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/*
mpeg player plugin
Copyright (C) 1999 Martin Vogt
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Library General Public License as published by
the Free Software Foundation.
For more information look at the file COPYRIGHT in this package
*/
#include "mpegPlugin.h"
#include "../mpegplay/mpegVideoStream.h"
#include "../mpegplay/proto.h"
#include "../mpegplay/mpegVideoHeader.h"
using namespace std;
MpegPlugin::MpegPlugin() {
init();
}
MpegPlugin::~MpegPlugin() {
}
void MpegPlugin::init() {
lCalcLength=false;
mpegVideoHeader=NULL;
mpegVideoStream=NULL;
}
void MpegPlugin::decoder_loop() {
VideoDecoder* video=NULL;
if (input == NULL) {
cout << "MpegPlugin::decoder_loop input is NULL"<<endl;
exit(0);
}
if (output == NULL) {
cout << "MpegPlugin::decoder_loop output is NULL"<<endl;
exit(0);
}
mpegVideoHeader=new MpegVideoHeader();
mpegVideoStream=new MpegVideoStream(input);
PictureArray* pictureArray;
YUVPicture* pic;
int skipMode=_SYNC_TO_NONE;
// decode loop
while(runCheck()) {
switch(streamState) {
case _STREAM_STATE_FIRST_INIT :
if (mpegVideoStream->firstInitialize(mpegVideoHeader)==false) {
} else {
pluginInfo->setLength(getSongLength());
// now create pictureArray from the sequence
int width=mpegVideoHeader->getMB_Width()*16;
int height=mpegVideoHeader->getMB_Height()*16;
output->openWindow(width,height,(char*)"kmpg");
video=new VideoDecoder(mpegVideoStream,mpegVideoHeader);
setStreamState(_STREAM_STATE_INIT);
}
break;
case _STREAM_STATE_INIT :
// cout << "mpeg _STREAM_STATE_INI"<<endl;
if (skipMode==_SYNC_TO_GOP) {
if (mpegVideoStream->nextGOP()==false) {
continue;
}
video->resyncToI_Frame();
}
if (skipMode==_SYNC_TO_PIC) {
if (mpegVideoStream->nextPIC()==false) {
continue;
}
}
skipMode=_SYNC_TO_NONE;
setStreamState(_STREAM_STATE_PLAY);
break;
case _STREAM_STATE_PLAY :
pictureArray=output->lockPictureArray();
skipMode=video->mpegVidRsrc(pictureArray);
if (skipMode != _SYNC_TO_NONE) {
setStreamState(_STREAM_STATE_INIT);
}
pic=pictureArray->getYUVPictureCallback();
if (pic == NULL) {
// nothin to display
break;
}
output->unlockPictureArray(pictureArray);
pictureArray->setYUVPictureCallback(NULL);
break;
case _STREAM_STATE_WAIT_FOR_END:
// exit while loop
lDecoderLoop=false;
break;
default:
cout << "unknown stream state:"<<streamState<<endl;
}
}
output->flushWindow();
// copy sequence back if needed
if (video != NULL) {
delete video;
}
delete mpegVideoStream;
delete mpegVideoHeader;
mpegVideoStream=NULL;
mpegVideoHeader=NULL;
}
// here we can config our decoder with special flags
void MpegPlugin::config(const char* key,const char* value,void* user_data) {
if (strcmp(key,"-c")==0) {
lCalcLength=false;
}
if (strcmp(key,"decode")==0) {
if (strcmp(value,"true")==0) {
lDecode=true;
} else {
lDecode=false;
}
}
DecoderPlugin::config(key,value,user_data);
}
int MpegPlugin::getSongLength() {
int back=0;
return back;
}
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