235 lines
7.9 KiB
C
235 lines
7.9 KiB
C
/* DirectSound
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*
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* Copyright 1998 Marcus Meissner
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* Copyright 1998 Rob Riggs
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* Copyright 2000-2001 TransGaming Technologies, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/* Linux does not support better timing than 10ms */
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#define DS_TIME_RES 10 /* Resolution of multimedia timer */
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#define DS_TIME_DEL 10 /* Delay of multimedia timer callback, and duration of HEL fragment */
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#define DS_HEL_FRAGS 48 /* HEL only: number of waveOut fragments in primary buffer
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* (changing this won't help you) */
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extern int ds_emuldriver;
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extern int ds_hel_margin;
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extern int ds_hel_queue;
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extern int ds_snd_queue_max;
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extern int ds_snd_queue_min;
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/*****************************************************************************
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* Predeclare the interface implementation structures
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*/
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typedef struct IDirectSoundImpl IDirectSoundImpl;
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typedef struct IDirectSoundBufferImpl IDirectSoundBufferImpl;
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typedef struct IDirectSoundNotifyImpl IDirectSoundNotifyImpl;
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typedef struct IDirectSound3DListenerImpl IDirectSound3DListenerImpl;
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typedef struct IDirectSound3DBufferImpl IDirectSound3DBufferImpl;
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typedef struct IKsPropertySetImpl IKsPropertySetImpl;
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typedef struct PrimaryBufferImpl PrimaryBufferImpl;
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/*****************************************************************************
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* IDirectSound implementation structure
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*/
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struct IDirectSoundImpl
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{
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/* IUnknown fields */
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ICOM_VFIELD(IDirectSound8);
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DWORD ref;
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/* IDirectSoundImpl fields */
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PIDSDRIVER driver;
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DSDRIVERDESC drvdesc;
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DSDRIVERCAPS drvcaps;
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DWORD priolevel;
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WAVEFORMATEX wfx; /* current main waveformat */
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HWAVEOUT hwo;
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LPWAVEHDR pwave[DS_HEL_FRAGS];
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UINT timerID, pwplay, pwwrite, pwqueue, prebuf, precount;
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DWORD fraglen;
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PIDSDRIVERBUFFER hwbuf;
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LPBYTE buffer;
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DWORD writelead, buflen, state, playpos, mixpos;
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BOOL need_remix;
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int nrofbuffers;
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IDirectSoundBufferImpl** buffers;
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IDirectSound3DListenerImpl* listener;
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RTL_RWLOCK lock;
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CRITICAL_SECTION mixlock;
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DSVOLUMEPAN volpan;
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};
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/*****************************************************************************
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* IDirectSoundBuffer implementation structure
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*/
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struct IDirectSoundBufferImpl
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{
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/* FIXME: document */
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/* IUnknown fields */
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ICOM_VFIELD(IDirectSoundBuffer8);
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DWORD ref;
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/* IDirectSoundBufferImpl fields */
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IDirectSoundImpl* dsound;
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IDirectSoundBufferImpl* parent; /* for duplicates */
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IDirectSound3DBufferImpl* ds3db;
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IKsPropertySetImpl* iks;
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CRITICAL_SECTION lock;
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PIDSDRIVERBUFFER hwbuf;
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WAVEFORMATEX wfx;
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LPBYTE buffer;
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DWORD playflags,state,leadin;
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DWORD playpos,startpos,writelead,buflen;
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DWORD nAvgBytesPerSec;
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DWORD freq;
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DSVOLUMEPAN volpan, cvolpan;
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DSBUFFERDESC dsbd;
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/* used for frequency conversion (PerfectPitch) */
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ULONG freqAdjust, freqAcc;
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/* used for intelligent (well, sort of) prebuffering */
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DWORD probably_valid_to, last_playpos;
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DWORD primary_mixpos, buf_mixpos;
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BOOL need_remix;
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/* IDirectSoundNotifyImpl fields */
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LPDSBPOSITIONNOTIFY notifies;
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int nrofnotifies;
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};
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HRESULT WINAPI SecondaryBuffer_Create(
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IDirectSoundImpl *This,
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IDirectSoundBufferImpl **pdsb,
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LPDSBUFFERDESC dsbd);
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struct PrimaryBufferImpl {
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ICOM_VFIELD(IDirectSoundBuffer8);
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DWORD ref;
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IDirectSoundImpl* dsound;
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DSBUFFERDESC dsbd;
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};
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HRESULT WINAPI PrimaryBuffer_Create(
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IDirectSoundImpl *This,
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PrimaryBufferImpl **pdsb,
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LPDSBUFFERDESC dsbd);
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/*****************************************************************************
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* IDirectSoundNotify implementation structure
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*/
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struct IDirectSoundNotifyImpl
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{
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/* IUnknown fields */
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ICOM_VFIELD(IDirectSoundNotify);
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DWORD ref;
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/* IDirectSoundNotifyImpl fields */
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IDirectSoundBufferImpl* dsb;
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};
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/*****************************************************************************
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* IDirectSound3DListener implementation structure
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*/
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struct IDirectSound3DListenerImpl
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{
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/* IUnknown fields */
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ICOM_VFIELD(IDirectSound3DListener);
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DWORD ref;
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/* IDirectSound3DListenerImpl fields */
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PrimaryBufferImpl* dsb;
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DS3DLISTENER ds3dl;
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CRITICAL_SECTION lock;
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BOOL need_recalc;
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};
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HRESULT WINAPI IDirectSound3DListenerImpl_Create(
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PrimaryBufferImpl *This,
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IDirectSound3DListenerImpl **pdsl);
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/*****************************************************************************
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* IKsPropertySet implementation structure
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*/
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struct IKsPropertySetImpl
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{
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/* IUnknown fields */
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ICOM_VFIELD(IKsPropertySet);
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DWORD ref;
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/* IKsPropertySetImpl fields */
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IDirectSoundBufferImpl* dsb;
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};
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HRESULT WINAPI IKsPropertySetImpl_Create(
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IDirectSoundBufferImpl *This,
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IKsPropertySetImpl **piks);
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/*****************************************************************************
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* IDirectSound3DBuffer implementation structure
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*/
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struct IDirectSound3DBufferImpl
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{
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/* IUnknown fields */
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ICOM_VFIELD(IDirectSound3DBuffer);
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DWORD ref;
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/* IDirectSound3DBufferImpl fields */
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IDirectSoundBufferImpl* dsb;
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DS3DBUFFER ds3db;
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LONG lVolume;
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CRITICAL_SECTION lock;
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BOOL need_recalc;
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};
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HRESULT WINAPI IDirectSound3DBufferImpl_Create(
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IDirectSoundBufferImpl *This,
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IDirectSound3DBufferImpl **pds3db);
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void DSOUND_RecalcVolPan(PDSVOLUMEPAN volpan);
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void DSOUND_RecalcFormat(IDirectSoundBufferImpl *dsb);
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/* primary.c */
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HRESULT DSOUND_PrimaryCreate(IDirectSoundImpl *This);
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HRESULT DSOUND_PrimaryDestroy(IDirectSoundImpl *This);
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HRESULT DSOUND_PrimaryPlay(IDirectSoundImpl *This);
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HRESULT DSOUND_PrimaryStop(IDirectSoundImpl *This);
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HRESULT DSOUND_PrimaryGetPosition(IDirectSoundImpl *This, LPDWORD playpos, LPDWORD writepos);
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/* buffer.c */
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DWORD DSOUND_CalcPlayPosition(IDirectSoundBufferImpl *This,
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DWORD state, DWORD pplay, DWORD pwrite, DWORD pmix, DWORD bmix);
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/* mixer.c */
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void DSOUND_CheckEvent(IDirectSoundBufferImpl *dsb, int len);
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void DSOUND_ForceRemix(IDirectSoundBufferImpl *dsb);
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void DSOUND_MixCancelAt(IDirectSoundBufferImpl *dsb, DWORD buf_writepos);
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void DSOUND_WaveQueue(IDirectSoundImpl *dsound, DWORD mixq);
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void DSOUND_PerformMix(void);
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void CALLBACK DSOUND_timer(UINT timerID, UINT msg, DWORD dwUser, DWORD dw1, DWORD dw2);
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void CALLBACK DSOUND_callback(HWAVEOUT hwo, UINT msg, DWORD dwUser, DWORD dw1, DWORD dw2);
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#define STATE_STOPPED 0
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#define STATE_STARTING 1
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#define STATE_PLAYING 2
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#define STATE_STOPPING 3
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#define DSOUND_FREQSHIFT (14)
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extern IDirectSoundImpl* dsound;
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struct PrimaryBuffer {
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DWORD ref;
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PIDSDRIVERBUFFER hwbuf;
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DWORD state;
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};
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