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Sweden-Number/dlls/winealsa.drv/dscapture.c

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/*
* Sample Wine Driver for Advanced Linux Sound System (ALSA)
* Based on version <final> of the ALSA API
*
* Copyright 2007 - Maarten Lankhorst
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
/*======================================================================*
* Low level dsound input implementation *
*======================================================================*/
#include "config.h"
#include "wine/port.h"
#include <stdlib.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include <errno.h>
#include <limits.h>
#include <fcntl.h>
#ifdef HAVE_SYS_IOCTL_H
# include <sys/ioctl.h>
#endif
#ifdef HAVE_SYS_MMAN_H
# include <sys/mman.h>
#endif
#include "windef.h"
#include "winbase.h"
#include "wingdi.h"
#include "winerror.h"
#include "winuser.h"
#include "mmddk.h"
#include "alsa.h"
#include "wine/library.h"
#include "wine/unicode.h"
#include "wine/debug.h"
#ifdef HAVE_ALSA
WINE_DEFAULT_DEBUG_CHANNEL(dsalsa);
typedef struct IDsCaptureDriverImpl IDsCaptureDriverImpl;
typedef struct IDsCaptureDriverBufferImpl IDsCaptureDriverBufferImpl;
struct IDsCaptureDriverImpl
{
/* IUnknown fields */
const IDsCaptureDriverVtbl *lpVtbl;
LONG ref;
/* IDsCaptureDriverImpl fields */
IDsCaptureDriverBufferImpl* capture_buffer;
UINT wDevID;
};
struct IDsCaptureDriverBufferImpl
{
const IDsCaptureDriverBufferVtbl *lpVtbl;
LONG ref;
IDsCaptureDriverImpl* drv;
CRITICAL_SECTION pcm_crst;
LPBYTE mmap_buffer, presented_buffer;
DWORD mmap_buflen_bytes, play_looping, mmap_ofs_bytes;
/* Note: snd_pcm_frames_to_bytes(This->pcm, mmap_buflen_frames) != mmap_buflen_bytes */
/* The actual buffer may differ in size from the wanted buffer size */
snd_pcm_t *pcm;
snd_pcm_hw_params_t *hw_params;
snd_pcm_sw_params_t *sw_params;
snd_pcm_uframes_t mmap_buflen_frames, mmap_pos;
};
#if 0
/** Convert the position an application sees into a position ALSA sees */
static snd_pcm_uframes_t fakepos_to_realpos(const IDsCaptureDriverBufferImpl* This, DWORD fakepos)
{
snd_pcm_uframes_t realpos;
if (fakepos < This->mmap_ofs_bytes)
realpos = This->mmap_buflen_bytes + fakepos - This->mmap_ofs_bytes;
else realpos = fakepos - This->mmap_ofs_bytes;
return snd_pcm_bytes_to_frames(This->pcm, realpos) % This->mmap_buflen_frames;
}
#endif
/** Convert the position ALSA sees into a position an application sees */
static DWORD realpos_to_fakepos(const IDsCaptureDriverBufferImpl* This, snd_pcm_uframes_t realpos)
{
DWORD realposb = snd_pcm_frames_to_bytes(This->pcm, realpos);
return (realposb + This->mmap_ofs_bytes) % This->mmap_buflen_bytes;
}
/** Raw copy data, with buffer wrap around */
static void CopyDataWrap(const IDsCaptureDriverBufferImpl* This, LPBYTE dest, DWORD fromwhere, DWORD copylen, DWORD buflen)
{
DWORD remainder = buflen - fromwhere;
if (remainder >= copylen)
{
CopyMemory(dest, This->mmap_buffer + fromwhere, copylen);
}
else
{
CopyMemory(dest, This->mmap_buffer + fromwhere, remainder);
copylen -= remainder;
CopyMemory(dest, This->mmap_buffer, copylen);
}
}
/** Copy data from the mmap buffer to backbuffer, taking into account all wraparounds that may occur */
static void CopyData(const IDsCaptureDriverBufferImpl* This, snd_pcm_uframes_t fromwhere, snd_pcm_uframes_t len)
{
DWORD dlen = snd_pcm_frames_to_bytes(This->pcm, len) % This->mmap_buflen_bytes;
/* Backbuffer */
DWORD ofs = realpos_to_fakepos(This, fromwhere);
DWORD remainder = This->mmap_buflen_bytes - ofs;
/* MMAP buffer */
DWORD realbuflen = snd_pcm_frames_to_bytes(This->pcm, This->mmap_buflen_frames);
DWORD realofs = snd_pcm_frames_to_bytes(This->pcm, fromwhere);
if (remainder >= dlen)
{
CopyDataWrap(This, This->presented_buffer + ofs, realofs, dlen, realbuflen);
}
else
{
CopyDataWrap(This, This->presented_buffer + ofs, realofs, remainder, realbuflen);
dlen -= remainder;
CopyDataWrap(This, This->presented_buffer, (realofs+remainder)%realbuflen, dlen, realbuflen);
}
}
/** Fill buffers, for starting and stopping
* Alsa won't start playing until everything is filled up
* This also updates mmap_pos
*
* Returns: Amount of periods in use so snd_pcm_avail_update
* doesn't have to be called up to 4x in GetPosition()
*/
static snd_pcm_uframes_t CommitAll(IDsCaptureDriverBufferImpl *This, DWORD forced)
{
const snd_pcm_channel_area_t *areas;
snd_pcm_uframes_t used;
const snd_pcm_uframes_t commitahead = This->mmap_buflen_frames;
used = This->mmap_buflen_frames - snd_pcm_avail_update(This->pcm);
TRACE("%p needs to commit to %lu, used: %lu\n", This, commitahead, used);
if (used < commitahead && (forced || This->play_looping))
{
snd_pcm_uframes_t done, putin = commitahead - used;
snd_pcm_mmap_begin(This->pcm, &areas, &This->mmap_pos, &putin);
CopyData(This, This->mmap_pos, putin);
done = snd_pcm_mmap_commit(This->pcm, This->mmap_pos, putin);
This->mmap_pos += done;
used += done;
putin = commitahead - used;
if (This->mmap_pos == This->mmap_buflen_frames && (snd_pcm_sframes_t)putin > 0 && This->play_looping)
{
snd_pcm_mmap_begin(This->pcm, &areas, &This->mmap_pos, &putin);
This->mmap_ofs_bytes += snd_pcm_frames_to_bytes(This->pcm, This->mmap_buflen_frames);
This->mmap_ofs_bytes %= This->mmap_buflen_bytes;
CopyData(This, This->mmap_pos, putin);
done = snd_pcm_mmap_commit(This->pcm, This->mmap_pos, putin);
This->mmap_pos += done;
used += done;
}
}
if (This->mmap_pos == This->mmap_buflen_frames)
{
This->mmap_ofs_bytes += snd_pcm_frames_to_bytes(This->pcm, This->mmap_buflen_frames);
This->mmap_ofs_bytes %= This->mmap_buflen_bytes;
This->mmap_pos = 0;
}
return used;
}
static void CheckXRUN(IDsCaptureDriverBufferImpl* This)
{
snd_pcm_state_t state = snd_pcm_state(This->pcm);
snd_pcm_sframes_t delay;
int err;
snd_pcm_hwsync(This->pcm);
snd_pcm_delay(This->pcm, &delay);
if ( state == SND_PCM_STATE_XRUN )
{
err = snd_pcm_prepare(This->pcm);
CommitAll(This, FALSE);
snd_pcm_start(This->pcm);
WARN("xrun occurred\n");
if ( err < 0 )
ERR("recovery from xrun failed, prepare failed: %s\n", snd_strerror(err));
}
else if ( state == SND_PCM_STATE_SUSPENDED )
{
int err = snd_pcm_resume(This->pcm);
TRACE("recovery from suspension occurred\n");
if (err < 0 && err != -EAGAIN){
err = snd_pcm_prepare(This->pcm);
if (err < 0)
ERR("recovery from suspend failed, prepare failed: %s\n", snd_strerror(err));
}
}
else if ( state != SND_PCM_STATE_RUNNING)
{
WARN("Unhandled state: %d\n", state);
}
}
/**
* Allocate the memory-mapped buffer for direct sound, and set up the
* callback.
*/
static int CreateMMAP(IDsCaptureDriverBufferImpl* pdbi)
{
snd_pcm_t *pcm = pdbi->pcm;
snd_pcm_format_t format;
snd_pcm_uframes_t frames, ofs, avail, psize, boundary;
unsigned int channels, bits_per_sample, bits_per_frame;
int err, mmap_mode;
const snd_pcm_channel_area_t *areas;
snd_pcm_hw_params_t *hw_params = pdbi->hw_params;
snd_pcm_sw_params_t *sw_params = pdbi->sw_params;
mmap_mode = snd_pcm_type(pcm);
if (mmap_mode == SND_PCM_TYPE_HW)
TRACE("mmap'd buffer is a direct hardware buffer.\n");
else if (mmap_mode == SND_PCM_TYPE_DMIX)
TRACE("mmap'd buffer is an ALSA dmix buffer\n");
else
TRACE("mmap'd buffer is an ALSA type %d buffer\n", mmap_mode);
err = snd_pcm_hw_params_get_period_size(hw_params, &psize, NULL);
err = snd_pcm_hw_params_get_format(hw_params, &format);
err = snd_pcm_hw_params_get_buffer_size(hw_params, &frames);
err = snd_pcm_hw_params_get_channels(hw_params, &channels);
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);
snd_pcm_sw_params_set_xrun_mode(pcm, sw_params, SND_PCM_XRUN_NONE);
err = snd_pcm_sw_params(pcm, sw_params);
avail = snd_pcm_avail_update(pcm);
if (avail < 0)
{
ERR("No buffer is available: %s.\n", snd_strerror(avail));
return DSERR_GENERIC;
}
err = snd_pcm_mmap_begin(pcm, &areas, &ofs, &avail);
if ( err < 0 )
{
ERR("Can't map sound device for direct access: %s\n", snd_strerror(err));
return DSERR_GENERIC;
}
err = snd_pcm_mmap_commit(pcm, ofs, 0);
pdbi->mmap_buffer = areas->addr;
TRACE("created mmap buffer of %ld frames (%d bytes) at %p\n",
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; */
FIXME("(): stub!\n");
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;
TRACE("mmap buffer %p destroyed\n", This->mmap_buffer);
This->drv->capture_buffer = NULL;
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;
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_LE; 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 = snd_pcm_bytes_to_frames(pcm, This->mmap_buflen_bytes);
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(pcm, hw_params);
err = snd_pcm_sw_params(pcm, This->sw_params);
snd_pcm_prepare(pcm);
if (This->pcm)
{
snd_pcm_drop(This->pcm);
snd_pcm_close(This->pcm);
}
This->pcm = pcm;
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)
{
hw_pptr = This->mmap_pos;
CheckXRUN(This);
}
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_wptr);
if (lpdwReadpos)
*lpdwReadpos = realpos_to_fakepos(This, hw_wptr);
LeaveCriticalSection(&This->pcm_crst);
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);
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);
/* **** */
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);
/* **** */
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);
memcpy(pDesc, &(WInDev[This->wDevID].ds_desc), sizeof(DSDRIVERDESC));
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, WOutDev[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) 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);
if (!(WInDev[wDevID].dwSupport & WAVECAPS_DIRECTSOUND))
{
WARN("Hardware accelerated capture not supported, falling back to wavein\n");
return MMSYSERR_NOTSUPPORTED;
}
*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)
{
memcpy(desc, &(WInDev[wDevID].ds_desc), sizeof(DSDRIVERDESC));
return MMSYSERR_NOERROR;
}
#endif /* HAVE_ALSA */
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