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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "ImageOps.h"
#include "ClippedImage.h"
#include "DecodePool.h"
#include "Decoder.h"
#include "DecoderFactory.h"
#include "DynamicImage.h"
#include "FrozenImage.h"
#include "IDecodingTask.h"
#include "Image.h"
#include "imgIContainer.h"
#include "mozilla/gfx/2D.h"
#include "nsStreamUtils.h"
#include "OrientedImage.h"
#include "SourceBuffer.h"
using namespace mozilla::gfx;
namespace mozilla {
namespace image {
/* static */ already_AddRefed<Image>
ImageOps::Freeze(Image* aImage)
{
RefPtr<Image> frozenImage = new FrozenImage(aImage);
return frozenImage.forget();
}
/* static */ already_AddRefed<imgIContainer>
ImageOps::Freeze(imgIContainer* aImage)
{
nsCOMPtr<imgIContainer> frozenImage =
new FrozenImage(static_cast<Image*>(aImage));
return frozenImage.forget();
}
/* static */ already_AddRefed<Image>
ImageOps::Clip(Image* aImage, nsIntRect aClip,
const Maybe<nsSize>& aSVGViewportSize)
{
RefPtr<Image> clippedImage = new ClippedImage(aImage, aClip, aSVGViewportSize);
return clippedImage.forget();
}
/* static */ already_AddRefed<imgIContainer>
ImageOps::Clip(imgIContainer* aImage, nsIntRect aClip,
const Maybe<nsSize>& aSVGViewportSize)
{
nsCOMPtr<imgIContainer> clippedImage =
new ClippedImage(static_cast<Image*>(aImage), aClip, aSVGViewportSize);
return clippedImage.forget();
}
/* static */ already_AddRefed<Image>
ImageOps::Orient(Image* aImage, Orientation aOrientation)
{
RefPtr<Image> orientedImage = new OrientedImage(aImage, aOrientation);
return orientedImage.forget();
}
/* static */ already_AddRefed<imgIContainer>
ImageOps::Orient(imgIContainer* aImage, Orientation aOrientation)
{
nsCOMPtr<imgIContainer> orientedImage =
new OrientedImage(static_cast<Image*>(aImage), aOrientation);
return orientedImage.forget();
}
/* static */ already_AddRefed<imgIContainer>
ImageOps::CreateFromDrawable(gfxDrawable* aDrawable)
{
nsCOMPtr<imgIContainer> drawableImage = new DynamicImage(aDrawable);
return drawableImage.forget();
}
/* static */ already_AddRefed<gfx::SourceSurface>
ImageOps::DecodeToSurface(nsIInputStream* aInputStream,
const nsACString& aMimeType,
uint32_t aFlags)
{
MOZ_ASSERT(aInputStream);
nsresult rv;
// Prepare the input stream.
nsCOMPtr<nsIInputStream> inputStream = aInputStream;
if (!NS_InputStreamIsBuffered(aInputStream)) {
nsCOMPtr<nsIInputStream> bufStream;
rv = NS_NewBufferedInputStream(getter_AddRefs(bufStream),
aInputStream, 1024);
if (NS_SUCCEEDED(rv)) {
inputStream = bufStream;
}
}
// Figure out how much data we've been passed.
uint64_t length;
rv = inputStream->Available(&length);
if (NS_FAILED(rv) || length > UINT32_MAX) {
return nullptr;
}
// Write the data into a SourceBuffer.
NotNull<RefPtr<SourceBuffer>> sourceBuffer = WrapNotNull(new SourceBuffer());
sourceBuffer->ExpectLength(length);
rv = sourceBuffer->AppendFromInputStream(inputStream, length);
if (NS_FAILED(rv)) {
return nullptr;
}
sourceBuffer->Complete(NS_OK);
// Create a decoder.
DecoderType decoderType =
DecoderFactory::GetDecoderType(PromiseFlatCString(aMimeType).get());
RefPtr<Decoder> decoder =
DecoderFactory::CreateAnonymousDecoder(decoderType, sourceBuffer,
Nothing(), ToSurfaceFlags(aFlags));
if (!decoder) {
return nullptr;
}
// Run the decoder synchronously.
RefPtr<IDecodingTask> task = new AnonymousDecodingTask(WrapNotNull(decoder), /* aResumable */ false);
task->Run();
if (!decoder->GetDecodeDone() || decoder->HasError()) {
return nullptr;
}
// Pull out the surface.
RawAccessFrameRef frame = decoder->GetCurrentFrameRef();
if (!frame) {
return nullptr;
}
RefPtr<SourceSurface> surface = frame->GetSourceSurface();
if (!surface) {
return nullptr;
}
return surface.forget();
}
} // namespace image
} // namespace mozilla
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