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Bug 1320684 - Start metadata decoding when the first data chunk has been received. r=tnikkel

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This commit is contained in:
Andrew Osmond
2016-11-28 08:42:55 -05:00
parent d16a08d896
commit b991d94a1f
2 changed files with 21 additions and 20 deletions
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29
image/RasterImage.cpp
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@@ -84,7 +84,8 @@ RasterImage::RasterImage(ImageURL* aURI /* = nullptr */) :
mTransient(false),
mSyncLoad(false),
mDiscardable(false),
mHasSourceData(false),
mSomeSourceData(false),
mAllSourceData(false),
mHasBeenDecoded(false),
mPendingAnimation(false),
mAnimationFinished(false),
@@ -146,14 +147,6 @@ RasterImage::Init(const char* aMimeType,
SurfaceCache::LockImage(ImageKey(this));
}
if (!mSyncLoad) {
// Create an async metadata decoder and verify we succeed in doing so.
nsresult rv = DecodeMetadata(DECODE_FLAGS_DEFAULT);
if (NS_FAILED(rv)) {
return NS_ERROR_FAILURE;
}
}
// Mark us as initialized
mInitialized = true;
@@ -359,7 +352,7 @@ RasterImage::LookupFrame(const IntSize& aSize,
// Sync decoding guarantees that we got the frame, but if it's owned by an
// async decoder that's currently running, the contents of the frame may not
// be available yet. Make sure we get everything.
if (mHasSourceData && (aFlags & FLAG_SYNC_DECODE)) {
if (mAllSourceData && (aFlags & FLAG_SYNC_DECODE)) {
result.Surface()->WaitUntilFinished();
}
@@ -874,7 +867,7 @@ RasterImage::OnImageDataComplete(nsIRequest*, nsISupports*, nsresult aStatus,
MOZ_ASSERT(NS_IsMainThread());
// Record that we have all the data we're going to get now.
mHasSourceData = true;
mAllSourceData = true;
// Let decoders know that there won't be any more data coming.
mSourceBuffer->Complete(aStatus);
@@ -946,6 +939,14 @@ RasterImage::OnImageDataAvailable(nsIRequest*,
uint32_t aCount)
{
nsresult rv = mSourceBuffer->AppendFromInputStream(aInputStream, aCount);
if (NS_SUCCEEDED(rv) && !mSomeSourceData) {
mSomeSourceData = true;
if (!mSyncLoad) {
// Create an async metadata decoder and verify we succeed in doing so.
rv = DecodeMetadata(DECODE_FLAGS_DEFAULT);
}
}
if (NS_FAILED(rv)) {
DoError();
}
@@ -1029,7 +1030,7 @@ RasterImage::Discard()
bool
RasterImage::CanDiscard() {
return mHasSourceData && // ...have the source data...
return mAllSourceData && // ...have the source data...
!mAnimationState; // Can never discard animated images
}
@@ -1204,7 +1205,7 @@ RasterImage::Decode(const IntSize& aSize,
mDecodeCount++;
// We're ready to decode; start the decoder.
return LaunchDecodingTask(task, this, aFlags, mHasSourceData);
return LaunchDecodingTask(task, this, aFlags, mAllSourceData);
}
NS_IMETHODIMP
@@ -1227,7 +1228,7 @@ RasterImage::DecodeMetadata(uint32_t aFlags)
}
// We're ready to decode; start the decoder.
LaunchDecodingTask(task, this, aFlags, mHasSourceData);
LaunchDecodingTask(task, this, aFlags, mAllSourceData);
return NS_OK;
}