/* * 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 #include #include #include #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); #define EXTRA_SAFE_RT 40000 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; } /* copied from kernelbase */ static int muldiv( int a, int b, int c ) { LONGLONG ret; if (!c) return -1; /* We want to deal with a positive divisor to simplify the logic. */ if (c < 0) { a = -a; c = -c; } /* If the result is positive, we "add" to round. else, we subtract to round. */ if ((a < 0 && b < 0) || (a >= 0 && b >= 0)) ret = (((LONGLONG)a * b) + (c / 2)) / c; else ret = (((LONGLONG)a * b) - (c / 2)) / c; if (ret > 2147483647 || ret < -2147483647) return -1; return ret; } static void alsa_lock(struct alsa_stream *stream) { pthread_mutex_lock(&stream->lock); } static void alsa_unlock(struct alsa_stream *stream) { pthread_mutex_unlock(&stream->lock); } static NTSTATUS alsa_unlock_result(struct alsa_stream *stream, HRESULT *result, HRESULT value) { *result = value; alsa_unlock(stream); return STATUS_SUCCESS; } 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 void silence_buffer(struct alsa_stream *stream, BYTE *buffer, UINT32 frames) { WAVEFORMATEXTENSIBLE *fmtex = (WAVEFORMATEXTENSIBLE*)stream->fmt; if((stream->fmt->wFormatTag == WAVE_FORMAT_PCM || (stream->fmt->wFormatTag == WAVE_FORMAT_EXTENSIBLE && IsEqualGUID(&fmtex->SubFormat, &KSDATAFORMAT_SUBTYPE_PCM))) && stream->fmt->wBitsPerSample == 8) memset(buffer, 128, frames * stream->fmt->nBlockAlign); else memset(buffer, 0, frames * stream->fmt->nBlockAlign); } static NTSTATUS create_stream(void *args) { struct create_stream_params *params = args; struct alsa_stream *stream; snd_pcm_sw_params_t *sw_params = NULL; snd_pcm_format_t format; unsigned int rate, alsa_period_us, i; WAVEFORMATEXTENSIBLE *fmtex; int err; SIZE_T size; stream = calloc(1, sizeof(*stream)); if(!stream){ params->result = E_OUTOFMEMORY; return STATUS_SUCCESS; } params->result = alsa_open_device(params->alsa_name, params->flow, &stream->pcm_handle, &stream->hw_params); if(FAILED(params->result)){ free(stream); return STATUS_SUCCESS; } stream->need_remapping = map_channels(params->flow, params->fmt, &stream->alsa_channels, stream->alsa_channel_map) == S_OK; if((err = snd_pcm_hw_params_any(stream->pcm_handle, stream->hw_params)) < 0){ WARN("Unable to get hw_params: %d (%s)\n", err, snd_strerror(err)); params->result = AUDCLNT_E_ENDPOINT_CREATE_FAILED; goto exit; } if((err = snd_pcm_hw_params_set_access(stream->pcm_handle, stream->hw_params, SND_PCM_ACCESS_RW_INTERLEAVED)) < 0){ WARN("Unable to set access: %d (%s)\n", err, snd_strerror(err)); params->result = AUDCLNT_E_ENDPOINT_CREATE_FAILED; goto exit; } format = alsa_format(params->fmt); if (format == SND_PCM_FORMAT_UNKNOWN){ params->result = AUDCLNT_E_UNSUPPORTED_FORMAT; goto exit; } if((err = snd_pcm_hw_params_set_format(stream->pcm_handle, stream->hw_params, format)) < 0){ WARN("Unable to set ALSA format to %u: %d (%s)\n", format, err, snd_strerror(err)); params->result = AUDCLNT_E_UNSUPPORTED_FORMAT; goto exit; } stream->alsa_format = format; stream->flow = params->flow; rate = params->fmt->nSamplesPerSec; if((err = snd_pcm_hw_params_set_rate_near(stream->pcm_handle, stream->hw_params, &rate, NULL)) < 0){ WARN("Unable to set rate to %u: %d (%s)\n", rate, err, snd_strerror(err)); params->result = AUDCLNT_E_UNSUPPORTED_FORMAT; goto exit; } if((err = snd_pcm_hw_params_set_channels(stream->pcm_handle, stream->hw_params, stream->alsa_channels)) < 0){ WARN("Unable to set channels to %u: %d (%s)\n", params->fmt->nChannels, err, snd_strerror(err)); params->result = AUDCLNT_E_UNSUPPORTED_FORMAT; goto exit; } stream->mmdev_period_rt = params->period; alsa_period_us = stream->mmdev_period_rt / 10; if((err = snd_pcm_hw_params_set_period_time_near(stream->pcm_handle, stream->hw_params, &alsa_period_us, NULL)) < 0) WARN("Unable to set period time near %u: %d (%s)\n", alsa_period_us, err, snd_strerror(err)); /* ALSA updates the output variable alsa_period_us */ stream->mmdev_period_frames = muldiv(params->fmt->nSamplesPerSec, stream->mmdev_period_rt, 10000000); /* Buffer 4 ALSA periods if large enough, else 4 mmdevapi periods */ stream->alsa_bufsize_frames = stream->mmdev_period_frames * 4; if(err < 0 || alsa_period_us < params->period / 10) err = snd_pcm_hw_params_set_buffer_size_near(stream->pcm_handle, stream->hw_params, &stream->alsa_bufsize_frames); else{ unsigned int periods = 4; err = snd_pcm_hw_params_set_periods_near(stream->pcm_handle, stream->hw_params, &periods, NULL); } if(err < 0) WARN("Unable to set buffer size: %d (%s)\n", err, snd_strerror(err)); if((err = snd_pcm_hw_params(stream->pcm_handle, stream->hw_params)) < 0){ WARN("Unable to set hw params: %d (%s)\n", err, snd_strerror(err)); params->result = AUDCLNT_E_ENDPOINT_CREATE_FAILED; goto exit; } if((err = snd_pcm_hw_params_get_period_size(stream->hw_params, &stream->alsa_period_frames, NULL)) < 0){ WARN("Unable to get period size: %d (%s)\n", err, snd_strerror(err)); params->result = AUDCLNT_E_ENDPOINT_CREATE_FAILED; goto exit; } if((err = snd_pcm_hw_params_get_buffer_size(stream->hw_params, &stream->alsa_bufsize_frames)) < 0){ WARN("Unable to get buffer size: %d (%s)\n", err, snd_strerror(err)); params->result = AUDCLNT_E_ENDPOINT_CREATE_FAILED; goto exit; } sw_params = calloc(1, snd_pcm_sw_params_sizeof()); if(!sw_params){ params->result = E_OUTOFMEMORY; goto exit; } if((err = snd_pcm_sw_params_current(stream->pcm_handle, sw_params)) < 0){ WARN("Unable to get sw_params: %d (%s)\n", err, snd_strerror(err)); params->result = AUDCLNT_E_ENDPOINT_CREATE_FAILED; goto exit; } if((err = snd_pcm_sw_params_set_start_threshold(stream->pcm_handle, sw_params, 1)) < 0){ WARN("Unable set start threshold to 1: %d (%s)\n", err, snd_strerror(err)); params->result = AUDCLNT_E_ENDPOINT_CREATE_FAILED; goto exit; } if((err = snd_pcm_sw_params_set_stop_threshold(stream->pcm_handle, sw_params, stream->alsa_bufsize_frames)) < 0){ WARN("Unable set stop threshold to %lu: %d (%s)\n", stream->alsa_bufsize_frames, err, snd_strerror(err)); params->result = AUDCLNT_E_ENDPOINT_CREATE_FAILED; goto exit; } if((err = snd_pcm_sw_params(stream->pcm_handle, sw_params)) < 0){ WARN("Unable to set sw params: %d (%s)\n", err, snd_strerror(err)); params->result = AUDCLNT_E_ENDPOINT_CREATE_FAILED; goto exit; } if((err = snd_pcm_prepare(stream->pcm_handle)) < 0){ WARN("Unable to prepare device: %d (%s)\n", err, snd_strerror(err)); params->result = AUDCLNT_E_ENDPOINT_CREATE_FAILED; goto exit; } /* Bear in mind weird situations where * ALSA period (50ms) > mmdevapi buffer (3x10ms) * or surprising rounding as seen with 22050x8x1 with Pulse: * ALSA period 220 vs. 221 frames in mmdevapi and * buffer 883 vs. 2205 frames in mmdevapi! */ stream->bufsize_frames = muldiv(params->duration, params->fmt->nSamplesPerSec, 10000000); if(params->share == AUDCLNT_SHAREMODE_EXCLUSIVE) stream->bufsize_frames -= stream->bufsize_frames % stream->mmdev_period_frames; stream->hidden_frames = stream->alsa_period_frames + stream->mmdev_period_frames + muldiv(params->fmt->nSamplesPerSec, EXTRA_SAFE_RT, 10000000); /* leave no less than about 1.33ms or 256 bytes of data after a rewind */ stream->safe_rewind_frames = max(256 / params->fmt->nBlockAlign, muldiv(133, params->fmt->nSamplesPerSec, 100000)); /* Check if the ALSA buffer is so small that it will run out before * the next MMDevAPI period tick occurs. Allow a little wiggle room * with 120% of the period time. */ if(stream->alsa_bufsize_frames < 1.2 * stream->mmdev_period_frames) FIXME("ALSA buffer time is too small. Expect underruns. (%lu < %u * 1.2)\n", stream->alsa_bufsize_frames, stream->mmdev_period_frames); fmtex = clone_format(params->fmt); if(!fmtex){ params->result = E_OUTOFMEMORY; goto exit; } stream->fmt = &fmtex->Format; size = stream->bufsize_frames * params->fmt->nBlockAlign; if(NtAllocateVirtualMemory(GetCurrentProcess(), (void **)&stream->local_buffer, 0, &size, MEM_COMMIT, PAGE_READWRITE)){ params->result = E_OUTOFMEMORY; goto exit; } silence_buffer(stream, stream->local_buffer, stream->bufsize_frames); stream->silence_buf = malloc(stream->alsa_period_frames * stream->fmt->nBlockAlign); if(!stream->silence_buf){ params->result = E_OUTOFMEMORY; goto exit; } silence_buffer(stream, stream->silence_buf, stream->alsa_period_frames); stream->vols = malloc(params->fmt->nChannels * sizeof(float)); if(!stream->vols){ params->result = E_OUTOFMEMORY; goto exit; } for(i = 0; i < params->fmt->nChannels; ++i) stream->vols[i] = 1.f; stream->share = params->share; stream->flags = params->flags; pthread_mutex_init(&stream->lock, NULL); TRACE("ALSA period: %lu frames\n", stream->alsa_period_frames); TRACE("ALSA buffer: %lu frames\n", stream->alsa_bufsize_frames); TRACE("MMDevice period: %u frames\n", stream->mmdev_period_frames); TRACE("MMDevice buffer: %u frames\n", stream->bufsize_frames); exit: free(sw_params); if(FAILED(params->result)){ snd_pcm_close(stream->pcm_handle); if(stream->local_buffer){ size = 0; NtFreeVirtualMemory(GetCurrentProcess(), (void **)&stream->local_buffer, &size, MEM_RELEASE); } free(stream->silence_buf); free(stream->hw_params); free(stream->fmt); free(stream->vols); free(stream); }else{ *params->stream = stream; } return STATUS_SUCCESS; } static NTSTATUS release_stream(void *args) { struct release_stream_params *params = args; struct alsa_stream *stream = params->stream; SIZE_T size; if(params->timer_thread){ stream->please_quit = TRUE; NtWaitForSingleObject(params->timer_thread, FALSE, NULL); NtClose(params->timer_thread); } snd_pcm_drop(stream->pcm_handle); snd_pcm_close(stream->pcm_handle); if(stream->local_buffer){ size = 0; NtFreeVirtualMemory(GetCurrentProcess(), (void **)&stream->local_buffer, &size, MEM_RELEASE); } if(stream->tmp_buffer){ size = 0; NtFreeVirtualMemory(GetCurrentProcess(), (void **)&stream->tmp_buffer, &size, MEM_RELEASE); } free(stream->remapping_buf); free(stream->silence_buf); free(stream->hw_params); free(stream->fmt); free(stream->vols); pthread_mutex_destroy(&stream->lock); free(stream); params->result = S_OK; return STATUS_SUCCESS; } static BYTE *remap_channels(struct alsa_stream *stream, BYTE *buf, snd_pcm_uframes_t frames) { snd_pcm_uframes_t i; UINT c; UINT bytes_per_sample = stream->fmt->wBitsPerSample / 8; if(!stream->need_remapping) return buf; if(stream->remapping_buf_frames < frames){ stream->remapping_buf = realloc(stream->remapping_buf, bytes_per_sample * stream->alsa_channels * frames); stream->remapping_buf_frames = frames; } snd_pcm_format_set_silence(stream->alsa_format, stream->remapping_buf, frames * stream->alsa_channels); switch(stream->fmt->wBitsPerSample){ case 8: { UINT8 *tgt_buf, *src_buf; tgt_buf = stream->remapping_buf; src_buf = buf; for(i = 0; i < frames; ++i){ for(c = 0; c < stream->fmt->nChannels; ++c) tgt_buf[stream->alsa_channel_map[c]] = src_buf[c]; tgt_buf += stream->alsa_channels; src_buf += stream->fmt->nChannels; } break; } case 16: { UINT16 *tgt_buf, *src_buf; tgt_buf = (UINT16*)stream->remapping_buf; src_buf = (UINT16*)buf; for(i = 0; i < frames; ++i){ for(c = 0; c < stream->fmt->nChannels; ++c) tgt_buf[stream->alsa_channel_map[c]] = src_buf[c]; tgt_buf += stream->alsa_channels; src_buf += stream->fmt->nChannels; } } break; case 32: { UINT32 *tgt_buf, *src_buf; tgt_buf = (UINT32*)stream->remapping_buf; src_buf = (UINT32*)buf; for(i = 0; i < frames; ++i){ for(c = 0; c < stream->fmt->nChannels; ++c) tgt_buf[stream->alsa_channel_map[c]] = src_buf[c]; tgt_buf += stream->alsa_channels; src_buf += stream->fmt->nChannels; } } break; default: { BYTE *tgt_buf, *src_buf; tgt_buf = stream->remapping_buf; src_buf = buf; for(i = 0; i < frames; ++i){ for(c = 0; c < stream->fmt->nChannels; ++c) memcpy(&tgt_buf[stream->alsa_channel_map[c] * bytes_per_sample], &src_buf[c * bytes_per_sample], bytes_per_sample); tgt_buf += stream->alsa_channels * bytes_per_sample; src_buf += stream->fmt->nChannels * bytes_per_sample; } } break; } return stream->remapping_buf; } static void adjust_buffer_volume(const struct alsa_stream *stream, BYTE *buf, snd_pcm_uframes_t frames) { BOOL adjust = FALSE; UINT32 i, channels, mute = 0; BYTE *end; if (stream->vol_adjusted_frames >= frames) return; channels = stream->fmt->nChannels; /* Adjust the buffer based on the volume for each channel */ for (i = 0; i < channels; i++) { adjust |= stream->vols[i] != 1.0f; if (stream->vols[i] == 0.0f) mute++; } if (mute == channels) { int err = snd_pcm_format_set_silence(stream->alsa_format, buf, frames * channels); if (err < 0) WARN("Setting buffer to silence failed: %d (%s)\n", err, snd_strerror(err)); return; } if (!adjust) return; /* Skip the frames we've already adjusted before */ end = buf + frames * stream->fmt->nBlockAlign; buf += stream->vol_adjusted_frames * stream->fmt->nBlockAlign; switch (stream->alsa_format) { #ifndef WORDS_BIGENDIAN #define PROCESS_BUFFER(type) do \ { \ type *p = (type*)buf; \ do \ { \ for (i = 0; i < channels; i++) \ p[i] = p[i] * stream->vols[i]; \ p += i; \ } while ((BYTE*)p != end); \ } while (0) case SND_PCM_FORMAT_S16_LE: PROCESS_BUFFER(INT16); break; case SND_PCM_FORMAT_S32_LE: PROCESS_BUFFER(INT32); break; case SND_PCM_FORMAT_FLOAT_LE: PROCESS_BUFFER(float); break; case SND_PCM_FORMAT_FLOAT64_LE: PROCESS_BUFFER(double); break; #undef PROCESS_BUFFER case SND_PCM_FORMAT_S20_3LE: case SND_PCM_FORMAT_S24_3LE: { /* Do it 12 bytes at a time until it is no longer possible */ UINT32 *q = (UINT32*)buf, mask = ~0xff; BYTE *p; /* After we adjust the volume, we need to mask out low bits */ if (stream->alsa_format == SND_PCM_FORMAT_S20_3LE) mask = ~0x0fff; i = 0; while (end - (BYTE*)q >= 12) { UINT32 v[4], k; v[0] = q[0] << 8; v[1] = q[1] << 16 | (q[0] >> 16 & ~0xff); v[2] = q[2] << 24 | (q[1] >> 8 & ~0xff); v[3] = q[2] & ~0xff; for (k = 0; k < 4; k++) { v[k] = (INT32)((INT32)v[k] * stream->vols[i]); v[k] &= mask; if (++i == channels) i = 0; } *q++ = v[0] >> 8 | v[1] << 16; *q++ = v[1] >> 16 | v[2] << 8; *q++ = v[2] >> 24 | v[3]; } p = (BYTE*)q; while (p != end) { UINT32 v = (INT32)((INT32)(p[0] << 8 | p[1] << 16 | p[2] << 24) * stream->vols[i]); v &= mask; *p++ = v >> 8 & 0xff; *p++ = v >> 16 & 0xff; *p++ = v >> 24; if (++i == channels) i = 0; } break; } #endif case SND_PCM_FORMAT_U8: { UINT8 *p = (UINT8*)buf; do { for (i = 0; i < channels; i++) p[i] = (int)((p[i] - 128) * stream->vols[i]) + 128; p += i; } while ((BYTE*)p != end); break; } default: TRACE("Unhandled format %i, not adjusting volume.\n", stream->alsa_format); break; } } static snd_pcm_sframes_t alsa_write_best_effort(struct alsa_stream *stream, BYTE *buf, snd_pcm_uframes_t frames) { snd_pcm_sframes_t written; adjust_buffer_volume(stream, buf, frames); /* Mark the frames we've already adjusted */ if (stream->vol_adjusted_frames < frames) stream->vol_adjusted_frames = frames; buf = remap_channels(stream, buf, frames); written = snd_pcm_writei(stream->pcm_handle, buf, frames); if(written < 0){ int ret; if(written == -EAGAIN) /* buffer full */ return 0; WARN("writei failed, recovering: %ld (%s)\n", written, snd_strerror(written)); ret = snd_pcm_recover(stream->pcm_handle, written, 0); if(ret < 0){ WARN("Could not recover: %d (%s)\n", ret, snd_strerror(ret)); return ret; } written = snd_pcm_writei(stream->pcm_handle, buf, frames); } if (written > 0) stream->vol_adjusted_frames -= written; return written; } static snd_pcm_sframes_t alsa_write_buffer_wrap(struct alsa_stream *stream, BYTE *buf, snd_pcm_uframes_t buflen, snd_pcm_uframes_t offs, snd_pcm_uframes_t to_write) { snd_pcm_sframes_t ret = 0; while(to_write){ snd_pcm_uframes_t chunk; snd_pcm_sframes_t tmp; if(offs + to_write > buflen) chunk = buflen - offs; else chunk = to_write; tmp = alsa_write_best_effort(stream, buf + offs * stream->fmt->nBlockAlign, chunk); if(tmp < 0) return ret; if(!tmp) break; ret += tmp; to_write -= tmp; offs += tmp; offs %= buflen; } return ret; } static UINT buf_ptr_diff(UINT left, UINT right, UINT bufsize) { if(left <= right) return right - left; return bufsize - (left - right); } static UINT data_not_in_alsa(struct alsa_stream *stream) { UINT32 diff; diff = buf_ptr_diff(stream->lcl_offs_frames, stream->wri_offs_frames, stream->bufsize_frames); if(diff) return diff; return stream->held_frames - stream->data_in_alsa_frames; } /* Here's the buffer setup: * * vvvvvvvv sent to HW already * vvvvvvvv in ALSA buffer but rewindable * [dddddddddddddddd] ALSA buffer * [dddddddddddddddd--------] mmdevapi buffer * ^^^^^^^^ data_in_alsa_frames * ^^^^^^^^^^^^^^^^ held_frames * ^ lcl_offs_frames * ^ wri_offs_frames * * GetCurrentPadding is held_frames * * During period callback, we decrement held_frames, fill ALSA buffer, and move * lcl_offs forward * * During Stop, we rewind the ALSA buffer */ static void alsa_write_data(struct alsa_stream *stream) { snd_pcm_sframes_t written; snd_pcm_uframes_t avail, max_copy_frames, data_frames_played; int err; /* this call seems to be required to get an accurate snd_pcm_state() */ avail = snd_pcm_avail_update(stream->pcm_handle); if(snd_pcm_state(stream->pcm_handle) == SND_PCM_STATE_XRUN){ TRACE("XRun state, recovering\n"); avail = stream->alsa_bufsize_frames; if((err = snd_pcm_recover(stream->pcm_handle, -EPIPE, 1)) < 0) WARN("snd_pcm_recover failed: %d (%s)\n", err, snd_strerror(err)); if((err = snd_pcm_reset(stream->pcm_handle)) < 0) WARN("snd_pcm_reset failed: %d (%s)\n", err, snd_strerror(err)); if((err = snd_pcm_prepare(stream->pcm_handle)) < 0) WARN("snd_pcm_prepare failed: %d (%s)\n", err, snd_strerror(err)); } TRACE("avail: %ld\n", avail); /* Add a lead-in when starting with too few frames to ensure * continuous rendering. Additional benefit: Force ALSA to start. */ if(stream->data_in_alsa_frames == 0 && stream->held_frames < stream->alsa_period_frames) { alsa_write_best_effort(stream, stream->silence_buf, stream->alsa_period_frames - stream->held_frames); stream->vol_adjusted_frames = 0; } if(stream->started) max_copy_frames = data_not_in_alsa(stream); else max_copy_frames = 0; data_frames_played = min(stream->data_in_alsa_frames, avail); stream->data_in_alsa_frames -= data_frames_played; if(stream->held_frames > data_frames_played){ if(stream->started) stream->held_frames -= data_frames_played; }else stream->held_frames = 0; while(avail && max_copy_frames){ snd_pcm_uframes_t to_write; to_write = min(avail, max_copy_frames); written = alsa_write_buffer_wrap(stream, stream->local_buffer, stream->bufsize_frames, stream->lcl_offs_frames, to_write); if(written <= 0) break; avail -= written; stream->lcl_offs_frames += written; stream->lcl_offs_frames %= stream->bufsize_frames; stream->data_in_alsa_frames += written; max_copy_frames -= written; } if(stream->event) NtSetEvent(stream->event, NULL); } static void alsa_read_data(struct alsa_stream *stream) { snd_pcm_sframes_t nread; UINT32 pos = stream->wri_offs_frames, limit = stream->held_frames; unsigned int i; if(!stream->started) goto exit; /* FIXME: Detect overrun and signal DATA_DISCONTINUITY * How to count overrun frames and report them as position increase? */ limit = stream->bufsize_frames - max(limit, pos); nread = snd_pcm_readi(stream->pcm_handle, stream->local_buffer + pos * stream->fmt->nBlockAlign, limit); TRACE("read %ld from %u limit %u\n", nread, pos, limit); if(nread < 0){ int ret; if(nread == -EAGAIN) /* no data yet */ return; WARN("read failed, recovering: %ld (%s)\n", nread, snd_strerror(nread)); ret = snd_pcm_recover(stream->pcm_handle, nread, 0); if(ret < 0){ WARN("Recover failed: %d (%s)\n", ret, snd_strerror(ret)); return; } nread = snd_pcm_readi(stream->pcm_handle, stream->local_buffer + pos * stream->fmt->nBlockAlign, limit); if(nread < 0){ WARN("read failed: %ld (%s)\n", nread, snd_strerror(nread)); return; } } for(i = 0; i < stream->fmt->nChannels; i++) if(stream->vols[i] != 0.0f) break; if(i == stream->fmt->nChannels){ /* mute */ int err; if((err = snd_pcm_format_set_silence(stream->alsa_format, stream->local_buffer + pos * stream->fmt->nBlockAlign, nread)) < 0) WARN("Setting buffer to silence failed: %d (%s)\n", err, snd_strerror(err)); } stream->wri_offs_frames += nread; stream->wri_offs_frames %= stream->bufsize_frames; stream->held_frames += nread; exit: if(stream->event) NtSetEvent(stream->event, NULL); } static snd_pcm_uframes_t interp_elapsed_frames(struct alsa_stream *stream) { LARGE_INTEGER time_freq, current_time, time_diff; NtQueryPerformanceCounter(¤t_time, &time_freq); time_diff.QuadPart = current_time.QuadPart - stream->last_period_time.QuadPart; return muldiv(time_diff.QuadPart, stream->fmt->nSamplesPerSec, time_freq.QuadPart); } static int alsa_rewind_best_effort(struct alsa_stream *stream) { snd_pcm_uframes_t len, leave; /* we can't use snd_pcm_rewindable, some PCM devices crash. so follow * PulseAudio's example and rewind as much data as we believe is in the * buffer, minus 1.33ms for safety. */ /* amount of data to leave in ALSA buffer */ leave = interp_elapsed_frames(stream) + stream->safe_rewind_frames; if(stream->held_frames < leave) stream->held_frames = 0; else stream->held_frames -= leave; if(stream->data_in_alsa_frames < leave) len = 0; else len = stream->data_in_alsa_frames - leave; TRACE("rewinding %lu frames, now held %u\n", len, stream->held_frames); if(len) /* snd_pcm_rewind return value is often broken, assume it succeeded */ snd_pcm_rewind(stream->pcm_handle, len); stream->data_in_alsa_frames = 0; return len; } static NTSTATUS start(void *args) { struct start_params *params = args; struct alsa_stream *stream = params->stream; alsa_lock(stream); if((stream->flags & AUDCLNT_STREAMFLAGS_EVENTCALLBACK) && !stream->event) return alsa_unlock_result(stream, ¶ms->result, AUDCLNT_E_EVENTHANDLE_NOT_SET); if(stream->started) return alsa_unlock_result(stream, ¶ms->result, AUDCLNT_E_NOT_STOPPED); if(stream->flow == eCapture){ /* dump any data that might be leftover in the ALSA capture buffer */ snd_pcm_readi(stream->pcm_handle, stream->local_buffer, stream->bufsize_frames); }else{ snd_pcm_sframes_t avail, written; snd_pcm_uframes_t offs; avail = snd_pcm_avail_update(stream->pcm_handle); avail = min(avail, stream->held_frames); if(stream->wri_offs_frames < stream->held_frames) offs = stream->bufsize_frames - stream->held_frames + stream->wri_offs_frames; else offs = stream->wri_offs_frames - stream->held_frames; /* fill it with data */ written = alsa_write_buffer_wrap(stream, stream->local_buffer, stream->bufsize_frames, offs, avail); if(written > 0){ stream->lcl_offs_frames = (offs + written) % stream->bufsize_frames; stream->data_in_alsa_frames = written; }else{ stream->lcl_offs_frames = offs; stream->data_in_alsa_frames = 0; } } stream->started = TRUE; return alsa_unlock_result(stream, ¶ms->result, S_OK); } static NTSTATUS stop(void *args) { struct stop_params *params = args; struct alsa_stream *stream = params->stream; alsa_lock(stream); if(!stream->started) return alsa_unlock_result(stream, ¶ms->result, S_FALSE); if(stream->flow == eRender) alsa_rewind_best_effort(stream); stream->started = FALSE; return alsa_unlock_result(stream, ¶ms->result, S_OK); } static NTSTATUS reset(void *args) { struct reset_params *params = args; struct alsa_stream *stream = params->stream; alsa_lock(stream); if(stream->started) return alsa_unlock_result(stream, ¶ms->result, AUDCLNT_E_NOT_STOPPED); if(stream->getbuf_last) return alsa_unlock_result(stream, ¶ms->result, AUDCLNT_E_BUFFER_OPERATION_PENDING); if(snd_pcm_drop(stream->pcm_handle) < 0) WARN("snd_pcm_drop failed\n"); if(snd_pcm_reset(stream->pcm_handle) < 0) WARN("snd_pcm_reset failed\n"); if(snd_pcm_prepare(stream->pcm_handle) < 0) WARN("snd_pcm_prepare failed\n"); if(stream->flow == eRender){ stream->written_frames = 0; stream->last_pos_frames = 0; }else{ stream->written_frames += stream->held_frames; } stream->held_frames = 0; stream->lcl_offs_frames = 0; stream->wri_offs_frames = 0; return alsa_unlock_result(stream, ¶ms->result, S_OK); } static NTSTATUS timer_loop(void *args) { struct timer_loop_params *params = args; struct alsa_stream *stream = params->stream; LARGE_INTEGER delay, next; int adjust; alsa_lock(stream); delay.QuadPart = -stream->mmdev_period_rt; NtQueryPerformanceCounter(&stream->last_period_time, NULL); next.QuadPart = stream->last_period_time.QuadPart + stream->mmdev_period_rt; while(!stream->please_quit){ if(stream->flow == eRender) alsa_write_data(stream); else if(stream->flow == eCapture) alsa_read_data(stream); alsa_unlock(stream); NtDelayExecution(FALSE, &delay); alsa_lock(stream); NtQueryPerformanceCounter(&stream->last_period_time, NULL); adjust = next.QuadPart - stream->last_period_time.QuadPart; if(adjust > stream->mmdev_period_rt / 2) adjust = stream->mmdev_period_rt / 2; else if(adjust < -stream->mmdev_period_rt / 2) adjust = -stream->mmdev_period_rt / 2; delay.QuadPart = -(stream->mmdev_period_rt + adjust); next.QuadPart += stream->mmdev_period_rt; } alsa_unlock(stream); return STATUS_SUCCESS; } static NTSTATUS get_render_buffer(void *args) { struct get_render_buffer_params *params = args; struct alsa_stream *stream = params->stream; UINT32 write_pos, frames = params->frames; SIZE_T size; alsa_lock(stream); if(stream->getbuf_last) return alsa_unlock_result(stream, ¶ms->result, AUDCLNT_E_OUT_OF_ORDER); if(!frames) return alsa_unlock_result(stream, ¶ms->result, S_OK); /* held_frames == GetCurrentPadding_nolock(); */ if(stream->held_frames + frames > stream->bufsize_frames) return alsa_unlock_result(stream, ¶ms->result, AUDCLNT_E_BUFFER_TOO_LARGE); write_pos = stream->wri_offs_frames; if(write_pos + frames > stream->bufsize_frames){ if(stream->tmp_buffer_frames < frames){ if(stream->tmp_buffer){ size = 0; NtFreeVirtualMemory(GetCurrentProcess(), (void **)&stream->tmp_buffer, &size, MEM_RELEASE); stream->tmp_buffer = NULL; } size = frames * stream->fmt->nBlockAlign; if(NtAllocateVirtualMemory(GetCurrentProcess(), (void **)&stream->tmp_buffer, 0, &size, MEM_COMMIT, PAGE_READWRITE)){ stream->tmp_buffer_frames = 0; return alsa_unlock_result(stream, ¶ms->result, E_OUTOFMEMORY); } stream->tmp_buffer_frames = frames; } *params->data = stream->tmp_buffer; stream->getbuf_last = -frames; }else{ *params->data = stream->local_buffer + write_pos * stream->fmt->nBlockAlign; stream->getbuf_last = frames; } silence_buffer(stream, *params->data, frames); return alsa_unlock_result(stream, ¶ms->result, S_OK); } 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; } static NTSTATUS get_buffer_size(void *args) { struct get_buffer_size_params *params = args; struct alsa_stream *stream = params->stream; alsa_lock(stream); *params->size = stream->bufsize_frames; return alsa_unlock_result(stream, ¶ms->result, S_OK); } static NTSTATUS get_latency(void *args) { struct get_latency_params *params = args; struct alsa_stream *stream = params->stream; alsa_lock(stream); /* Hide some frames in the ALSA buffer. Allows us to return GetCurrentPadding=0 * yet have enough data left to play (as if it were in native's mixer). Add: * + mmdevapi_period such that at the end of it, ALSA still has data; * + EXTRA_SAFE (~4ms) to allow for late callback invocation / fluctuation; * + alsa_period such that ALSA always has at least one period to play. */ if(stream->flow == eRender) *params->latency = muldiv(stream->hidden_frames, 10000000, stream->fmt->nSamplesPerSec); else *params->latency = muldiv(stream->alsa_period_frames, 10000000, stream->fmt->nSamplesPerSec) + stream->mmdev_period_rt; return alsa_unlock_result(stream, ¶ms->result, S_OK); } static NTSTATUS get_current_padding(void *args) { struct get_current_padding_params *params = args; struct alsa_stream *stream = params->stream; alsa_lock(stream); /* padding is solely updated at callback time in shared mode */ *params->padding = stream->held_frames; return alsa_unlock_result(stream, ¶ms->result, S_OK); } static NTSTATUS set_event_handle(void *args) { struct set_event_handle_params *params = args; struct alsa_stream *stream = params->stream; alsa_lock(stream); if(!(stream->flags & AUDCLNT_STREAMFLAGS_EVENTCALLBACK)) return alsa_unlock_result(stream, ¶ms->result, AUDCLNT_E_EVENTHANDLE_NOT_EXPECTED); if (stream->event){ FIXME("called twice\n"); return alsa_unlock_result(stream, ¶ms->result, HRESULT_FROM_WIN32(ERROR_INVALID_NAME)); } stream->event = params->event; return alsa_unlock_result(stream, ¶ms->result, S_OK); } unixlib_entry_t __wine_unix_call_funcs[] = { get_endpoint_ids, create_stream, release_stream, start, stop, reset, timer_loop, get_render_buffer, is_format_supported, get_mix_format, get_buffer_size, get_latency, get_current_padding, set_event_handle, };