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//
// Copyright (C) 2007-2009 Andoni Morales Alastruey
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
//
using System;
using LongoMatch.Video;
using LongoMatch.Video.Common;
using LongoMatch.Video.Player;
using Mono.Unix;
using Gdk;
namespace LongoMatch.Video.Utils
{
[Serializable]
public class PreviewMediaFile:MediaFile
{
private byte[] thumbnailBuf;
const int THUMBNAIL_MAX_HEIGHT=72;
const int THUMBNAIL_MAX_WIDTH=96;
public PreviewMediaFile(){}
public PreviewMediaFile(string filePath,
long length,
ushort fps,
bool hasAudio,
bool hasVideo,
string VideoEncoderType,
string AudioEncoderType,
uint videoWidth,
uint videoHeight,
Pixbuf preview):base (filePath,length,fps,hasAudio,hasVideo,VideoEncoderType,AudioEncoderType,videoWidth,videoHeight)
{
this.Preview=preview;
}
public Pixbuf Preview{
get{
if (thumbnailBuf != null)
return new Pixbuf(thumbnailBuf);
else return null;
}
set{
if (value != null){
thumbnailBuf = value.SaveToBuffer("png");
value.Dispose();
}
else thumbnailBuf = null;
}
}
public new static PreviewMediaFile GetMediaFile(string filePath){
int duration=0;
bool hasVideo;
bool hasAudio;
string AudioEncoderType = "";
string VideoEncoderType = "";
int fps=0;
int height=0;
int width=0;
Pixbuf preview=null;
MultimediaFactory factory;
IMetadataReader reader;
IFramesCapturer thumbnailer;
try{
factory = new MultimediaFactory();
reader = factory.getMetadataReader();
reader.Open(filePath);
hasVideo = (bool) reader.GetMetadata(MetadataType.HasVideo);
hasAudio = (bool) reader.GetMetadata(MetadataType.HasAudio);
if (hasAudio){
AudioEncoderType = (string) reader.GetMetadata(MetadataType.AudioEncoderType);
}
if (hasVideo){
VideoEncoderType = (string) reader.GetMetadata(MetadataType.VideoEncoderType);
fps = (int) reader.GetMetadata(MetadataType.Fps);
thumbnailer = factory.getFramesCapturer();
thumbnailer.Open(filePath);
thumbnailer.SeekTime(1000,false);
preview = thumbnailer.GetCurrentFrame(THUMBNAIL_MAX_WIDTH,THUMBNAIL_MAX_HEIGHT);
duration =(int) ((thumbnailer as GstPlayer).StreamLength/1000); /* On Windows some formats report a 0 duration, try a last time with the reader */
if (duration == 0)
duration = (int)reader.GetMetadata(MetadataType.Duration);
thumbnailer.Dispose();
}
height = (int) reader.GetMetadata(MetadataType.DimensionX);
width = (int) reader.GetMetadata (MetadataType.DimensionY);
reader.Close();
reader.Dispose();
return new PreviewMediaFile(filePath,duration*1000,
(ushort)fps,hasAudio,
hasVideo,VideoEncoderType,
AudioEncoderType,(uint)height,
(uint)width,preview);
}
catch (GLib.GException ex){
throw new Exception (Catalog.GetString("Invalid video file:")+"\n"+ex.Message);
}
}
}
}
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