| /* GStreamer |
| * Copyright (C) <2010> 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., 51 Franklin St, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| */ |
| |
| #ifdef HAVE_CONFIG_H |
| # include "config.h" |
| #endif |
| |
| #include <string.h> |
| |
| #include <gst/rtp/gstrtpbuffer.h> |
| |
| #include "gstrtpgstpay.h" |
| #include "gstrtputils.h" |
| |
| GST_DEBUG_CATEGORY_STATIC (gst_rtp_pay_debug); |
| #define GST_CAT_DEFAULT gst_rtp_pay_debug |
| |
| /* |
| * 0 1 2 3 |
| * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * |C| CV |D|0|0|0| ETYPE | MBZ | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Frag_offset | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * |
| * C: caps inlined flag |
| * When C set, first part of payload contains caps definition. Caps definition |
| * starts with variable-length length prefix and then a string of that length. |
| * the length is encoded in big endian 7 bit chunks, the top 1 bit of a byte |
| * is the continuation marker and the 7 next bits the data. A continuation |
| * marker of 1 means that the next byte contains more data. |
| * |
| * CV: caps version, 0 = caps from SDP, 1 - 7 inlined caps |
| * D: delta unit buffer |
| * ETYPE: type of event. Payload contains the event, prefixed with a |
| * variable length field. |
| * 0 = NO event |
| * 1 = GST_EVENT_TAG |
| * 2 = GST_EVENT_CUSTOM_DOWNSTREAM |
| * 3 = GST_EVENT_CUSTOM_BOTH |
| * 4 = GST_EVENT_STREAM_START |
| */ |
| |
| static GstStaticPadTemplate gst_rtp_gst_pay_sink_template = |
| GST_STATIC_PAD_TEMPLATE ("sink", |
| GST_PAD_SINK, |
| GST_PAD_ALWAYS, |
| GST_STATIC_CAPS_ANY); |
| |
| static GstStaticPadTemplate gst_rtp_gst_pay_src_template = |
| GST_STATIC_PAD_TEMPLATE ("src", |
| GST_PAD_SRC, |
| GST_PAD_ALWAYS, |
| GST_STATIC_CAPS ("application/x-rtp, " |
| "media = (string) \"application\", " |
| "payload = (int) " GST_RTP_PAYLOAD_DYNAMIC_STRING ", " |
| "clock-rate = (int) 90000, " "encoding-name = (string) \"X-GST\"") |
| ); |
| |
| enum |
| { |
| PROP_0, |
| PROP_CONFIG_INTERVAL |
| }; |
| |
| #define DEFAULT_CONFIG_INTERVAL 0 |
| |
| static void gst_rtp_gst_pay_set_property (GObject * object, guint prop_id, |
| const GValue * value, GParamSpec * pspec); |
| static void gst_rtp_gst_pay_get_property (GObject * object, guint prop_id, |
| GValue * value, GParamSpec * pspec); |
| static void gst_rtp_gst_pay_finalize (GObject * obj); |
| static GstStateChangeReturn gst_rtp_gst_pay_change_state (GstElement * element, |
| GstStateChange transition); |
| |
| static gboolean gst_rtp_gst_pay_setcaps (GstRTPBasePayload * payload, |
| GstCaps * caps); |
| static GstFlowReturn gst_rtp_gst_pay_handle_buffer (GstRTPBasePayload * payload, |
| GstBuffer * buffer); |
| static gboolean gst_rtp_gst_pay_sink_event (GstRTPBasePayload * payload, |
| GstEvent * event); |
| |
| #define gst_rtp_gst_pay_parent_class parent_class |
| G_DEFINE_TYPE (GstRtpGSTPay, gst_rtp_gst_pay, GST_TYPE_RTP_BASE_PAYLOAD); |
| |
| static void |
| gst_rtp_gst_pay_class_init (GstRtpGSTPayClass * klass) |
| { |
| GObjectClass *gobject_class; |
| GstElementClass *gstelement_class; |
| GstRTPBasePayloadClass *gstrtpbasepayload_class; |
| |
| gobject_class = (GObjectClass *) klass; |
| gstelement_class = (GstElementClass *) klass; |
| gstrtpbasepayload_class = (GstRTPBasePayloadClass *) klass; |
| |
| gobject_class->set_property = gst_rtp_gst_pay_set_property; |
| gobject_class->get_property = gst_rtp_gst_pay_get_property; |
| gobject_class->finalize = gst_rtp_gst_pay_finalize; |
| |
| g_object_class_install_property (G_OBJECT_CLASS (klass), |
| PROP_CONFIG_INTERVAL, |
| g_param_spec_uint ("config-interval", |
| "Caps/Tags Send Interval", |
| "Interval for sending caps and TAG events in seconds (0 = disabled)", |
| 0, 3600, DEFAULT_CONFIG_INTERVAL, |
| G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS) |
| ); |
| |
| gstelement_class->change_state = gst_rtp_gst_pay_change_state; |
| |
| gst_element_class_add_static_pad_template (gstelement_class, |
| &gst_rtp_gst_pay_src_template); |
| gst_element_class_add_static_pad_template (gstelement_class, |
| &gst_rtp_gst_pay_sink_template); |
| |
| gst_element_class_set_static_metadata (gstelement_class, |
| "RTP GStreamer payloader", "Codec/Payloader/Network/RTP", |
| "Payload GStreamer buffers as RTP packets", |
| "Wim Taymans <wim.taymans@gmail.com>"); |
| |
| gstrtpbasepayload_class->set_caps = gst_rtp_gst_pay_setcaps; |
| gstrtpbasepayload_class->handle_buffer = gst_rtp_gst_pay_handle_buffer; |
| gstrtpbasepayload_class->sink_event = gst_rtp_gst_pay_sink_event; |
| |
| GST_DEBUG_CATEGORY_INIT (gst_rtp_pay_debug, "rtpgstpay", 0, |
| "rtpgstpay element"); |
| } |
| |
| static void |
| gst_rtp_gst_pay_init (GstRtpGSTPay * rtpgstpay) |
| { |
| rtpgstpay->adapter = gst_adapter_new (); |
| rtpgstpay->pending_buffers = NULL; |
| gst_rtp_base_payload_set_options (GST_RTP_BASE_PAYLOAD (rtpgstpay), |
| "application", TRUE, "X-GST", 90000); |
| rtpgstpay->last_config = GST_CLOCK_TIME_NONE; |
| rtpgstpay->taglist = NULL; |
| rtpgstpay->config_interval = DEFAULT_CONFIG_INTERVAL; |
| } |
| |
| static void |
| gst_rtp_gst_pay_reset (GstRtpGSTPay * rtpgstpay, gboolean full) |
| { |
| rtpgstpay->last_config = GST_CLOCK_TIME_NONE; |
| gst_adapter_clear (rtpgstpay->adapter); |
| rtpgstpay->flags &= 0x70; |
| rtpgstpay->etype = 0; |
| if (rtpgstpay->pending_buffers) |
| g_list_free_full (rtpgstpay->pending_buffers, |
| (GDestroyNotify) gst_buffer_list_unref); |
| rtpgstpay->pending_buffers = NULL; |
| if (full) { |
| if (rtpgstpay->taglist) |
| gst_tag_list_unref (rtpgstpay->taglist); |
| rtpgstpay->taglist = NULL; |
| g_free (rtpgstpay->stream_id); |
| rtpgstpay->stream_id = NULL; |
| rtpgstpay->current_CV = 0; |
| rtpgstpay->next_CV = 0; |
| } |
| } |
| |
| static void |
| gst_rtp_gst_pay_finalize (GObject * obj) |
| { |
| GstRtpGSTPay *rtpgstpay; |
| |
| rtpgstpay = GST_RTP_GST_PAY (obj); |
| |
| gst_rtp_gst_pay_reset (rtpgstpay, TRUE); |
| |
| g_object_unref (rtpgstpay->adapter); |
| |
| G_OBJECT_CLASS (parent_class)->finalize (obj); |
| } |
| |
| static void |
| gst_rtp_gst_pay_set_property (GObject * object, guint prop_id, |
| const GValue * value, GParamSpec * pspec) |
| { |
| GstRtpGSTPay *rtpgstpay; |
| |
| rtpgstpay = GST_RTP_GST_PAY (object); |
| |
| switch (prop_id) { |
| case PROP_CONFIG_INTERVAL: |
| rtpgstpay->config_interval = g_value_get_uint (value); |
| break; |
| default: |
| G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
| break; |
| } |
| } |
| |
| static void |
| gst_rtp_gst_pay_get_property (GObject * object, guint prop_id, |
| GValue * value, GParamSpec * pspec) |
| { |
| GstRtpGSTPay *rtpgstpay; |
| |
| rtpgstpay = GST_RTP_GST_PAY (object); |
| |
| switch (prop_id) { |
| case PROP_CONFIG_INTERVAL: |
| g_value_set_uint (value, rtpgstpay->config_interval); |
| break; |
| default: |
| G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
| break; |
| } |
| } |
| |
| static GstStateChangeReturn |
| gst_rtp_gst_pay_change_state (GstElement * element, GstStateChange transition) |
| { |
| GstRtpGSTPay *rtpgstpay; |
| GstStateChangeReturn ret; |
| |
| rtpgstpay = GST_RTP_GST_PAY (element); |
| |
| switch (transition) { |
| case GST_STATE_CHANGE_READY_TO_PAUSED: |
| gst_rtp_gst_pay_reset (rtpgstpay, TRUE); |
| break; |
| default: |
| break; |
| } |
| |
| ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition); |
| |
| switch (transition) { |
| case GST_STATE_CHANGE_PAUSED_TO_READY: |
| gst_rtp_gst_pay_reset (rtpgstpay, TRUE); |
| break; |
| default: |
| break; |
| } |
| return ret; |
| } |
| |
| #define RTP_HEADER_LEN 12 |
| |
| static gboolean |
| gst_rtp_gst_pay_create_from_adapter (GstRtpGSTPay * rtpgstpay, |
| GstClockTime timestamp) |
| { |
| guint avail, mtu; |
| guint frag_offset; |
| GstBufferList *list; |
| |
| avail = gst_adapter_available (rtpgstpay->adapter); |
| if (avail == 0) |
| return FALSE; |
| |
| mtu = GST_RTP_BASE_PAYLOAD_MTU (rtpgstpay); |
| |
| list = gst_buffer_list_new_sized ((avail / (mtu - (RTP_HEADER_LEN + 8))) + 1); |
| frag_offset = 0; |
| |
| while (avail) { |
| guint towrite; |
| guint8 *payload; |
| guint payload_len; |
| guint packet_len; |
| GstBuffer *outbuf; |
| GstRTPBuffer rtp = { NULL }; |
| GstBuffer *paybuf; |
| |
| |
| /* this will be the total lenght of the packet */ |
| packet_len = gst_rtp_buffer_calc_packet_len (8 + avail, 0, 0); |
| |
| /* fill one MTU or all available bytes */ |
| towrite = MIN (packet_len, mtu); |
| |
| /* this is the payload length */ |
| payload_len = gst_rtp_buffer_calc_payload_len (towrite, 0, 0); |
| |
| /* create buffer to hold the header */ |
| outbuf = gst_rtp_buffer_new_allocate (8, 0, 0); |
| |
| gst_rtp_buffer_map (outbuf, GST_MAP_WRITE, &rtp); |
| payload = gst_rtp_buffer_get_payload (&rtp); |
| |
| GST_DEBUG_OBJECT (rtpgstpay, "new packet len %u, frag %u", packet_len, |
| frag_offset); |
| |
| /* |
| * 0 1 2 3 |
| * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * |C| CV |D|0|0|0| ETYPE | MBZ | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| * | Frag_offset | |
| * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| */ |
| payload[0] = rtpgstpay->flags; |
| payload[1] = rtpgstpay->etype; |
| payload[2] = payload[3] = 0; |
| payload[4] = frag_offset >> 24; |
| payload[5] = frag_offset >> 16; |
| payload[6] = frag_offset >> 8; |
| payload[7] = frag_offset & 0xff; |
| |
| payload += 8; |
| payload_len -= 8; |
| |
| frag_offset += payload_len; |
| avail -= payload_len; |
| |
| if (avail == 0) |
| gst_rtp_buffer_set_marker (&rtp, TRUE); |
| |
| gst_rtp_buffer_unmap (&rtp); |
| |
| /* create a new buf to hold the payload */ |
| GST_DEBUG_OBJECT (rtpgstpay, "take %u bytes from adapter", payload_len); |
| paybuf = gst_adapter_take_buffer_fast (rtpgstpay->adapter, payload_len); |
| |
| /* create a new group to hold the rtp header and the payload */ |
| gst_rtp_copy_meta (GST_ELEMENT_CAST (rtpgstpay), outbuf, paybuf, 0); |
| outbuf = gst_buffer_append (outbuf, paybuf); |
| |
| GST_BUFFER_PTS (outbuf) = timestamp; |
| |
| /* and add to list */ |
| gst_buffer_list_insert (list, -1, outbuf); |
| } |
| |
| rtpgstpay->flags &= 0x70; |
| rtpgstpay->etype = 0; |
| rtpgstpay->pending_buffers = g_list_append (rtpgstpay->pending_buffers, list); |
| |
| return TRUE; |
| } |
| |
| static GstFlowReturn |
| gst_rtp_gst_pay_flush (GstRtpGSTPay * rtpgstpay, GstClockTime timestamp) |
| { |
| GstFlowReturn ret = GST_FLOW_OK; |
| GList *iter; |
| |
| gst_rtp_gst_pay_create_from_adapter (rtpgstpay, timestamp); |
| |
| iter = rtpgstpay->pending_buffers; |
| while (iter) { |
| GstBufferList *list = iter->data; |
| |
| rtpgstpay->pending_buffers = iter = |
| g_list_delete_link (rtpgstpay->pending_buffers, iter); |
| |
| /* push the whole buffer list at once */ |
| ret = gst_rtp_base_payload_push_list (GST_RTP_BASE_PAYLOAD (rtpgstpay), |
| list); |
| if (ret != GST_FLOW_OK) |
| break; |
| } |
| |
| return ret; |
| } |
| |
| static GstBuffer * |
| make_data_buffer (GstRtpGSTPay * rtpgstpay, gchar * data, guint size) |
| { |
| guint plen; |
| guint8 *ptr; |
| GstBuffer *outbuf; |
| GstMapInfo map; |
| |
| /* calculate length */ |
| plen = 1; |
| while (size >> (7 * plen)) |
| plen++; |
| |
| outbuf = gst_buffer_new_allocate (NULL, plen + size, NULL); |
| |
| gst_buffer_map (outbuf, &map, GST_MAP_WRITE); |
| ptr = map.data; |
| |
| /* write length */ |
| while (plen) { |
| plen--; |
| *ptr++ = ((plen > 0) ? 0x80 : 0) | ((size >> (7 * plen)) & 0x7f); |
| } |
| /* copy data */ |
| memcpy (ptr, data, size); |
| gst_buffer_unmap (outbuf, &map); |
| |
| return outbuf; |
| } |
| |
| static void |
| gst_rtp_gst_pay_send_caps (GstRtpGSTPay * rtpgstpay, guint8 cv, GstCaps * caps) |
| { |
| gchar *capsstr; |
| guint capslen; |
| GstBuffer *outbuf; |
| |
| if (rtpgstpay->flags & (1 << 7)) |
| return; |
| |
| capsstr = gst_caps_to_string (caps); |
| capslen = strlen (capsstr); |
| /* for 0 byte */ |
| capslen++; |
| |
| GST_DEBUG_OBJECT (rtpgstpay, "sending caps=%s", capsstr); |
| |
| /* make a data buffer of it */ |
| outbuf = make_data_buffer (rtpgstpay, capsstr, capslen); |
| g_free (capsstr); |
| |
| /* store in adapter, we don't flush yet, buffer might follow */ |
| rtpgstpay->flags = (1 << 7) | (cv << 4); |
| gst_adapter_push (rtpgstpay->adapter, outbuf); |
| } |
| |
| static gboolean |
| gst_rtp_gst_pay_setcaps (GstRTPBasePayload * payload, GstCaps * caps) |
| { |
| GstRtpGSTPay *rtpgstpay; |
| gboolean res; |
| gchar *capsstr, *capsenc, *capsver; |
| guint capslen; |
| |
| rtpgstpay = GST_RTP_GST_PAY (payload); |
| |
| capsstr = gst_caps_to_string (caps); |
| capslen = strlen (capsstr); |
| |
| /* encode without 0 byte */ |
| capsenc = g_base64_encode ((guchar *) capsstr, capslen); |
| GST_DEBUG_OBJECT (payload, "caps=%s, caps(base64)=%s", capsstr, capsenc); |
| g_free (capsstr); |
| |
| /* Send the new caps */ |
| rtpgstpay->current_CV = rtpgstpay->next_CV; |
| rtpgstpay->next_CV = (rtpgstpay->next_CV + 1) & 0x7; |
| gst_rtp_gst_pay_send_caps (rtpgstpay, rtpgstpay->current_CV, caps); |
| |
| /* make caps for SDP */ |
| capsver = g_strdup_printf ("%d", rtpgstpay->current_CV); |
| res = |
| gst_rtp_base_payload_set_outcaps (payload, "caps", G_TYPE_STRING, capsenc, |
| "capsversion", G_TYPE_STRING, capsver, NULL); |
| g_free (capsenc); |
| g_free (capsver); |
| |
| return res; |
| } |
| |
| static void |
| gst_rtp_gst_pay_send_event (GstRtpGSTPay * rtpgstpay, guint etype, |
| GstEvent * event) |
| { |
| const GstStructure *s; |
| gchar *estr; |
| guint elen; |
| GstBuffer *outbuf; |
| |
| /* Create the standalone caps packet if an inlined caps was pending */ |
| gst_rtp_gst_pay_create_from_adapter (rtpgstpay, GST_CLOCK_TIME_NONE); |
| |
| s = gst_event_get_structure (event); |
| |
| estr = gst_structure_to_string (s); |
| elen = strlen (estr); |
| /* for 0 byte */ |
| elen++; |
| outbuf = make_data_buffer (rtpgstpay, estr, elen); |
| GST_DEBUG_OBJECT (rtpgstpay, "sending event=%s", estr); |
| g_free (estr); |
| |
| rtpgstpay->etype = etype; |
| gst_adapter_push (rtpgstpay->adapter, outbuf); |
| /* Create the event packet now to avoid conflict with data/caps packets */ |
| gst_rtp_gst_pay_create_from_adapter (rtpgstpay, GST_CLOCK_TIME_NONE); |
| } |
| |
| static gboolean |
| gst_rtp_gst_pay_sink_event (GstRTPBasePayload * payload, GstEvent * event) |
| { |
| gboolean ret; |
| GstRtpGSTPay *rtpgstpay; |
| guint etype = 0; |
| |
| rtpgstpay = GST_RTP_GST_PAY (payload); |
| |
| ret = |
| GST_RTP_BASE_PAYLOAD_CLASS (parent_class)->sink_event (payload, |
| gst_event_ref (event)); |
| |
| switch (GST_EVENT_TYPE (event)) { |
| case GST_EVENT_FLUSH_STOP: |
| gst_rtp_gst_pay_reset (rtpgstpay, FALSE); |
| break; |
| case GST_EVENT_TAG:{ |
| GstTagList *tags; |
| |
| gst_event_parse_tag (event, &tags); |
| |
| if (gst_tag_list_get_scope (tags) == GST_TAG_SCOPE_STREAM) { |
| GstTagList *old; |
| |
| GST_DEBUG_OBJECT (rtpgstpay, "storing stream tags %" GST_PTR_FORMAT, |
| tags); |
| if ((old = rtpgstpay->taglist)) |
| gst_tag_list_unref (old); |
| rtpgstpay->taglist = gst_tag_list_ref (tags); |
| } |
| etype = 1; |
| break; |
| } |
| case GST_EVENT_CUSTOM_DOWNSTREAM: |
| etype = 2; |
| break; |
| case GST_EVENT_CUSTOM_BOTH: |
| etype = 3; |
| break; |
| case GST_EVENT_STREAM_START:{ |
| const gchar *stream_id = NULL; |
| |
| if (rtpgstpay->taglist) |
| gst_tag_list_unref (rtpgstpay->taglist); |
| rtpgstpay->taglist = NULL; |
| |
| gst_event_parse_stream_start (event, &stream_id); |
| if (stream_id) { |
| g_free (rtpgstpay->stream_id); |
| rtpgstpay->stream_id = g_strdup (stream_id); |
| } |
| etype = 4; |
| break; |
| } |
| default: |
| GST_LOG_OBJECT (rtpgstpay, "no event for %s", |
| GST_EVENT_TYPE_NAME (event)); |
| break; |
| } |
| if (etype) { |
| GST_DEBUG_OBJECT (rtpgstpay, "make event type %d for %s", |
| etype, GST_EVENT_TYPE_NAME (event)); |
| gst_rtp_gst_pay_send_event (rtpgstpay, etype, event); |
| /* Do not send stream-start right away since caps/new-segment were not yet |
| sent, so our data would be considered invalid */ |
| if (etype != 4) { |
| /* flush the adapter immediately */ |
| gst_rtp_gst_pay_flush (rtpgstpay, GST_CLOCK_TIME_NONE); |
| } |
| } |
| |
| gst_event_unref (event); |
| |
| return ret; |
| } |
| |
| static void |
| gst_rtp_gst_pay_send_config (GstRtpGSTPay * rtpgstpay, |
| GstClockTime running_time) |
| { |
| GstPad *pad = GST_RTP_BASE_PAYLOAD_SINKPAD (rtpgstpay); |
| GstCaps *caps = NULL; |
| GstEvent *tag = NULL; |
| GstEvent *stream_start = NULL; |
| |
| GST_DEBUG_OBJECT (rtpgstpay, "time to send config"); |
| /* Send tags */ |
| if (rtpgstpay->taglist && !gst_tag_list_is_empty (rtpgstpay->taglist)) |
| tag = gst_event_new_tag (gst_tag_list_ref (rtpgstpay->taglist)); |
| if (tag) { |
| /* Send start-stream to clear tags */ |
| if (rtpgstpay->stream_id) |
| stream_start = gst_event_new_stream_start (rtpgstpay->stream_id); |
| if (stream_start) { |
| gst_rtp_gst_pay_send_event (rtpgstpay, 4, stream_start); |
| gst_event_unref (stream_start); |
| } |
| gst_rtp_gst_pay_send_event (rtpgstpay, 1, tag); |
| gst_event_unref (tag); |
| } |
| /* send caps */ |
| caps = gst_pad_get_current_caps (pad); |
| if (caps) { |
| gst_rtp_gst_pay_send_caps (rtpgstpay, rtpgstpay->current_CV, caps); |
| gst_caps_unref (caps); |
| } |
| rtpgstpay->last_config = running_time; |
| } |
| |
| static GstFlowReturn |
| gst_rtp_gst_pay_handle_buffer (GstRTPBasePayload * basepayload, |
| GstBuffer * buffer) |
| { |
| GstFlowReturn ret; |
| GstRtpGSTPay *rtpgstpay; |
| GstClockTime timestamp, running_time; |
| |
| rtpgstpay = GST_RTP_GST_PAY (basepayload); |
| |
| timestamp = GST_BUFFER_PTS (buffer); |
| running_time = |
| gst_segment_to_running_time (&basepayload->segment, GST_FORMAT_TIME, |
| timestamp); |
| |
| /* check if we need to send the caps and taglist now */ |
| if (rtpgstpay->config_interval > 0) { |
| GST_DEBUG_OBJECT (rtpgstpay, |
| "running time %" GST_TIME_FORMAT ", last config %" GST_TIME_FORMAT, |
| GST_TIME_ARGS (running_time), GST_TIME_ARGS (rtpgstpay->last_config)); |
| |
| if (running_time != GST_CLOCK_TIME_NONE && |
| rtpgstpay->last_config != GST_CLOCK_TIME_NONE) { |
| guint64 diff; |
| |
| /* calculate diff between last SPS/PPS in milliseconds */ |
| if (running_time > rtpgstpay->last_config) |
| diff = running_time - rtpgstpay->last_config; |
| else |
| diff = 0; |
| |
| GST_DEBUG_OBJECT (rtpgstpay, |
| "interval since last config %" GST_TIME_FORMAT, GST_TIME_ARGS (diff)); |
| |
| /* bigger than interval, queue SPS/PPS */ |
| if (GST_TIME_AS_SECONDS (diff) >= rtpgstpay->config_interval) |
| gst_rtp_gst_pay_send_config (rtpgstpay, running_time); |
| } else { |
| gst_rtp_gst_pay_send_config (rtpgstpay, running_time); |
| } |
| } |
| |
| /* caps always from SDP for now */ |
| if (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DELTA_UNIT)) |
| rtpgstpay->flags |= (1 << 3); |
| |
| gst_adapter_push (rtpgstpay->adapter, buffer); |
| ret = gst_rtp_gst_pay_flush (rtpgstpay, timestamp); |
| |
| return ret; |
| } |
| |
| gboolean |
| gst_rtp_gst_pay_plugin_init (GstPlugin * plugin) |
| { |
| return gst_element_register (plugin, "rtpgstpay", |
| GST_RANK_NONE, GST_TYPE_RTP_GST_PAY); |
| } |