1 /* 2 * Copyright 2018 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #ifndef SkAnimCodecPlayer_DEFINED 9 #define SkAnimCodecPlayer_DEFINED 10 11 #include "SkCodec.h" 12 13 class SkImage; 14 15 class SkAnimCodecPlayer { 16 public: 17 SkAnimCodecPlayer(std::unique_ptr<SkCodec> codec); 18 ~SkAnimCodecPlayer(); 19 20 /** 21 * Returns the current frame of the animation. This defaults to the first frame for 22 * animated codecs (i.e. msec = 0). Calling this multiple times (without calling seek()) 23 * will always return the same image object (or null if there was an error). 24 */ 25 sk_sp<SkImage> getFrame(); 26 27 /** 28 * Return the size of the image(s) that will be returned by getFrame(). 29 */ 30 SkISize dimensions(); 31 32 /** 33 * Returns the total duration of the animation in milliseconds. Returns 0 for a single-frame 34 * image. 35 */ duration()36 uint32_t duration() { return fTotalDuration; } 37 38 /** 39 * Finds the closest frame associated with the time code (in milliseconds) and sets that 40 * to be the current frame (call getFrame() to retrieve that image). 41 * Returns true iff this call to seek() changed the "current frame" for the animation. 42 * Thus if seek() returns false, then getFrame() will return the same image as it did 43 * before this call to seek(). 44 */ 45 bool seek(uint32_t msec); 46 47 48 private: 49 std::unique_ptr<SkCodec> fCodec; 50 SkImageInfo fImageInfo; 51 std::vector<SkCodec::FrameInfo> fFrameInfos; 52 std::vector<sk_sp<SkImage> > fImages; 53 int fCurrIndex = 0; 54 uint32_t fTotalDuration; 55 56 sk_sp<SkImage> getFrameAt(int index); 57 }; 58 59 #endif 60 61