1/*
2 * Copyright (C) 2014 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/* Automatic Gain Control implementation */
18#include "sles_allinclusive.h"
19
20#include <media/EffectsFactoryApi.h>
21
22#include <audio_effects/effect_ns.h>
23/**
24 * returns true if this interface is not associated with an initialized Noise Suppression effect
25 */
26static inline bool NO_NOISESUPPRESS(IAndroidNoiseSuppression* v) {
27    return (v->mNSEffect == 0);
28}
29
30SLresult IAndroidNoiseSuppression_SetEnabled(SLAndroidNoiseSuppressionItf self, SLboolean enabled)
31{
32    SL_ENTER_INTERFACE
33
34    IAndroidNoiseSuppression *thiz = (IAndroidNoiseSuppression *) self;
35    interface_lock_exclusive(thiz);
36    thiz->mEnabled = (SLboolean) enabled;
37    if (NO_NOISESUPPRESS(thiz)) {
38        result = SL_RESULT_CONTROL_LOST;
39    } else {
40        android::status_t status = thiz->mNSEffect->setEnabled((bool) thiz->mEnabled);
41        result = android_fx_statusToResult(status);
42    }
43    interface_unlock_exclusive(thiz);
44
45    SL_LEAVE_INTERFACE
46}
47
48SLresult IAndroidNoiseSuppression_IsEnabled(SLAndroidNoiseSuppressionItf self, SLboolean *pEnabled)
49{
50    SL_ENTER_INTERFACE
51
52    if (NULL == pEnabled) {
53        result = SL_RESULT_PARAMETER_INVALID;
54    } else {
55        IAndroidNoiseSuppression *thiz = (IAndroidNoiseSuppression *) self;
56        interface_lock_exclusive(thiz);
57        if (NO_NOISESUPPRESS(thiz)) {
58            result = SL_RESULT_CONTROL_LOST;
59        } else {
60            *pEnabled = (SLboolean) thiz->mNSEffect->getEnabled();
61            result = SL_RESULT_SUCCESS;
62        }
63        interface_unlock_exclusive(thiz);
64    }
65    SL_LEAVE_INTERFACE
66}
67
68SLresult IAndroidNoiseSuppression_IsAvailable(SLAndroidNoiseSuppressionItf self,
69                                              SLboolean *pEnabled)
70{
71    SL_ENTER_INTERFACE
72
73    *pEnabled = false;
74
75    uint32_t numEffects = 0;
76    int ret = EffectQueryNumberEffects(&numEffects);
77    if (ret != 0) {
78        ALOGE("IAndroidNoiseSuppression_IsAvailable() error %d querying number of effects", ret);
79        result = SL_RESULT_FEATURE_UNSUPPORTED;
80   } else {
81        ALOGV("EffectQueryNumberEffects() numEffects=%d", numEffects);
82
83        effect_descriptor_t fxDesc;
84        for (uint32_t i = 0 ; i < numEffects ; i++) {
85            if (EffectQueryEffect(i, &fxDesc) == 0) {
86                ALOGV("effect %d is called %s", i, fxDesc.name);
87                if (memcmp(&fxDesc.type, SL_IID_ANDROIDNOISESUPPRESSION,
88                           sizeof(effect_uuid_t)) == 0) {
89                    ALOGI("found effect \"%s\" from %s", fxDesc.name, fxDesc.implementor);
90                    *pEnabled = true;
91                    break;
92                }
93            }
94        }
95        result = SL_RESULT_SUCCESS;
96    }
97    SL_LEAVE_INTERFACE
98}
99
100static const struct SLAndroidNoiseSuppressionItf_ IAndroidNoiseSuppression_Itf = {
101    IAndroidNoiseSuppression_SetEnabled,
102    IAndroidNoiseSuppression_IsEnabled,
103    IAndroidNoiseSuppression_IsAvailable
104};
105
106void IAndroidNoiseSuppression_init(void *self)
107{
108    IAndroidNoiseSuppression *thiz = (IAndroidNoiseSuppression *) self;
109    thiz->mItf = &IAndroidNoiseSuppression_Itf;
110    thiz->mEnabled = SL_BOOLEAN_FALSE;
111    memset(&thiz->mNSDescriptor, 0, sizeof(effect_descriptor_t));
112    // placement new (explicit constructor)
113    (void) new (&thiz->mNSEffect) android::sp<android::AudioEffect>();
114}
115
116void IAndroidNoiseSuppression_deinit(void *self)
117{
118    IAndroidNoiseSuppression *thiz = (IAndroidNoiseSuppression *) self;
119    // explicit destructor
120    thiz->mNSEffect.~sp();
121}
122
123bool IAndroidNoiseSuppression_Expose(void *self)
124{
125    IAndroidNoiseSuppression *thiz = (IAndroidNoiseSuppression *) self;
126    if (!android_fx_initEffectDescriptor(SL_IID_ANDROIDNOISESUPPRESSION, &thiz->mNSDescriptor)) {
127        SL_LOGE("Noise Suppression initialization failed.");
128        return false;
129    }
130    return true;
131}
132