diff src/audio/dart/SDL_dart.c @ 1662:782fd950bd46 SDL-1.3

Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API. WARNING: None of the video drivers have been updated for the new API yet! The API is still under design and very fluid. The code is now run through a consistent indent format: indent -i4 -nut -nsc -br -ce The headers are being converted to automatically generate doxygen documentation.
author Sam Lantinga <slouken@libsdl.org>
date Sun, 28 May 2006 13:04:16 +0000
parents d910939febfa
children 4da1ee79c9af
line wrap: on
line diff
--- a/src/audio/dart/SDL_dart.c	Sun May 21 17:27:13 2006 +0000
+++ b/src/audio/dart/SDL_dart.c	Sun May 28 13:04:16 2006 +0000
@@ -32,9 +32,10 @@
 #define BUFFER_EMPTY       0
 #define BUFFER_USED        1
 
-typedef struct _tMixBufferDesc {
-  int              iBufferUsage;      // BUFFER_EMPTY or BUFFER_USED
-  SDL_AudioDevice *pSDLAudioDevice;
+typedef struct _tMixBufferDesc
+{
+    int iBufferUsage;           // BUFFER_EMPTY or BUFFER_USED
+    SDL_AudioDevice *pSDLAudioDevice;
 } tMixBufferDesc, *pMixBufferDesc;
 
 
@@ -44,70 +45,67 @@
 // This function is called by DART, when an event occures, like end of 
 // playback of a buffer, etc...
 //---------------------------------------------------------------------
-LONG APIENTRY DARTEventFunc(ULONG ulStatus,
-			    PMCI_MIX_BUFFER pBuffer,
-			    ULONG ulFlags)
+LONG APIENTRY
+DARTEventFunc (ULONG ulStatus, PMCI_MIX_BUFFER pBuffer, ULONG ulFlags)
 {
-  if (ulFlags && MIX_WRITE_COMPLETE)
-  { // Playback of buffer completed!
+    if (ulFlags && MIX_WRITE_COMPLETE) {        // Playback of buffer completed!
 
-    // Get pointer to buffer description
-    pMixBufferDesc pBufDesc;
+        // Get pointer to buffer description
+        pMixBufferDesc pBufDesc;
+
+        if (pBuffer) {
+            pBufDesc = (pMixBufferDesc) (*pBuffer).ulUserParm;
 
-    if (pBuffer)
-    {
-      pBufDesc = (pMixBufferDesc) (*pBuffer).ulUserParm;
-
-      if (pBufDesc)
-      {
-        SDL_AudioDevice *pSDLAudioDevice = pBufDesc->pSDLAudioDevice;
-        // Set the buffer to be empty
-        pBufDesc->iBufferUsage = BUFFER_EMPTY;
-        // And notify DART feeder thread that it will have to work a bit.
-        if (pSDLAudioDevice)
-        DosPostEventSem(pSDLAudioDevice->hidden->hevAudioBufferPlayed);
-      }
+            if (pBufDesc) {
+                SDL_AudioDevice *pSDLAudioDevice = pBufDesc->pSDLAudioDevice;
+                // Set the buffer to be empty
+                pBufDesc->iBufferUsage = BUFFER_EMPTY;
+                // And notify DART feeder thread that it will have to work a bit.
+                if (pSDLAudioDevice)
+                    DosPostEventSem (pSDLAudioDevice->hidden->
+                                     hevAudioBufferPlayed);
+            }
+        }
     }
-  }
-  return TRUE;
+    return TRUE;
 }
 
 
-int DART_OpenAudio(_THIS, SDL_AudioSpec *spec)
+int
+DART_OpenAudio (_THIS, SDL_AudioSpec * spec)
 {
-  MCI_AMP_OPEN_PARMS AmpOpenParms;
-  MCI_GENERIC_PARMS GenericParms;
-  int iDeviceOrd = 0; // Default device to be used
-  int bOpenShared = 1; // Try opening it shared
-  int iBits = 16; // Default is 16 bits signed
-  int iFreq = 44100; // Default is 44KHz
-  int iChannels = 2; // Default is 2 channels (Stereo)
-  int iNumBufs = 2;  // Number of audio buffers: 2
-  int iBufSize;
-  int iOpenMode;
-  int iSilence;
-  int rc;
+    MCI_AMP_OPEN_PARMS AmpOpenParms;
+    MCI_GENERIC_PARMS GenericParms;
+    int iDeviceOrd = 0;         // Default device to be used
+    int bOpenShared = 1;        // Try opening it shared
+    int iBits = 16;             // Default is 16 bits signed
+    int iFreq = 44100;          // Default is 44KHz
+    int iChannels = 2;          // Default is 2 channels (Stereo)
+    int iNumBufs = 2;           // Number of audio buffers: 2
+    int iBufSize;
+    int iOpenMode;
+    int iSilence;
+    int rc;
 
-  // First thing is to try to open a given DART device!
-  SDL_memset(&AmpOpenParms, 0, sizeof(MCI_AMP_OPEN_PARMS));
-  // pszDeviceType should contain the device type in low word, and device ordinal in high word!
-  AmpOpenParms.pszDeviceType = (PSZ) (MCI_DEVTYPE_AUDIO_AMPMIX | (iDeviceOrd << 16));
+    // First thing is to try to open a given DART device!
+    SDL_memset (&AmpOpenParms, 0, sizeof (MCI_AMP_OPEN_PARMS));
+    // pszDeviceType should contain the device type in low word, and device ordinal in high word!
+    AmpOpenParms.pszDeviceType =
+        (PSZ) (MCI_DEVTYPE_AUDIO_AMPMIX | (iDeviceOrd << 16));
 
-  iOpenMode = MCI_WAIT | MCI_OPEN_TYPE_ID;
-  if (bOpenShared) iOpenMode |= MCI_OPEN_SHAREABLE;
+    iOpenMode = MCI_WAIT | MCI_OPEN_TYPE_ID;
+    if (bOpenShared)
+        iOpenMode |= MCI_OPEN_SHAREABLE;
 
-  rc = mciSendCommand( 0, MCI_OPEN,
-                       iOpenMode,
-		       (PVOID) &AmpOpenParms, 0);
-  if (rc!=MCIERR_SUCCESS) // No audio available??
-    return (-1);
-  // Save the device ID we got from DART!
-  // We will use this in the next calls!
-  iDeviceOrd = AmpOpenParms.usDeviceID;
+    rc = mciSendCommand (0, MCI_OPEN, iOpenMode, (PVOID) & AmpOpenParms, 0);
+    if (rc != MCIERR_SUCCESS)   // No audio available??
+        return (-1);
+    // Save the device ID we got from DART!
+    // We will use this in the next calls!
+    iDeviceOrd = AmpOpenParms.usDeviceID;
 
-  // Determine the audio parameters from the AudioSpec
-  switch ( spec->format & 0xFF )
-  {
+    // Determine the audio parameters from the AudioSpec
+    switch (spec->format & 0xFF) {
     case 8:
         /* Unsigned 8 bit audio data */
         spec->format = AUDIO_U8;
@@ -122,305 +120,336 @@
         break;
     default:
         // Close DART, and exit with error code!
-        mciSendCommand(iDeviceOrd, MCI_CLOSE, MCI_WAIT, &GenericParms, 0);
-        SDL_SetError("Unsupported audio format");
-        return(-1);
-  }
-  iFreq = spec->freq;
-  iChannels = spec->channels;
-  /* Update the fragment size as size in bytes */
-  SDL_CalculateAudioSpec(spec);
-  iBufSize = spec->size;
+        mciSendCommand (iDeviceOrd, MCI_CLOSE, MCI_WAIT, &GenericParms, 0);
+        SDL_SetError ("Unsupported audio format");
+        return (-1);
+    }
+    iFreq = spec->freq;
+    iChannels = spec->channels;
+    /* Update the fragment size as size in bytes */
+    SDL_CalculateAudioSpec (spec);
+    iBufSize = spec->size;
 
-  // Now query this device if it supports the given freq/bits/channels!
-  SDL_memset(&(_this->hidden->MixSetupParms), 0, sizeof(MCI_MIXSETUP_PARMS));
-  _this->hidden->MixSetupParms.ulBitsPerSample = iBits;
-  _this->hidden->MixSetupParms.ulFormatTag = MCI_WAVE_FORMAT_PCM;
-  _this->hidden->MixSetupParms.ulSamplesPerSec = iFreq;
-  _this->hidden->MixSetupParms.ulChannels = iChannels;
-  _this->hidden->MixSetupParms.ulFormatMode = MCI_PLAY;
-  _this->hidden->MixSetupParms.ulDeviceType = MCI_DEVTYPE_WAVEFORM_AUDIO;
-  _this->hidden->MixSetupParms.pmixEvent = DARTEventFunc;
-  rc = mciSendCommand (iDeviceOrd, MCI_MIXSETUP,
-                       MCI_WAIT | MCI_MIXSETUP_QUERYMODE,
-                       &(_this->hidden->MixSetupParms), 0);
-  if (rc!=MCIERR_SUCCESS)
-  { // The device cannot handle this format!
-    // Close DART, and exit with error code!
-    mciSendCommand(iDeviceOrd, MCI_CLOSE, MCI_WAIT, &GenericParms, 0);
-    SDL_SetError("Audio device doesn't support requested audio format");
-    return(-1);
-  }
-  // The device can handle this format, so initialize!
-  rc = mciSendCommand(iDeviceOrd, MCI_MIXSETUP,
-                      MCI_WAIT | MCI_MIXSETUP_INIT,
-                      &(_this->hidden->MixSetupParms), 0);
-  if (rc!=MCIERR_SUCCESS)
-  { // The device could not be opened!
-    // Close DART, and exit with error code!
-    mciSendCommand(iDeviceOrd, MCI_CLOSE, MCI_WAIT, &GenericParms, 0);
-    SDL_SetError("Audio device could not be set up");
-    return(-1);
-  }
-  // Ok, the device is initialized.
-  // Now we should allocate buffers. For this, we need a place where
-  // the buffer descriptors will be:
-  _this->hidden->pMixBuffers = (MCI_MIX_BUFFER *) SDL_malloc(sizeof(MCI_MIX_BUFFER)*iNumBufs);
-  if (!(_this->hidden->pMixBuffers))
-  { // Not enough memory!
-    // Close DART, and exit with error code!
-    mciSendCommand(iDeviceOrd, MCI_CLOSE, MCI_WAIT, &GenericParms, 0);
-    SDL_SetError("Not enough memory for audio buffer descriptors");
-    return(-1);
-  }
-  // Now that we have the place for buffer list, we can ask DART for the
-  // buffers!
-  _this->hidden->BufferParms.ulNumBuffers = iNumBufs;               // Number of buffers
-  _this->hidden->BufferParms.ulBufferSize = iBufSize;               // each with this size
-  _this->hidden->BufferParms.pBufList = _this->hidden->pMixBuffers; // getting descriptorts into this list
-  // Allocate buffers!
-  rc = mciSendCommand(iDeviceOrd, MCI_BUFFER,
-                      MCI_WAIT | MCI_ALLOCATE_MEMORY,
-                      &(_this->hidden->BufferParms), 0);
-  if ((rc!=MCIERR_SUCCESS) || (iNumBufs != _this->hidden->BufferParms.ulNumBuffers) || (_this->hidden->BufferParms.ulBufferSize==0))
-  { // Could not allocate memory!
-    // Close DART, and exit with error code!
-    SDL_free(_this->hidden->pMixBuffers); _this->hidden->pMixBuffers = NULL;
-    mciSendCommand(iDeviceOrd, MCI_CLOSE, MCI_WAIT, &GenericParms, 0);
-    SDL_SetError("DART could not allocate buffers");
-    return(-1);
-  }
-  // Ok, we have all the buffers allocated, let's mark them!
-  {
-    int i;
-    for (i=0; i<iNumBufs; i++)
+    // Now query this device if it supports the given freq/bits/channels!
+    SDL_memset (&(_this->hidden->MixSetupParms), 0,
+                sizeof (MCI_MIXSETUP_PARMS));
+    _this->hidden->MixSetupParms.ulBitsPerSample = iBits;
+    _this->hidden->MixSetupParms.ulFormatTag = MCI_WAVE_FORMAT_PCM;
+    _this->hidden->MixSetupParms.ulSamplesPerSec = iFreq;
+    _this->hidden->MixSetupParms.ulChannels = iChannels;
+    _this->hidden->MixSetupParms.ulFormatMode = MCI_PLAY;
+    _this->hidden->MixSetupParms.ulDeviceType = MCI_DEVTYPE_WAVEFORM_AUDIO;
+    _this->hidden->MixSetupParms.pmixEvent = DARTEventFunc;
+    rc = mciSendCommand (iDeviceOrd, MCI_MIXSETUP,
+                         MCI_WAIT | MCI_MIXSETUP_QUERYMODE,
+                         &(_this->hidden->MixSetupParms), 0);
+    if (rc != MCIERR_SUCCESS) { // The device cannot handle this format!
+        // Close DART, and exit with error code!
+        mciSendCommand (iDeviceOrd, MCI_CLOSE, MCI_WAIT, &GenericParms, 0);
+        SDL_SetError ("Audio device doesn't support requested audio format");
+        return (-1);
+    }
+    // The device can handle this format, so initialize!
+    rc = mciSendCommand (iDeviceOrd, MCI_MIXSETUP,
+                         MCI_WAIT | MCI_MIXSETUP_INIT,
+                         &(_this->hidden->MixSetupParms), 0);
+    if (rc != MCIERR_SUCCESS) { // The device could not be opened!
+        // Close DART, and exit with error code!
+        mciSendCommand (iDeviceOrd, MCI_CLOSE, MCI_WAIT, &GenericParms, 0);
+        SDL_SetError ("Audio device could not be set up");
+        return (-1);
+    }
+    // Ok, the device is initialized.
+    // Now we should allocate buffers. For this, we need a place where
+    // the buffer descriptors will be:
+    _this->hidden->pMixBuffers =
+        (MCI_MIX_BUFFER *) SDL_malloc (sizeof (MCI_MIX_BUFFER) * iNumBufs);
+    if (!(_this->hidden->pMixBuffers)) {        // Not enough memory!
+        // Close DART, and exit with error code!
+        mciSendCommand (iDeviceOrd, MCI_CLOSE, MCI_WAIT, &GenericParms, 0);
+        SDL_SetError ("Not enough memory for audio buffer descriptors");
+        return (-1);
+    }
+    // Now that we have the place for buffer list, we can ask DART for the
+    // buffers!
+    _this->hidden->BufferParms.ulNumBuffers = iNumBufs; // Number of buffers
+    _this->hidden->BufferParms.ulBufferSize = iBufSize; // each with this size
+    _this->hidden->BufferParms.pBufList = _this->hidden->pMixBuffers;   // getting descriptorts into this list
+    // Allocate buffers!
+    rc = mciSendCommand (iDeviceOrd, MCI_BUFFER,
+                         MCI_WAIT | MCI_ALLOCATE_MEMORY,
+                         &(_this->hidden->BufferParms), 0);
+    if ((rc != MCIERR_SUCCESS)
+        || (iNumBufs != _this->hidden->BufferParms.ulNumBuffers)
+        || (_this->hidden->BufferParms.ulBufferSize == 0)) {    // Could not allocate memory!
+        // Close DART, and exit with error code!
+        SDL_free (_this->hidden->pMixBuffers);
+        _this->hidden->pMixBuffers = NULL;
+        mciSendCommand (iDeviceOrd, MCI_CLOSE, MCI_WAIT, &GenericParms, 0);
+        SDL_SetError ("DART could not allocate buffers");
+        return (-1);
+    }
+    // Ok, we have all the buffers allocated, let's mark them!
     {
-      pMixBufferDesc pBufferDesc = (pMixBufferDesc) SDL_malloc(sizeof(tMixBufferDesc));;
-      // Check if this buffer was really allocated by DART
-      if ((!(_this->hidden->pMixBuffers[i].pBuffer)) || (!pBufferDesc))
-      { // Wrong buffer!
-        // Close DART, and exit with error code!
-        // Free buffer descriptions
-        { int j;
-          for (j=0; j<i; j++) SDL_free((void *)(_this->hidden->pMixBuffers[j].ulUserParm));
+        int i;
+        for (i = 0; i < iNumBufs; i++) {
+            pMixBufferDesc pBufferDesc =
+                (pMixBufferDesc) SDL_malloc (sizeof (tMixBufferDesc));;
+            // Check if this buffer was really allocated by DART
+            if ((!(_this->hidden->pMixBuffers[i].pBuffer))
+                || (!pBufferDesc)) {    // Wrong buffer!
+                // Close DART, and exit with error code!
+                // Free buffer descriptions
+                {
+                    int j;
+                    for (j = 0; j < i; j++)
+                        SDL_free ((void *) (_this->hidden->pMixBuffers[j].
+                                            ulUserParm));
+                }
+                // and cleanup
+                mciSendCommand (iDeviceOrd, MCI_BUFFER,
+                                MCI_WAIT | MCI_DEALLOCATE_MEMORY,
+                                &(_this->hidden->BufferParms), 0);
+                SDL_free (_this->hidden->pMixBuffers);
+                _this->hidden->pMixBuffers = NULL;
+                mciSendCommand (iDeviceOrd, MCI_CLOSE, MCI_WAIT,
+                                &GenericParms, 0);
+                SDL_SetError ("Error at internal buffer check");
+                return (-1);
+            }
+            pBufferDesc->iBufferUsage = BUFFER_EMPTY;
+            pBufferDesc->pSDLAudioDevice = _this;
+
+            _this->hidden->pMixBuffers[i].ulBufferLength =
+                _this->hidden->BufferParms.ulBufferSize;
+            _this->hidden->pMixBuffers[i].ulUserParm = (ULONG) pBufferDesc;     // User parameter: Description of buffer
+            _this->hidden->pMixBuffers[i].ulFlags = 0;  // Some stuff should be flagged here for DART, like end of
+            // audio data, but as we will continously send
+            // audio data, there will be no end.:)
+            SDL_memset (_this->hidden->pMixBuffers[i].pBuffer, iSilence,
+                        iBufSize);
         }
-        // and cleanup
-        mciSendCommand(iDeviceOrd, MCI_BUFFER, MCI_WAIT | MCI_DEALLOCATE_MEMORY, &(_this->hidden->BufferParms), 0);
-        SDL_free(_this->hidden->pMixBuffers); _this->hidden->pMixBuffers = NULL;
-        mciSendCommand(iDeviceOrd, MCI_CLOSE, MCI_WAIT, &GenericParms, 0);
-        SDL_SetError("Error at internal buffer check");
-        return(-1);
-      }
-      pBufferDesc->iBufferUsage = BUFFER_EMPTY;
-      pBufferDesc->pSDLAudioDevice = _this;
-
-      _this->hidden->pMixBuffers[i].ulBufferLength = _this->hidden->BufferParms.ulBufferSize;
-      _this->hidden->pMixBuffers[i].ulUserParm = (ULONG) pBufferDesc; // User parameter: Description of buffer
-      _this->hidden->pMixBuffers[i].ulFlags = 0; // Some stuff should be flagged here for DART, like end of
-                                            // audio data, but as we will continously send
-                                            // audio data, there will be no end.:)
-      SDL_memset(_this->hidden->pMixBuffers[i].pBuffer, iSilence, iBufSize);
     }
-  }
-  _this->hidden->iNextFreeBuffer = 0;
-  _this->hidden->iLastPlayedBuf = -1;
-  // Create event semaphore
-  if (DosCreateEventSem(NULL, &(_this->hidden->hevAudioBufferPlayed), 0, FALSE)!=NO_ERROR)
-  {
-    // Could not create event semaphore!
+    _this->hidden->iNextFreeBuffer = 0;
+    _this->hidden->iLastPlayedBuf = -1;
+    // Create event semaphore
+    if (DosCreateEventSem
+        (NULL, &(_this->hidden->hevAudioBufferPlayed), 0, FALSE) != NO_ERROR)
     {
-      int i;
-      for (i=0; i<iNumBufs; i++) SDL_free((void *)(_this->hidden->pMixBuffers[i].ulUserParm));
+        // Could not create event semaphore!
+        {
+            int i;
+            for (i = 0; i < iNumBufs; i++)
+                SDL_free ((void *) (_this->hidden->pMixBuffers[i].
+                                    ulUserParm));
+        }
+        mciSendCommand (iDeviceOrd, MCI_BUFFER,
+                        MCI_WAIT | MCI_DEALLOCATE_MEMORY,
+                        &(_this->hidden->BufferParms), 0);
+        SDL_free (_this->hidden->pMixBuffers);
+        _this->hidden->pMixBuffers = NULL;
+        mciSendCommand (iDeviceOrd, MCI_CLOSE, MCI_WAIT, &GenericParms, 0);
+        SDL_SetError ("Could not create event semaphore");
+        return (-1);
     }
-    mciSendCommand(iDeviceOrd, MCI_BUFFER, MCI_WAIT | MCI_DEALLOCATE_MEMORY, &(_this->hidden->BufferParms), 0);
-    SDL_free(_this->hidden->pMixBuffers); _this->hidden->pMixBuffers = NULL;
-    mciSendCommand(iDeviceOrd, MCI_CLOSE, MCI_WAIT, &GenericParms, 0);
-    SDL_SetError("Could not create event semaphore");
-    return(-1);
-  }
+    // Store the new settings in global variables
+    _this->hidden->iCurrDeviceOrd = iDeviceOrd;
+    _this->hidden->iCurrFreq = iFreq;
+    _this->hidden->iCurrBits = iBits;
+    _this->hidden->iCurrChannels = iChannels;
+    _this->hidden->iCurrNumBufs = iNumBufs;
+    _this->hidden->iCurrBufSize = iBufSize;
 
-  // Store the new settings in global variables
-  _this->hidden->iCurrDeviceOrd = iDeviceOrd;
-  _this->hidden->iCurrFreq = iFreq;
-  _this->hidden->iCurrBits = iBits;
-  _this->hidden->iCurrChannels = iChannels;
-  _this->hidden->iCurrNumBufs = iNumBufs;
-  _this->hidden->iCurrBufSize = iBufSize;
-
-  return (0);
+    return (0);
 }
 
 
 
-void DART_ThreadInit(_THIS)
+void
+DART_ThreadInit (_THIS)
 {
-  return;
+    return;
 }
 
 /* This function waits until it is possible to write a full sound buffer */
-void DART_WaitAudio(_THIS)
+void
+DART_WaitAudio (_THIS)
 {
-  int i;
-  pMixBufferDesc pBufDesc;
-  ULONG ulPostCount;
+    int i;
+    pMixBufferDesc pBufDesc;
+    ULONG ulPostCount;
 
-  DosResetEventSem(_this->hidden->hevAudioBufferPlayed, &ulPostCount);
-  // If there is already an empty buffer, then return now!
-  for (i=0; i<_this->hidden->iCurrNumBufs; i++)
-  {
-    pBufDesc = (pMixBufferDesc) _this->hidden->pMixBuffers[i].ulUserParm;
-    if (pBufDesc->iBufferUsage == BUFFER_EMPTY)
-      return;
-  }
-  // If there is no empty buffer, wait for one to be empty!
-  DosWaitEventSem(_this->hidden->hevAudioBufferPlayed, 1000); // Wait max 1 sec!!! Important!
-  return;
+    DosResetEventSem (_this->hidden->hevAudioBufferPlayed, &ulPostCount);
+    // If there is already an empty buffer, then return now!
+    for (i = 0; i < _this->hidden->iCurrNumBufs; i++) {
+        pBufDesc = (pMixBufferDesc) _this->hidden->pMixBuffers[i].ulUserParm;
+        if (pBufDesc->iBufferUsage == BUFFER_EMPTY)
+            return;
+    }
+    // If there is no empty buffer, wait for one to be empty!
+    DosWaitEventSem (_this->hidden->hevAudioBufferPlayed, 1000);        // Wait max 1 sec!!! Important!
+    return;
 }
 
-void DART_PlayAudio(_THIS)
+void
+DART_PlayAudio (_THIS)
 {
-  int iFreeBuf = _this->hidden->iNextFreeBuffer;
-  pMixBufferDesc pBufDesc;
+    int iFreeBuf = _this->hidden->iNextFreeBuffer;
+    pMixBufferDesc pBufDesc;
 
-  pBufDesc = (pMixBufferDesc) _this->hidden->pMixBuffers[iFreeBuf].ulUserParm;
-  pBufDesc->iBufferUsage = BUFFER_USED;
-  // Send it to DART to be queued
-  _this->hidden->MixSetupParms.pmixWrite(_this->hidden->MixSetupParms.ulMixHandle,
-                                        &(_this->hidden->pMixBuffers[iFreeBuf]), 1);
+    pBufDesc =
+        (pMixBufferDesc) _this->hidden->pMixBuffers[iFreeBuf].ulUserParm;
+    pBufDesc->iBufferUsage = BUFFER_USED;
+    // Send it to DART to be queued
+    _this->hidden->MixSetupParms.pmixWrite (_this->hidden->MixSetupParms.
+                                            ulMixHandle,
+                                            &(_this->hidden->
+                                              pMixBuffers[iFreeBuf]), 1);
 
-  _this->hidden->iLastPlayedBuf = iFreeBuf;
-  iFreeBuf = (iFreeBuf+1) % _this->hidden->iCurrNumBufs;
-  _this->hidden->iNextFreeBuffer = iFreeBuf;
+    _this->hidden->iLastPlayedBuf = iFreeBuf;
+    iFreeBuf = (iFreeBuf + 1) % _this->hidden->iCurrNumBufs;
+    _this->hidden->iNextFreeBuffer = iFreeBuf;
 }
 
-Uint8 *DART_GetAudioBuf(_THIS)
+Uint8 *
+DART_GetAudioBuf (_THIS)
 {
-  int iFreeBuf;
-  Uint8 *pResult;
-  pMixBufferDesc pBufDesc;
+    int iFreeBuf;
+    Uint8 *pResult;
+    pMixBufferDesc pBufDesc;
+
+    if (_this) {
+        if (_this->hidden) {
+            iFreeBuf = _this->hidden->iNextFreeBuffer;
+            pBufDesc =
+                (pMixBufferDesc) _this->hidden->pMixBuffers[iFreeBuf].
+                ulUserParm;
 
-  if (_this)
-  {
-    if (_this->hidden)
-    {
-      iFreeBuf = _this->hidden->iNextFreeBuffer;
-      pBufDesc = (pMixBufferDesc) _this->hidden->pMixBuffers[iFreeBuf].ulUserParm;
-      
-      if (pBufDesc)
-      {
-        if (pBufDesc->iBufferUsage == BUFFER_EMPTY)
-        {
-          pResult = _this->hidden->pMixBuffers[iFreeBuf].pBuffer;
-          return pResult; 
-        }
-      } else
-        printf("[DART_GetAudioBuf] : ERROR! pBufDesc = %p\n", pBufDesc);
+            if (pBufDesc) {
+                if (pBufDesc->iBufferUsage == BUFFER_EMPTY) {
+                    pResult = _this->hidden->pMixBuffers[iFreeBuf].pBuffer;
+                    return pResult;
+                }
+            } else
+                printf ("[DART_GetAudioBuf] : ERROR! pBufDesc = %p\n",
+                        pBufDesc);
+        } else
+            printf ("[DART_GetAudioBuf] : ERROR! _this->hidden = %p\n",
+                    _this->hidden);
     } else
-      printf("[DART_GetAudioBuf] : ERROR! _this->hidden = %p\n", _this->hidden);
-  } else
-    printf("[DART_GetAudioBuf] : ERROR! _this = %p\n", _this);
-  return NULL;
+        printf ("[DART_GetAudioBuf] : ERROR! _this = %p\n", _this);
+    return NULL;
 }
 
-void DART_WaitDone(_THIS)
+void
+DART_WaitDone (_THIS)
 {
-  pMixBufferDesc pBufDesc;
-  ULONG ulPostCount;
-  APIRET rc;
+    pMixBufferDesc pBufDesc;
+    ULONG ulPostCount;
+    APIRET rc;
 
-  pBufDesc = (pMixBufferDesc) _this->hidden->pMixBuffers[_this->hidden->iLastPlayedBuf].ulUserParm;
-  rc = NO_ERROR;
-  while ((pBufDesc->iBufferUsage != BUFFER_EMPTY) && (rc==NO_ERROR))
-  {
-    DosResetEventSem(_this->hidden->hevAudioBufferPlayed, &ulPostCount);
-    rc = DosWaitEventSem(_this->hidden->hevAudioBufferPlayed, 1000); // 1 sec timeout! Important!
-  }
+    pBufDesc =
+        (pMixBufferDesc) _this->hidden->pMixBuffers[_this->hidden->
+                                                    iLastPlayedBuf].
+        ulUserParm;
+    rc = NO_ERROR;
+    while ((pBufDesc->iBufferUsage != BUFFER_EMPTY) && (rc == NO_ERROR)) {
+        DosResetEventSem (_this->hidden->hevAudioBufferPlayed, &ulPostCount);
+        rc = DosWaitEventSem (_this->hidden->hevAudioBufferPlayed, 1000);       // 1 sec timeout! Important!
+    }
 }
 
-void DART_CloseAudio(_THIS)
+void
+DART_CloseAudio (_THIS)
 {
-  MCI_GENERIC_PARMS GenericParms;
-  int rc;
+    MCI_GENERIC_PARMS GenericParms;
+    int rc;
 
-  // Stop DART playback
-  rc = mciSendCommand(_this->hidden->iCurrDeviceOrd, MCI_STOP, MCI_WAIT, &GenericParms, 0);
-  if (rc!=MCIERR_SUCCESS)
-  {
+    // Stop DART playback
+    rc = mciSendCommand (_this->hidden->iCurrDeviceOrd, MCI_STOP, MCI_WAIT,
+                         &GenericParms, 0);
+    if (rc != MCIERR_SUCCESS) {
 #ifdef SFX_DEBUG_BUILD
-    printf("Could not stop DART playback!\n");
-    fflush(stdout);
+        printf ("Could not stop DART playback!\n");
+        fflush (stdout);
 #endif
-  }
+    }
+    // Close event semaphore
+    DosCloseEventSem (_this->hidden->hevAudioBufferPlayed);
 
-  // Close event semaphore
-  DosCloseEventSem(_this->hidden->hevAudioBufferPlayed);
-
-  // Free memory of buffer descriptions
-  {
-    int i;
-    for (i=0; i<_this->hidden->iCurrNumBufs; i++) SDL_free((void *)(_this->hidden->pMixBuffers[i].ulUserParm));
-  }
+    // Free memory of buffer descriptions
+    {
+        int i;
+        for (i = 0; i < _this->hidden->iCurrNumBufs; i++)
+            SDL_free ((void *) (_this->hidden->pMixBuffers[i].ulUserParm));
+    }
 
-  // Deallocate buffers
-  rc = mciSendCommand(_this->hidden->iCurrDeviceOrd, MCI_BUFFER, MCI_WAIT | MCI_DEALLOCATE_MEMORY, &(_this->hidden->BufferParms), 0);
+    // Deallocate buffers
+    rc = mciSendCommand (_this->hidden->iCurrDeviceOrd, MCI_BUFFER,
+                         MCI_WAIT | MCI_DEALLOCATE_MEMORY,
+                         &(_this->hidden->BufferParms), 0);
 
-  // Free bufferlist
-  SDL_free(_this->hidden->pMixBuffers); _this->hidden->pMixBuffers = NULL;
+    // Free bufferlist
+    SDL_free (_this->hidden->pMixBuffers);
+    _this->hidden->pMixBuffers = NULL;
 
-  // Close dart
-  rc = mciSendCommand(_this->hidden->iCurrDeviceOrd, MCI_CLOSE, MCI_WAIT, &(GenericParms), 0);
+    // Close dart
+    rc = mciSendCommand (_this->hidden->iCurrDeviceOrd, MCI_CLOSE, MCI_WAIT,
+                         &(GenericParms), 0);
 }
 
 /* Audio driver bootstrap functions */
 
-int Audio_Available(void)
+int
+Audio_Available (void)
 {
-  return(1);
+    return (1);
 }
 
-void Audio_DeleteDevice(SDL_AudioDevice *device)
+void
+Audio_DeleteDevice (SDL_AudioDevice * device)
 {
-  SDL_free(device->hidden);
-  SDL_free(device);
+    SDL_free (device->hidden);
+    SDL_free (device);
 }
 
-SDL_AudioDevice *Audio_CreateDevice(int devindex)
+SDL_AudioDevice *
+Audio_CreateDevice (int devindex)
 {
-  SDL_AudioDevice *this;
+    SDL_AudioDevice *this;
 
-  /* Initialize all variables that we clean on shutdown */
-  this = (SDL_AudioDevice *)SDL_malloc(sizeof(SDL_AudioDevice));
-  if ( this )
-  {
-    SDL_memset(this, 0, (sizeof *this));
-    this->hidden = (struct SDL_PrivateAudioData *)
-      SDL_malloc((sizeof *this->hidden));
-  }
-  if ( (this == NULL) || (this->hidden == NULL) )
-  {
-    SDL_OutOfMemory();
-    if ( this )
-      SDL_free(this);
-    return(0);
-  }
-  SDL_memset(this->hidden, 0, (sizeof *this->hidden));
+    /* Initialize all variables that we clean on shutdown */
+    this = (SDL_AudioDevice *) SDL_malloc (sizeof (SDL_AudioDevice));
+    if (this) {
+        SDL_memset (this, 0, (sizeof *this));
+        this->hidden = (struct SDL_PrivateAudioData *)
+            SDL_malloc ((sizeof *this->hidden));
+    }
+    if ((this == NULL) || (this->hidden == NULL)) {
+        SDL_OutOfMemory ();
+        if (this)
+            SDL_free (this);
+        return (0);
+    }
+    SDL_memset (this->hidden, 0, (sizeof *this->hidden));
 
-  /* Set the function pointers */
-  this->OpenAudio = DART_OpenAudio;
-  this->ThreadInit = DART_ThreadInit;
-  this->WaitAudio = DART_WaitAudio;
-  this->PlayAudio = DART_PlayAudio;
-  this->GetAudioBuf = DART_GetAudioBuf;
-  this->WaitDone = DART_WaitDone;
-  this->CloseAudio = DART_CloseAudio;
+    /* Set the function pointers */
+    this->OpenAudio = DART_OpenAudio;
+    this->ThreadInit = DART_ThreadInit;
+    this->WaitAudio = DART_WaitAudio;
+    this->PlayAudio = DART_PlayAudio;
+    this->GetAudioBuf = DART_GetAudioBuf;
+    this->WaitDone = DART_WaitDone;
+    this->CloseAudio = DART_CloseAudio;
 
-  this->free = Audio_DeleteDevice;
+    this->free = Audio_DeleteDevice;
 
-  return this;
+    return this;
 }
 
 AudioBootStrap DART_bootstrap = {
-	"dart", "OS/2 Direct Audio RouTines (DART)",
-	Audio_Available, Audio_CreateDevice
+    "dart", "OS/2 Direct Audio RouTines (DART)",
+    Audio_Available, Audio_CreateDevice
 };
 
+/* vi: set ts=4 sw=4 expandtab: */