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// Copyright 2023 Google LLC
// SPDX-License-Identifier: BSD-2-Clause
#include "convert_command.h"
#include "avif/avif_cxx.h"
#include "avifutil.h"
#include "imageio.h"
#include "swapbase_command.h"
namespace avif {
ConvertCommand::ConvertCommand()
: ProgramCommand("convert", "Convert a jpeg with a gain map to avif.") {
argparse_.add_argument(arg_input_filename_, "input_filename.jpg");
argparse_.add_argument(arg_output_filename_, "output_image.avif");
argparse_.add_argument(arg_swap_base_, "--swap-base")
.help("Make the HDR image the base image")
.action(argparse::Action::STORE_TRUE)
.default_value("false");
argparse_.add_argument(arg_gain_map_quality_, "--qgain-map")
.help("Quality for the gain map (0-100, where 100 is lossless)")
.default_value("60");
argparse_.add_argument<CicpValues, CicpConverter>(arg_cicp_, "--cicp")
.help(
"Set the cicp values for the input image, expressed as "
"P/T/M where P = color primaries, T = transfer characteristics, "
"M = matrix coefficients.");
arg_image_encode_.Init(argparse_, /*can_have_alpha=*/false);
arg_image_read_.Init(argparse_);
}
avifResult ConvertCommand::Run() {
#if !defined(AVIF_ENABLE_JPEG_GAIN_MAP_CONVERSION)
std::cout << "JPEG gainmap conversion unavailable because avifgainmaputil "
"was not built with libxml2.\n";
return AVIF_RESULT_NOT_IMPLEMENTED;
#else
const avifPixelFormat pixel_format =
static_cast<avifPixelFormat>(arg_image_read_.pixel_format.value());
ImagePtr image(avifImageCreateEmpty());
if (image == nullptr) {
return AVIF_RESULT_OUT_OF_MEMORY;
}
const avifAppFileFormat file_format = avifReadImage(
arg_input_filename_.value().c_str(), pixel_format, arg_image_read_.depth,
AVIF_CHROMA_DOWNSAMPLING_AUTOMATIC, arg_image_read_.ignore_profile,
/*ignoreExif=*/false,
/*ignoreXMP=*/false,
/*allowChangingCicp=*/true,
/*ignoreGainMap=*/false, AVIF_DEFAULT_IMAGE_SIZE_LIMIT, image.get(),
/*outDepth=*/nullptr,
/*sourceTiming=*/nullptr,
/*frameIter=*/nullptr);
if (file_format == AVIF_APP_FILE_FORMAT_UNKNOWN) {
std::cout << "Failed to decode image: " << arg_input_filename_;
return AVIF_RESULT_INVALID_ARGUMENT;
}
if (arg_cicp_.provenance() == argparse::Provenance::SPECIFIED) {
image->colorPrimaries = arg_cicp_.value().color_primaries;
image->transferCharacteristics = arg_cicp_.value().transfer_characteristics;
image->matrixCoefficients = arg_cicp_.value().matrix_coefficients;
} else if (image->icc.size == 0 &&
image->colorPrimaries == AVIF_COLOR_PRIMARIES_UNSPECIFIED &&
image->transferCharacteristics ==
AVIF_COLOR_PRIMARIES_UNSPECIFIED) {
// If there is no ICC and no CICP, assume sRGB by default.
image->colorPrimaries = AVIF_COLOR_PRIMARIES_SRGB;
image->transferCharacteristics = AVIF_TRANSFER_CHARACTERISTICS_SRGB;
}
if (image->gainMap && image->gainMap->altICC.size == 0) {
if (image->gainMap->altColorPrimaries == AVIF_COLOR_PRIMARIES_UNSPECIFIED) {
// Assume the alternate image has the same primaries as the base image.
image->gainMap->altColorPrimaries = image->colorPrimaries;
}
if (image->gainMap->altTransferCharacteristics ==
AVIF_TRANSFER_CHARACTERISTICS_UNSPECIFIED) {
// Assume the alternate image is PQ HDR.
image->gainMap->altTransferCharacteristics =
AVIF_TRANSFER_CHARACTERISTICS_PQ;
}
}
if (image->gainMap == nullptr || image->gainMap->image == nullptr) {
std::cerr << "Input image " << arg_input_filename_
<< " does not contain a gain map\n";
return AVIF_RESULT_INVALID_ARGUMENT;
}
if (arg_swap_base_) {
int depth = arg_image_read_.depth;
if (depth == 0) {
depth = image->gainMap->alternateHdrHeadroom.n == 0 ? 8 : 10;
}
ImagePtr new_base(avifImageCreateEmpty());
if (new_base == nullptr) {
return AVIF_RESULT_OUT_OF_MEMORY;
}
const avifResult result =
ChangeBase(*image, depth, image->yuvFormat, new_base.get());
if (result != AVIF_RESULT_OK) {
return result;
}
std::swap(image, new_base);
}
EncoderPtr encoder(avifEncoderCreate());
if (encoder == nullptr) {
return AVIF_RESULT_OUT_OF_MEMORY;
}
encoder->quality = arg_image_encode_.quality;
encoder->qualityAlpha = arg_image_encode_.quality_alpha;
encoder->qualityGainMap = arg_gain_map_quality_;
encoder->speed = arg_image_encode_.speed;
const avifResult result =
WriteAvif(image.get(), encoder.get(), arg_output_filename_);
if (result != AVIF_RESULT_OK) {
std::cout << "Failed to encode image: " << avifResultToString(result)
<< " (" << encoder->diag.error << ")\n";
return result;
}
return AVIF_RESULT_OK;
#endif // !defined(AVIF_ENABLE_JPEG_GAIN_MAP_CONVERSION)
}
} // namespace avif
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