1093 lines
36 KiB
C
1093 lines
36 KiB
C
/*
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* Sample Wine Driver for Advanced Linux Sound System (ALSA)
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* Based on version <final> of the ALSA API
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*
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* Copyright 2007 - Maarten Lankhorst
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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/*======================================================================*
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* Low level dsound input implementation *
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*======================================================================*/
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#include "config.h"
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#include "wine/port.h"
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#include <stdlib.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <string.h>
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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#include <errno.h>
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#include <limits.h>
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#include <fcntl.h>
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#ifdef HAVE_SYS_IOCTL_H
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# include <sys/ioctl.h>
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#endif
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#ifdef HAVE_SYS_MMAN_H
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# include <sys/mman.h>
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#endif
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#include "windef.h"
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#include "winbase.h"
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#include "wingdi.h"
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#include "winerror.h"
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#include "winuser.h"
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#include "mmddk.h"
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#include "alsa.h"
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#include "wine/library.h"
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#include "wine/unicode.h"
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#include "wine/debug.h"
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/* Notify timer checks every 10 ms with a resolution of 2 ms */
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#define DS_TIME_DEL 10
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#define DS_TIME_RES 2
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WINE_DEFAULT_DEBUG_CHANNEL(dsalsa);
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typedef struct IDsCaptureDriverBufferImpl IDsCaptureDriverBufferImpl;
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typedef struct IDsCaptureDriverImpl
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{
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const IDsCaptureDriverVtbl *lpVtbl;
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LONG ref;
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IDsCaptureDriverBufferImpl* capture_buffer;
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UINT wDevID;
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} IDsCaptureDriverImpl;
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typedef struct IDsCaptureDriverNotifyImpl
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{
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const IDsDriverNotifyVtbl *lpVtbl;
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LONG ref;
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IDsCaptureDriverBufferImpl *buffer;
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DSBPOSITIONNOTIFY *notifies;
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DWORD nrofnotifies, playpos;
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UINT timerID;
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} IDsCaptureDriverNotifyImpl;
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struct IDsCaptureDriverBufferImpl
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{
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const IDsCaptureDriverBufferVtbl *lpVtbl;
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LONG ref;
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IDsCaptureDriverImpl *drv;
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IDsCaptureDriverNotifyImpl *notify;
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CRITICAL_SECTION pcm_crst;
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LPBYTE mmap_buffer, presented_buffer;
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DWORD mmap_buflen_bytes, play_looping, mmap_ofs_bytes;
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BOOL mmap;
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/* Note: snd_pcm_frames_to_bytes(This->pcm, mmap_buflen_frames) != mmap_buflen_bytes */
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/* The actual buffer may differ in size from the wanted buffer size */
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snd_pcm_t *pcm;
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snd_pcm_hw_params_t *hw_params;
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snd_pcm_sw_params_t *sw_params;
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snd_pcm_uframes_t mmap_buflen_frames, mmap_pos;
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};
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static void Capture_CheckNotify(IDsCaptureDriverNotifyImpl *This, DWORD from, DWORD len)
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{
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unsigned i;
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for (i = 0; i < This->nrofnotifies; ++i) {
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LPDSBPOSITIONNOTIFY event = This->notifies + i;
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DWORD offset = event->dwOffset;
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TRACE("checking %d, position %d, event = %p\n", i, offset, event->hEventNotify);
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if (offset == DSBPN_OFFSETSTOP) {
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if (!from && !len) {
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SetEvent(event->hEventNotify);
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TRACE("signalled event %p (%d)\n", event->hEventNotify, i);
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return;
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}
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else return;
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}
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if (offset >= from && offset < (from + len))
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{
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TRACE("signalled event %p (%d)\n", event->hEventNotify, i);
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SetEvent(event->hEventNotify);
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}
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}
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}
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static void CALLBACK Capture_Notify(UINT timerID, UINT msg, DWORD_PTR dwUser, DWORD_PTR dw1, DWORD_PTR dw2)
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{
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IDsCaptureDriverBufferImpl *This = (IDsCaptureDriverBufferImpl *)dwUser;
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DWORD last_playpos, playpos;
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PIDSCDRIVERBUFFER iface = (PIDSCDRIVERBUFFER)This;
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/* **** */
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/* Don't deadlock since there is a critical section can be held by the timer api itself while running this code */
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if (!TryEnterCriticalSection(&This->pcm_crst)) return;
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IDsDriverBuffer_GetPosition(iface, &playpos, NULL);
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last_playpos = This->notify->playpos;
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This->notify->playpos = playpos;
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if (snd_pcm_state(This->pcm) != SND_PCM_STATE_RUNNING || last_playpos == playpos || !This->notify->nrofnotifies || !This->notify->notifies)
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goto done;
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if (playpos < last_playpos)
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{
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Capture_CheckNotify(This->notify, last_playpos, This->mmap_buflen_bytes);
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if (playpos)
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Capture_CheckNotify(This->notify, 0, playpos);
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}
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else Capture_CheckNotify(This->notify, last_playpos, playpos - last_playpos);
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done:
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LeaveCriticalSection(&This->pcm_crst);
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/* **** */
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}
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static HRESULT WINAPI IDsCaptureDriverNotifyImpl_QueryInterface(PIDSDRIVERNOTIFY iface, REFIID riid, LPVOID *ppobj)
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{
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IDsCaptureDriverNotifyImpl *This = (IDsCaptureDriverNotifyImpl *)iface;
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TRACE("(%p,%s,%p)\n",This,debugstr_guid(riid),ppobj);
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if ( IsEqualGUID(riid, &IID_IUnknown) ||
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IsEqualGUID(riid, &IID_IDsDriverNotify) ) {
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IDsDriverNotify_AddRef(iface);
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*ppobj = This;
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return DS_OK;
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}
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FIXME( "Unknown IID %s\n", debugstr_guid(riid));
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*ppobj = 0;
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return E_NOINTERFACE;
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}
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static ULONG WINAPI IDsCaptureDriverNotifyImpl_AddRef(PIDSDRIVERNOTIFY iface)
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{
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IDsCaptureDriverNotifyImpl *This = (IDsCaptureDriverNotifyImpl *)iface;
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ULONG refCount = InterlockedIncrement(&This->ref);
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TRACE("(%p) ref was %d\n", This, refCount - 1);
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return refCount;
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}
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static ULONG WINAPI IDsCaptureDriverNotifyImpl_Release(PIDSDRIVERNOTIFY iface)
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{
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IDsCaptureDriverNotifyImpl *This = (IDsCaptureDriverNotifyImpl *)iface;
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ULONG refCount = InterlockedDecrement(&This->ref);
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TRACE("(%p) ref was %d\n", This, refCount + 1);
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if (!refCount) {
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This->buffer->notify = NULL;
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if (This->timerID)
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{
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timeKillEvent(This->timerID);
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timeEndPeriod(DS_TIME_RES);
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}
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HeapFree(GetProcessHeap(), 0, This->notifies);
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HeapFree(GetProcessHeap(), 0, This);
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TRACE("(%p) released\n", This);
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}
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return refCount;
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}
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static HRESULT WINAPI IDsCaptureDriverNotifyImpl_SetNotificationPositions(PIDSDRIVERNOTIFY iface, DWORD howmuch, LPCDSBPOSITIONNOTIFY notify)
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{
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DWORD len = howmuch * sizeof(DSBPOSITIONNOTIFY);
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unsigned i;
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LPVOID notifies;
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IDsCaptureDriverNotifyImpl *This = (IDsCaptureDriverNotifyImpl *)iface;
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TRACE("(%p,0x%08x,%p)\n",This,howmuch,notify);
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if (!notify) {
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WARN("invalid parameter\n");
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return DSERR_INVALIDPARAM;
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}
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if (TRACE_ON(dsalsa))
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for (i=0;i<howmuch; ++i)
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TRACE("notify at %d to %p\n", notify[i].dwOffset, notify[i].hEventNotify);
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/* **** */
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EnterCriticalSection(&This->buffer->pcm_crst);
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/* Make an internal copy of the caller-supplied array.
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* Replace the existing copy if one is already present. */
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if (This->notifies)
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notifies = HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, This->notifies, len);
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else
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notifies = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, len);
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if (!notifies)
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{
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LeaveCriticalSection(&This->buffer->pcm_crst);
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/* **** */
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return DSERR_OUTOFMEMORY;
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}
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This->notifies = notifies;
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memcpy(This->notifies, notify, len);
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This->nrofnotifies = howmuch;
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IDsDriverBuffer_GetPosition((PIDSCDRIVERBUFFER)This->buffer, &This->playpos, NULL);
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if (!This->timerID)
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{
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timeBeginPeriod(DS_TIME_RES);
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This->timerID = timeSetEvent(DS_TIME_DEL, DS_TIME_RES, Capture_Notify, (DWORD_PTR)This->buffer, TIME_PERIODIC | TIME_KILL_SYNCHRONOUS);
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}
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LeaveCriticalSection(&This->buffer->pcm_crst);
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/* **** */
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return S_OK;
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}
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static const IDsDriverNotifyVtbl dscdnvt =
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{
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IDsCaptureDriverNotifyImpl_QueryInterface,
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IDsCaptureDriverNotifyImpl_AddRef,
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IDsCaptureDriverNotifyImpl_Release,
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IDsCaptureDriverNotifyImpl_SetNotificationPositions,
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};
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#if 0
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/** Convert the position an application sees into a position ALSA sees */
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static snd_pcm_uframes_t fakepos_to_realpos(const IDsCaptureDriverBufferImpl* This, DWORD fakepos)
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{
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snd_pcm_uframes_t realpos;
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if (fakepos < This->mmap_ofs_bytes)
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realpos = This->mmap_buflen_bytes + fakepos - This->mmap_ofs_bytes;
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else realpos = fakepos - This->mmap_ofs_bytes;
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return snd_pcm_bytes_to_frames(This->pcm, realpos) % This->mmap_buflen_frames;
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}
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#endif
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/** Convert the position ALSA sees into a position an application sees */
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static DWORD realpos_to_fakepos(const IDsCaptureDriverBufferImpl* This, snd_pcm_uframes_t realpos)
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{
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DWORD realposb = snd_pcm_frames_to_bytes(This->pcm, realpos);
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return (realposb + This->mmap_ofs_bytes) % This->mmap_buflen_bytes;
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}
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/** Raw copy data, with buffer wrap around */
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static void CopyDataWrap(const IDsCaptureDriverBufferImpl* This, LPBYTE dest, DWORD fromwhere, DWORD copylen, DWORD buflen)
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{
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DWORD remainder = buflen - fromwhere;
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if (remainder >= copylen)
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{
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CopyMemory(dest, This->mmap_buffer + fromwhere, copylen);
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}
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else
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{
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CopyMemory(dest, This->mmap_buffer + fromwhere, remainder);
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copylen -= remainder;
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CopyMemory(dest, This->mmap_buffer, copylen);
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}
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}
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/** Copy data from the mmap buffer to backbuffer, taking into account all wraparounds that may occur */
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static void CopyData(const IDsCaptureDriverBufferImpl* This, snd_pcm_uframes_t fromwhere, snd_pcm_uframes_t len)
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{
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DWORD dlen = snd_pcm_frames_to_bytes(This->pcm, len) % This->mmap_buflen_bytes;
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/* Backbuffer */
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DWORD ofs = realpos_to_fakepos(This, fromwhere);
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DWORD remainder = This->mmap_buflen_bytes - ofs;
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/* MMAP buffer */
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DWORD realbuflen = snd_pcm_frames_to_bytes(This->pcm, This->mmap_buflen_frames);
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DWORD realofs = snd_pcm_frames_to_bytes(This->pcm, fromwhere);
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if (remainder >= dlen)
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{
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CopyDataWrap(This, This->presented_buffer + ofs, realofs, dlen, realbuflen);
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}
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else
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{
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CopyDataWrap(This, This->presented_buffer + ofs, realofs, remainder, realbuflen);
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dlen -= remainder;
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CopyDataWrap(This, This->presented_buffer, (realofs+remainder)%realbuflen, dlen, realbuflen);
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}
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}
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/** Fill buffers, for starting and stopping
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* Alsa won't start playing until everything is filled up
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* This also updates mmap_pos
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*
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* Returns: Amount of periods in use so snd_pcm_avail_update
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* doesn't have to be called up to 4x in GetPosition()
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*/
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static snd_pcm_uframes_t CommitAll(IDsCaptureDriverBufferImpl *This, DWORD forced)
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{
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const snd_pcm_channel_area_t *areas;
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snd_pcm_uframes_t used;
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const snd_pcm_uframes_t commitahead = This->mmap_buflen_frames;
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used = This->mmap_buflen_frames - snd_pcm_avail_update(This->pcm);
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TRACE("%p needs to commit to %lu, used: %lu\n", This, commitahead, used);
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if (used < commitahead && (forced || This->play_looping))
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{
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snd_pcm_uframes_t done, putin = commitahead - used;
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if (This->mmap)
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{
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snd_pcm_mmap_begin(This->pcm, &areas, &This->mmap_pos, &putin);
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CopyData(This, This->mmap_pos, putin);
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done = snd_pcm_mmap_commit(This->pcm, This->mmap_pos, putin);
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This->mmap_pos += done;
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used += done;
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putin = commitahead - used;
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if (This->mmap_pos == This->mmap_buflen_frames && (snd_pcm_sframes_t)putin > 0 && This->play_looping)
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{
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This->mmap_ofs_bytes += snd_pcm_frames_to_bytes(This->pcm, This->mmap_buflen_frames);
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This->mmap_ofs_bytes %= This->mmap_buflen_bytes;
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snd_pcm_mmap_begin(This->pcm, &areas, &This->mmap_pos, &putin);
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CopyData(This, This->mmap_pos, putin);
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done = snd_pcm_mmap_commit(This->pcm, This->mmap_pos, putin);
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This->mmap_pos += done;
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used += done;
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}
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}
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else
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{
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DWORD pos;
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snd_pcm_sframes_t ret;
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snd_pcm_uframes_t cap = snd_pcm_bytes_to_frames(This->pcm, This->mmap_buflen_bytes);
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pos = realpos_to_fakepos(This, This->mmap_pos);
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if (This->mmap_pos + putin > cap)
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putin = cap - This->mmap_pos;
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ret = snd_pcm_readi(This->pcm, This->presented_buffer + pos, putin);
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if (ret == -EPIPE)
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{
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WARN("Underrun occurred\n");
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snd_pcm_prepare(This->pcm);
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ret = snd_pcm_readi(This->pcm, This->presented_buffer + pos, putin);
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snd_pcm_start(This->pcm);
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}
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if (ret < 0)
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{
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WARN("Committing data: %ld / %s (%ld)\n", ret, snd_strerror(ret), putin);
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ret = 0;
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}
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This->mmap_pos += ret;
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used += ret;
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/* At this point mmap_pos may be >= This->mmap_pos this is harmless
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* realpos_to_fakepos handles it well, and below it is truncated
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*/
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putin = commitahead - used;
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if (putin > 0)
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{
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pos = realpos_to_fakepos(This, This->mmap_pos);
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ret = snd_pcm_readi(This->pcm, This->presented_buffer + pos, putin);
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if (ret > 0)
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{
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This->mmap_pos += ret;
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used += ret;
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}
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}
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}
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}
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if (This->mmap_pos >= This->mmap_buflen_frames)
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{
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This->mmap_ofs_bytes += snd_pcm_frames_to_bytes(This->pcm, This->mmap_buflen_frames);
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This->mmap_ofs_bytes %= This->mmap_buflen_bytes;
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This->mmap_pos -= This->mmap_buflen_frames;
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}
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return used;
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}
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static void CheckXRUN(IDsCaptureDriverBufferImpl* This)
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{
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snd_pcm_state_t state = snd_pcm_state(This->pcm);
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int err;
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if ( state == SND_PCM_STATE_XRUN )
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{
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err = snd_pcm_prepare(This->pcm);
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CommitAll(This, FALSE);
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snd_pcm_start(This->pcm);
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WARN("xrun occurred\n");
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if ( err < 0 )
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ERR("recovery from xrun failed, prepare failed: %s\n", snd_strerror(err));
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}
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else if ( state == SND_PCM_STATE_SUSPENDED )
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{
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int err = snd_pcm_resume(This->pcm);
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TRACE("recovery from suspension occurred\n");
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if (err < 0 && err != -EAGAIN){
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err = snd_pcm_prepare(This->pcm);
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if (err < 0)
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ERR("recovery from suspend failed, prepare failed: %s\n", snd_strerror(err));
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}
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}
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else if ( state != SND_PCM_STATE_RUNNING)
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{
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WARN("Unhandled state: %d\n", state);
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}
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}
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|
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/**
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* Allocate the memory-mapped buffer for direct sound, and set up the
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* callback.
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*/
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static int CreateMMAP(IDsCaptureDriverBufferImpl* pdbi)
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{
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snd_pcm_t *pcm = pdbi->pcm;
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snd_pcm_format_t format;
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snd_pcm_uframes_t frames, ofs, avail, psize, boundary;
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unsigned int channels, bits_per_sample, bits_per_frame;
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int err, mmap_mode;
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const snd_pcm_channel_area_t *areas;
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snd_pcm_hw_params_t *hw_params = pdbi->hw_params;
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snd_pcm_sw_params_t *sw_params = pdbi->sw_params;
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mmap_mode = snd_pcm_type(pcm);
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if (mmap_mode == SND_PCM_TYPE_HW)
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TRACE("mmap'd buffer is a direct hardware buffer.\n");
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else if (mmap_mode == SND_PCM_TYPE_DMIX)
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TRACE("mmap'd buffer is an ALSA dmix buffer\n");
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else
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TRACE("mmap'd buffer is an ALSA type %d buffer\n", mmap_mode);
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err = snd_pcm_hw_params_get_period_size(hw_params, &psize, NULL);
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err = snd_pcm_hw_params_get_format(hw_params, &format);
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err = snd_pcm_hw_params_get_buffer_size(hw_params, &frames);
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err = snd_pcm_hw_params_get_channels(hw_params, &channels);
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bits_per_sample = snd_pcm_format_physical_width(format);
|
|
bits_per_frame = bits_per_sample * channels;
|
|
|
|
if (TRACE_ON(dsalsa))
|
|
ALSA_TraceParameters(hw_params, NULL, FALSE);
|
|
|
|
TRACE("format=%s frames=%ld channels=%d bits_per_sample=%d bits_per_frame=%d\n",
|
|
snd_pcm_format_name(format), frames, channels, bits_per_sample, bits_per_frame);
|
|
|
|
pdbi->mmap_buflen_frames = frames;
|
|
snd_pcm_sw_params_current(pcm, sw_params);
|
|
snd_pcm_sw_params_set_start_threshold(pcm, sw_params, 0);
|
|
snd_pcm_sw_params_get_boundary(sw_params, &boundary);
|
|
snd_pcm_sw_params_set_stop_threshold(pcm, sw_params, boundary);
|
|
snd_pcm_sw_params_set_silence_threshold(pcm, sw_params, INT_MAX);
|
|
snd_pcm_sw_params_set_silence_size(pcm, sw_params, 0);
|
|
snd_pcm_sw_params_set_avail_min(pcm, sw_params, 0);
|
|
err = snd_pcm_sw_params(pcm, sw_params);
|
|
|
|
pdbi->mmap_ofs_bytes = 0;
|
|
if (!pdbi->mmap)
|
|
{
|
|
pdbi->mmap_buffer = NULL;
|
|
|
|
frames = snd_pcm_bytes_to_frames(pdbi->pcm, pdbi->mmap_buflen_bytes);
|
|
snd_pcm_format_set_silence(format, pdbi->presented_buffer, frames);
|
|
pdbi->mmap_pos = 0;
|
|
}
|
|
else
|
|
{
|
|
err = snd_pcm_mmap_begin(pcm, &areas, &ofs, &avail);
|
|
if ( err < 0 )
|
|
{
|
|
ERR("Can't map sound device for direct access: %s/%d\n", snd_strerror(err), err);
|
|
return DSERR_GENERIC;
|
|
}
|
|
snd_pcm_format_set_silence(format, areas->addr, pdbi->mmap_buflen_frames);
|
|
pdbi->mmap_pos = ofs + snd_pcm_mmap_commit(pcm, ofs, 0);
|
|
pdbi->mmap_buffer = areas->addr;
|
|
}
|
|
|
|
TRACE("created mmap buffer of %ld frames (%d bytes) at %p\n",
|
|
pdbi->mmap_buflen_frames, pdbi->mmap_buflen_bytes, pdbi->mmap_buffer);
|
|
|
|
return DS_OK;
|
|
}
|
|
|
|
static HRESULT WINAPI IDsCaptureDriverBufferImpl_QueryInterface(PIDSCDRIVERBUFFER iface, REFIID riid, LPVOID *ppobj)
|
|
{
|
|
IDsCaptureDriverBufferImpl *This = (IDsCaptureDriverBufferImpl *)iface;
|
|
if ( IsEqualGUID(riid, &IID_IUnknown) ||
|
|
IsEqualGUID(riid, &IID_IDsCaptureDriverBuffer) ) {
|
|
IDsCaptureDriverBuffer_AddRef(iface);
|
|
*ppobj = iface;
|
|
return DS_OK;
|
|
}
|
|
|
|
if ( IsEqualGUID( &IID_IDsDriverNotify, riid ) ) {
|
|
if (!This->notify)
|
|
{
|
|
This->notify = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(IDsCaptureDriverNotifyImpl));
|
|
if (!This->notify)
|
|
return DSERR_OUTOFMEMORY;
|
|
This->notify->lpVtbl = &dscdnvt;
|
|
This->notify->buffer = This;
|
|
|
|
/* Keep a lock on IDsDriverNotify for ourself, so it is destroyed when the buffer is */
|
|
IDsDriverNotify_AddRef((PIDSDRIVERNOTIFY)This->notify);
|
|
}
|
|
IDsDriverNotify_AddRef((PIDSDRIVERNOTIFY)This->notify);
|
|
*ppobj = This->notify;
|
|
return DS_OK;
|
|
}
|
|
|
|
if ( IsEqualGUID( &IID_IDsDriverPropertySet, riid ) ) {
|
|
FIXME("Unsupported interface IID_IDsDriverPropertySet\n");
|
|
return E_FAIL;
|
|
}
|
|
|
|
FIXME("(): Unknown interface %s\n", debugstr_guid(riid));
|
|
return DSERR_UNSUPPORTED;
|
|
}
|
|
|
|
static ULONG WINAPI IDsCaptureDriverBufferImpl_AddRef(PIDSCDRIVERBUFFER iface)
|
|
{
|
|
IDsCaptureDriverBufferImpl *This = (IDsCaptureDriverBufferImpl *)iface;
|
|
ULONG refCount = InterlockedIncrement(&This->ref);
|
|
|
|
TRACE("(%p)->(ref before=%u)\n",This, refCount - 1);
|
|
|
|
return refCount;
|
|
}
|
|
|
|
static ULONG WINAPI IDsCaptureDriverBufferImpl_Release(PIDSCDRIVERBUFFER iface)
|
|
{
|
|
IDsCaptureDriverBufferImpl *This = (IDsCaptureDriverBufferImpl *)iface;
|
|
ULONG refCount = InterlockedDecrement(&This->ref);
|
|
|
|
TRACE("(%p)->(ref before=%u)\n",This, refCount + 1);
|
|
|
|
if (refCount)
|
|
return refCount;
|
|
|
|
EnterCriticalSection(&This->pcm_crst);
|
|
if (This->notify)
|
|
IDsDriverNotify_Release((PIDSDRIVERNOTIFY)This->notify);
|
|
TRACE("mmap buffer %p destroyed\n", This->mmap_buffer);
|
|
|
|
This->drv->capture_buffer = NULL;
|
|
LeaveCriticalSection(&This->pcm_crst);
|
|
This->pcm_crst.DebugInfo->Spare[0] = 0;
|
|
DeleteCriticalSection(&This->pcm_crst);
|
|
|
|
snd_pcm_drop(This->pcm);
|
|
snd_pcm_close(This->pcm);
|
|
This->pcm = NULL;
|
|
HeapFree(GetProcessHeap(), 0, This->presented_buffer);
|
|
HeapFree(GetProcessHeap(), 0, This->sw_params);
|
|
HeapFree(GetProcessHeap(), 0, This->hw_params);
|
|
HeapFree(GetProcessHeap(), 0, This);
|
|
return 0;
|
|
}
|
|
|
|
static HRESULT WINAPI IDsCaptureDriverBufferImpl_Lock(PIDSCDRIVERBUFFER iface, LPVOID*ppvAudio1,LPDWORD pdwLen1,LPVOID*ppvAudio2,LPDWORD pdwLen2, DWORD dwWritePosition,DWORD dwWriteLen, DWORD dwFlags)
|
|
{
|
|
IDsCaptureDriverBufferImpl *This = (IDsCaptureDriverBufferImpl *)iface;
|
|
TRACE("(%p,%p,%p,%p,%p,%d,%d,0x%08x)\n", This, ppvAudio1, pdwLen1, ppvAudio2, pdwLen2, dwWritePosition, dwWriteLen, dwFlags);
|
|
|
|
if (ppvAudio1)
|
|
*ppvAudio1 = (LPBYTE)This->presented_buffer + dwWritePosition;
|
|
|
|
if (dwWritePosition + dwWriteLen <= This->mmap_buflen_bytes) {
|
|
if (pdwLen1)
|
|
*pdwLen1 = dwWriteLen;
|
|
if (ppvAudio2)
|
|
*ppvAudio2 = 0;
|
|
if (pdwLen2)
|
|
*pdwLen2 = 0;
|
|
} else {
|
|
if (pdwLen1)
|
|
*pdwLen1 = This->mmap_buflen_bytes - dwWritePosition;
|
|
if (ppvAudio2)
|
|
*ppvAudio2 = This->presented_buffer;
|
|
if (pdwLen2)
|
|
*pdwLen2 = dwWriteLen - (This->mmap_buflen_bytes - dwWritePosition);
|
|
}
|
|
return DS_OK;
|
|
}
|
|
|
|
static HRESULT WINAPI IDsCaptureDriverBufferImpl_Unlock(PIDSCDRIVERBUFFER iface, LPVOID pvAudio1,DWORD dwLen1, LPVOID pvAudio2,DWORD dwLen2)
|
|
{
|
|
IDsCaptureDriverBufferImpl *This = (IDsCaptureDriverBufferImpl *)iface;
|
|
TRACE("(%p,%p,%d,%p,%d)\n",This,pvAudio1,dwLen1,pvAudio2,dwLen2);
|
|
return DS_OK;
|
|
}
|
|
|
|
static HRESULT WINAPI IDsCaptureDriverBufferImpl_SetFormat(PIDSCDRIVERBUFFER iface, LPWAVEFORMATEX pwfx)
|
|
{
|
|
IDsCaptureDriverBufferImpl *This = (IDsCaptureDriverBufferImpl *)iface;
|
|
WINE_WAVEDEV *wwi = &WInDev[This->drv->wDevID];
|
|
snd_pcm_t *pcm = NULL;
|
|
snd_pcm_hw_params_t *hw_params = This->hw_params;
|
|
snd_pcm_format_t format = -1;
|
|
snd_pcm_uframes_t buffer_size;
|
|
DWORD rate = pwfx->nSamplesPerSec;
|
|
int err=0;
|
|
BOOL mmap;
|
|
|
|
TRACE("(%p, %p)\n", iface, pwfx);
|
|
|
|
switch (pwfx->wBitsPerSample)
|
|
{
|
|
case 8: format = SND_PCM_FORMAT_U8; break;
|
|
case 16: format = SND_PCM_FORMAT_S16_LE; break;
|
|
case 24: format = SND_PCM_FORMAT_S24_3LE; break;
|
|
case 32: format = SND_PCM_FORMAT_S32_LE; break;
|
|
default: FIXME("Unsupported bpp: %d\n", pwfx->wBitsPerSample); return DSERR_GENERIC;
|
|
}
|
|
|
|
/* **** */
|
|
EnterCriticalSection(&This->pcm_crst);
|
|
|
|
err = snd_pcm_open(&pcm, wwi->pcmname, SND_PCM_STREAM_CAPTURE, SND_PCM_NONBLOCK);
|
|
|
|
if (err < 0)
|
|
{
|
|
if (errno != EBUSY || !This->pcm)
|
|
{
|
|
/* **** */
|
|
LeaveCriticalSection(&This->pcm_crst);
|
|
WARN("Cannot open sound device: %s\n", snd_strerror(err));
|
|
return DSERR_GENERIC;
|
|
}
|
|
snd_pcm_drop(This->pcm);
|
|
snd_pcm_close(This->pcm);
|
|
This->pcm = NULL;
|
|
err = snd_pcm_open(&pcm, wwi->pcmname, SND_PCM_STREAM_CAPTURE, SND_PCM_NONBLOCK);
|
|
if (err < 0)
|
|
{
|
|
/* **** */
|
|
LeaveCriticalSection(&This->pcm_crst);
|
|
WARN("Cannot open sound device: %s\n", snd_strerror(err));
|
|
return DSERR_BUFFERLOST;
|
|
}
|
|
}
|
|
|
|
/* Set some defaults */
|
|
snd_pcm_hw_params_any(pcm, hw_params);
|
|
|
|
err = snd_pcm_hw_params_set_channels(pcm, hw_params, pwfx->nChannels);
|
|
if (err < 0) { WARN("Could not set channels to %d\n", pwfx->nChannels); goto err; }
|
|
|
|
err = snd_pcm_hw_params_set_format(pcm, hw_params, format);
|
|
if (err < 0) { WARN("Could not set format to %d bpp\n", pwfx->wBitsPerSample); goto err; }
|
|
|
|
err = snd_pcm_hw_params_set_rate_near(pcm, hw_params, &rate, NULL);
|
|
if (err < 0) { rate = pwfx->nSamplesPerSec; WARN("Could not set rate\n"); goto err; }
|
|
|
|
if (!ALSA_NearMatch(rate, pwfx->nSamplesPerSec))
|
|
{
|
|
WARN("Could not set sound rate to %d, but instead to %d\n", pwfx->nSamplesPerSec, rate);
|
|
pwfx->nSamplesPerSec = rate;
|
|
pwfx->nAvgBytesPerSec = rate * pwfx->nBlockAlign;
|
|
/* Let DirectSound detect this */
|
|
}
|
|
|
|
snd_pcm_hw_params_set_periods_integer(pcm, hw_params);
|
|
buffer_size = This->mmap_buflen_bytes / pwfx->nBlockAlign;
|
|
snd_pcm_hw_params_set_buffer_size_near(pcm, hw_params, &buffer_size);
|
|
buffer_size = 5000;
|
|
snd_pcm_hw_params_set_period_time_near(pcm, hw_params, (unsigned int*)&buffer_size, NULL);
|
|
|
|
err = snd_pcm_hw_params_set_access (pcm, hw_params, SND_PCM_ACCESS_MMAP_INTERLEAVED);
|
|
if (err < 0)
|
|
{
|
|
err = snd_pcm_hw_params_set_access (pcm, hw_params, SND_PCM_ACCESS_RW_INTERLEAVED);
|
|
if (err < 0) { WARN("Could not set access\n"); goto err; }
|
|
mmap = 0;
|
|
}
|
|
else
|
|
mmap = 1;
|
|
|
|
err = snd_pcm_hw_params(pcm, hw_params);
|
|
if (err < 0) { WARN("Could not set hw parameters\n"); goto err; }
|
|
|
|
if (This->pcm)
|
|
{
|
|
snd_pcm_drop(This->pcm);
|
|
snd_pcm_close(This->pcm);
|
|
}
|
|
This->pcm = pcm;
|
|
This->mmap = mmap;
|
|
|
|
snd_pcm_prepare(This->pcm);
|
|
CreateMMAP(This);
|
|
|
|
/* **** */
|
|
LeaveCriticalSection(&This->pcm_crst);
|
|
return S_OK;
|
|
|
|
err:
|
|
if (err < 0)
|
|
WARN("Failed to apply changes: %s\n", snd_strerror(err));
|
|
|
|
if (!This->pcm)
|
|
This->pcm = pcm;
|
|
else
|
|
snd_pcm_close(pcm);
|
|
|
|
if (This->pcm)
|
|
snd_pcm_hw_params_current(This->pcm, This->hw_params);
|
|
|
|
/* **** */
|
|
LeaveCriticalSection(&This->pcm_crst);
|
|
return DSERR_BADFORMAT;
|
|
}
|
|
|
|
static HRESULT WINAPI IDsCaptureDriverBufferImpl_GetPosition(PIDSCDRIVERBUFFER iface, LPDWORD lpdwCappos, LPDWORD lpdwReadpos)
|
|
{
|
|
IDsCaptureDriverBufferImpl *This = (IDsCaptureDriverBufferImpl *)iface;
|
|
snd_pcm_uframes_t hw_pptr, hw_wptr;
|
|
|
|
EnterCriticalSection(&This->pcm_crst);
|
|
|
|
if (!This->pcm)
|
|
{
|
|
FIXME("Bad pointer for pcm: %p\n", This->pcm);
|
|
LeaveCriticalSection(&This->pcm_crst);
|
|
return DSERR_GENERIC;
|
|
}
|
|
|
|
if (snd_pcm_state(This->pcm) != SND_PCM_STATE_RUNNING)
|
|
{
|
|
CheckXRUN(This);
|
|
hw_pptr = This->mmap_pos;
|
|
}
|
|
else
|
|
{
|
|
/* FIXME: Unused at the moment */
|
|
snd_pcm_uframes_t used = CommitAll(This, FALSE);
|
|
|
|
if (This->mmap_pos > used)
|
|
hw_pptr = This->mmap_pos - used;
|
|
else
|
|
hw_pptr = This->mmap_buflen_frames - used + This->mmap_pos;
|
|
}
|
|
hw_wptr = This->mmap_pos;
|
|
|
|
if (lpdwCappos)
|
|
*lpdwCappos = realpos_to_fakepos(This, hw_pptr);
|
|
if (lpdwReadpos)
|
|
*lpdwReadpos = realpos_to_fakepos(This, hw_wptr);
|
|
|
|
LeaveCriticalSection(&This->pcm_crst);
|
|
|
|
TRACE("hw_pptr=%u, hw_wptr=%u playpos=%u(%p), writepos=%u(%p)\n", (unsigned int)hw_pptr, (unsigned int)hw_wptr, realpos_to_fakepos(This, hw_pptr), lpdwCappos, realpos_to_fakepos(This, hw_wptr), lpdwReadpos);
|
|
return DS_OK;
|
|
}
|
|
|
|
static HRESULT WINAPI IDsCaptureDriverBufferImpl_GetStatus(PIDSCDRIVERBUFFER iface, LPDWORD lpdwStatus)
|
|
{
|
|
IDsCaptureDriverBufferImpl *This = (IDsCaptureDriverBufferImpl *)iface;
|
|
snd_pcm_state_t state;
|
|
TRACE("(%p,%p)\n",iface,lpdwStatus);
|
|
|
|
state = snd_pcm_state(This->pcm);
|
|
switch (state)
|
|
{
|
|
case SND_PCM_STATE_XRUN:
|
|
case SND_PCM_STATE_SUSPENDED:
|
|
case SND_PCM_STATE_RUNNING:
|
|
*lpdwStatus = DSCBSTATUS_CAPTURING | (This->play_looping ? DSCBSTATUS_LOOPING : 0);
|
|
break;
|
|
default:
|
|
*lpdwStatus = 0;
|
|
break;
|
|
}
|
|
|
|
TRACE("State: %d, flags: 0x%08x\n", state, *lpdwStatus);
|
|
return DS_OK;
|
|
}
|
|
|
|
static HRESULT WINAPI IDsCaptureDriverBufferImpl_Start(PIDSCDRIVERBUFFER iface, DWORD dwFlags)
|
|
{
|
|
IDsCaptureDriverBufferImpl *This = (IDsCaptureDriverBufferImpl *)iface;
|
|
TRACE("(%p,%x)\n",iface,dwFlags);
|
|
|
|
/* **** */
|
|
EnterCriticalSection(&This->pcm_crst);
|
|
snd_pcm_start(This->pcm);
|
|
This->play_looping = !!(dwFlags & DSCBSTART_LOOPING);
|
|
if (!This->play_looping)
|
|
/* Not well supported because of the difference in ALSA size and DSOUND's notion of size
|
|
* what it does right now is fill the buffer once.. ALSA size */
|
|
FIXME("Non-looping buffers are not properly supported!\n");
|
|
CommitAll(This, TRUE);
|
|
|
|
if (This->notify && This->notify->nrofnotifies && This->notify->notifies)
|
|
{
|
|
DWORD playpos = realpos_to_fakepos(This, This->mmap_pos);
|
|
if (playpos)
|
|
Capture_CheckNotify(This->notify, 0, playpos);
|
|
This->notify->playpos = playpos;
|
|
}
|
|
|
|
/* **** */
|
|
LeaveCriticalSection(&This->pcm_crst);
|
|
return DS_OK;
|
|
}
|
|
|
|
static HRESULT WINAPI IDsCaptureDriverBufferImpl_Stop(PIDSCDRIVERBUFFER iface)
|
|
{
|
|
IDsCaptureDriverBufferImpl *This = (IDsCaptureDriverBufferImpl *)iface;
|
|
TRACE("(%p)\n",iface);
|
|
|
|
/* **** */
|
|
EnterCriticalSection(&This->pcm_crst);
|
|
This->play_looping = FALSE;
|
|
snd_pcm_drop(This->pcm);
|
|
snd_pcm_prepare(This->pcm);
|
|
|
|
if (This->notify && This->notify->notifies && This->notify->nrofnotifies)
|
|
Capture_CheckNotify(This->notify, 0, 0);
|
|
|
|
/* **** */
|
|
LeaveCriticalSection(&This->pcm_crst);
|
|
return DS_OK;
|
|
}
|
|
|
|
static const IDsCaptureDriverBufferVtbl dsdbvt =
|
|
{
|
|
IDsCaptureDriverBufferImpl_QueryInterface,
|
|
IDsCaptureDriverBufferImpl_AddRef,
|
|
IDsCaptureDriverBufferImpl_Release,
|
|
IDsCaptureDriverBufferImpl_Lock,
|
|
IDsCaptureDriverBufferImpl_Unlock,
|
|
IDsCaptureDriverBufferImpl_SetFormat,
|
|
IDsCaptureDriverBufferImpl_GetPosition,
|
|
IDsCaptureDriverBufferImpl_GetStatus,
|
|
IDsCaptureDriverBufferImpl_Start,
|
|
IDsCaptureDriverBufferImpl_Stop
|
|
};
|
|
|
|
static HRESULT WINAPI IDsCaptureDriverImpl_QueryInterface(PIDSCDRIVER iface, REFIID riid, LPVOID *ppobj)
|
|
{
|
|
/* IDsCaptureDriverImpl *This = (IDsCaptureDriverImpl *)iface; */
|
|
FIXME("(%p): stub!\n",iface);
|
|
return DSERR_UNSUPPORTED;
|
|
}
|
|
|
|
static ULONG WINAPI IDsCaptureDriverImpl_AddRef(PIDSCDRIVER iface)
|
|
{
|
|
IDsCaptureDriverImpl *This = (IDsCaptureDriverImpl *)iface;
|
|
ULONG refCount = InterlockedIncrement(&This->ref);
|
|
|
|
TRACE("(%p)->(ref before=%u)\n",This, refCount - 1);
|
|
|
|
return refCount;
|
|
}
|
|
|
|
static ULONG WINAPI IDsCaptureDriverImpl_Release(PIDSCDRIVER iface)
|
|
{
|
|
IDsCaptureDriverImpl *This = (IDsCaptureDriverImpl *)iface;
|
|
ULONG refCount = InterlockedDecrement(&This->ref);
|
|
|
|
TRACE("(%p)->(ref before=%u)\n",This, refCount + 1);
|
|
|
|
if (refCount)
|
|
return refCount;
|
|
|
|
HeapFree(GetProcessHeap(), 0, This);
|
|
return 0;
|
|
}
|
|
|
|
static HRESULT WINAPI IDsCaptureDriverImpl_GetDriverDesc(PIDSCDRIVER iface, PDSDRIVERDESC pDesc)
|
|
{
|
|
IDsCaptureDriverImpl *This = (IDsCaptureDriverImpl *)iface;
|
|
TRACE("(%p,%p)\n",iface,pDesc);
|
|
*pDesc = WInDev[This->wDevID].ds_desc;
|
|
pDesc->dwFlags = 0;
|
|
pDesc->dnDevNode = WInDev[This->wDevID].waveDesc.dnDevNode;
|
|
pDesc->wVxdId = 0;
|
|
pDesc->wReserved = 0;
|
|
pDesc->ulDeviceNum = This->wDevID;
|
|
pDesc->dwHeapType = DSDHEAP_NOHEAP;
|
|
pDesc->pvDirectDrawHeap = NULL;
|
|
pDesc->dwMemStartAddress = 0xDEAD0000;
|
|
pDesc->dwMemEndAddress = 0xDEAF0000;
|
|
pDesc->dwMemAllocExtra = 0;
|
|
pDesc->pvReserved1 = NULL;
|
|
pDesc->pvReserved2 = NULL;
|
|
return DS_OK;
|
|
}
|
|
|
|
static HRESULT WINAPI IDsCaptureDriverImpl_Open(PIDSCDRIVER iface)
|
|
{
|
|
HRESULT hr = S_OK;
|
|
IDsCaptureDriverImpl *This = (IDsCaptureDriverImpl *)iface;
|
|
int err=0;
|
|
snd_pcm_t *pcm = NULL;
|
|
snd_pcm_hw_params_t *hw_params;
|
|
|
|
/* While this is not really needed, it is a good idea to do this,
|
|
* to see if sound can be initialized */
|
|
|
|
hw_params = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, snd_pcm_hw_params_sizeof());
|
|
if (!hw_params)
|
|
{
|
|
hr = DSERR_OUTOFMEMORY;
|
|
WARN("--> %08x\n", hr);
|
|
return hr;
|
|
}
|
|
|
|
err = snd_pcm_open(&pcm, WInDev[This->wDevID].pcmname, SND_PCM_STREAM_CAPTURE, SND_PCM_NONBLOCK);
|
|
if (err < 0) goto err;
|
|
err = snd_pcm_hw_params_any(pcm, hw_params);
|
|
if (err < 0) goto err;
|
|
err = snd_pcm_hw_params_set_access (pcm, hw_params, SND_PCM_ACCESS_MMAP_INTERLEAVED);
|
|
if (err < 0)
|
|
{
|
|
err = snd_pcm_hw_params_set_access (pcm, hw_params, SND_PCM_ACCESS_RW_INTERLEAVED);
|
|
if (err < 0) goto err;
|
|
}
|
|
|
|
TRACE("Success\n");
|
|
snd_pcm_close(pcm);
|
|
HeapFree(GetProcessHeap(), 0, hw_params);
|
|
return hr;
|
|
|
|
err:
|
|
hr = DSERR_GENERIC;
|
|
WARN("Failed to open device: %s\n", snd_strerror(err));
|
|
if (pcm)
|
|
snd_pcm_close(pcm);
|
|
HeapFree(GetProcessHeap(), 0, hw_params);
|
|
WARN("--> %08x\n", hr);
|
|
return hr;
|
|
}
|
|
|
|
static HRESULT WINAPI IDsCaptureDriverImpl_Close(PIDSCDRIVER iface)
|
|
{
|
|
IDsCaptureDriverImpl *This = (IDsCaptureDriverImpl *)iface;
|
|
TRACE("(%p) stub, harmless\n",This);
|
|
return DS_OK;
|
|
}
|
|
|
|
static HRESULT WINAPI IDsCaptureDriverImpl_GetCaps(PIDSCDRIVER iface, PDSCDRIVERCAPS pCaps)
|
|
{
|
|
IDsCaptureDriverImpl *This = (IDsCaptureDriverImpl *)iface;
|
|
WINE_WAVEDEV *wwi = &WInDev[This->wDevID];
|
|
TRACE("(%p,%p)\n",iface,pCaps);
|
|
pCaps->dwSize = sizeof(DSCDRIVERCAPS);
|
|
pCaps->dwFlags = wwi->ds_caps.dwFlags;
|
|
pCaps->dwFormats = wwi->incaps.dwFormats;
|
|
pCaps->dwChannels = wwi->incaps.wChannels;
|
|
return DS_OK;
|
|
}
|
|
|
|
static HRESULT WINAPI IDsCaptureDriverImpl_CreateCaptureBuffer(PIDSCDRIVER iface,
|
|
LPWAVEFORMATEX pwfx,
|
|
DWORD dwFlags, DWORD dwCardAddress,
|
|
LPDWORD pdwcbBufferSize,
|
|
LPBYTE *ppbBuffer,
|
|
LPVOID *ppvObj)
|
|
{
|
|
IDsCaptureDriverImpl *This = (IDsCaptureDriverImpl *)iface;
|
|
IDsCaptureDriverBufferImpl** ippdsdb = (IDsCaptureDriverBufferImpl**)ppvObj;
|
|
HRESULT err;
|
|
|
|
TRACE("(%p,%p,%x,%x)\n",iface,pwfx,dwFlags,dwCardAddress);
|
|
|
|
if (This->capture_buffer)
|
|
return DSERR_ALLOCATED;
|
|
|
|
This->capture_buffer = *ippdsdb = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(IDsCaptureDriverBufferImpl));
|
|
if (*ippdsdb == NULL)
|
|
return DSERR_OUTOFMEMORY;
|
|
|
|
(*ippdsdb)->hw_params = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, snd_pcm_hw_params_sizeof());
|
|
(*ippdsdb)->sw_params = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, snd_pcm_sw_params_sizeof());
|
|
(*ippdsdb)->presented_buffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, *pdwcbBufferSize);
|
|
if (!(*ippdsdb)->hw_params || !(*ippdsdb)->sw_params || !(*ippdsdb)->presented_buffer)
|
|
{
|
|
HeapFree(GetProcessHeap(), 0, (*ippdsdb)->sw_params);
|
|
HeapFree(GetProcessHeap(), 0, (*ippdsdb)->hw_params);
|
|
HeapFree(GetProcessHeap(), 0, (*ippdsdb)->presented_buffer);
|
|
return DSERR_OUTOFMEMORY;
|
|
}
|
|
(*ippdsdb)->lpVtbl = &dsdbvt;
|
|
(*ippdsdb)->ref = 1;
|
|
(*ippdsdb)->drv = This;
|
|
(*ippdsdb)->mmap_buflen_bytes = *pdwcbBufferSize;
|
|
InitializeCriticalSection(&(*ippdsdb)->pcm_crst);
|
|
(*ippdsdb)->pcm_crst.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": ALSA_DSCAPTURE.pcm_crst");
|
|
|
|
/* SetFormat initialises pcm */
|
|
err = IDsDriverBuffer_SetFormat((IDsDriverBuffer*)*ppvObj, pwfx);
|
|
if (FAILED(err))
|
|
{
|
|
WARN("Error occurred: %08x\n", err);
|
|
goto err;
|
|
}
|
|
*ppbBuffer = (*ippdsdb)->presented_buffer;
|
|
|
|
/* buffer is ready to go */
|
|
TRACE("buffer created at %p\n", *ippdsdb);
|
|
return err;
|
|
|
|
err:
|
|
HeapFree(GetProcessHeap(), 0, (*ippdsdb)->presented_buffer);
|
|
HeapFree(GetProcessHeap(), 0, (*ippdsdb)->sw_params);
|
|
HeapFree(GetProcessHeap(), 0, (*ippdsdb)->hw_params);
|
|
HeapFree(GetProcessHeap(), 0, *ippdsdb);
|
|
*ippdsdb = NULL;
|
|
return err;
|
|
}
|
|
|
|
static const IDsCaptureDriverVtbl dscdvt =
|
|
{
|
|
IDsCaptureDriverImpl_QueryInterface,
|
|
IDsCaptureDriverImpl_AddRef,
|
|
IDsCaptureDriverImpl_Release,
|
|
IDsCaptureDriverImpl_GetDriverDesc,
|
|
IDsCaptureDriverImpl_Open,
|
|
IDsCaptureDriverImpl_Close,
|
|
IDsCaptureDriverImpl_GetCaps,
|
|
IDsCaptureDriverImpl_CreateCaptureBuffer
|
|
};
|
|
|
|
/**************************************************************************
|
|
* widDsCreate [internal]
|
|
*/
|
|
DWORD widDsCreate(UINT wDevID, PIDSCDRIVER* drv)
|
|
{
|
|
IDsCaptureDriverImpl** idrv = (IDsCaptureDriverImpl**)drv;
|
|
TRACE("(%d,%p)\n",wDevID,drv);
|
|
|
|
*idrv = HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,sizeof(IDsCaptureDriverImpl));
|
|
if (!*idrv)
|
|
return MMSYSERR_NOMEM;
|
|
(*idrv)->lpVtbl = &dscdvt;
|
|
(*idrv)->ref = 1;
|
|
|
|
(*idrv)->wDevID = wDevID;
|
|
return MMSYSERR_NOERROR;
|
|
}
|
|
|
|
/**************************************************************************
|
|
* widDsDesc [internal]
|
|
*/
|
|
DWORD widDsDesc(UINT wDevID, PDSDRIVERDESC desc)
|
|
{
|
|
*desc = WInDev[wDevID].ds_desc;
|
|
return MMSYSERR_NOERROR;
|
|
}
|