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 /* MIDITempo implementation */
18 
19 #include "sles_allinclusive.h"
20 
21 
IMIDITempo_SetTicksPerQuarterNote(SLMIDITempoItf self,SLuint32 tpqn)22 static SLresult IMIDITempo_SetTicksPerQuarterNote(SLMIDITempoItf self, SLuint32 tpqn)
23 {
24     SL_ENTER_INTERFACE
25 
26     if (!(1 <= tpqn && tpqn <= 32767)) {
27         result = SL_RESULT_PARAMETER_INVALID;
28     } else {
29         IMIDITempo *thiz = (IMIDITempo *) self;
30         interface_lock_poke(thiz);
31         thiz->mTicksPerQuarterNote = tpqn;
32         interface_unlock_poke(thiz);
33         result = SL_RESULT_SUCCESS;
34     }
35 
36     SL_LEAVE_INTERFACE
37 }
38 
39 
IMIDITempo_GetTicksPerQuarterNote(SLMIDITempoItf self,SLuint32 * pTpqn)40 static SLresult IMIDITempo_GetTicksPerQuarterNote(SLMIDITempoItf self, SLuint32 *pTpqn)
41 {
42     SL_ENTER_INTERFACE
43 
44     if (NULL == pTpqn) {
45         result = SL_RESULT_PARAMETER_INVALID;
46     } else {
47         IMIDITempo *thiz = (IMIDITempo *) self;
48         interface_lock_peek(thiz);
49         SLuint32 ticksPerQuarterNote = thiz->mTicksPerQuarterNote;
50         interface_unlock_peek(thiz);
51         *pTpqn = ticksPerQuarterNote;
52         result = SL_RESULT_SUCCESS;
53     }
54 
55     SL_LEAVE_INTERFACE
56 }
57 
58 
IMIDITempo_SetMicrosecondsPerQuarterNote(SLMIDITempoItf self,SLmicrosecond uspqn)59 static SLresult IMIDITempo_SetMicrosecondsPerQuarterNote(SLMIDITempoItf self, SLmicrosecond uspqn)
60 {
61     SL_ENTER_INTERFACE
62 
63     // spec says zero, is that correct?
64     if (!(1 <= uspqn && uspqn <= 16777215)) {
65         result = SL_RESULT_PARAMETER_INVALID;
66     } else {
67         IMIDITempo *thiz = (IMIDITempo *) self;
68         interface_lock_poke(thiz);
69         thiz->mMicrosecondsPerQuarterNote = uspqn;
70         interface_unlock_poke(thiz);
71         result = SL_RESULT_SUCCESS;
72     }
73 
74     SL_LEAVE_INTERFACE
75 }
76 
77 
IMIDITempo_GetMicrosecondsPerQuarterNote(SLMIDITempoItf self,SLmicrosecond * uspqn)78 static SLresult IMIDITempo_GetMicrosecondsPerQuarterNote(SLMIDITempoItf self, SLmicrosecond *uspqn)
79 {
80     SL_ENTER_INTERFACE
81 
82     if (NULL == uspqn) {
83         result = SL_RESULT_PARAMETER_INVALID;
84     } else {
85         IMIDITempo *thiz = (IMIDITempo *) self;
86         interface_lock_peek(thiz);
87         SLuint32 microsecondsPerQuarterNote = thiz->mMicrosecondsPerQuarterNote;
88         interface_unlock_peek(thiz);
89         *uspqn = microsecondsPerQuarterNote;
90         result = SL_RESULT_SUCCESS;
91     }
92 
93     SL_LEAVE_INTERFACE
94 }
95 
96 
97 static const struct SLMIDITempoItf_ IMIDITempo_Itf = {
98     IMIDITempo_SetTicksPerQuarterNote,
99     IMIDITempo_GetTicksPerQuarterNote,
100     IMIDITempo_SetMicrosecondsPerQuarterNote,
101     IMIDITempo_GetMicrosecondsPerQuarterNote
102 };
103 
IMIDITempo_init(void * self)104 void IMIDITempo_init(void *self)
105 {
106     IMIDITempo *thiz = (IMIDITempo *) self;
107     thiz->mItf = &IMIDITempo_Itf;
108     thiz->mTicksPerQuarterNote = 32; // wrong
109     thiz->mMicrosecondsPerQuarterNote = 100; // wrong
110 }
111