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https://github.com/reactos/wine.git
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206 lines
7.3 KiB
C
206 lines
7.3 KiB
C
/* Definition for ALSA drivers : wine multimedia system
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*
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* Copyright (C) 2002 Erich Pouech
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* Copyright (C) 2002 Marco Pietrobono
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* Copyright (C) 2003 Christian Costa
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* Copyright (C) 2007 Maarten Lankhorst
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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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#ifndef __WINE_CONFIG_H
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# error You must include config.h to use this header
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#endif
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#if defined(HAVE_ALSA) && !defined(__ALSA_H)
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#define __ALSA_H
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#ifdef interface
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#undef interface
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#endif
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#define ALSA_PCM_NEW_HW_PARAMS_API
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#define ALSA_PCM_NEW_SW_PARAMS_API
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#ifdef HAVE_ALSA_ASOUNDLIB_H
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#include <alsa/asoundlib.h>
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#elif defined(HAVE_SYS_ASOUNDLIB_H)
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#include <sys/asoundlib.h>
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#endif
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#ifdef HAVE_SYS_ERRNO_H
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#include <sys/errno.h>
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#endif
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#include "mmreg.h"
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#include "dsound.h"
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#include "dsdriver.h"
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#include "ks.h"
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#include "ksmedia.h"
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#include "ksguid.h"
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/* state diagram for waveOut writing:
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*
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* +---------+-------------+---------------+---------------------------------+
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* | state | function | event | new state |
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* +---------+-------------+---------------+---------------------------------+
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* | | open() | | STOPPED |
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* | PAUSED | write() | | PAUSED |
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* | STOPPED | write() | <thrd create> | PLAYING |
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* | PLAYING | write() | HEADER | PLAYING |
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* | (other) | write() | <error> | |
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* | (any) | pause() | PAUSING | PAUSED |
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* | PAUSED | restart() | RESTARTING | PLAYING (if no thrd => STOPPED) |
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* | (any) | reset() | RESETTING | STOPPED |
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* | (any) | close() | CLOSING | CLOSED |
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* +---------+-------------+---------------+---------------------------------+
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*/
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/* states of the playing device */
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#define WINE_WS_PLAYING 0
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#define WINE_WS_PAUSED 1
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#define WINE_WS_STOPPED 2
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#define WINE_WS_CLOSED 3
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/* events to be send to device */
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enum win_wm_message {
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WINE_WM_PAUSING = WM_USER + 1, WINE_WM_RESTARTING, WINE_WM_RESETTING, WINE_WM_HEADER,
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WINE_WM_UPDATE, WINE_WM_BREAKLOOP, WINE_WM_CLOSING, WINE_WM_STARTING, WINE_WM_STOPPING
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};
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typedef struct {
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enum win_wm_message msg; /* message identifier */
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DWORD_PTR param; /* parameter for this message */
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HANDLE hEvent; /* if message is synchronous, handle of event for synchro */
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} ALSA_MSG;
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/* implement an in-process message ring for better performance
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* (compared to passing thru the server)
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* this ring will be used by the input (resp output) record (resp playback) routine
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*/
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typedef struct {
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ALSA_MSG * messages;
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int ring_buffer_size;
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int msg_tosave;
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int msg_toget;
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/* Either pipe or event is used, but that is defined in alsa.c,
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* since this is a global header we define both here */
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int msg_pipe[2];
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HANDLE msg_event;
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CRITICAL_SECTION msg_crst;
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} ALSA_MSG_RING;
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typedef struct {
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volatile int state; /* one of the WINE_WS_ manifest constants */
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WAVEOPENDESC waveDesc;
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WORD wFlags;
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WAVEFORMATPCMEX format;
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char* pcmname; /* string name of alsa PCM device */
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char* ctlname; /* string name of alsa control device */
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char interface_name[MAXPNAMELEN * 2];
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snd_pcm_t* pcm; /* handle to ALSA playback device */
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snd_pcm_hw_params_t * hw_params;
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DWORD dwBufferSize; /* size of whole ALSA buffer in bytes */
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LPWAVEHDR lpQueuePtr; /* start of queued WAVEHDRs (waiting to be notified) */
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LPWAVEHDR lpPlayPtr; /* start of not yet fully played buffers */
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LPWAVEHDR lpLoopPtr; /* pointer of first buffer in loop, if any */
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DWORD dwLoops; /* private copy of loop counter */
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DWORD dwPlayedTotal; /* number of bytes actually played since opening */
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DWORD dwWrittenTotal; /* number of bytes written to ALSA buffer since opening */
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/* synchronization stuff */
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HANDLE hStartUpEvent;
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HANDLE hThread;
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DWORD dwThreadID;
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ALSA_MSG_RING msgRing;
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/* DirectSound stuff */
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DSDRIVERDESC ds_desc;
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DSDRIVERCAPS ds_caps;
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/* Waveout only fields */
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WAVEOUTCAPSW outcaps;
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snd_hctl_t * hctl; /* control handle for the playback volume */
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snd_pcm_sframes_t (*write)(snd_pcm_t *, const void *, snd_pcm_uframes_t );
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DWORD dwPartialOffset; /* Offset of not yet written bytes in lpPlayPtr */
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/* Wavein only fields */
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WAVEINCAPSW incaps;
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DWORD dwSupport;
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snd_pcm_sframes_t (*read)(snd_pcm_t *, void *, snd_pcm_uframes_t );
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DWORD dwPeriodSize; /* size of OSS buffer period */
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DWORD dwTotalRecorded;
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} WINE_WAVEDEV;
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/*----------------------------------------------------------------------------
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** Global array of output and input devices, initialized via ALSA_WaveInit
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*/
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#define WAVEDEV_ALLOC_EXTENT_SIZE 10
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/* wavein.c */
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extern WINE_WAVEDEV *WInDev;
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extern DWORD ALSA_WidNumMallocedDevs;
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extern DWORD ALSA_WidNumDevs;
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/* waveout.c */
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extern WINE_WAVEDEV *WOutDev;
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extern DWORD ALSA_WodNumMallocedDevs;
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extern DWORD ALSA_WodNumDevs;
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/* alsa.c */
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int ALSA_InitRingMessage(ALSA_MSG_RING* omr);
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int ALSA_DestroyRingMessage(ALSA_MSG_RING* omr);
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void ALSA_ResetRingMessage(ALSA_MSG_RING* omr);
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void ALSA_WaitRingMessage(ALSA_MSG_RING* omr, DWORD sleep);
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int ALSA_AddRingMessage(ALSA_MSG_RING* omr, enum win_wm_message msg, DWORD_PTR param, BOOL wait);
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int ALSA_RetrieveRingMessage(ALSA_MSG_RING* omr, enum win_wm_message *msg, DWORD_PTR *param, HANDLE *hEvent);
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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);
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const char * ALSA_getCmdString(enum win_wm_message msg);
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const char * ALSA_getMessage(UINT msg);
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const char * ALSA_getFormat(WORD wFormatTag);
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BOOL ALSA_NearMatch(int rate1, int rate2);
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DWORD ALSA_bytes_to_mmtime(LPMMTIME lpTime, DWORD position, WAVEFORMATPCMEX* format);
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void ALSA_TraceParameters(snd_pcm_hw_params_t * hw_params, snd_pcm_sw_params_t * sw, int full);
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int ALSA_XRUNRecovery(WINE_WAVEDEV * wwo, int err);
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void ALSA_copyFormat(LPWAVEFORMATEX wf1, LPWAVEFORMATPCMEX wf2);
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BOOL ALSA_supportedFormat(LPWAVEFORMATEX wf);
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/* dscapture.c */
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DWORD widDsCreate(UINT wDevID, PIDSCDRIVER* drv);
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DWORD widDsDesc(UINT wDevID, PDSDRIVERDESC desc);
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/* dsoutput.c */
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DWORD wodDsCreate(UINT wDevID, PIDSDRIVER* drv);
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DWORD wodDsDesc(UINT wDevID, PDSDRIVERDESC desc);
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/* waveinit.c */
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extern void ALSA_WaveInit(void);
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#endif /* __ALSA_H */
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