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
|
/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <AK/ByteBuffer.h>
#include <AK/OwnPtr.h>
#include <AK/RefCounted.h>
#include <AK/RefPtr.h>
#include <LibGfx/Size.h>
namespace Gfx {
class Bitmap;
struct ImageFrameDescriptor {
RefPtr<Bitmap> image;
int duration { 0 };
};
class ImageDecoderPlugin {
public:
virtual ~ImageDecoderPlugin() { }
virtual IntSize size() = 0;
virtual RefPtr<Gfx::Bitmap> bitmap() = 0;
virtual void set_volatile() = 0;
[[nodiscard]] virtual bool set_nonvolatile() = 0;
virtual bool sniff() = 0;
virtual bool is_animated() = 0;
virtual size_t loop_count() = 0;
virtual size_t frame_count() = 0;
virtual ImageFrameDescriptor frame(size_t i) = 0;
protected:
ImageDecoderPlugin() { }
};
class ImageDecoder : public RefCounted<ImageDecoder> {
public:
static NonnullRefPtr<ImageDecoder> create(const u8* data, size_t size) { return adopt(*new ImageDecoder(data, size)); }
static NonnullRefPtr<ImageDecoder> create(const ByteBuffer& data) { return adopt(*new ImageDecoder(data.data(), data.size())); }
~ImageDecoder();
bool is_valid() const { return m_plugin; }
IntSize size() const { return m_plugin ? m_plugin->size() : IntSize(); }
int width() const { return size().width(); }
int height() const { return size().height(); }
RefPtr<Gfx::Bitmap> bitmap() const;
void set_volatile()
{
if (m_plugin)
m_plugin->set_volatile();
}
[[nodiscard]] bool set_nonvolatile() { return m_plugin ? m_plugin->set_nonvolatile() : false; }
bool sniff() const { return m_plugin ? m_plugin->sniff() : false; }
bool is_animated() const { return m_plugin ? m_plugin->is_animated() : false; }
size_t loop_count() const { return m_plugin ? m_plugin->loop_count() : 0; }
size_t frame_count() const { return m_plugin ? m_plugin->frame_count() : 0; }
ImageFrameDescriptor frame(size_t i) const { return m_plugin ? m_plugin->frame(i) : ImageFrameDescriptor(); }
private:
ImageDecoder(const u8*, size_t);
mutable OwnPtr<ImageDecoderPlugin> m_plugin;
};
}
|
