blob: d8846a8f048a169b66f68be557bbbcbb4237b81b (
plain)
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
|
// Copyright (c) the JPEG XL Project Authors. All rights reserved.
//
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
#ifndef LIB_JXL_COMPRESSED_DC_H_
#define LIB_JXL_COMPRESSED_DC_H_
#include "lib/jxl/ac_context.h"
#include "lib/jxl/base/data_parallel.h"
#include "lib/jxl/base/rect.h"
#include "lib/jxl/base/status.h"
#include "lib/jxl/frame_header.h"
#include "lib/jxl/image.h"
#include "lib/jxl/modular/modular_image.h"
// DC handling functions: encoding and decoding of DC to and from bitstream, and
// related function to initialize the per-group decoder cache.
namespace jxl {
// Smooth DC in already-smooth areas, to counteract banding.
Status AdaptiveDCSmoothing(const float* dc_factors, Image3F* dc,
ThreadPool* pool);
void DequantDC(const Rect& r, Image3F* dc, ImageB* quant_dc, const Image& in,
const float* dc_factors, float mul, const float* cfl_factors,
const YCbCrChromaSubsampling& chroma_subsampling,
const BlockCtxMap& bctx);
} // namespace jxl
#endif // LIB_JXL_COMPRESSED_DC_H_
|
