Add SkEncodedInfo to report properties of encoded image data

All this does is build an SkEncodedInfo for each codec, and
then convert it to an SkImageInfo.

In future steps I intend to:
(1) Use SkEncodedInfo in place of SrcConfig in SkSwizzler.
(2) Support more conversions in SkSwizzler (non-native
BGRA/RGBA, 16-bit components, float, fixed point)
(3) Investigate optimizing conversions from encoded data
to linear color spaces.

BUG=skia:4133
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1820073002

Review URL: https://codereview.chromium.org/1820073002

26 files changed, 434 insertions, 166 deletions

diff --git a/include/codec/SkCodec.h b/include/codec/SkCodec.h
index 629274d21c..50875e46c4 100644
--- a/include/codec/SkCodec.h
+++ b/include/codec/SkCodec.h
@@ -11,6 +11,7 @@
 #include "../private/SkTemplates.h"
 #include "SkColor.h"
 #include "SkEncodedFormat.h"
+#include "SkEncodedInfo.h"
 #include "SkImageInfo.h"
 #include "SkSize.h"
 #include "SkStream.h"
@@ -100,6 +101,8 @@ public:
      */
     const SkImageInfo& getInfo() const { return fSrcInfo; }
 
+    const SkEncodedInfo& getEncodedInfo() const { return fEncodedInfo; }
+
     /**
      *  Returns the color space associated with the codec.
      *  Does not affect ownership.
@@ -511,7 +514,9 @@ protected:
     /**
      *  Takes ownership of SkStream*
      */
-    SkCodec(const SkImageInfo&,
+    SkCodec(int width,
+            int height,
+            const SkEncodedInfo&,
             SkStream*,
             sk_sp<SkColorSpace> = nullptr,
             Origin = kTopLeft_Origin);
@@ -642,6 +647,7 @@ protected:
     virtual int onOutputScanline(int inputScanline) const;
 
 private:
+    const SkEncodedInfo         fEncodedInfo;
     const SkImageInfo           fSrcInfo;
     SkAutoTDelete<SkStream>     fStream;
     bool                        fNeedsRewind;
diff --git a/include/codec/SkEncodedInfo.h b/include/codec/SkEncodedInfo.h
new file mode 100644
index 0000000000..f91660529e
--- /dev/null
+++ b/include/codec/SkEncodedInfo.h
@@ -0,0 +1,178 @@
+/*
+ * Copyright 2016 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef SkEncodedInfo_DEFINED
+#define SkEncodedInfo_DEFINED
+
+#include "SkImageInfo.h"
+
+struct SkEncodedInfo {
+public:
+
+    enum Alpha {
+        kOpaque_Alpha,
+        kUnpremul_Alpha,
+
+        // Each pixel is either fully opaque or fully transparent.
+        // There is no difference between requesting kPremul or kUnpremul.
+        kBinary_Alpha,
+
+        // Allows us to have a default constructor.  Should be treated as
+        // invalid.
+        kUnknown_Alpha,
+    };
+
+    /*
+     * We strive to make the number of components per pixel obvious through
+     * our naming conventions.
+     * Ex: kRGB has 3 components.  kRGBA has 4 components.
+     *
+     * This sometimes results in redundant Alpha and Color information.
+     * Ex: kRGB images must also be kOpaque.
+     */
+    enum Color {
+        // PNG, WBMP
+        kGray_Color,
+
+        // PNG
+        kGrayAlpha_Color,
+
+        // PNG, GIF, BMP
+        kPalette_Color,
+
+        // PNG, RAW
+        kRGB_Color,
+        kRGBA_Color,
+
+        // BMP
+        kBGR_Color,
+        kBGRX_Color,
+        kBGRA_Color,
+
+        // JPEG, WEBP
+        kYUV_Color,
+
+        // WEBP
+        kYUVA_Color,
+
+        // JPEG
+        // Photoshop actually writes inverted CMYK data into JPEGs, where zero
+        // represents 100% ink coverage.  For this reason, we treat CMYK JPEGs
+        // as having inverted CMYK.  libjpeg-turbo warns that this may break
+        // other applications, but the CMYK JPEGs we see on the web expect to
+        // be treated as inverted CMYK.
+        kInvertedCMYK_Color,
+        kYCCK_Color,
+
+        // Allows us to have a default constructor.  Should be treated as
+        // invalid.
+        kUnknown_Color,
+    };
+
+    static SkEncodedInfo Make(Color color, Alpha alpha, int bitsPerComponent) {
+        SkASSERT(1 == bitsPerComponent ||
+                 2 == bitsPerComponent ||
+                 4 == bitsPerComponent ||
+                 8 == bitsPerComponent ||
+                 16 == bitsPerComponent);
+
+        switch (color) {
+            case kGray_Color:
+                SkASSERT(kOpaque_Alpha == alpha);
+                break;
+            case kGrayAlpha_Color:
+                SkASSERT(kOpaque_Alpha != alpha);
+                break;
+            case kPalette_Color:
+                SkASSERT(16 != bitsPerComponent);
+                break;
+            case kRGB_Color:
+            case kBGR_Color:
+            case kBGRX_Color:
+                SkASSERT(kOpaque_Alpha == alpha);
+                SkASSERT(bitsPerComponent >= 8);
+                break;
+            case kYUV_Color:
+            case kInvertedCMYK_Color:
+            case kYCCK_Color:
+                SkASSERT(kOpaque_Alpha == alpha);
+                SkASSERT(8 == bitsPerComponent);
+                break;
+            case kRGBA_Color:
+                SkASSERT(kOpaque_Alpha != alpha);
+                SkASSERT(bitsPerComponent >= 8);
+                break;
+            case kBGRA_Color:
+            case kYUVA_Color:
+                SkASSERT(kOpaque_Alpha != alpha);
+                SkASSERT(8 == bitsPerComponent);
+                break;
+            default:
+                SkASSERT(false);
+                break;
+        }
+
+        return SkEncodedInfo(color, alpha, bitsPerComponent);
+    }
+
+    /*
+     * Returns an SkImageInfo with Skia color and alpha types that are the
+     * closest possible match to the encoded info.
+     */
+    SkImageInfo makeImageInfo(int width, int height) const {
+        switch (fColor) {
+            case kGray_Color:
+                SkASSERT(kOpaque_Alpha == fAlpha);
+                return SkImageInfo::Make(width, height, kGray_8_SkColorType, kOpaque_SkAlphaType);
+            case kGrayAlpha_Color:
+                SkASSERT(kOpaque_Alpha != fAlpha);
+                return SkImageInfo::Make(width, height, kN32_SkColorType,
+                        kUnpremul_SkAlphaType);
+            case kPalette_Color: {
+                SkAlphaType alphaType = (kOpaque_Alpha == fAlpha) ? kOpaque_SkAlphaType :
+                        kUnpremul_SkAlphaType;
+                return SkImageInfo::Make(width, height, kIndex_8_SkColorType, alphaType);
+            }
+            case kRGB_Color:
+            case kBGR_Color:
+            case kBGRX_Color:
+            case kYUV_Color:
+            case kInvertedCMYK_Color:
+            case kYCCK_Color:
+                SkASSERT(kOpaque_Alpha == fAlpha);
+                return SkImageInfo::Make(width, height, kN32_SkColorType, kOpaque_SkAlphaType);
+            case kRGBA_Color:
+            case kBGRA_Color:
+            case kYUVA_Color:
+                SkASSERT(kOpaque_Alpha != fAlpha);
+                return SkImageInfo::Make(width, height, kN32_SkColorType, kUnpremul_SkAlphaType);
+            default:
+                SkASSERT(false);
+                return SkImageInfo::MakeUnknown();
+        }
+    }
+
+    SkEncodedInfo()
+        : fColor(kUnknown_Color)
+        , fAlpha(kUnknown_Alpha)
+        , fBitsPerComponent(0)
+    {}
+
+private:
+
+    SkEncodedInfo(Color color, Alpha alpha, uint8_t bitsPerComponent)
+        : fColor(color)
+        , fAlpha(alpha)
+        , fBitsPerComponent(bitsPerComponent)
+    {}
+
+    Color   fColor;
+    Alpha   fAlpha;
+    uint8_t fBitsPerComponent;
+};
+
+#endif
diff --git a/src/codec/SkBmpCodec.cpp b/src/codec/SkBmpCodec.cpp
index ad6f0ddc4d..680436ab91 100644
--- a/src/codec/SkBmpCodec.cpp
+++ b/src/codec/SkBmpCodec.cpp
@@ -415,33 +415,47 @@ bool SkBmpCodec::ReadHeader(SkStream* stream, bool inIco, SkCodec** codecOut) {
 
     switch (inputFormat) {
         case kStandard_BmpInputFormat: {
-            // BMPs-in-ICOs often contain an alpha mask after the image, which
-            // means we cannot guarantee that an image is opaque, even if the
-            // embedded bmp is opaque.
-            // We use |isOpaque| to indicate if the BMP itself is opaque, but
-            // still need to recommend kUnpremul when it is contained in an ICO.
-            SkColorType colorType = kN32_SkColorType;
-            SkAlphaType alphaType = inIco ? kUnpremul_SkAlphaType : kOpaque_SkAlphaType;
+            // BMPs are generally opaque, however BMPs-in-ICOs may contain
+            // a transparency mask after the image.  Therefore, we mark the
+            // alpha as kBinary if the BMP is contained in an ICO.
+            // We use |isOpaque| to indicate if the BMP itself is opaque.
+            SkEncodedInfo::Alpha alpha = inIco ? SkEncodedInfo::kBinary_Alpha :
+                    SkEncodedInfo::kOpaque_Alpha;
             bool isOpaque = true;
+
+            SkEncodedInfo::Color color;
+            uint8_t bitsPerComponent;
             switch (bitsPerPixel) {
                 // Palette formats
                 case 1:
                 case 2:
                 case 4:
                 case 8:
-                    // We cannot recommend a palette color type for ICOs because they
-                    // may contain a transparency mask.
-                    if (!inIco) {
-                        colorType = kIndex_8_SkColorType;
+                    // In the case of ICO, kBGRA is actually the closest match,
+                    // since we will need to apply a transparency mask.
+                    if (inIco) {
+                        color = SkEncodedInfo::kBGRA_Color;
+                        bitsPerComponent = 8;
+                    } else {
+                        color = SkEncodedInfo::kPalette_Color;
+                        bitsPerComponent = (uint8_t) bitsPerPixel;
                     }
                     break;
                 case 24:
+                    color = SkEncodedInfo::kBGR_Color;
+                    bitsPerComponent = 8;
+                    break;
                 case 32:
                     // 32-bit BMP-in-ICOs actually use the alpha channel in place of a
                     // transparency mask.
                     if (inIco) {
                         isOpaque = false;
+                        alpha = SkEncodedInfo::kUnpremul_Alpha;
+                        color = SkEncodedInfo::kBGRA_Color;
+                    } else {
+                        color = SkEncodedInfo::kBGRX_Color;
                     }
+                    bitsPerComponent = 8;
                     break;
                 default:
                     SkCodecPrintf("Error: invalid input value for bits per pixel.\n");
@@ -453,11 +467,9 @@ bool SkBmpCodec::ReadHeader(SkStream* stream, bool inIco, SkCodec** codecOut) {
                 SkASSERT(!inIco || nullptr != stream->getMemoryBase());
 
                 // Set the image info and create a codec.
-                const SkImageInfo imageInfo = SkImageInfo::Make(width, height, colorType,
-                        alphaType);
-                *codecOut = new SkBmpStandardCodec(imageInfo, stream, bitsPerPixel, numColors,
-                        bytesPerColor, offset - bytesRead, rowOrder, isOpaque, inIco);
-
+                const SkEncodedInfo info = SkEncodedInfo::Make(color, alpha, bitsPerComponent);
+                *codecOut = new SkBmpStandardCodec(width, height, info, stream, bitsPerPixel,
+                        numColors, bytesPerColor, offset - bytesRead, rowOrder, isOpaque, inIco);
             }
             return true;
         }
@@ -495,13 +507,22 @@ bool SkBmpCodec::ReadHeader(SkStream* stream, bool inIco, SkCodec** codecOut) {
                     return false;
                 }
 
-                // Set the image info
-                SkAlphaType alphaType = masks->getAlphaMask() ? kUnpremul_SkAlphaType :
-                        kOpaque_SkAlphaType;
-                const SkImageInfo imageInfo = SkImageInfo::Make(width, height, kN32_SkColorType,
-                        alphaType);
-                *codecOut = new SkBmpMaskCodec(imageInfo, stream, bitsPerPixel, masks.release(),
-                        rowOrder);
+                // Masked bmps are not a great fit for SkEncodedInfo, since they have
+                // arbitrary component orderings and bits per component.  Here we choose
+                // somewhat reasonable values - it's ok that we don't match exactly
+                // because SkBmpMaskCodec has its own mask swizzler anyway.
+                SkEncodedInfo::Color color;
+                SkEncodedInfo::Alpha alpha;
+                if (masks->getAlphaMask()) {
+                    color = SkEncodedInfo::kBGRA_Color;
+                    alpha = SkEncodedInfo::kUnpremul_Alpha;
+                } else {
+                    color = SkEncodedInfo::kBGR_Color;
+                    alpha = SkEncodedInfo::kOpaque_Alpha;
+                }
+                const SkEncodedInfo info = SkEncodedInfo::Make(color, alpha, 8);
+                *codecOut = new SkBmpMaskCodec(width, height, info, stream, bitsPerPixel,
+                        masks.release(), rowOrder);
             }
             return true;
         }
@@ -526,10 +547,11 @@ bool SkBmpCodec::ReadHeader(SkStream* stream, bool inIco, SkCodec** codecOut) {
             if (codecOut) {
                 // RLE inputs may skip pixels, leaving them as transparent.  This
                 // is uncommon, but we cannot be certain that an RLE bmp will be
-                // opaque.
-                const SkImageInfo imageInfo = SkImageInfo::Make(width, height, kN32_SkColorType,
-                        kUnpremul_SkAlphaType);
-                *codecOut = new SkBmpRLECodec(imageInfo, stream, bitsPerPixel, numColors,
+                // opaque or that we will be able to represent it with a palette.
+                // For that reason, we always indicate that we are kBGRA.
+                const SkEncodedInfo info = SkEncodedInfo::Make(SkEncodedInfo::kBGRA_Color,
+                        SkEncodedInfo::kBinary_Alpha, 8);
+                *codecOut = new SkBmpRLECodec(width, height, info, stream, bitsPerPixel, numColors,
                         bytesPerColor, offset - bytesRead, rowOrder, RLEBytes);
             }
             return true;
@@ -557,12 +579,12 @@ SkCodec* SkBmpCodec::NewFromStream(SkStream* stream, bool inIco) {
     return nullptr;
 }
 
-SkBmpCodec::SkBmpCodec(const SkImageInfo& info, SkStream* stream,
+SkBmpCodec::SkBmpCodec(int width, int height, const SkEncodedInfo& info, SkStream* stream,
         uint16_t bitsPerPixel, SkCodec::SkScanlineOrder rowOrder)
-    : INHERITED(info, stream)
+    : INHERITED(width, height, info, stream)
     , fBitsPerPixel(bitsPerPixel)
     , fRowOrder(rowOrder)
-    , fSrcRowBytes(SkAlign4(compute_row_bytes(info.width(), fBitsPerPixel)))
+    , fSrcRowBytes(SkAlign4(compute_row_bytes(width, fBitsPerPixel)))
 {}
 
 bool SkBmpCodec::onRewind() {
diff --git a/src/codec/SkBmpCodec.h b/src/codec/SkBmpCodec.h
index a7e8e58431..0ece7ad6ce 100644
--- a/src/codec/SkBmpCodec.h
+++ b/src/codec/SkBmpCodec.h
@@ -38,8 +38,8 @@ public:
 
 protected:
 
-    SkBmpCodec(const SkImageInfo& info, SkStream* stream, uint16_t bitsPerPixel,
-            SkCodec::SkScanlineOrder rowOrder);
+    SkBmpCodec(int width, int height, const SkEncodedInfo& info, SkStream* stream,
+            uint16_t bitsPerPixel, SkCodec::SkScanlineOrder rowOrder);
 
     SkEncodedFormat onGetEncodedFormat() const override { return kBMP_SkEncodedFormat; }
 
diff --git a/src/codec/SkBmpMaskCodec.cpp b/src/codec/SkBmpMaskCodec.cpp
index 21d231b15f..7d2d398bb4 100644
--- a/src/codec/SkBmpMaskCodec.cpp
+++ b/src/codec/SkBmpMaskCodec.cpp
@@ -12,10 +12,10 @@
 /*
  * Creates an instance of the decoder
  */
-SkBmpMaskCodec::SkBmpMaskCodec(const SkImageInfo& info, SkStream* stream,
+SkBmpMaskCodec::SkBmpMaskCodec(int width, int height, const SkEncodedInfo& info, SkStream* stream,
                                uint16_t bitsPerPixel, SkMasks* masks,
                                SkCodec::SkScanlineOrder rowOrder)
-    : INHERITED(info, stream, bitsPerPixel, rowOrder)
+    : INHERITED(width, height, info, stream, bitsPerPixel, rowOrder)
     , fMasks(masks)
     , fMaskSwizzler(nullptr)
     , fSrcBuffer(new uint8_t [this->srcRowBytes()])
diff --git a/src/codec/SkBmpMaskCodec.h b/src/codec/SkBmpMaskCodec.h
index 93b3bca5a0..cc8af856e8 100644
--- a/src/codec/SkBmpMaskCodec.h
+++ b/src/codec/SkBmpMaskCodec.h
@@ -22,13 +22,13 @@ public:
      * Called only by SkBmpCodec::NewFromStream
      * There should be no other callers despite this being public
      *
-     * @param srcInfo contains the source width and height
+     * @param info contains properties of the encoded data
      * @param stream the stream of encoded image data
      * @param bitsPerPixel the number of bits used to store each pixel
      * @param masks color masks for certain bmp formats
      * @param rowOrder indicates whether rows are ordered top-down or bottom-up
      */
-    SkBmpMaskCodec(const SkImageInfo& srcInfo, SkStream* stream,
+    SkBmpMaskCodec(int width, int height, const SkEncodedInfo& info, SkStream* stream,
             uint16_t bitsPerPixel, SkMasks* masks,
             SkCodec::SkScanlineOrder rowOrder);
 
diff --git a/src/codec/SkBmpRLECodec.cpp b/src/codec/SkBmpRLECodec.cpp
index 793bbfd260..d80dd1a18a 100644
--- a/src/codec/SkBmpRLECodec.cpp
+++ b/src/codec/SkBmpRLECodec.cpp
@@ -14,12 +14,12 @@
  * Creates an instance of the decoder
  * Called only by NewFromStream
  */
-SkBmpRLECodec::SkBmpRLECodec(const SkImageInfo& info, SkStream* stream,
+SkBmpRLECodec::SkBmpRLECodec(int width, int height, const SkEncodedInfo& info, SkStream* stream,
                              uint16_t bitsPerPixel, uint32_t numColors,
                              uint32_t bytesPerColor, uint32_t offset,
                              SkCodec::SkScanlineOrder rowOrder,
                              size_t RLEBytes)
-    : INHERITED(info, stream, bitsPerPixel, rowOrder)
+    : INHERITED(width, height, info, stream, bitsPerPixel, rowOrder)
     , fColorTable(nullptr)
     , fNumColors(numColors)
     , fBytesPerColor(bytesPerColor)
diff --git a/src/codec/SkBmpRLECodec.h b/src/codec/SkBmpRLECodec.h
index 2ddf8d8b90..e0afccd927 100644
--- a/src/codec/SkBmpRLECodec.h
+++ b/src/codec/SkBmpRLECodec.h
@@ -23,7 +23,7 @@ public:
      * Called only by SkBmpCodec::NewFromStream
      * There should be no other callers despite this being public
      *
-     * @param srcInfo contains the source width and height
+     * @param info contains properties of the encoded data
      * @param stream the stream of encoded image data
      * @param bitsPerPixel the number of bits used to store each pixel
      * @param numColors the number of colors in the color table
@@ -35,7 +35,7 @@ public:
      * @param RLEBytes indicates the amount of data left in the stream
      *                 after decoding the headers
      */
-    SkBmpRLECodec(const SkImageInfo& srcInfo, SkStream* stream,
+    SkBmpRLECodec(int width, int height, const SkEncodedInfo& info, SkStream* stream,
             uint16_t bitsPerPixel, uint32_t numColors, uint32_t bytesPerColor,
             uint32_t offset, SkCodec::SkScanlineOrder rowOrder,
             size_t RLEBytes);
diff --git a/src/codec/SkBmpStandardCodec.cpp b/src/codec/SkBmpStandardCodec.cpp
index 80a989ae4d..a509c75b6d 100644
--- a/src/codec/SkBmpStandardCodec.cpp
+++ b/src/codec/SkBmpStandardCodec.cpp
@@ -14,12 +14,12 @@
  * Creates an instance of the decoder
  * Called only by NewFromStream
  */
-SkBmpStandardCodec::SkBmpStandardCodec(const SkImageInfo& info, SkStream* stream,
-                                       uint16_t bitsPerPixel, uint32_t numColors,
+SkBmpStandardCodec::SkBmpStandardCodec(int width, int height, const SkEncodedInfo& info,
+                                       SkStream* stream, uint16_t bitsPerPixel, uint32_t numColors,
                                        uint32_t bytesPerColor, uint32_t offset,
                                        SkCodec::SkScanlineOrder rowOrder,
                                        bool isOpaque, bool inIco)
-    : INHERITED(info, stream, bitsPerPixel, rowOrder)
+    : INHERITED(width, height, info, stream, bitsPerPixel, rowOrder)
     , fColorTable(nullptr)
     , fNumColors(numColors)
     , fBytesPerColor(bytesPerColor)
diff --git a/src/codec/SkBmpStandardCodec.h b/src/codec/SkBmpStandardCodec.h
index 557f6535c9..b2b53df6c8 100644
--- a/src/codec/SkBmpStandardCodec.h
+++ b/src/codec/SkBmpStandardCodec.h
@@ -24,7 +24,7 @@ public:
      * Called only by SkBmpCodec::NewFromStream
      * There should be no other callers despite this being public
      *
-     * @param srcInfo contains the source width and height
+     * @param info contains properties of the encoded data
      * @param stream the stream of encoded image data
      * @param bitsPerPixel the number of bits used to store each pixel
      * @param numColors the number of colors in the color table
@@ -37,7 +37,7 @@ public:
      *                 the icp mask, if there is one)
      * @param inIco    indicates if the bmp is embedded in an ico file
      */
-    SkBmpStandardCodec(const SkImageInfo& srcInfo, SkStream* stream,
+    SkBmpStandardCodec(int width, int height, const SkEncodedInfo& info, SkStream* stream,
             uint16_t bitsPerPixel, uint32_t numColors, uint32_t bytesPerColor,
             uint32_t offset, SkCodec::SkScanlineOrder rowOrder, bool isOpaque,
             bool inIco);
diff --git a/src/codec/SkCodec.cpp b/src/codec/SkCodec.cpp
index 7bc831a6ac..8468f8a099 100644
--- a/src/codec/SkCodec.cpp
+++ b/src/codec/SkCodec.cpp
@@ -114,9 +114,10 @@ SkCodec* SkCodec::NewFromData(SkData* data, SkPngChunkReader* reader) {
     return NewFromStream(new SkMemoryStream(data), reader);
 }
 
-SkCodec::SkCodec(const SkImageInfo& info, SkStream* stream, sk_sp<SkColorSpace> colorSpace,
-        Origin origin)
-    : fSrcInfo(info)
+SkCodec::SkCodec(int width, int height, const SkEncodedInfo& info, SkStream* stream,
+        sk_sp<SkColorSpace> colorSpace, Origin origin)
+    : fEncodedInfo(info)
+    , fSrcInfo(info.makeImageInfo(width, height))
     , fStream(stream)
     , fNeedsRewind(false)
     , fColorSpace(colorSpace)
diff --git a/src/codec/SkGifCodec.cpp b/src/codec/SkGifCodec.cpp
index 2233c66c19..cdd9d088f1 100644
--- a/src/codec/SkGifCodec.cpp
+++ b/src/codec/SkGifCodec.cpp
@@ -199,25 +199,23 @@ bool SkGifCodec::ReadHeader(SkStream* stream, SkCodec** codecOut, GifFileType**
         }
         bool frameIsSubset = (size != frameRect.size());
 
-        // Determine the recommended alpha type.  The transIndex might be valid if it less
+        // Determine the encoded alpha type.  The transIndex might be valid if it less
         // than 256.  We are not certain that the index is valid until we process the color
         // table, since some gifs have color tables with less than 256 colors.  If
         // there might be a valid transparent index, we must indicate that the image has
         // alpha.
-        // In the case where we must support alpha, we have the option to set the
-        // suggested alpha type to kPremul or kUnpremul.  Both are valid since the alpha
-        // component will always be 0xFF or the entire 32-bit pixel will be set to zero.
-        // We prefer kPremul because we support kPremul, and it is more efficient to use
-        // kPremul directly even when kUnpremul is supported.
-        SkAlphaType alphaType = (transIndex < 256) ? kPremul_SkAlphaType : kOpaque_SkAlphaType;
+        // In the case where we must support alpha, we indicate kBinary, since every
+        // pixel will either be fully opaque or fully transparent.
+        SkEncodedInfo::Alpha alpha = (transIndex < 256) ? SkEncodedInfo::kBinary_Alpha :
+                SkEncodedInfo::kOpaque_Alpha;
 
         // Return the codec
-        // kIndex is the most natural color type for gifs, so we set this as
-        // the default.
-        SkImageInfo imageInfo = SkImageInfo::Make(size.width(), size.height(), kIndex_8_SkColorType,
-                alphaType);
-        *codecOut = new SkGifCodec(imageInfo, streamDeleter.release(), gif.release(), transIndex,
-                frameRect, frameIsSubset);
+        // Use kPalette since Gifs are encoded with a color table.
+        // Use 8-bits per component, since this is the output we get from giflib.
+        // FIXME: Gifs can actually be encoded with 4-bits per pixel.  Can we support this?
+        SkEncodedInfo info = SkEncodedInfo::Make(SkEncodedInfo::kPalette_Color, alpha, 8);
+        *codecOut = new SkGifCodec(size.width(), size.height(), info, streamDeleter.release(),
+                gif.release(), transIndex, frameRect, frameIsSubset);
     } else {
         SkASSERT(nullptr != gifOut);
         streamDeleter.release();
@@ -239,9 +237,9 @@ SkCodec* SkGifCodec::NewFromStream(SkStream* stream) {
     return nullptr;
 }
 
-SkGifCodec::SkGifCodec(const SkImageInfo& srcInfo, SkStream* stream, GifFileType* gif,
-        uint32_t transIndex, const SkIRect& frameRect, bool frameIsSubset)
-    : INHERITED(srcInfo, stream)
+SkGifCodec::SkGifCodec(int width, int height, const SkEncodedInfo& info, SkStream* stream,
+        GifFileType* gif, uint32_t transIndex, const SkIRect& frameRect, bool frameIsSubset)
+    : INHERITED(width, height, info, stream)
     , fGif(gif)
     , fSrcBuffer(new uint8_t[this->getInfo().width()])
     , fFrameRect(frameRect)
diff --git a/src/codec/SkGifCodec.h b/src/codec/SkGifCodec.h
index a08e7ee552..984bceafd1 100644
--- a/src/codec/SkGifCodec.h
+++ b/src/codec/SkGifCodec.h
@@ -182,15 +182,15 @@ private:
      * Creates an instance of the decoder
      * Called only by NewFromStream
      *
-     * @param srcInfo contains the source width and height
+     * @param info contains properties of the encoded data
      * @param stream the stream of image data
      * @param gif pointer to library type that manages gif decode
      *            takes ownership
      * @param transIndex  The transparent index.  An invalid value
      *            indicates that there is no transparent index.
      */
-    SkGifCodec(const SkImageInfo& srcInfo, SkStream* stream, GifFileType* gif, uint32_t transIndex,
-            const SkIRect& frameRect, bool frameIsSubset);
+    SkGifCodec(int width, int height, const SkEncodedInfo& info, SkStream* stream,
+            GifFileType* gif, uint32_t transIndex, const SkIRect& frameRect, bool frameIsSubset);
 
     SkAutoTCallVProc<GifFileType, CloseGif> fGif; // owned
     SkAutoTDeleteArray<uint8_t>             fSrcBuffer;
diff --git a/src/codec/SkIcoCodec.cpp b/src/codec/SkIcoCodec.cpp
index d74c150ff5..0e81b72407 100644
--- a/src/codec/SkIcoCodec.cpp
+++ b/src/codec/SkIcoCodec.cpp
@@ -168,20 +168,22 @@ SkCodec* SkIcoCodec::NewFromStream(SkStream* stream) {
             maxIndex = i;
         }
     }
-    SkImageInfo info = codecs->operator[](maxIndex)->getInfo();
+    int width = codecs->operator[](maxIndex)->getInfo().width();
+    int height = codecs->operator[](maxIndex)->getInfo().height();
+    SkEncodedInfo info = codecs->operator[](maxIndex)->getEncodedInfo();
 
     // Note that stream is owned by the embedded codec, the ico does not need
     // direct access to the stream.
-    return new SkIcoCodec(info, codecs.release());
+    return new SkIcoCodec(width, height, info, codecs.release());
 }
 
 /*
  * Creates an instance of the decoder
  * Called only by NewFromStream
  */
-SkIcoCodec::SkIcoCodec(const SkImageInfo& info,
+SkIcoCodec::SkIcoCodec(int width, int height, const SkEncodedInfo& info,
                        SkTArray<SkAutoTDelete<SkCodec>, true>* codecs)
-    : INHERITED(info, nullptr)
+    : INHERITED(width, height, info, nullptr)
     , fEmbeddedCodecs(codecs)
     , fCurrScanlineCodec(nullptr)
 {}
diff --git a/src/codec/SkIcoCodec.h b/src/codec/SkIcoCodec.h
index 9a3f248af5..8c56aee4c6 100644
--- a/src/codec/SkIcoCodec.h
+++ b/src/codec/SkIcoCodec.h
@@ -71,7 +71,8 @@ private:
      * Constructor called by NewFromStream
      * @param embeddedCodecs codecs for the embedded images, takes ownership
      */
-    SkIcoCodec(const SkImageInfo& srcInfo, SkTArray<SkAutoTDelete<SkCodec>, true>* embeddedCodecs);
+    SkIcoCodec(int width, int height, const SkEncodedInfo& info,
+            SkTArray<SkAutoTDelete<SkCodec>, true>* embeddedCodecs);
 
     SkAutoTDelete<SkTArray<SkAutoTDelete<SkCodec>, true>> fEmbeddedCodecs; // owned
 
diff --git a/src/codec/SkJpegCodec.cpp b/src/codec/SkJpegCodec.cpp
index 76d2ee8572..6b97b2fe4a 100644
--- a/src/codec/SkJpegCodec.cpp
+++ b/src/codec/SkJpegCodec.cpp
@@ -211,17 +211,20 @@ bool SkJpegCodec::ReadHeader(SkStream* stream, SkCodec** codecOut,
     }
 
     if (codecOut) {
-        // Recommend the color type to decode to
-        const SkColorType colorType = decoderMgr->getColorType();
+        // Get the encoded color type
+        SkEncodedInfo::Color color = decoderMgr->getEncodedColor();
+        if (SkEncodedInfo::kUnknown_Color == color) {
+            return false;
+        }
 
         // Create image info object and the codec
-        const SkImageInfo& imageInfo = SkImageInfo::Make(decoderMgr->dinfo()->image_width,
-                decoderMgr->dinfo()->image_height, colorType, kOpaque_SkAlphaType);
+        SkEncodedInfo info = SkEncodedInfo::Make(color, SkEncodedInfo::kOpaque_Alpha, 8);
 
         Origin orientation = get_exif_orientation(decoderMgr->dinfo());
         sk_sp<SkColorSpace> colorSpace = get_icc_profile(decoderMgr->dinfo());
 
-        *codecOut = new SkJpegCodec(imageInfo, stream, decoderMgr.release(), colorSpace,
+        *codecOut = new SkJpegCodec(decoderMgr->dinfo()->image_width,
+                decoderMgr->dinfo()->image_height, info, stream, decoderMgr.release(), colorSpace,
                 orientation);
     } else {
         SkASSERT(nullptr != decoderMgrOut);
@@ -242,9 +245,9 @@ SkCodec* SkJpegCodec::NewFromStream(SkStream* stream) {
     return nullptr;
 }
 
-SkJpegCodec::SkJpegCodec(const SkImageInfo& srcInfo, SkStream* stream,
+SkJpegCodec::SkJpegCodec(int width, int height, const SkEncodedInfo& info, SkStream* stream,
         JpegDecoderMgr* decoderMgr, sk_sp<SkColorSpace> colorSpace, Origin origin)
-    : INHERITED(srcInfo, stream, colorSpace, origin)
+    : INHERITED(width, height, info, stream, colorSpace, origin)
     , fDecoderMgr(decoderMgr)
     , fReadyState(decoderMgr->dinfo()->global_state)
     , fSwizzlerSubset(SkIRect::MakeEmpty())
diff --git a/src/codec/SkJpegCodec.h b/src/codec/SkJpegCodec.h
index d3ea132da7..f8cddd0221 100644
--- a/src/codec/SkJpegCodec.h
+++ b/src/codec/SkJpegCodec.h
@@ -86,13 +86,13 @@ private:
      * Creates an instance of the decoder
      * Called only by NewFromStream
      *
-     * @param srcInfo contains the source width and height
+     * @param info contains properties of the encoded data
      * @param stream the encoded image data
      * @param decoderMgr holds decompress struct, src manager, and error manager
      *                   takes ownership
      */
-    SkJpegCodec(const SkImageInfo& srcInfo, SkStream* stream, JpegDecoderMgr* decoderMgr,
-            sk_sp<SkColorSpace> colorSpace, Origin origin);
+    SkJpegCodec(int width, int height, const SkEncodedInfo& info, SkStream* stream,
+            JpegDecoderMgr* decoderMgr, sk_sp<SkColorSpace> colorSpace, Origin origin);
 
     /*
      * Checks if the conversion between the input image and the requested output
diff --git a/src/codec/SkJpegDecoderMgr.cpp b/src/codec/SkJpegDecoderMgr.cpp
index 63228bb585..8517e0dac2 100644
--- a/src/codec/SkJpegDecoderMgr.cpp
+++ b/src/codec/SkJpegDecoderMgr.cpp
@@ -35,12 +35,20 @@ SkCodec::Result JpegDecoderMgr::returnFailure(const char caller[], SkCodec::Resu
     return result;
 }
 
-SkColorType JpegDecoderMgr::getColorType() {
+SkEncodedInfo::Color JpegDecoderMgr::getEncodedColor() {
     switch (fDInfo.jpeg_color_space) {
         case JCS_GRAYSCALE:
-            return kGray_8_SkColorType;
+            return SkEncodedInfo::kGray_Color;
+        case JCS_YCbCr:
+            return SkEncodedInfo::kYUV_Color;
+        case JCS_RGB:
+            return SkEncodedInfo::kRGB_Color;
+        case JCS_YCCK:
+            return SkEncodedInfo::kYCCK_Color;
+        case JCS_CMYK:
+            return SkEncodedInfo::kInvertedCMYK_Color;
         default:
-            return kN32_SkColorType;
+            return SkEncodedInfo::kUnknown_Color;
     }
 }
 
diff --git a/src/codec/SkJpegDecoderMgr.h b/src/codec/SkJpegDecoderMgr.h
index e1127bad34..a5078bb2d3 100644
--- a/src/codec/SkJpegDecoderMgr.h
+++ b/src/codec/SkJpegDecoderMgr.h
@@ -43,9 +43,10 @@ public:
     void  init();
 
     /*
-     * Recommend a color type based on the encoded format
+     * Returns the encoded color type of the jpeg, or kUnknown if the
+     * color type can't be determined
      */
-    SkColorType getColorType();
+    SkEncodedInfo::Color getEncodedColor();
 
     /*
      * Free memory used by the decode manager
diff --git a/src/codec/SkPngCodec.cpp b/src/codec/SkPngCodec.cpp
index 8ae2360f25..33c3b6095b 100644
--- a/src/codec/SkPngCodec.cpp
+++ b/src/codec/SkPngCodec.cpp
@@ -279,7 +279,7 @@ sk_sp<SkColorSpace> read_color_space(png_structp png_ptr, png_infop info_ptr) {
 //      png_structp on success.
 // @param info_ptrp Optional output variable. If non-NULL, will be set to a new
 //      png_infop on success;
-// @param imageInfo Optional output variable. If non-NULL, will be set to
+// @param info Optional output variable. If non-NULL, will be set to
 //      reflect the properties of the encoded image on success.
 // @param bitDepthPtr Optional output variable. If non-NULL, will be set to the
 //      bit depth of the encoded image on success.
@@ -290,7 +290,8 @@ sk_sp<SkColorSpace> read_color_space(png_structp png_ptr, png_infop info_ptr) {
 //      If it returns false, the passed in fields (except stream) are unchanged.
 static bool read_header(SkStream* stream, SkPngChunkReader* chunkReader,
                         png_structp* png_ptrp, png_infop* info_ptrp,
-                        SkImageInfo* imageInfo, int* bitDepthPtr, int* numberPassesPtr) {
+                        int* width, int* height, SkEncodedInfo* info, int* bitDepthPtr,
+                        int* numberPassesPtr) {
     // The image is known to be a PNG. Decode enough to know the SkImageInfo.
     png_structp png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, nullptr,
                                                  sk_error_fn, sk_warning_fn);
@@ -348,8 +349,8 @@ static bool read_header(SkStream* stream, SkPngChunkReader* chunkReader,
     // Now determine the default colorType and alphaType and set the required transforms.
     // Often, we depend on SkSwizzler to perform any transforms that we need.  However, we
     // still depend on libpng for many of the rare and PNG-specific cases.
-    SkColorType colorType = kUnknown_SkColorType;
-    SkAlphaType alphaType = kUnknown_SkAlphaType;
+    SkEncodedInfo::Color color;
+    SkEncodedInfo::Alpha alpha;
     switch (encodedColorType) {
         case PNG_COLOR_TYPE_PALETTE:
             // Extract multiple pixels with bit depths of 1, 2, and 4 from a single
@@ -359,20 +360,21 @@ static bool read_header(SkStream* stream, SkPngChunkReader* chunkReader,
                 png_set_packing(png_ptr);
             }
 
-            colorType = kIndex_8_SkColorType;
-            // Set the alpha type depending on if a transparency chunk exists.
-            alphaType = png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS) ?
-                    kUnpremul_SkAlphaType : kOpaque_SkAlphaType;
+            color = SkEncodedInfo::kPalette_Color;
+            // Set the alpha depending on if a transparency chunk exists.
+            alpha = png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS) ?
+                    SkEncodedInfo::kUnpremul_Alpha : SkEncodedInfo::kOpaque_Alpha;
             break;
         case PNG_COLOR_TYPE_RGB:
             if (png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS)) {
                 // Convert to RGBA if transparency chunk exists.
                 png_set_tRNS_to_alpha(png_ptr);
-                alphaType = kUnpremul_SkAlphaType;
+                color = SkEncodedInfo::kRGBA_Color;
+                alpha = SkEncodedInfo::kBinary_Alpha;
             } else {
-                alphaType = kOpaque_SkAlphaType;
+                color = SkEncodedInfo::kRGB_Color;
+                alpha = SkEncodedInfo::kOpaque_Alpha;
             }
-            colorType = kN32_SkColorType;
             break;
         case PNG_COLOR_TYPE_GRAY:
             // Expand grayscale images to the full 8 bits from 1, 2, or 4 bits/pixel.
@@ -383,29 +385,26 @@ static bool read_header(SkStream* stream, SkPngChunkReader* chunkReader,
 
             if (png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS)) {
                 png_set_tRNS_to_alpha(png_ptr);
-
-                // We will recommend kN32 here since we do not support kGray
-                // with alpha.
-                colorType = kN32_SkColorType;
-                alphaType = kUnpremul_SkAlphaType;
+                color = SkEncodedInfo::kGrayAlpha_Color;
+                alpha = SkEncodedInfo::kBinary_Alpha;
             } else {
-                colorType = kGray_8_SkColorType;
-                alphaType = kOpaque_SkAlphaType;
+                color = SkEncodedInfo::kGray_Color;
+                alpha = SkEncodedInfo::kOpaque_Alpha;
             }
             break;
         case PNG_COLOR_TYPE_GRAY_ALPHA:
-            // We will recommend kN32 here since we do not support anything
-            // similar to GRAY_ALPHA.
-            colorType = kN32_SkColorType;
-            alphaType = kUnpremul_SkAlphaType;
+            color = SkEncodedInfo::kGrayAlpha_Color;
+            alpha = SkEncodedInfo::kUnpremul_Alpha;
             break;
         case PNG_COLOR_TYPE_RGBA:
-            colorType = kN32_SkColorType;
-            alphaType = kUnpremul_SkAlphaType;
+            color = SkEncodedInfo::kRGBA_Color;
+            alpha = SkEncodedInfo::kUnpremul_Alpha;
             break;
         default:
             // All the color types have been covered above.
             SkASSERT(false);
+            color = SkEncodedInfo::kRGBA_Color;
+            alpha = SkEncodedInfo::kUnpremul_Alpha;
     }
 
     int numberPasses = png_set_interlace_handling(png_ptr);
@@ -413,13 +412,14 @@ static bool read_header(SkStream* stream, SkPngChunkReader* chunkReader,
         *numberPassesPtr = numberPasses;
     }
 
-    SkColorProfileType profileType = kLinear_SkColorProfileType;
-    if (png_get_valid(png_ptr, info_ptr, PNG_INFO_sRGB)) {
-        profileType = kSRGB_SkColorProfileType;
+    if (info) {
+        *info = SkEncodedInfo::Make(color, alpha, 8);
     }
-
-    if (imageInfo) {
-        *imageInfo = SkImageInfo::Make(origWidth, origHeight, colorType, alphaType, profileType);
+    if (width) {
+        *width = origWidth;
+    }
+    if (height) {
+        *height = origHeight;
     }
     autoClean.release();
     if (png_ptrp) {
@@ -432,10 +432,10 @@ static bool read_header(SkStream* stream, SkPngChunkReader* chunkReader,
     return true;
 }
 
-SkPngCodec::SkPngCodec(const SkImageInfo& info, SkStream* stream, SkPngChunkReader* chunkReader,
-                       png_structp png_ptr, png_infop info_ptr, int bitDepth, int numberPasses,
-                       sk_sp<SkColorSpace> colorSpace)
-    : INHERITED(info, stream, colorSpace)
+SkPngCodec::SkPngCodec(int width, int height, const SkEncodedInfo& info, SkStream* stream,
+                       SkPngChunkReader* chunkReader, png_structp png_ptr, png_infop info_ptr,
+                       int bitDepth, int numberPasses, sk_sp<SkColorSpace> colorSpace)
+    : INHERITED(width, height, info, stream, colorSpace)
     , fPngChunkReader(SkSafeRef(chunkReader))
     , fPng_ptr(png_ptr)
     , fInfo_ptr(info_ptr)
@@ -538,7 +538,7 @@ bool SkPngCodec::onRewind() {
     png_structp png_ptr;
     png_infop info_ptr;
     if (!read_header(this->stream(), fPngChunkReader.get(), &png_ptr, &info_ptr,
-                     nullptr, nullptr, nullptr)) {
+                     nullptr, nullptr, nullptr, nullptr, nullptr)) {
         return false;
     }
 
@@ -644,10 +644,11 @@ uint32_t SkPngCodec::onGetFillValue(SkColorType colorType) const {
 // Subclass of SkPngCodec which supports scanline decoding
 class SkPngScanlineDecoder : public SkPngCodec {
 public:
-    SkPngScanlineDecoder(const SkImageInfo& srcInfo, SkStream* stream,
+    SkPngScanlineDecoder(int width, int height, const SkEncodedInfo& info, SkStream* stream,
             SkPngChunkReader* chunkReader, png_structp png_ptr, png_infop info_ptr, int bitDepth,
             sk_sp<SkColorSpace> colorSpace)
-        : INHERITED(srcInfo, stream, chunkReader, png_ptr, info_ptr, bitDepth, 1, colorSpace)
+        : INHERITED(width, height, info, stream, chunkReader, png_ptr, info_ptr, bitDepth, 1,
+                    colorSpace)
         , fSrcRow(nullptr)
     {}
 
@@ -710,11 +711,11 @@ private:
 
 class SkPngInterlacedScanlineDecoder : public SkPngCodec {
 public:
-    SkPngInterlacedScanlineDecoder(const SkImageInfo& srcInfo, SkStream* stream,
-            SkPngChunkReader* chunkReader, png_structp png_ptr, png_infop info_ptr,
-            int bitDepth, int numberPasses, sk_sp<SkColorSpace> colorSpace)
-        : INHERITED(srcInfo, stream, chunkReader, png_ptr, info_ptr, bitDepth, numberPasses,
-                    colorSpace)
+    SkPngInterlacedScanlineDecoder(int width, int height, const SkEncodedInfo& info,
+            SkStream* stream, SkPngChunkReader* chunkReader, png_structp png_ptr,
+            png_infop info_ptr, int bitDepth, int numberPasses, sk_sp<SkColorSpace> colorSpace)
+        : INHERITED(width, height, info, stream, chunkReader, png_ptr, info_ptr, bitDepth,
+                    numberPasses, colorSpace)
         , fHeight(-1)
         , fCanSkipRewind(false)
     {
@@ -836,23 +837,24 @@ SkCodec* SkPngCodec::NewFromStream(SkStream* stream, SkPngChunkReader* chunkRead
     SkAutoTDelete<SkStream> streamDeleter(stream);
     png_structp png_ptr;
     png_infop info_ptr;
-    SkImageInfo imageInfo;
+    int width, height;
+    SkEncodedInfo imageInfo;
     int bitDepth;
     int numberPasses;
 
-    if (!read_header(stream, chunkReader, &png_ptr, &info_ptr, &imageInfo, &bitDepth,
-                     &numberPasses)) {
+    if (!read_header(stream, chunkReader, &png_ptr, &info_ptr, &width, &height, &imageInfo,
+                     &bitDepth, &numberPasses)) {
         return nullptr;
     }
 
     auto colorSpace = read_color_space(png_ptr, info_ptr);
 
     if (1 == numberPasses) {
-        return new SkPngScanlineDecoder(imageInfo, streamDeleter.release(), chunkReader,
-                                        png_ptr, info_ptr, bitDepth, colorSpace);
+        return new SkPngScanlineDecoder(width, height, imageInfo, streamDeleter.release(),
+                                        chunkReader, png_ptr, info_ptr, bitDepth, colorSpace);
     }
 
-    return new SkPngInterlacedScanlineDecoder(imageInfo, streamDeleter.release(), chunkReader,
-                                              png_ptr, info_ptr, bitDepth, numberPasses,
-                                              colorSpace);
+    return new SkPngInterlacedScanlineDecoder(width, height, imageInfo, streamDeleter.release(),
+                                              chunkReader, png_ptr, info_ptr, bitDepth,
+                                              numberPasses, colorSpace);
 }
diff --git a/src/codec/SkPngCodec.h b/src/codec/SkPngCodec.h
index 5673e5b4fa..8587bf8a14 100644
--- a/src/codec/SkPngCodec.h
+++ b/src/codec/SkPngCodec.h
@@ -41,8 +41,8 @@ protected:
         return fSwizzler;
     }
 
-    SkPngCodec(const SkImageInfo&, SkStream*, SkPngChunkReader*, png_structp, png_infop, int, int,
-               sk_sp<SkColorSpace>);
+    SkPngCodec(int width, int height, const SkEncodedInfo&, SkStream*, SkPngChunkReader*,
+            png_structp, png_infop, int, int, sk_sp<SkColorSpace>);
 
     png_structp png_ptr() { return fPng_ptr; }
     SkSwizzler* swizzler() { return fSwizzler; }
diff --git a/src/codec/SkRawCodec.cpp b/src/codec/SkRawCodec.cpp
index ef8ba700a4..51de2fcec0 100644
--- a/src/codec/SkRawCodec.cpp
+++ b/src/codec/SkRawCodec.cpp
@@ -515,8 +515,16 @@ public:
         }
     }
 
-    const SkImageInfo& getImageInfo() const {
-        return fImageInfo;
+    const SkEncodedInfo& getEncodedInfo() const {
+        return fEncodedInfo;
+    }
+
+    int width() const {
+        return fWidth;
+    }
+
+    int height() const {
+        return fHeight;
     }
 
     bool isScalable() const {
@@ -545,8 +553,11 @@ private:
         return 0x2A == get_endian_short(header + 2, littleEndian);
     }
 
-    void init(const int width, const int height, const dng_point& cfaPatternSize) {
-        fImageInfo = SkImageInfo::Make(width, height, kN32_SkColorType, kOpaque_SkAlphaType);
+    void init(int width, int height, const dng_point& cfaPatternSize) {
+        fWidth = width;
+        fHeight = height;
+        fEncodedInfo = SkEncodedInfo::Make(SkEncodedInfo::kRGB_Color,
+                SkEncodedInfo::kOpaque_Alpha, 8);
 
         // The DNG SDK scales only during demosaicing, so scaling is only possible when
         // a mosaic info is available.
@@ -616,7 +627,9 @@ private:
     SkAutoTDelete<dng_negative> fNegative;
     SkAutoTDelete<dng_stream> fDngStream;
 
-    SkImageInfo fImageInfo;
+    int fWidth;
+    int fHeight;
+    SkEncodedInfo fEncodedInfo;
     bool fIsScalable;
     bool fIsXtransImage;
 };
@@ -764,5 +777,5 @@ bool SkRawCodec::onDimensionsSupported(const SkISize& dim) {
 SkRawCodec::~SkRawCodec() {}
 
 SkRawCodec::SkRawCodec(SkDngImage* dngImage)
-    : INHERITED(dngImage->getImageInfo(), nullptr)
+    : INHERITED(dngImage->width(), dngImage->height(), dngImage->getEncodedInfo(), nullptr)
     , fDngImage(dngImage) {}
diff --git a/src/codec/SkWbmpCodec.cpp b/src/codec/SkWbmpCodec.cpp
index 90ee322b1f..9a842ac91f 100644
--- a/src/codec/SkWbmpCodec.cpp
+++ b/src/codec/SkWbmpCodec.cpp
@@ -104,8 +104,8 @@ bool SkWbmpCodec::readRow(uint8_t* row) {
     return this->stream()->read(row, fSrcRowBytes) == fSrcRowBytes;
 }
 
-SkWbmpCodec::SkWbmpCodec(const SkImageInfo& info, SkStream* stream)
-    : INHERITED(info, stream)
+SkWbmpCodec::SkWbmpCodec(int width, int height, const SkEncodedInfo& info, SkStream* stream)
+    : INHERITED(width, height, info, stream)
     , fSrcRowBytes(get_src_row_bytes(this->getInfo().width()))
     , fSwizzler(nullptr)
     , fColorTable(nullptr)
@@ -166,9 +166,9 @@ SkCodec* SkWbmpCodec::NewFromStream(SkStream* stream) {
     if (!read_header(stream, &size)) {
         return nullptr;
     }
-    SkImageInfo info = SkImageInfo::Make(size.width(), size.height(),
-            kGray_8_SkColorType, kOpaque_SkAlphaType);
-    return new SkWbmpCodec(info, streamDeleter.release());
+    SkEncodedInfo info = SkEncodedInfo::Make(SkEncodedInfo::kGray_Color,
+            SkEncodedInfo::kOpaque_Alpha, 1);
+    return new SkWbmpCodec(size.width(), size.height(), info, streamDeleter.release());
 }
 
 int SkWbmpCodec::onGetScanlines(void* dst, int count, size_t dstRowBytes) {
diff --git a/src/codec/SkWbmpCodec.h b/src/codec/SkWbmpCodec.h
index f43f615ed2..9f29237e23 100644
--- a/src/codec/SkWbmpCodec.h
+++ b/src/codec/SkWbmpCodec.h
@@ -44,7 +44,7 @@ private:
      */
     bool readRow(uint8_t* row);
 
-    SkWbmpCodec(const SkImageInfo&, SkStream*);
+    SkWbmpCodec(int width, int height, const SkEncodedInfo&, SkStream*);
 
     const size_t                 fSrcRowBytes;
 
diff --git a/src/codec/SkWebpCodec.cpp b/src/codec/SkWebpCodec.cpp
index 77af8e5e8f..e40c3f2377 100644
--- a/src/codec/SkWebpCodec.cpp
+++ b/src/codec/SkWebpCodec.cpp
@@ -31,7 +31,7 @@ bool SkWebpCodec::IsWebp(const void* buf, size_t bytesRead) {
 // Parse headers of RIFF container, and check for valid Webp (VP8) content.
 // NOTE: This calls peek instead of read, since onGetPixels will need these
 // bytes again.
-static bool webp_parse_header(SkStream* stream, SkImageInfo* info) {
+static bool webp_parse_header(SkStream* stream, int* width, int* height, SkEncodedInfo* info) {
     unsigned char buffer[WEBP_VP8_HEADER_SIZE];
     SkASSERT(WEBP_VP8_HEADER_SIZE <= SkCodec::MinBufferedBytesNeeded());
 
@@ -62,22 +62,55 @@ static bool webp_parse_header(SkStream* stream, SkImageInfo* info) {
     }
 
     if (info) {
-        // FIXME: Is N32 the right type?
-        // Is unpremul the right type? Clients of SkCodec may assume it's the
-        // best type, when Skia currently cannot draw unpremul (and raster is faster
-        // with premul).
-        *info = SkImageInfo::Make(features.width, features.height, kN32_SkColorType,
-                                  SkToBool(features.has_alpha) ? kUnpremul_SkAlphaType
-                                                              : kOpaque_SkAlphaType);
+        SkEncodedInfo::Color color;
+        SkEncodedInfo::Alpha alpha;
+        switch (features.format) {
+            case 0:
+                // This indicates a "mixed" format.  We would see this for
+                // animated webps or for webps encoded in multiple fragments.
+                // I believe that this is a rare case.
+                // We could also guess kYUV here, but I think it makes more
+                // sense to guess kBGRA which is likely closer to the final
+                // output.  Otherwise, we might end up converting
+                // BGRA->YUVA->BGRA.
+                color = SkEncodedInfo::kBGRA_Color;
+                alpha = SkEncodedInfo::kUnpremul_Alpha;
+                break;
+            case 1:
+                // This is the lossy format (YUV).
+                if (SkToBool(features.has_alpha)) {
+                    color = SkEncodedInfo::kYUVA_Color;
+                    alpha = SkEncodedInfo::kUnpremul_Alpha;
+                } else {
+                    color = SkEncodedInfo::kYUV_Color;
+                    alpha = SkEncodedInfo::kOpaque_Alpha;
+                }
+                break;
+            case 2:
+                // This is the lossless format (BGRA).
+                // FIXME: Should we check the has_alpha flag here?  It looks
+                //        like the image is encoded with an alpha channel
+                //        regardless of whether or not the alpha flag is set.
+                color = SkEncodedInfo::kBGRA_Color;
+                alpha = SkEncodedInfo::kUnpremul_Alpha;
+                break;
+            default:
+                return false;
+        }
+
+        *width = features.width;
+        *height = features.height;
+        *info = SkEncodedInfo::Make(color, alpha, 8);
     }
     return true;
 }
 
 SkCodec* SkWebpCodec::NewFromStream(SkStream* stream) {
     SkAutoTDelete<SkStream> streamDeleter(stream);
-    SkImageInfo info;
-    if (webp_parse_header(stream, &info)) {
-        return new SkWebpCodec(info, streamDeleter.release());
+    int width, height;
+    SkEncodedInfo info;
+    if (webp_parse_header(stream, &width, &height, &info)) {
+        return new SkWebpCodec(width, height, info, streamDeleter.release());
     }
     return nullptr;
 }
@@ -252,7 +285,7 @@ SkCodec::Result SkWebpCodec::onGetPixels(const SkImageInfo& dstInfo, void* dst,
     }
 }
 
-SkWebpCodec::SkWebpCodec(const SkImageInfo& info, SkStream* stream)
+SkWebpCodec::SkWebpCodec(int width, int height, const SkEncodedInfo& info, SkStream* stream)
     // The spec says an unmarked image is sRGB, so we return that space here.
     // TODO: Add support for parsing ICC profiles from webps.
-    : INHERITED(info, stream, SkColorSpace::NewNamed(SkColorSpace::kSRGB_Named)) {}
+    : INHERITED(width, height, info, stream, SkColorSpace::NewNamed(SkColorSpace::kSRGB_Named)) {}
diff --git a/src/codec/SkWebpCodec.h b/src/codec/SkWebpCodec.h
index 2d81cf3d9c..908bf2cd4f 100644
--- a/src/codec/SkWebpCodec.h
+++ b/src/codec/SkWebpCodec.h
@@ -34,7 +34,7 @@ protected:
 
     bool onGetValidSubset(SkIRect* /* desiredSubset */) const override;
 private:
-    SkWebpCodec(const SkImageInfo&, SkStream*);
+    SkWebpCodec(int width, int height, const SkEncodedInfo&, SkStream*);
 
     typedef SkCodec INHERITED;
 };