/*
* Clutter.
*
* An OpenGL based 'interactive canvas' library.
*
* Authored By: Matthew Allum <mallum@openedhand.com>
* Emmanuele Bassi <ebassi@linux.intel.com>
*
* Copyright (C) 2006 OpenedHand
* Copyright (C) 2009 Intel Corp.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* SECTION:clutter-media
* @short_description: An interface for controlling playback of media data
*
* #ClutterMedia is an interface for controlling playback of media sources.
*
* Clutter core does not provide an implementation of this interface, but
* other integration libraries like Clutter-GStreamer implement it to offer
* a uniform API for applications.
*
* #ClutterMedia is available since Clutter 0.2
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "clutter-media.h"
#include "clutter-main.h"
#include "clutter-enum-types.h"
#include "clutter-private.h" /* for DBG */
enum
{
EOS_SIGNAL,
ERROR_SIGNAL, /* can't be called 'ERROR' otherwise it clashes with wingdi.h */
LAST_SIGNAL
};
static guint media_signals[LAST_SIGNAL] = { 0, };
static void
clutter_media_base_init (gpointer g_iface)
{
static gboolean was_initialized = FALSE;
if (G_UNLIKELY (!was_initialized))
{
GParamSpec *pspec = NULL;
was_initialized = TRUE;
/**
* ClutterMedia:uri:
*
* The location of a media file, expressed as a valid URI.
*
* Since: 0.2
*/
pspec = g_param_spec_string ("uri",
"URI",
"URI of a media file",
NULL,
CLUTTER_PARAM_READWRITE);
g_object_interface_install_property (g_iface, pspec);
/**
* ClutterMedia:playing:
*
* Whether the #ClutterMedia actor is playing.
*
* Since: 0.2
*/
pspec = g_param_spec_boolean ("playing",
"Playing",
"Wheter the actor is playing",
FALSE,
CLUTTER_PARAM_READWRITE);
g_object_interface_install_property (g_iface, pspec);
/**
* ClutterMedia:progress:
*
* The current progress of the playback, as a normalized
* value between 0.0 and 1.0.
*
* Since: 1.0
*/
pspec = g_param_spec_double ("progress",
"Progress",
"Current progress of the playback",
0.0, 1.0, 0.0,
CLUTTER_PARAM_READWRITE);
g_object_interface_install_property (g_iface, pspec);
/**
* ClutterMedia:audio-volume:
*
* The volume of the audio, as a normalized value between
* 0.0 and 1.0.
*
* Since: 1.0
*/
pspec = g_param_spec_double ("audio-volume",
"Audio Volume",
"The volume of the audio",
0.0, 1.0, 0.5,
CLUTTER_PARAM_READWRITE);
g_object_interface_install_property (g_iface, pspec);
/**
* ClutterMedia:can-seek:
*
* Whether the current stream is seekable.
*
* Since: 0.2
*/
pspec = g_param_spec_boolean ("can-seek",
"Can Seek",
"Whether the current stream is seekable",
FALSE,
CLUTTER_PARAM_READABLE);
g_object_interface_install_property (g_iface, pspec);
/**
* ClutterMedia:buffer-fill:
*
* The fill level of the buffer for the current stream,
* as a value between 0.0 and 1.0.
*
* Since: 1.0
*/
pspec = g_param_spec_double ("buffer-fill",
"Buffer Fill",
"The fill level of the buffer",
0.0, 1.0, 0.0,
CLUTTER_PARAM_READABLE);
g_object_interface_install_property (g_iface, pspec);
/**
* ClutterMedia:duration:
*
* The duration of the current stream, in seconds
*
* Since: 0.2
*/
pspec = g_param_spec_double ("duration",
"Duration",
"The duration of the stream, in seconds",
0, G_MAXDOUBLE, 0,
CLUTTER_PARAM_READABLE);
g_object_interface_install_property (g_iface, pspec);
/**
* ClutterMedia::eos:
* @media: the #ClutterMedia instance that received the signal
*
* The ::eos signal is emitted each time the media stream ends.
*
* Since: 0.2
*/
media_signals[EOS_SIGNAL] =
g_signal_new ("eos",
CLUTTER_TYPE_MEDIA,
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (ClutterMediaIface, eos),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
/**
* ClutterMedia::error:
* @media: the #ClutterMedia instance that received the signal
* @error: the #GError
*
* The ::error signal is emitted each time an error occurred.
*
* Since: 0.2
*/
media_signals[ERROR_SIGNAL] =
g_signal_new ("error",
CLUTTER_TYPE_MEDIA,
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (ClutterMediaIface, error),
NULL, NULL,
g_cclosure_marshal_VOID__POINTER,
G_TYPE_NONE, 1,
G_TYPE_POINTER);
}
}
GType
clutter_media_get_type (void)
{
static GType media_type = 0;
if (G_UNLIKELY (media_type == 0))
{
const GTypeInfo media_info = {
sizeof (ClutterMediaIface), /* class size */
clutter_media_base_init, /* base_init */
NULL, /* base_finalize */
};
media_type = g_type_register_static (G_TYPE_INTERFACE,
I_("ClutterMedia"),
&media_info, 0);
}
return media_type;
}
/**
* clutter_media_set_uri:
* @media: a #ClutterMedia
* @uri: the URI of the media stream
*
* Sets the URI of @media to @uri.
*
* Since: 0.2
*/
void
clutter_media_set_uri (ClutterMedia *media,
const gchar *uri)
{
g_return_if_fail (CLUTTER_IS_MEDIA(media));
g_object_set (G_OBJECT (media), "uri", uri, NULL);
}
/**
* clutter_media_get_uri:
* @media: a #ClutterMedia
*
* Retrieves the URI from @media.
*
* Return value: the URI of the media stream. Use g_free()
* to free the returned string
*
* Since: 0.2
*/
gchar *
clutter_media_get_uri (ClutterMedia *media)
{
gchar *retval = NULL;
g_return_val_if_fail (CLUTTER_IS_MEDIA(media), NULL);
g_object_get (G_OBJECT (media), "uri", &retval, NULL);
return retval;
}
/**
* clutter_media_set_playing:
* @media: a #ClutterMedia
* @playing: %TRUE to start playing
*
* Starts or stops playing of @media.
*
* Since: 0.2
*/
void
clutter_media_set_playing (ClutterMedia *media,
gboolean playing)
{
g_return_if_fail (CLUTTER_IS_MEDIA(media));
g_object_set (G_OBJECT (media), "playing", playing, NULL);
}
/**
* clutter_media_get_playing:
* @media: A #ClutterMedia object
*
* Retrieves the playing status of @media.
*
* Return value: %TRUE if playing, %FALSE if stopped.
*
* Since: 0.2
*/
gboolean
clutter_media_get_playing (ClutterMedia *media)
{
gboolean is_playing = FALSE;
g_return_val_if_fail (CLUTTER_IS_MEDIA (media), FALSE);
g_object_get (G_OBJECT (media), "playing", &is_playing, NULL);
return is_playing;
}
/**
* clutter_media_set_progress:
* @media: a #ClutterMedia
* @progress: the progress of the playback, between 0.0 and 1.0
*
* Sets the playback progress of @media. The @progress is
* a normalized value between 0.0 (begin) and 1.0 (end).
*
* Since: 1.0
*/
void
clutter_media_set_progress (ClutterMedia *media,
gdouble progress)
{
g_return_if_fail (CLUTTER_IS_MEDIA (media));
g_object_set (G_OBJECT (media), "progress", progress, NULL);
}
/**
* clutter_media_get_progress:
* @media: a #ClutterMedia
*
* Retrieves the playback progress of @media.
*
* Return value: the playback progress, between 0.0 and 1.0
*
* Since: 1.0
*/
gdouble
clutter_media_get_progress (ClutterMedia *media)
{
gdouble retval = 0.0;
g_return_val_if_fail (CLUTTER_IS_MEDIA (media), 0);
g_object_get (G_OBJECT (media), "progress", &retval, NULL);
return retval;
}
/**
* clutter_media_set_audio_volume:
* @media: a #ClutterMedia
* @volume: the volume as a double between 0.0 and 1.0
*
* Sets the playback volume of @media to @volume.
*
* Since: 1.0
*/
void
clutter_media_set_audio_volume (ClutterMedia *media,
gdouble volume)
{
g_return_if_fail (CLUTTER_IS_MEDIA(media));
g_object_set (G_OBJECT (media), "audio-volume", volume, NULL);
}
/**
* clutter_media_get_audio_volume:
* @media: a #ClutterMedia
*
* Retrieves the playback volume of @media.
*
* Return value: The playback volume between 0.0 and 1.0
*
* Since: 1.0
*/
gdouble
clutter_media_get_audio_volume (ClutterMedia *media)
{
gdouble retval = 0.0;
g_return_val_if_fail (CLUTTER_IS_MEDIA (media), 0.0);
g_object_get (G_OBJECT (media), "audio-volume", &retval, NULL);
return retval;
}
/**
* clutter_media_get_can_seek:
* @media: a #ClutterMedia
*
* Retrieves whether @media is seekable or not.
*
* Return value: %TRUE if @media can seek, %FALSE otherwise.
*
* Since: 0.2
*/
gboolean
clutter_media_get_can_seek (ClutterMedia *media)
{
gboolean retval = FALSE;
g_return_val_if_fail (CLUTTER_IS_MEDIA (media), FALSE);
g_object_get (G_OBJECT (media), "can-seek", &retval, NULL);
return retval;
}
/**
* clutter_media_get_buffer_fill:
* @media: a #ClutterMedia
*
* Retrieves the amount of the stream that is buffered.
*
* Return value: the fill level, between 0.0 and 1.0
*
* Since: 1.0
*/
gdouble
clutter_media_get_buffer_fill (ClutterMedia *media)
{
gdouble retval = 0.0;
g_return_val_if_fail (CLUTTER_IS_MEDIA (media), 0);
g_object_get (G_OBJECT (media), "buffer-fill", &retval, NULL);
return retval;
}
/**
* clutter_media_get_duration:
* @media: a #ClutterMedia
*
* Retrieves the duration of the media stream that @media represents.
*
* Return value: the duration of the media stream, in seconds
*
* Since: 0.2
*/
gdouble
clutter_media_get_duration (ClutterMedia *media)
{
gdouble retval = 0;
g_return_val_if_fail (CLUTTER_IS_MEDIA(media), 0);
g_object_get (G_OBJECT (media), "duration", &retval, NULL);
return retval;
}
/* helper funcs */
/**
* clutter_media_set_filename:
* @media: a #ClutterMedia
* @filename: A filename
*
* Sets the source of @media using a file path.
*
* Since: 0.2
*/
void
clutter_media_set_filename (ClutterMedia *media,
const gchar *filename)
{
gchar *uri;
GError *uri_error = NULL;
if (!g_path_is_absolute (filename))
{
gchar *abs_path;
abs_path = g_build_filename (g_get_current_dir (), filename, NULL);
uri = g_filename_to_uri (abs_path, NULL, &uri_error);
g_free (abs_path);
}
else
uri = g_filename_to_uri (filename, NULL, &uri_error);
if (uri_error)
{
g_signal_emit (media, media_signals[ERROR_SIGNAL], 0, uri_error);
g_error_free (uri_error);
return;
}
clutter_media_set_uri (media, uri);
g_free (uri);
}