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
|
/* -*- 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/. */
#ifndef mozilla_image_decoders_nsJXLDecoder_h
#define mozilla_image_decoders_nsJXLDecoder_h
#include "Decoder.h"
#include "StreamingLexer.h"
#include "mozilla/Vector.h"
#include "mozilla/image/jxl_decoder_ffi.h"
namespace mozilla::image {
struct JxlDecoderDeleter {
void operator()(JxlApiDecoder* ptr) { jxl_decoder_destroy(ptr); }
};
class nsJXLDecoder final : public Decoder {
public:
~nsJXLDecoder() override;
DecoderType GetType() const override { return DecoderType::JXL; }
protected:
nsresult InitInternal() override;
LexerResult DoDecode(SourceBufferIterator& aIterator,
IResumable* aOnResume) override;
private:
friend class DecoderFactory;
explicit nsJXLDecoder(RasterImage* aImage);
std::unique_ptr<JxlApiDecoder, JxlDecoderDeleter> mDecoder;
enum class State { JXL_DATA, DRAIN_FRAMES, FINISHED_JXL_DATA };
enum class FrameOutputResult {
BufferAllocated,
FrameAdvanced,
DecodeComplete,
NoOutput,
Error
};
JxlDecoderStatus ProcessInput(const uint8_t** aData, size_t* aLength);
nsresult ProcessFrame(Vector<uint8_t>& aPixelBuffer);
FrameOutputResult HandleFrameOutput();
LexerTransition<State> ReadJXLData(const char* aData, size_t aLength);
LexerTransition<State> DrainFrames();
LexerTransition<State> FinishedJXLData();
StreamingLexer<State> mLexer;
uint32_t mFrameIndex = 0;
Vector<uint8_t> mPixelBuffer;
};
} // namespace mozilla::image
#endif // mozilla_image_decoders_nsJXLDecoder_h
|
