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wine/dlls/winealsa.drv/alsa.c

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/*
* Wine Driver for ALSA
*
* Copyright 2002 Eric Pouech
* Copyright 2007 Maarten Lankhorst
*
* This file has a few shared generic subroutines shared among the alsa
* implementation.
*
* 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
*/
#include "config.h"
#include <stdarg.h>
#include "windef.h"
#include "winbase.h"
#include "wingdi.h"
#include "winuser.h"
#include "mmddk.h"
#include "ks.h"
#include "guiddef.h"
#include "ksmedia.h"
#include "alsa.h"
#ifdef HAVE_ALSA
#include "wine/library.h"
#include "wine/unicode.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(alsa);
/* unless someone makes a wineserver kernel module, Unix pipes are faster than win32 events */
#define USE_PIPE_SYNC
#ifdef USE_PIPE_SYNC
#define INIT_OMR(omr) do { if (pipe(omr->msg_pipe) < 0) { omr->msg_pipe[0] = omr->msg_pipe[1] = -1; } } while (0)
#define CLOSE_OMR(omr) do { close(omr->msg_pipe[0]); close(omr->msg_pipe[1]); } while (0)
#define SIGNAL_OMR(omr) do { int x = 0; write((omr)->msg_pipe[1], &x, sizeof(x)); } while (0)
#define CLEAR_OMR(omr) do { int x = 0; read((omr)->msg_pipe[0], &x, sizeof(x)); } while (0)
#define RESET_OMR(omr) do { } while (0)
#define WAIT_OMR(omr, sleep) \
do { struct pollfd pfd; pfd.fd = (omr)->msg_pipe[0]; \
pfd.events = POLLIN; poll(&pfd, 1, sleep); } while (0)
#else
#define INIT_OMR(omr) do { omr->msg_event = CreateEventW(NULL, FALSE, FALSE, NULL); } while (0)
#define CLOSE_OMR(omr) do { CloseHandle(omr->msg_event); } while (0)
#define SIGNAL_OMR(omr) do { SetEvent((omr)->msg_event); } while (0)
#define CLEAR_OMR(omr) do { } while (0)
#define RESET_OMR(omr) do { ResetEvent((omr)->msg_event); } while (0)
#define WAIT_OMR(omr, sleep) \
do { WaitForSingleObject((omr)->msg_event, sleep); } while (0)
#endif
#define ALSA_RING_BUFFER_INCREMENT 64
/******************************************************************
* ALSA_InitRingMessage
*
* Initialize the ring of messages for passing between driver's caller and playback/record
* thread
*/
int ALSA_InitRingMessage(ALSA_MSG_RING* omr)
{
omr->msg_toget = 0;
omr->msg_tosave = 0;
INIT_OMR(omr);
omr->ring_buffer_size = ALSA_RING_BUFFER_INCREMENT;
omr->messages = HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,omr->ring_buffer_size * sizeof(ALSA_MSG));
InitializeCriticalSection(&omr->msg_crst);
omr->msg_crst.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": ALSA_MSG_RING.msg_crst");
return 0;
}
/******************************************************************
* ALSA_DestroyRingMessage
*
*/
int ALSA_DestroyRingMessage(ALSA_MSG_RING* omr)
{
CLOSE_OMR(omr);
HeapFree(GetProcessHeap(),0,omr->messages);
omr->ring_buffer_size = 0;
omr->msg_crst.DebugInfo->Spare[0] = 0;
DeleteCriticalSection(&omr->msg_crst);
return 0;
}
/******************************************************************
* ALSA_ResetRingMessage
*
*/
void ALSA_ResetRingMessage(ALSA_MSG_RING* omr)
{
RESET_OMR(omr);
}
/******************************************************************
* ALSA_WaitRingMessage
*
*/
void ALSA_WaitRingMessage(ALSA_MSG_RING* omr, DWORD sleep)
{
WAIT_OMR(omr, sleep);
}
/******************************************************************
* ALSA_AddRingMessage
*
* Inserts a new message into the ring (should be called from DriverProc derivated routines)
*/
int ALSA_AddRingMessage(ALSA_MSG_RING* omr, enum win_wm_message msg, DWORD param, BOOL wait)
{
HANDLE hEvent = INVALID_HANDLE_VALUE;
EnterCriticalSection(&omr->msg_crst);
if ((omr->msg_toget == ((omr->msg_tosave + 1) % omr->ring_buffer_size)))
{
int old_ring_buffer_size = omr->ring_buffer_size;
omr->ring_buffer_size += ALSA_RING_BUFFER_INCREMENT;
omr->messages = HeapReAlloc(GetProcessHeap(),0,omr->messages, omr->ring_buffer_size * sizeof(ALSA_MSG));
/* Now we need to rearrange the ring buffer so that the new
buffers just allocated are in between omr->msg_tosave and
omr->msg_toget.
*/
if (omr->msg_tosave < omr->msg_toget)
{
memmove(&(omr->messages[omr->msg_toget + ALSA_RING_BUFFER_INCREMENT]),
&(omr->messages[omr->msg_toget]),
sizeof(ALSA_MSG)*(old_ring_buffer_size - omr->msg_toget)
);
omr->msg_toget += ALSA_RING_BUFFER_INCREMENT;
}
}
if (wait)
{
hEvent = CreateEventW(NULL, FALSE, FALSE, NULL);
if (hEvent == INVALID_HANDLE_VALUE)
{
ERR("can't create event !?\n");
LeaveCriticalSection(&omr->msg_crst);
return 0;
}
if (omr->msg_toget != omr->msg_tosave && omr->messages[omr->msg_toget].msg != WINE_WM_HEADER)
FIXME("two fast messages in the queue!!!! toget = %d(%s), tosave=%d(%s)\n",
omr->msg_toget,ALSA_getCmdString(omr->messages[omr->msg_toget].msg),
omr->msg_tosave,ALSA_getCmdString(omr->messages[omr->msg_tosave].msg));
/* fast messages have to be added at the start of the queue */
omr->msg_toget = (omr->msg_toget + omr->ring_buffer_size - 1) % omr->ring_buffer_size;
omr->messages[omr->msg_toget].msg = msg;
omr->messages[omr->msg_toget].param = param;
omr->messages[omr->msg_toget].hEvent = hEvent;
}
else
{
omr->messages[omr->msg_tosave].msg = msg;
omr->messages[omr->msg_tosave].param = param;
omr->messages[omr->msg_tosave].hEvent = INVALID_HANDLE_VALUE;
omr->msg_tosave = (omr->msg_tosave + 1) % omr->ring_buffer_size;
}
LeaveCriticalSection(&omr->msg_crst);
/* signal a new message */
SIGNAL_OMR(omr);
if (wait)
{
/* wait for playback/record thread to have processed the message */
WaitForSingleObject(hEvent, INFINITE);
CloseHandle(hEvent);
}
return 1;
}
/******************************************************************
* ALSA_RetrieveRingMessage
*
* Get a message from the ring. Should be called by the playback/record thread.
*/
int ALSA_RetrieveRingMessage(ALSA_MSG_RING* omr,
enum win_wm_message *msg, DWORD *param, HANDLE *hEvent)
{
EnterCriticalSection(&omr->msg_crst);
if (omr->msg_toget == omr->msg_tosave) /* buffer empty ? */
{
LeaveCriticalSection(&omr->msg_crst);
return 0;
}
*msg = omr->messages[omr->msg_toget].msg;
omr->messages[omr->msg_toget].msg = 0;
*param = omr->messages[omr->msg_toget].param;
*hEvent = omr->messages[omr->msg_toget].hEvent;
omr->msg_toget = (omr->msg_toget + 1) % omr->ring_buffer_size;
CLEAR_OMR(omr);
LeaveCriticalSection(&omr->msg_crst);
return 1;
}
/******************************************************************
* ALSA_PeekRingMessage
*
* Peek at a message from the ring but do not remove it.
* Should be called by the playback/record thread.
*/
int ALSA_PeekRingMessage(ALSA_MSG_RING* omr,
enum win_wm_message *msg,
DWORD *param, HANDLE *hEvent)
{
EnterCriticalSection(&omr->msg_crst);
if (omr->msg_toget == omr->msg_tosave) /* buffer empty ? */
{
LeaveCriticalSection(&omr->msg_crst);
return 0;
}
*msg = omr->messages[omr->msg_toget].msg;
*param = omr->messages[omr->msg_toget].param;
*hEvent = omr->messages[omr->msg_toget].hEvent;
LeaveCriticalSection(&omr->msg_crst);
return 1;
}
/*======================================================================*
* Utility functions *
*======================================================================*/
/* These strings used only for tracing */
const char * ALSA_getCmdString(enum win_wm_message msg)
{
static char unknown[32];
#define MSG_TO_STR(x) case x: return #x
switch(msg) {
MSG_TO_STR(WINE_WM_PAUSING);
MSG_TO_STR(WINE_WM_RESTARTING);
MSG_TO_STR(WINE_WM_RESETTING);
MSG_TO_STR(WINE_WM_HEADER);
MSG_TO_STR(WINE_WM_UPDATE);
MSG_TO_STR(WINE_WM_BREAKLOOP);
MSG_TO_STR(WINE_WM_CLOSING);
MSG_TO_STR(WINE_WM_STARTING);
MSG_TO_STR(WINE_WM_STOPPING);
}
#undef MSG_TO_STR
sprintf(unknown, "UNKNOWN(0x%08x)", msg);
return unknown;
}
const char * ALSA_getMessage(UINT msg)
{
static char unknown[32];
#define MSG_TO_STR(x) case x: return #x
switch(msg) {
MSG_TO_STR(DRVM_INIT);
MSG_TO_STR(DRVM_EXIT);
MSG_TO_STR(DRVM_ENABLE);
MSG_TO_STR(DRVM_DISABLE);
MSG_TO_STR(WIDM_OPEN);
MSG_TO_STR(WIDM_CLOSE);
MSG_TO_STR(WIDM_ADDBUFFER);
MSG_TO_STR(WIDM_PREPARE);
MSG_TO_STR(WIDM_UNPREPARE);
MSG_TO_STR(WIDM_GETDEVCAPS);
MSG_TO_STR(WIDM_GETNUMDEVS);
MSG_TO_STR(WIDM_GETPOS);
MSG_TO_STR(WIDM_RESET);
MSG_TO_STR(WIDM_START);
MSG_TO_STR(WIDM_STOP);
MSG_TO_STR(WODM_OPEN);
MSG_TO_STR(WODM_CLOSE);
MSG_TO_STR(WODM_WRITE);
MSG_TO_STR(WODM_PAUSE);
MSG_TO_STR(WODM_GETPOS);
MSG_TO_STR(WODM_BREAKLOOP);
MSG_TO_STR(WODM_PREPARE);
MSG_TO_STR(WODM_UNPREPARE);
MSG_TO_STR(WODM_GETDEVCAPS);
MSG_TO_STR(WODM_GETNUMDEVS);
MSG_TO_STR(WODM_GETPITCH);
MSG_TO_STR(WODM_SETPITCH);
MSG_TO_STR(WODM_GETPLAYBACKRATE);
MSG_TO_STR(WODM_SETPLAYBACKRATE);
MSG_TO_STR(WODM_GETVOLUME);
MSG_TO_STR(WODM_SETVOLUME);
MSG_TO_STR(WODM_RESTART);
MSG_TO_STR(WODM_RESET);
MSG_TO_STR(DRV_QUERYDEVICEINTERFACESIZE);
MSG_TO_STR(DRV_QUERYDEVICEINTERFACE);
MSG_TO_STR(DRV_QUERYDSOUNDIFACE);
MSG_TO_STR(DRV_QUERYDSOUNDDESC);
}
#undef MSG_TO_STR
sprintf(unknown, "UNKNOWN(0x%04x)", msg);
return unknown;
}
const char * ALSA_getFormat(WORD wFormatTag)
{
static char unknown[32];
#define FMT_TO_STR(x) case x: return #x
switch(wFormatTag) {
FMT_TO_STR(WAVE_FORMAT_PCM);
FMT_TO_STR(WAVE_FORMAT_EXTENSIBLE);
FMT_TO_STR(WAVE_FORMAT_MULAW);
FMT_TO_STR(WAVE_FORMAT_ALAW);
FMT_TO_STR(WAVE_FORMAT_ADPCM);
}
#undef FMT_TO_STR
sprintf(unknown, "UNKNOWN(0x%04x)", wFormatTag);
return unknown;
}
/* Allow 1% deviation for sample rates (some ES137x cards) */
BOOL ALSA_NearMatch(int rate1, int rate2)
{
return (((100 * (rate1 - rate2)) / rate1) == 0);
}
DWORD ALSA_bytes_to_mmtime(LPMMTIME lpTime, DWORD position, WAVEFORMATPCMEX* format)
{
TRACE("wType=%04X wBitsPerSample=%u nSamplesPerSec=%u nChannels=%u nAvgBytesPerSec=%u\n",
lpTime->wType, format->Format.wBitsPerSample, format->Format.nSamplesPerSec,
format->Format.nChannels, format->Format.nAvgBytesPerSec);
TRACE("Position in bytes=%u\n", position);
switch (lpTime->wType) {
case TIME_SAMPLES:
lpTime->u.sample = position / (format->Format.wBitsPerSample / 8 * format->Format.nChannels);
TRACE("TIME_SAMPLES=%u\n", lpTime->u.sample);
break;
case TIME_MS:
lpTime->u.ms = 1000.0 * position / (format->Format.wBitsPerSample / 8 * format->Format.nChannels * format->Format.nSamplesPerSec);
TRACE("TIME_MS=%u\n", lpTime->u.ms);
break;
case TIME_SMPTE:
lpTime->u.smpte.fps = 30;
position = position / (format->Format.wBitsPerSample / 8 * format->Format.nChannels);
position += (format->Format.nSamplesPerSec / lpTime->u.smpte.fps) - 1; /* round up */
lpTime->u.smpte.sec = position / format->Format.nSamplesPerSec;
position -= lpTime->u.smpte.sec * format->Format.nSamplesPerSec;
lpTime->u.smpte.min = lpTime->u.smpte.sec / 60;
lpTime->u.smpte.sec -= 60 * lpTime->u.smpte.min;
lpTime->u.smpte.hour = lpTime->u.smpte.min / 60;
lpTime->u.smpte.min -= 60 * lpTime->u.smpte.hour;
lpTime->u.smpte.fps = 30;
lpTime->u.smpte.frame = position * lpTime->u.smpte.fps / format->Format.nSamplesPerSec;
TRACE("TIME_SMPTE=%02u:%02u:%02u:%02u\n",
lpTime->u.smpte.hour, lpTime->u.smpte.min,
lpTime->u.smpte.sec, lpTime->u.smpte.frame);
break;
default:
WARN("Format %d not supported, using TIME_BYTES !\n", lpTime->wType);
lpTime->wType = TIME_BYTES;
/* fall through */
case TIME_BYTES:
lpTime->u.cb = position;
TRACE("TIME_BYTES=%u\n", lpTime->u.cb);
break;
}
return MMSYSERR_NOERROR;
}
void ALSA_copyFormat(LPWAVEFORMATEX wf1, LPWAVEFORMATPCMEX wf2)
{
unsigned int iLength;
ZeroMemory(wf2, sizeof(wf2));
if (wf1->wFormatTag == WAVE_FORMAT_PCM)
iLength = sizeof(PCMWAVEFORMAT);
else if (wf1->wFormatTag == WAVE_FORMAT_EXTENSIBLE)
iLength = sizeof(WAVEFORMATPCMEX);
else
iLength = sizeof(WAVEFORMATEX) + wf1->cbSize;
if (iLength > sizeof(WAVEFORMATPCMEX)) {
ERR("calculated %u bytes, capping to %u bytes\n", iLength, sizeof(WAVEFORMATPCMEX));
iLength = sizeof(WAVEFORMATPCMEX);
}
memcpy(wf2, wf1, iLength);
}
BOOL ALSA_supportedFormat(LPWAVEFORMATEX wf)
{
TRACE("(%p)\n",wf);
if (wf->nSamplesPerSec<DSBFREQUENCY_MIN||wf->nSamplesPerSec>DSBFREQUENCY_MAX)
return FALSE;
if (wf->wFormatTag == WAVE_FORMAT_PCM) {
if (wf->nChannels==1||wf->nChannels==2) {
if (wf->wBitsPerSample==8||wf->wBitsPerSample==16)
return TRUE;
}
} else if (wf->wFormatTag == WAVE_FORMAT_EXTENSIBLE) {
WAVEFORMATEXTENSIBLE * wfex = (WAVEFORMATEXTENSIBLE *)wf;
if (wf->cbSize == 22 &&
(IsEqualGUID(&wfex->SubFormat, &KSDATAFORMAT_SUBTYPE_PCM) ||
IsEqualGUID(&wfex->SubFormat, &KSDATAFORMAT_SUBTYPE_IEEE_FLOAT))) {
if (wf->nChannels>=1 && wf->nChannels<=6) {
if (wf->wBitsPerSample==wfex->Samples.wValidBitsPerSample) {
if (wf->wBitsPerSample==8||wf->wBitsPerSample==16||
wf->wBitsPerSample==24||wf->wBitsPerSample==32) {
return TRUE;
}
} else
WARN("wBitsPerSample != wValidBitsPerSample not supported yet\n");
}
} else
WARN("only KSDATAFORMAT_SUBTYPE_PCM and KSDATAFORMAT_SUBTYPE_IEEE_FLOAT "
"supported\n");
} else if (wf->wFormatTag == WAVE_FORMAT_MULAW || wf->wFormatTag == WAVE_FORMAT_ALAW) {
if (wf->wBitsPerSample==8)
return TRUE;
else
ERR("WAVE_FORMAT_MULAW and WAVE_FORMAT_ALAW wBitsPerSample must = 8\n");
} else if (wf->wFormatTag == WAVE_FORMAT_ADPCM) {
if (wf->wBitsPerSample==4)
return TRUE;
else
ERR("WAVE_FORMAT_ADPCM wBitsPerSample must = 4\n");
} else
WARN("only WAVE_FORMAT_PCM and WAVE_FORMAT_EXTENSIBLE supported\n");
return FALSE;
}
/*======================================================================*
* Low level WAVE implementation *
*======================================================================*/
/**************************************************************************
* ALSA_CheckSetVolume [internal]
*
* Helper function for Alsa volume queries. This tries to simplify
* the process of managing the volume. All parameters are optional
* (pass NULL to ignore or not use).
* Return values are MMSYSERR_NOERROR on success, or !0 on failure;
* error codes are normalized into the possible documented return
* values from waveOutGetVolume.
*/
int ALSA_CheckSetVolume(snd_hctl_t *hctl, int *out_left, int *out_right,
int *out_min, int *out_max, int *out_step,
int *new_left, int *new_right)
{
int rc = MMSYSERR_NOERROR;
int value_count = 0;
snd_hctl_elem_t * elem = NULL;
snd_ctl_elem_info_t * eleminfop = NULL;
snd_ctl_elem_value_t * elemvaluep = NULL;
snd_ctl_elem_id_t * elemidp = NULL;
#define EXIT_ON_ERROR(f,txt,exitcode) do \
{ \
int err; \
if ( (err = (f) ) < 0) \
{ \
ERR(txt " failed: %s\n", snd_strerror(err)); \
rc = exitcode; \
goto out; \
} \
} while(0)
if (! hctl)
return MMSYSERR_NOTSUPPORTED;
/* Allocate areas to return information about the volume */
EXIT_ON_ERROR(snd_ctl_elem_id_malloc(&elemidp), "snd_ctl_elem_id_malloc", MMSYSERR_NOMEM);
EXIT_ON_ERROR(snd_ctl_elem_value_malloc (&elemvaluep), "snd_ctl_elem_value_malloc", MMSYSERR_NOMEM);
EXIT_ON_ERROR(snd_ctl_elem_info_malloc (&eleminfop), "snd_ctl_elem_info_malloc", MMSYSERR_NOMEM);
snd_ctl_elem_id_clear(elemidp);
snd_ctl_elem_value_clear(elemvaluep);
snd_ctl_elem_info_clear(eleminfop);
/* Setup and find an element id that exactly matches the characteristic we want
** FIXME: It is probably short sighted to hard code and fixate on PCM Playback Volume */
snd_ctl_elem_id_set_name(elemidp, "PCM Playback Volume");
snd_ctl_elem_id_set_interface(elemidp, SND_CTL_ELEM_IFACE_MIXER);
elem = snd_hctl_find_elem(hctl, elemidp);
if (elem)
{
/* Read and return volume information */
EXIT_ON_ERROR(snd_hctl_elem_info(elem, eleminfop), "snd_hctl_elem_info", MMSYSERR_NOTSUPPORTED);
value_count = snd_ctl_elem_info_get_count(eleminfop);
if (out_min || out_max || out_step)
{
if (!snd_ctl_elem_info_is_readable(eleminfop))
{
ERR("snd_ctl_elem_info_is_readable returned false; cannot return info\n");
rc = MMSYSERR_NOTSUPPORTED;
goto out;
}
if (out_min)
*out_min = snd_ctl_elem_info_get_min(eleminfop);
if (out_max)
*out_max = snd_ctl_elem_info_get_max(eleminfop);
if (out_step)
*out_step = snd_ctl_elem_info_get_step(eleminfop);
}
if (out_left || out_right)
{
EXIT_ON_ERROR(snd_hctl_elem_read(elem, elemvaluep), "snd_hctl_elem_read", MMSYSERR_NOTSUPPORTED);
if (out_left)
*out_left = snd_ctl_elem_value_get_integer(elemvaluep, 0);
if (out_right)
{
if (value_count == 1)
*out_right = snd_ctl_elem_value_get_integer(elemvaluep, 0);
else if (value_count == 2)
*out_right = snd_ctl_elem_value_get_integer(elemvaluep, 1);
else
{
ERR("Unexpected value count %d from snd_ctl_elem_info_get_count while getting volume info\n", value_count);
rc = -1;
goto out;
}
}
}
/* Set the volume */
if (new_left || new_right)
{
EXIT_ON_ERROR(snd_hctl_elem_read(elem, elemvaluep), "snd_hctl_elem_read", MMSYSERR_NOTSUPPORTED);
if (new_left)
snd_ctl_elem_value_set_integer(elemvaluep, 0, *new_left);
if (new_right)
{
if (value_count == 1)
snd_ctl_elem_value_set_integer(elemvaluep, 0, *new_right);
else if (value_count == 2)
snd_ctl_elem_value_set_integer(elemvaluep, 1, *new_right);
else
{
ERR("Unexpected value count %d from snd_ctl_elem_info_get_count while setting volume info\n", value_count);
rc = -1;
goto out;
}
}
EXIT_ON_ERROR(snd_hctl_elem_write(elem, elemvaluep), "snd_hctl_elem_write", MMSYSERR_NOTSUPPORTED);
}
}
else
{
ERR("Could not find 'PCM Playback Volume' element\n");
rc = MMSYSERR_NOTSUPPORTED;
}
#undef EXIT_ON_ERROR
out:
if (elemvaluep)
snd_ctl_elem_value_free(elemvaluep);
if (eleminfop)
snd_ctl_elem_info_free(eleminfop);
if (elemidp)
snd_ctl_elem_id_free(elemidp);
return rc;
}
/**************************************************************************
* ALSA_XRUNRecovery [internal]
*
* used to recovery from XRUN errors (buffer underflow/overflow)
*/
int ALSA_XRUNRecovery(WINE_WAVEDEV * wwo, int err)
{
if (err == -EPIPE) { /* under-run */
err = snd_pcm_prepare(wwo->pcm);
if (err < 0)
ERR( "underrun recovery failed. prepare failed: %s\n", snd_strerror(err));
return 0;
} else if (err == -ESTRPIPE) {
while ((err = snd_pcm_resume(wwo->pcm)) == -EAGAIN)
sleep(1); /* wait until the suspend flag is released */
if (err < 0) {
err = snd_pcm_prepare(wwo->pcm);
if (err < 0)
ERR("recovery from suspend failed, prepare failed: %s\n", snd_strerror(err));
}
return 0;
}
return err;
}
/**************************************************************************
* ALSA_TraceParameters [internal]
*
* used to trace format changes, hw and sw parameters
*/
void ALSA_TraceParameters(snd_pcm_hw_params_t * hw_params, snd_pcm_sw_params_t * sw, int full)
{
int err;
snd_pcm_format_t format;
snd_pcm_access_t access;
err = snd_pcm_hw_params_get_access(hw_params, &access);
err = snd_pcm_hw_params_get_format(hw_params, &format);
#define X(x) ((x)? "true" : "false")
if (full)
TRACE("FLAGS: sampleres=%s overrng=%s pause=%s resume=%s syncstart=%s batch=%s block=%s double=%s "
"halfd=%s joint=%s\n",
X(snd_pcm_hw_params_can_mmap_sample_resolution(hw_params)),
X(snd_pcm_hw_params_can_overrange(hw_params)),
X(snd_pcm_hw_params_can_pause(hw_params)),
X(snd_pcm_hw_params_can_resume(hw_params)),
X(snd_pcm_hw_params_can_sync_start(hw_params)),
X(snd_pcm_hw_params_is_batch(hw_params)),
X(snd_pcm_hw_params_is_block_transfer(hw_params)),
X(snd_pcm_hw_params_is_double(hw_params)),
X(snd_pcm_hw_params_is_half_duplex(hw_params)),
X(snd_pcm_hw_params_is_joint_duplex(hw_params)));
#undef X
if (access >= 0)
TRACE("access=%s\n", snd_pcm_access_name(access));
else
{
snd_pcm_access_mask_t * acmask;
snd_pcm_access_mask_alloca(&acmask);
snd_pcm_hw_params_get_access_mask(hw_params, acmask);
for ( access = SND_PCM_ACCESS_MMAP_INTERLEAVED; access <= SND_PCM_ACCESS_LAST; access++)
if (snd_pcm_access_mask_test(acmask, access))
TRACE("access=%s\n", snd_pcm_access_name(access));
}
if (format >= 0)
{
TRACE("format=%s\n", snd_pcm_format_name(format));
}
else
{
snd_pcm_format_mask_t * fmask;
snd_pcm_format_mask_alloca(&fmask);
snd_pcm_hw_params_get_format_mask(hw_params, fmask);
for ( format = SND_PCM_FORMAT_S8; format <= SND_PCM_FORMAT_LAST ; format++)
if ( snd_pcm_format_mask_test(fmask, format) )
TRACE("format=%s\n", snd_pcm_format_name(format));
}
do {
int err=0;
unsigned int val=0;
err = snd_pcm_hw_params_get_channels(hw_params, &val);
if (err<0) {
unsigned int min = 0;
unsigned int max = 0;
err = snd_pcm_hw_params_get_channels_min(hw_params, &min),
err = snd_pcm_hw_params_get_channels_max(hw_params, &max);
TRACE("channels_min=%u, channels_min_max=%u\n", min, max);
} else {
TRACE("channels=%d\n", val);
}
} while(0);
do {
int err=0;
snd_pcm_uframes_t val=0;
err = snd_pcm_hw_params_get_buffer_size(hw_params, &val);
if (err<0) {
snd_pcm_uframes_t min = 0;
snd_pcm_uframes_t max = 0;
err = snd_pcm_hw_params_get_buffer_size_min(hw_params, &min),
err = snd_pcm_hw_params_get_buffer_size_max(hw_params, &max);
TRACE("buffer_size_min=%lu, buffer_size_min_max=%lu\n", min, max);
} else {
TRACE("buffer_size=%lu\n", val);
}
} while(0);
#define X(x) do { \
int err=0; \
int dir=0; \
unsigned int val=0; \
err = snd_pcm_hw_params_get_##x(hw_params,&val, &dir); \
if (err<0) { \
unsigned int min = 0; \
unsigned int max = 0; \
err = snd_pcm_hw_params_get_##x##_min(hw_params, &min, &dir); \
err = snd_pcm_hw_params_get_##x##_max(hw_params, &max, &dir); \
TRACE(#x "_min=%u " #x "_max=%u\n", min, max); \
} else \
TRACE(#x "=%d\n", val); \
} while(0)
X(rate);
X(buffer_time);
X(periods);
do {
int err=0;
int dir=0;
snd_pcm_uframes_t val=0;
err = snd_pcm_hw_params_get_period_size(hw_params, &val, &dir);
if (err<0) {
snd_pcm_uframes_t min = 0;
snd_pcm_uframes_t max = 0;
err = snd_pcm_hw_params_get_period_size_min(hw_params, &min, &dir),
err = snd_pcm_hw_params_get_period_size_max(hw_params, &max, &dir);
TRACE("period_size_min=%lu, period_size_min_max=%lu\n", min, max);
} else {
TRACE("period_size=%lu\n", val);
}
} while(0);
X(period_time);
X(tick_time);
#undef X
if (!sw)
return;
}
#endif
/**************************************************************************
* DriverProc (WINEALSA.@)
*/
LRESULT CALLBACK ALSA_DriverProc(DWORD_PTR dwDevID, HDRVR hDriv, UINT wMsg,
LPARAM dwParam1, LPARAM dwParam2)
{
/* EPP TRACE("(%08lX, %04X, %08lX, %08lX, %08lX)\n", */
/* EPP dwDevID, hDriv, wMsg, dwParam1, dwParam2); */
switch(wMsg) {
#ifdef HAVE_ALSA
case DRV_LOAD: ALSA_WaveInit();
ALSA_MidiInit();
return 1;
case DRV_FREE: return 1;
case DRV_OPEN: return 1;
case DRV_CLOSE: return 1;
case DRV_ENABLE: return 1;
case DRV_DISABLE: return 1;
case DRV_QUERYCONFIGURE: return 1;
case DRV_CONFIGURE: MessageBoxA(0, "ALSA MultiMedia Driver !", "ALSA Driver", MB_OK); return 1;
case DRV_INSTALL: return DRVCNF_RESTART;
case DRV_REMOVE: return DRVCNF_RESTART;
#endif
default:
return DefDriverProc(dwDevID, hDriv, wMsg, dwParam1, dwParam2);
}
}
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