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ab223520ed
Adder was using always incrementing timestamps. Seeking was done by setting the position in the newsegment event. This was failing when doing segmented seeks with rate<0.0, as offset (and thus timestamp) would go below 0. Now we take both cur and end from the seek event. We construct newsegment events depending including cur and end from the seek event. We set position to the start of the segment. Timestamp is set to start or end of segment depending on rate. Offset is recalculated.
110 lines
3.2 KiB
C
110 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/gstcollectpads.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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GstCollectPads *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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/* 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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gboolean segment_pending;
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guint64 segment_start, segment_end;
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gdouble segment_rate;
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/* src event handling */
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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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