mirror of
https://github.com/RGBCube/serenity
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66c9696687
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.
96 lines
3.2 KiB
C++
96 lines
3.2 KiB
C++
/*
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* Copyright (c) 2023, Gregory Bertilson <Zaggy1024@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/Endian.h>
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#include <AK/NonnullOwnPtr.h>
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#include <AK/String.h>
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#include <AK/Traits.h>
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#include <AK/Vector.h>
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#include <LibVideo/DecoderError.h>
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#include "BoxStream.h"
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#include "Enums.h"
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namespace Gfx::ISOBMFF {
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// ISO/IEC 14496-12 Fifth Edition
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// 4.2 Object Structure
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struct BoxHeader {
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BoxType type { BoxType::None };
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u64 contents_size { 0 };
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};
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ErrorOr<BoxHeader> read_box_header(Stream& stream);
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struct Box {
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Box() = default;
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virtual ~Box() = default;
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virtual ErrorOr<void> read_from_stream(BoxStream&) { return {}; }
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virtual BoxType box_type() const { return BoxType::None; }
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virtual void dump(String const& prepend = {}) const;
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};
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using BoxList = Vector<NonnullOwnPtr<Box>>;
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struct FullBox : public Box {
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virtual ErrorOr<void> read_from_stream(BoxStream& stream) override;
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virtual void dump(String const& prepend = {}) const override;
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u8 version { 0 };
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u32 flags { 0 };
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};
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struct UnknownBox final : public Box {
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static ErrorOr<NonnullOwnPtr<UnknownBox>> create_from_stream(BoxType type, BoxStream& stream)
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{
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auto box = TRY(try_make<UnknownBox>(type, stream.remaining()));
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TRY(box->read_from_stream(stream));
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return box;
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}
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UnknownBox(BoxType type, size_t contents_size)
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: m_box_type(type)
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, m_contents_size(contents_size)
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{
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}
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virtual ~UnknownBox() override = default;
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virtual ErrorOr<void> read_from_stream(BoxStream&) override;
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virtual BoxType box_type() const override { return m_box_type; }
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virtual void dump(String const& prepend = {}) const override;
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private:
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BoxType m_box_type { BoxType::None };
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size_t m_contents_size { 0 };
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};
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#define BOX_SUBTYPE(BoxName) \
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static ErrorOr<NonnullOwnPtr<BoxName>> create_from_stream(BoxStream& stream) \
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{ \
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auto box = TRY(try_make<BoxName>()); \
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TRY(box->read_from_stream(stream)); \
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return box; \
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} \
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BoxName() = default; \
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virtual ~BoxName() override = default; \
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virtual ErrorOr<void> read_from_stream(BoxStream& stream) override; \
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virtual BoxType box_type() const override \
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{ \
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return BoxType::BoxName; \
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} \
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virtual void dump(String const& prepend = {}) const override;
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// 4.3 File Type Box
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struct FileTypeBox final : public FullBox {
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BOX_SUBTYPE(FileTypeBox);
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BrandIdentifier major_brand { BrandIdentifier::None };
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u32 minor_version;
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Vector<BrandIdentifier> compatible_brands;
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};
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}
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