Remove size check from SkCodec

src/codec/SkCodec.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkBmpCodec.h"
 #include "SkCodec.h"
 #include "SkCodec_libpng.h"
@@ skipping 58 matching lines @@
         // It is possible the stream does not support peeking, but does support
         // rewinding.
         // Attempt to read() and pass the actual amount read to the decoder.
         bytesRead = stream->read(buffer, bytesToRead);
         if (!stream->rewind()) {
             SkCodecPrintf("Encoded image data could not peek or rewind to determine format!\n");
             return nullptr;
         }
     }
 
-    SkAutoTDelete<SkCodec> codec(nullptr);
     // PNG is special, since we want to be able to supply an SkPngChunkReader.
     // But this code follows the same pattern as the loop.
     if (SkPngCodec::IsPng(buffer, bytesRead)) {
-        codec.reset(SkPngCodec::NewFromStream(streamDeleter.detach(), chunkReader));
+        return SkPngCodec::NewFromStream(streamDeleter.detach(), chunkReader);
     } else {
         for (DecoderProc proc : gDecoderProcs) {
             if (proc.IsFormat(buffer, bytesRead)) {
-                codec.reset(proc.NewFromStream(streamDeleter.detach()));
-                break;
+                return proc.NewFromStream(streamDeleter.detach());
             }
         }
     }
 
-    // Set the max size at 128 megapixels (512 MB for kN32).
-    // This is about 4x smaller than a test image that takes a few minutes for
-    // dm to decode and draw.
-    const int32_t maxSize = 1 << 27;
-    if (codec && codec->getInfo().width() * codec->getInfo().height() > maxSize) {
-        SkCodecPrintf("Error: Image size too large, cannot decode.\n");
-        return nullptr;
-    } else {
-        return codec.detach();
-    }
+    return nullptr;
 }
 
 SkCodec* SkCodec::NewFromData(SkData* data, SkPngChunkReader* reader) {
     if (!data) {
         return nullptr;
     }
     return NewFromStream(new SkMemoryStream(data), reader);
 }
 
 SkCodec::SkCodec(const SkImageInfo& info, SkStream* stream)
@@ skipping 264 matching lines @@
             SkASSERT(1 == linesRequested || this->getInfo().height() == linesRequested);
             const SkImageInfo fillInfo = info.makeWH(info.width(), 1);
             for (int srcY = linesDecoded; srcY < linesRequested; srcY++) {
                 fillDst = SkTAddOffset<void>(dst, this->outputScanline(srcY) * rowBytes);
                 fill_proc(fillInfo, fillDst, rowBytes, fillValue, zeroInit, sampler);
             }
             break;
         }
     }
 }