95 lines
2.0 KiB
C++
95 lines
2.0 KiB
C++
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/*
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* Copyright 2011 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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#include "Movie.h"
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#include "SkCanvas.h"
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#include "SkPaint.h"
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// We should never see this in normal operation since our time values are
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// 0-based. So we use it as a sentinal.
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#define UNINITIALIZED_MSEC ((SkMSec)-1)
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Movie::Movie()
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{
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fInfo.fDuration = UNINITIALIZED_MSEC; // uninitialized
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fCurrTime = UNINITIALIZED_MSEC; // uninitialized
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fNeedBitmap = true;
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}
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void Movie::ensureInfo()
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{
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if (fInfo.fDuration == UNINITIALIZED_MSEC && !this->onGetInfo(&fInfo))
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memset(&fInfo, 0, sizeof(fInfo)); // failure
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}
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SkMSec Movie::duration()
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{
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this->ensureInfo();
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return fInfo.fDuration;
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}
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int Movie::width()
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{
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this->ensureInfo();
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return fInfo.fWidth;
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}
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int Movie::height()
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{
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this->ensureInfo();
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return fInfo.fHeight;
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}
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int Movie::isOpaque()
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{
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this->ensureInfo();
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return fInfo.fIsOpaque;
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}
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bool Movie::setTime(SkMSec time)
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{
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SkMSec dur = this->duration();
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if (time > dur)
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time = dur;
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bool changed = false;
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if (time != fCurrTime)
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{
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fCurrTime = time;
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changed = this->onSetTime(time);
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fNeedBitmap |= changed;
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}
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return changed;
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}
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const SkBitmap& Movie::bitmap()
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{
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if (fCurrTime == UNINITIALIZED_MSEC) // uninitialized
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this->setTime(0);
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if (fNeedBitmap)
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{
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if (!this->onGetBitmap(&fBitmap)) // failure
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fBitmap.reset();
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fNeedBitmap = false;
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}
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return fBitmap;
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}
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////////////////////////////////////////////////////////////////////
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#include "SkStream.h"
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Movie* Movie::DecodeMemory(const void* data, size_t length) {
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SkMemoryStream stream(data, length, false);
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return Movie::DecodeStream(&stream);
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}
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Movie* Movie::DecodeFile(const char path[]) {
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std::unique_ptr<SkStreamRewindable> stream = SkStream::MakeFromFile(path);
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return stream ? Movie::DecodeStream(stream.get()) : nullptr;
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}
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