1 /* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #define LOG_TAG "legacy_audio_policy_hal" 18 //#define LOG_NDEBUG 0 19 20 #include <stdint.h> 21 22 #include <hardware/hardware.h> 23 #include <system/audio.h> 24 #include <system/audio_policy.h> 25 #include <hardware/audio_policy.h> 26 27 #include <hardware_legacy/AudioPolicyInterface.h> 28 #include <hardware_legacy/AudioSystemLegacy.h> 29 30 #include "AudioPolicyCompatClient.h" 31 32 namespace android_audio_legacy { 33 34 extern "C" { 35 36 struct legacy_ap_module { 37 struct audio_policy_module module; 38 }; 39 40 struct legacy_ap_device { 41 struct audio_policy_device device; 42 }; 43 44 struct legacy_audio_policy { 45 struct audio_policy policy; 46 47 void *service; 48 struct audio_policy_service_ops *aps_ops; 49 AudioPolicyCompatClient *service_client; 50 AudioPolicyInterface *apm; 51 }; 52 53 static inline struct legacy_audio_policy * to_lap(struct audio_policy *pol) 54 { 55 return reinterpret_cast<struct legacy_audio_policy *>(pol); 56 } 57 58 static inline const struct legacy_audio_policy * to_clap(const struct audio_policy *pol) 59 { 60 return reinterpret_cast<const struct legacy_audio_policy *>(pol); 61 } 62 63 64 static int ap_set_device_connection_state(struct audio_policy *pol, 65 audio_devices_t device, 66 audio_policy_dev_state_t state, 67 const char *device_address) 68 { 69 struct legacy_audio_policy *lap = to_lap(pol); 70 return lap->apm->setDeviceConnectionState( 71 (AudioSystem::audio_devices)device, 72 (AudioSystem::device_connection_state)state, 73 device_address); 74 } 75 76 static audio_policy_dev_state_t ap_get_device_connection_state( 77 const struct audio_policy *pol, 78 audio_devices_t device, 79 const char *device_address) 80 { 81 const struct legacy_audio_policy *lap = to_clap(pol); 82 return (audio_policy_dev_state_t)lap->apm->getDeviceConnectionState( 83 (AudioSystem::audio_devices)device, 84 device_address); 85 } 86 87 static void ap_set_phone_state(struct audio_policy *pol, audio_mode_t state) 88 { 89 struct legacy_audio_policy *lap = to_lap(pol); 90 // as this is the legacy API, don't change it to use audio_mode_t instead of int 91 lap->apm->setPhoneState((int) state); 92 } 93 94 /* indicate a change in ringer mode */ 95 static void ap_set_ringer_mode(struct audio_policy *pol, uint32_t mode, 96 uint32_t mask) 97 { 98 // deprecated, never called 99 } 100 101 /* force using a specific device category for the specified usage */ 102 static void ap_set_force_use(struct audio_policy *pol, 103 audio_policy_force_use_t usage, 104 audio_policy_forced_cfg_t config) 105 { 106 struct legacy_audio_policy *lap = to_lap(pol); 107 lap->apm->setForceUse((AudioSystem::force_use)usage, 108 (AudioSystem::forced_config)config); 109 } 110 111 /* retreive current device category forced for a given usage */ 112 static audio_policy_forced_cfg_t ap_get_force_use( 113 const struct audio_policy *pol, 114 audio_policy_force_use_t usage) 115 { 116 const struct legacy_audio_policy *lap = to_clap(pol); 117 return (audio_policy_forced_cfg_t)lap->apm->getForceUse( 118 (AudioSystem::force_use)usage); 119 } 120 121 /* if can_mute is true, then audio streams that are marked ENFORCED_AUDIBLE 122 * can still be muted. */ 123 static void ap_set_can_mute_enforced_audible(struct audio_policy *pol, 124 bool can_mute) 125 { 126 struct legacy_audio_policy *lap = to_lap(pol); 127 lap->apm->setSystemProperty("ro.camera.sound.forced", can_mute ? "0" : "1"); 128 } 129 130 static int ap_init_check(const struct audio_policy *pol) 131 { 132 const struct legacy_audio_policy *lap = to_clap(pol); 133 return lap->apm->initCheck(); 134 } 135 136 static audio_io_handle_t ap_get_output(struct audio_policy *pol, 137 audio_stream_type_t stream, 138 uint32_t sampling_rate, 139 audio_format_t format, 140 audio_channel_mask_t channelMask, 141 audio_output_flags_t flags, 142 const audio_offload_info_t *offloadInfo) 143 { 144 struct legacy_audio_policy *lap = to_lap(pol); 145 146 ALOGV("%s: tid %d", __func__, gettid()); 147 return lap->apm->getOutput((AudioSystem::stream_type)stream, 148 sampling_rate, format, channelMask, 149 (AudioSystem::output_flags)flags, 150 offloadInfo); 151 } 152 153 static int ap_start_output(struct audio_policy *pol, audio_io_handle_t output, 154 audio_stream_type_t stream, int session) 155 { 156 struct legacy_audio_policy *lap = to_lap(pol); 157 return lap->apm->startOutput(output, (AudioSystem::stream_type)stream, 158 session); 159 } 160 161 static int ap_stop_output(struct audio_policy *pol, audio_io_handle_t output, 162 audio_stream_type_t stream, int session) 163 { 164 struct legacy_audio_policy *lap = to_lap(pol); 165 return lap->apm->stopOutput(output, (AudioSystem::stream_type)stream, 166 session); 167 } 168 169 static void ap_release_output(struct audio_policy *pol, 170 audio_io_handle_t output) 171 { 172 struct legacy_audio_policy *lap = to_lap(pol); 173 lap->apm->releaseOutput(output); 174 } 175 176 static audio_io_handle_t ap_get_input(struct audio_policy *pol, audio_source_t inputSource, 177 uint32_t sampling_rate, 178 audio_format_t format, 179 audio_channel_mask_t channelMask, 180 audio_in_acoustics_t acoustics) 181 { 182 struct legacy_audio_policy *lap = to_lap(pol); 183 return lap->apm->getInput((int) inputSource, sampling_rate, format, channelMask, 184 (AudioSystem::audio_in_acoustics)acoustics); 185 } 186 187 static int ap_start_input(struct audio_policy *pol, audio_io_handle_t input) 188 { 189 struct legacy_audio_policy *lap = to_lap(pol); 190 return lap->apm->startInput(input); 191 } 192 193 static int ap_stop_input(struct audio_policy *pol, audio_io_handle_t input) 194 { 195 struct legacy_audio_policy *lap = to_lap(pol); 196 return lap->apm->stopInput(input); 197 } 198 199 static void ap_release_input(struct audio_policy *pol, audio_io_handle_t input) 200 { 201 struct legacy_audio_policy *lap = to_lap(pol); 202 lap->apm->releaseInput(input); 203 } 204 205 static void ap_init_stream_volume(struct audio_policy *pol, 206 audio_stream_type_t stream, int index_min, 207 int index_max) 208 { 209 struct legacy_audio_policy *lap = to_lap(pol); 210 lap->apm->initStreamVolume((AudioSystem::stream_type)stream, index_min, 211 index_max); 212 } 213 214 static int ap_set_stream_volume_index(struct audio_policy *pol, 215 audio_stream_type_t stream, 216 int index) 217 { 218 struct legacy_audio_policy *lap = to_lap(pol); 219 return lap->apm->setStreamVolumeIndex((AudioSystem::stream_type)stream, 220 index, 221 AUDIO_DEVICE_OUT_DEFAULT); 222 } 223 224 static int ap_get_stream_volume_index(const struct audio_policy *pol, 225 audio_stream_type_t stream, 226 int *index) 227 { 228 const struct legacy_audio_policy *lap = to_clap(pol); 229 return lap->apm->getStreamVolumeIndex((AudioSystem::stream_type)stream, 230 index, 231 AUDIO_DEVICE_OUT_DEFAULT); 232 } 233 234 static int ap_set_stream_volume_index_for_device(struct audio_policy *pol, 235 audio_stream_type_t stream, 236 int index, 237 audio_devices_t device) 238 { 239 struct legacy_audio_policy *lap = to_lap(pol); 240 return lap->apm->setStreamVolumeIndex((AudioSystem::stream_type)stream, 241 index, 242 device); 243 } 244 245 static int ap_get_stream_volume_index_for_device(const struct audio_policy *pol, 246 audio_stream_type_t stream, 247 int *index, 248 audio_devices_t device) 249 { 250 const struct legacy_audio_policy *lap = to_clap(pol); 251 return lap->apm->getStreamVolumeIndex((AudioSystem::stream_type)stream, 252 index, 253 device); 254 } 255 256 static uint32_t ap_get_strategy_for_stream(const struct audio_policy *pol, 257 audio_stream_type_t stream) 258 { 259 const struct legacy_audio_policy *lap = to_clap(pol); 260 return lap->apm->getStrategyForStream((AudioSystem::stream_type)stream); 261 } 262 263 static audio_devices_t ap_get_devices_for_stream(const struct audio_policy *pol, 264 audio_stream_type_t stream) 265 { 266 const struct legacy_audio_policy *lap = to_clap(pol); 267 return lap->apm->getDevicesForStream((AudioSystem::stream_type)stream); 268 } 269 270 static audio_io_handle_t ap_get_output_for_effect(struct audio_policy *pol, 271 const struct effect_descriptor_s *desc) 272 { 273 struct legacy_audio_policy *lap = to_lap(pol); 274 return lap->apm->getOutputForEffect(desc); 275 } 276 277 static int ap_register_effect(struct audio_policy *pol, 278 const struct effect_descriptor_s *desc, 279 audio_io_handle_t io, 280 uint32_t strategy, 281 int session, 282 int id) 283 { 284 struct legacy_audio_policy *lap = to_lap(pol); 285 return lap->apm->registerEffect(desc, io, strategy, session, id); 286 } 287 288 static int ap_unregister_effect(struct audio_policy *pol, int id) 289 { 290 struct legacy_audio_policy *lap = to_lap(pol); 291 return lap->apm->unregisterEffect(id); 292 } 293 294 static int ap_set_effect_enabled(struct audio_policy *pol, int id, bool enabled) 295 { 296 struct legacy_audio_policy *lap = to_lap(pol); 297 return lap->apm->setEffectEnabled(id, enabled); 298 } 299 300 static bool ap_is_stream_active(const struct audio_policy *pol, audio_stream_type_t stream, 301 uint32_t in_past_ms) 302 { 303 const struct legacy_audio_policy *lap = to_clap(pol); 304 return lap->apm->isStreamActive((int) stream, in_past_ms); 305 } 306 307 static bool ap_is_stream_active_remotely(const struct audio_policy *pol, audio_stream_type_t stream, 308 uint32_t in_past_ms) 309 { 310 const struct legacy_audio_policy *lap = to_clap(pol); 311 return lap->apm->isStreamActiveRemotely((int) stream, in_past_ms); 312 } 313 314 static bool ap_is_source_active(const struct audio_policy *pol, audio_source_t source) 315 { 316 const struct legacy_audio_policy *lap = to_clap(pol); 317 return lap->apm->isSourceActive(source); 318 } 319 320 static int ap_dump(const struct audio_policy *pol, int fd) 321 { 322 const struct legacy_audio_policy *lap = to_clap(pol); 323 return lap->apm->dump(fd); 324 } 325 326 static bool ap_is_offload_supported(const struct audio_policy *pol, 327 const audio_offload_info_t *info) 328 { 329 const struct legacy_audio_policy *lap = to_clap(pol); 330 return lap->apm->isOffloadSupported(*info); 331 } 332 333 static int create_legacy_ap(const struct audio_policy_device *device, 334 struct audio_policy_service_ops *aps_ops, 335 void *service, 336 struct audio_policy **ap) 337 { 338 struct legacy_audio_policy *lap; 339 int ret; 340 341 if (!service || !aps_ops) 342 return -EINVAL; 343 344 lap = (struct legacy_audio_policy *)calloc(1, sizeof(*lap)); 345 if (!lap) 346 return -ENOMEM; 347 348 lap->policy.set_device_connection_state = ap_set_device_connection_state; 349 lap->policy.get_device_connection_state = ap_get_device_connection_state; 350 lap->policy.set_phone_state = ap_set_phone_state; 351 lap->policy.set_ringer_mode = ap_set_ringer_mode; 352 lap->policy.set_force_use = ap_set_force_use; 353 lap->policy.get_force_use = ap_get_force_use; 354 lap->policy.set_can_mute_enforced_audible = 355 ap_set_can_mute_enforced_audible; 356 lap->policy.init_check = ap_init_check; 357 lap->policy.get_output = ap_get_output; 358 lap->policy.start_output = ap_start_output; 359 lap->policy.stop_output = ap_stop_output; 360 lap->policy.release_output = ap_release_output; 361 lap->policy.get_input = ap_get_input; 362 lap->policy.start_input = ap_start_input; 363 lap->policy.stop_input = ap_stop_input; 364 lap->policy.release_input = ap_release_input; 365 lap->policy.init_stream_volume = ap_init_stream_volume; 366 lap->policy.set_stream_volume_index = ap_set_stream_volume_index; 367 lap->policy.get_stream_volume_index = ap_get_stream_volume_index; 368 lap->policy.set_stream_volume_index_for_device = ap_set_stream_volume_index_for_device; 369 lap->policy.get_stream_volume_index_for_device = ap_get_stream_volume_index_for_device; 370 lap->policy.get_strategy_for_stream = ap_get_strategy_for_stream; 371 lap->policy.get_devices_for_stream = ap_get_devices_for_stream; 372 lap->policy.get_output_for_effect = ap_get_output_for_effect; 373 lap->policy.register_effect = ap_register_effect; 374 lap->policy.unregister_effect = ap_unregister_effect; 375 lap->policy.set_effect_enabled = ap_set_effect_enabled; 376 lap->policy.is_stream_active = ap_is_stream_active; 377 lap->policy.is_stream_active_remotely = ap_is_stream_active_remotely; 378 lap->policy.is_source_active = ap_is_source_active; 379 lap->policy.dump = ap_dump; 380 lap->policy.is_offload_supported = ap_is_offload_supported; 381 382 lap->service = service; 383 lap->aps_ops = aps_ops; 384 lap->service_client = 385 new AudioPolicyCompatClient(aps_ops, service); 386 if (!lap->service_client) { 387 ret = -ENOMEM; 388 goto err_new_compat_client; 389 } 390 391 lap->apm = createAudioPolicyManager(lap->service_client); 392 if (!lap->apm) { 393 ret = -ENOMEM; 394 goto err_create_apm; 395 } 396 397 *ap = &lap->policy; 398 return 0; 399 400 err_create_apm: 401 delete lap->service_client; 402 err_new_compat_client: 403 free(lap); 404 *ap = NULL; 405 return ret; 406 } 407 408 static int destroy_legacy_ap(const struct audio_policy_device *ap_dev, 409 struct audio_policy *ap) 410 { 411 struct legacy_audio_policy *lap = to_lap(ap); 412 413 if (!lap) 414 return 0; 415 416 if (lap->apm) 417 destroyAudioPolicyManager(lap->apm); 418 if (lap->service_client) 419 delete lap->service_client; 420 free(lap); 421 return 0; 422 } 423 424 static int legacy_ap_dev_close(hw_device_t* device) 425 { 426 if (device) 427 free(device); 428 return 0; 429 } 430 431 static int legacy_ap_dev_open(const hw_module_t* module, const char* name, 432 hw_device_t** device) 433 { 434 struct legacy_ap_device *dev; 435 436 if (strcmp(name, AUDIO_POLICY_INTERFACE) != 0) 437 return -EINVAL; 438 439 dev = (struct legacy_ap_device *)calloc(1, sizeof(*dev)); 440 if (!dev) 441 return -ENOMEM; 442 443 dev->device.common.tag = HARDWARE_DEVICE_TAG; 444 dev->device.common.version = 0; 445 dev->device.common.module = const_cast<hw_module_t*>(module); 446 dev->device.common.close = legacy_ap_dev_close; 447 dev->device.create_audio_policy = create_legacy_ap; 448 dev->device.destroy_audio_policy = destroy_legacy_ap; 449 450 *device = &dev->device.common; 451 452 return 0; 453 } 454 455 static struct hw_module_methods_t legacy_ap_module_methods = { 456 .open = legacy_ap_dev_open 457 }; 458 459 struct legacy_ap_module HAL_MODULE_INFO_SYM = { 460 .module = { 461 .common = { 462 .tag = HARDWARE_MODULE_TAG, 463 .version_major = 1, 464 .version_minor = 0, 465 .id = AUDIO_POLICY_HARDWARE_MODULE_ID, 466 .name = "LEGACY Audio Policy HAL", 467 .author = "The Android Open Source Project", 468 .methods = &legacy_ap_module_methods, 469 .dso = NULL, 470 .reserved = {0}, 471 }, 472 }, 473 }; 474 475 }; // extern "C" 476 477 }; // namespace android_audio_legacy 478
