From 6ad042fadadf30e71ea4180755965a3058c35b51 Mon Sep 17 00:00:00 2001
From: Steve Baker <steve@stevebaker.org>
Date: Wed, 29 May 2002 18:54:19 +0000
Subject: [PATCH] use new dparams api. run demo_dparams to hear how smooth it
 is now

Original commit message from CVS:
use new dparams api. run demo_dparams to hear how smooth it is now
---
 gst/sine/demo-dparams.c |  9 +++++----
 gst/sine/gstsinesrc.c   | 16 +++++++++-------
 2 files changed, 14 insertions(+), 11 deletions(-)

diff --git a/gst/sine/demo-dparams.c b/gst/sine/demo-dparams.c
index 344acd6e40..09b67e7a46 100644
--- a/gst/sine/demo-dparams.c
+++ b/gst/sine/demo-dparams.c
@@ -62,8 +62,9 @@ int main(int argc,char *argv[]) {
   gst_element_connect_many(sinesrc, volfilter, osssink, NULL);
   /* this breaks with current alsa oss compat lib */
   g_object_set(G_OBJECT(osssink),"fragment",0x00180008,NULL);
+  g_object_set(G_OBJECT(osssink),"sync",FALSE,NULL);
 
-  g_object_set(G_OBJECT(sinesrc),"samplesperbuffer",64,NULL);
+  g_object_set(G_OBJECT(sinesrc),"samplesperbuffer",1024,NULL);
   
   /***** set up the GUI *****/
   window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
@@ -87,7 +88,7 @@ int main(int argc,char *argv[]) {
   
   dpman = gst_dpman_get_manager (sinesrc);
   g_assert(gst_dpman_attach_dparam (dpman, "freq", freq));
-  gst_dpman_set_mode(dpman, "synchronous");
+  gst_dpman_set_mode(dpman, "asynchronous");
   
   spec = (GParamSpecFloat*)gst_dpman_get_param_spec (dpman, "freq");
   freq_adj = (GtkAdjustment*)gtk_adjustment_new((gfloat)log(spec->default_value), 
@@ -106,12 +107,12 @@ int main(int argc,char *argv[]) {
   /* this defines the maximum slope that this *
   * param can change.  This says that in 50ms *
   * the value can change from 0.0 to 1.0 */
-  g_object_set(G_OBJECT(volume), "slope_delta_float", 1.0F, NULL);
+  g_object_set(G_OBJECT(volume), "slope_delta_float", 0.1F, NULL);
   g_object_set(G_OBJECT(volume), "slope_time", 50000000LL, NULL); 
   
   dpman = gst_dpman_get_manager (volfilter);
   g_assert(gst_dpman_attach_dparam (dpman, "volume", volume));
-  gst_dpman_set_mode(dpman, "synchronous");
+  gst_dpman_set_mode(dpman, "asynchronous");
   
   g_object_set(G_OBJECT(volfilter), "mute", FALSE, NULL);
 
diff --git a/gst/sine/gstsinesrc.c b/gst/sine/gstsinesrc.c
index 8ae961d2d5..807a30dff2 100644
--- a/gst/sine/gstsinesrc.c
+++ b/gst/sine/gstsinesrc.c
@@ -196,8 +196,8 @@ gst_sinesrc_init (GstSineSrc *src)
     &(src->volume)
   );
   
-  gst_dpman_set_rate_change_pad(src->dpman, src->srcpad);
-  
+  gst_dpman_set_rate(src->dpman, src->samplerate);
+
   gst_sinesrc_populate_sinetable(src);
   gst_sinesrc_update_table_inc(src);
 
@@ -210,7 +210,7 @@ gst_sinesrc_get(GstPad *pad)
   GstBuffer *buf;
   
   gint16 *samples;
-  gint i=0, frame_countdown;
+  gint i=0;
   
   g_return_val_if_fail (pad != NULL, NULL);
   src = GST_SINESRC(gst_pad_get_parent (pad));
@@ -224,12 +224,12 @@ gst_sinesrc_get(GstPad *pad)
 
   samples = (gint16*)GST_BUFFER_DATA(buf);
   GST_BUFFER_DATA(buf) = (gpointer) samples;
-  
-  frame_countdown = GST_DPMAN_PREPROCESS(src->dpman, src->samples_per_buffer, src->timestamp);
+
+  GST_DPMAN_PREPROCESS(src->dpman, src->samples_per_buffer, src->timestamp);
   
   src->timestamp += (gint64)src->samples_per_buffer * 1000000000LL / (gint64)src->samplerate;
    
-  while(GST_DPMAN_PROCESS_COUNTDOWN(src->dpman, frame_countdown, i)) {
+  while(GST_DPMAN_PROCESS(src->dpman, i)) {
 
     src->table_lookup = (gint)(src->table_pos);
     src->table_lookup_next = src->table_lookup + 1;
@@ -251,12 +251,13 @@ gst_sinesrc_get(GstPad *pad)
     /*               * src->volume * 32767.0; */
 
     /*linear interpolation */
-    samples[i++] = ((src->table_interp
+    samples[i] = ((src->table_interp
                    *(src->table_data[src->table_lookup_next]
                     -src->table_data[src->table_lookup]
                     )
                   )+src->table_data[src->table_lookup]
                  )* src->volume * 32767.0;
+    i++;
   }
 
   
@@ -282,6 +283,7 @@ gst_sinesrc_set_property (GObject *object, guint prop_id, const GValue *value, G
       break;
     case ARG_SAMPLERATE:
       src->samplerate = g_value_get_int (value);
+      gst_dpman_set_rate(src->dpman, src->samplerate);
       src->newcaps=TRUE;
       gst_sinesrc_update_table_inc(src);
       break;