Commit b3011fac authored by David Schleef's avatar David Schleef
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examples/dynparams/Makefile.am: Move demo-dparams from gst/sine to...

examples/dynparams/Makefile.am: Move demo-dparams from gst/sine to examples/dynparams.  Examples do not belong inters...

Original commit message from CVS:
* examples/dynparams/Makefile.am: Move demo-dparams from gst/sine
to examples/dynparams.  Examples do not belong interspersed with
source code.
* examples/dynparams/demo-dparams.c:
* gst/sine/Makefile.am:
* gst/sine/demo-dparams.c:
parent ab06cc8f
2005-04-25 David Schleef <ds@schleef.org>
* examples/dynparams/Makefile.am: Move demo-dparams from gst/sine
to examples/dynparams. Examples do not belong interspersed with
source code.
* examples/dynparams/demo-dparams.c:
* gst/sine/Makefile.am:
* gst/sine/demo-dparams.c:
2005-04-25 David Schleef <ds@schleef.org>
 
Don't use GST_PLUGIN_LDFLAGS, because these aren't plugins.
......
examples = filter
examples = filter demo-dparams
noinst_PROGRAMS = $(examples)
# we have nothing but apps here, we can do this safely
LIBS = $(GST_LIBS) $(GTK_LIBS) $(GST_CONTROL_LIBS)
AM_CFLAGS = $(GST_CFLAGS) $(GTK_CFLAGS)
......@@ -8,11 +8,3 @@ libgstsinesrc_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
noinst_HEADERS = gstsinesrc.h
if HAVE_GTK
noinst_PROGRAMS = demo_dparams
endif
demo_dparams_SOURCES = demo-dparams.c
## putting GTK in front solves a bad compilation problem
demo_dparams_CFLAGS = $(GTK_CFLAGS) $(GST_CFLAGS)
demo_dparams_LDFLAGS = $(GST_LIBS) $(GTK_LIBS) $(GST_CONTROL_LIBS)
examples = filter
examples = filter demo-dparams
noinst_PROGRAMS = $(examples)
# we have nothing but apps here, we can do this safely
LIBS = $(GST_LIBS) $(GTK_LIBS) $(GST_CONTROL_LIBS)
AM_CFLAGS = $(GST_CFLAGS) $(GTK_CFLAGS)
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <string.h>
#include <math.h>
#include <gtk/gtk.h>
#include <gst/gst.h>
#include <gst/control/control.h>
#define ZERO(mem) memset(&mem, 0, sizeof(mem))
static gint
quit_live (GtkWidget * window, GdkEventAny * e, gpointer data)
{
gtk_main_quit ();
return FALSE;
}
static void
dynparm_log_value_changed (GtkAdjustment * adj, GstDParam * dparam)
{
gdouble value;
g_return_if_fail (dparam != NULL);
g_return_if_fail (GST_IS_DPARAM (dparam));
value = exp (adj->value);
g_print ("setting value to %f\n", value);
g_object_set (G_OBJECT (dparam), "value_double", value, NULL);
}
static void
dynparm_value_changed (GtkAdjustment * adj, GstDParam * dparam)
{
g_return_if_fail (dparam != NULL);
g_return_if_fail (GST_IS_DPARAM (dparam));
g_print ("setting value to %f\n", adj->value);
g_object_set (G_OBJECT (dparam), "value_double", (gdouble) adj->value, NULL);
}
int
main (int argc, char *argv[])
{
GtkWidget *window;
GtkWidget *hbox;
GtkAdjustment *volume_adj;
GtkAdjustment *freq_adj;
GtkWidget *volume_slider;
GtkWidget *freq_slider;
GstElement *thread, *sinesrc, *volfilter, *audiosink;
GstDParamManager *dpman;
GstDParam *volume;
GstDParam *freq;
GParamSpecDouble *spec;
gtk_init (&argc, &argv);
gst_init (&argc, &argv);
gst_control_init (&argc, &argv);
/***** construct the pipeline *****/
g_print ("creating elements\n");
thread = gst_thread_new ("live-example");
sinesrc = gst_element_factory_make ("sinesrc", "sine-source");
audiosink = gst_element_factory_make (DEFAULT_AUDIOSINK, "sound-sink");
volfilter = gst_element_factory_make ("volume", "volume-filter");
gst_bin_add_many (GST_BIN (thread), sinesrc, volfilter, audiosink, NULL);
gst_element_link_many (sinesrc, volfilter, audiosink, NULL);
/* this breaks with current alsa oss compat lib */
g_object_set (G_OBJECT (audiosink), "fragment", 0x00180008, NULL);
g_object_set (G_OBJECT (audiosink), "sync", FALSE, NULL);
g_object_set (G_OBJECT (sinesrc), "samplesperbuffer", 1024, NULL);
/***** set up the GUI *****/
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_default_size (GTK_WINDOW (window), 80, 400);
g_signal_connect (window, "delete_event", GTK_SIGNAL_FUNC (quit_live), NULL);
hbox = gtk_hbox_new (TRUE, 0);
gtk_container_add (GTK_CONTAINER (window), hbox);
/***** set up the dparams *****/
freq = gst_dpsmooth_new (G_TYPE_DOUBLE);
g_object_set (G_OBJECT (freq), "update_period", 2000000LL, NULL);
/* this defines the maximum slope that this *
* param can change. This says that in 50ms *
* the value can change by a maximum of one semitone *
* (the log of one semitone is 0.693) */
g_object_set (G_OBJECT (freq), "slope_delta_double", 0.693, NULL);
g_object_set (G_OBJECT (freq), "slope_time", 50000000LL, NULL);
dpman = gst_dpman_get_manager (sinesrc);
if (!gst_dpman_attach_dparam (dpman, "freq", freq))
g_assert_not_reached ();
gst_dpman_set_mode (dpman, "asynchronous");
spec = (GParamSpecDouble *) gst_dpman_get_param_spec (dpman, "freq");
freq_adj = (GtkAdjustment *) gtk_adjustment_new (log (spec->default_value),
log (spec->minimum), log (spec->maximum), 0.1, 0.01, 0.01);
freq_slider = gtk_vscale_new (freq_adj);
gtk_scale_set_digits (GTK_SCALE (freq_slider), 2);
gtk_box_pack_start (GTK_BOX (hbox), freq_slider, TRUE, TRUE, 0);
volume = gst_dpsmooth_new (G_TYPE_DOUBLE);
g_object_set (G_OBJECT (volume), "update_period", 2000000LL, NULL);
/* 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_double", 0.1, NULL);
g_object_set (G_OBJECT (volume), "slope_time", 50000000LL, NULL);
dpman = gst_dpman_get_manager (volfilter);
if (!gst_dpman_attach_dparam (dpman, "volume", volume))
g_assert_not_reached ();
gst_dpman_set_mode (dpman, "asynchronous");
g_object_set (G_OBJECT (volfilter), "mute", FALSE, NULL);
spec = (GParamSpecDouble *) gst_dpman_get_param_spec (dpman, "volume");
volume_adj =
(GtkAdjustment *) gtk_adjustment_new (spec->default_value, 0.0, 1.2, 0.1,
0.01, 0.01);
volume_slider = gtk_vscale_new (volume_adj);
gtk_scale_set_digits (GTK_SCALE (volume_slider), 2);
gtk_box_pack_start (GTK_BOX (hbox), volume_slider, TRUE, TRUE, 0);
/***** set up the handlers and such *****/
/*gtk_signal_connect(volume_adj,"value-changed",GTK_SIGNAL_FUNC(volume_changed),sinesrc); */
g_signal_connect (volume_adj, "value-changed",
GTK_SIGNAL_FUNC (dynparm_value_changed), volume);
g_signal_connect (freq_adj, "value-changed",
GTK_SIGNAL_FUNC (dynparm_log_value_changed), freq);
gtk_adjustment_value_changed (volume_adj);
gtk_adjustment_value_changed (freq_adj);
g_print ("starting pipeline\n");
/***** start everything up *****/
gst_element_set_state (thread, GST_STATE_PLAYING);
gtk_widget_show_all (window);
gtk_main ();
return 0;
}
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