+2008-08-31 Sebastian Dröge <sebastian.droege@collabora.co.uk>
+
+ Patch by: Rov Juvano <rovjuvano at users dot sourceforge dot net>
+
+ * configure.ac:
+ * docs/plugins/Makefile.am:
+ * docs/plugins/gst-plugins-bad-plugins-docs.sgml:
+ * docs/plugins/gst-plugins-bad-plugins-sections.txt:
+ * docs/plugins/inspect/plugin-scaletempo.xml:
+ * examples/scaletempo/Makefile.am:
+ * examples/scaletempo/demo-gui.c: (pop_status_bar),
+ (status_bar_printf), (demo_gui_seek_bar_format), (update_position),
+ (demo_gui_seek_bar_change), (demo_gui_do_change_rate),
+ (demo_gui_do_set_rate), (demo_gui_do_rate_entered),
+ (demo_gui_do_toggle_advanced), (demo_gui_do_toggle_disabled),
+ (demo_gui_do_seek), (demo_gui_do_play), (demo_gui_do_pause),
+ (demo_gui_do_play_pause), (demo_gui_do_open_file),
+ (demo_gui_do_playlist_prev), (demo_gui_do_playlist_next),
+ (demo_gui_do_about_dialog), (demo_gui_do_quit),
+ (demo_gui_request_set_stride), (demo_gui_request_set_overlap),
+ (demo_gui_request_set_search), (demo_gui_rate_changed),
+ (demo_gui_playing_started), (demo_gui_playing_paused),
+ (demo_gui_playing_ended), (demo_gui_player_errored),
+ (demo_gui_stride_changed), (demo_gui_overlap_changed),
+ (demo_gui_search_changed), (demo_gui_set_player_func),
+ (demo_gui_set_playlist_func), (build_gvalue_array),
+ (create_action), (demo_gui_show_func), (demo_gui_set_player),
+ (demo_gui_set_playlist), (demo_gui_show), (demo_gui_get_property),
+ (demo_gui_set_property), (demo_gui_init), (demo_gui_class_init),
+ (demo_gui_get_type):
+ * examples/scaletempo/demo-gui.h:
+ * examples/scaletempo/demo-main.c: (handle_error_message),
+ (handle_quit), (main):
+ * examples/scaletempo/demo-player.c: (no_pipeline),
+ (demo_player_event_listener), (demo_player_state_changed_cb),
+ (demo_player_eos_cb), (demo_player_build_pipeline), (_set_rate),
+ (demo_player_scale_rate_func), (demo_player_set_rate_func),
+ (_set_state_and_wait), (demo_player_load_uri_func),
+ (demo_player_play_func), (demo_player_pause_func), (_seek_to),
+ (demo_player_seek_by_func), (demo_player_seek_to_func),
+ (demo_player_get_position_func), (demo_player_get_duration_func),
+ (demo_player_scale_rate), (demo_player_set_rate),
+ (demo_player_load_uri), (demo_player_play), (demo_player_pause),
+ (demo_player_seek_by), (demo_player_seek_to),
+ (demo_player_get_position), (demo_player_get_duration),
+ (demo_player_get_property), (demo_player_set_property),
+ (demo_player_init), (demo_player_class_init),
+ (demo_player_get_type):
+ * examples/scaletempo/demo-player.h:
+ * gst/scaletempo/Makefile.am:
+ * gst/scaletempo/gstscaletempo.c: (best_overlap_offset_float),
+ (best_overlap_offset_s16), (output_overlap_float),
+ (output_overlap_s16), (fill_queue), (reinit_buffers),
+ (gst_scaletempo_transform), (gst_scaletempo_transform_size),
+ (gst_scaletempo_sink_event), (gst_scaletempo_set_caps),
+ (gst_scaletempo_get_property), (gst_scaletempo_set_property),
+ (gst_scaletempo_base_init), (gst_scaletempo_class_init),
+ (gst_scaletempo_init):
+ * gst/scaletempo/gstscaletempo.h:
+ * gst/scaletempo/gstscaletempoplugin.c: (plugin_init):
+ Add scaletempo plugin, which allows to scale the speed of audio without
+ changing the pitch by handling seeks with a rate!=1.0.
+ Integrate it into the docs and add the example application for it.
+ Fixes bug #537700.
+
2008-08-30 David Schleef <ds@schleef.org>
* ext/dirac/gstdiracenc.cc: Fix some memleaks.
AG_GST_CHECK_PLUGIN(rawparse)
AG_GST_CHECK_PLUGIN(real)
AG_GST_CHECK_PLUGIN(rtpmanager)
+AG_GST_CHECK_PLUGIN(scaletempo)
AG_GST_CHECK_PLUGIN(sdp)
AG_GST_CHECK_PLUGIN(selector)
AG_GST_CHECK_PLUGIN(speed)
gst/pcapparse/Makefile
gst/rawparse/Makefile
gst/rtpmanager/Makefile
+gst/scaletempo/Makefile
gst/sdp/Makefile
gst/selector/Makefile
gst/speed/Makefile
examples/Makefile
examples/app/Makefile
examples/directfb/Makefile
+examples/scaletempo/Makefile
examples/switch/Makefile
ext/amrwb/Makefile
ext/alsaspdif/Makefile
$(top_srcdir)/gst/rtpmanager/gstrtpptdemux.h \
$(top_srcdir)/gst/rtpmanager/gstrtpsession.h \
$(top_srcdir)/gst/rtpmanager/gstrtpssrcdemux.h \
+ $(top_srcdir)/gst/scaletempo/gstscaletempo.h \
$(top_srcdir)/gst/sdp/gstsdpdemux.h \
$(top_srcdir)/gst/selector/gstinputselector.h \
$(top_srcdir)/gst/selector/gstoutputselector.h \
<xi:include href="xml/element-mythtvsrc.xml" />
<xi:include href="xml/element-nuvdemux.xml" />
<xi:include href="xml/element-output-selector.xml" />
+ <xi:include href="xml/element-scaletempo.xml" />
<xi:include href="xml/element-sdlaudiosink.xml" />
<xi:include href="xml/element-sdlvideosink.xml" />
<xi:include href="xml/element-sdpdemux.xml" />
<xi:include href="xml/plugin-rawparse.xml" />
<xi:include href="xml/plugin-real.xml" />
<xi:include href="xml/plugin-rfbsrc.xml" />
+ <xi:include href="xml/plugin-scaletempo.xml" />
<xi:include href="xml/plugin-sdl.xml" />
<xi:include href="xml/plugin-sdp.xml" />
<xi:include href="xml/plugin-selector.xml" />
GST_IS_RTP_SSRC_DEMUX_CLASS
</SECTION>
+<SECTION>
+<FILE>element-scaletempo</FILE>
+<TITLE>scaletempo</TITLE>
+GstScaletempo
+<SUBSECTION Standard>
+GstScaletempoClass
+GST_IS_SCALETEMPO
+GST_IS_SCALETEMPO_CLASS
+GST_SCALETEMPO
+GST_SCALETEMPO_CLASS
+GST_TYPE_SCALETEMPO
+gst_scaletempo_get_type
+</SECTION>
+
<SECTION>
<FILE>element-sdlaudiosink</FILE>
<TITLE>sdlaudiosink</TITLE>
--- /dev/null
+<plugin>
+ <name>scaletempo</name>
+ <description>Scale audio tempo in sync with playback rate</description>
+ <filename>../../gst/scaletempo/.libs/libgstscaletempoplugin.so</filename>
+ <basename>libgstscaletempoplugin.so</basename>
+ <version>0.10.8.1</version>
+ <license>LGPL</license>
+ <source>gst-plugins-bad</source>
+ <package>GStreamer</package>
+ <origin>http://gstreamer.freedesktop.org/</origin>
+ <elements>
+ <element>
+ <name>scaletempo</name>
+ <longname>Scaletempo</longname>
+ <class>Filter/Effect/Rate</class>
+ <description>Sync audio tempo with playback rate</description>
+ <author>Rov Juvano <rovjuvano@users.sourceforge.net></author>
+ <pads>
+ <caps>
+ <name>sink</name>
+ <direction>sink</direction>
+ <presence>always</presence>
+ <details>audio/x-raw-float, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ], endianness=(int)1234, width=(int)32; audio/x-raw-int, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ], endianness=(int)1234, width=(int)16, depth=(int)16, signed=(boolean)true</details>
+ </caps>
+ <caps>
+ <name>src</name>
+ <direction>source</direction>
+ <presence>always</presence>
+ <details>audio/x-raw-float, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ], endianness=(int)1234, width=(int)32; audio/x-raw-int, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ], endianness=(int)1234, width=(int)16, depth=(int)16, signed=(boolean)true</details>
+ </caps>
+ </pads>
+ </element>
+ </elements>
+</plugin>
\ No newline at end of file
--- /dev/null
+noinst_PROGRAMS = scaletempo-demo
+
+scaletempo_demo_SOURCES = demo-main.c demo-player.c demo-gui.c
+scaletempo_demo_CFLAGS = $(GST_CFLAGS) $(GST_PLUGINS_BASE_CFLAGS) $(GTK_CFLAGS)
+scaletempo_demo_LDFLAGS = $(GST_LIBS) $(GST_PLUGINS_BASE_LIBS) $(GTK_LIBS) -lgstinterfaces-@GST_MAJORMINOR@
+
+noinst_HEADERS = demo-player.h demo-gui.h
+
--- /dev/null
+/* demo-gui.c
+ * Copyright (C) 2008 Rov Juvano <rovjuvano@users.sourceforge.net>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gtk/gtk.h>
+#include <glib/gprintf.h>
+#include <math.h>
+#include "demo-gui.h"
+
+#undef G_LOG_DOMAIN
+#define G_LOG_DOMAIN "demo-gui"
+
+enum
+{
+ SIGNAL_ERROR,
+ SIGNAL_QUITING,
+ LAST_SIGNAL
+};
+static guint demo_gui_signals[LAST_SIGNAL] = { 0 };
+
+enum
+{
+ PROP_0,
+};
+
+typedef struct _DemoGuiPrivate
+{
+ DemoPlayer *player;
+ GList *uris;
+ GList *now_playing;
+ gboolean is_playing;
+ GtkWidget *window;
+ GtkEntry *rate_entry;
+ GtkStatusbar *status_bar;
+ gint position_updater_id;
+ GtkRange *seek_range;
+ GtkLabel *amount_played;
+ GtkLabel *amount_to_play;
+ GtkAction *play_action;
+ GtkAction *pause_action;
+ GtkAction *open_file;
+ GtkAction *playlist_next;
+} DemoGuiPrivate;
+
+#define DEMO_GUI_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), DEMO_TYPE_GUI, DemoGuiPrivate))
+
+/* forward declarations */
+static GValueArray *build_gvalue_array (guint n_values, ...);
+
+/* Handlers for status bar and seek bar */
+static int
+pop_status_bar (gpointer data)
+{
+ GValueArray *gvalues = (GValueArray *) data;
+ GtkStatusbar *sb =
+ GTK_STATUSBAR (g_value_get_object (g_value_array_get_nth (gvalues, 0)));
+ guint msg_id = g_value_get_uint (g_value_array_get_nth (gvalues, 1));
+
+ gtk_statusbar_remove (sb, 0, msg_id);
+ return FALSE;
+}
+
+#define DEFAULT_STATUS_BAR_TIMEOUT 2
+static void
+status_bar_printf (GtkStatusbar * sb, guint seconds, gchar const *format, ...)
+{
+ va_list args;
+ gchar msg[80];
+ guint msg_id;
+
+ va_start (args, format);
+ g_vsnprintf (msg, 80, format, args);
+ va_end (args);
+
+ msg_id = gtk_statusbar_push (sb, 0, msg);
+ g_timeout_add (2000, pop_status_bar,
+ build_gvalue_array (2, G_TYPE_OBJECT, sb, G_TYPE_UINT, msg_id));
+}
+
+#define PRINTF_TIME_FORMAT "u:%02u:%02u"
+#define PRINTF_TIME_ARGS(t) \
+ (t >= 0) ? (guint) ((t) / (60 * 60)) : 99, \
+ (t >= 0) ? (guint) (((t) / (60)) % 60) : 99, \
+ (t >= 0) ? (guint) ((t) % 60) : 99
+
+static gchar *
+demo_gui_seek_bar_format (GtkScale * scale, gdouble value, gpointer data)
+{
+ return g_strdup_printf ("%" PRINTF_TIME_FORMAT,
+ PRINTF_TIME_ARGS ((gint64) value));
+}
+
+gboolean
+update_position (gpointer data)
+{
+ DemoGui *gui = DEMO_GUI (data);
+ DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui);
+ gchar pos_str[16], dur_str[16];
+ gint pos = demo_player_get_position (priv->player);
+
+ if (pos > 0) {
+ gint dur = demo_player_get_duration (priv->player);
+
+ g_snprintf (pos_str, 16, "%" PRINTF_TIME_FORMAT, PRINTF_TIME_ARGS (pos));
+ if (dur > 0) {
+ g_snprintf (dur_str, 16, "-%" PRINTF_TIME_FORMAT,
+ PRINTF_TIME_ARGS (dur - pos));
+ } else {
+ dur = pos;
+ g_sprintf (dur_str, "-??:??:??");
+ }
+ if (dur > 0)
+ gtk_range_set_range (GTK_RANGE (priv->seek_range), 0, (gdouble) dur);
+ gtk_range_set_value (GTK_RANGE (priv->seek_range), (gdouble) pos);
+ } else {
+ g_sprintf (pos_str, "??:??:??");
+ g_sprintf (dur_str, "-??:??:??");
+ }
+ gtk_label_set_text (GTK_LABEL (priv->amount_played), pos_str);
+ gtk_label_set_text (GTK_LABEL (priv->amount_to_play), dur_str);
+
+ return priv->is_playing;
+}
+
+
+gboolean
+demo_gui_seek_bar_change (GtkRange * range,
+ GtkScrollType scroll, gdouble value, gpointer data)
+{
+ DemoGui *gui = DEMO_GUI (data);
+ DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui);
+ gint new_second = (gint) value;
+
+ status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT,
+ "Seeking to %i second", new_second);
+ demo_player_seek_to (priv->player, new_second);
+
+ return FALSE;
+}
+
+
+/* Callbacks for actions */
+static void
+demo_gui_do_change_rate (GtkAction * action, gpointer data)
+{
+ GValueArray *gvalues = (GValueArray *) data;
+ DemoGui *gui = g_value_get_object (g_value_array_get_nth (gvalues, 0));
+ gdouble scale_amount =
+ g_value_get_double (g_value_array_get_nth (gvalues, 1));
+ DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui);
+
+ status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT,
+ "Changing rate by %3.2lf", scale_amount);
+
+ demo_player_scale_rate (priv->player, scale_amount);
+}
+
+static void
+demo_gui_do_set_rate (GtkAction * action, gpointer data)
+{
+ GValueArray *gvalues = (GValueArray *) data;
+ DemoGui *gui = g_value_get_object (g_value_array_get_nth (gvalues, 0));
+ gdouble new_rate = g_value_get_double (g_value_array_get_nth (gvalues, 1));
+ DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui);
+
+ status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT,
+ "Setting rate to %3.2lf", new_rate);
+
+ demo_player_set_rate (priv->player, new_rate);
+}
+
+static gboolean
+demo_gui_do_rate_entered (GtkWidget * widget, gpointer data)
+{
+ DemoGui *gui = DEMO_GUI (data);
+ DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui);
+ gchar *err = NULL;
+ const gchar *text = gtk_entry_get_text (GTK_ENTRY (widget));
+ double new_rate = g_strtod (text, &err);
+
+ if (*err) {
+ gtk_widget_error_bell (priv->window);
+ status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT,
+ "Invalid rate: %s", text);
+ return TRUE;
+ }
+
+ status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT,
+ "Setting rate to %3.2lf", new_rate);
+
+ demo_player_set_rate (priv->player, new_rate);
+ return FALSE;
+}
+
+static void
+demo_gui_do_toggle_advanced (GtkAction * action, gpointer data)
+{
+ GValueArray *gvalues = (GValueArray *) data;
+ DemoGui *gui =
+ DEMO_GUI (g_value_get_object (g_value_array_get_nth (gvalues, 0)));
+ GtkWidget *stride_ui =
+ GTK_WIDGET (g_value_get_object (g_value_array_get_nth (gvalues, 1)));
+ GtkWidget *overlap_ui =
+ GTK_WIDGET (g_value_get_object (g_value_array_get_nth (gvalues, 2)));
+ GtkWidget *search_ui =
+ GTK_WIDGET (g_value_get_object (g_value_array_get_nth (gvalues, 3)));
+ DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui);
+ gboolean active;
+
+ status_bar_printf (priv->status_bar, 1, "Toggling advanced mode");
+
+ active = gtk_toggle_action_get_active (GTK_TOGGLE_ACTION (action));
+ gtk_widget_set_sensitive (stride_ui, active);
+ gtk_widget_set_sensitive (overlap_ui, active);
+ gtk_widget_set_sensitive (search_ui, active);
+}
+
+static void
+demo_gui_do_toggle_disabled (GtkAction * action, gpointer data)
+{
+ GValueArray *gvalues = (GValueArray *) data;
+ DemoGui *gui =
+ DEMO_GUI (g_value_get_object (g_value_array_get_nth (gvalues, 0)));
+ GtkAction *advanced_action =
+ GTK_ACTION (g_value_get_object (g_value_array_get_nth (gvalues, 1)));
+ GtkWidget *advanced_ui =
+ GTK_WIDGET (g_value_get_object (g_value_array_get_nth (gvalues, 2)));
+
+ DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui);
+ gboolean active;
+
+ status_bar_printf (priv->status_bar, 1, "Toggling disabled");
+
+ active = gtk_toggle_action_get_active (GTK_TOGGLE_ACTION (action));
+ gtk_action_set_sensitive (GTK_ACTION (advanced_action), !active);
+ gtk_widget_set_sensitive (GTK_WIDGET (advanced_ui), !active);
+ g_object_set (G_OBJECT (priv->player), "disabled", active, NULL);
+}
+
+static void
+demo_gui_do_seek (GtkAction * action, gpointer data)
+{
+ GValueArray *gvalues = (GValueArray *) data;
+ DemoGui *gui =
+ DEMO_GUI (g_value_get_object (g_value_array_get_nth (gvalues, 0)));
+ gint seconds = g_value_get_int (g_value_array_get_nth (gvalues, 1));
+ DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui);
+
+ status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT,
+ "Requesting seek by %i seconds", seconds);
+
+ demo_player_seek_by (priv->player, seconds);
+}
+
+static void
+demo_gui_do_play (GtkAction * action, gpointer data)
+{
+ DemoGui *gui = DEMO_GUI (data);
+ DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui);
+
+ if (priv->is_playing) {
+ g_signal_emit (gui, demo_gui_signals[SIGNAL_ERROR], 0, "Already playing");
+ return;
+ }
+
+ status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT,
+ "Requesting playback start");
+
+ demo_player_play (priv->player);
+}
+
+static void
+demo_gui_do_pause (GtkAction * action, gpointer data)
+{
+ DemoGui *gui = DEMO_GUI (data);
+ DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui);
+
+ if (!priv->is_playing) {
+ g_signal_emit (gui, demo_gui_signals[SIGNAL_ERROR], 0, "Already paused");
+ return;
+ }
+
+ status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT,
+ "Requesting playback pause");
+
+ demo_player_pause (priv->player);
+}
+
+static void
+demo_gui_do_play_pause (GtkAction * action, gpointer data)
+{
+ DemoGui *gui = DEMO_GUI (data);
+ DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui);
+
+ status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT,
+ "Reqesting playback toggle");
+
+ if (priv->is_playing)
+ gtk_action_activate (priv->pause_action);
+ else
+ gtk_action_activate (priv->play_action);
+}
+
+static void
+demo_gui_do_open_file (GtkAction * action, gpointer data)
+{
+ DemoGui *gui = DEMO_GUI (data);
+ DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui);
+ GtkWidget *dialog = gtk_file_chooser_dialog_new ("Open File",
+ GTK_WINDOW (priv->window),
+ GTK_FILE_CHOOSER_ACTION_OPEN,
+ GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
+ GTK_STOCK_OPEN, GTK_RESPONSE_ACCEPT,
+ NULL);
+
+ if (gtk_dialog_run (GTK_DIALOG (dialog)) == GTK_RESPONSE_ACCEPT) {
+ char *filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (dialog));
+ GError *err = NULL;
+
+ g_list_free (priv->uris);
+ priv->uris = NULL;
+ priv->now_playing = NULL;
+ demo_player_load_uri (priv->player, g_filename_to_uri (filename, NULL,
+ &err));
+ g_free (filename);
+ }
+ gtk_widget_destroy (dialog);
+}
+
+static void
+demo_gui_do_playlist_prev (GtkAction * action, gpointer data)
+{
+ DemoGui *gui = DEMO_GUI (data);
+ DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui);
+
+ if (priv->now_playing) {
+ if (priv->now_playing->prev) {
+ status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT,
+ "Playlist previous");
+ priv->now_playing = priv->now_playing->prev;
+ } else {
+ priv->now_playing = NULL;
+ gtk_widget_error_bell (priv->window);
+ status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT,
+ "Beginning of playlist");
+ return;
+ }
+ } else if (priv->uris) {
+ status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT,
+ "Playlist previous: wrap");
+ priv->now_playing = g_list_last (priv->uris);
+ } else {
+ gtk_action_activate (priv->open_file);
+ return;
+ }
+
+ demo_player_load_uri (priv->player, priv->now_playing->data);
+}
+
+static void
+demo_gui_do_playlist_next (GtkAction * action, gpointer data)
+{
+ DemoGui *gui = DEMO_GUI (data);
+ DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui);
+
+ if (priv->now_playing) {
+ if (priv->now_playing->next) {
+ status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT,
+ "Playlist next");
+ priv->now_playing = priv->now_playing->next;
+ } else {
+ priv->now_playing = NULL;
+ gtk_widget_error_bell (priv->window);
+ status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT,
+ "End of playlist");
+ return;
+ }
+ } else if (priv->uris) {
+ status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT,
+ "Playlist next: wrap");
+ priv->now_playing = priv->uris;
+ } else {
+ gtk_action_activate (priv->open_file);
+ return;
+ }
+
+ demo_player_load_uri (priv->player, priv->now_playing->data);
+}
+
+static void
+demo_gui_do_about_dialog (GtkAction * action, gpointer data)
+{
+ static gchar *authors[] =
+ { "Rov Juvano <rovjuvano@users.sourceforge.net>", NULL };
+
+ gtk_show_about_dialog (NULL,
+ "program-name", "gst-scaletempo-demo",
+ "version", VERSION,
+ "authors", authors,
+ "license", "This program is free software: you can redistribute it and/or modify\n\
+it under the terms of the GNU General Public License as published by\n\
+the Free Software Foundation, either version 3 of the License, or\n\
+(at your option) any later version.\n\
+\n\
+This program is distributed in the hope that it will be useful,\n\
+but WITHOUT ANY WARRANTY; without even the implied warranty of\n\
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n\
+GNU General Public License for more details.\n\
+\n\
+You should have received a copy of the GNU General Public License\n\
+along with this program. If not, see <http://www.gnu.org/licenses/>.", "title", "About gst-scaletempo-demo", NULL);
+}
+
+static void
+demo_gui_do_quit (gpointer source, gpointer data)
+{
+ gtk_main_quit ();
+ g_signal_emit (DEMO_GUI (data), demo_gui_signals[SIGNAL_QUITING], 0, NULL);
+}
+
+static gboolean
+demo_gui_request_set_stride (GtkSpinButton * spinbutton, gpointer data)
+{
+ DemoGui *gui = DEMO_GUI (data);
+ DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui);
+ guint new_stride = gtk_spin_button_get_value_as_int (spinbutton);
+
+ status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT,
+ "Reqesting setting stride to %u ms", new_stride);
+ g_object_set (G_OBJECT (priv->player), "stride", new_stride, NULL);
+ return TRUE;
+}
+
+static gboolean
+demo_gui_request_set_overlap (GtkSpinButton * spinbutton, gpointer data)
+{
+ DemoGui *gui = DEMO_GUI (data);
+ DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui);
+ gdouble new_overlap = gtk_spin_button_get_value_as_int (spinbutton);
+
+ status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT,
+ "Requesting setting overlap to %2.0lf%%", new_overlap);
+ g_object_set (G_OBJECT (priv->player), "overlap", new_overlap / 100.0, NULL);
+ return TRUE;
+}
+
+static gboolean
+demo_gui_request_set_search (GtkSpinButton * spinbutton, gpointer data)
+{
+ DemoGui *gui = DEMO_GUI (data);
+ DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui);
+ guint new_search = gtk_spin_button_get_value_as_int (spinbutton);
+
+ status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT,
+ "Requesting setting search to %u ms", new_search);
+ g_object_set (G_OBJECT (priv->player), "search", new_search, NULL);
+ return TRUE;
+}
+
+
+/* Callbacks from signals */
+static void
+demo_gui_rate_changed (DemoPlayer * player, gdouble new_rate, gpointer data)
+{
+ DemoGui *gui = DEMO_GUI (data);
+ DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui);
+ gchar e[6];
+
+ status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT,
+ "Rate changed to %3.2lf", new_rate);
+
+ g_snprintf (e, 6, "%3.2f", new_rate);
+ gtk_entry_set_text (GTK_ENTRY (priv->rate_entry), e);
+}
+
+static void
+demo_gui_playing_started (DemoPlayer * player, gpointer data)
+{
+ DemoGui *gui = DEMO_GUI (data);
+ DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui);
+
+ priv->is_playing = TRUE;
+ status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT,
+ "Playing started");
+
+ gtk_action_set_sensitive (priv->play_action, FALSE);
+ gtk_action_set_sensitive (priv->pause_action, TRUE);
+ gtk_action_set_visible (priv->play_action, FALSE);
+ gtk_action_set_visible (priv->pause_action, TRUE);
+
+ if (priv->position_updater_id) {
+ g_source_remove (priv->position_updater_id);
+ priv->position_updater_id = 0;
+ }
+ update_position (gui);
+ priv->position_updater_id = g_timeout_add (1000, update_position, gui);
+}
+
+static void
+demo_gui_playing_paused (DemoPlayer * player, gpointer data)
+{
+ DemoGui *gui = DEMO_GUI (data);
+ DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui);
+
+ gtk_action_set_sensitive (priv->play_action, TRUE);
+ gtk_action_set_sensitive (priv->pause_action, FALSE);
+ gtk_action_set_visible (priv->play_action, TRUE);
+ gtk_action_set_visible (priv->pause_action, FALSE);
+
+ priv->is_playing = FALSE;
+
+ if (priv->position_updater_id)
+ g_source_remove (priv->position_updater_id);
+ priv->position_updater_id = 0;
+ update_position (gui);
+
+ status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT,
+ "Playing paused");
+}
+
+static void
+demo_gui_playing_ended (DemoPlayer * player, gpointer data)
+{
+ DemoGui *gui = DEMO_GUI (data);
+ DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui);
+
+ status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT,
+ "Playing ended");
+ gtk_action_activate (priv->playlist_next);
+}
+
+static void
+demo_gui_player_errored (DemoPlayer * player, const gchar * msg, gpointer data)
+{
+ DemoGui *gui = DEMO_GUI (data);
+ DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui);
+
+ status_bar_printf (priv->status_bar, 5, msg);
+}
+
+static void
+demo_gui_stride_changed (DemoPlayer * player, GParamSpec * pspec, gpointer data)
+{
+ GValueArray *gvalues = (GValueArray *) data;
+ DemoGui *gui =
+ DEMO_GUI (g_value_get_object (g_value_array_get_nth (gvalues, 0)));
+ GtkEntry *entry =
+ GTK_ENTRY (g_value_get_object (g_value_array_get_nth (gvalues, 1)));
+ DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui);
+ guint new_stride;
+ gchar e[6];
+
+ g_object_get (G_OBJECT (player), "stride", &new_stride, NULL);
+ status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT,
+ "Stride changed to %u", new_stride);
+
+ snprintf (e, 6, "%u", new_stride);
+ gtk_entry_set_text (entry, e);
+}
+
+static void
+demo_gui_overlap_changed (DemoPlayer * player,
+ GParamSpec * pspec, gpointer data)
+{
+ GValueArray *gvalues = (GValueArray *) data;
+ DemoGui *gui =
+ DEMO_GUI (g_value_get_object (g_value_array_get_nth (gvalues, 0)));
+ GtkEntry *entry =
+ GTK_ENTRY (g_value_get_object (g_value_array_get_nth (gvalues, 1)));
+ DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui);
+ gdouble new_overlap;
+ gchar e[6];
+
+ g_object_get (G_OBJECT (player), "overlap", &new_overlap, NULL);
+ new_overlap *= 100;
+ status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT,
+ "Overlap changed to %2.0lf%%", new_overlap);
+
+ snprintf (e, 6, "%2.0f", new_overlap);
+ gtk_entry_set_text (entry, e);
+}
+
+static void
+demo_gui_search_changed (DemoPlayer * player, GParamSpec * pspec, gpointer data)
+{
+ GValueArray *gvalues = (GValueArray *) data;
+ DemoGui *gui =
+ DEMO_GUI (g_value_get_object (g_value_array_get_nth (gvalues, 0)));
+ GtkEntry *entry =
+ GTK_ENTRY (g_value_get_object (g_value_array_get_nth (gvalues, 1)));
+ DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui);
+ guint new_search;
+ gchar e[6];
+
+ g_object_get (G_OBJECT (player), "search", &new_search, NULL);
+ status_bar_printf (priv->status_bar, DEFAULT_STATUS_BAR_TIMEOUT,
+ "Search changed to %u", new_search);
+
+ snprintf (e, 6, "%u", new_search);
+ gtk_entry_set_text (entry, e);
+}
+
+
+/* method implementations */
+static void
+demo_gui_set_player_func (DemoGui * gui, DemoPlayer * player)
+{
+ DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui);
+
+ if (priv->player) {
+ g_signal_handlers_disconnect_by_func (G_OBJECT (priv->player),
+ G_CALLBACK (demo_gui_rate_changed), gui);
+ g_signal_handlers_disconnect_by_func (G_OBJECT (priv->player),
+ G_CALLBACK (demo_gui_playing_started), gui);
+ g_signal_handlers_disconnect_by_func (G_OBJECT (priv->player),
+ G_CALLBACK (demo_gui_playing_paused), gui);
+ g_signal_handlers_disconnect_by_func (G_OBJECT (priv->player),
+ G_CALLBACK (demo_gui_playing_ended), gui);
+ g_signal_handlers_disconnect_by_func (G_OBJECT (priv->player),
+ G_CALLBACK (demo_gui_player_errored), gui);
+ g_object_unref (priv->player);
+ }
+ g_object_ref (player);
+ priv->player = player;
+ g_signal_connect (G_OBJECT (priv->player), "error",
+ G_CALLBACK (demo_gui_player_errored), gui);
+ g_signal_connect (G_OBJECT (priv->player), "rate-changed",
+ G_CALLBACK (demo_gui_rate_changed), gui);
+ g_signal_connect (G_OBJECT (priv->player), "playing-started",
+ G_CALLBACK (demo_gui_playing_started), gui);
+ g_signal_connect (G_OBJECT (priv->player), "playing-paused",
+ G_CALLBACK (demo_gui_playing_paused), gui);
+ g_signal_connect (G_OBJECT (priv->player), "playing-ended",
+ G_CALLBACK (demo_gui_playing_ended), gui);
+ priv->is_playing = FALSE;
+}
+
+static void
+demo_gui_set_playlist_func (DemoGui * gui, GList * uris)
+{
+ DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui);
+ priv->uris = uris;
+}
+
+typedef struct _ActionEntry
+{
+ GtkAction *action;
+ GtkWidget *button;
+ const gchar *accel;
+ const gchar *name;
+ const gchar *label;
+ const gchar *tooltip;
+ const gchar *stock_id;
+ GtkAccelGroup *accel_group;
+ GtkActionGroup *action_group;
+ GCallback callback;
+ gpointer data;
+} ActionEntry;
+
+static GValueArray *
+build_gvalue_array (guint n_values, ...)
+{
+ va_list args;
+ GValueArray *gva;
+ int i;
+
+ va_start (args, n_values);
+ gva = g_value_array_new (n_values);
+
+ for (i = 0; i < n_values; i++) {
+ GType type = va_arg (args, GType);
+ GValue *gval = g_new0 (GValue, 1);
+ if (type == G_TYPE_INT) {
+ gint value = va_arg (args, gint);
+ g_value_set_int (g_value_init (gval, G_TYPE_INT), value);
+ } else if (type == G_TYPE_UINT) {
+ guint value = va_arg (args, guint);
+ g_value_set_uint (g_value_init (gval, G_TYPE_UINT), value);
+ } else if (type == G_TYPE_DOUBLE) {
+ double value = va_arg (args, double);
+ g_value_set_double (g_value_init (gval, G_TYPE_DOUBLE), value);
+ } else if (type == G_TYPE_OBJECT) {
+ GObject *value = va_arg (args, GObject *);
+ g_value_set_object (g_value_init (gval, G_TYPE_OBJECT), value);
+ } else {
+ g_critical ("build_gvalue_array cannot handle type (%s)",
+ g_type_name (type));
+ va_end (args);
+ return NULL;
+ }
+ g_value_array_append (gva, gval);
+ }
+ va_end (args);
+ return gva;
+}
+
+static void
+create_action (ActionEntry * p)
+{
+ p->action = gtk_action_new (p->name, p->label, p->tooltip, p->stock_id);
+
+ gtk_action_group_add_action_with_accel (p->action_group, p->action, p->accel);
+ gtk_action_set_accel_group (p->action, p->accel_group);
+ gtk_action_connect_accelerator (p->action);
+
+ p->button = gtk_button_new ();
+ gtk_action_connect_proxy (p->action, p->button);
+ gtk_button_set_image (GTK_BUTTON (p->button),
+ gtk_action_create_icon (p->action, GTK_ICON_SIZE_BUTTON));
+ g_signal_connect (G_OBJECT (p->action), "activate", p->callback, p->data);
+}
+
+static void
+demo_gui_show_func (DemoGui * gui)
+{
+ DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui);
+ GtkWidget *window;
+ GtkAccelGroup *accel_group;
+ GtkActionGroup *action_group;
+ GtkAction *toggle_advanced, *toggle_disabled;
+ ActionEntry *slower_lg, *slower_sm, *faster_sm, *faster_lg, *normal,
+ *rewind_lg, *rewind_sm, *forward_sm, *forward_lg, *pause, *play,
+ *play_pause, *open_file, *playlist_prev, *playlist_next, *quit, *about;
+ GtkRequisition pause_size;
+ GtkWidget *rate_entry, *rate_label, *toolbox, *stride_ui, *overlap_ui,
+ *search_ui, *propbox, *adv_check, *disabled_check, *media_controls,
+ *amount_played, *amount_to_play, *seek_range, *seek_bar, *status_bar,
+ *file_menu, *file_menu_item, *media_menu_item, *demo_menu,
+ *demo_menu_item, *menu_bar, *toplevel_box, *media_menu;
+ GError *error = NULL;
+
+ gtk_init (NULL, NULL);
+ window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
+ g_signal_connect (G_OBJECT (window), "destroy", G_CALLBACK (demo_gui_do_quit),
+ gui);
+
+ accel_group = gtk_accel_group_new ();
+ gtk_window_add_accel_group (GTK_WINDOW (window), accel_group);
+ action_group = gtk_action_group_new ("toolbar");
+
+ slower_lg = &(ActionEntry) {
+ NULL, NULL,
+ "braceleft", "slower-large",
+ "2x Slower", "half playback rate",
+ GTK_STOCK_GO_DOWN, accel_group, action_group,
+ G_CALLBACK (demo_gui_do_change_rate),
+ build_gvalue_array (2, G_TYPE_OBJECT, gui, G_TYPE_DOUBLE, 0.5)
+ };
+ create_action (slower_lg);
+
+ slower_sm = &(ActionEntry) {
+ NULL, NULL,
+ "bracketleft", "slower-small",
+ "_Slower", "decrease playback rate",
+ GTK_STOCK_GO_DOWN, accel_group, action_group,
+ G_CALLBACK (demo_gui_do_change_rate),
+ build_gvalue_array (2, G_TYPE_OBJECT, gui, G_TYPE_DOUBLE, pow (2,
+ -1.0 / 12))
+ };
+ create_action (slower_sm);
+
+ faster_sm = &(ActionEntry) {
+ NULL, NULL,
+ "bracketright", "faster-small",
+ "_Faster", "increase playback rate",
+ GTK_STOCK_GO_UP, accel_group, action_group,
+ G_CALLBACK (demo_gui_do_change_rate),
+ build_gvalue_array (2, G_TYPE_OBJECT, gui, G_TYPE_DOUBLE, pow (2,
+ 1.0 / 12))
+ };
+ create_action (faster_sm);
+
+ faster_lg = &(ActionEntry) {
+ NULL, NULL,
+ "braceright", "faster-large",
+ "2X Faster", "double playback rate",
+ GTK_STOCK_GO_UP, accel_group, action_group,
+ G_CALLBACK (demo_gui_do_change_rate),
+ build_gvalue_array (2, G_TYPE_OBJECT, gui, G_TYPE_DOUBLE, 2.0)
+ };
+ create_action (faster_lg);
+
+ normal = &(ActionEntry) {
+ NULL, NULL,
+ "backslash", "normal",
+ "_Normal", "playback normal rate",
+ GTK_STOCK_CLEAR, accel_group, action_group,
+ G_CALLBACK (demo_gui_do_set_rate),
+ build_gvalue_array (2, G_TYPE_OBJECT, gui, G_TYPE_DOUBLE, 1.0)
+ };
+ create_action (normal);
+
+ rewind_lg = &(ActionEntry) {
+ NULL, NULL,
+ "<ctrl><shift>Left", "seek-rewind-large",
+ "Rewind (large)", "seek -30 seconds",
+ GTK_STOCK_MEDIA_REWIND, accel_group, action_group,
+ G_CALLBACK (demo_gui_do_seek),
+ build_gvalue_array (2, G_TYPE_OBJECT, gui, G_TYPE_INT, -30)
+ };
+ create_action (rewind_lg);
+
+ rewind_sm = &(ActionEntry) {
+ NULL, NULL,
+ "<ctrl>Left", "seek-rewind-small",
+ "Rewind", "seek -15 seconds",
+ GTK_STOCK_MEDIA_REWIND, accel_group, action_group,
+ G_CALLBACK (demo_gui_do_seek),
+ build_gvalue_array (2, G_TYPE_OBJECT, gui, G_TYPE_INT, -5)
+ };
+ create_action (rewind_sm);
+
+ forward_sm = &(ActionEntry) {
+ NULL, NULL,
+ "<ctrl>Right", "seek-forward-small",
+ "Forward", "seek +5 seconds",
+ GTK_STOCK_MEDIA_FORWARD, accel_group, action_group,
+ G_CALLBACK (demo_gui_do_seek),
+ build_gvalue_array (2, G_TYPE_OBJECT, gui, G_TYPE_INT, 5)
+ };
+ create_action (forward_sm);
+
+ forward_lg = &(ActionEntry) {
+ NULL, NULL,
+ "<ctrl><shift>Right", "seek-forward-large",
+ "Forward (large)", "seek +30 seconds",
+ GTK_STOCK_MEDIA_FORWARD, accel_group, action_group,
+ G_CALLBACK (demo_gui_do_seek),
+ build_gvalue_array (2, G_TYPE_OBJECT, gui, G_TYPE_INT, 30)
+ };
+ create_action (forward_lg);
+
+ pause = &(ActionEntry) {
+ NULL, NULL,
+ "p", "pause",
+ "Pause", "Pause playback",
+ GTK_STOCK_MEDIA_PAUSE, accel_group, action_group,
+ G_CALLBACK (demo_gui_do_pause), gui};
+ create_action (pause);
+
+ play = &(ActionEntry) {
+ NULL, NULL,
+ "<ctrl>p", "play",
+ "Play", "Start Playback",
+ GTK_STOCK_MEDIA_PLAY, accel_group, action_group,
+ G_CALLBACK (demo_gui_do_play), gui};
+ create_action (play);
+ gtk_widget_size_request (pause->button, &pause_size);
+ gtk_widget_set_size_request (play->button, pause_size.width, -1);
+
+ play_pause = &(ActionEntry) {
+ NULL, NULL,
+ "space", "play-pause",
+ "Play/Pause", "Toggle playback",
+ NULL, accel_group, action_group,
+ G_CALLBACK (demo_gui_do_play_pause), gui};
+ create_action (play_pause);
+
+ open_file = &(ActionEntry) {
+ NULL, NULL,
+ "<ctrl>o", "open-file",
+ "Open File", "Open file for playing",
+ GTK_STOCK_OPEN, accel_group, action_group,
+ G_CALLBACK (demo_gui_do_open_file), gui};
+ create_action (open_file);
+
+ playlist_prev = &(ActionEntry) {
+ NULL, NULL,
+ "less", "playlist-previous",
+ "Previous", "Previous in playlist",
+ GTK_STOCK_MEDIA_PREVIOUS, accel_group, action_group,
+ G_CALLBACK (demo_gui_do_playlist_prev), gui};
+ create_action (playlist_prev);
+
+ playlist_next = &(ActionEntry) {
+ NULL, NULL,
+ "greater", "playlist-next",
+ "Next", "Next in playlist",
+ GTK_STOCK_MEDIA_NEXT, accel_group, action_group,
+ G_CALLBACK (demo_gui_do_playlist_next), gui};
+ create_action (playlist_next);
+
+ quit = &(ActionEntry) {
+ NULL, NULL,
+ "q", "quit",
+ "Quit", "Quit demo",
+ GTK_STOCK_QUIT, accel_group, action_group,
+ G_CALLBACK (demo_gui_do_quit), gui};
+ create_action (quit);
+
+ about = &(ActionEntry) {
+ NULL, NULL,
+ "<ctrl>h", "about",
+ "About", "About gst-scaletemo-demo",
+ GTK_STOCK_ABOUT, accel_group, action_group,
+ G_CALLBACK (demo_gui_do_about_dialog), gui};
+ create_action (about);
+
+ rate_entry = gtk_entry_new ();
+ rate_label = gtk_label_new ("Rate:");
+ gtk_entry_set_max_length (GTK_ENTRY (rate_entry), 5);
+ gtk_entry_set_text (GTK_ENTRY (rate_entry), "1.0");
+ gtk_entry_set_width_chars (GTK_ENTRY (rate_entry), 5);
+ g_signal_connect (G_OBJECT (rate_entry), "activate",
+ G_CALLBACK (demo_gui_do_rate_entered), gui);
+
+ toolbox = gtk_hbox_new (FALSE, 0);
+ gtk_box_pack_start (GTK_BOX (toolbox), slower_sm->button, FALSE, FALSE, 2);
+ gtk_box_pack_start (GTK_BOX (toolbox), rate_label, FALSE, FALSE, 2);
+ gtk_box_pack_start (GTK_BOX (toolbox), rate_entry, FALSE, FALSE, 2);
+ gtk_box_pack_start (GTK_BOX (toolbox), faster_sm->button, FALSE, FALSE, 2);
+ gtk_box_pack_start (GTK_BOX (toolbox), normal->button, FALSE, FALSE, 2);
+
+
+ stride_ui =
+ gtk_spin_button_new (GTK_ADJUSTMENT (gtk_adjustment_new (60, 1, 1000, 1,
+ 10, 0)), 0, 0);
+ overlap_ui =
+ gtk_spin_button_new (GTK_ADJUSTMENT (gtk_adjustment_new (20, 0, 100, 5,
+ 10, .00001)), 0, 0);
+ search_ui =
+ gtk_spin_button_new (GTK_ADJUSTMENT (gtk_adjustment_new (14, 0, 1000, 1,
+ 10, 0)), 0, 0);
+ gtk_widget_set_sensitive (stride_ui, FALSE);
+ gtk_widget_set_sensitive (overlap_ui, FALSE);
+ gtk_widget_set_sensitive (search_ui, FALSE);
+ g_signal_connect (G_OBJECT (stride_ui), "output",
+ G_CALLBACK (demo_gui_request_set_stride), gui);
+ g_signal_connect (G_OBJECT (overlap_ui), "output",
+ G_CALLBACK (demo_gui_request_set_overlap), gui);
+ g_signal_connect (G_OBJECT (search_ui), "output",
+ G_CALLBACK (demo_gui_request_set_search), gui);
+ g_signal_connect (G_OBJECT (priv->player), "notify::stride",
+ G_CALLBACK (demo_gui_stride_changed), build_gvalue_array (2,
+ G_TYPE_OBJECT, gui, G_TYPE_OBJECT, stride_ui));
+ g_signal_connect (G_OBJECT (priv->player), "notify::overlap",
+ G_CALLBACK (demo_gui_overlap_changed), build_gvalue_array (2,
+ G_TYPE_OBJECT, gui, G_TYPE_OBJECT, overlap_ui));
+ g_signal_connect (G_OBJECT (priv->player), "notify::search",
+ G_CALLBACK (demo_gui_search_changed), build_gvalue_array (2,
+ G_TYPE_OBJECT, gui, G_TYPE_OBJECT, search_ui));
+ propbox = gtk_hbox_new (FALSE, 0);
+ adv_check = gtk_check_button_new ();
+ gtk_box_pack_start (GTK_BOX (propbox), gtk_label_new ("stride:"), FALSE,
+ FALSE, 2);
+ gtk_box_pack_start (GTK_BOX (propbox), stride_ui, FALSE, FALSE, 2);
+ gtk_box_pack_start (GTK_BOX (propbox), gtk_label_new ("overlap:"), FALSE,
+ FALSE, 2);
+ gtk_box_pack_start (GTK_BOX (propbox), overlap_ui, FALSE, FALSE, 2);
+ gtk_box_pack_start (GTK_BOX (propbox), gtk_label_new ("search:"), FALSE,
+ FALSE, 2);
+ gtk_box_pack_start (GTK_BOX (propbox), search_ui, FALSE, FALSE, 2);
+ gtk_box_pack_start (GTK_BOX (propbox), adv_check, FALSE, FALSE, 2);
+
+ toggle_advanced =
+ GTK_ACTION (gtk_toggle_action_new ("advanced", "Enable Parameters",
+ "Toggle advanced controls", 0));
+ gtk_action_group_add_action_with_accel (action_group, toggle_advanced,
+ "<ctrl>a");
+ gtk_action_set_accel_group (toggle_advanced, accel_group);
+ gtk_action_connect_accelerator (toggle_advanced);
+ gtk_toggle_action_set_active (GTK_TOGGLE_ACTION (toggle_advanced), FALSE);
+ gtk_action_connect_proxy (toggle_advanced, adv_check);
+ g_signal_connect (G_OBJECT (toggle_advanced), "activate",
+ G_CALLBACK (demo_gui_do_toggle_advanced), build_gvalue_array (4,
+ G_TYPE_OBJECT, gui, G_TYPE_OBJECT, stride_ui, G_TYPE_OBJECT,
+ overlap_ui, G_TYPE_OBJECT, search_ui));
+
+ toggle_disabled =
+ GTK_ACTION (gtk_toggle_action_new ("disabled", "Disable Scaletempo",
+ "Toggle disabling scaletempo", 0));
+ gtk_action_group_add_action_with_accel (action_group, toggle_disabled,
+ "<ctrl>d");
+ gtk_action_set_accel_group (toggle_disabled, accel_group);
+ gtk_action_connect_accelerator (toggle_disabled);
+ gtk_toggle_action_set_active (GTK_TOGGLE_ACTION (toggle_disabled), FALSE);
+ disabled_check = gtk_check_button_new ();
+ gtk_action_connect_proxy (toggle_disabled, disabled_check);
+ g_signal_connect (G_OBJECT (toggle_disabled), "activate",
+ G_CALLBACK (demo_gui_do_toggle_disabled), build_gvalue_array (3,
+ G_TYPE_OBJECT, gui, G_TYPE_OBJECT, toggle_advanced, G_TYPE_OBJECT,
+ propbox));
+ gtk_box_pack_start (GTK_BOX (toolbox), disabled_check, FALSE, FALSE, 2);
+
+
+ media_controls = gtk_hbox_new (FALSE, 0);
+ gtk_box_pack_start (GTK_BOX (media_controls), playlist_prev->button, FALSE,
+ FALSE, 2);
+ gtk_box_pack_start (GTK_BOX (media_controls), rewind_sm->button, FALSE, FALSE,
+ 2);
+ gtk_box_pack_start (GTK_BOX (media_controls), play->button, FALSE, FALSE, 2);
+ gtk_box_pack_start (GTK_BOX (media_controls), pause->button, FALSE, FALSE, 2);
+ gtk_box_pack_start (GTK_BOX (media_controls), forward_sm->button, FALSE,
+ FALSE, 2);
+ gtk_box_pack_start (GTK_BOX (media_controls), playlist_next->button, FALSE,
+ FALSE, 2);
+
+ amount_played = gtk_label_new ("?:??:??");
+ amount_to_play = gtk_label_new ("-?:??:??");
+ gtk_label_set_width_chars (GTK_LABEL (amount_played), 8);
+ gtk_label_set_width_chars (GTK_LABEL (amount_to_play), 8);
+ gtk_misc_set_alignment (GTK_MISC (amount_played), 1, 1);
+ gtk_misc_set_alignment (GTK_MISC (amount_to_play), 0, 1);
+ seek_range =
+ gtk_hscale_new (GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 5.0,
+ 30.0, 0.00)));
+ gtk_range_set_update_policy (GTK_RANGE (seek_range),
+ GTK_UPDATE_DISCONTINUOUS);
+ seek_bar = gtk_hbox_new (FALSE, 0);
+ gtk_box_pack_start (GTK_BOX (seek_bar), amount_played, FALSE, FALSE, 2);
+ gtk_box_pack_start (GTK_BOX (seek_bar), seek_range, TRUE, TRUE, 2);
+ gtk_box_pack_start (GTK_BOX (seek_bar), amount_to_play, FALSE, FALSE, 2);
+ g_signal_connect (G_OBJECT (seek_range), "format-value",
+ G_CALLBACK (demo_gui_seek_bar_format), gui);
+ g_signal_connect (G_OBJECT (seek_range), "change-value",
+ G_CALLBACK (demo_gui_seek_bar_change), gui);
+
+ status_bar = gtk_statusbar_new ();
+
+ /* Menubar */
+ file_menu = gtk_menu_new ();
+ gtk_menu_set_accel_group (GTK_MENU (file_menu), accel_group);
+ gtk_menu_shell_append (GTK_MENU_SHELL (file_menu),
+ gtk_action_create_menu_item (open_file->action));
+ gtk_menu_shell_append (GTK_MENU_SHELL (file_menu),
+ gtk_action_create_menu_item (about->action));
+ gtk_menu_shell_append (GTK_MENU_SHELL (file_menu),
+ gtk_action_create_menu_item (quit->action));
+ file_menu_item = gtk_menu_item_new_with_mnemonic ("_File");
+ gtk_menu_item_set_submenu (GTK_MENU_ITEM (file_menu_item), file_menu);
+
+ media_menu = gtk_menu_new ();
+ gtk_menu_set_accel_group (GTK_MENU (media_menu), accel_group);
+ gtk_menu_shell_append (GTK_MENU_SHELL (media_menu),
+ gtk_action_create_menu_item (rewind_lg->action));
+ gtk_menu_shell_append (GTK_MENU_SHELL (media_menu),
+ gtk_action_create_menu_item (rewind_sm->action));
+ gtk_menu_shell_append (GTK_MENU_SHELL (media_menu),
+ gtk_action_create_menu_item (forward_sm->action));
+ gtk_menu_shell_append (GTK_MENU_SHELL (media_menu),
+ gtk_action_create_menu_item (forward_lg->action));
+ gtk_menu_shell_append (GTK_MENU_SHELL (media_menu),
+ gtk_action_create_menu_item (play->action));
+ gtk_menu_shell_append (GTK_MENU_SHELL (media_menu),
+ gtk_action_create_menu_item (pause->action));
+ gtk_menu_shell_append (GTK_MENU_SHELL (media_menu),
+ gtk_action_create_menu_item (play_pause->action));
+ gtk_menu_shell_append (GTK_MENU_SHELL (media_menu),
+ gtk_action_create_menu_item (playlist_prev->action));
+ gtk_menu_shell_append (GTK_MENU_SHELL (media_menu),
+ gtk_action_create_menu_item (playlist_next->action));
+ media_menu_item = gtk_menu_item_new_with_mnemonic ("_Media");
+ gtk_menu_item_set_submenu (GTK_MENU_ITEM (media_menu_item), media_menu);
+
+ demo_menu = gtk_menu_new ();
+ gtk_menu_set_accel_group (GTK_MENU (demo_menu), accel_group);
+ gtk_menu_shell_append (GTK_MENU_SHELL (demo_menu),
+ gtk_action_create_menu_item (faster_lg->action));
+ gtk_menu_shell_append (GTK_MENU_SHELL (demo_menu),
+ gtk_action_create_menu_item (faster_sm->action));
+ gtk_menu_shell_append (GTK_MENU_SHELL (demo_menu),
+ gtk_action_create_menu_item (slower_sm->action));
+ gtk_menu_shell_append (GTK_MENU_SHELL (demo_menu),
+ gtk_action_create_menu_item (slower_lg->action));
+ gtk_menu_shell_append (GTK_MENU_SHELL (demo_menu),
+ gtk_action_create_menu_item (normal->action));
+ gtk_menu_shell_append (GTK_MENU_SHELL (demo_menu),
+ gtk_action_create_menu_item (toggle_disabled));
+ gtk_menu_shell_append (GTK_MENU_SHELL (demo_menu),
+ gtk_action_create_menu_item (toggle_advanced));
+ demo_menu_item = gtk_menu_item_new_with_mnemonic ("_Scaletempo");
+ gtk_menu_item_set_submenu (GTK_MENU_ITEM (demo_menu_item), demo_menu);
+
+ menu_bar = gtk_menu_bar_new ();
+ gtk_menu_shell_append (GTK_MENU_SHELL (menu_bar), file_menu_item);
+ gtk_menu_shell_append (GTK_MENU_SHELL (menu_bar), media_menu_item);
+ gtk_menu_shell_append (GTK_MENU_SHELL (menu_bar), demo_menu_item);
+
+ /* Toplevel Window */
+ gtk_window_set_title (GTK_WINDOW (window), "Scaletempo Demo");
+ toplevel_box = gtk_vbox_new (FALSE, 0);
+ gtk_container_set_border_width (GTK_CONTAINER (toplevel_box), 3);
+ gtk_container_add (GTK_CONTAINER (window), toplevel_box);
+ gtk_box_pack_start (GTK_BOX (toplevel_box), menu_bar, FALSE, FALSE, 2);
+ gtk_box_pack_start (GTK_BOX (toplevel_box), media_controls, FALSE, FALSE, 2);
+ gtk_box_pack_start (GTK_BOX (toplevel_box), toolbox, FALSE, FALSE, 2);
+ gtk_box_pack_start (GTK_BOX (toplevel_box), propbox, FALSE, FALSE, 2);
+ gtk_box_pack_start (GTK_BOX (toplevel_box), seek_bar, FALSE, FALSE, 2);
+ gtk_box_pack_start (GTK_BOX (toplevel_box), status_bar, FALSE, FALSE, 2);
+
+ priv->window = window;
+ priv->rate_entry = GTK_ENTRY (rate_entry);
+ priv->status_bar = GTK_STATUSBAR (status_bar);
+ priv->seek_range = GTK_RANGE (seek_range);
+ priv->amount_played = GTK_LABEL (amount_played);
+ priv->amount_to_play = GTK_LABEL (amount_to_play);
+ priv->play_action = GTK_ACTION (play->action);
+ priv->pause_action = GTK_ACTION (pause->action);
+ priv->open_file = GTK_ACTION (open_file->action);
+ priv->playlist_next = GTK_ACTION (playlist_next->action);
+
+ gtk_action_set_sensitive (priv->pause_action, FALSE);
+ gtk_action_set_visible (priv->pause_action, FALSE);
+
+ gtk_widget_show_all (window);
+ gtk_widget_grab_focus (seek_range);
+ gtk_action_activate (priv->playlist_next);
+ status_bar_printf (GTK_STATUSBAR (status_bar), 5,
+ "Welcome to the Scaletempo demo.");
+
+ if (!g_thread_create ((GThreadFunc) gtk_main, NULL, FALSE, &error)) {
+ g_signal_emit (gui, demo_gui_signals[SIGNAL_ERROR], 0, error->message);
+ }
+}
+
+
+/* Method wrappers */
+void
+demo_gui_set_player (DemoGui * gui, DemoPlayer * player)
+{
+ g_return_if_fail (DEMO_IS_GUI (gui));
+ g_return_if_fail (DEMO_IS_PLAYER (player));
+
+ DEMO_GUI_GET_CLASS (gui)->set_player (gui, player);
+}
+
+void
+demo_gui_set_playlist (DemoGui * gui, GList * uris)
+{
+ g_return_if_fail (DEMO_IS_GUI (gui));
+
+ DEMO_GUI_GET_CLASS (gui)->set_playlist (gui, uris);
+}
+
+void
+demo_gui_show (DemoGui * gui)
+{
+ g_return_if_fail (DEMO_IS_GUI (gui));
+
+ DEMO_GUI_GET_CLASS (gui)->show (gui);
+}
+
+
+
+/* GObject overrides */
+static void
+demo_gui_get_property (GObject * object,
+ guint property_id, GValue * value, GParamSpec * pspec)
+{
+ //DemoGui *gui = DEMO_GUI (object);
+ switch (property_id) {
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ break;
+ }
+}
+
+static void
+demo_gui_set_property (GObject * object,
+ guint property_id, const GValue * value, GParamSpec * pspec)
+{
+ //DemoGui *gui = DEMO_GUI (object);
+ switch (property_id) {
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ break;
+ }
+}
+
+
+/* GTypeInfo functions */
+static void
+demo_gui_init (GTypeInstance * instance, gpointer klass)
+{
+ DemoGui *gui = (DemoGui *) instance;
+
+ DemoGuiPrivate *priv = DEMO_GUI_GET_PRIVATE (gui);
+ priv->player = NULL;
+ priv->uris = NULL;
+ priv->now_playing = NULL;
+ priv->is_playing = FALSE;
+ priv->window = NULL;
+ priv->rate_entry = NULL;
+ priv->position_updater_id = 0;
+ priv->seek_range = NULL;
+ priv->amount_played = NULL;
+ priv->amount_to_play = NULL;
+}
+
+static void
+demo_gui_class_init (gpointer klass, gpointer class_data)
+{
+ DemoGuiClass *gui_class = (DemoGuiClass *) klass;
+ GObjectClass *as_object_class = G_OBJECT_CLASS (klass);
+ GType type;
+
+ g_type_class_add_private (klass, sizeof (DemoGuiPrivate));
+
+ /* DemiPlayer */
+ gui_class->set_player = demo_gui_set_player_func;
+ gui_class->set_playlist = demo_gui_set_playlist_func;
+ gui_class->show = demo_gui_show_func;
+
+ /* GObject */
+ as_object_class->get_property = demo_gui_get_property;
+ as_object_class->set_property = demo_gui_set_property;
+
+ /* Properties */
+
+ /* Signals */
+ type = G_TYPE_FROM_CLASS (klass);
+ demo_gui_signals[SIGNAL_ERROR] = g_signal_new ("error", type,
+ G_SIGNAL_RUN_FIRST, 0, NULL, NULL,
+ g_cclosure_marshal_VOID__STRING, G_TYPE_NONE, 1, G_TYPE_STRING);
+
+ demo_gui_signals[SIGNAL_QUITING] = g_signal_new ("quiting", type,
+ G_SIGNAL_RUN_FIRST, 0, NULL, NULL,
+ g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0, NULL);
+}
+
+GType
+demo_gui_get_type (void)
+{
+ static GType type = 0;
+ if (G_UNLIKELY (type == 0)) {
+ static const GTypeInfo info = {
+ sizeof /* Class */ (DemoGuiClass),
+ (GBaseInitFunc) NULL,
+ (GBaseFinalizeFunc) NULL,
+ (GClassInitFunc) demo_gui_class_init,
+ (GClassFinalizeFunc) NULL,
+ (gconstpointer) NULL, /* class_data */
+ sizeof /* Instance */ (DemoGui),
+ /* n_preallocs */ 0,
+ (GInstanceInitFunc) demo_gui_init,
+ (const GTypeValueTable *) NULL
+ };
+ type = g_type_register_static (G_TYPE_OBJECT, "DemoGui", &info, 0);
+ }
+ return type;
+}
--- /dev/null
+/* demo-gui.h
+ * Copyright (C) 2008 Rov Juvano <rovjuvano@users.sourceforge.net>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __DEMO_GUI_H_INCLUDED_
+#define __DEMO_GUI_H_INCLUDED_
+
+#include <glib-object.h>
+#include "demo-player.h"
+
+G_BEGIN_DECLS
+
+#define DEMO_TYPE_GUI (demo_gui_get_type())
+#define DEMO_GUI(o) (G_TYPE_CHECK_INSTANCE_CAST((o), DEMO_TYPE_GUI, DemoGui))
+#define DEMO_IS_GUI(o) (G_TYPE_CHECK_INSTANCE_TYPE((o), DEMO_TYPE_GUI))
+#define DEMO_GUI_TYPE(o) (G_TYPE_FROM_INSTANCE (o))
+#define DEMO_GUI_TYPE_NAME(o) (g_type_name (DEMO_GUI_GUI (o)))
+
+#define DEMO_GUI_CLASS(c) (G_TYPE_CHECK_CLASS_CAST((c), DEMO_TYPE_GUI, DemoGuiClass))
+#define DEMO_IS_GUI_CLASS(c) (G_TYPE_CHECK_CLASS_TYPE((c), DEMO_TYPE_GUI))
+#define DEMO_GUI_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), DEMO_TYPE_GUI, DemoGuiClass))
+
+typedef struct _DemoGui DemoGui;
+typedef struct _DemoGuiClass DemoGuiClass;
+
+struct _DemoGui
+{
+ GObject parent;
+};
+
+struct _DemoGuiClass
+{
+ GObjectClass parent;
+ void (*set_player) (DemoGui *gui, DemoPlayer *player);
+ void (*set_playlist) (DemoGui *gui, GList *uris);
+ void (*show) (DemoGui *gui);
+};
+
+GType demo_gui_get_type (void);
+
+void demo_gui_set_player (DemoGui *gui, DemoPlayer *player);
+void demo_gui_set_playlist (DemoGui *gui, GList *uris);
+void demo_gui_show (DemoGui *gui);
+
+G_END_DECLS
+
+#endif /* __DEMO_GUI_H_INCLUDED_ */
--- /dev/null
+/* main.c
+ * Copyright (C) 2008 Rov Juvano <rovjuvano@users.sourceforge.net>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "demo-player.h"
+#include "demo-gui.h"
+
+extern GOptionGroup *gtk_get_option_group (gboolean);
+extern GOptionGroup *gst_init_get_option_group (void);
+
+static void
+handle_error_message (DemoPlayer * player, const gchar * msg, gpointer data)
+{
+ const gchar *format = (const gchar *) data;
+ g_print (format, msg);
+}
+
+static void
+handle_quit (gpointer source, gpointer data)
+{
+ g_main_loop_quit ((GMainLoop *) data);
+}
+
+
+int
+main (int argc, char *argv[])
+{
+ DemoGui *gui;
+ DemoPlayer *player;
+ gchar **uris = NULL;
+ GOptionContext *ctx;
+ GError *err = NULL;
+ GMainLoop *loop;
+
+ const GOptionEntry entries[] = {
+ {G_OPTION_REMAINING, 0, 0, G_OPTION_ARG_FILENAME_ARRAY, &uris,
+ "Special option that collects any remaining arguments for us"},
+ {NULL,}
+ };
+
+ if (!g_thread_supported ())
+ g_thread_init (NULL);
+
+ ctx = g_option_context_new ("uri ...");
+ g_option_context_add_group (ctx, gst_init_get_option_group ());
+ g_option_context_add_group (ctx, gtk_get_option_group (FALSE));
+ g_option_context_add_main_entries (ctx, entries, NULL);
+ if (!g_option_context_parse (ctx, &argc, &argv, &err)) {
+ g_print ("Error initializing: %s\n", err->message);
+ g_error_free (err);
+ return -1;
+ }
+ g_option_context_free (ctx);
+
+ gui = g_object_new (DEMO_TYPE_GUI, NULL);
+ player = g_object_new (DEMO_TYPE_PLAYER, NULL);
+ g_signal_connect (player, "error", G_CALLBACK (handle_error_message),
+ "PLAYER ERROR: %s\n");
+ g_signal_connect (gui, "error", G_CALLBACK (handle_error_message),
+ "GUI ERROR: %s\n");
+ demo_gui_set_player (gui, player);
+
+ loop = g_main_loop_new (NULL, FALSE);
+ g_signal_connect (gui, "quiting", G_CALLBACK (handle_quit), loop);
+
+ if (uris != NULL) {
+ int i, num = g_strv_length (uris);
+ GList *uri_list = NULL;
+ for (i = 0; i < num; i++) {
+ uri_list = g_list_append (uri_list, uris[i]);
+ }
+ demo_gui_set_playlist (gui, uri_list);
+ }
+ demo_gui_show (gui);
+ g_main_loop_run (loop);
+
+ return 0;
+}
--- /dev/null
+/* demo-player.c
+ * Copyright (C) 2008 Rov Juvano <rovjuvano@users.sourceforge.net>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "demo-player.h"
+#include "gst/gst.h"
+
+#undef G_LOG_DOMAIN
+#define G_LOG_DOMAIN "demo-player"
+
+enum
+{
+ SIGNAL_ERROR,
+ SIGNAL_RATE_CHANGE,
+ SIGNAL_PLAYING_STARTED,
+ SIGNAL_PLAYING_PAUSED,
+ SIGNAL_PLAYING_ENDED,
+ LAST_SIGNAL
+};
+static guint demo_player_signals[LAST_SIGNAL] = { 0 };
+
+enum
+{
+ PROP_0,
+ PROP_RATE,
+ PROP_STRIDE,
+ PROP_OVERLAP,
+ PROP_SEARCH,
+ PROP_DISABLED
+};
+
+typedef struct _DemoPlayerPrivate
+{
+ gdouble rate;
+ GstElement *scaletempo;
+ GstElement *pipeline;
+ gboolean is_disabled;
+ GstElement *scaletempo_line;
+ GstElement *scalerate_line;
+ gboolean ignore_state_change;
+} DemoPlayerPrivate;
+
+#define DEMO_PLAYER_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), DEMO_TYPE_PLAYER, DemoPlayerPrivate))
+
+
+static gboolean
+no_pipeline (DemoPlayer * player)
+{
+ DemoPlayerPrivate *priv = DEMO_PLAYER_GET_PRIVATE (player);
+ if (!priv->pipeline) {
+ g_signal_emit (player, demo_player_signals[SIGNAL_ERROR], 0,
+ "No media loaded");
+ return TRUE;
+ }
+ return FALSE;
+}
+
+static gboolean
+demo_player_event_listener (GstElement * host, GstEvent * event, gpointer data)
+{
+ DemoPlayer *player = DEMO_PLAYER (data);
+ DemoPlayerPrivate *priv = DEMO_PLAYER_GET_PRIVATE (player);
+
+ if (GST_EVENT_TYPE (event) == GST_EVENT_NEWSEGMENT) {
+ gdouble rate, applied_rate;
+ gdouble new_rate;
+
+ gst_event_parse_new_segment_full (event, NULL, &rate, &applied_rate, NULL,
+ NULL, NULL, NULL);
+ new_rate = rate * applied_rate;
+ if (priv->rate != new_rate) {
+ priv->rate = new_rate;
+ g_signal_emit (player, demo_player_signals[SIGNAL_RATE_CHANGE], 0,
+ new_rate);
+ }
+ }
+
+ return TRUE;
+}
+
+static void
+demo_player_state_changed_cb (GstBus * bus, GstMessage * message, gpointer data)
+{
+ DemoPlayer *player = DEMO_PLAYER (data);
+ DemoPlayerPrivate *priv = DEMO_PLAYER_GET_PRIVATE (player);
+ GstState old, new, pending;
+
+ if (GST_ELEMENT (GST_MESSAGE_SRC (message)) != priv->pipeline)
+ return;
+
+ gst_message_parse_state_changed (message, &old, &new, &pending);
+
+ if (pending == GST_STATE_VOID_PENDING) {
+ if (priv->ignore_state_change) {
+ priv->ignore_state_change = FALSE;
+ } else if (new == GST_STATE_PAUSED) {
+ g_signal_emit (player, demo_player_signals[SIGNAL_PLAYING_PAUSED], 0);
+ } else if (new == GST_STATE_PLAYING) {
+ g_signal_emit (player, demo_player_signals[SIGNAL_PLAYING_STARTED], 0);
+ }
+ }
+}
+
+static void
+demo_player_eos_cb (GstBus * bus, GstMessage * message, gpointer data)
+{
+ DemoPlayer *player = DEMO_PLAYER (data);
+ g_signal_emit (player, demo_player_signals[SIGNAL_PLAYING_ENDED], 0);
+}
+
+#define MAKE_ELEMENT(line, var, type, name) \
+ if ( !(var = gst_element_factory_make (type, name) ) ) { \
+ g_print ("element could not be created: %s/%s\n", type, name); \
+ return; \
+ } \
+ if (line) gst_bin_add (GST_BIN (line), var);
+
+#define LINK_ELEMENTS(src, sink) \
+ if (!gst_element_link (src, sink)) { \
+ g_warning ("Failed to link elements: %s -> %s", \
+ GST_ELEMENT_NAME (src), GST_ELEMENT_NAME (sink) ); \
+ return; \
+ }
+
+static void
+demo_player_build_pipeline (DemoPlayer * player)
+{
+ DemoPlayerPrivate *priv = DEMO_PLAYER_GET_PRIVATE (player);
+ GstElement *filter, *playbin, *vsink, *audioline, *format, *resample, *asink;
+ GstPlugin *gconf;
+ GstBus *bus;
+ gboolean has_gconf;
+ const gchar *audiosink_name;
+ GstPad *ghostpad;
+
+ priv->pipeline = NULL;
+ if (!priv->scaletempo) {
+ return;
+ }
+
+ filter = priv->scaletempo;
+
+ MAKE_ELEMENT (NULL, playbin, "playbin", "playbin");
+
+ gconf = gst_default_registry_find_plugin ("gconfelements");
+ has_gconf = (gconf != NULL);
+ gst_object_unref (gconf);
+
+ if (has_gconf) {
+ MAKE_ELEMENT (NULL, vsink, "gconfvideosink", "vsink");
+ g_object_set (G_OBJECT (playbin), "video_sink", vsink, NULL);
+ }
+ audiosink_name = has_gconf ? "gconfaudiosink" : "autoaudiosink";
+
+ audioline = gst_bin_new ("audioline");
+ gst_bin_add (GST_BIN (audioline), filter);
+ MAKE_ELEMENT (audioline, format, "audioconvert", "format");
+ MAKE_ELEMENT (audioline, resample, "audioresample", "resample");
+ MAKE_ELEMENT (audioline, asink, audiosink_name, "audio_sink");
+ LINK_ELEMENTS (filter, format);
+ LINK_ELEMENTS (format, resample);
+ LINK_ELEMENTS (resample, asink);
+
+ gst_pad_add_event_probe (gst_element_get_static_pad (asink, "sink"),
+ G_CALLBACK (demo_player_event_listener), player);
+
+ ghostpad = gst_element_get_static_pad (filter, "sink");
+ gst_element_add_pad (audioline, gst_ghost_pad_new ("sink", ghostpad));
+ gst_object_unref (ghostpad);
+ g_object_set (G_OBJECT (playbin), "audio-sink", audioline, NULL);
+
+ bus = gst_pipeline_get_bus (GST_PIPELINE (playbin));
+ gst_bus_add_signal_watch (bus);
+ g_signal_connect (bus, "message::state-changed",
+ G_CALLBACK (demo_player_state_changed_cb), player);
+ g_signal_connect (bus, "message::eos", G_CALLBACK (demo_player_eos_cb),
+ player);
+ gst_object_unref (bus);
+
+ priv->scaletempo = filter;
+ priv->pipeline = playbin;
+
+ priv->scaletempo_line = audioline;
+ MAKE_ELEMENT (NULL, priv->scalerate_line, "gconfaudiosink",
+ "scaling_audio_sink");
+ gst_pad_add_event_probe (gst_element_get_static_pad (priv->scalerate_line,
+ "sink"), G_CALLBACK (demo_player_event_listener), player);
+ g_object_ref (priv->scaletempo_line);
+ g_object_ref (priv->scalerate_line);
+}
+
+
+/* method implementations */
+static void
+_set_rate (DemoPlayer * player, gdouble new_rate, gint second)
+{
+ DemoPlayerPrivate *priv;
+ gint64 pos;
+ GstSeekType seek_type;
+
+
+ if (new_rate == 0) {
+ g_signal_emit (player, demo_player_signals[SIGNAL_ERROR], 0,
+ "Cannot set playback to zero. Pausing instead.");
+ demo_player_pause (player);
+ }
+
+ priv = DEMO_PLAYER_GET_PRIVATE (player);
+
+ if (second < 0) {
+ GstFormat fmt = GST_FORMAT_TIME;
+ seek_type = GST_SEEK_TYPE_SET;
+ if (!gst_element_query_position (priv->pipeline, &fmt, &pos)) {
+ // This should be the default but too many upstream elements seek anyway
+ pos = GST_CLOCK_TIME_NONE;
+ seek_type = GST_SEEK_TYPE_NONE;
+ }
+ } else {
+ seek_type = GST_SEEK_TYPE_SET;
+ pos = second * GST_SECOND;
+ }
+
+ if (!gst_element_seek (priv->pipeline, new_rate,
+ GST_FORMAT_TIME, GST_SEEK_FLAG_FLUSH | GST_SEEK_FLAG_ACCURATE,
+ seek_type, pos, GST_SEEK_TYPE_NONE, GST_CLOCK_TIME_NONE)) {
+ g_signal_emit (player, demo_player_signals[SIGNAL_ERROR], 0,
+ "Unable to change playback rate");
+ } else {
+ priv->ignore_state_change = TRUE;
+ }
+}
+
+static void
+demo_player_scale_rate_func (DemoPlayer * player, gdouble scale)
+{
+ DemoPlayerPrivate *priv;
+ if (no_pipeline (player))
+ return;
+
+ priv = DEMO_PLAYER_GET_PRIVATE (player);
+
+ if (scale != 1.0) {
+ g_message ("Scaling Rate by: %3.2f", scale);
+ _set_rate (player, priv->rate * scale, -1);
+ }
+}
+
+static void
+demo_player_set_rate_func (DemoPlayer * player, gdouble new_rate)
+{
+ DemoPlayerPrivate *priv;
+
+ if (no_pipeline (player))
+ return;
+
+ priv = DEMO_PLAYER_GET_PRIVATE (player);
+
+ if (priv->rate != new_rate) {
+ g_message ("Setting Rate to: %3.2f", new_rate);
+ _set_rate (player, new_rate, -1);
+ }
+}
+
+static gboolean
+_set_state_and_wait (DemoPlayer * player,
+ GstState new_state, GstClockTime timeout, const gchar * error_msg)
+{
+ DemoPlayerPrivate *priv = DEMO_PLAYER_GET_PRIVATE (player);
+ GstStateChangeReturn ret = gst_element_set_state (priv->pipeline, new_state);
+ if (ret == GST_STATE_CHANGE_ASYNC) {
+ ret = gst_element_get_state (priv->pipeline, NULL, NULL, timeout);
+ }
+ if (ret != GST_STATE_CHANGE_SUCCESS) {
+ g_signal_emit (player, demo_player_signals[SIGNAL_ERROR], 0, error_msg);
+ return FALSE;
+ }
+ return TRUE;
+}
+
+static void
+demo_player_load_uri_func (DemoPlayer * player, gchar * uri)
+{
+ DemoPlayerPrivate *priv = DEMO_PLAYER_GET_PRIVATE (player);
+ GstState end_state;
+ gdouble rate;
+
+ if (!priv->pipeline) {
+ demo_player_build_pipeline (player);
+ if (!priv->pipeline) {
+ g_signal_emit (player, demo_player_signals[SIGNAL_ERROR], 0,
+ "Could not build player");
+ return;
+ }
+ }
+ if (!g_str_has_prefix (uri, "file:///")) {
+ GError *err = NULL;
+ if (g_path_is_absolute (uri)) {
+ uri = g_filename_to_uri (uri, NULL, &err);
+ } else {
+ gchar *curdir = g_get_current_dir ();
+ gchar *absolute_path = g_strconcat (curdir, G_DIR_SEPARATOR_S, uri, NULL);
+ uri = g_filename_to_uri (absolute_path, NULL, &err);
+ g_free (absolute_path);
+ g_free (curdir);
+ }
+ if (err) {
+ gchar *msg = g_strconcat ("Could not load uri: ", err->message, NULL);
+ g_signal_emit (player, demo_player_signals[SIGNAL_ERROR], 0, msg);
+ return;
+ }
+ }
+
+ g_message ("Loading URI: %s", uri);
+
+ end_state =
+ (GST_STATE (priv->pipeline) ==
+ GST_STATE_PLAYING) ? GST_STATE_PLAYING : GST_STATE_PAUSED;
+ if (!_set_state_and_wait (player, GST_STATE_NULL, 10 * GST_SECOND,
+ "Unable to load uri"))
+ return;
+
+ g_object_set (G_OBJECT (priv->pipeline), "uri", uri, NULL);
+
+ rate = priv->rate;
+ if (rate && rate != 1.0) {
+ _set_state_and_wait (player, GST_STATE_PAUSED, 10 * GST_SECOND,
+ "Unable to keep playback rate");
+ _set_rate (player, rate, -1);
+ }
+
+ gst_element_set_state (priv->pipeline, end_state);
+}
+
+static void
+demo_player_play_func (DemoPlayer * player)
+{
+ DemoPlayerPrivate *priv;
+ GstStateChangeReturn ret;
+
+ if (no_pipeline (player))
+ return;
+
+ priv = DEMO_PLAYER_GET_PRIVATE (player);
+
+ if (GST_STATE (priv->pipeline) == GST_STATE_PLAYING) {
+ g_signal_emit (player, demo_player_signals[SIGNAL_ERROR], 0,
+ "Already playing");
+ return;
+ }
+
+ g_debug ("Starting to Play");
+ ret = gst_element_set_state (priv->pipeline, GST_STATE_PLAYING);
+ if (ret == GST_STATE_CHANGE_FAILURE) {
+ g_signal_emit (player, demo_player_signals[SIGNAL_ERROR], 0,
+ "Unable to start playback");
+ return;
+ }
+}
+
+static void
+demo_player_pause_func (DemoPlayer * player)
+{
+ DemoPlayerPrivate *priv;
+ GstStateChangeReturn ret;
+
+ if (no_pipeline (player))
+ return;
+
+ priv = DEMO_PLAYER_GET_PRIVATE (player);
+
+ if (GST_STATE (priv->pipeline) == GST_STATE_PAUSED) {
+ g_signal_emit (player, demo_player_signals[SIGNAL_ERROR], 0,
+ "Already paused");
+ return;
+ }
+
+ g_debug ("Starting to Pause");
+ ret = gst_element_set_state (priv->pipeline, GST_STATE_PAUSED);
+ if (ret == GST_STATE_CHANGE_FAILURE) {
+ g_signal_emit (player, demo_player_signals[SIGNAL_ERROR], 0,
+ "Unable to pause playback");
+ return;
+ }
+}
+
+static void
+_seek_to (DemoPlayer * player, gint new_second)
+{
+ DemoPlayerPrivate *priv = DEMO_PLAYER_GET_PRIVATE (player);
+ if (!gst_element_seek (priv->pipeline, priv->rate,
+ GST_FORMAT_TIME, GST_SEEK_FLAG_FLUSH,
+ GST_SEEK_TYPE_SET, new_second * GST_SECOND,
+ GST_SEEK_TYPE_NONE, GST_CLOCK_TIME_NONE)) {
+ g_signal_emit (player, demo_player_signals[SIGNAL_ERROR], 0, "Seek failed");
+ return;
+ }
+
+ priv->ignore_state_change = TRUE;
+}
+
+static void
+demo_player_seek_by_func (DemoPlayer * player, gint seconds)
+{
+ gint pos;
+
+ if (no_pipeline (player))
+ return;
+
+ g_debug ("Seeking by: %i", seconds);
+
+ pos = demo_player_get_position (player);
+ if (pos < 0) {
+ g_signal_emit (player, demo_player_signals[SIGNAL_ERROR], 0,
+ "Seek-by failed: could not determine position");
+ return;
+ }
+
+ _seek_to (player, MAX (0, pos + seconds));
+}
+
+static void
+demo_player_seek_to_func (DemoPlayer * player, gint second)
+{
+ gint new_second;
+
+ if (no_pipeline (player))
+ return;
+
+ g_debug ("Seeking to: %i", second);
+
+ if (second < 0) {
+ gint dur = demo_player_get_duration (player);
+ if (dur < 0) {
+ g_signal_emit (player, demo_player_signals[SIGNAL_ERROR], 0,
+ "Seek-to failed: could not determine duration");
+ return;
+ }
+ new_second = MAX (0, dur + second);
+ } else {
+ new_second = second;
+ }
+
+ _seek_to (player, new_second);
+}
+
+static gint
+demo_player_get_position_func (DemoPlayer * player)
+{
+ DemoPlayerPrivate *priv = DEMO_PLAYER_GET_PRIVATE (player);
+ gint64 pos;
+ GstFormat fmt = GST_FORMAT_TIME;
+
+ if (!priv->pipeline)
+ return -1;
+
+ if (!gst_element_query_position (priv->pipeline, &fmt, &pos) || pos < 0) {
+ return -1;
+ }
+
+ return (gint) (pos / GST_SECOND);
+}
+
+static gint
+demo_player_get_duration_func (DemoPlayer * player)
+{
+ DemoPlayerPrivate *priv = DEMO_PLAYER_GET_PRIVATE (player);
+ gint64 dur;
+ GstFormat fmt = GST_FORMAT_TIME;
+
+ if (!priv->pipeline)
+ return -1;
+
+ if (!gst_element_query_duration (priv->pipeline, &fmt, &dur) || dur < 0) {
+ return -1;
+ }
+
+ return (gint) (dur / GST_SECOND);
+}
+
+
+/* Method wrappers */
+void
+demo_player_scale_rate (DemoPlayer * player, gdouble scale)
+{
+ g_return_if_fail (DEMO_IS_PLAYER (player));
+
+ DEMO_PLAYER_GET_CLASS (player)->scale_rate (player, scale);
+}
+
+void
+demo_player_set_rate (DemoPlayer * player, gdouble new_rate)
+{
+ g_return_if_fail (DEMO_IS_PLAYER (player));
+
+ DEMO_PLAYER_GET_CLASS (player)->set_rate (player, new_rate);
+}
+
+void
+demo_player_load_uri (DemoPlayer * player, gchar * uri)
+{
+ g_return_if_fail (DEMO_IS_PLAYER (player));
+
+ DEMO_PLAYER_GET_CLASS (player)->load_uri (player, uri);
+}
+
+void
+demo_player_play (DemoPlayer * player)
+{
+ g_return_if_fail (DEMO_IS_PLAYER (player));
+
+ DEMO_PLAYER_GET_CLASS (player)->play (player);
+}
+
+void
+demo_player_pause (DemoPlayer * player)
+{
+ g_return_if_fail (DEMO_IS_PLAYER (player));
+
+ DEMO_PLAYER_GET_CLASS (player)->pause (player);
+}
+
+void
+demo_player_seek_by (DemoPlayer * player, gint seconds)
+{
+ g_return_if_fail (DEMO_IS_PLAYER (player));
+
+ DEMO_PLAYER_GET_CLASS (player)->seek_by (player, seconds);
+}
+
+void
+demo_player_seek_to (DemoPlayer * player, gint second)
+{
+ g_return_if_fail (DEMO_IS_PLAYER (player));
+
+ DEMO_PLAYER_GET_CLASS (player)->seek_to (player, second);
+}
+
+gint
+demo_player_get_position (DemoPlayer * player)
+{
+ g_return_val_if_fail (DEMO_IS_PLAYER (player), -1);
+
+ return DEMO_PLAYER_GET_CLASS (player)->get_position (player);
+}
+
+gint
+demo_player_get_duration (DemoPlayer * player)
+{
+ g_return_val_if_fail (DEMO_IS_PLAYER (player), -1);
+
+ return DEMO_PLAYER_GET_CLASS (player)->get_duration (player);
+}
+
+/* GObject overrides */
+static void
+demo_player_get_property (GObject * object,
+ guint property_id, GValue * value, GParamSpec * pspec)
+{
+ DemoPlayer *player = DEMO_PLAYER (object);
+ DemoPlayerPrivate *priv = DEMO_PLAYER_GET_PRIVATE (player);
+ switch (property_id) {
+ case PROP_RATE:
+ g_value_set_double (value, priv->rate);
+ break;
+ case PROP_STRIDE:
+ g_object_get_property (G_OBJECT (priv->scaletempo), "stride", value);
+ break;
+ case PROP_OVERLAP:
+ g_object_get_property (G_OBJECT (priv->scaletempo), "overlap", value);
+ break;
+ case PROP_SEARCH:
+ g_object_get_property (G_OBJECT (priv->scaletempo), "search", value);
+ break;
+ case PROP_DISABLED:
+ g_value_set_boolean (value, priv->is_disabled);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ break;
+ }
+}
+
+static void
+demo_player_set_property (GObject * object,
+ guint property_id, const GValue * value, GParamSpec * pspec)
+{
+ DemoPlayer *player = DEMO_PLAYER (object);
+ DemoPlayerPrivate *priv = DEMO_PLAYER_GET_PRIVATE (player);
+ switch (property_id) {
+ case PROP_STRIDE:
+ g_object_set_property (G_OBJECT (priv->scaletempo), "stride", value);
+ break;
+ case PROP_OVERLAP:
+ g_object_set_property (G_OBJECT (priv->scaletempo), "overlap", value);
+ break;
+ case PROP_SEARCH:
+ g_object_set_property (G_OBJECT (priv->scaletempo), "search", value);
+ break;
+ case PROP_DISABLED:{
+ gdouble rate = priv->rate;
+ gint pos = demo_player_get_position (player);
+ GstState end_state;
+ GstElement *new_sink;
+
+ priv->is_disabled = g_value_get_boolean (value);
+
+ g_debug ("Scaletempo: %s", priv->is_disabled ? "disabled" : "enabled");
+
+ end_state =
+ (GST_STATE (priv->pipeline) ==
+ GST_STATE_PLAYING) ? GST_STATE_PLAYING : GST_STATE_PAUSED;
+ if (!_set_state_and_wait (player, GST_STATE_NULL, 10 * GST_SECOND,
+ "Unable to disable"))
+ break;
+
+ new_sink =
+ (priv->is_disabled) ? priv->scalerate_line : priv->scaletempo_line;
+ g_object_set (G_OBJECT (priv->pipeline), "audio-sink", new_sink, NULL);
+
+ if (pos > 0 || (rate && rate != 1.0)) {
+ _set_state_and_wait (player, GST_STATE_PAUSED, 10 * GST_SECOND,
+ "Unable to keep playback position and rate");
+ _set_rate (player, rate, pos);
+ }
+
+ gst_element_set_state (priv->pipeline, end_state);
+ break;
+ }
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ break;
+ }
+}
+
+
+/* GTypeInfo functions */
+static void
+demo_player_init (GTypeInstance * instance, gpointer klass)
+{
+ DemoPlayer *player = (DemoPlayer *) instance;
+ DemoPlayerPrivate *priv = DEMO_PLAYER_GET_PRIVATE (player);
+ priv->scaletempo = gst_element_factory_make ("scaletempo", "scaletempo");
+ if (!priv->scaletempo) {
+ g_error ("Unable to make scaletempo element.");
+ }
+ priv->rate = 1.0;
+ priv->pipeline = NULL;
+ priv->ignore_state_change = FALSE;
+ priv->is_disabled = FALSE;
+}
+
+static void
+demo_player_class_init (gpointer klass, gpointer class_data)
+{
+ DemoPlayerClass *player_class = (DemoPlayerClass *) klass;
+ GObjectClass *as_object_class = G_OBJECT_CLASS (klass);
+ GType type;
+
+ g_type_class_add_private (klass, sizeof (DemoPlayerPrivate));
+
+ /* DemoPlayer */
+ player_class->scale_rate = demo_player_scale_rate_func;
+ player_class->set_rate = demo_player_set_rate_func;
+ player_class->load_uri = demo_player_load_uri_func;
+ player_class->play = demo_player_play_func;
+ player_class->pause = demo_player_pause_func;
+ player_class->seek_by = demo_player_seek_by_func;
+ player_class->seek_to = demo_player_seek_to_func;
+ player_class->get_position = demo_player_get_position_func;
+ player_class->get_duration = demo_player_get_duration_func;
+
+ /* GObject */
+ as_object_class->get_property = demo_player_get_property;
+ as_object_class->set_property = demo_player_set_property;
+
+ /* Properties */
+ g_object_class_install_property (as_object_class, PROP_RATE,
+ g_param_spec_double ("rate", "Rate", "Current playback rate",
+ -128, 128, 1.0, G_PARAM_READABLE));
+
+ g_object_class_install_property (as_object_class, PROP_STRIDE,
+ g_param_spec_uint ("stride", "Stride Length",
+ "Length in milliseconds to output each stride", 1, 10000, 60,
+ G_PARAM_READWRITE));
+
+ g_object_class_install_property (as_object_class, PROP_OVERLAP,
+ g_param_spec_double ("overlap", "Overlap Length",
+ "Percentage of stride to overlap", 0, 1, .2, G_PARAM_READWRITE));
+
+ g_object_class_install_property (as_object_class, PROP_SEARCH,
+ g_param_spec_uint ("search", "Search Length",
+ "Length in milliseconds to search for best overlap position", 0,
+ 10000, 14, G_PARAM_READWRITE));
+
+ g_object_class_install_property (as_object_class, PROP_DISABLED,
+ g_param_spec_boolean ("disabled", "disable scaletempo",
+ "Disable scaletempo and scale bothe tempo and pitch", FALSE,
+ G_PARAM_READWRITE));
+
+ /* Signals */
+ type = G_TYPE_FROM_CLASS (klass);
+ demo_player_signals[SIGNAL_ERROR] = g_signal_new ("error", type,
+ G_SIGNAL_RUN_FIRST, 0, NULL, NULL,
+ g_cclosure_marshal_VOID__STRING, G_TYPE_NONE, 1, G_TYPE_STRING);
+
+ demo_player_signals[SIGNAL_RATE_CHANGE] = g_signal_new ("rate-changed", type,
+ G_SIGNAL_RUN_FIRST, 0, NULL, NULL,
+ g_cclosure_marshal_VOID__DOUBLE, G_TYPE_NONE, 1, G_TYPE_DOUBLE);
+
+ demo_player_signals[SIGNAL_PLAYING_STARTED] =
+ g_signal_new ("playing-started", type, G_SIGNAL_RUN_FIRST, 0, NULL, NULL,
+ g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
+
+ demo_player_signals[SIGNAL_PLAYING_PAUSED] =
+ g_signal_new ("playing-paused", type, G_SIGNAL_RUN_FIRST, 0, NULL, NULL,
+ g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
+
+ demo_player_signals[SIGNAL_PLAYING_ENDED] =
+ g_signal_new ("playing-ended", type, G_SIGNAL_RUN_FIRST, 0, NULL, NULL,
+ g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
+}
+
+GType
+demo_player_get_type (void)
+{
+ static GType type = 0;
+ if (G_UNLIKELY (type == 0)) {
+ static const GTypeInfo info = {
+ sizeof /* Class */ (DemoPlayerClass),
+ (GBaseInitFunc) NULL,
+ (GBaseFinalizeFunc) NULL,
+ (GClassInitFunc) demo_player_class_init,
+ (GClassFinalizeFunc) NULL,
+ (gconstpointer) NULL, /* class_data */
+ sizeof /* Instance */ (DemoPlayer),
+ /* n_preallocs */ 0,
+ (GInstanceInitFunc) demo_player_init,
+ (const GTypeValueTable *) NULL
+ };
+ type = g_type_register_static (G_TYPE_OBJECT, "DemoPlayer", &info, 0);
+ }
+ return type;
+}
--- /dev/null
+/* gui.h
+ * Copyright (C) 2008 Rov Juvano <rovjuvano@users.sourceforge.net>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __DEMO_PLAYER_H_INCLUDED_
+#define __DEMO_PLAYER_H_INCLUDED_
+
+#include <glib-object.h>
+
+G_BEGIN_DECLS
+
+#define DEMO_TYPE_PLAYER (demo_player_get_type())
+#define DEMO_PLAYER(o) (G_TYPE_CHECK_INSTANCE_CAST((o), DEMO_TYPE_PLAYER, DemoPlayer))
+#define DEMO_IS_PLAYER(o) (G_TYPE_CHECK_INSTANCE_TYPE((o), DEMO_TYPE_PLAYER))
+#define DEMO_PLAYER_TYPE(o) (G_TYPE_FROM_INSTANCE (o))
+#define DEMO_PLAYER_TYPE_NAME(o) (g_type_name (DEMO_PLAYER_TYPE (o)))
+
+#define DEMO_PLAYER_CLASS(c) (G_TYPE_CHECK_CLASS_CAST((c), DEMO_TYPE_PLAYER, DemoPlayerClass))
+#define DEMO_IS_PLAYER_CLASS(c) (G_TYPE_CHECK_CLASS_TYPE((c), DEMO_TYPE_PLAYER))
+#define DEMO_PLAYER_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), DEMO_TYPE_PLAYER, DemoPlayerClass))
+
+typedef struct _DemoPlayer DemoPlayer;
+typedef struct _DemoPlayerClass DemoPlayerClass;
+
+struct _DemoPlayer
+{
+ GObject parent;
+};
+
+struct _DemoPlayerClass
+{
+ GObjectClass parent;
+ void (*scale_rate) (DemoPlayer *player, gdouble scale);
+ void (*set_rate) (DemoPlayer *player, gdouble new_rate);
+ void (*load_uri) (DemoPlayer *player, gchar *uri);
+ void (*play) (DemoPlayer *player);
+ void (*pause) (DemoPlayer *player);
+ void (*seek_by) (DemoPlayer *player, gint seconds);
+ void (*seek_to) (DemoPlayer *player, gint seconds);
+ gint (*get_position) (DemoPlayer *player);
+ gint (*get_duration) (DemoPlayer *player);
+};
+
+GType demo_player_get_type (void);
+
+void demo_player_scale_rate (DemoPlayer *player, gdouble scale);
+void demo_player_set_rate (DemoPlayer *player, gdouble new_rate);
+void demo_player_load_uri (DemoPlayer *player, gchar *uri);
+void demo_player_play (DemoPlayer *player);
+void demo_player_pause (DemoPlayer *player);
+void demo_player_seek_by (DemoPlayer *player, gint seconds);
+void demo_player_seek_to (DemoPlayer *player, gint second);
+gint demo_player_get_position (DemoPlayer *player);
+gint demo_player_get_duration (DemoPlayer *player);
+
+G_END_DECLS
+
+#endif /* __DEMO_PLAYER_H_INCLUDED_ */
--- /dev/null
+plugin_LTLIBRARIES = libgstscaletempoplugin.la
+
+# sources used to compile this plug-in
+libgstscaletempoplugin_la_SOURCES = gstscaletempoplugin.c gstscaletempo.c
+
+# flags used to compile this plugin
+# add other _CFLAGS and _LIBS as needed
+libgstscaletempoplugin_la_CFLAGS = $(GST_CFLAGS)
+libgstscaletempoplugin_la_LIBADD = $(GST_LIBS) $(GST_BASE_LIBS)
+libgstscaletempoplugin_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
+
+# headers we need but don't want installed
+noinst_HEADERS = gstscaletempo.h
--- /dev/null
+/*
+ * GStreamer
+ * Copyright (C) 2008 Rov Juvano <rovjuvano@users.sourceforge.net>
+ *
+ * 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.
+ */
+
+/**
+ * SECTION:element-scaletempo
+ *
+ * <refsect2>
+ * <para>
+ * Scale tempo while maintaining pitch
+ * (WSOLA-like technique with cross correlation)
+ * Inspired by SoundTouch library by Olli Parviainen
+ * </para>
+ * <para>
+ * Use Sceletempo to apply playback rates without the chipmunk effect.
+ * </para>
+ * <title>Example pipelines</title>
+ * <para>
+ * <programlisting>
+ * filesrc location=media.ext ! decodebin name=d \
+ * d. ! queue ! audioconvert ! audioresample ! scaletempo ! audioconvert ! audioresample ! autoaudiosink \
+ * d. ! queue ! ffmpegcolorspace ! autovideosink
+ * </programlisting>
+ * OR
+ * <programlisting>
+ * playbin uri=... audio_sink="scaletempo ! audioconvert ! audioresample ! autoaudiosink"
+ * </programlisting>
+ * When an application sends a seek event with rate != 1.0, Scaletempo applies
+ * the rate change by scaling the tempo without scaling the pitch.
+ * </para>
+ * <para>
+ * Scaletempo works by producing audio in constant sized chunks (a "stride") but
+ * consuming chunks proportional to the playback rate.
+ * </para>
+ * <para>
+ * Scaletempo then smooths the output by blending the end of one stride with
+ * the next ("overlap").
+ * </para>
+ * <para>
+ * Scaletempo smooths the overlap further by searching within the input buffer
+ * for the best overlap position. Scaletempo uses a statistical cross correlation
+ * (roughly a dot-product). Scaletempo consumes most of its CPU cycles here.
+ * </para>
+ * </refsect2>
+ */
+
+/*
+ * Note: frame = audio key unit (i.e. one sample for each channel)
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gst/gst.h>
+#include <gst/base/gstbasetransform.h>
+#include <string.h> /* for memset */
+
+#include "gstscaletempo.h"
+
+GST_DEBUG_CATEGORY_STATIC (gst_scaletempo_debug);
+#define GST_CAT_DEFAULT gst_scaletempo_debug
+
+/* Filter signals and args */
+enum
+{
+ LAST_SIGNAL
+};
+
+enum
+{
+ PROP_0,
+ PROP_RATE,
+ PROP_STRIDE,
+ PROP_OVERLAP,
+ PROP_SEARCH,
+};
+
+#define SUPPORTED_CAPS \
+GST_STATIC_CAPS ( \
+ "audio/x-raw-float, " \
+ "rate = (int) [ 1, MAX ], " \
+ "channels = (int) [ 1, MAX ], " \
+ "endianness = (int) BYTE_ORDER, " \
+ "width = (int) 32;" \
+ "audio/x-raw-int, " \
+ "rate = (int) [ 1, MAX ], " \
+ "channels = (int) [ 1, MAX ], " \
+ "endianness = (int) BYTE_ORDER, " \
+ "width = (int) 16, " \
+ "depth = (int) 16, " \
+ "signed = (boolean) true;" \
+)
+
+static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
+ GST_PAD_SINK,
+ GST_PAD_ALWAYS,
+ SUPPORTED_CAPS);
+
+static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
+ GST_PAD_SRC,
+ GST_PAD_ALWAYS,
+ SUPPORTED_CAPS);
+
+#define DEBUG_INIT(bla) GST_DEBUG_CATEGORY_INIT (gst_scaletempo_debug, "scaletempo", 0, "scaletempo element");
+
+GST_BOILERPLATE_FULL (GstScaletempo, gst_scaletempo, GstBaseTransform,
+ GST_TYPE_BASE_TRANSFORM, DEBUG_INIT);
+
+typedef struct _GstScaletempoPrivate
+{
+ gdouble scale;
+ /* parameters */
+ guint ms_stride;
+ gdouble percent_overlap;
+ guint ms_search;
+ /* caps */
+ gboolean use_int;
+ guint samples_per_frame; /* AKA number of channels */
+ guint bytes_per_sample;
+ guint bytes_per_frame;
+ guint sample_rate;
+ /* stride */
+ gdouble frames_stride_scaled;
+ gdouble frames_stride_error;
+ guint bytes_stride;
+ gdouble bytes_stride_scaled;
+ guint bytes_queue_max;
+ guint bytes_queued;
+ guint bytes_to_slide;
+ gint8 *buf_queue;
+ /* overlap */
+ guint samples_overlap;
+ guint samples_standing;
+ guint bytes_overlap;
+ guint bytes_standing;
+ gpointer buf_overlap;
+ gpointer table_blend;
+ void (*output_overlap) (GstScaletempo * scaletempo, gpointer out_buf,
+ guint bytes_off);
+ /* best overlap */
+ guint frames_search;
+ gpointer buf_pre_corr;
+ gpointer table_window;
+ guint (*best_overlap_offset) (GstScaletempo * scaletempo);
+ /* gstreamer */
+ gint64 segment_start;
+ /* threads */
+ gboolean reinit_buffers;
+} GstScaletempoPrivate;
+#define GST_SCALETEMPO_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GST_TYPE_SCALETEMPO, GstScaletempoPrivate))
+
+
+static guint
+best_overlap_offset_float (GstScaletempo * scaletempo)
+{
+ GstScaletempoPrivate *p = GST_SCALETEMPO_GET_PRIVATE (scaletempo);
+ gfloat *pw, *po, *ppc, *search_start;
+ gfloat best_corr = G_MININT;
+ guint best_off = 0;
+ gint i, off;
+
+ pw = p->table_window;
+ po = p->buf_overlap;
+ po += p->samples_per_frame;
+ ppc = p->buf_pre_corr;
+ for (i = p->samples_per_frame; i < p->samples_overlap; i++) {
+ *ppc++ = *pw++ * *po++;
+ }
+
+ search_start = (gfloat *) p->buf_queue + p->samples_per_frame;
+ for (off = 0; off < p->frames_search; off++) {
+ gfloat corr = 0;
+ gfloat *ps = search_start;
+ ppc = p->buf_pre_corr;
+ for (i = p->samples_per_frame; i < p->samples_overlap; i++) {
+ corr += *ppc++ * *ps++;
+ }
+ if (corr > best_corr) {
+ best_corr = corr;
+ best_off = off;
+ }
+ search_start += p->samples_per_frame;
+ }
+
+ return best_off * p->bytes_per_frame;
+}
+
+/* buffer padding for loop optimization: sizeof(gint32) * (loop_size - 1) */
+#define UNROLL_PADDING (4*3)
+static guint
+best_overlap_offset_s16 (GstScaletempo * scaletempo)
+{
+ GstScaletempoPrivate *p = GST_SCALETEMPO_GET_PRIVATE (scaletempo);
+ gint32 *pw, *ppc;
+ gint16 *po, *search_start;
+ gint64 best_corr = G_MININT64;
+ guint best_off = 0;
+ guint off;
+ glong i;
+
+ pw = p->table_window;
+ po = p->buf_overlap;
+ po += p->samples_per_frame;
+ ppc = p->buf_pre_corr;
+ for (i = p->samples_per_frame; i < p->samples_overlap; i++) {
+ *ppc++ = (*pw++ * *po++) >> 15;
+ }
+
+ search_start = (gint16 *) p->buf_queue + p->samples_per_frame;
+ for (off = 0; off < p->frames_search; off++) {
+ gint64 corr = 0;
+ gint16 *ps = search_start;
+ ppc = p->buf_pre_corr;
+ ppc += p->samples_overlap - p->samples_per_frame;
+ ps += p->samples_overlap - p->samples_per_frame;
+ i = -(p->samples_overlap - p->samples_per_frame);
+ do {
+ corr += ppc[i + 0] * ps[i + 0];
+ corr += ppc[i + 1] * ps[i + 1];
+ corr += ppc[i + 2] * ps[i + 2];
+ corr += ppc[i + 3] * ps[i + 3];
+ i += 4;
+ } while (i < 0);
+ if (corr > best_corr) {
+ best_corr = corr;
+ best_off = off;
+ }
+ search_start += p->samples_per_frame;
+ }
+
+ return best_off * p->bytes_per_frame;
+}
+
+static void
+output_overlap_float (GstScaletempo * scaletempo,
+ gpointer buf_out, guint bytes_off)
+{
+ GstScaletempoPrivate *p = GST_SCALETEMPO_GET_PRIVATE (scaletempo);
+ gfloat *pout = buf_out;
+ gfloat *pb = p->table_blend;
+ gfloat *po = p->buf_overlap;
+ gfloat *pin = (gfloat *) (p->buf_queue + bytes_off);
+ gint i;
+ for (i = 0; i < p->samples_overlap; i++) {
+ *pout++ = *po - *pb++ * (*po - *pin++);
+ po++;
+ }
+}
+
+static void
+output_overlap_s16 (GstScaletempo * scaletempo,
+ gpointer buf_out, guint bytes_off)
+{
+ GstScaletempoPrivate *p = GST_SCALETEMPO_GET_PRIVATE (scaletempo);
+ gint16 *pout = buf_out;
+ gint32 *pb = p->table_blend;
+ gint16 *po = p->buf_overlap;
+ gint16 *pin = (gint16 *) (p->buf_queue + bytes_off);
+ gint i;
+ for (i = 0; i < p->samples_overlap; i++) {
+ *pout++ = *po - ((*pb++ * (*po - *pin++)) >> 16);
+ po++;
+ }
+}
+
+static guint
+fill_queue (GstScaletempo * scaletempo, GstBuffer * buf_in, guint offset)
+{
+ GstScaletempoPrivate *p = GST_SCALETEMPO_GET_PRIVATE (scaletempo);
+ guint bytes_in = GST_BUFFER_SIZE (buf_in) - offset;
+ guint offset_unchanged = offset;
+
+ if (p->bytes_to_slide > 0) {
+ if (p->bytes_to_slide < p->bytes_queued) {
+ guint bytes_in_move = p->bytes_queued - p->bytes_to_slide;
+ memmove (p->buf_queue, p->buf_queue + p->bytes_to_slide, bytes_in_move);
+ p->bytes_to_slide = 0;
+ p->bytes_queued = bytes_in_move;
+ } else {
+ guint bytes_in_skip;
+ p->bytes_to_slide -= p->bytes_queued;
+ bytes_in_skip = MIN (p->bytes_to_slide, bytes_in);
+ p->bytes_queued = 0;
+ p->bytes_to_slide -= bytes_in_skip;
+ offset += bytes_in_skip;
+ bytes_in -= bytes_in_skip;
+ }
+ }
+
+ if (bytes_in > 0) {
+ guint bytes_in_copy = MIN (p->bytes_queue_max - p->bytes_queued, bytes_in);
+ memcpy (p->buf_queue + p->bytes_queued,
+ GST_BUFFER_DATA (buf_in) + offset, bytes_in_copy);
+ p->bytes_queued += bytes_in_copy;
+ offset += bytes_in_copy;
+ }
+
+ return offset - offset_unchanged;
+}
+
+static void
+reinit_buffers (GstScaletempo * scaletempo)
+{
+ GstScaletempoPrivate *p = GST_SCALETEMPO_GET_PRIVATE (scaletempo);
+ gint i, j;
+ guint frames_overlap;
+ guint new_size;
+
+ guint frames_stride = p->ms_stride * p->sample_rate / 1000.0;
+ p->bytes_stride = frames_stride * p->bytes_per_frame;
+
+ /* overlap */
+ frames_overlap = frames_stride * p->percent_overlap;
+ if (frames_overlap < 1) { /* if no overlap */
+ p->bytes_overlap = 0;
+ p->bytes_standing = p->bytes_stride;
+ p->samples_standing = p->bytes_standing / p->bytes_per_sample;
+ p->output_overlap = NULL;
+ } else {
+ guint prev_overlap = p->bytes_overlap;
+ p->bytes_overlap = frames_overlap * p->bytes_per_frame;
+ p->samples_overlap = frames_overlap * p->samples_per_frame;
+ p->bytes_standing = p->bytes_stride - p->bytes_overlap;
+ p->samples_standing = p->bytes_standing / p->bytes_per_sample;
+ p->buf_overlap = g_realloc (p->buf_overlap, p->bytes_overlap);
+ p->table_blend = g_realloc (p->table_blend, p->samples_overlap * 4); /* sizeof (gint32|gfloat) */
+ if (p->bytes_overlap > prev_overlap) {
+ memset (p->buf_overlap + prev_overlap, 0,
+ p->bytes_overlap - prev_overlap);
+ }
+ if (p->use_int) {
+ gint32 *pb = p->table_blend;
+ gint64 blend = 0;
+ for (i = 0; i < frames_overlap; i++) {
+ gint32 v = blend / frames_overlap;
+ for (j = 0; j < p->samples_per_frame; j++) {
+ *pb++ = v;
+ }
+ blend += 65535; /* 2^16 */
+ }
+ p->output_overlap = output_overlap_s16;
+ } else {
+ gfloat *pb = p->table_blend;
+ gfloat t = (gfloat) frames_overlap;
+ for (i = 0; i < frames_overlap; i++) {
+ gfloat v = i / t;
+ for (j = 0; j < p->samples_per_frame; j++) {
+ *pb++ = v;
+ }
+ }
+ p->output_overlap = output_overlap_float;
+ }
+ }
+
+ /* best overlap */
+ p->frames_search =
+ (frames_overlap <= 1) ? 0 : p->ms_search * p->sample_rate / 1000.0;
+ if (p->frames_search < 1) { /* if no search */
+ p->best_overlap_offset = NULL;
+ } else {
+ guint bytes_pre_corr = (p->samples_overlap - p->samples_per_frame) * 4; /* sizeof (gint32|gfloat) */
+ p->buf_pre_corr =
+ g_realloc (p->buf_pre_corr, bytes_pre_corr + UNROLL_PADDING);
+ p->table_window = g_realloc (p->table_window, bytes_pre_corr);
+ if (p->use_int) {
+ gint64 t = frames_overlap;
+ gint32 n = 8589934588LL / (t * t); /* 4 * (2^31 - 1) / t^2 */
+ gint32 *pw;
+
+ memset (p->buf_pre_corr + bytes_pre_corr, 0, UNROLL_PADDING);
+ pw = p->table_window;
+ for (i = 1; i < frames_overlap; i++) {
+ gint32 v = (i * (t - i) * n) >> 15;
+ for (j = 0; j < p->samples_per_frame; j++) {
+ *pw++ = v;
+ }
+ }
+ p->best_overlap_offset = best_overlap_offset_s16;
+ } else {
+ gfloat *pw = p->table_window;
+ for (i = 1; i < frames_overlap; i++) {
+ gfloat v = i * (frames_overlap - i);
+ for (j = 0; j < p->samples_per_frame; j++) {
+ *pw++ = v;
+ }
+ }
+ p->best_overlap_offset = best_overlap_offset_float;
+ }
+ }
+
+ new_size =
+ (p->frames_search + frames_stride + frames_overlap) * p->bytes_per_frame;
+ if (p->bytes_queued > new_size) {
+ if (p->bytes_to_slide > p->bytes_queued) {
+ p->bytes_to_slide -= p->bytes_queued;
+ p->bytes_queued = 0;
+ } else {
+ guint new_queued = MIN (p->bytes_queued - p->bytes_to_slide, new_size);
+ memmove (p->buf_queue,
+ p->buf_queue + p->bytes_queued - new_queued, new_queued);
+ p->bytes_to_slide = 0;
+ p->bytes_queued = new_queued;
+ }
+ }
+ p->bytes_queue_max = new_size;
+ p->buf_queue = g_realloc (p->buf_queue, p->bytes_queue_max);
+
+ p->bytes_stride_scaled = p->bytes_stride * p->scale;
+ p->frames_stride_scaled = p->bytes_stride_scaled / p->bytes_per_frame;
+
+ GST_DEBUG
+ ("%.3f scale, %.3f stride_in, %i stride_out, %i standing, %i overlap, %i search, %i queue, %s mode",
+ p->scale, p->frames_stride_scaled,
+ (gint) (p->bytes_stride / p->bytes_per_frame),
+ (gint) (p->bytes_standing / p->bytes_per_frame),
+ (gint) (p->bytes_overlap / p->bytes_per_frame), p->frames_search,
+ (gint) (p->bytes_queue_max / p->bytes_per_frame),
+ (p->use_int ? "s16" : "float"));
+
+ p->reinit_buffers = FALSE;
+}
+
+
+/* GstBaseTransform vmethod implementations */
+static GstFlowReturn
+gst_scaletempo_transform (GstBaseTransform * trans,
+ GstBuffer * inbuf, GstBuffer * outbuf)
+{
+ GstScaletempo *scaletempo = GST_SCALETEMPO (trans);
+ GstScaletempoPrivate *p = GST_SCALETEMPO_GET_PRIVATE (scaletempo);
+
+ gint8 *pout = (gint8 *) GST_BUFFER_DATA (outbuf);
+ guint offset_in = fill_queue (scaletempo, inbuf, 0);
+ guint bytes_out = 0;
+ while (p->bytes_queued >= p->bytes_queue_max) {
+ guint bytes_off = 0;
+ gdouble frames_to_slide;
+ guint frames_to_stride_whole;
+
+ // output stride
+ if (p->output_overlap) {
+ if (p->best_overlap_offset) {
+ bytes_off = p->best_overlap_offset (scaletempo);
+ }
+ p->output_overlap (scaletempo, pout, bytes_off);
+ }
+ memcpy (pout + p->bytes_overlap,
+ p->buf_queue + bytes_off + p->bytes_overlap, p->bytes_standing);
+ pout += p->bytes_stride;
+ bytes_out += p->bytes_stride;
+
+ // input stride
+ memcpy (p->buf_overlap,
+ p->buf_queue + bytes_off + p->bytes_stride, p->bytes_overlap);
+ frames_to_slide = p->frames_stride_scaled + p->frames_stride_error;
+ frames_to_stride_whole = (gint) frames_to_slide;
+ p->bytes_to_slide = frames_to_stride_whole * p->bytes_per_frame;
+ p->frames_stride_error = frames_to_slide - frames_to_stride_whole;
+
+ offset_in += fill_queue (scaletempo, inbuf, offset_in);
+ }
+
+ GST_BUFFER_SIZE (outbuf) = bytes_out;
+ GST_BUFFER_TIMESTAMP (outbuf) =
+ (GST_BUFFER_TIMESTAMP (outbuf) - p->segment_start) / p->scale +
+ p->segment_start;
+ //GST_BUFFER_DURATION (outbuf) = bytes_out * GST_SECOND / (p->bytes_per_frame * p->sample_rate);
+ return GST_FLOW_OK;
+}
+
+static gboolean
+gst_scaletempo_transform_size (GstBaseTransform * trans,
+ GstPadDirection direction,
+ GstCaps * caps, guint size, GstCaps * othercaps, guint * othersize)
+{
+ if (direction == GST_PAD_SINK) {
+ GstScaletempo *scaletempo = GST_SCALETEMPO (trans);
+ GstScaletempoPrivate *priv = GST_SCALETEMPO_GET_PRIVATE (scaletempo);
+ gint bytes_to_out;
+
+ if (priv->reinit_buffers)
+ reinit_buffers (scaletempo);
+
+ bytes_to_out = size + priv->bytes_queued - priv->bytes_to_slide;
+ if (bytes_to_out < (gint) priv->bytes_queue_max) {
+ *othersize = 0;
+ } else {
+ /* while (total_buffered - stride_length * n >= queue_max) n++ */
+ *othersize = priv->bytes_stride * ((guint) (
+ (bytes_to_out - priv->bytes_queue_max +
+ /* rounding protection */ priv->bytes_per_frame)
+ / priv->bytes_stride_scaled) + 1);
+ }
+
+ return TRUE;
+ }
+ return FALSE;
+}
+
+static gboolean
+gst_scaletempo_sink_event (GstBaseTransform * trans, GstEvent * event)
+{
+ if (GST_EVENT_TYPE (event) == GST_EVENT_NEWSEGMENT) {
+ GstScaletempo *scaletempo = GST_SCALETEMPO (trans);
+ GstScaletempoPrivate *priv = GST_SCALETEMPO_GET_PRIVATE (scaletempo);
+
+ gboolean update;
+ gdouble rate, applied_rate;
+ GstFormat format;
+ gint64 start, stop, position;
+
+ gst_event_parse_new_segment_full (event, &update, &rate, &applied_rate,
+ &format, &start, &stop, &position);
+
+ if (priv->scale != rate) {
+ if (ABS (rate - 1.0) < 1e-10) {
+ priv->scale = 1.0;
+ gst_base_transform_set_passthrough (GST_BASE_TRANSFORM (scaletempo),
+ TRUE);
+ } else {
+ gst_base_transform_set_passthrough (GST_BASE_TRANSFORM (scaletempo),
+ FALSE);
+ priv->scale = rate;
+ priv->bytes_stride_scaled = priv->bytes_stride * priv->scale;
+ priv->frames_stride_scaled =
+ priv->bytes_stride_scaled / priv->bytes_per_frame;
+ GST_DEBUG ("%.3f scale, %.3f stride_in, %i stride_out", priv->scale,
+ priv->frames_stride_scaled,
+ (gint) (priv->bytes_stride / priv->bytes_per_frame));
+
+ priv->bytes_to_slide = 0;
+ }
+ }
+
+ if (priv->scale != 1.0) {
+ priv->segment_start = start;
+ applied_rate = priv->scale;
+ rate = 1.0;
+ //gst_event_unref (event);
+ event = gst_event_new_new_segment_full (update, rate, applied_rate,
+ format, start, stop, position);
+ gst_pad_push_event (GST_BASE_TRANSFORM_SRC_PAD (trans), event);
+ return FALSE;
+ }
+ }
+ parent_class->event (trans, event);
+ return TRUE;
+}
+
+static gboolean
+gst_scaletempo_set_caps (GstBaseTransform * trans,
+ GstCaps * incaps, GstCaps * outcaps)
+{
+ GstScaletempo *scaletempo = GST_SCALETEMPO (trans);
+ GstScaletempoPrivate *priv = GST_SCALETEMPO_GET_PRIVATE (scaletempo);
+ GstStructure *s = gst_caps_get_structure (incaps, 0);
+
+ gint width, bps, nch, rate;
+ gboolean use_int;
+ const gchar *type = gst_structure_get_name (s);
+ if (g_str_equal (type, "audio/x-raw-int")) {
+ use_int = TRUE;
+ gst_structure_get_int (s, "depth", &width);
+ } else if (g_str_equal (type, "audio/x-raw-float")) {
+ use_int = FALSE;
+ gst_structure_get_int (s, "width", &width);
+ } else {
+ return FALSE;
+ }
+ bps = width / 8;
+
+ gst_structure_get_int (s, "channels", &nch);
+ gst_structure_get_int (s, "rate", &rate);
+
+ GST_DEBUG ("caps: %s seek, "
+ "%5" G_GUINT32_FORMAT " rate, "
+ "%2" G_GUINT32_FORMAT " nch, "
+ "%2" G_GUINT32_FORMAT " bps", type, rate, nch, bps);
+
+ if (rate != priv->sample_rate
+ || nch != priv->samples_per_frame
+ || bps != priv->bytes_per_sample || use_int != priv->use_int) {
+ priv->sample_rate = rate;
+ priv->samples_per_frame = nch;
+ priv->bytes_per_sample = bps;
+ priv->bytes_per_frame = nch * bps;
+ priv->use_int = use_int;
+ priv->reinit_buffers = TRUE;
+ }
+
+ return TRUE;
+}
+
+
+/* GObject vmethod implementations */
+static void
+gst_scaletempo_get_property (GObject * object,
+ guint prop_id, GValue * value, GParamSpec * pspec)
+{
+ GstScaletempo *scaletempo = GST_SCALETEMPO (object);
+ GstScaletempoPrivate *priv = GST_SCALETEMPO_GET_PRIVATE (scaletempo);
+
+ switch (prop_id) {
+ case PROP_RATE:
+ g_value_set_double (value, priv->scale);
+ break;
+ case PROP_STRIDE:
+ g_value_set_uint (value, priv->ms_stride);
+ break;
+ case PROP_OVERLAP:
+ g_value_set_double (value, priv->percent_overlap);
+ break;
+ case PROP_SEARCH:
+ g_value_set_uint (value, priv->ms_search);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gst_scaletempo_set_property (GObject * object,
+ guint prop_id, const GValue * value, GParamSpec * pspec)
+{
+ GstScaletempo *scaletempo = GST_SCALETEMPO (object);
+ GstScaletempoPrivate *priv = GST_SCALETEMPO_GET_PRIVATE (scaletempo);
+
+ switch (prop_id) {
+ case PROP_STRIDE:{
+ guint new_value = g_value_get_uint (value);
+ if (priv->ms_stride != new_value) {
+ priv->ms_stride = new_value;
+ priv->reinit_buffers = TRUE;
+ }
+ break;
+ }
+ case PROP_OVERLAP:{
+ gdouble new_value = g_value_get_double (value);
+ if (priv->percent_overlap != new_value) {
+ priv->percent_overlap = new_value;
+ priv->reinit_buffers = TRUE;
+ }
+ break;
+ }
+ case PROP_SEARCH:{
+ guint new_value = g_value_get_uint (value);
+ if (priv->ms_search != new_value) {
+ priv->ms_search = new_value;
+ priv->reinit_buffers = TRUE;
+ }
+ break;
+ }
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gst_scaletempo_base_init (gpointer klass)
+{
+ static GstElementDetails element_details = {
+ "Scaletempo",
+ "Filter/Effect/Rate",
+ "Sync audio tempo with playback rate",
+ "Rov Juvano <rovjuvano@users.sourceforge.net>"
+ };
+ GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
+
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&src_template));
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&sink_template));
+ gst_element_class_set_details (element_class, &element_details);
+}
+
+static void
+gst_scaletempo_class_init (GstScaletempoClass * klass)
+{
+ GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+ GstBaseTransformClass *basetransform_class = GST_BASE_TRANSFORM_CLASS (klass);
+
+ g_type_class_add_private (klass, sizeof (GstScaletempoPrivate));
+
+ gobject_class->get_property = GST_DEBUG_FUNCPTR (gst_scaletempo_get_property);
+ gobject_class->set_property = GST_DEBUG_FUNCPTR (gst_scaletempo_set_property);
+
+ g_object_class_install_property (gobject_class, PROP_RATE,
+ g_param_spec_double ("rate", "Playback Rate", "Current playback rate",
+ G_MININT, G_MAXINT, 1.0, G_PARAM_READABLE));
+
+ g_object_class_install_property (gobject_class, PROP_STRIDE,
+ g_param_spec_uint ("stride", "Stride Length",
+ "Length in milliseconds to output each stride", 1, 5000, 30,
+ G_PARAM_READWRITE));
+
+ g_object_class_install_property (gobject_class, PROP_OVERLAP,
+ g_param_spec_double ("overlap", "Overlap Length",
+ "Percentage of stride to overlap", 0, 1, .2, G_PARAM_READWRITE));
+
+ g_object_class_install_property (gobject_class, PROP_SEARCH,
+ g_param_spec_uint ("search", "Search Length",
+ "Length in milliseconds to search for best overlap position", 0, 500,
+ 14, G_PARAM_READWRITE));
+
+ basetransform_class->event = GST_DEBUG_FUNCPTR (gst_scaletempo_sink_event);
+ basetransform_class->set_caps = GST_DEBUG_FUNCPTR (gst_scaletempo_set_caps);
+ basetransform_class->transform_size =
+ GST_DEBUG_FUNCPTR (gst_scaletempo_transform_size);
+ basetransform_class->transform = GST_DEBUG_FUNCPTR (gst_scaletempo_transform);
+}
+
+static void
+gst_scaletempo_init (GstScaletempo * scaletempo, GstScaletempoClass * klass)
+{
+ GstScaletempoPrivate *priv = GST_SCALETEMPO_GET_PRIVATE (scaletempo);
+ /* defaults */
+ priv->ms_stride = 30;
+ priv->percent_overlap = .2;
+ priv->ms_search = 14;
+
+ /* uninitialized */
+ priv->scale = 0;
+ priv->sample_rate = 0;
+ priv->frames_stride_error = 0;
+ priv->bytes_stride = 0;
+ priv->bytes_queued = 0;
+ priv->bytes_to_slide = 0;
+ priv->segment_start = 0;
+}
--- /dev/null
+/*
+ * GStreamer
+ * Copyright (C) 2008 Rov Juvano <rovjuvano@users.sourceforge.net>
+ *
+ * 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.
+ */
+
+#ifndef __GST_SCALETEMPO_H__
+#define __GST_SCALETEMPO_H__
+
+#include <gst/gst.h>
+#include <gst/base/gstbasetransform.h>
+
+G_BEGIN_DECLS
+#define GST_TYPE_SCALETEMPO (gst_scaletempo_get_type())
+#define GST_SCALETEMPO(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_SCALETEMPO, GstScaletempo))
+#define GST_SCALETEMPO_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_SCALETEMPO, GstScaletempoClass))
+#define GST_IS_SCALETEMPO(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_SCALETEMPO))
+#define GST_IS_SCALETEMPO_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_SCALETEMPO))
+typedef struct _GstScaletempo GstScaletempo;
+typedef struct _GstScaletempoClass GstScaletempoClass;
+
+struct _GstScaletempo
+{
+ GstBaseTransform element;
+};
+
+struct _GstScaletempoClass
+{
+ GstBaseTransformClass parent_class;
+};
+
+GType gst_scaletempo_get_type (void);
+
+G_END_DECLS
+#endif /* __GST_SCALETEMPO_H__ */
--- /dev/null
+/*
+ * GStreamer
+ * Copyright (C) 2008 Rov Juvano <rovjuvano@users.sourceforge.net>
+ *
+ * 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.
+ *
+ * Alternatively, the contents of this file may be used under the
+ * GNU Lesser General Public License Version 2.1 (the "LGPL"), in
+ * which case the following provisions apply instead of the ones
+ * mentioned above:
+ *
+ * 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 <gst/gst.h>
+#include "gstscaletempo.h"
+
+/* entry point to initialize the plug-in
+ * initialize the plug-in itself
+ * register the element factories and pad templates
+ * register the features
+ *
+ * exchange the string 'plugin' with your elemnt name
+ */
+
+static gboolean
+plugin_init (GstPlugin * plugin)
+{
+ return gst_element_register (plugin, "scaletempo", GST_RANK_NONE,
+ GST_TYPE_SCALETEMPO);
+}
+
+/* this is the structure that gstreamer looks for to register plugins
+ *
+ * exchange the strings 'plugin' and 'Template plugin' with you plugin name and
+ * description
+ */
+GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, GST_VERSION_MINOR,
+ "scaletempo", "Scale audio tempo in sync with playback rate",
+ plugin_init, VERSION, "LGPL", "GStreamer",
+ "http://gstreamer.freedesktop.org/")
projects / platform / upstream / gst-plugins-bad.git / commitdiff