The Tor Browser / file comparison
comparison: image/src/FrameSequence.cpp
image/src/FrameSequence.cpp
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:bf44b569e0fa |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- | |
| 2 * This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 #include "FrameSequence.h" | |
| 7 | |
| 8 using namespace mozilla; | |
| 9 using namespace mozilla::image; | |
| 10 | |
| 11 namespace mozilla { | |
| 12 namespace image { | |
| 13 | |
| 14 FrameSequence::~FrameSequence() | |
| 15 { | |
| 16 ClearFrames(); | |
| 17 } | |
| 18 | |
| 19 const FrameDataPair& | |
| 20 FrameSequence::GetFrame(uint32_t framenum) const | |
| 21 { | |
| 22 if (framenum >= mFrames.Length()) { | |
| 23 static FrameDataPair empty; | |
| 24 return empty; | |
| 25 } | |
| 26 | |
| 27 return mFrames[framenum]; | |
| 28 } | |
| 29 | |
| 30 uint32_t | |
| 31 FrameSequence::GetNumFrames() const | |
| 32 { | |
| 33 return mFrames.Length(); | |
| 34 } | |
| 35 | |
| 36 void | |
| 37 FrameSequence::RemoveFrame(uint32_t framenum) | |
| 38 { | |
| 39 NS_ABORT_IF_FALSE(framenum < mFrames.Length(), "Deleting invalid frame!"); | |
| 40 | |
| 41 mFrames.RemoveElementAt(framenum); | |
| 42 } | |
| 43 | |
| 44 void | |
| 45 FrameSequence::ClearFrames() | |
| 46 { | |
| 47 // Since FrameDataPair holds an nsAutoPtr to its frame, clearing the mFrames | |
| 48 // array also deletes all the frames. | |
| 49 mFrames.Clear(); | |
| 50 } | |
| 51 | |
| 52 void | |
| 53 FrameSequence::InsertFrame(uint32_t framenum, imgFrame* aFrame) | |
| 54 { | |
| 55 NS_ABORT_IF_FALSE(framenum <= mFrames.Length(), "Inserting invalid frame!"); | |
| 56 mFrames.InsertElementAt(framenum, aFrame); | |
| 57 if (GetNumFrames() > 1) { | |
| 58 // If we're creating our second element, we now know we're animated. | |
| 59 // Therefore, we need to lock the first frame too. | |
| 60 if (GetNumFrames() == 2) { | |
| 61 mFrames[0].LockAndGetData(); | |
| 62 } | |
| 63 | |
| 64 // Whenever we have more than one frame, we always lock *all* our frames | |
| 65 // so we have all the image data pointers. | |
| 66 mFrames[framenum].LockAndGetData(); | |
| 67 } | |
| 68 } | |
| 69 | |
| 70 imgFrame* | |
| 71 FrameSequence::SwapFrame(uint32_t framenum, imgFrame* aFrame) | |
| 72 { | |
| 73 NS_ABORT_IF_FALSE(framenum < mFrames.Length(), "Swapping invalid frame!"); | |
| 74 | |
| 75 FrameDataPair ret; | |
| 76 | |
| 77 // Steal the imgFrame. | |
| 78 if (framenum < mFrames.Length()) { | |
| 79 ret = mFrames[framenum]; | |
| 80 } | |
| 81 | |
| 82 if (aFrame) { | |
| 83 mFrames.ReplaceElementAt(framenum, aFrame); | |
| 84 } else { | |
| 85 mFrames.RemoveElementAt(framenum); | |
| 86 } | |
| 87 | |
| 88 return ret.Forget(); | |
| 89 } | |
| 90 | |
| 91 size_t | |
| 92 FrameSequence::SizeOfDecodedWithComputedFallbackIfHeap(gfxMemoryLocation aLocation, | |
| 93 MallocSizeOf aMallocSizeOf) const | |
| 94 { | |
| 95 size_t n = 0; | |
| 96 for (uint32_t i = 0; i < mFrames.Length(); ++i) { | |
| 97 imgFrame* frame = mFrames.SafeElementAt(i, FrameDataPair()); | |
| 98 NS_ABORT_IF_FALSE(frame, "Null frame in frame array!"); | |
| 99 n += frame->SizeOfExcludingThisWithComputedFallbackIfHeap(aLocation, aMallocSizeOf); | |
| 100 } | |
| 101 | |
| 102 return n; | |
| 103 } | |
| 104 | |
| 105 } // namespace image | |
| 106 } // namespace mozilla |
