IMetadataTraversal.c revision 262059f71a68edc5e510427c63f5f1623d3672a8 
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/* MetadataTraversal implementation */
18
19#include "sles_allinclusive.h"
20
21
22static SLresult IMetadataTraversal_SetMode(SLMetadataTraversalItf self, SLuint32 mode)
23{
24    SL_ENTER_INTERFACE
25
26    switch (mode) {
27    case SL_METADATATRAVERSALMODE_ALL:
28    case SL_METADATATRAVERSALMODE_NODE:
29        {
30        IMetadataTraversal *this = (IMetadataTraversal *) self;
31        interface_lock_poke(this);
32        this->mMode = mode;
33        interface_unlock_poke(this);
34        result = SL_RESULT_SUCCESS;
35        }
36        break;
37    default:
38        result = SL_RESULT_PARAMETER_INVALID;
39        break;
40    }
41
42    SL_LEAVE_INTERFACE
43}
44
45
46static SLresult IMetadataTraversal_GetChildCount(SLMetadataTraversalItf self, SLuint32 *pCount)
47{
48    SL_ENTER_INTERFACE
49
50    if (NULL == pCount) {
51        result = SL_RESULT_PARAMETER_INVALID;
52    } else {
53        IMetadataTraversal *this = (IMetadataTraversal *) self;
54        interface_lock_peek(this);
55        SLuint32 count = this->mCount;
56        interface_unlock_peek(this);
57        *pCount = count;
58        result = SL_RESULT_SUCCESS;
59    }
60
61    SL_LEAVE_INTERFACE
62}
63
64
65static SLresult IMetadataTraversal_GetChildMIMETypeSize(
66    SLMetadataTraversalItf self, SLuint32 index, SLuint32 *pSize)
67{
68    SL_ENTER_INTERFACE
69
70    if (NULL == pSize) {
71        result = SL_RESULT_PARAMETER_INVALID;
72    } else {
73        IMetadataTraversal *this = (IMetadataTraversal *) self;
74        interface_lock_peek(this);
75        SLuint32 size = this->mSize;
76        interface_unlock_peek(this);
77        *pSize = size;
78        result = SL_RESULT_SUCCESS;
79    }
80
81    SL_LEAVE_INTERFACE
82}
83
84
85static SLresult IMetadataTraversal_GetChildInfo(SLMetadataTraversalItf self, SLuint32 index,
86    SLint32 *pNodeID, SLuint32 *pType, SLuint32 size, SLchar *pMimeType)
87{
88    SL_ENTER_INTERFACE
89
90    //IMetadataTraversal *this = (IMetadataTraversal *) self;
91    result = SL_RESULT_FEATURE_UNSUPPORTED;
92
93    SL_LEAVE_INTERFACE
94}
95
96
97static SLresult IMetadataTraversal_SetActiveNode(SLMetadataTraversalItf self, SLuint32 index)
98{
99    SL_ENTER_INTERFACE
100
101    if (SL_NODE_PARENT == index) {
102        ;
103    }
104    IMetadataTraversal *this = (IMetadataTraversal *) self;
105    this->mIndex = index;
106    result = SL_RESULT_PARAMETER_INVALID;
107
108    SL_LEAVE_INTERFACE
109}
110
111
112static const struct SLMetadataTraversalItf_ IMetadataTraversal_Itf = {
113    IMetadataTraversal_SetMode,
114    IMetadataTraversal_GetChildCount,
115    IMetadataTraversal_GetChildMIMETypeSize,
116    IMetadataTraversal_GetChildInfo,
117    IMetadataTraversal_SetActiveNode
118};
119
120void IMetadataTraversal_init(void *self)
121{
122    IMetadataTraversal *this = (IMetadataTraversal *) self;
123    this->mItf = &IMetadataTraversal_Itf;
124    this->mIndex = 0;
125    this->mMode = SL_METADATATRAVERSALMODE_NODE;
126    this->mCount = 0;
127    this->mSize = 0;
128}
129