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Diffstat (limited to '')
-rw-r--r-- | third_party/jpeg-xl/lib/jxl/compressed_dc.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/third_party/jpeg-xl/lib/jxl/compressed_dc.h b/third_party/jpeg-xl/lib/jxl/compressed_dc.h new file mode 100644 index 0000000000..b06e5931f0 --- /dev/null +++ b/third_party/jpeg-xl/lib/jxl/compressed_dc.h @@ -0,0 +1,34 @@ +// 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 <stddef.h> +#include <stdint.h> + +#include "lib/jxl/ac_context.h" +#include "lib/jxl/base/data_parallel.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. +void 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, + YCbCrChromaSubsampling chroma_subsampling, + const BlockCtxMap& bctx); + +} // namespace jxl + +#endif // LIB_JXL_COMPRESSED_DC_H_ |