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wine/dlls/dsound/dsound_private.h
Eduard Permyakov 975d0632a1 dsound: Commit next audio chunk between play cursor and write cursor to playing. 
This region of the audio buffer is forbidden to be written to by the
DirectSound specification. The documentation states: "The write cursor
is the point after which it is safe to write data into the buffer. The
block between the play cursor and the write cursor is already committed
to be played, and cannot be changed safely." However, some applications
still do this, which has lead to audio glitches only when using the Wine
DirectSound implementation. Experiments showed that the native DirctSound
implementation will still play the old audio the first time around when the
buffer region gets overwritten. Use an approach of copying the next forbidden
region into a "committed buffer" to add the same behavior to the Wine
implementation.

Out of performance considerations, only copy data to the committed buffer
when we detect that an overwrite is possible (i.e. the current mixing
region of the buffer gets locked).

Signed-off-by: Eduard Permyakov <epermyakov@codeweavers.com>
Signed-off-by: Andrew Eikum <aeikum@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
2021-09-20 22:48:41 +02:00

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/* DirectSound
*
* Copyright 1998 Marcus Meissner
* Copyright 1998 Rob Riggs
* Copyright 2000-2001 TransGaming Technologies, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
/* Linux does not support better timing than 10ms */
#define DS_TIME_RES 2 /* Resolution of multimedia timer */
#define DS_TIME_DEL 10 /* Delay of multimedia timer callback, and duration of HEL fragment */
#include "wingdi.h"
#include "mmdeviceapi.h"
#include "audioclient.h"
#include "mediaobj.h"
#include "mmsystem.h"
#include "uuids.h"
#include "wine/list.h"
#define DS_MAX_CHANNELS 6
extern int ds_hel_buflen DECLSPEC_HIDDEN;
/*****************************************************************************
* Predeclare the interface implementation structures
*/
typedef struct IDirectSoundBufferImpl IDirectSoundBufferImpl;
typedef struct DirectSoundDevice DirectSoundDevice;
/* dsound_convert.h */
typedef float (*bitsgetfunc)(const IDirectSoundBufferImpl *, BYTE *, DWORD);
typedef void (*bitsputfunc)(const IDirectSoundBufferImpl *, DWORD, DWORD, float);
extern const bitsgetfunc getbpp[5] DECLSPEC_HIDDEN;
void putieee32(const IDirectSoundBufferImpl *dsb, DWORD pos, DWORD channel, float value) DECLSPEC_HIDDEN;
void putieee32_sum(const IDirectSoundBufferImpl *dsb, DWORD pos, DWORD channel, float value) DECLSPEC_HIDDEN;
void mixieee32(float *src, float *dst, unsigned samples) DECLSPEC_HIDDEN;
typedef void (*normfunc)(const void *, void *, unsigned);
extern const normfunc normfunctions[4] DECLSPEC_HIDDEN;
typedef struct _DSVOLUMEPAN
{
DWORD dwTotalAmpFactor[DS_MAX_CHANNELS];
LONG lVolume;
LONG lPan;
} DSVOLUMEPAN,*PDSVOLUMEPAN;
typedef struct DSFilter {
GUID guid;
IMediaObject* obj;
IMediaObjectInPlace* inplace;
} DSFilter;
/*****************************************************************************
* IDirectSoundDevice implementation structure
*/
struct DirectSoundDevice
{
LONG ref;
GUID guid;
DSCAPS drvcaps;
DWORD priolevel, sleeptime;
PWAVEFORMATEX pwfx, primary_pwfx;
LPBYTE buffer;
DWORD writelead, buflen, ac_frames, frag_frames, playpos, pad, stopped;
int nrofbuffers;
IDirectSoundBufferImpl** buffers;
SRWLOCK buffer_list_lock;
CRITICAL_SECTION mixlock;
IDirectSoundBufferImpl *primary;
DWORD speaker_config;
float speaker_angles[DS_MAX_CHANNELS];
int speaker_num[DS_MAX_CHANNELS];
int num_speakers;
int lfe_channel;
float *tmp_buffer, *cp_buffer;
DWORD tmp_buffer_len, cp_buffer_len;
DSVOLUMEPAN volpan;
normfunc normfunction;
/* DirectSound3DListener fields */
DS3DLISTENER ds3dl;
BOOL ds3dl_need_recalc;
IMMDevice *mmdevice;
IAudioClient *client;
IAudioStreamVolume *volume;
IAudioRenderClient *render;
HANDLE sleepev, thread;
struct list entry;
};
/* reference counted buffer memory for duplicated buffer memory */
typedef struct BufferMemory
{
LONG ref;
LONG lockedbytes;
LPBYTE memory;
struct list buffers;
} BufferMemory;
HRESULT DirectSoundDevice_AddBuffer(
DirectSoundDevice * device,
IDirectSoundBufferImpl * pDSB) DECLSPEC_HIDDEN;
void DirectSoundDevice_RemoveBuffer(DirectSoundDevice * device, IDirectSoundBufferImpl * pDSB) DECLSPEC_HIDDEN;
/*****************************************************************************
* IDirectSoundBuffer implementation structure
*/
struct IDirectSoundBufferImpl
{
IDirectSoundBuffer8 IDirectSoundBuffer8_iface;
IDirectSoundNotify IDirectSoundNotify_iface;
IDirectSound3DListener IDirectSound3DListener_iface; /* only primary buffer */
IDirectSound3DBuffer IDirectSound3DBuffer_iface; /* only secondary buffer */
IKsPropertySet IKsPropertySet_iface;
LONG numIfaces; /* "in use interfaces" refcount */
LONG ref, refn, ref3D, refiks;
/* IDirectSoundBufferImpl fields */
DirectSoundDevice* device;
SRWLOCK lock;
PWAVEFORMATEX pwfx;
BufferMemory* buffer;
DWORD playflags,state,leadin;
DWORD writelead,buflen;
DWORD nAvgBytesPerSec;
DWORD freq;
DSVOLUMEPAN volpan;
DSBUFFERDESC dsbd;
/* used for frequency conversion (PerfectPitch) */
ULONG freqneeded;
DWORD firstep;
float firgain;
LONG64 freqAdjustNum,freqAdjustDen;
LONG64 freqAccNum;
/* used for mixing */
DWORD sec_mixpos;
/* Holds a copy of the next 'writelead' bytes, to be used for mixing. This makes it
* so that these bytes get played once even if this region of the buffer gets overwritten,
* which is more in-line with native DirectSound behavior. */
BOOL use_committed;
LPVOID committedbuff;
DWORD committed_mixpos;
/* IDirectSoundNotify fields */
LPDSBPOSITIONNOTIFY notifies;
int nrofnotifies;
/* DirectSound3DBuffer fields */
DS3DBUFFER ds3db_ds3db;
LONG ds3db_lVolume;
BOOL ds3db_need_recalc;
/* Used for bit depth conversion */
int mix_channels;
bitsgetfunc get, get_aux;
bitsputfunc put, put_aux;
int num_filters;
DSFilter* filters;
struct list entry;
};
float get_mono(const IDirectSoundBufferImpl *dsb, BYTE *base, DWORD channel) DECLSPEC_HIDDEN;
void put_mono2stereo(const IDirectSoundBufferImpl *dsb, DWORD pos, DWORD channel, float value) DECLSPEC_HIDDEN;
void put_mono2quad(const IDirectSoundBufferImpl *dsb, DWORD pos, DWORD channel, float value) DECLSPEC_HIDDEN;
void put_stereo2quad(const IDirectSoundBufferImpl *dsb, DWORD pos, DWORD channel, float value) DECLSPEC_HIDDEN;
void put_mono2surround51(const IDirectSoundBufferImpl *dsb, DWORD pos, DWORD channel, float value) DECLSPEC_HIDDEN;
void put_stereo2surround51(const IDirectSoundBufferImpl *dsb, DWORD pos, DWORD channel, float value) DECLSPEC_HIDDEN;
void put_surround512stereo(const IDirectSoundBufferImpl *dsb, DWORD pos, DWORD channel, float value) DECLSPEC_HIDDEN;
void put_surround712stereo(const IDirectSoundBufferImpl *dsb, DWORD pos, DWORD channel, float value) DECLSPEC_HIDDEN;
void put_quad2stereo(const IDirectSoundBufferImpl *dsb, DWORD pos, DWORD channel, float value) DECLSPEC_HIDDEN;
HRESULT secondarybuffer_create(DirectSoundDevice *device, const DSBUFFERDESC *dsbd,
IDirectSoundBuffer **buffer) DECLSPEC_HIDDEN;
HRESULT IDirectSoundBufferImpl_Duplicate(
DirectSoundDevice *device,
IDirectSoundBufferImpl **ppdsb,
IDirectSoundBufferImpl *pdsb) DECLSPEC_HIDDEN;
void secondarybuffer_destroy(IDirectSoundBufferImpl *This) DECLSPEC_HIDDEN;
extern const IDirectSound3DListenerVtbl ds3dlvt DECLSPEC_HIDDEN;
extern const IDirectSound3DBufferVtbl ds3dbvt DECLSPEC_HIDDEN;
extern const IKsPropertySetVtbl iksbvt DECLSPEC_HIDDEN;
HRESULT IKsPrivatePropertySetImpl_Create(REFIID riid, void **ppv) DECLSPEC_HIDDEN;
/*******************************************************************************
*/
/* dsound.c */
HRESULT DSOUND_Create(REFIID riid, void **ppv) DECLSPEC_HIDDEN;
HRESULT DSOUND_Create8(REFIID riid, void **ppv) DECLSPEC_HIDDEN;
HRESULT IDirectSoundImpl_Create(IUnknown *outer_unk, REFIID riid, void **ppv, BOOL has_ds8) DECLSPEC_HIDDEN;
void DSOUND_ParseSpeakerConfig(DirectSoundDevice *device) DECLSPEC_HIDDEN;
/* primary.c */
HRESULT DSOUND_PrimaryDestroy(DirectSoundDevice *device) DECLSPEC_HIDDEN;
HRESULT DSOUND_PrimaryPlay(DirectSoundDevice *device) DECLSPEC_HIDDEN;
HRESULT DSOUND_PrimaryStop(DirectSoundDevice *device) DECLSPEC_HIDDEN;
LPWAVEFORMATEX DSOUND_CopyFormat(LPCWAVEFORMATEX wfex) DECLSPEC_HIDDEN;
HRESULT DSOUND_ReopenDevice(DirectSoundDevice *device, BOOL forcewave) DECLSPEC_HIDDEN;
HRESULT primarybuffer_create(DirectSoundDevice *device, IDirectSoundBufferImpl **ppdsb,
const DSBUFFERDESC *dsbd) DECLSPEC_HIDDEN;
void primarybuffer_destroy(IDirectSoundBufferImpl *This) DECLSPEC_HIDDEN;
HRESULT primarybuffer_SetFormat(DirectSoundDevice *device, LPCWAVEFORMATEX wfex) DECLSPEC_HIDDEN;
LONG capped_refcount_dec(LONG *ref) DECLSPEC_HIDDEN;
/* duplex.c */
HRESULT DSOUND_FullDuplexCreate(REFIID riid, void **ppv) DECLSPEC_HIDDEN;
/* mixer.c */
void DSOUND_CheckEvent(const IDirectSoundBufferImpl *dsb, DWORD playpos, int len) DECLSPEC_HIDDEN;
void DSOUND_RecalcVolPan(PDSVOLUMEPAN volpan) DECLSPEC_HIDDEN;
void DSOUND_AmpFactorToVolPan(PDSVOLUMEPAN volpan) DECLSPEC_HIDDEN;
void DSOUND_RecalcFormat(IDirectSoundBufferImpl *dsb) DECLSPEC_HIDDEN;
DWORD DSOUND_secpos_to_bufpos(const IDirectSoundBufferImpl *dsb, DWORD secpos, DWORD secmixpos, float *overshot) DECLSPEC_HIDDEN;
DWORD CALLBACK DSOUND_mixthread(void *ptr) DECLSPEC_HIDDEN;
/* sound3d.c */
void DSOUND_Calc3DBuffer(IDirectSoundBufferImpl *dsb) DECLSPEC_HIDDEN;
/* capture.c */
HRESULT DSOUND_CaptureCreate(REFIID riid, void **ppv) DECLSPEC_HIDDEN;
HRESULT DSOUND_CaptureCreate8(REFIID riid, void **ppv) DECLSPEC_HIDDEN;
HRESULT IDirectSoundCaptureImpl_Create(IUnknown *outer_unk, REFIID riid, void **ppv, BOOL has_dsc8) DECLSPEC_HIDDEN;
#define STATE_STOPPED 0
#define STATE_STARTING 1
#define STATE_PLAYING 2
#define STATE_CAPTURING 2
#define STATE_STOPPING 3
extern CRITICAL_SECTION DSOUND_renderers_lock DECLSPEC_HIDDEN;
extern CRITICAL_SECTION DSOUND_capturers_lock DECLSPEC_HIDDEN;
extern struct list DSOUND_capturers DECLSPEC_HIDDEN;
extern struct list DSOUND_renderers DECLSPEC_HIDDEN;
extern GUID DSOUND_renderer_guids[MAXWAVEDRIVERS] DECLSPEC_HIDDEN;
extern GUID DSOUND_capture_guids[MAXWAVEDRIVERS] DECLSPEC_HIDDEN;
extern const WCHAR wine_vxd_drv[] DECLSPEC_HIDDEN;
void setup_dsound_options(void) DECLSPEC_HIDDEN;
HRESULT get_mmdevice(EDataFlow flow, const GUID *tgt, IMMDevice **device) DECLSPEC_HIDDEN;
BOOL DSOUND_check_supported(IAudioClient *client, DWORD rate,
DWORD depth, WORD channels) DECLSPEC_HIDDEN;
HRESULT enumerate_mmdevices(EDataFlow flow, GUID *guids,
LPDSENUMCALLBACKW cb, void *user) DECLSPEC_HIDDEN;
static inline WCHAR *strdupW( const WCHAR *str )
{
size_t size;
WCHAR *ret;
if (!str) return NULL;
size = (lstrlenW( str ) + 1) * sizeof(WCHAR);
ret = HeapAlloc( GetProcessHeap(), 0, size );
if (ret) memcpy( ret, str, size );
return ret;
}
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