VideoOutputIvtv Class Reference

#include <videoout_ivtv.h>

Inheritance diagram for VideoOutputIvtv:

Detailed Description

Implementation of video output for the Hauppage PVR 350 cards.

Definition at line 12 of file videoout_ivtv.h.


Public Member Functions
	VideoOutputIvtv ()
	~VideoOutputIvtv ()
bool	Init (int width, int height, float aspect, WId winid, int winx, int winy, int winw, int winh, WId embedid=0)
	Performs most of the initialization for VideoOutput.
void	PrepareFrame (VideoFrame *buffer, FrameScanType)
void	Show (FrameScanType)
bool	InputChanged (const QSize &input_size, float aspect, MythCodecID av_codec_id, void *codec_private)
	Tells video output to discard decoded frames and wait for new ones.
int	GetRefreshRate (void)
	Returns current display's frame refresh period in microseconds.
void	DrawUnusedRects (bool sync=true)
	Draws non-video portions of the screen.
void	UpdatePauseFrame (void)
	Updates frame displayed when video is paused.
void	ProcessFrame (VideoFrame frame, OSD osd, FilterChain filterList, NuppelVideoPlayer pipPlayer)
uint	WriteBuffer (unsigned char *buf, int count)
	Writes data to the decoder device.
int	Poll (int delay)
	Waits for decoder to be ready for more data.
void	Pause (void)
	Pauses decoding.
void	Start (int skip, int mute)
	Start decoding.
void	Stop (bool hide)
	Stops decoding.
void	Open (void)
	Opens decoder device.
void	Close (void)
	Closes decoder device.
void	SetFPS (float lfps)
void	ClearOSD (void)
bool	Play (float speed, bool normal, int mask)
	Initializes decoder parameters.
bool	Play (void)
void	NextPlay (float speed, bool normal, int mask)
void	Flush (void)
	Flushes out data already sent to decoder.
void	Step (void)
	Step through video one frame at a time.
long long	GetFramesPlayed (void)
	Returns number of frames played since last reset.
VideoFrame *	GetNextFreeFrame (bool with_lock=false, bool allow_unsafe=false)
	Blocks until it is possible to return a frame for decoding onto.
int	ValidVideoFrames (void) const
	Returns number of frames that are fully decoded.
Static Public Member Functions
static QStringList	GetAllowedRenderers (MythCodecID myth_codec_id, const QSize &video_dim)
Private Types
enum	eAlphaState { kAlpha_Solid, kAlpha_Local, kAlpha_Clear, kAlpha_Embedded }
Private Member Functions
void	ShowPip (VideoFrame frame, NuppelVideoPlayer pipplayer)
	Composites PiP image onto a video frame.
void	SetAlpha (eAlphaState newAlpha)
void	SetColorKey (int state, int color)
long long	GetFirmwareFramesPlayed (void)
	Returns number of frames decoded as reported by decoder.
Private Attributes
int	videofd
int	fbfd
float	fps
QString	videoDevice
unsigned int	driver_version
bool	has_v4l2_api
bool	has_pause_bug
QMutex	lock
int	mapped_offset
int	mapped_memlen
char *	mapped_mem
char *	pixels
int	stride
bool	lastcleared
bool	pipon
bool	osdon
char *	osdbuffer
char *	osdbuf_aligned
int	osdbufsize
int	osdbuf_revision
float	last_speed
int	internal_offset
int	frame_at_speed_change
bool	last_normal
int	last_mask
eAlphaState	alphaState
bool	old_fb_ioctl
int	fb_dma_ioctl
bool	color_key
bool	decoder_flush
bool	paused
VideoOutputIvtvPriv *	priv

Member Enumeration Documentation

enum VideoOutputIvtv::eAlphaState [private]

Enumerator:

kAlpha_Solid
kAlpha_Local
kAlpha_Clear
kAlpha_Embedded

Definition at line 72 of file videoout_ivtv.h.

Constructor & Destructor Documentation

VideoOutputIvtv::VideoOutputIvtv ( void )

Definition at line 117 of file videoout_ivtv.cpp.

VideoOutputIvtv::~VideoOutputIvtv ( )

Definition at line 146 of file videoout_ivtv.cpp.

Member Function Documentation

bool VideoOutputIvtv::Init	(	int	width,
		int	height,
		float	aspect,
		WId	winid,
		int	winx,
		int	winy,
		int	winw,
		int	winh,
		WId	embedid = `0`
	)			`[virtual]`

Performs most of the initialization for VideoOutput.

Returns:: true if successful, false otherwise.

Reimplemented from VideoOutput.

Definition at line 406 of file videoout_ivtv.cpp.

void VideoOutputIvtv::PrepareFrame	(	VideoFrame *	buffer,
		FrameScanType	t
	)			`[virtual]`

Implements VideoOutput.

Definition at line 674 of file videoout_ivtv.cpp.

void VideoOutputIvtv::Show ( FrameScanType ) [virtual]

Implements VideoOutput.

Definition at line 680 of file videoout_ivtv.cpp.

bool VideoOutputIvtv::InputChanged	(	const QSize &	input_size,
		float	aspect,
		MythCodecID	myth_codec_id,
		void *	codec_private
	)			`[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 384 of file videoout_ivtv.cpp.

int VideoOutputIvtv::GetRefreshRate ( void ) [virtual]

Returns current display's frame refresh period in microseconds.

e.g. 1000000 / frame_rate_in_Hz

Implements VideoOutput.

Definition at line 396 of file videoout_ivtv.cpp.

void VideoOutputIvtv::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 684 of file videoout_ivtv.cpp.

void VideoOutputIvtv::UpdatePauseFrame ( void ) [virtual]

Updates frame displayed when video is paused.

Implements VideoOutput.

Definition at line 688 of file videoout_ivtv.cpp.

void VideoOutputIvtv::ProcessFrame	(	VideoFrame *	frame,
		OSD *	osd,
		FilterChain *	filterList,
		NuppelVideoPlayer *	pipPlayer
	)			`[virtual]`

Implements VideoOutput.

Definition at line 779 of file videoout_ivtv.cpp.

uint VideoOutputIvtv::WriteBuffer	(	unsigned char *	buf,
		int	count
	)

Writes data to the decoder device.

Parameters:

	buf	buffer to write to the decoder
	len	number of bytes to write

Returns:: actual number of bytes written

Definition at line 1053 of file videoout_ivtv.cpp.

Referenced by IvtvDecoder::ReadWrite().

int VideoOutputIvtv::Poll ( int delay )

Waits for decoder to be ready for more data.

Parameters:

delay

milliseconds to wait before timing out.

Returns:: value returned by POSIX poll() function

Definition at line 1030 of file videoout_ivtv.cpp.

Referenced by IvtvDecoder::ReadWrite().

void VideoOutputIvtv::Pause ( void )

Pauses decoding.

Definition at line 999 of file videoout_ivtv.cpp.

Referenced by NuppelVideoPlayer::DoPause(), IvtvDecoder::SeekReset(), and IvtvDecoder::StepFrames().

void VideoOutputIvtv::Start	(	int	skip,
		int	mute
	)

Start decoding.

Parameters:

	skip	Sets GOP offset
	mute	If true mutes audio

Definition at line 922 of file videoout_ivtv.cpp.

Referenced by IvtvDecoder::ReadWrite(), and IvtvDecoder::SeekReset().

void VideoOutputIvtv::Stop ( bool hide )

Stops decoding.

Parameters:

hide

If true we hide the last video decoded frame.

Definition at line 960 of file videoout_ivtv.cpp.

Referenced by Close(), IvtvDecoder::ReadWrite(), and IvtvDecoder::SeekReset().

void VideoOutputIvtv::Open ( void )

Opens decoder device.

Definition at line 632 of file videoout_ivtv.cpp.

Referenced by Init().

void VideoOutputIvtv::Close ( void )

Closes decoder device.

Definition at line 594 of file videoout_ivtv.cpp.

Referenced by ~VideoOutputIvtv().

void VideoOutputIvtv::SetFPS ( float lfps ) [inline]

Definition at line 46 of file videoout_ivtv.h.

Referenced by NuppelVideoPlayer::IvtvVideoLoop().

void VideoOutputIvtv::ClearOSD ( void )

Definition at line 163 of file videoout_ivtv.cpp.

Referenced by Close(), and Init().

bool VideoOutputIvtv::Play	(	float	speed,
		bool	normal,
		int	mask
	)

Initializes decoder parameters.

Definition at line 1115 of file videoout_ivtv.cpp.

Referenced by NuppelVideoPlayer::DoPlay(), IvtvDecoder::ReadWrite(), and IvtvDecoder::SeekReset().

bool VideoOutputIvtv::Play ( void ) [inline]

Definition at line 51 of file videoout_ivtv.h.

void VideoOutputIvtv::NextPlay	(	float	speed,
		bool	normal,
		int	mask
	)			`[inline]`

Definition at line 52 of file videoout_ivtv.h.

Referenced by NuppelVideoPlayer::DoPlay().

void VideoOutputIvtv::Flush ( void )

Flushes out data already sent to decoder.

Definition at line 1179 of file videoout_ivtv.cpp.

Referenced by IvtvDecoder::ReadWrite(), and IvtvDecoder::SeekReset().

void VideoOutputIvtv::Step ( void )

Step through video one frame at a time.

Definition at line 1193 of file videoout_ivtv.cpp.

Referenced by IvtvDecoder::StepFrames().

long long VideoOutputIvtv::GetFramesPlayed ( void ) [virtual]

Returns number of frames played since last reset.

This adjust the value returned by GetFirmwareFramesPlayed(void) to report the number of frames played since playback started irrespective of current and past playback speeds.

Reimplemented from VideoOutput.

Definition at line 1105 of file videoout_ivtv.cpp.

Referenced by Play(), IvtvDecoder::SeekReset(), IvtvDecoder::StepFrames(), and IvtvDecoder::UpdateFramesPlayed().

VideoFrame* VideoOutputIvtv::GetNextFreeFrame	(	bool	with_lock = `false`,
		bool	allow_unsafe = `false`
	)			`[inline, virtual]`

Blocks until it is possible to return a frame for decoding onto.

Parameters:

	with_lock	if true frames are properly locked, but this means you must unlock them when you are done, so this is disabled by default.
	allow_unsafe	if true then that are queued for display can be returned as frames to decode onto, this defaults to false.

Reimplemented from VideoOutput.

Definition at line 58 of file videoout_ivtv.h.

int VideoOutputIvtv::ValidVideoFrames ( void ) const [virtual]

Returns number of frames that are fully decoded.

Reimplemented from VideoOutput.

Definition at line 401 of file videoout_ivtv.cpp.