Implementing filling for SkBmpCodec

src/codec/SkCodec_libgif.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 "SkCodec_libgif.h"
 #include "SkCodecPriv.h"
 #include "SkColorPriv.h"
@@ skipping 407 matching lines @@
 
                     // Modify the destination info
                     const SkImageInfo subsetDstInfo =
                             dstInfo.makeWH(innerWidth, innerHeight);
 
                     // Fill the destination with the fill color
                     // FIXME: This may not be the behavior that we want for
                     //        animated gifs where we draw on top of the
                     //        previous frame.
                     if (!skipBackground) {
-                        SkSwizzler::Fill(dst, dstInfo, dstRowBytes, 0, fillIndex, colorTable);
+                        SkSwizzler::Fill(dst, dstInfo, dstRowBytes, height, fillIndex, colorTable);
                     }
 
                     // Modify the dst pointer
                     const int32_t dstBytesPerPixel =
                             SkColorTypeBytesPerPixel(dstColorType);
                     void* subsetDst = SkTAddOffset<void*>(dst,
                             dstRowBytes * imageTop +
                             dstBytesPerPixel * imageLeft);
 
                     // Create the subset swizzler
@@ skipping 32 matching lines @@
                                     y, height - 1).c_str(), kIncompleteInput);
                         }
                         swizzler->next(buffer.get(), iter.nextY());
                     }
                 } else {
                     // Standard mode
                     for (int32_t y = 0; y < innerHeight; y++) {
                         if (GIF_ERROR == DGifGetLine(fGif, buffer.get(),
                                 innerWidth)) {
                             if (!skipBackground) {
-                                SkSwizzler::Fill(dst, dstInfo, dstRowBytes, y, fillIndex,
-                                        colorTable);
+                                SkSwizzler::Fill(swizzler->getDstRow(), dstInfo, dstRowBytes,
+                                        innerHeight - y, fillIndex, colorTable);
                             }
                             return gif_error(SkStringPrintf(
                                     "Could not decode line %d of %d.\n",
                                     y, height - 1).c_str(), kIncompleteInput);
                         }
                         swizzler->next(buffer.get());
                     }
                 }
 
                 // FIXME: Gif files may have multiple images stored in a single
@@ skipping 69 matching lines @@
                 // giflib returns an error code if the record type is not known.
                 // We should catch this error immediately.
                 SkASSERT(false);
                 break;
         }
     } while (TERMINATE_RECORD_TYPE != recordType);
 
     return gif_error("Could not find any images to decode in gif file.\n",
             kInvalidInput);
 }