IMIDIMessage.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/* MIDIMessage implementation */
18
19#include "sles_allinclusive.h"
20
21
22static SLresult IMIDIMessage_SendMessage(SLMIDIMessageItf self, const SLuint8 *data,
23    SLuint32 length)
24{
25    SL_ENTER_INTERFACE
26
27    if (NULL == data) {
28        result = SL_RESULT_PARAMETER_INVALID;
29    } else {
30        //IMIDIMessage *thiz = (IMIDIMessage *) self;
31        result = SL_RESULT_FEATURE_UNSUPPORTED;
32    }
33
34    SL_LEAVE_INTERFACE
35}
36
37
38static SLresult IMIDIMessage_RegisterMetaEventCallback(SLMIDIMessageItf self,
39    slMetaEventCallback callback, void *pContext)
40{
41    SL_ENTER_INTERFACE
42
43    IMIDIMessage *thiz = (IMIDIMessage *) self;
44    interface_lock_exclusive(thiz);
45    thiz->mMetaEventCallback = callback;
46    thiz->mMetaEventContext = pContext;
47    interface_unlock_exclusive(thiz);
48    result = SL_RESULT_SUCCESS;
49
50    SL_LEAVE_INTERFACE
51}
52
53
54static SLresult IMIDIMessage_RegisterMIDIMessageCallback(SLMIDIMessageItf self,
55    slMIDIMessageCallback callback, void *pContext)
56{
57    SL_ENTER_INTERFACE
58
59    IMIDIMessage *thiz = (IMIDIMessage *) self;
60    interface_lock_exclusive(thiz);
61    thiz->mMessageCallback = callback;
62    thiz->mMessageContext = pContext;
63    interface_unlock_exclusive(thiz);
64    result = SL_RESULT_SUCCESS;
65
66    SL_LEAVE_INTERFACE
67}
68
69
70static SLresult IMIDIMessage_AddMIDIMessageCallbackFilter(SLMIDIMessageItf self,
71    SLuint32 messageType)
72{
73    SL_ENTER_INTERFACE
74
75    switch (messageType) {
76    case SL_MIDIMESSAGETYPE_NOTE_ON_OFF:
77    case SL_MIDIMESSAGETYPE_POLY_PRESSURE:
78    case SL_MIDIMESSAGETYPE_CONTROL_CHANGE:
79    case SL_MIDIMESSAGETYPE_PROGRAM_CHANGE:
80    case SL_MIDIMESSAGETYPE_CHANNEL_PRESSURE:
81    case SL_MIDIMESSAGETYPE_PITCH_BEND:
82    case SL_MIDIMESSAGETYPE_SYSTEM_MESSAGE:
83        {
84        SLuint8 messageTypeMask = 1 << messageType;
85        IMIDIMessage *thiz = (IMIDIMessage *) self;
86        interface_lock_exclusive(thiz);
87        thiz->mMessageTypes |= messageTypeMask;
88        interface_unlock_exclusive(thiz);
89        result = SL_RESULT_SUCCESS;
90        }
91        break;
92    default:
93        result = SL_RESULT_PARAMETER_INVALID;
94        break;
95    }
96
97    SL_LEAVE_INTERFACE
98}
99
100
101static SLresult IMIDIMessage_ClearMIDIMessageCallbackFilter(SLMIDIMessageItf self)
102{
103    SL_ENTER_INTERFACE
104
105    IMIDIMessage *thiz = (IMIDIMessage *) self;
106    interface_lock_exclusive(thiz);
107    thiz->mMessageTypes = 0;
108    interface_unlock_exclusive(thiz);
109    result = SL_RESULT_SUCCESS;
110
111    SL_LEAVE_INTERFACE
112}
113
114
115static const struct SLMIDIMessageItf_ IMIDIMessage_Itf = {
116    IMIDIMessage_SendMessage,
117    IMIDIMessage_RegisterMetaEventCallback,
118    IMIDIMessage_RegisterMIDIMessageCallback,
119    IMIDIMessage_AddMIDIMessageCallbackFilter,
120    IMIDIMessage_ClearMIDIMessageCallbackFilter
121};
122
123void IMIDIMessage_init(void *self)
124{
125    IMIDIMessage *thiz = (IMIDIMessage *) self;
126    thiz->mItf = &IMIDIMessage_Itf;
127    thiz->mMetaEventCallback = NULL;
128    thiz->mMetaEventContext = NULL;
129    thiz->mMessageCallback = NULL;
130    thiz->mMessageContext = NULL;
131    thiz->mMessageTypes = 0;
132}
133