dlls/wineoss.drv/audio.h

   1 /*
   2  * Sample Wine Driver for Open Sound System (featured in Linux and FreeBSD)
   3  *
   4  * Copyright 1994 Martin Ayotte
   5  *           1999 Eric Pouech (async playing in waveOut/waveIn)
   6  *           2000 Eric Pouech (loops in waveOut)
   7  *           2002 Eric Pouech (full duplex)
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2.1 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  22  */
  23
  24 #ifndef __WINE_CONFIG_H
  25 # error You must include config.h to use this header
  26 #endif
  27
  28 #ifdef HAVE_OSS
  29
  30 /* unless someone makes a wineserver kernel module, Unix pipes are faster than win32 events */
  31 #define USE_PIPE_SYNC
  32
  33 #define MAX_WAVEDRV     (6)
  34 #define MAX_CHANNELS    6
  35
  36 /* states of the playing device */
  37 #define WINE_WS_PLAYING         0
  38 #define WINE_WS_PAUSED          1
  39 #define WINE_WS_STOPPED         2
  40 #define WINE_WS_CLOSED          3
  41
  42 /* events to be send to device */
  43 enum win_wm_message {
  44     WINE_WM_PAUSING = WM_USER + 1, WINE_WM_RESTARTING, WINE_WM_RESETTING, WINE_WM_HEADER,
  45     WINE_WM_UPDATE, WINE_WM_BREAKLOOP, WINE_WM_CLOSING, WINE_WM_STARTING, WINE_WM_STOPPING
  46 };
  47
  48 #ifdef USE_PIPE_SYNC
  49 #define SIGNAL_OMR(omr) do { int x = 0; write((omr)->msg_pipe[1], &x, sizeof(x)); } while (0)
  50 #define CLEAR_OMR(omr) do { int x = 0; read((omr)->msg_pipe[0], &x, sizeof(x)); } while (0)
  51 #define RESET_OMR(omr) do { } while (0)
  52 #define WAIT_OMR(omr, sleep) \
  53   do { struct pollfd pfd; pfd.fd = (omr)->msg_pipe[0]; \
  54        pfd.events = POLLIN; poll(&pfd, 1, sleep); } while (0)
  55 #else
  56 #define SIGNAL_OMR(omr) do { SetEvent((omr)->msg_event); } while (0)
  57 #define CLEAR_OMR(omr) do { } while (0)
  58 #define RESET_OMR(omr) do { ResetEvent((omr)->msg_event); } while (0)
  59 #define WAIT_OMR(omr, sleep) \
  60   do { WaitForSingleObject((omr)->msg_event, sleep); } while (0)
  61 #endif
  62
  63 typedef struct {
  64     enum win_wm_message         msg;    /* message identifier */
  65     DWORD_PTR                   param;  /* parameter for this message */
  66     HANDLE                      hEvent; /* if message is synchronous, handle of event for synchro */
  67 } OSS_MSG;
  68
  69 /* implement an in-process message ring for better performance
  70  * (compared to passing thru the server)
  71  * this ring will be used by the input (resp output) record (resp playback) routine
  72  */
  73 #define OSS_RING_BUFFER_INCREMENT       64
  74 typedef struct {
  75     int                         ring_buffer_size;
  76     OSS_MSG                     * messages;
  77     int                         msg_tosave;
  78     int                         msg_toget;
  79 #ifdef USE_PIPE_SYNC
  80     int                         msg_pipe[2];
  81 #else
  82     HANDLE                      msg_event;
  83 #endif
  84     CRITICAL_SECTION            msg_crst;
  85 } OSS_MSG_RING;
  86
  87 typedef struct tagOSS_DEVICE {
  88     char*                       dev_name;
  89     char*                       mixer_name;
  90     char*                       interface_name;
  91     unsigned                    open_count;
  92     WAVEOUTCAPSW                out_caps;
  93     WAVEOUTCAPSW                duplex_out_caps;
  94     WAVEINCAPSW                 in_caps;
  95     DWORD                       in_caps_support;
  96     unsigned                    open_access;
  97     int                         fd;
  98     DWORD                       owner_tid;
  99     int                         sample_rate;
 100     int                         channels;
 101     int                         format;
 102     unsigned                    audio_fragment;
 103     BOOL                        full_duplex;
 104     BOOL                        bTriggerSupport;
 105     BOOL                        bOutputEnabled;
 106     BOOL                        bInputEnabled;
 107     DSDRIVERDESC                ds_desc;
 108     DSDRIVERCAPS                ds_caps;
 109     DSCDRIVERCAPS               dsc_caps;
 110 } OSS_DEVICE;
 111
 112 typedef struct {
 113     OSS_DEVICE ossdev;
 114     volatile int                state;                  /* one of the WINE_WS_ manifest constants */
 115     WAVEOPENDESC                waveDesc;
 116     WORD                        wFlags;
 117     WAVEFORMATPCMEX             waveFormat;
 118     DWORD                       volume;
 119
 120     /* OSS information */
 121     DWORD                       dwFragmentSize;         /* size of OSS buffer fragment */
 122     DWORD                       dwBufferSize;           /* size of whole OSS buffer in bytes */
 123     LPWAVEHDR                   lpQueuePtr;             /* start of queued WAVEHDRs (waiting to be notified) */
 124     LPWAVEHDR                   lpPlayPtr;              /* start of not yet fully played buffers */
 125     DWORD                       dwPartialOffset;        /* Offset of not yet written bytes in lpPlayPtr */
 126
 127     LPWAVEHDR                   lpLoopPtr;              /* pointer of first buffer in loop, if any */
 128     DWORD                       dwLoops;                /* private copy of loop counter */
 129
 130     DWORD                       dwPlayedTotal;          /* number of bytes actually played since opening */
 131     DWORD                       dwWrittenTotal;         /* number of bytes written to OSS buffer since opening */
 132     BOOL                        bNeedPost;              /* whether audio still needs to be physically started */
 133
 134     /* synchronization stuff */
 135     HANDLE                      hStartUpEvent;
 136     HANDLE                      hThread;
 137     DWORD                       dwThreadID;
 138     OSS_MSG_RING                msgRing;
 139
 140     /* make accommodation for the inaccuracy of OSS when reporting buffer size remaining by using the clock instead of GETOSPACE */
 141     DWORD                       dwProjectedFinishTime;
 142
 143 } WINE_WAVEOUT;
 144
 145 typedef struct {
 146     OSS_DEVICE ossdev;
 147     volatile int                state;
 148     DWORD                       dwFragmentSize;         /* OpenSound '/dev/dsp' give us that size */
 149     WAVEOPENDESC                waveDesc;
 150     WORD                        wFlags;
 151     WAVEFORMATPCMEX             waveFormat;
 152     LPWAVEHDR                   lpQueuePtr;
 153     DWORD                       dwTotalRecorded;
 154     DWORD                       dwTotalRead;
 155
 156     /* synchronization stuff */
 157     HANDLE                      hThread;
 158     DWORD                       dwThreadID;
 159     HANDLE                      hStartUpEvent;
 160     OSS_MSG_RING                msgRing;
 161 } WINE_WAVEIN;
 162
 163 extern WINE_WAVEOUT     WOutDev[MAX_WAVEDRV];
 164 extern WINE_WAVEIN      WInDev[MAX_WAVEDRV];
 165 extern unsigned         numOutDev;
 166 extern unsigned         numInDev;
 167
 168 extern int getEnables(OSS_DEVICE *ossdev);
 169 extern void copy_format(LPWAVEFORMATEX wf1, LPWAVEFORMATPCMEX wf2);
 170
 171 extern DWORD OSS_OpenDevice(OSS_DEVICE* ossdev, unsigned req_access,
 172                             int* frag, int strict_format,
 173                             int sample_rate, int stereo, int fmt);
 174
 175 extern void OSS_CloseDevice(OSS_DEVICE* ossdev);
 176
 177 extern DWORD wodSetVolume(WORD wDevID, DWORD dwParam);
 178
 179 /* dscapture.c */
 180 extern DWORD widDsCreate(UINT wDevID, PIDSCDRIVER* drv);
 181 extern DWORD widDsDesc(UINT wDevID, PDSDRIVERDESC desc);
 182
 183 /* dsrender.c */
 184 extern DWORD wodDsCreate(UINT wDevID, PIDSDRIVER* drv);
 185 extern DWORD wodDsDesc(UINT wDevID, PDSDRIVERDESC desc);
 186
 187 #endif /* HAVE_OSS */