1 /* ------------------------------------------------------------------
2 * Copyright (C) 1998-2009 PacketVideo
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
13 * express or implied.
14 * See the License for the specific language governing permissions
15 * and limitations under the License.
16 * -------------------------------------------------------------------
17 */
18
19 #include "pvmf_basic_errorinfomessage.h"
20 #include "oscl_mem.h"
21
PVMFBasicErrorInfoMessage()22 OSCL_EXPORT_REF PVMFBasicErrorInfoMessage::PVMFBasicErrorInfoMessage() :
23 iEventCode(0),
24 iNextMessage(NULL),
25 iRefCount(1)
26 {
27 }
28
PVMFBasicErrorInfoMessage(int32 aCode,PVUuid & aUuid,PVMFErrorInfoMessageInterface * aNextMsg)29 OSCL_EXPORT_REF PVMFBasicErrorInfoMessage::PVMFBasicErrorInfoMessage(int32 aCode, PVUuid& aUuid, PVMFErrorInfoMessageInterface* aNextMsg) :
30 iRefCount(1)
31 {
32 // Save the event info
33 iEventCode = aCode;
34 iEventUuid = aUuid;
35 iNextMessage = aNextMsg;
36
37 // Increment the ref count for the next message in the list
38 if (iNextMessage)
39 {
40 iNextMessage->addRef();
41 }
42 }
43
~PVMFBasicErrorInfoMessage()44 OSCL_EXPORT_REF PVMFBasicErrorInfoMessage::~PVMFBasicErrorInfoMessage()
45 {
46 // If the destructor is called directly (instead of via removeRef())
47 // then the ref count for the next message in the list needs to decremented
48 if (iNextMessage)
49 {
50 iNextMessage->removeRef();
51 iNextMessage = NULL;
52 }
53 }
destroy()54 OSCL_EXPORT_REF void PVMFBasicErrorInfoMessage::destroy()
55 {
56 OSCL_DELETE(this);
57 }
58
SetEventCodeUUID(int32 aCode,PVUuid aUuid)59 OSCL_EXPORT_REF void PVMFBasicErrorInfoMessage::SetEventCodeUUID(int32 aCode, PVUuid aUuid)
60 {
61 // Set event code and UUID
62 iEventCode = aCode;
63 iEventUuid = aUuid;
64 }
65
SetNextMessage(PVMFErrorInfoMessageInterface & aNextMsg)66 OSCL_EXPORT_REF void PVMFBasicErrorInfoMessage::SetNextMessage(PVMFErrorInfoMessageInterface& aNextMsg)
67 {
68 // Remove reference to existing one if present
69 if (iNextMessage)
70 {
71 iNextMessage->removeRef();
72 }
73
74 // Save the reference and increment ref for it
75 iNextMessage = &aNextMsg;
76 iNextMessage->addRef();
77 }
78
GetCodeUUID(int32 & aCode,PVUuid & aUuid)79 OSCL_EXPORT_REF void PVMFBasicErrorInfoMessage::GetCodeUUID(int32& aCode, PVUuid& aUuid)
80 {
81 // Return event code and UUID
82 aCode = iEventCode;
83 aUuid = iEventUuid;
84 }
85
GetNextMessage()86 OSCL_EXPORT_REF PVMFErrorInfoMessageInterface* PVMFBasicErrorInfoMessage::GetNextMessage()
87 {
88 // Return the next message in the list
89 return iNextMessage;
90 }
91
addRef()92 OSCL_EXPORT_REF void PVMFBasicErrorInfoMessage::addRef()
93 {
94 // Increment this object's ref count
95 ++iRefCount;
96
97 // Increment ref count for the next message in the list
98 if (iNextMessage)
99 {
100 iNextMessage->addRef();
101 }
102 }
103
removeRef()104 OSCL_EXPORT_REF void PVMFBasicErrorInfoMessage::removeRef()
105 {
106 // Decrement ref count for the next message in the list
107 if (iNextMessage)
108 {
109 iNextMessage->removeRef();
110 }
111
112 // Decrement this object's ref count
113 --iRefCount;
114
115 // If ref count reaches 0 then destroy this object automatically
116 if (iRefCount <= 0)
117 {
118 // The next message's refcount has already been decremented so
119 // set to NULL so the destructor won't decrement again.
120 iNextMessage = NULL;
121 // Destroy this instance.
122 destroy();
123 }
124 }
125
queryInterface(const PVUuid & uuid,PVInterface * & iface)126 OSCL_EXPORT_REF bool PVMFBasicErrorInfoMessage::queryInterface(const PVUuid& uuid, PVInterface*& iface)
127 {
128 // Only returns the error/info message interface
129 if (uuid == PVMFErrorInfoMessageInterfaceUUID)
130 {
131 PVMFErrorInfoMessageInterface* myInterface = OSCL_STATIC_CAST(PVMFErrorInfoMessageInterface*, this);
132 iface = OSCL_STATIC_CAST(PVInterface*, myInterface);
133 }
134 else
135 {
136 return false;
137 }
138
139 return true;
140 }
141
142