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/*
* Copyright 2010 Maarten Lankhorst for CodeWeavers
* Copyright 2011 Andrew Eikum for CodeWeavers
* Copyright 2022 Huw Davies
*
* 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
*/
#if 0
#pragma makedep unix
#endif
#include "config.h"
#include <stdarg.h>
#include <stdio.h>
#include <alsa/asoundlib.h>
#include "ntstatus.h"
#define WIN32_NO_STATUS
#include "windef.h"
#include "winbase.h"
#include "winternl.h"
#include "mmdeviceapi.h"
#include "wine/debug.h"
#include "wine/list.h"
#include "wine/unixlib.h"
#include "initguid.h"
#include "unixlib.h"
WINE_DEFAULT_DEBUG_CHANNEL(alsa);
static const WCHAR drv_keyW[] = {'S','o','f','t','w','a','r','e','\\',
'W','i','n','e','\\','D','r','i','v','e','r','s','\\',
'w','i','n','e','a','l','s','a','.','d','r','v'};
static inline void ascii_to_unicode( WCHAR *dst, const char *src, size_t len )
{
while (len--) *dst++ = (unsigned char)*src++;
}
static HKEY reg_open_key( HKEY root, const WCHAR *name, ULONG name_len )
{
UNICODE_STRING nameW = { name_len, name_len, (WCHAR *)name };
OBJECT_ATTRIBUTES attr;
HANDLE ret;
attr.Length = sizeof(attr);
attr.RootDirectory = root;
attr.ObjectName = &nameW;
attr.Attributes = 0;
attr.SecurityDescriptor = NULL;
attr.SecurityQualityOfService = NULL;
if (NtOpenKeyEx( &ret, MAXIMUM_ALLOWED, &attr, 0 )) return 0;
return ret;
}
static HKEY open_hkcu(void)
{
char buffer[256];
WCHAR bufferW[256];
DWORD_PTR sid_data[(sizeof(TOKEN_USER) + SECURITY_MAX_SID_SIZE) / sizeof(DWORD_PTR)];
DWORD i, len = sizeof(sid_data);
SID *sid;
if (NtQueryInformationToken( GetCurrentThreadEffectiveToken(), TokenUser, sid_data, len, &len ))
return 0;
sid = ((TOKEN_USER *)sid_data)->User.Sid;
len = sprintf( buffer, "\\Registry\\User\\S-%u-%u", sid->Revision,
MAKELONG( MAKEWORD( sid->IdentifierAuthority.Value[5], sid->IdentifierAuthority.Value[4] ),
MAKEWORD( sid->IdentifierAuthority.Value[3], sid->IdentifierAuthority.Value[2] )));
for (i = 0; i < sid->SubAuthorityCount; i++)
len += sprintf( buffer + len, "-%u", sid->SubAuthority[i] );
ascii_to_unicode( bufferW, buffer, len + 1 );
return reg_open_key( NULL, bufferW, len * sizeof(WCHAR) );
}
static HKEY reg_open_hkcu_key( const WCHAR *name, ULONG name_len )
{
HKEY hkcu = open_hkcu(), key;
key = reg_open_key( hkcu, name, name_len );
NtClose( hkcu );
return key;
}
ULONG reg_query_value( HKEY hkey, const WCHAR *name,
KEY_VALUE_PARTIAL_INFORMATION *info, ULONG size )
{
unsigned int name_size = name ? wcslen( name ) * sizeof(WCHAR) : 0;
UNICODE_STRING nameW = { name_size, name_size, (WCHAR *)name };
if (NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation,
info, size, &size ))
return 0;
return size - FIELD_OFFSET(KEY_VALUE_PARTIAL_INFORMATION, Data);
}
static snd_pcm_stream_t alsa_get_direction(EDataFlow flow)
{
return (flow == eRender) ? SND_PCM_STREAM_PLAYBACK : SND_PCM_STREAM_CAPTURE;
}
static WCHAR *strdupAtoW(const char *str)
{
unsigned int len;
WCHAR *ret;
if(!str) return NULL;
len = strlen(str) + 1;
ret = malloc(len * sizeof(WCHAR));
if(ret) ntdll_umbstowcs(str, len, ret, len);
return ret;
}
static BOOL alsa_try_open(const char *devnode, EDataFlow flow)
{
snd_pcm_t *handle;
int err;
TRACE("devnode: %s, flow: %d\n", devnode, flow);
if((err = snd_pcm_open(&handle, devnode, alsa_get_direction(flow), SND_PCM_NONBLOCK)) < 0){
WARN("The device \"%s\" failed to open: %d (%s).\n", devnode, err, snd_strerror(err));
return FALSE;
}
snd_pcm_close(handle);
return TRUE;
}
static WCHAR *construct_device_id(EDataFlow flow, const WCHAR *chunk1, const WCHAR *chunk2)
{
WCHAR *ret;
const WCHAR *prefix;
size_t len_wchars = 0, chunk1_len = 0, chunk2_len = 0, copied = 0, prefix_len;
static const WCHAR dashW[] = {' ','-',' ',0};
static const size_t dashW_len = ARRAY_SIZE(dashW) - 1;
static const WCHAR outW[] = {'O','u','t',':',' ',0};
static const WCHAR inW[] = {'I','n',':',' ',0};
if(flow == eRender){
prefix = outW;
prefix_len = ARRAY_SIZE(outW) - 1;
len_wchars += prefix_len;
}else{
prefix = inW;
prefix_len = ARRAY_SIZE(inW) - 1;
len_wchars += prefix_len;
}
if(chunk1){
chunk1_len = wcslen(chunk1);
len_wchars += chunk1_len;
}
if(chunk1 && chunk2)
len_wchars += dashW_len;
if(chunk2){
chunk2_len = wcslen(chunk2);
len_wchars += chunk2_len;
}
len_wchars += 1; /* NULL byte */
ret = malloc(len_wchars * sizeof(WCHAR));
memcpy(ret, prefix, prefix_len * sizeof(WCHAR));
copied += prefix_len;
if(chunk1){
memcpy(ret + copied, chunk1, chunk1_len * sizeof(WCHAR));
copied += chunk1_len;
}
if(chunk1 && chunk2){
memcpy(ret + copied, dashW, dashW_len * sizeof(WCHAR));
copied += dashW_len;
}
if(chunk2){
memcpy(ret + copied, chunk2, chunk2_len * sizeof(WCHAR));
copied += chunk2_len;
}
ret[copied] = 0;
TRACE("Enumerated device: %s\n", wine_dbgstr_w(ret));
return ret;
}
struct endpoints_info
{
unsigned int num, size;
struct endpoint *endpoints;
};
static void endpoints_add(struct endpoints_info *endpoints, WCHAR *name, char *device)
{
if(endpoints->num >= endpoints->size){
if (!endpoints->size) endpoints->size = 16;
else endpoints->size *= 2;
endpoints->endpoints = realloc(endpoints->endpoints, endpoints->size * sizeof(*endpoints->endpoints));
}
endpoints->endpoints[endpoints->num].name = name;
endpoints->endpoints[endpoints->num++].device = device;
}
static HRESULT alsa_get_card_devices(EDataFlow flow, struct endpoints_info *endpoints_info,
snd_ctl_t *ctl, int card, const WCHAR *cardname)
{
int err, device;
snd_pcm_info_t *info;
info = calloc(1, snd_pcm_info_sizeof());
if(!info)
return E_OUTOFMEMORY;
snd_pcm_info_set_subdevice(info, 0);
snd_pcm_info_set_stream(info, alsa_get_direction(flow));
device = -1;
for(err = snd_ctl_pcm_next_device(ctl, &device); device != -1 && err >= 0;
err = snd_ctl_pcm_next_device(ctl, &device)){
char devnode[32];
WCHAR *devname;
snd_pcm_info_set_device(info, device);
if((err = snd_ctl_pcm_info(ctl, info)) < 0){
if(err == -ENOENT)
/* This device doesn't have the right stream direction */
continue;
WARN("Failed to get info for card %d, device %d: %d (%s)\n",
card, device, err, snd_strerror(err));
continue;
}
sprintf(devnode, "plughw:%d,%d", card, device);
if(!alsa_try_open(devnode, flow))
continue;
devname = strdupAtoW(snd_pcm_info_get_name(info));
if(!devname){
WARN("Unable to get device name for card %d, device %d\n", card, device);
continue;
}
endpoints_add(endpoints_info, construct_device_id(flow, cardname, devname), strdup(devnode));
free(devname);
}
free(info);
if(err != 0)
WARN("Got a failure during device enumeration on card %d: %d (%s)\n",
card, err, snd_strerror(err));
return S_OK;
}
static void get_reg_devices(EDataFlow flow, struct endpoints_info *endpoints_info)
{
static const WCHAR ALSAOutputDevices[] = {'A','L','S','A','O','u','t','p','u','t','D','e','v','i','c','e','s',0};
static const WCHAR ALSAInputDevices[] = {'A','L','S','A','I','n','p','u','t','D','e','v','i','c','e','s',0};
char buffer[4096];
KEY_VALUE_PARTIAL_INFORMATION *key_info = (void *)buffer;
HKEY key;
DWORD size;
const WCHAR *value_name = (flow == eRender) ? ALSAOutputDevices : ALSAInputDevices;
/* @@ Wine registry key: HKCU\Software\Wine\Drivers\winealsa.drv */
if((key = reg_open_hkcu_key(drv_keyW, sizeof(drv_keyW)))){
if((size = reg_query_value(key, value_name, key_info, sizeof(buffer)))){
WCHAR *p = (WCHAR *)key_info->Data;
if(key_info->Type != REG_MULTI_SZ){
ERR("Registry ALSA device list value type must be REG_MULTI_SZ\n");
NtClose(key);
return;
}
while(*p){
int len = wcslen(p);
char *devname = malloc(len * 3 + 1);
ntdll_wcstoumbs(p, len + 1, devname, len * 3 + 1, FALSE);
if(alsa_try_open(devname, flow))
endpoints_add(endpoints_info, construct_device_id(flow, p, NULL), strdup(devname));
free(devname);
p += len + 1;
}
}
NtClose(key);
}
}
struct card_type {
struct list entry;
int first_card_number;
char string[1];
};
static struct list card_types = LIST_INIT(card_types);
static BOOL need_card_number(int card, const char *string)
{
struct card_type *cptr;
LIST_FOR_EACH_ENTRY(cptr, &card_types, struct card_type, entry)
{
if(!strcmp(string, cptr->string))
return card != cptr->first_card_number;
}
/* this is the first instance of string */
cptr = malloc(sizeof(struct card_type) + strlen(string));
if(!cptr)
/* Default to displaying card number if we can't track cards */
return TRUE;
cptr->first_card_number = card;
strcpy(cptr->string, string);
list_add_head(&card_types, &cptr->entry);
return FALSE;
}
static WCHAR *alsa_get_card_name(int card)
{
char *cardname;
WCHAR *ret;
int err;
if((err = snd_card_get_name(card, &cardname)) < 0){
/* FIXME: Should be localized */
WARN("Unable to get card name for ALSA device %d: %d (%s)\n", card, err, snd_strerror(err));
cardname = strdup("Unknown soundcard");
}
if(need_card_number(card, cardname)){
char *cardnameN;
/*
* For identical card names, second and subsequent instances get
* card number prefix to distinguish them (like Windows).
*/
if(asprintf(&cardnameN, "%u-%s", card, cardname) > 0){
free(cardname);
cardname = cardnameN;
}
}
ret = strdupAtoW(cardname);
free(cardname);
return ret;
}
static NTSTATUS get_endpoint_ids(void *args)
{
static const WCHAR defaultW[] = {'d','e','f','a','u','l','t',0};
struct get_endpoint_ids_params *params = args;
struct endpoints_info endpoints_info;
unsigned int i, needed, name_len, device_len;
struct endpoint *endpoint;
int err, card;
char *ptr;
card = -1;
endpoints_info.num = endpoints_info.size = 0;
endpoints_info.endpoints = NULL;
if(alsa_try_open("default", params->flow))
endpoints_add(&endpoints_info, construct_device_id(params->flow, defaultW, NULL), strdup("default"));
get_reg_devices(params->flow, &endpoints_info);
for(err = snd_card_next(&card); card != -1 && err >= 0; err = snd_card_next(&card)){
char cardpath[64];
WCHAR *cardname;
snd_ctl_t *ctl;
sprintf(cardpath, "hw:%u", card);
if((err = snd_ctl_open(&ctl, cardpath, 0)) < 0){
WARN("Unable to open ctl for ALSA device %s: %d (%s)\n", cardpath,
err, snd_strerror(err));
continue;
}
cardname = alsa_get_card_name(card);
alsa_get_card_devices(params->flow, &endpoints_info, ctl, card, cardname);
free(cardname);
snd_ctl_close(ctl);
}
if(err != 0)
WARN("Got a failure during card enumeration: %d (%s)\n", err, snd_strerror(err));
needed = endpoints_info.num * sizeof(*params->endpoints);
endpoint = params->endpoints;
ptr = (char *)(endpoint + endpoints_info.num);
for(i = 0; i < endpoints_info.num; i++){
name_len = wcslen(endpoints_info.endpoints[i].name) + 1;
device_len = strlen(endpoints_info.endpoints[i].device) + 1;
needed += name_len * sizeof(WCHAR) + ((device_len + 1) & ~1);
if(needed <= params->size){
endpoint->name = (WCHAR *)ptr;
memcpy(endpoint->name, endpoints_info.endpoints[i].name, name_len * sizeof(WCHAR));
ptr += name_len * sizeof(WCHAR);
endpoint->device = ptr;
memcpy(endpoint->device, endpoints_info.endpoints[i].device, device_len);
ptr += (device_len + 1) & ~1;
endpoint++;
}
free(endpoints_info.endpoints[i].name);
free(endpoints_info.endpoints[i].device);
}
free(endpoints_info.endpoints);
params->num = endpoints_info.num;
params->default_idx = 0;
if(needed > params->size){
params->size = needed;
params->result = HRESULT_FROM_WIN32(ERROR_INSUFFICIENT_BUFFER);
} else
params->result = S_OK;
return STATUS_SUCCESS;
}
static WAVEFORMATEXTENSIBLE *clone_format(const WAVEFORMATEX *fmt)
{
WAVEFORMATEXTENSIBLE *ret;
size_t size;
if(fmt->wFormatTag == WAVE_FORMAT_EXTENSIBLE)
size = sizeof(WAVEFORMATEXTENSIBLE);
else
size = sizeof(WAVEFORMATEX);
ret = malloc(size);
if(!ret)
return NULL;
memcpy(ret, fmt, size);
ret->Format.cbSize = size - sizeof(WAVEFORMATEX);
return ret;
}
static HRESULT alsa_open_device(const char *alsa_name, EDataFlow flow, snd_pcm_t **pcm_handle,
snd_pcm_hw_params_t **hw_params)
{
snd_pcm_stream_t pcm_stream;
int err;
if(flow == eRender)
pcm_stream = SND_PCM_STREAM_PLAYBACK;
else if(flow == eCapture)
pcm_stream = SND_PCM_STREAM_CAPTURE;
else
return E_UNEXPECTED;
err = snd_pcm_open(pcm_handle, alsa_name, pcm_stream, SND_PCM_NONBLOCK);
if(err < 0){
WARN("Unable to open PCM \"%s\": %d (%s)\n", alsa_name, err, snd_strerror(err));
switch(err){
case -EBUSY:
return AUDCLNT_E_DEVICE_IN_USE;
default:
return AUDCLNT_E_ENDPOINT_CREATE_FAILED;
}
}
*hw_params = malloc(snd_pcm_hw_params_sizeof());
if(!*hw_params){
snd_pcm_close(*pcm_handle);
return E_OUTOFMEMORY;
}
return S_OK;
}
static snd_pcm_format_t alsa_format(const WAVEFORMATEX *fmt)
{
snd_pcm_format_t format = SND_PCM_FORMAT_UNKNOWN;
const WAVEFORMATEXTENSIBLE *fmtex = (const WAVEFORMATEXTENSIBLE *)fmt;
if(fmt->wFormatTag == WAVE_FORMAT_PCM ||
(fmt->wFormatTag == WAVE_FORMAT_EXTENSIBLE &&
IsEqualGUID(&fmtex->SubFormat, &KSDATAFORMAT_SUBTYPE_PCM))){
if(fmt->wBitsPerSample == 8)
format = SND_PCM_FORMAT_U8;
else if(fmt->wBitsPerSample == 16)
format = SND_PCM_FORMAT_S16_LE;
else if(fmt->wBitsPerSample == 24)
format = SND_PCM_FORMAT_S24_3LE;
else if(fmt->wBitsPerSample == 32)
format = SND_PCM_FORMAT_S32_LE;
else
WARN("Unsupported bit depth: %u\n", fmt->wBitsPerSample);
if(fmt->wFormatTag == WAVE_FORMAT_EXTENSIBLE &&
fmt->wBitsPerSample != fmtex->Samples.wValidBitsPerSample){
if(fmtex->Samples.wValidBitsPerSample == 20 && fmt->wBitsPerSample == 24)
format = SND_PCM_FORMAT_S20_3LE;
else
WARN("Unsupported ValidBits: %u\n", fmtex->Samples.wValidBitsPerSample);
}
}else if(fmt->wFormatTag == WAVE_FORMAT_IEEE_FLOAT ||
(fmt->wFormatTag == WAVE_FORMAT_EXTENSIBLE &&
IsEqualGUID(&fmtex->SubFormat, &KSDATAFORMAT_SUBTYPE_IEEE_FLOAT))){
if(fmt->wBitsPerSample == 32)
format = SND_PCM_FORMAT_FLOAT_LE;
else if(fmt->wBitsPerSample == 64)
format = SND_PCM_FORMAT_FLOAT64_LE;
else
WARN("Unsupported float size: %u\n", fmt->wBitsPerSample);
}else
WARN("Unknown wave format: %04x\n", fmt->wFormatTag);
return format;
}
static int alsa_channel_index(DWORD flag)
{
switch(flag){
case SPEAKER_FRONT_LEFT:
return 0;
case SPEAKER_FRONT_RIGHT:
return 1;
case SPEAKER_BACK_LEFT:
return 2;
case SPEAKER_BACK_RIGHT:
return 3;
case SPEAKER_FRONT_CENTER:
return 4;
case SPEAKER_LOW_FREQUENCY:
return 5;
case SPEAKER_SIDE_LEFT:
return 6;
case SPEAKER_SIDE_RIGHT:
return 7;
}
return -1;
}
static BOOL need_remapping(const WAVEFORMATEX *fmt, int *map)
{
unsigned int i;
for(i = 0; i < fmt->nChannels; ++i){
if(map[i] != i)
return TRUE;
}
return FALSE;
}
static DWORD get_channel_mask(unsigned int channels)
{
switch(channels){
case 0:
return 0;
case 1:
return KSAUDIO_SPEAKER_MONO;
case 2:
return KSAUDIO_SPEAKER_STEREO;
case 3:
return KSAUDIO_SPEAKER_STEREO | SPEAKER_LOW_FREQUENCY;
case 4:
return KSAUDIO_SPEAKER_QUAD; /* not _SURROUND */
case 5:
return KSAUDIO_SPEAKER_QUAD | SPEAKER_LOW_FREQUENCY;
case 6:
return KSAUDIO_SPEAKER_5POINT1; /* not 5POINT1_SURROUND */
case 7:
return KSAUDIO_SPEAKER_5POINT1 | SPEAKER_BACK_CENTER;
case 8:
return KSAUDIO_SPEAKER_7POINT1_SURROUND; /* Vista deprecates 7POINT1 */
}
FIXME("Unknown speaker configuration: %u\n", channels);
return 0;
}
static HRESULT map_channels(EDataFlow flow, const WAVEFORMATEX *fmt, int *alsa_channels, int *map)
{
BOOL need_remap;
if(flow != eCapture && (fmt->wFormatTag == WAVE_FORMAT_EXTENSIBLE || fmt->nChannels > 2) ){
WAVEFORMATEXTENSIBLE *fmtex = (void*)fmt;
DWORD mask, flag = SPEAKER_FRONT_LEFT;
UINT i = 0;
if(fmt->wFormatTag == WAVE_FORMAT_EXTENSIBLE &&
fmtex->dwChannelMask != 0)
mask = fmtex->dwChannelMask;
else
mask = get_channel_mask(fmt->nChannels);
*alsa_channels = 0;
while(i < fmt->nChannels && !(flag & SPEAKER_RESERVED)){
if(mask & flag){
map[i] = alsa_channel_index(flag);
TRACE("Mapping mmdevapi channel %u (0x%x) to ALSA channel %d\n",
i, flag, map[i]);
if(map[i] >= *alsa_channels)
*alsa_channels = map[i] + 1;
++i;
}
flag <<= 1;
}
while(i < fmt->nChannels){
map[i] = *alsa_channels;
TRACE("Mapping mmdevapi channel %u to ALSA channel %d\n",
i, map[i]);
++*alsa_channels;
++i;
}
for(i = 0; i < fmt->nChannels; ++i){
if(map[i] == -1){
map[i] = *alsa_channels;
++*alsa_channels;
TRACE("Remapping mmdevapi channel %u to ALSA channel %d\n",
i, map[i]);
}
}
need_remap = need_remapping(fmt, map);
}else{
*alsa_channels = fmt->nChannels;
need_remap = FALSE;
}
TRACE("need_remapping: %u, alsa_channels: %d\n", need_remap, *alsa_channels);
return need_remap ? S_OK : S_FALSE;
}
static NTSTATUS is_format_supported(void *args)
{
struct is_format_supported_params *params = args;
const WAVEFORMATEXTENSIBLE *fmtex = (const WAVEFORMATEXTENSIBLE *)params->fmt_in;
snd_pcm_t *pcm_handle;
snd_pcm_hw_params_t *hw_params;
snd_pcm_format_mask_t *formats = NULL;
snd_pcm_format_t format;
WAVEFORMATEXTENSIBLE *closest = NULL;
unsigned int max = 0, min = 0;
int err;
int alsa_channels, alsa_channel_map[32];
params->result = S_OK;
if(!params->fmt_in || (params->share == AUDCLNT_SHAREMODE_SHARED && !params->fmt_out))
params->result = E_POINTER;
else if(params->share != AUDCLNT_SHAREMODE_SHARED && params->share != AUDCLNT_SHAREMODE_EXCLUSIVE)
params->result = E_INVALIDARG;
else if(params->fmt_in->wFormatTag == WAVE_FORMAT_EXTENSIBLE){
if(params->fmt_in->cbSize < sizeof(WAVEFORMATEXTENSIBLE) - sizeof(WAVEFORMATEX))
params->result = E_INVALIDARG;
else if(params->fmt_in->nAvgBytesPerSec == 0 || params->fmt_in->nBlockAlign == 0 ||
(fmtex->Samples.wValidBitsPerSample > params->fmt_in->wBitsPerSample))
params->result = E_INVALIDARG;
}
if(FAILED(params->result))
return STATUS_SUCCESS;
if(params->fmt_in->nChannels == 0){
params->result = AUDCLNT_E_UNSUPPORTED_FORMAT;
return STATUS_SUCCESS;
}
params->result = alsa_open_device(params->alsa_name, params->flow, &pcm_handle, &hw_params);
if(FAILED(params->result))
return STATUS_SUCCESS;
if((err = snd_pcm_hw_params_any(pcm_handle, hw_params)) < 0){
params->result = AUDCLNT_E_DEVICE_INVALIDATED;
goto exit;
}
formats = calloc(1, snd_pcm_format_mask_sizeof());
if(!formats){
params->result = E_OUTOFMEMORY;
goto exit;
}
snd_pcm_hw_params_get_format_mask(hw_params, formats);
format = alsa_format(params->fmt_in);
if (format == SND_PCM_FORMAT_UNKNOWN ||
!snd_pcm_format_mask_test(formats, format)){
params->result = AUDCLNT_E_UNSUPPORTED_FORMAT;
goto exit;
}
closest = clone_format(params->fmt_in);
if(!closest){
params->result = E_OUTOFMEMORY;
goto exit;
}
if((err = snd_pcm_hw_params_get_rate_min(hw_params, &min, NULL)) < 0){
params->result = AUDCLNT_E_DEVICE_INVALIDATED;
WARN("Unable to get min rate: %d (%s)\n", err, snd_strerror(err));
goto exit;
}
if((err = snd_pcm_hw_params_get_rate_max(hw_params, &max, NULL)) < 0){
params->result = AUDCLNT_E_DEVICE_INVALIDATED;
WARN("Unable to get max rate: %d (%s)\n", err, snd_strerror(err));
goto exit;
}
if(params->fmt_in->nSamplesPerSec < min || params->fmt_in->nSamplesPerSec > max){
params->result = AUDCLNT_E_UNSUPPORTED_FORMAT;
goto exit;
}
if((err = snd_pcm_hw_params_get_channels_min(hw_params, &min)) < 0){
params->result = AUDCLNT_E_DEVICE_INVALIDATED;
WARN("Unable to get min channels: %d (%s)\n", err, snd_strerror(err));
goto exit;
}
if((err = snd_pcm_hw_params_get_channels_max(hw_params, &max)) < 0){
params->result = AUDCLNT_E_DEVICE_INVALIDATED;
WARN("Unable to get max channels: %d (%s)\n", err, snd_strerror(err));
goto exit;
}
if(params->fmt_in->nChannels > max){
params->result = S_FALSE;
closest->Format.nChannels = max;
}else if(params->fmt_in->nChannels < min){
params->result = S_FALSE;
closest->Format.nChannels = min;
}
map_channels(params->flow, params->fmt_in, &alsa_channels, alsa_channel_map);
if(alsa_channels > max){
params->result = S_FALSE;
closest->Format.nChannels = max;
}
if(closest->Format.wFormatTag == WAVE_FORMAT_EXTENSIBLE)
closest->dwChannelMask = get_channel_mask(closest->Format.nChannels);
if(params->fmt_in->nBlockAlign != params->fmt_in->nChannels * params->fmt_in->wBitsPerSample / 8 ||
params->fmt_in->nAvgBytesPerSec != params->fmt_in->nBlockAlign * params->fmt_in->nSamplesPerSec ||
(params->fmt_in->wFormatTag == WAVE_FORMAT_EXTENSIBLE &&
fmtex->Samples.wValidBitsPerSample < params->fmt_in->wBitsPerSample))
params->result = S_FALSE;
if(params->share == AUDCLNT_SHAREMODE_EXCLUSIVE && params->fmt_in->wFormatTag == WAVE_FORMAT_EXTENSIBLE){
if(fmtex->dwChannelMask == 0 || fmtex->dwChannelMask & SPEAKER_RESERVED)
params->result = S_FALSE;
}
exit:
if(params->result == S_FALSE && !params->fmt_out)
params->result = AUDCLNT_E_UNSUPPORTED_FORMAT;
if(params->result == S_FALSE && params->fmt_out) {
closest->Format.nBlockAlign = closest->Format.nChannels * closest->Format.wBitsPerSample / 8;
closest->Format.nAvgBytesPerSec = closest->Format.nBlockAlign * closest->Format.nSamplesPerSec;
if(closest->Format.wFormatTag == WAVE_FORMAT_EXTENSIBLE)
closest->Samples.wValidBitsPerSample = closest->Format.wBitsPerSample;
memcpy(params->fmt_out, closest, closest->Format.cbSize);
}
free(closest);
free(formats);
free(hw_params);
snd_pcm_close(pcm_handle);
return STATUS_SUCCESS;
}
static NTSTATUS get_mix_format(void *args)
{
struct get_mix_format_params *params = args;
WAVEFORMATEXTENSIBLE *fmt = params->fmt;
snd_pcm_t *pcm_handle;
snd_pcm_hw_params_t *hw_params;
snd_pcm_format_mask_t *formats;
unsigned int max_rate, max_channels;
int err;
params->result = alsa_open_device(params->alsa_name, params->flow, &pcm_handle, &hw_params);
if(FAILED(params->result))
return STATUS_SUCCESS;
formats = calloc(1, snd_pcm_format_mask_sizeof());
if(!formats){
free(hw_params);
snd_pcm_close(pcm_handle);
params->result = E_OUTOFMEMORY;
return STATUS_SUCCESS;
}
if((err = snd_pcm_hw_params_any(pcm_handle, hw_params)) < 0){
WARN("Unable to get hw_params: %d (%s)\n", err, snd_strerror(err));
params->result = AUDCLNT_E_DEVICE_INVALIDATED;
goto exit;
}
snd_pcm_hw_params_get_format_mask(hw_params, formats);
fmt->Format.wFormatTag = WAVE_FORMAT_EXTENSIBLE;
if(snd_pcm_format_mask_test(formats, SND_PCM_FORMAT_FLOAT_LE)){
fmt->Format.wBitsPerSample = 32;
fmt->SubFormat = KSDATAFORMAT_SUBTYPE_IEEE_FLOAT;
}else if(snd_pcm_format_mask_test(formats, SND_PCM_FORMAT_S16_LE)){
fmt->Format.wBitsPerSample = 16;
fmt->SubFormat = KSDATAFORMAT_SUBTYPE_PCM;
}else if(snd_pcm_format_mask_test(formats, SND_PCM_FORMAT_U8)){
fmt->Format.wBitsPerSample = 8;
fmt->SubFormat = KSDATAFORMAT_SUBTYPE_PCM;
}else if(snd_pcm_format_mask_test(formats, SND_PCM_FORMAT_S32_LE)){
fmt->Format.wBitsPerSample = 32;
fmt->SubFormat = KSDATAFORMAT_SUBTYPE_PCM;
}else if(snd_pcm_format_mask_test(formats, SND_PCM_FORMAT_S24_3LE)){
fmt->Format.wBitsPerSample = 24;
fmt->SubFormat = KSDATAFORMAT_SUBTYPE_PCM;
}else{
ERR("Didn't recognize any available ALSA formats\n");
params->result = AUDCLNT_E_DEVICE_INVALIDATED;
goto exit;
}
if((err = snd_pcm_hw_params_get_channels_max(hw_params, &max_channels)) < 0){
WARN("Unable to get max channels: %d (%s)\n", err, snd_strerror(err));
params->result = AUDCLNT_E_DEVICE_INVALIDATED;
goto exit;
}
if(max_channels > 6)
fmt->Format.nChannels = 2;
else
fmt->Format.nChannels = max_channels;
if(fmt->Format.nChannels > 1 && (fmt->Format.nChannels & 0x1)){
/* For most hardware on Windows, users must choose a configuration with an even
* number of channels (stereo, quad, 5.1, 7.1). Users can then disable
* channels, but those channels are still reported to applications from
* GetMixFormat! Some applications behave badly if given an odd number of
* channels (e.g. 2.1). */
if(fmt->Format.nChannels < max_channels)
fmt->Format.nChannels += 1;
else
/* We could "fake" more channels and downmix the emulated channels,
* but at that point you really ought to tweak your ALSA setup or
* just use PulseAudio. */
WARN("Some Windows applications behave badly with an odd number of channels (%u)!\n", fmt->Format.nChannels);
}
fmt->dwChannelMask = get_channel_mask(fmt->Format.nChannels);
if((err = snd_pcm_hw_params_get_rate_max(hw_params, &max_rate, NULL)) < 0){
WARN("Unable to get max rate: %d (%s)\n", err, snd_strerror(err));
params->result = AUDCLNT_E_DEVICE_INVALIDATED;
goto exit;
}
if(max_rate >= 48000)
fmt->Format.nSamplesPerSec = 48000;
else if(max_rate >= 44100)
fmt->Format.nSamplesPerSec = 44100;
else if(max_rate >= 22050)
fmt->Format.nSamplesPerSec = 22050;
else if(max_rate >= 11025)
fmt->Format.nSamplesPerSec = 11025;
else if(max_rate >= 8000)
fmt->Format.nSamplesPerSec = 8000;
else{
ERR("Unknown max rate: %u\n", max_rate);
params->result = AUDCLNT_E_DEVICE_INVALIDATED;
goto exit;
}
fmt->Format.nBlockAlign = (fmt->Format.wBitsPerSample * fmt->Format.nChannels) / 8;
fmt->Format.nAvgBytesPerSec = fmt->Format.nSamplesPerSec * fmt->Format.nBlockAlign;
fmt->Samples.wValidBitsPerSample = fmt->Format.wBitsPerSample;
fmt->Format.cbSize = sizeof(WAVEFORMATEXTENSIBLE) - sizeof(WAVEFORMATEX);
exit:
free(formats);
free(hw_params);
snd_pcm_close(pcm_handle);
return STATUS_SUCCESS;
}
unixlib_entry_t __wine_unix_call_funcs[] =
{
get_endpoint_ids,
is_format_supported,
get_mix_format,
};
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