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 = 0;
 101     snd_pcm_sframes_t avail = 0;
 102     snd_pcm_uframes_t buf_size = 0;
 103     snd_pcm_state_t state;
 104     int err;
 105
 106     state = snd_pcm_state(wwo->pcm);
 107     avail = snd_pcm_avail_update(wwo->pcm);
 108     err = snd_pcm_hw_params_get_buffer_size(wwo->hw_params, &buf_size);
 109     delay = buf_size - avail;
 110
 111     if (state != SND_PCM_STATE_RUNNING && state != SND_PCM_STATE_PREPARED)
 112     {
 113         WARN("Unexpected state (%d) while updating Total Played, resetting\n", state);
 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             ALSA_XRUNRecovery(wwo, written);
 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 >= 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 (%u/%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     /* flush all possible output */
 327     snd_pcm_drain(wwo->pcm);
 328
 329     wodUpdatePlayedTotal(wwo, NULL);
 330     /* updates current notify list */
 331     wodPlayer_NotifyCompletions(wwo, FALSE);
 332
 333     if ( (err = snd_pcm_drop(wwo->pcm)) < 0) {
 334         FIXME("flush: %s\n", snd_strerror(err));
 335         wwo->hThread = 0;
 336         wwo->state = WINE_WS_STOPPED;
 337         ExitThread(-1);
 338     }
 339     if ( (err = snd_pcm_prepare(wwo->pcm)) < 0 )
 340         ERR("pcm prepare failed: %s\n", snd_strerror(err));
 341
 342     if (reset) {
 343         enum win_wm_message     msg;
 344         DWORD_PTR               param;
 345         HANDLE                  ev;
 346
 347         /* remove any buffer */
 348         wodPlayer_NotifyCompletions(wwo, TRUE);
 349
 350         wwo->lpPlayPtr = wwo->lpQueuePtr = wwo->lpLoopPtr = NULL;
 351         wwo->state = WINE_WS_STOPPED;
 352         wwo->dwPlayedTotal = wwo->dwWrittenTotal = 0;
 353         /* Clear partial wavehdr */
 354         wwo->dwPartialOffset = 0;
 355
 356         /* remove any existing message in the ring */
 357         EnterCriticalSection(&wwo->msgRing.msg_crst);
 358         /* return all pending headers in queue */
 359         while (ALSA_RetrieveRingMessage(&wwo->msgRing, &msg, &param, &ev))
 360         {
 361             if (msg != WINE_WM_HEADER)
 362             {
 363                 FIXME("shouldn't have headers left\n");
 364                 SetEvent(ev);
 365                 continue;
 366             }
 367             ((LPWAVEHDR)param)->dwFlags &= ~WHDR_INQUEUE;
 368             ((LPWAVEHDR)param)->dwFlags |= WHDR_DONE;
 369
 370                 wodNotifyClient(wwo, WOM_DONE, param, 0);
 371         }
 372         ALSA_ResetRingMessage(&wwo->msgRing);
 373         LeaveCriticalSection(&wwo->msgRing.msg_crst);
 374     } else {
 375         if (wwo->lpLoopPtr) {
 376             /* complicated case, not handled yet (could imply modifying the loop counter */
 377             FIXME("Pausing while in loop isn't correctly handled yet, except strange results\n");
 378             wwo->lpPlayPtr = wwo->lpLoopPtr;
 379             wwo->dwPartialOffset = 0;
 380             wwo->dwWrittenTotal = wwo->dwPlayedTotal; /* this is wrong !!! */
 381         } else {
 382             LPWAVEHDR   ptr;
 383             DWORD       sz = wwo->dwPartialOffset;
 384
 385             /* reset all the data as if we had written only up to lpPlayedTotal bytes */
 386             /* compute the max size playable from lpQueuePtr */
 387             for (ptr = wwo->lpQueuePtr; ptr != wwo->lpPlayPtr; ptr = ptr->lpNext) {
 388                 sz += ptr->dwBufferLength;
 389             }
 390             /* because the reset lpPlayPtr will be lpQueuePtr */
 391             if (wwo->dwWrittenTotal > wwo->dwPlayedTotal + sz) ERR("grin\n");
 392             wwo->dwPartialOffset = sz - (wwo->dwWrittenTotal - wwo->dwPlayedTotal);
 393             wwo->dwWrittenTotal = wwo->dwPlayedTotal;
 394             wwo->lpPlayPtr = wwo->lpQueuePtr;
 395         }
 396         wwo->state = WINE_WS_PAUSED;
 397     }
 398 }
 399
 400 /**************************************************************************
 401  *                    wodPlayer_ProcessMessages                 [internal]
 402  */
 403 static void wodPlayer_ProcessMessages(WINE_WAVEDEV* wwo)
 404 {
 405     LPWAVEHDR           lpWaveHdr;
 406     enum win_wm_message msg;
 407     DWORD_PTR           param;
 408     HANDLE              ev;
 409     int                 err;
 410
 411     while (ALSA_RetrieveRingMessage(&wwo->msgRing, &msg, &param, &ev)) {
 412      TRACE("Received %s %lx\n", ALSA_getCmdString(msg), param);
 413
 414         switch (msg) {
 415         case WINE_WM_PAUSING:
 416             if ( snd_pcm_state(wwo->pcm) == SND_PCM_STATE_RUNNING )
 417              {
 418                 if ( snd_pcm_hw_params_can_pause(wwo->hw_params) )
 419                 {
 420                     err = snd_pcm_pause(wwo->pcm, 1);
 421                     if ( err < 0 )
 422                         ERR("pcm_pause failed: %s\n", snd_strerror(err));
 423                     wwo->state = WINE_WS_PAUSED;
 424                 }
 425                 else
 426                 {
 427                     wodPlayer_Reset(wwo,FALSE);
 428                 }
 429              }
 430             SetEvent(ev);
 431             break;
 432         case WINE_WM_RESTARTING:
 433             if (wwo->state == WINE_WS_PAUSED)
 434             {
 435                 if ( snd_pcm_state(wwo->pcm) == SND_PCM_STATE_PAUSED )
 436                  {
 437                     err = snd_pcm_pause(wwo->pcm, 0);
 438                     if ( err < 0 )
 439                         ERR("pcm_pause failed: %s\n", snd_strerror(err));
 440                  }
 441                 wwo->state = WINE_WS_PLAYING;
 442             }
 443             SetEvent(ev);
 444             break;
 445         case WINE_WM_HEADER:
 446             lpWaveHdr = (LPWAVEHDR)param;
 447
 448             /* insert buffer at the end of queue */
 449             {
 450                 LPWAVEHDR*      wh;
 451                 for (wh = &(wwo->lpQueuePtr); *wh; wh = &((*wh)->lpNext));
 452                 *wh = lpWaveHdr;
 453             }
 454             if (!wwo->lpPlayPtr)
 455                 wodPlayer_BeginWaveHdr(wwo,lpWaveHdr);
 456             if (wwo->state == WINE_WS_STOPPED)
 457                 wwo->state = WINE_WS_PLAYING;
 458             break;
 459         case WINE_WM_RESETTING:
 460             wodPlayer_Reset(wwo,TRUE);
 461             SetEvent(ev);
 462             break;
 463         case WINE_WM_BREAKLOOP:
 464             if (wwo->state == WINE_WS_PLAYING && wwo->lpLoopPtr != NULL) {
 465                 /* ensure exit at end of current loop */
 466                 wwo->dwLoops = 1;
 467             }
 468             SetEvent(ev);
 469             break;
 470         case WINE_WM_CLOSING:
 471             /* sanity check: this should not happen since the device must have been reset before */
 472             if (wwo->lpQueuePtr || wwo->lpPlayPtr) ERR("out of sync\n");
 473             wwo->hThread = 0;
 474             wwo->state = WINE_WS_CLOSED;
 475             SetEvent(ev);
 476             ExitThread(0);
 477             /* shouldn't go here */
 478         default:
 479             FIXME("unknown message %d\n", msg);
 480             break;
 481         }
 482     }
 483 }
 484
 485 /**************************************************************************
 486  *                           wodPlayer_FeedDSP                  [internal]
 487  * Feed as much sound data as we can into the DSP and return the number of
 488  * milliseconds before it will be necessary to feed the DSP again.
 489  */
 490 static DWORD wodPlayer_FeedDSP(WINE_WAVEDEV* wwo)
 491 {
 492     DWORD               availInQ;
 493
 494     wodUpdatePlayedTotal(wwo, NULL);
 495     availInQ = snd_pcm_avail_update(wwo->pcm);
 496
 497     /* no more room... no need to try to feed */
 498     if (availInQ > 0) {
 499         /* Feed from partial wavehdr */
 500         if (wwo->lpPlayPtr && wwo->dwPartialOffset != 0) {
 501             wodPlayer_WriteMaxFrags(wwo, &availInQ);
 502         }
 503
 504         /* Feed wavehdrs until we run out of wavehdrs or DSP space */
 505         if (wwo->dwPartialOffset == 0 && wwo->lpPlayPtr) {
 506             do {
 507                 TRACE("Setting time to elapse for %p to %u\n",
 508                       wwo->lpPlayPtr, wwo->dwWrittenTotal + wwo->lpPlayPtr->dwBufferLength);
 509                 /* note the value that dwPlayedTotal will return when this wave finishes playing */
 510                 wwo->lpPlayPtr->reserved = wwo->dwWrittenTotal + wwo->lpPlayPtr->dwBufferLength;
 511             } while (wodPlayer_WriteMaxFrags(wwo, &availInQ) && wwo->lpPlayPtr && availInQ > 0);
 512         }
 513     }
 514
 515     return wodPlayer_DSPWait(wwo);
 516 }
 517
 518 /**************************************************************************
 519  *                              wodPlayer                       [internal]
 520  */
 521 static  DWORD   CALLBACK        wodPlayer(LPVOID pmt)
 522 {
 523     WORD          uDevID = (DWORD_PTR)pmt;
 524     WINE_WAVEDEV* wwo = (WINE_WAVEDEV*)&WOutDev[uDevID];
 525     DWORD         dwNextFeedTime = INFINITE;   /* Time before DSP needs feeding */
 526     DWORD         dwNextNotifyTime = INFINITE; /* Time before next wave completion */
 527     DWORD         dwSleepTime;
 528
 529     wwo->state = WINE_WS_STOPPED;
 530     SetEvent(wwo->hStartUpEvent);
 531
 532     for (;;) {
 533         /** Wait for the shortest time before an action is required.  If there
 534          *  are no pending actions, wait forever for a command.
 535          */
 536         dwSleepTime = min(dwNextFeedTime, dwNextNotifyTime);
 537         TRACE("waiting %ums (%u,%u)\n", dwSleepTime, dwNextFeedTime, dwNextNotifyTime);
 538         ALSA_WaitRingMessage(&wwo->msgRing, dwSleepTime);
 539         wodPlayer_ProcessMessages(wwo);
 540         if (wwo->state == WINE_WS_PLAYING) {
 541             dwNextFeedTime = wodPlayer_FeedDSP(wwo);
 542             dwNextNotifyTime = wodPlayer_NotifyCompletions(wwo, FALSE);
 543             if (dwNextFeedTime == INFINITE) {
 544                 /* FeedDSP ran out of data, but before giving up, */
 545                 /* check that a notification didn't give us more */
 546                 wodPlayer_ProcessMessages(wwo);
 547                 if (wwo->lpPlayPtr) {
 548                     TRACE("recovering\n");
 549                     dwNextFeedTime = wodPlayer_FeedDSP(wwo);
 550                 }
 551             }
 552         } else {
 553             dwNextFeedTime = dwNextNotifyTime = INFINITE;
 554         }
 555     }
 556     return 0;
 557 }
 558
 559 /**************************************************************************
 560  *                      wodGetDevCaps                           [internal]
 561  */
 562 static DWORD wodGetDevCaps(WORD wDevID, LPWAVEOUTCAPSW lpCaps, DWORD dwSize)
 563 {
 564     TRACE("(%u, %p, %u);\n", wDevID, lpCaps, dwSize);
 565
 566     if (lpCaps == NULL) return MMSYSERR_NOTENABLED;
 567
 568     if (wDevID >= ALSA_WodNumDevs) {
 569         TRACE("Asked for device %d, but only %d known!\n", wDevID, ALSA_WodNumDevs);
 570         return MMSYSERR_BADDEVICEID;
 571     }
 572
 573     memcpy(lpCaps, &WOutDev[wDevID].outcaps, min(dwSize, sizeof(*lpCaps)));
 574     return MMSYSERR_NOERROR;
 575 }
 576
 577 /**************************************************************************
 578  *                              wodOpen                         [internal]
 579  */
 580 static DWORD wodOpen(WORD wDevID, LPWAVEOPENDESC lpDesc, DWORD dwFlags)
 581 {
 582     WINE_WAVEDEV*               wwo;
 583     snd_pcm_t *                 pcm = NULL;
 584     snd_hctl_t *                hctl = NULL;
 585     snd_pcm_hw_params_t *       hw_params = NULL;
 586     snd_pcm_sw_params_t *       sw_params;
 587     snd_pcm_access_t            access;
 588     snd_pcm_format_t            format = -1;
 589     unsigned int                rate;
 590     unsigned int                buffer_time = 120000;
 591     unsigned int                period_time = 22000;
 592     snd_pcm_uframes_t           buffer_size;
 593     snd_pcm_uframes_t           period_size;
 594     int                         flags;
 595     int                         err=0;
 596     int                         dir=0;
 597     DWORD                       retcode = 0;
 598
 599     TRACE("(%u, %p, %08X);\n", wDevID, lpDesc, dwFlags);
 600     if (lpDesc == NULL) {
 601         WARN("Invalid Parameter !\n");
 602         return MMSYSERR_INVALPARAM;
 603     }
 604     if (wDevID >= ALSA_WodNumDevs) {
 605         TRACE("Asked for device %d, but only %d known!\n", wDevID, ALSA_WodNumDevs);
 606         return MMSYSERR_BADDEVICEID;
 607     }
 608
 609     /* only PCM format is supported so far... */
 610     if (!ALSA_supportedFormat(lpDesc->lpFormat)) {
 611         WARN("Bad format: tag=%04X nChannels=%d nSamplesPerSec=%d !\n",
 612              lpDesc->lpFormat->wFormatTag, lpDesc->lpFormat->nChannels,
 613              lpDesc->lpFormat->nSamplesPerSec);
 614         return WAVERR_BADFORMAT;
 615     }
 616
 617     if (dwFlags & WAVE_FORMAT_QUERY) {
 618         TRACE("Query format: tag=%04X nChannels=%d nSamplesPerSec=%d !\n",
 619              lpDesc->lpFormat->wFormatTag, lpDesc->lpFormat->nChannels,
 620              lpDesc->lpFormat->nSamplesPerSec);
 621         return MMSYSERR_NOERROR;
 622     }
 623
 624     wwo = &WOutDev[wDevID];
 625
 626     if (wwo->pcm != NULL) {
 627         WARN("%d already allocated\n", wDevID);
 628         return MMSYSERR_ALLOCATED;
 629     }
 630
 631     if (dwFlags & WAVE_DIRECTSOUND)
 632         FIXME("Why are we called with DirectSound flag? It doesn't use MMSYSTEM any more\n");
 633         /* not supported, ignore it */
 634     dwFlags &= ~WAVE_DIRECTSOUND;
 635
 636     flags = SND_PCM_NONBLOCK;
 637
 638     if ( (err = snd_pcm_open(&pcm, wwo->pcmname, SND_PCM_STREAM_PLAYBACK, flags)) < 0)
 639     {
 640         ERR("Error open: %s\n", snd_strerror(err));
 641         return MMSYSERR_NOTENABLED;
 642     }
 643
 644     if (wwo->ctlname)
 645     {
 646         err = snd_hctl_open(&hctl, wwo->ctlname, 0);
 647         if (err >= 0)
 648         {
 649             snd_hctl_load(hctl);
 650         }
 651         else
 652         {
 653             WARN("Could not open hctl for [%s]: %s\n", wwo->ctlname, snd_strerror(err));
 654             hctl = NULL;
 655         }
 656     }
 657
 658     wwo->wFlags = HIWORD(dwFlags & CALLBACK_TYPEMASK);
 659
 660     wwo->waveDesc = *lpDesc;
 661     ALSA_copyFormat(lpDesc->lpFormat, &wwo->format);
 662
 663     TRACE("Requested this format: %dx%dx%d %s\n",
 664           wwo->format.Format.nSamplesPerSec,
 665           wwo->format.Format.wBitsPerSample,
 666           wwo->format.Format.nChannels,
 667           ALSA_getFormat(wwo->format.Format.wFormatTag));
 668
 669     if (wwo->format.Format.wBitsPerSample == 0) {
 670         WARN("Resetting zeroed wBitsPerSample\n");
 671         wwo->format.Format.wBitsPerSample = 8 *
 672             (wwo->format.Format.nAvgBytesPerSec /
 673              wwo->format.Format.nSamplesPerSec) /
 674             wwo->format.Format.nChannels;
 675     }
 676
 677 #define EXIT_ON_ERROR(f,e,txt) do \
 678 { \
 679     int err; \
 680     if ( (err = (f) ) < 0) \
 681     { \
 682         WARN(txt ": %s\n", snd_strerror(err)); \
 683         retcode=e; \
 684         goto errexit; \
 685     } \
 686 } while(0)
 687
 688     sw_params = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, snd_pcm_sw_params_sizeof() );
 689     snd_pcm_hw_params_malloc(&hw_params);
 690     if (! hw_params)
 691     {
 692         retcode = MMSYSERR_NOMEM;
 693         goto errexit;
 694     }
 695     snd_pcm_hw_params_any(pcm, hw_params);
 696
 697     access = SND_PCM_ACCESS_MMAP_INTERLEAVED;
 698     if ( ( err = snd_pcm_hw_params_set_access(pcm, hw_params, access ) ) < 0) {
 699         WARN("mmap not available. switching to standard write.\n");
 700         access = SND_PCM_ACCESS_RW_INTERLEAVED;
 701         EXIT_ON_ERROR( snd_pcm_hw_params_set_access(pcm, hw_params, access ), MMSYSERR_INVALPARAM, "unable to set access for playback");
 702         wwo->write = snd_pcm_writei;
 703     }
 704     else
 705         wwo->write = snd_pcm_mmap_writei;
 706
 707     if ((err = snd_pcm_hw_params_set_channels(pcm, hw_params, wwo->format.Format.nChannels)) < 0) {
 708         WARN("unable to set required channels: %d\n", wwo->format.Format.nChannels);
 709         EXIT_ON_ERROR( snd_pcm_hw_params_set_channels(pcm, hw_params, wwo->format.Format.nChannels ), WAVERR_BADFORMAT, "unable to set required channels" );
 710     }
 711
 712     if ((wwo->format.Format.wFormatTag == WAVE_FORMAT_PCM) ||
 713         ((wwo->format.Format.wFormatTag == WAVE_FORMAT_EXTENSIBLE) &&
 714         IsEqualGUID(&wwo->format.SubFormat, &KSDATAFORMAT_SUBTYPE_PCM))) {
 715         format = (wwo->format.Format.wBitsPerSample == 8) ? SND_PCM_FORMAT_U8 :
 716                  (wwo->format.Format.wBitsPerSample == 16) ? SND_PCM_FORMAT_S16_LE :
 717                  (wwo->format.Format.wBitsPerSample == 24) ? SND_PCM_FORMAT_S24_3LE :
 718                  (wwo->format.Format.wBitsPerSample == 32) ? SND_PCM_FORMAT_S32_LE : -1;
 719     } else if ((wwo->format.Format.wFormatTag == WAVE_FORMAT_EXTENSIBLE) &&
 720         IsEqualGUID(&wwo->format.SubFormat, &KSDATAFORMAT_SUBTYPE_IEEE_FLOAT)){
 721         format = (wwo->format.Format.wBitsPerSample == 32) ? SND_PCM_FORMAT_FLOAT_LE : -1;
 722     } else if (wwo->format.Format.wFormatTag == WAVE_FORMAT_MULAW) {
 723         FIXME("unimplemented format: WAVE_FORMAT_MULAW\n");
 724         retcode = WAVERR_BADFORMAT;
 725         goto errexit;
 726     } else if (wwo->format.Format.wFormatTag == WAVE_FORMAT_ALAW) {
 727         FIXME("unimplemented format: WAVE_FORMAT_ALAW\n");
 728         retcode = WAVERR_BADFORMAT;
 729         goto errexit;
 730     } else if (wwo->format.Format.wFormatTag == WAVE_FORMAT_ADPCM) {
 731         FIXME("unimplemented format: WAVE_FORMAT_ADPCM\n");
 732         retcode = WAVERR_BADFORMAT;
 733         goto errexit;
 734     } else {
 735         ERR("invalid format: %0x04x\n", wwo->format.Format.wFormatTag);
 736         retcode = WAVERR_BADFORMAT;
 737         goto errexit;
 738     }
 739
 740     if ((err = snd_pcm_hw_params_set_format(pcm, hw_params, format)) < 0) {
 741         WARN("unable to set required format: %s\n", snd_pcm_format_name(format));
 742         EXIT_ON_ERROR( snd_pcm_hw_params_set_format(pcm, hw_params, format), WAVERR_BADFORMAT, "unable to set required format" );
 743     }
 744
 745     rate = wwo->format.Format.nSamplesPerSec;
 746     dir=0;
 747     err = snd_pcm_hw_params_set_rate_near(pcm, hw_params, &rate, &dir);
 748     if (err < 0) {
 749         WARN("Rate %d Hz not available for playback: %s\n", wwo->format.Format.nSamplesPerSec, snd_strerror(rate));
 750         retcode = WAVERR_BADFORMAT;
 751         goto errexit;
 752     }
 753     if (!ALSA_NearMatch(rate, wwo->format.Format.nSamplesPerSec)) {
 754         WARN("Rate doesn't match (requested %d Hz, got %d Hz)\n", wwo->format.Format.nSamplesPerSec, rate);
 755         retcode = WAVERR_BADFORMAT;
 756         goto errexit;
 757     }
 758
 759     TRACE("Got this format: %dx%dx%d %s\n",
 760           wwo->format.Format.nSamplesPerSec,
 761           wwo->format.Format.wBitsPerSample,
 762           wwo->format.Format.nChannels,
 763           ALSA_getFormat(wwo->format.Format.wFormatTag));
 764
 765     dir=0;
 766     EXIT_ON_ERROR( snd_pcm_hw_params_set_buffer_time_near(pcm, hw_params, &buffer_time, &dir), MMSYSERR_INVALPARAM, "unable to set buffer time");
 767     dir=0;
 768     EXIT_ON_ERROR( snd_pcm_hw_params_set_period_time_near(pcm, hw_params, &period_time, &dir), MMSYSERR_INVALPARAM, "unable to set period time");
 769
 770     EXIT_ON_ERROR( snd_pcm_hw_params(pcm, hw_params), MMSYSERR_INVALPARAM, "unable to set hw params for playback");
 771
 772     err = snd_pcm_hw_params_get_period_size(hw_params, &period_size, &dir);
 773     err = snd_pcm_hw_params_get_buffer_size(hw_params, &buffer_size);
 774
 775     snd_pcm_sw_params_current(pcm, sw_params);
 776
 777     EXIT_ON_ERROR( snd_pcm_sw_params_set_start_threshold(pcm, sw_params, 1), MMSYSERR_ERROR, "unable to set start threshold");
 778     EXIT_ON_ERROR( snd_pcm_sw_params_set_silence_size(pcm, sw_params, 0), MMSYSERR_ERROR, "unable to set silence size");
 779     EXIT_ON_ERROR( snd_pcm_sw_params_set_avail_min(pcm, sw_params, period_size), MMSYSERR_ERROR, "unable to set avail min");
 780     EXIT_ON_ERROR( snd_pcm_sw_params_set_silence_threshold(pcm, sw_params, 0), MMSYSERR_ERROR, "unable to set silence threshold");
 781     EXIT_ON_ERROR( snd_pcm_sw_params(pcm, sw_params), MMSYSERR_ERROR, "unable to set sw params for playback");
 782 #undef EXIT_ON_ERROR
 783
 784     snd_pcm_prepare(pcm);
 785
 786     if (TRACE_ON(wave))
 787         ALSA_TraceParameters(hw_params, sw_params, FALSE);
 788
 789     /* now, we can save all required data for later use... */
 790
 791     wwo->dwBufferSize = snd_pcm_frames_to_bytes(pcm, buffer_size);
 792     wwo->lpQueuePtr = wwo->lpPlayPtr = wwo->lpLoopPtr = NULL;
 793     wwo->dwPlayedTotal = wwo->dwWrittenTotal = 0;
 794     wwo->dwPartialOffset = 0;
 795
 796     ALSA_InitRingMessage(&wwo->msgRing);
 797
 798     wwo->hStartUpEvent = CreateEventW(NULL, FALSE, FALSE, NULL);
 799     wwo->hThread = CreateThread(NULL, 0, wodPlayer, (LPVOID)(DWORD_PTR)wDevID, 0, &(wwo->dwThreadID));
 800     if (wwo->hThread)
 801         SetThreadPriority(wwo->hThread, THREAD_PRIORITY_TIME_CRITICAL);
 802     else
 803     {
 804         ERR("Thread creation for the wodPlayer failed!\n");
 805         CloseHandle(wwo->hStartUpEvent);
 806         retcode = MMSYSERR_NOMEM;
 807         goto errexit;
 808     }
 809     WaitForSingleObject(wwo->hStartUpEvent, INFINITE);
 810     CloseHandle(wwo->hStartUpEvent);
 811     wwo->hStartUpEvent = INVALID_HANDLE_VALUE;
 812
 813     TRACE("handle=%p\n", pcm);
 814     TRACE("wBitsPerSample=%u, nAvgBytesPerSec=%u, nSamplesPerSec=%u, nChannels=%u nBlockAlign=%u!\n",
 815           wwo->format.Format.wBitsPerSample, wwo->format.Format.nAvgBytesPerSec,
 816           wwo->format.Format.nSamplesPerSec, wwo->format.Format.nChannels,
 817           wwo->format.Format.nBlockAlign);
 818
 819     HeapFree( GetProcessHeap(), 0, sw_params );
 820     wwo->pcm = pcm;
 821     wwo->hctl = hctl;
 822     if ( wwo->hw_params )
 823         snd_pcm_hw_params_free(wwo->hw_params);
 824     wwo->hw_params = hw_params;
 825
 826     return wodNotifyClient(wwo, WOM_OPEN, 0L, 0L);
 827
 828 errexit:
 829     if (pcm)
 830         snd_pcm_close(pcm);
 831
 832     if (hctl)
 833     {
 834         snd_hctl_free(hctl);
 835         snd_hctl_close(hctl);
 836     }
 837
 838     if ( hw_params )
 839         snd_pcm_hw_params_free(hw_params);
 840
 841     HeapFree( GetProcessHeap(), 0, sw_params );
 842     if (wwo->msgRing.ring_buffer_size > 0)
 843         ALSA_DestroyRingMessage(&wwo->msgRing);
 844
 845     return retcode;
 846 }
 847
 848
 849 /**************************************************************************
 850  *                              wodClose                        [internal]
 851  */
 852 static DWORD wodClose(WORD wDevID)
 853 {
 854     DWORD               ret = MMSYSERR_NOERROR;
 855     WINE_WAVEDEV*       wwo;
 856
 857     TRACE("(%u);\n", wDevID);
 858
 859     if (wDevID >= ALSA_WodNumDevs) {
 860         TRACE("Asked for device %d, but only %d known!\n", wDevID, ALSA_WodNumDevs);
 861         return MMSYSERR_BADDEVICEID;
 862     }
 863
 864     if (WOutDev[wDevID].pcm == NULL) {
 865         WARN("Requested to close already closed device %d!\n", wDevID);
 866         return MMSYSERR_BADDEVICEID;
 867     }
 868
 869     wwo = &WOutDev[wDevID];
 870     if (wwo->lpQueuePtr) {
 871         WARN("buffers still playing !\n");
 872         ret = WAVERR_STILLPLAYING;
 873     } else {
 874         if (wwo->hThread != INVALID_HANDLE_VALUE) {
 875             ALSA_AddRingMessage(&wwo->msgRing, WINE_WM_CLOSING, 0, TRUE);
 876         }
 877         ALSA_DestroyRingMessage(&wwo->msgRing);
 878
 879         if (wwo->hw_params)
 880             snd_pcm_hw_params_free(wwo->hw_params);
 881         wwo->hw_params = NULL;
 882
 883         if (wwo->pcm)
 884             snd_pcm_close(wwo->pcm);
 885         wwo->pcm = NULL;
 886
 887         if (wwo->hctl)
 888         {
 889             snd_hctl_free(wwo->hctl);
 890             snd_hctl_close(wwo->hctl);
 891         }
 892         wwo->hctl = NULL;
 893
 894         ret = wodNotifyClient(wwo, WOM_CLOSE, 0L, 0L);
 895     }
 896
 897     return ret;
 898 }
 899
 900
 901 /**************************************************************************
 902  *                              wodWrite                        [internal]
 903  *
 904  */
 905 static DWORD wodWrite(WORD wDevID, LPWAVEHDR lpWaveHdr, DWORD dwSize)
 906 {
 907     TRACE("(%u, %p, %08X);\n", wDevID, lpWaveHdr, dwSize);
 908
 909     if (wDevID >= ALSA_WodNumDevs) {
 910         TRACE("Asked for device %d, but only %d known!\n", wDevID, ALSA_WodNumDevs);
 911         return MMSYSERR_BADDEVICEID;
 912     }
 913
 914     if (WOutDev[wDevID].pcm == NULL) {
 915         WARN("Requested to write to closed device %d!\n", wDevID);
 916         return MMSYSERR_BADDEVICEID;
 917     }
 918
 919     if (lpWaveHdr->lpData == NULL || !(lpWaveHdr->dwFlags & WHDR_PREPARED))
 920         return WAVERR_UNPREPARED;
 921
 922     if (lpWaveHdr->dwFlags & WHDR_INQUEUE)
 923         return WAVERR_STILLPLAYING;
 924
 925     lpWaveHdr->dwFlags &= ~WHDR_DONE;
 926     lpWaveHdr->dwFlags |= WHDR_INQUEUE;
 927     lpWaveHdr->lpNext = 0;
 928
 929     ALSA_AddRingMessage(&WOutDev[wDevID].msgRing, WINE_WM_HEADER, (DWORD_PTR)lpWaveHdr, FALSE);
 930
 931     return MMSYSERR_NOERROR;
 932 }
 933
 934 /**************************************************************************
 935  *                      wodPause                                [internal]
 936  */
 937 static DWORD wodPause(WORD wDevID)
 938 {
 939     TRACE("(%u);!\n", wDevID);
 940
 941     if (wDevID >= ALSA_WodNumDevs) {
 942         TRACE("Asked for device %d, but only %d known!\n", wDevID, ALSA_WodNumDevs);
 943         return MMSYSERR_BADDEVICEID;
 944     }
 945
 946     if (WOutDev[wDevID].pcm == NULL) {
 947         WARN("Requested to pause closed device %d!\n", wDevID);
 948         return MMSYSERR_BADDEVICEID;
 949     }
 950
 951     ALSA_AddRingMessage(&WOutDev[wDevID].msgRing, WINE_WM_PAUSING, 0, TRUE);
 952
 953     return MMSYSERR_NOERROR;
 954 }
 955
 956 /**************************************************************************
 957  *                      wodRestart                              [internal]
 958  */
 959 static DWORD wodRestart(WORD wDevID)
 960 {
 961     TRACE("(%u);\n", wDevID);
 962
 963     if (wDevID >= ALSA_WodNumDevs) {
 964         TRACE("Asked for device %d, but only %d known!\n", wDevID, ALSA_WodNumDevs);
 965         return MMSYSERR_BADDEVICEID;
 966     }
 967
 968     if (WOutDev[wDevID].pcm == NULL) {
 969         WARN("Requested to restart closed device %d!\n", wDevID);
 970         return MMSYSERR_BADDEVICEID;
 971     }
 972
 973     if (WOutDev[wDevID].state == WINE_WS_PAUSED) {
 974         ALSA_AddRingMessage(&WOutDev[wDevID].msgRing, WINE_WM_RESTARTING, 0, TRUE);
 975     }
 976
 977     /* FIXME: is NotifyClient with WOM_DONE right ? (Comet Busters 1.3.3 needs this notification) */
 978     /* FIXME: Myst crashes with this ... hmm -MM
 979        return wodNotifyClient(wwo, WOM_DONE, 0L, 0L);
 980     */
 981
 982     return MMSYSERR_NOERROR;
 983 }
 984
 985 /**************************************************************************
 986  *                      wodReset                                [internal]
 987  */
 988 static DWORD wodReset(WORD wDevID)
 989 {
 990     TRACE("(%u);\n", wDevID);
 991
 992     if (wDevID >= ALSA_WodNumDevs) {
 993         TRACE("Asked for device %d, but only %d known!\n", wDevID, ALSA_WodNumDevs);
 994         return MMSYSERR_BADDEVICEID;
 995     }
 996
 997     if (WOutDev[wDevID].pcm == NULL) {
 998         WARN("Requested to reset closed device %d!\n", wDevID);
 999         return MMSYSERR_BADDEVICEID;
1000     }
1001
1002     ALSA_AddRingMessage(&WOutDev[wDevID].msgRing, WINE_WM_RESETTING, 0, TRUE);
1003
1004     return MMSYSERR_NOERROR;
1005 }
1006
1007 /**************************************************************************
1008  *                              wodGetPosition                  [internal]
1009  */
1010 static DWORD wodGetPosition(WORD wDevID, LPMMTIME lpTime, DWORD uSize)
1011 {
1012     WINE_WAVEDEV*       wwo;
1013
1014     TRACE("(%u, %p, %u);\n", wDevID, lpTime, uSize);
1015
1016     if (wDevID >= ALSA_WodNumDevs) {
1017         TRACE("Asked for device %d, but only %d known!\n", wDevID, ALSA_WodNumDevs);
1018         return MMSYSERR_BADDEVICEID;
1019     }
1020
1021     if (WOutDev[wDevID].pcm == NULL) {
1022         WARN("Requested to get position of closed device %d!\n", wDevID);
1023         return MMSYSERR_BADDEVICEID;
1024     }
1025
1026     if (lpTime == NULL) return MMSYSERR_INVALPARAM;
1027
1028     wwo = &WOutDev[wDevID];
1029     return ALSA_bytes_to_mmtime(lpTime, wwo->dwPlayedTotal, &wwo->format);
1030 }
1031
1032 /**************************************************************************
1033  *                              wodBreakLoop                    [internal]
1034  */
1035 static DWORD wodBreakLoop(WORD wDevID)
1036 {
1037     TRACE("(%u);\n", wDevID);
1038
1039     if (wDevID >= ALSA_WodNumDevs) {
1040         TRACE("Asked for device %d, but only %d known!\n", wDevID, ALSA_WodNumDevs);
1041         return MMSYSERR_BADDEVICEID;
1042     }
1043
1044     if (WOutDev[wDevID].pcm == NULL) {
1045         WARN("Requested to breakloop of closed device %d!\n", wDevID);
1046         return MMSYSERR_BADDEVICEID;
1047     }
1048
1049     ALSA_AddRingMessage(&WOutDev[wDevID].msgRing, WINE_WM_BREAKLOOP, 0, TRUE);
1050     return MMSYSERR_NOERROR;
1051 }
1052
1053 /**************************************************************************
1054  *                              wodGetVolume                    [internal]
1055  */
1056 static DWORD wodGetVolume(WORD wDevID, LPDWORD lpdwVol)
1057 {
1058     WORD               wleft, wright;
1059     WINE_WAVEDEV*      wwo;
1060     int                min, max;
1061     int                left, right;
1062     DWORD              rc;
1063
1064     TRACE("(%u, %p);\n", wDevID, lpdwVol);
1065     if (wDevID >= ALSA_WodNumDevs) {
1066         TRACE("Asked for device %d, but only %d known!\n", wDevID, ALSA_WodNumDevs);
1067         return MMSYSERR_BADDEVICEID;
1068     }
1069
1070     if (lpdwVol == NULL)
1071         return MMSYSERR_NOTENABLED;
1072
1073     wwo = &WOutDev[wDevID];
1074
1075     if (lpdwVol == NULL)
1076         return MMSYSERR_NOTENABLED;
1077
1078     rc = ALSA_CheckSetVolume(wwo->hctl, &left, &right, &min, &max, NULL, NULL, NULL);
1079     if (rc == MMSYSERR_NOERROR)
1080     {
1081 #define VOLUME_ALSA_TO_WIN(x) (  ( (((x)-min) * 65535) + (max-min)/2 ) /(max-min))
1082         wleft = VOLUME_ALSA_TO_WIN(left);
1083         wright = VOLUME_ALSA_TO_WIN(right);
1084 #undef VOLUME_ALSA_TO_WIN
1085         TRACE("left=%d,right=%d,converted to windows left %d, right %d\n", left, right, wleft, wright);
1086         *lpdwVol = MAKELONG( wleft, wright );
1087     }
1088     else
1089         TRACE("CheckSetVolume failed; rc %d\n", rc);
1090
1091     return rc;
1092 }
1093
1094 /**************************************************************************
1095  *                              wodSetVolume                    [internal]
1096  */
1097 DWORD wodSetVolume(WORD wDevID, DWORD dwParam)
1098 {
1099     WORD               wleft, wright;
1100     WINE_WAVEDEV*      wwo;
1101     int                min, max;
1102     int                left, right;
1103     DWORD              rc;
1104
1105     TRACE("(%u, %08X);\n", wDevID, dwParam);
1106     if (wDevID >= ALSA_WodNumDevs) {
1107         TRACE("Asked for device %d, but only %d known!\n", wDevID, ALSA_WodNumDevs);
1108         return MMSYSERR_BADDEVICEID;
1109     }
1110
1111     wwo = &WOutDev[wDevID];
1112
1113     rc = ALSA_CheckSetVolume(wwo->hctl, NULL, NULL, &min, &max, NULL, NULL, NULL);
1114     if (rc == MMSYSERR_NOERROR)
1115     {
1116         wleft  = LOWORD(dwParam);
1117         wright = HIWORD(dwParam);
1118 #define VOLUME_WIN_TO_ALSA(x) ( (  ( ((x) * (max-min)) + 32767) / 65535) + min )
1119         left = VOLUME_WIN_TO_ALSA(wleft);
1120         right = VOLUME_WIN_TO_ALSA(wright);
1121 #undef VOLUME_WIN_TO_ALSA
1122         rc = ALSA_CheckSetVolume(wwo->hctl, NULL, NULL, NULL, NULL, NULL, &left, &right);
1123         if (rc == MMSYSERR_NOERROR)
1124             TRACE("set volume:  wleft=%d, wright=%d, converted to alsa left %d, right %d\n", wleft, wright, left, right);
1125         else
1126             TRACE("SetVolume failed; rc %d\n", rc);
1127     }
1128
1129     return rc;
1130 }
1131
1132 /**************************************************************************
1133  *                              wodGetNumDevs                   [internal]
1134  */
1135 static  DWORD   wodGetNumDevs(void)
1136 {
1137     return ALSA_WodNumDevs;
1138 }
1139
1140 /**************************************************************************
1141  *                              wodDevInterfaceSize             [internal]
1142  */
1143 static DWORD wodDevInterfaceSize(UINT wDevID, LPDWORD dwParam1)
1144 {
1145     TRACE("(%u, %p)\n", wDevID, dwParam1);
1146
1147     *dwParam1 = MultiByteToWideChar(CP_UNIXCP, 0, WOutDev[wDevID].interface_name, -1,
1148                                     NULL, 0 ) * sizeof(WCHAR);
1149     return MMSYSERR_NOERROR;
1150 }
1151
1152 /**************************************************************************
1153  *                              wodDevInterface                 [internal]
1154  */
1155 static DWORD wodDevInterface(UINT wDevID, PWCHAR dwParam1, DWORD dwParam2)
1156 {
1157     if (dwParam2 >= MultiByteToWideChar(CP_UNIXCP, 0, WOutDev[wDevID].interface_name, -1,
1158                                         NULL, 0 ) * sizeof(WCHAR))
1159     {
1160         MultiByteToWideChar(CP_UNIXCP, 0, WOutDev[wDevID].interface_name, -1,
1161                             dwParam1, dwParam2 / sizeof(WCHAR));
1162         return MMSYSERR_NOERROR;
1163     }
1164     return MMSYSERR_INVALPARAM;
1165 }
1166
1167 /**************************************************************************
1168  *                              wodMessage (WINEALSA.@)
1169  */
1170 DWORD WINAPI ALSA_wodMessage(UINT wDevID, UINT wMsg, DWORD_PTR dwUser,
1171                              DWORD_PTR dwParam1, DWORD_PTR dwParam2)
1172 {
1173     TRACE("(%u, %s, %08lX, %08lX, %08lX);\n",
1174           wDevID, ALSA_getMessage(wMsg), dwUser, dwParam1, dwParam2);
1175
1176     switch (wMsg) {
1177     case DRVM_INIT:
1178     case DRVM_EXIT:
1179     case DRVM_ENABLE:
1180     case DRVM_DISABLE:
1181         /* FIXME: Pretend this is supported */
1182         return 0;
1183     case WODM_OPEN:             return wodOpen          (wDevID, (LPWAVEOPENDESC)dwParam1,      dwParam2);
1184     case WODM_CLOSE:            return wodClose         (wDevID);
1185     case WODM_GETDEVCAPS:       return wodGetDevCaps    (wDevID, (LPWAVEOUTCAPSW)dwParam1,      dwParam2);
1186     case WODM_GETNUMDEVS:       return wodGetNumDevs    ();
1187     case WODM_GETPITCH:         return MMSYSERR_NOTSUPPORTED;
1188     case WODM_SETPITCH:         return MMSYSERR_NOTSUPPORTED;
1189     case WODM_GETPLAYBACKRATE:  return MMSYSERR_NOTSUPPORTED;
1190     case WODM_SETPLAYBACKRATE:  return MMSYSERR_NOTSUPPORTED;
1191     case WODM_WRITE:            return wodWrite         (wDevID, (LPWAVEHDR)dwParam1,           dwParam2);
1192     case WODM_PAUSE:            return wodPause         (wDevID);
1193     case WODM_GETPOS:           return wodGetPosition   (wDevID, (LPMMTIME)dwParam1,            dwParam2);
1194     case WODM_BREAKLOOP:        return wodBreakLoop     (wDevID);
1195     case WODM_PREPARE:          return MMSYSERR_NOTSUPPORTED;
1196     case WODM_UNPREPARE:        return MMSYSERR_NOTSUPPORTED;
1197     case WODM_GETVOLUME:        return wodGetVolume     (wDevID, (LPDWORD)dwParam1);
1198     case WODM_SETVOLUME:        return wodSetVolume     (wDevID, dwParam1);
1199     case WODM_RESTART:          return wodRestart       (wDevID);
1200     case WODM_RESET:            return wodReset         (wDevID);
1201     case DRV_QUERYDEVICEINTERFACESIZE: return wodDevInterfaceSize       (wDevID, (LPDWORD)dwParam1);
1202     case DRV_QUERYDEVICEINTERFACE:     return wodDevInterface           (wDevID, (PWCHAR)dwParam1, dwParam2);
1203     case DRV_QUERYDSOUNDIFACE:  return wodDsCreate      (wDevID, (PIDSDRIVER*)dwParam1);
1204     case DRV_QUERYDSOUNDDESC:   return wodDsDesc        (wDevID, (PDSDRIVERDESC)dwParam1);
1205
1206     default:
1207         FIXME("unknown message %d!\n", wMsg);
1208     }
1209     return MMSYSERR_NOTSUPPORTED;
1210 }
1211
1212 #else /* HAVE_ALSA */
1213
1214 /**************************************************************************
1215  *                              wodMessage (WINEALSA.@)
1216  */
1217 DWORD WINAPI ALSA_wodMessage(WORD wDevID, WORD wMsg, DWORD dwUser,
1218                              DWORD dwParam1, DWORD dwParam2)
1219 {
1220     FIXME("(%u, %04X, %08X, %08X, %08X):stub\n", wDevID, wMsg, dwUser, dwParam1, dwParam2);
1221     return MMSYSERR_NOTENABLED;
1222 }
1223
1224 #endif /* HAVE_ALSA */