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111 lines
3.2 KiB
C
111 lines
3.2 KiB
C
/* GStreamer
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* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
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* 2000 Wim Taymans <wtay@chello.be>
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*
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* gstadder.h: Header for GstAdder element
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __GST_ADDER_H__
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#define __GST_ADDER_H__
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#include <gst/gst.h>
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#include <gst/base/gstcollectpads2.h>
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G_BEGIN_DECLS
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#define GST_TYPE_ADDER (gst_adder_get_type())
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#define GST_ADDER(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_ADDER,GstAdder))
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#define GST_IS_ADDER(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_ADDER))
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#define GST_ADDER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass) ,GST_TYPE_ADDER,GstAdderClass))
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#define GST_IS_ADDER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass) ,GST_TYPE_ADDER))
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#define GST_ADDER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj) ,GST_TYPE_ADDER,GstAdderClass))
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typedef struct _GstAdder GstAdder;
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typedef struct _GstAdderClass GstAdderClass;
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typedef struct _GstAdderInputChannel GstAdderInputChannel;
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typedef enum {
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GST_ADDER_FORMAT_UNSET,
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GST_ADDER_FORMAT_INT,
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GST_ADDER_FORMAT_FLOAT
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} GstAdderFormat;
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typedef void (*GstAdderFunction) (gpointer out, gpointer in, guint size);
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/**
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* GstAdder:
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*
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* The adder object structure.
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*/
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struct _GstAdder {
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GstElement element;
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GstPad *srcpad;
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GstCollectPads2 *collect;
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/* pad counter, used for creating unique request pads */
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gint padcount;
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/* the next are valid for both int and float */
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GstAdderFormat format;
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gint rate;
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gint channels;
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gint width;
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gint endianness;
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int sample_size;
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/* the next are valid only for format == GST_ADDER_FORMAT_INT */
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gint depth;
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gboolean is_signed;
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/* number of bytes per sample, actually width/8 * channels */
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gint bps;
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/* function to add samples */
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GstAdderFunction func;
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/* counters to keep track of timestamps */
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gint64 timestamp;
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gint64 offset;
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/* sink event handling */
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GstPadEventFunction collect_event;
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GstSegment segment;
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guint64 segment_start, segment_end;
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gdouble segment_rate;
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volatile gboolean new_segment_pending;
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volatile gboolean wait_for_new_segment;
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/* src event handling */
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volatile gboolean flush_stop_pending;
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/* target caps */
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GstCaps *filter_caps;
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/* Pending inline events */
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GList *pending_events;
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};
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struct _GstAdderClass {
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GstElementClass parent_class;
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};
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GType gst_adder_get_type (void);
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G_END_DECLS
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#endif /* __GST_ADDER_H__ */
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