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148 lines
3.8 KiB
C++
148 lines
3.8 KiB
C++
/* GStreamer mpeg2enc (mjpegtools) wrapper
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* (c) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
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* (c) 2006 Mark Nauwelaerts <manauw@skynet.be>
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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., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, 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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#if GST_MJPEGTOOLS_API >= 20000
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#include <ontheflyratectlpass1.hh>
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#include <ontheflyratectlpass2.hh>
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#elif GST_MJPEGTOOLS_API >= 10900
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#include <ontheflyratectl.hh>
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#include <pass1ratectl.hh>
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#include <pass2ratectl.hh>
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#endif
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#include <seqencoder.hh>
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#include <mpeg2coder.hh>
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#include "gstmpeg2enc.hh"
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#include "gstmpeg2encoder.hh"
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class GstOnTheFlyPass2 : public OnTheFlyPass2 {
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public:
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GstOnTheFlyPass2 (EncoderParams &encoder, gboolean disable_encode_retries): OnTheFlyPass2(encoder), disable_encode_retries(disable_encode_retries) {}
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bool ReencodeRequired() const { return disable_encode_retries ? false : OnTheFlyPass2::ReencodeRequired(); }
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private:
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gboolean disable_encode_retries;
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};
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/*
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* Class init stuff.
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*/
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GstMpeg2Encoder::GstMpeg2Encoder (GstMpeg2EncOptions * options, GstElement * in_element, GstCaps * in_caps):
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MPEG2Encoder (*options)
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{
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element = in_element;
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gst_object_ref (element);
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caps = in_caps;
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gst_caps_ref (in_caps);
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init_done = FALSE;
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disable_encode_retries = options->disable_encode_retries;
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}
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GstMpeg2Encoder::~GstMpeg2Encoder ()
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{
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gst_caps_unref (caps);
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gst_object_unref (element);
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}
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gboolean GstMpeg2Encoder::setup ()
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{
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MPEG2EncInVidParams
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strm;
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GstVideoEncoder *
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video_encoder;
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video_encoder = GST_VIDEO_ENCODER (element);
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/* I/O */
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reader = new GstMpeg2EncPictureReader (element, caps, &parms);
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reader->StreamPictureParams (strm);
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if (options.SetFormatPresets (strm)) {
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delete reader;
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reader = NULL;
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writer = NULL;
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quantizer = NULL;
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pass1ratectl = NULL;
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pass2ratectl = NULL;
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/* sequencer */
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seqencoder = NULL;
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return FALSE;
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}
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writer = new GstMpeg2EncStreamWriter (video_encoder, &parms);
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/* encoding internals */
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quantizer = new Quantizer (parms);
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pass1ratectl = new OnTheFlyPass1 (parms);
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pass2ratectl = new GstOnTheFlyPass2 (parms, disable_encode_retries);
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/* sequencer */
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seqencoder = new SeqEncoder (parms, *reader, *quantizer,
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*writer, *pass1ratectl, *pass2ratectl);
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return TRUE;
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}
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void
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GstMpeg2Encoder::init ()
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{
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if (!init_done) {
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parms.Init (options);
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reader->Init ();
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quantizer->Init ();
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seqencoder->Init ();
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init_done = TRUE;
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}
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}
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/*
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* Process all input provided by the reader until it signals eos.
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*/
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void
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GstMpeg2Encoder::encode ()
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{
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/* hm, this is all... eek! */
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seqencoder->EncodeStream ();
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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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y4m_ratio_t fps = mpeg_framerate (options.frame_rate);
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return gst_caps_new_simple ("video/mpeg",
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"systemstream", G_TYPE_BOOLEAN, FALSE,
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"mpegversion", G_TYPE_INT, options.mpeg,
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"width", G_TYPE_INT, options.in_img_width,
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"height", G_TYPE_INT, options.in_img_height,
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"framerate", GST_TYPE_FRACTION, fps.n, fps.d, NULL);
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}
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