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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 12:47:42 +00:00
parent 4506e60ea0
commit 862d28a1b7
14 changed files with 1249 additions and 584 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
configure.ac
View file

@ -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

151
sys/v4l2/gstv4l2colorbalance.c Normal file
View file

@ -0,0 +1,151 @@
/* GStreamer Color Balance interface implementation
* Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
*
* gstv4l2colorbalance.c: color balance interface implementation for V4L2
*
* 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 "gstv4l2colorbalance.h"
#include "gstv4l2element.h"
static void
gst_v4l2_color_balance_channel_class_init(GstV4l2ColorBalanceChannelClass *klass);
static void
gst_v4l2_color_balance_channel_init (GstV4l2ColorBalanceChannel *channel);
static const GList *
gst_v4l2_color_balance_list_channels (GstColorBalance *balance);
static void
gst_v4l2_color_balance_set_value (GstColorBalance *balance,
GstColorBalanceChannel *channel,
gint value);
static gint
gst_v4l2_color_balance_get_value (GstColorBalance *balance,
GstColorBalanceChannel *channel);
static GstColorBalanceChannelClass *parent_class = NULL;
GType
gst_v4l2_color_balance_channel_get_type (void)
{
static GType gst_v4l2_color_balance_channel_type = 0;
if (!gst_v4l2_color_balance_channel_type) {
static const GTypeInfo v4l2_tuner_channel_info = {
sizeof (GstV4l2ColorBalanceChannelClass),
NULL,
NULL,
(GClassInitFunc) gst_v4l2_color_balance_channel_class_init,
NULL,
NULL,
sizeof (GstV4l2ColorBalanceChannel),
0,
(GInstanceInitFunc) gst_v4l2_color_balance_channel_init,
NULL
};
gst_v4l2_color_balance_channel_type =
g_type_register_static (GST_TYPE_COLOR_BALANCE_CHANNEL,
"GstV4l2ColorBalanceChannel",
&v4l2_tuner_channel_info, 0);
}
return gst_v4l2_color_balance_channel_type;
}
static void
gst_v4l2_color_balance_channel_class_init (GstV4l2ColorBalanceChannelClass *klass)
{
parent_class = g_type_class_ref (GST_TYPE_COLOR_BALANCE_CHANNEL);
}
static void
gst_v4l2_color_balance_channel_init (GstV4l2ColorBalanceChannel *channel)
{
channel->index = 0;
}
void
gst_v4l2_color_balance_interface_init (GstColorBalanceClass *klass)
{
/* default virtual functions */
klass->list_channels = gst_v4l2_color_balance_list_channels;
klass->set_value = gst_v4l2_color_balance_set_value;
klass->get_value = gst_v4l2_color_balance_get_value;
}
static gboolean
gst_v4l2_color_balance_contains_channel (GstV4l2Element *v4l2element,
GstV4l2ColorBalanceChannel *v4l2channel)
{
const GList *item;
for (item = v4l2element->colors; item != NULL; item = item->next)
if (item->data == v4l2channel)
return TRUE;
return FALSE;
}
static const GList *
gst_v4l2_color_balance_list_channels (GstColorBalance *balance)
{
return GST_V4L2ELEMENT (balance)->colors;
}
static void
gst_v4l2_color_balance_set_value (GstColorBalance *balance,
GstColorBalanceChannel *channel,
gint value)
{
GstV4l2Element *v4l2element = GST_V4L2ELEMENT (balance);
GstV4l2ColorBalanceChannel *v4l2channel =
GST_V4L2_COLOR_BALANCE_CHANNEL (channel);
/* assert that we're opened and that we're using a known item */
g_return_if_fail (GST_V4L2_IS_OPEN (v4l2element));
g_return_if_fail (gst_v4l2_color_balance_contains_channel (v4l2element,
v4l2channel));
gst_v4l2_set_attribute (v4l2element, v4l2channel->index, value);
}
static gint
gst_v4l2_color_balance_get_value (GstColorBalance *balance,
GstColorBalanceChannel *channel)
{
GstV4l2Element *v4l2element = GST_V4L2ELEMENT (balance);
GstV4l2ColorBalanceChannel *v4l2channel =
GST_V4L2_COLOR_BALANCE_CHANNEL (channel);
gint value;
/* assert that we're opened and that we're using a known item */
g_return_val_if_fail (GST_V4L2_IS_OPEN (v4l2element), 0);
g_return_val_if_fail (gst_v4l2_color_balance_contains_channel (v4l2element,
v4l2channel),
0);
if (!gst_v4l2_get_attribute (v4l2element, v4l2channel->index, &value))
return 0;
return value;
}

58
sys/v4l2/gstv4l2colorbalance.h Normal file
View file

@ -0,0 +1,58 @@
/* G-Streamer generic V4L2 element - Color Balance interface implementation
* Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
*
* gstv4l2colorbalance.h: color balance interface implementation for V4L2
*
* 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_V4L2_COLOR_BALANCE_H__
#define __GST_V4L2_COLOR_BALANCE_H__
#include <gst/gst.h>
#include <gst/colorbalance/colorbalance.h>
#include "v4l2_calls.h"
G_BEGIN_DECLS
#define GST_TYPE_V4L2_COLOR_BALANCE_CHANNEL \
(gst_v4l2_color_balance_channel_get_type ())
#define GST_V4L2_COLOR_BALANCE_CHANNEL(obj) \
(G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_V4L2_COLOR_BALANCE_CHANNEL, \
GstV4l2ColorBalanceChannel))
#define GST_V4L2_COLOR_BALANCE_CHANNEL_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_V4L2_COLOR_BALANCE_CHANNEL, \
GstV4l2ColorBalanceChannelClass))
#define GST_IS_V4L2_COLOR_BALANCE_CHANNEL(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_V4L2_COLOR_BALANCE_CHANNEL))
#define GST_IS_V4L2_COLOR_BALANCE_CHANNEL_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_V4L2_COLOR_BALANCE_CHANNEL))
typedef struct _GstV4l2ColorBalanceChannel {
GstColorBalanceChannel parent;
guint32 index;
} GstV4l2ColorBalanceChannel;
typedef struct _GstV4l2ColorBalanceChannelClass {
GstColorBalanceChannelClass parent;
} GstV4l2ColorBalanceChannelClass;
GType gst_v4l2_color_balance_channel_get_type (void);
void gst_v4l2_color_balance_interface_init (GstColorBalanceClass *klass);
#endif /* __GST_V4L2_COLOR_BALANCE_H__ */

3
sys/v4l2/gstv4l2element-marshal.list
View file

@ -1,3 +0,0 @@
BOOLEAN:INT,INT,INT,INT,POINTER,INT
BOOLEAN:STRING,INT
BOOLEAN:STRING,POINTER

406
sys/v4l2/gstv4l2element.c
View file

@ -22,12 +22,14 @@
#endif
#include "v4l2_calls.h"
#include "gstv4l2element-marshal.h"
#include "gstv4l2tuner.h"
#include "gstv4l2xoverlay.h"
#include "gstv4l2colorbalance.h"
/* elementfactory details */
static GstElementDetails gst_v4l2element_details = {
"Generic video4linux2 Element",
"None/Video",
"Generic/Video",
"LGPL",
"Generic plugin for handling common video4linux2 calls",
VERSION,
@ -40,37 +42,20 @@ enum {
/* FILL ME */
SIGNAL_OPEN,
SIGNAL_CLOSE,
SIGNAL_SET_VIDEOWINDOW,
SIGNAL_GET_ATTRIBUTE,
SIGNAL_SET_ATTRIBUTE,
LAST_SIGNAL
};
enum {
ARG_0,
ARG_CHANNEL,
ARG_CHANNEL_NAMES,
ARG_OUTPUT,
ARG_OUTPUT_NAMES,
ARG_NORM,
ARG_NORM_NAMES,
ARG_HAS_TUNER,
ARG_FREQUENCY,
ARG_SIGNAL_STRENGTH,
ARG_HAS_AUDIO,
ARG_ATTRIBUTES,
ARG_DEVICE,
ARG_DEVICE_NAME,
ARG_DEVICE_HAS_CAPTURE,
ARG_DEVICE_HAS_OVERLAY,
ARG_DEVICE_HAS_PLAYBACK,
ARG_DISPLAY,
ARG_DO_OVERLAY,
ARG_FLAGS
};
static void gst_v4l2element_class_init (GstV4l2ElementClass *klass);
static void gst_v4l2element_init (GstV4l2Element *v4lelement);
static void gst_v4l2element_dispose (GObject *object);
static void gst_v4l2element_set_property (GObject *object,
guint prop_id,
const GValue *value,
@ -79,13 +64,43 @@ static void gst_v4l2element_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static GstElementStateReturn gst_v4l2element_change_state (GstElement *element);
static GstElementStateReturn
gst_v4l2element_change_state (GstElement *element);
static GstElementClass *parent_class = NULL;
static guint gst_v4l2element_signals[LAST_SIGNAL] = { 0 };
static gboolean
gst_v4l2_iface_supported (GstInterface *iface,
GType iface_type)
{
GstV4l2Element *v4l2element = GST_V4L2ELEMENT (iface);
g_assert (iface_type == GST_TYPE_TUNER ||
iface_type == GST_TYPE_X_OVERLAY ||
iface_type == GST_TYPE_COLOR_BALANCE);
if (v4l2element->video_fd == -1)
return FALSE;
if (iface_type == GST_TYPE_X_OVERLAY &&
!GST_V4L2_IS_OVERLAY(v4l2element))
return FALSE;
return TRUE;
}
static void
gst_v4l2_interface_init (GstInterfaceClass *klass)
{
/* default virtual functions */
klass->supported = gst_v4l2_iface_supported;
}
GType
gst_v4l2element_get_type (void)
{
@ -104,13 +119,78 @@ gst_v4l2element_get_type (void)
(GInstanceInitFunc) gst_v4l2element_init,
NULL
};
v4l2element_type = g_type_register_static(GST_TYPE_ELEMENT,
static const GInterfaceInfo v4l2iface_info = {
(GInterfaceInitFunc) gst_v4l2_interface_init,
NULL,
NULL,
};
static const GInterfaceInfo v4l2_tuner_info = {
(GInterfaceInitFunc) gst_v4l2_tuner_interface_init,
NULL,
NULL,
};
static const GInterfaceInfo v4l2_xoverlay_info = {
(GInterfaceInitFunc) gst_v4l2_xoverlay_interface_init,
NULL,
NULL,
};
static const GInterfaceInfo v4l2_colorbalance_info = {
(GInterfaceInitFunc) gst_v4l2_color_balance_interface_init,
NULL,
NULL,
};
v4l2element_type =
g_type_register_static(GST_TYPE_ELEMENT,
"GstV4l2Element", &v4l2element_info, 0);
g_type_add_interface_static (v4l2element_type,
GST_TYPE_INTERFACE,
&v4l2iface_info);
g_type_add_interface_static (v4l2element_type,
GST_TYPE_TUNER,
&v4l2_tuner_info);
g_type_add_interface_static (v4l2element_type,
GST_TYPE_X_OVERLAY,
&v4l2_xoverlay_info);
g_type_add_interface_static (v4l2element_type,
GST_TYPE_COLOR_BALANCE,
&v4l2_colorbalance_info);
}
return v4l2element_type;
}
#define GST_TYPE_V4L2_DEVICE_FLAGS (gst_v4l2_device_get_type ())
GType
gst_v4l2_device_get_type (void)
{
static GType v4l2_device_type = 0;
if (v4l2_device_type == 0) {
static const GFlagsValue values[] = {
{ V4L2_CAP_VIDEO_CAPTURE, "CAPTURE",
"Device can capture" },
{ V4L2_CAP_VIDEO_OUTPUT, "PLAYBACK",
"Device can playback" },
{ V4L2_CAP_VIDEO_OVERLAY, "OVERLAY",
"Device can do overlay" },
{ V4L2_CAP_TUNER, "TUNER",
"Device has a tuner" },
{ V4L2_CAP_AUDIO, "AUDIO",
"Device handles audio" },
{ 0, NULL, NULL }
};
v4l2_device_type =
g_flags_register_static ("GstV4l2DeviceTypeFlags",
values);
}
return v4l2_device_type;
}
static void
gst_v4l2element_class_init (GstV4l2ElementClass *klass)
@ -123,96 +203,15 @@ gst_v4l2element_class_init (GstV4l2ElementClass *klass)
parent_class = g_type_class_ref(GST_TYPE_ELEMENT);
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_CHANNEL,
g_param_spec_int("channel","channel","channel",
G_MININT,G_MAXINT,0,G_PARAM_READWRITE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_CHANNEL_NAMES,
g_param_spec_pointer("channel_names","channel_names","channel_names",
G_PARAM_READABLE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_OUTPUT,
g_param_spec_int("output","output","output",
G_MININT,G_MAXINT,0,G_PARAM_READWRITE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_OUTPUT_NAMES,
g_param_spec_pointer("output_names","output_names","output_names",
G_PARAM_READABLE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_NORM,
g_param_spec_int("norm","norm","norm",
G_MININT,G_MAXINT,0,G_PARAM_READWRITE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_NORM_NAMES,
g_param_spec_pointer("norm_names","norm_names","norm_names",
G_PARAM_READABLE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_HAS_TUNER,
g_param_spec_boolean("has_tuner","has_tuner","has_tuner",
0,G_PARAM_READABLE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_FREQUENCY,
g_param_spec_ulong("frequency","frequency","frequency",
0,G_MAXULONG,0,G_PARAM_READWRITE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_SIGNAL_STRENGTH,
g_param_spec_ulong("signal_strength","signal_strength","signal_strength",
0,G_MAXULONG,0,G_PARAM_READABLE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_HAS_AUDIO,
g_param_spec_boolean("has_audio","has_audio","has_audio",
0,G_PARAM_READABLE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_ATTRIBUTES,
g_param_spec_pointer("attributes","attributes","attributes",
G_PARAM_READABLE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_DEVICE,
g_param_spec_string("device","device","device",
g_param_spec_string("device", "Device", "Device location",
NULL, G_PARAM_READWRITE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_DEVICE_NAME,
g_param_spec_string("device_name","device_name","device_name",
NULL, G_PARAM_READABLE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_DEVICE_HAS_CAPTURE,
g_param_spec_boolean("can_capture","can_capture","can_capture",
0,G_PARAM_READABLE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_DEVICE_HAS_PLAYBACK,
g_param_spec_boolean("can_playback","can_playback","can_playback",
0,G_PARAM_READABLE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_DEVICE_HAS_OVERLAY,
g_param_spec_boolean("has_overlay","has_overlay","has_overlay",
0,G_PARAM_READABLE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_DISPLAY,
g_param_spec_string("display","display","display",
NULL, G_PARAM_WRITABLE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_DO_OVERLAY,
g_param_spec_boolean("do_overlay","do_overlay","do_overlay",
0,G_PARAM_WRITABLE));
/* actions */
gst_v4l2element_signals[SIGNAL_SET_VIDEOWINDOW] =
g_signal_new ("set_videowindow",
G_TYPE_FROM_CLASS(klass),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET(GstV4l2ElementClass, set_videowindow),
NULL, NULL,
gstv4l2_cclosure_marshal_BOOLEAN__INT_INT_INT_INT_POINTER_INT,
G_TYPE_BOOLEAN, 6,
G_TYPE_INT, G_TYPE_INT, G_TYPE_INT, G_TYPE_INT,
G_TYPE_POINTER, G_TYPE_INT);
klass->set_videowindow = gst_v4l2_set_window;
gst_v4l2element_signals[SIGNAL_GET_ATTRIBUTE] =
g_signal_new ("get_attribute",
G_TYPE_FROM_CLASS(klass),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET(GstV4l2ElementClass, get_attribute),
NULL, NULL,
gstv4l2_cclosure_marshal_BOOLEAN__STRING_POINTER,
G_TYPE_BOOLEAN, 2, G_TYPE_STRING, G_TYPE_POINTER);
klass->get_attribute = gst_v4l2_get_attribute;
gst_v4l2element_signals[SIGNAL_SET_ATTRIBUTE] =
g_signal_new ("set_attribute",
G_TYPE_FROM_CLASS(klass),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET(GstV4l2ElementClass, set_attribute),
NULL, NULL,
gstv4l2_cclosure_marshal_BOOLEAN__STRING_INT,
G_TYPE_BOOLEAN, 2, G_TYPE_STRING, G_TYPE_INT);
klass->set_attribute = gst_v4l2_set_attribute;
g_param_spec_string("device_name", "Device name",
"Name of the device", NULL, G_PARAM_READABLE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_FLAGS,
g_param_spec_flags("flags", "Flags", "Device type flags",
GST_TYPE_V4L2_DEVICE_FLAGS, 0, G_PARAM_READABLE));
/* signals */
gst_v4l2element_signals[SIGNAL_OPEN] =
@ -228,6 +227,7 @@ gst_v4l2element_class_init (GstV4l2ElementClass *klass)
gobject_class->set_property = gst_v4l2element_set_property;
gobject_class->get_property = gst_v4l2element_get_property;
gobject_class->dispose = gst_v4l2element_dispose;
gstelement_class->change_state = gst_v4l2element_change_state;
}
@ -239,25 +239,38 @@ gst_v4l2element_init (GstV4l2Element *v4l2element)
/* some default values */
v4l2element->video_fd = -1;
v4l2element->buffer = NULL;
v4l2element->device = NULL;
v4l2element->device = g_strdup("/dev/video");
v4l2element->display = g_strdup(g_getenv("DISPLAY"));
v4l2element->norm = -1;
v4l2element->channel = -1;
v4l2element->output = -1;
v4l2element->frequency = 0;
v4l2element->controls = NULL;
v4l2element->menus = NULL;
v4l2element->control_specs = NULL;
v4l2element->outputs = NULL;
v4l2element->output_names = NULL;
v4l2element->inputs = NULL;
v4l2element->input_names = NULL;
v4l2element->channels = NULL;
v4l2element->norms = NULL;
v4l2element->norm_names = NULL;
v4l2element->colors = NULL;
v4l2element->overlay = gst_v4l2_xoverlay_new(v4l2element);
}
static void
gst_v4l2element_dispose (GObject *object)
{
GstV4l2Element *v4l2element = GST_V4L2ELEMENT(object);
if (v4l2element->overlay) {
gst_v4l2_xoverlay_free(v4l2element);
}
if (v4l2element->display) {
g_free (v4l2element->display);
}
if (v4l2element->device) {
g_free (v4l2element->device);
}
if (((GObjectClass *) parent_class)->dispose)
((GObjectClass *) parent_class)->dispose(object);
}
static void
gst_v4l2element_set_property (GObject *object,
guint prop_id,
@ -271,34 +284,6 @@ gst_v4l2element_set_property (GObject *object,
v4l2element = GST_V4L2ELEMENT(object);
switch (prop_id) {
case ARG_CHANNEL:
v4l2element->channel = g_value_get_int(value);
if (GST_V4L2_IS_OPEN(v4l2element) && !GST_V4L2_IS_ACTIVE(v4l2element)) {
if (!gst_v4l2_set_input(v4l2element, g_value_get_int(value)))
return;
}
break;
case ARG_OUTPUT:
v4l2element->output = g_value_get_int(value);
if (GST_V4L2_IS_OPEN(v4l2element) && !GST_V4L2_IS_ACTIVE(v4l2element)) {
if (!gst_v4l2_set_output(v4l2element, g_value_get_int(value)))
return;
}
break;
case ARG_NORM:
v4l2element->norm = g_value_get_int(value);
if (GST_V4L2_IS_OPEN(v4l2element) && !GST_V4L2_IS_ACTIVE(v4l2element)) {
if (!gst_v4l2_set_norm(v4l2element, g_value_get_int(value)))
return;
}
break;
case ARG_FREQUENCY:
v4l2element->frequency = g_value_get_ulong(value);
if (GST_V4L2_IS_OPEN(v4l2element) && !GST_V4L2_IS_ACTIVE(v4l2element)) {
if (!gst_v4l2_set_frequency(v4l2element, g_value_get_ulong(value)))
return;
}
break;
case ARG_DEVICE:
if (!GST_V4L2_IS_OPEN(v4l2element)) {
if (v4l2element->device)
@ -306,16 +291,6 @@ gst_v4l2element_set_property (GObject *object,
v4l2element->device = g_strdup(g_value_get_string(value));
}
break;
case ARG_DISPLAY:
if (!gst_v4l2_set_display(v4l2element, g_value_get_string(value)))
return;
break;
case ARG_DO_OVERLAY:
if (GST_V4L2_IS_OPEN(v4l2element)) {
if (!gst_v4l2_enable_overlay(v4l2element, g_value_get_boolean(value)))
return;
}
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -330,88 +305,31 @@ gst_v4l2element_get_property (GObject *object,
GParamSpec *pspec)
{
GstV4l2Element *v4l2element;
gint temp_i = 0;
gulong temp_ul = 0;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail(GST_IS_V4L2ELEMENT(object));
v4l2element = GST_V4L2ELEMENT(object);
switch (prop_id) {
case ARG_CHANNEL:
if (GST_V4L2_IS_OPEN(v4l2element))
gst_v4l2_get_input(v4l2element, &temp_i);
g_value_set_int(value, temp_i);
break;
case ARG_CHANNEL_NAMES:
g_value_set_pointer(value, v4l2element->input_names);
break;
case ARG_OUTPUT:
if (GST_V4L2_IS_OPEN(v4l2element))
gst_v4l2_get_output(v4l2element, &temp_i);
g_value_set_int(value, temp_i);
break;
case ARG_OUTPUT_NAMES:
g_value_set_pointer(value, v4l2element->output_names);
break;
case ARG_NORM:
if (GST_V4L2_IS_OPEN(v4l2element))
gst_v4l2_get_norm(v4l2element, &temp_i);
g_value_set_int(value, temp_i);
break;
case ARG_NORM_NAMES:
g_value_set_pointer(value, v4l2element->norm_names);
break;
case ARG_HAS_TUNER:
if (GST_V4L2_IS_OPEN(v4l2element))
g_value_set_boolean(value,
gst_v4l2_has_tuner(v4l2element, &temp_i));
break;
case ARG_FREQUENCY:
if (GST_V4L2_IS_OPEN(v4l2element))
gst_v4l2_get_frequency(v4l2element, &temp_ul);
g_value_set_ulong(value, temp_ul);
break;
case ARG_SIGNAL_STRENGTH:
if (GST_V4L2_IS_OPEN(v4l2element))
gst_v4l2_signal_strength(v4l2element, &temp_ul);
g_value_set_ulong(value, temp_ul);
break;
case ARG_HAS_AUDIO:
if (GST_V4L2_IS_OPEN(v4l2element))
temp_i = gst_v4l2_has_audio(v4l2element);
g_value_set_boolean(value, temp_i>0?TRUE:FALSE);
break;
case ARG_ATTRIBUTES:
g_value_set_pointer(value, v4l2element->control_specs);
break;
case ARG_DEVICE:
g_value_set_string(value, v4l2element->device);
break;
case ARG_DEVICE_NAME:
case ARG_DEVICE_NAME: {
gchar *new = NULL;
if (GST_V4L2_IS_OPEN(v4l2element))
g_value_set_string(value, v4l2element->vcap.card);
new = v4l2element->vcap.card;
g_value_set_string(value, new);
break;
case ARG_DEVICE_HAS_CAPTURE:
if (GST_V4L2_IS_OPEN(v4l2element) &&
v4l2element->vcap.capabilities & V4L2_CAP_VIDEO_CAPTURE &&
v4l2element->vcap.capabilities & V4L2_CAP_STREAMING)
temp_i = 1;
g_value_set_boolean(value, temp_i>0?TRUE:FALSE);
break;
case ARG_DEVICE_HAS_OVERLAY:
if (GST_V4L2_IS_OPEN(v4l2element) &&
v4l2element->vcap.capabilities & V4L2_CAP_VIDEO_OVERLAY)
temp_i = 1;
g_value_set_boolean(value, temp_i>0?TRUE:FALSE);
break;
case ARG_DEVICE_HAS_PLAYBACK:
if (GST_V4L2_IS_OPEN(v4l2element) &&
v4l2element->vcap.capabilities & V4L2_CAP_VIDEO_OUTPUT &&
v4l2element->vcap.capabilities & V4L2_CAP_STREAMING)
temp_i = 1;
g_value_set_boolean(value, temp_i>0?TRUE:FALSE);
}
case ARG_FLAGS: {
guint flags = 0;
if (GST_V4L2_IS_OPEN(v4l2element)) {
flags |= v4l2element->vcap.capabilities &
30007;
}
g_value_set_flags(value, flags);
break;
}
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
break;
@ -433,29 +351,21 @@ gst_v4l2element_change_state (GstElement *element)
*/
switch (GST_STATE_TRANSITION(element)) {
case GST_STATE_NULL_TO_READY:
gst_v4l2_set_display(v4l2element);
if (!gst_v4l2_open(v4l2element))
return GST_STATE_FAILURE;
gst_v4l2_xoverlay_open(v4l2element);
/* emit a signal! whoopie! */
g_signal_emit(G_OBJECT(v4l2element),
gst_v4l2element_signals[SIGNAL_OPEN], 0,
v4l2element->device);
/* now, sync options */
if (v4l2element->norm >= 0)
if (!gst_v4l2_set_norm(v4l2element, v4l2element->norm))
return GST_STATE_FAILURE;
if (v4l2element->channel >= 0)
if (!gst_v4l2_set_input(v4l2element, v4l2element->channel))
return GST_STATE_FAILURE;
if (v4l2element->output >= 0)
if (!gst_v4l2_set_output(v4l2element, v4l2element->output))
return GST_STATE_FAILURE;
if (v4l2element->frequency > 0)
if (!gst_v4l2_set_frequency(v4l2element, v4l2element->frequency))
return GST_STATE_FAILURE;
break;
case GST_STATE_READY_TO_NULL:
gst_v4l2_xoverlay_close(v4l2element);
if (!gst_v4l2_close(v4l2element))
return GST_STATE_FAILURE;
@ -478,6 +388,10 @@ gst_v4l2element_factory_init (GstPlugin *plugin)
{
GstElementFactory *factory;
/* we can run without... But not yet. ;). */
if (!gst_library_load ("xwindowlistener"))
return FALSE;
/* create an elementfactory for the v4l2element */
factory = gst_element_factory_new("v4l2element", GST_TYPE_V4L2ELEMENT,
&gst_v4l2element_details);

33
sys/v4l2/gstv4l2element.h
View file

@ -21,6 +21,7 @@
#define __GST_V4L2ELEMENT_H__
#include <gst/gst.h>
#include <gst/xwindowlistener/xwindowlistener.h>
/* Because of some really cool feature in video4linux1, also known as
* 'not including sys/types.h and sys/time.h', we had to include it
@ -71,17 +72,16 @@ struct _GstV4l2Element {
struct v4l2_capability vcap;
/* the toys available to us */
GList /*v4l2_input*/ *inputs, *input_names;
GList /*v4l2_output*/ *outputs, *output_names;
GList /*v4l2_enumstd*/ *norms, *norm_names;
GList /*v4l2_queryctrl*/ *controls, *control_specs;
GList /*GList:v4l2_querymenu*/ *menus;
GList *channels;
GList *norms;
GList *colors;
/* X-overlay */
GstXWindowListener *overlay;
XID xwindow_id;
/* caching values */
gint channel;
gint output;
gint norm;
gulong frequency;
gchar *display;
};
struct _GstV4l2ElementClass {
@ -92,21 +92,6 @@ struct _GstV4l2ElementClass {
const gchar *device);
void (*close) (GstElement *element,
const gchar *device);
/* actions */
gboolean (*set_videowindow) (GstElement *element,
gint x_offset,
gint y_offset,
gint height,
gint width,
struct v4l2_clip *clips,
gint num_clips);
gboolean (*get_attribute) (GstElement *element,
const gchar *attr_name,
int *value);
gboolean (*set_attribute) (GstElement *element,
const gchar *attr_name,
const int value);
};

17
sys/v4l2/gstv4l2src.c
View file

@ -24,6 +24,7 @@
#include <string.h>
#include <sys/time.h>
#include "v4l2src_calls.h"
#include "gstv4l2tuner.h"
/* elementfactory details */
static GstElementDetails gst_v4l2src_details = {
@ -247,9 +248,8 @@ gst_v4l2src_close (GstElement *element,
static gfloat
gst_v4l2src_get_fps (GstV4l2Src *v4l2src)
{
gint norm;
struct v4l2_standard *std;
gfloat fps;
v4l2_std_id norm;
const GList *item;
if (!v4l2src->use_fixed_fps &&
v4l2src->clock != NULL &&
@ -267,11 +267,14 @@ gst_v4l2src_get_fps (GstV4l2Src *v4l2src)
if (!gst_v4l2_get_norm(GST_V4L2ELEMENT(v4l2src), &norm))
return 0.;
for (item = GST_V4L2ELEMENT(v4l2src)->norms;
item != NULL; item = item->next) {
GstV4l2TunerNorm *v4l2norm = item->data;
if (v4l2norm->index == norm)
return GST_TUNER_NORM(v4l2norm)->fps;
}
std = ((struct v4l2_standard *) g_list_nth_data(GST_V4L2ELEMENT(v4l2src)->norms, norm));
fps = (1. * std->frameperiod.denominator) / std->frameperiod.numerator;
return fps;
return 0.;
}

361
sys/v4l2/gstv4l2tuner.c Normal file
View file

@ -0,0 +1,361 @@
/* GStreamer Tuner interface implementation
* Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
*
* gstv4l2tuner.c: tuner interface implementation for V4L2
*
* 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 <gst/tuner/tuner.h>
#include "gstv4l2tuner.h"
#include "gstv4l2element.h"
#include "v4l2_calls.h"
static void gst_v4l2_tuner_channel_class_init (GstV4l2TunerChannelClass *klass);
static void gst_v4l2_tuner_channel_init (GstV4l2TunerChannel *channel);
static void gst_v4l2_tuner_norm_class_init (GstV4l2TunerNormClass *klass);
static void gst_v4l2_tuner_norm_init (GstV4l2TunerNorm *norm);
static const GList *
gst_v4l2_tuner_list_channels (GstTuner *mixer);
static void gst_v4l2_tuner_set_channel (GstTuner *mixer,
GstTunerChannel *channel);
static const GstTunerChannel *
gst_v4l2_tuner_get_channel (GstTuner *mixer);
static const GList *
gst_v4l2_tuner_list_norms (GstTuner *mixer);
static void gst_v4l2_tuner_set_norm (GstTuner *mixer,
GstTunerNorm *norm);
static const GstTunerNorm *
gst_v4l2_tuner_get_norm (GstTuner *mixer);
static void gst_v4l2_tuner_set_frequency (GstTuner *mixer,
GstTunerChannel *channel,
gulong frequency);
static gulong gst_v4l2_tuner_get_frequency (GstTuner *mixer,
GstTunerChannel *channel);
static gint gst_v4l2_tuner_signal_strength (GstTuner *mixer,
GstTunerChannel *channel);
static GstTunerNormClass *norm_parent_class = NULL;
static GstTunerChannelClass *channel_parent_class = NULL;
GType
gst_v4l2_tuner_channel_get_type (void)
{
static GType gst_v4l2_tuner_channel_type = 0;
if (!gst_v4l2_tuner_channel_type) {
static const GTypeInfo v4l2_tuner_channel_info = {
sizeof (GstV4l2TunerChannelClass),
NULL,
NULL,
(GClassInitFunc) gst_v4l2_tuner_channel_class_init,
NULL,
NULL,
sizeof (GstV4l2TunerChannel),
0,
(GInstanceInitFunc) gst_v4l2_tuner_channel_init,
NULL
};
gst_v4l2_tuner_channel_type =
g_type_register_static (GST_TYPE_TUNER_CHANNEL,
"GstV4l2TunerChannel",
&v4l2_tuner_channel_info, 0);
}
return gst_v4l2_tuner_channel_type;
}
static void
gst_v4l2_tuner_channel_class_init (GstV4l2TunerChannelClass *klass)
{
channel_parent_class = g_type_class_ref (GST_TYPE_TUNER_CHANNEL);
}
static void
gst_v4l2_tuner_channel_init (GstV4l2TunerChannel *channel)
{
channel->index = 0;
channel->tuner = 0;
channel->audio = 0;
}
GType
gst_v4l2_tuner_norm_get_type (void)
{
static GType gst_v4l2_tuner_norm_type = 0;
if (!gst_v4l2_tuner_norm_type) {
static const GTypeInfo v4l2_tuner_norm_info = {
sizeof (GstV4l2TunerNormClass),
NULL,
NULL,
(GClassInitFunc) gst_v4l2_tuner_norm_class_init,
NULL,
NULL,
sizeof (GstV4l2TunerNorm),
0,
(GInstanceInitFunc) gst_v4l2_tuner_norm_init,
NULL
};
gst_v4l2_tuner_norm_type =
g_type_register_static (GST_TYPE_TUNER_NORM,
"GstV4l2TunerNorm",
&v4l2_tuner_norm_info, 0);
}
return gst_v4l2_tuner_norm_type;
}
static void
gst_v4l2_tuner_norm_class_init (GstV4l2TunerNormClass *klass)
{
norm_parent_class = g_type_class_ref (GST_TYPE_TUNER_NORM);
}
static void
gst_v4l2_tuner_norm_init (GstV4l2TunerNorm *norm)
{
norm->index = 0;
}
void
gst_v4l2_tuner_interface_init (GstTunerClass *klass)
{
/* default virtual functions */
klass->list_channels = gst_v4l2_tuner_list_channels;
klass->set_channel = gst_v4l2_tuner_set_channel;
klass->get_channel = gst_v4l2_tuner_get_channel;
klass->list_norms = gst_v4l2_tuner_list_norms;
klass->set_norm = gst_v4l2_tuner_set_norm;
klass->get_norm = gst_v4l2_tuner_get_norm;
klass->set_frequency = gst_v4l2_tuner_set_frequency;
klass->get_frequency = gst_v4l2_tuner_get_frequency;
klass->signal_strength = gst_v4l2_tuner_signal_strength;
}
static gboolean
gst_v4l2_tuner_is_sink (GstV4l2Element *v4l2element)
{
const GList *pads = gst_element_get_pad_list (GST_ELEMENT (v4l2element));
GstPadDirection dir = GST_PAD_UNKNOWN;
/* get direction */
if (pads && g_list_length ((GList *) pads) == 1)
dir = GST_PAD_DIRECTION (GST_PAD (pads->data));
return (dir == GST_PAD_SINK);
}
static gboolean
gst_v4l2_tuner_contains_channel (GstV4l2Element *v4l2element,
GstV4l2TunerChannel *v4l2channel)
{
const GList *item;
for (item = v4l2element->channels; item != NULL; item = item->next)
if (item->data == v4l2channel)
return TRUE;
return FALSE;
}
static const GList *
gst_v4l2_tuner_list_channels (GstTuner *mixer)
{
/* ... or output, if we're a sink... */
return GST_V4L2ELEMENT (mixer)->channels;
}
static void
gst_v4l2_tuner_set_channel (GstTuner *mixer,
GstTunerChannel *channel)
{
GstV4l2Element *v4l2element = GST_V4L2ELEMENT (mixer);
GstV4l2TunerChannel *v4l2channel = GST_V4L2_TUNER_CHANNEL (channel);
/* assert that we're opened and that we're using a known item */
g_return_if_fail (GST_V4L2_IS_OPEN (v4l2element));
g_return_if_fail (gst_v4l2_tuner_contains_channel (v4l2element, v4l2channel));
/* ... or output, if we're a sink... */
if (gst_v4l2_tuner_is_sink (v4l2element))
gst_v4l2_set_output (v4l2element, v4l2channel->index);
else
gst_v4l2_set_input (v4l2element, v4l2channel->index);
}
static const GstTunerChannel *
gst_v4l2_tuner_get_channel (GstTuner *mixer)
{
GstV4l2Element *v4l2element = GST_V4L2ELEMENT (mixer);
GList *item;
gint channel;
/* assert that we're opened and that we're using a known item */
g_return_val_if_fail (GST_V4L2_IS_OPEN (v4l2element), NULL);
/* ... or output, if we're a sink... */
if (gst_v4l2_tuner_is_sink (v4l2element))
gst_v4l2_get_output (v4l2element, &channel);
else
gst_v4l2_get_input (v4l2element, &channel);
for (item = v4l2element->channels; item != NULL; item = item->next) {
if (channel == GST_V4L2_TUNER_CHANNEL (item->data)->index)
return (const GstTunerChannel *) item->data;
}
return NULL;
}
static gboolean
gst_v4l2_tuner_contains_norm (GstV4l2Element *v4l2element,
GstV4l2TunerNorm *v4l2norm)
{
const GList *item;
for (item = v4l2element->norms; item != NULL; item = item->next)
if (item->data == v4l2norm)
return TRUE;
return FALSE;
}
static const GList *
gst_v4l2_tuner_list_norms (GstTuner *mixer)
{
return GST_V4L2ELEMENT (mixer)->norms;
}
static void
gst_v4l2_tuner_set_norm (GstTuner *mixer,
GstTunerNorm *norm)
{
GstV4l2Element *v4l2element = GST_V4L2ELEMENT (mixer);
GstV4l2TunerNorm *v4l2norm = GST_V4L2_TUNER_NORM (norm);
/* assert that we're opened and that we're using a known item */
g_return_if_fail (GST_V4L2_IS_OPEN (v4l2element));
g_return_if_fail (gst_v4l2_tuner_contains_norm (v4l2element, v4l2norm));
gst_v4l2_set_norm (v4l2element, v4l2norm->index);
}
static const GstTunerNorm *
gst_v4l2_tuner_get_norm (GstTuner *mixer)
{
GstV4l2Element *v4l2element = GST_V4L2ELEMENT (mixer);
GList *item;
v4l2_std_id norm;
/* assert that we're opened and that we're using a known item */
g_return_val_if_fail (GST_V4L2_IS_OPEN (v4l2element), NULL);
gst_v4l2_get_norm (v4l2element, &norm);
for (item = v4l2element->norms; item != NULL; item = item->next) {
if (norm == GST_V4L2_TUNER_NORM (item->data)->index)
return (const GstTunerNorm *) item->data;
}
return NULL;
}
static void
gst_v4l2_tuner_set_frequency (GstTuner *mixer,
GstTunerChannel *channel,
gulong frequency)
{
GstV4l2Element *v4l2element = GST_V4L2ELEMENT (mixer);
GstV4l2TunerChannel *v4l2channel = GST_V4L2_TUNER_CHANNEL (channel);
gint chan;
/* assert that we're opened and that we're using a known item */
g_return_if_fail (GST_V4L2_IS_OPEN (v4l2element));
g_return_if_fail (GST_TUNER_CHANNEL_HAS_FLAG (channel,
GST_TUNER_CHANNEL_FREQUENCY));
g_return_if_fail (gst_v4l2_tuner_contains_channel (v4l2element, v4l2channel));
gst_v4l2_get_input (v4l2element, &chan);
if (chan == GST_V4L2_TUNER_CHANNEL (channel)->index &&
GST_TUNER_CHANNEL_HAS_FLAG (channel, GST_TUNER_CHANNEL_FREQUENCY)) {
gst_v4l2_set_frequency (v4l2element, v4l2channel->tuner, frequency);
}
}
static gulong
gst_v4l2_tuner_get_frequency (GstTuner *mixer,
GstTunerChannel *channel)
{
GstV4l2Element *v4l2element = GST_V4L2ELEMENT (mixer);
GstV4l2TunerChannel *v4l2channel = GST_V4L2_TUNER_CHANNEL (channel);
gint chan;
gulong frequency = 0;
/* assert that we're opened and that we're using a known item */
g_return_val_if_fail (GST_V4L2_IS_OPEN (v4l2element), 0);
g_return_val_if_fail (GST_TUNER_CHANNEL_HAS_FLAG (channel,
GST_TUNER_CHANNEL_FREQUENCY), 0);
g_return_val_if_fail (gst_v4l2_tuner_contains_channel (v4l2element,
v4l2channel), 0);
gst_v4l2_get_input (v4l2element, &chan);
if (chan == GST_V4L2_TUNER_CHANNEL (channel)->index &&
GST_TUNER_CHANNEL_HAS_FLAG (channel, GST_TUNER_CHANNEL_FREQUENCY)) {
gst_v4l2_get_frequency (v4l2element, v4l2channel->tuner, &frequency);
}
return frequency;
}
static gint
gst_v4l2_tuner_signal_strength (GstTuner *mixer,
GstTunerChannel *channel)
{
GstV4l2Element *v4l2element = GST_V4L2ELEMENT (mixer);
GstV4l2TunerChannel *v4l2channel = GST_V4L2_TUNER_CHANNEL (channel);
gint chan;
gulong signal = 0;
/* assert that we're opened and that we're using a known item */
g_return_val_if_fail (GST_V4L2_IS_OPEN (v4l2element), 0);
g_return_val_if_fail (GST_TUNER_CHANNEL_HAS_FLAG (channel,
GST_TUNER_CHANNEL_FREQUENCY), 0);
g_return_val_if_fail (gst_v4l2_tuner_contains_channel (v4l2element,
v4l2channel), 0);
gst_v4l2_get_input (v4l2element, &chan);
if (chan == GST_V4L2_TUNER_CHANNEL (channel)->index &&
GST_TUNER_CHANNEL_HAS_FLAG (channel, GST_TUNER_CHANNEL_FREQUENCY)) {
gst_v4l2_signal_strength (v4l2element, v4l2channel->tuner, &signal);
}
return signal;
}

85
sys/v4l2/gstv4l2tuner.h Normal file
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@ -0,0 +1,85 @@
/* G-Streamer generic V4L2 element - Tuner interface implementation
* Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
*
* gstv4l2tuner.h: tuner interface implementation for V4L2
*
* 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_V4L2_TUNER_H__
#define __GST_V4L2_TUNER_H__
#include <gst/gst.h>
#include <gst/tuner/tuner.h>
#include "gstv4l2element.h"
G_BEGIN_DECLS
#define GST_TYPE_V4L2_TUNER_CHANNEL \
(gst_v4l2_tuner_channel_get_type ())
#define GST_V4L2_TUNER_CHANNEL(obj) \
(G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_V4L2_TUNER_CHANNEL, \
GstV4l2TunerChannel))
#define GST_V4L2_TUNER_CHANNEL_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_V4L2_TUNER_CHANNEL, \
GstV4l2TunerChannelClass))
#define GST_IS_V4L2_TUNER_CHANNEL(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_V4L2_TUNER_CHANNEL))
#define GST_IS_V4L2_TUNER_CHANNEL_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_V4L2_TUNER_CHANNEL))
typedef struct _GstV4l2TunerChannel {
GstTunerChannel parent;
guint32 index;
guint32 tuner;
guint32 audio;
} GstV4l2TunerChannel;
typedef struct _GstV4l2TunerChannelClass {
GstTunerChannelClass parent;
} GstV4l2TunerChannelClass;
#define GST_TYPE_V4L2_TUNER_NORM \
(gst_v4l2_tuner_norm_get_type ())
#define GST_V4L2_TUNER_NORM(obj) \
(G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_V4L2_TUNER_NORM, \
GstV4l2TunerNorm))
#define GST_V4L2_TUNER_NORM_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_V4L2_TUNER_NORM, \
GstV4l2TunerNormClass))
#define GST_IS_V4L2_TUNER_NORM(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_V4L2_TUNER_NORM))
#define GST_IS_V4L2_TUNER_NORM_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_V4L2_TUNER_NORM))
typedef struct _GstV4l2TunerNorm {
GstTunerNorm parent;
v4l2_std_id index;
} GstV4l2TunerNorm;
typedef struct _GstV4l2TunerNormClass {
GstTunerNormClass parent;
} GstV4l2TunerNormClass;
GType gst_v4l2_tuner_channel_get_type (void);
GType gst_v4l2_tuner_norm_get_type (void);
void gst_v4l2_tuner_interface_init (GstTunerClass *klass);
#endif /* __GST_V4L2_TUNER_H__ */

128
sys/v4l2/gstv4l2xoverlay.c Normal file
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@ -0,0 +1,128 @@
/* GStreamer X-based overlay interface implementation
* Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
*
* gstv4l2xoverlay.c: X-based overlay interface implementation for V4L2
*
* 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 <gst/xoverlay/xoverlay.h>
#include <gst/xwindowlistener/xwindowlistener.h>
#include "gstv4l2xoverlay.h"
#include "gstv4l2element.h"
#include "v4l2_calls.h"
static void gst_v4l2_xoverlay_set_xwindow_id (GstXOverlay *overlay,
XID xwindow_id);
void
gst_v4l2_xoverlay_interface_init (GstXOverlayClass *klass)
{
/* default virtual functions */
klass->set_xwindow_id = gst_v4l2_xoverlay_set_xwindow_id;
}
GstXWindowListener *
gst_v4l2_xoverlay_new (GstV4l2Element *v4l2element)
{
GstXWindowListener *xwin =
gst_x_window_listener_new (NULL,
(MapWindowFunc) gst_v4l2_enable_overlay,
(SetWindowFunc) gst_v4l2_set_window,
(gpointer) v4l2element);
v4l2element->overlay = xwin;
v4l2element->xwindow_id = 0;
return xwin;
}
void
gst_v4l2_xoverlay_free (GstV4l2Element *v4l2element)
{
gst_v4l2_xoverlay_close (v4l2element);
g_object_unref (G_OBJECT (v4l2element->overlay));
v4l2element->overlay = NULL;
}
void
gst_v4l2_xoverlay_open (GstV4l2Element *v4l2element)
{
GstXWindowListener *xwin = v4l2element->overlay;
if (xwin) {
xwin->display_name = g_strdup (v4l2element->display);
if (v4l2element->xwindow_id != 0 &&
xwin->display_name &&
xwin->display_name[0] == ':') {
gst_x_window_listener_set_xid (xwin, v4l2element->xwindow_id);
}
}
}
void
gst_v4l2_xoverlay_close (GstV4l2Element *v4l2element)
{
GstXWindowListener *xwin = v4l2element->overlay;
if (xwin != NULL) {
if (v4l2element->xwindow_id != 0 &&
xwin->display_name &&
xwin->display_name[0] == ':') {
gst_x_window_listener_set_xid (xwin, 0);
}
g_free (xwin->display_name);
xwin->display_name = NULL;
}
}
static void
gst_v4l2_xoverlay_set_xwindow_id (GstXOverlay *overlay,
XID xwindow_id)
{
GstV4l2Element *v4l2element = GST_V4L2ELEMENT (overlay);
GstXWindowListener *xwin = v4l2element->overlay;
if (v4l2element->xwindow_id == xwindow_id) {
return;
}
if (gst_element_get_state (GST_ELEMENT (v4l2element)) != GST_STATE_NULL &&
v4l2element->xwindow_id != 0 &&
xwin != NULL &&
xwin->display_name &&
xwin->display_name[0] == ':') {
gst_x_window_listener_set_xid (xwin, 0);
}
v4l2element->xwindow_id = xwindow_id;
if (gst_element_get_state (GST_ELEMENT (v4l2element)) != GST_STATE_NULL &&
v4l2element->xwindow_id != 0 &&
xwin != NULL &&
xwin->display_name &&
xwin->display_name[0] == ':') {
gst_x_window_listener_set_xid (xwin, v4l2element->xwindow_id);
}
}

42
sys/v4l2/gstv4l2xoverlay.h Normal file
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@ -0,0 +1,42 @@
/* G-Streamer generic V4L2 element - X overlay interface implementation
* Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
*
* gstv4l2xoverlay.h: tv mixer interface implementation for V4L2
*
* 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_V4L2_X_OVERLAY_H__
#define __GST_V4L2_X_OVERLAY_H__
#include <gst/gst.h>
#include <gst/xoverlay/xoverlay.h>
#include "gstv4l2element.h"
G_BEGIN_DECLS
void gst_v4l2_xoverlay_interface_init (GstXOverlayClass *klass);
GstXWindowListener *
gst_v4l2_xoverlay_new (GstV4l2Element *v4l2element);
void gst_v4l2_xoverlay_free (GstV4l2Element *v4l2element);
/* signal handlers */
void gst_v4l2_xoverlay_open (GstV4l2Element *v4l2element);
void gst_v4l2_xoverlay_close (GstV4l2Element *v4l2element);
#endif /* __GST_V4L2_X_OVERLAY_H__ */

17
sys/v4l2/v4l2-overlay_calls.c
View file

@ -43,28 +43,33 @@
******************************************************/
gboolean
gst_v4l2_set_display (GstV4l2Element *v4l2element,
const gchar *display)
gst_v4l2_set_display (GstV4l2Element *v4l2element)
{
gchar *buff;
DEBUG("trying to set overlay to '%s'", display);
if (v4l2element->display)
g_free(v4l2element->display);
v4l2element->display = g_strdup(g_getenv("DISPLAY"));
DEBUG("trying to set overlay to '%s'", v4l2element->display);
/* start v4l-conf */
buff = g_strdup_printf("v4l-conf -q -c %s -d %s",
v4l2element->device?v4l2element->device:"/dev/video", display);
v4l2element->device, v4l2element->display);
switch (system(buff)) {
case -1:
gst_element_error(GST_ELEMENT(v4l2element),
"Could not start v4l-conf: %s", g_strerror(errno));
"Could not start v4l-conf: %s",
g_strerror(errno));
g_free(buff);
return FALSE;
case 0:
break;
default:
gst_element_error(GST_ELEMENT(v4l2element),
"v4l-conf failed to run correctly: %s", g_strerror(errno));
"v4l-conf failed to run correctly: %s",
g_strerror(errno));
g_free(buff);
return FALSE;
}

433
sys/v4l2/v4l2_calls.c
View file

@ -30,6 +30,9 @@
#include <errno.h>
#include <unistd.h>
#include "v4l2_calls.h"
#include "gstv4l2tuner.h"
#include "gstv4l2xoverlay.h"
#include "gstv4l2colorbalance.h"
#define DEBUG(format, args...) \
GST_DEBUG_OBJECT (\
@ -70,55 +73,126 @@ static gboolean
gst_v4l2_fill_lists (GstV4l2Element *v4l2element)
{
gint n;
const GList *pads =
gst_element_get_pad_list (GST_ELEMENT (v4l2element));
GstPadDirection dir = GST_PAD_UNKNOWN;
DEBUG("getting enumerations");
GST_V4L2_CHECK_OPEN(v4l2element);
/* sinks have outputs, all others have inputs */
if (pads && g_list_length ((GList *) pads) == 1)
dir = GST_PAD_DIRECTION (GST_PAD (pads->data));
if (dir == GST_PAD_SINK) {
/* and now, the inputs */
for (n=0;;n++) {
struct v4l2_input input, *inpptr;
struct v4l2_input input;
GstV4l2TunerChannel *v4l2channel;
GstTunerChannel *channel;
input.index = n;
if (ioctl(v4l2element->video_fd, VIDIOC_ENUMINPUT, &input) < 0) {
if (ioctl(v4l2element->video_fd, VIDIOC_ENUMINPUT,
&input) < 0) {
if (errno == EINVAL)
break; /* end of enumeration */
else {
gst_element_error(GST_ELEMENT(v4l2element),
"Failed to get no. %d in input enumeration for %s: %s",
n, v4l2element->device, g_strerror(errno));
n, v4l2element->device,
g_strerror(errno));
return FALSE;
}
}
inpptr = g_malloc(sizeof(input));
memcpy(inpptr, &input, sizeof(input));
v4l2element->inputs = g_list_append(v4l2element->inputs, inpptr);
v4l2element->input_names = g_list_append(v4l2element->input_names, inpptr->name);
v4l2channel =
g_object_new(GST_TYPE_V4L2_TUNER_CHANNEL, NULL);
channel = GST_TUNER_CHANNEL(v4l2channel);
channel->label = g_strdup(input.name);
channel->flags = GST_TUNER_CHANNEL_INPUT;
v4l2channel->index = n;
if (input.type == V4L2_INPUT_TYPE_TUNER) {
struct v4l2_tuner vtun;
v4l2channel->tuner = input.tuner;
channel->flags |= GST_TUNER_CHANNEL_FREQUENCY;
vtun.index = input.tuner;
if (ioctl(v4l2element->video_fd, VIDIOC_G_TUNER,
&vtun) < 0) {
gst_element_error(GST_ELEMENT(v4l2element),
"Failed to get tuner %d settings on %s: %s",
input.tuner,
v4l2element->device,
g_strerror(errno));
g_object_unref(G_OBJECT(channel));
return FALSE;
}
channel->min_frequency = vtun.rangelow;
channel->max_frequency = vtun.rangehigh;
channel->min_signal = 0;
channel->max_signal = 0xffff;
}
if (input.audioset) {
/* we take the first. We don't care for
* the others for now */
while (!(input.audioset &
(1<<v4l2channel->audio)))
v4l2channel->audio++;
channel->flags |= GST_TUNER_CHANNEL_AUDIO;
}
v4l2element->channels =
g_list_append(v4l2element->channels,
(gpointer) channel);
}
} else {
/* outputs */
for (n=0;;n++) {
struct v4l2_output output, *outptr;
struct v4l2_output output;
GstV4l2TunerChannel *v4l2channel;
GstTunerChannel *channel;
output.index = n;
if (ioctl(v4l2element->video_fd, VIDIOC_ENUMOUTPUT, &output) < 0) {
if (ioctl(v4l2element->video_fd, VIDIOC_ENUMOUTPUT,
&output) < 0) {
if (errno == EINVAL)
break; /* end of enumeration */
else {
gst_element_error(GST_ELEMENT(v4l2element),
"Failed to get no. %d in output enumeration for %s: %s",
n, v4l2element->device, g_strerror(errno));
n, v4l2element->device,
g_strerror(errno));
return FALSE;
}
}
outptr = g_malloc(sizeof(output));
memcpy(outptr, &output, sizeof(output));
v4l2element->outputs = g_list_append(v4l2element->outputs, outptr);
v4l2element->output_names = g_list_append(v4l2element->output_names, outptr->name);
v4l2channel = g_object_new(GST_TYPE_V4L2_TUNER_CHANNEL, NULL);
channel = GST_TUNER_CHANNEL(v4l2channel);
channel->label = g_strdup(output.name);
channel->flags = GST_TUNER_CHANNEL_OUTPUT;
v4l2channel->index = n;
if (output.audioset) {
/* we take the first. We don't care for
* the others for now */
while (!(output.audioset &
(1<<v4l2channel->audio)))
v4l2channel->audio++;
channel->flags |= GST_TUNER_CHANNEL_AUDIO;
}
v4l2element->channels =
g_list_append(v4l2element->channels,
(gpointer) channel);
}
}
/* norms... */
for (n=0;;n++) {
struct v4l2_standard standard, *stdptr;
struct v4l2_standard standard;
GstV4l2TunerNorm *v4l2norm;
GstTunerNorm *norm;
standard.index = n;
if (ioctl(v4l2element->video_fd, VIDIOC_ENUMSTD, &standard) < 0) {
if (errno == EINVAL)
@ -130,21 +204,28 @@ gst_v4l2_fill_lists (GstV4l2Element *v4l2element)
return FALSE;
}
}
stdptr = g_malloc(sizeof(standard));
memcpy(stdptr, &standard, sizeof(standard));
v4l2element->norms = g_list_append(v4l2element->norms, stdptr);
v4l2element->norm_names = g_list_append(v4l2element->norm_names, stdptr->name);
v4l2norm = g_object_new(GST_TYPE_V4L2_TUNER_NORM, NULL);
norm = GST_TUNER_NORM (v4l2norm);
norm->label = g_strdup(standard.name);
norm->fps = (gfloat) standard.frameperiod.denominator /
standard.frameperiod.numerator;
v4l2norm->index = standard.id;
v4l2element->norms = g_list_append(v4l2element->norms,
(gpointer) norm);
}
/* and lastly, controls+menus (if appropriate) */
for (n=V4L2_CID_BASE;;n++) {
struct v4l2_queryctrl control, *ctrlptr;
GList *menus = NULL;
GParamSpec *spec = NULL;
struct v4l2_queryctrl control;
GstV4l2ColorBalanceChannel *v4l2channel;
GstColorBalanceChannel *channel;
/* hacky... */
if (n == V4L2_CID_LASTP1)
n = V4L2_CID_PRIVATE_BASE;
control.id = n;
if (ioctl(v4l2element->video_fd, VIDIOC_QUERYCTRL, &control) < 0) {
if (errno == EINVAL) {
@ -161,9 +242,39 @@ gst_v4l2_fill_lists (GstV4l2Element *v4l2element)
}
if (control.flags & V4L2_CTRL_FLAG_DISABLED)
continue;
ctrlptr = g_malloc(sizeof(control));
memcpy(ctrlptr, &control, sizeof(control));
v4l2element->controls = g_list_append(v4l2element->controls, ctrlptr);
switch (n) {
case V4L2_CID_BRIGHTNESS:
case V4L2_CID_CONTRAST:
case V4L2_CID_SATURATION:
case V4L2_CID_HUE:
case V4L2_CID_BLACK_LEVEL:
case V4L2_CID_AUTO_WHITE_BALANCE:
case V4L2_CID_DO_WHITE_BALANCE:
case V4L2_CID_RED_BALANCE:
case V4L2_CID_BLUE_BALANCE:
case V4L2_CID_GAMMA:
case V4L2_CID_EXPOSURE:
case V4L2_CID_AUTOGAIN:
case V4L2_CID_GAIN:
/* we only handle these for now */
break;
default:
DEBUG("ControlID %s (%d) unhandled, FIXME",
control.name, n);
control.id++;
break;
}
if (n != control.id)
continue;
v4l2channel = g_object_new(GST_TYPE_V4L2_COLOR_BALANCE_CHANNEL,
NULL);
channel = GST_COLOR_BALANCE_CHANNEL(v4l2channel);
channel->label = g_strdup(control.name);
v4l2channel->index = n;
#if 0
if (control.type == V4L2_CTRL_TYPE_MENU) {
struct v4l2_querymenu menu, *mptr;
int i;
@ -186,30 +297,25 @@ gst_v4l2_fill_lists (GstV4l2Element *v4l2element)
}
}
v4l2element->menus = g_list_append(v4l2element->menus, menus);
#endif
switch (control.type) {
case V4L2_CTRL_TYPE_INTEGER:
spec = g_param_spec_int(ctrlptr->name, ctrlptr->name,
ctrlptr->name, ctrlptr->minimum, ctrlptr->maximum,
ctrlptr->default_value, G_PARAM_READWRITE);
channel->min_value = control.minimum;
channel->max_value = control.maximum;
break;
case V4L2_CTRL_TYPE_BOOLEAN:
spec = g_param_spec_boolean(ctrlptr->name, ctrlptr->name,
ctrlptr->name, ctrlptr->default_value,
G_PARAM_READWRITE);
channel->min_value = FALSE;
channel->max_value = TRUE;
break;
case V4L2_CTRL_TYPE_MENU:
/* hacky... we abuse pointer for 'no value' */
spec = g_param_spec_pointer(ctrlptr->name, ctrlptr->name,
ctrlptr->name, G_PARAM_WRITABLE);
break;
case V4L2_CTRL_TYPE_BUTTON:
/* help?!? */
spec = NULL;
default:
channel->min_value =
channel->max_value = 0;
break;
}
v4l2element->control_specs = g_list_append(v4l2element->control_specs, spec);
v4l2element->colors = g_list_append(v4l2element->colors,
(gpointer) channel);
}
return TRUE;
@ -221,48 +327,17 @@ gst_v4l2_empty_lists (GstV4l2Element *v4l2element)
{
DEBUG("deleting enumerations");
/* empty lists */
while (g_list_length(v4l2element->inputs) > 0) {
gpointer data = g_list_nth_data(v4l2element->inputs, 0);
v4l2element->inputs = g_list_remove(v4l2element->inputs, data);
g_free(data);
}
g_list_free(v4l2element->input_names);
v4l2element->input_names = NULL;
while (g_list_length(v4l2element->outputs) > 0) {
gpointer data = g_list_nth_data(v4l2element->outputs, 0);
v4l2element->outputs = g_list_remove(v4l2element->outputs, data);
g_free(data);
}
g_list_free(v4l2element->output_names);
v4l2element->output_names = NULL;
while (g_list_length(v4l2element->norms) > 0) {
gpointer data = g_list_nth_data(v4l2element->norms, 0);
v4l2element->norms = g_list_remove(v4l2element->norms, data);
g_free(data);
}
g_list_free(v4l2element->norm_names);
v4l2element->norm_names = NULL;
while (g_list_length(v4l2element->controls) > 0) {
gpointer data = g_list_nth_data(v4l2element->controls, 0);
v4l2element->controls = g_list_remove(v4l2element->controls, data);
g_free(data);
}
v4l2element->menus = g_list_remove_all(v4l2element->menus, NULL);
while (g_list_length(v4l2element->menus) > 0) {
GList *items = (GList *) g_list_nth_data(v4l2element->menus, 0);
v4l2element->inputs = g_list_remove(v4l2element->inputs, items);
while (g_list_length(items) > 0) {
gpointer data = g_list_nth_data(v4l2element->menus, 0);
items = g_list_remove(items, data);
g_free(data);
}
}
while (g_list_length(v4l2element->control_specs) > 0) {
gpointer data = g_list_nth_data(v4l2element->control_specs, 0);
v4l2element->control_specs = g_list_remove(v4l2element->control_specs, data);
g_param_spec_unref(G_PARAM_SPEC(data));
}
g_list_foreach (v4l2element->channels, (GFunc) g_object_unref, NULL);
g_list_free (v4l2element->channels);
v4l2element->channels = NULL;
g_list_foreach (v4l2element->norms, (GFunc) g_object_unref, NULL);
g_list_free (v4l2element->norms);
v4l2element->norms = NULL;
g_list_foreach (v4l2element->colors, (GFunc) g_object_unref, NULL);
g_list_free (v4l2element->colors);
v4l2element->colors = NULL;
}
@ -351,35 +426,20 @@ gst_v4l2_close (GstV4l2Element *v4l2element)
gboolean
gst_v4l2_get_norm (GstV4l2Element *v4l2element,
gint *norm)
v4l2_std_id *norm)
{
v4l2_std_id std_id;
gint n;
DEBUG("getting norm");
GST_V4L2_CHECK_OPEN(v4l2element);
if (ioctl(v4l2element->video_fd, VIDIOC_G_STD, &std_id) < 0) {
if (ioctl(v4l2element->video_fd, VIDIOC_G_STD, norm) < 0) {
gst_element_error(GST_ELEMENT(v4l2element),
"Failed to get the current norm for device %s: %s",
v4l2element->device, g_strerror(errno));
return FALSE;
}
/* try to find out what norm number this actually is */
for (n=0;n<g_list_length(v4l2element->norms);n++) {
struct v4l2_standard *stdptr = (struct v4l2_standard *) g_list_nth_data(v4l2element->norms, n);
if (stdptr->id == std_id) {
*norm = n;
return TRUE;
}
}
gst_element_error(GST_ELEMENT(v4l2element),
"Failed to find norm '%llu' in our list of available norms for device %s",
std_id, v4l2element->device);
return FALSE;
}
/******************************************************
@ -390,27 +450,16 @@ gst_v4l2_get_norm (GstV4l2Element *v4l2element,
gboolean
gst_v4l2_set_norm (GstV4l2Element *v4l2element,
gint norm)
v4l2_std_id norm)
{
struct v4l2_standard *standard;
DEBUG("trying to set norm to %d", norm);
DEBUG("trying to set norm to %llx", norm);
GST_V4L2_CHECK_OPEN(v4l2element);
GST_V4L2_CHECK_NOT_ACTIVE(v4l2element);
if (norm < 0 || norm >= g_list_length(v4l2element->norms)) {
if (ioctl(v4l2element->video_fd, VIDIOC_S_STD, &norm) < 0) {
gst_element_error(GST_ELEMENT(v4l2element),
"Invalid norm number %d (%d-%d)",
norm, 0, g_list_length(v4l2element->norms));
return FALSE;
}
standard = (struct v4l2_standard *) g_list_nth_data(v4l2element->norms, norm);
if (ioctl(v4l2element->video_fd, VIDIOC_S_STD, &standard->id) < 0) {
gst_element_error(GST_ELEMENT(v4l2element),
"Failed to set norm '%s' (%llu) for device %s: %s",
standard->name, standard->id, v4l2element->device, g_strerror(errno));
"Failed to set norm 0x%llx for device %s: %s",
norm, v4l2element->device, g_strerror(errno));
return FALSE;
}
@ -460,13 +509,6 @@ gst_v4l2_set_input (GstV4l2Element *v4l2element,
GST_V4L2_CHECK_OPEN(v4l2element);
GST_V4L2_CHECK_NOT_ACTIVE(v4l2element);
if (input < 0 || input >= g_list_length(v4l2element->inputs)) {
gst_element_error(GST_ELEMENT(v4l2element),
"Invalid input number %d (%d-%d)",
input, 0, g_list_length(v4l2element->inputs));
return FALSE;
}
if (ioctl(v4l2element->video_fd, VIDIOC_S_INPUT, &input) < 0) {
gst_element_error(GST_ELEMENT(v4l2element),
"Failed to set input %d on device %s: %s",
@ -520,13 +562,6 @@ gst_v4l2_set_output (GstV4l2Element *v4l2element,
GST_V4L2_CHECK_OPEN(v4l2element);
GST_V4L2_CHECK_NOT_ACTIVE(v4l2element);
if (output < 0 || output >= g_list_length(v4l2element->outputs)) {
gst_element_error(GST_ELEMENT(v4l2element),
"Invalid output number %d (%d-%d)",
output, 0, g_list_length(v4l2element->outputs));
return FALSE;
}
if (ioctl(v4l2element->video_fd, VIDIOC_S_OUTPUT, &output) < 0) {
gst_element_error(GST_ELEMENT(v4l2element),
"Failed to set output %d on device %s: %s",
@ -538,36 +573,6 @@ gst_v4l2_set_output (GstV4l2Element *v4l2element,
}
/******************************************************
* gst_v4l2_has_tuner():
* Check whether the device has a tuner
* return value: TRUE if it has a tuner, else FALSE
******************************************************/
gint
gst_v4l2_has_tuner (GstV4l2Element *v4l2element,
gint *tuner_num)
{
gint input_num;
struct v4l2_input *input;
DEBUG("detecting whether device has a tuner");
GST_V4L2_CHECK_OPEN(v4l2element);
if (!gst_v4l2_get_input(v4l2element, &input_num))
return FALSE;
input = (struct v4l2_input *) g_list_nth_data(v4l2element->inputs, input_num);
if (input->type == V4L2_INPUT_TYPE_TUNER &&
v4l2element->vcap.capabilities & V4L2_CAP_TUNER) {
*tuner_num = input->tuner;
return TRUE;
}
return FALSE;
}
/******************************************************
* gst_v4l2_get_frequency():
* get the current frequency
@ -576,6 +581,7 @@ gst_v4l2_has_tuner (GstV4l2Element *v4l2element,
gboolean
gst_v4l2_get_frequency (GstV4l2Element *v4l2element,
gint tunernum,
gulong *frequency)
{
struct v4l2_frequency freq;
@ -583,11 +589,7 @@ gst_v4l2_get_frequency (GstV4l2Element *v4l2element,
DEBUG("getting current tuner frequency");
GST_V4L2_CHECK_OPEN(v4l2element);
if (!gst_v4l2_has_tuner(v4l2element, &freq.tuner))
return FALSE;
freq.type = 0;
freq.tuner = tunernum;
if (ioctl(v4l2element->video_fd, VIDIOC_G_FREQUENCY, &freq) < 0) {
gst_element_error(GST_ELEMENT(v4l2element),
"Failed to get current tuner frequency for device %s: %s",
@ -609,6 +611,7 @@ gst_v4l2_get_frequency (GstV4l2Element *v4l2element,
gboolean
gst_v4l2_set_frequency (GstV4l2Element *v4l2element,
gint tunernum,
gulong frequency)
{
struct v4l2_frequency freq;
@ -617,13 +620,12 @@ gst_v4l2_set_frequency (GstV4l2Element *v4l2element,
GST_V4L2_CHECK_OPEN(v4l2element);
GST_V4L2_CHECK_NOT_ACTIVE(v4l2element);
if (!gst_v4l2_has_tuner(v4l2element, &freq.tuner))
return FALSE;
freq.tuner = tunernum;
/* fill in type - ignore error */
ioctl(v4l2element->video_fd, VIDIOC_G_FREQUENCY, &freq);
freq.frequency = frequency;
freq.type = 0;
if (ioctl(v4l2element->video_fd, VIDIOC_G_FREQUENCY, &freq) < 0) {
if (ioctl(v4l2element->video_fd, VIDIOC_S_FREQUENCY, &freq) < 0) {
gst_element_error(GST_ELEMENT(v4l2element),
"Failed to set tuner frequency to %lu for device %s: %s",
frequency, v4l2element->device, g_strerror(errno));
@ -642,6 +644,7 @@ gst_v4l2_set_frequency (GstV4l2Element *v4l2element,
gboolean
gst_v4l2_signal_strength (GstV4l2Element *v4l2element,
gint tunernum,
gulong *signal_strength)
{
struct v4l2_tuner tuner;
@ -649,6 +652,7 @@ gst_v4l2_signal_strength (GstV4l2Element *v4l2element,
DEBUG("trying to get signal strength");
GST_V4L2_CHECK_OPEN(v4l2element);
tuner.index = tunernum;
if (ioctl(v4l2element->video_fd, VIDIOC_G_TUNER, &tuner) < 0) {
gst_element_error(GST_ELEMENT(v4l2element),
"Failed to get signal strength for device %s: %s",
@ -662,51 +666,6 @@ gst_v4l2_signal_strength (GstV4l2Element *v4l2element,
}
/******************************************************
* gst_v4l2_has_audio():
* Check whether the device has audio capabilities
* return value: TRUE if it has a tuner, else FALSE
******************************************************/
gboolean
gst_v4l2_has_audio (GstV4l2Element *v4l2element)
{
gint input_num;
struct v4l2_input *input;
DEBUG("detecting whether device has audio");
GST_V4L2_CHECK_OPEN(v4l2element);
if (!gst_v4l2_get_input(v4l2element, &input_num))
return FALSE;
input = (struct v4l2_input *) g_list_nth_data(v4l2element->inputs, input_num);
return (input->audioset != 0);
}
/******************************************************
* gst_v4l2_control_name_to_num():
* convert name to num (-1 if nothing)
******************************************************/
static gint
gst_v4l2_control_name_to_num (GstV4l2Element *v4l2element,
const gchar *name)
{
GList *item;
for (item = v4l2element->controls; item != NULL; item = item->next) {
struct v4l2_queryctrl *ctrl = item->data;
if (!strcmp(ctrl->name, name))
return ctrl->id;
}
return -1;
}
/******************************************************
* gst_v4l2_get_attribute():
* try to get the value of one specific attribute
@ -714,35 +673,22 @@ gst_v4l2_control_name_to_num (GstV4l2Element *v4l2element,
******************************************************/
gboolean
gst_v4l2_get_attribute (GstElement *element,
const gchar *name,
gst_v4l2_get_attribute (GstV4l2Element *v4l2element,
int attribute_num,
int *value)
{
struct v4l2_control control;
GstV4l2Element *v4l2element;
gint attribute_num = -1;
g_return_val_if_fail(element != NULL && name != NULL && value != NULL, FALSE);
g_return_val_if_fail(GST_IS_V4L2ELEMENT(element), FALSE);
v4l2element = GST_V4L2ELEMENT(element);
DEBUG("getting value of attribute %d", attribute_num);
GST_V4L2_CHECK_OPEN(v4l2element);
attribute_num = gst_v4l2_control_name_to_num(v4l2element, name);
if (attribute_num < 0) {
gst_element_error(GST_ELEMENT(v4l2element),
"Invalid control %s", name);
return FALSE;
}
DEBUG("getting value of attribute %d", attribute_num);
control.id = attribute_num;
if (ioctl(v4l2element->video_fd, VIDIOC_G_CTRL, &control) < 0) {
gst_element_error(GST_ELEMENT(v4l2element),
"Failed to get value for control %s (%d) on device %s: %s",
name, attribute_num, v4l2element->device, g_strerror(errno));
"Failed to get value for control %d on device %s: %s",
attribute_num, v4l2element->device, g_strerror(errno));
return FALSE;
}
@ -759,36 +705,23 @@ gst_v4l2_get_attribute (GstElement *element,
******************************************************/
gboolean
gst_v4l2_set_attribute (GstElement *element,
const gchar *name,
gst_v4l2_set_attribute (GstV4l2Element *v4l2element,
int attribute_num,
const int value)
{
struct v4l2_control control;
GstV4l2Element *v4l2element;
gint attribute_num = -1;
g_return_val_if_fail(element != NULL && name != NULL, FALSE);
g_return_val_if_fail(GST_IS_V4L2ELEMENT(element), FALSE);
v4l2element = GST_V4L2ELEMENT(element);
DEBUG("setting value of attribute %d to %d", attribute_num, value);
GST_V4L2_CHECK_OPEN(v4l2element);
attribute_num = gst_v4l2_control_name_to_num(v4l2element, name);
if (attribute_num < 0) {
gst_element_error(GST_ELEMENT(v4l2element),
"Invalid control %s", name);
return FALSE;
}
DEBUG("setting value of attribute %d to %d", attribute_num, value);
control.id = attribute_num;
control.value = value;
if (ioctl(v4l2element->video_fd, VIDIOC_S_CTRL, &control) < 0) {
gst_element_error(GST_ELEMENT(v4l2element),
"Failed to set value %d for control %s (%d) on device %s: %s",
value, name, attribute_num, v4l2element->device, g_strerror(errno));
"Failed to set value %d for control %d on device %s: %s",
value, attribute_num, v4l2element->device, g_strerror(errno));
return FALSE;
}

23
sys/v4l2/v4l2_calls.h
View file

@ -86,9 +86,9 @@ gboolean gst_v4l2_close (GstV4l2Element *v4l2element);
/* norm/input/output */
gboolean gst_v4l2_get_norm (GstV4l2Element *v4l2element,
gint *norm);
v4l2_std_id *norm);
gboolean gst_v4l2_set_norm (GstV4l2Element *v4l2element,
gint norm);
v4l2_std_id norm);
gboolean gst_v4l2_get_input (GstV4l2Element *v4l2element,
gint *input);
gboolean gst_v4l2_set_input (GstV4l2Element *v4l2element,
@ -99,27 +99,26 @@ gboolean gst_v4l2_set_output (GstV4l2Element *v4l2element,
gint output);
/* frequency control */
gboolean gst_v4l2_has_tuner (GstV4l2Element *v4l2element,
gint *tuner_num);
gboolean gst_v4l2_get_frequency (GstV4l2Element *v4l2element,
gint tunernum,
gulong *frequency);
gboolean gst_v4l2_set_frequency (GstV4l2Element *v4l2element,
gint tunernum,
gulong frequency);
gboolean gst_v4l2_signal_strength (GstV4l2Element *v4l2element,
gulong *signal_strength);
gint tunernum,
gulong *signal);
/* attribute control */
gboolean gst_v4l2_has_audio (GstV4l2Element *v4l2element);
gboolean gst_v4l2_get_attribute (GstElement *element,
const char *attribute,
gboolean gst_v4l2_get_attribute (GstV4l2Element *v4l2element,
int attribute,
int *value);
gboolean gst_v4l2_set_attribute (GstElement *element,
const char *attribute,
gboolean gst_v4l2_set_attribute (GstV4l2Element *v4l2element,
int attribute,
const int value);
/* overlay */
gboolean gst_v4l2_set_display (GstV4l2Element *v4l2element,
const gchar *display);
gboolean gst_v4l2_set_display (GstV4l2Element *v4l2element);
gboolean gst_v4l2_set_window (GstElement *element,
gint x, gint y,
gint w, gint h,