Added wav test to seek.c

Original commit message from CVS:
Added wav test to seek.c
Added an example of element query/seek using spider

examples/seeking/Makefile.am

@@ -1,4 +1,4 @@
-examples = seek
+examples = seek spider_seek
 
 noinst_PROGRAMS = $(examples)
 

examples/seeking/seek.c

@@ -57,6 +57,37 @@ setup_dynamic_connection (GstElement *element, const gchar *padname, GstPad *tar
   g_signal_connect (G_OBJECT (element), "new_pad", G_CALLBACK (dynamic_connect), connect);
 }
 
+static GstElement*
+make_wav_pipeline (const gchar *location) 
+{
+  GstElement *pipeline;
+  GstElement *src, *decoder, *audiosink;
+  GstPad *seekable;
+  
+  pipeline = gst_pipeline_new ("app");
+
+  src = gst_element_factory_make (SOURCE, "src");
+  decoder = gst_element_factory_make ("wavparse", "decoder");
+  audiosink = gst_element_factory_make ("osssink", "sink");
+  //g_object_set (G_OBJECT (audiosink), "sync", FALSE, NULL);
+
+  g_object_set (G_OBJECT (src), "location", location, NULL);
+
+  gst_bin_add (GST_BIN (pipeline), src);
+  gst_bin_add (GST_BIN (pipeline), decoder);
+  gst_bin_add (GST_BIN (pipeline), audiosink);
+
+  gst_element_connect (src, decoder);
+  gst_element_connect (decoder, audiosink);
+
+  seekable = gst_element_get_pad (decoder, "src");
+  seekable_pads = g_list_prepend (seekable_pads, seekable);
+  rate_pads = g_list_prepend (rate_pads, seekable);
+  rate_pads = g_list_prepend (rate_pads, gst_element_get_pad (decoder, "sink"));
+
+  return pipeline;
+}
+
 static GstElement*
 make_flac_pipeline (const gchar *location) 
 {
@@ -625,6 +656,8 @@ main (int argc, char **argv)
     pipeline = make_sid_pipeline (argv[2]);
   else if (atoi (argv[1]) == 6) 
     pipeline = make_flac_pipeline (argv[2]);
+  else if (atoi (argv[1]) == 7) 
+    pipeline = make_wav_pipeline (argv[2]);
 
   /* initialize gui elements ... */
   window = gtk_window_new (GTK_WINDOW_TOPLEVEL);

examples/seeking/spider_seek.c

@@ -0,0 +1,337 @@
+#include <glib.h>
+#include <gtk/gtk.h>
+#include <gst/gst.h>
+#include <string.h>
+
+static GList *rate_pads = NULL;
+static GList *seekable_elements = NULL;
+
+static GstElement *pipeline;
+static guint64 duration, position;
+static GtkAdjustment *adjustment;
+
+static guint update_id;
+
+#define SOURCE "gnomevfssrc"
+//#define SOURCE "filesrc"
+
+#define UPDATE_INTERVAL 500
+
+#define THREAD
+
+static GstElement*
+make_spider_pipeline (const gchar *location) 
+{
+  GstElement *pipeline;
+  GstElement *src, *decoder, *audiosink;
+  GstElement *seekable;
+  
+  pipeline = gst_pipeline_new ("app");
+
+  src = gst_element_factory_make (SOURCE, "src");
+  decoder = gst_element_factory_make ("spider", "decoder");
+  audiosink = gst_element_factory_make ("osssink", "sink");
+  //g_object_set (G_OBJECT (audiosink), "sync", FALSE, NULL);
+
+  g_object_set (G_OBJECT (src), "location", location, NULL);
+
+  gst_bin_add (GST_BIN (pipeline), src);
+  gst_bin_add (GST_BIN (pipeline), decoder);
+  gst_bin_add (GST_BIN (pipeline), audiosink);
+
+  gst_element_connect (src, decoder);
+  gst_element_connect (decoder, audiosink);
+
+  seekable = audiosink;
+  seekable_elements = g_list_prepend (seekable_elements, seekable);
+  rate_pads = g_list_prepend (rate_pads, gst_element_get_pad (audiosink, "sink"));
+
+  return pipeline;
+}
+
+static gchar*
+format_value (GtkScale *scale,
+	      gdouble   value)
+{
+  gint64 real;
+  gint64 seconds;
+  gint64 subseconds;
+
+  real = value * duration / 100;
+  seconds = (gint64) real / GST_SECOND;
+  subseconds = (gint64) real / (GST_SECOND / 100);
+
+  return g_strdup_printf ("%02lld:%02lld:%02lld",
+                          seconds/60, 
+			  seconds%60, 
+			  subseconds%100);
+}
+
+typedef struct
+{
+  const gchar *name;
+  const GstFormat format;
+} seek_format;
+
+static seek_format seek_formats[] = 
+{
+  { "tim",  GST_FORMAT_TIME    },
+  { "byt",  GST_FORMAT_BYTES   },
+  { "unt",  GST_FORMAT_UNITS   },
+  { "buf",  GST_FORMAT_BUFFERS },
+  { "def",  GST_FORMAT_DEFAULT },
+  { NULL, 0 }, 
+};
+
+G_GNUC_UNUSED static void
+query_rates (void)
+{
+  GList *walk = rate_pads;
+
+  while (walk) {
+    GstPad *pad = GST_PAD (walk->data);
+    gint i = 0;
+
+    g_print ("rate/sec  %8.8s: ", GST_PAD_NAME (pad));
+    while (seek_formats[i].name) {
+      gint64 value;
+      GstFormat format;
+
+      format = seek_formats[i].format;
+
+      if (gst_pad_convert (pad, GST_FORMAT_TIME, GST_SECOND, 
+		           &format, &value)) 
+      {
+        g_print ("%s %13lld | ", seek_formats[i].name, value);
+      }
+      else {
+        g_print ("%s %13.13s | ", seek_formats[i].name, "*NA*");
+      }
+
+      i++;
+    }
+    g_print (" %s:%s\n", GST_DEBUG_PAD_NAME (pad));
+
+    walk = g_list_next (walk);
+  }
+}
+
+G_GNUC_UNUSED static void
+query_durations (GstElement *element)
+{
+  gint i = 0;
+
+  g_print ("durations %8.8s: ", GST_ELEMENT_NAME (element));
+  while (seek_formats[i].name) {
+    gboolean res;
+    gint64 value;
+    GstFormat format;
+
+    format = seek_formats[i].format;
+    res = gst_element_query (element, GST_PAD_QUERY_TOTAL, &format, &value);
+    if (res) {
+      g_print ("%s %13lld | ", seek_formats[i].name, value);
+      if (seek_formats[i].format == GST_FORMAT_TIME)
+	duration = value;
+    }
+    else {
+      g_print ("%s %13.13s | ", seek_formats[i].name, "*NA*");
+    }
+    i++;
+  }
+  g_print (" %s\n", GST_ELEMENT_NAME (element));
+}
+
+G_GNUC_UNUSED static void
+query_positions (GstElement *element)
+{
+  gint i = 0;
+
+  g_print ("positions %8.8s: ", GST_ELEMENT_NAME (element));
+  while (seek_formats[i].name) {
+    gboolean res;
+    gint64 value;
+    GstFormat format;
+
+    format = seek_formats[i].format;
+    res = gst_element_query (element, GST_PAD_QUERY_POSITION, &format, &value);
+    if (res) {
+      g_print ("%s %13lld | ", seek_formats[i].name, value);
+      if (seek_formats[i].format == GST_FORMAT_TIME)
+	position = value;
+    }
+    else {
+      g_print ("%s %13.13s | ", seek_formats[i].name, "*NA*");
+    }
+    i++;
+  }
+  g_print (" %s\n", GST_ELEMENT_NAME (element));
+}
+
+static gboolean
+update_scale (gpointer data) 
+{
+  GList *walk = seekable_elements;
+  GstClock *clock;
+
+  clock = gst_bin_get_clock (GST_BIN (pipeline));
+
+  g_print ("clock:                  %13llu  (%s)\n", gst_clock_get_time (clock), gst_object_get_name (GST_OBJECT (clock)));
+
+  while (walk) {
+    GstElement *element = GST_ELEMENT (walk->data);
+
+    query_durations (element);
+    query_positions (element);
+
+    walk = g_list_next (walk);
+  }
+  query_rates ();
+
+  if (duration > 0) {
+    gtk_adjustment_set_value (adjustment, position * 100.0 / duration);
+  }
+
+  return TRUE;
+}
+
+static gboolean
+iterate (gpointer data)
+{
+  gboolean res;
+
+  res = gst_bin_iterate (GST_BIN (data));
+  if (!res) {
+    gtk_timeout_remove (update_id);
+    g_print ("stopping iterations\n");
+  }
+  return res;
+}
+
+static gboolean
+start_seek (GtkWidget *widget, GdkEventButton *event, gpointer user_data)
+{
+  gst_element_set_state (pipeline, GST_STATE_PAUSED);
+  gtk_timeout_remove (update_id);
+
+  return FALSE;
+}
+
+static gboolean
+stop_seek (GtkWidget *widget, GdkEventButton *event, gpointer user_data)
+{
+  gint64 real = gtk_range_get_value (GTK_RANGE (widget)) * duration / 100;
+  gboolean res;
+  GstEvent *s_event;
+  GList *walk = seekable_elements;
+
+  while (walk) {
+    GstElement *seekable = GST_ELEMENT (walk->data);
+
+    g_print ("seek to %lld on element %s\n", real, GST_ELEMENT_NAME (seekable));
+    s_event = gst_event_new_seek (GST_FORMAT_TIME |
+			   	  GST_SEEK_METHOD_SET |
+				  GST_SEEK_FLAG_FLUSH, real);
+
+    res = gst_element_send_event (seekable, s_event);
+    gst_event_free (s_event);
+
+    walk = g_list_next (walk);
+  }
+
+  gst_element_set_state (pipeline, GST_STATE_PLAYING);
+  gtk_idle_add ((GtkFunction) iterate, pipeline);
+  update_id = gtk_timeout_add (UPDATE_INTERVAL, (GtkFunction) update_scale, pipeline);
+
+  return FALSE;
+}
+
+static void
+play_cb (GtkButton * button, gpointer data)
+{
+  if (gst_element_get_state (pipeline) != GST_STATE_PLAYING) {
+    gst_element_set_state (pipeline, GST_STATE_PLAYING);
+    gtk_idle_add ((GtkFunction) iterate, pipeline);
+    update_id = gtk_timeout_add (UPDATE_INTERVAL, (GtkFunction) update_scale, pipeline);
+  }
+}
+
+static void
+pause_cb (GtkButton * button, gpointer data)
+{
+  if (gst_element_get_state (pipeline) != GST_STATE_PAUSED) {
+    gst_element_set_state (pipeline, GST_STATE_PAUSED);
+    gtk_timeout_remove (update_id);
+  }
+}
+
+static void
+stop_cb (GtkButton * button, gpointer data)
+{
+  if (gst_element_get_state (pipeline) != GST_STATE_READY) {
+    gst_element_set_state (pipeline, GST_STATE_READY);
+    gtk_timeout_remove (update_id);
+  }
+}
+
+int
+main (int argc, char **argv)
+{
+  GtkWidget *window, *hbox, *vbox, 
+            *play_button, *pause_button, *stop_button, 
+	    *hscale;
+
+  gst_init (&argc, &argv);
+  gtk_init (&argc, &argv);
+
+  if (argc != 2) {
+    g_print ("usage: %s <filename>\n", argv[0]);
+    exit (-1);
+  }
+
+  pipeline = make_spider_pipeline (argv[1]);
+
+  /* initialize gui elements ... */
+  window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
+  hbox = gtk_hbox_new (FALSE, 0);
+  vbox = gtk_vbox_new (FALSE, 0);
+  play_button = gtk_button_new_with_label ("play");
+  pause_button = gtk_button_new_with_label ("pause");
+  stop_button = gtk_button_new_with_label ("stop");
+
+  adjustment = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.00, 100.0, 0.1, 1.0, 1.0));
+  hscale = gtk_hscale_new (adjustment);
+  gtk_scale_set_digits (GTK_SCALE (hscale), 2);
+  gtk_range_set_update_policy (GTK_RANGE (hscale), GTK_UPDATE_CONTINUOUS);
+
+  gtk_signal_connect(GTK_OBJECT(hscale),
+                             "button_press_event", G_CALLBACK (start_seek), pipeline);
+  gtk_signal_connect(GTK_OBJECT(hscale),
+                             "button_release_event", G_CALLBACK (stop_seek), pipeline);
+  gtk_signal_connect(GTK_OBJECT(hscale),
+                             "format_value", G_CALLBACK (format_value), pipeline);
+
+  /* do the packing stuff ... */
+  gtk_window_set_default_size (GTK_WINDOW (window), 96, 96);
+  gtk_container_add (GTK_CONTAINER (window), vbox);
+  gtk_container_add (GTK_CONTAINER (vbox), hbox);
+  gtk_box_pack_start (GTK_BOX (hbox), play_button, FALSE, FALSE, 2);
+  gtk_box_pack_start (GTK_BOX (hbox), pause_button, FALSE, FALSE, 2);
+  gtk_box_pack_start (GTK_BOX (hbox), stop_button, FALSE, FALSE, 2);
+  gtk_box_pack_start (GTK_BOX (vbox), hscale, TRUE, TRUE, 2);
+
+  /* connect things ... */
+  g_signal_connect (G_OBJECT (play_button), "clicked", G_CALLBACK (play_cb), pipeline);
+  g_signal_connect (G_OBJECT (pause_button), "clicked", G_CALLBACK (pause_cb), pipeline);
+  g_signal_connect (G_OBJECT (stop_button), "clicked", G_CALLBACK (stop_cb), pipeline);
+  g_signal_connect (G_OBJECT (window), "delete_event", gtk_main_quit, NULL);
+
+  /* show the gui. */
+  gtk_widget_show_all (window);
+
+  gtk_main ();
+
+  //g_mem_chunk_info();
+
+  return 0;
+}