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