Fill incomplete images in SkCodec parent class

src/codec/SkCodec_libico.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 "SkBmpCodec.h"
 #include "SkCodec_libico.h"
 #include "SkCodec_libpng.h"
@@ skipping 95 matching lines @@
     SkTQSort(directoryEntries.get(), directoryEntries.get() + numImages - 1,
             lessThan);
 
     // Now will construct a candidate codec for each of the embedded images
     uint32_t bytesRead = kIcoDirectoryBytes + numImages * kIcoDirEntryBytes;
     SkAutoTDelete<SkTArray<SkAutoTDelete<SkCodec>, true>> codecs(
             new (SkTArray<SkAutoTDelete<SkCodec>, true>)(numImages));
     for (uint32_t i = 0; i < numImages; i++) {
         uint32_t offset = directoryEntries.get()[i].offset;
         uint32_t size = directoryEntries.get()[i].size;
-        
+
         // Ensure that the offset is valid
         if (offset < bytesRead) {
             SkCodecPrintf("Warning: invalid ico offset.\n");
             continue;
         }
 
         // If we cannot skip, assume we have reached the end of the stream and
         // stop trying to make codecs
         if (inputStream.get()->skip(offset - bytesRead) != offset - bytesRead) {
             SkCodecPrintf("Warning: could not skip to ico offset.\n");
@@ skipping 108 matching lines @@
     }
 
     return false;
 }
 
 /*
  * Initiates the Ico decode
  */
 SkCodec::Result SkIcoCodec::onGetPixels(const SkImageInfo& dstInfo,
                                         void* dst, size_t dstRowBytes,
-                                        const Options& opts, SkPMColor* ct,
-                                        int* ptr) {
+                                        const Options& opts, SkPMColor* colorTable,
+                                        int* colorCount, int* rowsDecoded) {
     if (opts.fSubset) {
         // Subsets are not supported.
         return kUnimplemented;
     }
 
     if (!valid_alpha(dstInfo.alphaType(), this->getInfo().alphaType())) {
         return kInvalidConversion;
     }
 
     // We return invalid scale if there is no candidate image with matching
@@ skipping 15 matching lines @@
                     embeddedAlpha = dstInfo.alphaType();
                     break;
                 case kOpaque_SkAlphaType:
                     // If the embedded codec claims it is opaque, decode as if it is opaque.
                     break;
                 default:
                     SkASSERT(false);
                     break;
             }
             SkImageInfo info = dstInfo.makeAlphaType(embeddedAlpha);
-            result = embeddedCodec->getPixels(info, dst, dstRowBytes, &opts, ct, ptr);
+            result = embeddedCodec->getPixels(info, dst, dstRowBytes, &opts, colorTable,
+                    colorCount);
+            // The embedded codec will handle filling incomplete images, so we will indicate
+            // that all of the rows are initialized.
+            *rowsDecoded = info.height();
 
             // On a fatal error, keep trying to find an image to decode
             if (kInvalidConversion == result || kInvalidInput == result ||
                     kInvalidScale == result) {
                 SkCodecPrintf("Warning: Attempt to decode candidate ico failed.\n");
                 continue;
             }
 
             // On success or partial success, return the result
             return result;
         }
     }
 
     SkCodecPrintf("Error: No matching candidate image in ico.\n");
     return result;
 }