VideoOutputXv Class Reference

Supports common video output methods used with X11 Servers. More...

#include <videoout_xv.h>

Inheritance diagram for VideoOutputXv:

Public Member Functions
	VideoOutputXv ()
	~VideoOutputXv ()
bool	Init (int width, int height, float aspect, WId winid, const QRect &win_rect, MythCodecID codec_id)
bool	SetDeinterlacingEnabled (bool)
	Attempts to enable/disable deinterlacing using existing deinterlace method when enabling.
bool	SetupDeinterlace (bool interlaced, const QString &ovrf="")
	Attempts to enable or disable deinterlacing.
bool	ApproveDeintFilter (const QString &filtername) const
	Approves bobdeint filter for XVideo and otherwise defers to VideoOutput::ApproveDeintFilter(const QString&).
void	ProcessFrame (VideoFrame frame, OSD osd, FilterChain *filterList, const PIPMap &pipPlayers, FrameScanType scan)
void	PrepareFrame (VideoFrame , FrameScanType, OSD osd)
void	Show (FrameScanType)
void	ClearAfterSeek (void)
	Tells video output to toss decoded buffers due to a seek.
void	WindowResized (const QSize &new_size)
void	MoveResize (void)
	performs all the calculations for video framing and any resizing.
bool	InputChanged (const QSize &input_size, float aspect, MythCodecID av_codec_id, void *codec_private, bool &aspect_only)
	Tells video output to discard decoded frames and wait for new ones.
void	Zoom (ZoomDirection direction)
	Sets up zooming into to different parts of the video, the zoom is actually applied in MoveResize().
void	VideoAspectRatioChanged (float aspect)
	Calls SetVideoAspectRatio(float aspect), then calls MoveResize() to apply changes.
void	EmbedInWidget (const QRect &rect)
	Tells video output to embed video in an existing window.
void	StopEmbedding (void)
	Tells video output to stop embedding video in an existing window.
void	MoveResizeWindow (QRect new_rect)
void	DrawUnusedRects (bool sync=true)
	Draws non-video portions of the screen.
virtual void	UpdatePauseFrame (int64_t &default_tc)
	Updates frame displayed when video is paused.
int	SetPictureAttribute (PictureAttribute attribute, int newValue)
	Sets a specified picture attribute.
void	InitPictureAttributes (void)
virtual bool	IsPIPSupported (void) const
virtual bool	IsPBPSupported (void) const
virtual bool	NeedExtraAudioDecode (void) const
virtual QRect	GetPIPRect (PIPLocation location, MythPlayer *pipplayer=NULL, bool do_pixel_adj=true) const
	returns QRect of PIP based on PIPLocation
VOSType	VideoOutputSubType () const
virtual MythPainter *	GetOSDPainter (void)
Static Public Member Functions
static void	GetRenderOptions (render_opts &opts, QStringList &cpudeints)
static MythCodecID	GetBestSupportedCodec (uint stream_type)
static int	GrabSuitableXvPort (MythXDisplay disp, Window root, MythCodecID type, uint width, uint height, bool &xvsetdefaults, QString adaptor_name=NULL)
	Internal function used to grab a XVideo port with the desired properties.
static void	UngrabXvPort (MythXDisplay *disp, int port)
	Internal function used to release an XVideo port.
static QStringList	GetAllowedRenderers (MythCodecID myth_codec_id, const QSize &video_dim)
Private Member Functions
virtual bool	hasFullScreenOSD (void) const
void	DiscardFrame (VideoFrame *)
	Frame is ready to be reused by decoder added to the done or available list.
void	DiscardFrames (bool next_frame_keyframe)
	Releases all frames not being actively displayed from any queue onto the queue of frames ready for decoding onto.
void	PrepareFrameXv (VideoFrame *)
void	PrepareFrameMem (VideoFrame *, FrameScanType)
void	ShowXVideo (FrameScanType scan)
int	SetXVPictureAttribute (PictureAttribute attribute, int newValue)
void	InitColorKey (bool turnoffautopaint)
	Initializes color keying support used by XVideo output methods.
bool	InitVideoBuffers (bool use_xv, bool use_shm)
	Creates and initializes video buffers.
bool	InitXVideo (void)
	Creates and initializes video buffers.
bool	InitXShm (void)
	Creates and initializes video buffers.
bool	InitXlib (void)
	Creates and initializes video buffers.
bool	InitOSD (void)
bool	CreateBuffers (VOSType subtype)
vector< unsigned char * >	CreateShmImages (uint num, bool use_xv)
	Creates Shared Memory Images.
void	CreatePauseFrame (VOSType subtype)
	Creates an extra frame for pause.
void	DeleteBuffers (VOSType subtype, bool delete_pause_frame)
bool	InitSetupBuffers (void)
Private Attributes
VOSType	video_output_subtype
QMutex	global_lock
Window	XJ_win
Window	XJ_curwin
MythXDisplay *	disp
unsigned long	XJ_letterbox_colour
bool	XJ_started
VideoFrame	av_pause_frame
vector< XShmSegmentInfo * >	XJ_shm_infos
vector< YUVInfo >	XJ_yuv_infos
XImage *	XJ_non_xv_image
long long	non_xv_frames_shown
int	non_xv_show_frame
int	non_xv_fps
PixelFormat	non_xv_av_format
time_t	non_xv_stop_time
int	xv_port
int	xv_hue_base
int	xv_colorkey
bool	xv_draw_colorkey
int	xv_chroma
bool	xv_set_defaults
buffer_map_t	xv_buffers
bool	xv_need_bobdeint_repaint
bool	xv_use_picture_controls
QMap< PictureAttribute, int >	xv_attribute_min
QMap< PictureAttribute, int >	xv_attribute_max
QMap< PictureAttribute, int >	xv_attribute_def
ChromaKeyOSD *	chroma_osd
Friends
class	ChromaKeyOSD

Detailed Description

Supports common video output methods used with X11 Servers.

This class supports XVideo with color transform and scaling acceleration. When this is not available, we also try to use X Shared memory, and if that fails we try standard Xlib output.

See also:: VideoOutput, VideoBuffers

Definition at line 28 of file videoout_xv.h.

Constructor & Destructor Documentation

VideoOutputXv::VideoOutputXv ( )

Definition at line 136 of file videoout_xv.cpp.

VideoOutputXv::~VideoOutputXv ( )

Definition at line 161 of file videoout_xv.cpp.

Member Function Documentation

void VideoOutputXv::GetRenderOptions	(	render_opts &	opts,
		QStringList &	cpudeints
	)			`[static]`

Definition at line 79 of file videoout_xv.cpp.

bool VideoOutputXv::Init	(	int	width,
		int	height,
		float	aspect,
		WId	winid,
		const QRect &	win_rect,
		MythCodecID	codec_id
	)			`[virtual]`

Reimplemented from VideoOutput.

Definition at line 873 of file videoout_xv.cpp.

bool VideoOutputXv::SetDeinterlacingEnabled ( bool enable ) [virtual]

Attempts to enable/disable deinterlacing using existing deinterlace method when enabling.

Reimplemented from VideoOutput.

Definition at line 995 of file videoout_xv.cpp.

bool VideoOutputXv::SetupDeinterlace	(	bool	i,
		const QString &	ovrf = `""`
	)			`[virtual]`

Attempts to enable or disable deinterlacing.

Returns:: true if successful, false otherwise.

Parameters:

overridefilter

optional, explicitly use this nondefault deint filter

Reimplemented from VideoOutput.

Definition at line 1002 of file videoout_xv.cpp.

bool VideoOutputXv::ApproveDeintFilter ( const QString & filtername ) const [virtual]

Approves bobdeint filter for XVideo and otherwise defers to VideoOutput::ApproveDeintFilter(const QString&).

Approves all deinterlace filters, except ones which must be supported by a specific video output class.

Returns:: whether current video output supports a specific filter.

Reimplemented from VideoOutput.

Definition at line 1017 of file videoout_xv.cpp.

void VideoOutputXv::ProcessFrame	(	VideoFrame *	frame,
		OSD *	osd,
		FilterChain *	filterList,
		const PIPMap &	pipPlayers,
		FrameScanType	scan
	)			`[virtual]`

Implements VideoOutput.

Definition at line 1783 of file videoout_xv.cpp.

void VideoOutputXv::PrepareFrame	(	VideoFrame *	buffer,
		FrameScanType	scan,
		OSD *	osd
	)			`[virtual]`

Implements VideoOutput.

Definition at line 1481 of file videoout_xv.cpp.

void VideoOutputXv::Show ( FrameScanType scan ) [virtual]

Implements VideoOutput.

Definition at line 1620 of file videoout_xv.cpp.

void VideoOutputXv::ClearAfterSeek ( void ) [virtual]

Tells video output to toss decoded buffers due to a seek.

Reimplemented from VideoOutput.

Definition at line 1342 of file videoout_xv.cpp.

void VideoOutputXv::WindowResized ( const QSize & new_size ) [virtual]

Reimplemented from VideoOutput.

Definition at line 218 of file videoout_xv.cpp.

void VideoOutputXv::MoveResize ( void ) [virtual]

performs all the calculations for video framing and any resizing.

First we apply playback over/underscanning and offsetting, then we letterbox settings, and finally we apply manual scale & move properties for "Zoom Mode".

See also:: Zoom(ZoomDirection), ToggleAdjustFill(int)

Reimplemented from VideoOutput.

Definition at line 210 of file videoout_xv.cpp.

Referenced by EmbedInWidget(), Init(), InputChanged(), StopEmbedding(), WindowResized(), and Zoom().

bool VideoOutputXv::InputChanged	(	const QSize &	input_size,
		float	aspect,
		MythCodecID	myth_codec_id,
		void *	codec_private,
		bool &	aspect_only
	)			`[virtual]`

Tells video output to discard decoded frames and wait for new ones.

Bug:: We set the new width height and aspect ratio here, but we should do this based on the new video frames in Show().

Reimplemented from VideoOutput.

Definition at line 240 of file videoout_xv.cpp.

void VideoOutputXv::Zoom ( ZoomDirection direction ) [virtual]

Sets up zooming into to different parts of the video, the zoom is actually applied in MoveResize().

See also:: ToggleAdjustFill(AdjustFillMode)

Reimplemented from VideoOutput.

Definition at line 202 of file videoout_xv.cpp.

void VideoOutputXv::VideoAspectRatioChanged ( float aspect ) [virtual]

Calls SetVideoAspectRatio(float aspect), then calls MoveResize() to apply changes.

Parameters:

aspect

video aspect ratio to use

Reimplemented from VideoOutput.

Definition at line 1746 of file videoout_xv.cpp.

Referenced by InputChanged().

void VideoOutputXv::EmbedInWidget ( const QRect & rect ) [virtual]

Tells video output to embed video in an existing window.

See also:: StopEmbedding()

Reimplemented from VideoOutput.

Definition at line 1307 of file videoout_xv.cpp.

void VideoOutputXv::StopEmbedding ( void ) [virtual]

Tells video output to stop embedding video in an existing window.

See also:: EmbedInWidget(const QRect&)

Reimplemented from VideoOutput.

Definition at line 1316 of file videoout_xv.cpp.

void VideoOutputXv::MoveResizeWindow ( QRect new_rect ) [virtual]

Implements VideoOutput.

Definition at line 310 of file videoout_xv.cpp.

void VideoOutputXv::DrawUnusedRects ( bool sync = true ) [virtual]

Draws non-video portions of the screen.

Parameters:

sync

if set any queued up draws are sent immediately to the graphics context and we block until they have completed.

Implements VideoOutput.

Definition at line 1640 of file videoout_xv.cpp.

Referenced by Show().

void VideoOutputXv::UpdatePauseFrame ( int64_t & disp_timecode ) [virtual]

Updates frame displayed when video is paused.

Implements VideoOutput.

Definition at line 1752 of file videoout_xv.cpp.

int VideoOutputXv::SetPictureAttribute	(	PictureAttribute	attribute,
		int	newValue
	)			`[virtual]`

Sets a specified picture attribute.

Parameters:

	attribute	Picture attribute to set.
	newValue	Value to set attribute to.

Returns:: Set value if it succeeds, -1 if it does not.

Reimplemented from VideoOutput.

Definition at line 1838 of file videoout_xv.cpp.

void VideoOutputXv::InitPictureAttributes ( void ) [virtual]

Reimplemented from VideoOutput.

Definition at line 1881 of file videoout_xv.cpp.

Referenced by InitSetupBuffers().

virtual bool VideoOutputXv::IsPIPSupported ( void ) const [inline, virtual]

Reimplemented from VideoOutput.

Definition at line 71 of file videoout_xv.h.

virtual bool VideoOutputXv::IsPBPSupported ( void ) const [inline, virtual]

Reimplemented from VideoOutput.

Definition at line 73 of file videoout_xv.h.

virtual bool VideoOutputXv::NeedExtraAudioDecode ( void ) const [inline, virtual]

Reimplemented from VideoOutput.

Definition at line 75 of file videoout_xv.h.

QRect VideoOutputXv::GetPIPRect	(	PIPLocation	location,
		MythPlayer *	pipplayer = `NULL`,
		bool	do_pixel_adj = `true`
	)			const `[virtual]`

returns QRect of PIP based on PIPLocation

Reimplemented from VideoOutput.

Definition at line 1923 of file videoout_xv.cpp.

MythCodecID VideoOutputXv::GetBestSupportedCodec ( uint stream_type ) [static]

Returns:: MythCodecID for the best supported codec on the main display.

Definition at line 754 of file videoout_xv.cpp.

int VideoOutputXv::GrabSuitableXvPort	(	MythXDisplay *	disp,
		Window	root,
		MythCodecID	mcodecid,
		uint	width,
		uint	height,
		bool &	xvsetdefaults,
		QString *	adaptor_name = `NULL`
	)			`[static]`