tests/check/: Add simple unit test for the xingmux element.

Original commit message from CVS:
* tests/check/Makefile.am:
* tests/check/elements/.cvsignore:
* tests/check/elements/xingmux.c: (setup_xingmux),
(cleanup_xingmux), (GST_START_TEST), (xingmux_suite), (main):
* tests/check/elements/xingmux_testdata.h:
Add simple unit test for the xingmux element.
* gst/xingheader/gstxingmux.c: (generate_xing_header),
(gst_xing_mux_finalize), (xing_reset):
Fix a memleak and invalid seek tables with less than 100 MP3 frames.

gst/mpegaudioparse/gstxingmux.c

@@ -319,7 +319,7 @@ generate_xing_header (GstXingMux * xing)
       GstXingSeekEntry *entry = (GstXingSeekEntry *) it->data;
       gint64 byte;
 
-      if ((entry->timestamp * 100) / duration >= percent) {
+      while ((entry->timestamp * 100) / duration >= percent) {
         byte = (entry->byte * 256) / byte_count;
         GST_DEBUG ("  %d %% -- %d 1/256", percent, byte);
         *data = byte;
@@ -327,6 +327,17 @@ generate_xing_header (GstXingMux * xing)
         percent++;
       }
     }
+
+    if (percent < 100) {
+      guchar b = *(data - 1);
+      gint i;
+
+      for (i = percent; i < 100; i++) {
+        GST_DEBUG ("  %d %% -- %d 1/256", i, b);
+        *data = b;
+        data++;
+      }
+    }
   }
 
   GST_DEBUG ("Setting Xing flags to 0x%x\n", *xing_flags);
@@ -376,6 +387,12 @@ gst_xing_mux_finalize (GObject * obj)
     xing->adapter = NULL;
   }
 
+  if (xing->seek_table) {
+    g_list_foreach (xing->seek_table, (GFunc) g_free, NULL);
+    g_list_free (xing->seek_table);
+    xing->seek_table = NULL;
+  }
+
   G_OBJECT_CLASS (parent_class)->finalize (obj);
 }
 
@@ -389,6 +406,7 @@ xing_reset (GstXingMux * xing)
 
   if (xing->seek_table) {
     g_list_foreach (xing->seek_table, (GFunc) g_free, NULL);
+    g_list_free (xing->seek_table);
     xing->seek_table = NULL;
   }
 

tests/check/elements/xingmux.c

@@ -0,0 +1,162 @@
+/* GStreamer
+ *
+ * Copyright (C) 2008 Sebastian Dröge <slomo@circular-chaos.org>
+ *
+ * xingmux.c: Unit test for the xingmux element
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1 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
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ */
+
+#include <gst/gst.h>
+#include <gst/base/gstbasetransform.h>
+#include <gst/check/gstcheck.h>
+
+#include <math.h>
+
+#include "xingmux_testdata.h"
+
+/* 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;
+
+static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
+    GST_PAD_SINK,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS ("audio/mpeg, " "mpegversion = (int) 1," "layer = (int) 3")
+    );
+static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
+    GST_PAD_SRC,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS ("audio/mpeg, " "mpegversion = (int) 1," "layer = (int) 3")
+    );
+
+GstElement *
+setup_xingmux ()
+{
+  GstElement *xingmux;
+
+  GST_DEBUG ("setup_xingmux");
+  xingmux = gst_check_setup_element ("xingmux");
+  mysrcpad = gst_check_setup_src_pad (xingmux, &srctemplate, NULL);
+  mysinkpad = gst_check_setup_sink_pad (xingmux, &sinktemplate, NULL);
+  gst_pad_set_active (mysrcpad, TRUE);
+  gst_pad_set_active (mysinkpad, TRUE);
+
+  return xingmux;
+}
+
+void
+cleanup_xingmux (GstElement * xingmux)
+{
+  GST_DEBUG ("cleanup_xingmux");
+
+  g_list_foreach (buffers, (GFunc) gst_mini_object_unref, NULL);
+  g_list_free (buffers);
+  buffers = NULL;
+
+  gst_pad_set_active (mysrcpad, FALSE);
+  gst_pad_set_active (mysinkpad, FALSE);
+  gst_check_teardown_src_pad (xingmux);
+  gst_check_teardown_sink_pad (xingmux);
+  gst_check_teardown_element (xingmux);
+}
+
+GST_START_TEST (test_xing_remux)
+{
+  GstElement *xingmux;
+  GstBuffer *inbuffer;
+  GList *it;
+  guint8 *verify_data;
+
+  xingmux = setup_xingmux ();
+
+  inbuffer = gst_buffer_new_and_alloc (sizeof (test_xing));
+  memcpy (GST_BUFFER_DATA (inbuffer), test_xing, sizeof (test_xing));
+
+  gst_buffer_set_caps (inbuffer, GST_PAD_CAPS (mysrcpad));
+  ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);
+
+
+  /* FIXME: why are the xingmux pads flushing? */
+  fail_unless (gst_pad_push_event (mysrcpad, gst_event_new_flush_stop ()));
+
+  /* pushing gives away my reference ... */
+  fail_unless (gst_pad_push (mysrcpad, inbuffer) == GST_FLOW_OK);
+  fail_unless (gst_pad_push_event (mysrcpad, gst_event_new_eos ()));
+  /* ... and puts a new buffer on the global list */
+  fail_unless_equals_int (g_list_length (buffers), 93);
+
+  verify_data = test_xing;
+  for (it = buffers; it != NULL; it = it->next) {
+    GstBuffer *outbuffer = (GstBuffer *) it->data;
+
+    if (it == buffers) {
+      gint j;
+
+      /* Empty Xing header, should be the same as input data until the "Xing" marker
+       * and zeroes afterwards. */
+      fail_unless (memcmp (test_xing, GST_BUFFER_DATA (outbuffer), 25) == 0);
+      for (j = 26; j < GST_BUFFER_SIZE (outbuffer); j++)
+        fail_unless (GST_BUFFER_DATA (outbuffer)[j] == 0);
+      verify_data += GST_BUFFER_SIZE (outbuffer);
+    } else if (it->next != NULL) {
+      /* Should contain the raw MP3 data without changes */
+      fail_unless (memcmp (verify_data, GST_BUFFER_DATA (outbuffer),
+              GST_BUFFER_SIZE (outbuffer)) == 0);
+      verify_data += GST_BUFFER_SIZE (outbuffer);
+    } else {
+      /* Last buffer is the rewrite of the first buffer and should be exactly the same
+       * as the old Xing header we had */
+      fail_unless (memcmp (test_xing, GST_BUFFER_DATA (outbuffer),
+              GST_BUFFER_SIZE (outbuffer)) == 0);
+    }
+  }
+
+  /* cleanup */
+  cleanup_xingmux (xingmux);
+}
+
+GST_END_TEST;
+
+Suite *
+xingmux_suite (void)
+{
+  Suite *s = suite_create ("xingmux");
+  TCase *tc_chain = tcase_create ("general");
+
+  suite_add_tcase (s, tc_chain);
+  tcase_add_test (tc_chain, test_xing_remux);
+
+  return s;
+}
+
+int
+main (int argc, char **argv)
+{
+  int nf;
+
+  Suite *s = xingmux_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;
+}