| |
| /* |
| * 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; |
| } |