| /* |
| * 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 bool isOpaque() const = 0; |
| virtual int getFrameCount() const = 0; |
| virtual int getDefaultLoopCount() const = 0; |
| |
| virtual FrameSequenceState* createState() const = 0; |
| }; |
| |
| #endif //RASTERMILL_FRAME_SEQUENCE_H |