IVolume.c revision bcc5c7225e3b7a1dbf2e9e830987f69167acf06f 
1/*
2 * Copyright (C) 2010 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/* Volume implementation */
18
19#include "sles_allinclusive.h"
20
21
22static SLresult IVolume_SetVolumeLevel(SLVolumeItf self, SLmillibel level)
23{
24    SL_ENTER_INTERFACE
25
26    if (!((SL_MILLIBEL_MIN <= level) && (level <= PLATFORM_MILLIBEL_MAX_VOLUME))) {
27        result = SL_RESULT_PARAMETER_INVALID;
28    } else {
29        IVolume *thiz = (IVolume *) self;
30        interface_lock_exclusive(thiz);
31        SLmillibel oldLevel = thiz->mLevel;
32        if (oldLevel != level) {
33            thiz->mLevel = level;
34            interface_unlock_exclusive_attributes(thiz, ATTR_GAIN);
35        } else
36            interface_unlock_exclusive(thiz);
37        result = SL_RESULT_SUCCESS;
38    }
39
40    SL_LEAVE_INTERFACE
41}
42
43
44static SLresult IVolume_GetVolumeLevel(SLVolumeItf self, SLmillibel *pLevel)
45{
46    SL_ENTER_INTERFACE
47
48    if (NULL == pLevel) {
49        result = SL_RESULT_PARAMETER_INVALID;
50    } else {
51        IVolume *thiz = (IVolume *) self;
52        interface_lock_peek(thiz);
53        SLmillibel level = thiz->mLevel;
54        interface_unlock_peek(thiz);
55        *pLevel = level;
56        result = SL_RESULT_SUCCESS;
57    }
58
59    SL_LEAVE_INTERFACE
60}
61
62
63static SLresult IVolume_GetMaxVolumeLevel(SLVolumeItf self, SLmillibel *pMaxLevel)
64{
65    SL_ENTER_INTERFACE
66
67    if (NULL == pMaxLevel) {
68        result = SL_RESULT_PARAMETER_INVALID;
69    } else {
70        *pMaxLevel = PLATFORM_MILLIBEL_MAX_VOLUME;
71        result = SL_RESULT_SUCCESS;
72    }
73
74    SL_LEAVE_INTERFACE
75}
76
77
78static SLresult IVolume_SetMute(SLVolumeItf self, SLboolean mute)
79{
80    SL_ENTER_INTERFACE
81
82    IVolume *thiz = (IVolume *) self;
83    mute = SL_BOOLEAN_FALSE != mute; // normalize
84    interface_lock_exclusive(thiz);
85    SLboolean oldMute = thiz->mMute;
86    if (oldMute != mute) {
87        thiz->mMute = (SLuint8) mute;
88        interface_unlock_exclusive_attributes(thiz, ATTR_GAIN);
89    } else
90        interface_unlock_exclusive(thiz);
91    result = SL_RESULT_SUCCESS;
92
93    SL_LEAVE_INTERFACE
94}
95
96
97static SLresult IVolume_GetMute(SLVolumeItf self, SLboolean *pMute)
98{
99    SL_ENTER_INTERFACE
100
101    if (NULL == pMute) {
102        result = SL_RESULT_PARAMETER_INVALID;
103    } else {
104        IVolume *thiz = (IVolume *) self;
105        interface_lock_peek(thiz);
106        SLboolean mute = thiz->mMute;
107        interface_unlock_peek(thiz);
108        *pMute = mute;
109        result = SL_RESULT_SUCCESS;
110    }
111
112    SL_LEAVE_INTERFACE
113}
114
115
116static SLresult IVolume_EnableStereoPosition(SLVolumeItf self, SLboolean enable)
117{
118    SL_ENTER_INTERFACE
119
120    IVolume *thiz = (IVolume *) self;
121    enable = SL_BOOLEAN_FALSE != enable; // normalize
122    interface_lock_exclusive(thiz);
123    SLboolean oldEnable = thiz->mEnableStereoPosition;
124    if (oldEnable != enable) {
125        thiz->mEnableStereoPosition = (SLuint8) enable;
126        interface_unlock_exclusive_attributes(thiz, ATTR_GAIN);
127    } else {
128        interface_unlock_exclusive(thiz);
129    }
130    result = SL_RESULT_SUCCESS;
131
132    SL_LEAVE_INTERFACE
133}
134
135
136static SLresult IVolume_IsEnabledStereoPosition(SLVolumeItf self, SLboolean *pEnable)
137{
138    SL_ENTER_INTERFACE
139
140    if (NULL == pEnable) {
141        result = SL_RESULT_PARAMETER_INVALID;
142    } else {
143        IVolume *thiz = (IVolume *) self;
144        interface_lock_peek(thiz);
145        SLboolean enable = thiz->mEnableStereoPosition;
146        interface_unlock_peek(thiz);
147        *pEnable = enable;
148        result = SL_RESULT_SUCCESS;
149    }
150
151    SL_LEAVE_INTERFACE
152}
153
154
155static SLresult IVolume_SetStereoPosition(SLVolumeItf self, SLpermille stereoPosition)
156{
157    SL_ENTER_INTERFACE
158
159    if (!((-1000 <= stereoPosition) && (1000 >= stereoPosition))) {
160        result = SL_RESULT_PARAMETER_INVALID;
161    } else {
162        IVolume *thiz = (IVolume *) self;
163        interface_lock_exclusive(thiz);
164        SLpermille oldStereoPosition = thiz->mStereoPosition;
165        if (oldStereoPosition != stereoPosition) {
166            thiz->mStereoPosition = stereoPosition;
167            interface_unlock_exclusive_attributes(thiz, ATTR_GAIN);
168        } else
169            interface_unlock_exclusive(thiz);
170        result = SL_RESULT_SUCCESS;
171    }
172
173    SL_LEAVE_INTERFACE
174}
175
176
177static SLresult IVolume_GetStereoPosition(SLVolumeItf self, SLpermille *pStereoPosition)
178{
179    SL_ENTER_INTERFACE
180
181    if (NULL == pStereoPosition) {
182        result = SL_RESULT_PARAMETER_INVALID;
183    } else {
184        IVolume *thiz = (IVolume *) self;
185        interface_lock_peek(thiz);
186        SLpermille stereoPosition = thiz->mStereoPosition;
187        interface_unlock_peek(thiz);
188        *pStereoPosition = stereoPosition;
189        result = SL_RESULT_SUCCESS;
190    }
191
192    SL_LEAVE_INTERFACE
193}
194
195
196static const struct SLVolumeItf_ IVolume_Itf = {
197    IVolume_SetVolumeLevel,
198    IVolume_GetVolumeLevel,
199    IVolume_GetMaxVolumeLevel,
200    IVolume_SetMute,
201    IVolume_GetMute,
202    IVolume_EnableStereoPosition,
203    IVolume_IsEnabledStereoPosition,
204    IVolume_SetStereoPosition,
205    IVolume_GetStereoPosition
206};
207
208void IVolume_init(void *self)
209{
210    IVolume *thiz = (IVolume *) self;
211    thiz->mItf = &IVolume_Itf;
212    thiz->mLevel = 0;
213    thiz->mMute = SL_BOOLEAN_FALSE;
214    thiz->mEnableStereoPosition = SL_BOOLEAN_FALSE;
215    thiz->mStereoPosition = 0;
216}
217