The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/image/src/FrameSequence.cpp	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,106 @@
     1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
     1.5 + * This Source Code Form is subject to the terms of the Mozilla Public
     1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
     1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
     1.8 +
     1.9 +#include "FrameSequence.h"
    1.10 +
    1.11 +using namespace mozilla;
    1.12 +using namespace mozilla::image;
    1.13 +
    1.14 +namespace mozilla {
    1.15 +namespace image {
    1.16 +
    1.17 +FrameSequence::~FrameSequence()
    1.18 +{
    1.19 +  ClearFrames();
    1.20 +}
    1.21 +
    1.22 +const FrameDataPair&
    1.23 +FrameSequence::GetFrame(uint32_t framenum) const
    1.24 +{
    1.25 +  if (framenum >= mFrames.Length()) {
    1.26 +    static FrameDataPair empty;
    1.27 +    return empty;
    1.28 +  }
    1.29 +
    1.30 +  return mFrames[framenum];
    1.31 +}
    1.32 +
    1.33 +uint32_t
    1.34 +FrameSequence::GetNumFrames() const
    1.35 +{
    1.36 +  return mFrames.Length();
    1.37 +}
    1.38 +
    1.39 +void
    1.40 +FrameSequence::RemoveFrame(uint32_t framenum)
    1.41 +{
    1.42 +  NS_ABORT_IF_FALSE(framenum < mFrames.Length(), "Deleting invalid frame!");
    1.43 +
    1.44 +  mFrames.RemoveElementAt(framenum);
    1.45 +}
    1.46 +
    1.47 +void
    1.48 +FrameSequence::ClearFrames()
    1.49 +{
    1.50 +  // Since FrameDataPair holds an nsAutoPtr to its frame, clearing the mFrames
    1.51 +  // array also deletes all the frames.
    1.52 +  mFrames.Clear();
    1.53 +}
    1.54 +
    1.55 +void
    1.56 +FrameSequence::InsertFrame(uint32_t framenum, imgFrame* aFrame)
    1.57 +{
    1.58 +  NS_ABORT_IF_FALSE(framenum <= mFrames.Length(), "Inserting invalid frame!");
    1.59 +  mFrames.InsertElementAt(framenum, aFrame);
    1.60 +  if (GetNumFrames() > 1) {
    1.61 +    // If we're creating our second element, we now know we're animated.
    1.62 +    // Therefore, we need to lock the first frame too.
    1.63 +    if (GetNumFrames() == 2) {
    1.64 +      mFrames[0].LockAndGetData();
    1.65 +    }
    1.66 +
    1.67 +    // Whenever we have more than one frame, we always lock *all* our frames
    1.68 +    // so we have all the image data pointers.
    1.69 +    mFrames[framenum].LockAndGetData();
    1.70 +  }
    1.71 +}
    1.72 +
    1.73 +imgFrame*
    1.74 +FrameSequence::SwapFrame(uint32_t framenum, imgFrame* aFrame)
    1.75 +{
    1.76 +  NS_ABORT_IF_FALSE(framenum < mFrames.Length(), "Swapping invalid frame!");
    1.77 +
    1.78 +  FrameDataPair ret;
    1.79 +
    1.80 +  // Steal the imgFrame.
    1.81 +  if (framenum < mFrames.Length()) {
    1.82 +    ret = mFrames[framenum];
    1.83 +  }
    1.84 +
    1.85 +  if (aFrame) {
    1.86 +    mFrames.ReplaceElementAt(framenum, aFrame);
    1.87 +  } else {
    1.88 +    mFrames.RemoveElementAt(framenum);
    1.89 +  }
    1.90 +
    1.91 +  return ret.Forget();
    1.92 +}
    1.93 +
    1.94 +size_t
    1.95 +FrameSequence::SizeOfDecodedWithComputedFallbackIfHeap(gfxMemoryLocation aLocation,
    1.96 +                                                       MallocSizeOf aMallocSizeOf) const
    1.97 +{
    1.98 +  size_t n = 0;
    1.99 +  for (uint32_t i = 0; i < mFrames.Length(); ++i) {
   1.100 +    imgFrame* frame = mFrames.SafeElementAt(i, FrameDataPair());
   1.101 +    NS_ABORT_IF_FALSE(frame, "Null frame in frame array!");
   1.102 +    n += frame->SizeOfExcludingThisWithComputedFallbackIfHeap(aLocation, aMallocSizeOf);
   1.103 +  }
   1.104 +
   1.105 +  return n;
   1.106 +}
   1.107 +
   1.108 +} // namespace image
   1.109 +} // namespace mozilla