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     WCHAR buf[MAX_PATH];
  76     WCHAR *filename;
  77
  78     switch (reason)
  79     {
  80     case DLL_PROCESS_ATTACH:
  81         DisableThreadLibraryCalls(dll);
  82         if (__wine_init_unix_call())
  83             return FALSE;
  84
  85         GetModuleFileNameW(dll, buf, ARRAY_SIZE(buf));
  86
  87         filename = wcsrchr(buf, '\\');
  88         filename = filename ? filename + 1 : buf;
  89
  90         swprintf(drv_key_devicesW, ARRAY_SIZE(drv_key_devicesW),
  91                  L"Software\\Wine\\Drivers\\%s\\devices", filename);
  92         break;
  93     case DLL_PROCESS_DETACH:
  94         if (!reserved)
  95         {
  96             struct device_cache *device, *device_next;
  97
  98             LIST_FOR_EACH_ENTRY_SAFE(device, device_next, &g_devices_cache, struct device_cache, entry)
  99                 free(device);
 100         }
 101         break;
 102     }
 103     return TRUE;
 104 }
 105
 106 void WINAPI get_device_guid(EDataFlow flow, const char *pulse_name, GUID *guid)
 107 {
 108     WCHAR key_name[MAX_PULSE_NAME_LEN + 2];
 109     DWORD type, size = sizeof(*guid);
 110     LSTATUS status;
 111     HKEY drv_key, dev_key;
 112
 113     if (!pulse_name[0]) {
 114         *guid = (flow == eRender) ? pulse_render_guid : pulse_capture_guid;
 115         return;
 116     }
 117
 118     status = RegCreateKeyExW(HKEY_CURRENT_USER, drv_key_devicesW, 0, NULL, 0,
 119                              KEY_WRITE | KEY_WOW64_64KEY, NULL, &drv_key, NULL);
 120     if (status != ERROR_SUCCESS) {
 121         ERR("Failed to open devices registry key: %lu\n", status);
 122         CoCreateGuid(guid);
 123         return;
 124     }
 125
 126     key_name[0] = (flow == eRender) ? '0' : '1';
 127     key_name[1] = ',';
 128     MultiByteToWideChar(CP_UNIXCP, 0, pulse_name, -1, key_name + 2, ARRAY_SIZE(key_name) - 2);
 129
 130     status = RegCreateKeyExW(drv_key, key_name, 0, NULL, 0, KEY_READ | KEY_WRITE | KEY_WOW64_64KEY,
 131                              NULL, &dev_key, NULL);
 132     if (status != ERROR_SUCCESS) {
 133         ERR("Failed to open registry key for device %s: %lu\n", pulse_name, status);
 134         RegCloseKey(drv_key);
 135         CoCreateGuid(guid);
 136         return;
 137     }
 138
 139     status = RegQueryValueExW(dev_key, L"guid", 0, &type, (BYTE*)guid, &size);
 140     if (status != ERROR_SUCCESS || type != REG_BINARY || size != sizeof(*guid)) {
 141         CoCreateGuid(guid);
 142         status = RegSetValueExW(dev_key, L"guid", 0, REG_BINARY, (BYTE*)guid, sizeof(*guid));
 143         if (status != ERROR_SUCCESS)
 144             ERR("Failed to store device GUID for %s to registry: %lu\n", pulse_name, status);
 145     }
 146     RegCloseKey(dev_key);
 147     RegCloseKey(drv_key);
 148 }
 149
 150 BOOL WINAPI get_device_name_from_guid(GUID *guid, char **name, EDataFlow *flow)
 151 {
 152     struct device_cache *device;
 153     WCHAR key_name[MAX_PULSE_NAME_LEN + 2];
 154     DWORD key_name_size;
 155     DWORD index = 0;
 156     HKEY key;
 157
 158     *name = NULL;
 159
 160     /* Return empty string for default PulseAudio device */
 161     if (IsEqualGUID(guid, &pulse_render_guid)) {
 162         *flow = eRender;
 163         if (!(*name = malloc(1)))
 164             return FALSE;
 165     } else if (IsEqualGUID(guid, &pulse_capture_guid)) {
 166         *flow = eCapture;
 167         if (!(*name = malloc(1)))
 168             return FALSE;
 169     }
 170
 171     if (*name) {
 172         *name[0] = '\0';
 173         return TRUE;
 174     }
 175
 176     /* Check the cache first */
 177     LIST_FOR_EACH_ENTRY(device, &g_devices_cache, struct device_cache, entry) {
 178         if (!IsEqualGUID(guid, &device->guid))
 179             continue;
 180         *flow = device->dataflow;
 181         if ((*name = strdup(device->pulse_name)))
 182             return TRUE;
 183
 184         return FALSE;
 185     }
 186
 187     if (RegOpenKeyExW(HKEY_CURRENT_USER, drv_key_devicesW, 0, KEY_READ | KEY_WOW64_64KEY, &key) != ERROR_SUCCESS) {
 188         WARN("No devices found in registry\n");
 189         return FALSE;
 190     }
 191
 192     for (;;) {
 193         DWORD size, type;
 194         LSTATUS status;
 195         GUID reg_guid;
 196         HKEY dev_key;
 197         int len;
 198
 199         key_name_size = ARRAY_SIZE(key_name);
 200         if (RegEnumKeyExW(key, index++, key_name, &key_name_size, NULL, NULL, NULL, NULL) != ERROR_SUCCESS)
 201             break;
 202
 203         if (RegOpenKeyExW(key, key_name, 0, KEY_READ | KEY_WOW64_64KEY, &dev_key) != ERROR_SUCCESS) {
 204             ERR("Couldn't open key: %s\n", wine_dbgstr_w(key_name));
 205             continue;
 206         }
 207
 208         size = sizeof(reg_guid);
 209         status = RegQueryValueExW(dev_key, L"guid", 0, &type, (BYTE *)&reg_guid, &size);
 210         RegCloseKey(dev_key);
 211
 212         if (status == ERROR_SUCCESS && type == REG_BINARY && size == sizeof(reg_guid) && IsEqualGUID(&reg_guid, guid)) {
 213             RegCloseKey(key);
 214
 215             TRACE("Found matching device key: %s\n", wine_dbgstr_w(key_name));
 216
 217             if (key_name[0] == '0')
 218                 *flow = eRender;
 219             else if (key_name[0] == '1')
 220                 *flow = eCapture;
 221             else {
 222                 WARN("Unknown device type: %c\n", key_name[0]);
 223                 return FALSE;
 224             }
 225
 226             if (!(len = WideCharToMultiByte(CP_UNIXCP, 0, key_name + 2, -1, NULL, 0, NULL, NULL)))
 227                     return FALSE;
 228
 229             if (!(*name = malloc(len)))
 230                 return FALSE;
 231
 232             if (!WideCharToMultiByte(CP_UNIXCP, 0, key_name + 2, -1, *name, len, NULL, NULL)) {
 233                 free(*name);
 234                 return FALSE;
 235             }
 236
 237             if ((device = malloc(FIELD_OFFSET(struct device_cache, pulse_name[len])))) {
 238                 device->guid = reg_guid;
 239                 device->dataflow = *flow;
 240                 memcpy(device->pulse_name, *name, len);
 241                 list_add_tail(&g_devices_cache, &device->entry);
 242             }
 243             return TRUE;
 244         }
 245     }
 246
 247     RegCloseKey(key);
 248     WARN("No matching device in registry for GUID %s\n", debugstr_guid(guid));
 249     return FALSE;
 250 }