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/* GStreamer mpeg2enc (mjpegtools) wrapper
* (c) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
*
* gstmpeg2encoder.cc: gstreamer/mpeg2enc encoder class
*
* This library 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; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; 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 <mpegconsts.h>
#include <quantize.hh>
#include <ratectl.hh>
#include <seqencoder.hh>
#include <mpeg2coder.hh>
#include "gstmpeg2encoder.hh"
/*
* Class init stuff.
*/
GstMpeg2Encoder::GstMpeg2Encoder (GstMpeg2EncOptions *options,
GstPad *sinkpad,
GstCaps *caps,
GstPad *srcpad) :
MPEG2Encoder (*options)
{
MPEG2EncInVidParams strm;
/* I/O */
reader = new GstMpeg2EncPictureReader (sinkpad, caps, &parms);
reader->StreamPictureParams (strm);
if (options->SetFormatPresets (strm)) {
g_warning ("Eek! Format presets failed. This is really bad!");
}
writer = new GstMpeg2EncStreamWriter (srcpad, &parms);
/* encoding internals */
quantizer = new Quantizer (parms);
coder = new MPEG2Coder (parms, *writer);
bitrate_controller = new OnTheFlyRateCtl (parms);
/* sequencer */
seqencoder = new SeqEncoder (parms, *reader, *quantizer,
*writer, *coder, *bitrate_controller);
parms.Init (*options);
reader->Init ();
quantizer->Init ();
}
/*
* One image.
*/
void
GstMpeg2Encoder::encodePicture ()
{
/* hm, this is all... eek! */
seqencoder->Encode ();
}
/*
* Get current output format.
*/
GstCaps *
GstMpeg2Encoder::getFormat ()
{
gdouble fps = Y4M_RATIO_DBL (mpeg_framerate (options.frame_rate));
return GST_CAPS_NEW ("mpeg2enc_src",
"video/mpeg",
"systemstream", GST_PROPS_BOOLEAN (FALSE),
"mpegversion", GST_PROPS_INT (options.mpeg),
"width", GST_PROPS_INT (options.in_img_width),
"height", GST_PROPS_INT (options.in_img_height),
"framerate", GST_PROPS_FLOAT (fps));
}
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