jcs.org
Serenity Operating System
1/*
2 * Copyright (c) 2023, Nico Weber <thakis@chromium.org>
3 *
4 * SPDX-License-Identifier: BSD-2-Clause
5 */
6
7#include <LibCore/ArgsParser.h>
8#include <LibCore/File.h>
9#include <LibCore/MappedFile.h>
10#include <LibGfx/BMPWriter.h>
11#include <LibGfx/ImageDecoder.h>
12#include <LibGfx/PNGWriter.h>
13#include <LibGfx/PortableFormatWriter.h>
14#include <LibGfx/QOIWriter.h>
15
16ErrorOr<int> serenity_main(Main::Arguments arguments)
17{
18 Core::ArgsParser args_parser;
19
20 StringView in_path;
21 args_parser.add_positional_argument(in_path, "Path to input image file", "FILE");
22
23 StringView out_path;
24 args_parser.add_option(out_path, "Path to output image file", "output", 'o', "FILE");
25
26 bool ppm_ascii;
27 args_parser.add_option(ppm_ascii, "Convert to a PPM in ASCII", "ppm-ascii", {});
28
29 args_parser.parse(arguments);
30
31 if (out_path.is_empty()) {
32 warnln("-o is required");
33 return 1;
34 }
35
36 auto file = TRY(Core::MappedFile::map(in_path));
37 auto decoder = Gfx::ImageDecoder::try_create_for_raw_bytes(file->bytes());
38
39 // This uses ImageDecoder instead of Bitmap::load_from_file() to have more control
40 // over selecting a frame, access color profile data, and so on in the future.
41 auto frame = TRY(decoder->frame(0)).image;
42
43 ByteBuffer bytes;
44 if (out_path.ends_with(".bmp"sv, CaseSensitivity::CaseInsensitive)) {
45 bytes = TRY(Gfx::BMPWriter::encode(*frame));
46 } else if (out_path.ends_with(".png"sv, CaseSensitivity::CaseInsensitive)) {
47 bytes = TRY(Gfx::PNGWriter::encode(*frame));
48 } else if (out_path.ends_with(".ppm"sv, CaseSensitivity::CaseInsensitive)) {
49 auto const format = ppm_ascii ? Gfx::PortableFormatWriter::Options::Format::ASCII : Gfx::PortableFormatWriter::Options::Format::Raw;
50 bytes = TRY(Gfx::PortableFormatWriter::encode(*frame, Gfx::PortableFormatWriter::Options { .format = format }));
51 } else if (out_path.ends_with(".qoi"sv, CaseSensitivity::CaseInsensitive)) {
52 bytes = TRY(Gfx::QOIWriter::encode(*frame));
53 } else {
54 warnln("can only write .bmp, .png, .ppm, and .qoi");
55 return 1;
56 }
57
58 auto output_stream = TRY(Core::File::open(out_path, Core::File::OpenMode::Write));
59 TRY(output_stream->write_until_depleted(bytes));
60
61 return 0;
62}