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 /* unless someone makes a wineserver kernel module, Unix pipes are faster than win32 events */
  29 #define USE_PIPE_SYNC
  30
  31 #define MAX_WAVEDRV     (6)
  32 #define MAX_CHANNELS    6
  33
  34 /* states of the playing device */
  35 #define WINE_WS_PLAYING         0
  36 #define WINE_WS_PAUSED          1
  37 #define WINE_WS_STOPPED         2
  38 #define WINE_WS_CLOSED          3
  39
  40 /* events to be send to device */
  41 enum win_wm_message {
  42     WINE_WM_PAUSING = WM_USER + 1, WINE_WM_RESTARTING, WINE_WM_RESETTING, WINE_WM_HEADER,
  43     WINE_WM_UPDATE, WINE_WM_BREAKLOOP, WINE_WM_CLOSING, WINE_WM_STARTING, WINE_WM_STOPPING
  44 };
  45
  46 #ifdef USE_PIPE_SYNC
  47 #define SIGNAL_OMR(omr) do { int x = 0; write((omr)->msg_pipe[1], &x, sizeof(x)); } while (0)
  48 #define CLEAR_OMR(omr) do { int x = 0; read((omr)->msg_pipe[0], &x, sizeof(x)); } while (0)
  49 #define RESET_OMR(omr) do { } while (0)
  50 #define WAIT_OMR(omr, sleep) \
  51   do { struct pollfd pfd; pfd.fd = (omr)->msg_pipe[0]; \
  52        pfd.events = POLLIN; poll(&pfd, 1, sleep); } while (0)
  53 #else
  54 #define SIGNAL_OMR(omr) do { SetEvent((omr)->msg_event); } while (0)
  55 #define CLEAR_OMR(omr) do { } while (0)
  56 #define RESET_OMR(omr) do { ResetEvent((omr)->msg_event); } while (0)
  57 #define WAIT_OMR(omr, sleep) \
  58   do { WaitForSingleObject((omr)->msg_event, sleep); } while (0)
  59 #endif
  60
  61 typedef struct {
  62     enum win_wm_message         msg;    /* message identifier */
  63     DWORD_PTR                   param;  /* parameter for this message */
  64     HANDLE                      hEvent; /* if message is synchronous, handle of event for synchro */
  65 } OSS_MSG;
  66
  67 /* implement an in-process message ring for better performance
  68  * (compared to passing thru the server)
  69  * this ring will be used by the input (resp output) record (resp playback) routine
  70  */
  71 #define OSS_RING_BUFFER_INCREMENT       64
  72 typedef struct {
  73     int                         ring_buffer_size;
  74     OSS_MSG                     * messages;
  75     int                         msg_tosave;
  76     int                         msg_toget;
  77 #ifdef USE_PIPE_SYNC
  78     int                         msg_pipe[2];
  79 #else
  80     HANDLE                      msg_event;
  81 #endif
  82     CRITICAL_SECTION            msg_crst;
  83 } OSS_MSG_RING;
  84
  85 typedef struct tagOSS_DEVICE {
  86     char*                       dev_name;
  87     char*                       mixer_name;
  88     char*                       interface_name;
  89     unsigned                    open_count;
  90     WAVEOUTCAPSW                out_caps;
  91     WAVEOUTCAPSW                duplex_out_caps;
  92     WAVEINCAPSW                 in_caps;
  93     DWORD                       in_caps_support;
  94     unsigned                    open_access;
  95     int                         fd;
  96     DWORD                       owner_tid;
  97     int                         sample_rate;
  98     int                         channels;
  99     int                         format;
 100     unsigned                    audio_fragment;
 101     BOOL                        full_duplex;
 102     BOOL                        bTriggerSupport;
 103     BOOL                        bOutputEnabled;
 104     BOOL                        bInputEnabled;
 105     DSDRIVERDESC                ds_desc;
 106     DSDRIVERCAPS                ds_caps;
 107     DSCDRIVERCAPS               dsc_caps;
 108 } OSS_DEVICE;
 109
 110 typedef struct {
 111     OSS_DEVICE ossdev;
 112     volatile int                state;                  /* one of the WINE_WS_ manifest constants */
 113     WAVEOPENDESC                waveDesc;
 114     WORD                        wFlags;
 115     WAVEFORMATPCMEX             waveFormat;
 116     DWORD                       volume;
 117
 118     /* OSS information */
 119     DWORD                       dwFragmentSize;         /* size of OSS buffer fragment */
 120     DWORD                       dwBufferSize;           /* size of whole OSS buffer in bytes */
 121     LPWAVEHDR                   lpQueuePtr;             /* start of queued WAVEHDRs (waiting to be notified) */
 122     LPWAVEHDR                   lpPlayPtr;              /* start of not yet fully played buffers */
 123     DWORD                       dwPartialOffset;        /* Offset of not yet written bytes in lpPlayPtr */
 124
 125     LPWAVEHDR                   lpLoopPtr;              /* pointer of first buffer in loop, if any */
 126     DWORD                       dwLoops;                /* private copy of loop counter */
 127
 128     DWORD                       dwPlayedTotal;          /* number of bytes actually played since opening */
 129     DWORD                       dwWrittenTotal;         /* number of bytes written to OSS buffer since opening */
 130     BOOL                        bNeedPost;              /* whether audio still needs to be physically started */
 131
 132     /* synchronization stuff */
 133     HANDLE                      hStartUpEvent;
 134     HANDLE                      hThread;
 135     DWORD                       dwThreadID;
 136     OSS_MSG_RING                msgRing;
 137
 138     /* make accommodation for the inaccuracy of OSS when reporting buffer size remaining by using the clock instead of GETOSPACE */
 139     DWORD                       dwProjectedFinishTime;
 140
 141 } WINE_WAVEOUT;
 142
 143 typedef struct {
 144     OSS_DEVICE ossdev;
 145     volatile int                state;
 146     DWORD                       dwFragmentSize;         /* OpenSound '/dev/dsp' give us that size */
 147     WAVEOPENDESC                waveDesc;
 148     WORD                        wFlags;
 149     WAVEFORMATPCMEX             waveFormat;
 150     LPWAVEHDR                   lpQueuePtr;
 151     DWORD                       dwTotalRecorded;
 152     DWORD                       dwTotalRead;
 153
 154     /* synchronization stuff */
 155     HANDLE                      hThread;
 156     DWORD                       dwThreadID;
 157     HANDLE                      hStartUpEvent;
 158     OSS_MSG_RING                msgRing;
 159 } WINE_WAVEIN;
 160
 161 extern WINE_WAVEOUT     WOutDev[MAX_WAVEDRV];
 162 extern WINE_WAVEIN      WInDev[MAX_WAVEDRV];
 163 extern unsigned         numOutDev;
 164 extern unsigned         numInDev;
 165
 166 extern int getEnables(OSS_DEVICE *ossdev);
 167 extern void copy_format(LPWAVEFORMATEX wf1, LPWAVEFORMATPCMEX wf2);
 168
 169 extern DWORD OSS_OpenDevice(OSS_DEVICE* ossdev, unsigned req_access,
 170                             int* frag, int strict_format,
 171                             int sample_rate, int stereo, int fmt);
 172
 173 extern void OSS_CloseDevice(OSS_DEVICE* ossdev);
 174
 175 extern DWORD wodSetVolume(WORD wDevID, DWORD dwParam);
 176
 177 /* dscapture.c */
 178 extern DWORD widDsCreate(UINT wDevID, PIDSCDRIVER* drv);
 179 extern DWORD widDsDesc(UINT wDevID, PDSDRIVERDESC desc);
 180
 181 /* dsrender.c */
 182 extern DWORD wodDsCreate(UINT wDevID, PIDSDRIVER* drv);
 183 extern DWORD wodDsDesc(UINT wDevID, PDSDRIVERDESC desc);