KviOggTheoraEncoder Class Reference

An ogg/theora+irct encoder class; accepts argb32 images and binary text, outputs an ogg stream. More...

#include <KviOggTheoraEncoder.h>

Public Member Functions
void	addTextFrame (unsigned char *textPkt, int textSize)
	Appends a text frame to the stream. More...
void	addVideoFrame (QRgb *rgb32, int videoSize)
	Appends a video frame to the stream. More...
	KviOggTheoraEncoder (KviDataBuffer *stream, int iWidth=320, int iHeight=240, int iFpsN=5, int iFpsD=1, int iParN=4, int iParD=3)
	Constructs the KviOggTheoraEncoder object. More...
virtual	~KviOggTheoraEncoder ()
	Destroys the KviOggTheoraEncoder object. More...

Private Member Functions
int	fetch_and_process_video (quint8 *videoYuv, ogg_page *videopage, ogg_stream_state *to, th_enc_ctx *td, int videoflag)
	Internal function that processes a video frame to create an ogg page. More...
int	fetch_and_process_video_packet (quint8 *videoYuv, th_enc_ctx *td, ogg_packet *op)
	Internal function that processes a video frame to create an ogg packet. More...

Static Private Member Functions
static int	ilog (unsigned _v)
	Internal function used to calculate our granule shift. More...

Private Attributes
int	frame_state
KviOggTheoraGeometry	geometry
KviDataBuffer *	m_pStream
ogg_page	og
ogg_packet	op
th_comment	tc
th_enc_ctx *	td
ogg_int64_t	text_sofar
int	textflag
th_info	ti
ogg_stream_state	to
int	videoflag
quint8 *	videoYuv
size_t	y4m_aux_buf_read_sz
size_t	y4m_aux_buf_sz
size_t	y4m_dst_buf_read_sz
size_t	y4m_dst_buf_sz
unsigned char *	yuvframe [3]
ogg_stream_state	zo

Detailed Description

An ogg/theora+irct encoder class; accepts argb32 images and binary text, outputs an ogg stream.

Constructor & Destructor Documentation

KviOggTheoraEncoder::KviOggTheoraEncoder	(	KviDataBuffer *	stream,
		int	iWidth = 320,
		int	iHeight = 240,
		int	iFpsN = 5,
		int	iFpsD = 1,
		int	iParN = 4,
		int	iParD = 3
	)

Constructs the KviOggTheoraEncoder object.

Parameters

stream	the output stream object
iWidth	width of the stream
iHeight	height of the stream
iFpsN	frames per second: numerator
iFpsD	frames per second: denominator
iParN	aspect ratio: numerator
iParD	aspect ratio: denominator

Returns

KviOggTheoraEncoder

References KviOggIrcText::irct_encode_headerout(), KviOggIrcText::irct_encode_init(), and NULL.

KviOggTheoraEncoder::~KviOggTheoraEncoder ( )

virtual

Destroys the KviOggTheoraEncoder object.

References KviOggIrcText::irct_encode_clear().

Member Function Documentation

void KviOggTheoraEncoder::addTextFrame	(	unsigned char *	textPkt,
		int	textSize
	)

Appends a text frame to the stream.

Parameters

textPkt	buffer containing the text
textSize	size of the text buffer

Returns

void

References KviOggIrcText::irct_encode_packetout().

Referenced by DccVideoTheoraCodec::encodeText().

void KviOggTheoraEncoder::addVideoFrame	(	QRgb *	rgb32,
		int	videoSize
	)

Appends a video frame to the stream.

Parameters

rgb32	video frame as a matrix of rgb32 pixels
videoSize	size of the video frame

Returns

void

References rgb32toyuv444(), and YUV444_BPP.

Referenced by DccVideoTheoraCodec::encodeVideo().

int KviOggTheoraEncoder::fetch_and_process_video ( quint8 *  videoYuv, ogg_page *  videopage, ogg_stream_state *  to, th_enc_ctx *  td, int  videoflag  )

private

Internal function that processes a video frame to create an ogg page.

Returns

int

int KviOggTheoraEncoder::fetch_and_process_video_packet ( quint8 *  videoYuv, th_enc_ctx *  td, ogg_packet *  op  )

private

Internal function that processes a video frame to create an ogg packet.

Returns

int

int KviOggTheoraEncoder::ilog ( unsigned  _v )

staticprivate

Internal function used to calculate our granule shift.

Returns

int

Member Data Documentation

int KviOggTheoraEncoder::frame_state

private

Internal flag used in video frame processing

KviOggTheoraGeometry KviOggTheoraEncoder::geometry

private

Stream geometry definition

KviDataBuffer* KviOggTheoraEncoder::m_pStream

private

Stream pointer

ogg_page KviOggTheoraEncoder::og

private

One Ogg bitstream page. Vorbis packets are inside

ogg_packet KviOggTheoraEncoder::op

private

One raw packet of encoded data

th_comment KviOggTheoraEncoder::tc

private

Theora stream comments struct

th_enc_ctx* KviOggTheoraEncoder::td

private

Theora stream encoding struct

ogg_int64_t KviOggTheoraEncoder::text_sofar

private

Number of transmitted text frames

int KviOggTheoraEncoder::textflag

private

Internal flag used in text frame processing

th_info KviOggTheoraEncoder::ti

private

Theora stream info struct

ogg_stream_state KviOggTheoraEncoder::to

private

Take physical pages, weld into a logical stream of theora packets

int KviOggTheoraEncoder::videoflag

private

Internal flag used in video frame processing

quint8* KviOggTheoraEncoder::videoYuv

private

Yuv encoded surface pointer

size_t KviOggTheoraEncoder::y4m_aux_buf_read_sz

private

The amount to read into the auxiliary buffer

size_t KviOggTheoraEncoder::y4m_aux_buf_sz

private

The size of the auxiliary buffer

size_t KviOggTheoraEncoder::y4m_dst_buf_read_sz

private

The amount to read directly into the converted frame buffer

size_t KviOggTheoraEncoder::y4m_dst_buf_sz

private

The size of each converted frame buffer

unsigned char* KviOggTheoraEncoder::yuvframe[3]

private

Internal struct used in video frame processing

ogg_stream_state KviOggTheoraEncoder::zo

private

Take physical pages, weld into a logical stream of irct packets

---

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

• src/kvilib/ext/KviOggTheoraEncoder.h
• src/kvilib/ext/KviOggTheoraEncoder.cpp