Index: src/images/SkDecodingImageGenerator.h |
diff --git a/src/images/SkDecodingImageGenerator.h b/src/images/SkDecodingImageGenerator.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..d897bee80dd4c3d83d8846738958752880216a7a |
--- /dev/null |
+++ b/src/images/SkDecodingImageGenerator.h |
@@ -0,0 +1,69 @@ |
+/* |
+ * Copyright 2013 Google Inc. |
+ * |
+ * Use of this source code is governed by a BSD-style license that can be |
+ * found in the LICENSE file. |
+ */ |
+ |
+#ifndef SkDecodingImageGenerator_DEFINED |
+#define SkDecodingImageGenerator_DEFINED |
+ |
+#include "SkImageGenerator.h" |
+ |
+class SkBitmap; |
+ |
+/** |
+ * Calls into SkImageDecoder::DecodeMemoryToTarget to implement a |
+ * SkImageGenerator |
+ */ |
+class SkDecodingImageGenerator : public SkImageGenerator { |
+public: |
+ /* |
+ * The constructor will take a reference to the SkData. |
+ */ |
+ SkDecodingImageGenerator(SkData* data); |
+ virtual ~SkDecodingImageGenerator(); |
+ |
+ /** |
+ * Return a ref to the encoded (i.e. compressed) representation, |
+ * of this data. The caller is responsible for calling unref() |
+ * on the data when it is finished. |
+ */ |
+ virtual SkData* refEncodedData() SK_OVERRIDE; |
+ |
+ /** |
+ * Return some information about the image, allowing the owner fo |
scroggo
2013/11/19 22:19:27
of*
hal.canary
2013/11/20 00:07:10
I'll remove the sub-class's redundant comments.
|
+ * this ojbect to allocate pixels. |
scroggo
2013/11/19 22:19:27
object*
hal.canary
2013/11/20 00:07:10
I'll remove the sub-class's redundant comments.
|
+ * |
+ * @return false if anything goes wrong. |
+ */ |
+ virtual bool getInfo(SkImageInfo* info) SK_OVERRIDE; |
+ |
+ /** |
+ * Decode into the given pixels, a block of memory of size at |
+ * least (info.fHeight - 1) * rowBytes + (info.fWidth * |
+ * bytesPerPixel) |
+ * |
+ * @param info Should be identical to the info returned by |
+ * getInfo so that the implementation can confirm that the |
+ * caller knows what it is asking for (config, size). |
+ * This contract also allows the caller to specify |
scroggo
2013/11/19 22:19:27
These two sentences seem to say opposite things. T
hal.canary
2013/11/20 00:07:10
It is up to the implmentation.
|
+ * different output-configs, which the implementation can |
+ * decide to support or not. |
+ * |
+ * @return false if anything goes wrong. |
+ */ |
+ virtual bool getPixels(const SkImageInfo& info, |
+ void* pixels, |
+ size_t rowBytes) SK_OVERRIDE; |
+ |
+ /** |
+ * Install the SkData into the destination bitmap, using a new |
+ * SkDiscardablePixelRef and a new SkDecodingImageGenerator. |
+ */ |
+ static bool Install(SkData* data, SkBitmap* destination); |
+ |
+private: |
+ SkData* fData; |
+}; |
+#endif // SkDecodingImageGenerator_DEFINED |