Rename SkGifCodec, SkIcoCodec, SkWbmpCodec

src/codec/SkCodec_libgif.h

Index: src/codec/SkCodec_libgif.h
diff --git a/src/codec/SkCodec_libgif.h b/src/codec/SkCodec_libgif.h
deleted file mode 100644
index ba48989cbbf16687f3aab030803ea6f94177e389..0000000000000000000000000000000000000000
--- a/src/codec/SkCodec_libgif.h
+++ /dev/null
@@ -1,203 +0,0 @@
-/*
- * 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 "SkCodec.h"
-#include "SkColorTable.h"
-#include "SkImageInfo.h"
-#include "SkSwizzler.h"
-
-#include "gif_lib.h"
-
-/*
- *
- * This class implements the decoding for gif images
- *
- */
-class SkGifCodec : public SkCodec {
-public:
-    static bool IsGif(const void*, size_t);
-
-    /*
-     * Assumes IsGif was called and returned true
-     * Creates a gif decoder
-     * Reads enough of the stream to determine the image format
-     */
-    static SkCodec* NewFromStream(SkStream*);
-
-protected:
-
-    /*
-     * Read enough of the stream to initialize the SkGifCodec.
-     * Returns a bool representing success or failure.
-     *
-     * @param codecOut
-     * If it returned true, and codecOut was not nullptr,
-     * codecOut will be set to a new SkGifCodec.
-     *
-     * @param gifOut
-     * If it returned true, and codecOut was nullptr,
-     * gifOut must be non-nullptr and gifOut will be set to a new
-     * GifFileType pointer.
-     *
-     * @param stream
-     * Deleted on failure.
-     * codecOut will take ownership of it in the case where we created a codec.
-     * Ownership is unchanged when we returned a gifOut.
-     *
-     */
-    static bool ReadHeader(SkStream* stream, SkCodec** codecOut,
-            GifFileType** gifOut);
-
-    /*
-     * Performs the full gif decode
-     */
-    Result onGetPixels(const SkImageInfo&, void*, size_t, const Options&,
-            SkPMColor*, int*, int*) override;
-
-    SkEncodedFormat onGetEncodedFormat() const override {
-        return kGIF_SkEncodedFormat;
-    }
-
-    bool onRewind() override;
-
-    uint32_t onGetFillValue(SkColorType colorType, SkAlphaType alphaType) const override;
-
-    int onOutputScanline(int inputScanline) const override;
-
-private:
-
-    /*
-     * A gif can contain multiple image frames.  We will only decode the first
-     * frame.  This function reads up to the first image frame, processing
-     * transparency and/or animation information that comes before the image
-     * data.
-     *
-     * @param gif        Pointer to the library type that manages the gif decode
-     * @param transIndex This call will set the transparent index based on the
-     *                   extension data.
-     */
-     static Result ReadUpToFirstImage(GifFileType* gif, uint32_t* transIndex);
-
-     /*
-      * A gif may contain many image frames, all of different sizes.
-      * This function checks if the gif dimensions are valid, based on the frame
-      * dimensions, and corrects the gif dimensions if necessary.
-      *
-      * @param gif       Pointer to the library type that manages the gif decode
-      * @param size      Size of the image that we will decode.
-      *                  Will be set by this function if the return value is true.
-      * @param frameRect Contains the dimenions and offset of the first image frame.
-      *                  Will be set by this function if the return value is true.
-      *
-      * @return true on success, false otherwise
-      */
-     static bool GetDimensions(GifFileType* gif, SkISize* size, SkIRect* frameRect);
-
-    /*
-     * Initializes the color table that we will use for decoding.
-     *
-     * @param dstInfo         Contains the requested dst color type.
-     * @param inputColorPtr   Copies the encoded color table to the client's
-     *                        input color table if the client requests kIndex8.
-     * @param inputColorCount If the client requests kIndex8, sets
-     *                        inputColorCount to 256.  Since gifs always
-     *                        contain 8-bit indices, we need a 256 entry color
-     *                        table to ensure that indexing is always in
-     *                        bounds.
-     */
-    void initializeColorTable(const SkImageInfo& dstInfo, SkPMColor* colorPtr,
-            int* inputColorCount);
-
-   /*
-    * Checks for invalid inputs and calls setFrameDimensions(), and
-    * initializeColorTable() in the proper sequence.
-    */
-    Result prepareToDecode(const SkImageInfo& dstInfo, SkPMColor* inputColorPtr,
-            int* inputColorCount, const Options& opts);
-
-    /*
-     * Initializes the swizzler.
-     *
-     * @param dstInfo  Output image information.  Dimensions may have been
-     *                 adjusted if the image frame size does not match the size
-     *                 indicated in the header.
-     * @param options  Informs the swizzler if destination memory is zero initialized.
-     *                 Contains subset information.
-     */
-    Result initializeSwizzler(const SkImageInfo& dstInfo,
-            const Options& options);
-
-    SkSampler* getSampler(bool createIfNecessary) override {
-        SkASSERT(fSwizzler);
-        return fSwizzler;
-    }
-
-    /*
-     * @return true if the read is successful and false if the read fails.
-     */
-    bool readRow();
-
-    Result onStartScanlineDecode(const SkImageInfo& dstInfo, const Options& opts,
-                   SkPMColor inputColorPtr[], int* inputColorCount) override;
-
-    int onGetScanlines(void* dst, int count, size_t rowBytes) override;
-
-    bool onSkipScanlines(int count) override;
-
-    /*
-     * For a scanline decode of "count" lines, this function indicates how
-     * many of the "count" lines should be skipped until we reach the top of
-     * the image frame and how many of the "count" lines are actually inside
-     * the image frame.
-     *
-     * @param count           The number of scanlines requested.
-     * @param rowsBeforeFrame Output variable.  The number of lines before
-     *                        we reach the top of the image frame.
-     * @param rowsInFrame     Output variable.  The number of lines to decode
-     *                        inside the image frame.
-     */
-    void handleScanlineFrame(int count, int* rowsBeforeFrame, int* rowsInFrame);
-
-    SkScanlineOrder onGetScanlineOrder() const override;
-
-    /*
-     * This function cleans up the gif object after the decode completes
-     * It is used in a SkAutoTCallIProc template
-     */
-    static void CloseGif(GifFileType* gif);
-
-    /*
-     * Frees any extension data used in the decode
-     * Used in a SkAutoTCallVProc
-     */
-    static void FreeExtension(SavedImage* image);
-
-    /*
-     * Creates an instance of the decoder
-     * Called only by NewFromStream
-     *
-     * @param srcInfo contains the source width and height
-     * @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);
-
-    SkAutoTCallVProc<GifFileType, CloseGif> fGif; // owned
-    SkAutoTDeleteArray<uint8_t>             fSrcBuffer;
-    const SkIRect                           fFrameRect;
-    const uint32_t                          fTransIndex;
-    uint32_t                                fFillIndex;
-    const bool                              fFrameIsSubset;
-    SkAutoTDelete<SkSwizzler>               fSwizzler;
-    SkAutoTUnref<SkColorTable>              fColorTable;
-
-    typedef SkCodec INHERITED;
-};