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/*
* params.hpp: User specifiable parameters for various types of stream
*
* The Check<stream>Params pseudo-constructors are constructed so that
* they will only construct legal combinations of parameters.
*
* Copyright (C) 2002 Andrew Stevens <andrew.stevens@philips.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of version 2 of the GNU General Public License
* as published by the Free Software Foundation.
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "stream_params.hpp"
#include "format_codes.h"
LpcmParams *LpcmParams::Default(unsigned int mux_format)
{
return new LpcmParams(48000,2,16);
}
LpcmParams::LpcmParams( unsigned int samples,
unsigned int chans,
unsigned int bits ) :
samples_per_sec( samples ),
channels(chans),
bits_per_sample(bits)
{
}
LpcmParams *LpcmParams::Checked(unsigned int samples,
unsigned int chans,
unsigned int bits )
{
if( samples != 48000 && samples != 96000 )
return 0;
if( chans < 1 || chans > 7 )
return 0;
if( bits != 16 && bits != 20 && bits != 24 )
return 0;
return new LpcmParams(samples,chans,bits);
}
bool VideoParams::Force( unsigned int mux_format )
{
unsigned int bufsiz;
//
// Handle formats that force the buffer size parameter to a
// standard-conforming value
//
switch( mux_format )
{
case MPEG_FORMAT_SVCD :
bufsiz = 230;
break;
case MPEG_FORMAT_VCD :
bufsiz = 46;
break;
case MPEG_FORMAT_DVD :
case MPEG_FORMAT_DVD_NAV :
bufsiz = 232;
break;
default :
return false;
}
decode_buffer_size = bufsiz;
return true;
}
VideoParams *VideoParams::Checked( unsigned int bufsiz)
{
if( bufsiz < 20 && bufsiz >= 4096 ) // In KB here...
return 0;
return new VideoParams(bufsiz);
}
VideoParams::VideoParams( unsigned int bufsiz ) :
decode_buffer_size(bufsiz)
{
}
VideoParams *VideoParams::Default(unsigned int mux_format)
{
unsigned int bufsiz;
switch( mux_format )
{
case MPEG_FORMAT_MPEG2 :
case MPEG_FORMAT_SVCD :
case MPEG_FORMAT_SVCD_NSR :
case MPEG_FORMAT_SVCD_STILL :
bufsiz = 230;
break;
case MPEG_FORMAT_DVD :
case MPEG_FORMAT_DVD_NAV :
bufsiz = 232;
break;
default :
bufsiz = 46;
}
return new VideoParams(bufsiz);
}
/*
* Local variables:
* c-file-style: "stroustrup"
* tab-width: 4
* indent-tabs-mode: nil
* End:
*/
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