static GstBuffer *
create_rtp_buffer (guint32 ssrc, guint8 payload_type, guint16 seqnum)
{
GstRTPBuffer rtpbuf = GST_RTP_BUFFER_INIT;
guint payload_size = 29;
guint64 timestamp = gst_util_uint64_scale_int (seqnum, 90000, 30);
GstBuffer *buf = gst_rtp_buffer_new_allocate (payload_size, 0, 0);
gst_rtp_buffer_map (buf, GST_MAP_WRITE, &rtpbuf);
gst_rtp_buffer_set_ssrc (&rtpbuf, ssrc);
gst_rtp_buffer_set_payload_type (&rtpbuf, payload_type);
gst_rtp_buffer_set_seq (&rtpbuf, seqnum);
gst_rtp_buffer_set_timestamp (&rtpbuf, (guint32) timestamp);
memset (gst_rtp_buffer_get_payload (&rtpbuf), 0x29, payload_size);
gst_rtp_buffer_unmap (&rtpbuf);
return buf;
}
static void
gst_rtp_dtmf_prepare_rtp_headers (GstRTPDTMFSrc * dtmfsrc, GstBuffer * buf)
{
gst_rtp_buffer_set_ssrc (buf, dtmfsrc->current_ssrc);
gst_rtp_buffer_set_payload_type (buf, dtmfsrc->pt);
/* Only the very first packet gets a marker */
if (dtmfsrc->first_packet) {
gst_rtp_buffer_set_marker (buf, TRUE);
} else if (dtmfsrc->last_packet) {
dtmfsrc->payload->e = 1;
}
dtmfsrc->seqnum++;
gst_rtp_buffer_set_seq (buf, dtmfsrc->seqnum);
/* timestamp of RTP header */
gst_rtp_buffer_set_timestamp (buf, dtmfsrc->rtp_timestamp);
}
static void
send_rtp_packet (GstPad * src, guint timestamp, gboolean marker, gboolean end,
guint number, guint volume, guint duration)
{
GstBuffer *buf;
GstRTPBuffer rtpbuf = GST_RTP_BUFFER_INIT;
gchar *payload;
static guint seqnum = 1;
buf = gst_rtp_buffer_new_allocate (4, 0, 0);
fail_unless (gst_rtp_buffer_map (buf, GST_MAP_READWRITE, &rtpbuf));
gst_rtp_buffer_set_seq (&rtpbuf, seqnum++);
gst_rtp_buffer_set_timestamp (&rtpbuf, timestamp);
gst_rtp_buffer_set_marker (&rtpbuf, marker);
payload = gst_rtp_buffer_get_payload (&rtpbuf);
payload[0] = number;
payload[1] = volume | (end ? END_BIT : 0);
GST_WRITE_UINT16_BE (payload + 2, duration);
gst_rtp_buffer_unmap (&rtpbuf);
fail_unless (gst_pad_push (src, buf) == GST_FLOW_OK);
}
static void
lock_check_cb (GstPad * pad, int i)
{
GstBuffer *inbuf;
if (i % 2) {
fail_unless (buffers == NULL);
} else {
GstRTPBuffer rtpbuffer = GST_RTP_BUFFER_INIT;
fail_unless (buffers && g_list_length (buffers) == 1);
gst_rtp_buffer_map (buffers->data, GST_MAP_READ, &rtpbuffer);
fail_unless_equals_int (66, gst_rtp_buffer_get_ssrc (&rtpbuffer));
fail_unless_equals_int64 (200 - 57 + 1000 + i,
gst_rtp_buffer_get_timestamp (&rtpbuffer));
fail_unless_equals_int (100 + 1 + i, gst_rtp_buffer_get_seq (&rtpbuffer));
gst_rtp_buffer_unmap (&rtpbuffer);
inbuf = gst_rtp_buffer_new_allocate (10, 0, 0);
GST_BUFFER_PTS (inbuf) = i * 1000 + 500;
GST_BUFFER_DURATION (inbuf) = 1000;
gst_rtp_buffer_map (inbuf, GST_MAP_WRITE, &rtpbuffer);
gst_rtp_buffer_set_version (&rtpbuffer, 2);
gst_rtp_buffer_set_payload_type (&rtpbuffer, 98);
gst_rtp_buffer_set_ssrc (&rtpbuffer, 44);
gst_rtp_buffer_set_timestamp (&rtpbuffer, 200 + i);
gst_rtp_buffer_set_seq (&rtpbuffer, 2000 + i);
gst_rtp_buffer_unmap (&rtpbuffer);
fail_unless (gst_pad_push (pad, inbuf) == GST_FLOW_OK);
g_list_foreach (buffers, (GFunc) gst_buffer_unref, NULL);
g_list_free (buffers);
buffers = NULL;
}
}
static GstFlowReturn
gst_rtp_ulpfec_dec_chain (GstPad * pad, GstObject * parent, GstBuffer * buf)
{
GstRtpUlpFecDec *self = GST_RTP_ULPFEC_DEC (parent);
if (G_LIKELY (GST_FLOW_OK == self->chain_return_val)) {
GstRTPBuffer rtp = GST_RTP_BUFFER_INIT;
buf = gst_buffer_make_writable (buf);
if (G_UNLIKELY (self->unset_discont_flag)) {
self->unset_discont_flag = FALSE;
GST_BUFFER_FLAG_UNSET (buf, GST_BUFFER_FLAG_DISCONT);
}
gst_rtp_buffer_map (buf, GST_MAP_WRITE, &rtp);
gst_rtp_buffer_set_seq (&rtp, self->next_seqnum++);
gst_rtp_buffer_unmap (&rtp);
return gst_pad_push (self->srcpad, buf);
}
gst_buffer_unref (buf);
return self->chain_return_val;
}
static GstFlowReturn
gst_rtp_asf_pay_handle_packet (GstRtpAsfPay * rtpasfpay, GstBuffer * buffer)
{
GstRTPBasePayload *rtppay;
GstAsfPacketInfo *packetinfo;
guint8 flags;
guint8 *data;
guint32 packet_util_size;
guint32 packet_offset;
guint32 size_left;
GstFlowReturn ret = GST_FLOW_OK;
rtppay = GST_RTP_BASE_PAYLOAD (rtpasfpay);
packetinfo = &rtpasfpay->packetinfo;
if (!gst_asf_parse_packet (buffer, packetinfo, TRUE,
rtpasfpay->asfinfo.packet_size)) {
GST_ERROR_OBJECT (rtpasfpay, "Error while parsing asf packet");
gst_buffer_unref (buffer);
return GST_FLOW_ERROR;
}
if (packetinfo->packet_size == 0)
packetinfo->packet_size = rtpasfpay->asfinfo.packet_size;
GST_LOG_OBJECT (rtpasfpay, "Packet size: %" G_GUINT32_FORMAT
", padding: %" G_GUINT32_FORMAT, packetinfo->packet_size,
packetinfo->padding);
/* update padding field to 0 */
if (packetinfo->padding > 0) {
GstAsfPacketInfo info;
/* find padding field offset */
guint offset = packetinfo->err_cor_len + 2 +
gst_asf_get_var_size_field_len (packetinfo->packet_field_type) +
gst_asf_get_var_size_field_len (packetinfo->seq_field_type);
buffer = gst_buffer_make_writable (buffer);
switch (packetinfo->padd_field_type) {
case ASF_FIELD_TYPE_DWORD:
gst_buffer_memset (buffer, offset, 0, 4);
break;
case ASF_FIELD_TYPE_WORD:
gst_buffer_memset (buffer, offset, 0, 2);
break;
case ASF_FIELD_TYPE_BYTE:
gst_buffer_memset (buffer, offset, 0, 1);
break;
case ASF_FIELD_TYPE_NONE:
default:
break;
}
gst_asf_parse_packet (buffer, &info, FALSE, 0);
}
if (packetinfo->padding != 0)
packet_util_size = rtpasfpay->asfinfo.packet_size - packetinfo->padding;
else
packet_util_size = packetinfo->packet_size;
packet_offset = 0;
while (packet_util_size > 0) {
/* Even if we don't fill completely an output buffer we
* push it when we add an fragment. Because it seems that
* it is not possible to determine where a asf packet
* fragment ends inside a rtp packet payload.
* This flag tells us to push the packet.
*/
gboolean force_push = FALSE;
GstRTPBuffer rtp = GST_RTP_BUFFER_INIT;
/* we have no output buffer pending, create one */
if (rtpasfpay->current == NULL) {
GST_LOG_OBJECT (rtpasfpay, "Creating new output buffer");
rtpasfpay->current =
gst_rtp_buffer_new_allocate_len (GST_RTP_BASE_PAYLOAD_MTU (rtpasfpay),
0, 0);
rtpasfpay->cur_off = 0;
rtpasfpay->has_ts = FALSE;
rtpasfpay->marker = FALSE;
}
gst_rtp_buffer_map (rtpasfpay->current, GST_MAP_READWRITE, &rtp);
data = gst_rtp_buffer_get_payload (&rtp);
data += rtpasfpay->cur_off;
size_left = gst_rtp_buffer_get_payload_len (&rtp) - rtpasfpay->cur_off;
GST_DEBUG_OBJECT (rtpasfpay, "Input buffer bytes consumed: %"
G_GUINT32_FORMAT "/%" G_GSIZE_FORMAT, packet_offset,
gst_buffer_get_size (buffer));
GST_DEBUG_OBJECT (rtpasfpay, "Output rtpbuffer status");
GST_DEBUG_OBJECT (rtpasfpay, "Current offset: %" G_GUINT32_FORMAT,
rtpasfpay->cur_off);
GST_DEBUG_OBJECT (rtpasfpay, "Size left: %" G_GUINT32_FORMAT, size_left);
GST_DEBUG_OBJECT (rtpasfpay, "Has ts: %s",
rtpasfpay->has_ts ? "yes" : "no");
if (rtpasfpay->has_ts) {
GST_DEBUG_OBJECT (rtpasfpay, "Ts: %" G_GUINT32_FORMAT, rtpasfpay->ts);
}
flags = 0;
if (packetinfo->has_keyframe) {
flags = flags | 0x80;
}
flags = flags | 0x20; /* Relative timestamp is present */
if (!rtpasfpay->has_ts) {
/* this is the first asf packet, its send time is the
* rtp packet timestamp */
rtpasfpay->has_ts = TRUE;
rtpasfpay->ts = packetinfo->send_time;
}
if (size_left >= packet_util_size + 8) {
/* enough space for the rest of the packet */
if (packet_offset == 0) {
flags = flags | 0x40;
GST_WRITE_UINT24_BE (data + 1, packet_util_size);
} else {
GST_WRITE_UINT24_BE (data + 1, packet_offset);
force_push = TRUE;
}
data[0] = flags;
GST_WRITE_UINT32_BE (data + 4,
(gint32) (packetinfo->send_time) - (gint32) rtpasfpay->ts);
gst_buffer_extract (buffer, packet_offset, data + 8, packet_util_size);
/* updating status variables */
rtpasfpay->cur_off += 8 + packet_util_size;
size_left -= packet_util_size + 8;
packet_offset += packet_util_size;
packet_util_size = 0;
rtpasfpay->marker = TRUE;
} else {
/* fragment packet */
data[0] = flags;
GST_WRITE_UINT24_BE (data + 1, packet_offset);
GST_WRITE_UINT32_BE (data + 4,
(gint32) (packetinfo->send_time) - (gint32) rtpasfpay->ts);
gst_buffer_extract (buffer, packet_offset, data + 8, size_left - 8);
/* updating status variables */
rtpasfpay->cur_off += size_left;
packet_offset += size_left - 8;
packet_util_size -= size_left - 8;
size_left = 0;
force_push = TRUE;
}
/* there is not enough room for any more buffers */
if (force_push || size_left <= 8) {
gst_rtp_buffer_set_ssrc (&rtp, rtppay->current_ssrc);
gst_rtp_buffer_set_marker (&rtp, rtpasfpay->marker);
gst_rtp_buffer_set_payload_type (&rtp, GST_RTP_BASE_PAYLOAD_PT (rtppay));
gst_rtp_buffer_set_seq (&rtp, rtppay->seqnum + 1);
gst_rtp_buffer_set_timestamp (&rtp, packetinfo->send_time);
gst_rtp_buffer_unmap (&rtp);
/* trim remaining bytes not used */
if (size_left != 0) {
gst_buffer_set_size (rtpasfpay->current,
gst_buffer_get_size (rtpasfpay->current) - size_left);
}
GST_BUFFER_TIMESTAMP (rtpasfpay->current) = GST_BUFFER_TIMESTAMP (buffer);
rtppay->seqnum++;
rtppay->timestamp = packetinfo->send_time;
GST_DEBUG_OBJECT (rtpasfpay, "Pushing rtp buffer");
ret = gst_rtp_base_payload_push (rtppay, rtpasfpay->current);
rtpasfpay->current = NULL;
if (ret != GST_FLOW_OK) {
gst_buffer_unref (buffer);
return ret;
}
}
}
gst_buffer_unref (buffer);
return ret;
}
static void
test_basic (const gchar * elem_name, int count, check_cb cb)
{
GstElement *rtpmux = NULL;
GstPad *reqpad1 = NULL;
GstPad *reqpad2 = NULL;
GstPad *src1 = NULL;
GstPad *src2 = NULL;
GstPad *sink = NULL;
GstBuffer *inbuf = NULL;
GstCaps *src1caps = NULL;
GstCaps *src2caps = NULL;
GstCaps *sinkcaps = NULL;
GstCaps *caps;
int i;
rtpmux = gst_check_setup_element (elem_name);
reqpad1 = gst_element_get_request_pad (rtpmux, "sink_1");
fail_unless (reqpad1 != NULL);
reqpad2 = gst_element_get_request_pad (rtpmux, "sink_2");
fail_unless (reqpad2 != NULL);
sink = gst_check_setup_sink_pad_by_name (rtpmux, &sinktemplate, "src");
src1 = gst_pad_new_from_static_template (&srctemplate, "src");
src2 = gst_pad_new_from_static_template (&srctemplate, "src");
fail_unless (gst_pad_link (src1, reqpad1) == GST_PAD_LINK_OK);
fail_unless (gst_pad_link (src2, reqpad2) == GST_PAD_LINK_OK);
gst_pad_set_getcaps_function (src1, getcaps_func);
gst_pad_set_getcaps_function (src2, getcaps_func);
gst_pad_set_getcaps_function (sink, getcaps_func);
gst_pad_set_setcaps_function (sink, setcaps_func);
g_object_set_data (G_OBJECT (src1), "caps", &src1caps);
g_object_set_data (G_OBJECT (src2), "caps", &src2caps);
g_object_set_data (G_OBJECT (sink), "caps", &sinkcaps);
src1caps = gst_caps_new_simple ("application/x-rtp",
"clock-rate", G_TYPE_INT, 1, "ssrc", G_TYPE_UINT, 11, NULL);
src2caps = gst_caps_new_simple ("application/x-rtp",
"clock-rate", G_TYPE_INT, 2, "ssrc", G_TYPE_UINT, 12, NULL);
sinkcaps = gst_caps_new_simple ("application/x-rtp",
"clock-rate", G_TYPE_INT, 3, "ssrc", G_TYPE_UINT, 13, NULL);
caps = gst_pad_peer_get_caps (src1);
fail_unless (gst_caps_is_empty (caps));
gst_caps_unref (caps);
gst_caps_set_simple (src2caps, "clock-rate", G_TYPE_INT, 3, NULL);
caps = gst_pad_peer_get_caps (src1);
fail_unless (gst_caps_is_equal (caps, sinkcaps));
gst_caps_unref (caps);
g_object_set (rtpmux, "seqnum-offset", 100, "timestamp-offset", 1000,
"ssrc", 55, NULL);
fail_unless (gst_element_set_state (rtpmux,
GST_STATE_PLAYING) == GST_STATE_CHANGE_SUCCESS);
gst_pad_set_active (sink, TRUE);
gst_pad_set_active (src1, TRUE);
gst_pad_set_active (src2, TRUE);
gst_caps_set_simple (sinkcaps,
"payload", G_TYPE_INT, 98, "seqnum-base", G_TYPE_UINT, 100,
"clock-base", G_TYPE_UINT, 1000, "ssrc", G_TYPE_UINT, 66, NULL);
caps = gst_caps_new_simple ("application/x-rtp",
"payload", G_TYPE_INT, 98, "clock-rate", G_TYPE_INT, 3,
"seqnum-base", G_TYPE_UINT, 56, "clock-base", G_TYPE_UINT, 57,
"ssrc", G_TYPE_UINT, 66, NULL);
fail_unless (gst_pad_set_caps (src1, caps));
for (i = 0; i < count; i++) {
inbuf = gst_rtp_buffer_new_allocate (10, 0, 0);
gst_buffer_set_caps (inbuf, caps);
gst_rtp_buffer_set_version (inbuf, 2);
gst_rtp_buffer_set_payload_type (inbuf, 98);
gst_rtp_buffer_set_ssrc (inbuf, 44);
gst_rtp_buffer_set_timestamp (inbuf, 200 + i);
gst_rtp_buffer_set_seq (inbuf, 2000 + i);
fail_unless (gst_pad_push (src1, inbuf) == GST_FLOW_OK);
cb (src2, i);
g_list_foreach (buffers, (GFunc) gst_buffer_unref, NULL);
g_list_free (buffers);
buffers = NULL;
}
gst_pad_set_active (sink, FALSE);
gst_pad_set_active (src1, FALSE);
gst_pad_set_active (src2, FALSE);
fail_unless (gst_element_set_state (rtpmux,
GST_STATE_NULL) == GST_STATE_CHANGE_SUCCESS);
gst_check_teardown_pad_by_name (rtpmux, "src");
gst_object_unref (reqpad1);
gst_object_unref (reqpad2);
gst_check_teardown_pad_by_name (rtpmux, "sink_1");
gst_check_teardown_pad_by_name (rtpmux, "sink_2");
gst_element_release_request_pad (rtpmux, reqpad1);
gst_element_release_request_pad (rtpmux, reqpad2);
gst_caps_unref (caps);
gst_caps_replace (&src1caps, NULL);
gst_caps_replace (&src2caps, NULL);
gst_caps_replace (&sinkcaps, NULL);
gst_check_teardown_element (rtpmux);
}
static void
test_basic (const gchar * elem_name, const gchar * sink2, int count,
check_cb cb)
{
GstElement *rtpmux = NULL;
GstPad *reqpad1 = NULL;
GstPad *reqpad2 = NULL;
GstPad *src1 = NULL;
GstPad *src2 = NULL;
GstPad *sink = NULL;
GstBuffer *inbuf = NULL;
GstCaps *src1caps = NULL;
GstCaps *src2caps = NULL;
GstCaps *sinkcaps = NULL;
GstCaps *caps;
GstSegment segment;
int i;
rtpmux = gst_check_setup_element (elem_name);
reqpad1 = gst_element_get_request_pad (rtpmux, "sink_1");
fail_unless (reqpad1 != NULL);
reqpad2 = gst_element_get_request_pad (rtpmux, sink2);
fail_unless (reqpad2 != NULL);
sink = gst_check_setup_sink_pad_by_name (rtpmux, &sinktemplate, "src");
src1 = gst_pad_new_from_static_template (&srctemplate, "src");
src2 = gst_pad_new_from_static_template (&srctemplate, "src");
fail_unless (gst_pad_link (src1, reqpad1) == GST_PAD_LINK_OK);
fail_unless (gst_pad_link (src2, reqpad2) == GST_PAD_LINK_OK);
gst_pad_set_query_function (src1, query_func);
gst_pad_set_query_function (src2, query_func);
gst_pad_set_query_function (sink, query_func);
gst_pad_set_event_function (sink, event_func);
g_object_set_data (G_OBJECT (src1), "caps", &src1caps);
g_object_set_data (G_OBJECT (src2), "caps", &src2caps);
g_object_set_data (G_OBJECT (sink), "caps", &sinkcaps);
src1caps = gst_caps_new_simple ("application/x-rtp",
"clock-rate", G_TYPE_INT, 1, "ssrc", G_TYPE_UINT, 11, NULL);
src2caps = gst_caps_new_simple ("application/x-rtp",
"clock-rate", G_TYPE_INT, 2, "ssrc", G_TYPE_UINT, 12, NULL);
sinkcaps = gst_caps_new_simple ("application/x-rtp",
"clock-rate", G_TYPE_INT, 3, "ssrc", G_TYPE_UINT, 13, NULL);
caps = gst_pad_peer_query_caps (src1, NULL);
fail_unless (gst_caps_is_empty (caps));
gst_caps_unref (caps);
gst_caps_set_simple (src2caps, "clock-rate", G_TYPE_INT, 3, NULL);
caps = gst_pad_peer_query_caps (src1, NULL);
gst_caps_unref (caps);
g_object_set (rtpmux, "seqnum-offset", 100, "timestamp-offset", 1000,
"ssrc", 55, NULL);
fail_unless (gst_element_set_state (rtpmux,
GST_STATE_PLAYING) == GST_STATE_CHANGE_SUCCESS);
gst_pad_set_active (sink, TRUE);
gst_pad_set_active (src1, TRUE);
gst_pad_set_active (src2, TRUE);
fail_unless (gst_pad_push_event (src1,
gst_event_new_stream_start ("stream1")));
fail_unless (gst_pad_push_event (src2,
gst_event_new_stream_start ("stream2")));
gst_caps_set_simple (sinkcaps,
"payload", G_TYPE_INT, 98, "seqnum-offset", G_TYPE_UINT, 100,
"timestamp-offset", G_TYPE_UINT, 1000, "ssrc", G_TYPE_UINT, 66, NULL);
caps = gst_caps_new_simple ("application/x-rtp",
"payload", G_TYPE_INT, 98, "clock-rate", G_TYPE_INT, 3,
"seqnum-offset", G_TYPE_UINT, 56, "timestamp-offset", G_TYPE_UINT, 57,
"ssrc", G_TYPE_UINT, 66, NULL);
fail_unless (gst_pad_set_caps (src1, caps));
gst_caps_unref (caps);
caps = gst_pad_peer_query_caps (sink, NULL);
fail_if (gst_caps_is_empty (caps));
gst_segment_init (&segment, GST_FORMAT_TIME);
segment.start = 100000;
fail_unless (gst_pad_push_event (src1, gst_event_new_segment (&segment)));
segment.start = 0;
fail_unless (gst_pad_push_event (src2, gst_event_new_segment (&segment)));
for (i = 0; i < count; i++) {
GstRTPBuffer rtpbuffer = GST_RTP_BUFFER_INIT;
inbuf = gst_rtp_buffer_new_allocate (10, 0, 0);
GST_BUFFER_PTS (inbuf) = i * 1000 + 100000;
GST_BUFFER_DURATION (inbuf) = 1000;
gst_rtp_buffer_map (inbuf, GST_MAP_WRITE, &rtpbuffer);
gst_rtp_buffer_set_version (&rtpbuffer, 2);
gst_rtp_buffer_set_payload_type (&rtpbuffer, 98);
gst_rtp_buffer_set_ssrc (&rtpbuffer, 44);
gst_rtp_buffer_set_timestamp (&rtpbuffer, 200 + i);
gst_rtp_buffer_set_seq (&rtpbuffer, 2000 + i);
gst_rtp_buffer_unmap (&rtpbuffer);
fail_unless (gst_pad_push (src1, inbuf) == GST_FLOW_OK);
if (buffers)
fail_unless (GST_BUFFER_PTS (buffers->data) == i * 1000, "%lld",
GST_BUFFER_PTS (buffers->data));
cb (src2, i);
g_list_foreach (buffers, (GFunc) gst_buffer_unref, NULL);
g_list_free (buffers);
buffers = NULL;
}
gst_pad_set_active (sink, FALSE);
gst_pad_set_active (src1, FALSE);
gst_pad_set_active (src2, FALSE);
fail_unless (gst_element_set_state (rtpmux,
GST_STATE_NULL) == GST_STATE_CHANGE_SUCCESS);
gst_check_teardown_pad_by_name (rtpmux, "src");
gst_object_unref (reqpad1);
gst_object_unref (reqpad2);
gst_check_teardown_pad_by_name (rtpmux, "sink_1");
gst_check_teardown_pad_by_name (rtpmux, sink2);
gst_element_release_request_pad (rtpmux, reqpad1);
gst_element_release_request_pad (rtpmux, reqpad2);
gst_caps_unref (caps);
gst_caps_replace (&src1caps, NULL);
gst_caps_replace (&src2caps, NULL);
gst_caps_replace (&sinkcaps, NULL);
gst_check_teardown_element (rtpmux);
}
/* Copy fixed header and extension. Replace current ssrc by ssrc1,
* remove OSN and replace current seq num by OSN.
* Copy memory to avoid to manually copy each rtp buffer field.
*/
static GstBuffer *
_gst_rtp_buffer_new_from_rtx (GstRTPBuffer * rtp, guint32 ssrc1,
guint16 orign_seqnum, guint8 origin_payload_type)
{
GstMemory *mem = NULL;
GstRTPBuffer new_rtp = GST_RTP_BUFFER_INIT;
GstBuffer *new_buffer = gst_buffer_new ();
GstMapInfo map;
guint payload_len = 0;
/* copy fixed header */
mem = gst_memory_copy (rtp->map[0].memory,
(guint8 *) rtp->data[0] - rtp->map[0].data, rtp->size[0]);
gst_buffer_append_memory (new_buffer, mem);
/* copy extension if any */
if (rtp->size[1]) {
mem = gst_memory_copy (rtp->map[1].memory,
(guint8 *) rtp->data[1] - rtp->map[1].data, rtp->size[1]);
gst_buffer_append_memory (new_buffer, mem);
}
/* copy payload and remove OSN */
payload_len = rtp->size[2] - 2;
mem = gst_allocator_alloc (NULL, payload_len, NULL);
gst_memory_map (mem, &map, GST_MAP_WRITE);
if (rtp->size[2])
memcpy (map.data, (guint8 *) rtp->data[2] + 2, payload_len);
gst_memory_unmap (mem, &map);
gst_buffer_append_memory (new_buffer, mem);
/* the sender always constructs rtx packets without padding,
* But the receiver can still receive rtx packets with padding.
* So just copy it.
*/
if (rtp->size[3]) {
guint pad_len = rtp->size[3];
mem = gst_allocator_alloc (NULL, pad_len, NULL);
gst_memory_map (mem, &map, GST_MAP_WRITE);
map.data[pad_len - 1] = pad_len;
gst_memory_unmap (mem, &map);
gst_buffer_append_memory (new_buffer, mem);
}
/* set ssrc and seq num */
gst_rtp_buffer_map (new_buffer, GST_MAP_WRITE, &new_rtp);
gst_rtp_buffer_set_ssrc (&new_rtp, ssrc1);
gst_rtp_buffer_set_seq (&new_rtp, orign_seqnum);
gst_rtp_buffer_set_payload_type (&new_rtp, origin_payload_type);
gst_rtp_buffer_unmap (&new_rtp);
gst_buffer_copy_into (new_buffer, rtp->buffer,
GST_BUFFER_COPY_FLAGS | GST_BUFFER_COPY_TIMESTAMPS, 0, -1);
GST_BUFFER_FLAG_SET (new_buffer, GST_RTP_BUFFER_FLAG_RETRANSMISSION);
return new_buffer;
}
static gboolean
gst_rtp_ulpfec_dec_handle_packet_loss (GstRtpUlpFecDec * self, guint16 seqnum,
GstClockTime timestamp, GstClockTime duration)
{
gint caps_pt = self->have_caps_pt ? self->caps_pt : -1;
gboolean ret = TRUE;
GstBufferList *buflist =
rtp_storage_get_packets_for_recovery (self->storage, self->fec_pt,
self->caps_ssrc, seqnum);
if (buflist) {
GstBuffer *recovered_buffer = NULL;
guint16 recovered_seq = 0;
guint8 recovered_pt = 0;
gst_rtp_ulpfec_dec_start (self, buflist, self->fec_pt, seqnum);
while (NULL != (recovered_buffer =
gst_rtp_ulpfec_dec_recover (self, self->caps_ssrc, caps_pt,
&recovered_pt, &recovered_seq))) {
if (seqnum == recovered_seq) {
GstBuffer *sent_buffer;
GstRTPBuffer rtp = GST_RTP_BUFFER_INIT;
recovered_buffer = gst_buffer_make_writable (recovered_buffer);
GST_BUFFER_PTS (recovered_buffer) = timestamp;
/* GST_BUFFER_DURATION (recovered_buffer) = duration;
* JB does not set the duration, so we will not too */
if (!self->lost_packet_from_storage)
rtp_storage_put_recovered_packet (self->storage,
recovered_buffer, recovered_pt, self->caps_ssrc, recovered_seq);
GST_DEBUG_OBJECT (self,
"Pushing recovered packet ssrc=0x%08x seq=%u %" GST_PTR_FORMAT,
self->caps_ssrc, seqnum, recovered_buffer);
sent_buffer = gst_buffer_copy_deep (recovered_buffer);
gst_rtp_buffer_map (sent_buffer, GST_MAP_WRITE, &rtp);
gst_rtp_buffer_set_seq (&rtp, self->next_seqnum++);
gst_rtp_buffer_unmap (&rtp);
ret = FALSE;
self->unset_discont_flag = TRUE;
self->chain_return_val = gst_pad_push (self->srcpad, sent_buffer);
break;
}
rtp_storage_put_recovered_packet (self->storage,
recovered_buffer, recovered_pt, self->caps_ssrc, recovered_seq);
}
gst_rtp_ulpfec_dec_stop (self);
gst_buffer_list_unref (buflist);
}
GST_DEBUG_OBJECT (self, "Packet lost ssrc=0x%08x seq=%u", self->caps_ssrc,
seqnum);
return ret;
}
/**
* gst_basertppayload_push:
* @payload: a #GstBaseRTPPayload
* @buffer: a #GstBuffer
*
* Push @buffer to the peer element of the payloader. The SSRC, payload type,
* seqnum and timestamp of the RTP buffer will be updated first.
*
* This function takes ownership of @buffer.
*
* Returns: a #GstFlowReturn.
*/
GstFlowReturn
gst_basertppayload_push (GstBaseRTPPayload * payload, GstBuffer * buffer)
{
GstFlowReturn res;
GstClockTime timestamp;
guint32 rtptime;
GstBaseRTPPayloadPrivate *priv;
if (payload->clock_rate == 0)
goto no_rate;
priv = payload->priv;
gst_rtp_buffer_set_ssrc (buffer, payload->current_ssrc);
gst_rtp_buffer_set_payload_type (buffer, payload->pt);
/* update first, so that the property is set to the last
* seqnum pushed */
payload->seqnum = priv->next_seqnum;
gst_rtp_buffer_set_seq (buffer, payload->seqnum);
/* can wrap around, which is perfectly fine */
priv->next_seqnum++;
/* add our random offset to the timestamp */
rtptime = payload->ts_base;
timestamp = GST_BUFFER_TIMESTAMP (buffer);
if (GST_CLOCK_TIME_IS_VALID (timestamp)) {
gint64 rtime;
rtime = gst_segment_to_running_time (&payload->segment, GST_FORMAT_TIME,
timestamp);
rtime = gst_util_uint64_scale_int (rtime, payload->clock_rate, GST_SECOND);
/* add running_time in clock-rate units to the base timestamp */
rtptime += rtime;
} else {
/* no timestamp to convert, take previous timestamp */
rtptime = payload->timestamp;
}
gst_rtp_buffer_set_timestamp (buffer, rtptime);
payload->timestamp = rtptime;
/* set caps */
gst_buffer_set_caps (buffer, GST_PAD_CAPS (payload->srcpad));
GST_LOG_OBJECT (payload,
"Pushing packet size %d, seq=%d, rtptime=%u, timestamp %" GST_TIME_FORMAT,
GST_BUFFER_SIZE (buffer), payload->seqnum, rtptime,
GST_TIME_ARGS (timestamp));
res = gst_pad_push (payload->srcpad, buffer);
return res;
/* ERRORS */
no_rate:
{
GST_ELEMENT_ERROR (payload, STREAM, NOT_IMPLEMENTED, (NULL),
("subclass did not specify clock-rate"));
gst_buffer_unref (buffer);
return GST_FLOW_ERROR;
}
}
