Sweden-Number/dlls/winealsa.drv/alsa.h

210 lines
7.5 KiB
C

/* Definition for ALSA drivers : wine multimedia system
*
* Copyright (C) 2002 Erich Pouech
* Copyright (C) 2002 Marco Pietrobono
* Copyright (C) 2003 Christian Costa
* Copyright (C) 2007 Maarten Lankhorst
*
* 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
*/
#ifndef __WINE_CONFIG_H
# error You must include config.h to use this header
#endif
#if defined(HAVE_ALSA) && !defined(__ALSA_H)
#define __ALSA_H
#ifdef interface
#undef interface
#endif
#define ALSA_PCM_NEW_HW_PARAMS_API
#define ALSA_PCM_NEW_SW_PARAMS_API
#ifdef HAVE_ALSA_ASOUNDLIB_H
#include <alsa/asoundlib.h>
#elif defined(HAVE_SYS_ASOUNDLIB_H)
#include <sys/asoundlib.h>
#endif
#ifdef HAVE_SYS_ERRNO_H
#include <sys/errno.h>
#endif
#include "mmreg.h"
#include "dsound.h"
#include "dsdriver.h"
#include "ks.h"
#include "ksmedia.h"
#include "ksguid.h"
/* state diagram for waveOut writing:
*
* +---------+-------------+---------------+---------------------------------+
* | state | function | event | new state |
* +---------+-------------+---------------+---------------------------------+
* | | open() | | STOPPED |
* | PAUSED | write() | | PAUSED |
* | STOPPED | write() | <thrd create> | PLAYING |
* | PLAYING | write() | HEADER | PLAYING |
* | (other) | write() | <error> | |
* | (any) | pause() | PAUSING | PAUSED |
* | PAUSED | restart() | RESTARTING | PLAYING (if no thrd => STOPPED) |
* | (any) | reset() | RESETTING | STOPPED |
* | (any) | close() | CLOSING | CLOSED |
* +---------+-------------+---------------+---------------------------------+
*/
/* 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
};
typedef struct {
enum win_wm_message msg; /* message identifier */
DWORD_PTR param; /* parameter for this message */
HANDLE hEvent; /* if message is synchronous, handle of event for synchro */
} ALSA_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
*/
typedef struct {
ALSA_MSG * messages;
int ring_buffer_size;
int msg_tosave;
int msg_toget;
/* Either pipe or event is used, but that is defined in alsa.c,
* since this is a global header we define both here */
int msg_pipe[2];
HANDLE msg_event;
CRITICAL_SECTION msg_crst;
} ALSA_MSG_RING;
typedef struct {
volatile int state; /* one of the WINE_WS_ manifest constants */
WAVEOPENDESC waveDesc;
WORD wFlags;
WAVEFORMATPCMEX format;
char* pcmname; /* string name of alsa PCM device */
char* ctlname; /* string name of alsa control device */
char interface_name[MAXPNAMELEN * 2];
snd_pcm_t* pcm; /* handle to ALSA playback device */
snd_pcm_hw_params_t * hw_params;
DWORD dwBufferSize; /* size of whole ALSA buffer in bytes */
LPWAVEHDR lpQueuePtr; /* start of queued WAVEHDRs (waiting to be notified) */
LPWAVEHDR lpPlayPtr; /* start of not yet fully played buffers */
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 ALSA buffer since opening */
/* synchronization stuff */
HANDLE hStartUpEvent;
HANDLE hThread;
DWORD dwThreadID;
ALSA_MSG_RING msgRing;
/* DirectSound stuff */
DSDRIVERDESC ds_desc;
DSDRIVERCAPS ds_caps;
/* Waveout only fields */
WAVEOUTCAPSW outcaps;
snd_hctl_t * hctl; /* control handle for the playback volume */
snd_pcm_sframes_t (*write)(snd_pcm_t *, const void *, snd_pcm_uframes_t );
DWORD dwPartialOffset; /* Offset of not yet written bytes in lpPlayPtr */
/* Wavein only fields */
WAVEINCAPSW incaps;
DWORD dwSupport;
snd_pcm_sframes_t (*read)(snd_pcm_t *, void *, snd_pcm_uframes_t );
DWORD dwPeriodSize; /* size of OSS buffer period */
DWORD dwTotalRecorded;
} WINE_WAVEDEV;
/*----------------------------------------------------------------------------
** Global array of output and input devices, initialized via ALSA_WaveInit
*/
#define WAVEDEV_ALLOC_EXTENT_SIZE 10
/* wavein.c */
extern WINE_WAVEDEV *WInDev;
extern DWORD ALSA_WidNumMallocedDevs;
extern DWORD ALSA_WidNumDevs;
/* waveout.c */
extern WINE_WAVEDEV *WOutDev;
extern DWORD ALSA_WodNumMallocedDevs;
extern DWORD ALSA_WodNumDevs;
/* alsa.c */
int ALSA_InitRingMessage(ALSA_MSG_RING* omr);
int ALSA_DestroyRingMessage(ALSA_MSG_RING* omr);
void ALSA_ResetRingMessage(ALSA_MSG_RING* omr);
void ALSA_WaitRingMessage(ALSA_MSG_RING* omr, DWORD sleep);
int ALSA_AddRingMessage(ALSA_MSG_RING* omr, enum win_wm_message msg, DWORD_PTR param, BOOL wait);
int ALSA_RetrieveRingMessage(ALSA_MSG_RING* omr, enum win_wm_message *msg, DWORD_PTR *param, HANDLE *hEvent);
int ALSA_PeekRingMessage(ALSA_MSG_RING* omr, enum win_wm_message *msg, DWORD_PTR *param, HANDLE *hEvent);
int ALSA_CheckSetVolume(snd_hctl_t *hctl, int *out_left, int *out_right, int *out_min, int *out_max, int *out_step, int *new_left, int *new_right);
const char * ALSA_getCmdString(enum win_wm_message msg);
const char * ALSA_getMessage(UINT msg);
const char * ALSA_getFormat(WORD wFormatTag);
BOOL ALSA_NearMatch(int rate1, int rate2);
DWORD ALSA_bytes_to_mmtime(LPMMTIME lpTime, DWORD position, WAVEFORMATPCMEX* format);
void ALSA_TraceParameters(snd_pcm_hw_params_t * hw_params, snd_pcm_sw_params_t * sw, int full);
int ALSA_XRUNRecovery(WINE_WAVEDEV * wwo, int err);
void ALSA_copyFormat(LPWAVEFORMATEX wf1, LPWAVEFORMATPCMEX wf2);
BOOL ALSA_supportedFormat(LPWAVEFORMATEX wf);
/* dscapture.c */
DWORD widDsCreate(UINT wDevID, PIDSCDRIVER* drv);
DWORD widDsDesc(UINT wDevID, PDSDRIVERDESC desc);
/* dsoutput.c */
DWORD wodDsCreate(UINT wDevID, PIDSDRIVER* drv);
DWORD wodDsDesc(UINT wDevID, PDSDRIVERDESC desc);
/* midi.c */
extern LONG ALSA_MidiInit(void);
/* waveinit.c */
extern LONG ALSA_WaveInit(void);
#endif /* __ALSA_H */