A QDialog overlay for playing videos with a cyberpunk aesthetic. More...

#include <video_player.h>

Inheritance diagram for VideoPlayer:

Collaboration diagram for VideoPlayer:

Public Member Functions
double	GetGridOpacity () const
	Gets the current opacity value for the background grid effect.

double	GetScanlineOpacity () const
	Gets the current opacity value for the scanline effect.

void	ReleaseResources ()
	Stops the decoder thread, waits for it to finish, releases its resources, and resets the pointer. Ensures proper cleanup of the VideoDecoder instance.

void	SetGridOpacity (const double opacity)
	Sets the opacity for the background grid effect. Triggers an update() to repaint the widget.

void	SetScanlineOpacity (const double opacity)
	Sets the opacity for the scanline effect. Triggers an update() to repaint the widget.

	VideoPlayer (const QByteArray &video_data, const QString &mime_type, QWidget *parent=nullptr)
	Constructs a VideoPlayerOverlay dialog. Initializes the cyberpunk UI elements, sets window properties (title, size, style), creates timers for UI updates and effects, connects signals for controls, and schedules the player initialization.

	~VideoPlayer () override
	Destructor. Stops timers and ensures decoder resources are released by calling ReleaseResources().

Protected Member Functions
void	closeEvent (QCloseEvent *event) override
	Overridden close event handler. Stops timers and releases decoder resources before closing the dialog.

void	paintEvent (QPaintEvent *event) override
	Overridden paint event handler. Draws the background grid overlay.

Properties
double	gridOpacity
	Property controlling the opacity of the background grid effect. Animatable.

double	scanlineOpacity
	Property controlling the opacity of the scanline effect overlay. Animatable.

Private Slots
void	AdjustVolume (int volume) const
	Adjusts the playback volume via the VideoDecoder. Also updates the volume icon based on the new volume level.

void	HandleError (const QString &message) const
	Slot connected to the decoder's error signal. Logs the error and displays it in the status_label_ and video_label_.

void	HandleVideoInfo (int width, int height, double fps, double duration)
	Slot connected to the decoder's videoInfo signal. Stores video dimensions, duration, FPS. Sets the progress slider range. Updates info labels (resolution, bitrate, FPS, codec). Adjusts an update timer interval. Enables the HUD display. Extracts the first frame for a thumbnail.

void	InitializePlayer ()
	Initializes the VideoDecoder instance and connects its signals. Creates the decoder, connects signals for frames, errors, info, finish, and position. Starts the decoder thread. Called automatically after a short delay.

void	OnSliderPressed ()
	Slot called when the user presses the progress slider. Remembers the playback state, pauses playback temporarily, and updates the status label.

void	OnSliderReleased ()
	Slot called when the user releases the progress slider. Performs the seek operation based on the slider's final position. Resumes playback if it was active before seeking. Updates status label.

void	SeekVideo (int position) const
	Initiates a seek operation in the VideoDecoder. Converts the slider position (milliseconds) to seconds before calling decoder_->Seek().

void	ToggleMute ()
	Toggles the mute state. If currently unmuted, mutes and remembers the last volume. If muted, restores the last volume.

void	TogglePlayback ()
	Toggles the playback state (play/pause) or resets if finished. If finished, resets the decoder. Otherwise, calls Pause() on the decoder. Updates button text and status label accordingly. Triggers UI animations.

void	TriggerGlitch ()
	Slot called periodically by glitch_timer_. Sets a random intensity for the glitch effect applied in UpdateFrame() and schedules the next glitch event.

void	UpdateFrame (const QImage &frame)
	Slot connected to the decoder's frameReady signal. Displays the received video frame in the video_label_. Handles scaling, letterboxing, scanline effects, optional HUD elements (corners, timestamp, frame counter), and glitch effects.

void	UpdateSliderPosition (double position) const
	Slot connected to the decoder's positionChanged signal. Updates the progress slider's position and the time label display based on the decoder's current playback position. Blocks slider signals during update to prevent feedback loops.

void	UpdateTimeLabel (int position) const
	Slot called when the progress slider's value changes (e.g., user dragging). Updates the time label display based on the slider's current position (without seeking yet).

void	UpdateUI ()
	Slot called periodically by update_timer_. Updates UI elements like pulsing effects (scanline/grid opacity) and occasionally updates the status label with random "technical" info. Triggers widget repaint.

void	UpdateVolumeIcon (float volume) const
	Updates the volume button icon based on the current volume level. Shows different icons for muted, low volume, and high volume.

Private Attributes
QLabel *	bitrate_label_
	Label displaying estimated video bitrate.

QLabel *	codec_label_
	Label displaying detected video codec information.

double	current_glitch_intensity_ = 0.0
	Current intensity level for the random glitch effect.

std::shared_ptr< VideoDecoder >	decoder_
	Shared pointer to the VideoDecoder instance responsible for decoding and playback.

QLabel *	fps_label_
	Label displaying video frames per second.

int	frame_counter_ = 0
	Counter for the frame number displayed in the HUD.

QTimer *	glitch_timer_
	Timer for triggering random glitch effects.

double	grid_opacity_
	Current opacity value for the background grid effect (property).

int	last_volume_ = 100
	Stores the volume level before muting.

CyberPushButton *	play_button_
	Custom button for play/pause/replay control.

bool	playback_finished_ = false
	Flag indicating if playback has reached the end.

bool	playback_started_ = false
	Flag indicating if the decoder has started processing (video info received).

CyberSlider *	progress_slider_
	Custom slider for displaying and seeking playback progress.

QLabel *	resolution_label_
	Label displaying video resolution.

double	scanline_opacity_
	Current opacity value for the scanline effect (property).

bool	show_hud_ = false
	Flag indicating whether to draw the HUD elements (corners, etc.). Enabled after video info is ready.

bool	slider_dragging_ = false
	Flag indicating if the user is currently dragging the progress slider.

QLabel *	status_label_
	Label displaying playback status (Initializing, Ready, Playing, Paused, Error, Finished).

QImage	thumbnail_frame_
	Stores the first frame extracted from the video, used as a thumbnail/fallback.

QLabel *	time_label_
	Label displaying current time / total duration (MM:SS / MM:SS).

TranslationManager *	translator_ = nullptr
	Pointer to the translation manager for handling UI translations.

QTimer *	update_timer_
	Timer for triggering periodic UI updates (pulsing effects, status).

QByteArray	video_data_
	Stores the raw video data passed in the constructor.

double	video_duration_ = 0
	Total duration of the video in seconds. Set by HandleVideoInfo.

double	video_fps_ = 60.0
	Video frame rate in frames per second. Set by HandleVideoInfo.

int	video_height_ = 0
	Original height of the video in pixels. Set by HandleVideoInfo.

QLabel *	video_label_
	QLabel used to display the video frames.

int	video_width_ = 0
	Original width of the video in pixels. Set by HandleVideoInfo.

CyberPushButton *	volume_button_
	Custom button for toggling mute. Icon changes based on volume.

CyberSlider *	volume_slider_
	Custom slider for controlling playback volume.

bool	was_playing_ = false
	Stores whether playback was active before the user started dragging the slider.

Detailed Description

A QDialog overlay for playing videos with a cyberpunk aesthetic.

This class provides a full-featured video player in a separate dialog window. It uses VideoDecoder for decoding and playback, includes custom cyberpunk-styled UI controls (buttons, sliders), displays video information (codec, resolution, etc.), and incorporates visual effects like scanlines, grid overlays, and random glitches. It handles playback control (play/pause, seek, volume), manages decoder resources, and provides visual feedback on the player's status.

Constructor & Destructor Documentation

◆ VideoPlayer()

VideoPlayer::VideoPlayer	(	const QByteArray &	video_data,
		const QString &	mime_type,
		QWidget *	parent = nullptr )

explicit

Constructs a VideoPlayerOverlay dialog. Initializes the cyberpunk UI elements, sets window properties (title, size, style), creates timers for UI updates and effects, connects signals for controls, and schedules the player initialization.

Parameters

video_data	The raw video data to be played.
mime_type	The MIME type of the video data (currently unused).
parent	Optional parent widget.

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◆ ~VideoPlayer()

VideoPlayer::~VideoPlayer ( )

override

Destructor. Stops timers and ensures decoder resources are released by calling ReleaseResources().

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Member Function Documentation

◆ AdjustVolume

void VideoPlayer::AdjustVolume ( int volume ) const

privateslot

Adjusts the playback volume via the VideoDecoder. Also updates the volume icon based on the new volume level.

Parameters

volume The desired volume level (0-100, corresponding to 0.0-1.0 float).

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◆ closeEvent()

void VideoPlayer::closeEvent ( QCloseEvent * event )

overrideprotected

Overridden close event handler. Stops timers and releases decoder resources before closing the dialog.

Parameters

event The close event.

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◆ GetGridOpacity()

double VideoPlayer::GetGridOpacity ( ) const

inlinenodiscard

Gets the current opacity value for the background grid effect.

Returns: The grid opacity (0.0 to 1.0).

◆ GetScanlineOpacity()

double VideoPlayer::GetScanlineOpacity ( ) const

inlinenodiscard

Gets the current opacity value for the scanline effect.

Returns: The scanline opacity (0.0 to 1.0).

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◆ HandleError

void VideoPlayer::HandleError ( const QString & message ) const

privateslot

Slot connected to the decoder's error signal. Logs the error and displays it in the status_label_ and video_label_.

Parameters

message The error message from the decoder.

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◆ HandleVideoInfo

void VideoPlayer::HandleVideoInfo	(	int	width,
		int	height,
		double	fps,
		double	duration )

privateslot

Slot connected to the decoder's videoInfo signal. Stores video dimensions, duration, FPS. Sets the progress slider range. Updates info labels (resolution, bitrate, FPS, codec). Adjusts an update timer interval. Enables the HUD display. Extracts the first frame for a thumbnail.

Parameters

width	Video width in pixels.
height	Video height in pixels.
fps	Video frame rate.
duration	Video duration in seconds.

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◆ InitializePlayer

void VideoPlayer::InitializePlayer ( )

privateslot

Initializes the VideoDecoder instance and connects its signals. Creates the decoder, connects signals for frames, errors, info, finish, and position. Starts the decoder thread. Called automatically after a short delay.

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◆ OnSliderPressed

void VideoPlayer::OnSliderPressed ( )

privateslot

Slot called when the user presses the progress slider. Remembers the playback state, pauses playback temporarily, and updates the status label.

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◆ OnSliderReleased

void VideoPlayer::OnSliderReleased ( )

privateslot

Slot called when the user releases the progress slider. Performs the seek operation based on the slider's final position. Resumes playback if it was active before seeking. Updates status label.

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◆ paintEvent()

void VideoPlayer::paintEvent ( QPaintEvent * event )

overrideprotected

Overridden paint event handler. Draws the background grid overlay.

Parameters

event The paint event.

◆ ReleaseResources()

void VideoPlayer::ReleaseResources ( )

Stops the decoder thread, waits for it to finish, releases its resources, and resets the pointer. Ensures proper cleanup of the VideoDecoder instance.

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◆ SeekVideo

void VideoPlayer::SeekVideo ( int position ) const

privateslot

Initiates a seek operation in the VideoDecoder. Converts the slider position (milliseconds) to seconds before calling decoder_->Seek().

Parameters

position The target position in milliseconds.

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◆ SetGridOpacity()

void VideoPlayer::SetGridOpacity ( const double opacity )

inline

Sets the opacity for the background grid effect. Triggers an update() to repaint the widget.

Parameters

opacity The desired grid opacity (0.0 to 1.0).

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◆ SetScanlineOpacity()

void VideoPlayer::SetScanlineOpacity ( const double opacity )

inline

Sets the opacity for the scanline effect. Triggers an update() to repaint the widget.

Parameters

opacity The desired scanline opacity (0.0 to 1.0).

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◆ ToggleMute

void VideoPlayer::ToggleMute ( )

privateslot

Toggles the mute state. If currently unmuted, mutes and remembers the last volume. If muted, restores the last volume.

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◆ TogglePlayback

void VideoPlayer::TogglePlayback ( )

privateslot

Toggles the playback state (play/pause) or resets if finished. If finished, resets the decoder. Otherwise, calls Pause() on the decoder. Updates button text and status label accordingly. Triggers UI animations.

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◆ TriggerGlitch

void VideoPlayer::TriggerGlitch ( )

privateslot

Slot called periodically by glitch_timer_. Sets a random intensity for the glitch effect applied in UpdateFrame() and schedules the next glitch event.

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◆ UpdateFrame

void VideoPlayer::UpdateFrame ( const QImage & frame )

privateslot

Slot connected to the decoder's frameReady signal. Displays the received video frame in the video_label_. Handles scaling, letterboxing, scanline effects, optional HUD elements (corners, timestamp, frame counter), and glitch effects.

Parameters

frame The newly decoded video frame.

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◆ UpdateSliderPosition

void VideoPlayer::UpdateSliderPosition ( double position ) const

privateslot

Slot connected to the decoder's positionChanged signal. Updates the progress slider's position and the time label display based on the decoder's current playback position. Blocks slider signals during update to prevent feedback loops.

Parameters

position The current playback position in seconds.

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◆ UpdateTimeLabel

void VideoPlayer::UpdateTimeLabel ( int position ) const

privateslot

Slot called when the progress slider's value changes (e.g., user dragging). Updates the time label display based on the slider's current position (without seeking yet).

Parameters

position The slider's current value (milliseconds).

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◆ UpdateUI

void VideoPlayer::UpdateUI ( )

privateslot

Slot called periodically by update_timer_. Updates UI elements like pulsing effects (scanline/grid opacity) and occasionally updates the status label with random "technical" info. Triggers widget repaint.

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◆ UpdateVolumeIcon

void VideoPlayer::UpdateVolumeIcon ( float volume ) const

privateslot

Updates the volume button icon based on the current volume level. Shows different icons for muted, low volume, and high volume.

Parameters

volume The current volume level (0.0 to 1.0).

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Member Data Documentation

◆ bitrate_label_

QLabel* VideoPlayer::bitrate_label_

private

Label displaying estimated video bitrate.

◆ codec_label_

QLabel* VideoPlayer::codec_label_

private

Label displaying detected video codec information.

◆ current_glitch_intensity_

double VideoPlayer::current_glitch_intensity_ = 0.0

private

Current intensity level for the random glitch effect.

◆ decoder_

std::shared_ptr<VideoDecoder> VideoPlayer::decoder_

private

Shared pointer to the VideoDecoder instance responsible for decoding and playback.

◆ fps_label_

QLabel* VideoPlayer::fps_label_

private

Label displaying video frames per second.

◆ frame_counter_

int VideoPlayer::frame_counter_ = 0

private

Counter for the frame number displayed in the HUD.

◆ glitch_timer_

QTimer* VideoPlayer::glitch_timer_

private

Timer for triggering random glitch effects.

◆ grid_opacity_

double VideoPlayer::grid_opacity_

private

Current opacity value for the background grid effect (property).

◆ last_volume_

int VideoPlayer::last_volume_ = 100

private

Stores the volume level before muting.

◆ play_button_

CyberPushButton* VideoPlayer::play_button_

private

Custom button for play/pause/replay control.

◆ playback_finished_

bool VideoPlayer::playback_finished_ = false

private

Flag indicating if playback has reached the end.

◆ playback_started_

bool VideoPlayer::playback_started_ = false

private

Flag indicating if the decoder has started processing (video info received).

◆ progress_slider_

CyberSlider* VideoPlayer::progress_slider_

private

Custom slider for displaying and seeking playback progress.

◆ resolution_label_

QLabel* VideoPlayer::resolution_label_

private

Label displaying video resolution.

◆ scanline_opacity_

double VideoPlayer::scanline_opacity_

private

Current opacity value for the scanline effect (property).

◆ show_hud_

bool VideoPlayer::show_hud_ = false

private

Flag indicating whether to draw the HUD elements (corners, etc.). Enabled after video info is ready.

◆ slider_dragging_

bool VideoPlayer::slider_dragging_ = false

private

Flag indicating if the user is currently dragging the progress slider.

◆ status_label_

QLabel* VideoPlayer::status_label_

private

Label displaying playback status (Initializing, Ready, Playing, Paused, Error, Finished).

◆ thumbnail_frame_

QImage VideoPlayer::thumbnail_frame_

private

Stores the first frame extracted from the video, used as a thumbnail/fallback.

◆ time_label_

QLabel* VideoPlayer::time_label_

private

Label displaying current time / total duration (MM:SS / MM:SS).

◆ translator_

TranslationManager* VideoPlayer::translator_ = nullptr

private

Pointer to the translation manager for handling UI translations.

◆ update_timer_

QTimer* VideoPlayer::update_timer_

private

Timer for triggering periodic UI updates (pulsing effects, status).

◆ video_data_

QByteArray VideoPlayer::video_data_

private

Stores the raw video data passed in the constructor.

◆ video_duration_

double VideoPlayer::video_duration_ = 0

private

Total duration of the video in seconds. Set by HandleVideoInfo.

◆ video_fps_

double VideoPlayer::video_fps_ = 60.0

private

Video frame rate in frames per second. Set by HandleVideoInfo.

◆ video_height_

int VideoPlayer::video_height_ = 0

private

Original height of the video in pixels. Set by HandleVideoInfo.

◆ video_label_

QLabel* VideoPlayer::video_label_

private

QLabel used to display the video frames.

◆ video_width_

int VideoPlayer::video_width_ = 0

private

Original width of the video in pixels. Set by HandleVideoInfo.

◆ volume_button_

CyberPushButton* VideoPlayer::volume_button_

private

Custom button for toggling mute. Icon changes based on volume.

◆ volume_slider_

CyberSlider* VideoPlayer::volume_slider_

private

Custom slider for controlling playback volume.

◆ was_playing_

bool VideoPlayer::was_playing_ = false

private

Stores whether playback was active before the user started dragging the slider.

Property Documentation

◆ gridOpacity

double VideoPlayer::gridOpacity

readwrite

Property controlling the opacity of the background grid effect. Animatable.

◆ scanlineOpacity

double VideoPlayer::scanlineOpacity

readwrite

Property controlling the opacity of the scanline effect overlay. Animatable.

The documentation for this class was generated from the following files:

src/chat/files/video/player/video_player.h
src/chat/files/video/player/video_player.cpp

Public Member Functions

Protected Member Functions

Properties

Private Slots

Private Attributes

Detailed Description

Constructor & Destructor Documentation

◆ VideoPlayer()

◆ ~VideoPlayer()

Member Function Documentation

◆ AdjustVolume

◆ closeEvent()

◆ GetGridOpacity()

◆ GetScanlineOpacity()

◆ HandleError

◆ HandleVideoInfo

◆ InitializePlayer

◆ OnSliderPressed

◆ OnSliderReleased

◆ paintEvent()

◆ ReleaseResources()

◆ SeekVideo

◆ SetGridOpacity()

◆ SetScanlineOpacity()

◆ ToggleMute

◆ TogglePlayback

◆ TriggerGlitch

◆ UpdateFrame

◆ UpdateSliderPosition

◆ UpdateTimeLabel

◆ UpdateUI

◆ UpdateVolumeIcon

Member Data Documentation

◆ bitrate_label_

◆ codec_label_

◆ current_glitch_intensity_

◆ decoder_

◆ fps_label_

◆ frame_counter_

◆ glitch_timer_

◆ grid_opacity_

◆ last_volume_

◆ play_button_

◆ playback_finished_

◆ playback_started_

◆ progress_slider_

◆ resolution_label_

◆ scanline_opacity_

◆ show_hud_

◆ slider_dragging_

◆ status_label_

◆ thumbnail_frame_

◆ time_label_

◆ translator_

◆ update_timer_

◆ video_data_

◆ video_duration_

◆ video_fps_

◆ video_height_

◆ video_label_

◆ video_width_

◆ volume_button_

◆ volume_slider_

◆ was_playing_

Property Documentation

◆ gridOpacity

◆ scanlineOpacity