mirror of
https://github.com/libretro/snes9x.git
synced 2024-11-27 18:40:39 +00:00
348 lines
9.1 KiB
C++
348 lines
9.1 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.
|
|
\*****************************************************************************/
|
|
|
|
// CDirectSound.cpp: implementation of the CDirectSound class.
|
|
//
|
|
//////////////////////////////////////////////////////////////////////
|
|
|
|
#include "wsnes9x.h"
|
|
#include "../snes9x.h"
|
|
#include "../apu/apu.h"
|
|
#include "CDirectSound.h"
|
|
#include <process.h>
|
|
|
|
//////////////////////////////////////////////////////////////////////
|
|
// Construction/Destruction
|
|
//////////////////////////////////////////////////////////////////////
|
|
CDirectSound::CDirectSound()
|
|
{
|
|
lpDS = NULL;
|
|
lpDSB = NULL;
|
|
lpDSBPrimary = NULL;
|
|
|
|
initDone = NULL;
|
|
blockCount = 0;
|
|
blockSize = 0;
|
|
bufferSize = 0;
|
|
blockSamples = 0;
|
|
hTimer = NULL;
|
|
}
|
|
|
|
CDirectSound::~CDirectSound()
|
|
{
|
|
DeInitDirectSound();
|
|
}
|
|
|
|
/* CDirectSound::InitDirectSound
|
|
initializes the DirectSound object, the timer queue for the mixing timer, and sets the cooperation level
|
|
-----
|
|
returns true if successful, false otherwise
|
|
*/
|
|
bool CDirectSound::InitDirectSound ()
|
|
{
|
|
HRESULT dErr;
|
|
|
|
if(initDone)
|
|
return true;
|
|
|
|
if (!lpDS)
|
|
{
|
|
dErr = DirectSoundCreate (NULL, &lpDS, NULL);
|
|
if (dErr != DS_OK)
|
|
{
|
|
MessageBox (GUI.hWnd, TEXT("\
|
|
Unable to initialise DirectSound. You will not be able to hear any\n\
|
|
sound effects or music while playing.\n\n\
|
|
It is usually caused by not having DirectX installed, another\n\
|
|
application that has already opened DirectSound in exclusive\n\
|
|
mode or the Windows WAVE device has been opened."),
|
|
TEXT("Snes9X - Unable to Open DirectSound"),
|
|
MB_OK | MB_ICONWARNING);
|
|
return (false);
|
|
}
|
|
}
|
|
initDone = true;
|
|
dErr = lpDS->SetCooperativeLevel (GUI.hWnd, DSSCL_PRIORITY | DSSCL_EXCLUSIVE);
|
|
if (!SUCCEEDED(dErr))
|
|
{
|
|
dErr = lpDS->SetCooperativeLevel (GUI.hWnd, DSSCL_PRIORITY);
|
|
if (!SUCCEEDED(dErr))
|
|
{
|
|
if (!SUCCEEDED(lpDS -> SetCooperativeLevel (GUI.hWnd, DSSCL_NORMAL)))
|
|
{
|
|
DeInitDirectSound();
|
|
initDone = false;
|
|
}
|
|
if (initDone)
|
|
MessageBox (GUI.hWnd, TEXT("\
|
|
Unable to set DirectSound's priority cooperative level.\n\
|
|
Another application is dicating the sound playback rate,\n\
|
|
sample size and mono/stereo setting."),
|
|
TEXT("Snes9X - Unable to Set DirectSound priority"),
|
|
MB_OK | MB_ICONWARNING);
|
|
else
|
|
MessageBox (GUI.hWnd, TEXT("\
|
|
Unable to set any DirectSound cooperative level. You will\n\
|
|
not be able to hear any sound effects or music while playing.\n\n\
|
|
It is usually caused by another application that has already\n\
|
|
opened DirectSound in exclusive mode."),
|
|
TEXT("Snes9X - Unable to DirectSound"),
|
|
MB_OK | MB_ICONWARNING);
|
|
}
|
|
}
|
|
|
|
return (initDone);
|
|
}
|
|
|
|
/* CDirectSound::DeInitDirectSound
|
|
releases all DirectSound objects and buffers
|
|
*/
|
|
void CDirectSound::DeInitDirectSound()
|
|
{
|
|
initDone = false;
|
|
|
|
DeInitSoundBuffer();
|
|
|
|
if( lpDS != NULL)
|
|
{
|
|
lpDS->SetCooperativeLevel (GUI.hWnd, DSSCL_NORMAL);
|
|
lpDS->Release ();
|
|
lpDS = NULL;
|
|
}
|
|
}
|
|
|
|
/* CDirectSound::InitSoundBuffer
|
|
creates the DirectSound buffers and allocates the temp buffer for SoundSync
|
|
-----
|
|
returns true if successful, false otherwise
|
|
*/
|
|
bool CDirectSound::InitSoundBuffer()
|
|
{
|
|
DSBUFFERDESC dsbd;
|
|
WAVEFORMATEX wfx,wfx_actual;
|
|
HRESULT dErr;
|
|
|
|
blockCount = 4;
|
|
blockTime = GUI.SoundBufferSize / blockCount;
|
|
|
|
blockSamples = (Settings.SoundPlaybackRate * blockTime) / 1000;
|
|
blockSamples *= (Settings.Stereo ? 2 : 1);
|
|
blockSize = blockSamples * (Settings.SixteenBitSound ? 2 : 1);
|
|
bufferSize = blockSize * blockCount;
|
|
|
|
wfx.wFormatTag = WAVE_FORMAT_PCM;
|
|
wfx.nChannels = Settings.Stereo ? 2 : 1;
|
|
wfx.nSamplesPerSec = Settings.SoundPlaybackRate;
|
|
wfx.nBlockAlign = (Settings.SixteenBitSound ? 2 : 1) * (Settings.Stereo ? 2 : 1);
|
|
wfx.wBitsPerSample = Settings.SixteenBitSound ? 16 : 8;
|
|
wfx.nAvgBytesPerSec = wfx.nSamplesPerSec * wfx.nBlockAlign;
|
|
wfx.cbSize = 0;
|
|
|
|
ZeroMemory (&dsbd, sizeof(DSBUFFERDESC) );
|
|
dsbd.dwSize = sizeof(dsbd);
|
|
dsbd.dwFlags = DSBCAPS_PRIMARYBUFFER | DSBCAPS_STICKYFOCUS;
|
|
|
|
dErr = lpDS->CreateSoundBuffer (&dsbd, &lpDSBPrimary, NULL);
|
|
if (dErr != DS_OK)
|
|
{
|
|
lpDSB = NULL;
|
|
return (false);
|
|
}
|
|
|
|
lpDSBPrimary->SetFormat (&wfx);
|
|
if (lpDSBPrimary->GetFormat (&wfx_actual, sizeof (wfx_actual), NULL) == DS_OK)
|
|
{
|
|
if(wfx.nSamplesPerSec!=wfx_actual.nSamplesPerSec ||
|
|
wfx_actual.nChannels != wfx.nChannels || wfx.wBitsPerSample != wfx_actual.wBitsPerSample) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
lpDSBPrimary->Play (0, 0, DSBPLAY_LOOPING);
|
|
|
|
ZeroMemory (&dsbd, sizeof (dsbd));
|
|
dsbd.dwSize = sizeof( dsbd);
|
|
dsbd.dwFlags = DSBCAPS_CTRLFREQUENCY | DSBCAPS_CTRLVOLUME |
|
|
DSBCAPS_GETCURRENTPOSITION2 | DSBCAPS_STICKYFOCUS | DSBCAPS_CTRLPOSITIONNOTIFY;
|
|
dsbd.dwBufferBytes = bufferSize;
|
|
dsbd.lpwfxFormat = &wfx;
|
|
|
|
if (lpDS->CreateSoundBuffer (&dsbd, &lpDSB, NULL) != DS_OK)
|
|
{
|
|
lpDSBPrimary->Release ();
|
|
lpDSBPrimary = NULL;
|
|
lpDSB->Release();
|
|
lpDSB = NULL;
|
|
return (false);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/* CDirectSound::DeInitSoundBuffer
|
|
deinitializes the DirectSound/temp buffers and stops the mixing timer
|
|
*/
|
|
void CDirectSound::DeInitSoundBuffer()
|
|
{
|
|
if(hTimer) {
|
|
timeKillEvent(hTimer);
|
|
hTimer = NULL;
|
|
}
|
|
if( lpDSB != NULL)
|
|
{
|
|
lpDSB->Stop ();
|
|
lpDSB->Release();
|
|
lpDSB = NULL;
|
|
}
|
|
if( lpDSBPrimary != NULL)
|
|
{
|
|
lpDSBPrimary->Stop ();
|
|
lpDSBPrimary->Release();
|
|
lpDSBPrimary = NULL;
|
|
}
|
|
}
|
|
|
|
/* CDirectSound::SetupSound
|
|
applies sound setting changes by recreating the buffers and starting a new mixing timer
|
|
it fills the buffer before starting playback
|
|
-----
|
|
returns true if successful, false otherwise
|
|
*/
|
|
bool CDirectSound::SetupSound()
|
|
{
|
|
HRESULT hResult;
|
|
|
|
if(!initDone)
|
|
return false;
|
|
|
|
DeInitSoundBuffer();
|
|
InitSoundBuffer();
|
|
|
|
BYTE *B1;
|
|
DWORD S1;
|
|
hResult = lpDSB->Lock (0, 0, (void **)&B1,
|
|
&S1, NULL, NULL, DSBLOCK_ENTIREBUFFER);
|
|
if (hResult == DSERR_BUFFERLOST)
|
|
{
|
|
lpDSB->Restore ();
|
|
hResult = lpDSB->Lock (0, 0, (void **)&B1,
|
|
&S1, NULL, NULL, DSBLOCK_ENTIREBUFFER);
|
|
}
|
|
if (!SUCCEEDED(hResult))
|
|
{
|
|
hResult = lpDSB -> Unlock (B1, S1, NULL, NULL);
|
|
return true;
|
|
}
|
|
|
|
S9xMixSamples(B1,blockSamples * blockCount);
|
|
lpDSB->Unlock(B1,S1,NULL,NULL);
|
|
|
|
lpDSB->Play (0, 0, DSBPLAY_LOOPING);
|
|
|
|
last_block = blockCount - 1;
|
|
|
|
hTimer = timeSetEvent (blockTime/2, blockTime/2, SoundTimerCallback, (DWORD_PTR)this, TIME_PERIODIC);
|
|
if(!hTimer) {
|
|
DeInitSoundBuffer();
|
|
return false;
|
|
}
|
|
|
|
return (true);
|
|
}
|
|
|
|
void CDirectSound::SetVolume(double volume)
|
|
{
|
|
if (!initDone)
|
|
return;
|
|
|
|
// convert percentage to hundredths of dB
|
|
LONG dbVolume = (LONG)(10 * log10(volume) * 2 * 100);
|
|
|
|
lpDSB->SetVolume(dbVolume);
|
|
}
|
|
|
|
/* CDirectSound::ProcessSound
|
|
Finishes core sample creation, syncronizes the buffer access.
|
|
*/
|
|
void CDirectSound::ProcessSound()
|
|
{
|
|
EnterCriticalSection(&GUI.SoundCritSect);
|
|
|
|
S9xFinalizeSamples();
|
|
|
|
LeaveCriticalSection(&GUI.SoundCritSect);
|
|
}
|
|
|
|
/* CDirectSound::MixSound
|
|
the mixing function called by the mix timer
|
|
uses the current play position to decide if a new block can be filled with audio data
|
|
synchronizes the core buffer access with a critical section
|
|
*/
|
|
void CDirectSound::MixSound()
|
|
{
|
|
DWORD play_pos = 0, write_pos = 0;
|
|
HRESULT hResult;
|
|
DWORD curr_block;
|
|
|
|
if(!initDone)
|
|
return;
|
|
|
|
lpDSB->GetCurrentPosition (&play_pos, NULL);
|
|
|
|
curr_block = ((play_pos / blockSize) + blockCount) % blockCount;
|
|
|
|
if (curr_block != last_block)
|
|
{
|
|
BYTE *B1, *B2;
|
|
DWORD S1, S2;
|
|
|
|
write_pos = curr_block * blockSize;
|
|
last_block = curr_block;
|
|
|
|
hResult = lpDSB->Lock (write_pos, blockSize, (void **)&B1,
|
|
&S1, (void **)&B2, &S2, 0);
|
|
if (hResult == DSERR_BUFFERLOST)
|
|
{
|
|
lpDSB->Restore ();
|
|
hResult = lpDSB->Lock (write_pos, blockSize,
|
|
(void **)&B1, &S1, (void **)&B2,
|
|
&S2, 0);
|
|
}
|
|
if (!SUCCEEDED(hResult))
|
|
{
|
|
hResult = lpDSB -> Unlock (B1, S1, B2, S2);
|
|
return;
|
|
}
|
|
|
|
EnterCriticalSection(&GUI.SoundCritSect);
|
|
if (B1)
|
|
{
|
|
S9xMixSamples(B1,(Settings.SixteenBitSound?S1>>1:S1));
|
|
}
|
|
if (B2)
|
|
{
|
|
S9xMixSamples(B2,(Settings.SixteenBitSound?S2>>1:S2));
|
|
}
|
|
LeaveCriticalSection(&GUI.SoundCritSect);
|
|
|
|
SetEvent(GUI.SoundSyncEvent);
|
|
|
|
hResult = lpDSB -> Unlock (B1, S1, B2, S2);
|
|
if (!SUCCEEDED(hResult))
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* CDirectSound::SoundTimerCallback
|
|
Timer callback that tries to mix a new block. Called twice each block.
|
|
*/
|
|
|
|
VOID CALLBACK CDirectSound::SoundTimerCallback(UINT uTimerID, UINT uMsg, DWORD_PTR dwUser, DWORD_PTR dw1, DWORD_PTR dw2) {
|
|
CDirectSound *S9xDirectSound = (CDirectSound *)dwUser;
|
|
S9xDirectSound->MixSound();
|
|
}
|
|
|