Wim Taymans | ff825a2 | 2013-08-12 16:15:54 +0200 | [diff] [blame] | 1 | /* RTP Retransmission queue element for GStreamer |
| 2 | * |
| 3 | * gstrtprtxqueue.c: |
| 4 | * |
| 5 | * Copyright (C) 2013 Wim Taymans <wim.taymans@gmail.com> |
| 6 | * |
| 7 | * This library is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU Library General Public |
| 9 | * License as published by the Free Software Foundation; either |
| 10 | * version 2 of the License, or (at your option) any later version. |
| 11 | * |
| 12 | * This library is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 15 | * Library General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU Library General Public |
| 18 | * License along with this library; if not, write to the |
| 19 | * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, |
| 20 | * Boston, MA 02110-1301, USA. |
| 21 | */ |
| 22 | |
| 23 | /** |
| 24 | * SECTION:element-rtprtxqueue |
George Kiagiadakis | 3e91601 | 2017-03-20 12:03:29 +0200 | [diff] [blame] | 25 | * |
| 26 | * rtprtxqueue maintains a queue of transmitted RTP packets, up to a |
| 27 | * configurable limit (see #GstRTPRtxQueue::max-size-time, |
| 28 | * #GstRTPRtxQueue::max-size-packets), and retransmits them upon request |
| 29 | * from the downstream rtpsession (GstRTPRetransmissionRequest event). |
| 30 | * |
| 31 | * This element is similar to rtprtxsend, but it has differences: |
| 32 | * - Retransmission from rtprtxqueue is not RFC 4588 compliant. The |
| 33 | * retransmitted packets have the same ssrc and payload type as the original |
| 34 | * stream. |
| 35 | * - As a side-effect of the above, rtprtxqueue does not require the use of |
| 36 | * rtprtxreceive on the receiving end. rtpjitterbuffer alone is able to |
| 37 | * reconstruct the stream. |
| 38 | * - Retransmission from rtprtxqueue happens as soon as the next regular flow |
| 39 | * packet is chained, while rtprtxsend retransmits as soon as the retransmission |
| 40 | * event is received, using a helper thread. |
| 41 | * - rtprtxqueue can be used with rtpbin without the need of hooking to its |
| 42 | * #GstRtpBin::request-aux-sender signal, which means it can be used with |
| 43 | * rtpbin using gst-launch. |
| 44 | * |
| 45 | * See also #GstRtpRtxSend, #GstRtpRtxReceive |
| 46 | * |
| 47 | * # Example pipelines |
| 48 | * |[ |
| 49 | * gst-launch-1.0 rtpbin name=b rtp-profile=avpf \ |
| 50 | * audiotestsrc is-live=true ! opusenc ! rtpopuspay pt=96 ! rtprtxqueue ! b.send_rtp_sink_0 \ |
| 51 | * b.send_rtp_src_0 ! identity drop-probability=0.01 ! udpsink host="127.0.0.1" port=5000 \ |
| 52 | * udpsrc port=5001 ! b.recv_rtcp_sink_0 \ |
| 53 | * b.send_rtcp_src_0 ! udpsink host="127.0.0.1" port=5002 sync=false async=false |
| 54 | * ]| Sender pipeline |
| 55 | * |[ |
| 56 | * gst-launch-1.0 rtpbin name=b rtp-profile=avpf do-retransmission=true \ |
| 57 | * udpsrc port=5000 caps="application/x-rtp,media=(string)audio,clock-rate=(int)48000,encoding-name=(string)OPUS,payload=(int)96" ! \ |
| 58 | * b.recv_rtp_sink_0 \ |
| 59 | * b. ! rtpopusdepay ! opusdec ! audioconvert ! audioresample ! autoaudiosink \ |
| 60 | * udpsrc port=5002 ! b.recv_rtcp_sink_0 \ |
| 61 | * b.send_rtcp_src_0 ! udpsink host="127.0.0.1" port=5001 sync=false async=false |
| 62 | * ]| Receiver pipeline |
Wim Taymans | ff825a2 | 2013-08-12 16:15:54 +0200 | [diff] [blame] | 63 | */ |
| 64 | |
| 65 | #ifdef HAVE_CONFIG_H |
| 66 | #include "config.h" |
| 67 | #endif |
| 68 | |
| 69 | #include <gst/gst.h> |
| 70 | #include <gst/rtp/gstrtpbuffer.h> |
| 71 | #include <string.h> |
| 72 | |
| 73 | #include "gstrtprtxqueue.h" |
| 74 | |
| 75 | GST_DEBUG_CATEGORY_STATIC (gst_rtp_rtx_queue_debug); |
| 76 | #define GST_CAT_DEFAULT gst_rtp_rtx_queue_debug |
| 77 | |
Wim Taymans | 54e7e75 | 2013-08-23 15:47:25 +0200 | [diff] [blame] | 78 | #define DEFAULT_MAX_SIZE_TIME 0 |
| 79 | #define DEFAULT_MAX_SIZE_PACKETS 100 |
| 80 | |
Wim Taymans | ff825a2 | 2013-08-12 16:15:54 +0200 | [diff] [blame] | 81 | enum |
| 82 | { |
| 83 | PROP_0, |
Wim Taymans | 54e7e75 | 2013-08-23 15:47:25 +0200 | [diff] [blame] | 84 | PROP_MAX_SIZE_TIME, |
Mathieu Duponchelle | 191330c | 2017-01-11 18:52:28 +0100 | [diff] [blame] | 85 | PROP_MAX_SIZE_PACKETS, |
| 86 | PROP_REQUESTS, |
| 87 | PROP_FULFILLED_REQUESTS, |
Wim Taymans | ff825a2 | 2013-08-12 16:15:54 +0200 | [diff] [blame] | 88 | }; |
| 89 | |
| 90 | static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src", |
| 91 | GST_PAD_SRC, |
| 92 | GST_PAD_ALWAYS, |
| 93 | GST_STATIC_CAPS ("application/x-rtp") |
| 94 | ); |
| 95 | |
| 96 | static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink", |
| 97 | GST_PAD_SINK, |
| 98 | GST_PAD_ALWAYS, |
| 99 | GST_STATIC_CAPS ("application/x-rtp") |
| 100 | ); |
| 101 | |
| 102 | static gboolean gst_rtp_rtx_queue_src_event (GstPad * pad, GstObject * parent, |
| 103 | GstEvent * event); |
George Kiagiadakis | 7f6c783 | 2017-04-04 17:33:31 +0300 | [diff] [blame] | 104 | static gboolean gst_rtp_rtx_queue_sink_event (GstPad * pad, GstObject * parent, |
| 105 | GstEvent * event); |
Wim Taymans | ff825a2 | 2013-08-12 16:15:54 +0200 | [diff] [blame] | 106 | static GstFlowReturn gst_rtp_rtx_queue_chain (GstPad * pad, GstObject * parent, |
| 107 | GstBuffer * buffer); |
Sebastian Dröge | 57ff27f | 2015-03-19 11:39:38 +0100 | [diff] [blame] | 108 | static GstFlowReturn gst_rtp_rtx_queue_chain_list (GstPad * pad, |
| 109 | GstObject * parent, GstBufferList * list); |
Wim Taymans | ff825a2 | 2013-08-12 16:15:54 +0200 | [diff] [blame] | 110 | |
| 111 | static GstStateChangeReturn gst_rtp_rtx_queue_change_state (GstElement * |
| 112 | element, GstStateChange transition); |
| 113 | |
| 114 | static void gst_rtp_rtx_queue_set_property (GObject * object, guint prop_id, |
| 115 | const GValue * value, GParamSpec * pspec); |
| 116 | static void gst_rtp_rtx_queue_get_property (GObject * object, guint prop_id, |
| 117 | GValue * value, GParamSpec * pspec); |
| 118 | static void gst_rtp_rtx_queue_finalize (GObject * object); |
| 119 | |
| 120 | G_DEFINE_TYPE (GstRTPRtxQueue, gst_rtp_rtx_queue, GST_TYPE_ELEMENT); |
| 121 | |
| 122 | static void |
| 123 | gst_rtp_rtx_queue_class_init (GstRTPRtxQueueClass * klass) |
| 124 | { |
| 125 | GObjectClass *gobject_class; |
| 126 | GstElementClass *gstelement_class; |
| 127 | |
| 128 | gobject_class = (GObjectClass *) klass; |
| 129 | gstelement_class = (GstElementClass *) klass; |
| 130 | |
Wim Taymans | 54e7e75 | 2013-08-23 15:47:25 +0200 | [diff] [blame] | 131 | gobject_class->get_property = gst_rtp_rtx_queue_get_property; |
| 132 | gobject_class->set_property = gst_rtp_rtx_queue_set_property; |
| 133 | gobject_class->finalize = gst_rtp_rtx_queue_finalize; |
| 134 | |
| 135 | g_object_class_install_property (gobject_class, PROP_MAX_SIZE_TIME, |
| 136 | g_param_spec_uint ("max-size-time", "Max Size Times", |
| 137 | "Amount of ms to queue (0 = unlimited)", 0, G_MAXUINT, |
| 138 | DEFAULT_MAX_SIZE_TIME, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); |
| 139 | |
| 140 | g_object_class_install_property (gobject_class, PROP_MAX_SIZE_PACKETS, |
| 141 | g_param_spec_uint ("max-size-packets", "Max Size Packets", |
| 142 | "Amount of packets to queue (0 = unlimited)", 0, G_MAXUINT, |
| 143 | DEFAULT_MAX_SIZE_PACKETS, |
| 144 | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); |
| 145 | |
Mathieu Duponchelle | 191330c | 2017-01-11 18:52:28 +0100 | [diff] [blame] | 146 | g_object_class_install_property (gobject_class, PROP_REQUESTS, |
| 147 | g_param_spec_uint ("requests", "Requests", |
| 148 | "Total number of retransmission requests", 0, G_MAXUINT, |
| 149 | 0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS)); |
| 150 | |
| 151 | g_object_class_install_property (gobject_class, PROP_FULFILLED_REQUESTS, |
| 152 | g_param_spec_uint ("fulfilled-requests", "Fulfilled Requests", |
| 153 | "Number of fulfilled retransmission requests", 0, G_MAXUINT, |
| 154 | 0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS)); |
| 155 | |
Vineeth TM | 1071309 | 2016-03-04 10:30:12 +0900 | [diff] [blame] | 156 | gst_element_class_add_static_pad_template (gstelement_class, &src_factory); |
| 157 | gst_element_class_add_static_pad_template (gstelement_class, &sink_factory); |
Wim Taymans | ff825a2 | 2013-08-12 16:15:54 +0200 | [diff] [blame] | 158 | |
| 159 | gst_element_class_set_static_metadata (gstelement_class, |
| 160 | "RTP Retransmission Queue", "Codec", |
| 161 | "Keep RTP packets in a queue for retransmission", |
| 162 | "Wim Taymans <wim.taymans@gmail.com>"); |
| 163 | |
Wim Taymans | ff825a2 | 2013-08-12 16:15:54 +0200 | [diff] [blame] | 164 | gstelement_class->change_state = |
| 165 | GST_DEBUG_FUNCPTR (gst_rtp_rtx_queue_change_state); |
| 166 | } |
| 167 | |
| 168 | static void |
Wim Taymans | 89b9019 | 2013-08-21 16:53:59 +0200 | [diff] [blame] | 169 | gst_rtp_rtx_queue_reset (GstRTPRtxQueue * rtx, gboolean full) |
| 170 | { |
| 171 | g_mutex_lock (&rtx->lock); |
| 172 | g_queue_foreach (rtx->queue, (GFunc) gst_buffer_unref, NULL); |
| 173 | g_queue_clear (rtx->queue); |
| 174 | g_list_foreach (rtx->pending, (GFunc) gst_buffer_unref, NULL); |
| 175 | g_list_free (rtx->pending); |
| 176 | rtx->pending = NULL; |
Mathieu Duponchelle | 191330c | 2017-01-11 18:52:28 +0100 | [diff] [blame] | 177 | rtx->n_requests = 0; |
| 178 | rtx->n_fulfilled_requests = 0; |
Wim Taymans | 89b9019 | 2013-08-21 16:53:59 +0200 | [diff] [blame] | 179 | g_mutex_unlock (&rtx->lock); |
| 180 | } |
| 181 | |
| 182 | static void |
Wim Taymans | ff825a2 | 2013-08-12 16:15:54 +0200 | [diff] [blame] | 183 | gst_rtp_rtx_queue_finalize (GObject * object) |
| 184 | { |
| 185 | GstRTPRtxQueue *rtx = GST_RTP_RTX_QUEUE (object); |
| 186 | |
Wim Taymans | 89b9019 | 2013-08-21 16:53:59 +0200 | [diff] [blame] | 187 | gst_rtp_rtx_queue_reset (rtx, TRUE); |
Wim Taymans | ff825a2 | 2013-08-12 16:15:54 +0200 | [diff] [blame] | 188 | g_queue_free (rtx->queue); |
Wim Taymans | 89b9019 | 2013-08-21 16:53:59 +0200 | [diff] [blame] | 189 | g_mutex_clear (&rtx->lock); |
Wim Taymans | ff825a2 | 2013-08-12 16:15:54 +0200 | [diff] [blame] | 190 | |
| 191 | G_OBJECT_CLASS (gst_rtp_rtx_queue_parent_class)->finalize (object); |
| 192 | } |
| 193 | |
| 194 | static void |
| 195 | gst_rtp_rtx_queue_init (GstRTPRtxQueue * rtx) |
| 196 | { |
| 197 | GstElementClass *klass = GST_ELEMENT_GET_CLASS (rtx); |
| 198 | |
| 199 | rtx->srcpad = |
| 200 | gst_pad_new_from_template (gst_element_class_get_pad_template (klass, |
| 201 | "src"), "src"); |
| 202 | GST_PAD_SET_PROXY_CAPS (rtx->srcpad); |
| 203 | GST_PAD_SET_PROXY_ALLOCATION (rtx->srcpad); |
| 204 | gst_pad_set_event_function (rtx->srcpad, |
| 205 | GST_DEBUG_FUNCPTR (gst_rtp_rtx_queue_src_event)); |
| 206 | gst_element_add_pad (GST_ELEMENT (rtx), rtx->srcpad); |
| 207 | |
| 208 | rtx->sinkpad = |
| 209 | gst_pad_new_from_template (gst_element_class_get_pad_template (klass, |
| 210 | "sink"), "sink"); |
| 211 | GST_PAD_SET_PROXY_CAPS (rtx->sinkpad); |
| 212 | GST_PAD_SET_PROXY_ALLOCATION (rtx->sinkpad); |
George Kiagiadakis | 7f6c783 | 2017-04-04 17:33:31 +0300 | [diff] [blame] | 213 | gst_pad_set_event_function (rtx->sinkpad, |
| 214 | GST_DEBUG_FUNCPTR (gst_rtp_rtx_queue_sink_event)); |
Wim Taymans | ff825a2 | 2013-08-12 16:15:54 +0200 | [diff] [blame] | 215 | gst_pad_set_chain_function (rtx->sinkpad, |
| 216 | GST_DEBUG_FUNCPTR (gst_rtp_rtx_queue_chain)); |
Sebastian Dröge | 57ff27f | 2015-03-19 11:39:38 +0100 | [diff] [blame] | 217 | gst_pad_set_chain_list_function (rtx->sinkpad, |
| 218 | GST_DEBUG_FUNCPTR (gst_rtp_rtx_queue_chain_list)); |
Wim Taymans | ff825a2 | 2013-08-12 16:15:54 +0200 | [diff] [blame] | 219 | gst_element_add_pad (GST_ELEMENT (rtx), rtx->sinkpad); |
| 220 | |
Wim Taymans | ff825a2 | 2013-08-12 16:15:54 +0200 | [diff] [blame] | 221 | rtx->queue = g_queue_new (); |
Wim Taymans | 89b9019 | 2013-08-21 16:53:59 +0200 | [diff] [blame] | 222 | g_mutex_init (&rtx->lock); |
Wim Taymans | 54e7e75 | 2013-08-23 15:47:25 +0200 | [diff] [blame] | 223 | |
| 224 | rtx->max_size_time = DEFAULT_MAX_SIZE_TIME; |
| 225 | rtx->max_size_packets = DEFAULT_MAX_SIZE_PACKETS; |
Wim Taymans | ff825a2 | 2013-08-12 16:15:54 +0200 | [diff] [blame] | 226 | } |
| 227 | |
| 228 | typedef struct |
| 229 | { |
| 230 | GstRTPRtxQueue *rtx; |
| 231 | guint seqnum; |
Wim Taymans | 89b9019 | 2013-08-21 16:53:59 +0200 | [diff] [blame] | 232 | gboolean found; |
Wim Taymans | ff825a2 | 2013-08-12 16:15:54 +0200 | [diff] [blame] | 233 | } RTXData; |
| 234 | |
| 235 | static void |
| 236 | push_seqnum (GstBuffer * buffer, RTXData * data) |
| 237 | { |
| 238 | GstRTPRtxQueue *rtx = data->rtx; |
| 239 | GstRTPBuffer rtpbuffer = GST_RTP_BUFFER_INIT; |
| 240 | guint16 seqnum; |
| 241 | |
Wim Taymans | 89b9019 | 2013-08-21 16:53:59 +0200 | [diff] [blame] | 242 | if (data->found) |
| 243 | return; |
| 244 | |
George Kiagiadakis | 7f6c783 | 2017-04-04 17:33:31 +0300 | [diff] [blame] | 245 | if (!GST_IS_BUFFER (buffer) || |
| 246 | !gst_rtp_buffer_map (buffer, GST_MAP_READ, &rtpbuffer)) |
Wim Taymans | ff825a2 | 2013-08-12 16:15:54 +0200 | [diff] [blame] | 247 | return; |
| 248 | |
| 249 | seqnum = gst_rtp_buffer_get_seq (&rtpbuffer); |
| 250 | gst_rtp_buffer_unmap (&rtpbuffer); |
| 251 | |
| 252 | if (seqnum == data->seqnum) { |
Wim Taymans | 89b9019 | 2013-08-21 16:53:59 +0200 | [diff] [blame] | 253 | data->found = TRUE; |
| 254 | GST_DEBUG_OBJECT (rtx, "found %d", seqnum); |
| 255 | rtx->pending = g_list_prepend (rtx->pending, gst_buffer_ref (buffer)); |
Wim Taymans | ff825a2 | 2013-08-12 16:15:54 +0200 | [diff] [blame] | 256 | } |
| 257 | } |
| 258 | |
| 259 | static gboolean |
| 260 | gst_rtp_rtx_queue_src_event (GstPad * pad, GstObject * parent, GstEvent * event) |
| 261 | { |
| 262 | GstRTPRtxQueue *rtx = GST_RTP_RTX_QUEUE (parent); |
| 263 | gboolean res; |
| 264 | |
| 265 | switch (GST_EVENT_TYPE (event)) { |
| 266 | case GST_EVENT_CUSTOM_UPSTREAM: |
| 267 | { |
| 268 | const GstStructure *s; |
| 269 | |
| 270 | s = gst_event_get_structure (event); |
| 271 | if (gst_structure_has_name (s, "GstRTPRetransmissionRequest")) { |
| 272 | guint seqnum; |
| 273 | RTXData data; |
| 274 | |
| 275 | if (!gst_structure_get_uint (s, "seqnum", &seqnum)) |
| 276 | seqnum = -1; |
| 277 | |
Wim Taymans | 89b9019 | 2013-08-21 16:53:59 +0200 | [diff] [blame] | 278 | GST_DEBUG_OBJECT (rtx, "request %d", seqnum); |
| 279 | |
| 280 | g_mutex_lock (&rtx->lock); |
Wim Taymans | ff825a2 | 2013-08-12 16:15:54 +0200 | [diff] [blame] | 281 | data.rtx = rtx; |
| 282 | data.seqnum = seqnum; |
Wim Taymans | 89b9019 | 2013-08-21 16:53:59 +0200 | [diff] [blame] | 283 | data.found = FALSE; |
Mathieu Duponchelle | 191330c | 2017-01-11 18:52:28 +0100 | [diff] [blame] | 284 | rtx->n_requests += 1; |
Wim Taymans | ff825a2 | 2013-08-12 16:15:54 +0200 | [diff] [blame] | 285 | g_queue_foreach (rtx->queue, (GFunc) push_seqnum, &data); |
Wim Taymans | 89b9019 | 2013-08-21 16:53:59 +0200 | [diff] [blame] | 286 | g_mutex_unlock (&rtx->lock); |
| 287 | |
Wim Taymans | ff825a2 | 2013-08-12 16:15:54 +0200 | [diff] [blame] | 288 | gst_event_unref (event); |
| 289 | res = TRUE; |
| 290 | } else { |
| 291 | res = gst_pad_event_default (pad, parent, event); |
| 292 | } |
| 293 | break; |
| 294 | } |
| 295 | default: |
| 296 | res = gst_pad_event_default (pad, parent, event); |
| 297 | break; |
| 298 | } |
| 299 | return res; |
| 300 | } |
| 301 | |
George Kiagiadakis | 7f6c783 | 2017-04-04 17:33:31 +0300 | [diff] [blame] | 302 | static gboolean |
| 303 | gst_rtp_rtx_queue_sink_event (GstPad * pad, GstObject * parent, |
| 304 | GstEvent * event) |
| 305 | { |
| 306 | GstRTPRtxQueue *rtx = GST_RTP_RTX_QUEUE (parent); |
| 307 | gboolean res; |
| 308 | |
| 309 | switch (GST_EVENT_TYPE (event)) { |
| 310 | case GST_EVENT_SEGMENT: |
| 311 | { |
| 312 | g_mutex_lock (&rtx->lock); |
| 313 | gst_event_copy_segment (event, &rtx->head_segment); |
| 314 | g_queue_push_head (rtx->queue, gst_event_ref (event)); |
| 315 | g_mutex_unlock (&rtx->lock); |
| 316 | /* fall through */ |
| 317 | } |
| 318 | default: |
| 319 | res = gst_pad_event_default (pad, parent, event); |
| 320 | break; |
| 321 | } |
| 322 | return res; |
| 323 | } |
| 324 | |
Wim Taymans | 89b9019 | 2013-08-21 16:53:59 +0200 | [diff] [blame] | 325 | static void |
| 326 | do_push (GstBuffer * buffer, GstRTPRtxQueue * rtx) |
| 327 | { |
Mathieu Duponchelle | 191330c | 2017-01-11 18:52:28 +0100 | [diff] [blame] | 328 | rtx->n_fulfilled_requests += 1; |
Wim Taymans | 89b9019 | 2013-08-21 16:53:59 +0200 | [diff] [blame] | 329 | gst_pad_push (rtx->srcpad, buffer); |
| 330 | } |
| 331 | |
George Kiagiadakis | 7f6c783 | 2017-04-04 17:33:31 +0300 | [diff] [blame] | 332 | static guint32 |
| 333 | get_ts_diff (GstRTPRtxQueue * rtx) |
| 334 | { |
| 335 | GstClockTime high_ts, low_ts; |
| 336 | GstClockTimeDiff result; |
| 337 | GstBuffer *high_buf, *low_buf; |
| 338 | |
| 339 | high_buf = g_queue_peek_head (rtx->queue); |
| 340 | |
| 341 | while (GST_IS_EVENT ((low_buf = g_queue_peek_tail (rtx->queue)))) { |
| 342 | GstEvent *event = g_queue_pop_tail (rtx->queue); |
| 343 | gst_event_copy_segment (event, &rtx->tail_segment); |
| 344 | gst_event_unref (event); |
| 345 | } |
| 346 | |
| 347 | if (!high_buf || !low_buf || high_buf == low_buf) |
| 348 | return 0; |
| 349 | |
| 350 | high_ts = GST_BUFFER_TIMESTAMP (high_buf); |
| 351 | low_ts = GST_BUFFER_TIMESTAMP (low_buf); |
| 352 | |
| 353 | high_ts = gst_segment_to_running_time (&rtx->head_segment, GST_FORMAT_TIME, |
| 354 | high_ts); |
| 355 | low_ts = gst_segment_to_running_time (&rtx->tail_segment, GST_FORMAT_TIME, |
| 356 | low_ts); |
| 357 | |
| 358 | result = high_ts - low_ts; |
| 359 | |
| 360 | /* return value in ms instead of ns */ |
| 361 | return (guint32) gst_util_uint64_scale_int (result, 1, GST_MSECOND); |
| 362 | } |
| 363 | |
Sebastian Dröge | 57ff27f | 2015-03-19 11:39:38 +0100 | [diff] [blame] | 364 | /* Must be called with rtx->lock */ |
| 365 | static void |
| 366 | shrink_queue (GstRTPRtxQueue * rtx) |
| 367 | { |
| 368 | if (rtx->max_size_packets) { |
| 369 | while (g_queue_get_length (rtx->queue) > rtx->max_size_packets) |
| 370 | gst_buffer_unref (g_queue_pop_tail (rtx->queue)); |
| 371 | } |
George Kiagiadakis | 7f6c783 | 2017-04-04 17:33:31 +0300 | [diff] [blame] | 372 | if (rtx->max_size_time) { |
| 373 | while (get_ts_diff (rtx) > rtx->max_size_time) |
| 374 | gst_buffer_unref (g_queue_pop_tail (rtx->queue)); |
| 375 | } |
Sebastian Dröge | 57ff27f | 2015-03-19 11:39:38 +0100 | [diff] [blame] | 376 | } |
| 377 | |
Wim Taymans | ff825a2 | 2013-08-12 16:15:54 +0200 | [diff] [blame] | 378 | static GstFlowReturn |
| 379 | gst_rtp_rtx_queue_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer) |
| 380 | { |
| 381 | GstRTPRtxQueue *rtx; |
| 382 | GstFlowReturn ret; |
Wim Taymans | 89b9019 | 2013-08-21 16:53:59 +0200 | [diff] [blame] | 383 | GList *pending; |
Wim Taymans | ff825a2 | 2013-08-12 16:15:54 +0200 | [diff] [blame] | 384 | |
| 385 | rtx = GST_RTP_RTX_QUEUE (parent); |
| 386 | |
Wim Taymans | 89b9019 | 2013-08-21 16:53:59 +0200 | [diff] [blame] | 387 | g_mutex_lock (&rtx->lock); |
Wim Taymans | ff825a2 | 2013-08-12 16:15:54 +0200 | [diff] [blame] | 388 | g_queue_push_head (rtx->queue, gst_buffer_ref (buffer)); |
Sebastian Dröge | 57ff27f | 2015-03-19 11:39:38 +0100 | [diff] [blame] | 389 | shrink_queue (rtx); |
Wim Taymans | 54e7e75 | 2013-08-23 15:47:25 +0200 | [diff] [blame] | 390 | |
Wim Taymans | 89b9019 | 2013-08-21 16:53:59 +0200 | [diff] [blame] | 391 | pending = rtx->pending; |
| 392 | rtx->pending = NULL; |
| 393 | g_mutex_unlock (&rtx->lock); |
| 394 | |
Miguel París Díaz | 40957a9 | 2015-06-19 14:50:59 +0200 | [diff] [blame] | 395 | pending = g_list_reverse (pending); |
Wim Taymans | 89b9019 | 2013-08-21 16:53:59 +0200 | [diff] [blame] | 396 | g_list_foreach (pending, (GFunc) do_push, rtx); |
| 397 | g_list_free (pending); |
Wim Taymans | ff825a2 | 2013-08-12 16:15:54 +0200 | [diff] [blame] | 398 | |
| 399 | ret = gst_pad_push (rtx->srcpad, buffer); |
| 400 | |
| 401 | return ret; |
| 402 | } |
| 403 | |
Sebastian Dröge | 57ff27f | 2015-03-19 11:39:38 +0100 | [diff] [blame] | 404 | static gboolean |
| 405 | push_to_queue (GstBuffer ** buffer, guint idx, gpointer user_data) |
| 406 | { |
| 407 | GQueue *queue = user_data; |
| 408 | |
| 409 | g_queue_push_head (queue, gst_buffer_ref (*buffer)); |
| 410 | |
| 411 | return TRUE; |
| 412 | } |
| 413 | |
| 414 | static GstFlowReturn |
| 415 | gst_rtp_rtx_queue_chain_list (GstPad * pad, GstObject * parent, |
| 416 | GstBufferList * list) |
| 417 | { |
| 418 | GstRTPRtxQueue *rtx; |
| 419 | GstFlowReturn ret; |
| 420 | GList *pending; |
| 421 | |
| 422 | rtx = GST_RTP_RTX_QUEUE (parent); |
| 423 | |
| 424 | g_mutex_lock (&rtx->lock); |
| 425 | gst_buffer_list_foreach (list, push_to_queue, rtx->queue); |
| 426 | shrink_queue (rtx); |
| 427 | |
| 428 | pending = rtx->pending; |
| 429 | rtx->pending = NULL; |
| 430 | g_mutex_unlock (&rtx->lock); |
| 431 | |
Miguel París Díaz | 40957a9 | 2015-06-19 14:50:59 +0200 | [diff] [blame] | 432 | pending = g_list_reverse (pending); |
Sebastian Dröge | 57ff27f | 2015-03-19 11:39:38 +0100 | [diff] [blame] | 433 | g_list_foreach (pending, (GFunc) do_push, rtx); |
| 434 | g_list_free (pending); |
| 435 | |
| 436 | ret = gst_pad_push_list (rtx->srcpad, list); |
| 437 | |
| 438 | return ret; |
| 439 | } |
| 440 | |
Wim Taymans | ff825a2 | 2013-08-12 16:15:54 +0200 | [diff] [blame] | 441 | static void |
| 442 | gst_rtp_rtx_queue_get_property (GObject * object, |
| 443 | guint prop_id, GValue * value, GParamSpec * pspec) |
| 444 | { |
Wim Taymans | 54e7e75 | 2013-08-23 15:47:25 +0200 | [diff] [blame] | 445 | GstRTPRtxQueue *rtx = GST_RTP_RTX_QUEUE (object); |
| 446 | |
Wim Taymans | ff825a2 | 2013-08-12 16:15:54 +0200 | [diff] [blame] | 447 | switch (prop_id) { |
Wim Taymans | 54e7e75 | 2013-08-23 15:47:25 +0200 | [diff] [blame] | 448 | case PROP_MAX_SIZE_TIME: |
| 449 | g_value_set_uint (value, rtx->max_size_time); |
| 450 | break; |
| 451 | case PROP_MAX_SIZE_PACKETS: |
| 452 | g_value_set_uint (value, rtx->max_size_packets); |
| 453 | break; |
Mathieu Duponchelle | 191330c | 2017-01-11 18:52:28 +0100 | [diff] [blame] | 454 | case PROP_REQUESTS: |
| 455 | g_value_set_uint (value, rtx->n_requests); |
| 456 | break; |
| 457 | case PROP_FULFILLED_REQUESTS: |
| 458 | g_value_set_uint (value, rtx->n_fulfilled_requests); |
| 459 | break; |
Wim Taymans | ff825a2 | 2013-08-12 16:15:54 +0200 | [diff] [blame] | 460 | default: |
| 461 | G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
| 462 | break; |
| 463 | } |
| 464 | } |
| 465 | |
| 466 | static void |
| 467 | gst_rtp_rtx_queue_set_property (GObject * object, |
| 468 | guint prop_id, const GValue * value, GParamSpec * pspec) |
| 469 | { |
Wim Taymans | 54e7e75 | 2013-08-23 15:47:25 +0200 | [diff] [blame] | 470 | GstRTPRtxQueue *rtx = GST_RTP_RTX_QUEUE (object); |
| 471 | |
Wim Taymans | ff825a2 | 2013-08-12 16:15:54 +0200 | [diff] [blame] | 472 | switch (prop_id) { |
Wim Taymans | 54e7e75 | 2013-08-23 15:47:25 +0200 | [diff] [blame] | 473 | case PROP_MAX_SIZE_TIME: |
| 474 | rtx->max_size_time = g_value_get_uint (value); |
| 475 | break; |
| 476 | case PROP_MAX_SIZE_PACKETS: |
| 477 | rtx->max_size_packets = g_value_get_uint (value); |
| 478 | break; |
Wim Taymans | ff825a2 | 2013-08-12 16:15:54 +0200 | [diff] [blame] | 479 | default: |
| 480 | G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
| 481 | break; |
| 482 | } |
| 483 | } |
| 484 | |
| 485 | static GstStateChangeReturn |
| 486 | gst_rtp_rtx_queue_change_state (GstElement * element, GstStateChange transition) |
| 487 | { |
| 488 | GstStateChangeReturn ret; |
Wim Taymans | 89b9019 | 2013-08-21 16:53:59 +0200 | [diff] [blame] | 489 | GstRTPRtxQueue *rtx; |
| 490 | |
| 491 | rtx = GST_RTP_RTX_QUEUE (element); |
Wim Taymans | ff825a2 | 2013-08-12 16:15:54 +0200 | [diff] [blame] | 492 | |
| 493 | switch (transition) { |
| 494 | default: |
| 495 | break; |
| 496 | } |
| 497 | |
| 498 | ret = |
| 499 | GST_ELEMENT_CLASS (gst_rtp_rtx_queue_parent_class)->change_state (element, |
| 500 | transition); |
| 501 | |
| 502 | switch (transition) { |
Wim Taymans | 89b9019 | 2013-08-21 16:53:59 +0200 | [diff] [blame] | 503 | case GST_STATE_CHANGE_PAUSED_TO_READY: |
| 504 | gst_rtp_rtx_queue_reset (rtx, TRUE); |
| 505 | break; |
Wim Taymans | ff825a2 | 2013-08-12 16:15:54 +0200 | [diff] [blame] | 506 | default: |
| 507 | break; |
| 508 | } |
| 509 | |
| 510 | return ret; |
| 511 | } |
| 512 | |
| 513 | gboolean |
| 514 | gst_rtp_rtx_queue_plugin_init (GstPlugin * plugin) |
| 515 | { |
| 516 | GST_DEBUG_CATEGORY_INIT (gst_rtp_rtx_queue_debug, "rtprtxqueue", 0, |
| 517 | "rtp retransmission queue"); |
| 518 | |
| 519 | return gst_element_register (plugin, "rtprtxqueue", GST_RANK_NONE, |
| 520 | GST_TYPE_RTP_RTX_QUEUE); |
| 521 | } |