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 /* Seek implementation */
18
19 #include "sles_allinclusive.h"
20
21
ISeek_SetPosition(SLSeekItf self,SLmillisecond pos,SLuint32 seekMode)22 static SLresult ISeek_SetPosition(SLSeekItf self, SLmillisecond pos, SLuint32 seekMode)
23 {
24 SL_ENTER_INTERFACE
25
26 switch (seekMode) {
27 case SL_SEEKMODE_FAST:
28 case SL_SEEKMODE_ACCURATE:
29 {
30 // maximum position is a special value that indicates a seek is not pending
31 if (SL_TIME_UNKNOWN == pos) {
32 pos = SL_TIME_UNKNOWN - 1;
33 }
34 ISeek *thiz = (ISeek *) self;
35 interface_lock_exclusive(thiz);
36 thiz->mPos = pos;
37 // at this point the seek is merely pending, so do not yet update other fields
38 interface_unlock_exclusive_attributes(thiz, ATTR_POSITION);
39 result = SL_RESULT_SUCCESS;
40 }
41 break;
42 default:
43 result = SL_RESULT_PARAMETER_INVALID;
44 break;
45 }
46
47 SL_LEAVE_INTERFACE
48 }
49
50
ISeek_SetLoop(SLSeekItf self,SLboolean loopEnable,SLmillisecond startPos,SLmillisecond endPos)51 static SLresult ISeek_SetLoop(SLSeekItf self, SLboolean loopEnable,
52 SLmillisecond startPos, SLmillisecond endPos)
53 {
54 SL_ENTER_INTERFACE
55
56 if (!(startPos < endPos)) {
57 result = SL_RESULT_PARAMETER_INVALID;
58 } else {
59 ISeek *thiz = (ISeek *) self;
60 interface_lock_exclusive(thiz);
61 #ifdef ANDROID
62 if ((startPos != 0) && (endPos != SL_TIME_UNKNOWN)) {
63 result = SL_RESULT_FEATURE_UNSUPPORTED;
64 } else {
65 switch (IObjectToObjectID((thiz)->mThis)) {
66 case SL_OBJECTID_AUDIOPLAYER: {
67 CAudioPlayer *ap = InterfaceToCAudioPlayer(thiz);
68 if (NULL != ap) {
69 result = android_audioPlayer_loop(ap, loopEnable);
70 } else {
71 result = SL_RESULT_PARAMETER_INVALID;
72 }
73 break;
74 }
75 case XA_OBJECTID_MEDIAPLAYER: {
76 CMediaPlayer *mp = InterfaceToCMediaPlayer(thiz);
77 if (NULL != mp) {
78 result = android_Player_loop(mp, loopEnable);
79 } else {
80 result = SL_RESULT_PARAMETER_INVALID;
81 }
82 break;
83 }
84 default: {
85 result = SL_RESULT_PARAMETER_INVALID;
86 }
87 }
88 if (SL_RESULT_SUCCESS == result) {
89 thiz->mLoopEnabled = SL_BOOLEAN_FALSE != loopEnable; // normalize
90 // start and end positions already initialized to [0, end of stream]
91 /*thiz->mStartPos = 0;
92 thiz->mEndPos = (SLmillisecond) SL_TIME_UNKNOWN;*/
93 }
94 }
95 #else
96 thiz->mLoopEnabled = SL_BOOLEAN_FALSE != loopEnable; // normalize
97 thiz->mStartPos = startPos;
98 thiz->mEndPos = endPos;
99 result = SL_RESULT_SUCCESS;
100 #endif
101 interface_unlock_exclusive(thiz);
102 }
103
104 SL_LEAVE_INTERFACE
105 }
106
107
ISeek_GetLoop(SLSeekItf self,SLboolean * pLoopEnabled,SLmillisecond * pStartPos,SLmillisecond * pEndPos)108 static SLresult ISeek_GetLoop(SLSeekItf self, SLboolean *pLoopEnabled,
109 SLmillisecond *pStartPos, SLmillisecond *pEndPos)
110 {
111 SL_ENTER_INTERFACE
112
113 if (NULL == pLoopEnabled || NULL == pStartPos || NULL == pEndPos) {
114 result = SL_RESULT_PARAMETER_INVALID;
115 } else {
116 ISeek *thiz = (ISeek *) self;
117 interface_lock_shared(thiz);
118 SLboolean loopEnabled = thiz->mLoopEnabled;
119 SLmillisecond startPos = thiz->mStartPos;
120 SLmillisecond endPos = thiz->mEndPos;
121 interface_unlock_shared(thiz);
122 *pLoopEnabled = loopEnabled;
123 *pStartPos = startPos;
124 *pEndPos = endPos;
125 result = SL_RESULT_SUCCESS;
126 }
127
128 SL_LEAVE_INTERFACE
129 }
130
131
132 static const struct SLSeekItf_ ISeek_Itf = {
133 ISeek_SetPosition,
134 ISeek_SetLoop,
135 ISeek_GetLoop
136 };
137
ISeek_init(void * self)138 void ISeek_init(void *self)
139 {
140 ISeek *thiz = (ISeek *) self;
141 thiz->mItf = &ISeek_Itf;
142 thiz->mPos = (SLmillisecond) SL_TIME_UNKNOWN;
143 thiz->mStartPos = (SLmillisecond) 0;
144 thiz->mEndPos = (SLmillisecond) SL_TIME_UNKNOWN;
145 thiz->mLoopEnabled = SL_BOOLEAN_FALSE;
146 }
147