| 1 | /* |
| 2 | * QEMU DBus audio |
| 3 | * |
| 4 | * Copyright (c) 2021 Red Hat, Inc. |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 7 | * of this software and associated documentation files (the "Software"), to deal |
| 8 | * in the Software without restriction, including without limitation the rights |
| 9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 10 | * copies of the Software, and to permit persons to whom the Software is |
| 11 | * furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in |
| 14 | * all copies or substantial portions of the Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 22 | * THE SOFTWARE. |
| 23 | */ |
| 24 | |
| 25 | #include "qemu/osdep.h" |
| 26 | #include "qemu/error-report.h" |
| 27 | #include "qemu/module.h" |
| 28 | #include "qemu/dbus.h" |
| 29 | #include "qom/object.h" |
| 30 | |
| 31 | #ifdef G_OS_UNIX |
| 32 | #include <gio/gunixfdlist.h> |
| 33 | #endif |
| 34 | |
| 35 | #include "ui/dbus.h" |
| 36 | #include "ui/dbus-display.h" |
| 37 | #include "ui/dbus-display1.h" |
| 38 | |
| 39 | #include "qemu/audio.h" |
| 40 | #include "audio_int.h" |
| 41 | #include "trace.h" |
| 42 | |
| 43 | #define DBUS_DISPLAY1_AUDIO_PATH DBUS_DISPLAY1_ROOT "/Audio" |
| 44 | |
| 45 | #define DBUS_DEFAULT_AUDIO_NSAMPLES 480 |
| 46 | |
| 47 | #define TYPE_AUDIO_DBUS "audio-dbus" |
| 48 | OBJECT_DECLARE_SIMPLE_TYPE(AudioDbus, AUDIO_DBUS) |
| 49 | |
| 50 | static AudioBackendClass *audio_dbus_parent_class; |
| 51 | |
| 52 | struct AudioDbus { |
| 53 | AudioMixengBackend parent_obj; |
| 54 | |
| 55 | GDBusObjectManagerServer *server; |
| 56 | bool p2p; |
| 57 | GDBusObjectSkeleton *audio; |
| 58 | QemuDBusDisplay1Audio *iface; |
| 59 | GHashTable *out_listeners; |
| 60 | GHashTable *in_listeners; |
| 61 | }; |
| 62 | |
| 63 | |
| 64 | typedef struct DBusVoiceOut { |
| 65 | HWVoiceOut hw; |
| 66 | bool enabled; |
| 67 | RateCtl rate; |
| 68 | |
| 69 | void *buf; |
| 70 | size_t buf_pos; |
| 71 | size_t buf_size; |
| 72 | |
| 73 | bool has_volume; |
| 74 | Volume volume; |
| 75 | } DBusVoiceOut; |
| 76 | |
| 77 | typedef struct DBusVoiceIn { |
| 78 | HWVoiceIn hw; |
| 79 | bool enabled; |
| 80 | RateCtl rate; |
| 81 | |
| 82 | bool has_volume; |
| 83 | Volume volume; |
| 84 | } DBusVoiceIn; |
| 85 | |
| 86 | static void *dbus_get_buffer_out(HWVoiceOut *hw, size_t *size) |
| 87 | { |
| 88 | DBusVoiceOut *vo = container_of(hw, DBusVoiceOut, hw); |
| 89 | |
| 90 | if (!vo->buf) { |
| 91 | vo->buf_size = hw->samples * hw->info.bytes_per_frame; |
| 92 | vo->buf = g_malloc(vo->buf_size); |
| 93 | vo->buf_pos = 0; |
| 94 | } |
| 95 | |
| 96 | *size = MIN(vo->buf_size - vo->buf_pos, *size); |
| 97 | *size = audio_rate_get_bytes(&vo->rate, &hw->info, *size); |
| 98 | |
| 99 | return vo->buf + vo->buf_pos; |
| 100 | |
| 101 | } |
| 102 | |
| 103 | static size_t dbus_put_buffer_out(HWVoiceOut *hw, void *buf, size_t size) |
| 104 | { |
| 105 | AudioDbus *da = AUDIO_DBUS(hw->s); |
| 106 | DBusVoiceOut *vo = container_of(hw, DBusVoiceOut, hw); |
| 107 | GHashTableIter iter; |
| 108 | QemuDBusDisplay1AudioOutListener *listener = NULL; |
| 109 | g_autoptr(GBytes) bytes = NULL; |
| 110 | g_autoptr(GVariant) v_data = NULL; |
| 111 | |
| 112 | assert(buf == vo->buf + vo->buf_pos && vo->buf_pos + size <= vo->buf_size); |
| 113 | vo->buf_pos += size; |
| 114 | |
| 115 | trace_dbus_audio_put_buffer_out(vo->buf_pos, vo->buf_size); |
| 116 | |
| 117 | if (vo->buf_pos < vo->buf_size) { |
| 118 | return size; |
| 119 | } |
| 120 | |
| 121 | bytes = g_bytes_new_take(g_steal_pointer(&vo->buf), vo->buf_size); |
| 122 | v_data = g_variant_new_from_bytes(G_VARIANT_TYPE("ay"), bytes, TRUE); |
| 123 | g_variant_ref_sink(v_data); |
| 124 | |
| 125 | g_hash_table_iter_init(&iter, da->out_listeners); |
| 126 | while (g_hash_table_iter_next(&iter, NULL, (void **)&listener)) { |
| 127 | qemu_dbus_display1_audio_out_listener_call_write( |
| 128 | listener, |
| 129 | (uintptr_t)hw, |
| 130 | v_data, |
| 131 | G_DBUS_CALL_FLAGS_NONE, -1, NULL, NULL, NULL); |
| 132 | } |
| 133 | |
| 134 | return size; |
| 135 | } |
| 136 | |
| 137 | #if HOST_BIG_ENDIAN |
| 138 | #define AUDIO_HOST_BE TRUE |
| 139 | #else |
| 140 | #define AUDIO_HOST_BE FALSE |
| 141 | #endif |
| 142 | |
| 143 | static void |
| 144 | dbus_init_out_listener(QemuDBusDisplay1AudioOutListener *listener, |
| 145 | HWVoiceOut *hw) |
| 146 | { |
| 147 | qemu_dbus_display1_audio_out_listener_call_init( |
| 148 | listener, |
| 149 | (uintptr_t)hw, |
| 150 | audio_format_bits(hw->info.af), |
| 151 | audio_format_is_signed(hw->info.af), |
| 152 | audio_format_is_float(hw->info.af), |
| 153 | hw->info.freq, |
| 154 | hw->info.nchannels, |
| 155 | hw->info.bytes_per_frame, |
| 156 | hw->info.bytes_per_second, |
| 157 | hw->info.swap_endianness ? !AUDIO_HOST_BE : AUDIO_HOST_BE, |
| 158 | G_DBUS_CALL_FLAGS_NONE, -1, NULL, NULL, NULL); |
| 159 | } |
| 160 | |
| 161 | static guint |
| 162 | dbus_audio_get_nsamples(AudioDbus *da) |
| 163 | { |
| 164 | AudiodevDBusOptions *opts = &AUDIO_MIXENG_BACKEND(da)->dev->u.dbus; |
| 165 | |
| 166 | if (opts->has_nsamples && opts->nsamples) { |
| 167 | return opts->nsamples; |
| 168 | } else { |
| 169 | return DBUS_DEFAULT_AUDIO_NSAMPLES; |
| 170 | } |
| 171 | } |
| 172 | |
| 173 | static int |
| 174 | dbus_init_out(HWVoiceOut *hw, struct audsettings *as) |
| 175 | { |
| 176 | AudioDbus *da = AUDIO_DBUS(hw->s); |
| 177 | DBusVoiceOut *vo = container_of(hw, DBusVoiceOut, hw); |
| 178 | GHashTableIter iter; |
| 179 | QemuDBusDisplay1AudioOutListener *listener = NULL; |
| 180 | |
| 181 | audio_pcm_init_info(&hw->info, as); |
| 182 | hw->samples = dbus_audio_get_nsamples(da); |
| 183 | audio_rate_start(&vo->rate); |
| 184 | |
| 185 | g_hash_table_iter_init(&iter, da->out_listeners); |
| 186 | while (g_hash_table_iter_next(&iter, NULL, (void **)&listener)) { |
| 187 | dbus_init_out_listener(listener, hw); |
| 188 | } |
| 189 | return 0; |
| 190 | } |
| 191 | |
| 192 | static void |
| 193 | dbus_fini_out(HWVoiceOut *hw) |
| 194 | { |
| 195 | AudioDbus *da = AUDIO_DBUS(hw->s); |
| 196 | DBusVoiceOut *vo = container_of(hw, DBusVoiceOut, hw); |
| 197 | GHashTableIter iter; |
| 198 | QemuDBusDisplay1AudioOutListener *listener = NULL; |
| 199 | |
| 200 | g_hash_table_iter_init(&iter, da->out_listeners); |
| 201 | while (g_hash_table_iter_next(&iter, NULL, (void **)&listener)) { |
| 202 | qemu_dbus_display1_audio_out_listener_call_fini( |
| 203 | listener, |
| 204 | (uintptr_t)hw, |
| 205 | G_DBUS_CALL_FLAGS_NONE, -1, NULL, NULL, NULL); |
| 206 | } |
| 207 | |
| 208 | g_clear_pointer(&vo->buf, g_free); |
| 209 | } |
| 210 | |
| 211 | static void |
| 212 | dbus_enable_out(HWVoiceOut *hw, bool enable) |
| 213 | { |
| 214 | AudioDbus *da = AUDIO_DBUS(hw->s); |
| 215 | DBusVoiceOut *vo = container_of(hw, DBusVoiceOut, hw); |
| 216 | GHashTableIter iter; |
| 217 | QemuDBusDisplay1AudioOutListener *listener = NULL; |
| 218 | |
| 219 | vo->enabled = enable; |
| 220 | if (enable) { |
| 221 | audio_rate_start(&vo->rate); |
| 222 | } |
| 223 | |
| 224 | g_hash_table_iter_init(&iter, da->out_listeners); |
| 225 | while (g_hash_table_iter_next(&iter, NULL, (void **)&listener)) { |
| 226 | qemu_dbus_display1_audio_out_listener_call_set_enabled( |
| 227 | listener, (uintptr_t)hw, enable, |
| 228 | G_DBUS_CALL_FLAGS_NONE, -1, NULL, NULL, NULL); |
| 229 | } |
| 230 | } |
| 231 | |
| 232 | static void |
| 233 | dbus_volume_out_listener(HWVoiceOut *hw, |
| 234 | QemuDBusDisplay1AudioOutListener *listener) |
| 235 | { |
| 236 | DBusVoiceOut *vo = container_of(hw, DBusVoiceOut, hw); |
| 237 | Volume *vol = &vo->volume; |
| 238 | g_autoptr(GBytes) bytes = NULL; |
| 239 | GVariant *v_vol = NULL; |
| 240 | |
| 241 | if (!vo->has_volume) { |
| 242 | return; |
| 243 | } |
| 244 | |
| 245 | assert(vol->channels < sizeof(vol->vol)); |
| 246 | bytes = g_bytes_new(vol->vol, vol->channels); |
| 247 | v_vol = g_variant_new_from_bytes(G_VARIANT_TYPE("ay"), bytes, TRUE); |
| 248 | qemu_dbus_display1_audio_out_listener_call_set_volume( |
| 249 | listener, (uintptr_t)hw, vol->mute, v_vol, |
| 250 | G_DBUS_CALL_FLAGS_NONE, -1, NULL, NULL, NULL); |
| 251 | } |
| 252 | |
| 253 | static void |
| 254 | dbus_volume_out(HWVoiceOut *hw, Volume *vol) |
| 255 | { |
| 256 | AudioDbus *da = AUDIO_DBUS(hw->s); |
| 257 | DBusVoiceOut *vo = container_of(hw, DBusVoiceOut, hw); |
| 258 | GHashTableIter iter; |
| 259 | QemuDBusDisplay1AudioOutListener *listener = NULL; |
| 260 | |
| 261 | vo->has_volume = true; |
| 262 | vo->volume = *vol; |
| 263 | |
| 264 | g_hash_table_iter_init(&iter, da->out_listeners); |
| 265 | while (g_hash_table_iter_next(&iter, NULL, (void **)&listener)) { |
| 266 | dbus_volume_out_listener(hw, listener); |
| 267 | } |
| 268 | } |
| 269 | |
| 270 | static void |
| 271 | dbus_init_in_listener(QemuDBusDisplay1AudioInListener *listener, HWVoiceIn *hw) |
| 272 | { |
| 273 | qemu_dbus_display1_audio_in_listener_call_init( |
| 274 | listener, |
| 275 | (uintptr_t)hw, |
| 276 | audio_format_bits(hw->info.af), |
| 277 | audio_format_is_signed(hw->info.af), |
| 278 | audio_format_is_float(hw->info.af), |
| 279 | hw->info.freq, |
| 280 | hw->info.nchannels, |
| 281 | hw->info.bytes_per_frame, |
| 282 | hw->info.bytes_per_second, |
| 283 | hw->info.swap_endianness ? !AUDIO_HOST_BE : AUDIO_HOST_BE, |
| 284 | G_DBUS_CALL_FLAGS_NONE, -1, NULL, NULL, NULL); |
| 285 | } |
| 286 | |
| 287 | static int |
| 288 | dbus_init_in(HWVoiceIn *hw, struct audsettings *as) |
| 289 | { |
| 290 | AudioDbus *da = AUDIO_DBUS(hw->s); |
| 291 | DBusVoiceIn *vo = container_of(hw, DBusVoiceIn, hw); |
| 292 | GHashTableIter iter; |
| 293 | QemuDBusDisplay1AudioInListener *listener = NULL; |
| 294 | |
| 295 | audio_pcm_init_info(&hw->info, as); |
| 296 | hw->samples = dbus_audio_get_nsamples(da); |
| 297 | audio_rate_start(&vo->rate); |
| 298 | |
| 299 | g_hash_table_iter_init(&iter, da->in_listeners); |
| 300 | while (g_hash_table_iter_next(&iter, NULL, (void **)&listener)) { |
| 301 | dbus_init_in_listener(listener, hw); |
| 302 | } |
| 303 | return 0; |
| 304 | } |
| 305 | |
| 306 | static void |
| 307 | dbus_fini_in(HWVoiceIn *hw) |
| 308 | { |
| 309 | AudioDbus *da = AUDIO_DBUS(hw->s); |
| 310 | GHashTableIter iter; |
| 311 | QemuDBusDisplay1AudioInListener *listener = NULL; |
| 312 | |
| 313 | g_hash_table_iter_init(&iter, da->in_listeners); |
| 314 | while (g_hash_table_iter_next(&iter, NULL, (void **)&listener)) { |
| 315 | qemu_dbus_display1_audio_in_listener_call_fini( |
| 316 | listener, |
| 317 | (uintptr_t)hw, |
| 318 | G_DBUS_CALL_FLAGS_NONE, -1, NULL, NULL, NULL); |
| 319 | } |
| 320 | } |
| 321 | |
| 322 | static void |
| 323 | dbus_volume_in_listener(HWVoiceIn *hw, |
| 324 | QemuDBusDisplay1AudioInListener *listener) |
| 325 | { |
| 326 | DBusVoiceIn *vo = container_of(hw, DBusVoiceIn, hw); |
| 327 | Volume *vol = &vo->volume; |
| 328 | g_autoptr(GBytes) bytes = NULL; |
| 329 | GVariant *v_vol = NULL; |
| 330 | |
| 331 | if (!vo->has_volume) { |
| 332 | return; |
| 333 | } |
| 334 | |
| 335 | assert(vol->channels < sizeof(vol->vol)); |
| 336 | bytes = g_bytes_new(vol->vol, vol->channels); |
| 337 | v_vol = g_variant_new_from_bytes(G_VARIANT_TYPE("ay"), bytes, TRUE); |
| 338 | qemu_dbus_display1_audio_in_listener_call_set_volume( |
| 339 | listener, (uintptr_t)hw, vol->mute, v_vol, |
| 340 | G_DBUS_CALL_FLAGS_NONE, -1, NULL, NULL, NULL); |
| 341 | } |
| 342 | |
| 343 | static void |
| 344 | dbus_volume_in(HWVoiceIn *hw, Volume *vol) |
| 345 | { |
| 346 | AudioDbus *da = AUDIO_DBUS(hw->s); |
| 347 | DBusVoiceIn *vo = container_of(hw, DBusVoiceIn, hw); |
| 348 | GHashTableIter iter; |
| 349 | QemuDBusDisplay1AudioInListener *listener = NULL; |
| 350 | |
| 351 | vo->has_volume = true; |
| 352 | vo->volume = *vol; |
| 353 | |
| 354 | g_hash_table_iter_init(&iter, da->in_listeners); |
| 355 | while (g_hash_table_iter_next(&iter, NULL, (void **)&listener)) { |
| 356 | dbus_volume_in_listener(hw, listener); |
| 357 | } |
| 358 | } |
| 359 | |
| 360 | static size_t |
| 361 | dbus_read(HWVoiceIn *hw, void *buf, size_t size) |
| 362 | { |
| 363 | AudioDbus *da = AUDIO_DBUS(hw->s); |
| 364 | /* DBusVoiceIn *vo = container_of(hw, DBusVoiceIn, hw); */ |
| 365 | GHashTableIter iter; |
| 366 | QemuDBusDisplay1AudioInListener *listener = NULL; |
| 367 | |
| 368 | trace_dbus_audio_read(size); |
| 369 | |
| 370 | /* size = audio_rate_get_bytes(&vo->rate, &hw->info, size); */ |
| 371 | |
| 372 | g_hash_table_iter_init(&iter, da->in_listeners); |
| 373 | while (g_hash_table_iter_next(&iter, NULL, (void **)&listener)) { |
| 374 | g_autoptr(GVariant) v_data = NULL; |
| 375 | const char *data; |
| 376 | gsize n = 0; |
| 377 | |
| 378 | if (qemu_dbus_display1_audio_in_listener_call_read_sync( |
| 379 | listener, |
| 380 | (uintptr_t)hw, |
| 381 | size, |
| 382 | G_DBUS_CALL_FLAGS_NONE, -1, |
| 383 | &v_data, NULL, NULL)) { |
| 384 | data = g_variant_get_fixed_array(v_data, &n, 1); |
| 385 | g_warn_if_fail(n <= size); |
| 386 | size = MIN(n, size); |
| 387 | memcpy(buf, data, size); |
| 388 | break; |
| 389 | } |
| 390 | } |
| 391 | |
| 392 | return size; |
| 393 | } |
| 394 | |
| 395 | static void |
| 396 | dbus_enable_in(HWVoiceIn *hw, bool enable) |
| 397 | { |
| 398 | AudioDbus *da = AUDIO_DBUS(hw->s); |
| 399 | DBusVoiceIn *vo = container_of(hw, DBusVoiceIn, hw); |
| 400 | GHashTableIter iter; |
| 401 | QemuDBusDisplay1AudioInListener *listener = NULL; |
| 402 | |
| 403 | vo->enabled = enable; |
| 404 | if (enable) { |
| 405 | audio_rate_start(&vo->rate); |
| 406 | } |
| 407 | |
| 408 | g_hash_table_iter_init(&iter, da->in_listeners); |
| 409 | while (g_hash_table_iter_next(&iter, NULL, (void **)&listener)) { |
| 410 | qemu_dbus_display1_audio_in_listener_call_set_enabled( |
| 411 | listener, (uintptr_t)hw, enable, |
| 412 | G_DBUS_CALL_FLAGS_NONE, -1, NULL, NULL, NULL); |
| 413 | } |
| 414 | } |
| 415 | |
| 416 | static bool |
| 417 | audio_dbus_realize(AudioBackend *abe, Audiodev *dev, Error **errp) |
| 418 | { |
| 419 | AudioDbus *da = AUDIO_DBUS(abe); |
| 420 | |
| 421 | if (!qemu_using_dbus_display(errp)) { |
| 422 | qapi_free_Audiodev(dev); |
| 423 | return false; |
| 424 | } |
| 425 | |
| 426 | if (!audio_dbus_parent_class->realize(abe, dev, errp)) { |
| 427 | return false; |
| 428 | } |
| 429 | |
| 430 | da->out_listeners = g_hash_table_new_full(g_str_hash, g_str_equal, |
| 431 | g_free, g_object_unref); |
| 432 | da->in_listeners = g_hash_table_new_full(g_str_hash, g_str_equal, |
| 433 | g_free, g_object_unref); |
| 434 | return true; |
| 435 | } |
| 436 | |
| 437 | static void |
| 438 | audio_dbus_finalize(Object *obj) |
| 439 | { |
| 440 | AudioDbus *da = AUDIO_DBUS(obj); |
| 441 | |
| 442 | if (da->server) { |
| 443 | g_dbus_object_manager_server_unexport(da->server, |
| 444 | DBUS_DISPLAY1_AUDIO_PATH); |
| 445 | } |
| 446 | g_clear_object(&da->audio); |
| 447 | g_clear_object(&da->iface); |
| 448 | g_clear_pointer(&da->in_listeners, g_hash_table_unref); |
| 449 | g_clear_pointer(&da->out_listeners, g_hash_table_unref); |
| 450 | g_clear_object(&da->server); |
| 451 | } |
| 452 | |
| 453 | static void |
| 454 | listener_out_vanished_cb(GDBusConnection *connection, |
| 455 | gboolean remote_peer_vanished, |
| 456 | GError *error, |
| 457 | AudioDbus *da) |
| 458 | { |
| 459 | char *name = g_object_get_data(G_OBJECT(connection), "name"); |
| 460 | |
| 461 | g_hash_table_remove(da->out_listeners, name); |
| 462 | } |
| 463 | |
| 464 | static void |
| 465 | listener_in_vanished_cb(GDBusConnection *connection, |
| 466 | gboolean remote_peer_vanished, |
| 467 | GError *error, |
| 468 | AudioDbus *da) |
| 469 | { |
| 470 | char *name = g_object_get_data(G_OBJECT(connection), "name"); |
| 471 | |
| 472 | g_hash_table_remove(da->in_listeners, name); |
| 473 | } |
| 474 | |
| 475 | static gboolean |
| 476 | dbus_audio_register_listener(AudioMixengBackend *s, |
| 477 | GDBusMethodInvocation *invocation, |
| 478 | #ifdef G_OS_UNIX |
| 479 | GUnixFDList *fd_list, |
| 480 | #endif |
| 481 | GVariant *arg_listener, |
| 482 | bool out) |
| 483 | { |
| 484 | AudioDbus *da = AUDIO_DBUS(s); |
| 485 | const char *sender = |
| 486 | da->p2p ? "p2p" : g_dbus_method_invocation_get_sender(invocation); |
| 487 | g_autoptr(GDBusConnection) listener_conn = NULL; |
| 488 | g_autoptr(GError) err = NULL; |
| 489 | g_autoptr(GSocket) socket = NULL; |
| 490 | g_autoptr(GSocketConnection) socket_conn = NULL; |
| 491 | g_autofree char *guid = g_dbus_generate_guid(); |
| 492 | GHashTable *listeners = out ? da->out_listeners : da->in_listeners; |
| 493 | GObject *listener; |
| 494 | int fd; |
| 495 | |
| 496 | trace_dbus_audio_register(sender, out ? "out" : "in"); |
| 497 | |
| 498 | if (g_hash_table_contains(listeners, sender)) { |
| 499 | g_dbus_method_invocation_return_error(invocation, |
| 500 | DBUS_DISPLAY_ERROR, |
| 501 | DBUS_DISPLAY_ERROR_INVALID, |
| 502 | "`%s` is already registered!", |
| 503 | sender); |
| 504 | return DBUS_METHOD_INVOCATION_HANDLED; |
| 505 | } |
| 506 | |
| 507 | #ifdef G_OS_WIN32 |
| 508 | if (!dbus_win32_import_socket(invocation, arg_listener, &fd)) { |
| 509 | return DBUS_METHOD_INVOCATION_HANDLED; |
| 510 | } |
| 511 | #else |
| 512 | fd = g_unix_fd_list_get(fd_list, g_variant_get_handle(arg_listener), &err); |
| 513 | if (err) { |
| 514 | g_dbus_method_invocation_return_error(invocation, |
| 515 | DBUS_DISPLAY_ERROR, |
| 516 | DBUS_DISPLAY_ERROR_FAILED, |
| 517 | "Couldn't get peer fd: %s", |
| 518 | err->message); |
| 519 | return DBUS_METHOD_INVOCATION_HANDLED; |
| 520 | } |
| 521 | #endif |
| 522 | |
| 523 | socket = g_socket_new_from_fd(fd, &err); |
| 524 | if (err) { |
| 525 | g_dbus_method_invocation_return_error(invocation, |
| 526 | DBUS_DISPLAY_ERROR, |
| 527 | DBUS_DISPLAY_ERROR_FAILED, |
| 528 | "Couldn't make a socket: %s", |
| 529 | err->message); |
| 530 | #ifdef G_OS_WIN32 |
| 531 | closesocket(fd); |
| 532 | #else |
| 533 | close(fd); |
| 534 | #endif |
| 535 | return DBUS_METHOD_INVOCATION_HANDLED; |
| 536 | } |
| 537 | socket_conn = g_socket_connection_factory_create_connection(socket); |
| 538 | if (out) { |
| 539 | qemu_dbus_display1_audio_complete_register_out_listener( |
| 540 | da->iface, invocation |
| 541 | #ifdef G_OS_UNIX |
| 542 | , NULL |
| 543 | #endif |
| 544 | ); |
| 545 | } else { |
| 546 | qemu_dbus_display1_audio_complete_register_in_listener( |
| 547 | da->iface, invocation |
| 548 | #ifdef G_OS_UNIX |
| 549 | , NULL |
| 550 | #endif |
| 551 | ); |
| 552 | } |
| 553 | |
| 554 | GDBusConnectionFlags flags = |
| 555 | G_DBUS_CONNECTION_FLAGS_AUTHENTICATION_SERVER; |
| 556 | #ifdef WIN32 |
| 557 | flags |= G_DBUS_CONNECTION_FLAGS_AUTHENTICATION_ALLOW_ANONYMOUS; |
| 558 | #endif |
| 559 | |
| 560 | listener_conn = |
| 561 | g_dbus_connection_new_sync( |
| 562 | G_IO_STREAM(socket_conn), |
| 563 | guid, |
| 564 | flags, |
| 565 | NULL, NULL, &err); |
| 566 | if (err) { |
| 567 | error_report("Failed to setup peer connection: %s", err->message); |
| 568 | return DBUS_METHOD_INVOCATION_HANDLED; |
| 569 | } |
| 570 | |
| 571 | listener = out ? |
| 572 | G_OBJECT(qemu_dbus_display1_audio_out_listener_proxy_new_sync( |
| 573 | listener_conn, |
| 574 | G_DBUS_PROXY_FLAGS_DO_NOT_AUTO_START, |
| 575 | NULL, |
| 576 | "/org/qemu/Display1/AudioOutListener", |
| 577 | NULL, |
| 578 | &err)) : |
| 579 | G_OBJECT(qemu_dbus_display1_audio_in_listener_proxy_new_sync( |
| 580 | listener_conn, |
| 581 | G_DBUS_PROXY_FLAGS_DO_NOT_AUTO_START, |
| 582 | NULL, |
| 583 | "/org/qemu/Display1/AudioInListener", |
| 584 | NULL, |
| 585 | &err)); |
| 586 | if (!listener) { |
| 587 | error_report("Failed to setup proxy: %s", err->message); |
| 588 | return DBUS_METHOD_INVOCATION_HANDLED; |
| 589 | } |
| 590 | |
| 591 | if (out) { |
| 592 | HWVoiceOut *hw; |
| 593 | |
| 594 | QLIST_FOREACH(hw, &s->hw_head_out, entries) { |
| 595 | DBusVoiceOut *vo = container_of(hw, DBusVoiceOut, hw); |
| 596 | QemuDBusDisplay1AudioOutListener *l = |
| 597 | QEMU_DBUS_DISPLAY1_AUDIO_OUT_LISTENER(listener); |
| 598 | |
| 599 | dbus_init_out_listener(l, hw); |
| 600 | qemu_dbus_display1_audio_out_listener_call_set_enabled( |
| 601 | l, (uintptr_t)hw, vo->enabled, |
| 602 | G_DBUS_CALL_FLAGS_NONE, -1, NULL, NULL, NULL); |
| 603 | } |
| 604 | } else { |
| 605 | HWVoiceIn *hw; |
| 606 | |
| 607 | QLIST_FOREACH(hw, &s->hw_head_in, entries) { |
| 608 | DBusVoiceIn *vo = container_of(hw, DBusVoiceIn, hw); |
| 609 | QemuDBusDisplay1AudioInListener *l = |
| 610 | QEMU_DBUS_DISPLAY1_AUDIO_IN_LISTENER(listener); |
| 611 | |
| 612 | dbus_init_in_listener( |
| 613 | QEMU_DBUS_DISPLAY1_AUDIO_IN_LISTENER(listener), hw); |
| 614 | qemu_dbus_display1_audio_in_listener_call_set_enabled( |
| 615 | l, (uintptr_t)hw, vo->enabled, |
| 616 | G_DBUS_CALL_FLAGS_NONE, -1, NULL, NULL, NULL); |
| 617 | } |
| 618 | } |
| 619 | |
| 620 | g_object_set_data_full(G_OBJECT(listener_conn), "name", |
| 621 | g_strdup(sender), g_free); |
| 622 | g_hash_table_insert(listeners, g_strdup(sender), listener); |
| 623 | g_object_connect(listener_conn, |
| 624 | "signal::closed", |
| 625 | out ? listener_out_vanished_cb : listener_in_vanished_cb, |
| 626 | da, |
| 627 | NULL); |
| 628 | |
| 629 | return DBUS_METHOD_INVOCATION_HANDLED; |
| 630 | } |
| 631 | |
| 632 | static gboolean |
| 633 | dbus_audio_register_out_listener(AudioMixengBackend *s, |
| 634 | GDBusMethodInvocation *invocation, |
| 635 | #ifdef G_OS_UNIX |
| 636 | GUnixFDList *fd_list, |
| 637 | #endif |
| 638 | GVariant *arg_listener) |
| 639 | { |
| 640 | return dbus_audio_register_listener(s, invocation, |
| 641 | #ifdef G_OS_UNIX |
| 642 | fd_list, |
| 643 | #endif |
| 644 | arg_listener, true); |
| 645 | |
| 646 | } |
| 647 | |
| 648 | static gboolean |
| 649 | dbus_audio_register_in_listener(AudioMixengBackend *s, |
| 650 | GDBusMethodInvocation *invocation, |
| 651 | #ifdef G_OS_UNIX |
| 652 | GUnixFDList *fd_list, |
| 653 | #endif |
| 654 | GVariant *arg_listener) |
| 655 | { |
| 656 | return dbus_audio_register_listener(s, invocation, |
| 657 | #ifdef G_OS_UNIX |
| 658 | fd_list, |
| 659 | #endif |
| 660 | arg_listener, false); |
| 661 | } |
| 662 | |
| 663 | static bool |
| 664 | dbus_audio_set_server(AudioBackend *s, |
| 665 | GDBusObjectManagerServer *server, |
| 666 | bool p2p, |
| 667 | Error **errp) |
| 668 | { |
| 669 | AudioDbus *da = AUDIO_DBUS(s); |
| 670 | |
| 671 | g_assert(!da->server); |
| 672 | |
| 673 | da->server = g_object_ref(server); |
| 674 | da->p2p = p2p; |
| 675 | |
| 676 | da->audio = g_dbus_object_skeleton_new(DBUS_DISPLAY1_AUDIO_PATH); |
| 677 | da->iface = qemu_dbus_display1_audio_skeleton_new(); |
| 678 | g_object_connect(da->iface, |
| 679 | "swapped-signal::handle-register-in-listener", |
| 680 | dbus_audio_register_in_listener, s, |
| 681 | "swapped-signal::handle-register-out-listener", |
| 682 | dbus_audio_register_out_listener, s, |
| 683 | NULL); |
| 684 | qemu_dbus_display1_audio_set_nsamples(da->iface, dbus_audio_get_nsamples(da)); |
| 685 | |
| 686 | g_dbus_object_skeleton_add_interface(G_DBUS_OBJECT_SKELETON(da->audio), |
| 687 | G_DBUS_INTERFACE_SKELETON(da->iface)); |
| 688 | g_dbus_object_manager_server_export(da->server, da->audio); |
| 689 | |
| 690 | return true; |
| 691 | } |
| 692 | |
| 693 | static void audio_dbus_class_init(ObjectClass *klass, const void *data) |
| 694 | { |
| 695 | AudioBackendClass *b = AUDIO_BACKEND_CLASS(klass); |
| 696 | AudioMixengBackendClass *k = AUDIO_MIXENG_BACKEND_CLASS(klass); |
| 697 | |
| 698 | audio_dbus_parent_class = AUDIO_BACKEND_CLASS(object_class_get_parent(klass)); |
| 699 | |
| 700 | b->realize = audio_dbus_realize; |
| 701 | b->set_dbus_server = dbus_audio_set_server; |
| 702 | k->max_voices_out = INT_MAX; |
| 703 | k->max_voices_in = INT_MAX; |
| 704 | k->voice_size_out = sizeof(DBusVoiceOut); |
| 705 | k->voice_size_in = sizeof(DBusVoiceIn); |
| 706 | |
| 707 | k->init_out = dbus_init_out; |
| 708 | k->fini_out = dbus_fini_out; |
| 709 | k->write = audio_generic_write; |
| 710 | k->get_buffer_out = dbus_get_buffer_out; |
| 711 | k->put_buffer_out = dbus_put_buffer_out; |
| 712 | k->enable_out = dbus_enable_out; |
| 713 | k->volume_out = dbus_volume_out; |
| 714 | |
| 715 | k->init_in = dbus_init_in; |
| 716 | k->fini_in = dbus_fini_in; |
| 717 | k->read = dbus_read; |
| 718 | k->run_buffer_in = audio_generic_run_buffer_in; |
| 719 | k->enable_in = dbus_enable_in; |
| 720 | k->volume_in = dbus_volume_in; |
| 721 | } |
| 722 | |
| 723 | static const TypeInfo audio_types[] = { |
| 724 | { |
| 725 | .name = TYPE_AUDIO_DBUS, |
| 726 | .parent = TYPE_AUDIO_MIXENG_BACKEND, |
| 727 | .instance_size = sizeof(AudioDbus), |
| 728 | .instance_finalize = audio_dbus_finalize, |
| 729 | .class_init = audio_dbus_class_init, |
| 730 | }, |
| 731 | }; |
| 732 | |
| 733 | DEFINE_TYPES(audio_types) |
| 734 | |
| 735 | module_dep("ui-dbus") |
| 736 | module_obj(TYPE_AUDIO_DBUS) |