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LibGfx: Add initial ISO BMFF parsing and a utility to print file info

Currently, the `isobmff` utility will only print the media file type
info from the FileTypeBox (major brand and compatible brands), as well
as the names and sizes of top-level boxes.
This commit is contained in:
Zaggy1024 2023-02-18 17:46:27 -06:00 committed by Sam Atkins
parent 9caa0bda7d
commit 66c9696687
13 changed files with 510 additions and 0 deletions

View file

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/*
* Copyright (c) 2023, Gregory Bertilson <Zaggy1024@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Endian.h>
#include <AK/Types.h>
namespace Gfx::ISOBMFF {
// Define all Box types:
#define ENUMERATE_ALL() \
ENUMERATE_ONE(FileTypeBox, ftyp) \
ENUMERATE_ONE(MetaBox, meta) \
ENUMERATE_ONE(MovieBox, moov) \
ENUMERATE_ONE(MediaDataBox, mdat) \
ENUMERATE_ONE(FreeBox, free)
constexpr u32 fourcc_to_number(char const fourcc[4])
{
return AK::convert_between_host_and_big_endian((fourcc[0] << 24) | (fourcc[1] << 16) | (fourcc[2] << 8) | fourcc[3]);
}
enum class BoxType : u32 {
None = 0,
#define ENUMERATE_ONE(box_name, box_4cc) box_name = fourcc_to_number(#box_4cc),
ENUMERATE_ALL()
#undef ENUMERATE_ONE
};
static Optional<StringView> box_type_to_string(BoxType type)
{
switch (type) {
#define ENUMERATE_ONE(box_name, box_4cc) \
case BoxType::box_name: \
return #box_name " ('" #box_4cc "')"sv;
ENUMERATE_ALL()
#undef ENUMERATE_ONE
default:
return {};
}
}
#undef ENUMERATE_ALL
// Define all FileTypeBox brand identifiers:
#define ENUMERATE_ALL() \
ENUMERATE_ONE(iso8) \
ENUMERATE_ONE(avif) \
ENUMERATE_ONE(avis) \
ENUMERATE_ONE(mif1) \
ENUMERATE_ONE(msf1) \
ENUMERATE_ONE(miaf) \
ENUMERATE_ONE(MA1A)
enum class BrandIdentifier : u32 {
None = 0,
#define ENUMERATE_ONE(brand_4cc) brand_4cc = fourcc_to_number(#brand_4cc),
ENUMERATE_ALL()
#undef ENUMERATE_ONE
};
static Optional<StringView> brand_identifier_to_string(BrandIdentifier type)
{
switch (type) {
#define ENUMERATE_ONE(brand_4cc) \
case BrandIdentifier::brand_4cc: \
return #brand_4cc##sv;
ENUMERATE_ALL()
#undef ENUMERATE_ONE
default:
return {};
}
}
#undef ENUMERATE_ALL
}
template<>
struct AK::Formatter<Gfx::ISOBMFF::BoxType> : Formatter<FormatString> {
ErrorOr<void> format(FormatBuilder& builder, Gfx::ISOBMFF::BoxType const& box_type)
{
auto string = Gfx::ISOBMFF::box_type_to_string(box_type);
if (string.has_value()) {
return Formatter<FormatString>::format(builder, "{}"sv, string.release_value());
}
return Formatter<FormatString>::format(builder, "Unknown Box ('{}')"sv, StringView((char const*)&box_type, 4));
}
};
template<>
struct AK::Formatter<Gfx::ISOBMFF::BrandIdentifier> : Formatter<FormatString> {
ErrorOr<void> format(FormatBuilder& builder, Gfx::ISOBMFF::BrandIdentifier const& brand_identifier)
{
auto string = Gfx::ISOBMFF::brand_identifier_to_string(brand_identifier);
if (string.has_value()) {
return Formatter<FormatString>::format(builder, "{}"sv, string.release_value());
}
return Formatter<FormatString>::format(builder, "{}"sv, StringView((char const*)&brand_identifier, 4));
}
};