Index: third_party/WebKit/Source/platform/image-encoders/ImageEncoder.h |
diff --git a/third_party/WebKit/Source/platform/image-encoders/ImageEncoder.h b/third_party/WebKit/Source/platform/image-encoders/ImageEncoder.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..b33e72deead2f37e50780ab36ea4c45541e87cc7 |
--- /dev/null |
+++ b/third_party/WebKit/Source/platform/image-encoders/ImageEncoder.h |
@@ -0,0 +1,71 @@ |
+// Copyright 2017 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#ifndef ImageEncoder_h |
+#define ImageEncoder_h |
+ |
+#include "platform/PlatformExport.h" |
+#include "platform/wtf/Vector.h" |
+#include "third_party/skia/include/core/SkStream.h" |
+#include "third_party/skia/include/encode/SkJpegEncoder.h" |
+#include "third_party/skia/include/encode/SkPngEncoder.h" |
+ |
+namespace blink { |
+ |
+class VectorWStream : public SkWStream { |
+ public: |
+ VectorWStream(Vector<unsigned char>* dst) : dst_(dst) { |
+ DCHECK(dst_); |
+ DCHECK_EQ(0UL, dst->size()); |
+ } |
+ |
+ bool write(const void* buffer, size_t size) override { |
+ dst_->Append((const unsigned char*)buffer, size); |
+ return true; |
+ } |
+ |
+ size_t bytesWritten() const override { return dst_->size(); } |
+ |
+ private: |
+ // Does not have ownership. |
+ Vector<unsigned char>* dst_; |
+}; |
+ |
+class PLATFORM_EXPORT ImageEncoder { |
+ public: |
+ static bool Encode(Vector<unsigned char>* dst, |
+ const SkPixmap& src, |
+ const SkJpegEncoder::Options&); |
+ |
+ static bool Encode(Vector<unsigned char>* dst, |
+ const SkPixmap& src, |
+ const SkPngEncoder::Options&); |
+ |
+ static std::unique_ptr<ImageEncoder> Create(Vector<unsigned char>* dst, |
+ const SkPixmap& src, |
+ const SkJpegEncoder::Options&); |
+ |
+ static std::unique_ptr<ImageEncoder> Create(Vector<unsigned char>* dst, |
+ const SkPixmap& src, |
+ const SkPngEncoder::Options&); |
+ |
+ bool encodeRows(int numRows) { return encoder_->encodeRows(numRows); } |
+ |
+ /** |
+ * If quality is in [0, 1], this will simply convert to a [0, 100] |
+ * integer scale (which is what is used by libjpeg-turbo). |
+ * |
+ * Otherwise, this will return the default value. |
+ */ |
+ static int ComputeJpegQuality(double quality); |
+ |
+ private: |
+ ImageEncoder(Vector<unsigned char>* dst) : dst_(dst) {} |
+ |
+ VectorWStream dst_; |
+ std::unique_ptr<SkEncoder> encoder_; |
+}; |
+}; |
+ |
+#endif |