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