commit a096d7a6d03662073f4cd46f7db5fe2cf5495c36
author halcanary <halcanary@google.com> Fri Mar 27 12:16:53 2015 -0700
committer Commit bot <commit-bot@chromium.org> Fri Mar 27 12:16:53 2015 -0700
tree dcaf6ab6002e37a9525a82101ac640f2ead1bf46
parent 135b7ecaa81018aa497da6ef8a8493263df456ef

SkCodec: add wbmp class

Review URL: https://codereview.chromium.org/1006583005

src/codec/SkCodec.cpp

diff --git a/src/codec/SkCodec.cpp b/src/codec/SkCodec.cpp
index a49586f..33cc9e1 100644
--- a/src/codec/SkCodec.cpp
+++ b/src/codec/SkCodec.cpp
@@ -10,6 +10,7 @@
 #include "SkCodec_libbmp.h"
 #include "SkCodec_libico.h"
 #include "SkCodec_libpng.h"
+#include "SkCodec_wbmp.h"
 #include "SkStream.h"
 
 struct DecoderProc {
@@ -20,7 +21,8 @@
 static const DecoderProc gDecoderProcs[] = {
     { SkPngCodec::IsPng, SkPngCodec::NewFromStream },
     { SkIcoCodec::IsIco, SkIcoCodec::NewFromStream },
-    { SkBmpCodec::IsBmp, SkBmpCodec::NewFromStream }
+    { SkBmpCodec::IsBmp, SkBmpCodec::NewFromStream },
+    { SkWbmpCodec::IsWbmp, SkWbmpCodec::NewFromStream }
 };
 
 SkCodec* SkCodec::NewFromStream(SkStream* stream) {
@@ -56,12 +58,16 @@
     , fNeedsRewind(false)
 {}
 
-bool SkCodec::rewindIfNeeded() {
+SkCodec::RewindState SkCodec::rewindIfNeeded() {
     // Store the value of fNeedsRewind so we can update it. Next read will
     // require a rewind.
-    const bool neededRewind = fNeedsRewind;
+    const bool needsRewind = fNeedsRewind;
     fNeedsRewind = true;
-    return !neededRewind || fStream->rewind();
+    if (!needsRewind) {
+        return kNoRewindNecessary_RewindState;
+    }
+    return fStream->rewind() ? kRewound_RewindState
+                             : kCouldNotRewind_RewindState;
 }
 
 SkScanlineDecoder* SkCodec::getScanlineDecoder(const SkImageInfo& dstInfo) {