1 /* GStreamer 2 * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu> 3 * 2000 Wim Taymans <wtay@chello.be> 4 * 5 * gstadder.h: Header for GstAdder element 6 * 7 * This library is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU Library General Public 9 * License as published by the Free Software Foundation; either 10 * version 2 of the License, or (at your option) any later version. 11 * 12 * This library is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Library General Public License for more details. 16 * 17 * You should have received a copy of the GNU Library General Public 18 * License along with this library; if not, write to the 19 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, 20 * Boston, MA 02110-1301, USA. 21 */ 22 23 #ifndef __GST_ADDER_H__ 24 #define __GST_ADDER_H__ 25 26 #include <gst/gst.h> 27 #include <gst/base/gstcollectpads.h> 28 #include <gst/audio/audio.h> 29 30 G_BEGIN_DECLS 31 32 #define GST_TYPE_ADDER (gst_adder_get_type()) 33 #define GST_ADDER(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_ADDER,GstAdder)) 34 #define GST_IS_ADDER(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_ADDER)) 35 #define GST_ADDER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass) ,GST_TYPE_ADDER,GstAdderClass)) 36 #define GST_IS_ADDER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass) ,GST_TYPE_ADDER)) 37 38 typedef struct _GstAdder GstAdder; 39 typedef struct _GstAdderClass GstAdderClass; 40 41 typedef struct _GstAdderPad GstAdderPad; 42 typedef struct _GstAdderPadClass GstAdderPadClass; 43 44 /** 45 * GstAdder: 46 * 47 * The adder object structure. 48 */ 49 struct _GstAdder { 50 GstElement element; 51 52 GstPad *srcpad; 53 GstCollectPads *collect; 54 /* pad counter, used for creating unique request pads */ 55 gint padcount; 56 57 /* the next are valid for both int and float */ 58 GstAudioInfo info; 59 60 /* counters to keep track of timestamps */ 61 gint64 offset; 62 63 /* sink event handling */ 64 GstSegment segment; 65 volatile gboolean new_segment_pending; 66 volatile gboolean flush_stop_pending; 67 68 /* current caps */ 69 GstCaps *current_caps; 70 71 /* target caps (set via property) */ 72 GstCaps *filter_caps; 73 74 /* Pending inline events */ 75 GList *pending_events; 76 77 gboolean send_stream_start; 78 gboolean send_caps; 79 }; 80 81 struct _GstAdderClass { 82 GstElementClass parent_class; 83 }; 84 85 GType gst_adder_get_type (void); 86 87 #define GST_TYPE_ADDER_PAD (gst_adder_pad_get_type()) 88 #define GST_ADDER_PAD(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_ADDER_PAD,GstAdderPad)) 89 #define GST_IS_ADDER_PAD(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_ADDER_PAD)) 90 #define GST_ADDER_PAD_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass) ,GST_TYPE_ADDER_PAD,GstAdderPadClass)) 91 #define GST_IS_ADDER_PAD_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass) ,GST_TYPE_ADDER_PAD)) 92 #define GST_ADDER_PAD_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj) ,GST_TYPE_ADDER_PAD,GstAdderPadClass)) 93 94 struct _GstAdderPad { 95 GstPad parent; 96 97 gdouble volume; 98 gint volume_i32; 99 gint volume_i16; 100 gint volume_i8; 101 gboolean mute; 102 }; 103 104 struct _GstAdderPadClass { 105 GstPadClass parent_class; 106 }; 107 108 GType gst_adder_pad_get_type (void); 109 110 G_END_DECLS 111 112 113 #endif /* __GST_ADDER_H__ */ 114