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// 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_EXTRAS_DEC_JPG_H_

#define LIB_EXTRAS_DEC_JPG_H_

// Decodes JPG pixels and metadata in memory.

#include <stdint.h>

#include "lib/extras/codec.h"

#include "lib/extras/dec/color_hints.h"

#include "lib/jxl/base/data_parallel.h"

#include "lib/jxl/base/span.h"

#include "lib/jxl/base/status.h"

namespace jxl {

struct SizeConstraints;

namespace extras {

bool CanDecodeJPG();

struct JPGDecompressParams {

  int num_colors = 0;

  bool two_pass_quant = false;

  // 0 = none, 1 = ordered, 2 = Floyd-Steinberg

  int dither_mode = 0;

};

// Decodes `bytes` into `ppf`. color_hints are ignored.

// `elapsed_deinterleave`, if non-null, will be set to the time (in seconds)

// that it took to deinterleave the raw JSAMPLEs to planar floats.

Status DecodeImageJPG(Span<const uint8_t> bytes, const ColorHints& color_hints,

                      PackedPixelFile* ppf,

                      const SizeConstraints* constraints = nullptr,

                      const JPGDecompressParams* dparams = nullptr);

}  // namespace extras

}  // namespace jxl

#endif  // LIB_EXTRAS_DEC_JPG_H_