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 G_DECLARE_FINAL_TYPE (GstAdder, gst_adder, GST, ADDER, GstElement) 34 35 /** 36 * GstAdder: 37 * 38 * The adder object structure. 39 */ 40 struct _GstAdder { 41 GstElement element; 42 43 GstPad *srcpad; 44 GstCollectPads *collect; 45 /* pad counter, used for creating unique request pads */ 46 gint padcount; 47 48 /* the next are valid for both int and float */ 49 GstAudioInfo info; 50 51 /* counters to keep track of timestamps */ 52 gint64 offset; 53 54 /* sink event handling */ 55 GstSegment segment; 56 gboolean new_segment_pending; 57 gboolean flush_stop_pending; 58 59 /* current caps */ 60 GstCaps *current_caps; 61 62 /* target caps (set via property) */ 63 GstCaps *filter_caps; 64 65 /* Pending inline events */ 66 GList *pending_events; 67 68 gboolean send_stream_start; 69 gboolean send_caps; 70 }; 71 72 GST_ELEMENT_REGISTER_DECLARE (adder); 73 74 #define GST_TYPE_ADDER_PAD (gst_adder_pad_get_type()) 75 G_DECLARE_FINAL_TYPE (GstAdderPad, gst_adder_pad, GST, ADDER_PAD, GstPad) 76 77 struct _GstAdderPad { 78 GstPad parent; 79 80 gdouble volume; 81 gint volume_i32; 82 gint volume_i16; 83 gint volume_i8; 84 gboolean mute; 85 }; 86 87 G_END_DECLS 88 89 #endif /* __GST_ADDER_H__ */ 90