61 lines
1.7 KiB
C
61 lines
1.7 KiB
C
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/*
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* Copyright 2018 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef SkAnimCodecPlayer_DEFINED
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#define SkAnimCodecPlayer_DEFINED
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#include "SkCodec.h"
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class SkImage;
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class SkAnimCodecPlayer {
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public:
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SkAnimCodecPlayer(std::unique_ptr<SkCodec> codec);
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~SkAnimCodecPlayer();
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/**
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* Returns the current frame of the animation. This defaults to the first frame for
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* animated codecs (i.e. msec = 0). Calling this multiple times (without calling seek())
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* will always return the same image object (or null if there was an error).
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*/
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sk_sp<SkImage> getFrame();
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/**
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* Return the size of the image(s) that will be returned by getFrame().
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*/
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SkISize dimensions();
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/**
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* Returns the total duration of the animation in milliseconds. Returns 0 for a single-frame
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* image.
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*/
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uint32_t duration() { return fTotalDuration; }
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/**
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* Finds the closest frame associated with the time code (in milliseconds) and sets that
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* to be the current frame (call getFrame() to retrieve that image).
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* Returns true iff this call to seek() changed the "current frame" for the animation.
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* Thus if seek() returns false, then getFrame() will return the same image as it did
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* before this call to seek().
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*/
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bool seek(uint32_t msec);
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private:
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std::unique_ptr<SkCodec> fCodec;
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SkImageInfo fImageInfo;
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std::vector<SkCodec::FrameInfo> fFrameInfos;
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std::vector<sk_sp<SkImage> > fImages;
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int fCurrIndex = 0;
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uint32_t fTotalDuration;
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sk_sp<SkImage> getFrameAt(int index);
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};
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#endif
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