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rtpopuspay: set MARKER flag

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Set MARKER flag on first buffer after DTX.

According to RFC 3551 section 4.1 the marker bit needs to be set on
"the first packet after a silence period during which packets have
not been transmitted contiguously".

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/merge_requests/967>
This commit is contained in:
Guillaume Desmottes 2021-04-02 18:41:28 +02:00
parent 41ba8c1b00
commit 5fa3325335
3 changed files with 46 additions and 4 deletions
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34
gst/rtp/gstrtpopuspay.c
View file

@ -131,6 +131,32 @@ gst_rtp_opus_pay_get_property (GObject * object,
}
}
static GstStateChangeReturn
gst_rtp_opus_pay_change_state (GstElement * element, GstStateChange transition)
{
GstRtpOPUSPay *self = GST_RTP_OPUS_PAY (element);
GstStateChangeReturn ret;
switch (transition) {
case GST_STATE_CHANGE_READY_TO_PAUSED:
self->marker = TRUE;
break;
default:
break;
}
ret =
GST_ELEMENT_CLASS (gst_rtp_opus_pay_parent_class)->change_state (element,
transition);
switch (transition) {
default:
break;
}
return ret;
}
static void
gst_rtp_opus_pay_class_init (GstRtpOPUSPayClass * klass)
{
@ -142,6 +168,8 @@ gst_rtp_opus_pay_class_init (GstRtpOPUSPayClass * klass)
element_class = GST_ELEMENT_CLASS (klass);
gobject_class = (GObjectClass *) klass;
element_class->change_state = gst_rtp_opus_pay_change_state;
gstbasertppayload_class->set_caps = gst_rtp_opus_pay_setcaps;
gstbasertppayload_class->get_caps = gst_rtp_opus_pay_getcaps;
gstbasertppayload_class->handle_buffer = gst_rtp_opus_pay_handle_buffer;
@ -305,6 +333,7 @@ gst_rtp_opus_pay_handle_buffer (GstRTPBasePayload * basepayload,
if (self->dtx && gst_buffer_get_size (buffer) <= 2) {
GST_LOG_OBJECT (self,
"discard empty buffer as DTX is enabled: %" GST_PTR_FORMAT, buffer);
self->marker = TRUE;
gst_buffer_unref (buffer);
return GST_FLOW_OK;
}
@ -323,6 +352,11 @@ gst_rtp_opus_pay_handle_buffer (GstRTPBasePayload * basepayload,
GST_BUFFER_DTS (outbuf) = dts;
GST_BUFFER_DURATION (outbuf) = duration;
if (self->marker) {
GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_MARKER);
self->marker = FALSE;
}
/* Push out */
return gst_rtp_base_payload_push (basepayload, outbuf);
}

3
gst/rtp/gstrtpopuspay.h
View file

@ -46,6 +46,9 @@ struct _GstRtpOPUSPay
GstRTPBasePayload payload;
gboolean dtx;
/* if the next produced buffer should have the MARKER flag */
gboolean marker;
};
struct _GstRtpOPUSPayClass

13
tests/check/elements/rtp-payloading.c
View file

@ -1672,7 +1672,7 @@ GST_START_TEST (rtp_vorbis_renegotiate)
GST_END_TEST;
static guint16
pull_rtp_buffer (GstHarness * h)
pull_rtp_buffer (GstHarness * h, gboolean has_marker)
{
gint16 seq;
GstBuffer *buf;
@ -1685,6 +1685,11 @@ pull_rtp_buffer (GstHarness * h)
seq = gst_rtp_buffer_get_seq (&rtp);
gst_rtp_buffer_unmap (&rtp);
if (has_marker)
fail_unless (GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_MARKER));
else
fail_if (GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_MARKER));
gst_buffer_unref (buf);
return seq;
}
@ -1715,7 +1720,7 @@ test_rtp_opus_dtx (gboolean dtx)
gst_buffer_new_wrapped (g_memdup (opus_frame, sizeof (opus_frame)),
sizeof (opus_frame));
fail_unless_equals_int (gst_harness_push (h, buf), GST_FLOW_OK);
seq = pull_rtp_buffer (h);
seq = pull_rtp_buffer (h, TRUE);
expected_seq = seq + 1;
/* push empty frame */
@ -1728,7 +1733,7 @@ test_rtp_opus_dtx (gboolean dtx)
buf = gst_harness_try_pull (h);
fail_if (buf);
} else {
seq = pull_rtp_buffer (h);
seq = pull_rtp_buffer (h, FALSE);
fail_unless_equals_int (seq, expected_seq);
expected_seq++;
}
@ -1738,7 +1743,7 @@ test_rtp_opus_dtx (gboolean dtx)
gst_buffer_new_wrapped (g_memdup (opus_frame, sizeof (opus_frame)),
sizeof (opus_frame));
fail_unless_equals_int (gst_harness_push (h, buf), GST_FLOW_OK);
seq = pull_rtp_buffer (h);
seq = pull_rtp_buffer (h, dtx);
fail_unless_equals_int (seq, expected_seq);
gst_harness_teardown (h);