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/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkMovie.h"
#include "SkCanvas.h"
#include "SkPaint.h"
// We should never see this in normal operation since our time values are
// 0-based. So we use it as a sentinal.
#define UNINITIALIZED_MSEC ((SkMSec)-1)
SkMovie::SkMovie()
{
fInfo.fDuration = UNINITIALIZED_MSEC; // uninitialized
fCurrTime = UNINITIALIZED_MSEC; // uninitialized
fNeedBitmap = true;
}
void SkMovie::ensureInfo()
{
if (fInfo.fDuration == UNINITIALIZED_MSEC && !this->onGetInfo(&fInfo))
memset(&fInfo, 0, sizeof(fInfo)); // failure
}
SkMSec SkMovie::duration()
{
this->ensureInfo();
return fInfo.fDuration;
}
int SkMovie::width()
{
this->ensureInfo();
return fInfo.fWidth;
}
int SkMovie::height()
{
this->ensureInfo();
return fInfo.fHeight;
}
int SkMovie::isOpaque()
{
this->ensureInfo();
return fInfo.fIsOpaque;
}
bool SkMovie::setTime(SkMSec time)
{
SkMSec dur = this->duration();
if (time > dur)
time = dur;
bool changed = false;
if (time != fCurrTime)
{
fCurrTime = time;
changed = this->onSetTime(time);
fNeedBitmap |= changed;
}
return changed;
}
const SkBitmap& SkMovie::bitmap()
{
if (fCurrTime == UNINITIALIZED_MSEC) // uninitialized
this->setTime(0);
if (fNeedBitmap)
{
if (!this->onGetBitmap(&fBitmap)) // failure
fBitmap.reset();
fNeedBitmap = false;
}
return fBitmap;
}
////////////////////////////////////////////////////////////////////
#include "SkStream.h"
SkMovie* SkMovie::DecodeMemory(const void* data, size_t length) {
SkMemoryStream stream(data, length, false);
return SkMovie::DecodeStream(&stream);
}
SkMovie* SkMovie::DecodeFile(const char path[]) {
SkAutoTUnref<SkStreamRewindable> stream(SkStream::NewFromFile(path));
return stream.get() ? SkMovie::DecodeStream(stream) : NULL;
}
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