|
1 // Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies). |
|
2 // All rights reserved. |
|
3 // This component and the accompanying materials are made available |
|
4 // under the terms of "Eclipse Public License v1.0" |
|
5 // which accompanies this distribution, and is available |
|
6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
|
7 // |
|
8 // Initial Contributors: |
|
9 // Nokia Corporation - initial contribution. |
|
10 // |
|
11 // Contributors: |
|
12 // |
|
13 // Description: |
|
14 // |
|
15 |
|
16 /** |
|
17 @file |
|
18 @internalComponent |
|
19 */ |
|
20 |
|
21 #include <graphics/wsgraphicscontext.h> |
|
22 #include "mmfsubtitlegraphicdrawer.h" |
|
23 |
|
24 // Compensation value in microseconds to account for differences in the requested callback time and the actual |
|
25 // time the callback is delivered |
|
26 static const TInt KClockDrift=100000; |
|
27 |
|
28 CMMFSubtitleGraphicDrawer* CMMFSubtitleGraphicDrawer::NewL() |
|
29 { |
|
30 CMMFSubtitleGraphicDrawer* self = new(ELeave) CMMFSubtitleGraphicDrawer(); |
|
31 return self; |
|
32 } |
|
33 |
|
34 CMMFSubtitleGraphicDrawer::~CMMFSubtitleGraphicDrawer() |
|
35 { |
|
36 delete iBitmap1; |
|
37 delete iBitmap2; |
|
38 delete iTempBitmap; |
|
39 } |
|
40 |
|
41 void CMMFSubtitleGraphicDrawer::ConstructL(MWsGraphicDrawerEnvironment& aEnv, const TGraphicDrawerId& aId, MWsClient& aOwner, const TDesC8& /*aData*/) |
|
42 { |
|
43 // Note this method is called by the baseclass not CMMFSubtitleGraphicDrawer |
|
44 BaseConstructL(aEnv, aId, aOwner); |
|
45 |
|
46 // Construct bitmap objects. Do this here as we can leave usefully with |
|
47 // any construction errors |
|
48 iBitmap1 = new (ELeave) CFbsBitmap(); |
|
49 iBitmap2 = new (ELeave) CFbsBitmap(); |
|
50 iTempBitmap = new (ELeave) CFbsBitmap(); |
|
51 } |
|
52 |
|
53 |
|
54 // From CwsGraphicDrawer |
|
55 void CMMFSubtitleGraphicDrawer::HandleMessage(const TDesC8& aData) |
|
56 { |
|
57 // Retreive message type from buffer |
|
58 TInt8 msgType = aData[0]; |
|
59 |
|
60 switch (msgType) |
|
61 { |
|
62 case ESubtitleCrpMessageInit: |
|
63 { |
|
64 iCaptureRegion = ETrue; |
|
65 TPckgBuf<TSubtitleCrpMsgInit> message; |
|
66 message.Copy(aData); |
|
67 ProcessMessageInit(message()); |
|
68 } |
|
69 break; |
|
70 |
|
71 case ESubtitleCrpMessageInitSimple: |
|
72 iCaptureRegion = ETrue; |
|
73 iBitmap1Valid=EFalse; |
|
74 iBitmap2Valid=EFalse; |
|
75 iTempBitmapValid=ETrue; |
|
76 break; |
|
77 |
|
78 case ESubtitleCrpMessageDrawFrame: |
|
79 { |
|
80 iState = ESubtitleGraphicStateDrawFrame; |
|
81 TPckgBuf<TSubtitleCrpMsgDrawFrame> message; |
|
82 message.Copy(aData); |
|
83 ProcessMessageDrawFrame(message()); |
|
84 } |
|
85 break; |
|
86 |
|
87 case ESubtitleCrpMessageSwapFrame: |
|
88 { |
|
89 iState = ESubtitleGraphicStateSwapFrame; |
|
90 TPckgBuf<TSubtitleCrpMsgRenderSwapFrame> message; |
|
91 message.Copy(aData); |
|
92 ProcessMessageSwapFrame(message()); |
|
93 } |
|
94 break; |
|
95 |
|
96 case ESubtitleCrpMessageClear: |
|
97 iDisplayClearDue.UniversalTime(); |
|
98 iState = ESubtitleGraphicStateClear; |
|
99 break; |
|
100 |
|
101 default: |
|
102 // Silently ignore unrecognised messages |
|
103 // Clear messages for example require no further processing |
|
104 // Set the state to waiting so DoDraw will do nothing. |
|
105 iState = ESubtitleGraphicStateWaiting; |
|
106 break; |
|
107 } |
|
108 |
|
109 // Note clear messages require no further processing we just need to invalidate the display |
|
110 |
|
111 // Ask WSERV to redraw the CRP |
|
112 Invalidate(); |
|
113 } |
|
114 |
|
115 void CMMFSubtitleGraphicDrawer::DoDraw(MWsGc& aGc, const TRect& aRect, const TDesC8& /*aData*/) const |
|
116 { |
|
117 // For some crp rendering states we need to ensure that this DoDraw has been called |
|
118 // in response to Invalidate() and not generated in response to a portion of the CRP |
|
119 // becoming invald for some reason (menus, dialogs etc) |
|
120 |
|
121 // Store the invalid region as our subtitle region to complete initialization. |
|
122 if (iCaptureRegion) |
|
123 { |
|
124 iSubtitleRegion = aRect; |
|
125 iCaptureRegion = EFalse; |
|
126 } |
|
127 |
|
128 // If the current state is waiting we do dont need to do anything |
|
129 if ((iSubtitleRegion.IsEmpty())||(iState==ESubtitleGraphicStateWaiting)) |
|
130 { |
|
131 return; |
|
132 } |
|
133 |
|
134 switch(iState) |
|
135 { |
|
136 case ESubtitleGraphicStateDrawFrame: |
|
137 case ESubtitleGraphicStateSwapFrame: |
|
138 // Blt new content |
|
139 DoBitBlt(aGc, iDirtyRegion); |
|
140 |
|
141 if ( iDisplayDuration.Int64() > 0 ) |
|
142 { |
|
143 // Schedule a clear frame to remove this subtitle after the requested time |
|
144 // Note clear messages require no further processing we just need to schedule a redraw |
|
145 aGc.ScheduleAnimation(iSubtitleRegion, iDisplayDuration.Int64()); |
|
146 iDisplayClearDue.UniversalTime(); |
|
147 iDisplayClearDue=iDisplayDuration.Int64()+iDisplayClearDue.Int64()-KClockDrift; |
|
148 iState = ESubtitleGraphicStateClear; |
|
149 } |
|
150 else |
|
151 { |
|
152 // Redraw this frames content until instructed to stop |
|
153 iState = ESubtitleGraphicStateRefreshContent; |
|
154 } |
|
155 break; |
|
156 |
|
157 case ESubtitleGraphicStateRefreshContent: |
|
158 // Refresh current frame content |
|
159 DoBitBlt(aGc, iDirtyRegion); |
|
160 break; |
|
161 |
|
162 case ESubtitleGraphicStateClear: |
|
163 { |
|
164 // Clear is due, check to see if the clear is due now |
|
165 TTime timeNow; |
|
166 timeNow.UniversalTime(); |
|
167 TInt diff=iDisplayClearDue.Int64()-timeNow.Int64(); |
|
168 |
|
169 if ( diff > 0 ) |
|
170 { |
|
171 // Clear is not due do a standard bitblt |
|
172 DoBitBlt(aGc, iDirtyRegion); |
|
173 } |
|
174 else |
|
175 { |
|
176 // No further processing required as WSERV clears the region for us |
|
177 iState = ESubtitleGraphicStateWaiting; |
|
178 } |
|
179 } |
|
180 break; |
|
181 |
|
182 default: |
|
183 // Should never happen |
|
184 #ifdef _DEBUG |
|
185 RDebug::Printf("CMMFSubtitleGraphicDrawer::DoDraw() - Invalid State in Drawer should never happen"); |
|
186 User::Invariant(); |
|
187 #endif |
|
188 break; |
|
189 } |
|
190 } |
|
191 |
|
192 /** |
|
193 Renders the current bitmap frame |
|
194 */ |
|
195 void CMMFSubtitleGraphicDrawer::DoBitBlt(MWsGc& aGc, const TRect& aRect) const |
|
196 { |
|
197 MWsGraphicsContext* context = aGc.ObjectInterface<MWsGraphicsContext>(); |
|
198 if(!context) |
|
199 { |
|
200 RDebug::Printf("CMMFSubtitleGraphicDrawer::DoBitBlt can not get MWsGraphicsContext"); |
|
201 return; |
|
202 } |
|
203 context->Push(); |
|
204 |
|
205 switch (iCurrentFrame) |
|
206 { |
|
207 case ESubtitleGraphicFrame1: |
|
208 if (iBitmap1Valid) |
|
209 { |
|
210 context->BitBlt(iSubtitleRegion.iTl + aRect.iTl, *iBitmap1, aRect); |
|
211 } |
|
212 break; |
|
213 |
|
214 case ESubtitleGraphicFrame2: |
|
215 if (iBitmap2Valid) |
|
216 { |
|
217 context->BitBlt(iSubtitleRegion.iTl + aRect.iTl, *iBitmap2, aRect); |
|
218 } |
|
219 break; |
|
220 |
|
221 case ESubtitleGraphicFrame3: |
|
222 if (iTempBitmapValid) |
|
223 { |
|
224 context->BitBlt(iSubtitleRegion.iTl + aRect.iTl, *iTempBitmap, aRect); |
|
225 } |
|
226 break; |
|
227 |
|
228 default: |
|
229 break; |
|
230 } |
|
231 |
|
232 context->Pop(); |
|
233 } |
|
234 |
|
235 /** |
|
236 Process initialization message from client. Readies the CRP for drawing |
|
237 @param aMessage Message data received from client |
|
238 */ |
|
239 void CMMFSubtitleGraphicDrawer::ProcessMessageInit(TSubtitleCrpMsgInit& aMessage) |
|
240 { |
|
241 // Duplicate client bitmap handles |
|
242 // These are verified by the client before they are sent |
|
243 iBitmap1->Reset(); |
|
244 TInt err = iBitmap1->Duplicate(aMessage.iBitmapHandle1); |
|
245 |
|
246 // This should never be a problem but check in debug modes just in case |
|
247 // We dont do this in release mode as it panics the window server... |
|
248 __ASSERT_DEBUG(KErrNone==err, User::Invariant()); |
|
249 |
|
250 iBitmap2->Reset(); |
|
251 err = iBitmap2->Duplicate(aMessage.iBitmapHandle2); |
|
252 // This should never be a problem but check in debug modes just in case |
|
253 // We dont do this in release mode as it panics the window server... |
|
254 __ASSERT_DEBUG(KErrNone==err, User::Invariant()); |
|
255 |
|
256 iCurrentFrame=ESubtitleGraphicFrame1; |
|
257 iBitmap1Valid=ETrue; |
|
258 iBitmap2Valid=ETrue; |
|
259 iTempBitmapValid=EFalse; |
|
260 } |
|
261 |
|
262 /** |
|
263 Process draw frame message from client. Draw the bitmap provided. |
|
264 @param aMessage Message data received from client |
|
265 */ |
|
266 void CMMFSubtitleGraphicDrawer::ProcessMessageDrawFrame(TSubtitleCrpMsgDrawFrame& aMessage) |
|
267 { |
|
268 // Duplicate client bitmap handle |
|
269 iTempBitmap->Reset(); |
|
270 iTempBitmap->Duplicate(aMessage.iBitmapHandle); |
|
271 |
|
272 iOldDirtyRegion=iDirtyRegion; |
|
273 iDirtyRegion=aMessage.iDirtyRegion; |
|
274 |
|
275 iDisplayDuration=aMessage.iDisplayDuration; |
|
276 iCurrentFrame=ESubtitleGraphicFrame3; |
|
277 } |
|
278 |
|
279 /** |
|
280 Process swap frame message from client. Draws the current backbuffer provided. |
|
281 @param aMessage Message data received from client |
|
282 */ |
|
283 void CMMFSubtitleGraphicDrawer::ProcessMessageSwapFrame(TSubtitleCrpMsgRenderSwapFrame& aMessage) |
|
284 { |
|
285 __ASSERT_DEBUG((aMessage.iExpectedFrame==ESubtitleGraphicFrame1)||(aMessage.iExpectedFrame==ESubtitleGraphicFrame2), User::Invariant()); |
|
286 |
|
287 iDisplayDuration = aMessage.iDisplayDuration; |
|
288 iOldDirtyRegion=iDirtyRegion; |
|
289 iDirtyRegion = aMessage.iDirtyRegion; |
|
290 |
|
291 // Swap the frame pointer |
|
292 iCurrentFrame = static_cast<TSubtitleGraphicFrame>(aMessage.iExpectedFrame); |
|
293 } |