1 files changed, 41 insertions, 0 deletions
diff --git a/src/images/SkEncoder.h b/src/images/SkEncoder.h
new file mode 100644
index 0000000000..e2686adb27
--- /dev/null
+++ b/src/images/SkEncoder.h
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2017 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef SkEncoder_DEFINED
+#define SkEncoder_DEFINED
+
+#include "SkPixmap.h"
+#include "SkTemplates.h"
+
+class SkEncoder : SkNoncopyable {
+public:
+
+    /**
+     *  Encode |numRows| rows of input.  If the caller requests more rows than are remaining
+     *  in the src, this will encode all of the remaining rows.  |numRows| must be greater
+     *  than zero.
+     */
+    bool encodeRows(int numRows);
+
+    virtual ~SkEncoder() {}
+
+protected:
+
+    virtual bool onEncodeRows(int numRows) = 0;
+
+    SkEncoder(const SkPixmap& src, size_t storageBytes)
+        : fSrc(src)
+        , fCurrRow(0)
+        , fStorage(storageBytes)
+    {}
+
+    const SkPixmap&        fSrc;
+    int                    fCurrRow;
+    SkAutoTMalloc<uint8_t> fStorage;
+};
+
+#endif