1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
|
/* -*- 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));
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
|
