Import FrameSequence

Change-Id: I09b668925366a22e8e7e80e4abeae24b3a98c639
(cherry picked from commit a1265c3d8a20e805e0c45083d5c7d728d4b70009)

1 files changed, 55 insertions, 0 deletions

diff --git a/framesequence/jni/FrameSequence.h b/framesequence/jni/FrameSequence.h
new file mode 100644
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+++ b/framesequence/jni/FrameSequence.h
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+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef RASTERMILL_FRAME_SEQUENCE_H
+#define RASTERMILL_FRAME_SEQUENCE_H
+
+#include "Stream.h"
+#include "Color.h"
+
+class FrameSequenceState {
+public:
+    /**
+     * Produces a frame of animation in the output buffer, drawing (at minimum) the delta since
+     * previousFrameNr (the current contents of the buffer), or from scratch if previousFrameNr is
+     * negative
+     *
+     * Returns frame's delay time in milliseconds.
+     */
+    virtual long drawFrame(int frameNr,
+            Color8888* outputPtr, int outputPixelStride, int previousFrameNr) = 0;
+    virtual ~FrameSequenceState() {}
+};
+
+class FrameSequence {
+public:
+    /**
+     * Creates a FrameSequence using data from the data stream
+     *
+     * Type determined by header information in the stream
+     */
+    static FrameSequence* create(Stream* stream);
+
+    virtual ~FrameSequence() {}
+    virtual int getWidth() const = 0;
+    virtual int getHeight() const = 0;
+    virtual int getFrameCount() const = 0;
+    virtual bool isOpaque() const = 0;
+
+    virtual FrameSequenceState* createState() const = 0;
+};
+
+#endif //RASTERMILL_FRAME_SEQUENCE_H