Somewhat improve error reporting

Original commit message from CVS:
Somewhat improve error reporting

ext/xvid/gstxvid.c

@@ -21,13 +21,59 @@
 #include "config.h"
 #endif
 
+#include <string.h>
+
 #include "gstxviddec.h"
 #include "gstxvidenc.h"
 
+gchar *
+gst_xvid_error (int errorcode)
+{
+  gchar *error;
+
+  switch (errorcode) {
+    case XVID_ERR_FAIL:
+      error = "Operation failed";
+      break;
+    case XVID_ERR_OK:
+      error = "No error";
+      break;
+    case XVID_ERR_MEMORY:
+      error = "Memory error";
+      break;
+    case XVID_ERR_FORMAT:
+      error = "Invalid format";
+      break;
+    default:
+      error = "Unknown error";
+      break;
+  }
+
+  return error;
+}
+
 static gboolean
 plugin_init (GModule   *module,
              GstPlugin *plugin)
 {
+  XVID_INIT_PARAM xinit;
+  gint ret;
+
+  /* set up xvid initially (function pointers, CPU flags) */
+  memset(&xinit, 0, sizeof(XVID_INIT_PARAM));
+  xinit.cpu_flags = 0;
+  if ((ret = xvid_init(NULL, 0, &xinit, NULL)) != XVID_ERR_OK) {
+    g_warning("Faied to initialize XviD: %s (%d)",
+	      gst_xvid_error(ret), ret);
+    return FALSE;
+  }
+  
+  if (xinit.api_version != API_VERSION) {
+    g_warning("Xvid API version mismatch! %d.%d (that's us) != %d.%d (lib)",
+              (API_VERSION >> 8) & 0xff, API_VERSION & 0xff,
+              (xinit.api_version >> 8) & 0xff, xinit.api_version & 0xff);
+  }
+
   return (gst_xviddec_plugin_init(module, plugin) &&
           gst_xvidenc_plugin_init(module, plugin));
 }

ext/xvid/gstxviddec.c

@@ -120,18 +120,6 @@ static void
 gst_xviddec_class_init (GstXvidDecClass *klass)
 {
   GObjectClass *gobject_class = (GObjectClass *) klass;
-  XVID_INIT_PARAM xinit;
-
-  /* set up xvid initially (function pointers, CPU flags) */
-  memset(&xinit, 0, sizeof(xinit));
-  xinit.cpu_flags = 0;
-  xvid_init(NULL, 0, &xinit, NULL);
-  if (xinit.api_version != API_VERSION) {
-    g_error("Xvid API version mismatch! %d.%d (that's us) != %d.%d (lib)",
-            (API_VERSION >> 8) & 0xff, API_VERSION & 0xff,
-            (xinit.api_version >> 8) & 0xff, xinit.api_version & 0xff);
-    return;
-  }
 
   parent_class = g_type_class_ref(GST_TYPE_ELEMENT);
 
@@ -187,21 +175,10 @@ gst_xviddec_setup (GstXvidDec *xviddec)
 
   if ((ret = xvid_decore(NULL, XVID_DEC_CREATE,
                          &xdec, NULL)) != XVID_ERR_OK) {
-    char *error;
+    gst_element_error(GST_ELEMENT(xviddec),
-    switch (ret) {
+		      "Setting parameters %dx%d@%d failed: %s (%d)",
-      case XVID_ERR_MEMORY:
+	              xviddec->width, xviddec->height, xviddec->csp,
-        error = "Memory allocation error";
+		      gst_xvid_error(ret), ret);
-        break;
-      case XVID_ERR_FORMAT:
-        error = "Bad format";
-        break;
-      default:
-        error = "Internal failure";
-        break;
-    }
-    GST_DEBUG(GST_CAT_PLUGIN_INFO,
-              "Setting parameters %dx%d@%d failed: %s",
-              xviddec->width, xviddec->height, xviddec->csp, error);
     return FALSE;
   }
 
@@ -260,7 +237,8 @@ gst_xviddec_chain (GstPad    *pad,
   if ((ret = xvid_decore(xviddec->handle, XVID_DEC_DECODE,
                          &xframe, NULL))) {
     gst_element_error(GST_ELEMENT(xviddec),
-                      "Error decoding xvid frame: %d\n", ret);
+                      "Error decoding xvid frame: %s (%d)\n",
+		      gst_xvid_error(ret), ret);
     gst_buffer_unref(buf);
     return;
   }

ext/xvid/gstxviddec.h

@@ -65,6 +65,9 @@ GType gst_xviddec_get_type(void);
 gboolean gst_xviddec_plugin_init (GModule   *module,
                                   GstPlugin *plugin);
 
+/* in gstxvid.c */
+extern gchar * gst_xvid_error (int errorcode);
+
 #ifdef __cplusplus
 }
 #endif /* __cplusplus */

ext/xvid/gstxvidenc.c

@@ -131,7 +131,6 @@ gst_xvidenc_get_type(void)
 static void
 gst_xvidenc_class_init (GstXvidEncClass *klass)
 {
-  XVID_INIT_PARAM xinit;
   GstElementClass *gstelement_class;
   GObjectClass *gobject_class;
 
@@ -140,17 +139,6 @@ gst_xvidenc_class_init (GstXvidEncClass *klass)
 
   parent_class = g_type_class_ref(GST_TYPE_ELEMENT);
 
-  /* set up xvid initially (function pointers, CPU flags) */
-  memset(&xinit, 0, sizeof(xinit));
-  xinit.cpu_flags = 0;
-  xvid_init(NULL, 0, &xinit, NULL);
-  if (xinit.api_version != API_VERSION) {
-    g_error("Xvid API version mismatch! %d.%d (that's us) != %d.%d (lib)",
-            (API_VERSION >> 8) & 0xff, API_VERSION & 0xff,
-            (xinit.api_version >> 8) & 0xff, xinit.api_version & 0xff);
-    return;
-  }
-
   g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_BITRATE,
     g_param_spec_ulong("bitrate","Bitrate",
                        "Target video bitrate",
@@ -237,7 +225,8 @@ gst_xvidenc_setup (GstXvidEnc *xvidenc)
   if ((ret = xvid_encore(NULL, XVID_ENC_CREATE,
                          &xenc, NULL)) != XVID_ERR_OK) {
     gst_element_error(GST_ELEMENT(xvidenc),
-                      "Error setting up xvid encoder: %d\n", ret);
+                      "Error setting up xvid encoder: %s (%d)",
+		      gst_xvid_error(ret), ret);
     return FALSE;
   }
 
@@ -291,7 +280,8 @@ gst_xvidenc_chain (GstPad    *pad,
   if ((ret = xvid_encore(xvidenc->handle, XVID_ENC_ENCODE,
                          &xframe, NULL)) != XVID_ERR_OK) {
     gst_element_error(GST_ELEMENT(xvidenc),
-                      "Error encoding xvid frame: %d\n", ret);
+                      "Error encoding xvid frame: %s (%d)",
+		      gst_xvid_error(ret), ret);
     gst_buffer_unref(buf);
     return;
   }

ext/xvid/gstxvidenc.h

@@ -74,6 +74,9 @@ GType gst_xvidenc_get_type(void);
 gboolean gst_xvidenc_plugin_init (GModule   *module,
                                   GstPlugin *plugin);
 
+/* in gstxvid.c */
+extern gchar * gst_xvid_error (int errorcode);
+
 #ifdef __cplusplus
 }
 #endif /* __cplusplus */