... and add the missing file

Original commit message from CVS:
... and add the missing file

check/elements/matroskamux.c

+/* GStreamer
+ *
+ * unit test for matroskamux
+ *
+ * Copyright (C) <2005> Michal Benes <michal.benes@xeris.cz>
+ *
+ * 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., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include <unistd.h>
+
+#include <gst/check/gstcheck.h>
+
+GList *buffers = NULL;
+
+/* For ease of programming we use globals to keep refs for our floating
+ * src and sink pads we create; otherwise we always have to do get_pad,
+ * get_peer, and then remove references in every test function */
+GstPad *mysrcpad, *mysinkpad;
+
+#define AC3_CAPS_STRING "audio/x-ac3, " \
+                        "channels = (int) 1, " \
+                        "rate = (int) 8000"
+#define VORBIS_CAPS_STRING "audio/x-vorbis, " \
+                           "channels = (int) 1, " \
+                           "rate = (int) 8000, " \
+                           "streamheader=(buffer)<10, 2020, 303030>"
+
+static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
+    GST_PAD_SINK,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS ("video/x-matroska"));
+static GstStaticPadTemplate srcvorbistemplate = GST_STATIC_PAD_TEMPLATE ("src",
+    GST_PAD_SRC,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS (VORBIS_CAPS_STRING));
+
+static GstStaticPadTemplate srcac3template = GST_STATIC_PAD_TEMPLATE ("src",
+    GST_PAD_SRC,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS (AC3_CAPS_STRING));
+
+
+GstPad *
+setup_src_pad (GstElement * element,
+    GstStaticPadTemplate * srctemplate, GstCaps * caps)
+{
+  GstPad *srcpad, *sinkpad;
+
+  GST_DEBUG_OBJECT (element, "setting up sending pad");
+  /* sending pad */
+  srcpad =
+      gst_pad_new_from_template (gst_static_pad_template_get (srctemplate),
+      "src");
+  fail_if (srcpad == NULL, "Could not create a srcpad");
+  ASSERT_OBJECT_REFCOUNT (srcpad, "srcpad", 1);
+
+  sinkpad = gst_element_get_pad (element, "audio_%d");
+  fail_if (sinkpad == NULL, "Could not get sink pad from %s",
+      GST_ELEMENT_NAME (element));
+  ASSERT_OBJECT_REFCOUNT (sinkpad, "sinkpad", 2);
+  if (caps)
+    fail_unless (gst_pad_set_caps (srcpad, caps));
+  fail_unless (gst_pad_link (srcpad, sinkpad) == GST_PAD_LINK_OK,
+      "Could not link source and %s sink pads", GST_ELEMENT_NAME (element));
+  gst_object_unref (sinkpad);   /* because we got it higher up */
+  ASSERT_OBJECT_REFCOUNT (sinkpad, "sinkpad", 1);
+
+  return srcpad;
+}
+
+void
+teardown_src_pad (GstElement * element)
+{
+  GstPad *srcpad, *sinkpad;
+
+  /* clean up floating src pad */
+  sinkpad = gst_element_get_pad (element, "audio_0");
+  ASSERT_OBJECT_REFCOUNT (sinkpad, "sinkpad", 2);
+  srcpad = gst_pad_get_peer (sinkpad);
+
+  gst_pad_unlink (srcpad, sinkpad);
+
+  /* pad refs held by both creator and this function (through _get) */
+  ASSERT_OBJECT_REFCOUNT (sinkpad, "sinkpad", 2);
+  gst_object_unref (sinkpad);
+  /* one more ref is held by element itself */
+
+  /* pad refs held by both creator and this function (through _get_peer) */
+  ASSERT_OBJECT_REFCOUNT (srcpad, "srcpad", 2);
+  gst_object_unref (srcpad);
+  gst_object_unref (srcpad);
+}
+
+GstPad *
+setup_sink_pad (GstElement * element, GstStaticPadTemplate * template,
+    GstCaps * caps)
+{
+  GstPad *srcpad, *sinkpad;
+
+  GST_DEBUG_OBJECT (element, "setting up receiving pad");
+  /* receiving pad */
+  sinkpad =
+      gst_pad_new_from_template (gst_static_pad_template_get (template),
+      "sink");
+  fail_if (sinkpad == NULL, "Could not create a sinkpad");
+
+  srcpad = gst_element_get_pad (element, "src");
+  fail_if (srcpad == NULL, "Could not get source pad from %s",
+      GST_ELEMENT_NAME (element));
+  if (caps)
+    fail_unless (gst_pad_set_caps (sinkpad, caps));
+  gst_pad_set_chain_function (sinkpad, gst_check_chain_func);
+
+  fail_unless (gst_pad_link (srcpad, sinkpad) == GST_PAD_LINK_OK,
+      "Could not link %s source and sink pads", GST_ELEMENT_NAME (element));
+  gst_object_unref (srcpad);    /* because we got it higher up */
+  ASSERT_OBJECT_REFCOUNT (srcpad, "srcpad", 2);
+
+  return sinkpad;
+}
+
+void
+teardown_sink_pad (GstElement * element)
+{
+  GstPad *srcpad, *sinkpad;
+
+  /* clean up floating sink pad */
+  srcpad = gst_element_get_pad (element, "src");
+  sinkpad = gst_pad_get_peer (srcpad);
+  gst_pad_unlink (srcpad, sinkpad);
+
+  /* pad refs held by both creator and this function (through _get_pad) */
+  ASSERT_OBJECT_REFCOUNT (srcpad, "srcpad", 3);
+  gst_object_unref (srcpad);
+  /* one more ref is held by element itself */
+
+  /* pad refs held by both creator and this function (through _get_peer) */
+  ASSERT_OBJECT_REFCOUNT (sinkpad, "sinkpad", 2);
+  gst_object_unref (sinkpad);
+  gst_object_unref (sinkpad);
+}
+
+
+GstElement *
+setup_matroskamux (GstStaticPadTemplate * srctemplate)
+{
+  GstElement *matroskamux;
+
+  GST_DEBUG ("setup_matroskamux");
+  matroskamux = gst_check_setup_element ("matroskamux");
+  mysrcpad = setup_src_pad (matroskamux, srctemplate, NULL);
+  mysinkpad = setup_sink_pad (matroskamux, &sinktemplate, NULL);
+
+  return matroskamux;
+}
+
+void
+cleanup_matroskamux (GstElement * matroskamux)
+{
+  GST_DEBUG ("cleanup_matroskamux");
+  gst_element_set_state (matroskamux, GST_STATE_NULL);
+
+  teardown_src_pad (matroskamux);
+  teardown_sink_pad (matroskamux);
+  gst_check_teardown_element (matroskamux);
+}
+
+void
+check_buffer_data (GstBuffer * buffer, void *data, size_t data_size)
+{
+  fail_unless (GST_BUFFER_SIZE (buffer) == data_size);
+  fail_unless (memcmp (data, GST_BUFFER_DATA (buffer), data_size) == 0);
+}
+
+GST_START_TEST (test_ebml_header)
+{
+  GstElement *matroskamux;
+  GstBuffer *inbuffer, *outbuffer;
+  int num_buffers;
+  int i;
+  guint8 data0[12] =
+      { 0x1a, 0x45, 0xdf, 0xa3, 0x01, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+        0xff };
+  guint8 data1[12] =
+      { 0x42, 0x82, 0x89, 0x6d, 0x61, 0x74, 0x72, 0x6f, 0x73, 0x6b, 0x61,
+        0x00 };
+  guint8 data2[4] = { 0x42, 0x87, 0x81, 0x01 };
+  guint8 data3[4] = { 0x42, 0x85, 0x81, 0x01 };
+  guint8 data4[8] = { 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x14 };
+
+  matroskamux = setup_matroskamux (&srcac3template);
+  fail_unless (gst_element_set_state (matroskamux,
+          GST_STATE_PLAYING) == GST_STATE_CHANGE_SUCCESS,
+      "could not set to playing");
+
+  inbuffer = gst_buffer_new_and_alloc (1);
+  ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);
+  fail_unless (gst_pad_push (mysrcpad, inbuffer) == GST_FLOW_OK);
+  num_buffers = g_list_length (buffers);
+  fail_unless (num_buffers >= 5);
+
+  for (i = 0; i < num_buffers; ++i) {
+    outbuffer = GST_BUFFER (buffers->data);
+    fail_if (outbuffer == NULL);
+    buffers = g_list_remove (buffers, outbuffer);
+
+    switch (i) {
+      case 0:
+        check_buffer_data (outbuffer, data0, sizeof (data0));
+        break;
+      case 1:
+        check_buffer_data (outbuffer, data1, sizeof (data1));
+        break;
+      case 2:
+        check_buffer_data (outbuffer, data2, sizeof (data2));
+        break;
+      case 3:
+        check_buffer_data (outbuffer, data3, sizeof (data3));
+        break;
+      case 4:
+        check_buffer_data (outbuffer, data4, sizeof (data4));
+        break;
+      default:
+        break;
+    }
+
+    ASSERT_BUFFER_REFCOUNT (outbuffer, "outbuffer", 1);
+    gst_buffer_unref (outbuffer);
+    outbuffer = NULL;
+  }
+
+  cleanup_matroskamux (matroskamux);
+  g_list_free (buffers);
+  buffers = NULL;
+}
+
+GST_END_TEST;
+
+
+GST_START_TEST (test_vorbis_header)
+{
+  GstElement *matroskamux;
+  GstBuffer *inbuffer, *outbuffer;
+  GstCaps *caps;
+  int num_buffers;
+  int i;
+  gboolean vorbis_header_found = FALSE;
+  guint8 data[12] =
+      { 0x63, 0xa2, 0x89, 0x02, 0x01, 0x02, 0x10, 0x20, 0x20, 0x30, 0x30,
+        0x30 };
+
+  matroskamux = setup_matroskamux (&srcvorbistemplate);
+  fail_unless (gst_element_set_state (matroskamux,
+          GST_STATE_PLAYING) == GST_STATE_CHANGE_SUCCESS,
+      "could not set to playing");
+
+  inbuffer = gst_buffer_new_and_alloc (1);
+  caps = gst_caps_from_string (VORBIS_CAPS_STRING);
+  gst_buffer_set_caps (inbuffer, caps);
+  gst_caps_unref (caps);
+  ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);
+
+  fail_unless (gst_pad_push (mysrcpad, inbuffer) == GST_FLOW_OK);
+  num_buffers = g_list_length (buffers);
+
+  for (i = 0; i < num_buffers; ++i) {
+    outbuffer = GST_BUFFER (buffers->data);
+    fail_if (outbuffer == NULL);
+    buffers = g_list_remove (buffers, outbuffer);
+
+    if (!vorbis_header_found && GST_BUFFER_SIZE (outbuffer) == sizeof (data)) {
+      vorbis_header_found =
+          memcmp (GST_BUFFER_DATA (outbuffer), data, sizeof (data));
+    }
+
+    ASSERT_BUFFER_REFCOUNT (outbuffer, "outbuffer", 1);
+    gst_buffer_unref (outbuffer);
+    outbuffer = NULL;
+  }
+
+  fail_unless (vorbis_header_found);
+
+  cleanup_matroskamux (matroskamux);
+  g_list_free (buffers);
+  buffers = NULL;
+}
+
+GST_END_TEST;
+
+
+GST_START_TEST (test_block_group)
+{
+  GstElement *matroskamux;
+  GstBuffer *inbuffer, *outbuffer;
+  GstCaps *caps;
+  int num_buffers;
+  int i;
+  guint8 data0[9] = { 0xa0, 0x01, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
+  guint8 data1[2] = { 0xa1, 0x85 };
+  guint8 data2[4] = { 0x81, 0x00, 0x01, 0x00 };
+  guint8 data3[1] = { 0x42 };
+  guint8 data4[8] = { 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07 };
+
+  matroskamux = setup_matroskamux (&srcac3template);
+  fail_unless (gst_element_set_state (matroskamux,
+          GST_STATE_PLAYING) == GST_STATE_CHANGE_SUCCESS,
+      "could not set to playing");
+
+  /* Generate the header */
+  inbuffer = gst_buffer_new_and_alloc (1);
+  GST_BUFFER_TIMESTAMP (inbuffer) = 0;
+  caps = gst_caps_from_string (AC3_CAPS_STRING);
+  gst_buffer_set_caps (inbuffer, caps);
+  gst_caps_unref (caps);
+  ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);
+
+  fail_unless (gst_pad_push (mysrcpad, inbuffer) == GST_FLOW_OK);
+  num_buffers = g_list_length (buffers);
+
+  for (i = 0; i < num_buffers; ++i) {
+    outbuffer = GST_BUFFER (buffers->data);
+    fail_if (outbuffer == NULL);
+    buffers = g_list_remove (buffers, outbuffer);
+
+    ASSERT_BUFFER_REFCOUNT (outbuffer, "outbuffer", 1);
+    gst_buffer_unref (outbuffer);
+    outbuffer = NULL;
+  }
+
+  g_list_free (buffers);
+  buffers = NULL;
+
+  /* Now push a buffer */
+  inbuffer = gst_buffer_new_and_alloc (1);
+  GST_BUFFER_DATA (inbuffer)[0] = 0x42;
+  GST_BUFFER_TIMESTAMP (inbuffer) = 1000000;
+  caps = gst_caps_from_string (AC3_CAPS_STRING);
+  gst_buffer_set_caps (inbuffer, caps);
+  gst_caps_unref (caps);
+  ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);
+
+  fail_unless (gst_pad_push (mysrcpad, inbuffer) == GST_FLOW_OK);
+  num_buffers = g_list_length (buffers);
+  fail_unless (num_buffers >= 5);
+
+  for (i = 0; i < num_buffers; ++i) {
+    outbuffer = GST_BUFFER (buffers->data);
+    fail_if (outbuffer == NULL);
+    buffers = g_list_remove (buffers, outbuffer);
+
+    switch (i) {
+      case 0:
+        check_buffer_data (outbuffer, data0, sizeof (data0));
+        break;
+      case 1:
+        check_buffer_data (outbuffer, data1, sizeof (data1));
+        break;
+      case 2:
+        check_buffer_data (outbuffer, data2, sizeof (data2));
+        break;
+      case 3:
+        check_buffer_data (outbuffer, data3, sizeof (data3));
+        break;
+      case 4:
+        check_buffer_data (outbuffer, data4, sizeof (data4));
+        break;
+      default:
+        break;
+    }
+
+    ASSERT_BUFFER_REFCOUNT (outbuffer, "outbuffer", 1);
+    gst_buffer_unref (outbuffer);
+    outbuffer = NULL;
+  }
+
+  g_list_free (buffers);
+  buffers = NULL;
+
+  cleanup_matroskamux (matroskamux);
+}
+
+GST_END_TEST;
+
+Suite *
+matroskamux_suite (void)
+{
+  Suite *s = suite_create ("matroskamux");
+  TCase *tc_chain = tcase_create ("general");
+
+  suite_add_tcase (s, tc_chain);
+  tcase_add_test (tc_chain, test_ebml_header);
+  tcase_add_test (tc_chain, test_vorbis_header);
+  tcase_add_test (tc_chain, test_block_group);
+
+  return s;
+}
+
+int
+main (int argc, char **argv)
+{
+  int nf;
+
+  Suite *s = matroskamux_suite ();
+  SRunner *sr = srunner_create (s);
+
+  gst_check_init (&argc, &argv);
+
+  srunner_run_all (sr, CK_NORMAL);
+  nf = srunner_ntests_failed (sr);
+  srunner_free (sr);
+
+  return nf;
+}

tests/check/elements/matroskamux.c

+/* GStreamer
+ *
+ * unit test for matroskamux
+ *
+ * Copyright (C) <2005> Michal Benes <michal.benes@xeris.cz>
+ *
+ * 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., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include <unistd.h>
+
+#include <gst/check/gstcheck.h>
+
+GList *buffers = NULL;
+
+/* For ease of programming we use globals to keep refs for our floating
+ * src and sink pads we create; otherwise we always have to do get_pad,
+ * get_peer, and then remove references in every test function */
+GstPad *mysrcpad, *mysinkpad;
+
+#define AC3_CAPS_STRING "audio/x-ac3, " \
+                        "channels = (int) 1, " \
+                        "rate = (int) 8000"
+#define VORBIS_CAPS_STRING "audio/x-vorbis, " \
+                           "channels = (int) 1, " \
+                           "rate = (int) 8000, " \
+                           "streamheader=(buffer)<10, 2020, 303030>"
+
+static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
+    GST_PAD_SINK,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS ("video/x-matroska"));
+static GstStaticPadTemplate srcvorbistemplate = GST_STATIC_PAD_TEMPLATE ("src",
+    GST_PAD_SRC,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS (VORBIS_CAPS_STRING));
+
+static GstStaticPadTemplate srcac3template = GST_STATIC_PAD_TEMPLATE ("src",
+    GST_PAD_SRC,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS (AC3_CAPS_STRING));
+
+
+GstPad *
+setup_src_pad (GstElement * element,
+    GstStaticPadTemplate * srctemplate, GstCaps * caps)
+{
+  GstPad *srcpad, *sinkpad;
+
+  GST_DEBUG_OBJECT (element, "setting up sending pad");
+  /* sending pad */
+  srcpad =
+      gst_pad_new_from_template (gst_static_pad_template_get (srctemplate),
+      "src");
+  fail_if (srcpad == NULL, "Could not create a srcpad");
+  ASSERT_OBJECT_REFCOUNT (srcpad, "srcpad", 1);
+
+  sinkpad = gst_element_get_pad (element, "audio_%d");
+  fail_if (sinkpad == NULL, "Could not get sink pad from %s",
+      GST_ELEMENT_NAME (element));
+  ASSERT_OBJECT_REFCOUNT (sinkpad, "sinkpad", 2);
+  if (caps)
+    fail_unless (gst_pad_set_caps (srcpad, caps));
+  fail_unless (gst_pad_link (srcpad, sinkpad) == GST_PAD_LINK_OK,
+      "Could not link source and %s sink pads", GST_ELEMENT_NAME (element));
+  gst_object_unref (sinkpad);   /* because we got it higher up */
+  ASSERT_OBJECT_REFCOUNT (sinkpad, "sinkpad", 1);
+
+  return srcpad;
+}
+
+void
+teardown_src_pad (GstElement * element)
+{
+  GstPad *srcpad, *sinkpad;
+
+  /* clean up floating src pad */
+  sinkpad = gst_element_get_pad (element, "audio_0");
+  ASSERT_OBJECT_REFCOUNT (sinkpad, "sinkpad", 2);
+  srcpad = gst_pad_get_peer (sinkpad);
+
+  gst_pad_unlink (srcpad, sinkpad);
+
+  /* pad refs held by both creator and this function (through _get) */
+  ASSERT_OBJECT_REFCOUNT (sinkpad, "sinkpad", 2);
+  gst_object_unref (sinkpad);
+  /* one more ref is held by element itself */
+
+  /* pad refs held by both creator and this function (through _get_peer) */
+  ASSERT_OBJECT_REFCOUNT (srcpad, "srcpad", 2);
+  gst_object_unref (srcpad);
+  gst_object_unref (srcpad);
+}
+
+GstPad *
+setup_sink_pad (GstElement * element, GstStaticPadTemplate * template,
+    GstCaps * caps)
+{
+  GstPad *srcpad, *sinkpad;
+
+  GST_DEBUG_OBJECT (element, "setting up receiving pad");
+  /* receiving pad */
+  sinkpad =
+      gst_pad_new_from_template (gst_static_pad_template_get (template),
+      "sink");
+  fail_if (sinkpad == NULL, "Could not create a sinkpad");
+
+  srcpad = gst_element_get_pad (element, "src");
+  fail_if (srcpad == NULL, "Could not get source pad from %s",
+      GST_ELEMENT_NAME (element));
+  if (caps)
+    fail_unless (gst_pad_set_caps (sinkpad, caps));
+  gst_pad_set_chain_function (sinkpad, gst_check_chain_func);
+
+  fail_unless (gst_pad_link (srcpad, sinkpad) == GST_PAD_LINK_OK,
+      "Could not link %s source and sink pads", GST_ELEMENT_NAME (element));
+  gst_object_unref (srcpad);    /* because we got it higher up */
+  ASSERT_OBJECT_REFCOUNT (srcpad, "srcpad", 2);
+
+  return sinkpad;
+}
+
+void
+teardown_sink_pad (GstElement * element)
+{
+  GstPad *srcpad, *sinkpad;
+
+  /* clean up floating sink pad */
+  srcpad = gst_element_get_pad (element, "src");
+  sinkpad = gst_pad_get_peer (srcpad);
+  gst_pad_unlink (srcpad, sinkpad);
+
+  /* pad refs held by both creator and this function (through _get_pad) */
+  ASSERT_OBJECT_REFCOUNT (srcpad, "srcpad", 3);
+  gst_object_unref (srcpad);
+  /* one more ref is held by element itself */
+
+  /* pad refs held by both creator and this function (through _get_peer) */
+  ASSERT_OBJECT_REFCOUNT (sinkpad, "sinkpad", 2);
+  gst_object_unref (sinkpad);
+  gst_object_unref (sinkpad);
+}
+
+
+GstElement *
+setup_matroskamux (GstStaticPadTemplate * srctemplate)
+{
+  GstElement *matroskamux;
+
+  GST_DEBUG ("setup_matroskamux");
+  matroskamux = gst_check_setup_element ("matroskamux");
+  mysrcpad = setup_src_pad (matroskamux, srctemplate, NULL);
+  mysinkpad = setup_sink_pad (matroskamux, &sinktemplate, NULL);
+
+  return matroskamux;
+}
+
+void
+cleanup_matroskamux (GstElement * matroskamux)
+{
+  GST_DEBUG ("cleanup_matroskamux");
+  gst_element_set_state (matroskamux, GST_STATE_NULL);
+
+  teardown_src_pad (matroskamux);
+  teardown_sink_pad (matroskamux);
+  gst_check_teardown_element (matroskamux);
+}
+
+void
+check_buffer_data (GstBuffer * buffer, void *data, size_t data_size)
+{
+  fail_unless (GST_BUFFER_SIZE (buffer) == data_size);
+  fail_unless (memcmp (data, GST_BUFFER_DATA (buffer), data_size) == 0);
+}
+
+GST_START_TEST (test_ebml_header)
+{