michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "FrameSequence.h"
michael@0: 
michael@0: using namespace mozilla;
michael@0: using namespace mozilla::image;
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace image {
michael@0: 
michael@0: FrameSequence::~FrameSequence()
michael@0: {
michael@0:   ClearFrames();
michael@0: }
michael@0: 
michael@0: const FrameDataPair&
michael@0: FrameSequence::GetFrame(uint32_t framenum) const
michael@0: {
michael@0:   if (framenum >= mFrames.Length()) {
michael@0:     static FrameDataPair empty;
michael@0:     return empty;
michael@0:   }
michael@0: 
michael@0:   return mFrames[framenum];
michael@0: }
michael@0: 
michael@0: uint32_t
michael@0: FrameSequence::GetNumFrames() const
michael@0: {
michael@0:   return mFrames.Length();
michael@0: }
michael@0: 
michael@0: void
michael@0: FrameSequence::RemoveFrame(uint32_t framenum)
michael@0: {
michael@0:   NS_ABORT_IF_FALSE(framenum < mFrames.Length(), "Deleting invalid frame!");
michael@0: 
michael@0:   mFrames.RemoveElementAt(framenum);
michael@0: }
michael@0: 
michael@0: void
michael@0: FrameSequence::ClearFrames()
michael@0: {
michael@0:   // Since FrameDataPair holds an nsAutoPtr to its frame, clearing the mFrames
michael@0:   // array also deletes all the frames.
michael@0:   mFrames.Clear();
michael@0: }
michael@0: 
michael@0: void
michael@0: FrameSequence::InsertFrame(uint32_t framenum, imgFrame* aFrame)
michael@0: {
michael@0:   NS_ABORT_IF_FALSE(framenum <= mFrames.Length(), "Inserting invalid frame!");
michael@0:   mFrames.InsertElementAt(framenum, aFrame);
michael@0:   if (GetNumFrames() > 1) {
michael@0:     // If we're creating our second element, we now know we're animated.
michael@0:     // Therefore, we need to lock the first frame too.
michael@0:     if (GetNumFrames() == 2) {
michael@0:       mFrames[0].LockAndGetData();
michael@0:     }
michael@0: 
michael@0:     // Whenever we have more than one frame, we always lock *all* our frames
michael@0:     // so we have all the image data pointers.
michael@0:     mFrames[framenum].LockAndGetData();
michael@0:   }
michael@0: }
michael@0: 
michael@0: imgFrame*
michael@0: FrameSequence::SwapFrame(uint32_t framenum, imgFrame* aFrame)
michael@0: {
michael@0:   NS_ABORT_IF_FALSE(framenum < mFrames.Length(), "Swapping invalid frame!");
michael@0: 
michael@0:   FrameDataPair ret;
michael@0: 
michael@0:   // Steal the imgFrame.
michael@0:   if (framenum < mFrames.Length()) {
michael@0:     ret = mFrames[framenum];
michael@0:   }
michael@0: 
michael@0:   if (aFrame) {
michael@0:     mFrames.ReplaceElementAt(framenum, aFrame);
michael@0:   } else {
michael@0:     mFrames.RemoveElementAt(framenum);
michael@0:   }
michael@0: 
michael@0:   return ret.Forget();
michael@0: }
michael@0: 
michael@0: size_t
michael@0: FrameSequence::SizeOfDecodedWithComputedFallbackIfHeap(gfxMemoryLocation aLocation,
michael@0:                                                        MallocSizeOf aMallocSizeOf) const
michael@0: {
michael@0:   size_t n = 0;
michael@0:   for (uint32_t i = 0; i < mFrames.Length(); ++i) {
michael@0:     imgFrame* frame = mFrames.SafeElementAt(i, FrameDataPair());
michael@0:     NS_ABORT_IF_FALSE(frame, "Null frame in frame array!");
michael@0:     n += frame->SizeOfExcludingThisWithComputedFallbackIfHeap(aLocation, aMallocSizeOf);
michael@0:   }
michael@0: 
michael@0:   return n;
michael@0: }
michael@0: 
michael@0: } // namespace image
michael@0: } // namespace mozilla