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bug 296818. discard uncompressed image data after a period of time. original patch from Federico Mena-Quintero <federico@ximian.com>. Changes from me. r=vlad

This commit is contained in:
pavlov@pavlov.net 2007-10-18 17:36:34 -07:00
Родитель 137c086687
Коммит d070896f7a
6 изменённых файлов: 815 добавлений и 69 удалений
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169
modules/libpr0n/decoders/jpeg/nsJPEGDecoder.cpp
Просмотреть файл

@ -22,6 +22,7 @@
*
* Contributor(s):
* Stuart Parmenter <stuart@mozilla.com>
* Federico Mena-Quintero <federico@novell.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
@ -63,8 +64,10 @@ NS_IMPL_ISUPPORTS1(nsJPEGDecoder, imgIDecoder)
#if defined(PR_LOGGING)
PRLogModuleInfo *gJPEGlog = PR_NewLogModule("JPEGDecoder");
static PRLogModuleInfo *gJPEGDecoderAccountingLog = PR_NewLogModule("JPEGDecoderAccounting");
#else
#define gJPEGlog
#define gJPEGDecoderAccountingLog
#endif
@ -96,6 +99,10 @@ nsJPEGDecoder::nsJPEGDecoder()
mInProfile = nsnull;
mTransform = nsnull;
PR_LOG(gJPEGDecoderAccountingLog, PR_LOG_DEBUG,
("nsJPEGDecoder::nsJPEGDecoder: Creating JPEG decoder %p",
this));
}
nsJPEGDecoder::~nsJPEGDecoder()
@ -106,6 +113,10 @@ nsJPEGDecoder::~nsJPEGDecoder()
cmsDeleteTransform(mTransform);
if (mInProfile)
cmsCloseProfile(mInProfile);
PR_LOG(gJPEGDecoderAccountingLog, PR_LOG_DEBUG,
("nsJPEGDecoder::~nsJPEGDecoder: Destroying JPEG decoder %p",
this));
}
@ -147,6 +158,34 @@ NS_IMETHODIMP nsJPEGDecoder::Init(imgILoad *aLoad)
for (PRUint32 m = 0; m < 16; m++)
jpeg_save_markers(&mInfo, JPEG_APP0 + m, 0xFFFF);
/* Check if the request already has an image container.
* this is the case when multipart/x-mixed-replace is being downloaded
* if we already have one and it has the same width and height, reuse it.
* This is also the case when an existing container is reloading itself from
* us.
*
* If we have a mismatch in width/height for the container later on we will
* generate an error.
*/
mImageLoad->GetImage(getter_AddRefs(mImage));
if (!mImage) {
mImage = do_CreateInstance("@mozilla.org/image/container;1");
if (!mImage)
return NS_ERROR_OUT_OF_MEMORY;
mImageLoad->SetImage(mImage);
nsresult result = mImage->SetDiscardable("image/jpeg");
if (NS_FAILED(result)) {
mState = JPEG_ERROR;
PR_LOG(gJPEGDecoderAccountingLog, PR_LOG_DEBUG,
(" (could not set image container to discardable)"));
return result;
}
}
return NS_OK;
}
@ -185,11 +224,20 @@ NS_IMETHODIMP nsJPEGDecoder::WriteFrom(nsIInputStream *inStr, PRUint32 count, PR
{
LOG_SCOPE_WITH_PARAM(gJPEGlog, "nsJPEGDecoder::WriteFrom", "count", count);
PR_LOG(gJPEGDecoderAccountingLog, PR_LOG_DEBUG,
("nsJPEGDecoder::WriteFrom(decoder = %p) {\n"
" image container %s; %u bytes to be added",
this,
mImage ? "exists" : "does not exist",
count));
if (inStr) {
if (!mBuffer) {
mBuffer = (JOCTET *)PR_Malloc(count);
if (!mBuffer) {
mState = JPEG_ERROR;
PR_LOG(gJPEGDecoderAccountingLog, PR_LOG_DEBUG,
("} (out of memory allocating buffer)"));
return NS_ERROR_OUT_OF_MEMORY;
}
mBufferSize = count;
@ -197,6 +245,8 @@ NS_IMETHODIMP nsJPEGDecoder::WriteFrom(nsIInputStream *inStr, PRUint32 count, PR
JOCTET *buf = (JOCTET *)PR_Realloc(mBuffer, count);
if (!buf) {
mState = JPEG_ERROR;
PR_LOG(gJPEGDecoderAccountingLog, PR_LOG_DEBUG,
("} (out of memory resizing buffer)"));
return NS_ERROR_OUT_OF_MEMORY;
}
mBuffer = buf;
@ -204,9 +254,29 @@ NS_IMETHODIMP nsJPEGDecoder::WriteFrom(nsIInputStream *inStr, PRUint32 count, PR
}
nsresult rv = inStr->Read((char*)mBuffer, count, &mBufferLen);
NS_ASSERTION(NS_SUCCEEDED(rv), "nsJPEGDecoder::WriteFrom -- inStr->Read failed");
PR_LOG(gJPEGDecoderAccountingLog, PR_LOG_DEBUG,
("nsJPEGDecoder::WriteFrom(): decoder %p got %u bytes, read %u from the stream (buffer size %u)",
this,
count,
mBufferLen,
mBufferSize));
*_retval = mBufferLen;
NS_ASSERTION(NS_SUCCEEDED(rv), "nsJPEGDecoder::WriteFrom -- inStr->Read failed");
nsresult result = mImage->AddRestoreData((char *) mBuffer, count);
if (NS_FAILED(result)) {
mState = JPEG_ERROR;
PR_LOG(gJPEGDecoderAccountingLog, PR_LOG_DEBUG,
("} (could not add restore data)"));
return result;
}
PR_LOG(gJPEGDecoderAccountingLog, PR_LOG_DEBUG,
(" added %u bytes to restore data",
count));
}
// else no input stream.. Flush() ?
@ -217,11 +287,15 @@ NS_IMETHODIMP nsJPEGDecoder::WriteFrom(nsIInputStream *inStr, PRUint32 count, PR
if (error_code == NS_ERROR_FAILURE) {
/* Error due to corrupt stream - return NS_OK so that libpr0n
doesn't throw away a partial image load */
PR_LOG(gJPEGDecoderAccountingLog, PR_LOG_DEBUG,
("} (setjmp returned NS_ERROR_FAILURE)"));
return NS_OK;
} else {
/* Error due to reasons external to the stream (probably out of
memory) - let libpr0n attempt to clean up, even though
mozilla is seconds away from falling flat on its face. */
PR_LOG(gJPEGDecoderAccountingLog, PR_LOG_DEBUG,
("} (setjmp returned an error)"));
return error_code;
}
}
@ -235,8 +309,11 @@ NS_IMETHODIMP nsJPEGDecoder::WriteFrom(nsIInputStream *inStr, PRUint32 count, PR
LOG_SCOPE(gJPEGlog, "nsJPEGDecoder::WriteFrom -- entering JPEG_HEADER case");
/* Step 3: read file parameters with jpeg_read_header() */
if (jpeg_read_header(&mInfo, TRUE) == JPEG_SUSPENDED)
if (jpeg_read_header(&mInfo, TRUE) == JPEG_SUSPENDED) {
PR_LOG(gJPEGDecoderAccountingLog, PR_LOG_DEBUG,
("} (JPEG_SUSPENDED)"));
return NS_OK; /* I/O suspension */
}
JOCTET *profile;
PRUint32 profileLength;
@ -278,6 +355,8 @@ NS_IMETHODIMP nsJPEGDecoder::WriteFrom(nsIInputStream *inStr, PRUint32 count, PR
break;
default:
mState = JPEG_ERROR;
PR_LOG(gJPEGDecoderAccountingLog, PR_LOG_DEBUG,
("} (unknown colorpsace (1))"));
return NS_ERROR_UNEXPECTED;
}
@ -301,6 +380,8 @@ NS_IMETHODIMP nsJPEGDecoder::WriteFrom(nsIInputStream *inStr, PRUint32 count, PR
break;
default:
mState = JPEG_ERROR;
PR_LOG(gJPEGDecoderAccountingLog, PR_LOG_DEBUG,
("} (unknown colorpsace (2))"));
return NS_ERROR_UNEXPECTED;
}
@ -336,6 +417,8 @@ NS_IMETHODIMP nsJPEGDecoder::WriteFrom(nsIInputStream *inStr, PRUint32 count, PR
break;
default:
mState = JPEG_ERROR;
PR_LOG(gJPEGDecoderAccountingLog, PR_LOG_DEBUG,
("} (unknown colorpsace (3))"));
return NS_ERROR_UNEXPECTED;
break;
}
@ -352,30 +435,21 @@ NS_IMETHODIMP nsJPEGDecoder::WriteFrom(nsIInputStream *inStr, PRUint32 count, PR
mObserver->OnStartDecode(nsnull);
/* Check if the request already has an image container.
this is the case when multipart/x-mixed-replace is being downloaded
if we already have one and it has the same width and height, reuse it.
/* verify that the width and height of the image are the same as
* the container we're about to put things in to.
* XXX it might not matter maybe we should just resize the image.
*/
mImageLoad->GetImage(getter_AddRefs(mImage));
if (mImage) {
PRInt32 width, height;
mImage->GetWidth(&width);
mImage->GetHeight(&height);
if ((width != (PRInt32)mInfo.image_width) ||
(height != (PRInt32)mInfo.image_height)) {
mImage = nsnull;
}
PRInt32 width, height;
mImage->GetWidth(&width);
mImage->GetHeight(&height);
if (width == 0 && height == 0) {
mImage->Init(mInfo.image_width, mInfo.image_height, mObserver);
} else if ((width != (PRInt32)mInfo.image_width) || (height != (PRInt32)mInfo.image_height)) {
mState = JPEG_ERROR;
return NS_ERROR_UNEXPECTED;
}
if (!mImage) {
mImage = do_CreateInstance("@mozilla.org/image/container;1");
if (!mImage) {
mState = JPEG_ERROR;
return NS_ERROR_OUT_OF_MEMORY;
}
mImageLoad->SetImage(mImage);
mImage->Init(mInfo.image_width, mInfo.image_height, mObserver);
}
mImage->Init(mInfo.image_width, mInfo.image_height, mObserver);
mObserver->OnStartContainer(nsnull, mImage);
@ -400,6 +474,8 @@ NS_IMETHODIMP nsJPEGDecoder::WriteFrom(nsIInputStream *inStr, PRUint32 count, PR
mFrame = do_CreateInstance("@mozilla.org/gfx/image/frame;2");
if (!mFrame) {
mState = JPEG_ERROR;
PR_LOG(gJPEGDecoderAccountingLog, PR_LOG_DEBUG,
("} (could not create image frame)"));
return NS_ERROR_OUT_OF_MEMORY;
}
@ -410,11 +486,17 @@ NS_IMETHODIMP nsJPEGDecoder::WriteFrom(nsIInputStream *inStr, PRUint32 count, PR
if (NS_FAILED(mFrame->Init(0, 0, mInfo.image_width, mInfo.image_height, format, 24))) {
mState = JPEG_ERROR;
PR_LOG(gJPEGDecoderAccountingLog, PR_LOG_DEBUG,
("} (could not initialize image frame)"));
return NS_ERROR_OUT_OF_MEMORY;
}
mImage->AppendFrame(mFrame);
}
PR_LOG(gJPEGDecoderAccountingLog, PR_LOG_DEBUG,
(" JPEGDecoderAccounting: nsJPEGDecoder::WriteFrom -- created image frame with %ux%u pixels",
mInfo.image_width, mInfo.image_height));
}
mObserver->OnStartFrame(nsnull, mFrame);
mState = JPEG_START_DECOMPRESS;
@ -435,8 +517,11 @@ NS_IMETHODIMP nsJPEGDecoder::WriteFrom(nsIInputStream *inStr, PRUint32 count, PR
mInfo.do_block_smoothing = TRUE;
/* Step 5: Start decompressor */
if (jpeg_start_decompress(&mInfo) == FALSE)
if (jpeg_start_decompress(&mInfo) == FALSE) {
PR_LOG(gJPEGDecoderAccountingLog, PR_LOG_DEBUG,
("} (I/O suspension after jpeg_start_decompress())"));
return NS_OK; /* I/O suspension */
}
/* If this is a progressive JPEG ... */
if (mInfo.buffered_image) {
@ -452,8 +537,11 @@ NS_IMETHODIMP nsJPEGDecoder::WriteFrom(nsIInputStream *inStr, PRUint32 count, PR
{
LOG_SCOPE(gJPEGlog, "nsJPEGDecoder::WriteFrom -- JPEG_DECOMPRESS_SEQUENTIAL case");
if (!OutputScanlines())
if (!OutputScanlines()) {
PR_LOG(gJPEGDecoderAccountingLog, PR_LOG_DEBUG,
("} (I/O suspension after OutputScanlines() - SEQUENTIAL)"));
return NS_OK; /* I/O suspension */
}
/* If we've completed image output ... */
NS_ASSERTION(mInfo.output_scanline == mInfo.output_height, "We didn't process all of the data!");
@ -485,8 +573,11 @@ NS_IMETHODIMP nsJPEGDecoder::WriteFrom(nsIInputStream *inStr, PRUint32 count, PR
(status != JPEG_REACHED_EOI))
scan--;
if (!jpeg_start_output(&mInfo, scan))
if (!jpeg_start_output(&mInfo, scan)) {
PR_LOG(gJPEGDecoderAccountingLog, PR_LOG_DEBUG,
("} (I/O suspension after jpeg_start_output() - PROGRESSIVE)"));
return NS_OK; /* I/O suspension */
}
}
if (mInfo.output_scanline == 0xffffff)
@ -498,13 +589,18 @@ NS_IMETHODIMP nsJPEGDecoder::WriteFrom(nsIInputStream *inStr, PRUint32 count, PR
jpeg_start_output() multiple times for the same scan */
mInfo.output_scanline = 0xffffff;
}
PR_LOG(gJPEGDecoderAccountingLog, PR_LOG_DEBUG,
("} (I/O suspension after OutputScanlines() - PROGRESSIVE)"));
return NS_OK; /* I/O suspension */
}
if (mInfo.output_scanline == mInfo.output_height)
{
if (!jpeg_finish_output(&mInfo))
if (!jpeg_finish_output(&mInfo)) {
PR_LOG(gJPEGDecoderAccountingLog, PR_LOG_DEBUG,
("} (I/O suspension after jpeg_finish_output() - PROGRESSIVE)"));
return NS_OK; /* I/O suspension */
}
if (jpeg_input_complete(&mInfo) &&
(mInfo.input_scan_number == mInfo.output_scan_number))
@ -520,15 +616,28 @@ NS_IMETHODIMP nsJPEGDecoder::WriteFrom(nsIInputStream *inStr, PRUint32 count, PR
case JPEG_DONE:
{
nsresult result;
LOG_SCOPE(gJPEGlog, "nsJPEGDecoder::WriteFrom -- entering JPEG_DONE case");
/* Step 7: Finish decompression */
if (jpeg_finish_decompress(&mInfo) == FALSE)
if (jpeg_finish_decompress(&mInfo) == FALSE) {
PR_LOG(gJPEGDecoderAccountingLog, PR_LOG_DEBUG,
("} (I/O suspension after jpeg_finish_decompress() - DONE)"));
return NS_OK; /* I/O suspension */
}
mState = JPEG_SINK_NON_JPEG_TRAILER;
result = mImage->RestoreDataDone();
if (NS_FAILED (result)) {
mState = JPEG_ERROR;
PR_LOG(gJPEGDecoderAccountingLog, PR_LOG_DEBUG,
("} (could not mark image container with RestoreDataDone)"));
return result;
}
/* we're done dude */
break;
}
@ -545,6 +654,8 @@ NS_IMETHODIMP nsJPEGDecoder::WriteFrom(nsIInputStream *inStr, PRUint32 count, PR
break;
}
PR_LOG(gJPEGDecoderAccountingLog, PR_LOG_DEBUG,
("} (end of function)"));
return NS_OK;
}

4
modules/libpr0n/decoders/jpeg/nsJPEGDecoder.h
Просмотреть файл

@ -124,6 +124,10 @@ public:
cmsHTRANSFORM mTransform;
PRPackedBool mReading;
private:
nsresult AddToTmpAccumulateBuffer(JOCTET *src, PRUint32 len);
};
#endif // nsJPEGDecoder_h__

83
modules/libpr0n/decoders/png/nsPNGDecoder.cpp
Просмотреть файл

@ -23,6 +23,7 @@
* Contributor(s):
* Stuart Parmenter <stuart@mozilla.com>
* Andrew Smith
* Federico Mena-Quintero <federico@novell.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
@ -72,7 +73,8 @@ static void PNGAPI error_callback(png_structp png_ptr, png_const_charp error_msg
static void PNGAPI warning_callback(png_structp png_ptr, png_const_charp warning_msg);
#ifdef PR_LOGGING
PRLogModuleInfo *gPNGLog = PR_NewLogModule("PNGDecoder");
static PRLogModuleInfo *gPNGLog = PR_NewLogModule("PNGDecoder");
static PRLogModuleInfo *gPNGDecoderAccountingLog = PR_NewLogModule("PNGDecoderAccounting");
#endif
NS_IMPL_ISUPPORTS1(nsPNGDecoder, imgIDecoder)
@ -120,6 +122,12 @@ void nsPNGDecoder::CreateFrame(png_uint_32 x_offset, png_uint_32 y_offset,
if (mObserver)
mObserver->OnStartFrame(nsnull, mFrame);
PR_LOG(gPNGDecoderAccountingLog, PR_LOG_DEBUG,
("PNGDecoderAccounting: nsPNGDecoder::CreateFrame -- created image frame with %dx%d pixels in container %p",
width, height,
mImage.get ()));
mFrameHasNoAlpha = PR_TRUE;
}
@ -209,6 +217,25 @@ NS_IMETHODIMP nsPNGDecoder::Init(imgILoad *aLoad)
png_set_progressive_read_fn(mPNG, static_cast<png_voidp>(this),
info_callback, row_callback, end_callback);
/* The image container may already exist if it is reloading itself from us.
* Check that it has the same width/height; otherwise create a new container.
*/
mImageLoad->GetImage(getter_AddRefs(mImage));
if (!mImage) {
mImage = do_CreateInstance("@mozilla.org/image/container;1");
if (!mImage)
return NS_ERROR_OUT_OF_MEMORY;
mImageLoad->SetImage(mImage);
if (NS_FAILED(mImage->SetDiscardable("image/png"))) {
PR_LOG(gPNGDecoderAccountingLog, PR_LOG_DEBUG,
("PNGDecoderAccounting: info_callback(): failed to set image container %p as discardable",
mImage.get()));
return NS_ERROR_FAILURE;
}
}
return NS_OK;
}
@ -218,13 +245,28 @@ NS_IMETHODIMP nsPNGDecoder::Close()
if (mPNG)
png_destroy_read_struct(&mPNG, mInfo ? &mInfo : NULL, NULL);
if (mImage) { // mImage could be null in the case of an error
nsresult result = mImage->RestoreDataDone();
if (NS_FAILED(result)) {
PR_LOG(gPNGDecoderAccountingLog, PR_LOG_DEBUG,
("PNGDecoderAccounting: nsPNGDecoder::Close(): failure in RestoreDataDone() for image container %p",
mImage.get()));
mError = PR_TRUE;
return result;
}
PR_LOG(gPNGDecoderAccountingLog, PR_LOG_DEBUG,
("PNGDecoderAccounting: nsPNGDecoder::Close(): image container %p is now with RestoreDataDone",
mImage.get()));
}
return NS_OK;
}
/* void flush (); */
NS_IMETHODIMP nsPNGDecoder::Flush()
{
return NS_ERROR_NOT_IMPLEMENTED;
return NS_OK;
}
@ -250,10 +292,24 @@ static NS_METHOD ReadDataOut(nsIInputStream* in,
*writeCount = 0;
return NS_ERROR_FAILURE;
}
png_process_data(decoder->mPNG, decoder->mInfo,
reinterpret_cast<unsigned char *>(const_cast<char *>(fromRawSegment)), count);
nsresult result = decoder->mImage->AddRestoreData((char *) fromRawSegment, count);
if (NS_FAILED (result)) {
PR_LOG(gPNGDecoderAccountingLog, PR_LOG_DEBUG,
("PNGDecoderAccounting: ReadDataOut(): failed to add restore data to image container %p",
decoder->mImage.get()));
decoder->mError = PR_TRUE;
*writeCount = 0;
return result;
}
PR_LOG(gPNGDecoderAccountingLog, PR_LOG_DEBUG,
("PNGDecoderAccounting: ReadDataOut(): Added restore data to image container %p",
decoder->mImage.get()));
*writeCount = count;
return NS_OK;
}
@ -513,13 +569,18 @@ info_callback(png_structp png_ptr, png_infop info_ptr)
if (decoder->mObserver)
decoder->mObserver->OnStartDecode(nsnull);
decoder->mImage = do_CreateInstance("@mozilla.org/image/container;1");
if (!decoder->mImage)
longjmp(decoder->mPNG->jmpbuf, 5); // NS_ERROR_OUT_OF_MEMORY
decoder->mImageLoad->SetImage(decoder->mImage);
decoder->mImage->Init(width, height, decoder->mObserver);
/* The image container may already exist if it is reloading itself from us.
* Check that it has the same width/height; otherwise create a new container.
*/
PRInt32 containerWidth, containerHeight;
decoder->mImage->GetWidth(&containerWidth);
decoder->mImage->GetHeight(&containerHeight);
if (containerWidth == 0 && containerHeight == 0) {
// the image hasn't been inited yet
decoder->mImage->Init(width, height, decoder->mObserver);
} else if (containerWidth != width || containerHeight != height) {
longjmp(decoder->mPNG->jmpbuf, 5); // NS_ERROR_UNEXPECTED
}
if (decoder->mObserver)
decoder->mObserver->OnStartContainer(nsnull, decoder->mImage);
@ -761,7 +822,7 @@ end_callback(png_structp png_ptr, png_infop info_ptr)
}
decoder->mImage->DecodingComplete();
if (decoder->mObserver) {
if (!(decoder->apngFlags & FRAME_HIDDEN))
decoder->mObserver->OnStopFrame(nsnull, decoder->mFrame);

7
modules/libpr0n/public/imgIContainer.idl
Просмотреть файл

@ -22,6 +22,7 @@
*
* Contributor(s):
* Stuart Parmenter <pavlov@netscape.com>
* Federico Mena-Quintero <federico@novell.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
@ -144,4 +145,10 @@ interface imgIContainer : nsISupports
* @note -1 means forever.
*/
attribute long loopCount;
/* Methods to discard uncompressed images and restore them again */
[noscript] void setDiscardable(in string aMimeType);
[noscript] void addRestoreData([array, size_is(aCount), const] in char data,
in unsigned long aCount);
[noscript] void restoreDataDone();
};

589
modules/libpr0n/src/imgContainer.cpp
Просмотреть файл

@ -25,6 +25,7 @@
* Asko Tontti <atontti@cc.hut.fi>
* Arron Mogge <paper@animecity.nu>
* Andrew Smith
* Federico Mena-Quintero <federico@novell.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
@ -42,23 +43,47 @@
#include "nsComponentManagerUtils.h"
#include "imgIContainerObserver.h"
#include "ImageErrors.h"
#include "nsIImage.h"
#include "imgILoad.h"
#include "imgIDecoder.h"
#include "imgIDecoderObserver.h"
#include "imgContainer.h"
#include "nsIInterfaceRequestor.h"
#include "nsIInterfaceRequestorUtils.h"
#include "nsAutoPtr.h"
#include "nsStringStream.h"
#include "prmem.h"
#include "prlog.h"
#include "prenv.h"
#include "gfxContext.h"
/* Accounting for compressed data */
#if defined(PR_LOGGING)
static PRLogModuleInfo *gCompressedImageAccountingLog = PR_NewLogModule ("CompressedImageAccounting");
#else
#define gCompressedImageAccountingLog
#endif
static int num_containers_with_discardable_data;
static PRInt64 num_compressed_image_bytes;
NS_IMPL_ISUPPORTS3(imgContainer, imgIContainer, nsITimerCallback, nsIProperties)
//******************************************************************************
imgContainer::imgContainer() :
mSize(0,0),
mNumFrames(0),
mAnim(nsnull),
mAnimationMode(kNormalAnimMode),
mLoopCount(-1),
mObserver(nsnull)
mObserver(nsnull),
mDiscardable(PR_FALSE),
mDiscarded(PR_FALSE),
mRestoreDataDone(PR_FALSE),
mDiscardTimer(nsnull)
{
}
@ -67,6 +92,23 @@ imgContainer::~imgContainer()
{
if (mAnim)
delete mAnim;
if (!mRestoreData.IsEmpty()) {
num_containers_with_discardable_data--;
num_compressed_image_bytes -= mRestoreData.Length();
PR_LOG (gCompressedImageAccountingLog, PR_LOG_DEBUG,
("CompressedImageAccounting: destroying imgContainer %p. "
"Compressed containers: %d, Compressed data bytes: %lld",
this,
num_containers_with_discardable_data,
num_compressed_image_bytes));
}
if (mDiscardTimer) {
mDiscardTimer->Cancel ();
mDiscardTimer = nsnull;
}
}
//******************************************************************************
@ -124,15 +166,53 @@ NS_IMETHODIMP imgContainer::GetHeight(PRInt32 *aHeight)
return NS_OK;
}
nsresult imgContainer::GetCurrentFrameNoRef(gfxIImageFrame **aFrame)
{
nsresult result;
result = RestoreDiscardedData();
if (NS_FAILED (result)) {
PR_LOG (gCompressedImageAccountingLog, PR_LOG_DEBUG,
("CompressedImageAccounting: imgContainer::GetCurrentFrameNoRef(): error %d in RestoreDiscardedData(); "
"returning a null frame from imgContainer %p",
result,
this));
*aFrame = nsnull;
return result;
}
if (!mAnim)
*aFrame = mFrames.SafeObjectAt(0);
else if (mAnim->lastCompositedFrameIndex == mAnim->currentAnimationFrameIndex)
*aFrame = mAnim->compositingFrame;
else
*aFrame = mFrames.SafeObjectAt(mAnim->currentAnimationFrameIndex);
if (!*aFrame)
PR_LOG (gCompressedImageAccountingLog, PR_LOG_DEBUG,
("CompressedImageAccounting: imgContainer::GetCurrentFrameNoRef(): returning null frame from imgContainer %p "
"(no errors when restoring data)",
this));
return NS_OK;
}
//******************************************************************************
/* readonly attribute gfxIImageFrame currentFrame; */
NS_IMETHODIMP imgContainer::GetCurrentFrame(gfxIImageFrame **aCurrentFrame)
{
nsresult result;
NS_ASSERTION(aCurrentFrame, "imgContainer::GetCurrentFrame; Invalid Arg");
if (!aCurrentFrame)
return NS_ERROR_INVALID_POINTER;
if (!(*aCurrentFrame = inlinedGetCurrentFrame()))
result = GetCurrentFrameNoRef (aCurrentFrame);
if (NS_FAILED (result))
return result;
if (!*aCurrentFrame)
return NS_ERROR_FAILURE;
NS_ADDREF(*aCurrentFrame);
@ -148,7 +228,7 @@ NS_IMETHODIMP imgContainer::GetNumFrames(PRUint32 *aNumFrames)
if (!aNumFrames)
return NS_ERROR_INVALID_ARG;
*aNumFrames = mFrames.Count();
*aNumFrames = mNumFrames;
return NS_OK;
}
@ -157,16 +237,24 @@ NS_IMETHODIMP imgContainer::GetNumFrames(PRUint32 *aNumFrames)
/* gfxIImageFrame getFrameAt (in unsigned long index); */
NS_IMETHODIMP imgContainer::GetFrameAt(PRUint32 index, gfxIImageFrame **_retval)
{
nsresult result;
NS_ASSERTION(_retval, "imgContainer::GetFrameAt; Invalid Arg");
if (!_retval)
return NS_ERROR_INVALID_POINTER;
if (!mFrames.Count()) {
if (mNumFrames == 0) {
*_retval = nsnull;
return NS_OK;
}
NS_ENSURE_ARG(index < static_cast<PRUint32>(mFrames.Count()));
NS_ENSURE_ARG((int) index < mNumFrames);
result = RestoreDiscardedData ();
if (NS_FAILED (result)) {
*_retval = nsnull;
return result;
}
if (!(*_retval = mFrames[index]))
return NS_ERROR_FAILURE;
@ -183,16 +271,17 @@ NS_IMETHODIMP imgContainer::AppendFrame(gfxIImageFrame *item)
NS_ASSERTION(item, "imgContainer::AppendFrame; Invalid Arg");
if (!item)
return NS_ERROR_INVALID_ARG;
PRInt32 numFrames = mFrames.Count();
if (numFrames == 0) {
if (mFrames.Count () == 0) {
// This may not be an animated image, don't do all the animation stuff.
mFrames.AppendObject(item);
mNumFrames++;
return NS_OK;
}
if (numFrames == 1) {
if (mFrames.Count () == 1) {
// Now that we got a second frame, initialize animation stuff.
if (!ensureAnimExists())
return NS_ERROR_OUT_OF_MEMORY;
@ -216,11 +305,13 @@ NS_IMETHODIMP imgContainer::AppendFrame(gfxIImageFrame *item)
itemRect);
mFrames.AppendObject(item);
mNumFrames++;
// If this is our second frame, start the animation.
// Must be called after AppendObject because StartAnimation checks for > 1
// frame
if (numFrames == 1)
if (mFrames.Count () == 1)
StartAnimation();
return NS_OK;
@ -230,6 +321,7 @@ NS_IMETHODIMP imgContainer::AppendFrame(gfxIImageFrame *item)
/* void removeFrame (in gfxIImageFrame item); */
NS_IMETHODIMP imgContainer::RemoveFrame(gfxIImageFrame *item)
{
/* Remember to decrement mNumFrames if you implement this */
return NS_ERROR_NOT_IMPLEMENTED;
}
@ -253,7 +345,7 @@ NS_IMETHODIMP imgContainer::DecodingComplete(void)
mAnim->doneDecoding = PR_TRUE;
// If there's only 1 frame, optimize it.
// Optimizing animated images is not supported
if (mFrames.Count() == 1)
if (mNumFrames == 1)
mFrames[0]->SetMutable(PR_FALSE);
return NS_OK;
}
@ -292,11 +384,11 @@ NS_IMETHODIMP imgContainer::SetAnimationMode(PRUint16 aAnimationMode)
break;
case kNormalAnimMode:
if (mLoopCount != 0 ||
(mAnim && (mAnim->currentAnimationFrameIndex + 1 < mFrames.Count())))
(mAnim && (mAnim->currentAnimationFrameIndex + 1 < mNumFrames)))
StartAnimation();
break;
case kLoopOnceAnimMode:
if (mAnim && (mAnim->currentAnimationFrameIndex + 1 < mFrames.Count()))
if (mAnim && (mAnim->currentAnimationFrameIndex + 1 < mNumFrames))
StartAnimation();
break;
}
@ -312,12 +404,18 @@ NS_IMETHODIMP imgContainer::StartAnimation()
(mAnim && (mAnim->timer || mAnim->animating)))
return NS_OK;
if (mFrames.Count() > 1) {
if (mNumFrames > 1) {
if (!ensureAnimExists())
return NS_ERROR_OUT_OF_MEMORY;
PRInt32 timeout;
gfxIImageFrame *currentFrame = inlinedGetCurrentFrame();
nsresult result;
gfxIImageFrame *currentFrame;
result = GetCurrentFrameNoRef (&currentFrame);
if (NS_FAILED (result))
return result;
if (currentFrame) {
currentFrame->GetTimeout(&timeout);
if (timeout <= 0) // -1 means display this frame forever
@ -376,8 +474,15 @@ NS_IMETHODIMP imgContainer::ResetAnimation()
mAnim->currentAnimationFrameIndex = 0;
// Update display
nsCOMPtr<imgIContainerObserver> observer(do_QueryReferent(mObserver));
if (observer)
if (observer) {
nsresult result;
result = RestoreDiscardedData ();
if (NS_FAILED (result))
return result;
observer->FrameChanged(this, mFrames[0], &(mAnim->firstFrameRefreshArea));
}
if (oldAnimating)
return StartAnimation();
@ -411,10 +516,150 @@ NS_IMETHODIMP imgContainer::SetLoopCount(PRInt32 aLoopCount)
return NS_OK;
}
static PRBool
DiscardingEnabled(void)
{
static PRBool inited;
static PRBool enabled;
if (!inited) {
inited = PR_TRUE;
enabled = (PR_GetEnv("MOZ_DISABLE_IMAGE_DISCARD") == nsnull);
}
return enabled;
}
//******************************************************************************
/* void setDiscardable(in string mime_type); */
NS_IMETHODIMP imgContainer::SetDiscardable(const char* aMimeType)
{
NS_ASSERTION(aMimeType, "imgContainer::SetDiscardable() called with null aMimeType");
if (!DiscardingEnabled())
return NS_OK;
if (mDiscardable) {
NS_WARNING ("imgContainer::SetDiscardable(): cannot change an imgContainer which is already discardable");
return NS_ERROR_FAILURE;
}
mDiscardableMimeType.Assign(aMimeType);
mDiscardable = PR_TRUE;
num_containers_with_discardable_data++;
PR_LOG (gCompressedImageAccountingLog, PR_LOG_DEBUG,
("CompressedImageAccounting: Making imgContainer %p (%s) discardable. "
"Compressed containers: %d, Compressed data bytes: %lld",
this,
aMimeType,
num_containers_with_discardable_data,
num_compressed_image_bytes));
return NS_OK;
}
//******************************************************************************
/* void addRestoreData(in nsIInputStream aInputStream, in unsigned long aCount); */
NS_IMETHODIMP imgContainer::AddRestoreData(const char *aBuffer, PRUint32 aCount)
{
NS_ASSERTION(aBuffer, "imgContainer::AddRestoreData() called with null aBuffer");
if (!DiscardingEnabled ())
return NS_OK;
if (!mDiscardable) {
NS_WARNING ("imgContainer::AddRestoreData() can only be called if SetDiscardable is called first");
return NS_ERROR_FAILURE;
}
if (mRestoreDataDone) {
/* We are being called from the decoder while the data is being restored
* (i.e. we were fully loaded once, then we discarded the image data, then
* we are being restored). We don't want to save the compressed data again,
* since we already have it.
*/
return NS_OK;
}
if (!mRestoreData.AppendElements(aBuffer, aCount))
return NS_ERROR_OUT_OF_MEMORY;
num_compressed_image_bytes += aCount;
PR_LOG (gCompressedImageAccountingLog, PR_LOG_DEBUG,
("CompressedImageAccounting: Added compressed data to imgContainer %p (%s). "
"Compressed containers: %d, Compressed data bytes: %lld",
this,
mDiscardableMimeType.get(),
num_containers_with_discardable_data,
num_compressed_image_bytes));
return NS_OK;
}
/* Note! buf must be declared as char buf[9]; */
// just used for logging and hashing the header
static void
get_header_str (char *buf, char *data, PRSize data_len)
{
int i;
int n;
static char hex[] = "0123456789abcdef";
n = data_len < 4 ? data_len : 4;
for (i = 0; i < n; i++) {
buf[i * 2] = hex[(data[i] >> 4) & 0x0f];
buf[i * 2 + 1] = hex[data[i] & 0x0f];
}
buf[i * 2] = 0;
}
//******************************************************************************
/* void restoreDataDone(); */
NS_IMETHODIMP imgContainer::RestoreDataDone (void)
{
if (!DiscardingEnabled ())
return NS_OK;
if (mRestoreDataDone)
return NS_OK;
mRestoreData.Compact();
mRestoreDataDone = PR_TRUE;
if (PR_LOG_TEST(gCompressedImageAccountingLog, PR_LOG_DEBUG)) {
char buf[9];
get_header_str(buf, mRestoreData.Elements(), mRestoreData.Length());
PR_LOG (gCompressedImageAccountingLog, PR_LOG_DEBUG,
("CompressedImageAccounting: imgContainer::RestoreDataDone() - data is done for container %p (%s), %d real frames (cached as %d frames) - header %p is 0x%s (length %d)",
this,
mDiscardableMimeType.get(),
mFrames.Count (),
mNumFrames,
mRestoreData.Elements(),
buf,
mRestoreData.Length()));
}
return ResetDiscardTimer();
}
//******************************************************************************
/* void notify(in nsITimer timer); */
NS_IMETHODIMP imgContainer::Notify(nsITimer *timer)
{
nsresult result;
result = RestoreDiscardedData();
if (NS_FAILED (result))
return result;
// This should never happen since the timer is only set up in StartAnimation()
// after mAnim is checked to exist.
NS_ASSERTION(mAnim, "imgContainer::Notify() called but mAnim is null");
@ -433,8 +678,7 @@ NS_IMETHODIMP imgContainer::Notify(nsITimer *timer)
return NS_OK;
}
PRInt32 numFrames = mFrames.Count();
if (!numFrames)
if (mNumFrames == 0)
return NS_OK;
gfxIImageFrame *nextFrame = nsnull;
@ -448,7 +692,7 @@ NS_IMETHODIMP imgContainer::Notify(nsITimer *timer)
// finished decoding (see EndFrameDecode)
if (mAnim->doneDecoding ||
(nextFrameIndex < mAnim->currentDecodingFrameIndex)) {
if (numFrames == nextFrameIndex) {
if (mNumFrames == nextFrameIndex) {
// End of Animation
// If animation mode is "loop once", it's time to stop animating
@ -906,3 +1150,308 @@ NS_IMETHODIMP imgContainer::GetKeys(PRUint32 *count, char ***keys)
}
return mProperties->GetKeys(count, keys);
}
static int
get_discard_timer_ms (void)
{
/* FIXME: don't hardcode this */
return 45000; /* 45 seconds */
}
void
imgContainer::sDiscardTimerCallback(nsITimer *aTimer, void *aClosure)
{
imgContainer *self = (imgContainer *) aClosure;
int old_frame_count;
NS_ASSERTION(aTimer == self->mDiscardTimer,
"imgContainer::DiscardTimerCallback() got a callback for an unknown timer");
self->mDiscardTimer = nsnull;
old_frame_count = self->mFrames.Count();
if (self->mAnim) {
delete self->mAnim;
self->mAnim = nsnull;
}
self->mFrames.Clear();
self->mDiscarded = PR_TRUE;
PR_LOG(gCompressedImageAccountingLog, PR_LOG_DEBUG,
("CompressedImageAccounting: discarded uncompressed image data from imgContainer %p (%s) - %d frames (cached count: %d); "
"Compressed containers: %d, Compressed data bytes: %lld",
self,
self->mDiscardableMimeType.get(),
old_frame_count,
self->mNumFrames,
num_containers_with_discardable_data,
num_compressed_image_bytes));
}
nsresult
imgContainer::ResetDiscardTimer (void)
{
if (!DiscardingEnabled())
return NS_OK;
if (!mDiscardTimer) {
mDiscardTimer = do_CreateInstance("@mozilla.org/timer;1");
if (!mDiscardTimer)
return NS_ERROR_OUT_OF_MEMORY;
} else {
if (NS_FAILED(mDiscardTimer->Cancel()))
return NS_ERROR_FAILURE;
}
return mDiscardTimer->InitWithFuncCallback(sDiscardTimerCallback,
(void *) this,
get_discard_timer_ms (),
nsITimer::TYPE_ONE_SHOT);
}
nsresult
imgContainer::RestoreDiscardedData(void)
{
nsresult result;
int num_expected_frames;
if (!mDiscardable)
return NS_OK;
result = ResetDiscardTimer();
if (NS_FAILED (result))
return result;
if (!mDiscarded)
return NS_OK;
num_expected_frames = mNumFrames;
result = ReloadImages ();
if (NS_FAILED (result)) {
PR_LOG (gCompressedImageAccountingLog, PR_LOG_DEBUG,
("CompressedImageAccounting: imgContainer::RestoreDiscardedData() for container %p failed to ReloadImages()",
this));
return result;
}
mDiscarded = PR_FALSE;
NS_ASSERTION (mNumFrames == mFrames.Count(),
"number of restored image frames doesn't match");
NS_ASSERTION (num_expected_frames == mNumFrames,
"number of restored image frames doesn't match the original number of frames!");
PR_LOG (gCompressedImageAccountingLog, PR_LOG_DEBUG,
("CompressedImageAccounting: imgContainer::RestoreDiscardedData() restored discarded data "
"for imgContainer %p (%s) - %d image frames. "
"Compressed containers: %d, Compressed data bytes: %lld",
this,
mDiscardableMimeType.get(),
mNumFrames,
num_containers_with_discardable_data,
num_compressed_image_bytes));
return NS_OK;
}
class ContainerLoader : public imgILoad,
public imgIDecoderObserver,
public nsSupportsWeakReference
{
public:
NS_DECL_ISUPPORTS
NS_DECL_IMGILOAD
NS_DECL_IMGIDECODEROBSERVER
NS_DECL_IMGICONTAINEROBSERVER
ContainerLoader(void);
private:
imgIContainer *mContainer;
};
NS_IMPL_ISUPPORTS4 (ContainerLoader, imgILoad, imgIDecoderObserver, imgIContainerObserver, nsISupportsWeakReference)
ContainerLoader::ContainerLoader (void)
{
}
/* Implement imgILoad::image getter */
NS_IMETHODIMP
ContainerLoader::GetImage(imgIContainer **aImage)
{
*aImage = mContainer;
NS_IF_ADDREF (*aImage);
return NS_OK;
}
/* Implement imgILoad::image setter */
NS_IMETHODIMP
ContainerLoader::SetImage(imgIContainer *aImage)
{
mContainer = aImage;
return NS_OK;
}
/* Implement imgILoad::isMultiPartChannel getter */
NS_IMETHODIMP
ContainerLoader::GetIsMultiPartChannel(PRBool *aIsMultiPartChannel)
{
*aIsMultiPartChannel = PR_FALSE; /* FIXME: is this always right? */
return NS_OK;
}
/* Implement imgIDecoderObserver::onStartRequest() */
NS_IMETHODIMP
ContainerLoader::OnStartRequest(imgIRequest *aRequest)
{
return NS_OK;
}
/* Implement imgIDecoderObserver::onStartDecode() */
NS_IMETHODIMP
ContainerLoader::OnStartDecode(imgIRequest *aRequest)
{
return NS_OK;
}
/* Implement imgIDecoderObserver::onStartContainer() */
NS_IMETHODIMP
ContainerLoader::OnStartContainer(imgIRequest *aRequest, imgIContainer *aContainer)
{
return NS_OK;
}
/* Implement imgIDecoderObserver::onStartFrame() */
NS_IMETHODIMP
ContainerLoader::OnStartFrame(imgIRequest *aRequest, gfxIImageFrame *aFrame)
{
return NS_OK;
}
/* Implement imgIDecoderObserver::onDataAvailable() */
NS_IMETHODIMP
ContainerLoader::OnDataAvailable(imgIRequest *aRequest, gfxIImageFrame *aFrame, const nsIntRect * aRect)
{
return NS_OK;
}
/* Implement imgIDecoderObserver::onStopFrame() */
NS_IMETHODIMP
ContainerLoader::OnStopFrame(imgIRequest *aRequest, gfxIImageFrame *aFrame)
{
return NS_OK;
}
/* Implement imgIDecoderObserver::onStopContainer() */
NS_IMETHODIMP
ContainerLoader::OnStopContainer(imgIRequest *aRequest, imgIContainer *aContainer)
{
return NS_OK;
}
/* Implement imgIDecoderObserver::onStopDecode() */
NS_IMETHODIMP
ContainerLoader::OnStopDecode(imgIRequest *aRequest, nsresult status, const PRUnichar *statusArg)
{
return NS_OK;
}
/* Implement imgIDecoderObserver::onStopRequest() */
NS_IMETHODIMP
ContainerLoader::OnStopRequest(imgIRequest *aRequest, PRBool aIsLastPart)
{
return NS_OK;
}
/* implement imgIContainerObserver::frameChanged() */
NS_IMETHODIMP
ContainerLoader::FrameChanged(imgIContainer *aContainer, gfxIImageFrame *aFrame, nsIntRect * aDirtyRect)
{
return NS_OK;
}
nsresult
imgContainer::ReloadImages(void)
{
nsresult result = NS_ERROR_FAILURE;
nsCOMPtr<nsIInputStream> stream;
NS_ASSERTION(!mRestoreData.IsEmpty(),
"imgContainer::ReloadImages(): mRestoreData should not be empty");
NS_ASSERTION(mRestoreDataDone,
"imgContainer::ReloadImages(): mRestoreDataDone shoudl be true!");
mNumFrames = 0;
NS_ASSERTION(mFrames.Count() == 0,
"imgContainer::ReloadImages(): mFrames should be empty");
nsCAutoString decoderCID(NS_LITERAL_CSTRING("@mozilla.org/image/decoder;2?type=") + mDiscardableMimeType);
nsCOMPtr<imgIDecoder> decoder = do_CreateInstance(decoderCID.get());
if (!decoder) {
PR_LOG(gCompressedImageAccountingLog, PR_LOG_WARNING,
("CompressedImageAccounting: imgContainer::ReloadImages() could not create decoder for %s",
mDiscardableMimeType.get()));
return NS_IMAGELIB_ERROR_NO_DECODER;
}
nsCOMPtr<imgILoad> loader = new ContainerLoader();
if (!loader) {
PR_LOG(gCompressedImageAccountingLog, PR_LOG_WARNING,
("CompressedImageAccounting: imgContainer::ReloadImages() could not allocate ContainerLoader "
"when reloading the images for container %p",
this));
return NS_ERROR_OUT_OF_MEMORY;
}
loader->SetImage(this);
result = decoder->Init(loader);
if (NS_FAILED(result)) {
PR_LOG(gCompressedImageAccountingLog, PR_LOG_WARNING,
("CompressedImageAccounting: imgContainer::ReloadImages() image container %p "
"failed to initialize the decoder (%s)",
this,
mDiscardableMimeType.get()));
return result;
}
result = NS_NewByteInputStream(getter_AddRefs(stream), mRestoreData.Elements(), mRestoreData.Length(), NS_ASSIGNMENT_DEPEND);
NS_ENSURE_SUCCESS(result, result);
if (PR_LOG_TEST(gCompressedImageAccountingLog, PR_LOG_DEBUG)) {
char buf[9];
get_header_str(buf, mRestoreData.Elements(), mRestoreData.Length());
PR_LOG(gCompressedImageAccountingLog, PR_LOG_WARNING,
("CompressedImageAccounting: imgContainer::ReloadImages() starting to restore images for container %p (%s) - "
"header %p is 0x%s (length %d)",
this,
mDiscardableMimeType.get(),
mRestoreData.Elements(),
buf,
mRestoreData.Length()));
}
PRUint32 written;
result = decoder->WriteFrom(stream, mRestoreData.Length(), &written);
NS_ENSURE_SUCCESS(result, result);
if (NS_FAILED(decoder->Flush()))
return result;
result = decoder->Close();
NS_ENSURE_SUCCESS(result, result);
NS_ASSERTION(mFrames.Count() == mNumFrames,
"imgContainer::ReloadImages(): the restored mFrames.Count() doesn't match mNumFrames!");
return result;
}

32
modules/libpr0n/src/imgContainer.h
Просмотреть файл

@ -23,6 +23,7 @@
* Contributor(s):
* Stuart Parmenter <pavlov@netscape.com>
* Chris Saari <saari@netscape.com>
* Federico Mena-Quintero <federico@novell.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
@ -58,6 +59,7 @@
#include "nsIProperties.h"
#include "nsITimer.h"
#include "nsWeakReference.h"
#include "nsTArray.h"
#define NS_IMGCONTAINER_CID \
{ /* 27f0682c-ff64-4dd2-ae7a-668e59f2fd38 */ \
@ -192,14 +194,8 @@ private:
timer->Cancel();
}
};
inline gfxIImageFrame* inlinedGetCurrentFrame() {
if (!mAnim)
return mFrames.SafeObjectAt(0);
if (mAnim->lastCompositedFrameIndex == mAnim->currentAnimationFrameIndex)
return mAnim->compositingFrame;
return mFrames.SafeObjectAt(mAnim->currentAnimationFrameIndex);
}
nsresult GetCurrentFrameNoRef(gfxIImageFrame** aFrame);
inline Anim* ensureAnimExists() {
if (!mAnim)
@ -283,10 +279,15 @@ private:
nsIntSize mSize;
//! All the <gfxIImageFrame>s of the PNG
// *** IMPORTANT: if you use mFrames in a method, call RestoreDiscardedData() first to ensure
// that the frames actually exist (they may have been discarded to save memory).
nsCOMArray<gfxIImageFrame> mFrames;
int mNumFrames; /* stored separately from mFrames.Count() to support discarded images */
nsCOMPtr<nsIProperties> mProperties;
// *** IMPORTANT: if you use mAnim in a method, call RestoreDiscardedData() first to ensure
// that the frames actually exist (they may have been discarded to save memory).
imgContainer::Anim* mAnim;
//! See imgIContainer for mode constants
@ -297,6 +298,19 @@ private:
//! imgIContainerObserver
nsWeakPtr mObserver;
PRBool mDiscardable;
PRBool mDiscarded;
nsCString mDiscardableMimeType;
nsTArray<char> mRestoreData;
PRBool mRestoreDataDone;
nsCOMPtr<nsITimer> mDiscardTimer;
nsresult ResetDiscardTimer (void);
nsresult RestoreDiscardedData (void);
nsresult ReloadImages (void);
static void sDiscardTimerCallback (nsITimer *aTimer, void *aClosure);
};
#endif /* __imgContainer_h__ */