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/*
* Copyright (C) 2008 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 SkMovie_DEFINED
#define SkMovie_DEFINED
#include "SkRefCnt.h"
#include "SkCanvas.h"
class SkStream;
class SkMovie : public SkRefCnt {
public:
/** Try to create a movie from the stream. If the stream format is not
supported, return NULL.
*/
static SkMovie* DecodeStream(SkStream*);
/** Try to create a movie from the specified file path. If the file is not
found, or the format is not supported, return NULL. If a movie is
returned, the stream may be retained by the movie (via ref()) until
the movie is finished with it (by calling unref()).
*/
static SkMovie* DecodeFile(const char path[]);
/** Try to create a movie from the specified memory.
If the format is not supported, return NULL. If a movie is returned,
the data will have been read or copied, and so the caller may free
it.
*/
static SkMovie* DecodeMemory(const void* data, size_t length);
SkMSec duration();
int width();
int height();
int isOpaque();
/** Specify the time code (between 0...duration) to sample a bitmap
from the movie. Returns true if this time code generated a different
bitmap/frame from the previous state (i.e. true means you need to
redraw).
*/
bool setTime(SkMSec);
// return the right bitmap for the current time code
const SkBitmap& bitmap();
protected:
struct Info {
SkMSec fDuration;
int fWidth;
int fHeight;
bool fIsOpaque;
};
virtual bool onGetInfo(Info*) = 0;
virtual bool onSetTime(SkMSec) = 0;
virtual bool onGetBitmap(SkBitmap*) = 0;
// visible for subclasses
SkMovie();
private:
Info fInfo;
SkMSec fCurrTime;
SkBitmap fBitmap;
bool fNeedBitmap;
void ensureInfo();
};
#endif
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