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 typedef struct _GstRtpRtxReceive GstRtpRtxReceive; 32 typedef struct _GstRtpRtxReceiveClass GstRtpRtxReceiveClass; 33 34 #define GST_TYPE_RTP_RTX_RECEIVE (gst_rtp_rtx_receive_get_type()) 35 #define GST_RTP_RTX_RECEIVE(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_RTP_RTX_RECEIVE, GstRtpRtxReceive)) 36 #define GST_RTP_RTX_RECEIVE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_RTP_RTX_RECEIVE, GstRtpRtxReceiveClass)) 37 #define GST_RTP_RTX_RECEIVE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_RTP_RTX_RECEIVE, GstRtpRtxReceiveClass)) 38 #define GST_IS_RTP_RTX_RECEIVE(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_RTP_RTX_RECEIVE)) 39 #define GST_IS_RTP_RTX_RECEIVE_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_RTP_RTX_RECEIVE)) 40 #define GST_RTP_RTX_RECEIVE_CAST(obj) ((GstRtpRtxReceive *)(obj)) 41 42 struct _GstRtpRtxReceive 43 { 44 GstElement element; 45 46 /* pad */ 47 GstPad *sinkpad; 48 GstPad *srcpad; 49 50 /* retrieve associated master stream from rtx stream 51 * it also works to retrieve rtx stream from master stream 52 * as we make sure all ssrc are unique */ 53 GHashTable *ssrc2_ssrc1_map; 54 55 /* contains seqnum of request packets of whom their ssrc have 56 * not been associated to a rtx stream yet */ 57 GHashTable *seqnum_ssrc1_map; 58 59 /* rtx pt (uint) -> origin pt (uint) */ 60 GHashTable *rtx_pt_map; 61 /* origin pt (string) -> rtx pt (uint) */ 62 GstStructure *rtx_pt_map_structure; 63 64 /* statistics */ 65 guint num_rtx_requests; 66 guint num_rtx_packets; 67 guint num_rtx_assoc_packets; 68 69 GstClockTime last_time; 70 }; 71 72 struct _GstRtpRtxReceiveClass 73 { 74 GstElementClass parent_class; 75 }; 76 77 78 GType gst_rtp_rtx_receive_get_type (void); 79 80 GST_ELEMENT_REGISTER_DECLARE (rtprtxreceive); 81 82 G_END_DECLS 83 #endif /* __GST_RTP_RTX_RECEIVE_H__ */ 84