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 audio_channel_mask_t channelMask, 102 audio_output_flags_t flags, 103 const audio_offload_info_t *info) 104 { 105 return 0; 106 } 107 108 static int ap_start_output(struct audio_policy *pol, audio_io_handle_t output, 109 audio_stream_type_t stream, int session) 110 { 111 return -ENOSYS; 112 } 113 114 static int ap_stop_output(struct audio_policy *pol, audio_io_handle_t output, 115 audio_stream_type_t stream, int session) 116 { 117 return -ENOSYS; 118 } 119 120 static void ap_release_output(struct audio_policy *pol, 121 audio_io_handle_t output) 122 { 123 } 124 125 static audio_io_handle_t ap_get_input(struct audio_policy *pol, audio_source_t inputSource, 126 uint32_t sampling_rate, 127 audio_format_t format, 128 audio_channel_mask_t channelMask, 129 audio_in_acoustics_t acoustics) 130 { 131 return 0; 132 } 133 134 static int ap_start_input(struct audio_policy *pol, audio_io_handle_t input) 135 { 136 return -ENOSYS; 137 } 138 139 static int ap_stop_input(struct audio_policy *pol, audio_io_handle_t input) 140 { 141 return -ENOSYS; 142 } 143 144 static void ap_release_input(struct audio_policy *pol, audio_io_handle_t input) 145 { 146 } 147 148 static void ap_init_stream_volume(struct audio_policy *pol, 149 audio_stream_type_t stream, int index_min, 150 int index_max) 151 { 152 } 153 154 static int ap_set_stream_volume_index(struct audio_policy *pol, 155 audio_stream_type_t stream, 156 int index) 157 { 158 return -ENOSYS; 159 } 160 161 static int ap_get_stream_volume_index(const struct audio_policy *pol, 162 audio_stream_type_t stream, 163 int *index) 164 { 165 return -ENOSYS; 166 } 167 168 static int ap_set_stream_volume_index_for_device(struct audio_policy *pol, 169 audio_stream_type_t stream, 170 int index, 171 audio_devices_t device) 172 { 173 return -ENOSYS; 174 } 175 176 static int ap_get_stream_volume_index_for_device(const struct audio_policy *pol, 177 audio_stream_type_t stream, 178 int *index, 179 audio_devices_t device) 180 { 181 return -ENOSYS; 182 } 183 184 static uint32_t ap_get_strategy_for_stream(const struct audio_policy *pol, 185 audio_stream_type_t stream) 186 { 187 return 0; 188 } 189 190 static audio_devices_t ap_get_devices_for_stream(const struct audio_policy *pol, 191 audio_stream_type_t stream) 192 { 193 return 0; 194 } 195 196 static audio_io_handle_t ap_get_output_for_effect(struct audio_policy *pol, 197 const struct effect_descriptor_s *desc) 198 { 199 return 0; 200 } 201 202 static int ap_register_effect(struct audio_policy *pol, 203 const struct effect_descriptor_s *desc, 204 audio_io_handle_t output, 205 uint32_t strategy, 206 int session, 207 int id) 208 { 209 return -ENOSYS; 210 } 211 212 static int ap_unregister_effect(struct audio_policy *pol, int id) 213 { 214 return -ENOSYS; 215 } 216 217 static int ap_set_effect_enabled(struct audio_policy *pol, int id, bool enabled) 218 { 219 return -ENOSYS; 220 } 221 222 static bool ap_is_stream_active(const struct audio_policy *pol, audio_stream_type_t stream, 223 uint32_t in_past_ms) 224 { 225 return false; 226 } 227 228 static int ap_dump(const struct audio_policy *pol, int fd) 229 { 230 return -ENOSYS; 231 } 232 233 static bool ap_is_offload_supported(const struct audio_policy *pol, 234 const audio_offload_info_t *info) 235 { 236 return false; 237 } 238 239 static int create_default_ap(const struct audio_policy_device *device, 240 struct audio_policy_service_ops *aps_ops, 241 void *service, 242 struct audio_policy **ap) 243 { 244 struct default_ap_device *dev; 245 struct default_audio_policy *dap; 246 int ret; 247 248 *ap = NULL; 249 250 if (!service || !aps_ops) 251 return -EINVAL; 252 253 dap = (struct default_audio_policy *)calloc(1, sizeof(*dap)); 254 if (!dap) 255 return -ENOMEM; 256 257 dap->policy.set_device_connection_state = ap_set_device_connection_state; 258 dap->policy.get_device_connection_state = ap_get_device_connection_state; 259 dap->policy.set_phone_state = ap_set_phone_state; 260 dap->policy.set_ringer_mode = ap_set_ringer_mode; 261 dap->policy.set_force_use = ap_set_force_use; 262 dap->policy.get_force_use = ap_get_force_use; 263 dap->policy.set_can_mute_enforced_audible = 264 ap_set_can_mute_enforced_audible; 265 dap->policy.init_check = ap_init_check; 266 dap->policy.get_output = ap_get_output; 267 dap->policy.start_output = ap_start_output; 268 dap->policy.stop_output = ap_stop_output; 269 dap->policy.release_output = ap_release_output; 270 dap->policy.get_input = ap_get_input; 271 dap->policy.start_input = ap_start_input; 272 dap->policy.stop_input = ap_stop_input; 273 dap->policy.release_input = ap_release_input; 274 dap->policy.init_stream_volume = ap_init_stream_volume; 275 dap->policy.set_stream_volume_index = ap_set_stream_volume_index; 276 dap->policy.get_stream_volume_index = ap_get_stream_volume_index; 277 dap->policy.set_stream_volume_index_for_device = ap_set_stream_volume_index_for_device; 278 dap->policy.get_stream_volume_index_for_device = ap_get_stream_volume_index_for_device; 279 dap->policy.get_strategy_for_stream = ap_get_strategy_for_stream; 280 dap->policy.get_devices_for_stream = ap_get_devices_for_stream; 281 dap->policy.get_output_for_effect = ap_get_output_for_effect; 282 dap->policy.register_effect = ap_register_effect; 283 dap->policy.unregister_effect = ap_unregister_effect; 284 dap->policy.set_effect_enabled = ap_set_effect_enabled; 285 dap->policy.is_stream_active = ap_is_stream_active; 286 dap->policy.dump = ap_dump; 287 288 dap->policy.is_offload_supported = ap_is_offload_supported; 289 290 dap->service = service; 291 dap->aps_ops = aps_ops; 292 293 *ap = &dap->policy; 294 return 0; 295 } 296 297 static int destroy_default_ap(const struct audio_policy_device *ap_dev, 298 struct audio_policy *ap) 299 { 300 free(ap); 301 return 0; 302 } 303 304 static int default_ap_dev_close(hw_device_t* device) 305 { 306 free(device); 307 return 0; 308 } 309 310 static int default_ap_dev_open(const hw_module_t* module, const char* name, 311 hw_device_t** device) 312 { 313 struct default_ap_device *dev; 314 315 *device = NULL; 316 317 if (strcmp(name, AUDIO_POLICY_INTERFACE) != 0) 318 return -EINVAL; 319 320 dev = (struct default_ap_device *)calloc(1, sizeof(*dev)); 321 if (!dev) 322 return -ENOMEM; 323 324 dev->device.common.tag = HARDWARE_DEVICE_TAG; 325 dev->device.common.version = 0; 326 dev->device.common.module = (hw_module_t *)module; 327 dev->device.common.close = default_ap_dev_close; 328 dev->device.create_audio_policy = create_default_ap; 329 dev->device.destroy_audio_policy = destroy_default_ap; 330 331 *device = &dev->device.common; 332 333 return 0; 334 } 335 336 static struct hw_module_methods_t default_ap_module_methods = { 337 .open = default_ap_dev_open, 338 }; 339 340 struct default_ap_module HAL_MODULE_INFO_SYM = { 341 .module = { 342 .common = { 343 .tag = HARDWARE_MODULE_TAG, 344 .version_major = 1, 345 .version_minor = 0, 346 .id = AUDIO_POLICY_HARDWARE_MODULE_ID, 347 .name = "Default audio policy HAL", 348 .author = "The Android Open Source Project", 349 .methods = &default_ap_module_methods, 350 }, 351 }, 352 }; 353
