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96 lines
2.5 KiB
C++
96 lines
2.5 KiB
C++
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/* GStreamer mpeg2enc (mjpegtools) wrapper
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* (c) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
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*
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* gstmpeg2encoder.cc: gstreamer/mpeg2enc encoder class
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <mpegconsts.h>
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#include <quantize.hh>
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#include <ratectl.hh>
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#include <seqencoder.hh>
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#include <mpeg2coder.hh>
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#include "gstmpeg2encoder.hh"
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/*
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* Class init stuff.
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*/
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GstMpeg2Encoder::GstMpeg2Encoder (GstMpeg2EncOptions *options,
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GstPad *sinkpad,
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GstCaps *caps,
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GstPad *srcpad) :
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MPEG2Encoder (*options)
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{
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MPEG2EncInVidParams strm;
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/* I/O */
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reader = new GstMpeg2EncPictureReader (sinkpad, caps, &parms);
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reader->StreamPictureParams (strm);
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if (options->SetFormatPresets (strm)) {
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g_warning ("Eek! Format presets failed. This is really bad!");
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}
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writer = new GstMpeg2EncStreamWriter (srcpad, &parms);
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/* encoding internals */
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quantizer = new Quantizer (parms);
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coder = new MPEG2Coder (parms, *writer);
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bitrate_controller = new OnTheFlyRateCtl (parms);
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/* sequencer */
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seqencoder = new SeqEncoder (parms, *reader, *quantizer,
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*writer, *coder, *bitrate_controller);
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parms.Init (*options);
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reader->Init ();
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quantizer->Init ();
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}
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/*
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* One image.
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*/
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void
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GstMpeg2Encoder::encodePicture ()
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{
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/* hm, this is all... eek! */
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seqencoder->Encode ();
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}
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/*
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* Get current output format.
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*/
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GstCaps *
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GstMpeg2Encoder::getFormat ()
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{
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gdouble fps = Y4M_RATIO_DBL (mpeg_framerate (options.frame_rate));
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return GST_CAPS_NEW ("mpeg2enc_src",
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"video/mpeg",
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"systemstream", GST_PROPS_BOOLEAN (FALSE),
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"mpegversion", GST_PROPS_INT (options.mpeg),
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"width", GST_PROPS_INT (options.in_img_width),
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"height", GST_PROPS_INT (options.in_img_height),
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"framerate", GST_PROPS_FLOAT (fps));
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}
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