Updated mpeg seeking example

Original commit message from CVS:
Updated mpeg seeking example

examples/indexing/indexmpeg.c

@@ -20,6 +20,9 @@
 #include <string.h>
 #include <gst/gst.h>
 
+static gboolean verbose = FALSE;
+static gboolean quiet = FALSE;
+
 static void
 entry_added (GstIndex *index, GstIndexEntry *entry)
 {
@@ -56,6 +59,7 @@ typedef struct
   GstPad        *target;
   GstElement    *bin;
   GstElement    *pipeline;
+  GstIndex      *index;
 } dyn_connect;
 
 static void
@@ -67,6 +71,7 @@ dynamic_connect (GstPadTemplate *templ, GstPad *newpad, gpointer data)
     gst_element_set_state (connect->pipeline, GST_STATE_PAUSED);
     gst_bin_add (GST_BIN (connect->pipeline), connect->bin);
     gst_pad_connect (newpad, connect->target);
+    gst_element_set_index (connect->bin, connect->index);
     gst_element_set_state (connect->pipeline, GST_STATE_PLAYING);
   }
 }
@@ -76,7 +81,8 @@ setup_dynamic_connection (GstElement *pipeline,
 		          GstElement *element, 
 			  const gchar *padname, 
 			  GstPad *target, 
-			  GstElement *bin)
+			  GstElement *bin,
+			  GstIndex *index)
 {
   dyn_connect *connect;
 
@@ -85,16 +91,16 @@ setup_dynamic_connection (GstElement *pipeline,
   connect->target       = target;
   connect->bin          = bin;
   connect->pipeline     = pipeline;
+  connect->index     	= index;
 
   g_signal_connect (G_OBJECT (element), "new_pad", G_CALLBACK (dynamic_connect), connect);
 }
 
 static GstElement*
-make_mpeg_systems_pipeline (const gchar *path)
+make_mpeg_systems_pipeline (const gchar *path, GstIndex *index)
 {
   GstElement *pipeline;
   GstElement *src, *demux;
-  GstIndex *index;
 
   pipeline = gst_pipeline_new ("pipeline");
 
@@ -106,9 +112,9 @@ make_mpeg_systems_pipeline (const gchar *path)
   gst_bin_add (GST_BIN (pipeline), src);
   gst_bin_add (GST_BIN (pipeline), demux);
 
-  index = gst_index_factory_make ("memindex");
+  if (index) {
-  g_signal_connect (G_OBJECT (index), "entry_added", G_CALLBACK (entry_added), NULL);
+    gst_element_set_index (pipeline, index);
-  gst_element_set_index (demux, index);
+  }
 
   gst_element_connect_pads (src, "src", demux, "sink");
   
@@ -116,11 +122,10 @@ make_mpeg_systems_pipeline (const gchar *path)
 }
 
 static GstElement*
-make_mpeg_decoder_pipeline (const gchar *path)
+make_mpeg_decoder_pipeline (const gchar *path, GstIndex *index)
 {
   GstElement *pipeline;
   GstElement *src, *demux;
-  GstIndex *index;
   GstElement *video_bin, *audio_bin;
   GstElement *video_decoder, *audio_decoder;
 
@@ -143,55 +148,142 @@ make_mpeg_decoder_pipeline (const gchar *path)
   
   setup_dynamic_connection (pipeline, demux, "video_00", 
 		            gst_element_get_pad (video_decoder, "sink"),
-			    video_bin);
+			    video_bin, index);
 
   audio_bin = gst_bin_new ("audio_bin");
   audio_decoder = gst_element_factory_make ("mad", "audio_decoder");
 
   gst_bin_add (GST_BIN (audio_bin), audio_decoder);
 
-  index = gst_index_factory_make ("memindex");
+  if (index) {
-  g_signal_connect (G_OBJECT (index), "entry_added", G_CALLBACK (entry_added), NULL);
+    gst_element_set_index (pipeline, index);
-  gst_element_set_index (demux, index);
+  }
-  gst_element_set_index (video_decoder, index);
   
   return pipeline;
 }
 
+static void
+print_progress (GstPad *pad)
+{
+  gint i = 0;
+  gchar status[53];
+  GstFormat format;
+  gboolean res;
+  gint64 value;
+  gint percent = 0;
+
+  status[0] = '|';
+
+  format = GST_FORMAT_PERCENT;
+  res = gst_pad_query (pad, GST_PAD_QUERY_POSITION, &format, &value);
+  if (res) {
+    percent = value / (2 * GST_FORMAT_PERCENT_SCALE); 
+  }
+  
+  for (i = 0; i < percent; i++) {
+    status[i+1] = '=';
+  }
+  for (i = percent; i < 50; i++) {
+    status[i+1] = ' ';
+  }
+  status[51] = '|';
+  status[52] = 0;
+
+  g_print ("%s\r", status);
+}
+
 gint 
 main (gint argc, gchar *argv[])
 {
   GstElement *pipeline;
-  
+  GstElement *src;
-  gst_init (&argc, &argv);
+  GstPad *pad;
+  GstIndex *index;
+  gint count = 0;
+  GstEvent *event;
+  gboolean res;
+  gint i;
+  struct poptOption options[] = {
+    { "verbose",  'v',  POPT_ARG_NONE|POPT_ARGFLAG_STRIP,   &verbose,   0,
+      "Print index entries", NULL},
+    { "quiet",  'q',  POPT_ARG_NONE|POPT_ARGFLAG_STRIP,   &quiet,   0,
+      "don't print progress bar", NULL},
+      POPT_TABLEEND
+    };
 
-  if (argc < 3) {
+  if (!gst_init_with_popt_table (&argc, &argv, options) || argc < 3) {
-    g_print ("usage: %s <type> <filename>  \n" 
+    g_print ("usage: %s [-v] <type> <filename>  \n" 
 	     "  type can be: 0 mpeg_systems\n"
-	     "               1 mpeg_decoder\n", argv[0]);
+	     "               1 mpeg_decoder\n"
+	     "  -v : report added index entries\n"
+	     "  -q : don't print progress\n" , argv[0]);
     return -1;
   }
 
+  /* create index that elements can fill */
+  index = gst_index_factory_make ("memindex");
+  if (verbose)
+    g_signal_connect (G_OBJECT (index), "entry_added", G_CALLBACK (entry_added), NULL);
+
+  /* construct pipeline */
   switch (atoi (argv[1])) {
     case 0:
-      pipeline = make_mpeg_systems_pipeline (argv[2]);
+      pipeline = make_mpeg_systems_pipeline (argv[2], index);
       break;
     case 1:
-      pipeline = make_mpeg_decoder_pipeline (argv[2]);
+      pipeline = make_mpeg_decoder_pipeline (argv[2], index);
       break;
     default:
       g_print ("unkown type %d\n", atoi (argv[1]));
       return -1;
   }
 
+  /* setup some default info/error handlers */
   g_signal_connect (G_OBJECT (pipeline), "deep_notify", 
 		    G_CALLBACK (gst_element_default_deep_notify), NULL);
   g_signal_connect (G_OBJECT (pipeline), "error", 
 		    G_CALLBACK (gst_element_default_error), NULL);
 
+  /* get a pad to perform progress reporting on */
+  src = gst_bin_get_by_name (GST_BIN (pipeline), "src");
+  pad = gst_element_get_pad (src, "src");
+
+  /* prepare for iteration */
   gst_element_set_state (pipeline, GST_STATE_PLAYING);
 
-  while (gst_bin_iterate (GST_BIN (pipeline)));
+  g_print ("indexing %s...\n", argv [2]);
+  /* run through the complete stream to let it generate an index */
+  while (gst_bin_iterate (GST_BIN (pipeline))) {
+    if (!quiet && (count % 1000 == 0)) {
+      print_progress (pad);
+    }
+    count++;
+  }
+  g_print ("\n");
+
+  /* bring to ready to restart the pipeline */
+  gst_element_set_state (pipeline, GST_STATE_READY);
+  gst_element_set_state (pipeline, GST_STATE_PAUSED);
+
+  GST_FLAG_UNSET (index, GST_INDEX_WRITABLE);
+
+  src = gst_bin_get_by_name (GST_BIN (pipeline), "video_decoder");
+  pad = gst_element_get_pad (src, "src");
+
+  g_print ("seeking %s...\n", argv [2]);
+  event = gst_event_new_seek (GST_FORMAT_TIME |
+                              GST_SEEK_METHOD_SET |
+                              GST_SEEK_FLAG_FLUSH, 1 * GST_SECOND);
+
+  res = gst_pad_send_event (pad, event);
+  if (!res) {
+    g_warning ("seek failed");
+  }
+
+  gst_element_set_state (pipeline, GST_STATE_PLAYING);
+  for (i = 0; i < 100; i++) {
+    gst_bin_iterate (GST_BIN (pipeline));
+  }
 
   gst_element_set_state (pipeline, GST_STATE_NULL);