// Copyright (c) the JPEG XL Project Authors.
//
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file or at
// https://developers.google.com/open-source/licenses/bsd

#ifndef LIB_EXTRAS_DEC_JPG_H_
#define LIB_EXTRAS_DEC_JPG_H_

// Decodes JPG pixels and metadata in memory.

#include <cstdint>

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

namespace jxl {

struct SizeConstraints;

namespace extras {

class ColorHints;
class PackedPixelFile;

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_
