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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.
#include "lib/jxl/enc_debug_image.h"
#include <jxl/memory_manager.h>
#include <cstddef>
#include <cstdint>
#include "lib/jxl/base/rect.h"
#include "lib/jxl/base/status.h"
#include "lib/jxl/color_encoding_internal.h"
#include "lib/jxl/dec_external_image.h"
#include "lib/jxl/enc_params.h"
#include "lib/jxl/image_ops.h"
namespace jxl {
namespace {
template <typename From>
StatusOr<Image3F> ConvertToFloat(const Image3<From>& from) {
float factor = 1.0f / std::numeric_limits<From>::max();
if (std::is_same<From, double>::value || std::is_same<From, float>::value) {
factor = 1.0f;
}
JxlMemoryManager* memory_manager = from.memory_manager();
JXL_ASSIGN_OR_RETURN(
Image3F to, Image3F::Create(memory_manager, from.xsize(), from.ysize()));
for (size_t c = 0; c < 3; ++c) {
for (size_t y = 0; y < from.ysize(); ++y) {
const From* const JXL_RESTRICT row_from = from.ConstPlaneRow(c, y);
float* const JXL_RESTRICT row_to = to.PlaneRow(c, y);
for (size_t x = 0; x < from.xsize(); ++x) {
row_to[x] = row_from[x] * factor;
}
}
}
return to;
}
template <typename T>
Status DumpImageT(const CompressParams& cparams, const char* label,
const ColorEncoding& color_encoding, const Image3<T>& image) {
if (!cparams.debug_image) return true;
JXL_ASSIGN_OR_RETURN(Image3F float_image, ConvertToFloat(image));
JxlColorEncoding color = color_encoding.ToExternal();
size_t num_pixels = 3 * image.xsize() * image.ysize();
std::vector<uint16_t> pixels(num_pixels);
const ImageF* channels[3];
for (int c = 0; c < 3; ++c) {
channels[c] = &float_image.Plane(c);
}
JXL_RETURN_IF_ERROR(ConvertChannelsToExternal(
channels, 3, 16, false, JXL_BIG_ENDIAN, 6 * image.xsize(), nullptr,
pixels.data(), 2 * num_pixels, PixelCallback(), Orientation::kIdentity));
(*cparams.debug_image)(cparams.debug_image_opaque, label, image.xsize(),
image.ysize(), &color, pixels.data());
return true;
}
template <typename T>
Status DumpPlaneNormalizedT(const CompressParams& cparams, const char* label,
const Plane<T>& image) {
T min;
T max;
ImageMinMax(image, &min, &max);
JxlMemoryManager* memory_manager = image.memory_manager();
JXL_ASSIGN_OR_RETURN(
Image3B normalized,
Image3B::Create(memory_manager, image.xsize(), image.ysize()));
for (size_t c = 0; c < 3; ++c) {
float mul = min == max ? 0 : (255.0f / (max - min));
for (size_t y = 0; y < image.ysize(); ++y) {
const T* JXL_RESTRICT row_in = image.ConstRow(y);
uint8_t* JXL_RESTRICT row_out = normalized.PlaneRow(c, y);
for (size_t x = 0; x < image.xsize(); ++x) {
row_out[x] = static_cast<uint8_t>((row_in[x] - min) * mul);
}
}
}
return DumpImageT(cparams, label, ColorEncoding::SRGB(), normalized);
}
} // namespace
Status DumpImage(const CompressParams& cparams, const char* label,
const Image3<float>& image) {
return DumpImageT(cparams, label, ColorEncoding::SRGB(), image);
}
Status DumpImage(const CompressParams& cparams, const char* label,
const Image3<uint8_t>& image) {
return DumpImageT(cparams, label, ColorEncoding::SRGB(), image);
}
Status DumpXybImage(const CompressParams& cparams, const char* label,
const Image3F& image) {
if (!cparams.debug_image) return true;
JxlMemoryManager* memory_manager = image.memory_manager();
JXL_ASSIGN_OR_RETURN(
Image3F linear,
Image3F::Create(memory_manager, image.xsize(), image.ysize()));
OpsinParams opsin_params;
opsin_params.Init(kDefaultIntensityTarget);
JXL_RETURN_IF_ERROR(
OpsinToLinear(image, Rect(linear), nullptr, &linear, opsin_params));
return DumpImageT(cparams, label, ColorEncoding::LinearSRGB(), linear);
}
Status DumpPlaneNormalized(const CompressParams& cparams, const char* label,
const Plane<float>& image) {
return DumpPlaneNormalizedT(cparams, label, image);
}
Status DumpPlaneNormalized(const CompressParams& cparams, const char* label,
const Plane<uint8_t>& image) {
return DumpPlaneNormalizedT(cparams, label, image);
}
} // namespace jxl