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rtph263pdepay: Don't try to push empty frame

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If the result of depayloading is an empty frame, just drop it. This is
likely the result of a buggy payloader.
This commit is contained in:
Stian Selnes 2016-05-06 13:33:22 +02:00 committed by Olivier Crête
parent c7579d31a6
commit 5f3b570d53
2 changed files with 40 additions and 0 deletions
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8
gst/rtp/gstrtph263pdepay.c
View file

@ -321,6 +321,9 @@ gst_rtp_h263p_depay_process (GstRTPBaseDepayload * depayload,
len = avail + payload_len;
padlen = (len % 4) + 4;
if (avail == 0)
goto empty_frame;
outbuf = gst_adapter_take_buffer (rtph263pdepay->adapter, avail);
if (padlen) {
padbuf = gst_buffer_new_and_alloc (padlen);
@ -355,6 +358,11 @@ waiting_start:
GST_DEBUG_OBJECT (rtph263pdepay, "waiting for picture start");
return NULL;
}
empty_frame:
{
GST_WARNING_OBJECT (rtph263pdepay, "Depayloaded frame is empty, dropping");
return NULL;
}
}
static GstStateChangeReturn

32
tests/check/elements/rtph263.c
View file

@ -27,6 +27,10 @@
"application/x-rtp,media=video,encoding-name=H263,clock-rate=90000," \
"payload=" G_STRINGIFY(p)
#define H263P_RTP_CAPS_STR(p) \
"application/x-rtp,media=video,encoding-name=H263-1998,clock-rate=90000," \
"payload="G_STRINGIFY(p)
static gboolean
have_element (const gchar * element_name)
{
@ -242,6 +246,33 @@ GST_START_TEST (test_h263pdepay_fragmented_memory_non_writable_buffer_split_fram
}
GST_END_TEST;
GST_START_TEST (test_h263pdepay_dont_push_empty_frame)
{
GstHarness *h = gst_harness_new ("rtph263pdepay");
/* Packet that only contains header information and an extra picture header
* (PLEN > 0). Partly handcrafted packet. Originally this packet did not
* have P=1 (hence it was not start of a picture). With both P=1 and M=1 we
* only need one packet to reproduce the issue where trying to push an empty
* frame when PLEN is set */
guint8 packet[] = {
0x80, 0xe8, 0xbc, 0xaa, 0x14, 0x12, 0x16, 0x5c, 0xb8, 0x4e, 0x39, 0x04,
0x25, 0x00, 0x54, 0x39, 0xd0, 0x12, 0x06, 0x9e, 0xb5, 0x0a, 0xf5, 0xe8,
0x32, 0xeb, 0xd0, 0x6b, 0xd6, 0xa2, 0xfa, 0xd4, 0x3d, 0xd7, 0xa0, 0x2b,
0x24, 0x97, 0xc3, 0xbf, 0xc0, 0xbb, 0xd7, 0xa0,
};
gst_harness_set_src_caps_str (h, H263P_RTP_CAPS_STR (100));
fail_unless_equals_int (GST_FLOW_OK, gst_harness_push (h,
create_rtp_buffer (packet, sizeof (packet), 0, 0)));
fail_unless_equals_int (gst_harness_buffers_received (h), 0);
gst_harness_teardown (h);
}
GST_END_TEST;
static Suite *
rtph263_suite (void)
{
@ -259,6 +290,7 @@ rtph263_suite (void)
suite_add_tcase (s, (tc_chain = tcase_create ("h263pdepay")));
tcase_add_test (tc_chain, test_h263pdepay_fragmented_memory_non_writable_buffer);
tcase_add_test (tc_chain, test_h263pdepay_fragmented_memory_non_writable_buffer_split_frame);
tcase_add_test (tc_chain, test_h263pdepay_dont_push_empty_frame);
return s;
}