b5571b3324
Only affects factories, static functions that will use the factories, and subset decoding, which all require rewinding. The decoders themselves continue to take an SkStream. This is merely documentation stating which functions will possibly rewind the passed in SkStream. This is part of the general change to coordinate SkStreams with Android's streams, which don't necessarily support rewinding in all cases. Update callers to use SkStreamRewindable. BUG=skia:1572 R=bungeman@google.com, reed@google.com Review URL: https://codereview.chromium.org/23477009 git-svn-id: http://skia.googlecode.com/svn/trunk@11460 2bbb7eff-a529-9590-31e7-b0007b416f81
81 lines
2.1 KiB
C++
81 lines
2.1 KiB
C++
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/*
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* Copyright 2008 The Android Open Source Project
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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 SkMovie_DEFINED
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#define SkMovie_DEFINED
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#include "SkRefCnt.h"
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#include "SkCanvas.h"
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class SkStreamRewindable;
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class SkMovie : public SkRefCnt {
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public:
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SK_DECLARE_INST_COUNT(SkMovie)
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/** Try to create a movie from the stream. If the stream format is not
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supported, return NULL.
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*/
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static SkMovie* DecodeStream(SkStreamRewindable*);
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/** Try to create a movie from the specified file path. If the file is not
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found, or the format is not supported, return NULL. If a movie is
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returned, the stream may be retained by the movie (via ref()) until
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the movie is finished with it (by calling unref()).
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*/
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static SkMovie* DecodeFile(const char path[]);
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/** Try to create a movie from the specified memory.
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If the format is not supported, return NULL. If a movie is returned,
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the data will have been read or copied, and so the caller may free
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it.
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*/
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static SkMovie* DecodeMemory(const void* data, size_t length);
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SkMSec duration();
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int width();
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int height();
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int isOpaque();
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/** Specify the time code (between 0...duration) to sample a bitmap
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from the movie. Returns true if this time code generated a different
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bitmap/frame from the previous state (i.e. true means you need to
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redraw).
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*/
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bool setTime(SkMSec);
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// return the right bitmap for the current time code
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const SkBitmap& bitmap();
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protected:
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struct Info {
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SkMSec fDuration;
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int fWidth;
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int fHeight;
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bool fIsOpaque;
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};
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virtual bool onGetInfo(Info*) = 0;
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virtual bool onSetTime(SkMSec) = 0;
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virtual bool onGetBitmap(SkBitmap*) = 0;
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// visible for subclasses
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SkMovie();
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private:
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Info fInfo;
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SkMSec fCurrTime;
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SkBitmap fBitmap;
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bool fNeedBitmap;
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void ensureInfo();
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typedef SkRefCnt INHERITED;
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};
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#endif
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