ivand_qmul@125: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
ivand_qmul@125: 
ivand_qmul@125: /*   
ivand_qmul@125: 	Sound Access
ivand_qmul@125: 		EASAIER client application.
ivand_qmul@125: 		Queen Mary 2007. Ivan Damnjanovic.
ivand_qmul@125: 
ivand_qmul@125: 	This program is free software; you can redistribute it and/or
ivand_qmul@125: 	modify it under the terms of the GNU General Public License as
ivand_qmul@125: 	published by the Free Software Foundation; either version 2 of the
ivand_qmul@125: 	License, or (at your option) any later version.  See the file
ivand_qmul@125: 	COPYING included with this distribution for more information.
ivand_qmul@125: */
ivand_qmul@125: 
ivand_qmul@125: #ifdef HAVE_FFMPEG
ivand_qmul@125: 
ivand_qmul@125: 
ivand_qmul@125: //#include "system/System.h"
ivand_qmul@125: 
ivand_qmul@125: #include <sys/types.h>
ivand_qmul@125: #include <sys/stat.h>
ivand_qmul@125: #include <fcntl.h>
ivand_qmul@125: 
ivand_qmul@125: #include <iostream>
ivand_qmul@125: 
ivand_qmul@125: #include <QApplication>
ivand_qmul@125: #include <QFileInfo>
ivand_qmul@125: #include <QProgressDialog>
ivand_qmul@125: 
ivand_qmul@125: #include "VideoFileReader.h"
ivand_qmul@125: 
ivand_qmul@129: #ifdef WIN32
ivand_qmul@129: #include <Windows.h>
ivand_qmul@129: #endif
ivand_qmul@129: long long countFreq;
ivand_qmul@125: VideoFileReader::VideoFileReader(QString path, bool showProgress, CacheMode mode) :
ivand_qmul@125:     CodedAudioFileReader(mode),
ivand_qmul@125:     m_path(path)
ivand_qmul@125: {
ivand_qmul@125:     m_frameCount = 0;
ivand_qmul@125:     m_channelCount = 0;
ivand_qmul@125:     m_sampleRate = 0;
ivand_qmul@125:     m_fileSize = 0;
ivand_qmul@125:     m_bitrateNum = 0;
ivand_qmul@125:     m_bitrateDenom = 0;
ivand_qmul@125:     m_cancelled = false;
ivand_qmul@125: 
ivand_qmul@125:     struct stat stat;
ivand_qmul@125:     if (::stat(path.toLocal8Bit().data(), &stat) == -1 || stat.st_size == 0) {
ivand_qmul@125: 	m_error = QString("File %1 does not exist.").arg(path);
ivand_qmul@125: 	return;
ivand_qmul@125:     }
ivand_qmul@125: 	
ivand_qmul@125: 	// standard SDL initialization stuff
ivand_qmul@125:     if(SDL_Init(SDL_INIT_VIDEO|SDL_DOUBLEBUF|SDL_INIT_AUDIO) < 0) {
ivand_qmul@125:         m_error = QString("Failed to open file %1 for reading.").arg(SDL_GetError());
ivand_qmul@125:         return;
ivand_qmul@125:     }
ivand_qmul@125:     m_fileSize = stat.st_size;
ivand_qmul@125: 
ivand_qmul@125:     
ivand_qmul@125:     // open file from arg[1]
ivand_qmul@125:     film = SDL_ffmpegOpen(path.toLocal8Bit().data());
ivand_qmul@125:     if (path.endsWith("mpg")) film->delay=1;
ivand_qmul@125: 	if (path.endsWith("divx")) film->delay=1;
ivand_qmul@125: 	if(!film) 
ivand_qmul@125: 			{
ivand_qmul@125: 				m_error = QString("Failed to open file %1 for reading.").arg(path);
ivand_qmul@125: 				return;
ivand_qmul@125: 			}	
ivand_qmul@125:   // print some info on detected stream to output
ivand_qmul@125:     film->skipAudio=0;
ivand_qmul@125: 	film->skipVideo=0;
ivand_qmul@125: 	int s;
ivand_qmul@125:     SDL_ffmpegStream *str;
ivand_qmul@125: 	for(s = 0; s<film->VStreams; s++)
ivand_qmul@125: 		str = SDL_ffmpegGetVideoStream(film, s);
ivand_qmul@125: 	SDL_ffmpegSelectVideoStream(film, 0);
ivand_qmul@125: 	film->skipVideo=1;
ivand_qmul@125:     for(s = 0; s<film->AStreams; s++) 
ivand_qmul@125:         str = SDL_ffmpegGetAudioStream(film, s);
ivand_qmul@125: 
ivand_qmul@125: 	SDL_ffmpegSelectAudioStream(film, 0);
ivand_qmul@125: 
ivand_qmul@125: 
ivand_qmul@125:     if (showProgress) {
ivand_qmul@125: 		m_progress = new QProgressDialog
ivand_qmul@125: 	    (QObject::tr("Decoding %1...").arg(QFileInfo(path).fileName()),
ivand_qmul@125: 	    QObject::tr("Stop"), 0, 100);
ivand_qmul@125: 		m_progress->hide();
ivand_qmul@125:     }
ivand_qmul@125: 
ivand_qmul@125: 	m_sampleRate=str->sampleRate;
ivand_qmul@125: 	int channels=str->channels;
ivand_qmul@125: 	m_channelCount=channels;
ivand_qmul@125: 	SDL_ffmpegPause(film, 0);
ivand_qmul@125: 	SDL_ffmpegStartDecoding(film);
ivand_qmul@125: 	
ivand_qmul@125: 	if (!decodeAudio(film)) {
ivand_qmul@125: 		m_error = QString("Failed to decode audio from file %1 for reading.").arg(path);
ivand_qmul@125: 		return;
ivand_qmul@125: 	}	
ivand_qmul@125: 	film->skipAudio=1;
ivand_qmul@125: 	//SDL_ffmpegSeek(film, 0);
ivand_qmul@125:     //SDL_ffmpegStopDecoding(film);
ivand_qmul@125: 	SDL_Delay(5);
ivand_qmul@125: 	film->skipVideo=0;
ivand_qmul@125: 	
ivand_qmul@125: 	film->videoThread=SDL_CreateThread(videoPlayCall,this);
ivand_qmul@125: 	
ivand_qmul@125:  
ivand_qmul@125:     
ivand_qmul@125:     
ivand_qmul@125: 
ivand_qmul@125:     if (showProgress) {
ivand_qmul@125: 	delete m_progress;
ivand_qmul@125: 	m_progress = 0;
ivand_qmul@125:     }
ivand_qmul@125: 
ivand_qmul@125:     //delete[] filebuffer;
ivand_qmul@125: }
ivand_qmul@125: 
ivand_qmul@125: 
ivand_qmul@125: VideoFileReader::~VideoFileReader()
ivand_qmul@125: {
ivand_qmul@125: 	film->videoThreadActive = 0;
ivand_qmul@125: 	if(film->videoThread) SDL_WaitThread(film->videoThread, 0);
ivand_qmul@125: }
ivand_qmul@125: bool 
ivand_qmul@125: VideoFileReader::decodeAudio(SDL_ffmpegFile* file)
ivand_qmul@125: {
ivand_qmul@125: 	
ivand_qmul@125: 	
ivand_qmul@125: 	int64_t duration=((AVFormatContext *)file->_ffmpeg)->duration;
ivand_qmul@125:     double elapsed = 0;
ivand_qmul@125: 	m_cancelled=false;
ivand_qmul@125: 	int audio_ends=0;
ivand_qmul@125: 	while((elapsed < duration)&&!m_cancelled ) {
ivand_qmul@125:           
ivand_qmul@125:         elapsed = double(m_frameCount)*1000000 /(m_channelCount*m_sampleRate);
ivand_qmul@125:         double percent = (elapsed * 100) / duration;
ivand_qmul@125:         int progress = int(percent);
ivand_qmul@125:         if (progress < 1) progress = 1;
ivand_qmul@125:         if (progress > 99) progress = 99;
ivand_qmul@125:         if (progress > m_progress->value()) {
ivand_qmul@125:             m_progress->setValue(progress);
ivand_qmul@125:             m_progress->show();
ivand_qmul@125:             m_progress->raise();
ivand_qmul@125:             qApp->processEvents();
ivand_qmul@125:             if (m_progress->wasCanceled()) {
ivand_qmul@125:                 m_cancelled = true;
ivand_qmul@125:             }
ivand_qmul@125:         }
ivand_qmul@125: 		
ivand_qmul@125: 		// we tell SDL_ffmpegGetAudio how many bytes we need, the function then
ivand_qmul@125: 		// fills this pointer with the amount of bytes it could actually give
ivand_qmul@125: 		int gotLength = 100000;
ivand_qmul@125: 		if (!isDecodeCacheInitialised()) {
ivand_qmul@125: 				initialiseDecodeCache();
ivand_qmul@125: 		}
ivand_qmul@125: 		// we try to get some data from our file
ivand_qmul@125: 		// important! this call is paired with SDL_ffmpegReleaseAudio
ivand_qmul@125: 		int16_t* audio =(int16_t *) SDL_ffmpegGetAudio(file, &gotLength);
ivand_qmul@125: 		for (int i=0; i<gotLength/2;i++)
ivand_qmul@125: 		{
ivand_qmul@125: 			float sample=float(*audio++)/float(2*32768);
ivand_qmul@125: 			addSampleToDecodeCache(sample);
ivand_qmul@125: 		}
ivand_qmul@125: 		// copy the bytes we got to audiocard
ivand_qmul@125: 		// if(audio) memcpy(stream, audio, gotLength);
ivand_qmul@125: 
ivand_qmul@125: 		// we release our audio data, so the decode thread can fill it again
ivand_qmul@125: 		// we also inform this function of the amount of bytes we used, so it can
ivand_qmul@125: 		// move the buffer accordingly
ivand_qmul@125: 		// important! this call is paired with SDL_ffmpegGetAudio
ivand_qmul@125: 		SDL_ffmpegReleaseAudio(file, gotLength);
ivand_qmul@125: 			//decode_audio(film, 1000000);
ivand_qmul@125:         m_frameCount+=gotLength/2;
ivand_qmul@125: 		if ((progress > 97)&&(gotLength<=0)) audio_ends++;
ivand_qmul@125: 		if (audio_ends>=2000) m_cancelled = true;
ivand_qmul@125:     }
ivand_qmul@125: 	m_frameCount/=m_channelCount;
ivand_qmul@125: 	if (isDecodeCacheInitialised()) finishDecodeCache();
ivand_qmul@125: 	return true;
ivand_qmul@125: }
ivand_qmul@125: bool 
ivand_qmul@125: VideoFileReader::videoInit(SDL_ffmpegFile* file)
ivand_qmul@125: {
ivand_qmul@125: 	int w,h;
ivand_qmul@125:     // we get the size from our active video stream, if no active video stream
ivand_qmul@125:     // exists, width and height are set to default values (320x240)
ivand_qmul@125:     SDL_ffmpegGetVideoSize(file, &w, &h);
benoitrigolleau@130: 	SDL_Init(SDL_INIT_VIDEO);
ivand_qmul@125:     // Open the Video device
ivand_qmul@125:     screen = SDL_SetVideoMode(w, h, 0, SDL_DOUBLEBUF|SDL_HWSURFACE);
benoitrigolleau@130: 	//SDL_WM_SetCaption("EASAIER Video Player", "EASAIER Video Player");
ivand_qmul@125:     if(!screen) {
ivand_qmul@125:         printf("Couldn't open video: %s\n", SDL_GetError());
ivand_qmul@125:         return false;
ivand_qmul@125:     }
ivand_qmul@125: 	return true;
ivand_qmul@125: }
ivand_qmul@125: 
ivand_qmul@125: int VideoFileReader::videoPlayCall(void *t)
ivand_qmul@125: {
ivand_qmul@125:         return ((VideoFileReader *)t)->videoPlay();
ivand_qmul@125: } 
ivand_qmul@125: 
ivand_qmul@125: int
ivand_qmul@125: VideoFileReader::videoPlay()
ivand_qmul@125: {
ivand_qmul@125: 
ivand_qmul@125: 
ivand_qmul@125: 	film->videoThreadActive = 1;
ivand_qmul@125: 	MainWindow * MWins=MainWindow::instance();
ivand_qmul@125: 	
ivand_qmul@125: 	if (!videoInit(film)) {
ivand_qmul@125: 		m_error = QString("Failed to failed to initalized video file for reading.");
ivand_qmul@125: 		return 0;
ivand_qmul@125: 	}
ivand_qmul@125: 	//const SDL_VideoInfo * vid=SDL_GetVideoInfo();
ivand_qmul@125: 	film->audioTime =0;
ivand_qmul@125: 	int w,h;
ivand_qmul@125: 	SDL_ffmpegGetVideoSize(film, &w, &h);
ivand_qmul@125: 	//SDL_ffmpegStartDecoding(film);
ivand_qmul@125:     SDL_Delay(1000);
ivand_qmul@129: 	QueryPerformanceFrequency((LARGE_INTEGER *)(&countFreq));
ivand_qmul@129: 	countFreq/=1000;
ivand_qmul@129: 	film->countFreq=countFreq;
ivand_qmul@129: 	QueryPerformanceCounter((LARGE_INTEGER *)(&film->timer));
ivand_qmul@129: 	film->timer=film->timer/(film->countFreq);
ivand_qmul@129: 	film->timebase=1;
ivand_qmul@129: 	film->vs[film->videoStream]->lastTimeStamp=0;
ivand_qmul@125: 	while( film->videoThreadActive ) {
ivand_qmul@125: 
ivand_qmul@125: 		
ivand_qmul@125: 		if (MWins->isAudioPlaying())
ivand_qmul@125: 		{	
ivand_qmul@125: 			if ((SDL_ffmpegGetState(film))||((long)(abs((long)(film->audioTime - (int64_t)(MWins->Get_CurAudioTime()))))>=1000)) 
ivand_qmul@125: 			{
ivand_qmul@125: 				//SDL_Delay(1000);
ivand_qmul@125: 				film->audioTime = MWins->Get_CurAudioTime();
ivand_qmul@125: 				SDL_ffmpegSeek(film, film->audioTime);
ivand_qmul@125: 				SDL_ffmpegPause(film, 0);
ivand_qmul@125: 			}
ivand_qmul@125: 			else
ivand_qmul@125: 				film->audioTime = MWins->Get_CurAudioTime();
ivand_qmul@125: 		}
ivand_qmul@125: 		else
ivand_qmul@125: 		{
ivand_qmul@125: 			SDL_ffmpegPause(film, 1);	
ivand_qmul@125: 			
ivand_qmul@125: 		}
ivand_qmul@125: 
ivand_qmul@125:         // we retrieve the current image from the file
ivand_qmul@125:         // we get 0 if no file could be retrieved
ivand_qmul@125:         // important! please note this call should be paired with SDL_ffmpegReleaseVideo
ivand_qmul@125:         SDL_Surface* bmp = SDL_ffmpegGetVideo((SDL_ffmpegFile *)film);
ivand_qmul@125: 		
ivand_qmul@125:         if(bmp) {
ivand_qmul@125: 
ivand_qmul@125: 			
ivand_qmul@125:             // we got a frame, so we better show this one
ivand_qmul@125:             SDL_BlitSurface(bmp, 0, screen, 0);
ivand_qmul@125: 
ivand_qmul@125:             // we flip the double buffered screen so we might actually see something
ivand_qmul@125:             SDL_Flip(screen);
ivand_qmul@125: 
ivand_qmul@125:             // After releasing bmp, you can no longer use it.
ivand_qmul@125:             // you should call this function every time you get a frame!
ivand_qmul@125:             SDL_ffmpegReleaseVideo((SDL_ffmpegFile *)film, bmp);
ivand_qmul@125:         }
ivand_qmul@125: 
ivand_qmul@125:         // we wish not to kill our poor cpu, so we give it some timeoff
ivand_qmul@129:        // SDL_Delay(1);
ivand_qmul@125:     }
ivand_qmul@125: 	// after all is said and done, we should call this
ivand_qmul@125:     SDL_ffmpegFree(film);
ivand_qmul@125: 	return 0;
ivand_qmul@125: }
ivand_qmul@125: 
ivand_qmul@125: void
ivand_qmul@125: VideoFileReader::getSupportedExtensions(std::set<QString> &extensions)
ivand_qmul@125: {
ivand_qmul@125:     extensions.insert("mpg");
ivand_qmul@125: 	extensions.insert("avi");
ivand_qmul@125: 	extensions.insert("divx");
ivand_qmul@125: 	extensions.insert("mov");
ivand_qmul@125: }
ivand_qmul@125: 
ivand_qmul@125: #endif