dlls/winealsa.drv/dscapture.c

   1 /*
   2  * Sample Wine Driver for Advanced Linux Sound System (ALSA)
   3  *      Based on version <final> of the ALSA API
   4  *
   5  * Copyright 2007 - Maarten Lankhorst
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  */
  21
  22 /*======================================================================*
  23  *              Low level dsound input implementation                   *
  24  *======================================================================*/
  25
  26 #include "config.h"
  27 #include "wine/port.h"
  28
  29 #include <stdlib.h>
  30 #include <stdarg.h>
  31 #include <stdio.h>
  32 #include <string.h>
  33 #ifdef HAVE_UNISTD_H
  34 # include <unistd.h>
  35 #endif
  36 #include <errno.h>
  37 #include <limits.h>
  38 #include <fcntl.h>
  39 #ifdef HAVE_SYS_IOCTL_H
  40 # include <sys/ioctl.h>
  41 #endif
  42 #ifdef HAVE_SYS_MMAN_H
  43 # include <sys/mman.h>
  44 #endif
  45 #include "windef.h"
  46 #include "winbase.h"
  47 #include "wingdi.h"
  48 #include "winerror.h"
  49 #include "winuser.h"
  50 #include "mmddk.h"
  51
  52 #include "alsa.h"
  53 #include "wine/library.h"
  54 #include "wine/unicode.h"
  55 #include "wine/debug.h"
  56
  57 #ifdef HAVE_ALSA
  58
  59 WINE_DEFAULT_DEBUG_CHANNEL(dsalsa);
  60
  61 typedef struct IDsCaptureDriverImpl IDsCaptureDriverImpl;
  62 typedef struct IDsCaptureDriverBufferImpl IDsCaptureDriverBufferImpl;
  63
  64 struct IDsCaptureDriverImpl
  65 {
  66     /* IUnknown fields */
  67     const IDsCaptureDriverVtbl *lpVtbl;
  68     LONG ref;
  69
  70     /* IDsCaptureDriverImpl fields */
  71     IDsCaptureDriverBufferImpl* capture_buffer;
  72     UINT wDevID;
  73 };
  74
  75 struct IDsCaptureDriverBufferImpl
  76 {
  77     const IDsCaptureDriverBufferVtbl *lpVtbl;
  78     LONG ref;
  79     IDsCaptureDriverImpl* drv;
  80
  81     CRITICAL_SECTION pcm_crst;
  82     LPBYTE mmap_buffer, presented_buffer;
  83     DWORD mmap_buflen_bytes, play_looping, mmap_ofs_bytes;
  84
  85     /* Note: snd_pcm_frames_to_bytes(This->pcm, mmap_buflen_frames) != mmap_buflen_bytes */
  86     /* The actual buffer may differ in size from the wanted buffer size */
  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;
  92 };
  93
  94 #if 0
  95 /** Convert the position an application sees into a position ALSA sees */
  96 static snd_pcm_uframes_t fakepos_to_realpos(const IDsCaptureDriverBufferImpl* This, DWORD fakepos)
  97 {
  98     snd_pcm_uframes_t realpos;
  99     if (fakepos < This->mmap_ofs_bytes)
 100         realpos = This->mmap_buflen_bytes + fakepos - This->mmap_ofs_bytes;
 101     else realpos = fakepos - This->mmap_ofs_bytes;
 102     return snd_pcm_bytes_to_frames(This->pcm, realpos) % This->mmap_buflen_frames;
 103 }
 104 #endif
 105
 106 /** Convert the position ALSA sees into a position an application sees */
 107 static DWORD realpos_to_fakepos(const IDsCaptureDriverBufferImpl* This, snd_pcm_uframes_t realpos)
 108 {
 109     DWORD realposb = snd_pcm_frames_to_bytes(This->pcm, realpos);
 110     return (realposb + This->mmap_ofs_bytes) % This->mmap_buflen_bytes;
 111 }
 112
 113 /** Raw copy data, with buffer wrap around */
 114 static void CopyDataWrap(const IDsCaptureDriverBufferImpl* This, LPBYTE dest, DWORD fromwhere, DWORD copylen, DWORD buflen)
 115 {
 116     DWORD remainder = buflen - fromwhere;
 117     if (remainder >= copylen)
 118     {
 119         CopyMemory(dest, This->mmap_buffer + fromwhere, copylen);
 120     }
 121     else
 122     {
 123         CopyMemory(dest, This->mmap_buffer + fromwhere, remainder);
 124         copylen -= remainder;
 125         CopyMemory(dest, This->mmap_buffer, copylen);
 126     }
 127 }
 128
 129 /** Copy data from the mmap buffer to backbuffer, taking into account all wraparounds that may occur */
 130 static void CopyData(const IDsCaptureDriverBufferImpl* This, snd_pcm_uframes_t fromwhere, snd_pcm_uframes_t len)
 131 {
 132     DWORD dlen = snd_pcm_frames_to_bytes(This->pcm, len) % This->mmap_buflen_bytes;
 133
 134     /* Backbuffer */
 135     DWORD ofs = realpos_to_fakepos(This, fromwhere);
 136     DWORD remainder = This->mmap_buflen_bytes - ofs;
 137
 138     /* MMAP buffer */
 139     DWORD realbuflen = snd_pcm_frames_to_bytes(This->pcm, This->mmap_buflen_frames);
 140     DWORD realofs = snd_pcm_frames_to_bytes(This->pcm, fromwhere);
 141
 142     if (remainder >= dlen)
 143     {
 144        CopyDataWrap(This, This->presented_buffer + ofs, realofs, dlen, realbuflen);
 145     }
 146     else
 147     {
 148        CopyDataWrap(This, This->presented_buffer + ofs, realofs, remainder, realbuflen);
 149        dlen -= remainder;
 150        CopyDataWrap(This, This->presented_buffer, (realofs+remainder)%realbuflen, dlen, realbuflen);
 151     }
 152 }
 153
 154 /** Fill buffers, for starting and stopping
 155  * Alsa won't start playing until everything is filled up
 156  * This also updates mmap_pos
 157  *
 158  * Returns: Amount of periods in use so snd_pcm_avail_update
 159  * doesn't have to be called up to 4x in GetPosition()
 160  */
 161 static snd_pcm_uframes_t CommitAll(IDsCaptureDriverBufferImpl *This, DWORD forced)
 162 {
 163     const snd_pcm_channel_area_t *areas;
 164     snd_pcm_uframes_t used;
 165     const snd_pcm_uframes_t commitahead = This->mmap_buflen_frames;
 166
 167     used = This->mmap_buflen_frames - snd_pcm_avail_update(This->pcm);
 168     TRACE("%p needs to commit to %lu, used: %lu\n", This, commitahead, used);
 169     if (used < commitahead && (forced || This->play_looping))
 170     {
 171         snd_pcm_uframes_t done, putin = commitahead - used;
 172         snd_pcm_mmap_begin(This->pcm, &areas, &This->mmap_pos, &putin);
 173         CopyData(This, This->mmap_pos, putin);
 174         done = snd_pcm_mmap_commit(This->pcm, This->mmap_pos, putin);
 175         This->mmap_pos += done;
 176         used += done;
 177         putin = commitahead - used;
 178
 179         if (This->mmap_pos == This->mmap_buflen_frames && (snd_pcm_sframes_t)putin > 0 && This->play_looping)
 180         {
 181             snd_pcm_mmap_begin(This->pcm, &areas, &This->mmap_pos, &putin);
 182             This->mmap_ofs_bytes += snd_pcm_frames_to_bytes(This->pcm, This->mmap_buflen_frames);
 183             This->mmap_ofs_bytes %= This->mmap_buflen_bytes;
 184             CopyData(This, This->mmap_pos, putin);
 185             done = snd_pcm_mmap_commit(This->pcm, This->mmap_pos, putin);
 186             This->mmap_pos += done;
 187             used += done;
 188         }
 189     }
 190
 191     if (This->mmap_pos == This->mmap_buflen_frames)
 192     {
 193         This->mmap_ofs_bytes += snd_pcm_frames_to_bytes(This->pcm, This->mmap_buflen_frames);
 194         This->mmap_ofs_bytes %= This->mmap_buflen_bytes;
 195         This->mmap_pos = 0;
 196     }
 197
 198     return used;
 199 }
 200
 201 static void CheckXRUN(IDsCaptureDriverBufferImpl* This)
 202 {
 203     snd_pcm_state_t state = snd_pcm_state(This->pcm);
 204     snd_pcm_sframes_t delay;
 205     int err;
 206
 207     snd_pcm_hwsync(This->pcm);
 208     snd_pcm_delay(This->pcm, &delay);
 209     if ( state == SND_PCM_STATE_XRUN )
 210     {
 211         err = snd_pcm_prepare(This->pcm);
 212         CommitAll(This, FALSE);
 213         snd_pcm_start(This->pcm);
 214         WARN("xrun occurred\n");
 215         if ( err < 0 )
 216             ERR("recovery from xrun failed, prepare failed: %s\n", snd_strerror(err));
 217     }
 218     else if ( state == SND_PCM_STATE_SUSPENDED )
 219     {
 220         int err = snd_pcm_resume(This->pcm);
 221         TRACE("recovery from suspension occurred\n");
 222         if (err < 0 && err != -EAGAIN){
 223             err = snd_pcm_prepare(This->pcm);
 224             if (err < 0)
 225                 ERR("recovery from suspend failed, prepare failed: %s\n", snd_strerror(err));
 226         }
 227     }
 228     else if ( state != SND_PCM_STATE_RUNNING)
 229     {
 230         WARN("Unhandled state: %d\n", state);
 231     }
 232 }
 233
 234 /**
 235  * Allocate the memory-mapped buffer for direct sound, and set up the
 236  * callback.
 237  */
 238 static int CreateMMAP(IDsCaptureDriverBufferImpl* pdbi)
 239 {
 240     snd_pcm_t *pcm = pdbi->pcm;
 241     snd_pcm_format_t format;
 242     snd_pcm_uframes_t frames, ofs, avail, psize, boundary;
 243     unsigned int channels, bits_per_sample, bits_per_frame;
 244     int err, mmap_mode;
 245     const snd_pcm_channel_area_t *areas;
 246     snd_pcm_hw_params_t *hw_params = pdbi->hw_params;
 247     snd_pcm_sw_params_t *sw_params = pdbi->sw_params;
 248
 249     mmap_mode = snd_pcm_type(pcm);
 250
 251     if (mmap_mode == SND_PCM_TYPE_HW)
 252         TRACE("mmap'd buffer is a direct hardware buffer.\n");
 253     else if (mmap_mode == SND_PCM_TYPE_DMIX)
 254         TRACE("mmap'd buffer is an ALSA dmix buffer\n");
 255     else
 256         TRACE("mmap'd buffer is an ALSA type %d buffer\n", mmap_mode);
 257
 258     err = snd_pcm_hw_params_get_period_size(hw_params, &psize, NULL);
 259     err = snd_pcm_hw_params_get_format(hw_params, &format);
 260     err = snd_pcm_hw_params_get_buffer_size(hw_params, &frames);
 261     err = snd_pcm_hw_params_get_channels(hw_params, &channels);
 262     bits_per_sample = snd_pcm_format_physical_width(format);
 263     bits_per_frame = bits_per_sample * channels;
 264
 265     if (TRACE_ON(dsalsa))
 266         ALSA_TraceParameters(hw_params, NULL, FALSE);
 267
 268     TRACE("format=%s  frames=%ld  channels=%d  bits_per_sample=%d  bits_per_frame=%d\n",
 269           snd_pcm_format_name(format), frames, channels, bits_per_sample, bits_per_frame);
 270
 271     pdbi->mmap_buflen_frames = frames;
 272     snd_pcm_sw_params_current(pcm, sw_params);
 273     snd_pcm_sw_params_set_start_threshold(pcm, sw_params, 0);
 274     snd_pcm_sw_params_get_boundary(sw_params, &boundary);
 275     snd_pcm_sw_params_set_stop_threshold(pcm, sw_params, boundary);
 276     snd_pcm_sw_params_set_silence_threshold(pcm, sw_params, INT_MAX);
 277     snd_pcm_sw_params_set_silence_size(pcm, sw_params, 0);
 278     snd_pcm_sw_params_set_avail_min(pcm, sw_params, 0);
 279     snd_pcm_sw_params_set_xrun_mode(pcm, sw_params, SND_PCM_XRUN_NONE);
 280     err = snd_pcm_sw_params(pcm, sw_params);
 281
 282     avail = snd_pcm_avail_update(pcm);
 283     if (avail < 0)
 284     {
 285         ERR("No buffer is available: %s.\n", snd_strerror(avail));
 286         return DSERR_GENERIC;
 287     }
 288     err = snd_pcm_mmap_begin(pcm, &areas, &ofs, &avail);
 289     if ( err < 0 )
 290     {
 291         ERR("Can't map sound device for direct access: %s\n", snd_strerror(err));
 292         return DSERR_GENERIC;
 293     }
 294     err = snd_pcm_mmap_commit(pcm, ofs, 0);
 295     pdbi->mmap_buffer = areas->addr;
 296
 297     TRACE("created mmap buffer of %ld frames (%d bytes) at %p\n",
 298         frames, pdbi->mmap_buflen_bytes, pdbi->mmap_buffer);
 299
 300     return DS_OK;
 301 }
 302
 303 static HRESULT WINAPI IDsCaptureDriverBufferImpl_QueryInterface(PIDSCDRIVERBUFFER iface, REFIID riid, LPVOID *ppobj)
 304 {
 305     /* IDsCaptureDriverBufferImpl *This = (IDsCaptureDriverBufferImpl *)iface; */
 306     FIXME("(): stub!\n");
 307     return DSERR_UNSUPPORTED;
 308 }
 309
 310 static ULONG WINAPI IDsCaptureDriverBufferImpl_AddRef(PIDSCDRIVERBUFFER iface)
 311 {
 312     IDsCaptureDriverBufferImpl *This = (IDsCaptureDriverBufferImpl *)iface;
 313     ULONG refCount = InterlockedIncrement(&This->ref);
 314
 315     TRACE("(%p)->(ref before=%u)\n",This, refCount - 1);
 316
 317     return refCount;
 318 }
 319
 320 static ULONG WINAPI IDsCaptureDriverBufferImpl_Release(PIDSCDRIVERBUFFER iface)
 321 {
 322     IDsCaptureDriverBufferImpl *This = (IDsCaptureDriverBufferImpl *)iface;
 323     ULONG refCount = InterlockedDecrement(&This->ref);
 324
 325     TRACE("(%p)->(ref before=%u)\n",This, refCount + 1);
 326
 327     if (refCount)
 328         return refCount;
 329
 330     TRACE("mmap buffer %p destroyed\n", This->mmap_buffer);
 331
 332     This->drv->capture_buffer = NULL;
 333     This->pcm_crst.DebugInfo->Spare[0] = 0;
 334     DeleteCriticalSection(&This->pcm_crst);
 335
 336     snd_pcm_drop(This->pcm);
 337     snd_pcm_close(This->pcm);
 338     This->pcm = NULL;
 339     HeapFree(GetProcessHeap(), 0, This->presented_buffer);
 340     HeapFree(GetProcessHeap(), 0, This->sw_params);
 341     HeapFree(GetProcessHeap(), 0, This->hw_params);
 342     HeapFree(GetProcessHeap(), 0, This);
 343     return 0;
 344 }
 345
 346 static HRESULT WINAPI IDsCaptureDriverBufferImpl_Lock(PIDSCDRIVERBUFFER iface, LPVOID*ppvAudio1,LPDWORD pdwLen1,LPVOID*ppvAudio2,LPDWORD pdwLen2, DWORD dwWritePosition,DWORD dwWriteLen, DWORD dwFlags)
 347 {
 348     IDsCaptureDriverBufferImpl *This = (IDsCaptureDriverBufferImpl *)iface;
 349     TRACE("(%p,%p,%p,%p,%p,%d,%d,0x%08x)\n", This, ppvAudio1, pdwLen1, ppvAudio2, pdwLen2, dwWritePosition, dwWriteLen, dwFlags);
 350
 351     if (ppvAudio1)
 352         *ppvAudio1 = (LPBYTE)This->presented_buffer + dwWritePosition;
 353
 354     if (dwWritePosition + dwWriteLen < This->mmap_buflen_bytes) {
 355         if (pdwLen1)
 356             *pdwLen1 = dwWriteLen;
 357         if (ppvAudio2)
 358             *ppvAudio2 = 0;
 359         if (pdwLen2)
 360             *pdwLen2 = 0;
 361     } else {
 362         if (pdwLen1)
 363             *pdwLen1 = This->mmap_buflen_bytes - dwWritePosition;
 364         if (ppvAudio2)
 365             *ppvAudio2 = This->presented_buffer;
 366         if (pdwLen2)
 367             *pdwLen2 = dwWriteLen - (This->mmap_buflen_bytes - dwWritePosition);
 368     }
 369     return DS_OK;
 370 }
 371
 372 static HRESULT WINAPI IDsCaptureDriverBufferImpl_Unlock(PIDSCDRIVERBUFFER iface, LPVOID pvAudio1,DWORD dwLen1, LPVOID pvAudio2,DWORD dwLen2)
 373 {
 374     IDsCaptureDriverBufferImpl *This = (IDsCaptureDriverBufferImpl *)iface;
 375     TRACE("(%p,%p,%d,%p,%d)\n",This,pvAudio1,dwLen1,pvAudio2,dwLen2);
 376     return DS_OK;
 377 }
 378
 379 static HRESULT WINAPI IDsCaptureDriverBufferImpl_SetFormat(PIDSCDRIVERBUFFER iface, LPWAVEFORMATEX pwfx)
 380 {
 381     IDsCaptureDriverBufferImpl *This = (IDsCaptureDriverBufferImpl *)iface;
 382     WINE_WAVEDEV *wwi = &WInDev[This->drv->wDevID];
 383     snd_pcm_t *pcm = NULL;
 384     snd_pcm_hw_params_t *hw_params = This->hw_params;
 385     snd_pcm_format_t format = -1;
 386     snd_pcm_uframes_t buffer_size;
 387     DWORD rate = pwfx->nSamplesPerSec;
 388     int err=0;
 389
 390     TRACE("(%p, %p)\n", iface, pwfx);
 391
 392     switch (pwfx->wBitsPerSample)
 393     {
 394         case  8: format = SND_PCM_FORMAT_U8; break;
 395         case 16: format = SND_PCM_FORMAT_S16_LE; break;
 396         case 24: format = SND_PCM_FORMAT_S24_LE; break;
 397         case 32: format = SND_PCM_FORMAT_S32_LE; break;
 398         default: FIXME("Unsupported bpp: %d\n", pwfx->wBitsPerSample); return DSERR_GENERIC;
 399     }
 400
 401     /* **** */
 402     EnterCriticalSection(&This->pcm_crst);
 403
 404     err = snd_pcm_open(&pcm, wwi->pcmname, SND_PCM_STREAM_CAPTURE, SND_PCM_NONBLOCK);
 405
 406     if (err < 0)
 407     {
 408         if (errno != EBUSY || !This->pcm)
 409         {
 410             /* **** */
 411             LeaveCriticalSection(&This->pcm_crst);
 412             WARN("Cannot open sound device: %s\n", snd_strerror(err));
 413             return DSERR_GENERIC;
 414         }
 415         snd_pcm_drop(This->pcm);
 416         snd_pcm_close(This->pcm);
 417         This->pcm = NULL;
 418         err = snd_pcm_open(&pcm, wwi->pcmname, SND_PCM_STREAM_CAPTURE, SND_PCM_NONBLOCK);
 419         if (err < 0)
 420         {
 421             /* **** */
 422             LeaveCriticalSection(&This->pcm_crst);
 423             WARN("Cannot open sound device: %s\n", snd_strerror(err));
 424             return DSERR_BUFFERLOST;
 425         }
 426     }
 427
 428     /* Set some defaults */
 429     snd_pcm_hw_params_any(pcm, hw_params);
 430     err = snd_pcm_hw_params_set_channels(pcm, hw_params, pwfx->nChannels);
 431     if (err < 0) { WARN("Could not set channels to %d\n", pwfx->nChannels); goto err; }
 432
 433     err = snd_pcm_hw_params_set_format(pcm, hw_params, format);
 434     if (err < 0) { WARN("Could not set format to %d bpp\n", pwfx->wBitsPerSample); goto err; }
 435
 436     err = snd_pcm_hw_params_set_rate_near(pcm, hw_params, &rate, NULL);
 437     if (err < 0) { rate = pwfx->nSamplesPerSec; WARN("Could not set rate\n"); goto err; }
 438
 439     if (!ALSA_NearMatch(rate, pwfx->nSamplesPerSec))
 440     {
 441         WARN("Could not set sound rate to %d, but instead to %d\n", pwfx->nSamplesPerSec, rate);
 442         pwfx->nSamplesPerSec = rate;
 443         pwfx->nAvgBytesPerSec = rate * pwfx->nBlockAlign;
 444         /* Let DirectSound detect this */
 445     }
 446
 447     snd_pcm_hw_params_set_periods_integer(pcm, hw_params);
 448     buffer_size = snd_pcm_bytes_to_frames(pcm, This->mmap_buflen_bytes);
 449     snd_pcm_hw_params_set_buffer_size_near(pcm, hw_params, &buffer_size);
 450     buffer_size = 5000;
 451     snd_pcm_hw_params_set_period_time_near(pcm, hw_params, (unsigned int*)&buffer_size, NULL);
 452     err = snd_pcm_hw_params(pcm, hw_params);
 453     err = snd_pcm_sw_params(pcm, This->sw_params);
 454     snd_pcm_prepare(pcm);
 455
 456     if (This->pcm)
 457     {
 458         snd_pcm_drop(This->pcm);
 459         snd_pcm_close(This->pcm);
 460     }
 461     This->pcm = pcm;
 462
 463     snd_pcm_prepare(This->pcm);
 464     CreateMMAP(This);
 465
 466     /* **** */
 467     LeaveCriticalSection(&This->pcm_crst);
 468     return S_OK;
 469
 470     err:
 471     if (err < 0)
 472         WARN("Failed to apply changes: %s\n", snd_strerror(err));
 473
 474     if (!This->pcm)
 475         This->pcm = pcm;
 476     else
 477         snd_pcm_close(pcm);
 478
 479     if (This->pcm)
 480         snd_pcm_hw_params_current(This->pcm, This->hw_params);
 481
 482     /* **** */
 483     LeaveCriticalSection(&This->pcm_crst);
 484     return DSERR_BADFORMAT;
 485 }
 486
 487 static HRESULT WINAPI IDsCaptureDriverBufferImpl_GetPosition(PIDSCDRIVERBUFFER iface, LPDWORD lpdwCappos, LPDWORD lpdwReadpos)
 488 {
 489     IDsCaptureDriverBufferImpl *This = (IDsCaptureDriverBufferImpl *)iface;
 490     snd_pcm_uframes_t hw_pptr, hw_wptr;
 491
 492     EnterCriticalSection(&This->pcm_crst);
 493
 494     if (!This->pcm)
 495     {
 496         FIXME("Bad pointer for pcm: %p\n", This->pcm);
 497         LeaveCriticalSection(&This->pcm_crst);
 498         return DSERR_GENERIC;
 499     }
 500
 501     if (snd_pcm_state(This->pcm) != SND_PCM_STATE_RUNNING)
 502     {
 503         hw_pptr = This->mmap_pos;
 504         CheckXRUN(This);
 505     }
 506     else
 507     {
 508         /* FIXME: Unused at the moment */
 509         snd_pcm_uframes_t used = CommitAll(This, FALSE);
 510
 511         if (This->mmap_pos > used)
 512             hw_pptr = This->mmap_pos - used;
 513         else
 514             hw_pptr = This->mmap_buflen_frames - used + This->mmap_pos;
 515     }
 516     hw_wptr = This->mmap_pos;
 517
 518     if (lpdwCappos)
 519         *lpdwCappos = realpos_to_fakepos(This, hw_wptr);
 520     if (lpdwReadpos)
 521         *lpdwReadpos = realpos_to_fakepos(This, hw_wptr);
 522
 523     LeaveCriticalSection(&This->pcm_crst);
 524
 525     TRACE("hw_pptr=0x%08x, hw_wptr=0x%08x playpos=%d, writepos=%d\n", (unsigned int)hw_pptr, (unsigned int)hw_wptr, lpdwCappos?*lpdwCappos:-1, lpdwReadpos?*lpdwReadpos:-1);
 526     return DS_OK;
 527 }
 528
 529 static HRESULT WINAPI IDsCaptureDriverBufferImpl_GetStatus(PIDSCDRIVERBUFFER iface, LPDWORD lpdwStatus)
 530 {
 531     IDsCaptureDriverBufferImpl *This = (IDsCaptureDriverBufferImpl *)iface;
 532     snd_pcm_state_t state;
 533     TRACE("(%p,%p)\n",iface,lpdwStatus);
 534
 535     state = snd_pcm_state(This->pcm);
 536     switch (state)
 537     {
 538     case SND_PCM_STATE_XRUN:
 539     case SND_PCM_STATE_SUSPENDED:
 540     case SND_PCM_STATE_RUNNING:
 541         *lpdwStatus = DSCBSTATUS_CAPTURING | (This->play_looping ? DSCBSTATUS_LOOPING : 0);
 542         break;
 543     default:
 544         *lpdwStatus = 0;
 545         break;
 546     }
 547
 548     TRACE("State: %d, flags: 0x%08x\n", state, *lpdwStatus);
 549     return DS_OK;
 550 }
 551
 552 static HRESULT WINAPI IDsCaptureDriverBufferImpl_Start(PIDSCDRIVERBUFFER iface, DWORD dwFlags)
 553 {
 554     IDsCaptureDriverBufferImpl *This = (IDsCaptureDriverBufferImpl *)iface;
 555     TRACE("(%p,%x)\n",iface,dwFlags);
 556
 557     /* **** */
 558     EnterCriticalSection(&This->pcm_crst);
 559     snd_pcm_start(This->pcm);
 560     This->play_looping = !!(dwFlags & DSCBSTART_LOOPING);
 561     if (!This->play_looping)
 562         /* Not well supported because of the difference in ALSA size and DSOUND's notion of size
 563          * what it does right now is fill the buffer once.. ALSA size */
 564         FIXME("Non-looping buffers are not properly supported!\n");
 565     CommitAll(This, TRUE);
 566     /* **** */
 567     LeaveCriticalSection(&This->pcm_crst);
 568     return DS_OK;
 569 }
 570
 571 static HRESULT WINAPI IDsCaptureDriverBufferImpl_Stop(PIDSCDRIVERBUFFER iface)
 572 {
 573     IDsCaptureDriverBufferImpl *This = (IDsCaptureDriverBufferImpl *)iface;
 574     TRACE("(%p)\n",iface);
 575
 576     /* **** */
 577     EnterCriticalSection(&This->pcm_crst);
 578     This->play_looping = FALSE;
 579     snd_pcm_drop(This->pcm);
 580     snd_pcm_prepare(This->pcm);
 581     /* **** */
 582     LeaveCriticalSection(&This->pcm_crst);
 583     return DS_OK;
 584 }
 585
 586 static const IDsCaptureDriverBufferVtbl dsdbvt =
 587 {
 588     IDsCaptureDriverBufferImpl_QueryInterface,
 589     IDsCaptureDriverBufferImpl_AddRef,
 590     IDsCaptureDriverBufferImpl_Release,
 591     IDsCaptureDriverBufferImpl_Lock,
 592     IDsCaptureDriverBufferImpl_Unlock,
 593     IDsCaptureDriverBufferImpl_SetFormat,
 594     IDsCaptureDriverBufferImpl_GetPosition,
 595     IDsCaptureDriverBufferImpl_GetStatus,
 596     IDsCaptureDriverBufferImpl_Start,
 597     IDsCaptureDriverBufferImpl_Stop
 598 };
 599
 600 static HRESULT WINAPI IDsCaptureDriverImpl_QueryInterface(PIDSCDRIVER iface, REFIID riid, LPVOID *ppobj)
 601 {
 602     /* IDsCaptureDriverImpl *This = (IDsCaptureDriverImpl *)iface; */
 603     FIXME("(%p): stub!\n",iface);
 604     return DSERR_UNSUPPORTED;
 605 }
 606
 607 static ULONG WINAPI IDsCaptureDriverImpl_AddRef(PIDSCDRIVER iface)
 608 {
 609     IDsCaptureDriverImpl *This = (IDsCaptureDriverImpl *)iface;
 610     ULONG refCount = InterlockedIncrement(&This->ref);
 611
 612     TRACE("(%p)->(ref before=%u)\n",This, refCount - 1);
 613
 614     return refCount;
 615 }
 616
 617 static ULONG WINAPI IDsCaptureDriverImpl_Release(PIDSCDRIVER iface)
 618 {
 619     IDsCaptureDriverImpl *This = (IDsCaptureDriverImpl *)iface;
 620     ULONG refCount = InterlockedDecrement(&This->ref);
 621
 622     TRACE("(%p)->(ref before=%u)\n",This, refCount + 1);
 623
 624     if (refCount)
 625         return refCount;
 626
 627     HeapFree(GetProcessHeap(), 0, This);
 628     return 0;
 629 }
 630
 631 static HRESULT WINAPI IDsCaptureDriverImpl_GetDriverDesc(PIDSCDRIVER iface, PDSDRIVERDESC pDesc)
 632 {
 633     IDsCaptureDriverImpl *This = (IDsCaptureDriverImpl *)iface;
 634     TRACE("(%p,%p)\n",iface,pDesc);
 635     memcpy(pDesc, &(WInDev[This->wDevID].ds_desc), sizeof(DSDRIVERDESC));
 636     pDesc->dwFlags              = 0;
 637     pDesc->dnDevNode            = WInDev[This->wDevID].waveDesc.dnDevNode;
 638     pDesc->wVxdId               = 0;
 639     pDesc->wReserved            = 0;
 640     pDesc->ulDeviceNum          = This->wDevID;
 641     pDesc->dwHeapType           = DSDHEAP_NOHEAP;
 642     pDesc->pvDirectDrawHeap     = NULL;
 643     pDesc->dwMemStartAddress    = 0xDEAD0000;
 644     pDesc->dwMemEndAddress      = 0xDEAF0000;
 645     pDesc->dwMemAllocExtra      = 0;
 646     pDesc->pvReserved1          = NULL;
 647     pDesc->pvReserved2          = NULL;
 648     return DS_OK;
 649 }
 650
 651 static HRESULT WINAPI IDsCaptureDriverImpl_Open(PIDSCDRIVER iface)
 652 {
 653     HRESULT hr = S_OK;
 654     IDsCaptureDriverImpl *This = (IDsCaptureDriverImpl *)iface;
 655     int err=0;
 656     snd_pcm_t *pcm = NULL;
 657     snd_pcm_hw_params_t *hw_params;
 658
 659     /* While this is not really needed, it is a good idea to do this,
 660      * to see if sound can be initialized */
 661
 662     hw_params = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, snd_pcm_hw_params_sizeof());
 663     if (!hw_params)
 664     {
 665         hr = DSERR_OUTOFMEMORY;
 666         WARN("--> %08x\n", hr);
 667         return hr;
 668     }
 669
 670     err = snd_pcm_open(&pcm, WOutDev[This->wDevID].pcmname, SND_PCM_STREAM_CAPTURE, SND_PCM_NONBLOCK);
 671     if (err < 0) goto err;
 672     err = snd_pcm_hw_params_any(pcm, hw_params);
 673     if (err < 0) goto err;
 674     err = snd_pcm_hw_params_set_access (pcm, hw_params, SND_PCM_ACCESS_MMAP_INTERLEAVED);
 675     if (err < 0) goto err;
 676
 677     TRACE("Success\n");
 678     snd_pcm_close(pcm);
 679     HeapFree(GetProcessHeap(), 0, hw_params);
 680     return hr;
 681
 682     err:
 683     hr = DSERR_GENERIC;
 684     WARN("Failed to open device: %s\n", snd_strerror(err));
 685     if (pcm)
 686         snd_pcm_close(pcm);
 687     HeapFree(GetProcessHeap(), 0, hw_params);
 688     WARN("--> %08x\n", hr);
 689     return hr;
 690 }
 691
 692 static HRESULT WINAPI IDsCaptureDriverImpl_Close(PIDSCDRIVER iface)
 693 {
 694     IDsCaptureDriverImpl *This = (IDsCaptureDriverImpl *)iface;
 695     TRACE("(%p) stub, harmless\n",This);
 696     return DS_OK;
 697 }
 698
 699 static HRESULT WINAPI IDsCaptureDriverImpl_GetCaps(PIDSCDRIVER iface, PDSCDRIVERCAPS pCaps)
 700 {
 701     IDsCaptureDriverImpl *This = (IDsCaptureDriverImpl *)iface;
 702     WINE_WAVEDEV *wwi = &WInDev[This->wDevID];
 703     TRACE("(%p,%p)\n",iface,pCaps);
 704     pCaps->dwSize = sizeof(DSCDRIVERCAPS);
 705     pCaps->dwFlags = wwi->ds_caps.dwFlags;
 706     pCaps->dwFormats = wwi->incaps.dwFormats;
 707     pCaps->dwChannels = wwi->incaps.wChannels;
 708     return DS_OK;
 709 }
 710
 711 static HRESULT WINAPI IDsCaptureDriverImpl_CreateCaptureBuffer(PIDSCDRIVER iface,
 712                                                       LPWAVEFORMATEX pwfx,
 713                                                       DWORD dwFlags, DWORD dwCardAddress,
 714                                                       LPDWORD pdwcbBufferSize,
 715                                                       LPBYTE *ppbBuffer,
 716                                                       LPVOID *ppvObj)
 717 {
 718     IDsCaptureDriverImpl *This = (IDsCaptureDriverImpl *)iface;
 719     IDsCaptureDriverBufferImpl** ippdsdb = (IDsCaptureDriverBufferImpl**)ppvObj;
 720     HRESULT err;
 721
 722     TRACE("(%p,%p,%x,%x)\n",iface,pwfx,dwFlags,dwCardAddress);
 723
 724     if (This->capture_buffer)
 725         return DSERR_ALLOCATED;
 726
 727     This->capture_buffer = *ippdsdb = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(IDsCaptureDriverBufferImpl));
 728     if (*ippdsdb == NULL)
 729         return DSERR_OUTOFMEMORY;
 730
 731     (*ippdsdb)->hw_params = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, snd_pcm_hw_params_sizeof());
 732     (*ippdsdb)->sw_params = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, snd_pcm_sw_params_sizeof());
 733     (*ippdsdb)->presented_buffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, *pdwcbBufferSize);
 734     if (!(*ippdsdb)->hw_params || !(*ippdsdb)->sw_params || !(*ippdsdb)->presented_buffer)
 735     {
 736         HeapFree(GetProcessHeap(), 0, (*ippdsdb)->sw_params);
 737         HeapFree(GetProcessHeap(), 0, (*ippdsdb)->hw_params);
 738         HeapFree(GetProcessHeap(), 0, (*ippdsdb)->presented_buffer);
 739         return DSERR_OUTOFMEMORY;
 740     }
 741     (*ippdsdb)->lpVtbl = &dsdbvt;
 742     (*ippdsdb)->ref = 1;
 743     (*ippdsdb)->drv = This;
 744     (*ippdsdb)->mmap_buflen_bytes = *pdwcbBufferSize;
 745     InitializeCriticalSection(&(*ippdsdb)->pcm_crst);
 746     (*ippdsdb)->pcm_crst.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": ALSA_DSCAPTURE.pcm_crst");
 747
 748     /* SetFormat initialises pcm */
 749     err = IDsDriverBuffer_SetFormat((IDsDriverBuffer*)*ppvObj, pwfx);
 750     if (FAILED(err))
 751     {
 752         WARN("Error occurred: %08x\n", err);
 753         goto err;
 754     }
 755     *ppbBuffer = (*ippdsdb)->presented_buffer;
 756
 757     /* buffer is ready to go */
 758     TRACE("buffer created at %p\n", *ippdsdb);
 759     return err;
 760
 761     err:
 762     HeapFree(GetProcessHeap(), 0, (*ippdsdb)->presented_buffer);
 763     HeapFree(GetProcessHeap(), 0, (*ippdsdb)->sw_params);
 764     HeapFree(GetProcessHeap(), 0, (*ippdsdb)->hw_params);
 765     HeapFree(GetProcessHeap(), 0, *ippdsdb);
 766     *ippdsdb = NULL;
 767     return err;
 768 }
 769
 770 static const IDsCaptureDriverVtbl dscdvt =
 771 {
 772     IDsCaptureDriverImpl_QueryInterface,
 773     IDsCaptureDriverImpl_AddRef,
 774     IDsCaptureDriverImpl_Release,
 775     IDsCaptureDriverImpl_GetDriverDesc,
 776     IDsCaptureDriverImpl_Open,
 777     IDsCaptureDriverImpl_Close,
 778     IDsCaptureDriverImpl_GetCaps,
 779     IDsCaptureDriverImpl_CreateCaptureBuffer
 780 };
 781
 782 /**************************************************************************
 783  *                              widDsCreate                     [internal]
 784  */
 785 DWORD widDsCreate(UINT wDevID, PIDSCDRIVER* drv)
 786 {
 787     IDsCaptureDriverImpl** idrv = (IDsCaptureDriverImpl**)drv;
 788     TRACE("(%d,%p)\n",wDevID,drv);
 789
 790     if (!(WInDev[wDevID].dwSupport & WAVECAPS_DIRECTSOUND))
 791     {
 792         WARN("Hardware accelerated capture not supported, falling back to wavein\n");
 793         return MMSYSERR_NOTSUPPORTED;
 794     }
 795
 796     *idrv = HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,sizeof(IDsCaptureDriverImpl));
 797     if (!*idrv)
 798         return MMSYSERR_NOMEM;
 799     (*idrv)->lpVtbl     = &dscdvt;
 800     (*idrv)->ref        = 1;
 801
 802     (*idrv)->wDevID     = wDevID;
 803     return MMSYSERR_NOERROR;
 804 }
 805
 806 /**************************************************************************
 807  *                              widDsDesc                       [internal]
 808  */
 809 DWORD widDsDesc(UINT wDevID, PDSDRIVERDESC desc)
 810 {
 811     memcpy(desc, &(WInDev[wDevID].ds_desc), sizeof(DSDRIVERDESC));
 812     return MMSYSERR_NOERROR;
 813 }
 814
 815 #endif /* HAVE_ALSA */