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, int state) 88 { 89 struct legacy_audio_policy *lap = to_lap(pol); 90 lap->apm->setPhoneState(state); 91 } 92 93 /* indicate a change in ringer mode */ 94 static void ap_set_ringer_mode(struct audio_policy *pol, uint32_t mode, 95 uint32_t mask) 96 { 97 struct legacy_audio_policy *lap = to_lap(pol); 98 lap->apm->setRingerMode(mode, mask); 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 uint32_t format, 140 uint32_t channels, 141 audio_policy_output_flags_t flags) 142 { 143 struct legacy_audio_policy *lap = to_lap(pol); 144 145 LOGV("%s: tid %d", __func__, gettid()); 146 return lap->apm->getOutput((AudioSystem::stream_type)stream, 147 sampling_rate, format, channels, 148 (AudioSystem::output_flags)flags); 149 } 150 151 static int ap_start_output(struct audio_policy *pol, audio_io_handle_t output, 152 audio_stream_type_t stream, int session) 153 { 154 struct legacy_audio_policy *lap = to_lap(pol); 155 return lap->apm->startOutput(output, (AudioSystem::stream_type)stream, 156 session); 157 } 158 159 static int ap_stop_output(struct audio_policy *pol, audio_io_handle_t output, 160 audio_stream_type_t stream, int session) 161 { 162 struct legacy_audio_policy *lap = to_lap(pol); 163 return lap->apm->stopOutput(output, (AudioSystem::stream_type)stream, 164 session); 165 } 166 167 static void ap_release_output(struct audio_policy *pol, 168 audio_io_handle_t output) 169 { 170 struct legacy_audio_policy *lap = to_lap(pol); 171 lap->apm->releaseOutput(output); 172 } 173 174 static audio_io_handle_t ap_get_input(struct audio_policy *pol, int inputSource, 175 uint32_t sampling_rate, 176 uint32_t format, 177 uint32_t channels, 178 audio_in_acoustics_t acoustics) 179 { 180 struct legacy_audio_policy *lap = to_lap(pol); 181 return lap->apm->getInput(inputSource, sampling_rate, format, channels, 182 (AudioSystem::audio_in_acoustics)acoustics); 183 } 184 185 static int ap_start_input(struct audio_policy *pol, audio_io_handle_t input) 186 { 187 struct legacy_audio_policy *lap = to_lap(pol); 188 return lap->apm->startInput(input); 189 } 190 191 static int ap_stop_input(struct audio_policy *pol, audio_io_handle_t input) 192 { 193 struct legacy_audio_policy *lap = to_lap(pol); 194 return lap->apm->stopInput(input); 195 } 196 197 static void ap_release_input(struct audio_policy *pol, audio_io_handle_t input) 198 { 199 struct legacy_audio_policy *lap = to_lap(pol); 200 lap->apm->releaseInput(input); 201 } 202 203 static void ap_init_stream_volume(struct audio_policy *pol, 204 audio_stream_type_t stream, int index_min, 205 int index_max) 206 { 207 struct legacy_audio_policy *lap = to_lap(pol); 208 lap->apm->initStreamVolume((AudioSystem::stream_type)stream, index_min, 209 index_max); 210 } 211 212 static int ap_set_stream_volume_index(struct audio_policy *pol, 213 audio_stream_type_t stream, 214 int index) 215 { 216 struct legacy_audio_policy *lap = to_lap(pol); 217 return lap->apm->setStreamVolumeIndex((AudioSystem::stream_type)stream, 218 index); 219 } 220 221 static int ap_get_stream_volume_index(const struct audio_policy *pol, 222 audio_stream_type_t stream, 223 int *index) 224 { 225 const struct legacy_audio_policy *lap = to_clap(pol); 226 return lap->apm->getStreamVolumeIndex((AudioSystem::stream_type)stream, 227 index); 228 } 229 230 static uint32_t ap_get_strategy_for_stream(const struct audio_policy *pol, 231 audio_stream_type_t stream) 232 { 233 const struct legacy_audio_policy *lap = to_clap(pol); 234 return lap->apm->getStrategyForStream((AudioSystem::stream_type)stream); 235 } 236 237 static uint32_t ap_get_devices_for_stream(const struct audio_policy *pol, 238 audio_stream_type_t stream) 239 { 240 const struct legacy_audio_policy *lap = to_clap(pol); 241 return lap->apm->getDevicesForStream((AudioSystem::stream_type)stream); 242 } 243 244 static audio_io_handle_t ap_get_output_for_effect(struct audio_policy *pol, 245 struct effect_descriptor_s *desc) 246 { 247 struct legacy_audio_policy *lap = to_lap(pol); 248 return lap->apm->getOutputForEffect(desc); 249 } 250 251 static int ap_register_effect(struct audio_policy *pol, 252 struct effect_descriptor_s *desc, 253 audio_io_handle_t io, 254 uint32_t strategy, 255 int session, 256 int id) 257 { 258 struct legacy_audio_policy *lap = to_lap(pol); 259 return lap->apm->registerEffect(desc, io, strategy, session, id); 260 } 261 262 static int ap_unregister_effect(struct audio_policy *pol, int id) 263 { 264 struct legacy_audio_policy *lap = to_lap(pol); 265 return lap->apm->unregisterEffect(id); 266 } 267 268 static int ap_set_effect_enabled(struct audio_policy *pol, int id, bool enabled) 269 { 270 struct legacy_audio_policy *lap = to_lap(pol); 271 return lap->apm->setEffectEnabled(id, enabled); 272 } 273 274 static bool ap_is_stream_active(const struct audio_policy *pol, int stream, 275 uint32_t in_past_ms) 276 { 277 const struct legacy_audio_policy *lap = to_clap(pol); 278 return lap->apm->isStreamActive(stream, in_past_ms); 279 } 280 281 static int ap_dump(const struct audio_policy *pol, int fd) 282 { 283 const struct legacy_audio_policy *lap = to_clap(pol); 284 return lap->apm->dump(fd); 285 } 286 287 static int create_legacy_ap(const struct audio_policy_device *device, 288 struct audio_policy_service_ops *aps_ops, 289 void *service, 290 struct audio_policy **ap) 291 { 292 struct legacy_audio_policy *lap; 293 int ret; 294 295 if (!service || !aps_ops) 296 return -EINVAL; 297 298 lap = (struct legacy_audio_policy *)calloc(1, sizeof(*lap)); 299 if (!lap) 300 return -ENOMEM; 301 302 lap->policy.set_device_connection_state = ap_set_device_connection_state; 303 lap->policy.get_device_connection_state = ap_get_device_connection_state; 304 lap->policy.set_phone_state = ap_set_phone_state; 305 lap->policy.set_ringer_mode = ap_set_ringer_mode; 306 lap->policy.set_force_use = ap_set_force_use; 307 lap->policy.get_force_use = ap_get_force_use; 308 lap->policy.set_can_mute_enforced_audible = 309 ap_set_can_mute_enforced_audible; 310 lap->policy.init_check = ap_init_check; 311 lap->policy.get_output = ap_get_output; 312 lap->policy.start_output = ap_start_output; 313 lap->policy.stop_output = ap_stop_output; 314 lap->policy.release_output = ap_release_output; 315 lap->policy.get_input = ap_get_input; 316 lap->policy.start_input = ap_start_input; 317 lap->policy.stop_input = ap_stop_input; 318 lap->policy.release_input = ap_release_input; 319 lap->policy.init_stream_volume = ap_init_stream_volume; 320 lap->policy.set_stream_volume_index = ap_set_stream_volume_index; 321 lap->policy.get_stream_volume_index = ap_get_stream_volume_index; 322 lap->policy.get_strategy_for_stream = ap_get_strategy_for_stream; 323 lap->policy.get_devices_for_stream = ap_get_devices_for_stream; 324 lap->policy.get_output_for_effect = ap_get_output_for_effect; 325 lap->policy.register_effect = ap_register_effect; 326 lap->policy.unregister_effect = ap_unregister_effect; 327 lap->policy.set_effect_enabled = ap_set_effect_enabled; 328 lap->policy.is_stream_active = ap_is_stream_active; 329 lap->policy.dump = ap_dump; 330 331 lap->service = service; 332 lap->aps_ops = aps_ops; 333 lap->service_client = 334 new AudioPolicyCompatClient(aps_ops, service); 335 if (!lap->service_client) { 336 ret = -ENOMEM; 337 goto err_new_compat_client; 338 } 339 340 lap->apm = createAudioPolicyManager(lap->service_client); 341 if (!lap->apm) { 342 ret = -ENOMEM; 343 goto err_create_apm; 344 } 345 346 *ap = &lap->policy; 347 return 0; 348 349 err_create_apm: 350 delete lap->service_client; 351 err_new_compat_client: 352 free(lap); 353 *ap = NULL; 354 return ret; 355 } 356 357 static int destroy_legacy_ap(const struct audio_policy_device *ap_dev, 358 struct audio_policy *ap) 359 { 360 struct legacy_audio_policy *lap = to_lap(ap); 361 362 if (!lap) 363 return 0; 364 365 if (lap->apm) 366 destroyAudioPolicyManager(lap->apm); 367 if (lap->service_client) 368 delete lap->service_client; 369 free(lap); 370 return 0; 371 } 372 373 static int legacy_ap_dev_close(hw_device_t* device) 374 { 375 if (device) 376 free(device); 377 return 0; 378 } 379 380 static int legacy_ap_dev_open(const hw_module_t* module, const char* name, 381 hw_device_t** device) 382 { 383 struct legacy_ap_device *dev; 384 385 if (strcmp(name, AUDIO_POLICY_INTERFACE) != 0) 386 return -EINVAL; 387 388 dev = (struct legacy_ap_device *)calloc(1, sizeof(*dev)); 389 if (!dev) 390 return -ENOMEM; 391 392 dev->device.common.tag = HARDWARE_DEVICE_TAG; 393 dev->device.common.version = 0; 394 dev->device.common.module = const_cast<hw_module_t*>(module); 395 dev->device.common.close = legacy_ap_dev_close; 396 dev->device.create_audio_policy = create_legacy_ap; 397 dev->device.destroy_audio_policy = destroy_legacy_ap; 398 399 *device = &dev->device.common; 400 401 return 0; 402 } 403 404 static struct hw_module_methods_t legacy_ap_module_methods = { 405 open: legacy_ap_dev_open 406 }; 407 408 struct legacy_ap_module HAL_MODULE_INFO_SYM = { 409 module: { 410 common: { 411 tag: HARDWARE_MODULE_TAG, 412 version_major: 1, 413 version_minor: 0, 414 id: AUDIO_POLICY_HARDWARE_MODULE_ID, 415 name: "LEGACY Audio Policy HAL", 416 author: "The Android Open Source Project", 417 methods: &legacy_ap_module_methods, 418 dso : NULL, 419 reserved : {0}, 420 }, 421 }, 422 }; 423 424 }; // extern "C" 425 426 }; // namespace android_audio_legacy 427
