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gstreamer/tests/check/elements/videoflip.c
Matthew Waters db15ec9286 videoflip: fix possible crash when setting the video-direction while running 
A classic case of not enough locking.

One interesting thing with this is the interaction between the
rotation value and caps negotiation.  i.e. the width/height of the caps
can be swapped depending on the video-direction property.  We can't lock
the entirety of the caps negotiation for obvious reasons so we need to
do something else.  This takes the approach of trying to use a single
rotation value throughout the entirety of the negotiation and then
subsequent output frame in a kind of latching sequence.

Fixes: https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/issues/792
Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/merge_requests/836>
2021-01-04 12:10:12 +00:00

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/* GStreamer
*
* unit test for videofilter elements
*
* Copyright (C) <2006> Mark Nauwelaerts <manauw@skynet.be>
*
* 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.
*/
#include <stdarg.h>
#include <gst/video/video.h>
#include <gst/check/gstcheck.h>
#include <gst/check/gstharness.h>
static GstBuffer *
create_test_video_buffer_rgba8 (GstVideoInfo * info)
{
guint8 *data;
guint i = 0, j, k;
gsize stride = GST_VIDEO_INFO_PLANE_STRIDE (info, i);
data = g_malloc0 (info->size);
for (j = 0; j < GST_VIDEO_INFO_COMP_HEIGHT (info, i); j++) {
for (k = 0; k < GST_VIDEO_INFO_COMP_WIDTH (info, i); k++) {
data[(j * stride + 4 * k) + 0] = j % 255;
data[(j * stride + 4 * k) + 1] = k % 255;
data[(j * stride + 4 * k) + 2] = (j + k) % 255;
data[(j * stride + 4 * k) + 3] = 255;
}
}
return gst_buffer_new_wrapped (data, info->size);
}
GST_START_TEST (test_passthrough)
{
GstHarness *flip = gst_harness_new ("videoflip");
GstVideoInfo in_info, out_info;
GstCaps *in_caps, *out_caps;
GstEvent *e;
GstBuffer *buf;
gst_video_info_set_format (&in_info, GST_VIDEO_FORMAT_RGBA, 4, 9);
in_caps = gst_video_info_to_caps (&in_info);
gst_harness_set_src_caps (flip, in_caps);
e = gst_harness_pull_event (flip);
fail_unless_equals_int (GST_EVENT_TYPE (e), GST_EVENT_STREAM_START);
gst_event_unref (e);
e = gst_harness_pull_event (flip);
fail_unless_equals_int (GST_EVENT_TYPE (e), GST_EVENT_CAPS);
gst_event_parse_caps (e, &out_caps);
fail_unless (gst_video_info_from_caps (&out_info, out_caps));
fail_unless_equals_int (GST_VIDEO_INFO_WIDTH (&in_info),
GST_VIDEO_INFO_WIDTH (&out_info));
fail_unless_equals_int (GST_VIDEO_INFO_HEIGHT (&in_info),
GST_VIDEO_INFO_HEIGHT (&out_info));
gst_event_unref (e);
e = gst_harness_pull_event (flip);
fail_unless_equals_int (GST_EVENT_TYPE (e), GST_EVENT_SEGMENT);
gst_event_unref (e);
buf = create_test_video_buffer_rgba8 (&in_info);
buf = gst_harness_push_and_pull (flip, buf);
fail_unless (buf != NULL);
gst_buffer_unref (buf);
gst_harness_teardown (flip);
}
GST_END_TEST;
GST_START_TEST (test_change_method)
{
GstHarness *flip = gst_harness_new ("videoflip");
GstVideoInfo in_info, out_info;
GstCaps *in_caps, *out_caps;
GstEvent *e;
GstBuffer *buf;
gst_video_info_set_format (&in_info, GST_VIDEO_FORMAT_RGBA, 4, 9);
in_caps = gst_video_info_to_caps (&in_info);
gst_harness_set_src_caps (flip, in_caps);
e = gst_harness_pull_event (flip);
fail_unless_equals_int (GST_EVENT_TYPE (e), GST_EVENT_STREAM_START);
gst_event_unref (e);
e = gst_harness_pull_event (flip);
fail_unless_equals_int (GST_EVENT_TYPE (e), GST_EVENT_CAPS);
gst_event_parse_caps (e, &out_caps);
fail_unless (gst_video_info_from_caps (&out_info, out_caps));
fail_unless_equals_int (GST_VIDEO_INFO_WIDTH (&in_info),
GST_VIDEO_INFO_WIDTH (&out_info));
fail_unless_equals_int (GST_VIDEO_INFO_HEIGHT (&in_info),
GST_VIDEO_INFO_HEIGHT (&out_info));
gst_event_unref (e);
e = gst_harness_pull_event (flip);
fail_unless_equals_int (GST_EVENT_TYPE (e), GST_EVENT_SEGMENT);
gst_event_unref (e);
buf = create_test_video_buffer_rgba8 (&in_info);
buf = gst_harness_push_and_pull (flip, buf);
fail_unless (buf != NULL);
gst_buffer_unref (buf);
g_object_set (flip->element, "video-direction", 1 /* 90r */ , NULL);
buf = create_test_video_buffer_rgba8 (&in_info);
fail_unless_equals_int (gst_harness_push (flip, buf), GST_FLOW_OK);
e = gst_harness_pull_event (flip);
fail_unless_equals_int (GST_EVENT_TYPE (e), GST_EVENT_CAPS);
gst_event_parse_caps (e, &out_caps);
fail_unless (gst_video_info_from_caps (&out_info, out_caps));
fail_unless_equals_int (GST_VIDEO_INFO_WIDTH (&in_info),
GST_VIDEO_INFO_HEIGHT (&out_info));
fail_unless_equals_int (GST_VIDEO_INFO_HEIGHT (&in_info),
GST_VIDEO_INFO_WIDTH (&out_info));
gst_event_unref (e);
buf = gst_harness_pull (flip);
fail_unless (buf != NULL);
gst_buffer_unref (buf);
gst_harness_teardown (flip);
}
GST_END_TEST;
GST_START_TEST (test_change_method_twice_same_caps_different_method)
{
GstHarness *flip = gst_harness_new ("videoflip");
GstVideoInfo in_info, out_info;
GstCaps *in_caps, *out_caps;
GstEvent *e;
GstBuffer *input, *output, *buf;
GstMapInfo in_map_info, out_map_info;
gst_video_info_set_format (&in_info, GST_VIDEO_FORMAT_RGBA, 4, 9);
in_caps = gst_video_info_to_caps (&in_info);
gst_harness_set_src_caps (flip, in_caps);
e = gst_harness_pull_event (flip);
fail_unless_equals_int (GST_EVENT_TYPE (e), GST_EVENT_STREAM_START);
gst_event_unref (e);
e = gst_harness_pull_event (flip);
fail_unless_equals_int (GST_EVENT_TYPE (e), GST_EVENT_CAPS);
gst_event_parse_caps (e, &out_caps);
fail_unless (gst_video_info_from_caps (&out_info, out_caps));
fail_unless_equals_int (GST_VIDEO_INFO_WIDTH (&in_info),
GST_VIDEO_INFO_WIDTH (&out_info));
fail_unless_equals_int (GST_VIDEO_INFO_HEIGHT (&in_info),
GST_VIDEO_INFO_HEIGHT (&out_info));
gst_event_unref (e);
e = gst_harness_pull_event (flip);
fail_unless_equals_int (GST_EVENT_TYPE (e), GST_EVENT_SEGMENT);
gst_event_unref (e);
buf = create_test_video_buffer_rgba8 (&in_info);
buf = gst_harness_push_and_pull (flip, buf);
fail_unless (buf != NULL);
gst_buffer_unref (buf);
g_object_set (flip->element, "video-direction", 1 /* 90r */ , NULL);
g_object_set (flip->element, "video-direction", 2 /* 180 */ , NULL);
input = create_test_video_buffer_rgba8 (&in_info);
fail_unless_equals_int (gst_harness_push (flip, gst_buffer_ref (input)),
GST_FLOW_OK);
/* caps will not change and basetransform won't send updated ones so we
* can't check for them */
output = gst_harness_pull (flip);
fail_unless (output != NULL);
fail_unless (gst_buffer_map (input, &in_map_info, GST_MAP_READ));
fail_unless (gst_buffer_map (output, &out_map_info, GST_MAP_READ));
{
gsize top_right = (GST_VIDEO_INFO_WIDTH (&in_info) - 1) * 4;
gsize bottom_left =
(GST_VIDEO_INFO_HEIGHT (&out_info) -
1) * GST_VIDEO_INFO_PLANE_STRIDE (&out_info, 0);
fail_unless_equals_int (in_map_info.data[top_right + 0],
out_map_info.data[bottom_left + 0]);
fail_unless_equals_int (in_map_info.data[top_right + 1],
out_map_info.data[bottom_left + 1]);
fail_unless_equals_int (in_map_info.data[top_right + 2],
out_map_info.data[bottom_left + 2]);
fail_unless_equals_int (in_map_info.data[top_right + 3],
out_map_info.data[bottom_left + 3]);
}
gst_buffer_unmap (input, &in_map_info);
gst_buffer_unmap (output, &out_map_info);
gst_buffer_unref (input);
gst_buffer_unref (output);
gst_harness_teardown (flip);
}
GST_END_TEST;
GST_START_TEST (test_stress_change_method)
{
GstHarness *flip = gst_harness_new ("videoflip");
GParamSpec *pspec =
g_object_class_find_property (G_OBJECT_GET_CLASS (flip->element),
"video-direction");
GstHarnessThread *thread_identity, *thread_90r;
GValue direction_identity = G_VALUE_INIT, direction_90r = G_VALUE_INIT;
GstVideoInfo in_info;
guint i = 0;
#define N_PUSHES 1000
gst_video_info_set_format (&in_info, GST_VIDEO_FORMAT_RGBA, 4, 9);
gst_harness_set_src_caps (flip, gst_video_info_to_caps (&in_info));
g_value_init (&direction_identity, pspec->value_type);
g_value_init (&direction_90r, pspec->value_type);
fail_unless (gst_value_deserialize_with_pspec (&direction_identity,
"identity", pspec));
fail_unless (gst_value_deserialize_with_pspec (&direction_90r, "90r", pspec));
thread_identity =
gst_harness_stress_property_start_full (flip, "video-direction",
&direction_identity, 210);
thread_90r =
gst_harness_stress_property_start_full (flip, "video-direction",
&direction_90r, 160);
while (i++ < N_PUSHES) {
GstBuffer *buf = create_test_video_buffer_rgba8 (&in_info);
buf = gst_harness_push_and_pull (flip, buf);
fail_unless (buf != NULL);
gst_buffer_unref (buf);
g_usleep (100);
}
gst_harness_stress_thread_stop (thread_identity);
gst_harness_stress_thread_stop (thread_90r);
g_value_unset (&direction_identity);
g_value_unset (&direction_90r);
gst_harness_teardown (flip);
}
GST_END_TEST;
static Suite *
videoflip_suite (void)
{
Suite *s = suite_create ("videoflip");
TCase *tc_chain = tcase_create ("general");
suite_add_tcase (s, tc_chain);
tcase_add_test (tc_chain, test_passthrough);
tcase_add_test (tc_chain, test_change_method);
tcase_add_test (tc_chain,
test_change_method_twice_same_caps_different_method);
tcase_add_test (tc_chain, test_stress_change_method);
return s;
}
GST_CHECK_MAIN (videoflip);
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