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Some interface implementations for video4linux/video4linux2 plugins: a Tuner interface, with which one can select inp...

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Original commit message from CVS:
Some interface implementations for video4linux/video4linux2 plugins:
* a Tuner interface, with which one can select inputs and stations. Audio
work is underway here, but unfinished.
* A Xoverlay interface with which one can do simple overlay. Similar to
the API of the v4l/Xv XFree86 extension. Widget implementation for
GTK-2.0 coming up in the sandbox.
* Colorbalance - for adapting colors (brightness, contrast, etc.) - pretty
basic and maybe somewhat overdesigned. But it'll do for now.

Apart from these interfaces, there's also a loadable library 'xwindowlistener'
that listenes to X for the movement of a window and the overlap of other
windows. This is partly copied from xawtv (and thus partly GPL :(), but it's
needed for the xoverlay interface implementation in the v4l/v4l2 elements.

Lastly, some small changes to remove redundant properties from the v4l/v4l2
elements since these can be done much simpler. Comments appreciated!
This commit is contained in:
Ronald S. Bultje 2003-10-10 12:47:41 +00:00
parent a9e12c1bc9
commit 3a01d9a496
20 changed files with 1950 additions and 6 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
configure.ac
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@ -1287,6 +1287,7 @@ ext/xvid/Makefile
gst-libs/Makefile
gst-libs/gst/Makefile
gst-libs/gst/audio/Makefile
gst-libs/gst/colorbalance/Makefile
gst-libs/gst/floatcast/Makefile
gst-libs/gst/gconf/Makefile
gst-libs/gst/idct/Makefile
@ -1296,7 +1297,10 @@ gst-libs/gst/navigation/Makefile
gst-libs/gst/play/Makefile
gst-libs/gst/resample/Makefile
gst-libs/gst/riff/Makefile
gst-libs/gst/tuner/Makefile
gst-libs/gst/video/Makefile
gst-libs/gst/xoverlay/Makefile
gst-libs/gst/xwindowlistener/Makefile
gst-libs/ext/Makefile
gst-libs/ext/ffmpeg/Makefile
gst-libs/ext/mplex/Makefile

22
gst-libs/gst/Makefile.am
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@ -4,10 +4,20 @@ else
GCONF_DIR=
endif
SUBDIRS = audio idct resample riff floatcast \
$(GCONF_DIR) media-info mixer \
navigation play video
if USE_XFREE
X_DIR=xwindowlistener
else
X_DIR=
endif
DIST_SUBDIRS = audio idct resample riff floatcast \
gconf media-info mixer navigation \
play video
SUBDIRS = audio colorbalance floatcast \
$(GCONF_DIR) idct media-info \
mixer navigation play \
resample riff tuner video \
xoverlay $(X_DIR)
DIST_SUBDIRS = audio colorbalance floatcast \
gconf idct media-info \
mixer navigation play \
resample riff tuner video \
xoverlay xwindowlistener

15
gst-libs/gst/colorbalance/Makefile.am Normal file
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@ -0,0 +1,15 @@
libgstinterfacesincludedir = \
$(includedir)/gstreamer-@GST_MAJORMINOR@/gst/colorbalance
libgstinterfacesinclude_HEADERS = \
colorbalance.h \
colorbalancechannel.h
lib_LTLIBRARIES = libgstcolorbalance.la
libgstcolorbalance_la_SOURCES = \
colorbalance.c \
colorbalancechannel.c
libgstcolorbalance_la_LIBADD =
libgstcolorbalance_la_CFLAGS = $(GST_CFLAGS) $(GST_OPT_CFLAGS)
libgstcolorbalance_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)

103
gst-libs/gst/colorbalance/colorbalance.c Normal file
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@ -0,0 +1,103 @@
/* GStreamer Color Balance
* Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
*
* colorbalance.c: image color balance interface design
* virtual class function wrappers
*
* 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 "colorbalance.h"
static void gst_color_balance_class_init (GstColorBalanceClass *klass);
GType
gst_color_balance_get_type (void)
{
static GType gst_color_balance_type = 0;
if (!gst_color_balance_type) {
static const GTypeInfo gst_color_balance_info = {
sizeof (GstColorBalanceClass),
(GBaseInitFunc) gst_color_balance_class_init,
NULL,
NULL,
NULL,
NULL,
0,
0,
NULL,
};
gst_color_balance_type = g_type_register_static (G_TYPE_INTERFACE,
"GstColorBalance",
&gst_color_balance_info, 0);
g_type_interface_add_prerequisite (gst_color_balance_type,
GST_TYPE_INTERFACE);
}
return gst_color_balance_type;
}
static void
gst_color_balance_class_init (GstColorBalanceClass *klass)
{
/* default virtual functions */
klass->list_channels = NULL;
klass->set_value = NULL;
klass->get_value = NULL;
}
const GList *
gst_color_balance_list_channels (GstColorBalance *balance)
{
GstColorBalanceClass *klass = GST_COLOR_BALANCE_GET_CLASS (balance);
if (klass->list_channels) {
return klass->list_channels (balance);
}
return NULL;
}
void
gst_color_balance_set_value (GstColorBalance *balance,
GstColorBalanceChannel *channel,
gint value)
{
GstColorBalanceClass *klass = GST_COLOR_BALANCE_GET_CLASS (balance);
if (klass->set_value) {
klass->set_value (balance, channel, value);
}
}
gint
gst_color_balance_get_value (GstColorBalance *balance,
GstColorBalanceChannel *channel)
{
GstColorBalanceClass *klass = GST_COLOR_BALANCE_GET_CLASS (balance);
if (klass->get_value) {
return klass->get_value (balance, channel);
}
return channel->min_value;
}

73
gst-libs/gst/colorbalance/colorbalance.h Normal file
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@ -0,0 +1,73 @@
/* GStreamer Color Balance
* Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
*
* color-balance.h: image color balance interface design
*
* 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_COLOR_BALANCE_H__
#define __GST_COLOR_BALANCE_H__
#include <gst/gst.h>
#include <gst/colorbalance/colorbalancechannel.h>
G_BEGIN_DECLS
#define GST_TYPE_COLOR_BALANCE \
(gst_color_balance_get_type ())
#define GST_COLOR_BALANCE(obj) \
(GST_INTERFACE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_COLOR_BALANCE, \
GstColorBalance))
#define GST_COLOR_BALANCE_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_COLOR_BALANCE, \
GstColorBalanceClass))
#define GST_IS_COLOR_BALANCE(obj) \
(GST_INTERFACE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_COLOR_BALANCE))
#define GST_IS_COLOR_BALANCE_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_COLOR_BALANCE))
#define GST_COLOR_BALANCE_GET_CLASS(inst) \
(G_TYPE_INSTANCE_GET_INTERFACE ((inst), GST_TYPE_COLOR_BALANCE, GstColorBalanceClass))
typedef struct _GstColorBalance GstColorBalance;
typedef struct _GstColorBalanceClass {
GTypeInterface klass;
/* virtual functions */
const GList * (* list_channels) (GstColorBalance *balance);
void (* set_value) (GstColorBalance *balance,
GstColorBalanceChannel *channel,
gint value);
gint (* get_value) (GstColorBalance *balance,
GstColorBalanceChannel *channel);
} GstColorBalanceClass;
GType gst_color_balance_get_type (void);
/* virtual class function wrappers */
const GList *
gst_color_balance_list_channels (GstColorBalance *balance);
void gst_color_balance_set_value (GstColorBalance *balance,
GstColorBalanceChannel *channel,
gint value);
gint gst_color_balance_get_value (GstColorBalance *balance,
GstColorBalanceChannel *channel);
G_END_DECLS
#endif /* __GST_COLOR_BALANCE_H__ */

104
gst-libs/gst/colorbalance/colorbalancechannel.c Normal file
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@ -0,0 +1,104 @@
/* GStreamer Color Balance
* Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
*
* colorbalancechannel.c: colorbalance channel object design
*
* 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 "colorbalancechannel.h"
enum {
/* FILL ME */
SIGNAL_VALUE_CHANGED,
LAST_SIGNAL
};
static void gst_color_balance_channel_class_init (GstColorBalanceChannelClass *klass);
static void gst_color_balance_channel_init (GstColorBalanceChannel *balance);
static void gst_color_balance_channel_dispose (GObject *object);
static GObjectClass *parent_class = NULL;
static guint signals[LAST_SIGNAL] = { 0 };
GType
gst_color_balance_channel_get_type (void)
{
static GType gst_color_balance_channel_type = 0;
if (!gst_color_balance_channel_type) {
static const GTypeInfo color_balance_channel_info = {
sizeof (GstColorBalanceChannelClass),
NULL,
NULL,
(GClassInitFunc) gst_color_balance_channel_class_init,
NULL,
NULL,
sizeof (GstColorBalanceChannel),
0,
(GInstanceInitFunc) gst_color_balance_channel_init,
NULL
};
gst_color_balance_channel_type =
g_type_register_static (G_TYPE_OBJECT,
"GstColorBalanceChannel",
&color_balance_channel_info, 0);
}
return gst_color_balance_channel_type;
}
static void
gst_color_balance_channel_class_init (GstColorBalanceChannelClass *klass)
{
GObjectClass *object_klass = (GObjectClass *) klass;
parent_class = g_type_class_ref (G_TYPE_OBJECT);
signals[SIGNAL_VALUE_CHANGED] =
g_signal_new ("value_changed", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GstColorBalanceChannelClass,
value_changed),
NULL, NULL, g_cclosure_marshal_VOID__INT,
G_TYPE_NONE, 1, G_TYPE_INT);
object_klass->dispose = gst_color_balance_channel_dispose;
}
static void
gst_color_balance_channel_init (GstColorBalanceChannel *channel)
{
channel->label = NULL;
channel->min_value = channel->max_value = 0;
}
static void
gst_color_balance_channel_dispose (GObject *object)
{
GstColorBalanceChannel *channel = GST_COLOR_BALANCE_CHANNEL (object);
if (channel->label)
g_free (channel->label);
if (parent_class->dispose)
parent_class->dispose (object);
}

62
gst-libs/gst/colorbalance/colorbalancechannel.h Normal file
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@ -0,0 +1,62 @@
/* GStreamer Color Balance
* Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
*
* colorbalancechannel.h: individual channel object
*
* 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_COLOR_BALANCE_CHANNEL_H__
#define __GST_COLOR_BALANCE_CHANNEL_H__
#include <gst/gst.h>
G_BEGIN_DECLS
#define GST_TYPE_COLOR_BALANCE_CHANNEL \
(gst_color_balance_channel_get_type ())
#define GST_COLOR_BALANCE_CHANNEL(obj) \
(G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_COLOR_BALANCE_CHANNEL, \
GstColorBalanceChannel))
#define GST_COLOR_BALANCE_CHANNEL_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_COLOR_BALANCE_CHANNEL, \
GstColorBalanceChannelClass))
#define GST_IS_COLOR_BALANCE_CHANNEL(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_COLOR_BALANCE_CHANNEL))
#define GST_IS_COLOR_BALANCE_CHANNEL_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_COLOR_BALANCE_CHANNEL))
typedef struct _GstColorBalanceChannel {
GObject parent;
gchar *label;
gint min_value,
max_value;
} GstColorBalanceChannel;
typedef struct _GstColorBalanceChannelClass {
GObjectClass parent;
/* signals */
void (* value_changed) (GstColorBalanceChannel *channel,
gint value);
} GstColorBalanceChannelClass;
GType gst_color_balance_channel_get_type (void);
G_END_DECLS
#endif /* __GST_COLOR_BALANCE_CHANNEL_H__ */

17
gst-libs/gst/tuner/Makefile.am Normal file
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@ -0,0 +1,17 @@
libgstinterfacesincludedir = \
$(includedir)/gstreamer-@GST_MAJORMINOR@/gst/tuner
libgstinterfacesinclude_HEADERS = \
tuner.h \
tunernorm.h \
tunerchannel.h
lib_LTLIBRARIES = libgsttuner.la
libgsttuner_la_SOURCES = \
tuner.c \
tunernorm.c \
tunerchannel.c
libgsttuner_la_LIBADD =
libgsttuner_la_CFLAGS = $(GST_CFLAGS) $(GST_OPT_CFLAGS)
libgsttuner_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)

190
gst-libs/gst/tuner/tuner.c Normal file
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@ -0,0 +1,190 @@
/* GStreamer Tuner
* Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
*
* tuner.c: tuner design virtual class function wrappers
*
* 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 "tuner.h"
static void gst_tuner_class_init (GstTunerClass *klass);
GType
gst_tuner_get_type (void)
{
static GType gst_tuner_type = 0;
if (!gst_tuner_type) {
static const GTypeInfo gst_tuner_info = {
sizeof (GstTunerClass),
(GBaseInitFunc) gst_tuner_class_init,
NULL,
NULL,
NULL,
NULL,
0,
0,
NULL,
};
gst_tuner_type = g_type_register_static (G_TYPE_INTERFACE,
"GstTuner",
&gst_tuner_info, 0);
g_type_interface_add_prerequisite (gst_tuner_type,
GST_TYPE_INTERFACE);
}
return gst_tuner_type;
}
static void
gst_tuner_class_init (GstTunerClass *klass)
{
/* default virtual functions */
klass->list_channels = NULL;
klass->set_channel = NULL;
klass->get_channel = NULL;
klass->list_norms = NULL;
klass->set_norm = NULL;
klass->get_norm = NULL;
klass->set_frequency = NULL;
klass->get_frequency = NULL;
klass->signal_strength = NULL;
}
const GList *
gst_tuner_list_channels (GstTuner *tuner)
{
GstTunerClass *klass = GST_TUNER_GET_CLASS (tuner);
if (klass->list_channels) {
return klass->list_channels (tuner);
}
return NULL;
}
void
gst_tuner_set_channel (GstTuner *tuner,
GstTunerChannel *channel)
{
GstTunerClass *klass = GST_TUNER_GET_CLASS (tuner);
if (klass->set_channel) {
klass->set_channel (tuner, channel);
}
}
const GstTunerChannel *
gst_tuner_get_channel (GstTuner *tuner)
{
GstTunerClass *klass = GST_TUNER_GET_CLASS (tuner);
if (klass->get_channel) {
return klass->get_channel (tuner);
}
return NULL;
}
const GList *
gst_tuner_list_norms (GstTuner *tuner)
{
GstTunerClass *klass = GST_TUNER_GET_CLASS (tuner);
if (klass->list_norms) {
return klass->list_norms (tuner);
}
return NULL;
}
void
gst_tuner_set_norm (GstTuner *tuner,
GstTunerNorm *norm)
{
GstTunerClass *klass = GST_TUNER_GET_CLASS (tuner);
if (klass->set_norm) {
klass->set_norm (tuner, norm);
}
}
const GstTunerNorm *
gst_tuner_get_norm (GstTuner *tuner)
{
GstTunerClass *klass = GST_TUNER_GET_CLASS (tuner);
if (klass->get_norm) {
return klass->get_norm (tuner);
}
return NULL;
}
void
gst_tuner_set_frequency (GstTuner *tuner,
GstTunerChannel *channel,
gulong frequency)
{
GstTunerClass *klass = GST_TUNER_GET_CLASS (tuner);
g_return_if_fail (GST_TUNER_CHANNEL_HAS_FLAG (channel,
GST_TUNER_CHANNEL_FREQUENCY));
if (klass->set_frequency) {
klass->set_frequency (tuner, channel, frequency);
}
}
gulong
gst_tuner_get_frequency (GstTuner *tuner,
GstTunerChannel *channel)
{
GstTunerClass *klass = GST_TUNER_GET_CLASS (tuner);
g_return_val_if_fail (GST_TUNER_CHANNEL_HAS_FLAG (channel,
GST_TUNER_CHANNEL_FREQUENCY), 0);
if (klass->get_frequency) {
return klass->get_frequency (tuner, channel);
}
return 0;
}
gint
gst_tuner_signal_strength (GstTuner *tuner,
GstTunerChannel *channel)
{
GstTunerClass *klass = GST_TUNER_GET_CLASS (tuner);
g_return_val_if_fail (GST_TUNER_CHANNEL_HAS_FLAG (channel,
GST_TUNER_CHANNEL_FREQUENCY), 0);
if (klass->signal_strength) {
return klass->signal_strength (tuner, channel);
}
return 0;
}

96
gst-libs/gst/tuner/tuner.h Normal file
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/* GStreamer Tuner
* Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
*
* tuner.h: tuner interface design
*
* 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_TUNER_H__
#define __GST_TUNER_H__
#include <gst/gst.h>
#include <gst/tuner/tunernorm.h>
#include <gst/tuner/tunerchannel.h>
G_BEGIN_DECLS
#define GST_TYPE_TUNER \
(gst_tuner_get_type ())
#define GST_TUNER(obj) \
(GST_INTERFACE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_TUNER, GstTuner))
#define GST_TUNER_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_TUNER, GstTunerClass))
#define GST_IS_TUNER(obj) \
(GST_INTERFACE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_TUNER))
#define GST_IS_TUNER_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_TUNER))
#define GST_TUNER_GET_CLASS(inst) \
(G_TYPE_INSTANCE_GET_INTERFACE ((inst), GST_TYPE_TUNER, GstTunerClass))
typedef struct _GstTuner GstTuner;
typedef struct _GstTunerClass {
GTypeInterface klass;
/* virtual functions */
const GList * (* list_channels) (GstTuner *tuner);
void (* set_channel) (GstTuner *tuner,
GstTunerChannel *channel);
const GstTunerChannel *
(* get_channel) (GstTuner *tuner);
const GList * (* list_norms) (GstTuner *tuner);
void (* set_norm) (GstTuner *tuner,
GstTunerNorm *norm);
const GstTunerNorm *
(* get_norm) (GstTuner *tuner);
void (* set_frequency) (GstTuner *tuner,
GstTunerChannel *channel,
gulong frequency);
gulong (* get_frequency) (GstTuner *tuner,
GstTunerChannel *channel);
gint (* signal_strength) (GstTuner *tuner,
GstTunerChannel *channel);
} GstTunerClass;
GType gst_tuner_get_type (void);
/* virtual class function wrappers */
const GList * gst_tuner_list_channels (GstTuner *tuner);
void gst_tuner_set_channel (GstTuner *tuner,
GstTunerChannel *channel);
const GstTunerChannel *
gst_tuner_get_channel (GstTuner *tuner);
const GList * gst_tuner_list_norms (GstTuner *tuner);
void gst_tuner_set_norm (GstTuner *tuner,
GstTunerNorm *channel);
const GstTunerNorm *
gst_tuner_get_norm (GstTuner *tuner);
void gst_tuner_set_frequency (GstTuner *tuner,
GstTunerChannel *channel,
gulong frequency);
gulong gst_tuner_get_frequency (GstTuner *tuner,
GstTunerChannel *channel);
gint gst_tuner_signal_strength (GstTuner *tuner,
GstTunerChannel *channel);
G_END_DECLS
#endif /* __GST_TUNER_H__ */

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/* GStreamer Tuner
* Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
*
* tunerchannel.c: tuner channel object design
*
* 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 "tunerchannel.h"
enum {
/* FILL ME */
SIGNAL_FREQUENCY_CHANGED,
SIGNAL_SIGNAL_CHANGED,
LAST_SIGNAL
};
static void gst_tuner_channel_class_init (GstTunerChannelClass *klass);
static void gst_tuner_channel_init (GstTunerChannel *channel);
static void gst_tuner_channel_dispose (GObject *object);
static GObjectClass *parent_class = NULL;
static guint signals[LAST_SIGNAL] = { 0 };
GType
gst_tuner_channel_get_type (void)
{
static GType gst_tuner_channel_type = 0;
if (!gst_tuner_channel_type) {
static const GTypeInfo tuner_channel_info = {
sizeof (GstTunerChannelClass),
NULL,
NULL,
(GClassInitFunc) gst_tuner_channel_class_init,
NULL,
NULL,
sizeof (GstTunerChannel),
0,
(GInstanceInitFunc) gst_tuner_channel_init,
NULL
};
gst_tuner_channel_type =
g_type_register_static (G_TYPE_OBJECT,
"GstTunerChannel",
&tuner_channel_info, 0);
}
return gst_tuner_channel_type;
}
static void
gst_tuner_channel_class_init (GstTunerChannelClass *klass)
{
GObjectClass *object_klass = (GObjectClass *) klass;
parent_class = g_type_class_ref (G_TYPE_OBJECT);
signals[SIGNAL_FREQUENCY_CHANGED] =
g_signal_new ("frequency_changed", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GstTunerChannelClass,
frequency_changed),
NULL, NULL, g_cclosure_marshal_VOID__ULONG,
G_TYPE_NONE, 1, G_TYPE_ULONG);
signals[SIGNAL_SIGNAL_CHANGED] =
g_signal_new ("signal_changed", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GstTunerChannelClass,
signal_changed),
NULL, NULL, g_cclosure_marshal_VOID__INT,
G_TYPE_NONE, 1, G_TYPE_INT);
object_klass->dispose = gst_tuner_channel_dispose;
}
static void
gst_tuner_channel_init (GstTunerChannel *channel)
{
channel->label = NULL;
channel->flags = 0;
channel->min_frequency = channel->max_frequency = 0;
channel->min_signal = channel->max_signal = 0;
}
static void
gst_tuner_channel_dispose (GObject *object)
{
GstTunerChannel *channel = GST_TUNER_CHANNEL (object);
if (channel->label)
g_free (channel->label);
if (parent_class->dispose)
parent_class->dispose (object);
}

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/* GStreamer Tuner
* Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
*
* tunerchannel.h: tuner channel object design
*
* 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_TUNER_CHANNEL_H__
#define __GST_TUNER_CHANNEL_H__
#include <gst/gst.h>
G_BEGIN_DECLS
#define GST_TYPE_TUNER_CHANNEL \
(gst_tuner_channel_get_type ())
#define GST_TUNER_CHANNEL(obj) \
(G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_TUNER_CHANNEL, \
GstTunerChannel))
#define GST_TUNER_CHANNEL_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_TUNER_CHANNEL, \
GstTunerChannelClass))
#define GST_IS_TUNER_CHANNEL(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_TUNER_CHANNEL))
#define GST_IS_TUNER_CHANNEL_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_TUNER_CHANNEL))
typedef enum {
GST_TUNER_CHANNEL_INPUT = (1<<0),
GST_TUNER_CHANNEL_OUTPUT = (1<<1),
GST_TUNER_CHANNEL_FREQUENCY = (1<<2),
GST_TUNER_CHANNEL_AUDIO = (1<<3),
} GstTunerChannelFlags;
#define GST_TUNER_CHANNEL_HAS_FLAG(channel, flag) \
((channel)->flags & flag)
typedef struct _GstTunerChannel {
GObject parent;
gchar *label;
GstTunerChannelFlags flags;
gulong min_frequency,
max_frequency;
gint min_signal,
max_signal;
} GstTunerChannel;
typedef struct _GstTunerChannelClass {
GObjectClass parent;
/* signals */
void (*frequency_changed) (GstTunerChannel *tuner,
gulong frequency);
void (*signal_changed) (GstTunerChannel *tuner,
gint signal);
} GstTunerChannelClass;
GType gst_tuner_channel_get_type (void);
G_END_DECLS
#endif /* __GST_TUNER_CHANNEL_H__ */

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/* GStreamer Tuner
* Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
*
* tunernorm.c: tuner norm object design
*
* 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 "tunernorm.h"
enum {
/* FILL ME */
LAST_SIGNAL
};
static void gst_tuner_norm_class_init (GstTunerNormClass *klass);
static void gst_tuner_norm_init (GstTunerNorm *norm);
static void gst_tuner_norm_dispose (GObject *object);
static GObjectClass *parent_class = NULL;
/*static guint signals[LAST_SIGNAL] = { 0 };*/
GType
gst_tuner_norm_get_type (void)
{
static GType gst_tuner_norm_type = 0;
if (!gst_tuner_norm_type) {
static const GTypeInfo tuner_norm_info = {
sizeof (GstTunerNormClass),
NULL,
NULL,
(GClassInitFunc) gst_tuner_norm_class_init,
NULL,
NULL,
sizeof (GstTunerNorm),
0,
(GInstanceInitFunc) gst_tuner_norm_init,
NULL
};
gst_tuner_norm_type =
g_type_register_static (G_TYPE_OBJECT,
"GstTunerNorm",
&tuner_norm_info, 0);
}
return gst_tuner_norm_type;
}
static void
gst_tuner_norm_class_init (GstTunerNormClass *klass)
{
GObjectClass *object_klass = (GObjectClass *) klass;
parent_class = g_type_class_ref (G_TYPE_OBJECT);
object_klass->dispose = gst_tuner_norm_dispose;
}
static void
gst_tuner_norm_init (GstTunerNorm *norm)
{
norm->label = NULL;
norm->fps = 0.;
}
static void
gst_tuner_norm_dispose (GObject *object)
{
GstTunerNorm *norm = GST_TUNER_NORM (object);
if (norm->label)
g_free (norm->label);
if (parent_class->dispose)
parent_class->dispose (object);
}

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/* GStreamer Tuner
* Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
*
* tunernorm.h: tuner norm object design
*
* 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_TUNER_NORM_H__
#define __GST_TUNER_NORM_H__
#include <gst/gst.h>
G_BEGIN_DECLS
#define GST_TYPE_TUNER_NORM \
(gst_tuner_norm_get_type ())
#define GST_TUNER_NORM(obj) \
(G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_TUNER_NORM, GstTunerNorm))
#define GST_TUNER_NORM_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_TUNER_NORM, GstTunerNormClass))
#define GST_IS_TUNER_NORM(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_TUNER_NORM))
#define GST_IS_TUNER_NORM_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_TUNER_NORM))
typedef struct _GstTunerNorm {
GObject parent;
gchar *label;
gfloat fps;
} GstTunerNorm;
typedef struct _GstTunerNormClass {
GObjectClass parent;
} GstTunerNormClass;
GType gst_tuner_norm_get_type (void);
G_END_DECLS
#endif /* __GST_TUNER_NORM_H__ */

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libgstinterfacesincludedir = \
$(includedir)/gstreamer-@GST_MAJORMINOR@/gst/xoverlay
libgstinterfacesinclude_HEADERS = xoverlay.h
lib_LTLIBRARIES = libgstxoverlay.la
libgstxoverlay_la_SOURCES = xoverlay.c
libgstxoverlay_la_LIBADD =
libgstxoverlay_la_CFLAGS = $(GST_CFLAGS) $(GST_OPT_CFLAGS)
libgstxoverlay_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)

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/* GStreamer X-based Overlay
* Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
*
* tv-mixer.c: tv-mixer design virtual class function wrappers
*
* 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 "xoverlay.h"
static void gst_x_overlay_class_init (GstXOverlayClass *klass);
GType
gst_x_overlay_get_type (void)
{
static GType gst_x_overlay_type = 0;
if (!gst_x_overlay_type) {
static const GTypeInfo gst_x_overlay_info = {
sizeof (GstXOverlayClass),
(GBaseInitFunc) gst_x_overlay_class_init,
NULL,
NULL,
NULL,
NULL,
0,
0,
NULL,
};
gst_x_overlay_type = g_type_register_static (G_TYPE_INTERFACE,
"GstXOverlay",
&gst_x_overlay_info, 0);
g_type_interface_add_prerequisite (gst_x_overlay_type,
GST_TYPE_INTERFACE);
}
return gst_x_overlay_type;
}
static void
gst_x_overlay_class_init (GstXOverlayClass *klass)
{
/* default virtual functions */
klass->set_xwindow_id = NULL;
}
void
gst_x_overlay_set_xwindow_id (GstXOverlay *overlay,
XID xwindow_id)
{
GstXOverlayClass *klass = GST_X_OVERLAY_GET_CLASS (overlay);
if (klass->set_xwindow_id) {
klass->set_xwindow_id (overlay, xwindow_id);
}
}

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/* GStreamer X-based Overlay
* Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
*
* x-overlay.h: X-based overlay interface design
*
* 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_X_OVERLAY_H__
#define __GST_X_OVERLAY_H__
#include <gst/gst.h>
#include <X11/Xlib.h>
G_BEGIN_DECLS
#define GST_TYPE_X_OVERLAY \
(gst_x_overlay_get_type ())
#define GST_X_OVERLAY(obj) \
(GST_INTERFACE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_X_OVERLAY, GstXOverlay))
#define GST_X_OVERLAY_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_X_OVERLAY, GstXOverlayClass))
#define GST_IS_X_OVERLAY(obj) \
(GST_INTERFACE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_X_OVERLAY))
#define GST_IS_X_OVERLAY_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_X_OVERLAY))
#define GST_X_OVERLAY_GET_CLASS(inst) \
(G_TYPE_INSTANCE_GET_INTERFACE ((inst), GST_TYPE_X_OVERLAY, GstXOverlayClass))
typedef struct _GstXOverlay GstXOverlay;
typedef struct _GstXOverlayClass {
GTypeInterface klass;
/* virtual functions */
void (* set_xwindow_id) (GstXOverlay *overlay,
XID xwindow_id);
} GstXOverlayClass;
GType gst_x_overlay_get_type (void);
/* virtual class function wrappers */
void gst_x_overlay_set_xwindow_id (GstXOverlay *overlay,
XID xwindow_id);
G_END_DECLS
#endif /* __GST_X_OVERLAY_H__ */

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librarydir = $(libdir)/gstreamer-@GST_MAJORMINOR@
library_LTLIBRARIES = libgstxwindowlistener.la
libgstxwindowlistener_la_SOURCES = xwindowlistener.c
libraryincludedir = $(includedir)/gstreamer-@GST_MAJORMINOR@/gst/xwindowlistener
libraryinclude_HEADERS = xwindowlistener.h
libgstxwindowlistener_la_CFLAGS = $(GST_CFLAGS) $(X_CFLAGS)
libgstxwindowlistener_la_LIBADD = $(GST_LIBS) $(GST_PLUGIN_LIBS) $(X_LIBS)

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/* G-Streamer X11 Window event/motion listener
* Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
*
* xwindowlistener.c: implementation of the object
*
* 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 "xwindowlistener.h"
#define NUM_CLIPS 1024
static void gst_x_window_listener_class_init (GstXWindowListenerClass *klass);
static void gst_x_window_listener_init (GstXWindowListener *xwin);
static void gst_x_window_listener_dispose (GObject *object);
static void gst_xwin_start (GstXWindowListener *xwin);
static void gst_xwin_stop (GstXWindowListener *xwin);
static GObjectClass *parent_class = NULL;
GType
gst_x_window_listener_get_type (void)
{
static GType x_window_listener_type = 0;
if (!x_window_listener_type) {
static const GTypeInfo x_window_listener_info = {
sizeof (GstXWindowListenerClass),
NULL,
NULL,
(GClassInitFunc) gst_x_window_listener_class_init,
NULL,
NULL,
sizeof (GstXWindowListener),
0,
(GInstanceInitFunc) gst_x_window_listener_init,
NULL
};
x_window_listener_type =
g_type_register_static (G_TYPE_OBJECT,
"GstXWindowListener",
&x_window_listener_info, 0);
}
return x_window_listener_type;
}
static void
gst_x_window_listener_class_init (GstXWindowListenerClass *klass)
{
GObjectClass *object_klass = (GObjectClass *) klass;
parent_class = g_type_class_ref (G_TYPE_OBJECT);
object_klass->dispose = gst_x_window_listener_dispose;
}
static void
gst_x_window_listener_init (GstXWindowListener *xwin)
{
xwin->xwindow_id = 0;
xwin->display_name = NULL;
xwin->map_window_func = NULL;
xwin->set_window_func = NULL;
xwin->thread = NULL;
}
static void
gst_x_window_listener_dispose (GObject *object)
{
GstXWindowListener *xwin = GST_X_WINDOW_LISTENER (object);
/* stop overlay */
gst_x_window_listener_set_xid (xwin, 0);
if (xwin->display_name) {
g_free (xwin->display_name);
}
if (parent_class->dispose) {
parent_class->dispose (object);
}
}
GstXWindowListener *
gst_x_window_listener_new (gchar *display,
MapWindowFunc map_window_func,
SetWindowFunc set_window_func,
gpointer private_data)
{
GstXWindowListener *xwin =
g_object_new (GST_TYPE_X_WINDOW_LISTENER, NULL);
xwin->display_name = g_strdup (display);
xwin->map_window_func = map_window_func;
xwin->set_window_func = set_window_func;
xwin->private_data = private_data;
return xwin;
}
void
gst_x_window_listener_set_xid (GstXWindowListener *xwin,
XID id)
{
g_return_if_fail (xwin != NULL);
if (id == xwin->xwindow_id) {
return;
}
if (xwin->xwindow_id && xwin->thread) {
gst_xwin_stop (xwin);
}
xwin->xwindow_id = id;
if (xwin->xwindow_id &&
xwin->display_name &&
xwin->display_name[0] == ':') {
g_return_if_fail (xwin->map_window_func != NULL);
g_return_if_fail (xwin->set_window_func != NULL);
gst_xwin_start (xwin);
}
}
/*
* The following code works as follows:
* - the "client" (the one who uses this object) sets an XID
* - we add a child XWindow to this XID, and follow motion/events
* - after each event, we determine the position, size and clips
* - next, we call the per-instance virtual functions set by the client
* - and we do all this in an endless cycle
*
* Unfortunately, part of this code is inspired by XawTV, so the
* runtime license for this code as a whole will be GPL unless
* someone can rewrite this or ask permission to the original
* author (Gerd Knorr <kraxel@bytesex.org>) to let us re-license
* this piece of code to LGPL.
*/
#define DEBUG(format, args...) \
GST_DEBUG ("XWL: " format, ##args)
static void
gst_xwin_set_overlay (GstXWindowListener *xwin,
gboolean on)
{
xwin->map_window_func (xwin->private_data, on);
/* remember me */
xwin->ov_visible = on;
}
static gboolean
gst_xwin_refresh (gpointer data)
{
GstXWindowListener *xwin = GST_X_WINDOW_LISTENER (data);
Window win, tmp;
XSetWindowAttributes xswa;
XWindowAttributes attr;
g_mutex_lock (xwin->main_lock);
win = DefaultRootWindow (xwin->main_display);
XGetWindowAttributes (xwin->main_display, win, &attr);
xwin->ov_refresh_id = 0;
if (!xwin->ov_move && xwin->ov_map &&
xwin->ov_visibility == VisibilityUnobscured) {
g_mutex_unlock (xwin->main_lock);
return FALSE; /* skip */
}
if (xwin->ov_map &&
xwin->ov_visibility != VisibilityFullyObscured) {
xwin->ov_refresh = TRUE;
}
xswa.override_redirect = True;
xswa.backing_store = NotUseful;
xswa.save_under = False;
tmp = XCreateWindow (xwin->main_display,win, 0, 0,
attr.width, attr.height, 0,
CopyFromParent, InputOutput, CopyFromParent,
(CWSaveUnder | CWBackingStore| CWOverrideRedirect ),
&xswa);
XMapWindow (xwin->main_display, tmp);
XUnmapWindow (xwin->main_display, tmp);
XDestroyWindow (xwin->main_display, tmp);
xwin->ov_move = FALSE;
g_mutex_unlock (xwin->main_lock);
/* once */
return FALSE;
}
static int
x11_error_dev_null (Display *display,
XErrorEvent *event)
{
return 0;
}
#define ADD_CLIP(_x, _y, _w, _h) \
do { \
GstXWindowClip *clip = &xwin->clips[xwin->num_clips++]; \
clip->x_offset = _x; \
clip->y_offset = _y; \
clip->width = _w; \
clip->height = _h; \
clip->data = NULL; \
} while (0);
static void
gst_xwin_set_clips (GstXWindowListener *xwin)
{
Window root, rroot, parent, *kids, me;
XWindowAttributes attr;
guint numkids;
gint i;
gint x1, y1, w1, h1;
void *old_handler;
old_handler = XSetErrorHandler (x11_error_dev_null);
if (xwin->num_clips != 0)
xwin->ov_conf = TRUE;
xwin->num_clips = 0;
root = DefaultRootWindow (xwin->display);
XGetWindowAttributes (xwin->display, root, &attr);
if (xwin->x < 0)
ADD_CLIP (0, 0, -xwin->x, xwin->h);
if (xwin->y < 0)
ADD_CLIP (0, 0, xwin->w, -xwin->y);
if ((xwin->x + xwin->w) > attr.width)
ADD_CLIP (attr.width - xwin->x, 0, xwin->w, xwin->h);
if ((xwin->y + xwin->h) > attr.height)
ADD_CLIP (0, attr.height - xwin->y, xwin->w, xwin->h);
me = xwin->child;
while (1) {
XQueryTree (xwin->display, me, &rroot, &parent, &kids, &numkids);
if (numkids)
XFree (kids);
if (root == parent)
break;
me = parent;
}
XQueryTree (xwin->display, root, &rroot, &parent, &kids, &numkids);
for (i = 0; i < numkids; i++)
if (kids[i] == me)
break;
for (i++; i < numkids; i++) {
XGetWindowAttributes (xwin->display, kids[i], &attr);
if (attr.map_state != IsViewable)
continue;
x1 = attr.x - xwin->x;
y1 = attr.y - xwin->y;
w1 = attr.width + 2 * attr.border_width;
h1 = attr.height + 2 * attr.border_width;
if (((x1 + w1) < 0) || (x1 > xwin->w) ||
((y1 + h1) < 0) || (y1 > xwin->h))
continue;
if (x1 < 0)
x1 = 0;
if (y1 < 0)
y1 = 0;
ADD_CLIP (x1, y1, w1, h1);
}
XFree (kids);
if (xwin->num_clips != 0)
xwin->ov_conf = TRUE;
XSetErrorHandler (old_handler);
}
static gboolean
gst_xwin_window (GstXWindowListener *xwin)
{
if (xwin->ov_map && xwin->ov_wmmap &&
xwin->ov_visibility != VisibilityFullyObscured) {
/* visible */
if (xwin->ov_visibility == VisibilityPartiallyObscured) {
/* set clips */
gst_xwin_set_clips (xwin);
}
if (xwin->ov_conf) {
xwin->set_window_func (xwin->private_data,
xwin->x, xwin->y,
xwin->w, xwin->h,
xwin->clips, xwin->num_clips);
if (!xwin->ov_visible)
gst_xwin_set_overlay (xwin, TRUE);
g_mutex_lock (xwin->main_lock);
if (xwin->ov_refresh_id)
g_source_remove (xwin->ov_refresh_id);
xwin->ov_refresh_id =
g_timeout_add (200, (GSourceFunc) gst_xwin_refresh,
(gpointer) xwin);
xwin->ov_conf = FALSE;
g_mutex_unlock (xwin->main_lock);
}
} else {
/* not visible */
if (xwin->ov_conf && xwin->ov_visible) {
gst_xwin_set_overlay (xwin, FALSE);
g_mutex_lock (xwin->main_lock);
if (xwin->ov_refresh_id)
g_source_remove (xwin->ov_refresh_id);
xwin->ov_refresh_id =
g_timeout_add (200, (GSourceFunc) gst_xwin_refresh,
(gpointer) xwin);
xwin->ov_conf = FALSE;
g_mutex_unlock (xwin->main_lock);
}
}
xwin->ov_conf_id = 0;
/* once is enough */
return FALSE;
}
static void
gst_xwin_configure (GstXWindowListener *xwin)
{
#if 0
/* This part is disabled, because the idle task will be done
* in the main thread instead of here. */
if (!xwin->ov_conf_id)
xwin->ov_conf_id =
g_idle_add ((GSourceFunc) gst_rec_xoverlay_window,
(gpointer) xwin);
#endif
gst_xwin_window ((gpointer) xwin);
}
static void
gst_xwin_resize (GstXWindowListener *xwin)
{
Drawable drawable, parent, *kids, root;
guint numkids;
XWindowAttributes attr;
XGetWindowAttributes (xwin->display,
xwin->xwindow_id, &attr);
XMoveResizeWindow (xwin->display, xwin->child,
0, 0, attr.width, attr.height);
/* set the video window - the first clip is our own window */
xwin->x = 0;
xwin->y = 0;
xwin->w = attr.width;
xwin->h = attr.height;
drawable = xwin->child;
while (1) {
XQueryTree (xwin->display, drawable,
&root, &parent, &kids, &numkids);
if (numkids)
XFree(kids);
drawable = parent;
XGetWindowAttributes (xwin->display, drawable, &attr);
xwin->x += attr.x;
xwin->y += attr.y;
if (parent == attr.root)
break;
}
xwin->ov_conf = TRUE;
xwin->ov_move = TRUE;
gst_xwin_configure (xwin);
}
static void
gst_xwin_init_window (GstXWindowListener *xwin)
{
XWindowAttributes attr;
/* start values */
xwin->ov_conf = TRUE;
xwin->ov_map = xwin->ov_wmmap = TRUE;
xwin->ov_move = TRUE;
xwin->ov_refresh = FALSE;
g_mutex_lock (xwin->main_lock);
xwin->ov_conf_id = xwin->ov_refresh_id = 0;
g_mutex_unlock (xwin->main_lock);
xwin->ov_visibility = VisibilityFullyObscured;
/* start the memory that we'll use */
xwin->clips = g_malloc (sizeof (GstXWindowClip) * NUM_CLIPS);
xwin->num_clips = 0;
/* open connection to X server */
xwin->display = XOpenDisplay (xwin->display_name);
/* window */
XGetWindowAttributes (xwin->display,
xwin->xwindow_id, &attr);
xwin->child = XCreateSimpleWindow (xwin->display,
xwin->xwindow_id, 0, 0,
attr.width, attr.height, 0, 0, 0);
/* listen to certain X events */
XSelectInput (xwin->display, xwin->xwindow_id,
StructureNotifyMask);
XSelectInput (xwin->display, xwin->child,
VisibilityChangeMask | StructureNotifyMask);
XSelectInput (xwin->display, DefaultRootWindow (xwin->display),
VisibilityChangeMask | StructureNotifyMask |
SubstructureNotifyMask);
/* show */
XMapWindow (xwin->display, xwin->child);
gst_xwin_resize (xwin);
}
static void
gst_xwin_exit_window (GstXWindowListener *xwin)
{
/* disable overlay */
gst_xwin_set_overlay (xwin, FALSE);
/* delete idle funcs */
if (xwin->ov_conf_id != 0)
g_source_remove (xwin->ov_conf_id);
g_mutex_lock (xwin->main_lock);
if (xwin->ov_refresh_id != 0)
g_source_remove (xwin->ov_refresh_id);
g_mutex_unlock (xwin->main_lock);
/* get away from X and free mem */
XDestroyWindow (xwin->display, xwin->child);
XCloseDisplay (xwin->display);
g_free (xwin->clips);
}
static gpointer
gst_xwin_thread (gpointer data)
{
GstXWindowListener *xwin = GST_X_WINDOW_LISTENER (data);
XEvent event;
/* Hi, I'm GStreamer. What's your name? */
gst_xwin_init_window (xwin);
while (xwin->cycle) {
XNextEvent (xwin->display, &event);
if (!xwin->cycle)
break;
if ((event.type == ConfigureNotify &&
event.xconfigure.window == xwin->xwindow_id) ||
(event.type == MapNotify &&
event.xmap.window == xwin->xwindow_id) ||
(event.type == UnmapNotify &&
event.xunmap.window == xwin->xwindow_id)) {
/* the 'parent' window, i.e. the widget provided by client */
switch (event.type) {
case MapNotify:
xwin->ov_map = TRUE;
xwin->ov_conf = TRUE;
gst_xwin_configure (xwin);
break;
case UnmapNotify:
xwin->ov_map = FALSE;
xwin->ov_conf = TRUE;
gst_xwin_configure (xwin);
break;
case ConfigureNotify:
gst_xwin_resize (xwin);
break;
default:
/* nothing */
break;
}
} else if (event.xany.window == xwin->child) {
/* our own private window */
switch (event.type) {
case Expose:
if (!event.xexpose.count) {
if (xwin->ov_refresh) {
xwin->ov_refresh = FALSE;
} else {
xwin->ov_conf = TRUE;
gst_xwin_configure (xwin);
}
}
break;
case VisibilityNotify:
xwin->ov_visibility = event.xvisibility.state;
if (xwin->ov_refresh) {
if (event.xvisibility.state != VisibilityFullyObscured)
xwin->ov_refresh = FALSE;
} else {
xwin->ov_conf = TRUE;
gst_xwin_configure (xwin);
}
break;
default:
/* nothing */
break;
}
} else {
/* root window */
switch (event.type) {
case MapNotify:
case UnmapNotify:
/* are we still visible? */
if (!xwin->ov_refresh) {
XWindowAttributes attr;
gboolean on;
XGetWindowAttributes (xwin->display,
xwin->xwindow_id, &attr);
on = (attr.map_state == IsViewable);
xwin->ov_wmmap = on;
xwin->ov_conf = TRUE;
gst_xwin_configure (xwin);
}
break;
case ConfigureNotify:
if (!xwin->ov_refresh) {
gst_xwin_resize (xwin);
}
break;
default:
/* nothing */
break;
}
}
}
/* Nice to have met you, see you later */
gst_xwin_exit_window (xwin);
g_thread_exit (NULL);
return NULL;
}
static void
gst_xwin_start (GstXWindowListener *xwin)
{
DEBUG ("Starting XWindow listener");
xwin->cycle = TRUE;
/* we use this main_display for two things: first of all,
* the window needs to be 'refreshed' to remove artifacts
* after every move. Secondly, we use this to 'unhang' the
* event handler after we've stopped it */
xwin->main_lock = g_mutex_new ();
xwin->main_display = XOpenDisplay (xwin->display_name);
xwin->thread = g_thread_create (gst_xwin_thread,
(gpointer) xwin,
TRUE, NULL);
DEBUG ("Started X-overlay");
}
static void
gst_xwin_stop (GstXWindowListener *xwin)
{
DEBUG ("Stopping XWindow listener");
xwin->cycle = FALSE;
/* now, the event loop will hang. To prevent this from hanging
* our app, app, we re-do our refresh hack. Oh man, this is
* ugly. But it works. :). */
g_mutex_lock (xwin->main_lock);
if (xwin->ov_refresh_id)
g_source_remove (xwin->ov_refresh_id);
g_mutex_unlock (xwin->main_lock);
gst_xwin_refresh ((gpointer) xwin);
g_thread_join (xwin->thread);
XCloseDisplay (xwin->main_display);
g_mutex_free (xwin->main_lock);
DEBUG ("Stopped X-overlay");
}
/*
* End of code inspired by XawTV.
*/
static gboolean
plugin_init (GModule *module,
GstPlugin *plugin)
{
gst_plugin_set_longname (plugin,
"X11-based XWindow event/motion listener");
return TRUE;
}
GstPluginDesc plugin_desc = {
GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"xwindowlistener",
plugin_init
};

116
gst-libs/gst/xwindowlistener/xwindowlistener.h Normal file
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@ -0,0 +1,116 @@
/* G-Streamer X11 Window event/motion listener
* Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
*
* xwindowlistener.h: object definition
*
* 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 __X_WINDOW_LISTENER_H__
#define __X_WINDOW_LISTENER_H__
#include <gst/gst.h>
#include <X11/Xlib.h>
G_BEGIN_DECLS
#define GST_TYPE_X_WINDOW_LISTENER \
(gst_x_window_listener_get_type())
#define GST_X_WINDOW_LISTENER(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_X_WINDOW_LISTENER, \
GstXWindowListener))
#define GST_X_WINDOW_LISTENER_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_X_WINDOW_LISTENER, \
GstXWindowListenerClass))
#define GST_IS_X_WINDOW_LISTENER(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_X_WINDOW_LISTENER))
#define GST_IS_X_WINDOW_LISTENER_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_X_WINDOW_LISTENER))
typedef struct _GstXWindowListener GstXWindowListener;
typedef struct _GstXWindowListenerClass GstXWindowListenerClass;
typedef struct _GstXWindowClip GstXWindowClip;
typedef void (* MapWindowFunc) (gpointer your_data,
gboolean visible);
typedef void (* SetWindowFunc) (gpointer your_data,
gint x, gint y,
gint w, gint h,
GstXWindowClip *clips,
gint num_clips);
struct _GstXWindowClip {
gint32 x_offset,
y_offset,
width,
height;
gpointer data;
};
struct _GstXWindowListener {
GObject parent;
/* "per-instance virtual functions" */
MapWindowFunc map_window_func;
SetWindowFunc set_window_func;
/* private data with which we call the virtual functions */
gpointer private_data;
/* general information of what we're doing */
gchar *display_name;
XID xwindow_id;
/* one extra... */
Display *main_display;
GMutex *main_lock;
/* oh my g*d, this is going to be so horribly ugly */
GThread *thread;
gboolean cycle;
/* the overlay window + own thread */
Display *display;
Drawable child;
gboolean ov_conf,
ov_map,
ov_visible,
ov_refresh,
ov_move,
ov_wmmap;
gint ov_visibility;
guint ov_conf_id,
ov_refresh_id;
gint x, y, w, h;
GstXWindowClip *clips;
gint num_clips;
};
struct _GstXWindowListenerClass {
GObjectClass parent;
};
GType gst_x_window_listener_get_type (void);
GstXWindowListener *
gst_x_window_listener_new (gchar *display,
MapWindowFunc map_window_func,
SetWindowFunc set_window_func,
gpointer private_data);
void gst_x_window_listener_set_xid (GstXWindowListener *xwin,
XID id);
G_END_DECLS
#endif /* __X_WINDOW_LISTENER_H__ */