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        SLboolean enabled = thiz->mEnabled;
58        if (NO_NOISESUPPRESS(thiz)) {
59            result = SL_RESULT_CONTROL_LOST;
60        } else {
61            *pEnabled = (SLboolean) thiz->mNSEffect->getEnabled();
62            result = SL_RESULT_SUCCESS;
63        }
64        interface_unlock_exclusive(thiz);
65    }
66    SL_LEAVE_INTERFACE
67}
68
69SLresult IAndroidNoiseSuppression_IsAvailable(SLAndroidNoiseSuppressionItf self,
70                                              SLboolean *pEnabled)
71{
72    SL_ENTER_INTERFACE
73
74    *pEnabled = false;
75
76    uint32_t numEffects = 0;
77    int ret = EffectQueryNumberEffects(&numEffects);
78    if (ret != 0) {
79        ALOGE("IAndroidNoiseSuppression_IsAvailable() error %d querying number of effects", ret);
80        result = SL_RESULT_FEATURE_UNSUPPORTED;
81   } else {
82        ALOGV("EffectQueryNumberEffects() numEffects=%d", numEffects);
83
84        effect_descriptor_t fxDesc;
85        for (uint32_t i = 0 ; i < numEffects ; i++) {
86            if (EffectQueryEffect(i, &fxDesc) == 0) {
87                ALOGV("effect %d is called %s", i, fxDesc.name);
88                if (memcmp(&fxDesc.type, SL_IID_ANDROIDNOISESUPPRESSION,
89                           sizeof(effect_uuid_t)) == 0) {
90                    ALOGI("found effect \"%s\" from %s", fxDesc.name, fxDesc.implementor);
91                    *pEnabled = true;
92                    break;
93                }
94            }
95        }
96        result = SL_RESULT_SUCCESS;
97    }
98    SL_LEAVE_INTERFACE
99}
100
101static const struct SLAndroidNoiseSuppressionItf_ IAndroidNoiseSuppression_Itf = {
102    IAndroidNoiseSuppression_SetEnabled,
103    IAndroidNoiseSuppression_IsEnabled,
104    IAndroidNoiseSuppression_IsAvailable
105};
106
107void IAndroidNoiseSuppression_init(void *self)
108{
109    IAndroidNoiseSuppression *thiz = (IAndroidNoiseSuppression *) self;
110    thiz->mItf = &IAndroidNoiseSuppression_Itf;
111    thiz->mEnabled = SL_BOOLEAN_FALSE;
112    memset(&thiz->mNSDescriptor, 0, sizeof(effect_descriptor_t));
113    // placement new (explicit constructor)
114    (void) new (&thiz->mNSEffect) android::sp<android::AudioEffect>();
115}
116
117void IAndroidNoiseSuppression_deinit(void *self)
118{
119    IAndroidNoiseSuppression *thiz = (IAndroidNoiseSuppression *) self;
120    // explicit destructor
121    thiz->mNSEffect.~sp();
122}
123
124bool IAndroidNoiseSuppression_Expose(void *self)
125{
126    IAndroidNoiseSuppression *thiz = (IAndroidNoiseSuppression *) self;
127    if (!android_fx_initEffectDescriptor(SL_IID_ANDROIDNOISESUPPRESSION, &thiz->mNSDescriptor)) {
128        SL_LOGE("Noise Suppression initialization failed.");
129        return false;
130    }
131    return true;
132}
133