1 /* RTP Retransmission receiver element for GStreamer 2 * 3 * gstrtprtxreceive.h: 4 * 5 * Copyright (C) 2013 Collabora Ltd. 6 * @author Julien Isorce <julien.isorce@collabora.co.uk> 7 * 8 * This library is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU Library General Public 10 * License as published by the Free Software Foundation; either 11 * version 2 of the License, or (at your option) any later version. 12 * 13 * This library is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * Library General Public License for more details. 17 * 18 * You should have received a copy of the GNU Library General Public 19 * License along with this library; if not, write to the 20 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, 21 * Boston, MA 02110-1301, USA. 22 */ 23 24 #ifndef __GST_RTP_RTX_RECEIVE_H__ 25 #define __GST_RTP_RTX_RECEIVE_H__ 26 27 #include <gst/gst.h> 28 #include <gst/rtp/gstrtpbuffer.h> 29 30 G_BEGIN_DECLS 31 #define GST_TYPE_RTP_RTX_RECEIVE (gst_rtp_rtx_receive_get_type()) 32 #define GST_RTP_RTX_RECEIVE(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_RTP_RTX_RECEIVE, GstRtpRtxReceive)) 33 #define GST_RTP_RTX_RECEIVE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_RTP_RTX_RECEIVE, GstRtpRtxReceiveClass)) 34 #define GST_RTP_RTX_RECEIVE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_RTP_RTX_RECEIVE, GstRtpRtxReceiveClass)) 35 #define GST_IS_RTP_RTX_RECEIVE(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_RTP_RTX_RECEIVE)) 36 #define GST_IS_RTP_RTX_RECEIVE_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_RTP_RTX_RECEIVE)) 37 typedef struct _GstRtpRtxReceive GstRtpRtxReceive; 38 typedef struct _GstRtpRtxReceiveClass GstRtpRtxReceiveClass; 39 40 struct _GstRtpRtxReceive 41 { 42 GstElement element; 43 44 /* pad */ 45 GstPad *sinkpad; 46 GstPad *srcpad; 47 48 /* retrieve associated master stream from rtx stream 49 * it also works to retrieve rtx stream from master stream 50 * as we make sure all ssrc are unique */ 51 GHashTable *ssrc2_ssrc1_map; 52 53 /* contains seqnum of request packets of whom their ssrc have 54 * not been associated to a rtx stream yet */ 55 GHashTable *seqnum_ssrc1_map; 56 57 /* rtx pt (uint) -> origin pt (uint) */ 58 GHashTable *rtx_pt_map; 59 /* origin pt (string) -> rtx pt (uint) */ 60 GstStructure *rtx_pt_map_structure; 61 62 /* statistics */ 63 guint num_rtx_requests; 64 guint num_rtx_packets; 65 guint num_rtx_assoc_packets; 66 67 GstClockTime last_time; 68 }; 69 70 struct _GstRtpRtxReceiveClass 71 { 72 GstElementClass parent_class; 73 }; 74 75 76 GType gst_rtp_rtx_receive_get_type (void); 77 gboolean gst_rtp_rtx_receive_plugin_init (GstPlugin * plugin); 78 79 G_END_DECLS 80 #endif /* __GST_RTP_RTX_RECEIVE_H__ */ 81