ISeek.cpp revision 0b167267bda99b68346045ccab14e810121d5de4 
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
21static SLresult ISeek_SetPosition(SLSeekItf self, SLmillisecond pos,
22    SLuint32 seekMode)
23{
24    switch (seekMode) {
25    case SL_SEEKMODE_FAST:
26    case SL_SEEKMODE_ACCURATE:
27        break;
28    default:
29        return SL_RESULT_PARAMETER_INVALID;
30    }
31    ISeek *this = (ISeek *) self;
32    interface_lock_poke(this);
33    this->mPos = pos;
34    interface_unlock_poke(this);
35    return SL_RESULT_SUCCESS;
36}
37
38static SLresult ISeek_SetLoop(SLSeekItf self, SLboolean loopEnable,
39    SLmillisecond startPos, SLmillisecond endPos)
40{
41    ISeek *this = (ISeek *) self;
42    interface_lock_exclusive(this);
43    this->mLoopEnabled = loopEnable;
44    this->mStartPos = startPos;
45    this->mEndPos = endPos;
46    interface_unlock_exclusive(this);
47    return SL_RESULT_SUCCESS;
48}
49
50static SLresult ISeek_GetLoop(SLSeekItf self, SLboolean *pLoopEnabled,
51    SLmillisecond *pStartPos, SLmillisecond *pEndPos)
52{
53    if (NULL == pLoopEnabled || NULL == pStartPos || NULL == pEndPos)
54        return SL_RESULT_PARAMETER_INVALID;
55    ISeek *this = (ISeek *) self;
56    interface_lock_shared(this);
57    SLboolean loopEnabled = this->mLoopEnabled;
58    SLmillisecond startPos = this->mStartPos;
59    SLmillisecond endPos = this->mEndPos;
60    interface_unlock_shared(this);
61    *pLoopEnabled = loopEnabled;
62    *pStartPos = startPos;
63    *pEndPos = endPos;
64    return SL_RESULT_SUCCESS;
65}
66
67static const struct SLSeekItf_ ISeek_Itf = {
68    ISeek_SetPosition,
69    ISeek_SetLoop,
70    ISeek_GetLoop
71};
72
73void ISeek_init(void *self)
74{
75    ISeek *this = (ISeek *) self;
76    this->mItf = &ISeek_Itf;
77    this->mPos = (SLmillisecond) -1;
78    this->mStartPos = (SLmillisecond) -1;
79    this->mEndPos = (SLmillisecond) -1;
80#ifndef NDEBUG
81    this->mLoopEnabled = SL_BOOLEAN_FALSE;
82#endif
83}
84