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Diffstat (limited to 'gst/realmedia/rdtjitterbuffer.h')
| -rw-r--r-- | gst/realmedia/rdtjitterbuffer.h | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/gst/realmedia/rdtjitterbuffer.h b/gst/realmedia/rdtjitterbuffer.h new file mode 100644 index 0000000..26a9895 --- /dev/null +++ b/gst/realmedia/rdtjitterbuffer.h @@ -0,0 +1,91 @@ +/* GStreamer + * Copyright (C) <2007> Wim Taymans <wim.taymans@gmail.com> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + +#ifndef __RDT_JITTER_BUFFER_H__ +#define __RDT_JITTER_BUFFER_H__ + +#include <gst/gst.h> + +typedef struct _RDTJitterBuffer RDTJitterBuffer; +typedef struct _RDTJitterBufferClass RDTJitterBufferClass; + +#define RDT_TYPE_JITTER_BUFFER (rdt_jitter_buffer_get_type()) +#define RDT_JITTER_BUFFER(src) (G_TYPE_CHECK_INSTANCE_CAST((src),RDT_TYPE_JITTER_BUFFER,RDTJitterBuffer)) +#define RDT_JITTER_BUFFER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),RDT_TYPE_JITTER_BUFFER,RDTJitterBufferClass)) +#define RDT_IS_JITTER_BUFFER(src) (G_TYPE_CHECK_INSTANCE_TYPE((src),RDT_TYPE_JITTER_BUFFER)) +#define RDT_IS_JITTER_BUFFER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),RDT_TYPE_JITTER_BUFFER)) +#define RDT_JITTER_BUFFER_CAST(src) ((RDTJitterBuffer *)(src)) + +/** + * RTPTailChanged: + * @jbuf: an #RDTJitterBuffer + * @user_data: user data specified when registering + * + * This callback will be called when the tail buffer of @jbuf changed. + */ +typedef void (*RTPTailChanged) (RDTJitterBuffer *jbuf, gpointer user_data); + +#define RDT_JITTER_BUFFER_MAX_WINDOW 512 +/** + * RDTJitterBuffer: + * + * A JitterBuffer in the #RTPSession + */ +struct _RDTJitterBuffer { + GObject object; + + GQueue *packets; + + /* for calculating skew */ + GstClockTime base_time; + GstClockTime base_rtptime; + guint64 ext_rtptime; + gint64 window[RDT_JITTER_BUFFER_MAX_WINDOW]; + guint window_pos; + guint window_size; + gboolean window_filling; + gint64 window_min; + gint64 skew; + gint64 prev_send_diff; +}; + +struct _RDTJitterBufferClass { + GObjectClass parent_class; +}; + +GType rdt_jitter_buffer_get_type (void); + +/* managing lifetime */ +RDTJitterBuffer* rdt_jitter_buffer_new (void); + +void rdt_jitter_buffer_reset_skew (RDTJitterBuffer *jbuf); + +gboolean rdt_jitter_buffer_insert (RDTJitterBuffer *jbuf, GstBuffer *buf, + GstClockTime time, + guint32 clock_rate, + gboolean *tail); +GstBuffer * rdt_jitter_buffer_peek (RDTJitterBuffer *jbuf); +GstBuffer * rdt_jitter_buffer_pop (RDTJitterBuffer *jbuf); + +void rdt_jitter_buffer_flush (RDTJitterBuffer *jbuf); + +guint rdt_jitter_buffer_num_packets (RDTJitterBuffer *jbuf); +guint32 rdt_jitter_buffer_get_ts_diff (RDTJitterBuffer *jbuf); + +#endif /* __RDT_JITTER_BUFFER_H__ */ |