/
int FindAudioDeviceIndex(TCHAR *audio_device)
{
return S9xSoundOutput->FindDeviceIndex(audio_device);
}