1 /* GStreamer 2 * Copyright (C) 1999 Erik Walthinsen <omega@cse.ogi.edu> 3 * Copyright (C) 2005 Stefan Kost <ensonic@users.sf.net> (audiotestsrc) 4 * Copyright (C) 2013 Juan Manuel Borges Caño <juanmabcmail@gmail.com> 5 * 6 * gstladspasource.h: Header for LADSPA source 7 * 8 * This library is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU Library General Public 10 * License as published by the Free Software Foundation; either 11 * version 2 of the License, or (at your option) any later version. 12 * 13 * This library is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * Library General Public License for more details. 17 * 18 * You should have received a copy of the GNU Library General Public 19 * License along with this library; if not, write to the 20 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, 21 * Boston, MA 02110-1301, USA. 22 */ 23 24 #ifndef __GST_LADSPA_SOURCE_H__ 25 #define __GST_LADSPA_SOURCE_H__ 26 27 #include <gst/gst.h> 28 #include <gst/base/gstbasesrc.h> 29 #include "gstladspautils.h" 30 31 G_BEGIN_DECLS 32 33 #define GST_TYPE_LADSPA_SOURCE (gst_ladspa_source_get_type()) 34 #define GST_LADSPA_SOURCE(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_LADSPA_SOURCE,GstLADSPASource)) 35 #define GST_LADSPA_SOURCE_CAST(obj) ((GstLADSPASource *) (obj)) 36 #define GST_LADSPA_SOURCE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_LADSPA_SOURCE,GstLADSPASourceClass)) 37 #define GST_LADSPA_SOURCE_CLASS_CAST(klass) ((GstLADSPASourceClass *) (klass)) 38 #define GST_LADSPA_SOURCE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj),GST_TYPE_LADSPA_SOURCE,GstLADSPASourceClass)) 39 #define GST_IS_LADSPA_SOURCE(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_LADSPA_SOURCE)) 40 #define GST_IS_LADSPA_SOURCE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_LADSPA_SOURCE)) 41 42 typedef struct _GstLADSPASource GstLADSPASource; 43 44 typedef struct _GstLADSPASourceClass GstLADSPASourceClass; 45 46 struct _GstLADSPASource 47 { 48 GstBaseSrc parent; 49 50 GstLADSPA ladspa; 51 52 /* audio parameters */ 53 GstAudioInfo info; 54 gint samples_per_buffer; 55 56 /*< private > */ 57 gboolean tags_pushed; /* send tags just once ? */ 58 GstClockTimeDiff timestamp_offset; /* base offset */ 59 GstClockTime next_time; /* next timestamp */ 60 gint64 next_sample; /* next sample to send */ 61 gint64 next_byte; /* next byte to send */ 62 gint64 sample_stop; 63 gboolean check_seek_stop; 64 gboolean eos_reached; 65 gint generate_samples_per_buffer; /* used to generate a partial buffer */ 66 gboolean can_activate_pull; 67 gboolean reverse; /* play backwards */ 68 }; 69 70 struct _GstLADSPASourceClass 71 { 72 GstBaseSrcClass parent_class; 73 74 GstLADSPAClass ladspa; 75 }; 76 77 GType 78 gst_ladspa_source_get_type (void); 79 80 void 81 ladspa_register_source_element (GstPlugin * plugin, GstStructure *ladspa_meta); 82 83 void 84 gst_my_base_source_class_add_pad_template (GstBaseSrcClass * base_class, 85 GstCaps * srccaps); 86 87 G_END_DECLS 88 89 #endif /* __GST_LADSPA_SOURCE_H__ */ 90