Home    News    Components    Get ViTooKi    Documentation    Community    Developers    @sf.net  

Info

Last update:
12 Feb 2007

Documentation

Doxygen LXR

DVDIO Class Reference

* More...

#include <DVDIO.hpp>

Inheritance diagram for DVDIO:

List of all members.

Public Member Functions
	DVDIO (ESInfo *es_info, const char *file_name)
Frame *	getFrame ()
	returns a frame if one complete frame is available, otherwise null is returned.
bool	open ()
	opens the IO connection.
void	setESInfo (ESInfo *es)
ESInfo *	getESInfo ()
int	writeFrame (Frame *, ESInfo *out_es=NULL)
	returns the number of packets sent.
bool	close (bool immediate=false)
	closes the IO class.
bool	destroy ()
	delete the vob file
int	getBufferFillLevel () const
	returns a value from 0..100 indicating buffer usage
const char *	getURL () const
	returns a pointer to the local file name or an URL
Protected Attributes
ESInfo *	esinfo
char *	filename
AVFormatContext *	av_format_context
AVInputFormat *	av_input_format
AVFormatParameters *	av_format_parameters
int	streamID
u64	DTS

---

Detailed Description

*

Definition at line 59 of file DVDIO.hpp.

---

Member Function Documentation

bool DVDIO::close (  bool  immediate = false  )  [inline, virtual]

closes the IO class. Parameters: immediate  specifies, if (optional) buffered data should be read/sent to the client (==false), or immediately dumped (==true) Implements IO. Definition at line 87 of file DVDIO.hpp. Referenced by getFrame(). { state=CLOSED; /*assert("IMPLEMENT ME");*/ return true;};

Frame * DVDIO::getFrame (   )  [virtual]

returns a frame if one complete frame is available, otherwise null is returned. This function is typically blocking. Don't use a NULL return value to conclude STREAMEOF, always check with getState()! Implements IO. Definition at line 79 of file DVDIO.cpp. References close(), ESInfo::getStreamId(), Frame::getType(), ESInfo::isVisualStream(), Frame::setAU(), and Frame::setMediaTimeScale(). { if(state!=OPEN) return NULL; printf("============================================================\n"); printf("DVDIO::getFrame: \n"); if (( (this->currentFrameNumber > this->endFrameNumber) && (endFrameNumber!=0) )) { close(true); state=STREAMEOF; return NULL; } Frame *frame = NULL; AU *access_unit = new AU(); AVPacket avpacket_1, *avpacket = &avpacket_1; streamID = esinfo->getStreamId(); printf("Getting new Frame from streamID: %i\n",streamID); printf("IDs:"); // to get correct stream, brute @ moment, maybe improove! do { if(av_read_frame(av_format_context, avpacket)){ printf("Error reading avpacket!\n"); return NULL; } printf(" %i ",av_format_context->streams[avpacket->stream_index]->id ); if(av_format_context->streams[avpacket->stream_index]->id != streamID) { //printf("DVDIO::getFrame: Wrong ID -> dropping packet\n"); av_free_packet(avpacket); } } while (av_format_context->streams[avpacket->stream_index]->id != streamID); printf("\nCorrect ID found! -> "); // access_unit stuff copied from ffmp4io access_unit->size = avpacket->size; access_unit->cts = DTS; access_unit->dts = DTS; DTS+=((VideoESInfo*)esinfo)->getVOPTimeIncrement(); access_unit->payload = new u8[access_unit->size]; memcpy(access_unit->payload, avpacket->data, access_unit->size); // packet no longer needed! av_free_packet(avpacket); // create frame copied from ffmp4io if(esinfo->isVisualStream()) frame = new CompressedVideoFrame(Frame::NN_VOP, ((VideoESInfo*)esinfo)->getWidth(), ((VideoESInfo*)esinfo)->getHeight()); else if(esinfo->isAudioStream()) frame = new CompressedAudioFrame(Frame::NN_VOP); else //hack for any other stream type maybe subpic in the future! frame = new CompressedVideoFrame(Frame::NN_VOP,0,0); if (!frame->setAU(access_unit)) { //automatically detects frame type printf("Failed to set access unit at frame?\n"); } frame->setMediaTimeScale(esinfo->getMediaTimeScale()); // frame type output Frame::FrameType ft = frame->getType(); printf("FrameType = %s\n\n", Frame::VOPTypeToChar(ft)); currentFrameNumber++; return frame; }

bool DVDIO::open (   )  [virtual]

opens the IO connection. State is set to OPENING. Depending on the underlying QIODevice, a network connection or a file connection is established. When the connection is ready for use, State is OPEN Implements IO. Definition at line 63 of file DVDIO.cpp. { if(state!=OPEN) { int error; printf("DVDIO::open:\n"); printf("Opening VOB file \n"); av_register_all(); error = av_open_input_file(&av_format_context, filename, av_input_format, 0, av_format_parameters); state = OPEN; return (error==0); currentFrameNumber=0; } return true; };

int DVDIO::writeFrame (  Frame *  , ESInfo *  out_es = NULL )  [inline, virtual]

returns the number of packets sent. Returns 0 on error Implements IO. Definition at line 84 of file DVDIO.hpp. { assert(false); return 1;};

---

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

• DVDIO.hpp
• DVDIO.cpp

© ViTooKi 2003 :: [Lite version] Created with Doxygen