dlls/winepulse.drv/mmdevdrv.c

   1 /*
   2  * Copyright 2011-2012 Maarten Lankhorst
   3  * Copyright 2010-2011 Maarten Lankhorst for CodeWeavers
   4  * Copyright 2011 Andrew Eikum for CodeWeavers
   5  * Copyright 2022 Huw Davies
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  */
  21
  22 #define COBJMACROS
  23
  24 #include <stdarg.h>
  25 #include <assert.h>
  26 #include <wchar.h>
  27
  28 #include "windef.h"
  29 #include "winbase.h"
  30 #include "winternl.h"
  31 #include "wine/debug.h"
  32 #include "wine/list.h"
  33 #include "wine/unixlib.h"
  34
  35 #include "ole2.h"
  36 #include "mimeole.h"
  37 #include "dshow.h"
  38 #include "dsound.h"
  39 #include "propsys.h"
  40 #include "propkey.h"
  41
  42 #include "initguid.h"
  43 #include "ks.h"
  44 #include "ksmedia.h"
  45 #include "mmdeviceapi.h"
  46 #include "audioclient.h"
  47 #include "endpointvolume.h"
  48 #include "audiopolicy.h"
  49
  50 #include "../mmdevapi/unixlib.h"
  51 #include "../mmdevapi/mmdevdrv.h"
  52
  53 WINE_DEFAULT_DEBUG_CHANNEL(pulse);
  54
  55 #define MAX_PULSE_NAME_LEN 256
  56
  57 static struct list g_devices_cache = LIST_INIT(g_devices_cache);
  58
  59 struct device_cache {
  60     struct list entry;
  61     GUID guid;
  62     EDataFlow dataflow;
  63     char pulse_name[0];
  64 };
  65
  66 static GUID pulse_render_guid =
  67 { 0xfd47d9cc, 0x4218, 0x4135, { 0x9c, 0xe2, 0x0c, 0x19, 0x5c, 0x87, 0x40, 0x5b } };
  68 static GUID pulse_capture_guid =
  69 { 0x25da76d0, 0x033c, 0x4235, { 0x90, 0x02, 0x19, 0xf4, 0x88, 0x94, 0xac, 0x6f } };
  70
  71 static WCHAR drv_key_devicesW[256];
  72
  73 BOOL WINAPI DllMain(HINSTANCE dll, DWORD reason, void *reserved)
  74 {
  75     if (reason == DLL_PROCESS_ATTACH) {
  76         WCHAR buf[MAX_PATH];
  77         WCHAR *filename;
  78
  79         DisableThreadLibraryCalls(dll);
  80         if (__wine_init_unix_call())
  81             return FALSE;
  82
  83         GetModuleFileNameW(dll, buf, ARRAY_SIZE(buf));
  84
  85         filename = wcsrchr(buf, '\\');
  86         filename = filename ? filename + 1 : buf;
  87
  88         swprintf(drv_key_devicesW, ARRAY_SIZE(drv_key_devicesW),
  89                  L"Software\\Wine\\Drivers\\%s\\devices", filename);
  90     } else if (reason == DLL_PROCESS_DETACH) {
  91         struct device_cache *device, *device_next;
  92
  93         LIST_FOR_EACH_ENTRY_SAFE(device, device_next, &g_devices_cache, struct device_cache, entry)
  94             free(device);
  95     }
  96     return TRUE;
  97 }
  98
  99 void WINAPI get_device_guid(EDataFlow flow, const char *pulse_name, GUID *guid)
 100 {
 101     WCHAR key_name[MAX_PULSE_NAME_LEN + 2];
 102     DWORD type, size = sizeof(*guid);
 103     LSTATUS status;
 104     HKEY drv_key, dev_key;
 105
 106     if (!pulse_name[0]) {
 107         *guid = (flow == eRender) ? pulse_render_guid : pulse_capture_guid;
 108         return;
 109     }
 110
 111     status = RegCreateKeyExW(HKEY_CURRENT_USER, drv_key_devicesW, 0, NULL, 0,
 112                              KEY_WRITE | KEY_WOW64_64KEY, NULL, &drv_key, NULL);
 113     if (status != ERROR_SUCCESS) {
 114         ERR("Failed to open devices registry key: %lu\n", status);
 115         CoCreateGuid(guid);
 116         return;
 117     }
 118
 119     key_name[0] = (flow == eRender) ? '0' : '1';
 120     key_name[1] = ',';
 121     MultiByteToWideChar(CP_UNIXCP, 0, pulse_name, -1, key_name + 2, ARRAY_SIZE(key_name) - 2);
 122
 123     status = RegCreateKeyExW(drv_key, key_name, 0, NULL, 0, KEY_READ | KEY_WRITE | KEY_WOW64_64KEY,
 124                              NULL, &dev_key, NULL);
 125     if (status != ERROR_SUCCESS) {
 126         ERR("Failed to open registry key for device %s: %lu\n", pulse_name, status);
 127         RegCloseKey(drv_key);
 128         CoCreateGuid(guid);
 129         return;
 130     }
 131
 132     status = RegQueryValueExW(dev_key, L"guid", 0, &type, (BYTE*)guid, &size);
 133     if (status != ERROR_SUCCESS || type != REG_BINARY || size != sizeof(*guid)) {
 134         CoCreateGuid(guid);
 135         status = RegSetValueExW(dev_key, L"guid", 0, REG_BINARY, (BYTE*)guid, sizeof(*guid));
 136         if (status != ERROR_SUCCESS)
 137             ERR("Failed to store device GUID for %s to registry: %lu\n", pulse_name, status);
 138     }
 139     RegCloseKey(dev_key);
 140     RegCloseKey(drv_key);
 141 }
 142
 143 BOOL WINAPI get_device_name_from_guid(GUID *guid, char **name, EDataFlow *flow)
 144 {
 145     struct device_cache *device;
 146     WCHAR key_name[MAX_PULSE_NAME_LEN + 2];
 147     DWORD key_name_size;
 148     DWORD index = 0;
 149     HKEY key;
 150
 151     *name = NULL;
 152
 153     /* Return empty string for default PulseAudio device */
 154     if (IsEqualGUID(guid, &pulse_render_guid)) {
 155         *flow = eRender;
 156         if (!(*name = malloc(1)))
 157             return FALSE;
 158     } else if (IsEqualGUID(guid, &pulse_capture_guid)) {
 159         *flow = eCapture;
 160         if (!(*name = malloc(1)))
 161             return FALSE;
 162     }
 163
 164     if (*name) {
 165         *name[0] = '\0';
 166         return TRUE;
 167     }
 168
 169     /* Check the cache first */
 170     LIST_FOR_EACH_ENTRY(device, &g_devices_cache, struct device_cache, entry) {
 171         if (!IsEqualGUID(guid, &device->guid))
 172             continue;
 173         *flow = device->dataflow;
 174         if ((*name = strdup(device->pulse_name)))
 175             return TRUE;
 176
 177         return FALSE;
 178     }
 179
 180     if (RegOpenKeyExW(HKEY_CURRENT_USER, drv_key_devicesW, 0, KEY_READ | KEY_WOW64_64KEY, &key) != ERROR_SUCCESS) {
 181         WARN("No devices found in registry\n");
 182         return FALSE;
 183     }
 184
 185     for (;;) {
 186         DWORD size, type;
 187         LSTATUS status;
 188         GUID reg_guid;
 189         HKEY dev_key;
 190         int len;
 191
 192         key_name_size = ARRAY_SIZE(key_name);
 193         if (RegEnumKeyExW(key, index++, key_name, &key_name_size, NULL, NULL, NULL, NULL) != ERROR_SUCCESS)
 194             break;
 195
 196         if (RegOpenKeyExW(key, key_name, 0, KEY_READ | KEY_WOW64_64KEY, &dev_key) != ERROR_SUCCESS) {
 197             ERR("Couldn't open key: %s\n", wine_dbgstr_w(key_name));
 198             continue;
 199         }
 200
 201         size = sizeof(reg_guid);
 202         status = RegQueryValueExW(dev_key, L"guid", 0, &type, (BYTE *)&reg_guid, &size);
 203         RegCloseKey(dev_key);
 204
 205         if (status == ERROR_SUCCESS && type == REG_BINARY && size == sizeof(reg_guid) && IsEqualGUID(&reg_guid, guid)) {
 206             RegCloseKey(key);
 207
 208             TRACE("Found matching device key: %s\n", wine_dbgstr_w(key_name));
 209
 210             if (key_name[0] == '0')
 211                 *flow = eRender;
 212             else if (key_name[0] == '1')
 213                 *flow = eCapture;
 214             else {
 215                 WARN("Unknown device type: %c\n", key_name[0]);
 216                 return FALSE;
 217             }
 218
 219             if (!(len = WideCharToMultiByte(CP_UNIXCP, 0, key_name + 2, -1, NULL, 0, NULL, NULL)))
 220                     return FALSE;
 221
 222             if (!(*name = malloc(len)))
 223                 return FALSE;
 224
 225             if (!WideCharToMultiByte(CP_UNIXCP, 0, key_name + 2, -1, *name, len, NULL, NULL)) {
 226                 free(*name);
 227                 return FALSE;
 228             }
 229
 230             if ((device = malloc(FIELD_OFFSET(struct device_cache, pulse_name[len])))) {
 231                 device->guid = reg_guid;
 232                 device->dataflow = *flow;
 233                 memcpy(device->pulse_name, *name, len);
 234                 list_add_tail(&g_devices_cache, &device->entry);
 235             }
 236             return TRUE;
 237         }
 238     }
 239
 240     RegCloseKey(key);
 241     WARN("No matching device in registry for GUID %s\n", debugstr_guid(guid));
 242     return FALSE;
 243 }