2 * Copyright (C) 2011 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 #define LOG_TAG "audio_policy_default"
18 //#define LOG_NDEBUG 0
25 #include <hardware/hardware.h>
26 #include <system/audio.h>
27 #include <system/audio_policy.h>
28 #include <hardware/audio_policy.h>
30 struct default_ap_module {
31 struct audio_policy_module module;
34 struct default_ap_device {
35 struct audio_policy_device device;
38 struct default_audio_policy {
39 struct audio_policy policy;
41 struct audio_policy_service_ops *aps_ops;
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)
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)
58 return AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE;
61 static void ap_set_phone_state(struct audio_policy *pol, audio_mode_t state)
65 // deprecated, never called
66 static void ap_set_ringer_mode(struct audio_policy *pol, uint32_t mode,
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)
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)
82 return AUDIO_POLICY_FORCE_NONE;
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,
92 static int ap_init_check(const struct audio_policy *pol)
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,
102 audio_policy_output_flags_t flags)
107 static int ap_start_output(struct audio_policy *pol, audio_io_handle_t output,
108 audio_stream_type_t stream, int session)
113 static int ap_stop_output(struct audio_policy *pol, audio_io_handle_t output,
114 audio_stream_type_t stream, int session)
119 static void ap_release_output(struct audio_policy *pol,
120 audio_io_handle_t output)
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,
128 audio_in_acoustics_t acoustics)
133 static int ap_start_input(struct audio_policy *pol, audio_io_handle_t input)
138 static int ap_stop_input(struct audio_policy *pol, audio_io_handle_t input)
143 static void ap_release_input(struct audio_policy *pol, audio_io_handle_t input)
147 static void ap_init_stream_volume(struct audio_policy *pol,
148 audio_stream_type_t stream, int index_min,
153 static int ap_set_stream_volume_index(struct audio_policy *pol,
154 audio_stream_type_t stream,
160 static int ap_get_stream_volume_index(const struct audio_policy *pol,
161 audio_stream_type_t stream,
167 static int ap_set_stream_volume_index_for_device(struct audio_policy *pol,
168 audio_stream_type_t stream,
170 audio_devices_t device)
175 static int ap_get_stream_volume_index_for_device(const struct audio_policy *pol,
176 audio_stream_type_t stream,
178 audio_devices_t device)
183 static uint32_t ap_get_strategy_for_stream(const struct audio_policy *pol,
184 audio_stream_type_t stream)
189 static audio_devices_t ap_get_devices_for_stream(const struct audio_policy *pol,
190 audio_stream_type_t stream)
195 static audio_io_handle_t ap_get_output_for_effect(struct audio_policy *pol,
196 struct effect_descriptor_s *desc)
201 static int ap_register_effect(struct audio_policy *pol,
202 struct effect_descriptor_s *desc,
203 audio_io_handle_t output,
211 static int ap_unregister_effect(struct audio_policy *pol, int id)
216 static int ap_set_effect_enabled(struct audio_policy *pol, int id, bool enabled)
221 static bool ap_is_stream_active(const struct audio_policy *pol, audio_stream_type_t stream,
227 static int ap_dump(const struct audio_policy *pol, int fd)
232 static int create_default_ap(const struct audio_policy_device *device,
233 struct audio_policy_service_ops *aps_ops,
235 struct audio_policy **ap)
237 struct default_ap_device *dev;
238 struct default_audio_policy *dap;
243 if (!service || !aps_ops)
246 dap = (struct default_audio_policy *)calloc(1, sizeof(*dap));
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;
281 dap->service = service;
282 dap->aps_ops = aps_ops;
288 static int destroy_default_ap(const struct audio_policy_device *ap_dev,
289 struct audio_policy *ap)
295 static int default_ap_dev_close(hw_device_t* device)
301 static int default_ap_dev_open(const hw_module_t* module, const char* name,
302 hw_device_t** device)
304 struct default_ap_device *dev;
308 if (strcmp(name, AUDIO_POLICY_INTERFACE) != 0)
311 dev = (struct default_ap_device *)calloc(1, sizeof(*dev));
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;
322 *device = &dev->device.common;
327 static struct hw_module_methods_t default_ap_module_methods = {
328 .open = default_ap_dev_open,
331 struct default_ap_module HAL_MODULE_INFO_SYM = {
334 .tag = HARDWARE_MODULE_TAG,
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,