Create a scanline decoder without creating a codec

bench/nanobench.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include <ctype.h>
 
 #include "nanobench.h"
@@ skipping 495 matching lines @@
             SkDebugf("Could not create codec for %s.  Skipping bench.\n", path.c_str());
             return false;
         }
 
         // These will be initialized by SkCodec if the color type is kIndex8 and
         // unused otherwise.
         SkPMColor colors[256];
         int colorCount;
         const SkImageInfo info = codec->getInfo().makeColorType(colorType);
         SkAutoTDeleteArray<uint8_t> row(SkNEW_ARRAY(uint8_t, info.minRowBytes()));
-        SkAutoTDelete<SkScanlineDecoder> scanlineDecoder(codec->getScanlineDecoder(info, NULL,
-                colors, &colorCount));
-        if (NULL == scanlineDecoder) {
+        SkAutoTDelete<SkScanlineDecoder> scanlineDecoder(SkScanlineDecoder::NewFromData(encoded));
+        if (NULL == scanlineDecoder || scanlineDecoder->start(info, NULL,
+                colors, &colorCount) != SkCodec::kSuccess)
+        {
             SkDebugf("Could not create scanline decoder for %s with color type %s.  "
                     "Skipping bench.\n", path.c_str(), get_color_name(colorType));
             return false;
         }
         *width = info.width();
         *height = info.height();
     } else {
         SkAutoTDelete<SkImageDecoder> decoder(SkImageDecoder::Factory(stream));
         if (NULL == decoder) {
             SkDebugf("Could not create decoder for %s.  Skipping bench.\n", path.c_str());
@@ skipping 626 matching lines @@
 
     return 0;
 }
 
 #if !defined SK_BUILD_FOR_IOS
 int main(int argc, char** argv) {
     SkCommandLineFlags::Parse(argc, argv);
     return nanobench_main();
 }
 #endif