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cjxl_main.cc
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cjxl_main.cc
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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.
// Note: This encoder binary does extensive flag-validity checking (in
// order to produce meaningful error messages), and on top of that
// checks all libjxl C API call return values. The downside of this
// vs. libjxl providing meaningful error messages is that a change to
// the accepted range of a flag-specified parameter in libjxl will
// also require a change to the range-check here. The advantage is
// that this minimizes the size of libjxl.
#include <stdint.h>
#include <cmath>
#include <cstdlib>
#include <functional>
#include <iostream>
#include <sstream>
#include <string>
#include <thread>
#include <type_traits>
#include <vector>
#include "jxl/codestream_header.h"
#include "jxl/encode.h"
#include "jxl/encode_cxx.h"
#include "jxl/thread_parallel_runner.h"
#include "jxl/thread_parallel_runner_cxx.h"
#include "jxl/types.h"
#include "lib/extras/dec/apng.h"
#include "lib/extras/dec/color_hints.h"
#include "lib/extras/dec/gif.h"
#include "lib/extras/dec/jpg.h"
#include "lib/extras/dec/pgx.h"
#include "lib/extras/dec/pnm.h"
#include "lib/extras/enc/jxl.h"
#include "lib/extras/time.h"
#include "lib/jxl/base/override.h"
#include "lib/jxl/base/printf_macros.h"
#include "lib/jxl/base/status.h"
#include "lib/jxl/exif.h"
#include "lib/jxl/size_constraints.h"
#include "tools/args.h"
#include "tools/cmdline.h"
#include "tools/codec_config.h"
#include "tools/file_io.h"
#include "tools/speed_stats.h"
namespace jpegxl {
namespace tools {
namespace {
inline bool ParsePhotonNoiseParameter(const char* arg, float* out) {
return strncmp(arg, "ISO", 3) == 0 && ParseFloat(arg + 3, out) && *out > 0;
}
inline bool ParseIntensityTarget(const char* arg, float* out) {
return ParseFloat(arg, out) && *out > 0;
}
} // namespace
enum CjxlRetCode : int {
OK = 0,
ERR_PARSE,
ERR_INVALID_ARG,
ERR_LOAD_INPUT,
ERR_INVALID_INPUT,
ERR_ENCODING,
ERR_CONTAINER,
ERR_WRITE,
DROPPED_JBRD,
};
struct CompressArgs {
// CompressArgs() = default;
void AddCommandLineOptions(CommandLineParser* cmdline) {
// Positional arguments.
cmdline->AddPositionalOption("INPUT", /* required = */ true,
"the input can be "
#if JPEGXL_ENABLE_APNG
"PNG, APNG, "
#endif
#if JPEGXL_ENABLE_GIF
"GIF, "
#endif
#if JPEGXL_ENABLE_JPEG
"JPEG, "
#else
"JPEG (lossless recompression only), "
#endif
#if JPEGXL_ENABLE_EXR
"EXR, "
#endif
"PPM, PFM, or PGX",
&file_in);
cmdline->AddPositionalOption("OUTPUT", /* required = */ true,
"the compressed JXL output file", &file_out);
// Flags.
// TODO(lode): also add options to add exif/xmp/other metadata in the
// container.
cmdline->AddOptionValue('\0', "container", "0|1",
"0 = Do not encode using container format (strip "
"Exif/XMP/JPEG bitstream reconstruction data)."
"1 = Force using container format \n"
"(default: use only if needed).\n",
&container, &ParseOverride, 1);
cmdline->AddOptionValue(
'\0', "jpeg_store_metadata", "0|1",
("If --lossless_jpeg=1, store JPEG reconstruction "
"metadata in the JPEG XL container "
"(for lossless reconstruction of the JPEG codestream)."
"(default: 1)"),
&jpeg_store_metadata, &ParseUnsigned, 2);
// Target distance/size/bpp
opt_distance_id = cmdline->AddOptionValue(
'd', "distance", "maxError",
"Max. butteraugli distance, lower = higher quality.\n"
" 0.0 = mathematically lossless. Default for already-lossy input "
"(JPEG/GIF).\n"
" 1.0 = visually lossless. Default for other input.\n"
" Recommended range: 0.5 .. 3.0. Allowed range: 0.0 ... 25.0.\n"
" Mutually exclusive with --quality.",
&distance, &ParseFloat);
// High-level options
opt_quality_id = cmdline->AddOptionValue(
'q', "quality", "QUALITY",
"Quality setting (is remapped to --distance)."
" 100 = mathematically lossless. Default for already-lossy input "
"(JPEG/GIF).\n"
" Other input gets encoded as per --distance default,\n"
" which corresponds to quality 90.\n"
" Quality values roughly match libjpeg quality.\n"
" Recommended range: 68 .. 96. Allowed range: 0 .. 100.\n"
" Mutually exclusive with --distance.",
&quality, &ParseFloat);
cmdline->AddOptionValue(
'e', "effort", "EFFORT",
"Encoder effort setting. Range: 1 .. 9.\n"
" Default: 7. Higher number is more effort (slower).",
&effort, &ParseUnsigned, -1);
cmdline->AddOptionValue(
'\0', "compress_boxes", "0|1",
"Disable/enable Brotli compression for metadata boxes "
"(not provided = default, 0 = disable, 1 = enable).",
&compress_boxes, &ParseOverride, 1);
cmdline->AddOptionValue(
'\0', "brotli_effort", "B_EFFORT",
"Brotli effort setting. Range: 0 .. 11.\n"
" Default: 9. Higher number is more effort (slower).",
&brotli_effort, &ParseUnsigned, -1);
cmdline->AddOptionValue(
'\0', "faster_decoding", "0|1|2|3|4",
"Favour higher decoding speed. 0 = default, higher "
"values give higher speed at the expense of quality",
&faster_decoding, &ParseUnsigned, 2);
cmdline->AddOptionFlag('p', "progressive",
"Enable progressive/responsive decoding.",
&progressive, &SetBooleanTrue);
cmdline->AddOptionValue('\0', "premultiply", "-1|0|1",
"Force premultiplied (associated) alpha.",
&premultiply, &ParseSigned, 1);
cmdline->AddOptionValue(
'\0', "keep_invisible", "0|1",
"force disable/enable preserving color of invisible "
"pixels (default: 1 if lossless, 0 if lossy).",
&keep_invisible, &ParseOverride, 1);
cmdline->AddOptionValue(
'\0', "group_order", "0|1",
"Order in which 256x256 groups are stored "
"in the codestream for progressive rendering. "
"Value not provided means 'encoder default', 0 means 'scanline order', "
"1 means 'center-first order'.",
&group_order, &ParseOverride, 1);
cmdline->AddOptionValue(
'\0', "center_x", "0..XSIZE",
"Determines the horizontal position of center for the center-first "
"group order. The value -1 means 'use the middle of the image', "
"other values [0..xsize) set this to a particular coordinate.",
¢er_x, &ParseInt64, 1);
cmdline->AddOptionValue(
'\0', "center_y", "0..YSIZE",
"Determines the vertical position of center for the center-first "
"group order. The value -1 means 'use the middle of the image', "
"other values [0..ysize) set this to a particular coordinate.",
¢er_y, &ParseInt64, 1);
// Flags.
cmdline->AddOptionFlag('\0', "progressive_ac",
"Use the progressive mode for AC.", &progressive_ac,
&SetBooleanTrue, 1);
cmdline->AddOptionFlag(
'\0', "qprogressive_ac",
"Use the progressive mode for AC with shift quantization.",
&qprogressive_ac, &SetBooleanTrue, 1);
cmdline->AddOptionValue(
'\0', "progressive_dc", "num_dc_frames",
"Progressive-DC setting. Valid values are: -1, 0, 1, 2.",
&progressive_dc, &ParseInt64, 1);
cmdline->AddOptionValue(
'm', "modular", "0|1",
"Use modular mode (not provided = encoder chooses, 0 = enforce VarDCT, "
"1 = enforce modular mode).",
&modular, &ParseOverride, 1);
// JPEG modes: parallel Brunsli, pixels to JPEG, or JPEG to Brunsli
opt_lossless_jpeg_id = cmdline->AddOptionValue(
'j', "lossless_jpeg", "0|1",
"If the input is JPEG, losslessly transcode JPEG, "
"rather than using reencode pixels.",
&lossless_jpeg, &ParseUnsigned, 1);
cmdline->AddOptionValue(
'\0', "jpeg_reconstruction_cfl", "0|1",
"Enable/disable chroma-from-luma (CFL) for lossless "
"JPEG reconstruction.",
&jpeg_reconstruction_cfl, &ParseOverride, 2);
cmdline->AddOptionValue(
'\0', "num_threads", "N",
"Number of worker threads (-1 == use machine default, "
"0 == do not use multithreading).",
&num_threads, &ParseSigned, 1);
cmdline->AddOptionValue('\0', "num_reps", "N",
"How many times to compress. (For benchmarking).",
&num_reps, &ParseUnsigned, 1);
cmdline->AddOptionFlag('\0', "disable_output",
"No output file will be written (for benchmarking)",
&disable_output, &SetBooleanTrue, 1);
cmdline->AddOptionValue(
'\0', "photon_noise", "ISO3200",
"Adds noise to the image emulating photographic film noise. "
"The higher the given number, the grainier the image will be. "
"As an example, a value of 100 gives low noise whereas a value "
"of 3200 gives a lot of noise. The default value is 0.",
&photon_noise_iso, &ParsePhotonNoiseParameter, 1);
cmdline->AddOptionValue(
'\0', "dots", "0|1",
"Force disable/enable dots generation. "
"(not provided = default, 0 = disable, 1 = enable).",
&dots, &ParseOverride, 1);
cmdline->AddOptionValue(
'\0', "patches", "0|1",
"Force disable/enable patches generation. "
"(not provided = default, 0 = disable, 1 = enable).",
&patches, &ParseOverride, 1);
cmdline->AddOptionValue(
'\0', "resampling", "-1|1|2|4|8",
"Resampling for extra channels. Default of -1 applies resampling only "
"for low quality. Value 1 does no downsampling (1x1), 2 does 2x2 "
"downsampling, 4 is for 4x4 downsampling, and 8 for 8x8 downsampling.",
&resampling, &ParseInt64, 0);
cmdline->AddOptionValue(
'\0', "ec_resampling", "-1|1|2|4|8",
"Resampling for extra channels. Default of -1 applies resampling only "
"for low quality. Value 1 does no downsampling (1x1), 2 does 2x2 "
"downsampling, 4 is for 4x4 downsampling, and 8 for 8x8 downsampling.",
&ec_resampling, &ParseInt64, 2);
cmdline->AddOptionFlag('\0', "already_downsampled",
"Do not downsample the given input before encoding, "
"but still signal that the decoder should upsample.",
&already_downsampled, &SetBooleanTrue, 2);
cmdline->AddOptionValue(
'\0', "epf", "-1|0|1|2|3",
"Edge preserving filter level, -1 to 3. "
"Value -1 means: default (encoder chooses), 0 to 3 set a strength.",
&epf, &ParseInt64, 1);
cmdline->AddOptionValue(
'\0', "gaborish", "0|1",
"Force disable/enable the gaborish filter. "
"(not provided = default, 0 = disable, 1 = enable).",
&gaborish, &ParseOverride, 1);
cmdline->AddOptionValue(
'\0', "intensity_target", "N",
"Upper bound on the intensity level present in the image in nits. "
"Leaving this set to its default of 0 lets libjxl choose a sensible "
"default "
"value based on the color encoding.",
&intensity_target, &ParseIntensityTarget, 1);
cmdline->AddOptionValue(
'x', "dec-hints", "key=value",
"color_space indicates the ColorEncoding, see Description();\n"
"icc_pathname refers to a binary file containing an ICC profile.",
&color_hints, &ParseAndAppendKeyValue, 1);
cmdline->AddOptionValue(
'\0', "override_bitdepth", "0=use from image, 1-32=override",
"If nonzero, store the given bit depth in the JPEG XL file metadata"
" (1-32), instead of using the bit depth from the original input"
" image.",
&override_bitdepth, &ParseUnsigned, 2);
// modular mode options
cmdline->AddOptionValue(
'I', "iterations", "F",
"[modular encoding] Fraction of pixels used to learn MA trees as "
"a percentage. -1 = default, 0 = no MA and fast decode, 50 = "
"default value, 100 = all."
"Higher values use more encoder memory.",
&modular_ma_tree_learning_percent, &ParseFloat, 2);
cmdline->AddOptionValue(
'C', "modular_colorspace", "K",
("[modular encoding] color transform: -1=default, 0=RGB (none), "
"1-41=RCT (6=YCoCg, default: try several, depending on speed)"),
&modular_colorspace, &ParseInt64, 1);
opt_modular_group_size_id = cmdline->AddOptionValue(
'g', "modular_group_size", "K",
"[modular encoding] group size: -1 == default. 0 => 128, "
"1 => 256, 2 => 512, 3 => 1024",
&modular_group_size, &ParseInt64, 1);
cmdline->AddOptionValue(
'P', "modular_predictor", "K",
"[modular encoding] predictor(s) to use: 0=zero, "
"1=left, 2=top, 3=avg0, 4=select, 5=gradient, 6=weighted, "
"7=topright, 8=topleft, 9=leftleft, 10=avg1, 11=avg2, 12=avg3, "
"13=toptop predictive average "
"14=mix 5 and 6, 15=mix everything. If unset, uses default 14, "
"at slowest speed default 15.",
&modular_predictor, &ParseInt64, 1);
cmdline->AddOptionValue(
'E', "modular_nb_prev_channels", "K",
"[modular encoding] number of extra MA tree properties to use",
&modular_nb_prev_channels, &ParseInt64, 2);
cmdline->AddOptionValue(
'\0', "modular_palette_colors", "K",
"[modular encoding] Use color palette if number of colors is smaller "
"than or equal to this, or -1 to use the encoder default.",
&modular_palette_colors, &ParseInt64, 1);
cmdline->AddOptionFlag(
'\0', "modular_lossy_palette",
"[modular encoding] quantize to a palette that has fewer entries than "
"would be necessary for perfect preservation; for the time being, it "
"is "
"recommended to set --palette=0 with this option to use the default "
"palette only",
&modular_lossy_palette, &SetBooleanTrue, 1);
cmdline->AddOptionValue(
'X', "pre-compact", "PERCENT",
"[modular encoding] Use Global channel palette if the number of "
"colors is smaller than this percentage of range. "
"Use 0-100 to set an explicit percentage, -1 to use the encoder "
"default.",
&modular_channel_colors_global_percent, &ParseFloat, 2);
cmdline->AddOptionValue(
'Y', "post-compact", "PERCENT",
"[modular encoding] Use Local (per-group) channel palette if the "
"number "
"of colors is smaller than this percentage of range. Use 0-100 to set "
"an explicit percentage, -1 to use the encoder default.",
&modular_channel_colors_group_percent, &ParseFloat, 2);
cmdline->AddOptionValue('\0', "codestream_level", "K",
"The codestream level. Either `-1`, `5` or `10`.",
&codestream_level, &ParseInt64, 2);
opt_responsive_id = cmdline->AddOptionValue(
'R', "responsive", "K",
"[modular encoding] do Squeeze transform, 0=false, "
"1=true (default: true if lossy, false if lossless)",
&responsive, &ParseInt64, 1);
cmdline->AddOptionFlag('V', "version",
"Print encoder library version number and exit.",
&version, &SetBooleanTrue, 1);
cmdline->AddOptionFlag('\0', "quiet", "Be more silent", &quiet,
&SetBooleanTrue, 1);
cmdline->AddOptionValue(
'\0', "frame_indexing", "string",
// TODO(tfish): Add a more convenient vanilla alternative.
"If non-empty, a string matching '^(0*|1[01]*)'. If this string has a "
"'1' in i-th position, then the i-th frame will be indexed in "
"the frame index box.",
&frame_indexing, &ParseString, 1);
cmdline->AddOptionFlag(
'v', "verbose",
"Verbose output; can be repeated, also applies to help (!).", &verbose,
&SetBooleanTrue);
}
// Common flags.
bool version = false;
jxl::Override container = jxl::Override::kDefault;
bool quiet = false;
bool disable_output = false;
const char* file_in = nullptr;
const char* file_out = nullptr;
jxl::Override print_profile = jxl::Override::kDefault;
// Decoding source image flags
jxl::extras::ColorHints color_hints;
// JXL flags
size_t override_bitdepth = 0;
int32_t num_threads = -1;
size_t num_reps = 1;
float intensity_target = 0;
// Whether to perform lossless transcoding with kVarDCT or kJPEG encoding.
// If true, attempts to load JPEG coefficients instead of pixels.
// Reset to false if input image is not a JPEG.
size_t lossless_jpeg = 1;
size_t jpeg_store_metadata = 1;
float quality = -1001.f; // Default to lossless if input is already lossy,
// or to VarDCT otherwise.
bool verbose = false;
bool progressive = false;
bool progressive_ac = false;
bool qprogressive_ac = false;
int64_t progressive_dc = -1;
bool modular_lossy_palette = false;
int32_t premultiply = -1;
bool already_downsampled = false;
jxl::Override jpeg_reconstruction_cfl = jxl::Override::kDefault;
jxl::Override modular = jxl::Override::kDefault;
jxl::Override keep_invisible = jxl::Override::kDefault;
jxl::Override dots = jxl::Override::kDefault;
jxl::Override patches = jxl::Override::kDefault;
jxl::Override gaborish = jxl::Override::kDefault;
jxl::Override group_order = jxl::Override::kDefault;
jxl::Override compress_boxes = jxl::Override::kDefault;
size_t faster_decoding = 0;
int64_t resampling = -1;
int64_t ec_resampling = -1;
int64_t epf = -1;
int64_t center_x = -1;
int64_t center_y = -1;
int64_t modular_group_size = -1;
int64_t modular_predictor = -1;
int64_t modular_colorspace = -1;
float modular_channel_colors_global_percent = -1.f;
float modular_channel_colors_group_percent = -1.f;
int64_t modular_palette_colors = -1;
int64_t modular_nb_prev_channels = -1;
float modular_ma_tree_learning_percent = -1.f;
float photon_noise_iso = 0;
int64_t codestream_level = -1;
int64_t responsive = -1;
float distance = 1.0;
size_t effort = 7;
size_t brotli_effort = 9;
std::string frame_indexing;
// Will get passed on to AuxOut.
// jxl::InspectorImage3F inspector_image3f;
// References (ids) of specific options to check if they were matched.
CommandLineParser::OptionId opt_lossless_jpeg_id = -1;
CommandLineParser::OptionId opt_responsive_id = -1;
CommandLineParser::OptionId opt_distance_id = -1;
CommandLineParser::OptionId opt_quality_id = -1;
CommandLineParser::OptionId opt_modular_group_size_id = -1;
};
const char* ModeFromArgs(const CompressArgs& args) {
if (args.lossless_jpeg) return "JPEG";
if (args.modular == jxl::Override::kOn || args.distance == 0)
return "Modular";
return "VarDCT";
}
std::string DistanceFromArgs(const CompressArgs& args) {
char buf[100];
if (args.lossless_jpeg) {
snprintf(buf, sizeof(buf), "lossless transcode");
} else if (args.distance == 0) {
snprintf(buf, sizeof(buf), "lossless");
} else {
snprintf(buf, sizeof(buf), "d%.3f", args.distance);
}
return buf;
}
void PrintMode(jxl::extras::PackedPixelFile& ppf, const double decode_mps,
size_t num_bytes, const CompressArgs& args) {
const char* mode = ModeFromArgs(args);
const std::string distance = DistanceFromArgs(args);
if (args.lossless_jpeg) {
fprintf(stderr, "Read JPEG image with %" PRIuS " bytes.\n", num_bytes);
} else {
fprintf(stderr,
"Read %" PRIuS "x%" PRIuS " image, %" PRIuS " bytes, %.1f MP/s\n",
static_cast<size_t>(ppf.info.xsize),
static_cast<size_t>(ppf.info.ysize), num_bytes, decode_mps);
}
fprintf(stderr, "Encoding [%s%s, %s, effort: %" PRIuS,
(args.container == jxl::Override::kOn ? "Container | " : ""), mode,
distance.c_str(), args.effort);
if (args.container == jxl::Override::kOn) {
if (args.lossless_jpeg && args.jpeg_store_metadata)
fprintf(stderr, " | JPEG reconstruction data");
if (!ppf.metadata.exif.empty())
fprintf(stderr, " | %" PRIuS "-byte Exif", ppf.metadata.exif.size());
if (!ppf.metadata.xmp.empty())
fprintf(stderr, " | %" PRIuS "-byte XMP", ppf.metadata.xmp.size());
if (!ppf.metadata.jumbf.empty())
fprintf(stderr, " | %" PRIuS "-byte JUMBF", ppf.metadata.jumbf.size());
}
fprintf(stderr, "], \n");
}
bool IsJPG(const std::vector<uint8_t>& image_data) {
return (image_data.size() >= 2 && image_data[0] == 0xFF &&
image_data[1] == 0xD8);
}
// TODO(tfish): Replace with non-C-API library function.
// Implementation is in extras/.
jxl::Status GetPixeldata(const std::vector<uint8_t>& image_data,
const jxl::extras::ColorHints& color_hints,
jxl::extras::PackedPixelFile& ppf,
jxl::extras::Codec& codec) {
// Any valid encoding is larger (ensures codecs can read the first few bytes).
constexpr size_t kMinBytes = 9;
if (image_data.size() < kMinBytes) return JXL_FAILURE("Input too small.");
jxl::Span<const uint8_t> encoded(image_data);
ppf.info.orientation = JXL_ORIENT_IDENTITY;
jxl::SizeConstraints size_constraints;
const auto choose_codec = [&]() {
#if JPEGXL_ENABLE_APNG
if (jxl::extras::DecodeImageAPNG(encoded, color_hints, size_constraints,
&ppf)) {
return jxl::extras::Codec::kPNG;
}
#endif
if (jxl::extras::DecodeImagePGX(encoded, color_hints, size_constraints,
&ppf)) {
return jxl::extras::Codec::kPGX;
} else if (jxl::extras::DecodeImagePNM(encoded, color_hints,
size_constraints, &ppf)) {
return jxl::extras::Codec::kPNM;
}
#if JPEGXL_ENABLE_GIF
if (jxl::extras::DecodeImageGIF(encoded, color_hints, size_constraints,
&ppf)) {
return jxl::extras::Codec::kGIF;
}
#endif
#if JPEGXL_ENABLE_JPEG
if (jxl::extras::DecodeImageJPG(encoded, color_hints, size_constraints,
&ppf)) {
return jxl::extras::Codec::kJPG;
}
#endif
// TODO(tfish): Bring back EXR and PSD.
return jxl::extras::Codec::kUnknown;
};
codec = choose_codec();
if (codec == jxl::extras::Codec::kUnknown) {
return JXL_FAILURE("Codecs failed to decode input.");
}
return true;
}
using flag_check_fn = std::function<std::string(int64_t)>;
using flag_check_float_fn = std::function<std::string(float)>;
template <typename T>
void ProcessFlag(
const char* flag_name, T flag_value,
JxlEncoderFrameSettingId encoder_option,
jxl::extras::JXLCompressParams* params,
flag_check_fn flag_check = [](T x) { return std::string(); }) {
std::string error = flag_check(flag_value);
if (!error.empty()) {
std::cerr << "Invalid flag value for --" << flag_name << ": " << error
<< std::endl;
exit(EXIT_FAILURE);
}
params->options.emplace_back(
jxl::extras::JXLOption(encoder_option, flag_value, 0));
}
void ProcessBoolFlag(jxl::Override flag_value,
JxlEncoderFrameSettingId encoder_option,
jxl::extras::JXLCompressParams* params) {
if (flag_value != jxl::Override::kDefault) {
int64_t value = flag_value == jxl::Override::kOn ? 1 : 0;
params->options.emplace_back(
jxl::extras::JXLOption(encoder_option, value, 0));
}
}
void SetDistanceFromFlags(CommandLineParser* cmdline, CompressArgs* args,
jxl::extras::JXLCompressParams* params,
const jxl::extras::Codec& codec) {
bool distance_set = cmdline->GetOption(args->opt_distance_id)->matched();
bool quality_set = cmdline->GetOption(args->opt_quality_id)->matched();
if (quality_set) {
if (distance_set) {
std::cerr << "Must not set both --distance and --quality." << std::endl;
exit(EXIT_FAILURE);
}
double distance = args->quality >= 100 ? 0.0
: args->quality >= 30
? 0.1 + (100 - args->quality) * 0.09
: 53.0 / 3000.0 * args->quality * args->quality -
23.0 / 20.0 * args->quality + 25.0;
args->distance = distance;
distance_set = true;
}
if (!distance_set) {
bool lossy_input = (codec == jxl::extras::Codec::kJPG ||
codec == jxl::extras::Codec::kGIF);
args->distance = lossy_input ? 0.0 : 1.0;
}
params->distance = args->distance;
}
void ProcessFlags(const jxl::extras::Codec codec,
const jxl::extras::PackedPixelFile& ppf,
const std::vector<uint8_t>* jpeg_bytes,
CommandLineParser* cmdline, CompressArgs* args,
jxl::extras::JXLCompressParams* params) {
// Tuning flags.
ProcessBoolFlag(args->modular, JXL_ENC_FRAME_SETTING_MODULAR, params);
ProcessBoolFlag(args->keep_invisible, JXL_ENC_FRAME_SETTING_KEEP_INVISIBLE,
params);
ProcessBoolFlag(args->dots, JXL_ENC_FRAME_SETTING_DOTS, params);
ProcessBoolFlag(args->patches, JXL_ENC_FRAME_SETTING_PATCHES, params);
ProcessBoolFlag(args->gaborish, JXL_ENC_FRAME_SETTING_GABORISH, params);
ProcessBoolFlag(args->group_order, JXL_ENC_FRAME_SETTING_GROUP_ORDER, params);
if (!args->frame_indexing.empty()) {
bool must_be_all_zeros = args->frame_indexing[0] != '1';
for (char c : args->frame_indexing) {
if (c == '1') {
if (must_be_all_zeros) {
std::cerr << "Invalid --frame_indexing. If the first character is "
"'0', all must be '0'."
<< std::endl;
exit(EXIT_FAILURE);
}
} else if (c != '0') {
std::cerr << "Invalid --frame_indexing. Must match the pattern "
"'^(0*|1[01]*)$'."
<< std::endl;
exit(EXIT_FAILURE);
}
}
}
ProcessFlag(
"effort", static_cast<int64_t>(args->effort),
JXL_ENC_FRAME_SETTING_EFFORT, params, [](int64_t x) -> std::string {
return (1 <= x && x <= 9) ? "" : "Valid range is {1, 2, ..., 9}.";
});
ProcessFlag("brotli_effort", static_cast<int64_t>(args->brotli_effort),
JXL_ENC_FRAME_SETTING_BROTLI_EFFORT, params,
[](int64_t x) -> std::string {
return (-1 <= x && x <= 11)
? ""
: "Valid range is {-1, 0, 1, ..., 11}.";
});
ProcessFlag(
"epf", args->epf, JXL_ENC_FRAME_SETTING_EPF, params,
[](int64_t x) -> std::string {
return (-1 <= x && x <= 3) ? "" : "Valid range is {-1, 0, 1, 2, 3}.\n";
});
ProcessFlag("faster_decoding", static_cast<int64_t>(args->faster_decoding),
JXL_ENC_FRAME_SETTING_DECODING_SPEED, params,
[](int64_t x) -> std::string {
return (0 <= x && x <= 4) ? ""
: "Valid range is {0, 1, 2, 3, 4}.\n";
});
ProcessFlag("resampling", args->resampling, JXL_ENC_FRAME_SETTING_RESAMPLING,
params, [](int64_t x) -> std::string {
return (x == -1 || x == 1 || x == 2 || x == 4 || x == 8)
? ""
: "Valid values are {-1, 1, 2, 4, 8}.\n";
});
ProcessFlag("ec_resampling", args->ec_resampling,
JXL_ENC_FRAME_SETTING_EXTRA_CHANNEL_RESAMPLING, params,
[](int64_t x) -> std::string {
return (x == -1 || x == 1 || x == 2 || x == 4 || x == 8)
? ""
: "Valid values are {-1, 1, 2, 4, 8}.\n";
});
ProcessFlag("photon_noise_iso", args->photon_noise_iso,
JXL_ENC_FRAME_SETTING_PHOTON_NOISE, params);
ProcessFlag("already_downsampled",
static_cast<int64_t>(args->already_downsampled),
JXL_ENC_FRAME_SETTING_ALREADY_DOWNSAMPLED, params);
SetDistanceFromFlags(cmdline, args, params, codec);
if (args->group_order != jxl::Override::kOn &&
(args->center_x != -1 || args->center_y != -1)) {
std::cerr << "Invalid flag combination. Setting --center_x or --center_y "
<< "requires setting --group_order=1" << std::endl;
exit(EXIT_FAILURE);
}
ProcessFlag("center_x", args->center_x,
JXL_ENC_FRAME_SETTING_GROUP_ORDER_CENTER_X, params,
[](int64_t x) -> std::string {
if (x < -1) {
return "Valid values are: -1 or [0 .. xsize).";
}
return "";
});
ProcessFlag("center_y", args->center_y,
JXL_ENC_FRAME_SETTING_GROUP_ORDER_CENTER_Y, params,
[](int64_t x) -> std::string {
if (x < -1) {
return "Valid values are: -1 or [0 .. ysize).";
}
return "";
});
// Progressive/responsive mode settings.
bool responsive_set = cmdline->GetOption(args->opt_responsive_id)->matched();
ProcessFlag("progressive_dc", args->progressive_dc,
JXL_ENC_FRAME_SETTING_PROGRESSIVE_DC, params,
[](int64_t x) -> std::string {
return (-1 <= x && x <= 2) ? ""
: "Valid range is {-1, 0, 1, 2}.\n";
});
ProcessFlag("progressive_ac", static_cast<int64_t>(args->progressive_ac),
JXL_ENC_FRAME_SETTING_PROGRESSIVE_AC, params);
if (args->progressive) {
args->qprogressive_ac = true;
args->responsive = 1;
responsive_set = true;
}
if (responsive_set) {
ProcessFlag("responsive", args->responsive,
JXL_ENC_FRAME_SETTING_RESPONSIVE, params);
}
if (args->qprogressive_ac) {
ProcessFlag("qprogressive_ac", static_cast<int64_t>(1),
JXL_ENC_FRAME_SETTING_QPROGRESSIVE_AC, params);
}
// Modular mode related.
// TODO(firsching): consider doing more validation after image size is
// known, i.e. set to 512 if 256 would be silly using
// opt_modular_group_size_id.
ProcessFlag("modular_group_size", args->modular_group_size,
JXL_ENC_FRAME_SETTING_MODULAR_GROUP_SIZE, params,
[](int64_t x) -> std::string {
return (-1 <= x && x <= 3)
? ""
: "Invalid --modular_group_size. Valid "
"range is {-1, 0, 1, 2, 3}.\n";
});
ProcessFlag("modular_predictor", args->modular_predictor,
JXL_ENC_FRAME_SETTING_MODULAR_PREDICTOR, params,
[](int64_t x) -> std::string {
return (-1 <= x && x <= 15)
? ""
: "Invalid --modular_predictor. Valid "
"range is {-1, 0, 1, ..., 15}.\n";
});
ProcessFlag("modular_colorspace", args->modular_colorspace,
JXL_ENC_FRAME_SETTING_MODULAR_COLOR_SPACE, params,
[](int64_t x) -> std::string {
return (-1 <= x && x <= 41)
? ""
: "Invalid --modular_colorspace. Valid range is "
"{-1, 0, 1, ..., 41}.\n";
});
ProcessFlag("modular_ma_tree_learning_percent",
args->modular_ma_tree_learning_percent,
JXL_ENC_FRAME_SETTING_MODULAR_MA_TREE_LEARNING_PERCENT, params,
[](float x) -> std::string {
return -1 <= x && x <= 100
? ""
: "Invalid --modular_ma_tree_learning_percent, Valid"
"rang is [-1, 100].\n";
});
ProcessFlag("modular_nb_prev_channels", args->modular_nb_prev_channels,
JXL_ENC_FRAME_SETTING_MODULAR_NB_PREV_CHANNELS, params,
[](int64_t x) -> std::string {
return (-1 <= x && x <= 11)
? ""
: "Invalid --modular_nb_prev_channels. Valid "
"range is {-1, 0, 1, ..., 11}.\n";
});
if (args->modular_lossy_palette) {
if (args->progressive || args->qprogressive_ac) {
fprintf(stderr,
"WARNING: --modular_lossy_palette is ignored in "
"progressive mode.\n");
args->modular_lossy_palette = false;
}
}
ProcessFlag("modular_lossy_palette",
static_cast<int64_t>(args->modular_lossy_palette),
JXL_ENC_FRAME_SETTING_LOSSY_PALETTE, params);
ProcessFlag("modular_palette_colors", args->modular_palette_colors,
JXL_ENC_FRAME_SETTING_PALETTE_COLORS, params,
[](int64_t x) -> std::string {
return -1 <= x ? ""
: "Invalid --modular_palette_colors, must "
"be -1 or non-negative\n";
});
ProcessFlag("modular_channel_colors_global_percent",
args->modular_channel_colors_global_percent,
JXL_ENC_FRAME_SETTING_CHANNEL_COLORS_GLOBAL_PERCENT, params,
[](float x) -> std::string {
return (-1 <= x && x <= 100)
? ""
: "Invalid --modular_channel_colors_global_percent. "
"Valid "
"range is [-1, 100].\n";
});
ProcessFlag("modular_channel_colors_group_percent",
args->modular_channel_colors_group_percent,
JXL_ENC_FRAME_SETTING_CHANNEL_COLORS_GROUP_PERCENT, params,
[](float x) -> std::string {
return (-1 <= x && x <= 100)
? ""
: "Invalid --modular_channel_colors_group_percent. "
"Valid "
"range is [-1, 100].\n";
});
// JPEG specific options.
if (jpeg_bytes) {
ProcessBoolFlag(args->jpeg_reconstruction_cfl,
JXL_ENC_FRAME_SETTING_JPEG_RECON_CFL, params);
ProcessBoolFlag(args->compress_boxes,
JXL_ENC_FRAME_SETTING_JPEG_COMPRESS_BOXES, params);
}
// Set per-frame options.
for (size_t num_frame = 0; num_frame < ppf.frames.size(); ++num_frame) {
if (num_frame < args->frame_indexing.size() &&
args->frame_indexing[num_frame] == '1') {
int64_t value = 1;
params->options.emplace_back(
jxl::extras::JXLOption(JXL_ENC_FRAME_INDEX_BOX, value, num_frame));
}
}
// Copy over the rest of the non-option params.
params->use_container = args->container == jxl::Override::kOn;
params->jpeg_store_metadata = args->jpeg_store_metadata;
params->intensity_target = args->intensity_target;
params->override_bitdepth = args->override_bitdepth;
params->codestream_level = args->codestream_level;
params->premultiply = args->premultiply;
params->compress_boxes = args->compress_boxes != jxl::Override::kOff;
if (codec == jxl::extras::Codec::kPNM) {
params->input_bitdepth.type = JXL_BIT_DEPTH_FROM_CODESTREAM;
}
}
} // namespace tools
} // namespace jpegxl
int main(int argc, char** argv) {
std::string version = jpegxl::tools::CodecConfigString(JxlEncoderVersion());
jpegxl::tools::CompressArgs args;
jpegxl::tools::CommandLineParser cmdline;
args.AddCommandLineOptions(&cmdline);
if (!cmdline.Parse(argc, const_cast<const char**>(argv))) {
// Parse already printed the actual error cause.
fprintf(stderr, "Use '%s -h' for more information\n", argv[0]);
return jpegxl::tools::CjxlRetCode::ERR_PARSE;
}
if (args.version) {
fprintf(stdout, "cjxl %s\n", version.c_str());
fprintf(stdout, "Copyright (c) the JPEG XL Project\n");
return jpegxl::tools::CjxlRetCode::OK;
}
if (!args.quiet) {
fprintf(stderr, "JPEG XL encoder %s\n", version.c_str());
}
if (cmdline.HelpFlagPassed() || !args.file_in) {
cmdline.PrintHelp();
return jpegxl::tools::CjxlRetCode::OK;
}
if (!args.file_out && !args.disable_output) {
std::cerr
<< "No output file specified and --disable_output flag not passed."
<< std::endl;
exit(EXIT_FAILURE);
}
if (args.file_out && args.disable_output && !args.quiet) {
fprintf(stderr,
"Encoding will be performed, but the result will be discarded.\n");
}
// Loading the input.
// Depending on flags-settings, we want to either load a JPEG and
// faithfully convert it to JPEG XL, or load (JPEG or non-JPEG)
// pixel data.
std::vector<uint8_t> image_data;
jxl::extras::PackedPixelFile ppf;
jxl::extras::Codec codec = jxl::extras::Codec::kUnknown;
double decode_mps = 0;
size_t pixels = 0;
if (!jpegxl::tools::ReadFile(args.file_in, &image_data)) {
std::cerr << "Reading image data failed." << std::endl;
exit(EXIT_FAILURE);
}
if (!jpegxl::tools::IsJPG(image_data)) args.lossless_jpeg = 0;
if (!args.lossless_jpeg) {
const double t0 = jxl::Now();
jxl::Status status =
jpegxl::tools::GetPixeldata(image_data, args.color_hints, ppf, codec);
if (!status) {
std::cerr << "Getting pixel data failed." << std::endl;
exit(EXIT_FAILURE);
}
if (ppf.frames.empty()) {
std::cerr << "No frames on input file." << std::endl;
exit(EXIT_FAILURE);
}
const double t1 = jxl::Now();
pixels = ppf.info.xsize * ppf.info.ysize;
decode_mps = pixels * ppf.info.num_color_channels * 1E-6 / (t1 - t0);
}
std::vector<uint8_t>* jpeg_bytes = nullptr;
if (args.lossless_jpeg && jpegxl::tools::IsJPG(image_data)) {
if (!cmdline.GetOption(args.opt_lossless_jpeg_id)->matched()) {
std::cerr << "Note: Implicit-default for JPEG is lossless-transcoding. "
<< "To silence this message, set --lossless_jpeg=(1|0)."
<< std::endl;
}
jpeg_bytes = &image_data;
}
jxl::extras::JXLCompressParams params;
ProcessFlags(codec, ppf, jpeg_bytes, &cmdline, &args, ¶ms);
if (!ppf.metadata.exif.empty() || !ppf.metadata.xmp.empty() ||
!ppf.metadata.jumbf.empty() || !ppf.metadata.iptc.empty() ||
(args.lossless_jpeg && args.jpeg_store_metadata)) {
args.container = jxl::Override::kOn;
}
if (!ppf.metadata.exif.empty()) {
jxl::InterpretExif(ppf.metadata.exif, &ppf.info.orientation);
}
if (!args.quiet) {
PrintMode(ppf, decode_mps, image_data.size(), args);
}
size_t num_worker_threads = JxlThreadParallelRunnerDefaultNumWorkerThreads();
int64_t flag_num_worker_threads = args.num_threads;
if (flag_num_worker_threads > -1) {
num_worker_threads = flag_num_worker_threads;
}
JxlThreadParallelRunnerPtr runner = JxlThreadParallelRunnerMake(
/*memory_manager=*/nullptr, num_worker_threads);