ccextractor: Add unit test

https://bugzilla.gnome.org/show_bug.cgi?id=797370

tests/check/Makefile.am

@@ -40,6 +40,12 @@ else
 check_assrender =
 endif
 
+if USE_PANGO
+check_ccextractor = elements/ccextractor
+else
+check_ccextractor =
+endif
+
 if USE_DASH
 check_dash = elements/dash_mpd
 check_dash_demux = elements/dash_demux
@@ -240,6 +246,7 @@ noinst_PROGRAMS = \
 check_PROGRAMS = \
 	generic/states \
 	$(check_assrender) \
+	$(check_ccextractor) \
 	$(check_dash) \
 	$(check_dtls) \
 	$(check_faac)  \
@@ -451,6 +458,9 @@ elements_camerabin_LDADD = \
         $(GST_BASE_LIBS) $(GST_LIBS) $(LDADD)
 elements_camerabin_SOURCES = elements/camerabin.c
 
+elements_ccextractor_CFLAGS = $(GST_PLUGINS_BASE_CFLAGS) $(GST_BASE_CFLAGS) $(AM_CFLAGS)
+elements_ccextractor_LDADD = $(GST_PLUGINS_BASE_LIBS) $(GST_VIDEO_LIBS) $(GST_BASE_LIBS) $(LDADD)
+
 elements_jifmux_CFLAGS = $(GST_PLUGINS_BASE_CFLAGS) $(EXIF_CFLAGS) $(AM_CFLAGS)
 elements_jifmux_LDADD = $(GST_PLUGINS_BASE_LIBS) -lgsttag-$(GST_API_VERSION) $(GST_CHECK_LIBS) $(EXIF_LIBS) $(LDADD)
 elements_jifmux_SOURCES = elements/jifmux.c

tests/check/elements/.gitignore

@@ -6,6 +6,7 @@ autoconvert
 autovideoconvert
 avwait
 camerabin
+ccextractor
 compositor
 curlfilesink
 curlftpsink

tests/check/elements/ccextractor.c

@@ -0,0 +1,342 @@
+/* GStreamer
+ *
+ * Copyright (C) 2018 Sebastian Dröge <sebastian@centricular.com>
+ *
+ * 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+#include <gst/gst.h>
+#include <gst/check/gstcheck.h>
+#include <gst/check/gstharness.h>
+#include <gst/video/video.h>
+
+#include <string.h>
+
+static GstStaticCaps foo_bar_caps = GST_STATIC_CAPS ("foo/bar");
+static GstStaticCaps cea708_cc_data_caps =
+GST_STATIC_CAPS ("closedcaption/x-cea-708,format=(string) cc_data");
+static GstStaticCaps cea708_cdp_caps =
+GST_STATIC_CAPS ("closedcaption/x-cea-708,format=(string) cdp");
+
+GST_START_TEST (no_captions)
+{
+  GstHarness *h;
+  GstBuffer *buf, *outbuf;
+  GstCaps *caps;
+
+  h = gst_harness_new ("ccextractor");
+
+  gst_harness_set_src_caps_str (h, "foo/bar");
+
+  buf = gst_buffer_new_and_alloc (128);
+  outbuf = gst_harness_push_and_pull (h, gst_buffer_ref (buf));
+
+  fail_unless (outbuf != NULL);
+  fail_unless (outbuf == buf);
+  fail_unless (gst_element_get_static_pad (h->element, "caption") == NULL);
+
+  caps = gst_pad_get_current_caps (h->sinkpad);
+  fail_unless (caps != NULL);
+  fail_unless (gst_caps_can_intersect (caps,
+          gst_static_caps_get (&foo_bar_caps)));
+  gst_caps_unref (caps);
+
+  gst_buffer_unref (buf);
+  gst_buffer_unref (outbuf);
+
+  gst_harness_teardown (h);
+}
+
+GST_END_TEST;
+
+static void
+on_caption_pad_added (GstElement * ccextractor, GstPad * pad, GstHarness * h)
+{
+  fail_unless (strcmp (GST_OBJECT_NAME (pad), "caption") == 0);
+  gst_harness_add_element_src_pad (h, pad);
+}
+
+GST_START_TEST (captions)
+{
+  GstHarness *h, *h2;
+  GstBuffer *buf, *outbuf;
+  const guint8 caption_data[] = { 0, 1, 2, 3, 4, 5, 6, 7 };
+  GstCaps *caps;
+
+  h = gst_harness_new ("ccextractor");
+  h2 = gst_harness_new_with_element (h->element, NULL, NULL);
+
+  g_signal_connect (h->element, "pad-added", G_CALLBACK (on_caption_pad_added),
+      h2);
+
+  gst_harness_set_src_caps_str (h, "foo/bar");
+
+  buf = gst_buffer_new_and_alloc (128);
+  gst_buffer_add_video_caption_meta (buf, GST_VIDEO_CAPTION_TYPE_CEA708_RAW,
+      caption_data, sizeof (caption_data));
+
+  outbuf = gst_harness_push_and_pull (h, gst_buffer_ref (buf));
+
+  fail_unless (outbuf != NULL);
+  fail_unless (outbuf == buf);
+  gst_buffer_unref (outbuf);
+  gst_buffer_unref (buf);
+
+  fail_unless (h2->sinkpad != NULL);
+  outbuf = gst_harness_pull (h2);
+  fail_unless (outbuf != NULL);
+  fail_unless (gst_buffer_memcmp (outbuf, 0, caption_data,
+          sizeof (caption_data)) == 0);
+  gst_buffer_unref (outbuf);
+
+  caps = gst_pad_get_current_caps (h->sinkpad);
+  fail_unless (caps != NULL);
+  fail_unless (gst_caps_can_intersect (caps,
+          gst_static_caps_get (&foo_bar_caps)));
+  gst_caps_unref (caps);
+
+  caps = gst_pad_get_current_caps (h2->sinkpad);
+  fail_unless (caps != NULL);
+  fail_unless (gst_caps_can_intersect (caps,
+          gst_static_caps_get (&cea708_cc_data_caps)));
+  gst_caps_unref (caps);
+
+  buf = gst_buffer_new_and_alloc (128);
+  gst_buffer_add_video_caption_meta (buf, GST_VIDEO_CAPTION_TYPE_CEA708_RAW,
+      caption_data, sizeof (caption_data));
+
+  outbuf = gst_harness_push_and_pull (h, gst_buffer_ref (buf));
+
+  fail_unless (outbuf != NULL);
+  fail_unless (outbuf == buf);
+  gst_buffer_unref (outbuf);
+  gst_buffer_unref (buf);
+
+  fail_unless (h2->sinkpad != NULL);
+  outbuf = gst_harness_pull (h2);
+  fail_unless (outbuf != NULL);
+  fail_unless (gst_buffer_memcmp (outbuf, 0, caption_data,
+          sizeof (caption_data)) == 0);
+  gst_buffer_unref (outbuf);
+
+  caps = gst_pad_get_current_caps (h->sinkpad);
+  fail_unless (caps != NULL);
+  fail_unless (gst_caps_can_intersect (caps,
+          gst_static_caps_get (&foo_bar_caps)));
+  gst_caps_unref (caps);
+
+  caps = gst_pad_get_current_caps (h2->sinkpad);
+  fail_unless (caps != NULL);
+  fail_unless (gst_caps_can_intersect (caps,
+          gst_static_caps_get (&cea708_cc_data_caps)));
+  gst_caps_unref (caps);
+
+  gst_harness_teardown (h);
+  gst_harness_teardown (h2);
+}
+
+GST_END_TEST;
+
+GST_START_TEST (no_captions_at_beginning_and_end)
+{
+  GstHarness *h, *h2;
+  GstBuffer *buf, *outbuf;
+  const guint8 caption_data[] = { 0, 1, 2, 3, 4, 5, 6, 7 };
+  GstCaps *caps;
+
+  h = gst_harness_new ("ccextractor");
+  h2 = gst_harness_new_with_element (h->element, NULL, NULL);
+
+  g_signal_connect (h->element, "pad-added", G_CALLBACK (on_caption_pad_added),
+      h2);
+
+  gst_harness_set_src_caps_str (h, "foo/bar");
+
+  buf = gst_buffer_new_and_alloc (128);
+
+  outbuf = gst_harness_push_and_pull (h, gst_buffer_ref (buf));
+
+  fail_unless (outbuf != NULL);
+  fail_unless (outbuf == buf);
+  gst_buffer_unref (outbuf);
+  gst_buffer_unref (buf);
+
+  buf = gst_buffer_new_and_alloc (128);
+  gst_buffer_add_video_caption_meta (buf, GST_VIDEO_CAPTION_TYPE_CEA708_RAW,
+      caption_data, sizeof (caption_data));
+
+  outbuf = gst_harness_push_and_pull (h, gst_buffer_ref (buf));
+
+  fail_unless (outbuf != NULL);
+  fail_unless (outbuf == buf);
+  gst_buffer_unref (outbuf);
+  gst_buffer_unref (buf);
+
+  caps = gst_pad_get_current_caps (h->sinkpad);
+  fail_unless (caps != NULL);
+  fail_unless (gst_caps_can_intersect (caps,
+          gst_static_caps_get (&foo_bar_caps)));
+  gst_caps_unref (caps);
+
+  fail_unless (h2->sinkpad != NULL);
+  outbuf = gst_harness_pull (h2);
+  fail_unless (outbuf != NULL);
+  fail_unless (gst_buffer_memcmp (outbuf, 0, caption_data,
+          sizeof (caption_data)) == 0);
+  gst_buffer_unref (outbuf);
+
+  caps = gst_pad_get_current_caps (h->sinkpad);
+  fail_unless (caps != NULL);
+  fail_unless (gst_caps_can_intersect (caps,
+          gst_static_caps_get (&foo_bar_caps)));
+  gst_caps_unref (caps);
+
+  caps = gst_pad_get_current_caps (h2->sinkpad);
+  fail_unless (caps != NULL);
+  fail_unless (gst_caps_can_intersect (caps,
+          gst_static_caps_get (&cea708_cc_data_caps)));
+  gst_caps_unref (caps);
+
+  buf = gst_buffer_new_and_alloc (128);
+
+  outbuf = gst_harness_push_and_pull (h, gst_buffer_ref (buf));
+
+  fail_unless (outbuf != NULL);
+  fail_unless (outbuf == buf);
+  gst_buffer_unref (outbuf);
+  gst_buffer_unref (buf);
+
+  fail_if (gst_harness_try_pull (h2) != NULL);
+
+  caps = gst_pad_get_current_caps (h->sinkpad);
+  fail_unless (caps != NULL);
+  fail_unless (gst_caps_can_intersect (caps,
+          gst_static_caps_get (&foo_bar_caps)));
+  gst_caps_unref (caps);
+
+  caps = gst_pad_get_current_caps (h2->sinkpad);
+  fail_unless (caps != NULL);
+  fail_unless (gst_caps_can_intersect (caps,
+          gst_static_caps_get (&cea708_cc_data_caps)));
+  gst_caps_unref (caps);
+
+  gst_harness_teardown (h);
+  gst_harness_teardown (h2);
+}
+
+GST_END_TEST;
+
+GST_START_TEST (captions_format_change)
+{
+  GstHarness *h, *h2;
+  GstBuffer *buf, *outbuf;
+  const guint8 caption_data[] = { 0, 1, 2, 3, 4, 5, 6, 7 };
+  GstCaps *caps;
+
+  h = gst_harness_new ("ccextractor");
+  h2 = gst_harness_new_with_element (h->element, NULL, NULL);
+
+  g_signal_connect (h->element, "pad-added", G_CALLBACK (on_caption_pad_added),
+      h2);
+
+  gst_harness_set_src_caps_str (h, "foo/bar");
+
+  buf = gst_buffer_new_and_alloc (128);
+  gst_buffer_add_video_caption_meta (buf, GST_VIDEO_CAPTION_TYPE_CEA708_RAW,
+      caption_data, sizeof (caption_data));
+
+  outbuf = gst_harness_push_and_pull (h, gst_buffer_ref (buf));
+
+  fail_unless (outbuf != NULL);
+  fail_unless (outbuf == buf);
+  gst_buffer_unref (outbuf);
+  gst_buffer_unref (buf);
+
+  fail_unless (h2->sinkpad != NULL);
+  outbuf = gst_harness_pull (h2);
+  fail_unless (outbuf != NULL);
+  fail_unless (gst_buffer_memcmp (outbuf, 0, caption_data,
+          sizeof (caption_data)) == 0);
+  gst_buffer_unref (outbuf);
+
+  caps = gst_pad_get_current_caps (h->sinkpad);
+  fail_unless (caps != NULL);
+  fail_unless (gst_caps_can_intersect (caps,
+          gst_static_caps_get (&foo_bar_caps)));
+  gst_caps_unref (caps);
+
+  caps = gst_pad_get_current_caps (h2->sinkpad);
+  fail_unless (caps != NULL);
+  fail_unless (gst_caps_can_intersect (caps,
+          gst_static_caps_get (&cea708_cc_data_caps)));
+  gst_caps_unref (caps);
+
+  buf = gst_buffer_new_and_alloc (128);
+  gst_buffer_add_video_caption_meta (buf, GST_VIDEO_CAPTION_TYPE_CEA708_CDP,
+      caption_data, sizeof (caption_data));
+
+  outbuf = gst_harness_push_and_pull (h, gst_buffer_ref (buf));
+
+  fail_unless (outbuf != NULL);
+  fail_unless (outbuf == buf);
+  gst_buffer_unref (outbuf);
+  gst_buffer_unref (buf);
+
+  fail_unless (h2->sinkpad != NULL);
+  outbuf = gst_harness_pull (h2);
+  fail_unless (outbuf != NULL);
+  fail_unless (gst_buffer_memcmp (outbuf, 0, caption_data,
+          sizeof (caption_data)) == 0);
+  gst_buffer_unref (outbuf);
+
+  caps = gst_pad_get_current_caps (h->sinkpad);
+  fail_unless (caps != NULL);
+  fail_unless (gst_caps_can_intersect (caps,
+          gst_static_caps_get (&foo_bar_caps)));
+  gst_caps_unref (caps);
+
+  caps = gst_pad_get_current_caps (h2->sinkpad);
+  fail_unless (caps != NULL);
+  fail_unless (gst_caps_can_intersect (caps,
+          gst_static_caps_get (&cea708_cdp_caps)));
+  gst_caps_unref (caps);
+
+  gst_harness_teardown (h);
+  gst_harness_teardown (h2);
+}
+
+GST_END_TEST;
+
+static Suite *
+ccextractor_suite (void)
+{
+  Suite *s = suite_create ("ccextractor");
+  TCase *tc = tcase_create ("general");
+
+  suite_add_tcase (s, tc);
+
+  tcase_add_test (tc, no_captions);
+  tcase_add_test (tc, captions);
+  tcase_add_test (tc, no_captions_at_beginning_and_end);
+  tcase_add_test (tc, captions_format_change);
+
+  return s;
+}
+
+GST_CHECK_MAIN (ccextractor);

tests/check/meson.build

@@ -23,6 +23,7 @@ base_tests = [
   [['elements/autovideoconvert.c']],
   [['elements/avwait.c']],
   [['elements/camerabin.c']],
+  [['elements/ccextractor.c']],
   [['elements/compositor.c']],
   [['elements/curlhttpsink.c'], not curl_dep.found(), [curl_dep]],
   [['elements/curlfilesink.c'], not curl_dep.found(), [curl_dep]],