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/*
* Copyright (c) 2021, Hunter Salyer <thefalsehonesty@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/ByteBuffer.h>
#include <AK/DeprecatedFlyString.h>
#include <AK/DeprecatedString.h>
#include <AK/HashMap.h>
#include <AK/NonnullOwnPtrVector.h>
#include <AK/OwnPtr.h>
#include <AK/Time.h>
#include <AK/Utf8View.h>
#include <LibVideo/Color/CodingIndependentCodePoints.h>
namespace Video::Matroska {
struct EBMLHeader {
DeprecatedString doc_type;
u32 doc_type_version;
};
class SegmentInformation {
public:
u64 timestamp_scale() const { return m_timestamp_scale; }
void set_timestamp_scale(u64 timestamp_scale) { m_timestamp_scale = timestamp_scale; }
Utf8View muxing_app() const { return Utf8View(m_muxing_app); }
void set_muxing_app(DeprecatedString muxing_app) { m_muxing_app = move(muxing_app); }
Utf8View writing_app() const { return Utf8View(m_writing_app); }
void set_writing_app(DeprecatedString writing_app) { m_writing_app = move(writing_app); }
Optional<double> duration_unscaled() const { return m_duration_unscaled; }
void set_duration_unscaled(double duration) { m_duration_unscaled.emplace(duration); }
Optional<Time> duration() const
{
if (!duration_unscaled().has_value())
return {};
return Time::from_nanoseconds(static_cast<i64>(static_cast<double>(timestamp_scale()) * duration_unscaled().value()));
}
private:
u64 m_timestamp_scale { 1'000'000 };
DeprecatedString m_muxing_app;
DeprecatedString m_writing_app;
Optional<double> m_duration_unscaled;
};
class TrackEntry {
public:
enum TrackType : u8 {
Invalid = 0,
Video = 1,
Audio = 2,
Complex = 3,
Logo = 16,
Subtitle = 17,
Buttons = 18,
Control = 32,
Metadata = 33,
};
enum class ColorRange : u8 {
Unspecified = 0,
Broadcast = 1,
Full = 2,
UseCICP = 3, // defined by MatrixCoefficients / TransferCharacteristics
};
struct ColorFormat {
ColorPrimaries color_primaries = ColorPrimaries::Unspecified;
TransferCharacteristics transfer_characteristics = TransferCharacteristics::Unspecified;
MatrixCoefficients matrix_coefficients = MatrixCoefficients::Unspecified;
u64 bits_per_channel = 0;
ColorRange range = ColorRange::Unspecified;
CodingIndependentCodePoints to_cicp() const
{
Video::VideoFullRangeFlag video_full_range_flag;
switch (range) {
case ColorRange::Full:
video_full_range_flag = Video::VideoFullRangeFlag::Full;
break;
case ColorRange::Broadcast:
video_full_range_flag = Video::VideoFullRangeFlag::Studio;
break;
case ColorRange::Unspecified:
case ColorRange::UseCICP:
// FIXME: Figure out what UseCICP should do here. Matroska specification did not
// seem to explain in the 'colour' section. When this is fixed, change
// replace_code_points_if_specified to match.
video_full_range_flag = Video::VideoFullRangeFlag::Unspecified;
break;
}
return { color_primaries, transfer_characteristics, matrix_coefficients, video_full_range_flag };
}
};
struct VideoTrack {
u64 pixel_width;
u64 pixel_height;
ColorFormat color_format;
};
struct AudioTrack {
u64 channels;
u64 bit_depth;
};
u64 track_number() const { return m_track_number; }
void set_track_number(u64 track_number) { m_track_number = track_number; }
u64 track_uid() const { return m_track_uid; }
void set_track_uid(u64 track_uid) { m_track_uid = track_uid; }
TrackType track_type() const { return m_track_type; }
void set_track_type(TrackType track_type) { m_track_type = track_type; }
DeprecatedFlyString language() const { return m_language; }
void set_language(DeprecatedFlyString const& language) { m_language = language; }
DeprecatedFlyString codec_id() const { return m_codec_id; }
void set_codec_id(DeprecatedFlyString const& codec_id) { m_codec_id = codec_id; }
double timestamp_scale() const { return m_timestamp_scale; }
void set_timestamp_scale(double timestamp_scale) { m_timestamp_scale = timestamp_scale; }
u64 codec_delay() const { return m_codec_delay; }
void set_codec_delay(u64 codec_delay) { m_codec_delay = codec_delay; }
u64 timestamp_offset() const { return m_timestamp_offset; }
void set_timestamp_offset(u64 timestamp_offset) { m_timestamp_offset = timestamp_offset; }
Optional<VideoTrack> video_track() const
{
if (track_type() != Video)
return {};
return m_video_track;
}
void set_video_track(VideoTrack video_track) { m_video_track = video_track; }
Optional<AudioTrack> audio_track() const
{
if (track_type() != Audio)
return {};
return m_audio_track;
}
void set_audio_track(AudioTrack audio_track) { m_audio_track = audio_track; }
private:
u64 m_track_number { 0 };
u64 m_track_uid { 0 };
TrackType m_track_type { Invalid };
DeprecatedFlyString m_language = "eng";
DeprecatedFlyString m_codec_id;
double m_timestamp_scale { 1 };
u64 m_codec_delay { 0 };
u64 m_timestamp_offset { 0 };
union {
VideoTrack m_video_track {};
AudioTrack m_audio_track;
};
};
class Block {
public:
enum Lacing : u8 {
None = 0b00,
XIPH = 0b01,
FixedSize = 0b10,
EBML = 0b11,
};
u64 track_number() const { return m_track_number; }
void set_track_number(u64 track_number) { m_track_number = track_number; }
Time timestamp() const { return m_timestamp; }
void set_timestamp(Time timestamp) { m_timestamp = timestamp; }
bool only_keyframes() const { return m_only_keyframes; }
void set_only_keyframes(bool only_keyframes) { m_only_keyframes = only_keyframes; }
bool invisible() const { return m_invisible; }
void set_invisible(bool invisible) { m_invisible = invisible; }
Lacing lacing() const { return m_lacing; }
void set_lacing(Lacing lacing) { m_lacing = lacing; }
bool discardable() const { return m_discardable; }
void set_discardable(bool discardable) { m_discardable = discardable; }
void set_frames(Vector<ReadonlyBytes>&& frames) { m_frames = move(frames); }
ReadonlyBytes const& frame(size_t index) const { return frames()[index]; }
u64 frame_count() const { return m_frames.size(); }
Vector<ReadonlyBytes> const& frames() const { return m_frames; }
private:
u64 m_track_number { 0 };
Time m_timestamp { Time::zero() };
bool m_only_keyframes { false };
bool m_invisible { false };
Lacing m_lacing { None };
bool m_discardable { true };
Vector<ReadonlyBytes> m_frames;
};
class Cluster {
public:
Time timestamp() const { return m_timestamp; }
void set_timestamp(Time timestamp) { m_timestamp = timestamp; }
private:
Time m_timestamp { Time::zero() };
};
class CueTrackPosition {
public:
u64 track_number() const { return m_track_number; }
void set_track_number(u64 track_number) { m_track_number = track_number; }
size_t cluster_position() const { return m_cluster_position; }
void set_cluster_position(size_t cluster_position) { m_cluster_position = cluster_position; }
size_t block_offset() const { return m_block_offset; }
void set_block_offset(size_t block_offset) { m_block_offset = block_offset; }
private:
u64 m_track_number { 0 };
size_t m_cluster_position { 0 };
size_t m_block_offset { 0 };
};
class CuePoint {
public:
Time timestamp() const { return m_timestamp; }
void set_timestamp(Time timestamp) { m_timestamp = timestamp; }
OrderedHashMap<u64, CueTrackPosition>& track_positions() { return m_track_positions; }
OrderedHashMap<u64, CueTrackPosition> const& track_positions() const { return m_track_positions; }
Optional<CueTrackPosition const&> position_for_track(u64 track_number) const { return m_track_positions.get(track_number); }
private:
Time m_timestamp = Time::min();
OrderedHashMap<u64, CueTrackPosition> m_track_positions;
};
}
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