media-check: add results file comparison

Adds a new expected-results argument to receive a file that is used
as a base for comparison with the new results. In case differences are
found, the application will print those issues.

validate/gst/validate/gst-validate-media-check.c

@@ -149,6 +149,7 @@ main (int argc, gchar ** argv)
 
   GError *err = NULL;
   gchar *output_file = NULL;
+  gchar *expected_file = NULL;
   gchar *output = NULL;
   gsize outputlength;
   gboolean ret;
@@ -157,6 +158,10 @@ main (int argc, gchar ** argv)
     {"output-file", 'o', 0, G_OPTION_ARG_FILENAME,
           &output_file, "The output file to store the results",
         NULL},
+    {"expected-results", 'e', 0, G_OPTION_ARG_FILENAME,
+          &expected_file, "The file contained the expected results (or the "
+          "last results found, for comparison)",
+        NULL},
     {NULL}
   };
 
@@ -195,6 +200,34 @@ main (int argc, gchar ** argv)
   if (output_file)
     gst_validate_media_info_save (&mi, output_file, NULL);
 
+  if (expected_file) {
+    GstValidateMediaInfo *expected_mi;
+    GError *err = NULL;
+
+    if (!g_path_is_absolute (expected_file)) {
+      gchar *cdir = g_get_current_dir ();
+      gchar *absolute = g_build_filename (cdir, expected_file, NULL);
+
+      g_free (expected_file);
+      g_free (cdir);
+
+      expected_file = absolute;
+    }
+
+    expected_mi = gst_validate_media_info_load (expected_file, &err);
+    if (expected_mi) {
+      if (!gst_validate_media_info_compare (expected_mi, &mi)) {
+        g_print ("Expected results didn't match\n");
+        ret = FALSE;
+      }
+      gst_validate_media_info_free (expected_mi);
+    } else {
+      g_print ("Failed to load expected results file: %s\n", err->message);
+      g_error_free (err);
+      ret = FALSE;
+    }
+  }
+
   gst_validate_media_info_clear (&mi);
 
   g_print ("Media info:\n%s\n", output);

validate/gst/validate/gst-validate-media-info.c

@@ -100,6 +100,13 @@ gst_validate_media_info_clear (GstValidateMediaInfo * mi)
     gst_validate_stream_info_free (mi->stream_info);
 }
 
+void
+gst_validate_media_info_free (GstValidateMediaInfo * mi)
+{
+  gst_validate_media_info_clear (mi);
+  g_free (mi);
+}
+
 gchar *
 gst_validate_media_info_to_string (GstValidateMediaInfo * mi, gsize * length)
 {
@@ -662,3 +669,43 @@ gst_validate_media_info_inspect_uri (GstValidateMediaInfo * mi,
 
   return ret;
 }
+
+gboolean
+gst_validate_media_info_compare (GstValidateMediaInfo * expected,
+    GstValidateMediaInfo * extracted)
+{
+  gboolean ret = TRUE;
+  if (expected->duration != extracted->duration) {
+    g_print ("Duration changed: %" GST_TIME_FORMAT " -> %" GST_TIME_FORMAT "\n",
+        GST_TIME_ARGS (expected->duration),
+        GST_TIME_ARGS (extracted->duration));
+    ret = FALSE;
+  }
+  if (expected->file_size != extracted->file_size) {
+    g_print ("File size changed: %" G_GUINT64_FORMAT " -> %" G_GUINT64_FORMAT
+        "\n", expected->file_size, extracted->file_size);
+    ret = FALSE;
+  }
+  if (expected->seekable && !extracted->seekable) {
+    g_print ("File isn't seekable anymore\n");
+    ret = FALSE;
+  }
+  if (expected->playback_error == NULL && extracted->playback_error) {
+    g_print ("Playback is now failing with: %s\n", extracted->playback_error);
+    ret = FALSE;
+  }
+  if (expected->reverse_playback_error == NULL
+      && extracted->reverse_playback_error) {
+    g_print ("Reverse playback is now failing with: %s\n",
+        extracted->reverse_playback_error);
+    ret = FALSE;
+  }
+  if (expected->stream_info
+      && !gst_caps_is_equal_fixed (expected->stream_info->caps,
+          extracted->stream_info->caps)) {
+    g_print ("Media caps changed: '%" GST_PTR_FORMAT "' -> '%" GST_PTR_FORMAT
+        "'\n", expected->stream_info->caps, extracted->stream_info->caps);
+    ret = FALSE;
+  }
+  return ret;
+}

validate/gst/validate/gst-validate-media-info.h

@@ -59,6 +59,7 @@ struct _GstValidateMediaInfo {
 
 void gst_validate_media_info_init (GstValidateMediaInfo * mi);
 void gst_validate_media_info_clear (GstValidateMediaInfo * mi);
+void gst_validate_media_info_free (GstValidateMediaInfo * mi);
 
 gchar * gst_validate_media_info_to_string (GstValidateMediaInfo * mi, gsize * length);
 gboolean gst_validate_media_info_save (GstValidateMediaInfo * mi, const gchar * path, GError ** err);
@@ -66,6 +67,8 @@ GstValidateMediaInfo * gst_validate_media_info_load (const gchar * path, GError
 
 gboolean gst_validate_media_info_inspect_uri (GstValidateMediaInfo * mi, const gchar * uri, GError ** err);
 
+gboolean gst_validate_media_info_compare (GstValidateMediaInfo * expected, GstValidateMediaInfo * extracted);
+
 G_END_DECLS
 
 #endif /* __GST_VALIDATE_MEDIA_INFO_H__ */