Cr2Decoder::decodeRawInternal(): don't stack-allocate LJpegPlain

Was taking ~27Kb

RawSpeed/Cr2Decoder.cpp

@@ -75,13 +75,15 @@ RawImage Cr2Decoder::decodeRawInternal() {
     }
 
     mRaw->createData();
-    LJpegPlain l(mFile, mRaw);
+    LJpegPlain *l = new LJpegPlain(mFile, mRaw);
     try {
-      l.startDecoder(off, mFile->getSize()-off, 0, 0);
+      l->startDecoder(off, mFile->getSize()-off, 0, 0);
     } catch (IOException& e) {
       mRaw->setError(e.what());
     }
 
+    delete l;
+
     if(hints.find("double_line_ljpeg") != hints.end()) {
       // We now have a double width half height image we need to convert to the
       // normal format
@@ -144,8 +146,9 @@ RawImage Cr2Decoder::decodeRawInternal() {
       slice.offset = offsets[0].getInt();
       slice.count = counts[0].getInt();
       SOFInfo sof;
-      LJpegPlain l(mFile, mRaw);
-      l.getSOF(&sof, slice.offset, slice.count);
+      LJpegPlain *l = new LJpegPlain(mFile, mRaw);
+      l->getSOF(&sof, slice.offset, slice.count);
+      delete l;
       slice.w = sof.w * sof.cps;
       slice.h = sof.h;
       if (sof.cps == 4 && slice.w > slice.h * 4) {
@@ -212,12 +215,13 @@ RawImage Cr2Decoder::decodeRawInternal() {
   for (uint32 i = 0; i < slices.size(); i++) {
     Cr2Slice slice = slices[i];
     try {
-      LJpegPlain l(mFile, mRaw);
-      l.addSlices(s_width);
-      l.mUseBigtable = true;
-      l.mCanonFlipDim = flipDims;
-      l.mCanonDoubleHeight = doubleHeight;
-      l.startDecoder(slice.offset, slice.count, 0, offY);
+      LJpegPlain *l = new LJpegPlain(mFile, mRaw);
+      l->addSlices(s_width);
+      l->mUseBigtable = true;
+      l->mCanonFlipDim = flipDims;
+      l->mCanonDoubleHeight = doubleHeight;
+      l->startDecoder(slice.offset, slice.count, 0, offY);
+      delete l;
     } catch (RawDecoderException &e) {
       if (i == 0)
         throw;