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    // 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 */
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 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 */
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 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. */
123static 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
130static 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
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{
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
151static 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
159static 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
167static 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
174static 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
185static 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
191static 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
197static 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
203static 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
212static 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
222static 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
232static 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
243static 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
254static 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
261static 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
268static 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
275static 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
286static 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
292static 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
298static 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
306static 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
313static 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
319static 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
325static 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
391err_create_apm:
392    delete qap->service_client;
393err_new_compat_client:
394    free(qap);
395    *ap = NULL;
396    return ret;
397}
398
399static 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
415static int qcom_ap_dev_close(hw_device_t* device)
416{
417    if (device)
418        free(device);
419    return 0;
420}
421
422static 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
446static struct hw_module_methods_t qcom_ap_module_methods = {
447        open: qcom_ap_dev_open
448};
449
450struct 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