Sweden-Number/dlls/winmm/wineoss/audio.h

182 lines
6.6 KiB
C

/*
* Sample Wine Driver for Open Sound System (featured in Linux and FreeBSD)
*
* Copyright 1994 Martin Ayotte
* 1999 Eric Pouech (async playing in waveOut/waveIn)
* 2000 Eric Pouech (loops in waveOut)
* 2002 Eric Pouech (full duplex)
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifdef HAVE_OSS
/* unless someone makes a wineserver kernel module, Unix pipes are faster than win32 events */
#define USE_PIPE_SYNC
#define MAX_WAVEDRV (6)
/* states of the playing device */
#define WINE_WS_PLAYING 0
#define WINE_WS_PAUSED 1
#define WINE_WS_STOPPED 2
#define WINE_WS_CLOSED 3
/* events to be send to device */
enum win_wm_message {
WINE_WM_PAUSING = WM_USER + 1, WINE_WM_RESTARTING, WINE_WM_RESETTING, WINE_WM_HEADER,
WINE_WM_UPDATE, WINE_WM_BREAKLOOP, WINE_WM_CLOSING, WINE_WM_STARTING, WINE_WM_STOPPING
};
#ifdef USE_PIPE_SYNC
#define SIGNAL_OMR(omr) do { int x = 0; write((omr)->msg_pipe[1], &x, sizeof(x)); } while (0)
#define CLEAR_OMR(omr) do { int x = 0; read((omr)->msg_pipe[0], &x, sizeof(x)); } while (0)
#define RESET_OMR(omr) do { } while (0)
#define WAIT_OMR(omr, sleep) \
do { struct pollfd pfd; pfd.fd = (omr)->msg_pipe[0]; \
pfd.events = POLLIN; poll(&pfd, 1, sleep); } while (0)
#else
#define SIGNAL_OMR(omr) do { SetEvent((omr)->msg_event); } while (0)
#define CLEAR_OMR(omr) do { } while (0)
#define RESET_OMR(omr) do { ResetEvent((omr)->msg_event); } while (0)
#define WAIT_OMR(omr, sleep) \
do { WaitForSingleObject((omr)->msg_event, sleep); } while (0)
#endif
typedef struct {
enum win_wm_message msg; /* message identifier */
DWORD param; /* parameter for this message */
HANDLE hEvent; /* if message is synchronous, handle of event for synchro */
} OSS_MSG;
/* implement an in-process message ring for better performance
* (compared to passing thru the server)
* this ring will be used by the input (resp output) record (resp playback) routine
*/
#define OSS_RING_BUFFER_INCREMENT 64
typedef struct {
int ring_buffer_size;
OSS_MSG * messages;
int msg_tosave;
int msg_toget;
#ifdef USE_PIPE_SYNC
int msg_pipe[2];
#else
HANDLE msg_event;
#endif
CRITICAL_SECTION msg_crst;
} OSS_MSG_RING;
typedef struct tagOSS_DEVICE {
char* dev_name;
char* mixer_name;
char* interface_name;
unsigned open_count;
WAVEOUTCAPSA out_caps;
WAVEOUTCAPSA duplex_out_caps;
WAVEINCAPSA in_caps;
DWORD in_caps_support;
unsigned open_access;
int fd;
DWORD owner_tid;
int sample_rate;
int stereo;
int format;
unsigned audio_fragment;
BOOL full_duplex;
BOOL bTriggerSupport;
BOOL bOutputEnabled;
BOOL bInputEnabled;
DSDRIVERDESC ds_desc;
DSDRIVERCAPS ds_caps;
DSCDRIVERCAPS dsc_caps;
} OSS_DEVICE;
typedef struct {
OSS_DEVICE* ossdev;
volatile int state; /* one of the WINE_WS_ manifest constants */
WAVEOPENDESC waveDesc;
WORD wFlags;
WAVEFORMATPCMEX waveFormat;
DWORD volume;
/* OSS information */
DWORD dwFragmentSize; /* size of OSS buffer fragment */
DWORD dwBufferSize; /* size of whole OSS buffer in bytes */
LPWAVEHDR lpQueuePtr; /* start of queued WAVEHDRs (waiting to be notified) */
LPWAVEHDR lpPlayPtr; /* start of not yet fully played buffers */
DWORD dwPartialOffset; /* Offset of not yet written bytes in lpPlayPtr */
LPWAVEHDR lpLoopPtr; /* pointer of first buffer in loop, if any */
DWORD dwLoops; /* private copy of loop counter */
DWORD dwPlayedTotal; /* number of bytes actually played since opening */
DWORD dwWrittenTotal; /* number of bytes written to OSS buffer since opening */
BOOL bNeedPost; /* whether audio still needs to be physically started */
/* synchronization stuff */
HANDLE hStartUpEvent;
HANDLE hThread;
DWORD dwThreadID;
OSS_MSG_RING msgRing;
} WINE_WAVEOUT;
typedef struct {
OSS_DEVICE* ossdev;
volatile int state;
DWORD dwFragmentSize; /* OpenSound '/dev/dsp' give us that size */
WAVEOPENDESC waveDesc;
WORD wFlags;
WAVEFORMATPCMEX waveFormat;
LPWAVEHDR lpQueuePtr;
DWORD dwTotalRecorded;
DWORD dwTotalRead;
/* synchronization stuff */
HANDLE hThread;
DWORD dwThreadID;
HANDLE hStartUpEvent;
OSS_MSG_RING msgRing;
} WINE_WAVEIN;
extern OSS_DEVICE OSS_Devices[MAX_WAVEDRV];
extern WINE_WAVEOUT WOutDev[MAX_WAVEDRV];
extern WINE_WAVEIN WInDev[MAX_WAVEDRV];
extern unsigned numOutDev;
extern unsigned numInDev;
extern int getEnables(OSS_DEVICE *ossdev);
extern void copy_format(LPWAVEFORMATEX wf1, LPWAVEFORMATPCMEX wf2);
extern DWORD OSS_OpenDevice(OSS_DEVICE* ossdev, unsigned req_access,
int* frag, int strict_format,
int sample_rate, int stereo, int fmt);
extern void OSS_CloseDevice(OSS_DEVICE* ossdev);
extern DWORD wodOpen(WORD wDevID, LPWAVEOPENDESC lpDesc, DWORD dwFlags);
extern DWORD wodSetVolume(WORD wDevID, DWORD dwParam);
extern DWORD widOpen(WORD wDevID, LPWAVEOPENDESC lpDesc, DWORD dwFlags);
/* dscapture.c */
extern DWORD widDsCreate(UINT wDevID, PIDSCDRIVER* drv);
extern DWORD widDsDesc(UINT wDevID, PDSDRIVERDESC desc);
/* dsrender.c */
extern DWORD wodDsCreate(UINT wDevID, PIDSDRIVER* drv);
extern DWORD wodDsDesc(UINT wDevID, PDSDRIVERDESC desc);
#endif /* HAVE_OSS */