+ further mucking about with the playondemand filter

Original commit message from CVS:
+ further mucking about with the playondemand filter

4 files changed, 57 insertions, 64 deletions

diff --git a/gst/playondemand/demo-mp3.c b/gst/playondemand/demo-mp3.c
index 7161aae4..6e404a15 100644
--- a/gst/playondemand/demo-mp3.c
+++ b/gst/playondemand/demo-mp3.c
@@ -4,13 +4,14 @@
 #include <gst/gst.h>
 
 #define NUM_BEATS 12
+#define TICK_RATE(x) (x * 1e-6)
 
 GtkWidget *window, *vbox, *beat_box, *button_box;
 GtkWidget *play_button, *clear_button, *reset_button, *quit_button;
 GtkWidget **beat_button;
 GtkWidget *speed_scale;
 GtkObject *speed_adj;
-GstElement *src, *mad, *conv, *pod, *sink, *pipeline;
+GstElement *src, *dec, *pod, *sink, *pipeline;
 GstClock *element_clock;
 guint32 *beats;
 
@@ -63,36 +64,33 @@ beat (GtkToggleButton *button, gpointer data)
 void
 speed (GtkAdjustment *adjustment, gpointer data)
 {
-  g_signal_stop_emission_by_name(G_OBJECT(pod), "deep-notify");
-  g_object_set(G_OBJECT(pod), "tick-rate", adjustment->value, NULL);
+  /*g_signal_stop_emission_by_name(G_OBJECT(pod), "deep-notify");*/
+  g_object_set(G_OBJECT(pod), "tick-rate", TICK_RATE(adjustment->value), NULL);
   /*gst_clock_set_speed(element_clock, adjustment->value);*/
 }
 
 void
 setup_pipeline (gchar *filename)
 {
-  src = gst_element_factory_make("filesrc", "filesrc");
-  mad = gst_element_factory_make("mad", "mad");
-  conv = gst_element_factory_make("audioconvert", "audioconvert");
-  pod = gst_element_factory_make("playondemand", "playondemand");
-  sink = gst_element_factory_make("alsasink", "alsasink");
+  src = gst_element_factory_make("filesrc", "source");
+  dec = gst_element_factory_make("vorbisfile", "decoder");
+  pod = gst_element_factory_make("playondemand", "sequencer");
+  sink = gst_element_factory_make("alsasink", "sink");
 
-  g_object_set(G_OBJECT(src), "location", filename, NULL);
-  g_object_set(G_OBJECT(sink), "period-count", 64,
-                               "period-size", 512, NULL);
-  g_object_set(G_OBJECT(pod), "total-ticks", NUM_BEATS,
-                              "tick-rate", 1.0,
-                              "max-plays", NUM_BEATS * 2, NULL);
+  g_object_set(G_OBJECT (src), "location", filename, NULL);
+  g_object_set(G_OBJECT (sink), "period-count", 64, "period-size", 512, NULL);
+  g_object_set(G_OBJECT (pod), "total-ticks", NUM_BEATS,
+               "tick-rate", 1.0e-6, "max-plays", NUM_BEATS * 2, NULL);
 
-  g_object_get(G_OBJECT(pod), "ticks", &beats, NULL);
+  g_object_get(G_OBJECT (pod), "ticks", &beats, NULL);
 
   pipeline = gst_pipeline_new("app");
 
-  gst_bin_add_many(GST_BIN(pipeline), src, mad, conv, pod, sink, NULL);
-  gst_element_link_many(src, mad, conv, pod, sink, NULL);
+  gst_bin_add_many(GST_BIN (pipeline), src, dec, pod, sink, NULL);
+  gst_element_link_many(src, dec, pod, sink, NULL);
 
-  element_clock = gst_bin_get_clock(GST_BIN(pipeline));
-  gst_element_set_clock(GST_ELEMENT(pod), element_clock);
+  element_clock = gst_element_get_clock(GST_ELEMENT (sink));
+  gst_element_set_clock(GST_ELEMENT (pod), element_clock);
 }
 
 void
diff --git a/gst/playondemand/filter.func b/gst/playondemand/filter.func
index a07edf4e..3f2755a0 100644
--- a/gst/playondemand/filter.func
+++ b/gst/playondemand/filter.func
@@ -6,37 +6,36 @@ filter_data = (_TYPE_ *) filter->buffer;
 num_filter = filter->buffer_bytes / sizeof(_TYPE_);
 
 do {
-  if (in == NULL && ! filter->eos) in = GST_BUFFER (gst_pad_pull(filter->sinkpad));
-
-  /****************************************************************************/
   /* see if we've got any events coming through ... */
 
-  while (! filter->eos && GST_IS_EVENT(in)) {
-    if (GST_EVENT_TYPE(in) == GST_EVENT_EOS) {
-      gst_event_unref(in);
-      gst_buffer_free(in);
+  while (! filter->eos && in != NULL && GST_IS_EVENT (in)) {
+    GstEvent *event = GST_EVENT (in);
+    if (GST_EVENT_TYPE (event) == GST_EVENT_EOS) {
+      gst_event_unref (event);
+      gst_data_free (in);
+      in = NULL;
       filter->eos = TRUE;
-    } else if ((GST_EVENT_TYPE(in) == GST_EVENT_SEEK) ||
-               (GST_EVENT_TYPE(in) == GST_EVENT_FLUSH)) {
-      gst_event_unref(in);
-      gst_buffer_free(in);
+    } else if ((GST_EVENT_TYPE (event) == GST_EVENT_DISCONTINUOUS) ||
+               (GST_EVENT_TYPE (event) == GST_EVENT_FLUSH)) {
+      gst_event_unref (event);
+      gst_data_free (in);
+      in = NULL;
       filter->eos = FALSE;
       filter->write = 0;
     } else {
-      gst_pad_push(filter->srcpad, GST_DATA (in));
+      gst_pad_push(filter->srcpad, in);
     }
 
-    in = GST_BUFFER (gst_pad_pull(filter->sinkpad));
+    in = (in == NULL && ! filter->eos) ? gst_pad_pull(filter->sinkpad) : NULL;
   }
 
-  /****************************************************************************/
   /* handle data from the input buffer. */
 
   if (! filter->eos) {
     register guint j, w = filter->write;
 
-    data_in = (_TYPE_ *) GST_BUFFER_DATA(in);
-    num_in = GST_BUFFER_SIZE(in) / sizeof(_TYPE_);
+    data_in = (_TYPE_ *) GST_BUFFER_DATA (GST_BUFFER (in));
+    num_in = GST_BUFFER_SIZE (in) / sizeof(_TYPE_);
 
     for (j = 0; (j < num_in) && (w+j < num_filter); j++)
       filter_data[w+j] = data_in[j];
@@ -45,14 +44,13 @@ do {
 
     if (filter->write >= num_filter) filter->eos = TRUE;
 
-    out = in;
+    out = GST_BUFFER (in);
   } else {
     out = gst_buffer_new_from_pool(filter->bufpool, 0, 0);
   }
 
   in = NULL;
 
-  /****************************************************************************/
   /* check to see if we have to add new play pointers. */
 
   if (filter->clock) {
@@ -60,12 +58,8 @@ do {
 
     guint total_ticks = filter->total_ticks;
     guint current_tick = \
-      ((guint) (gst_clock_get_time(filter->clock) * filter->tick_rate /
-                GST_SECOND)) % total_ticks;
-
-    /* for some reason modulo arithmetic isn't working for me here, i suspect
-       some unsigned/signed voodoo. but it's probably safe to do this with an if
-       statement since it doesn't happen all that often ... */
+      ((guint) (gst_clock_get_time(filter->clock) * \
+                filter->tick_rate / GST_SECOND)) % total_ticks;
 
     tick_offset = current_tick - last_tick;
     if (tick_offset < 0) tick_offset += total_ticks;
@@ -84,14 +78,13 @@ do {
     last_tick = current_tick;
   }
 
-  /****************************************************************************/
   /* handle output data. */
 
   {
     register guint k, p;
 
-    data_out = (_TYPE_ *) GST_BUFFER_DATA(out);
-    num_out = GST_BUFFER_SIZE(out) / sizeof(_TYPE_);
+    data_out = (_TYPE_ *) GST_BUFFER_DATA (out);
+    num_out = GST_BUFFER_SIZE (out) / sizeof(_TYPE_);
 
     for (k = 0; k < num_out; k++) data_out[k] = zero;
 
@@ -111,11 +104,12 @@ do {
     }
   }
 
-  /****************************************************************************/
-  /* push out the buffer. */
+  /* push out the buffer and get a new buffer if we're allowed to loop. */
 
   gst_pad_push(filter->srcpad, GST_DATA (out));
 
   if (gst_element_interrupt (GST_ELEMENT (filter))) break;
 
+  in = (in == NULL && ! filter->eos) ? gst_pad_pull(filter->sinkpad) : NULL;
+
 } while (TRUE);
diff --git a/gst/playondemand/gstplayondemand.c b/gst/playondemand/gstplayondemand.c
index afac7bdd..0c06bbd2 100644
--- a/gst/playondemand/gstplayondemand.c
+++ b/gst/playondemand/gstplayondemand.c
@@ -44,9 +44,9 @@
 /* element factory information */
 static GstElementDetails play_on_demand_details = {
   "Play On Demand",
-  "Filter/Audio/Effect",
-  "Plays a stream at specific times, or when it receives a signal",
-  "Leif Morgan Johnson <leif@ambient.2y.net>"
+  "Filter/Editor/Audio",
+  "Schedule a stream to play at specific times, or when a signal is received",
+  "Leif Morgan Johnson <leif@ambient.2y.net>",
 };
 
 
@@ -218,18 +218,23 @@ play_on_demand_class_init (GstPlayOnDemandClass *klass)
   g_object_class_install_property(G_OBJECT_CLASS(klass), PROP_MUTE,
     g_param_spec_boolean("mute", "Silence output", "Do not output any sound",
                          FALSE, G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
+
   g_object_class_install_property(G_OBJECT_CLASS(klass), PROP_BUFFER_TIME,
     g_param_spec_float("buffer-time", "Buffer length in seconds", "Number of seconds of audio the buffer holds",
                        0.0, G_MAXFLOAT, GST_POD_BUFFER_TIME, G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
+
   g_object_class_install_property(G_OBJECT_CLASS(klass), PROP_MAX_PLAYS,
     g_param_spec_uint("max-plays", "Maximum simultaneous playbacks", "Maximum allowed number of simultaneous plays from the buffer",
                       1, G_MAXUINT, GST_POD_MAX_PLAYS, G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
+
   g_object_class_install_property(G_OBJECT_CLASS(klass), PROP_TICK_RATE,
     g_param_spec_float("tick-rate", "Tick rate (ticks/second)", "The rate of musical ticks, the smallest time unit in a song",
                        0, G_MAXFLOAT, GST_POD_TICK_RATE, G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
+
   g_object_class_install_property(G_OBJECT_CLASS(klass), PROP_TOTAL_TICKS,
     g_param_spec_uint("total-ticks", "Total number of ticks", "Total number of ticks in the tick array",
                       1, G_MAXUINT, 1, G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
+
   g_object_class_install_property(G_OBJECT_CLASS(klass), PROP_TICKS,
     g_param_spec_pointer("ticks", "Ticks to play sample on", "An array of ticks (musical times) at which to play the sample",
 			 G_PARAM_READWRITE));
@@ -430,7 +435,8 @@ play_on_demand_loop (GstElement *elem)
 {
   GstPlayOnDemand *filter = GST_PLAYONDEMAND(elem);
   guint            num_in, num_out, num_filter;
-  GstBuffer       *in, *out;
+  GstData         *in = NULL;
+  GstBuffer       *out = NULL;
   static guint     last_tick = 0;
 
   g_return_if_fail(filter != NULL);
@@ -442,7 +448,7 @@ play_on_demand_loop (GstElement *elem)
     filter->bufpool = gst_buffer_pool_get_default(GST_POD_BUFPOOL_SIZE,
                                                   GST_POD_BUFPOOL_NUM);
 
-  in = GST_BUFFER (gst_pad_pull(filter->sinkpad));
+  in = (in == NULL && ! filter->eos) ? gst_pad_pull(filter->sinkpad) : NULL;
 
   if (filter->format == GST_PLAYONDEMAND_FORMAT_INT) {
     if (filter->width == 16) {
diff --git a/gst/playondemand/gstplayondemand.h b/gst/playondemand/gstplayondemand.h
index b73b5c2a..8c7fa212 100644
--- a/gst/playondemand/gstplayondemand.h
+++ b/gst/playondemand/gstplayondemand.h
@@ -22,21 +22,20 @@
 #ifndef __GST_PLAYONDEMAND_H__
 #define __GST_PLAYONDEMAND_H__
 
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif
 
 #include <gst/gst.h>
 
-
-#ifdef __cplusplus
-extern "C" {
-#endif /* __cplusplus */
-
+G_BEGIN_DECLS
 
 #define GST_TYPE_PLAYONDEMAND \
   (gst_play_on_demand_get_type())
 #define GST_PLAYONDEMAND(obj) \
   (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_PLAYONDEMAND,GstPlayOnDemand))
 #define GST_PLAYONDEMAND_CLASS(klass) \
-  (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_ULAW,GstPlayOnDemand))
+  (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_PLAYONDEMAND,GstPlayOnDemand))
 #define GST_IS_PLAYONDEMAND(obj) \
   (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_PLAYONDEMAND))
 #define GST_IS_PLAYONDEMAND_CLASS(obj) \
@@ -94,10 +93,6 @@ struct _GstPlayOnDemandClass {
 
 GType gst_play_on_demand_get_type(void);
 
-
-#ifdef __cplusplus
-}
-#endif /* __cplusplus */
-
+G_END_DECLS
 
 #endif /* __GST_PLAYONDEMAND_H__ */