1 /* GStreamer DTMF source 2 * 3 * gstdtmfsrc.h: 4 * 5 * Copyright (C) <2007> Collabora. 6 * Contact: Youness Alaoui <youness.alaoui@collabora.co.uk> 7 * Copyright (C) <2007> Nokia Corporation. 8 * Contact: Zeeshan Ali <zeeshan.ali@nokia.com> 9 * Copyright (C) <2005> Wim Taymans <wim@fluendo.com> 10 * 11 * This library is free software; you can redistribute it and/or 12 * modify it under the terms of the GNU Library General Public 13 * License as published by the Free Software Foundation; either 14 * version 2 of the License, or (at your option) any later version. 15 * 16 * This library is distributed in the hope that it will be useful, 17 * but WITHOUT ANY WARRANTY; without even the implied warranty of 18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 19 * Library General Public License for more details. 20 * 21 * You should have received a copy of the GNU Library General Public 22 * License along with this library; if not, write to the 23 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, 24 * Boston, MA 02110-1301, USA. 25 */ 26 27 #ifndef __GST_DTMF_SRC_H__ 28 #define __GST_DTMF_SRC_H__ 29 30 #include <gst/gst.h> 31 #include <gst/gstbuffer.h> 32 #include <gst/base/gstbasesrc.h> 33 34 G_BEGIN_DECLS 35 #define GST_TYPE_DTMF_SRC (gst_dtmf_src_get_type()) 36 #define GST_DTMF_SRC(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_DTMF_SRC,GstDTMFSrc)) 37 #define GST_DTMF_SRC_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_DTMF_SRC,GstDTMFSrcClass)) 38 #define GST_DTMF_SRC_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_DTMF_SRC, GstDTMFSrcClass)) 39 #define GST_IS_DTMF_SRC(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_DTMF_SRC)) 40 #define GST_IS_DTMF_SRC_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_DTMF_SRC)) 41 #define GST_DTMF_SRC_CAST(obj) ((GstDTMFSrc *)(obj)) 42 typedef struct _GstDTMFSrc GstDTMFSrc; 43 typedef struct _GstDTMFSrcClass GstDTMFSrcClass; 44 45 enum _GstDTMFEventType 46 { 47 DTMF_EVENT_TYPE_START, 48 DTMF_EVENT_TYPE_STOP, 49 DTMF_EVENT_TYPE_PAUSE_TASK 50 }; 51 52 typedef enum _GstDTMFEventType GstDTMFEventType; 53 54 struct _GstDTMFSrcEvent 55 { 56 GstDTMFEventType event_type; 57 double sample; 58 guint16 event_number; 59 guint16 volume; 60 guint32 packet_count; 61 }; 62 63 typedef struct _GstDTMFSrcEvent GstDTMFSrcEvent; 64 65 /** 66 * GstDTMFSrc: 67 * @element: the parent element. 68 * 69 * The opaque #GstDTMFSrc data structure. 70 */ 71 struct _GstDTMFSrc 72 { 73 /*< private >*/ 74 GstBaseSrc parent; 75 GAsyncQueue *event_queue; 76 GstDTMFSrcEvent *last_event; 77 gboolean last_event_was_start; 78 79 guint16 interval; 80 GstClockTime timestamp; 81 82 gboolean paused; 83 GstClockID clockid; 84 85 GstClockTime last_stop; 86 87 gint sample_rate; 88 }; 89 90 91 struct _GstDTMFSrcClass 92 { 93 GstBaseSrcClass parent_class; 94 }; 95 96 GType gst_dtmf_src_get_type (void); 97 98 GST_ELEMENT_REGISTER_DECLARE (dtmfsrc); 99 100 G_END_DECLS 101 #endif /* __GST_DTMF_SRC_H__ */ 102