1 /* GStreamer 2 * Copyright (C) 2016 Iskratel d.o.o. 3 * Author: Okrslar Ales <okrslar@iskratel.si> 4 * Copyright (C) 2016 Sebastian Dröge <sebastian@centricular.com> 5 * 6 * This library is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Library General Public 8 * License as published by the Free Software Foundation; either 9 * version 2 of the License, or (at your option) any later version. 10 * 11 * This library is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Library General Public License for more details. 15 * 16 * You should have received a copy of the GNU Library General Public 17 * License along with this library; if not, write to the 18 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, 19 * Boston, MA 02110-1301, USA. 20 */ 21 22 #ifndef __GST_TONE_GENERATE_SRC_H__ 23 #define __GST_TONE_GENERATE_SRC_H__ 24 25 26 #include <gst/gst.h> 27 #include <gst/base/gstbasesrc.h> 28 29 #include <gst/audio/audio.h> 30 #include <spandsp.h> 31 32 G_BEGIN_DECLS 33 34 #define GST_TYPE_TONE_GENERATE_SRC \ 35 (gst_tone_generate_src_get_type()) 36 #define GST_TONE_GENERATE_SRC(obj) \ 37 (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_TONE_GENERATE_SRC,GstToneGenerateSrc)) 38 #define GST_TONE_GENERATE_SRC_CLASS(klass) \ 39 (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_TONE_GENERATE_SRC,GstToneGenerateSrcClass)) 40 #define GST_IS_TONE_GENERATE_SRC(obj) \ 41 (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_TONE_GENERATE_SRC)) 42 #define GST_IS_TONE_GENERATE_SRC_CLASS(klass) \ 43 (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_TONE_GENERATE_SRC)) 44 45 typedef struct _GstToneGenerateSrc GstToneGenerateSrc; 46 typedef struct _GstToneGenerateSrcClass GstToneGenerateSrcClass; 47 48 /** 49 * GstToneGenerateSrc: 50 * 51 * tonegeneratesrc object structure. 52 */ 53 struct _GstToneGenerateSrc { 54 GstPushSrc parent; 55 56 /* parameters */ 57 gint volume; /* The level of the first frequency, in dBm0 */ 58 gint volume2; /* The level of the second frequency, in dBm0, or the percentage modulation depth for an AM modulated tone. */ 59 gint freq; /* The first frequency, in Hz */ 60 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 */ 61 gint on_time; /* On time for the first presence of tone signal. */ 62 gint off_time; /* Off time between first and second presence of tone signal. */ 63 gint on_time2; /* On time for the second presence of tone signal. */ 64 gint off_time2; /* Off time after the second presence of tone signal. */ 65 gboolean repeat; /* 0/1 if the tone repeates itself or not. */ 66 67 /* audio parameters */ 68 gint samples_per_buffer; 69 70 /*< private >*/ 71 GstClockTime next_time; /* next timestamp */ 72 gint64 next_sample; /* next sample to send */ 73 74 /* SpanDSP */ 75 tone_gen_state_t *tone_state; 76 tone_gen_descriptor_t *tone_desc; 77 gboolean properties_changed; 78 }; 79 80 struct _GstToneGenerateSrcClass { 81 GstPushSrcClass parent_class; 82 }; 83 84 GType gst_tone_generate_src_get_type (void); 85 GST_ELEMENT_REGISTER_DECLARE (tonegeneratesrc); 86 87 G_END_DECLS 88 89 #endif /* __GST_TONE_GENERATE_SRC_H__ */ 90