$(top_builddir)/common/shave \
$(top_builddir)/common/shave-libtool \
$(top_builddir)/gst-libs/gst/audio/testchannels \
+ $(top_builddir)/tests/examples/volume/volume \
$(top_builddir)/tools/gst-discoverer
tests/examples/seek/Makefile
tests/examples/snapshot/Makefile
tests/examples/playrec/Makefile
-tests/examples/volume/Makefile
tests/examples/v4l/Makefile
tests/files/Makefile
tests/icles/Makefile
GIO_SUBDIRS = gio
endif
-SUBDIRS = app audio dynamic $(FT2_SUBDIRS) $(GIO_SUBDIRS) overlay playrec volume v4l encoding
+SUBDIRS = app audio dynamic $(FT2_SUBDIRS) $(GIO_SUBDIRS) overlay playrec v4l encoding
DIST_SUBDIRS = app audio dynamic gio overlay seek snapshot playrec volume v4l encoding
include $(top_srcdir)/common/parallel-subdirs.mak
+
audiomix
testchannels
+volume
if HAVE_GTK
-GTK_EXAMPLES = audiomix
+GTK_EXAMPLES = audiomix volume
else
GTK_EXAMPLES =
endif
audiomix_SOURCES = audiomix.c
audiomix_CFLAGS = $(GST_CFLAGS) $(GTK_CFLAGS) -D_GNU_SOURCE
audiomix_LDADD = $(GST_LIBS) $(GTK_LIBS) $(LIBM)
+
+volume_SOURCES = volume.c
+volume_CFLAGS = $(GST_CFLAGS) $(GTK_CFLAGS) -D_GNU_SOURCE
+volume_LDADD = $(GST_LIBS) $(GTK_LIBS) $(LIBM)
endif
--- /dev/null
+/* GStreamer
+ *
+ * volume.c: sample application to change the volume of a pipeline
+ *
+ * Copyright (C) <2004> Thomas Vander Stichele <thomas at apestaart dot org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <math.h>
+
+#include <gst/gst.h>
+#include <gtk/gtk.h>
+
+/* global pointer for the scale widget */
+static GtkWidget *elapsed;
+static GtkWidget *scale;
+
+#ifndef M_LN10
+#define M_LN10 (log(10.0))
+#endif
+
+static void
+value_changed_callback (GtkWidget * widget, GstElement * volume)
+{
+ gdouble value;
+ gdouble level;
+
+ value = gtk_range_get_value (GTK_RANGE (widget));
+ level = exp (value / 20.0 * M_LN10);
+ g_print ("Value: %f dB, level: %f\n", value, level);
+ g_object_set (volume, "volume", level, NULL);
+}
+
+static void
+setup_gui (GstElement * volume)
+{
+ GtkWidget *window;
+ GtkWidget *vbox;
+ GtkWidget *label, *hbox;
+
+ window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
+ g_signal_connect (window, "destroy", gtk_main_quit, NULL);
+
+ vbox = gtk_vbox_new (TRUE, 0);
+ gtk_container_add (GTK_CONTAINER (window), vbox);
+
+ /* elapsed widget */
+ hbox = gtk_hbox_new (TRUE, 0);
+ label = gtk_label_new ("Elapsed");
+ elapsed = gtk_label_new ("0.000");
+ gtk_container_add (GTK_CONTAINER (hbox), label);
+ gtk_container_add (GTK_CONTAINER (hbox), elapsed);
+ gtk_container_add (GTK_CONTAINER (vbox), hbox);
+
+ /* volume */
+ hbox = gtk_hbox_new (TRUE, 0);
+ label = gtk_label_new ("volume");
+ gtk_container_add (GTK_CONTAINER (hbox), label);
+ scale = gtk_hscale_new_with_range (-90.0, 10.0, 0.2);
+ gtk_range_set_value (GTK_RANGE (scale), 0.0);
+ gtk_widget_set_size_request (scale, 100, -1);
+ gtk_container_add (GTK_CONTAINER (hbox), scale);
+ gtk_container_add (GTK_CONTAINER (vbox), hbox);
+ g_signal_connect (scale, "value-changed",
+ G_CALLBACK (value_changed_callback), volume);
+
+ gtk_widget_show_all (GTK_WIDGET (window));
+}
+
+static void
+message_received (GstBus * bus, GstMessage * message, GstPipeline * pipeline)
+{
+ const GstStructure *s;
+
+ s = gst_message_get_structure (message);
+ g_print ("message from \"%s\" (%s): ",
+ GST_STR_NULL (GST_ELEMENT_NAME (GST_MESSAGE_SRC (message))),
+ gst_message_type_get_name (GST_MESSAGE_TYPE (message)));
+ if (s) {
+ gchar *sstr;
+
+ sstr = gst_structure_to_string (s);
+ g_print ("%s\n", sstr);
+ g_free (sstr);
+ } else {
+ g_print ("no message details\n");
+ }
+}
+
+static void
+eos_message_received (GstBus * bus, GstMessage * message,
+ GstPipeline * pipeline)
+{
+ message_received (bus, message, pipeline);
+ gtk_main_quit ();
+}
+
+int
+main (int argc, char *argv[])
+{
+
+ GstElement *pipeline = NULL;
+
+#ifndef GST_DISABLE_PARSE
+ GError *error = NULL;
+#endif
+ GstElement *volume;
+ GstBus *bus;
+
+#ifdef GST_DISABLE_PARSE
+ g_print ("GStreamer was built without pipeline parsing capabilities.\n");
+ g_print
+ ("Please rebuild GStreamer with pipeline parsing capabilities activated to use this example.\n");
+ return 1;
+#else
+ gst_init (&argc, &argv);
+ gtk_init (&argc, &argv);
+
+ pipeline = gst_parse_launchv ((const gchar **) &argv[1], &error);
+ if (error) {
+ g_print ("pipeline could not be constructed: %s\n", error->message);
+ g_print ("Please give a complete pipeline with a 'volume' element.\n");
+ g_print ("Example: audiotestsrc ! volume ! %s\n", DEFAULT_AUDIOSINK);
+ g_error_free (error);
+ return 1;
+ }
+#endif
+ volume = gst_bin_get_by_name (GST_BIN (pipeline), "volume0");
+ if (volume == NULL) {
+ g_print ("Please give a pipeline with a 'volume' element in it\n");
+ return 1;
+ }
+
+ /* setup message handling */
+ bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline));
+ gst_bus_add_signal_watch_full (bus, G_PRIORITY_HIGH);
+ g_signal_connect (bus, "message::error", (GCallback) message_received,
+ pipeline);
+ g_signal_connect (bus, "message::warning", (GCallback) message_received,
+ pipeline);
+ g_signal_connect (bus, "message::eos", (GCallback) eos_message_received,
+ pipeline);
+
+ /* setup GUI */
+ setup_gui (volume);
+
+ /* go to main loop */
+ gst_element_set_state (pipeline, GST_STATE_PLAYING);
+ gtk_main ();
+ gst_element_set_state (pipeline, GST_STATE_NULL);
+ gst_object_unref (pipeline);
+
+ return 0;
+}
+++ /dev/null
-if HAVE_GTK
-noinst_PROGRAMS = volume
-volume_SOURCES = volume.c
-volume_CFLAGS = $(GST_CFLAGS) $(GTK_CFLAGS) -D_GNU_SOURCE
-volume_LDADD = $(GST_LIBS) $(GTK_LIBS) $(LIBM)
-endif
+++ /dev/null
-/* GStreamer
- *
- * volume.c: sample application to change the volume of a pipeline
- *
- * Copyright (C) <2004> Thomas Vander Stichele <thomas at apestaart dot org>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include <math.h>
-
-#include <gst/gst.h>
-#include <gtk/gtk.h>
-
-/* global pointer for the scale widget */
-static GtkWidget *elapsed;
-static GtkWidget *scale;
-
-#ifndef M_LN10
-#define M_LN10 (log(10.0))
-#endif
-
-static void
-value_changed_callback (GtkWidget * widget, GstElement * volume)
-{
- gdouble value;
- gdouble level;
-
- value = gtk_range_get_value (GTK_RANGE (widget));
- level = exp (value / 20.0 * M_LN10);
- g_print ("Value: %f dB, level: %f\n", value, level);
- g_object_set (volume, "volume", level, NULL);
-}
-
-static void
-setup_gui (GstElement * volume)
-{
- GtkWidget *window;
- GtkWidget *vbox;
- GtkWidget *label, *hbox;
-
- window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
- g_signal_connect (window, "destroy", gtk_main_quit, NULL);
-
- vbox = gtk_vbox_new (TRUE, 0);
- gtk_container_add (GTK_CONTAINER (window), vbox);
-
- /* elapsed widget */
- hbox = gtk_hbox_new (TRUE, 0);
- label = gtk_label_new ("Elapsed");
- elapsed = gtk_label_new ("0.000");
- gtk_container_add (GTK_CONTAINER (hbox), label);
- gtk_container_add (GTK_CONTAINER (hbox), elapsed);
- gtk_container_add (GTK_CONTAINER (vbox), hbox);
-
- /* volume */
- hbox = gtk_hbox_new (TRUE, 0);
- label = gtk_label_new ("volume");
- gtk_container_add (GTK_CONTAINER (hbox), label);
- scale = gtk_hscale_new_with_range (-90.0, 10.0, 0.2);
- gtk_range_set_value (GTK_RANGE (scale), 0.0);
- gtk_widget_set_size_request (scale, 100, -1);
- gtk_container_add (GTK_CONTAINER (hbox), scale);
- gtk_container_add (GTK_CONTAINER (vbox), hbox);
- g_signal_connect (scale, "value-changed",
- G_CALLBACK (value_changed_callback), volume);
-
- gtk_widget_show_all (GTK_WIDGET (window));
-}
-
-static void
-message_received (GstBus * bus, GstMessage * message, GstPipeline * pipeline)
-{
- const GstStructure *s;
-
- s = gst_message_get_structure (message);
- g_print ("message from \"%s\" (%s): ",
- GST_STR_NULL (GST_ELEMENT_NAME (GST_MESSAGE_SRC (message))),
- gst_message_type_get_name (GST_MESSAGE_TYPE (message)));
- if (s) {
- gchar *sstr;
-
- sstr = gst_structure_to_string (s);
- g_print ("%s\n", sstr);
- g_free (sstr);
- } else {
- g_print ("no message details\n");
- }
-}
-
-static void
-eos_message_received (GstBus * bus, GstMessage * message,
- GstPipeline * pipeline)
-{
- message_received (bus, message, pipeline);
- gtk_main_quit ();
-}
-
-int
-main (int argc, char *argv[])
-{
-
- GstElement *pipeline = NULL;
-
-#ifndef GST_DISABLE_PARSE
- GError *error = NULL;
-#endif
- GstElement *volume;
- GstBus *bus;
-
-#ifdef GST_DISABLE_PARSE
- g_print ("GStreamer was built without pipeline parsing capabilities.\n");
- g_print
- ("Please rebuild GStreamer with pipeline parsing capabilities activated to use this example.\n");
- return 1;
-#else
- gst_init (&argc, &argv);
- gtk_init (&argc, &argv);
-
- pipeline = gst_parse_launchv ((const gchar **) &argv[1], &error);
- if (error) {
- g_print ("pipeline could not be constructed: %s\n", error->message);
- g_print ("Please give a complete pipeline with a 'volume' element.\n");
- g_print ("Example: audiotestsrc ! volume ! %s\n", DEFAULT_AUDIOSINK);
- g_error_free (error);
- return 1;
- }
-#endif
- volume = gst_bin_get_by_name (GST_BIN (pipeline), "volume0");
- if (volume == NULL) {
- g_print ("Please give a pipeline with a 'volume' element in it\n");
- return 1;
- }
-
- /* setup message handling */
- bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline));
- gst_bus_add_signal_watch_full (bus, G_PRIORITY_HIGH);
- g_signal_connect (bus, "message::error", (GCallback) message_received,
- pipeline);
- g_signal_connect (bus, "message::warning", (GCallback) message_received,
- pipeline);
- g_signal_connect (bus, "message::eos", (GCallback) eos_message_received,
- pipeline);
-
- /* setup GUI */
- setup_gui (volume);
-
- /* go to main loop */
- gst_element_set_state (pipeline, GST_STATE_PLAYING);
- gtk_main ();
- gst_element_set_state (pipeline, GST_STATE_NULL);
- gst_object_unref (pipeline);
-
- return 0;
-}
projects / platform / upstream / gst-plugins-base.git / commitdiff