dlls/winealsa.drv/dsoutput.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 dsound output 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 "winerror.h"
  52 #include "winuser.h"
  53 #include "mmddk.h"
  54
  55 #include "alsa.h"
  56 #include "wine/library.h"
  57 #include "wine/unicode.h"
  58 #include "wine/debug.h"
  59
  60 #ifdef HAVE_ALSA
  61
  62 WINE_DEFAULT_DEBUG_CHANNEL(dsalsa);
  63
  64 typedef struct IDsDriverImpl IDsDriverImpl;
  65 typedef struct IDsDriverBufferImpl IDsDriverBufferImpl;
  66
  67 struct IDsDriverImpl
  68 {
  69     /* IUnknown fields */
  70     const IDsDriverVtbl *lpVtbl;
  71     LONG ref;
  72
  73     /* IDsDriverImpl fields */
  74     IDsDriverBufferImpl* primary;
  75     UINT wDevID;
  76 };
  77
  78 struct IDsDriverBufferImpl
  79 {
  80     const IDsDriverBufferVtbl *lpVtbl;
  81     LONG ref;
  82     IDsDriverImpl* drv;
  83
  84     CRITICAL_SECTION pcm_crst;
  85     LPVOID mmap_buffer;
  86     DWORD mmap_buflen_bytes;
  87
  88     snd_pcm_t *pcm;
  89     snd_pcm_hw_params_t *hw_params;
  90     snd_pcm_sw_params_t *sw_params;
  91     snd_pcm_uframes_t mmap_buflen_frames, mmap_pos, mmap_commitahead, mmap_writeahead;
  92 };
  93
  94 /** Fill buffers, for starting and stopping
  95  * Alsa won't start playing until everything is filled up
  96  * This also updates mmap_pos
  97  *
  98  * Returns: Amount of periods in use so snd_pcm_avail_update
  99  * doesn't have to be called up to 4x in GetPosition()
 100  */
 101 static snd_pcm_uframes_t CommitAll(IDsDriverBufferImpl *This)
 102 {
 103     const snd_pcm_channel_area_t *areas;
 104     snd_pcm_uframes_t used;
 105     const snd_pcm_uframes_t commitahead = This->mmap_commitahead;
 106
 107     used = This->mmap_buflen_frames - snd_pcm_avail_update(This->pcm);
 108     TRACE("%p needs to commit to %lu, used: %lu\n", This, commitahead, used);
 109     if (used < commitahead)
 110     {
 111         snd_pcm_uframes_t done, putin = commitahead - used;
 112         snd_pcm_mmap_begin(This->pcm, &areas, &This->mmap_pos, &putin);
 113         done = snd_pcm_mmap_commit(This->pcm, This->mmap_pos, putin);
 114         This->mmap_pos += done;
 115         used += done;
 116         putin = commitahead - used;
 117
 118         if (This->mmap_pos == This->mmap_buflen_frames && (snd_pcm_sframes_t)putin > 0)
 119         {
 120             snd_pcm_mmap_begin(This->pcm, &areas, &This->mmap_pos, &putin);
 121             done = snd_pcm_mmap_commit(This->pcm, This->mmap_pos, putin);
 122             This->mmap_pos += done;
 123             used += done;
 124         }
 125     }
 126
 127     if (This->mmap_pos == This->mmap_buflen_frames)
 128         This->mmap_pos = 0;
 129
 130     return used;
 131 }
 132
 133 static void CheckXRUN(IDsDriverBufferImpl* This)
 134 {
 135     snd_pcm_state_t state = snd_pcm_state(This->pcm);
 136     snd_pcm_sframes_t delay;
 137     int err;
 138
 139     snd_pcm_hwsync(This->pcm);
 140     snd_pcm_delay(This->pcm, &delay);
 141     if ( state == SND_PCM_STATE_XRUN )
 142     {
 143         err = snd_pcm_prepare(This->pcm);
 144         CommitAll(This);
 145         snd_pcm_start(This->pcm);
 146         WARN("xrun occurred\n");
 147         if ( err < 0 )
 148             ERR("recovery from xrun failed, prepare failed: %s\n", snd_strerror(err));
 149     }
 150     else if ( state == SND_PCM_STATE_SUSPENDED )
 151     {
 152         int err = snd_pcm_resume(This->pcm);
 153         TRACE("recovery from suspension occurred\n");
 154         if (err < 0 && err != -EAGAIN){
 155             err = snd_pcm_prepare(This->pcm);
 156             if (err < 0)
 157                 ERR("recovery from suspend failed, prepare failed: %s\n", snd_strerror(err));
 158         }
 159     } else if ( state != SND_PCM_STATE_RUNNING ) {
 160         WARN("Unhandled state: %d\n", state);
 161     }
 162 }
 163
 164 /**
 165  * Allocate the memory-mapped buffer for direct sound, and set up the
 166  * callback.
 167  */
 168 static int DSDB_CreateMMAP(IDsDriverBufferImpl* pdbi)
 169 {
 170     snd_pcm_t *pcm = pdbi->pcm;
 171     snd_pcm_format_t format;
 172     snd_pcm_uframes_t frames, ofs, avail, psize, boundary;
 173     unsigned int channels, bits_per_sample, bits_per_frame;
 174     int err, mmap_mode;
 175     const snd_pcm_channel_area_t *areas;
 176     snd_pcm_hw_params_t *hw_params = pdbi->hw_params;
 177     snd_pcm_sw_params_t *sw_params = pdbi->sw_params;
 178
 179     mmap_mode = snd_pcm_type(pcm);
 180
 181     if (mmap_mode == SND_PCM_TYPE_HW)
 182         TRACE("mmap'd buffer is a direct hardware buffer.\n");
 183     else if (mmap_mode == SND_PCM_TYPE_DMIX)
 184         TRACE("mmap'd buffer is an ALSA dmix buffer\n");
 185     else
 186         TRACE("mmap'd buffer is an ALSA type %d buffer\n", mmap_mode);
 187
 188     err = snd_pcm_hw_params_get_period_size(hw_params, &psize, NULL);
 189
 190     err = snd_pcm_hw_params_get_format(hw_params, &format);
 191     err = snd_pcm_hw_params_get_buffer_size(hw_params, &frames);
 192     err = snd_pcm_hw_params_get_channels(hw_params, &channels);
 193     bits_per_sample = snd_pcm_format_physical_width(format);
 194     bits_per_frame = bits_per_sample * channels;
 195
 196     if (TRACE_ON(dsalsa))
 197         ALSA_TraceParameters(hw_params, NULL, FALSE);
 198
 199     TRACE("format=%s  frames=%ld  channels=%d  bits_per_sample=%d  bits_per_frame=%d\n",
 200           snd_pcm_format_name(format), frames, channels, bits_per_sample, bits_per_frame);
 201
 202     pdbi->mmap_buflen_frames = frames;
 203     pdbi->mmap_buflen_bytes = snd_pcm_frames_to_bytes( pcm, frames );
 204
 205     snd_pcm_sw_params_current(pcm, sw_params);
 206     snd_pcm_sw_params_set_start_threshold(pcm, sw_params, 0);
 207     snd_pcm_sw_params_get_boundary(sw_params, &boundary);
 208     snd_pcm_sw_params_set_stop_threshold(pcm, sw_params, boundary);
 209     snd_pcm_sw_params_set_silence_threshold(pcm, sw_params, INT_MAX);
 210     snd_pcm_sw_params_set_silence_size(pcm, sw_params, 0);
 211     snd_pcm_sw_params_set_avail_min(pcm, sw_params, 0);
 212     snd_pcm_sw_params_set_xrun_mode(pcm, sw_params, SND_PCM_XRUN_NONE);
 213     err = snd_pcm_sw_params(pcm, sw_params);
 214
 215     avail = snd_pcm_avail_update(pcm);
 216     if (avail < 0)
 217     {
 218         ERR("No buffer is available: %s.\n", snd_strerror(avail));
 219         return DSERR_GENERIC;
 220     }
 221     err = snd_pcm_mmap_begin(pcm, &areas, &ofs, &avail);
 222     if ( err < 0 )
 223     {
 224         ERR("Can't map sound device for direct access: %s\n", snd_strerror(err));
 225         return DSERR_GENERIC;
 226     }
 227     err = snd_pcm_mmap_commit(pcm, ofs, avail);
 228     pdbi->mmap_buffer = areas->addr;
 229
 230     TRACE("created mmap buffer of %ld frames (%d bytes) at %p\n",
 231         frames, pdbi->mmap_buflen_bytes, pdbi->mmap_buffer);
 232
 233     return DS_OK;
 234 }
 235
 236 static HRESULT WINAPI IDsDriverBufferImpl_QueryInterface(PIDSDRIVERBUFFER iface, REFIID riid, LPVOID *ppobj)
 237 {
 238     /* IDsDriverBufferImpl *This = (IDsDriverBufferImpl *)iface; */
 239     FIXME("(): stub!\n");
 240     return DSERR_UNSUPPORTED;
 241 }
 242
 243 static ULONG WINAPI IDsDriverBufferImpl_AddRef(PIDSDRIVERBUFFER iface)
 244 {
 245     IDsDriverBufferImpl *This = (IDsDriverBufferImpl *)iface;
 246     ULONG refCount = InterlockedIncrement(&This->ref);
 247
 248     TRACE("(%p)->(ref before=%u)\n",This, refCount - 1);
 249
 250     return refCount;
 251 }
 252
 253 static ULONG WINAPI IDsDriverBufferImpl_Release(PIDSDRIVERBUFFER iface)
 254 {
 255     IDsDriverBufferImpl *This = (IDsDriverBufferImpl *)iface;
 256     ULONG refCount = InterlockedDecrement(&This->ref);
 257
 258     TRACE("(%p)->(ref before=%u)\n",This, refCount + 1);
 259
 260     if (refCount)
 261         return refCount;
 262
 263     TRACE("mmap buffer %p destroyed\n", This->mmap_buffer);
 264
 265     if (This == This->drv->primary)
 266         This->drv->primary = NULL;
 267
 268     This->pcm_crst.DebugInfo->Spare[0] = 0;
 269     DeleteCriticalSection(&This->pcm_crst);
 270
 271     snd_pcm_drop(This->pcm);
 272     snd_pcm_close(This->pcm);
 273     This->pcm = NULL;
 274     HeapFree(GetProcessHeap(), 0, This->sw_params);
 275     HeapFree(GetProcessHeap(), 0, This->hw_params);
 276     HeapFree(GetProcessHeap(), 0, This);
 277     return 0;
 278 }
 279
 280 static HRESULT WINAPI IDsDriverBufferImpl_Lock(PIDSDRIVERBUFFER iface,
 281                                                LPVOID*ppvAudio1,LPDWORD pdwLen1,
 282                                                LPVOID*ppvAudio2,LPDWORD pdwLen2,
 283                                                DWORD dwWritePosition,DWORD dwWriteLen,
 284                                                DWORD dwFlags)
 285 {
 286     FIXME("(%p) stub\n", iface);
 287     return DSERR_UNSUPPORTED;
 288 }
 289
 290 static HRESULT WINAPI IDsDriverBufferImpl_Unlock(PIDSDRIVERBUFFER iface,
 291                                                  LPVOID pvAudio1,DWORD dwLen1,
 292                                                  LPVOID pvAudio2,DWORD dwLen2)
 293 {
 294     FIXME("(%p) stub\n", iface);
 295     return DSERR_UNSUPPORTED;
 296 }
 297
 298 static int warnonce;
 299
 300 static HRESULT SetFormat(IDsDriverBufferImpl *This, LPWAVEFORMATEX pwfx, BOOL forced)
 301 {
 302     snd_pcm_t *pcm = NULL;
 303     snd_pcm_hw_params_t *hw_params = This->hw_params;
 304     unsigned int buffer_time = 500000;
 305     snd_pcm_format_t format = -1;
 306     snd_pcm_uframes_t psize;
 307     DWORD rate = pwfx->nSamplesPerSec;
 308     int err=0;
 309
 310     switch (pwfx->wBitsPerSample)
 311     {
 312         case  8: format = SND_PCM_FORMAT_U8; break;
 313         case 16: format = SND_PCM_FORMAT_S16_LE; break;
 314         case 24: format = SND_PCM_FORMAT_S24_LE; break;
 315         case 32: format = SND_PCM_FORMAT_S32_LE; break;
 316         default: FIXME("Unsupported bpp: %d\n", pwfx->wBitsPerSample); return DSERR_GENERIC;
 317     }
 318
 319     /* **** */
 320     EnterCriticalSection(&This->pcm_crst);
 321
 322     err = snd_pcm_open(&pcm, WOutDev[This->drv->wDevID].pcmname, SND_PCM_STREAM_PLAYBACK, SND_PCM_NONBLOCK);
 323
 324     if (err < 0)
 325     {
 326         if (errno != EBUSY || !This->pcm)
 327         {
 328             /* **** */
 329             LeaveCriticalSection(&This->pcm_crst);
 330             WARN("Can not open sound device: %s\n", snd_strerror(err));
 331             return DSERR_GENERIC;
 332         }
 333         snd_pcm_drop(This->pcm);
 334         snd_pcm_close(This->pcm);
 335         This->pcm = NULL;
 336         err = snd_pcm_open(&pcm, WOutDev[This->drv->wDevID].pcmname, SND_PCM_STREAM_PLAYBACK, SND_PCM_NONBLOCK);
 337         if (err < 0)
 338         {
 339             /* **** */
 340             LeaveCriticalSection(&This->pcm_crst);
 341             WARN("Can not open sound device: %s\n", snd_strerror(err));
 342             return DSERR_BUFFERLOST;
 343         }
 344     }
 345
 346     /* Set some defaults */
 347     snd_pcm_hw_params_any(pcm, hw_params);
 348     err = snd_pcm_hw_params_set_channels(pcm, hw_params, pwfx->nChannels);
 349     if (err < 0) { WARN("Could not set channels to %d\n", pwfx->nChannels); goto err; }
 350
 351     err = snd_pcm_hw_params_set_format(pcm, hw_params, format);
 352     if (err < 0) { WARN("Could not set format to %d bpp\n", pwfx->wBitsPerSample); goto err; }
 353
 354     /* Alsa's rate resampling is only used if the application specifically requests
 355      * a buffer at a certain frequency, else it is better to disable due to unwanted
 356      * side effects, which may include: Less granular pointer, changing buffer sizes, etc
 357      */
 358 #if SND_LIB_VERSION >= 0x010009
 359     snd_pcm_hw_params_set_rate_resample(pcm, hw_params, 0 && forced);
 360 #endif
 361
 362     err = snd_pcm_hw_params_set_rate_near(pcm, hw_params, &rate, NULL);
 363     if (err < 0) { rate = pwfx->nSamplesPerSec; WARN("Could not set rate\n"); goto err; }
 364
 365     if (!ALSA_NearMatch(rate, pwfx->nSamplesPerSec))
 366     {
 367         WARN("Could not set sound rate to %d, but instead to %d\n", pwfx->nSamplesPerSec, rate);
 368         pwfx->nSamplesPerSec = rate;
 369         pwfx->nAvgBytesPerSec = rate * pwfx->nBlockAlign;
 370         /* Let DirectSound detect this */
 371     }
 372
 373     snd_pcm_hw_params_set_periods_integer(pcm, hw_params);
 374     snd_pcm_hw_params_set_buffer_time_near(pcm, hw_params, &buffer_time, NULL);
 375     buffer_time = 10000;
 376     snd_pcm_hw_params_set_period_time_near(pcm, hw_params, &buffer_time, NULL);
 377     err = snd_pcm_hw_params(pcm, hw_params);
 378     err = snd_pcm_sw_params(pcm, This->sw_params);
 379     snd_pcm_prepare(pcm);
 380
 381     err = snd_pcm_hw_params_get_period_size(hw_params, &psize, NULL);
 382     TRACE("Period size is: %lu\n", psize);
 383
 384     /* If period size is 'high', try to commit less
 385      * dmix needs at least 2 buffers to work succesfully but prefers 3
 386      * however it seems to work ok if I just commit 2 1/2 buffers
 387      */
 388     if (psize >= 512)
 389     {
 390         if (psize > 512 && ++warnonce == 1)
 391             FIXME("Your alsa dmix period size is excessively high, unfortunately this is alsa default, try decreasing it to 512 or 256 (but double the amount of periods) if possible\n");
 392         This->mmap_commitahead = 2 * psize + psize/2;
 393         This->mmap_writeahead = 2 * psize;
 394     }
 395     else
 396     {
 397         This->mmap_commitahead = 3 * psize;
 398         while (This->mmap_commitahead <= 512)
 399             This->mmap_commitahead += psize;
 400         This->mmap_writeahead = This->mmap_commitahead;
 401     }
 402
 403     if (This->pcm)
 404     {
 405         snd_pcm_drop(This->pcm);
 406         snd_pcm_close(This->pcm);
 407     }
 408     This->pcm = pcm;
 409
 410     snd_pcm_prepare(This->pcm);
 411     DSDB_CreateMMAP(This);
 412
 413     /* **** */
 414     LeaveCriticalSection(&This->pcm_crst);
 415     return S_OK;
 416
 417     err:
 418     if (err < 0)
 419         WARN("Failed to apply changes: %s\n", snd_strerror(err));
 420
 421     if (!This->pcm)
 422         This->pcm = pcm;
 423     else
 424         snd_pcm_close(pcm);
 425
 426     if (This->pcm)
 427         snd_pcm_hw_params_current(This->pcm, This->hw_params);
 428
 429     /* **** */
 430     LeaveCriticalSection(&This->pcm_crst);
 431     return DSERR_BADFORMAT;
 432 }
 433
 434 static HRESULT WINAPI IDsDriverBufferImpl_SetFormat(PIDSDRIVERBUFFER iface, LPWAVEFORMATEX pwfx)
 435 {
 436     IDsDriverBufferImpl *This = (IDsDriverBufferImpl *)iface;
 437     HRESULT hr = S_OK;
 438
 439     TRACE("(%p, %p)\n", iface, pwfx);
 440
 441     hr = SetFormat(This, pwfx, TRUE);
 442
 443     if (hr == S_OK)
 444         /* Buffer size / Location changed, so tell dsound to recreate */
 445         return DSERR_BUFFERLOST;
 446     return hr;
 447 }
 448
 449 static HRESULT WINAPI IDsDriverBufferImpl_SetFrequency(PIDSDRIVERBUFFER iface, DWORD dwFreq)
 450 {
 451     /* IDsDriverBufferImpl *This = (IDsDriverBufferImpl *)iface; */
 452     FIXME("(%p,%d): stub\n",iface,dwFreq);
 453     return S_OK;
 454 }
 455
 456 static HRESULT WINAPI IDsDriverBufferImpl_SetVolumePan(PIDSDRIVERBUFFER iface, PDSVOLUMEPAN pVolPan)
 457 {
 458     IDsDriverBufferImpl *This = (IDsDriverBufferImpl *)iface;
 459     FIXME("(%p,%p): stub\n",This,pVolPan);
 460     /* TODO: Bring volume control back */
 461     return DS_OK;
 462 }
 463
 464 static HRESULT WINAPI IDsDriverBufferImpl_SetPosition(PIDSDRIVERBUFFER iface, DWORD dwNewPos)
 465 {
 466     /* IDsDriverBufferImpl *This = (IDsDriverBufferImpl *)iface; */
 467     /* I don't even think alsa allows this */
 468     FIXME("(%p,%d): stub\n",iface,dwNewPos);
 469     return DSERR_UNSUPPORTED;
 470 }
 471
 472 static HRESULT WINAPI IDsDriverBufferImpl_GetPosition(PIDSDRIVERBUFFER iface,
 473                                                       LPDWORD lpdwPlay, LPDWORD lpdwWrite)
 474 {
 475     IDsDriverBufferImpl *This = (IDsDriverBufferImpl *)iface;
 476     snd_pcm_uframes_t hw_pptr=0, hw_wptr=0;
 477     snd_pcm_state_t state;
 478
 479     EnterCriticalSection(&This->pcm_crst);
 480
 481     if (!This->pcm)
 482     {
 483         FIXME("Bad pointer for pcm: %p\n", This->pcm);
 484         LeaveCriticalSection(&This->pcm_crst);
 485         return DSERR_GENERIC;
 486     }
 487
 488     state = snd_pcm_state(This->pcm);
 489
 490     if (state != SND_PCM_STATE_RUNNING)
 491         CheckXRUN(This);
 492     else
 493     {
 494         snd_pcm_uframes_t used = CommitAll(This);
 495
 496         if (This->mmap_pos > used)
 497             hw_pptr = This->mmap_pos - used;
 498         else
 499             hw_pptr = This->mmap_buflen_frames - used + This->mmap_pos;
 500
 501         hw_wptr = hw_pptr + (This->mmap_writeahead > used ? used : This->mmap_writeahead);
 502         hw_wptr %= This->mmap_buflen_frames;
 503         hw_pptr %= This->mmap_buflen_frames;
 504
 505         TRACE("At position: %ld (%ld) - Used %ld\n", hw_pptr, This->mmap_pos, used);
 506     }
 507
 508     LeaveCriticalSection(&This->pcm_crst);
 509
 510     if (lpdwPlay)
 511         *lpdwPlay = snd_pcm_frames_to_bytes(This->pcm, hw_pptr);
 512     if (lpdwWrite)
 513         *lpdwWrite = snd_pcm_frames_to_bytes(This->pcm, hw_wptr);
 514
 515     TRACE("hw_pptr=0x%08x, hw_wptr=0x%08x playpos=%d, writepos=%d\n", (unsigned int)hw_pptr, (unsigned int)hw_wptr, lpdwPlay?*lpdwPlay:-1, lpdwWrite?*lpdwWrite:-1);
 516     return DS_OK;
 517 }
 518
 519 static HRESULT WINAPI IDsDriverBufferImpl_Play(PIDSDRIVERBUFFER iface, DWORD dwRes1, DWORD dwRes2, DWORD dwFlags)
 520 {
 521     IDsDriverBufferImpl *This = (IDsDriverBufferImpl *)iface;
 522     TRACE("(%p,%x,%x,%x)\n",iface,dwRes1,dwRes2,dwFlags);
 523
 524     /* **** */
 525     EnterCriticalSection(&This->pcm_crst);
 526     snd_pcm_start(This->pcm);
 527     CommitAll(This);
 528     /* **** */
 529     LeaveCriticalSection(&This->pcm_crst);
 530     return DS_OK;
 531 }
 532
 533 static HRESULT WINAPI IDsDriverBufferImpl_Stop(PIDSDRIVERBUFFER iface)
 534 {
 535     IDsDriverBufferImpl *This = (IDsDriverBufferImpl *)iface;
 536     TRACE("(%p)\n",iface);
 537
 538     /* **** */
 539     EnterCriticalSection(&This->pcm_crst);
 540     snd_pcm_drop(This->pcm);
 541     snd_pcm_prepare(This->pcm);
 542     /* **** */
 543     LeaveCriticalSection(&This->pcm_crst);
 544     return DS_OK;
 545 }
 546
 547 static const IDsDriverBufferVtbl dsdbvt =
 548 {
 549     IDsDriverBufferImpl_QueryInterface,
 550     IDsDriverBufferImpl_AddRef,
 551     IDsDriverBufferImpl_Release,
 552     IDsDriverBufferImpl_Lock,
 553     IDsDriverBufferImpl_Unlock,
 554     IDsDriverBufferImpl_SetFormat,
 555     IDsDriverBufferImpl_SetFrequency,
 556     IDsDriverBufferImpl_SetVolumePan,
 557     IDsDriverBufferImpl_SetPosition,
 558     IDsDriverBufferImpl_GetPosition,
 559     IDsDriverBufferImpl_Play,
 560     IDsDriverBufferImpl_Stop
 561 };
 562
 563 static HRESULT WINAPI IDsDriverImpl_QueryInterface(PIDSDRIVER iface, REFIID riid, LPVOID *ppobj)
 564 {
 565     /* IDsDriverImpl *This = (IDsDriverImpl *)iface; */
 566     FIXME("(%p): stub!\n",iface);
 567     return DSERR_UNSUPPORTED;
 568 }
 569
 570 static ULONG WINAPI IDsDriverImpl_AddRef(PIDSDRIVER iface)
 571 {
 572     IDsDriverImpl *This = (IDsDriverImpl *)iface;
 573     ULONG refCount = InterlockedIncrement(&This->ref);
 574
 575     TRACE("(%p)->(ref before=%u)\n",This, refCount - 1);
 576
 577     return refCount;
 578 }
 579
 580 static ULONG WINAPI IDsDriverImpl_Release(PIDSDRIVER iface)
 581 {
 582     IDsDriverImpl *This = (IDsDriverImpl *)iface;
 583     ULONG refCount = InterlockedDecrement(&This->ref);
 584
 585     TRACE("(%p)->(ref before=%u)\n",This, refCount + 1);
 586
 587     if (refCount)
 588         return refCount;
 589
 590     HeapFree(GetProcessHeap(), 0, This);
 591     return 0;
 592 }
 593
 594 static HRESULT WINAPI IDsDriverImpl_GetDriverDesc(PIDSDRIVER iface, PDSDRIVERDESC pDesc)
 595 {
 596     IDsDriverImpl *This = (IDsDriverImpl *)iface;
 597     TRACE("(%p,%p)\n",iface,pDesc);
 598     memcpy(pDesc, &(WOutDev[This->wDevID].ds_desc), sizeof(DSDRIVERDESC));
 599     pDesc->dwFlags              = DSDDESC_DONTNEEDPRIMARYLOCK | DSDDESC_DONTNEEDSECONDARYLOCK | DSDDESC_DONTNEEDWRITELEAD;
 600     pDesc->dnDevNode            = WOutDev[This->wDevID].waveDesc.dnDevNode;
 601     pDesc->wVxdId               = 0;
 602     pDesc->wReserved            = 0;
 603     pDesc->ulDeviceNum          = This->wDevID;
 604     pDesc->dwHeapType           = DSDHEAP_NOHEAP;
 605     pDesc->pvDirectDrawHeap     = NULL;
 606     pDesc->dwMemStartAddress    = 0xDEAD0000;
 607     pDesc->dwMemEndAddress      = 0xDEAF0000;
 608     pDesc->dwMemAllocExtra      = 0;
 609     pDesc->pvReserved1          = NULL;
 610     pDesc->pvReserved2          = NULL;
 611     return DS_OK;
 612 }
 613
 614 static HRESULT WINAPI IDsDriverImpl_Open(PIDSDRIVER iface)
 615 {
 616     HRESULT hr = S_OK;
 617     IDsDriverImpl *This = (IDsDriverImpl *)iface;
 618     int err=0;
 619     snd_pcm_t *pcm = NULL;
 620     snd_pcm_hw_params_t *hw_params;
 621
 622     /* While this is not really needed, it is a good idea to do this,
 623      * to see if sound can be initialized */
 624
 625     hw_params = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, snd_pcm_hw_params_sizeof());
 626
 627     if (!hw_params)
 628     {
 629         hr = DSERR_OUTOFMEMORY;
 630         goto unalloc;
 631     }
 632
 633     err = snd_pcm_open(&pcm, WOutDev[This->wDevID].pcmname, SND_PCM_STREAM_PLAYBACK, SND_PCM_NONBLOCK);
 634     if (err < 0) goto err;
 635     err = snd_pcm_hw_params_any(pcm, hw_params);
 636     if (err < 0) goto err;
 637     err = snd_pcm_hw_params_set_access (pcm, hw_params, SND_PCM_ACCESS_MMAP_INTERLEAVED);
 638     if (err < 0) goto err;
 639
 640     TRACE("Success\n");
 641     snd_pcm_close(pcm);
 642     goto unalloc;
 643
 644     err:
 645     hr = DSERR_GENERIC;
 646     FIXME("Failed to open device: %s\n", snd_strerror(err));
 647     if (pcm)
 648         snd_pcm_close(pcm);
 649     unalloc:
 650     HeapFree(GetProcessHeap(), 0, hw_params);
 651     if (hr != S_OK)
 652         WARN("--> %08x\n", hr);
 653     return hr;
 654 }
 655
 656 static HRESULT WINAPI IDsDriverImpl_Close(PIDSDRIVER iface)
 657 {
 658     IDsDriverImpl *This = (IDsDriverImpl *)iface;
 659     TRACE("(%p) stub, harmless\n",This);
 660     return DS_OK;
 661 }
 662
 663 static HRESULT WINAPI IDsDriverImpl_GetCaps(PIDSDRIVER iface, PDSDRIVERCAPS pCaps)
 664 {
 665     IDsDriverImpl *This = (IDsDriverImpl *)iface;
 666     TRACE("(%p,%p)\n",iface,pCaps);
 667     memcpy(pCaps, &(WOutDev[This->wDevID].ds_caps), sizeof(DSDRIVERCAPS));
 668     return DS_OK;
 669 }
 670
 671 static HRESULT WINAPI IDsDriverImpl_CreateSoundBuffer(PIDSDRIVER iface,
 672                                                       LPWAVEFORMATEX pwfx,
 673                                                       DWORD dwFlags, DWORD dwCardAddress,
 674                                                       LPDWORD pdwcbBufferSize,
 675                                                       LPBYTE *ppbBuffer,
 676                                                       LPVOID *ppvObj)
 677 {
 678     IDsDriverImpl *This = (IDsDriverImpl *)iface;
 679     IDsDriverBufferImpl** ippdsdb = (IDsDriverBufferImpl**)ppvObj;
 680     HRESULT err;
 681
 682     TRACE("(%p,%p,%x,%x)\n",iface,pwfx,dwFlags,dwCardAddress);
 683     /* we only support primary buffers... for now */
 684     if (!(dwFlags & DSBCAPS_PRIMARYBUFFER))
 685         return DSERR_UNSUPPORTED;
 686     if (This->primary)
 687         return DSERR_ALLOCATED;
 688
 689     *ippdsdb = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(IDsDriverBufferImpl));
 690     if (*ippdsdb == NULL)
 691         return DSERR_OUTOFMEMORY;
 692
 693     (*ippdsdb)->hw_params = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, snd_pcm_hw_params_sizeof());
 694     (*ippdsdb)->sw_params = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, snd_pcm_sw_params_sizeof());
 695     if (!(*ippdsdb)->hw_params || !(*ippdsdb)->sw_params)
 696     {
 697         HeapFree(GetProcessHeap(), 0, (*ippdsdb)->sw_params);
 698         HeapFree(GetProcessHeap(), 0, (*ippdsdb)->hw_params);
 699         return DSERR_OUTOFMEMORY;
 700     }
 701     (*ippdsdb)->lpVtbl  = &dsdbvt;
 702     (*ippdsdb)->ref     = 1;
 703     (*ippdsdb)->drv     = This;
 704     InitializeCriticalSection(&(*ippdsdb)->pcm_crst);
 705     (*ippdsdb)->pcm_crst.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": ALSA_DSOUTPUT.pcm_crst");
 706
 707     /* SetFormat has to re-initialize pcm here anyway */
 708     err = SetFormat(*ippdsdb, pwfx, FALSE);
 709     if (FAILED(err))
 710     {
 711         WARN("Error occured: %08x\n", err);
 712         goto err;
 713     }
 714
 715     if (dwFlags & DSBCAPS_PRIMARYBUFFER)
 716         This->primary = *ippdsdb;
 717
 718     *pdwcbBufferSize = (*ippdsdb)->mmap_buflen_bytes;
 719     *ppbBuffer = (*ippdsdb)->mmap_buffer;
 720
 721     /* buffer is ready to go */
 722     TRACE("buffer created at %p\n", *ippdsdb);
 723     return err;
 724
 725     err:
 726     HeapFree(GetProcessHeap(), 0, (*ippdsdb)->sw_params);
 727     HeapFree(GetProcessHeap(), 0, (*ippdsdb)->hw_params);
 728     HeapFree(GetProcessHeap(), 0, *ippdsdb);
 729     *ippdsdb = NULL;
 730     return err;
 731 }
 732
 733 static HRESULT WINAPI IDsDriverImpl_DuplicateSoundBuffer(PIDSDRIVER iface,
 734                                                          PIDSDRIVERBUFFER pBuffer,
 735                                                          LPVOID *ppvObj)
 736 {
 737     IDsDriverImpl *This = (IDsDriverImpl *)iface;
 738     FIXME("(%p,%p): stub\n",This,pBuffer);
 739     return DSERR_INVALIDCALL;
 740 }
 741
 742 static const IDsDriverVtbl dsdvt =
 743 {
 744     IDsDriverImpl_QueryInterface,
 745     IDsDriverImpl_AddRef,
 746     IDsDriverImpl_Release,
 747     IDsDriverImpl_GetDriverDesc,
 748     IDsDriverImpl_Open,
 749     IDsDriverImpl_Close,
 750     IDsDriverImpl_GetCaps,
 751     IDsDriverImpl_CreateSoundBuffer,
 752     IDsDriverImpl_DuplicateSoundBuffer
 753 };
 754
 755 DWORD wodDsCreate(UINT wDevID, PIDSDRIVER* drv)
 756 {
 757     IDsDriverImpl** idrv = (IDsDriverImpl**)drv;
 758
 759     TRACE("driver created\n");
 760
 761     /* the HAL isn't much better than the HEL if we can't do mmap() */
 762     if (!(WOutDev[wDevID].outcaps.dwSupport & WAVECAPS_DIRECTSOUND))
 763     {
 764         WARN("MMAP not supported for this device, falling back to waveout, should be harmless\n");
 765         return MMSYSERR_NOTSUPPORTED;
 766     }
 767
 768     *idrv = HeapAlloc(GetProcessHeap(),0,sizeof(IDsDriverImpl));
 769     if (!*idrv)
 770         return MMSYSERR_NOMEM;
 771     (*idrv)->lpVtbl     = &dsdvt;
 772     (*idrv)->ref        = 1;
 773
 774     (*idrv)->wDevID     = wDevID;
 775     (*idrv)->primary    = NULL;
 776     return MMSYSERR_NOERROR;
 777 }
 778
 779 DWORD wodDsDesc(UINT wDevID, PDSDRIVERDESC desc)
 780 {
 781     memcpy(desc, &(WOutDev[wDevID].ds_desc), sizeof(DSDRIVERDESC));
 782     return MMSYSERR_NOERROR;
 783 }
 784
 785 #endif /* HAVE_ALSA */