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 /* RatePitch implementation */
18
19 #include "sles_allinclusive.h"
20
21
IRatePitch_SetRate(SLRatePitchItf self,SLpermille rate)22 static SLresult IRatePitch_SetRate(SLRatePitchItf self, SLpermille rate)
23 {
24 SL_ENTER_INTERFACE
25
26 IRatePitch *thiz = (IRatePitch *) self;
27 if (!(thiz->mMinRate <= rate && rate <= thiz->mMaxRate)) {
28 result = SL_RESULT_PARAMETER_INVALID;
29 } else {
30 interface_lock_poke(thiz);
31 thiz->mRate = rate;
32 interface_unlock_poke(thiz);
33 result = SL_RESULT_SUCCESS;
34 }
35
36 SL_LEAVE_INTERFACE
37 }
38
39
IRatePitch_GetRate(SLRatePitchItf self,SLpermille * pRate)40 static SLresult IRatePitch_GetRate(SLRatePitchItf self, SLpermille *pRate)
41 {
42 SL_ENTER_INTERFACE
43
44 if (NULL == pRate) {
45 result = SL_RESULT_PARAMETER_INVALID;
46 } else {
47 IRatePitch *thiz = (IRatePitch *) self;
48 interface_lock_peek(thiz);
49 SLpermille rate = thiz->mRate;
50 interface_unlock_peek(thiz);
51 *pRate = rate;
52 result = SL_RESULT_SUCCESS;
53 }
54
55 SL_LEAVE_INTERFACE
56 }
57
58
IRatePitch_GetRatePitchCapabilities(SLRatePitchItf self,SLpermille * pMinRate,SLpermille * pMaxRate)59 static SLresult IRatePitch_GetRatePitchCapabilities(SLRatePitchItf self,
60 SLpermille *pMinRate, SLpermille *pMaxRate)
61 {
62 SL_ENTER_INTERFACE
63
64 // per spec, each is optional, and does not require that at least one must be non-NULL
65 #if 0
66 if (NULL == pMinRate && NULL == pMaxRate)
67 result = SL_RESULT_PARAMETER_INVALID;
68 #endif
69 IRatePitch *thiz = (IRatePitch *) self;
70 // const, so no lock required
71 SLpermille minRate = thiz->mMinRate;
72 SLpermille maxRate = thiz->mMaxRate;
73 if (NULL != pMinRate)
74 *pMinRate = minRate;
75 if (NULL != pMaxRate)
76 *pMaxRate = maxRate;
77 result = SL_RESULT_SUCCESS;
78
79 SL_LEAVE_INTERFACE
80 }
81
82
83 static const struct SLRatePitchItf_ IRatePitch_Itf = {
84 IRatePitch_SetRate,
85 IRatePitch_GetRate,
86 IRatePitch_GetRatePitchCapabilities
87 };
88
IRatePitch_init(void * self)89 void IRatePitch_init(void *self)
90 {
91 IRatePitch *thiz = (IRatePitch *) self;
92 thiz->mItf = &IRatePitch_Itf;
93 thiz->mRate = 1000;
94 // const
95 thiz->mMinRate = 500;
96 thiz->mMaxRate = 2000;
97 }
98