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2006-08-30 Jorn Baayen <jorn@openedhand.com>

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* clutter/Makefile.am:
	* clutter/clutter-audio.c:
	* clutter/clutter-audio.h:
	* clutter/clutter.h:

	Added ClutterAudio audio playback object.
This commit is contained in:
Jorn Baayen 2006-08-30 09:06:35 +00:00
parent 3afb377c3e
commit f907bcee1e
5 changed files with 917 additions and 0 deletions
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9
ChangeLog
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@ -1,3 +1,12 @@
2006-08-30 Jorn Baayen <jorn@openedhand.com>
* clutter/Makefile.am:
* clutter/clutter-audio.c:
* clutter/clutter-audio.h:
* clutter/clutter.h:
Added ClutterAudio audio playback object.
2006-08-29 Matthew Allum <mallum@openedhand.com>
* clutter/clutter-fixed.h:

2
clutter/Makefile.am
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@ -25,6 +25,7 @@ source_h = \
$(srcdir)/clutter-behaviour.h \
$(srcdir)/clutter-behaviours.h \
$(srcdir)/clutter-alpha.h \
$(srcdir)/clutter-audio.h \
$(srcdir)/clutter-main.h
clutter-marshal.h: clutter-marshal.list
@ -90,6 +91,7 @@ source_c = clutter-main.c \
clutter-behaviour.c \
clutter-behaviours.c \
clutter-alpha.c \
clutter-audio.c \
clutter-enum-types.c
source_h_priv = clutter-private.h

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clutter/clutter-audio.c Normal file
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@ -0,0 +1,818 @@
/*
* Clutter.
*
* An OpenGL based 'interactive canvas' library.
*
* Authored By Matthew Allum <mallum@openedhand.com>
* Jorn Baayen <jorn@openedhand.com>
*
* Copyright (C) 2006 OpenedHand
*
* 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, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/**
* SECTION:clutter-audio
* @short_description: Object for playback of audio files.
*
* #ClutterAudio is an object that plays audio files.
*/
#include "clutter-audio.h"
#include "clutter-main.h"
#include "clutter-private.h" /* for DBG */
#include "clutter-marshal.h"
#include <gst/gst.h>
#include <gst/audio/gstbaseaudiosink.h>
#include <glib.h>
struct _ClutterAudioPrivate
{
GstElement *playbin;
char *uri;
gboolean can_seek;
int buffer_percent;
int duration;
guint tick_timeout_id;
};
enum {
PROP_0,
/* ClutterMedia proprs */
PROP_URI,
PROP_PLAYING,
PROP_POSITION,
PROP_VOLUME,
PROP_CAN_SEEK,
PROP_BUFFER_PERCENT,
PROP_DURATION
};
#define TICK_TIMEOUT 0.5
static void clutter_media_init (ClutterMediaInterface *iface);
static gboolean tick_timeout (ClutterAudio *audio);
G_DEFINE_TYPE_EXTENDED (ClutterAudio, \
clutter_audio, \
G_TYPE_OBJECT, \
0, \
G_IMPLEMENT_INTERFACE (CLUTTER_TYPE_MEDIA, \
clutter_media_init));
/* Interface implementation */
static void
set_uri (ClutterMedia *media,
const char *uri)
{
ClutterAudio *audio = CLUTTER_AUDIO(media);
ClutterAudioPrivate *priv;
GstState state, pending;
g_return_if_fail (CLUTTER_IS_AUDIO (audio));
priv = audio->priv;
if (!priv->playbin)
return;
g_free (priv->uri);
if (uri)
{
priv->uri = g_strdup (uri);
/**
* Ensure the tick timeout is installed.
*
* We also have it installed in PAUSED state, because
* seeks etc may have a delayed effect on the position.
**/
if (priv->tick_timeout_id == 0)
{
priv->tick_timeout_id = g_timeout_add (TICK_TIMEOUT * 1000,
(GSourceFunc) tick_timeout,
audio);
}
}
else
{
priv->uri = NULL;
if (priv->tick_timeout_id > 0)
{
g_source_remove (priv->tick_timeout_id);
priv->tick_timeout_id = 0;
}
}
priv->can_seek = FALSE;
priv->duration = 0;
gst_element_get_state (priv->playbin, &state, &pending, 0);
if (pending)
state = pending;
gst_element_set_state (priv->playbin, GST_STATE_NULL);
g_object_set (priv->playbin,
"uri", uri,
NULL);
/**
* Restore state.
**/
if (uri)
gst_element_set_state (priv->playbin, state);
/*
* Emit notififications for all these to make sure UI is not showing
* any properties of the old URI.
*/
g_object_notify (G_OBJECT (audio), "uri");
g_object_notify (G_OBJECT (audio), "can-seek");
g_object_notify (G_OBJECT (audio), "duration");
g_object_notify (G_OBJECT (audio), "position");
}
static const char *
get_uri (ClutterMedia *media)
{
ClutterAudio *audio = CLUTTER_AUDIO(media);
ClutterAudioPrivate *priv;
g_return_val_if_fail (CLUTTER_IS_AUDIO (audio), NULL);
priv = audio->priv;
return priv->uri;
}
static void
set_playing (ClutterMedia *media,
gboolean playing)
{
ClutterAudio *audio = CLUTTER_AUDIO(media);
ClutterAudioPrivate *priv;
g_return_if_fail (CLUTTER_IS_AUDIO (audio));
priv = audio->priv;
if (!priv->playbin)
return;
if (priv->uri)
{
GstState state;
if (playing)
state = GST_STATE_PLAYING;
else
state = GST_STATE_PAUSED;
gst_element_set_state (audio->priv->playbin, state);
}
else
{
if (playing)
g_warning ("Tried to play, but no URI is loaded.");
}
g_object_notify (G_OBJECT (audio), "playing");
g_object_notify (G_OBJECT (audio), "position");
}
static gboolean
get_playing (ClutterMedia *media)
{
ClutterAudio *audio = CLUTTER_AUDIO(media);
ClutterAudioPrivate *priv;
GstState state, pending;
g_return_val_if_fail (CLUTTER_IS_AUDIO (audio), FALSE);
priv = audio->priv;
if (!priv->playbin)
return FALSE;
gst_element_get_state (priv->playbin, &state, &pending, 0);
if (pending)
return (pending == GST_STATE_PLAYING);
else
return (state == GST_STATE_PLAYING);
}
static void
set_position (ClutterMedia *media,
int position) /* seconds */
{
ClutterAudio *audio = CLUTTER_AUDIO(media);
ClutterAudioPrivate *priv;
GstState state, pending;
g_return_if_fail (CLUTTER_IS_AUDIO (audio));
priv = audio->priv;
if (!priv->playbin)
return;
gst_element_get_state (priv->playbin, &state, &pending, 0);
if (pending)
state = pending;
gst_element_set_state (priv->playbin, GST_STATE_PAUSED);
gst_element_seek (priv->playbin,
1.0,
GST_FORMAT_TIME,
GST_SEEK_FLAG_FLUSH,
GST_SEEK_TYPE_SET,
position * GST_SECOND,
0, 0);
gst_element_set_state (priv->playbin, state);
}
static int
get_position (ClutterMedia *media)
{
ClutterAudio *audio = CLUTTER_AUDIO(media);
ClutterAudioPrivate *priv;
GstQuery *query;
gint64 position;
g_return_val_if_fail (CLUTTER_IS_AUDIO (audio), -1);
priv = audio->priv;
if (!priv->playbin)
return -1;
query = gst_query_new_position (GST_FORMAT_TIME);
if (gst_element_query (priv->playbin, query))
gst_query_parse_position (query, NULL, &position);
else
position = 0;
gst_query_unref (query);
return (position / GST_SECOND);
}
static void
set_volume (ClutterMedia *media,
double volume)
{
ClutterAudio *audio = CLUTTER_AUDIO(media);
ClutterAudioPrivate *priv;
g_return_if_fail (CLUTTER_IS_AUDIO (audio));
// g_return_if_fail (volume >= 0.0 && volume <= GST_VOL_MAX);
priv = audio->priv;
if (!priv->playbin)
return;
g_object_set (G_OBJECT (audio->priv->playbin),
"volume", volume,
NULL);
g_object_notify (G_OBJECT (audio), "volume");
}
static double
get_volume (ClutterMedia *media)
{
ClutterAudio *audio = CLUTTER_AUDIO(media);
ClutterAudioPrivate *priv;
double volume;
g_return_val_if_fail (CLUTTER_IS_AUDIO (audio), 0.0);
priv = audio->priv;
if (!priv->playbin)
return 0.0;
g_object_get (priv->playbin,
"volume", &volume,
NULL);
return volume;
}
static gboolean
can_seek (ClutterMedia *media)
{
ClutterAudio *audio = CLUTTER_AUDIO(media);
g_return_val_if_fail (CLUTTER_IS_AUDIO (audio), FALSE);
return audio->priv->can_seek;
}
static int
get_buffer_percent (ClutterMedia *media)
{
ClutterAudio *audio = CLUTTER_AUDIO(media);
g_return_val_if_fail (CLUTTER_IS_AUDIO (audio), -1);
return audio->priv->buffer_percent;
}
static int
get_duration (ClutterMedia *media)
{
ClutterAudio *audio = CLUTTER_AUDIO(media);
g_return_val_if_fail (CLUTTER_IS_AUDIO (audio), -1);
return audio->priv->duration;
}
static void
clutter_media_init (ClutterMediaInterface *iface)
{
iface->set_uri = set_uri;
iface->get_uri = get_uri;
iface->set_playing = set_playing;
iface->get_playing = get_playing;
iface->set_position = set_position;
iface->get_position = get_position;
iface->set_volume = set_volume;
iface->get_volume = get_volume;
iface->can_seek = can_seek;
iface->get_buffer_percent = get_buffer_percent;
iface->get_duration = get_duration;
}
static void
clutter_audio_dispose (GObject *object)
{
ClutterAudio *self;
ClutterAudioPrivate *priv;
self = CLUTTER_AUDIO(object);
priv = self->priv;
/* FIXME: flush an errors off bus ? */
/* gst_bus_set_flushing (priv->bus, TRUE); */
if (priv->playbin)
{
gst_element_set_state (priv->playbin, GST_STATE_NULL);
gst_object_unref (GST_OBJECT (priv->playbin));
priv->playbin = NULL;
}
if (priv->tick_timeout_id > 0)
{
g_source_remove (priv->tick_timeout_id);
priv->tick_timeout_id = 0;
}
G_OBJECT_CLASS (clutter_audio_parent_class)->dispose (object);
}
static void
clutter_audio_finalize (GObject *object)
{
ClutterAudio *self;
ClutterAudioPrivate *priv;
self = CLUTTER_AUDIO(object);
priv = self->priv;
if (priv->uri)
g_free(priv->uri);
G_OBJECT_CLASS (clutter_audio_parent_class)->finalize (object);
}
static void
clutter_audio_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
ClutterAudio *audio;
audio = CLUTTER_AUDIO(object);
switch (property_id)
{
case PROP_URI:
clutter_media_set_uri (CLUTTER_MEDIA(audio),
g_value_get_string (value));
break;
case PROP_PLAYING:
clutter_media_set_playing (CLUTTER_MEDIA(audio),
g_value_get_boolean (value));
break;
case PROP_POSITION:
clutter_media_set_position (CLUTTER_MEDIA(audio),
g_value_get_int (value));
break;
case PROP_VOLUME:
clutter_media_set_volume (CLUTTER_MEDIA(audio),
g_value_get_double (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
}
static void
clutter_audio_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
ClutterAudio *audio;
ClutterMedia *media;
audio = CLUTTER_AUDIO (object);
media = CLUTTER_MEDIA (audio);
switch (property_id)
{
case PROP_URI:
g_value_set_string (value, clutter_media_get_uri (media));
break;
case PROP_PLAYING:
g_value_set_boolean (value, clutter_media_get_playing (media));
break;
case PROP_POSITION:
g_value_set_int (value, clutter_media_get_position (media));
break;
case PROP_VOLUME:
g_value_set_double (value, clutter_media_get_volume (media));
break;
case PROP_CAN_SEEK:
g_value_set_boolean (value, clutter_media_get_can_seek (media));
break;
case PROP_BUFFER_PERCENT:
g_value_set_int (value, clutter_media_get_buffer_percent (media));
break;
case PROP_DURATION:
g_value_set_int (value, clutter_media_get_duration (media));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
}
static void
clutter_audio_class_init (ClutterAudioClass *klass)
{
GObjectClass *object_class;
object_class = (GObjectClass*)klass;
object_class->dispose = clutter_audio_dispose;
object_class->finalize = clutter_audio_finalize;
object_class->set_property = clutter_audio_set_property;
object_class->get_property = clutter_audio_get_property;
/* Interface props */
g_object_class_override_property (object_class, PROP_URI, "uri");
g_object_class_override_property (object_class, PROP_PLAYING, "playing");
g_object_class_override_property (object_class, PROP_POSITION, "position");
g_object_class_override_property (object_class, PROP_VOLUME, "volume");
g_object_class_override_property (object_class, PROP_CAN_SEEK, "can-seek");
g_object_class_override_property (object_class, PROP_DURATION, "duration");
g_object_class_override_property (object_class, PROP_BUFFER_PERCENT,
"buffer-percent" );
}
static void
bus_message_error_cb (GstBus *bus,
GstMessage *message,
ClutterAudio *audio)
{
GError *error;
error = NULL;
gst_message_parse_error (message, &error, NULL);
g_signal_emit_by_name (CLUTTER_MEDIA(audio), "error", error);
g_error_free (error);
}
static void
bus_message_eos_cb (GstBus *bus,
GstMessage *message,
ClutterAudio *audio)
{
g_object_notify (G_OBJECT (audio), "position");
g_signal_emit_by_name (CLUTTER_MEDIA(audio), "eos");
}
static void
bus_message_tag_cb (GstBus *bus,
GstMessage *message,
ClutterAudio *audio)
{
GstTagList *tag_list;
gst_message_parse_tag (message, &tag_list);
g_signal_emit_by_name (CLUTTER_MEDIA(audio),
"metadata-available",
tag_list);
gst_tag_list_free (tag_list);
}
static void
bus_message_buffering_cb (GstBus *bus,
GstMessage *message,
ClutterAudio *audio)
{
const GstStructure *str;
str = gst_message_get_structure (message);
if (!str)
return;
if (!gst_structure_get_int (str,
"buffer-percent",
&audio->priv->buffer_percent))
return;
g_object_notify (G_OBJECT (audio), "buffer-percent");
}
static void
bus_message_duration_cb (GstBus *bus,
GstMessage *message,
ClutterAudio *audio)
{
GstFormat format;
gint64 duration;
gst_message_parse_duration (message,
&format,
&duration);
if (format != GST_FORMAT_TIME)
return;
audio->priv->duration = duration / GST_SECOND;
g_object_notify (G_OBJECT (audio), "duration");
}
static void
bus_message_state_change_cb (GstBus *bus,
GstMessage *message,
ClutterAudio *audio)
{
gpointer src;
GstState old_state, new_state;
src = GST_MESSAGE_SRC (message);
if (src != audio->priv->playbin)
return;
gst_message_parse_state_changed (message, &old_state, &new_state, NULL);
if (old_state == GST_STATE_READY &&
new_state == GST_STATE_PAUSED)
{
GstQuery *query;
/**
* Determine whether we can seek.
**/
query = gst_query_new_seeking (GST_FORMAT_TIME);
if (gst_element_query (audio->priv->playbin, query)) {
gst_query_parse_seeking (query,
NULL,
&audio->priv->can_seek,
NULL,
NULL);
} else {
/*
* Could not query for ability to seek. Determine
* using URI.
*/
if (g_str_has_prefix (audio->priv->uri,
"http://")) {
audio->priv->can_seek = FALSE;
} else {
audio->priv->can_seek = TRUE;
}
}
gst_query_unref (query);
g_object_notify (G_OBJECT (audio), "can-seek");
/**
* Determine the duration.
**/
query = gst_query_new_duration (GST_FORMAT_TIME);
if (gst_element_query (audio->priv->playbin, query))
{
gint64 duration;
gst_query_parse_duration (query, NULL, &duration);
audio->priv->duration = duration / GST_SECOND;
g_object_notify (G_OBJECT (audio), "duration");
}
gst_query_unref (query);
}
}
static gboolean
tick_timeout (ClutterAudio *audio)
{
g_object_notify (G_OBJECT (audio), "position");
return TRUE;
}
static void
fakesink_handoff_cb (GstElement *fakesrc,
GstBuffer *buffer,
GstPad *pad,
gpointer user_data)
{
GstStructure *structure;
int width, height;
GdkPixbuf *pixb;
structure = gst_caps_get_structure(GST_CAPS(buffer->caps), 0);
gst_structure_get_int(structure, "width", &width);
gst_structure_get_int(structure, "height", &height);
/* FIXME: We really dont want to do this every time as gobject creation
* really need a clutter_texture_set_from_data call ?
*/
pixb = gdk_pixbuf_new_from_data (GST_BUFFER_DATA (buffer),
GDK_COLORSPACE_RGB,
FALSE,
8,
width,
height,
(3 * width + 3) &~ 3,
NULL,
NULL);
if (pixb)
{
clutter_texture_set_pixbuf (CLUTTER_TEXTURE(user_data), pixb);
g_object_unref(G_OBJECT(pixb));
}
}
static gboolean
lay_pipeline (ClutterAudio *audio)
{
ClutterAudioPrivate *priv;
GstElement *audio_sink = NULL;
priv = audio->priv;
priv->playbin = gst_element_factory_make ("playbin", "playbin");
if (!priv->playbin)
{
g_warning ("Unable to create playbin GST element.");
return FALSE;
}
audio_sink = gst_element_factory_make ("gconfaudiosink", "audio-sink");
if (!audio_sink)
{
audio_sink = gst_element_factory_make ("autoaudiosink", "audio-sink");
if (!audio_sink)
{
audio_sink = gst_element_factory_make ("alsasink", "audio-sink");
g_warning ("Could not create a GST audio_sink. "
"Audio unavailable.");
if (!audio_sink) /* Need to bother ? */
audio_sink = gst_element_factory_make ("fakesink", "audio-sink");
}
}
g_object_set (G_OBJECT (priv->playbin),
"audio-sink", audio_sink,
NULL);
return TRUE;
}
static void
clutter_audio_init (ClutterAudio *audio)
{
ClutterAudioPrivate *priv;
GstBus *bus;
priv = g_new0 (ClutterAudioPrivate, 1);
audio->priv = priv;
if (!lay_pipeline(audio))
{
g_warning("Failed to initiate suitable playback pipeline.");
return;
}
bus = gst_pipeline_get_bus (GST_PIPELINE (priv->playbin));
gst_bus_add_signal_watch (bus);
g_signal_connect_object (bus,
"message::error",
G_CALLBACK (bus_message_error_cb),
audio,
0);
g_signal_connect_object (bus,
"message::eos",
G_CALLBACK (bus_message_eos_cb),
audio,
0);
g_signal_connect_object (bus,
"message::tag",
G_CALLBACK (bus_message_tag_cb),
audio,
0);
g_signal_connect_object (bus,
"message::buffering",
G_CALLBACK (bus_message_buffering_cb),
audio,
0);
g_signal_connect_object (bus,
"message::duration",
G_CALLBACK (bus_message_duration_cb),
audio,
0);
g_signal_connect_object (bus,
"message::state-changed",
G_CALLBACK (bus_message_state_change_cb),
audio,
0);
gst_object_unref (GST_OBJECT (bus));
return;
}
/**
* clutter_audio_new:
*
* Creates #ClutterAudio object.
*
* Return value: A newly allocated #ClutterAudio object.
*/
ClutterAudio*
clutter_audio_new (void)
{
return g_object_new (CLUTTER_TYPE_AUDIO, NULL);
}

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@ -0,0 +1,87 @@
/*
* Clutter.
*
* An OpenGL based 'interactive canvas' library.
*
* Authored By Matthew Allum <mallum@openedhand.com>
* Jorn Baayen <jorn@openedhand.com>
*
* Copyright (C) 2006 OpenedHand
*
* 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, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef _HAVE_CLUTTER_AUDIO_H
#define _HAVE_CLUTTER_AUDIO_H
#include <glib-object.h>
#include <clutter/clutter-media.h>
G_BEGIN_DECLS
#define CLUTTER_TYPE_AUDIO clutter_audio_get_type()
#define CLUTTER_AUDIO(obj) \
(G_TYPE_CHECK_INSTANCE_CAST ((obj), \
CLUTTER_TYPE_AUDIO, ClutterAudio))
#define CLUTTER_AUDIO_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST ((klass), \
CLUTTER_TYPE_AUDIO, ClutterAudioClass))
#define CLUTTER_IS_AUDIO(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE ((obj), \
CLUTTER_TYPE_AUDIO))
#define CLUTTER_IS_AUDIO_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE ((klass), \
CLUTTER_TYPE_AUDIO))
#define CLUTTER_AUDIO_GET_CLASS(obj) \
(G_TYPE_INSTANCE_GET_CLASS ((obj), \
CLUTTER_TYPE_AUDIO, ClutterAudioClass))
typedef struct _ClutterAudio ClutterAudio;
typedef struct _ClutterAudioClass ClutterAudioClass;
typedef struct _ClutterAudioPrivate ClutterAudioPrivate;
/* #define CLUTTER_AUDIO_ERROR clutter_audio_error_quark() */
struct _ClutterAudio
{
GObject parent;
ClutterAudioPrivate *priv;
};
struct _ClutterAudioClass
{
GObjectClass parent_class;
/* Future padding */
void (* _clutter_reserved1) (void);
void (* _clutter_reserved2) (void);
void (* _clutter_reserved3) (void);
void (* _clutter_reserved4) (void);
void (* _clutter_reserved5) (void);
void (* _clutter_reserved6) (void);
};
GType clutter_audio_get_type (void) G_GNUC_CONST;
ClutterAudio *clutter_audio_new (void);
G_END_DECLS
#endif

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clutter/clutter.h
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@ -19,6 +19,7 @@
#include "clutter-video-texture.h"
#include "clutter-label.h"
#include "clutter-alpha.h"
#include "clutter-audio.h"
#include "clutter-enum-types.h"
#endif