Add SkEncodedInfo to report properties of encoded image data

include/codec/SkCodec.h

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkCodec_DEFINED
 #define SkCodec_DEFINED
 
 #include "../private/SkTemplates.h"
 #include "SkColor.h"
 #include "SkEncodedFormat.h"
+#include "SkEncodedInfo.h"
 #include "SkImageInfo.h"
 #include "SkSize.h"
 #include "SkStream.h"
 #include "SkTypes.h"
 #include "SkYUVSizeInfo.h"
 
 class SkColorSpace;
 class SkData;
 class SkPngChunkReader;
 class SkSampler;
@@ skipping 69 matching lines @@
      */
     static SkCodec* NewFromData(SkData*, SkPngChunkReader* = NULL);
 
     virtual ~SkCodec();
 
     /**
      *  Return the ImageInfo associated with this codec.
      */
     const SkImageInfo& getInfo() const { return fSrcInfo; }
 
+    const SkEncodedInfo& getEncodedInfo() const { return fEncodedInfo; }
+
     /**
      *  Returns the color space associated with the codec.
      *  Does not affect ownership.
      *  Might be NULL.
      */
     SkColorSpace* getColorSpace() const { return fColorSpace.get(); }
 
     enum Origin {
         kTopLeft_Origin     = 1, // Default
         kTopRight_Origin    = 2, // Reflected across y-axis
@@ skipping 391 matching lines @@
      *
      *  This will equal inputScanline, except in the case of strangely
      *  encoded image types (bottom-up bmps, interlaced gifs).
      */
     int outputScanline(int inputScanline) const;
 
 protected:
     /**
      *  Takes ownership of SkStream*
      */
-    SkCodec(const SkImageInfo&,
+    SkCodec(const SkEncodedInfo&,
             SkStream*,
             sk_sp<SkColorSpace> = nullptr,
             Origin = kTopLeft_Origin);
 
     virtual SkISize onGetScaledDimensions(float /*desiredScale*/) const {
         // By default, scaling is not supported.
         return this->getInfo().dimensions();
     }
 
     // FIXME: What to do about subsets??
@@ skipping 110 matching lines @@
      *  Returns the number of scanlines that have been decoded so far.
      *  This is unaffected by the SkScanlineOrder.
      *
      *  Returns -1 if we have not started a scanline decode.
      */
     int currScanline() const { return fCurrScanline; }
 
     virtual int onOutputScanline(int inputScanline) const;
 
 private:
+    const SkEncodedInfo         fEncodedInfo;
     const SkImageInfo           fSrcInfo;
     SkAutoTDelete<SkStream>     fStream;
     bool                        fNeedsRewind;
     sk_sp<SkColorSpace>         fColorSpace;
     const Origin                fOrigin;
 
     // These fields are only meaningful during scanline decodes.
     SkImageInfo                 fDstInfo;
     SkCodec::Options            fOptions;
     int                         fCurrScanline;
@@ skipping 45 matching lines @@
      *  not affect ownership.
      *
      *  Only valid during scanline decoding.
      */
     virtual SkSampler* getSampler(bool /*createIfNecessary*/) { return nullptr; }
 
     friend class SkSampledCodec;
     friend class SkIcoCodec;
 };
 #endif // SkCodec_DEFINED