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 "audio_policy_default" 18 //#define LOG_NDEBUG 0 19 20 #include <errno.h> 21 #include <stdint.h> 22 #include <stdlib.h> 23 #include <string.h> 24 25 #include <hardware/hardware.h> 26 #include <system/audio.h> 27 #include <system/audio_policy.h> 28 #include <hardware/audio_policy.h> 29 30 struct default_ap_module { 31 struct audio_policy_module module; 32 }; 33 34 struct default_ap_device { 35 struct audio_policy_device device; 36 }; 37 38 struct default_audio_policy { 39 struct audio_policy policy; 40 41 struct audio_policy_service_ops *aps_ops; 42 void *service; 43 }; 44 45 static int ap_set_device_connection_state(struct audio_policy *pol, 46 audio_devices_t device, 47 audio_policy_dev_state_t state, 48 const char *device_address) 49 { 50 return -ENOSYS; 51 } 52 53 static audio_policy_dev_state_t ap_get_device_connection_state( 54 const struct audio_policy *pol, 55 audio_devices_t device, 56 const char *device_address) 57 { 58 return AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE; 59 } 60 61 static void ap_set_phone_state(struct audio_policy *pol, audio_mode_t state) 62 { 63 } 64 65 // deprecated, never called 66 static void ap_set_ringer_mode(struct audio_policy *pol, uint32_t mode, 67 uint32_t mask) 68 { 69 } 70 71 static void ap_set_force_use(struct audio_policy *pol, 72 audio_policy_force_use_t usage, 73 audio_policy_forced_cfg_t config) 74 { 75 } 76 77 /* retreive current device category forced for a given usage */ 78 static audio_policy_forced_cfg_t ap_get_force_use( 79 const struct audio_policy *pol, 80 audio_policy_force_use_t usage) 81 { 82 return AUDIO_POLICY_FORCE_NONE; 83 } 84 85 /* if can_mute is true, then audio streams that are marked ENFORCED_AUDIBLE 86 * can still be muted. */ 87 static void ap_set_can_mute_enforced_audible(struct audio_policy *pol, 88 bool can_mute) 89 { 90 } 91 92 static int ap_init_check(const struct audio_policy *pol) 93 { 94 return 0; 95 } 96 97 static audio_io_handle_t ap_get_output(struct audio_policy *pol, 98 audio_stream_type_t stream, 99 uint32_t sampling_rate, 100 audio_format_t format, 101 uint32_t channels, 102 audio_output_flags_t flags) 103 { 104 return 0; 105 } 106 107 static int ap_start_output(struct audio_policy *pol, audio_io_handle_t output, 108 audio_stream_type_t stream, int session) 109 { 110 return -ENOSYS; 111 } 112 113 static int ap_stop_output(struct audio_policy *pol, audio_io_handle_t output, 114 audio_stream_type_t stream, int session) 115 { 116 return -ENOSYS; 117 } 118 119 static void ap_release_output(struct audio_policy *pol, 120 audio_io_handle_t output) 121 { 122 } 123 124 static audio_io_handle_t ap_get_input(struct audio_policy *pol, audio_source_t inputSource, 125 uint32_t sampling_rate, 126 audio_format_t format, 127 uint32_t channels, 128 audio_in_acoustics_t acoustics) 129 { 130 return 0; 131 } 132 133 static int ap_start_input(struct audio_policy *pol, audio_io_handle_t input) 134 { 135 return -ENOSYS; 136 } 137 138 static int ap_stop_input(struct audio_policy *pol, audio_io_handle_t input) 139 { 140 return -ENOSYS; 141 } 142 143 static void ap_release_input(struct audio_policy *pol, audio_io_handle_t input) 144 { 145 } 146 147 static void ap_init_stream_volume(struct audio_policy *pol, 148 audio_stream_type_t stream, int index_min, 149 int index_max) 150 { 151 } 152 153 static int ap_set_stream_volume_index(struct audio_policy *pol, 154 audio_stream_type_t stream, 155 int index) 156 { 157 return -ENOSYS; 158 } 159 160 static int ap_get_stream_volume_index(const struct audio_policy *pol, 161 audio_stream_type_t stream, 162 int *index) 163 { 164 return -ENOSYS; 165 } 166 167 static int ap_set_stream_volume_index_for_device(struct audio_policy *pol, 168 audio_stream_type_t stream, 169 int index, 170 audio_devices_t device) 171 { 172 return -ENOSYS; 173 } 174 175 static int ap_get_stream_volume_index_for_device(const struct audio_policy *pol, 176 audio_stream_type_t stream, 177 int *index, 178 audio_devices_t device) 179 { 180 return -ENOSYS; 181 } 182 183 static uint32_t ap_get_strategy_for_stream(const struct audio_policy *pol, 184 audio_stream_type_t stream) 185 { 186 return 0; 187 } 188 189 static audio_devices_t ap_get_devices_for_stream(const struct audio_policy *pol, 190 audio_stream_type_t stream) 191 { 192 return 0; 193 } 194 195 static audio_io_handle_t ap_get_output_for_effect(struct audio_policy *pol, 196 struct effect_descriptor_s *desc) 197 { 198 return 0; 199 } 200 201 static int ap_register_effect(struct audio_policy *pol, 202 struct effect_descriptor_s *desc, 203 audio_io_handle_t output, 204 uint32_t strategy, 205 int session, 206 int id) 207 { 208 return -ENOSYS; 209 } 210 211 static int ap_unregister_effect(struct audio_policy *pol, int id) 212 { 213 return -ENOSYS; 214 } 215 216 static int ap_set_effect_enabled(struct audio_policy *pol, int id, bool enabled) 217 { 218 return -ENOSYS; 219 } 220 221 static bool ap_is_stream_active(const struct audio_policy *pol, audio_stream_type_t stream, 222 uint32_t in_past_ms) 223 { 224 return false; 225 } 226 227 static int ap_dump(const struct audio_policy *pol, int fd) 228 { 229 return -ENOSYS; 230 } 231 232 static int create_default_ap(const struct audio_policy_device *device, 233 struct audio_policy_service_ops *aps_ops, 234 void *service, 235 struct audio_policy **ap) 236 { 237 struct default_ap_device *dev; 238 struct default_audio_policy *dap; 239 int ret; 240 241 *ap = NULL; 242 243 if (!service || !aps_ops) 244 return -EINVAL; 245 246 dap = (struct default_audio_policy *)calloc(1, sizeof(*dap)); 247 if (!dap) 248 return -ENOMEM; 249 250 dap->policy.set_device_connection_state = ap_set_device_connection_state; 251 dap->policy.get_device_connection_state = ap_get_device_connection_state; 252 dap->policy.set_phone_state = ap_set_phone_state; 253 dap->policy.set_ringer_mode = ap_set_ringer_mode; 254 dap->policy.set_force_use = ap_set_force_use; 255 dap->policy.get_force_use = ap_get_force_use; 256 dap->policy.set_can_mute_enforced_audible = 257 ap_set_can_mute_enforced_audible; 258 dap->policy.init_check = ap_init_check; 259 dap->policy.get_output = ap_get_output; 260 dap->policy.start_output = ap_start_output; 261 dap->policy.stop_output = ap_stop_output; 262 dap->policy.release_output = ap_release_output; 263 dap->policy.get_input = ap_get_input; 264 dap->policy.start_input = ap_start_input; 265 dap->policy.stop_input = ap_stop_input; 266 dap->policy.release_input = ap_release_input; 267 dap->policy.init_stream_volume = ap_init_stream_volume; 268 dap->policy.set_stream_volume_index = ap_set_stream_volume_index; 269 dap->policy.get_stream_volume_index = ap_get_stream_volume_index; 270 dap->policy.set_stream_volume_index_for_device = ap_set_stream_volume_index_for_device; 271 dap->policy.get_stream_volume_index_for_device = ap_get_stream_volume_index_for_device; 272 dap->policy.get_strategy_for_stream = ap_get_strategy_for_stream; 273 dap->policy.get_devices_for_stream = ap_get_devices_for_stream; 274 dap->policy.get_output_for_effect = ap_get_output_for_effect; 275 dap->policy.register_effect = ap_register_effect; 276 dap->policy.unregister_effect = ap_unregister_effect; 277 dap->policy.set_effect_enabled = ap_set_effect_enabled; 278 dap->policy.is_stream_active = ap_is_stream_active; 279 dap->policy.dump = ap_dump; 280 281 dap->service = service; 282 dap->aps_ops = aps_ops; 283 284 *ap = &dap->policy; 285 return 0; 286 } 287 288 static int destroy_default_ap(const struct audio_policy_device *ap_dev, 289 struct audio_policy *ap) 290 { 291 free(ap); 292 return 0; 293 } 294 295 static int default_ap_dev_close(hw_device_t* device) 296 { 297 free(device); 298 return 0; 299 } 300 301 static int default_ap_dev_open(const hw_module_t* module, const char* name, 302 hw_device_t** device) 303 { 304 struct default_ap_device *dev; 305 306 *device = NULL; 307 308 if (strcmp(name, AUDIO_POLICY_INTERFACE) != 0) 309 return -EINVAL; 310 311 dev = (struct default_ap_device *)calloc(1, sizeof(*dev)); 312 if (!dev) 313 return -ENOMEM; 314 315 dev->device.common.tag = HARDWARE_DEVICE_TAG; 316 dev->device.common.version = 0; 317 dev->device.common.module = (hw_module_t *)module; 318 dev->device.common.close = default_ap_dev_close; 319 dev->device.create_audio_policy = create_default_ap; 320 dev->device.destroy_audio_policy = destroy_default_ap; 321 322 *device = &dev->device.common; 323 324 return 0; 325 } 326 327 static struct hw_module_methods_t default_ap_module_methods = { 328 .open = default_ap_dev_open, 329 }; 330 331 struct default_ap_module HAL_MODULE_INFO_SYM = { 332 .module = { 333 .common = { 334 .tag = HARDWARE_MODULE_TAG, 335 .version_major = 1, 336 .version_minor = 0, 337 .id = AUDIO_POLICY_HARDWARE_MODULE_ID, 338 .name = "Default audio policy HAL", 339 .author = "The Android Open Source Project", 340 .methods = &default_ap_module_methods, 341 }, 342 }, 343 }; 344
