|
1 // Copyright (c) 1999-2009 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 #include <barsc.h> |
|
17 #include <barsread.h> |
|
18 #include <bautils.h> |
|
19 #include <imageconversion.h> |
|
20 #include "ImageClientMain.h" |
|
21 #include "ImageUtils.h" |
|
22 #include <101F45C7_extra.rsg> |
|
23 #include "icl/ICL_UIDS.hrh" |
|
24 #ifdef SYMBIAN_ENABLE_SPLIT_HEADERS |
|
25 #include <icl/icl_uids_const.hrh> |
|
26 #include <icl/icl_uids_def.hrh> |
|
27 #include <icl/imagecodecdef.h> |
|
28 #endif |
|
29 #include "PNGCodec.h" |
|
30 |
|
31 |
|
32 _LIT(KPNGPanicCategory, "PNGConvertPlugin"); |
|
33 |
|
34 // Global panic function |
|
35 GLDEF_C void Panic(TIclPanic aError) |
|
36 { |
|
37 User::Panic(KPNGPanicCategory, aError); |
|
38 } |
|
39 |
|
40 |
|
41 // Png decoder. |
|
42 CPngDecoder* CPngDecoder::NewL() |
|
43 { |
|
44 return new(ELeave) CPngDecoder; |
|
45 } |
|
46 |
|
47 CPngDecoder::CPngDecoder() |
|
48 {} |
|
49 |
|
50 CPngDecoder::~CPngDecoder() |
|
51 { |
|
52 Cleanup(); |
|
53 } |
|
54 |
|
55 void CPngDecoder::ImageType(TInt aFrameNumber, TUid& aImageType, TUid& aImageSubType) const |
|
56 { |
|
57 __ASSERT_ALWAYS(aFrameNumber == 0, Panic(EFrameNumberOutOfRange)); |
|
58 aImageType = KImageTypePNGUid; |
|
59 aImageSubType = KNullUid; |
|
60 } |
|
61 |
|
62 // Scan header. |
|
63 // Validate that format is correct. |
|
64 // Create codec. |
|
65 // Fill in image info. (All frames) |
|
66 void CPngDecoder::ScanDataL() |
|
67 { |
|
68 ReadFormatL(); |
|
69 |
|
70 ASSERT(ImageReadCodec() == NULL); |
|
71 |
|
72 CPngReadCodec* imageReadCodec; |
|
73 |
|
74 imageReadCodec = CPngReadCodec::NewL(*this); |
|
75 imageReadCodec->SetMissingiENDChunkFail(DecoderOptions() & CImageDecoder::EOptionPngMissingiENDFail); |
|
76 SetImageReadCodec(imageReadCodec); // takes ownership of imageReadCodec |
|
77 |
|
78 ReadFrameHeadersL(); |
|
79 } |
|
80 |
|
81 void CPngDecoder::ReadFormatL() |
|
82 { |
|
83 TPtrC8 bufferDes; |
|
84 |
|
85 ReadDataL(0, bufferDes, KPngFileSignatureLength); |
|
86 |
|
87 // Validate the header. |
|
88 if (bufferDes.Length() < KPngFileSignatureLength) |
|
89 User::Leave(KErrUnderflow); |
|
90 |
|
91 const TUint8* ptr = bufferDes.Ptr(); |
|
92 if (Mem::Compare(ptr, KPngFileSignatureLength, KPngSignature, KPngFileSignatureLength)!=0) |
|
93 User::Leave(KErrCorrupt); |
|
94 |
|
95 // Set start position. |
|
96 SetStartPosition(KPngFileSignatureLength); |
|
97 |
|
98 // Get this from the header? |
|
99 SetDataLength(KMaxTInt); |
|
100 } |
|
101 |
|
102 CFrameInfoStrings* CPngDecoder::FrameInfoStringsL(RFs& aFs, TInt aFrameNumber) |
|
103 { |
|
104 |
|
105 const TUid KPngCodecDllUid = {KPNGCodecDllUidValue}; |
|
106 |
|
107 RResourceFile resourceFile; |
|
108 OpenExtraResourceFileLC(aFs,KPngCodecDllUid,resourceFile); |
|
109 |
|
110 HBufC8* resourceInfo = resourceFile.AllocReadLC(THEDECODERINFO); |
|
111 TResourceReader resourceReader; |
|
112 resourceReader.SetBuffer(resourceInfo); |
|
113 |
|
114 TBuf<KCodecResourceStringMax> info; |
|
115 TBuf<KCodecResourceStringMax> templte; |
|
116 |
|
117 const TFrameInfo& frameInfo = FrameInfo(aFrameNumber); |
|
118 CFrameInfoStrings* frameInfoStrings = CFrameInfoStrings::NewLC(); |
|
119 |
|
120 info = resourceReader.ReadTPtrC(); |
|
121 frameInfoStrings->SetDecoderL(info); |
|
122 |
|
123 info = resourceReader.ReadTPtrC(); |
|
124 frameInfoStrings->SetFormatL(info); |
|
125 |
|
126 TInt width = frameInfo.iOverallSizeInPixels.iWidth; |
|
127 TInt height = frameInfo.iOverallSizeInPixels.iHeight; |
|
128 TInt depth = frameInfo.iBitsPerPixel; |
|
129 |
|
130 templte = resourceReader.ReadTPtrC(); |
|
131 info.Format(templte, width, height); |
|
132 frameInfoStrings->SetDimensionsL(info); |
|
133 |
|
134 CDesCArrayFlat* resourceArray = resourceReader.ReadDesCArrayL(); |
|
135 CleanupStack::PushL(resourceArray); |
|
136 TUint formatIndex = (frameInfo.iFlags & TFrameInfo::EColor) ? 1 : 0; |
|
137 templte = (*resourceArray)[formatIndex]; |
|
138 CleanupStack::PopAndDestroy(resourceArray); |
|
139 info.Format(templte, depth); |
|
140 frameInfoStrings->SetDepthL(info); |
|
141 |
|
142 if(frameInfo.iFlags & TFrameInfo::ETransparencyPossible) |
|
143 { |
|
144 resourceArray = resourceReader.ReadDesCArrayL(); |
|
145 CleanupStack::PushL(resourceArray); |
|
146 formatIndex = (frameInfo.iFlags & TFrameInfo::EAlphaChannel) ? 1 : 0; |
|
147 info = (*resourceArray)[formatIndex]; |
|
148 frameInfoStrings->SetDetailsL(info); |
|
149 CleanupStack::PopAndDestroy(resourceArray); |
|
150 } |
|
151 |
|
152 CleanupStack::Pop(frameInfoStrings); |
|
153 CleanupStack::PopAndDestroy(2); // resourceInfo + resourceFile |
|
154 return frameInfoStrings; |
|
155 } |
|
156 |
|
157 void CPngDecoder::InitConvertL() |
|
158 { |
|
159 iState = EStateStart; // when starting convert, always start from the top |
|
160 CImageDecoderPlugin::InitConvertL(); |
|
161 } |
|
162 |
|
163 void CPngDecoder::NotifyComplete() |
|
164 { |
|
165 iState = EStateStart; // ensure that however we exit one run, start at top of next DoConvert() |
|
166 } |
|
167 |
|
168 void CPngDecoder::DoConvert() |
|
169 { |
|
170 switch (iState) |
|
171 { |
|
172 case EStateStart: |
|
173 { |
|
174 TRAPD(errCode, PrepareForProcessFrameL()); |
|
175 |
|
176 if (errCode!=KErrNone) |
|
177 { |
|
178 RequestComplete(errCode); |
|
179 return; |
|
180 } |
|
181 iState = EStateNormalProcess; |
|
182 } |
|
183 // fall through |
|
184 case EStateNormalProcess: |
|
185 { |
|
186 TFrameState codecState = EFrameIncomplete; |
|
187 |
|
188 TBufPtr8& sourceData = SourceData(); |
|
189 TInt errCode=KErrNone; |
|
190 if (sourceData.Length()!=0) |
|
191 TRAP(errCode, codecState = ImageReadCodec()->ProcessFrameL(sourceData)); |
|
192 |
|
193 ASSERT(iState==EStateNormalProcess || iState==EStateDataProcess); // only valid states |
|
194 if (errCode!=KErrNone || iState==EStateNormalProcess) |
|
195 { |
|
196 HandleProcessFrameResult(errCode, codecState); |
|
197 iState = EStateStart; |
|
198 } |
|
199 else |
|
200 { |
|
201 ASSERT(iState==EStateDataProcess); // kick off a data process |
|
202 SelfComplete(KErrNone); // ask for next run |
|
203 } |
|
204 } |
|
205 break; |
|
206 case EStateDataProcess: |
|
207 { |
|
208 TBool finished = EFalse; |
|
209 CPngReadCodec* readCodec = static_cast<CPngReadCodec*>(ImageReadCodec()); |
|
210 TRAPD(error, finished = readCodec->DoProcessDataL()); |
|
211 if (error!=KErrNone) |
|
212 { |
|
213 ASSERT(error!=KErrUnderflow); // underflow should happen later |
|
214 RequestComplete(error); // will reset state |
|
215 return; |
|
216 } |
|
217 |
|
218 if (finished) |
|
219 { |
|
220 iState = EStateNormalProcess; |
|
221 } |
|
222 SelfComplete(KErrNone); // ask for next run, whatever we do |
|
223 } |
|
224 break; |
|
225 default: |
|
226 ASSERT(EFalse); // should not occur |
|
227 } |
|
228 } |
|
229 |
|
230 // Called from codec when we need to swith to EStateDataProcess |
|
231 void CPngDecoder::GoToProcessDataState() |
|
232 { |
|
233 ASSERT(iState==EStateNormalProcess); // should be in this state if we get here |
|
234 iState = EStateDataProcess; |
|
235 } |
|
236 |
|
237 // PNG encoder |
|
238 CPngEncoder* CPngEncoder::NewL() |
|
239 { |
|
240 return new(ELeave) CPngEncoder; |
|
241 } |
|
242 |
|
243 CPngEncoder::CPngEncoder() |
|
244 { |
|
245 } |
|
246 |
|
247 CPngEncoder::~CPngEncoder() |
|
248 { |
|
249 CImageEncoderPlugin::Cleanup(); |
|
250 } |
|
251 |
|
252 void CPngEncoder::PrepareEncoderL(const CFrameImageData* aFrameImageData) |
|
253 { |
|
254 // Default encode params |
|
255 TInt bpp = 24; |
|
256 TBool color = ETrue; |
|
257 TBool paletted = EFalse; |
|
258 TInt compressionLevel = TPngEncodeData::EDefaultCompression; |
|
259 |
|
260 // Use encode params in aFrameImageData, if present |
|
261 const TInt count = (aFrameImageData) ? aFrameImageData->FrameDataCount() : 0; |
|
262 for (TInt i=0; i < count; i++) |
|
263 { |
|
264 const TFrameDataBlock* encoderData = aFrameImageData->GetFrameData(i); |
|
265 if (encoderData->DataType() == KPNGEncodeDataUid) |
|
266 { |
|
267 const TPngEncodeData* pngEncodeData = static_cast<const TPngEncodeData*>(encoderData); |
|
268 bpp = pngEncodeData->iBitsPerPixel; |
|
269 color = pngEncodeData->iColor; |
|
270 paletted = pngEncodeData->iPaletted; |
|
271 compressionLevel = pngEncodeData->iLevel; |
|
272 } |
|
273 } |
|
274 |
|
275 // Create the codec |
|
276 CPngWriteCodec* codec = CPngWriteCodec::NewL(*this, bpp, color, paletted, compressionLevel); |
|
277 |
|
278 SetImageWriteCodec(codec); // takes ownership of imageReadCodec |
|
279 |
|
280 } |
|
281 |
|
282 void CPngEncoder::InitConvertL() |
|
283 { |
|
284 iState = EStateNormalProcess; // when starting convert, always start from the top |
|
285 CImageEncoderPlugin::InitConvertL(); |
|
286 } |
|
287 |
|
288 void CPngEncoder::NotifyComplete() |
|
289 { |
|
290 iState = EStateNormalProcess; // ensure that however we exit one run, start at top of next DoConvert() |
|
291 } |
|
292 |
|
293 void CPngEncoder::DoConvert() |
|
294 { |
|
295 switch(iState) |
|
296 { |
|
297 case EStateNormalProcess: |
|
298 { |
|
299 TFrameState codecState = EFrameIncomplete; |
|
300 |
|
301 TBufPtr8& destData = DestinationData(); |
|
302 TRAPD(error, codecState = ImageWriteCodec()->ProcessFrameL(destData)); |
|
303 |
|
304 if(error!=KErrNone || iState==EStateNormalProcess) |
|
305 HandleProcessFrameResult(error, codecState); |
|
306 else |
|
307 { |
|
308 ASSERT(iState==EStateDataProcess); // kick off a data process |
|
309 SelfComplete(KErrNone); // ask for next run |
|
310 } |
|
311 } |
|
312 break; |
|
313 |
|
314 case EStateDataProcess: |
|
315 { |
|
316 TBool finished = EFalse; |
|
317 CPngWriteCodec* writeCodec = static_cast<CPngWriteCodec*>(ImageWriteCodec()); |
|
318 |
|
319 TRAPD(error, finished = writeCodec->DeflateEncodedDataL()); |
|
320 |
|
321 if(error!=KErrNone) |
|
322 { |
|
323 RequestComplete(error); // will reset state |
|
324 return; |
|
325 } |
|
326 |
|
327 if(finished) |
|
328 iState = EStateNormalProcess; |
|
329 |
|
330 SelfComplete(KErrNone); // ask for next run, whatever we do |
|
331 } |
|
332 break; |
|
333 |
|
334 default: |
|
335 ASSERT(EFalse); // invalid state |
|
336 } |
|
337 } |
|
338 |
|
339 void CPngEncoder::UpdateHeaderL() |
|
340 { |
|
341 } |
|
342 |
|
343 void CPngEncoder::GoToProcessDataState() |
|
344 { |
|
345 iState = EStateDataProcess; |
|
346 } |
|
347 |