audio_policy_hal.cpp revision 9746c4758b161e26eec92b1ef1ff1bf0ba0bd268 
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
32namespace android_audio_legacy {
33
34extern "C" {
35
36struct qcom_ap_module {
37    struct audio_policy_module module;
38};
39
40struct qcom_ap_device {
41    struct audio_policy_device device;
42};
43
44struct 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
53static inline struct qcom_audio_policy * to_qap(struct audio_policy *pol)
54{
55    return reinterpret_cast<struct qcom_audio_policy *>(pol);
56}
57
58static 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
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 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
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 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
87static void ap_set_phone_state(struct audio_policy *pol, audio_mode_t state)
88{
89    struct qcom_audio_policy *qap = to_qap(pol);
90    qap->apm->setPhoneState(state);
91}
92
93    /* force using a specific device category for the specified usage */
94static void ap_set_force_use(struct audio_policy *pol,
95                          audio_policy_force_use_t usage,
96                          audio_policy_forced_cfg_t config)
97{
98    struct qcom_audio_policy *qap = to_qap(pol);
99    qap->apm->setForceUse((AudioSystem::force_use)usage,
100                          (AudioSystem::forced_config)config);
101}
102
103    /* retreive current device category forced for a given usage */
104static audio_policy_forced_cfg_t ap_get_force_use(
105                                               const struct audio_policy *pol,
106                                               audio_policy_force_use_t usage)
107{
108    const struct qcom_audio_policy *qap = to_cqap(pol);
109    return (audio_policy_forced_cfg_t)qap->apm->getForceUse(
110                          (AudioSystem::force_use)usage);
111}
112
113/* if can_mute is true, then audio streams that are marked ENFORCED_AUDIBLE
114 * can still be muted. */
115static void ap_set_can_mute_enforced_audible(struct audio_policy *pol,
116                                             bool can_mute)
117{
118    struct qcom_audio_policy *qap = to_qap(pol);
119    qap->apm->setSystemProperty("ro.camera.sound.forced", can_mute ? "0" : "1");
120}
121
122static int ap_init_check(const struct audio_policy *pol)
123{
124    const struct qcom_audio_policy *qap = to_cqap(pol);
125    return qap->apm->initCheck();
126}
127
128#ifdef QCOM_TUNNEL_LPA_ENABLED
129static audio_io_handle_t ap_get_session(struct audio_policy *pol,
130                                       audio_stream_type_t stream,
131                                       audio_format_t format,
132                                       audio_policy_output_flags_t flags,
133                                       int sessionId,
134                                       uint32_t samplingRate,
135                                       uint32_t channels)
136{
137    struct qcom_audio_policy *qap = to_qap(pol);
138
139    ALOGV("%s: tid %d", __func__, gettid());
140    return qap->apm->getSession((AudioSystem::stream_type)stream,
141                               format, (AudioSystem::output_flags)flags,
142                               sessionId,
143                               samplingRate,
144                               channels);
145}
146
147static void ap_pause_session(struct audio_policy *pol, audio_io_handle_t output,
148                          audio_stream_type_t stream)
149{
150    struct qcom_audio_policy *qap = to_qap(pol);
151    qap->apm->pauseSession(output, (AudioSystem::stream_type)stream);
152}
153
154static void ap_resume_session(struct audio_policy *pol, audio_io_handle_t output,
155                          audio_stream_type_t stream)
156{
157    struct qcom_audio_policy *qap = to_qap(pol);
158    qap->apm->resumeSession(output, (AudioSystem::stream_type)stream);
159}
160
161static void ap_release_session(struct audio_policy *pol, audio_io_handle_t output)
162{
163    struct qcom_audio_policy *qap = to_qap(pol);
164    qap->apm->releaseSession(output);
165}
166#endif
167
168static audio_io_handle_t ap_get_output(struct audio_policy *pol,
169                                       audio_stream_type_t stream,
170                                       uint32_t sampling_rate,
171                                       audio_format_t format,
172                                       uint32_t channels,
173                                       audio_output_flags_t flags)
174{
175    struct qcom_audio_policy *qap = to_qap(pol);
176
177    ALOGV("%s: tid %d", __func__, gettid());
178    return qap->apm->getOutput((AudioSystem::stream_type)stream,
179                               sampling_rate, format, channels,
180                               (AudioSystem::output_flags)flags);
181}
182
183static int ap_start_output(struct audio_policy *pol, audio_io_handle_t output,
184                           audio_stream_type_t stream, int session)
185{
186    struct qcom_audio_policy *qap = to_qap(pol);
187    return qap->apm->startOutput(output, (AudioSystem::stream_type)stream,
188                                 session);
189}
190
191static int ap_stop_output(struct audio_policy *pol, audio_io_handle_t output,
192                          audio_stream_type_t stream, int session)
193{
194    struct qcom_audio_policy *qap = to_qap(pol);
195    return qap->apm->stopOutput(output, (AudioSystem::stream_type)stream,
196                                session);
197}
198
199static void ap_release_output(struct audio_policy *pol,
200                              audio_io_handle_t output)
201{
202    struct qcom_audio_policy *qap = to_qap(pol);
203    qap->apm->releaseOutput(output);
204}
205
206static audio_io_handle_t ap_get_input(struct audio_policy *pol, audio_source_t inputSource,
207                                      uint32_t sampling_rate,
208                                      audio_format_t format,
209                                      uint32_t channels,
210                                      audio_in_acoustics_t acoustics)
211{
212    struct qcom_audio_policy *qap = to_qap(pol);
213    return qap->apm->getInput(inputSource, sampling_rate, format, channels,
214                              (AudioSystem::audio_in_acoustics)acoustics);
215}
216
217static int ap_start_input(struct audio_policy *pol, audio_io_handle_t input)
218{
219    struct qcom_audio_policy *qap = to_qap(pol);
220    return qap->apm->startInput(input);
221}
222
223static int ap_stop_input(struct audio_policy *pol, audio_io_handle_t input)
224{
225    struct qcom_audio_policy *qap = to_qap(pol);
226    return qap->apm->stopInput(input);
227}
228
229static void ap_release_input(struct audio_policy *pol, audio_io_handle_t input)
230{
231    struct qcom_audio_policy *qap = to_qap(pol);
232    qap->apm->releaseInput(input);
233}
234
235static void ap_init_stream_volume(struct audio_policy *pol,
236                                  audio_stream_type_t stream, int index_min,
237                                  int index_max)
238{
239    struct qcom_audio_policy *qap = to_qap(pol);
240    qap->apm->initStreamVolume((AudioSystem::stream_type)stream, index_min,
241                               index_max);
242}
243
244static int ap_set_stream_volume_index(struct audio_policy *pol,
245                                      audio_stream_type_t stream,
246                                      int index)
247{
248    struct qcom_audio_policy *qap = to_qap(pol);
249    return qap->apm->setStreamVolumeIndex((AudioSystem::stream_type)stream,
250                                          index,
251                                          AUDIO_DEVICE_OUT_DEFAULT);
252}
253
254static int ap_get_stream_volume_index(const struct audio_policy *pol,
255                                      audio_stream_type_t stream,
256                                      int *index)
257{
258    const struct qcom_audio_policy *qap = to_cqap(pol);
259    return qap->apm->getStreamVolumeIndex((AudioSystem::stream_type)stream,
260                                          index,
261                                          AUDIO_DEVICE_OUT_DEFAULT);
262}
263
264static uint32_t ap_get_strategy_for_stream(const struct audio_policy *pol,
265                                           audio_stream_type_t stream)
266{
267    const struct qcom_audio_policy *qap = to_cqap(pol);
268    return qap->apm->getStrategyForStream((AudioSystem::stream_type)stream);
269}
270
271static int ap_set_stream_volume_index_for_device(struct audio_policy *pol,
272                                      audio_stream_type_t stream,
273                                      int index,
274                                      audio_devices_t device)
275{
276   const struct qcom_audio_policy *qap = to_cqap(pol);
277   return qap->apm->setStreamVolumeIndex((AudioSystem::stream_type)stream,
278                                          index,
279                                          device);
280}
281
282static int ap_get_stream_volume_index_for_device(const struct audio_policy *pol,
283                                      audio_stream_type_t stream,
284                                      int *index,
285                                      audio_devices_t device)
286{
287   const struct qcom_audio_policy *qap = to_cqap(pol);
288   return qap->apm->getStreamVolumeIndex((AudioSystem::stream_type)stream,
289                                          index,
290                                          AUDIO_DEVICE_OUT_DEFAULT);
291}
292
293static audio_devices_t ap_get_devices_for_stream(const struct audio_policy *pol,
294                                       audio_stream_type_t stream)
295{
296    const struct qcom_audio_policy *qap = to_cqap(pol);
297    return qap->apm->getDevicesForStream((AudioSystem::stream_type)stream);
298}
299
300static audio_io_handle_t ap_get_output_for_effect(struct audio_policy *pol,
301                                            struct effect_descriptor_s *desc)
302{
303    struct qcom_audio_policy *qap = to_qap(pol);
304    return qap->apm->getOutputForEffect(desc);
305}
306
307static int ap_register_effect(struct audio_policy *pol,
308                              struct effect_descriptor_s *desc,
309                              audio_io_handle_t io,
310                              uint32_t strategy,
311                              int session,
312                              int id)
313{
314    struct qcom_audio_policy *qap = to_qap(pol);
315    return qap->apm->registerEffect(desc, io, strategy, session, id);
316}
317
318static int ap_unregister_effect(struct audio_policy *pol, int id)
319{
320    struct qcom_audio_policy *qap = to_qap(pol);
321    return qap->apm->unregisterEffect(id);
322}
323
324static int ap_set_effect_enabled(struct audio_policy *pol, int id, bool enabled)
325{
326    struct qcom_audio_policy *qap = to_qap(pol);
327    return qap->apm->setEffectEnabled(id, enabled);
328}
329
330static bool ap_is_stream_active(const struct audio_policy *pol,
331                                audio_stream_type_t stream,
332                                uint32_t in_past_ms)
333{
334    const struct qcom_audio_policy *qap = to_cqap(pol);
335    return qap->apm->isStreamActive(stream, in_past_ms);
336}
337
338static int ap_dump(const struct audio_policy *pol, int fd)
339{
340    const struct qcom_audio_policy *qap = to_cqap(pol);
341    return qap->apm->dump(fd);
342}
343
344static int create_qcom_ap(const struct audio_policy_device *device,
345                            struct audio_policy_service_ops *aps_ops,
346                            void *service,
347                            struct audio_policy **ap)
348{
349    struct qcom_audio_policy *qap;
350    int ret;
351
352    if (!service || !aps_ops)
353        return -EINVAL;
354
355    qap = (struct qcom_audio_policy *)calloc(1, sizeof(*qap));
356    if (!qap)
357        return -ENOMEM;
358
359    qap->policy.set_device_connection_state = ap_set_device_connection_state;
360    qap->policy.get_device_connection_state = ap_get_device_connection_state;
361    qap->policy.set_phone_state = ap_set_phone_state;
362    qap->policy.set_force_use = ap_set_force_use;
363    qap->policy.get_force_use = ap_get_force_use;
364    qap->policy.set_can_mute_enforced_audible =
365        ap_set_can_mute_enforced_audible;
366    qap->policy.init_check = ap_init_check;
367    qap->policy.get_output = ap_get_output;
368#ifdef QCOM_TUNNEL_LPA_ENABLED
369    qap->policy.get_session = ap_get_session;
370    qap->policy.pause_session = ap_pause_session;
371    qap->policy.resume_session = ap_resume_session;
372    qap->policy.release_session = ap_release_session;
373#endif
374    qap->policy.start_output = ap_start_output;
375    qap->policy.stop_output = ap_stop_output;
376    qap->policy.release_output = ap_release_output;
377    qap->policy.get_input = ap_get_input;
378    qap->policy.start_input = ap_start_input;
379    qap->policy.stop_input = ap_stop_input;
380    qap->policy.release_input = ap_release_input;
381    qap->policy.init_stream_volume = ap_init_stream_volume;
382    qap->policy.set_stream_volume_index = ap_set_stream_volume_index;
383    qap->policy.get_stream_volume_index = ap_get_stream_volume_index;
384    qap->policy.set_stream_volume_index_for_device = ap_set_stream_volume_index_for_device;
385    qap->policy.get_stream_volume_index_for_device = ap_get_stream_volume_index_for_device;
386    qap->policy.get_strategy_for_stream = ap_get_strategy_for_stream;
387    qap->policy.get_devices_for_stream = ap_get_devices_for_stream;
388    qap->policy.get_output_for_effect = ap_get_output_for_effect;
389    qap->policy.register_effect = ap_register_effect;
390    qap->policy.unregister_effect = ap_unregister_effect;
391    qap->policy.set_effect_enabled = ap_set_effect_enabled;
392    qap->policy.is_stream_active = ap_is_stream_active;
393    qap->policy.dump = ap_dump;
394
395    qap->service = service;
396    qap->aps_ops = aps_ops;
397    qap->service_client =
398        new AudioPolicyCompatClient(aps_ops, service);
399    if (!qap->service_client) {
400        ret = -ENOMEM;
401        goto err_new_compat_client;
402    }
403
404    qap->apm = createAudioPolicyManager(qap->service_client);
405    if (!qap->apm) {
406        ret = -ENOMEM;
407        goto err_create_apm;
408    }
409
410    *ap = &qap->policy;
411    return 0;
412
413err_create_apm:
414    delete qap->service_client;
415err_new_compat_client:
416    free(qap);
417    *ap = NULL;
418    return ret;
419}
420
421static int destroy_qcom_ap(const struct audio_policy_device *ap_dev,
422                             struct audio_policy *ap)
423{
424    struct qcom_audio_policy *qap = to_qap(ap);
425
426    if (!qap)
427        return 0;
428
429    if (qap->apm)
430        destroyAudioPolicyManager(qap->apm);
431    if (qap->service_client)
432        delete qap->service_client;
433    free(qap);
434    return 0;
435}
436
437static int qcom_ap_dev_close(hw_device_t* device)
438{
439    if (device)
440        free(device);
441    return 0;
442}
443
444static int qcom_ap_dev_open(const hw_module_t* module, const char* name,
445                                    hw_device_t** device)
446{
447    struct qcom_ap_device *dev;
448
449    if (strcmp(name, AUDIO_POLICY_INTERFACE) != 0)
450        return -EINVAL;
451
452    dev = (struct qcom_ap_device *)calloc(1, sizeof(*dev));
453    if (!dev)
454        return -ENOMEM;
455
456    dev->device.common.tag = HARDWARE_DEVICE_TAG;
457    dev->device.common.version = 0;
458    dev->device.common.module = const_cast<hw_module_t*>(module);
459    dev->device.common.close = qcom_ap_dev_close;
460    dev->device.create_audio_policy = create_qcom_ap;
461    dev->device.destroy_audio_policy = destroy_qcom_ap;
462
463    *device = &dev->device.common;
464
465    return 0;
466}
467
468static struct hw_module_methods_t qcom_ap_module_methods = {
469        open: qcom_ap_dev_open
470};
471
472struct qcom_ap_module HAL_MODULE_INFO_SYM = {
473    module: {
474        common: {
475            tag: HARDWARE_MODULE_TAG,
476            version_major: 1,
477            version_minor: 0,
478            id: AUDIO_POLICY_HARDWARE_MODULE_ID,
479            name: "QCOM Audio Policy HAL",
480            author: "Code Aurora Forum",
481            methods: &qcom_ap_module_methods,
482            dso : NULL,
483            reserved : {0},
484        },
485    },
486};
487
488}; // extern "C"
489
490}; // namespace android_audio_legacy
491