зеркало из https://github.com/mozilla/pjs.git
305 строки
8.7 KiB
C++
305 строки
8.7 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=2 sw=2 sts=2 et cindent: */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: ML 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla code.
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*
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* The Initial Developer of the Original Code is the Mozilla Corporation.
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* Portions created by the Initial Developer are Copyright (C) 2007
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Chris Double <chris.double@double.co.nz>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "prlog.h"
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#include "prmem.h"
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#include "nsIFrame.h"
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#include "nsIDocument.h"
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#include "nsThreadUtils.h"
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#include "nsIDOMHTMLMediaElement.h"
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#include "nsNetUtil.h"
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#include "nsHTMLMediaElement.h"
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#include "nsIObserver.h"
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#include "nsIObserverService.h"
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#include "nsAutoLock.h"
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#include "nsIRenderingContext.h"
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#include "gfxContext.h"
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#include "gfxImageSurface.h"
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#include "nsPresContext.h"
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#include "nsMediaDecoder.h"
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#include "nsDOMError.h"
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// Number of milliseconds between progress events as defined by spec
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#define PROGRESS_MS 350
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// Number of milliseconds of no data before a stall event is fired as defined by spec
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#define STALL_MS 3000
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#ifdef PR_LOGGING
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// Logging object for decoder
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PRLogModuleInfo* gVideoDecoderLog = nsnull;
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#endif
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nsMediaDecoder::nsMediaDecoder() :
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mElement(0),
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mRGBWidth(-1),
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mRGBHeight(-1),
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mProgressTime(),
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mDataTime(),
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mVideoUpdateLock(nsnull),
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mFramerate(0.0),
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mAspectRatio(1.0),
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mSizeChanged(PR_FALSE),
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mShuttingDown(PR_FALSE)
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{
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MOZ_COUNT_CTOR(nsMediaDecoder);
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}
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nsMediaDecoder::~nsMediaDecoder()
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{
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if (mVideoUpdateLock) {
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PR_DestroyLock(mVideoUpdateLock);
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mVideoUpdateLock = nsnull;
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}
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MOZ_COUNT_DTOR(nsMediaDecoder);
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}
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PRBool nsMediaDecoder::Init(nsHTMLMediaElement* aElement)
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{
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mElement = aElement;
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mVideoUpdateLock = PR_NewLock();
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return mVideoUpdateLock != nsnull;
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}
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void nsMediaDecoder::Shutdown()
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{
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StopProgress();
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mElement = nsnull;
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}
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nsHTMLMediaElement* nsMediaDecoder::GetMediaElement()
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{
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return mElement;
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}
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nsresult nsMediaDecoder::InitLogger()
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{
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#ifdef PR_LOGGING
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gVideoDecoderLog = PR_NewLogModule("nsMediaDecoder");
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#endif
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return NS_OK;
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}
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static PRInt32 ConditionDimension(float aValue, PRInt32 aDefault)
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{
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// This will exclude NaNs and infinities
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if (aValue >= 1.0 && aValue <= 10000.0)
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return PRInt32(NS_round(aValue));
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return aDefault;
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}
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void nsMediaDecoder::Invalidate()
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{
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if (!mElement)
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return;
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nsIFrame* frame = mElement->GetPrimaryFrame();
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{
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nsAutoLock lock(mVideoUpdateLock);
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if (mSizeChanged) {
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nsIntSize scaledSize(mRGBWidth, mRGBHeight);
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// Apply the aspect ratio to produce the intrinsic size we report
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// to the element.
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if (mAspectRatio > 1.0) {
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// Increase the intrinsic width
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scaledSize.width =
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ConditionDimension(mAspectRatio*scaledSize.width, scaledSize.width);
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} else {
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// Increase the intrinsic height
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scaledSize.height =
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ConditionDimension(scaledSize.height/mAspectRatio, scaledSize.height);
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}
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mElement->UpdateMediaSize(scaledSize);
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mSizeChanged = PR_FALSE;
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if (frame) {
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nsPresContext* presContext = frame->PresContext();
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nsIPresShell *presShell = presContext->PresShell();
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presShell->FrameNeedsReflow(frame,
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nsIPresShell::eStyleChange,
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NS_FRAME_IS_DIRTY);
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}
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}
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}
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if (frame) {
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nsRect r(nsPoint(0,0), frame->GetSize());
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frame->Invalidate(r);
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}
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}
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static void ProgressCallback(nsITimer* aTimer, void* aClosure)
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{
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nsMediaDecoder* decoder = static_cast<nsMediaDecoder*>(aClosure);
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decoder->Progress(PR_TRUE);
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}
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void nsMediaDecoder::Progress(PRBool aTimer)
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{
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if (!mElement)
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return;
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TimeStamp now = TimeStamp::Now();
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if (!aTimer) {
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mDataTime = now;
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}
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// If PROGRESS_MS has passed since the last progress event fired and more
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// data has arrived since then, fire another progress event.
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if ((mProgressTime.IsNull() ||
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now - mProgressTime >= TimeDuration::FromMilliseconds(PROGRESS_MS)) &&
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!mDataTime.IsNull() &&
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now - mDataTime <= TimeDuration::FromMilliseconds(PROGRESS_MS)) {
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mElement->DispatchAsyncProgressEvent(NS_LITERAL_STRING("progress"));
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mProgressTime = now;
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}
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if (!mDataTime.IsNull() &&
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now - mDataTime >= TimeDuration::FromMilliseconds(STALL_MS)) {
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mElement->DownloadStalled();
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// Null it out
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mDataTime = TimeStamp();
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}
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}
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nsresult nsMediaDecoder::StartProgress()
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{
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if (mProgressTimer)
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return NS_OK;
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mProgressTimer = do_CreateInstance("@mozilla.org/timer;1");
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return mProgressTimer->InitWithFuncCallback(ProgressCallback,
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this,
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PROGRESS_MS,
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nsITimer::TYPE_REPEATING_SLACK);
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}
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nsresult nsMediaDecoder::StopProgress()
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{
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if (!mProgressTimer)
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return NS_OK;
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nsresult rv = mProgressTimer->Cancel();
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mProgressTimer = nsnull;
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return rv;
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}
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void nsMediaDecoder::SetRGBData(PRInt32 aWidth, PRInt32 aHeight, float aFramerate,
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float aAspectRatio, unsigned char* aRGBBuffer)
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{
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nsAutoLock lock(mVideoUpdateLock);
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if (mRGBWidth != aWidth || mRGBHeight != aHeight ||
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mAspectRatio != aAspectRatio) {
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mRGBWidth = aWidth;
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mRGBHeight = aHeight;
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mAspectRatio = aAspectRatio;
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mSizeChanged = PR_TRUE;
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}
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mFramerate = aFramerate;
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mRGB = aRGBBuffer;
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}
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void nsMediaDecoder::Paint(gfxContext* aContext,
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gfxPattern::GraphicsFilter aFilter,
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const gfxRect& aRect)
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{
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nsAutoLock lock(mVideoUpdateLock);
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if (!mRGB)
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return;
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/* Create a surface backed by the RGB */
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nsRefPtr<gfxASurface> surface =
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new gfxImageSurface(mRGB,
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gfxIntSize(mRGBWidth, mRGBHeight),
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mRGBWidth * 4,
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gfxASurface::ImageFormatRGB24);
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if (!surface)
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return;
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nsRefPtr<gfxPattern> pat = new gfxPattern(surface);
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if (!pat)
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return;
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// Make the source image fill the rectangle completely
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pat->SetMatrix(gfxMatrix().Scale(mRGBWidth/aRect.Width(), mRGBHeight/aRect.Height()));
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pat->SetFilter(aFilter);
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// Set PAD mode so that when the video is being scaled, we do not sample
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// outside the bounds of the video image.
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gfxPattern::GraphicsExtend extend = gfxPattern::EXTEND_PAD;
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// PAD is slow with X11 and Quartz surfaces, so prefer speed over correctness
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// and use NONE.
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nsRefPtr<gfxASurface> target = aContext->CurrentSurface();
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gfxASurface::gfxSurfaceType type = target->GetType();
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if (type == gfxASurface::SurfaceTypeXlib ||
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type == gfxASurface::SurfaceTypeXcb ||
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type == gfxASurface::SurfaceTypeQuartz) {
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extend = gfxPattern::EXTEND_NONE;
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}
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pat->SetExtend(extend);
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/* Draw RGB surface onto frame */
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aContext->NewPath();
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aContext->PixelSnappedRectangleAndSetPattern(aRect, pat);
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aContext->Fill();
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#ifdef DEBUG_FRAME_RATE
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{
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// Output frame rate
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static float last = double(PR_IntervalToMilliseconds(PR_IntervalNow()))/1000.0;
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float now = double(PR_IntervalToMilliseconds(PR_IntervalNow()))/1000.0;
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static int count = 0;
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count++;
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if (now-last > 10.0) {
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LOG(PR_LOG_DEBUG, ("Paint Frame Rate = %f (should be %f)\n", (float)count / (float)(now-last), mFramerate));
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count = 0;
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last = double(PR_IntervalToMilliseconds(PR_IntervalNow()))/1000.0;
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}
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}
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#endif
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}
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