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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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5492631d84
Rework things a bit so that we can run over the midi events and fire callbacks for each of them. We can then use that for calculating the duration and also for doing playback. Only parse as many tracks as specified in the header. Fix default tempo; Send MIDI tick events every 10ms
87 lines
2.2 KiB
C
87 lines
2.2 KiB
C
/*
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* gstmidiparse - midiparse plugin for gstreamer
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*
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* Copyright 2007 Wouter Paesen <wouter@blue-gate.be>
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* Copyright 2013 Wim Taymans <wim.taymans@gmail.be>
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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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#ifndef __GST_MIDIPARSE_H__
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#define __GST_MIDIPARSE_H__
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#include <gst/gst.h>
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#include <gst/base/gstadapter.h>
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#include <midiparse.h>
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G_BEGIN_DECLS
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#define GST_TYPE_MIDI_PARSE \
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(gst_midi_parse_get_type())
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#define GST_MIDI_PARSE(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_MIDI_PARSE,GstMidiParse))
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#define GST_MIDI_PARSE_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_MIDI_PARSE,GstMidiParseClass))
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#define GST_IS_MIDI_PARSE(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_MIDI_PARSE))
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#define GST_IS_MIDI_PARSE_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_MIDI_PARSE))
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typedef struct _GstMidiParse GstMidiParse;
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typedef struct _GstMidiParseClass GstMidiParseClass;
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typedef enum {
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GST_MIDI_PARSE_STATE_LOAD,
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GST_MIDI_PARSE_STATE_PARSE,
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GST_MIDI_PARSE_STATE_PLAY
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} GstMidiParseState;
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struct _GstMidiParse
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{
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GstElement element;
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GstPad *sinkpad, *srcpad;
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/* input stream properties */
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GstMidiParseState state;
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guint tempo;
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guint16 ntracks;
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guint16 division;
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GList *tracks;
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guint track_count;
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guint64 offset;
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GstAdapter *adapter;
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/* output data */
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gboolean discont;
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GstSegment segment;
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guint64 pulse;
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};
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struct _GstMidiParseClass
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{
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GstElementClass parent_class;
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};
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GType gst_midi_parse_get_type (void);
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G_END_DECLS
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#endif /* __GST_MIDI_PARSE_H__ */
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