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89 lines
3.2 KiB
C
89 lines
3.2 KiB
C
/* GStreamer
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* Copyright (C) 2016 Iskratel d.o.o.
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* Author: Okrslar Ales <okrslar@iskratel.si>
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* Copyright (C) 2016 Sebastian Dröge <sebastian@centricular.com>
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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_TONE_GENERATE_SRC_H__
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#define __GST_TONE_GENERATE_SRC_H__
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#include <gst/gst.h>
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#include <gst/base/gstbasesrc.h>
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#include <gst/audio/audio.h>
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#include <spandsp.h>
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G_BEGIN_DECLS
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#define GST_TYPE_TONE_GENERATE_SRC \
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(gst_tone_generate_src_get_type())
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#define GST_TONE_GENERATE_SRC(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_TONE_GENERATE_SRC,GstToneGenerateSrc))
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#define GST_TONE_GENERATE_SRC_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_TONE_GENERATE_SRC,GstToneGenerateSrcClass))
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#define GST_IS_TONE_GENERATE_SRC(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_TONE_GENERATE_SRC))
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#define GST_IS_TONE_GENERATE_SRC_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_TONE_GENERATE_SRC))
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typedef struct _GstToneGenerateSrc GstToneGenerateSrc;
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typedef struct _GstToneGenerateSrcClass GstToneGenerateSrcClass;
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/**
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* GstToneGenerateSrc:
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*
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* tonegeneratesrc object structure.
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*/
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struct _GstToneGenerateSrc {
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GstPushSrc parent;
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/* parameters */
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gint volume; /* The level of the first frequency, in dBm0 */
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gint volume2; /* The level of the second frequency, in dBm0, or the percentage modulation depth for an AM modulated tone. */
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gint freq; /* The first frequency, in Hz */
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gint freq2; /* 0 for no second frequency, a positive number for the second frequency, in Hz, or a negative number for an AM modulation frequency, in Hz */
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gint on_time; /* On time for the first presence of tone signal. */
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gint off_time; /* Off time between first and second presence of tone signal. */
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gint on_time2; /* On time for the second presence of tone signal. */
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gint off_time2; /* Off time after the second presence of tone signal. */
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gboolean repeat; /* 0/1 if the tone repeates itself or not. */
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/* audio parameters */
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gint samples_per_buffer;
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/*< private >*/
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GstClockTime next_time; /* next timestamp */
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gint64 next_sample; /* next sample to send */
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/* SpanDSP */
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tone_gen_state_t *tone_state;
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tone_gen_descriptor_t *tone_desc;
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gboolean properties_changed;
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};
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struct _GstToneGenerateSrcClass {
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GstPushSrcClass parent_class;
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};
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GType gst_tone_generate_src_get_type (void);
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GST_ELEMENT_REGISTER_DECLARE (tonegeneratesrc);
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G_END_DECLS
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#endif /* __GST_TONE_GENERATE_SRC_H__ */
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