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// Copyright 2023 Google LLC
// SPDX-License-Identifier: BSD-2-Clause
#include "extractgainmap_command.h"
#include "avif/avif_cxx.h"
#include "imageio.h"
namespace avif {
ExtractGainMapCommand::ExtractGainMapCommand()
: ProgramCommand("extractgainmap",
"Saves the gain map of an avif file as an image") {
argparse_.add_argument(arg_input_filename_, "input_filename");
argparse_.add_argument(arg_output_filename_, "output_filename");
arg_image_encode_.Init(argparse_, /*can_have_alpha=*/false);
}
avifResult ExtractGainMapCommand::Run() {
DecoderPtr decoder(avifDecoderCreate());
if (decoder == nullptr) {
return AVIF_RESULT_OUT_OF_MEMORY;
}
decoder->imageContentToDecode = AVIF_IMAGE_CONTENT_GAIN_MAP;
avifResult result =
ReadAvif(decoder.get(), arg_input_filename_, /*ignore_profile=*/true);
if (result != AVIF_RESULT_OK) {
return result;
}
if (decoder->image->gainMap == nullptr ||
decoder->image->gainMap->image == nullptr) {
std::cerr << "Input image " << arg_input_filename_
<< " does not contain a gain map\n";
return AVIF_RESULT_INVALID_ARGUMENT;
}
return WriteImage(decoder->image->gainMap->image, arg_output_filename_,
arg_image_encode_.quality, arg_image_encode_.speed);
}
} // namespace avif
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