[maemo-commits] [maemo-commits] r12593 - projects/tools/trunk/maemo_testing/maemo-examples
From: subversion at stage.maemo.org subversion at stage.maemo.orgDate: Mon Jul 2 14:58:46 EEST 2007
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Author: jampekka
Date: 2007-07-02 14:58:34 +0300 (Mon, 02 Jul 2007)
New Revision: 12593
Added:
projects/tools/trunk/maemo_testing/maemo-examples/example_wavlaunch.c
Log:
Added wavlaunch example
Added: projects/tools/trunk/maemo_testing/maemo-examples/example_wavlaunch.c
===================================================================
--- projects/tools/trunk/maemo_testing/maemo-examples/example_wavlaunch.c 2007-07-02 09:28:43 UTC (rev 12592)
+++ projects/tools/trunk/maemo_testing/maemo-examples/example_wavlaunch.c 2007-07-02 11:58:34 UTC (rev 12593)
@@ -0,0 +1,414 @@
+/**
+ * This file is part of maemo-examples package
+ *
+ * Copyright (c) 2007 Nokia Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE. */
+
+
+#include <hildon-widgets/hildon-app.h>
+#include <hildon-widgets/hildon-appview.h>
+#include <hildon-widgets/hildon-file-chooser-dialog.h>
+#include <gtk/gtk.h>
+#include <gtk/gtkfilechooser.h>
+
+#include <stdlib.h>
+#include <gst/gst.h>
+#include <esd.h>
+
+
+/*---------------------------------------------------------------------------*/
+/* Application UI data struct */
+typedef struct _AppData AppData;
+
+struct _AppData {
+ HildonApp *app;
+ HildonAppView *appview;
+ GtkWidget *tb_statusbar;
+ gint context_id;
+ gchar *filename;
+ GstElement *pipeline;
+};
+
+
+/*---------------------------------------------------------------------------*/
+static int esdlaunch(short *buf, int bufsize)
+{
+ int sock = -1;
+
+ /* Play 16bit mono stream */
+ esd_format_t format = ESD_BITS16 | ESD_MONO | ESD_STREAM | ESD_PLAY;
+
+ sock = esd_play_stream_fallback(format, ESD_DEFAULT_RATE, NULL, "wavlaunch");
+ if (sock <= 0) {
+ fprintf (stderr, "Error at esd open: %d", sock);
+ return -1;
+ }
+
+ write(sock, buf, bufsize);
+
+ close(sock);
+
+ return 0;
+}
+
+
+/*---------------------------------------------------------------------------*/
+static int bling(void)
+{
+ int sts = -1;
+ short *buf;
+ int bufsize, i, samplestoplay;
+ float samplerate, frequency;
+ float played, playtime;
+ float amplitude, amplitudemax;
+ float phase, phasescale;
+
+ samplerate = 44100.0;
+ amplitudemax = 32000.0;
+ frequency = 1000.0;
+ playtime = 0.25;
+
+ samplestoplay = (int)(playtime * samplerate);
+
+ /* allocate buffer for "Bling". 16 bit samples. */
+ bufsize = samplestoplay * 2;
+ buf = (short *)malloc(bufsize);
+ if (buf) {
+
+ /* generate sinewave with linearly decreasing amplitude */
+ phasescale = 6.28 * (float)frequency * playtime;
+ for (i = 0; i < samplestoplay; i++) {
+ played = (float)i / (float)samplestoplay;
+ phase = played * phasescale;
+ amplitude = amplitudemax * (1.0 - played);
+ buf[i] = (short)(amplitude * sin(phase));
+ }
+
+ /* play the buffer */
+ sts = esdlaunch(buf, bufsize);
+
+ free(buf);
+ }
+
+ return sts;
+}
+
+
+/*---------------------------------------------------------------------------*/
+static void eos_message_received (GstBus * bus, GstMessage * message,
+ AppData * appdata)
+{
+ /* stop playback and free pipeline */
+ gst_element_set_state (appdata->pipeline, GST_STATE_NULL);
+ gst_object_unref (GST_OBJECT(appdata->pipeline));
+ appdata->pipeline = NULL;
+}
+
+
+/*---------------------------------------------------------------------------*/
+static int play_file (AppData * appdata)
+{
+ GstElement *filesrc;
+ GstBus *bus;
+ GError *error = NULL;
+
+ /* we're already playing */
+ if (appdata->pipeline) return -1;
+
+ /* setup pipeline and configure elements */
+ appdata->pipeline = gst_parse_launch (
+#ifdef __arm__
+ "filesrc name=my_filesrc ! wavparse ! dsppcmsink",
+#else
+ "filesrc name=my_filesrc ! wavparse ! osssink",
+#endif
+ &error);
+ if (!appdata->pipeline) {
+ fprintf (stderr, "Parse error: %s\n", error->message);
+ goto error;
+ }
+
+ filesrc = gst_bin_get_by_name (GST_BIN (appdata->pipeline), "my_filesrc");
+ if (!filesrc) {
+ fprintf (stderr, "Parse error: no filesrc\n");
+ goto error;
+ }
+
+ g_object_set (G_OBJECT (filesrc), "location", appdata->filename, NULL);
+
+ /* setup message handling */
+ bus = gst_pipeline_get_bus (GST_PIPELINE (appdata->pipeline));
+ gst_bus_add_signal_watch_full (bus, G_PRIORITY_HIGH);
+ g_signal_connect (bus, "message::eos", (GCallback) eos_message_received,
+ appdata);
+ gst_object_unref (GST_OBJECT(bus));
+
+ /* start playback */
+ gst_element_set_state (appdata->pipeline, GST_STATE_PLAYING);
+ return 0;
+
+error:
+ gst_object_unref (GST_OBJECT(appdata->pipeline));
+ appdata->pipeline = NULL;
+ return -1;
+}
+
+
+/*---------------------------------------------------------------------------*/
+static gchar *file_chooser(AppData * appdata)
+{
+ GtkWidget *dialog;
+ gchar *filename = NULL;
+
+#if __arm__
+ dialog = hildon_file_chooser_dialog_new(
+ GTK_WINDOW(appdata->app),
+ GTK_FILE_CHOOSER_ACTION_OPEN);
+#else
+ dialog = gtk_file_chooser_dialog_new("Open File",
+ GTK_WINDOW(appdata->app),
+ GTK_FILE_CHOOSER_ACTION_OPEN,
+ GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
+ GTK_STOCK_OPEN, GTK_RESPONSE_OK,
+ NULL);
+#endif
+ if (dialog) {
+ gint response;
+
+ gtk_file_chooser_set_current_folder(GTK_FILE_CHOOSER(dialog),
+ "/home/user");
+ gtk_widget_show_all(GTK_WIDGET(dialog));
+
+ response = gtk_dialog_run(GTK_DIALOG(dialog));
+ if (response == GTK_RESPONSE_OK) {
+ filename = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(dialog));
+ }
+
+ gtk_widget_destroy(dialog);
+ }
+
+ return filename;
+}
+
+
+/*---------------------------------------------------------------------------*/
+static void tb_open_cb(GtkToolButton *button, AppData * appdata)
+{
+ gchar *filename = NULL;
+
+ filename = file_chooser(appdata);
+
+ if (filename) {
+ if (appdata->filename) g_free(appdata->filename);
+ appdata->filename = g_strdup(filename);
+
+ gtk_statusbar_push (GTK_STATUSBAR (appdata->tb_statusbar),
+ GPOINTER_TO_INT (appdata->context_id),
+ filename);
+ }
+
+ /* Play audible bling sound */
+#ifdef __arm__
+ bling();
+#endif
+
+ return;
+}
+
+
+/*---------------------------------------------------------------------------*/
+/* Callback for "Play" toolbar button */
+static void tb_play_cb(GtkToolButton * button, AppData * appdata)
+{
+ g_print("Playing file %s\n", appdata->filename );
+
+ play_file( appdata );
+}
+
+
+/*---------------------------------------------------------------------------*/
+/* Callback for "Close" menu entry */
+static void item_close_cb(void)
+{
+ g_print("Closing application...\n");
+
+ gtk_main_quit();
+}
+
+
+/*---------------------------------------------------------------------------*/
+/* Create the menu items needed for the main view */
+static void create_menu(HildonAppView * main_view)
+{
+ /* Create needed variables */
+ GtkMenu *main_menu;
+ GtkWidget *item_close;
+
+ GtkWidget *item_separator;
+
+
+ /* Get the menu from view */
+ main_menu = hildon_appview_get_menu(main_view);
+
+ if (main_menu) {
+ /* Create menu items */
+ item_close = gtk_menu_item_new_with_label("Close");
+ if (item_close) {
+ item_separator = gtk_separator_menu_item_new();
+
+ /* Add menu items */
+ gtk_menu_append(main_menu, item_close);
+
+ /* Attach the callback functions to the activate signal */
+ g_signal_connect(G_OBJECT(item_close), "activate",
+ GTK_SIGNAL_FUNC(item_close_cb), NULL);
+
+ /* Make all menu widgets visible */
+ gtk_widget_show_all(GTK_WIDGET(main_menu));
+ }
+ }
+}
+
+
+
+/*---------------------------------------------------------------------------*/
+/* Create the toolbar needed for the main view */
+static void create_toolbar(HildonAppView * main_view, AppData *appdata)
+{
+ /* Create needed variables */
+ GtkWidget *main_toolbar;
+ GtkToolItem *tb_open;
+ GtkToolItem *tb_play;
+ GtkToolItem *tb_separator;
+ GtkToolItem *tb_comboitem;
+ GtkComboBox *tb_combo;
+
+ /* Create toolbar */
+ main_toolbar = gtk_toolbar_new();
+
+ if (main_toolbar) {
+ /* Create toolbar button items */
+ tb_open = gtk_tool_button_new_from_stock(GTK_STOCK_OPEN);
+ tb_play = gtk_tool_button_new_from_stock(GTK_STOCK_MEDIA_PLAY);
+
+ /* Create toolbar combobox item */
+ tb_comboitem = gtk_tool_item_new();
+
+ appdata->tb_statusbar = gtk_statusbar_new();
+
+ appdata->context_id = gtk_statusbar_get_context_id(
+ GTK_STATUSBAR (appdata->tb_statusbar),
+ "Playing file");
+
+ gtk_statusbar_push (GTK_STATUSBAR (appdata->tb_statusbar),
+ GPOINTER_TO_INT (appdata->context_id),
+ " Please open pcm wav file to play");
+
+
+ /* Make combobox to use all available toolbar space */
+ gtk_tool_item_set_expand(tb_comboitem, TRUE);
+
+ /* Add combobox inside toolitem */
+ gtk_container_add(GTK_CONTAINER(tb_comboitem),
+ GTK_WIDGET(appdata->tb_statusbar));
+
+
+ /* Create separator */
+ tb_separator = gtk_separator_tool_item_new();
+
+ /* Add all items to toolbar */
+ gtk_toolbar_insert(GTK_TOOLBAR(main_toolbar), tb_open, -1);
+ gtk_toolbar_insert(GTK_TOOLBAR(main_toolbar), tb_play, -1);
+ gtk_toolbar_insert(GTK_TOOLBAR(main_toolbar), tb_comboitem, -1);
+
+ /* Add signal lister to "Close" button */
+ g_signal_connect(G_OBJECT(tb_open), "clicked",
+ G_CALLBACK(tb_open_cb), appdata);
+ g_signal_connect(G_OBJECT(tb_play), "clicked",
+ G_CALLBACK(tb_play_cb), appdata);
+
+ /* Add toolbar to 'vbox' of HildonAppView */
+ gtk_box_pack_end(GTK_BOX(main_view->vbox), main_toolbar, TRUE, TRUE, 0);
+ }
+}
+
+
+
+/*---------------------------------------------------------------------------*/
+/* Main application */
+int main(int argc, char *argv[])
+{
+ /* Create needed variables */
+ AppData *appdata;
+
+ HildonApp *app;
+ HildonAppView *appview;
+
+ /* Initialize the GTK and GStreamer. */
+ gtk_init(&argc, &argv);
+ gst_init(&argc, &argv);
+
+ /* Create the hildon application and setup the title */
+ app = HILDON_APP(hildon_app_new());
+ hildon_app_set_title(app, "Wav Launch Demo");
+
+ /* Create HildonAppView and set it to HildonApp */
+ appview = HILDON_APPVIEW(hildon_appview_new(NULL));
+ hildon_app_set_appview(app, appview);
+
+ /* Create AppData */
+ appdata = g_new0(AppData, 1);
+ if (appdata) {
+ GtkWidget *label;
+
+ appdata->app = app;
+ appdata->appview = appview;
+
+ /* Add example label to appview */
+ label = gtk_label_new(NULL);
+ gtk_label_set_markup(GTK_LABEL(label),
+ "<b>GStreamer launch Demo</b>\n\n"
+ "Plays pcm wav files.\n\n"
+ "Uses gstreamer function gst_parse_launch, with plugins\n"
+ "filesrc, wavparse and dsppcmsink.\n\n"
+ "Also shows how to listen to messages from the GStreamer bus.\n\n"
+ "At file open, audible response is given using esd low level API.\n");
+
+ gtk_container_add(GTK_CONTAINER(appview), label);
+
+ /* Create menu for view */
+ create_menu(appview);
+
+ /* Create toolbar for view */
+ create_toolbar(appview, appdata);
+
+ /* Begin the main application */
+ gtk_widget_show_all(GTK_WIDGET(app));
+
+ gtk_main();
+
+ if (appdata->pipeline) gst_object_unref(GST_OBJECT(appdata->pipeline));
+ if (appdata->filename) g_free(appdata->filename);
+ g_free(appdata);
+ }
+
+ /* Exit */
+ return 0;
+}
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