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rtpvp8pay: Only mark first outgoing packet as non delta-unit

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Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4937>
This commit is contained in:
Peter Stensson 2023-06-27 10:40:47 +02:00 committed by GStreamer Marge Bot
parent fa4200a605
commit af43648bdf
2 changed files with 50 additions and 2 deletions
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14
subprojects/gst-plugins-good/gst/rtp/gstrtpvp8pay.c
View file

@ -611,7 +611,7 @@ gst_rtp_vp8_drop_vp8_meta (gpointer element, GstBuffer * buf)
static guint
gst_rtp_vp8_payload_next (GstRtpVP8Pay * self, GstBufferList * list,
guint offset, GstBuffer * buffer, gsize buffer_size, gsize max_payload_len,
GstCustomMeta * meta)
GstCustomMeta * meta, gboolean delta_unit)
{
guint partition;
GstBuffer *header;
@ -651,6 +651,9 @@ gst_rtp_vp8_payload_next (GstRtpVP8Pay * self, GstBufferList * list,
out = gst_buffer_append (header, sub);
if (delta_unit)
GST_BUFFER_FLAG_SET (out, GST_BUFFER_FLAG_DELTA_UNIT);
gst_buffer_list_insert (list, -1, out);
return available;
@ -666,9 +669,12 @@ gst_rtp_vp8_pay_handle_buffer (GstRTPBasePayload * payload, GstBuffer * buffer)
GstCustomMeta *meta;
gsize size, max_paylen;
guint offset, mtu, vp8_hdr_len;
gboolean delta_unit;
size = gst_buffer_get_size (buffer);
meta = gst_buffer_get_custom_meta (buffer, "GstVP8Meta");
delta_unit = GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DELTA_UNIT);
if (G_UNLIKELY (!gst_rtp_vp8_pay_parse_frame (self, buffer, size))) {
GST_ELEMENT_ERROR (self, STREAM, ENCODE, (NULL),
("Failed to parse VP8 frame"));
@ -699,7 +705,11 @@ gst_rtp_vp8_pay_handle_buffer (GstRTPBasePayload * payload, GstBuffer * buffer)
while (offset < size) {
offset +=
gst_rtp_vp8_payload_next (self, list, offset, buffer, size,
max_paylen, meta);
max_paylen, meta, delta_unit);
/* only the first outgoing packet should not have the DELTA_UNIT flag */
if (!delta_unit)
delta_unit = TRUE;
}
ret = gst_rtp_base_payload_push_list (payload, list);

38
subprojects/gst-plugins-good/tests/check/elements/rtpvp8.c
View file

@ -831,6 +831,43 @@ GST_START_TEST (test_depay_resend_gap_event)
GST_END_TEST;
GST_START_TEST (test_pay_delta_unit_flag)
{
guint8 vp8_bitstream_payload[] = {
0x30, 0x00, 0x00, 0x9d, 0x01, 0x2a, 0xb0, 0x00,
0x90, 0x00, 0x06, 0x47, 0x08, 0x85, 0x85, 0x88,
0x99, 0x84, 0x88, 0x21, 0x00
};
/* set mtu so that the buffer is split into multiple packets */
GstHarness *h = gst_harness_new_parse ("rtpvp8pay mtu=28");
GstFlowReturn ret;
GstBuffer *buffer;
gst_harness_set_src_caps_str (h, "video/x-vp8");
buffer = gst_buffer_new_wrapped_full (GST_MEMORY_FLAG_READONLY,
vp8_bitstream_payload, sizeof (vp8_bitstream_payload), 0,
sizeof (vp8_bitstream_payload), NULL, NULL);
ret = gst_harness_push (h, buffer);
fail_unless_equals_int (ret, GST_FLOW_OK);
/* the input buffer should be split into two buffers and pushed as a buffer
* list, only the first buffer of the first buffer list should be marked as a
* non-delta unit */
buffer = gst_harness_pull (h);
fail_unless (!GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DELTA_UNIT));
gst_buffer_unref (buffer);
buffer = gst_harness_pull (h);
fail_unless (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DELTA_UNIT));
gst_buffer_unref (buffer);
gst_harness_teardown (h);
}
GST_END_TEST;
static Suite *
rtpvp8_suite (void)
{
@ -849,6 +886,7 @@ rtpvp8_suite (void)
tcase_add_test (tc_chain, test_pay_continuous_picture_id_and_tl0picidx);
tcase_add_test (tc_chain, test_pay_tl0picidx_split_buffer);
tcase_add_test (tc_chain, test_pay_continuous_picture_id_on_flush);
tcase_add_test (tc_chain, test_pay_delta_unit_flag);
suite_add_tcase (s, (tc_chain = tcase_create ("vp8depay")));
tcase_add_loop_test (tc_chain, test_depay_stop_gap_events, 0,