skia WIPjarred/canvas

1 files changed, 72 insertions, 0 deletions

diff --git a/src/deps/skia/include/core/SkImageEncoder.h b/src/deps/skia/include/core/SkImageEncoder.h
new file mode 100644
index 000000000..fd7bc8036
--- /dev/null
+++ b/src/deps/skia/include/core/SkImageEncoder.h
@@ -0,0 +1,72 @@
+/*
+ * Copyright 2011 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef SkImageEncoder_DEFINED
+#define SkImageEncoder_DEFINED
+
+// TODO: update clients so we can remove this include, they should IWYU
+#include "include/core/SkBitmap.h"
+
+#include "include/core/SkData.h"
+#include "include/core/SkEncodedImageFormat.h"
+#include "include/core/SkPixmap.h"
+#include "include/core/SkStream.h"
+
+class SkBitmap;
+
+/**
+ * Encode SkPixmap in the given binary image format.
+ *
+ * @param  dst     results are written to this stream.
+ * @param  src     source pixels.
+ * @param  format  image format, not all formats are supported.
+ * @param  quality range from 0-100, this is supported by jpeg and webp.
+ *                 higher values correspond to improved visual quality, but less compression.
+ *
+ * @return false iff input is bad or format is unsupported.
+ *
+ * Will always return false if Skia is compiled without image
+ * encoders.
+ *
+ * For SkEncodedImageFormat::kWEBP, if quality is 100, it will use lossless compression. Otherwise
+ * it will use lossy.
+ *
+ * For examples of encoding an image to a file or to a block of memory,
+ * see tools/ToolUtils.h.
+ */
+SK_API bool SkEncodeImage(SkWStream* dst, const SkPixmap& src,
+                          SkEncodedImageFormat format, int quality);
+
+/**
+ * The following helper function wraps SkEncodeImage().
+ */
+SK_API bool SkEncodeImage(SkWStream* dst, const SkBitmap& src, SkEncodedImageFormat f, int q);
+
+/**
+ * Encode SkPixmap in the given binary image format.
+ *
+ * @param  src     source pixels.
+ * @param  format  image format, not all formats are supported.
+ * @param  quality range from 0-100, this is supported by jpeg and webp.
+ *                 higher values correspond to improved visual quality, but less compression.
+ *
+ * @return encoded data or nullptr if input is bad or format is unsupported.
+ *
+ * Will always return nullptr if Skia is compiled without image
+ * encoders.
+ *
+ * For SkEncodedImageFormat::kWEBP, if quality is 100, it will use lossless compression. Otherwise
+ * it will use lossy.
+ */
+SK_API sk_sp<SkData> SkEncodePixmap(const SkPixmap& src, SkEncodedImageFormat format, int quality);
+
+/**
+ *  Helper that extracts the pixmap from the bitmap, and then calls SkEncodePixmap()
+ */
+SK_API sk_sp<SkData> SkEncodeBitmap(const SkBitmap& src, SkEncodedImageFormat format, int quality);
+
+#endif  // SkImageEncoder_DEFINED