audio_policy_hal.cpp revision 1c65a49da0c89f75e528354ef02de5dc93a28232
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 32namespace android_audio_legacy { 33 34extern "C" { 35 36struct legacy_ap_module { 37 struct audio_policy_module module; 38}; 39 40struct legacy_ap_device { 41 struct audio_policy_device device; 42}; 43 44struct 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 53static inline struct legacy_audio_policy * to_lap(struct audio_policy *pol) 54{ 55 return reinterpret_cast<struct legacy_audio_policy *>(pol); 56} 57 58static 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 64static 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 76static 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 87static 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 */ 94static 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 */ 102static 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 */ 112static 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. */ 123static 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 130static 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 136static 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 151static 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 159static 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 167static 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 174static 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 185static 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 191static 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 197static 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 203static 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 212static 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 221static 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 230static 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 237static 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 244static 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 251static 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 262static 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 268static bool ap_is_stream_active(const struct audio_policy *pol, int stream, 269 uint32_t in_past_ms) 270{ 271 const struct legacy_audio_policy *lap = to_clap(pol); 272 return lap->apm->isStreamActive(stream, in_past_ms); 273} 274 275static int ap_dump(const struct audio_policy *pol, int fd) 276{ 277 const struct legacy_audio_policy *lap = to_clap(pol); 278 return lap->apm->dump(fd); 279} 280 281static int create_legacy_ap(const struct audio_policy_device *device, 282 struct audio_policy_service_ops *aps_ops, 283 void *service, 284 struct audio_policy **ap) 285{ 286 struct legacy_audio_policy *lap; 287 int ret; 288 289 if (!service || !aps_ops) 290 return -EINVAL; 291 292 lap = (struct legacy_audio_policy *)calloc(1, sizeof(*lap)); 293 if (!lap) 294 return -ENOMEM; 295 296 lap->policy.set_device_connection_state = ap_set_device_connection_state; 297 lap->policy.get_device_connection_state = ap_get_device_connection_state; 298 lap->policy.set_phone_state = ap_set_phone_state; 299 lap->policy.set_ringer_mode = ap_set_ringer_mode; 300 lap->policy.set_force_use = ap_set_force_use; 301 lap->policy.get_force_use = ap_get_force_use; 302 lap->policy.set_can_mute_enforced_audible = 303 ap_set_can_mute_enforced_audible; 304 lap->policy.init_check = ap_init_check; 305 lap->policy.get_output = ap_get_output; 306 lap->policy.start_output = ap_start_output; 307 lap->policy.stop_output = ap_stop_output; 308 lap->policy.release_output = ap_release_output; 309 lap->policy.get_input = ap_get_input; 310 lap->policy.start_input = ap_start_input; 311 lap->policy.stop_input = ap_stop_input; 312 lap->policy.release_input = ap_release_input; 313 lap->policy.init_stream_volume = ap_init_stream_volume; 314 lap->policy.set_stream_volume_index = ap_set_stream_volume_index; 315 lap->policy.get_stream_volume_index = ap_get_stream_volume_index; 316 lap->policy.get_strategy_for_stream = ap_get_strategy_for_stream; 317 lap->policy.get_devices_for_stream = ap_get_devices_for_stream; 318 lap->policy.get_output_for_effect = ap_get_output_for_effect; 319 lap->policy.register_effect = ap_register_effect; 320 lap->policy.unregister_effect = ap_unregister_effect; 321 lap->policy.is_stream_active = ap_is_stream_active; 322 lap->policy.dump = ap_dump; 323 324 lap->service = service; 325 lap->aps_ops = aps_ops; 326 lap->service_client = 327 new AudioPolicyCompatClient(aps_ops, service); 328 if (!lap->service_client) { 329 ret = -ENOMEM; 330 goto err_new_compat_client; 331 } 332 333 lap->apm = createAudioPolicyManager(lap->service_client); 334 if (!lap->apm) { 335 ret = -ENOMEM; 336 goto err_create_apm; 337 } 338 339 *ap = &lap->policy; 340 return 0; 341 342err_create_apm: 343 delete lap->service_client; 344err_new_compat_client: 345 free(lap); 346 *ap = NULL; 347 return ret; 348} 349 350static int destroy_legacy_ap(const struct audio_policy_device *ap_dev, 351 struct audio_policy *ap) 352{ 353 struct legacy_audio_policy *lap = to_lap(ap); 354 355 if (!lap) 356 return 0; 357 358 if (lap->apm) 359 destroyAudioPolicyManager(lap->apm); 360 if (lap->service_client) 361 delete lap->service_client; 362 free(lap); 363 return 0; 364} 365 366static int legacy_ap_dev_close(hw_device_t* device) 367{ 368 if (device) 369 free(device); 370 return 0; 371} 372 373static int legacy_ap_dev_open(const hw_module_t* module, const char* name, 374 hw_device_t** device) 375{ 376 struct legacy_ap_device *dev; 377 378 if (strcmp(name, AUDIO_POLICY_INTERFACE) != 0) 379 return -EINVAL; 380 381 dev = (struct legacy_ap_device *)calloc(1, sizeof(*dev)); 382 if (!dev) 383 return -ENOMEM; 384 385 dev->device.common.tag = HARDWARE_DEVICE_TAG; 386 dev->device.common.version = 0; 387 dev->device.common.module = const_cast<hw_module_t*>(module); 388 dev->device.common.close = legacy_ap_dev_close; 389 dev->device.create_audio_policy = create_legacy_ap; 390 dev->device.destroy_audio_policy = destroy_legacy_ap; 391 392 *device = &dev->device.common; 393 394 return 0; 395} 396 397static struct hw_module_methods_t legacy_ap_module_methods = { 398 open: legacy_ap_dev_open 399}; 400 401struct legacy_ap_module HAL_MODULE_INFO_SYM = { 402 module: { 403 common: { 404 tag: HARDWARE_MODULE_TAG, 405 version_major: 1, 406 version_minor: 0, 407 id: AUDIO_POLICY_HARDWARE_MODULE_ID, 408 name: "LEGACY Audio Policy HAL", 409 author: "The Android Open Source Project", 410 methods: &legacy_ap_module_methods, 411 dso : NULL, 412 reserved : {0}, 413 }, 414 }, 415}; 416 417}; // extern "C" 418 419}; // namespace android_audio_legacy 420