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 "legacy_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 legacy_ap_module {
37    struct audio_policy_module module;
38};
39
40struct legacy_ap_device {
41    struct audio_policy_device device;
42};
43
44struct legacy_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 legacy_audio_policy * to_lap(struct audio_policy *pol)
54{
55    return reinterpret_cast<struct legacy_audio_policy *>(pol);
56}
57
58static inline const struct legacy_audio_policy * to_clap(const struct audio_policy *pol)
59{
60    return reinterpret_cast<const struct legacy_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 legacy_audio_policy *lap = to_lap(pol);
70    return lap->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 legacy_audio_policy *lap = to_clap(pol);
82    return (audio_policy_dev_state_t)lap->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 legacy_audio_policy *lap = to_lap(pol);
90    // as this is the legacy API, don't change it to use audio_mode_t instead of int
91    lap->apm->setPhoneState((int) state);
92}
93
94    /* indicate a change in ringer mode */
95static 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 */
102static 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 legacy_audio_policy *lap = to_lap(pol);
107    lap->apm->setForceUse((AudioSystem::force_use)usage,
108                          (AudioSystem::forced_config)config);
109}
110
111    /* retreive current device category forced for a given usage */
112static 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 legacy_audio_policy *lap = to_clap(pol);
117    return (audio_policy_forced_cfg_t)lap->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. */
123static void ap_set_can_mute_enforced_audible(struct audio_policy *pol,
124                                             bool can_mute)
125{
126    struct legacy_audio_policy *lap = to_lap(pol);
127    lap->apm->setSystemProperty("ro.camera.sound.forced", can_mute ? "0" : "1");
128}
129
130static int ap_init_check(const struct audio_policy *pol)
131{
132    const struct legacy_audio_policy *lap = to_clap(pol);
133    return lap->apm->initCheck();
134}
135
136static 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                                       const audio_offload_info_t *offloadInfo)
143{
144    struct legacy_audio_policy *lap = to_lap(pol);
145
146    ALOGV("%s: tid %d", __func__, gettid());
147    return lap->apm->getOutput((AudioSystem::stream_type)stream,
148                               sampling_rate, (int) format, channelMask,
149                               (AudioSystem::output_flags)flags,
150                               offloadInfo);
151}
152
153static int ap_start_output(struct audio_policy *pol, audio_io_handle_t output,
154                           audio_stream_type_t stream, int session)
155{
156    struct legacy_audio_policy *lap = to_lap(pol);
157    return lap->apm->startOutput(output, (AudioSystem::stream_type)stream,
158                                 session);
159}
160
161static int ap_stop_output(struct audio_policy *pol, audio_io_handle_t output,
162                          audio_stream_type_t stream, int session)
163{
164    struct legacy_audio_policy *lap = to_lap(pol);
165    return lap->apm->stopOutput(output, (AudioSystem::stream_type)stream,
166                                session);
167}
168
169static void ap_release_output(struct audio_policy *pol,
170                              audio_io_handle_t output)
171{
172    struct legacy_audio_policy *lap = to_lap(pol);
173    lap->apm->releaseOutput(output);
174}
175
176static audio_io_handle_t ap_get_input(struct audio_policy *pol, audio_source_t inputSource,
177                                      uint32_t sampling_rate,
178                                      audio_format_t format,
179                                      audio_channel_mask_t channelMask,
180                                      audio_in_acoustics_t acoustics)
181{
182    struct legacy_audio_policy *lap = to_lap(pol);
183    return lap->apm->getInput((int) inputSource, sampling_rate, (int) format, channelMask,
184                              (AudioSystem::audio_in_acoustics)acoustics);
185}
186
187static int ap_start_input(struct audio_policy *pol, audio_io_handle_t input)
188{
189    struct legacy_audio_policy *lap = to_lap(pol);
190    return lap->apm->startInput(input);
191}
192
193static int ap_stop_input(struct audio_policy *pol, audio_io_handle_t input)
194{
195    struct legacy_audio_policy *lap = to_lap(pol);
196    return lap->apm->stopInput(input);
197}
198
199static void ap_release_input(struct audio_policy *pol, audio_io_handle_t input)
200{
201    struct legacy_audio_policy *lap = to_lap(pol);
202    lap->apm->releaseInput(input);
203}
204
205static void ap_init_stream_volume(struct audio_policy *pol,
206                                  audio_stream_type_t stream, int index_min,
207                                  int index_max)
208{
209    struct legacy_audio_policy *lap = to_lap(pol);
210    lap->apm->initStreamVolume((AudioSystem::stream_type)stream, index_min,
211                               index_max);
212}
213
214static int ap_set_stream_volume_index(struct audio_policy *pol,
215                                      audio_stream_type_t stream,
216                                      int index)
217{
218    struct legacy_audio_policy *lap = to_lap(pol);
219    return lap->apm->setStreamVolumeIndex((AudioSystem::stream_type)stream,
220                                          index,
221                                          AUDIO_DEVICE_OUT_DEFAULT);
222}
223
224static int ap_get_stream_volume_index(const struct audio_policy *pol,
225                                      audio_stream_type_t stream,
226                                      int *index)
227{
228    const struct legacy_audio_policy *lap = to_clap(pol);
229    return lap->apm->getStreamVolumeIndex((AudioSystem::stream_type)stream,
230                                          index,
231                                          AUDIO_DEVICE_OUT_DEFAULT);
232}
233
234static int ap_set_stream_volume_index_for_device(struct audio_policy *pol,
235                                      audio_stream_type_t stream,
236                                      int index,
237                                      audio_devices_t device)
238{
239    struct legacy_audio_policy *lap = to_lap(pol);
240    return lap->apm->setStreamVolumeIndex((AudioSystem::stream_type)stream,
241                                          index,
242                                          device);
243}
244
245static int ap_get_stream_volume_index_for_device(const struct audio_policy *pol,
246                                      audio_stream_type_t stream,
247                                      int *index,
248                                      audio_devices_t device)
249{
250    const struct legacy_audio_policy *lap = to_clap(pol);
251    return lap->apm->getStreamVolumeIndex((AudioSystem::stream_type)stream,
252                                          index,
253                                          device);
254}
255
256static uint32_t ap_get_strategy_for_stream(const struct audio_policy *pol,
257                                           audio_stream_type_t stream)
258{
259    const struct legacy_audio_policy *lap = to_clap(pol);
260    return lap->apm->getStrategyForStream((AudioSystem::stream_type)stream);
261}
262
263static audio_devices_t ap_get_devices_for_stream(const struct audio_policy *pol,
264                                       audio_stream_type_t stream)
265{
266    const struct legacy_audio_policy *lap = to_clap(pol);
267    return lap->apm->getDevicesForStream((AudioSystem::stream_type)stream);
268}
269
270static audio_io_handle_t ap_get_output_for_effect(struct audio_policy *pol,
271                                            const struct effect_descriptor_s *desc)
272{
273    struct legacy_audio_policy *lap = to_lap(pol);
274    return lap->apm->getOutputForEffect(desc);
275}
276
277static int ap_register_effect(struct audio_policy *pol,
278                              const struct effect_descriptor_s *desc,
279                              audio_io_handle_t io,
280                              uint32_t strategy,
281                              int session,
282                              int id)
283{
284    struct legacy_audio_policy *lap = to_lap(pol);
285    return lap->apm->registerEffect(desc, io, strategy, session, id);
286}
287
288static int ap_unregister_effect(struct audio_policy *pol, int id)
289{
290    struct legacy_audio_policy *lap = to_lap(pol);
291    return lap->apm->unregisterEffect(id);
292}
293
294static int ap_set_effect_enabled(struct audio_policy *pol, int id, bool enabled)
295{
296    struct legacy_audio_policy *lap = to_lap(pol);
297    return lap->apm->setEffectEnabled(id, enabled);
298}
299
300static bool ap_is_stream_active(const struct audio_policy *pol, audio_stream_type_t stream,
301                                uint32_t in_past_ms)
302{
303    const struct legacy_audio_policy *lap = to_clap(pol);
304    return lap->apm->isStreamActive((int) stream, in_past_ms);
305}
306
307static bool ap_is_stream_active_remotely(const struct audio_policy *pol, audio_stream_type_t stream,
308                                uint32_t in_past_ms)
309{
310    const struct legacy_audio_policy *lap = to_clap(pol);
311    return lap->apm->isStreamActiveRemotely((int) stream, in_past_ms);
312}
313
314static bool ap_is_source_active(const struct audio_policy *pol, audio_source_t source)
315{
316    const struct legacy_audio_policy *lap = to_clap(pol);
317    return lap->apm->isSourceActive(source);
318}
319
320static int ap_dump(const struct audio_policy *pol, int fd)
321{
322    const struct legacy_audio_policy *lap = to_clap(pol);
323    return lap->apm->dump(fd);
324}
325
326static bool ap_is_offload_supported(const struct audio_policy *pol,
327                                    const audio_offload_info_t *info)
328{
329    const struct legacy_audio_policy *lap = to_clap(pol);
330    return lap->apm->isOffloadSupported(*info);
331}
332
333static int create_legacy_ap(const struct audio_policy_device *device,
334                            struct audio_policy_service_ops *aps_ops,
335                            void *service,
336                            struct audio_policy **ap)
337{
338    struct legacy_audio_policy *lap;
339    int ret;
340
341    if (!service || !aps_ops)
342        return -EINVAL;
343
344    lap = (struct legacy_audio_policy *)calloc(1, sizeof(*lap));
345    if (!lap)
346        return -ENOMEM;
347
348    lap->policy.set_device_connection_state = ap_set_device_connection_state;
349    lap->policy.get_device_connection_state = ap_get_device_connection_state;
350    lap->policy.set_phone_state = ap_set_phone_state;
351    lap->policy.set_ringer_mode = ap_set_ringer_mode;
352    lap->policy.set_force_use = ap_set_force_use;
353    lap->policy.get_force_use = ap_get_force_use;
354    lap->policy.set_can_mute_enforced_audible =
355        ap_set_can_mute_enforced_audible;
356    lap->policy.init_check = ap_init_check;
357    lap->policy.get_output = ap_get_output;
358    lap->policy.start_output = ap_start_output;
359    lap->policy.stop_output = ap_stop_output;
360    lap->policy.release_output = ap_release_output;
361    lap->policy.get_input = ap_get_input;
362    lap->policy.start_input = ap_start_input;
363    lap->policy.stop_input = ap_stop_input;
364    lap->policy.release_input = ap_release_input;
365    lap->policy.init_stream_volume = ap_init_stream_volume;
366    lap->policy.set_stream_volume_index = ap_set_stream_volume_index;
367    lap->policy.get_stream_volume_index = ap_get_stream_volume_index;
368    lap->policy.set_stream_volume_index_for_device = ap_set_stream_volume_index_for_device;
369    lap->policy.get_stream_volume_index_for_device = ap_get_stream_volume_index_for_device;
370    lap->policy.get_strategy_for_stream = ap_get_strategy_for_stream;
371    lap->policy.get_devices_for_stream = ap_get_devices_for_stream;
372    lap->policy.get_output_for_effect = ap_get_output_for_effect;
373    lap->policy.register_effect = ap_register_effect;
374    lap->policy.unregister_effect = ap_unregister_effect;
375    lap->policy.set_effect_enabled = ap_set_effect_enabled;
376    lap->policy.is_stream_active = ap_is_stream_active;
377    lap->policy.is_stream_active_remotely = ap_is_stream_active_remotely;
378    lap->policy.is_source_active = ap_is_source_active;
379    lap->policy.dump = ap_dump;
380    lap->policy.is_offload_supported = ap_is_offload_supported;
381
382    lap->service = service;
383    lap->aps_ops = aps_ops;
384    lap->service_client =
385        new AudioPolicyCompatClient(aps_ops, service);
386    if (!lap->service_client) {
387        ret = -ENOMEM;
388        goto err_new_compat_client;
389    }
390
391    lap->apm = createAudioPolicyManager(lap->service_client);
392    if (!lap->apm) {
393        ret = -ENOMEM;
394        goto err_create_apm;
395    }
396
397    *ap = &lap->policy;
398    return 0;
399
400err_create_apm:
401    delete lap->service_client;
402err_new_compat_client:
403    free(lap);
404    *ap = NULL;
405    return ret;
406}
407
408static int destroy_legacy_ap(const struct audio_policy_device *ap_dev,
409                             struct audio_policy *ap)
410{
411    struct legacy_audio_policy *lap = to_lap(ap);
412
413    if (!lap)
414        return 0;
415
416    if (lap->apm)
417        destroyAudioPolicyManager(lap->apm);
418    if (lap->service_client)
419        delete lap->service_client;
420    free(lap);
421    return 0;
422}
423
424static int legacy_ap_dev_close(hw_device_t* device)
425{
426    if (device)
427        free(device);
428    return 0;
429}
430
431static int legacy_ap_dev_open(const hw_module_t* module, const char* name,
432                                    hw_device_t** device)
433{
434    struct legacy_ap_device *dev;
435
436    if (strcmp(name, AUDIO_POLICY_INTERFACE) != 0)
437        return -EINVAL;
438
439    dev = (struct legacy_ap_device *)calloc(1, sizeof(*dev));
440    if (!dev)
441        return -ENOMEM;
442
443    dev->device.common.tag = HARDWARE_DEVICE_TAG;
444    dev->device.common.version = 0;
445    dev->device.common.module = const_cast<hw_module_t*>(module);
446    dev->device.common.close = legacy_ap_dev_close;
447    dev->device.create_audio_policy = create_legacy_ap;
448    dev->device.destroy_audio_policy = destroy_legacy_ap;
449
450    *device = &dev->device.common;
451
452    return 0;
453}
454
455static struct hw_module_methods_t legacy_ap_module_methods = {
456        open: legacy_ap_dev_open
457};
458
459struct legacy_ap_module HAL_MODULE_INFO_SYM = {
460    module: {
461        common: {
462            tag: HARDWARE_MODULE_TAG,
463            version_major: 1,
464            version_minor: 0,
465            id: AUDIO_POLICY_HARDWARE_MODULE_ID,
466            name: "LEGACY Audio Policy HAL",
467            author: "The Android Open Source Project",
468            methods: &legacy_ap_module_methods,
469            dso : NULL,
470            reserved : {0},
471        },
472    },
473};
474
475}; // extern "C"
476
477}; // namespace android_audio_legacy
478