1 /* |
|
2 * Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies). |
|
3 * All rights reserved. |
|
4 * This component and the accompanying materials are made available |
|
5 * under the terms of "Eclipse Public License v1.0" |
|
6 * which accompanies this distribution, and is available |
|
7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
|
8 * |
|
9 * Initial Contributors: |
|
10 * Nokia Corporation - initial contribution. |
|
11 * |
|
12 * Contributors: |
|
13 * |
|
14 * Description: Generic hid finder implementation |
|
15 * |
|
16 */ |
|
17 |
|
18 |
|
19 #include <e32std.h> |
|
20 #include <e32svr.h> |
|
21 |
|
22 #include "finder.h" |
|
23 #include "debug.h" |
|
24 |
|
25 // ---------------------------------------------------------------------- |
|
26 |
|
27 // Define this for additional debug output (this file only): |
|
28 #define EXTRA_DEBUG |
|
29 |
|
30 #ifdef EXTRA_DEBUG |
|
31 #define DBG(a) a; |
|
32 #else |
|
33 #define DBG(a) |
|
34 #endif |
|
35 |
|
36 // ======== MEMBER FUNCTIONS ======== |
|
37 |
|
38 // --------------------------------------------------------------------------- |
|
39 // THeadsetFinder() |
|
40 // --------------------------------------------------------------------------- |
|
41 // |
|
42 THeadsetFinder::THeadsetFinder() : |
|
43 iAppCollection( 0 ), iFieldList() |
|
44 { |
|
45 // Nothing else to do |
|
46 } |
|
47 |
|
48 // -------------------------------------------------------------------------- |
|
49 // From class MHidFieldFinder |
|
50 // BeginCollection() |
|
51 // -------------------------------------------------------------------------- |
|
52 // |
|
53 TBool THeadsetFinder::BeginCollection( const CCollection* aCollection ) |
|
54 { |
|
55 TBool examineCollection = ETrue; |
|
56 |
|
57 const TInt KConsumerControl = 0x01; |
|
58 |
|
59 // Only look at top-level application (consumer devices: consumer |
|
60 // control) collections: |
|
61 // |
|
62 |
|
63 if ( ( aCollection->IsApplication() ) && ( iAppCollection == 0 ) ) |
|
64 { |
|
65 // Top-level application collection. |
|
66 |
|
67 if ( ( aCollection->UsagePage() == EUsagePageConsumer ) |
|
68 && ( aCollection->Usage() == KConsumerControl ) ) |
|
69 { |
|
70 TRACE_INFO(_L("[HID]\tTHeadsetFinder::BeginCollection: this is \ |
|
71 consumer collection ")); |
|
72 // Collection is a consumer device: |
|
73 iAppCollection = aCollection; |
|
74 iFieldList.Reset(); |
|
75 } |
|
76 else |
|
77 { |
|
78 TRACE_INFO(_L("[HID]\tTHeadsetFinder::BeginCollection: not \ |
|
79 consumer collection")); |
|
80 // Skip other types of top-level application collection: |
|
81 examineCollection = EFalse; |
|
82 } |
|
83 } |
|
84 return examineCollection; |
|
85 |
|
86 } |
|
87 |
|
88 // --------------------------------------------------------------------------- |
|
89 // From class MHidFieldFinder |
|
90 // EndCollection() |
|
91 // --------------------------------------------------------------------------- |
|
92 // |
|
93 TBool THeadsetFinder::EndCollection( const CCollection* aCollection ) |
|
94 { |
|
95 TBool continueSearch = ETrue; |
|
96 |
|
97 TRACE_INFO(_L("[HID]\tTHeadsetFinder::EndCollection")); |
|
98 if ( aCollection == iAppCollection ) |
|
99 { |
|
100 // Top-level application(Consumer Devices:Consumer Control) finished: |
|
101 // |
|
102 iAppCollection = 0; |
|
103 |
|
104 // Stop if we've found a device we can use in this |
|
105 // application collection: |
|
106 // |
|
107 continueSearch = !Found(); |
|
108 } |
|
109 |
|
110 return continueSearch; |
|
111 } |
|
112 |
|
113 // --------------------------------------------------------------------------- |
|
114 // From class MHidFieldFinder |
|
115 // Field() |
|
116 // --------------------------------------------------------------------------- |
|
117 // |
|
118 void THeadsetFinder::Field( const CField* aField ) |
|
119 { |
|
120 TRACE_INFO((_L("[HID]\tTHeadsetFinder::Field( 0x%08x)"),aField)); |
|
121 TInt error = KErrNone; |
|
122 if ( iAppCollection ) |
|
123 { |
|
124 |
|
125 if ( IsTelephony( aField ) ) |
|
126 { |
|
127 TRACE_INFO((_L("[HID]\tTHeadsetFinder::Field, telephony"))); |
|
128 error = iFieldList.Append( aField ); |
|
129 if ( error != KErrNone ) |
|
130 { |
|
131 TRACE_INFO((_L("[HID]\tTHeadsetFinder::Field, telephony \ |
|
132 failed"))); |
|
133 } |
|
134 } |
|
135 else if ( IsConsumer( aField ) ) |
|
136 { |
|
137 TRACE_INFO(_L("[HID]\tTHeadsetFinder::Field, consumer")); |
|
138 error = iFieldList.Append( aField ); |
|
139 if ( error != KErrNone ) |
|
140 { |
|
141 TRACE_INFO((_L("[HID]\tTHeadsetFinder::Field, telephony \ |
|
142 failed"))); |
|
143 } |
|
144 } |
|
145 else |
|
146 { |
|
147 TRACE_INFO(_L("[HID]\tTHeadsetFinder::Field, other, or empty \ |
|
148 field")); |
|
149 } |
|
150 } |
|
151 } |
|
152 |
|
153 // --------------------------------------------------------------------------- |
|
154 // IsConsumer() |
|
155 // --------------------------------------------------------------------------- |
|
156 // |
|
157 TBool THeadsetFinder::IsConsumer( const CField* aField ) const |
|
158 { |
|
159 TBool found = EFalse; |
|
160 |
|
161 if ( aField->IsInput() && aField->IsData() && ( aField->UsagePage() |
|
162 == EUsagePageConsumer ) ) |
|
163 { |
|
164 #ifdef _DEBUG |
|
165 for ( TInt i = 0; i < aField->UsageCount(); i++ ) |
|
166 { |
|
167 TRACE_INFO((_L("[HID]\tTHeadsetFinder::IsConsumer: Usage %d: \ |
|
168 %02x"),i,aField->Usage(i))); |
|
169 } |
|
170 #endif |
|
171 // *** Add usage test here *** |
|
172 TRACE_INFO(_L("[HID]\tTHeadsetFinder::IsConsumer: Consumer keys \ |
|
173 field found\r\n")); |
|
174 found = ETrue; |
|
175 } |
|
176 return found; |
|
177 } |
|
178 |
|
179 // --------------------------------------------------------------------------- |
|
180 // IsTelephony() |
|
181 // --------------------------------------------------------------------------- |
|
182 // |
|
183 TBool THeadsetFinder::IsTelephony( const CField* aField ) const |
|
184 { |
|
185 TBool found = EFalse; |
|
186 |
|
187 if ( aField->IsInput() && aField->IsData() && ( aField->UsagePage() |
|
188 == EUsagePageTelephony ) ) |
|
189 { |
|
190 const TInt KHookSwitch = 0x20; |
|
191 const TInt KPhoneMute = 0x2F; |
|
192 #ifdef _DEBUG |
|
193 for ( TInt i = 0; i < aField->UsageCount(); i++ ) |
|
194 { |
|
195 TRACE_INFO((_L("[HID]\tTHeadsetFinder::IsTelephony: \ |
|
196 Usage %d: %02x"),i,aField->Usage(i))); |
|
197 } |
|
198 #endif |
|
199 if ( ( aField->UsageMin() <= KPhoneMute ) && ( aField->UsageMax() |
|
200 >= KHookSwitch ) ) |
|
201 { |
|
202 TRACE_INFO(_L("[HID]\tTHeadsetFinder::IsTelephony: Telephony \ |
|
203 field found")); |
|
204 found = ETrue; |
|
205 } |
|
206 } |
|
207 return found; |
|
208 } |
|
209 |
|
210 // --------------------------------------------------------------------------- |
|
211 // EmptyList() |
|
212 // --------------------------------------------------------------------------- |
|
213 // |
|
214 void THeadsetFinder::EmptyList() |
|
215 { |
|
216 iFieldList.Reset(); |
|
217 } |
|
218 |
|
219 // --------------------------------------------------------------------------- |
|
220 // FieldCount() |
|
221 // --------------------------------------------------------------------------- |
|
222 // |
|
223 TInt THeadsetFinder::FieldCount() |
|
224 { |
|
225 return iFieldList.Count(); |
|
226 } |
|
227 |
|
228 // --------------------------------------------------------------------------- |
|
229 // GetFieldAtIndex() |
|
230 // --------------------------------------------------------------------------- |
|
231 // |
|
232 CField* THeadsetFinder::GetFieldAtIndex( TInt aIndex ) |
|
233 { |
|
234 return iFieldList[aIndex]; |
|
235 } |
|
236 |
|
237 // --------------------------------------------------------------------------- |
|
238 // Found() |
|
239 // --------------------------------------------------------------------------- |
|
240 // |
|
241 TBool THeadsetFinder::Found() const |
|
242 { |
|
243 return ( iFieldList.Count() != 0 ); |
|
244 } |
|