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