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
22static 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
40static 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
59static 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
83static const struct SLRatePitchItf_ IRatePitch_Itf = {
84    IRatePitch_SetRate,
85    IRatePitch_GetRate,
86    IRatePitch_GetRatePitchCapabilities
87};
88
89void 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