Add scaletempo plugin, which allows to scale the speed of audio without changing the pitch by handling seeks with a r...

Original commit message from CVS:
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.

1 files changed, 71 insertions, 0 deletions

diff --git a/examples/scaletempo/demo-player.h b/examples/scaletempo/demo-player.h
new file mode 100644
index 00000000..ff521fc7
--- /dev/null
+++ b/examples/scaletempo/demo-player.h
@@ -0,0 +1,71 @@
+/* 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_ */