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LibGfx: Simplify ISOBMFF enums with RIFF ChunkID

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RIFF ChunkID can (and should) be used as "just" a FourCC type, which
simplifies this code greatly.
This commit is contained in:
kleines Filmröllchen 2023-10-12 22:40:41 +02:00 committed by Andrew Kaster
parent 19a1369a70
commit eb305c6974
Notes: sideshowbarker 2024-07-16 16:23:32 +09:00 
Author: https://github.com/kleinesfilmroellchen
Commit: https://github.com/SerenityOS/serenity/commit/eb305c6974
Pull-request: https://github.com/SerenityOS/serenity/pull/22554
Reviewed-by: https://github.com/ADKaster ✅
1 changed files with 10 additions and 44 deletions
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54
Userland/Libraries/LibGfx/ImageFormats/ISOBMFF/Enums.h
View file

@ -8,6 +8,7 @@
#include <AK/Endian.h>
#include <AK/Types.h>
#include <LibRIFF/ChunkID.h>
namespace Gfx::ISOBMFF {
@ -19,35 +20,23 @@ namespace Gfx::ISOBMFF {
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),
#define ENUMERATE_ONE(box_name, box_4cc) box_name = RIFF::ChunkID(#box_4cc).as_big_endian_number(),
ENUMERATE_ALL()
#undef ENUMERATE_ONE
};
static Optional<StringView> box_type_to_string(BoxType type)
static bool is_valid_box_type(BoxType type)
{
switch (type) {
#define ENUMERATE_ONE(box_name, box_4cc) \
case BoxType::box_name: \
return #box_name " ('" #box_4cc "')"sv;
return (
#define ENUMERATE_ONE(box_name, _) type == BoxType::box_name ||
ENUMERATE_ALL()
#undef ENUMERATE_ONE
default:
return {};
}
false);
}
#undef ENUMERATE_ALL
@ -65,29 +54,13 @@ static Optional<StringView> box_type_to_string(BoxType type)
enum class BrandIdentifier : u32 {
None = 0,
#define ENUMERATE_ONE(brand_4cc) brand_4cc = fourcc_to_number(#brand_4cc),
#define ENUMERATE_ONE(brand_4cc) brand_4cc = RIFF::ChunkID(#brand_4cc).as_big_endian_number(),
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
}
@ -96,11 +69,8 @@ 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));
StringView format_string = Gfx::ISOBMFF::is_valid_box_type(box_type) ? "('{}')"sv : "Unknown Box ('{}')"sv;
return Formatter<FormatString>::format(builder, format_string, RIFF::ChunkID::from_big_endian_number(to_underlying(box_type)));
}
};
@ -108,10 +78,6 @@ 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));
return Formatter<FormatString>::format(builder, "{}"sv, RIFF::ChunkID::from_big_endian_number(to_underlying(brand_identifier)));
}
};