git.oblomov.eu Git - wine/blob - dlls/winealsa.drv/waveout.c

   1 /*
   2  * Sample Wine Driver for Advanced Linux Sound System (ALSA)
   3  *      Based on version <final> of the ALSA API
   4  *
   5  * Copyright    2002 Eric Pouech
   6  *              2002 Marco Pietrobono
   7  *              2003 Christian Costa : WaveIn support
   8  *              2006-2007 Maarten Lankhorst
   9  *
  10  * This library is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU Lesser General Public
  12  * License as published by the Free Software Foundation; either
  13  * version 2.1 of the License, or (at your option) any later version.
  14  *
  15  * This library is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * Lesser General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU Lesser General Public
  21  * License along with this library; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  23  */
  24
  25 /*======================================================================*
  26  *                  Low level WAVE OUT implementation                   *
  27  *======================================================================*/
  28
  29 #include "config.h"
  30 #include "wine/port.h"
  31
  32 #include <stdlib.h>
  33 #include <stdarg.h>
  34 #include <stdio.h>
  35 #include <string.h>
  36 #ifdef HAVE_UNISTD_H
  37 # include <unistd.h>
  38 #endif
  39 #include <errno.h>
  40 #include <limits.h>
  41 #include <fcntl.h>
  42 #ifdef HAVE_SYS_IOCTL_H
  43 # include <sys/ioctl.h>
  44 #endif
  45 #ifdef HAVE_SYS_MMAN_H
  46 # include <sys/mman.h>
  47 #endif
  48 #include "windef.h"
  49 #include "winbase.h"
  50 #include "wingdi.h"
  51 #include "winuser.h"
  52 #include "winnls.h"
  53 #include "mmddk.h"
  54
  55 #include "alsa.h"
  56
  57 #include "wine/library.h"
  58 #include "wine/unicode.h"
  59 #include "wine/debug.h"
  60
  61 WINE_DEFAULT_DEBUG_CHANNEL(wave);
  62
  63 #ifdef HAVE_ALSA
  64
  65 WINE_WAVEDEV    *WOutDev;
  66 DWORD            ALSA_WodNumMallocedDevs;
  67 DWORD            ALSA_WodNumDevs;
  68
  69 /**************************************************************************
  70  *                      wodNotifyClient                 [internal]
  71  */
  72 static DWORD wodNotifyClient(WINE_WAVEDEV* wwo, WORD wMsg, DWORD_PTR dwParam1, DWORD_PTR dwParam2)
  73 {
  74     TRACE("wMsg = 0x%04x dwParm1 = %lx dwParam2 = %lx\n", wMsg, dwParam1, dwParam2);
  75
  76     switch (wMsg) {
  77     case WOM_OPEN:
  78     case WOM_CLOSE:
  79     case WOM_DONE:
  80         if (wwo->wFlags != DCB_NULL &&
  81             !DriverCallback(wwo->waveDesc.dwCallback, wwo->wFlags, (HDRVR)wwo->waveDesc.hWave,
  82                             wMsg, wwo->waveDesc.dwInstance, dwParam1, dwParam2)) {
  83             WARN("can't notify client !\n");
  84             return MMSYSERR_ERROR;
  85         }
  86         break;
  87     default:
  88         FIXME("Unknown callback message %u\n", wMsg);
  89         return MMSYSERR_INVALPARAM;
  90     }
  91     return MMSYSERR_NOERROR;
  92 }
  93
  94 /**************************************************************************
  95  *                              wodUpdatePlayedTotal    [internal]
  96  *
  97  */
  98 static BOOL wodUpdatePlayedTotal(WINE_WAVEDEV* wwo, snd_pcm_status_t* ps)
  99 {
 100     snd_pcm_sframes_t delay;
 101     snd_pcm_sframes_t avail;
 102     snd_pcm_uframes_t buf_size = 0;
 103     snd_pcm_state_t state;
 104
 105     state = snd_pcm_state(wwo->pcm);
 106     avail = snd_pcm_avail_update(wwo->pcm);
 107     snd_pcm_hw_params_get_buffer_size(wwo->hw_params, &buf_size);
 108     delay = buf_size - avail;
 109
 110     if (state != SND_PCM_STATE_RUNNING && state != SND_PCM_STATE_PREPARED)
 111     {
 112         WARN("Unexpected state (%d) while updating Total Played, resetting\n", state);
 113         delay=0;
 114     }
 115
 116     /* A delay < 0 indicates an underrun; for our purposes that's 0.  */
 117     if (delay < 0)
 118     {
 119         WARN("Unexpected delay (%ld) while updating Total Played, resetting\n", delay);
 120         delay=0;
 121     }
 122
 123     InterlockedExchange((LONG*)&wwo->dwPlayedTotal, wwo->dwWrittenTotal - snd_pcm_frames_to_bytes(wwo->pcm, delay));
 124     return TRUE;
 125 }
 126
 127 /**************************************************************************
 128  *                              wodPlayer_BeginWaveHdr          [internal]
 129  *
 130  * Makes the specified lpWaveHdr the currently playing wave header.
 131  * If the specified wave header is a begin loop and we're not already in
 132  * a loop, setup the loop.
 133  */
 134 static void wodPlayer_BeginWaveHdr(WINE_WAVEDEV* wwo, LPWAVEHDR lpWaveHdr)
 135 {
 136     wwo->lpPlayPtr = lpWaveHdr;
 137
 138     if (!lpWaveHdr) return;
 139
 140     if (lpWaveHdr->dwFlags & WHDR_BEGINLOOP) {
 141         if (wwo->lpLoopPtr) {
 142             WARN("Already in a loop. Discarding loop on this header (%p)\n", lpWaveHdr);
 143         } else {
 144             TRACE("Starting loop (%dx) with %p\n", lpWaveHdr->dwLoops, lpWaveHdr);
 145             wwo->lpLoopPtr = lpWaveHdr;
 146             /* Windows does not touch WAVEHDR.dwLoops,
 147              * so we need to make an internal copy */
 148             wwo->dwLoops = lpWaveHdr->dwLoops;
 149         }
 150     }
 151     wwo->dwPartialOffset = 0;
 152 }
 153
 154 /**************************************************************************
 155  *                              wodPlayer_PlayPtrNext           [internal]
 156  *
 157  * Advance the play pointer to the next waveheader, looping if required.
 158  */
 159 static LPWAVEHDR wodPlayer_PlayPtrNext(WINE_WAVEDEV* wwo)
 160 {
 161     LPWAVEHDR lpWaveHdr = wwo->lpPlayPtr;
 162
 163     wwo->dwPartialOffset = 0;
 164     if ((lpWaveHdr->dwFlags & WHDR_ENDLOOP) && wwo->lpLoopPtr) {
 165         /* We're at the end of a loop, loop if required */
 166         if (--wwo->dwLoops > 0) {
 167             wwo->lpPlayPtr = wwo->lpLoopPtr;
 168         } else {
 169             /* Handle overlapping loops correctly */
 170             if (wwo->lpLoopPtr != lpWaveHdr && (lpWaveHdr->dwFlags & WHDR_BEGINLOOP)) {
 171                 FIXME("Correctly handled case ? (ending loop buffer also starts a new loop)\n");
 172                 /* shall we consider the END flag for the closing loop or for
 173                  * the opening one or for both ???
 174                  * code assumes for closing loop only
 175                  */
 176             } else {
 177                 lpWaveHdr = lpWaveHdr->lpNext;
 178             }
 179             wwo->lpLoopPtr = NULL;
 180             wodPlayer_BeginWaveHdr(wwo, lpWaveHdr);
 181         }
 182     } else {
 183         /* We're not in a loop.  Advance to the next wave header */
 184         wodPlayer_BeginWaveHdr(wwo, lpWaveHdr = lpWaveHdr->lpNext);
 185     }
 186
 187     return lpWaveHdr;
 188 }
 189
 190 /**************************************************************************
 191  *                           wodPlayer_DSPWait                  [internal]
 192  * Returns the number of milliseconds to wait for the DSP buffer to play a
 193  * period
 194  */
 195 static DWORD wodPlayer_DSPWait(const WINE_WAVEDEV *wwo)
 196 {
 197     /* time for one period to be played */
 198     unsigned int val=0;
 199     int dir=0;
 200     int err=0;
 201     err = snd_pcm_hw_params_get_period_time(wwo->hw_params, &val, &dir);
 202     return val / 1000;
 203 }
 204
 205 /**************************************************************************
 206  *                           wodPlayer_NotifyWait               [internal]
 207  * Returns the number of milliseconds to wait before attempting to notify
 208  * completion of the specified wavehdr.
 209  * This is based on the number of bytes remaining to be written in the
 210  * wave.
 211  */
 212 static DWORD wodPlayer_NotifyWait(const WINE_WAVEDEV* wwo, LPWAVEHDR lpWaveHdr)
 213 {
 214     DWORD dwMillis;
 215
 216     if (lpWaveHdr->reserved < wwo->dwPlayedTotal) {
 217         dwMillis = 1;
 218     } else {
 219         dwMillis = (lpWaveHdr->reserved - wwo->dwPlayedTotal) * 1000 / wwo->format.Format.nAvgBytesPerSec;
 220         if (!dwMillis) dwMillis = 1;
 221     }
 222
 223     return dwMillis;
 224 }
 225
 226
 227 /**************************************************************************
 228  *                           wodPlayer_WriteMaxFrags            [internal]
 229  * Writes the maximum number of frames possible to the DSP and returns
 230  * the number of frames written.
 231  */
 232 static int wodPlayer_WriteMaxFrags(WINE_WAVEDEV* wwo, DWORD* frames)
 233 {
 234     /* Only attempt to write to free frames */
 235     LPWAVEHDR lpWaveHdr = wwo->lpPlayPtr;
 236     DWORD dwLength = snd_pcm_bytes_to_frames(wwo->pcm, lpWaveHdr->dwBufferLength - wwo->dwPartialOffset);
 237     int toWrite = min(dwLength, *frames);
 238     int written;
 239
 240     TRACE("Writing wavehdr %p.%u[%u]\n", lpWaveHdr, wwo->dwPartialOffset, lpWaveHdr->dwBufferLength);
 241
 242     if (toWrite > 0) {
 243         written = (wwo->write)(wwo->pcm, lpWaveHdr->lpData + wwo->dwPartialOffset, toWrite);
 244         if ( written < 0) {
 245             /* XRUN occurred. let's try to recover */
 246             ALSA_XRUNRecovery(wwo, written);
 247             written = (wwo->write)(wwo->pcm, lpWaveHdr->lpData + wwo->dwPartialOffset, toWrite);
 248         }
 249         if (written <= 0) {
 250             /* still in error */
 251             ERR("Error in writing wavehdr. Reason: %s\n", snd_strerror(written));
 252             return written;
 253         }
 254     } else
 255         written = 0;
 256
 257     wwo->dwPartialOffset += snd_pcm_frames_to_bytes(wwo->pcm, written);
 258     if ( wwo->dwPartialOffset >= lpWaveHdr->dwBufferLength) {
 259         /* this will be used to check if the given wave header has been fully played or not... */
 260         wwo->dwPartialOffset = lpWaveHdr->dwBufferLength;
 261         /* If we wrote all current wavehdr, skip to the next one */
 262         wodPlayer_PlayPtrNext(wwo);
 263     }
 264     *frames -= written;
 265     wwo->dwWrittenTotal += snd_pcm_frames_to_bytes(wwo->pcm, written);
 266     TRACE("dwWrittenTotal=%u\n", wwo->dwWrittenTotal);
 267
 268     return written;
 269 }
 270
 271
 272 /**************************************************************************
 273  *                              wodPlayer_NotifyCompletions     [internal]
 274  *
 275  * Notifies and remove from queue all wavehdrs which have been played to
 276  * the speaker (ie. they have cleared the ALSA buffer).  If force is true,
 277  * we notify all wavehdrs and remove them all from the queue even if they
 278  * are unplayed or part of a loop.
 279  */
 280 static DWORD wodPlayer_NotifyCompletions(WINE_WAVEDEV* wwo, BOOL force)
 281 {
 282     LPWAVEHDR           lpWaveHdr;
 283
 284     /* Start from lpQueuePtr and keep notifying until:
 285      * - we hit an unwritten wavehdr
 286      * - we hit the beginning of a running loop
 287      * - we hit a wavehdr which hasn't finished playing
 288      */
 289     for (;;)
 290     {
 291         lpWaveHdr = wwo->lpQueuePtr;
 292         if (!lpWaveHdr) {TRACE("Empty queue\n"); break;}
 293         if (!force)
 294         {
 295             snd_pcm_uframes_t frames;
 296             snd_pcm_hw_params_get_period_size(wwo->hw_params, &frames, NULL);
 297
 298             if (lpWaveHdr == wwo->lpPlayPtr) {TRACE("play %p\n", lpWaveHdr); break;}
 299             if (lpWaveHdr == wwo->lpLoopPtr) {TRACE("loop %p\n", lpWaveHdr); break;}
 300             if (lpWaveHdr->reserved > wwo->dwPlayedTotal + frames) {TRACE("still playing %p (%lu/%u)\n", lpWaveHdr, lpWaveHdr->reserved, wwo->dwPlayedTotal);break;}
 301         }
 302         wwo->dwPlayedTotal += lpWaveHdr->reserved - wwo->dwPlayedTotal;
 303         wwo->lpQueuePtr = lpWaveHdr->lpNext;
 304
 305         lpWaveHdr->dwFlags &= ~WHDR_INQUEUE;
 306         lpWaveHdr->dwFlags |= WHDR_DONE;
 307
 308         wodNotifyClient(wwo, WOM_DONE, (DWORD_PTR)lpWaveHdr, 0);
 309     }
 310     return  (lpWaveHdr && lpWaveHdr != wwo->lpPlayPtr && lpWaveHdr != wwo->lpLoopPtr) ?
 311         wodPlayer_NotifyWait(wwo, lpWaveHdr) : INFINITE;
 312 }
 313
 314
 315 /**************************************************************************
 316  *                              wodPlayer_Reset                 [internal]
 317  *
 318  * wodPlayer helper. Resets current output stream.
 319  */
 320 static  void    wodPlayer_Reset(WINE_WAVEDEV* wwo, BOOL reset)
 321 {
 322     int                         err;
 323     TRACE("(%p)\n", wwo);
 324
 325     /* flush all possible output */
 326     snd_pcm_drain(wwo->pcm);
 327
 328     wodUpdatePlayedTotal(wwo, NULL);
 329     /* updates current notify list */
 330     wodPlayer_NotifyCompletions(wwo, FALSE);
 331
 332     if ( (err = snd_pcm_drop(wwo->pcm)) < 0) {
 333         FIXME("flush: %s\n", snd_strerror(err));
 334         wwo->hThread = 0;
 335         wwo->state = WINE_WS_STOPPED;
 336         ExitThread(-1);
 337     }
 338     if ( (err = snd_pcm_prepare(wwo->pcm)) < 0 )
 339         ERR("pcm prepare failed: %s\n", snd_strerror(err));
 340
 341     if (reset) {
 342         enum win_wm_message     msg;
 343         DWORD_PTR               param;
 344         HANDLE                  ev;
 345
 346         /* remove any buffer */
 347         wodPlayer_NotifyCompletions(wwo, TRUE);
 348
 349         wwo->lpPlayPtr = wwo->lpQueuePtr = wwo->lpLoopPtr = NULL;
 350         wwo->state = WINE_WS_STOPPED;
 351         wwo->dwPlayedTotal = wwo->dwWrittenTotal = 0;
 352         /* Clear partial wavehdr */
 353         wwo->dwPartialOffset = 0;
 354
 355         /* remove any existing message in the ring */
 356         EnterCriticalSection(&wwo->msgRing.msg_crst);
 357         /* return all pending headers in queue */
 358         while (ALSA_RetrieveRingMessage(&wwo->msgRing, &msg, &param, &ev))
 359         {
 360             if (msg != WINE_WM_HEADER)
 361             {
 362                 FIXME("shouldn't have headers left\n");
 363                 SetEvent(ev);
 364                 continue;
 365             }
 366             ((LPWAVEHDR)param)->dwFlags &= ~WHDR_INQUEUE;
 367             ((LPWAVEHDR)param)->dwFlags |= WHDR_DONE;
 368
 369                 wodNotifyClient(wwo, WOM_DONE, param, 0);
 370         }
 371         ALSA_ResetRingMessage(&wwo->msgRing);
 372         LeaveCriticalSection(&wwo->msgRing.msg_crst);
 373     } else {
 374         if (wwo->lpLoopPtr) {
 375             /* complicated case, not handled yet (could imply modifying the loop counter */
 376             FIXME("Pausing while in loop isn't correctly handled yet, expect strange results\n");
 377             wwo->lpPlayPtr = wwo->lpLoopPtr;
 378             wwo->dwPartialOffset = 0;
 379             wwo->dwWrittenTotal = wwo->dwPlayedTotal; /* this is wrong !!! */
 380         } else {
 381             LPWAVEHDR   ptr;
 382             DWORD       sz = wwo->dwPartialOffset;
 383
 384             /* reset all the data as if we had written only up to lpPlayedTotal bytes */
 385             /* compute the max size playable from lpQueuePtr */
 386             for (ptr = wwo->lpQueuePtr; ptr != wwo->lpPlayPtr; ptr = ptr->lpNext) {
 387                 sz += ptr->dwBufferLength;
 388             }
 389             /* because the reset lpPlayPtr will be lpQueuePtr */
 390             if (wwo->dwWrittenTotal > wwo->dwPlayedTotal + sz) ERR("grin\n");
 391             wwo->dwPartialOffset = sz - (wwo->dwWrittenTotal - wwo->dwPlayedTotal);
 392             wwo->dwWrittenTotal = wwo->dwPlayedTotal;
 393             wwo->lpPlayPtr = wwo->lpQueuePtr;
 394         }
 395         wwo->state = WINE_WS_PAUSED;
 396     }
 397 }
 398
 399 /**************************************************************************
 400  *                    wodPlayer_ProcessMessages                 [internal]
 401  */
 402 static void wodPlayer_ProcessMessages(WINE_WAVEDEV* wwo)
 403 {
 404     LPWAVEHDR           lpWaveHdr;
 405     enum win_wm_message msg;
 406     DWORD_PTR           param;
 407     HANDLE              ev;
 408     int                 err;
 409
 410     while (ALSA_RetrieveRingMessage(&wwo->msgRing, &msg, &param, &ev)) {
 411      TRACE("Received %s %lx\n", ALSA_getCmdString(msg), param);
 412
 413         switch (msg) {
 414         case WINE_WM_PAUSING:
 415             if ( snd_pcm_state(wwo->pcm) == SND_PCM_STATE_RUNNING )
 416              {
 417                 if ( snd_pcm_hw_params_can_pause(wwo->hw_params) )
 418                 {
 419                     err = snd_pcm_pause(wwo->pcm, 1);
 420                     if ( err < 0 )
 421                         ERR("pcm_pause failed: %s\n", snd_strerror(err));
 422                     wwo->state = WINE_WS_PAUSED;
 423                 }
 424                 else
 425                 {
 426                     wodPlayer_Reset(wwo,FALSE);
 427                 }
 428              }
 429             SetEvent(ev);
 430             break;
 431         case WINE_WM_RESTARTING:
 432             if (wwo->state == WINE_WS_PAUSED)
 433             {
 434                 if ( snd_pcm_state(wwo->pcm) == SND_PCM_STATE_PAUSED )
 435                  {
 436                     err = snd_pcm_pause(wwo->pcm, 0);
 437                     if ( err < 0 )
 438                         ERR("pcm_pause failed: %s\n", snd_strerror(err));
 439                  }
 440                 wwo->state = WINE_WS_PLAYING;
 441             }
 442             SetEvent(ev);
 443             break;
 444         case WINE_WM_HEADER:
 445             lpWaveHdr = (LPWAVEHDR)param;
 446
 447             /* insert buffer at the end of queue */
 448             {
 449                 LPWAVEHDR*      wh;
 450                 for (wh = &(wwo->lpQueuePtr); *wh; wh = &((*wh)->lpNext));
 451                 *wh = lpWaveHdr;
 452             }
 453             if (!wwo->lpPlayPtr)
 454                 wodPlayer_BeginWaveHdr(wwo,lpWaveHdr);
 455             if (wwo->state == WINE_WS_STOPPED)
 456                 wwo->state = WINE_WS_PLAYING;
 457             break;
 458         case WINE_WM_RESETTING:
 459             wodPlayer_Reset(wwo,TRUE);
 460             SetEvent(ev);
 461             break;
 462         case WINE_WM_BREAKLOOP:
 463             if (wwo->state == WINE_WS_PLAYING && wwo->lpLoopPtr != NULL) {
 464                 /* ensure exit at end of current loop */
 465                 wwo->dwLoops = 1;
 466             }
 467             SetEvent(ev);
 468             break;
 469         case WINE_WM_CLOSING:
 470             /* sanity check: this should not happen since the device must have been reset before */
 471             if (wwo->lpQueuePtr || wwo->lpPlayPtr) ERR("out of sync\n");
 472             wwo->hThread = 0;
 473             wwo->state = WINE_WS_CLOSED;
 474             SetEvent(ev);
 475             ExitThread(0);
 476             /* shouldn't go here */
 477         default:
 478             FIXME("unknown message %d\n", msg);
 479             break;
 480         }
 481     }
 482 }
 483
 484 /**************************************************************************
 485  *                           wodPlayer_FeedDSP                  [internal]
 486  * Feed as much sound data as we can into the DSP and return the number of
 487  * milliseconds before it will be necessary to feed the DSP again.
 488  */
 489 static DWORD wodPlayer_FeedDSP(WINE_WAVEDEV* wwo)
 490 {
 491     DWORD               availInQ;
 492
 493     wodUpdatePlayedTotal(wwo, NULL);
 494     availInQ = snd_pcm_avail_update(wwo->pcm);
 495
 496     /* no more room... no need to try to feed */
 497     if (availInQ > 0) {
 498         /* Feed from partial wavehdr */
 499         if (wwo->lpPlayPtr && wwo->dwPartialOffset != 0) {
 500             wodPlayer_WriteMaxFrags(wwo, &availInQ);
 501         }
 502
 503         /* Feed wavehdrs until we run out of wavehdrs or DSP space */
 504         if (wwo->dwPartialOffset == 0 && wwo->lpPlayPtr) {
 505             do {
 506                 TRACE("Setting time to elapse for %p to %u\n",
 507                       wwo->lpPlayPtr, wwo->dwWrittenTotal + wwo->lpPlayPtr->dwBufferLength);
 508                 /* note the value that dwPlayedTotal will return when this wave finishes playing */
 509                 wwo->lpPlayPtr->reserved = wwo->dwWrittenTotal + wwo->lpPlayPtr->dwBufferLength;
 510             } while (wodPlayer_WriteMaxFrags(wwo, &availInQ) && wwo->lpPlayPtr && availInQ > 0);
 511         }
 512     }
 513
 514     return wodPlayer_DSPWait(wwo);
 515 }
 516
 517 /**************************************************************************
 518  *                              wodPlayer                       [internal]
 519  */
 520 static  DWORD   CALLBACK        wodPlayer(LPVOID pmt)
 521 {
 522     WORD          uDevID = (DWORD_PTR)pmt;
 523     WINE_WAVEDEV* wwo = &WOutDev[uDevID];
 524     DWORD         dwNextFeedTime = INFINITE;   /* Time before DSP needs feeding */
 525     DWORD         dwNextNotifyTime = INFINITE; /* Time before next wave completion */
 526     DWORD         dwSleepTime;
 527
 528     wwo->state = WINE_WS_STOPPED;
 529     SetEvent(wwo->hStartUpEvent);
 530
 531     for (;;) {
 532         /** Wait for the shortest time before an action is required.  If there
 533          *  are no pending actions, wait forever for a command.
 534          */
 535         dwSleepTime = min(dwNextFeedTime, dwNextNotifyTime);
 536         TRACE("waiting %ums (%u,%u)\n", dwSleepTime, dwNextFeedTime, dwNextNotifyTime);
 537         ALSA_WaitRingMessage(&wwo->msgRing, dwSleepTime);
 538         wodPlayer_ProcessMessages(wwo);
 539         if (wwo->state == WINE_WS_PLAYING) {
 540             dwNextFeedTime = wodPlayer_FeedDSP(wwo);
 541             dwNextNotifyTime = wodPlayer_NotifyCompletions(wwo, FALSE);
 542             if (dwNextFeedTime == INFINITE) {
 543                 /* FeedDSP ran out of data, but before giving up, */
 544                 /* check that a notification didn't give us more */
 545                 wodPlayer_ProcessMessages(wwo);
 546                 if (wwo->lpPlayPtr) {
 547                     TRACE("recovering\n");
 548                     dwNextFeedTime = wodPlayer_FeedDSP(wwo);
 549                 }
 550             }
 551         } else {
 552             dwNextFeedTime = dwNextNotifyTime = INFINITE;
 553         }
 554     }
 555     return 0;
 556 }
 557
 558 /**************************************************************************
 559  *                      wodGetDevCaps                           [internal]
 560  */
 561 static DWORD wodGetDevCaps(WORD wDevID, LPWAVEOUTCAPSW lpCaps, DWORD dwSize)
 562 {
 563     TRACE("(%u, %p, %u);\n", wDevID, lpCaps, dwSize);
 564
 565     if (lpCaps == NULL) return MMSYSERR_NOTENABLED;
 566
 567     if (wDevID >= ALSA_WodNumDevs) {
 568         TRACE("Asked for device %d, but only %d known!\n", wDevID, ALSA_WodNumDevs);
 569         return MMSYSERR_BADDEVICEID;
 570     }
 571
 572     memcpy(lpCaps, &WOutDev[wDevID].outcaps, min(dwSize, sizeof(*lpCaps)));
 573     return MMSYSERR_NOERROR;
 574 }
 575
 576 /**************************************************************************
 577  *                              wodOpen                         [internal]
 578  */
 579 static DWORD wodOpen(WORD wDevID, LPWAVEOPENDESC lpDesc, DWORD dwFlags)
 580 {
 581     WINE_WAVEDEV*               wwo;
 582     snd_pcm_t *                 pcm = NULL;
 583     snd_hctl_t *                hctl = NULL;
 584     snd_pcm_hw_params_t *       hw_params = NULL;
 585     snd_pcm_sw_params_t *       sw_params;
 586     snd_pcm_access_t            access;
 587     snd_pcm_format_t            format = -1;
 588     unsigned int                rate;
 589     unsigned int                buffer_time = 120000;
 590     unsigned int                period_time = 22000;
 591     snd_pcm_uframes_t           buffer_size;
 592     snd_pcm_uframes_t           period_size;
 593     int                         flags;
 594     int                         err=0;
 595     int                         dir=0;
 596     DWORD                       retcode = 0;
 597
 598     TRACE("(%u, %p, %08X);\n", wDevID, lpDesc, dwFlags);
 599     if (lpDesc == NULL) {
 600         WARN("Invalid Parameter !\n");
 601         return MMSYSERR_INVALPARAM;
 602     }
 603     if (wDevID >= ALSA_WodNumDevs) {
 604         TRACE("Asked for device %d, but only %d known!\n", wDevID, ALSA_WodNumDevs);
 605         return MMSYSERR_BADDEVICEID;
 606     }
 607
 608     /* only PCM format is supported so far... */
 609     if (!ALSA_supportedFormat(lpDesc->lpFormat)) {
 610         WARN("Bad format: tag=%04X nChannels=%d nSamplesPerSec=%d !\n",
 611              lpDesc->lpFormat->wFormatTag, lpDesc->lpFormat->nChannels,
 612              lpDesc->lpFormat->nSamplesPerSec);
 613         return WAVERR_BADFORMAT;
 614     }
 615
 616     if (dwFlags & WAVE_FORMAT_QUERY) {
 617         TRACE("Query format: tag=%04X nChannels=%d nSamplesPerSec=%d !\n",
 618              lpDesc->lpFormat->wFormatTag, lpDesc->lpFormat->nChannels,
 619              lpDesc->lpFormat->nSamplesPerSec);
 620         return MMSYSERR_NOERROR;
 621     }
 622
 623     wwo = &WOutDev[wDevID];
 624
 625     if (wwo->pcm != NULL) {
 626         WARN("%d already allocated\n", wDevID);
 627         return MMSYSERR_ALLOCATED;
 628     }
 629
 630     if (dwFlags & WAVE_DIRECTSOUND)
 631         FIXME("Why are we called with DirectSound flag? It doesn't use MMSYSTEM any more\n");
 632         /* not supported, ignore it */
 633     dwFlags &= ~WAVE_DIRECTSOUND;
 634
 635     flags = SND_PCM_NONBLOCK;
 636
 637     if ( (err = snd_pcm_open(&pcm, wwo->pcmname, SND_PCM_STREAM_PLAYBACK, flags)) < 0)
 638     {
 639         ERR("Error open: %s\n", snd_strerror(err));
 640         return MMSYSERR_NOTENABLED;
 641     }
 642
 643     if (wwo->ctlname)
 644     {
 645         err = snd_hctl_open(&hctl, wwo->ctlname, 0);
 646         if (err >= 0)
 647         {
 648             snd_hctl_load(hctl);
 649         }
 650         else
 651         {
 652             WARN("Could not open hctl for [%s]: %s\n", wwo->ctlname, snd_strerror(err));
 653             hctl = NULL;
 654         }
 655     }
 656
 657     wwo->wFlags = HIWORD(dwFlags & CALLBACK_TYPEMASK);
 658
 659     wwo->waveDesc = *lpDesc;
 660     ALSA_copyFormat(lpDesc->lpFormat, &wwo->format);
 661
 662     TRACE("Requested this format: %dx%dx%d %s\n",
 663           wwo->format.Format.nSamplesPerSec,
 664           wwo->format.Format.wBitsPerSample,
 665           wwo->format.Format.nChannels,
 666           ALSA_getFormat(wwo->format.Format.wFormatTag));
 667
 668     if (wwo->format.Format.wBitsPerSample == 0) {
 669         WARN("Resetting zeroed wBitsPerSample\n");
 670         wwo->format.Format.wBitsPerSample = 8 *
 671             (wwo->format.Format.nAvgBytesPerSec /
 672              wwo->format.Format.nSamplesPerSec) /
 673             wwo->format.Format.nChannels;
 674     }
 675
 676 #define EXIT_ON_ERROR(f,e,txt) do \
 677 { \
 678     int err; \
 679     if ( (err = (f) ) < 0) \
 680     { \
 681         WARN(txt ": %s\n", snd_strerror(err)); \
 682         retcode=e; \
 683         goto errexit; \
 684     } \
 685 } while(0)
 686
 687     sw_params = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, snd_pcm_sw_params_sizeof() );
 688     snd_pcm_hw_params_malloc(&hw_params);
 689     if (! hw_params)
 690     {
 691         retcode = MMSYSERR_NOMEM;
 692         goto errexit;
 693     }
 694     snd_pcm_hw_params_any(pcm, hw_params);
 695
 696     access = SND_PCM_ACCESS_MMAP_INTERLEAVED;
 697     if ( ( err = snd_pcm_hw_params_set_access(pcm, hw_params, access ) ) < 0) {
 698         WARN("mmap not available. switching to standard write.\n");
 699         access = SND_PCM_ACCESS_RW_INTERLEAVED;
 700         EXIT_ON_ERROR( snd_pcm_hw_params_set_access(pcm, hw_params, access ), MMSYSERR_INVALPARAM, "unable to set access for playback");
 701         wwo->write = snd_pcm_writei;
 702     }
 703     else
 704         wwo->write = snd_pcm_mmap_writei;
 705
 706     if ((err = snd_pcm_hw_params_set_channels(pcm, hw_params, wwo->format.Format.nChannels)) < 0) {
 707         WARN("unable to set required channels: %d\n", wwo->format.Format.nChannels);
 708         EXIT_ON_ERROR( snd_pcm_hw_params_set_channels(pcm, hw_params, wwo->format.Format.nChannels ), WAVERR_BADFORMAT, "unable to set required channels" );
 709     }
 710
 711     if ((wwo->format.Format.wFormatTag == WAVE_FORMAT_PCM) ||
 712         ((wwo->format.Format.wFormatTag == WAVE_FORMAT_EXTENSIBLE) &&
 713         IsEqualGUID(&wwo->format.SubFormat, &KSDATAFORMAT_SUBTYPE_PCM))) {
 714         format = (wwo->format.Format.wBitsPerSample == 8) ? SND_PCM_FORMAT_U8 :
 715                  (wwo->format.Format.wBitsPerSample == 16) ? SND_PCM_FORMAT_S16_LE :
 716                  (wwo->format.Format.wBitsPerSample == 24) ? SND_PCM_FORMAT_S24_3LE :
 717                  (wwo->format.Format.wBitsPerSample == 32) ? SND_PCM_FORMAT_S32_LE : -1;
 718     } else if ((wwo->format.Format.wFormatTag == WAVE_FORMAT_EXTENSIBLE) &&
 719         IsEqualGUID(&wwo->format.SubFormat, &KSDATAFORMAT_SUBTYPE_IEEE_FLOAT)){
 720         format = (wwo->format.Format.wBitsPerSample == 32) ? SND_PCM_FORMAT_FLOAT_LE : -1;
 721     } else if (wwo->format.Format.wFormatTag == WAVE_FORMAT_MULAW) {
 722         FIXME("unimplemented format: WAVE_FORMAT_MULAW\n");
 723         retcode = WAVERR_BADFORMAT;
 724         goto errexit;
 725     } else if (wwo->format.Format.wFormatTag == WAVE_FORMAT_ALAW) {
 726         FIXME("unimplemented format: WAVE_FORMAT_ALAW\n");
 727         retcode = WAVERR_BADFORMAT;
 728         goto errexit;
 729     } else if (wwo->format.Format.wFormatTag == WAVE_FORMAT_ADPCM) {
 730         FIXME("unimplemented format: WAVE_FORMAT_ADPCM\n");
 731         retcode = WAVERR_BADFORMAT;
 732         goto errexit;
 733     } else {
 734         ERR("invalid format: %0x04x\n", wwo->format.Format.wFormatTag);
 735         retcode = WAVERR_BADFORMAT;
 736         goto errexit;
 737     }
 738
 739     if ((err = snd_pcm_hw_params_set_format(pcm, hw_params, format)) < 0) {
 740         WARN("unable to set required format: %s\n", snd_pcm_format_name(format));
 741         EXIT_ON_ERROR( snd_pcm_hw_params_set_format(pcm, hw_params, format), WAVERR_BADFORMAT, "unable to set required format" );
 742     }
 743
 744     rate = wwo->format.Format.nSamplesPerSec;
 745     dir=0;
 746     err = snd_pcm_hw_params_set_rate_near(pcm, hw_params, &rate, &dir);
 747     if (err < 0) {
 748         WARN("Rate %d Hz not available for playback: %s\n", wwo->format.Format.nSamplesPerSec, snd_strerror(rate));
 749         retcode = WAVERR_BADFORMAT;
 750         goto errexit;
 751     }
 752     if (!ALSA_NearMatch(rate, wwo->format.Format.nSamplesPerSec)) {
 753         WARN("Rate doesn't match (requested %d Hz, got %d Hz)\n", wwo->format.Format.nSamplesPerSec, rate);
 754         retcode = WAVERR_BADFORMAT;
 755         goto errexit;
 756     }
 757
 758     TRACE("Got this format: %dx%dx%d %s\n",
 759           wwo->format.Format.nSamplesPerSec,
 760           wwo->format.Format.wBitsPerSample,
 761           wwo->format.Format.nChannels,
 762           ALSA_getFormat(wwo->format.Format.wFormatTag));
 763
 764     dir=0;
 765     EXIT_ON_ERROR( snd_pcm_hw_params_set_buffer_time_near(pcm, hw_params, &buffer_time, &dir), MMSYSERR_INVALPARAM, "unable to set buffer time");
 766     dir=0;
 767     EXIT_ON_ERROR( snd_pcm_hw_params_set_period_time_near(pcm, hw_params, &period_time, &dir), MMSYSERR_INVALPARAM, "unable to set period time");
 768
 769     EXIT_ON_ERROR( snd_pcm_hw_params(pcm, hw_params), MMSYSERR_INVALPARAM, "unable to set hw params for playback");
 770
 771     err = snd_pcm_hw_params_get_period_size(hw_params, &period_size, &dir);
 772     err = snd_pcm_hw_params_get_buffer_size(hw_params, &buffer_size);
 773
 774     snd_pcm_sw_params_current(pcm, sw_params);
 775
 776     EXIT_ON_ERROR( snd_pcm_sw_params_set_start_threshold(pcm, sw_params, 1), MMSYSERR_ERROR, "unable to set start threshold");
 777     EXIT_ON_ERROR( snd_pcm_sw_params_set_silence_size(pcm, sw_params, 0), MMSYSERR_ERROR, "unable to set silence size");
 778     EXIT_ON_ERROR( snd_pcm_sw_params_set_avail_min(pcm, sw_params, period_size), MMSYSERR_ERROR, "unable to set avail min");
 779     EXIT_ON_ERROR( snd_pcm_sw_params_set_silence_threshold(pcm, sw_params, 0), MMSYSERR_ERROR, "unable to set silence threshold");
 780     EXIT_ON_ERROR( snd_pcm_sw_params(pcm, sw_params), MMSYSERR_ERROR, "unable to set sw params for playback");
 781 #undef EXIT_ON_ERROR
 782
 783     snd_pcm_prepare(pcm);
 784
 785     if (TRACE_ON(wave))
 786         ALSA_TraceParameters(hw_params, sw_params, FALSE);
 787
 788     /* now, we can save all required data for later use... */
 789
 790     wwo->dwBufferSize = snd_pcm_frames_to_bytes(pcm, buffer_size);
 791     wwo->lpQueuePtr = wwo->lpPlayPtr = wwo->lpLoopPtr = NULL;
 792     wwo->dwPlayedTotal = wwo->dwWrittenTotal = 0;
 793     wwo->dwPartialOffset = 0;
 794
 795     ALSA_InitRingMessage(&wwo->msgRing);
 796
 797     wwo->hStartUpEvent = CreateEventW(NULL, FALSE, FALSE, NULL);
 798     wwo->hThread = CreateThread(NULL, 0, wodPlayer, (LPVOID)(DWORD_PTR)wDevID, 0, &(wwo->dwThreadID));
 799     if (wwo->hThread)
 800         SetThreadPriority(wwo->hThread, THREAD_PRIORITY_TIME_CRITICAL);
 801     else
 802     {
 803         ERR("Thread creation for the wodPlayer failed!\n");
 804         CloseHandle(wwo->hStartUpEvent);
 805         retcode = MMSYSERR_NOMEM;
 806         goto errexit;
 807     }
 808     WaitForSingleObject(wwo->hStartUpEvent, INFINITE);
 809     CloseHandle(wwo->hStartUpEvent);
 810     wwo->hStartUpEvent = INVALID_HANDLE_VALUE;
 811
 812     TRACE("handle=%p\n", pcm);
 813     TRACE("wBitsPerSample=%u, nAvgBytesPerSec=%u, nSamplesPerSec=%u, nChannels=%u nBlockAlign=%u!\n",
 814           wwo->format.Format.wBitsPerSample, wwo->format.Format.nAvgBytesPerSec,
 815           wwo->format.Format.nSamplesPerSec, wwo->format.Format.nChannels,
 816           wwo->format.Format.nBlockAlign);
 817
 818     HeapFree( GetProcessHeap(), 0, sw_params );
 819     wwo->pcm = pcm;
 820     wwo->hctl = hctl;
 821     if ( wwo->hw_params )
 822         snd_pcm_hw_params_free(wwo->hw_params);
 823     wwo->hw_params = hw_params;
 824
 825     return wodNotifyClient(wwo, WOM_OPEN, 0L, 0L);
 826
 827 errexit:
 828     if (pcm)
 829         snd_pcm_close(pcm);
 830
 831     if (hctl)
 832     {
 833         snd_hctl_free(hctl);
 834         snd_hctl_close(hctl);
 835     }
 836
 837     if ( hw_params )
 838         snd_pcm_hw_params_free(hw_params);
 839
 840     HeapFree( GetProcessHeap(), 0, sw_params );
 841     if (wwo->msgRing.ring_buffer_size > 0)
 842         ALSA_DestroyRingMessage(&wwo->msgRing);
 843
 844     return retcode;
 845 }
 846
 847
 848 /**************************************************************************
 849  *                              wodClose                        [internal]
 850  */
 851 static DWORD wodClose(WORD wDevID)
 852 {
 853     DWORD               ret = MMSYSERR_NOERROR;
 854     WINE_WAVEDEV*       wwo;
 855
 856     TRACE("(%u);\n", wDevID);
 857
 858     if (wDevID >= ALSA_WodNumDevs) {
 859         TRACE("Asked for device %d, but only %d known!\n", wDevID, ALSA_WodNumDevs);
 860         return MMSYSERR_BADDEVICEID;
 861     }
 862
 863     if (WOutDev[wDevID].pcm == NULL) {
 864         WARN("Requested to close already closed device %d!\n", wDevID);
 865         return MMSYSERR_BADDEVICEID;
 866     }
 867
 868     wwo = &WOutDev[wDevID];
 869     if (wwo->lpQueuePtr) {
 870         WARN("buffers still playing !\n");
 871         ret = WAVERR_STILLPLAYING;
 872     } else {
 873         if (wwo->hThread != INVALID_HANDLE_VALUE) {
 874             ALSA_AddRingMessage(&wwo->msgRing, WINE_WM_CLOSING, 0, TRUE);
 875         }
 876         ALSA_DestroyRingMessage(&wwo->msgRing);
 877
 878         if (wwo->hw_params)
 879             snd_pcm_hw_params_free(wwo->hw_params);
 880         wwo->hw_params = NULL;
 881
 882         if (wwo->pcm)
 883             snd_pcm_close(wwo->pcm);
 884         wwo->pcm = NULL;
 885
 886         if (wwo->hctl)
 887         {
 888             snd_hctl_free(wwo->hctl);
 889             snd_hctl_close(wwo->hctl);
 890         }
 891         wwo->hctl = NULL;
 892
 893         ret = wodNotifyClient(wwo, WOM_CLOSE, 0L, 0L);
 894     }
 895
 896     return ret;
 897 }
 898
 899
 900 /**************************************************************************
 901  *                              wodWrite                        [internal]
 902  *
 903  */
 904 static DWORD wodWrite(WORD wDevID, LPWAVEHDR lpWaveHdr, DWORD dwSize)
 905 {
 906     TRACE("(%u, %p, %08X);\n", wDevID, lpWaveHdr, dwSize);
 907
 908     if (wDevID >= ALSA_WodNumDevs) {
 909         TRACE("Asked for device %d, but only %d known!\n", wDevID, ALSA_WodNumDevs);
 910         return MMSYSERR_BADDEVICEID;
 911     }
 912
 913     if (WOutDev[wDevID].pcm == NULL) {
 914         WARN("Requested to write to closed device %d!\n", wDevID);
 915         return MMSYSERR_BADDEVICEID;
 916     }
 917
 918     if (lpWaveHdr->lpData == NULL || !(lpWaveHdr->dwFlags & WHDR_PREPARED))
 919         return WAVERR_UNPREPARED;
 920
 921     if (lpWaveHdr->dwFlags & WHDR_INQUEUE)
 922         return WAVERR_STILLPLAYING;
 923
 924     lpWaveHdr->dwFlags &= ~WHDR_DONE;
 925     lpWaveHdr->dwFlags |= WHDR_INQUEUE;
 926     lpWaveHdr->lpNext = 0;
 927
 928     ALSA_AddRingMessage(&WOutDev[wDevID].msgRing, WINE_WM_HEADER, (DWORD_PTR)lpWaveHdr, FALSE);
 929
 930     return MMSYSERR_NOERROR;
 931 }
 932
 933 /**************************************************************************
 934  *                      wodPause                                [internal]
 935  */
 936 static DWORD wodPause(WORD wDevID)
 937 {
 938     TRACE("(%u);!\n", wDevID);
 939
 940     if (wDevID >= ALSA_WodNumDevs) {
 941         TRACE("Asked for device %d, but only %d known!\n", wDevID, ALSA_WodNumDevs);
 942         return MMSYSERR_BADDEVICEID;
 943     }
 944
 945     if (WOutDev[wDevID].pcm == NULL) {
 946         WARN("Requested to pause closed device %d!\n", wDevID);
 947         return MMSYSERR_BADDEVICEID;
 948     }
 949
 950     ALSA_AddRingMessage(&WOutDev[wDevID].msgRing, WINE_WM_PAUSING, 0, TRUE);
 951
 952     return MMSYSERR_NOERROR;
 953 }
 954
 955 /**************************************************************************
 956  *                      wodRestart                              [internal]
 957  */
 958 static DWORD wodRestart(WORD wDevID)
 959 {
 960     TRACE("(%u);\n", wDevID);
 961
 962     if (wDevID >= ALSA_WodNumDevs) {
 963         TRACE("Asked for device %d, but only %d known!\n", wDevID, ALSA_WodNumDevs);
 964         return MMSYSERR_BADDEVICEID;
 965     }
 966
 967     if (WOutDev[wDevID].pcm == NULL) {
 968         WARN("Requested to restart closed device %d!\n", wDevID);
 969         return MMSYSERR_BADDEVICEID;
 970     }
 971
 972     if (WOutDev[wDevID].state == WINE_WS_PAUSED) {
 973         ALSA_AddRingMessage(&WOutDev[wDevID].msgRing, WINE_WM_RESTARTING, 0, TRUE);
 974     }
 975
 976     /* FIXME: is NotifyClient with WOM_DONE right ? (Comet Busters 1.3.3 needs this notification) */
 977     /* FIXME: Myst crashes with this ... hmm -MM
 978        return wodNotifyClient(wwo, WOM_DONE, 0L, 0L);
 979     */
 980
 981     return MMSYSERR_NOERROR;
 982 }
 983
 984 /**************************************************************************
 985  *                      wodReset                                [internal]
 986  */
 987 static DWORD wodReset(WORD wDevID)
 988 {
 989     TRACE("(%u);\n", wDevID);
 990
 991     if (wDevID >= ALSA_WodNumDevs) {
 992         TRACE("Asked for device %d, but only %d known!\n", wDevID, ALSA_WodNumDevs);
 993         return MMSYSERR_BADDEVICEID;
 994     }
 995
 996     if (WOutDev[wDevID].pcm == NULL) {
 997         WARN("Requested to reset closed device %d!\n", wDevID);
 998         return MMSYSERR_BADDEVICEID;
 999     }
1000
1001     ALSA_AddRingMessage(&WOutDev[wDevID].msgRing, WINE_WM_RESETTING, 0, TRUE);
1002
1003     return MMSYSERR_NOERROR;
1004 }
1005
1006 /**************************************************************************
1007  *                              wodGetPosition                  [internal]
1008  */
1009 static DWORD wodGetPosition(WORD wDevID, LPMMTIME lpTime, DWORD uSize)
1010 {
1011     WINE_WAVEDEV*       wwo;
1012
1013     TRACE("(%u, %p, %u);\n", wDevID, lpTime, uSize);
1014
1015     if (wDevID >= ALSA_WodNumDevs) {
1016         TRACE("Asked for device %d, but only %d known!\n", wDevID, ALSA_WodNumDevs);
1017         return MMSYSERR_BADDEVICEID;
1018     }
1019
1020     if (WOutDev[wDevID].pcm == NULL) {
1021         WARN("Requested to get position of closed device %d!\n", wDevID);
1022         return MMSYSERR_BADDEVICEID;
1023     }
1024
1025     if (lpTime == NULL) return MMSYSERR_INVALPARAM;
1026
1027     wwo = &WOutDev[wDevID];
1028     return ALSA_bytes_to_mmtime(lpTime, wwo->dwPlayedTotal, &wwo->format);
1029 }
1030
1031 /**************************************************************************
1032  *                              wodBreakLoop                    [internal]
1033  */
1034 static DWORD wodBreakLoop(WORD wDevID)
1035 {
1036     TRACE("(%u);\n", wDevID);
1037
1038     if (wDevID >= ALSA_WodNumDevs) {
1039         TRACE("Asked for device %d, but only %d known!\n", wDevID, ALSA_WodNumDevs);
1040         return MMSYSERR_BADDEVICEID;
1041     }
1042
1043     if (WOutDev[wDevID].pcm == NULL) {
1044         WARN("Requested to breakloop of closed device %d!\n", wDevID);
1045         return MMSYSERR_BADDEVICEID;
1046     }
1047
1048     ALSA_AddRingMessage(&WOutDev[wDevID].msgRing, WINE_WM_BREAKLOOP, 0, TRUE);
1049     return MMSYSERR_NOERROR;
1050 }
1051
1052 /**************************************************************************
1053  *                              wodGetVolume                    [internal]
1054  */
1055 static DWORD wodGetVolume(WORD wDevID, LPDWORD lpdwVol)
1056 {
1057     WORD               wleft, wright;
1058     WINE_WAVEDEV*      wwo;
1059     int                min, max;
1060     int                left, right;
1061     DWORD              rc;
1062
1063     TRACE("(%u, %p);\n", wDevID, lpdwVol);
1064     if (wDevID >= ALSA_WodNumDevs) {
1065         TRACE("Asked for device %d, but only %d known!\n", wDevID, ALSA_WodNumDevs);
1066         return MMSYSERR_BADDEVICEID;
1067     }
1068
1069     if (lpdwVol == NULL)
1070         return MMSYSERR_NOTENABLED;
1071
1072     wwo = &WOutDev[wDevID];
1073
1074     if (lpdwVol == NULL)
1075         return MMSYSERR_NOTENABLED;
1076
1077     rc = ALSA_CheckSetVolume(wwo->hctl, &left, &right, &min, &max, NULL, NULL, NULL);
1078     if (rc == MMSYSERR_NOERROR)
1079     {
1080 #define VOLUME_ALSA_TO_WIN(x) (  ( (((x)-min) * 65535) + (max-min)/2 ) /(max-min))
1081         wleft = VOLUME_ALSA_TO_WIN(left);
1082         wright = VOLUME_ALSA_TO_WIN(right);
1083 #undef VOLUME_ALSA_TO_WIN
1084         TRACE("left=%d,right=%d,converted to windows left %d, right %d\n", left, right, wleft, wright);
1085         *lpdwVol = MAKELONG( wleft, wright );
1086     }
1087     else
1088         TRACE("CheckSetVolume failed; rc %d\n", rc);
1089
1090     return rc;
1091 }
1092
1093 /**************************************************************************
1094  *                              wodSetVolume                    [internal]
1095  */
1096 static DWORD wodSetVolume(WORD wDevID, DWORD dwParam)
1097 {
1098     WORD               wleft, wright;
1099     WINE_WAVEDEV*      wwo;
1100     int                min, max;
1101     int                left, right;
1102     DWORD              rc;
1103
1104     TRACE("(%u, %08X);\n", wDevID, dwParam);
1105     if (wDevID >= ALSA_WodNumDevs) {
1106         TRACE("Asked for device %d, but only %d known!\n", wDevID, ALSA_WodNumDevs);
1107         return MMSYSERR_BADDEVICEID;
1108     }
1109
1110     wwo = &WOutDev[wDevID];
1111
1112     rc = ALSA_CheckSetVolume(wwo->hctl, NULL, NULL, &min, &max, NULL, NULL, NULL);
1113     if (rc == MMSYSERR_NOERROR)
1114     {
1115         wleft  = LOWORD(dwParam);
1116         wright = HIWORD(dwParam);
1117 #define VOLUME_WIN_TO_ALSA(x) ( (  ( ((x) * (max-min)) + 32767) / 65535) + min )
1118         left = VOLUME_WIN_TO_ALSA(wleft);
1119         right = VOLUME_WIN_TO_ALSA(wright);
1120 #undef VOLUME_WIN_TO_ALSA
1121         rc = ALSA_CheckSetVolume(wwo->hctl, NULL, NULL, NULL, NULL, NULL, &left, &right);
1122         if (rc == MMSYSERR_NOERROR)
1123             TRACE("set volume:  wleft=%d, wright=%d, converted to alsa left %d, right %d\n", wleft, wright, left, right);
1124         else
1125             TRACE("SetVolume failed; rc %d\n", rc);
1126     }
1127
1128     return rc;
1129 }
1130
1131 /**************************************************************************
1132  *                              wodGetNumDevs                   [internal]
1133  */
1134 static  DWORD   wodGetNumDevs(void)
1135 {
1136     return ALSA_WodNumDevs;
1137 }
1138
1139 /**************************************************************************
1140  *                              wodDevInterfaceSize             [internal]
1141  */
1142 static DWORD wodDevInterfaceSize(UINT wDevID, LPDWORD dwParam1)
1143 {
1144     TRACE("(%u, %p)\n", wDevID, dwParam1);
1145
1146     *dwParam1 = MultiByteToWideChar(CP_UNIXCP, 0, WOutDev[wDevID].interface_name, -1,
1147                                     NULL, 0 ) * sizeof(WCHAR);
1148     return MMSYSERR_NOERROR;
1149 }
1150
1151 /**************************************************************************
1152  *                              wodDevInterface                 [internal]
1153  */
1154 static DWORD wodDevInterface(UINT wDevID, PWCHAR dwParam1, DWORD dwParam2)
1155 {
1156     if (dwParam2 >= MultiByteToWideChar(CP_UNIXCP, 0, WOutDev[wDevID].interface_name, -1,
1157                                         NULL, 0 ) * sizeof(WCHAR))
1158     {
1159         MultiByteToWideChar(CP_UNIXCP, 0, WOutDev[wDevID].interface_name, -1,
1160                             dwParam1, dwParam2 / sizeof(WCHAR));
1161         return MMSYSERR_NOERROR;
1162     }
1163     return MMSYSERR_INVALPARAM;
1164 }
1165
1166 /**************************************************************************
1167  *                              wodMessage (WINEALSA.@)
1168  */
1169 DWORD WINAPI ALSA_wodMessage(UINT wDevID, UINT wMsg, DWORD_PTR dwUser,
1170                              DWORD_PTR dwParam1, DWORD_PTR dwParam2)
1171 {
1172     TRACE("(%u, %s, %08lX, %08lX, %08lX);\n",
1173           wDevID, ALSA_getMessage(wMsg), dwUser, dwParam1, dwParam2);
1174
1175     switch (wMsg) {
1176     case DRVM_INIT:
1177     case DRVM_EXIT:
1178     case DRVM_ENABLE:
1179     case DRVM_DISABLE:
1180         /* FIXME: Pretend this is supported */
1181         return 0;
1182     case WODM_OPEN:             return wodOpen          (wDevID, (LPWAVEOPENDESC)dwParam1,      dwParam2);
1183     case WODM_CLOSE:            return wodClose         (wDevID);
1184     case WODM_GETDEVCAPS:       return wodGetDevCaps    (wDevID, (LPWAVEOUTCAPSW)dwParam1,      dwParam2);
1185     case WODM_GETNUMDEVS:       return wodGetNumDevs    ();
1186     case WODM_GETPITCH:         return MMSYSERR_NOTSUPPORTED;
1187     case WODM_SETPITCH:         return MMSYSERR_NOTSUPPORTED;
1188     case WODM_GETPLAYBACKRATE:  return MMSYSERR_NOTSUPPORTED;
1189     case WODM_SETPLAYBACKRATE:  return MMSYSERR_NOTSUPPORTED;
1190     case WODM_WRITE:            return wodWrite         (wDevID, (LPWAVEHDR)dwParam1,           dwParam2);
1191     case WODM_PAUSE:            return wodPause         (wDevID);
1192     case WODM_GETPOS:           return wodGetPosition   (wDevID, (LPMMTIME)dwParam1,            dwParam2);
1193     case WODM_BREAKLOOP:        return wodBreakLoop     (wDevID);
1194     case WODM_PREPARE:          return MMSYSERR_NOTSUPPORTED;
1195     case WODM_UNPREPARE:        return MMSYSERR_NOTSUPPORTED;
1196     case WODM_GETVOLUME:        return wodGetVolume     (wDevID, (LPDWORD)dwParam1);
1197     case WODM_SETVOLUME:        return wodSetVolume     (wDevID, dwParam1);
1198     case WODM_RESTART:          return wodRestart       (wDevID);
1199     case WODM_RESET:            return wodReset         (wDevID);
1200     case DRV_QUERYDEVICEINTERFACESIZE: return wodDevInterfaceSize       (wDevID, (LPDWORD)dwParam1);
1201     case DRV_QUERYDEVICEINTERFACE:     return wodDevInterface           (wDevID, (PWCHAR)dwParam1, dwParam2);
1202     case DRV_QUERYDSOUNDIFACE:  return wodDsCreate      (wDevID, (PIDSDRIVER*)dwParam1);
1203     case DRV_QUERYDSOUNDDESC:   return wodDsDesc        (wDevID, (PDSDRIVERDESC)dwParam1);
1204
1205     default:
1206         FIXME("unknown message %d!\n", wMsg);
1207     }
1208     return MMSYSERR_NOTSUPPORTED;
1209 }
1210
1211 #else /* HAVE_ALSA */
1212
1213 /**************************************************************************
1214  *                              wodMessage (WINEALSA.@)
1215  */
1216 DWORD WINAPI ALSA_wodMessage(WORD wDevID, WORD wMsg, DWORD dwUser,
1217                              DWORD dwParam1, DWORD dwParam2)
1218 {
1219     FIXME("(%u, %04X, %08X, %08X, %08X):stub\n", wDevID, wMsg, dwUser, dwParam1, dwParam2);
1220     return MMSYSERR_NOTENABLED;
1221 }
1222
1223 #endif /* HAVE_ALSA */