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 "qcom_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 qcom_ap_module {
37     struct audio_policy_module module;
38 };
39 
40 struct qcom_ap_device {
41     struct audio_policy_device device;
42 };
43 
44 struct qcom_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 qcom_audio_policy * to_qap(struct audio_policy *pol)
54 {
55     return reinterpret_cast<struct qcom_audio_policy *>(pol);
56 }
57 
58 static inline const struct qcom_audio_policy * to_cqap(const struct audio_policy *pol)
59 {
60     return reinterpret_cast<const struct qcom_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 qcom_audio_policy *qap = to_qap(pol);
70     return qap->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 qcom_audio_policy *qap = to_cqap(pol);
82     return (audio_policy_dev_state_t)qap->apm->getDeviceConnectionState(
83                     (AudioSystem::audio_devices)device,
84                     device_address);
85 }
86 
87 static void ap_set_phone_state(struct audio_policy *pol, audio_mode_t state)
88 {
89     struct qcom_audio_policy *qap = to_qap(pol);
90     // as this is the legacy API, don't change it to use audio_mode_t instead of int
91     qap->apm->setPhoneState((int) state);
92 }
93 
94     /* indicate a change in ringer mode */
95 static void ap_set_ringer_mode(struct audio_policy *pol, uint32_t mode,
96                                uint32_t mask)
97 {
98     // deprecated, never called
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 qcom_audio_policy *qap = to_qap(pol);
107     qap->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 qcom_audio_policy *qap = to_cqap(pol);
117     return (audio_policy_forced_cfg_t)qap->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 qcom_audio_policy *qap = to_qap(pol);
127     qap->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 qcom_audio_policy *qap = to_cqap(pol);
133     return qap->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                                        audio_format_t format,
140                                        audio_channel_mask_t channelMask,
141                                        audio_output_flags_t flags)
142 {
143     struct qcom_audio_policy *qap = to_qap(pol);
144 
145     ALOGV("%s: tid %d", __func__, gettid());
146     return qap->apm->getOutput((AudioSystem::stream_type)stream,
147                                sampling_rate, (int) format, channelMask,
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 qcom_audio_policy *qap = to_qap(pol);
155     return qap->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 qcom_audio_policy *qap = to_qap(pol);
163     return qap->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 qcom_audio_policy *qap = to_qap(pol);
171     qap->apm->releaseOutput(output);
172 }
173 
174 static audio_io_handle_t ap_get_input(struct audio_policy *pol, audio_source_t inputSource,
175                                       uint32_t sampling_rate,
176                                       audio_format_t format,
177                                       audio_channel_mask_t channelMask,
178                                       audio_in_acoustics_t acoustics)
179 {
180     struct qcom_audio_policy *qap = to_qap(pol);
181     return qap->apm->getInput((int) inputSource, sampling_rate, (int) format, channelMask,
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 qcom_audio_policy *qap = to_qap(pol);
188     return qap->apm->startInput(input);
189 }
190 
191 static int ap_stop_input(struct audio_policy *pol, audio_io_handle_t input)
192 {
193     struct qcom_audio_policy *qap = to_qap(pol);
194     return qap->apm->stopInput(input);
195 }
196 
197 static void ap_release_input(struct audio_policy *pol, audio_io_handle_t input)
198 {
199     struct qcom_audio_policy *qap = to_qap(pol);
200     qap->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 qcom_audio_policy *qap = to_qap(pol);
208     qap->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 qcom_audio_policy *qap = to_qap(pol);
217     return qap->apm->setStreamVolumeIndex((AudioSystem::stream_type)stream,
218                                           index,
219                                           AUDIO_DEVICE_OUT_DEFAULT);
220 }
221 
222 static int ap_get_stream_volume_index(const struct audio_policy *pol,
223                                       audio_stream_type_t stream,
224                                       int *index)
225 {
226     const struct qcom_audio_policy *qap = to_cqap(pol);
227     return qap->apm->getStreamVolumeIndex((AudioSystem::stream_type)stream,
228                                           index,
229                                           AUDIO_DEVICE_OUT_DEFAULT);
230 }
231 
232 static int ap_set_stream_volume_index_for_device(struct audio_policy *pol,
233                                       audio_stream_type_t stream,
234                                       int index,
235                                       audio_devices_t device)
236 {
237    const struct qcom_audio_policy *qap = to_cqap(pol);
238    return qap->apm->setStreamVolumeIndex((AudioSystem::stream_type)stream,
239                                           index,
240                                           device);
241 }
242 
243 static int ap_get_stream_volume_index_for_device(const struct audio_policy *pol,
244                                       audio_stream_type_t stream,
245                                       int *index,
246                                       audio_devices_t device)
247 {
248    const struct qcom_audio_policy *qap = to_cqap(pol);
249    return qap->apm->getStreamVolumeIndex((AudioSystem::stream_type)stream,
250                                           index,
251                                           device);
252 }
253 
254 static uint32_t ap_get_strategy_for_stream(const struct audio_policy *pol,
255                                            audio_stream_type_t stream)
256 {
257     const struct qcom_audio_policy *qap = to_cqap(pol);
258     return qap->apm->getStrategyForStream((AudioSystem::stream_type)stream);
259 }
260 
261 static audio_devices_t ap_get_devices_for_stream(const struct audio_policy *pol,
262                                        audio_stream_type_t stream)
263 {
264     const struct qcom_audio_policy *qap = to_cqap(pol);
265     return qap->apm->getDevicesForStream((AudioSystem::stream_type)stream);
266 }
267 
268 static audio_io_handle_t ap_get_output_for_effect(struct audio_policy *pol,
269                                             const struct effect_descriptor_s *desc)
270 {
271     struct qcom_audio_policy *qap = to_qap(pol);
272     return qap->apm->getOutputForEffect(desc);
273 }
274 
275 static int ap_register_effect(struct audio_policy *pol,
276                               const struct effect_descriptor_s *desc,
277                               audio_io_handle_t io,
278                               uint32_t strategy,
279                               int session,
280                               int id)
281 {
282     struct qcom_audio_policy *qap = to_qap(pol);
283     return qap->apm->registerEffect(desc, io, strategy, session, id);
284 }
285 
286 static int ap_unregister_effect(struct audio_policy *pol, int id)
287 {
288     struct qcom_audio_policy *qap = to_qap(pol);
289     return qap->apm->unregisterEffect(id);
290 }
291 
292 static int ap_set_effect_enabled(struct audio_policy *pol, int id, bool enabled)
293 {
294     struct qcom_audio_policy *qap = to_qap(pol);
295     return qap->apm->setEffectEnabled(id, enabled);
296 }
297 
298 static bool ap_is_stream_active(const struct audio_policy *pol,
299                                 audio_stream_type_t stream,
300                                 uint32_t in_past_ms)
301 {
302     const struct qcom_audio_policy *qap = to_cqap(pol);
303     return qap->apm->isStreamActive((int) stream, in_past_ms);
304 }
305 
306 static bool ap_is_stream_active_remotely(const struct audio_policy *pol,
307         audio_stream_type_t stream, uint32_t in_past_ms)
308 {
309     const struct qcom_audio_policy *qap = to_cqap(pol);
310     return qap->apm->isStreamActiveRemotely((int) stream, in_past_ms);
311 }
312 
313 static bool ap_is_source_active(const struct audio_policy *pol, audio_source_t source)
314 {
315     const struct qcom_audio_policy *qap = to_cqap(pol);
316     return qap->apm->isSourceActive(source);
317 }
318 
319 static int ap_dump(const struct audio_policy *pol, int fd)
320 {
321     const struct qcom_audio_policy *qap = to_cqap(pol);
322     return qap->apm->dump(fd);
323 }
324 
325 static int create_qcom_ap(const struct audio_policy_device *device,
326                             struct audio_policy_service_ops *aps_ops,
327                             void *service,
328                             struct audio_policy **ap)
329 {
330     struct qcom_audio_policy *qap;
331     int ret;
332 
333     if (!service || !aps_ops)
334         return -EINVAL;
335 
336     qap = (struct qcom_audio_policy *)calloc(1, sizeof(*qap));
337     if (!qap)
338         return -ENOMEM;
339 
340     qap->policy.set_device_connection_state = ap_set_device_connection_state;
341     qap->policy.get_device_connection_state = ap_get_device_connection_state;
342     qap->policy.set_phone_state = ap_set_phone_state;
343     qap->policy.set_ringer_mode = ap_set_ringer_mode;
344     qap->policy.set_force_use = ap_set_force_use;
345     qap->policy.get_force_use = ap_get_force_use;
346     qap->policy.set_can_mute_enforced_audible =
347         ap_set_can_mute_enforced_audible;
348     qap->policy.init_check = ap_init_check;
349     qap->policy.get_output = ap_get_output;
350     qap->policy.start_output = ap_start_output;
351     qap->policy.stop_output = ap_stop_output;
352     qap->policy.release_output = ap_release_output;
353     qap->policy.get_input = ap_get_input;
354     qap->policy.start_input = ap_start_input;
355     qap->policy.stop_input = ap_stop_input;
356     qap->policy.release_input = ap_release_input;
357     qap->policy.init_stream_volume = ap_init_stream_volume;
358     qap->policy.set_stream_volume_index = ap_set_stream_volume_index;
359     qap->policy.get_stream_volume_index = ap_get_stream_volume_index;
360     qap->policy.set_stream_volume_index_for_device = ap_set_stream_volume_index_for_device;
361     qap->policy.get_stream_volume_index_for_device = ap_get_stream_volume_index_for_device;
362     qap->policy.get_strategy_for_stream = ap_get_strategy_for_stream;
363     qap->policy.get_devices_for_stream = ap_get_devices_for_stream;
364     qap->policy.get_output_for_effect = ap_get_output_for_effect;
365     qap->policy.register_effect = ap_register_effect;
366     qap->policy.unregister_effect = ap_unregister_effect;
367     qap->policy.set_effect_enabled = ap_set_effect_enabled;
368     qap->policy.is_stream_active = ap_is_stream_active;
369     qap->policy.is_stream_active_remotely = ap_is_stream_active_remotely;
370     qap->policy.is_source_active = ap_is_source_active;
371     qap->policy.dump = ap_dump;
372 
373     qap->service = service;
374     qap->aps_ops = aps_ops;
375     qap->service_client =
376         new AudioPolicyCompatClient(aps_ops, service);
377     if (!qap->service_client) {
378         ret = -ENOMEM;
379         goto err_new_compat_client;
380     }
381 
382     qap->apm = createAudioPolicyManager(qap->service_client);
383     if (!qap->apm) {
384         ret = -ENOMEM;
385         goto err_create_apm;
386     }
387 
388     *ap = &qap->policy;
389     return 0;
390 
391 err_create_apm:
392     delete qap->service_client;
393 err_new_compat_client:
394     free(qap);
395     *ap = NULL;
396     return ret;
397 }
398 
399 static int destroy_qcom_ap(const struct audio_policy_device *ap_dev,
400                              struct audio_policy *ap)
401 {
402     struct qcom_audio_policy *qap = to_qap(ap);
403 
404     if (!qap)
405         return 0;
406 
407     if (qap->apm)
408         destroyAudioPolicyManager(qap->apm);
409     if (qap->service_client)
410         delete qap->service_client;
411     free(qap);
412     return 0;
413 }
414 
415 static int qcom_ap_dev_close(hw_device_t* device)
416 {
417     if (device)
418         free(device);
419     return 0;
420 }
421 
422 static int qcom_ap_dev_open(const hw_module_t* module, const char* name,
423                                     hw_device_t** device)
424 {
425     struct qcom_ap_device *dev;
426 
427     if (strcmp(name, AUDIO_POLICY_INTERFACE) != 0)
428         return -EINVAL;
429 
430     dev = (struct qcom_ap_device *)calloc(1, sizeof(*dev));
431     if (!dev)
432         return -ENOMEM;
433 
434     dev->device.common.tag = HARDWARE_DEVICE_TAG;
435     dev->device.common.version = 0;
436     dev->device.common.module = const_cast<hw_module_t*>(module);
437     dev->device.common.close = qcom_ap_dev_close;
438     dev->device.create_audio_policy = create_qcom_ap;
439     dev->device.destroy_audio_policy = destroy_qcom_ap;
440 
441     *device = &dev->device.common;
442 
443     return 0;
444 }
445 
446 static struct hw_module_methods_t qcom_ap_module_methods = {
447         open: qcom_ap_dev_open
448 };
449 
450 struct qcom_ap_module HAL_MODULE_INFO_SYM = {
451     module: {
452         common: {
453             tag: HARDWARE_MODULE_TAG,
454             version_major: 1,
455             version_minor: 0,
456             id: AUDIO_POLICY_HARDWARE_MODULE_ID,
457             name: "QCOM Audio Policy HAL",
458             author: "Code Aurora Forum",
459             methods: &qcom_ap_module_methods,
460             dso : NULL,
461             reserved : {0},
462         },
463     },
464 };
465 
466 }; // extern "C"
467 
468 }; // namespace android_audio_legacy
469