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V4L2 ported to 0.10.

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Original commit message from CVS:
V4L2 ported to 0.10.
This commit is contained in:
Edgard Lima 2006-03-11 22:50:03 +00:00
parent 5a72b167bb
commit 2dd8010618
15 changed files with 1404 additions and 1413 deletions
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22
sys/v4l2/Makefile.am
View file

@ -1,5 +1,4 @@
plugin_LTLIBRARIES = \
libgstvideo4linux2.la
plugin_LTLIBRARIES = libgstvideo4linux2.la
if USE_XVIDEO
xv_source = gstv4l2xoverlay.c
@ -10,18 +9,19 @@ xv_libs =
endif
libgstvideo4linux2_la_SOURCES = \
gstv4l2element.c v4l2_calls.c \
gstv4l2src.c v4l2src_calls.c \
gstv4l2.c \
gstv4l2colorbalance.c \
gstv4l2element.c \
gstv4l2src.c \
gstv4l2tuner.c \
$(xv_source) \
gstv4l2colorbalance.c
libgstvideo4linux2_la_CFLAGS = $(GST_CFLAGS) $(X_CFLAGS)
v4l2_calls.c \
v4l2src_calls.c $(xv_source)
libgstvideo4linux2_la_CFLAGS = $(GST_CFLAGS) $(X_CFLAGS) $(GST_BASE_LIBS_CFLAGS) $(GST_PLUGINS_BASE_CFLAGS)
libgstvideo4linux2_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
libgstvideo4linux2_la_LIBADD = \
$(top_builddir)/gst-libs/gst/libgstinterfaces-@GST_MAJORMINOR@.la
libgstvideo4linux2_la_LDFLAGS = \
$(GST_PLUGIN_LDFLAGS) \
$(xv_libs)
-lgstinterfaces-$(GST_MAJORMINOR) \
$(GST_BASE_LIBS) $(GST_LIBS) $(xv_libs)
noinst_HEADERS = gstv4l2element.h v4l2_calls.h \
gstv4l2src.h v4l2src_calls.h \

32
sys/v4l2/gstv4l2.c
View file

@ -1,5 +1,8 @@
/* G-Streamer Video4linux2 video-capture plugin
* Copyright (C) 2002 Ronald Bultje <rbultje@ronald.bitfreak.net>
/* GStreamer
*
* gstv4l2.c: plugin for v4l2 elements
*
* Copyright (C) 2001-2002 Ronald Bultje <rbultje@ronald.bitfreak.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
@ -21,20 +24,31 @@
#include "config.h"
#endif
#include <gst/gst.h>
#include "gst/gst-i18n-plugin.h"
#include <gst/gst.h>
#include "gstv4l2element.h"
#include "gstv4l2src.h"
/* #include "gstv4l2jpegsrc.h" */
/* #include "gstv4l2mjpegsrc.h" */
/* #include "gstv4l2mjpegsink.h" */
GST_DEBUG_CATEGORY (v4l2_debug); /* used in v4l2_calls.c and v4l2src_calls.c */
static gboolean
plugin_init (GstPlugin * plugin)
{
if (!gst_element_register (plugin, "v4l2element",
GST_RANK_NONE, GST_TYPE_V4L2ELEMENT) ||
!gst_element_register (plugin, "v4l2src",
GST_RANK_NONE, GST_TYPE_V4L2SRC))
GST_DEBUG_CATEGORY_INIT (v4l2_debug, "v4l2", 0, "V4L2 API calls");
if (!gst_element_register (plugin, "v4l2src", GST_RANK_NONE,
GST_TYPE_V4L2SRC))
/* !gst_element_register (plugin, "v4l2jpegsrc", */
/* GST_RANK_NONE, GST_TYPE_V4L2JPEGSRC) || */
/* !gst_element_register (plugin, "v4l2mjpegsrc", */
/* GST_RANK_NONE, GST_TYPE_V4L2MJPEGSRC) || */
/* !gst_element_register (plugin, "v4l2mjpegsink", */
/* GST_RANK_NONE, GST_TYPE_V4L2MJPEGSINK)) */
return FALSE;
#ifdef ENABLE_NLS
@ -48,5 +62,5 @@ plugin_init (GstPlugin * plugin)
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"video4linux2",
"elements for Video 4 Linux 2",
"elements for Video 4 Linux",
plugin_init, VERSION, GST_LICENSE, GST_PACKAGE, GST_ORIGIN)

10
sys/v4l2/gstv4l2colorbalance.h
View file

@ -23,7 +23,7 @@
#define __GST_V4L2_COLOR_BALANCE_H__
#include <gst/gst.h>
#include <gst/colorbalance/colorbalance.h>
#include <gst/interfaces/colorbalance.h>
#include "v4l2_calls.h"
G_BEGIN_DECLS
@ -32,10 +32,10 @@ G_BEGIN_DECLS
(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))
GstV4l2ColorBalanceChannel))
#define GST_V4L2_COLOR_BALANCE_CHANNEL_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_V4L2_COLOR_BALANCE_CHANNEL, \
GstV4l2ColorBalanceChannelClass))
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) \
@ -51,8 +51,8 @@ typedef struct _GstV4l2ColorBalanceChannelClass {
GstColorBalanceChannelClass parent;
} GstV4l2ColorBalanceChannelClass;
GType gst_v4l2_color_balance_channel_get_type (void);
GType gst_v4l2_color_balance_channel_get_type (void);
void gst_v4l2_color_balance_interface_init (GstColorBalanceClass *klass);
void gst_v4l2_color_balance_interface_init (GstColorBalanceClass *klass);
#endif /* __GST_V4L2_COLOR_BALANCE_H__ */

428
sys/v4l2/gstv4l2element.c
View file

@ -1,5 +1,8 @@
/* G-Streamer generic V4L2 element
* Copyright (C) 2002 Ronald Bultje <rbultje@ronald.bitfreak.net>
/* GStreamer
*
* gstv4l2element.c: base class for V4L2 elements
*
* Copyright (C) 2001-2002 Ronald Bultje <rbultje@ronald.bitfreak.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
@ -25,6 +28,9 @@
#include <fcntl.h>
#include <errno.h>
#include <unistd.h>
#include <string.h>
#include <gst/interfaces/propertyprobe.h>
#include "v4l2_calls.h"
#include "gstv4l2tuner.h"
@ -33,55 +39,37 @@
#endif
#include "gstv4l2colorbalance.h"
#include <gst/propertyprobe/propertyprobe.h>
/* elementfactory details */
static GstElementDetails gst_v4l2element_details = {
"Generic video4linux2 Element",
"Generic/Video",
"Generic plugin for handling common video4linux2 calls",
"Ronald Bultje <rbultje@ronald.bitfreak.net>"
};
/* V4l2Element signals and args */
enum
{
/* FILL ME */
SIGNAL_OPEN,
SIGNAL_CLOSE,
LAST_SIGNAL
};
enum
{
ARG_0,
ARG_DEVICE,
ARG_DEVICE_NAME,
ARG_NORM,
ARG_CHANNEL,
ARG_FREQUENCY,
ARG_FLAGS
PROP_0,
PROP_DEVICE,
PROP_DEVICE_NAME,
PROP_FLAGS,
PROP_STD,
PROP_INPUT,
PROP_FREQUENCY
};
static void gst_v4l2element_class_init (GstV4l2ElementClass * klass);
static void gst_v4l2element_base_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,
static void gst_v4l2element_init_interfaces (GType type);
GST_BOILERPLATE_FULL (GstV4l2Element, gst_v4l2element, GstPushSrc,
GST_TYPE_PUSH_SRC, gst_v4l2element_init_interfaces)
static void gst_v4l2element_dispose (GObject * object);
static void gst_v4l2element_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec);
static void gst_v4l2element_get_property (GObject * object,
static void gst_v4l2element_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec);
static GstStateChangeReturn
gst_v4l2element_change_state (GstElement * element, GstStateChange transition);
static gboolean gst_v4l2element_start (GstBaseSrc * src);
static gboolean gst_v4l2element_stop (GstBaseSrc * src);
static GstElementClass *parent_class = NULL;
static guint gst_v4l2element_signals[LAST_SIGNAL] = { 0 };
static gboolean
gst_v4l2_iface_supported (GstImplementsInterface * iface, GType iface_type)
static gboolean
gst_v4l2_iface_supported (GstImplementsInterface * iface,
GType iface_type)
{
GstV4l2Element *v4l2element = GST_V4L2ELEMENT (iface);
@ -104,7 +92,6 @@ gst_v4l2_iface_supported (GstImplementsInterface * iface, GType iface_type)
return TRUE;
}
static void
gst_v4l2_interface_init (GstImplementsInterfaceClass * klass)
{
@ -112,7 +99,6 @@ gst_v4l2_interface_init (GstImplementsInterfaceClass * klass)
klass->supported = gst_v4l2_iface_supported;
}
static const GList *
gst_v4l2_probe_get_properties (GstPropertyProbe * probe)
{
@ -133,7 +119,7 @@ gst_v4l2_class_probe_devices (GstV4l2ElementClass * klass, gboolean check)
static GList *devices = NULL;
if (!init && !check) {
gchar *dev_base[] = { "/dev/video", "/dev/v4l/video", NULL };
gchar *dev_base[] = { "/dev/video", "/dev/v4l2/video", NULL };
gint base, n, fd;
while (devices) {
@ -148,8 +134,7 @@ gst_v4l2_class_probe_devices (GstV4l2ElementClass * klass, gboolean check)
for (n = 0; n < 64; n++) {
for (base = 0; dev_base[base] != NULL; base++) {
struct stat s;
gchar *device = g_strdup_printf ("%s%d",
dev_base[base], n);
gchar *device = g_strdup_printf ("%s%d", dev_base[base], n);
/* does the /dev/ entry exist at all? */
if (stat (device, &s) == 0) {
@ -181,7 +166,7 @@ gst_v4l2_probe_probe_property (GstPropertyProbe * probe,
GstV4l2ElementClass *klass = GST_V4L2ELEMENT_GET_CLASS (probe);
switch (prop_id) {
case ARG_DEVICE:
case PROP_DEVICE:
gst_v4l2_class_probe_devices (klass, FALSE);
break;
default:
@ -198,7 +183,7 @@ gst_v4l2_probe_needs_probe (GstPropertyProbe * probe,
gboolean ret = FALSE;
switch (prop_id) {
case ARG_DEVICE:
case PROP_DEVICE:
ret = !gst_v4l2_class_probe_devices (klass, TRUE);
break;
default:
@ -243,7 +228,7 @@ gst_v4l2_probe_get_values (GstPropertyProbe * probe,
GValueArray *array = NULL;
switch (prop_id) {
case ARG_DEVICE:
case PROP_DEVICE:
array = gst_v4l2_class_list_devices (klass);
break;
default:
@ -254,7 +239,6 @@ gst_v4l2_probe_get_values (GstPropertyProbe * probe,
return array;
}
static void
gst_v4l2_property_probe_interface_init (GstPropertyProbeInterface * iface)
{
@ -264,75 +248,6 @@ gst_v4l2_property_probe_interface_init (GstPropertyProbeInterface * iface)
iface->get_values = gst_v4l2_probe_get_values;
}
GType
gst_v4l2element_get_type (void)
{
static GType v4l2element_type = 0;
if (!v4l2element_type) {
static const GTypeInfo v4l2element_info = {
sizeof (GstV4l2ElementClass),
(GBaseInitFunc) gst_v4l2element_base_init,
NULL,
(GClassInitFunc) gst_v4l2element_class_init,
NULL,
NULL,
sizeof (GstV4l2Element),
0,
(GInstanceInitFunc) gst_v4l2element_init,
NULL
};
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,
};
#ifdef HAVE_XVIDEO
static const GInterfaceInfo v4l2_xoverlay_info = {
(GInterfaceInitFunc) gst_v4l2_xoverlay_interface_init,
NULL,
NULL,
};
#endif
static const GInterfaceInfo v4l2_colorbalance_info = {
(GInterfaceInitFunc) gst_v4l2_color_balance_interface_init,
NULL,
NULL,
};
static const GInterfaceInfo v4l2_propertyprobe_info = {
(GInterfaceInitFunc) gst_v4l2_property_probe_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_IMPLEMENTS_INTERFACE, &v4l2iface_info);
g_type_add_interface_static (v4l2element_type,
GST_TYPE_TUNER, &v4l2_tuner_info);
#ifdef HAVE_XVIDEO
g_type_add_interface_static (v4l2element_type,
GST_TYPE_X_OVERLAY, &v4l2_xoverlay_info);
#endif
g_type_add_interface_static (v4l2element_type,
GST_TYPE_COLOR_BALANCE, &v4l2_colorbalance_info);
g_type_add_interface_static (v4l2element_type,
GST_TYPE_PROPERTY_PROBE, &v4l2_propertyprobe_info);
}
return v4l2element_type;
}
#define GST_TYPE_V4L2_DEVICE_FLAGS (gst_v4l2_device_get_type ())
GType
gst_v4l2_device_get_type (void)
@ -341,16 +256,13 @@ gst_v4l2_device_get_type (void)
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"},
{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}
};
@ -362,73 +274,108 @@ gst_v4l2_device_get_type (void)
}
static void
gst_v4l2element_base_init (GstV4l2ElementClass * klass)
gst_v4l2element_init_interfaces (GType type)
{
GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
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,
};
#ifdef HAVE_XVIDEO
static const GInterfaceInfo v4l2_xoverlay_info = {
(GInterfaceInitFunc) gst_v4l2_xoverlay_interface_init,
NULL,
NULL,
};
#endif
static const GInterfaceInfo v4l2_colorbalance_info = {
(GInterfaceInitFunc) gst_v4l2_color_balance_interface_init,
NULL,
NULL,
};
static const GInterfaceInfo v4l2_propertyprobe_info = {
(GInterfaceInitFunc) gst_v4l2_property_probe_interface_init,
NULL,
NULL,
};
g_type_add_interface_static (type,
GST_TYPE_IMPLEMENTS_INTERFACE, &v4l2iface_info);
g_type_add_interface_static (type, GST_TYPE_TUNER, &v4l2_tuner_info);
#ifdef HAVE_XVIDEO
g_type_add_interface_static (type, GST_TYPE_X_OVERLAY, &v4l2_xoverlay_info);
#endif
g_type_add_interface_static (type,
GST_TYPE_COLOR_BALANCE, &v4l2_colorbalance_info);
g_type_add_interface_static (type,
GST_TYPE_PROPERTY_PROBE, &v4l2_propertyprobe_info);
}
static void
gst_v4l2element_base_init (gpointer g_class)
{
GstV4l2ElementClass *klass = GST_V4L2ELEMENT_CLASS (g_class);
klass->devices = NULL;
gst_element_class_set_details (gstelement_class, &gst_v4l2element_details);
}
static void
gst_v4l2element_class_init (GstV4l2ElementClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
GObjectClass *gobject_class;
GstBaseSrcClass *basesrc_class;
parent_class = g_type_class_peek_parent (klass);
g_object_class_install_property (gobject_class, ARG_DEVICE,
g_param_spec_string ("device", "Device", "Device location",
NULL, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_DEVICE_NAME,
g_param_spec_string ("device_name", "Device name",
"Name of the device", NULL, G_PARAM_READABLE));
g_object_class_install_property (gobject_class, ARG_FLAGS,
g_param_spec_flags ("flags", "Flags", "Device type flags",
GST_TYPE_V4L2_DEVICE_FLAGS, 0, G_PARAM_READABLE));
g_object_class_install_property (gobject_class, ARG_NORM,
g_param_spec_string ("norm", "norm",
"Norm to use", NULL, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_CHANNEL,
g_param_spec_string ("channel", "channel",
"input/output to switch to", NULL, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_FREQUENCY,
g_param_spec_ulong ("frequency", "frequency",
"frequency to tune to (in Hz)", 0, G_MAXULONG, 0, G_PARAM_READWRITE));
/* signals */
gst_v4l2element_signals[SIGNAL_OPEN] =
g_signal_new ("open", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GstV4l2ElementClass, open),
NULL, NULL, g_cclosure_marshal_VOID__STRING,
G_TYPE_NONE, 1, G_TYPE_STRING);
gst_v4l2element_signals[SIGNAL_CLOSE] =
g_signal_new ("close", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GstV4l2ElementClass, close),
NULL, NULL, g_cclosure_marshal_VOID__STRING,
G_TYPE_NONE, 1, G_TYPE_STRING);
gobject_class = (GObjectClass *) klass;
basesrc_class = (GstBaseSrcClass *) 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;
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_DEVICE,
g_param_spec_string ("device", "Device", "Device location",
NULL, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_DEVICE_NAME,
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), PROP_FLAGS,
g_param_spec_flags ("flags", "Flags", "Device type flags",
GST_TYPE_V4L2_DEVICE_FLAGS, 0, G_PARAM_READABLE));
g_object_class_install_property (gobject_class, PROP_STD,
g_param_spec_string ("std", "std",
"standard (norm) to use", NULL, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, PROP_INPUT,
g_param_spec_string ("input", "input",
"input/output (channel) to switch to", NULL, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, PROP_FREQUENCY,
g_param_spec_ulong ("frequency", "frequency",
"frequency to tune to (in Hz)", 0, G_MAXULONG, 0, G_PARAM_READWRITE));
basesrc_class->start = gst_v4l2element_start;
basesrc_class->stop = gst_v4l2element_stop;
gobject_class->dispose = gst_v4l2element_dispose;
}
static void
gst_v4l2element_init (GstV4l2Element * v4l2element)
gst_v4l2element_init (GstV4l2Element * v4l2element, GstV4l2ElementClass * klass)
{
/* some default values */
v4l2element->video_fd = -1;
v4l2element->buffer = NULL;
v4l2element->device = g_strdup ("/dev/video0");
v4l2element->videodev = g_strdup ("/dev/video0");
v4l2element->channels = NULL;
v4l2element->norms = NULL;
v4l2element->stds = NULL;
v4l2element->inputs = NULL;
v4l2element->colors = NULL;
v4l2element->xwindow_id = 0;
}
@ -437,35 +384,29 @@ gst_v4l2element_dispose (GObject * object)
{
GstV4l2Element *v4l2element = GST_V4L2ELEMENT (object);
g_free (v4l2element->device);
v4l2element->device = NULL;
g_free (v4l2element->norm);
v4l2element->norm = NULL;
g_free (v4l2element->channel);
v4l2element->channel = NULL;
if (v4l2element->videodev) {
g_free (v4l2element->videodev);
v4l2element->videodev = NULL;
}
if (((GObjectClass *) parent_class)->dispose)
((GObjectClass *) parent_class)->dispose (object);
}
static void
gst_v4l2element_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec)
{
GstV4l2Element *v4l2element;
g_return_if_fail (GST_IS_V4L2ELEMENT (object));
v4l2element = GST_V4L2ELEMENT (object);
GstV4l2Element *v4l2element = GST_V4L2ELEMENT (object);
switch (prop_id) {
case ARG_DEVICE:
if (!GST_V4L2_IS_OPEN (v4l2element)) {
if (v4l2element->device)
g_free (v4l2element->device);
v4l2element->device = g_value_dup_string (value);
}
case PROP_DEVICE:
if (v4l2element->videodev)
g_free (v4l2element->videodev);
v4l2element->videodev = g_strdup (g_value_get_string (value));
break;
case ARG_NORM:
case PROP_STD:
if (GST_V4L2_IS_OPEN (v4l2element)) {
GstTuner *tuner = GST_TUNER (v4l2element);
GstTunerNorm *norm = gst_tuner_find_norm_by_name (tuner,
@ -475,12 +416,12 @@ gst_v4l2element_set_property (GObject * object,
gst_tuner_set_norm (tuner, norm);
}
} else {
g_free (v4l2element->norm);
v4l2element->norm = g_value_dup_string (value);
g_object_notify (object, "norm");
g_free (v4l2element->std);
v4l2element->std = g_value_dup_string (value);
g_object_notify (object, "std");
}
break;
case ARG_CHANNEL:
case PROP_INPUT:
if (GST_V4L2_IS_OPEN (v4l2element)) {
GstTuner *tuner = GST_TUNER (v4l2element);
GstTunerChannel *channel = gst_tuner_find_channel_by_name (tuner,
@ -490,12 +431,12 @@ gst_v4l2element_set_property (GObject * object,
gst_tuner_set_channel (tuner, channel);
}
} else {
g_free (v4l2element->channel);
v4l2element->channel = g_value_dup_string (value);
g_object_notify (object, "channel");
g_free (v4l2element->input);
v4l2element->input = g_value_dup_string (value);
g_object_notify (object, "input");
}
break;
case ARG_FREQUENCY:
case PROP_FREQUENCY:
if (GST_V4L2_IS_OPEN (v4l2element)) {
GstTuner *tuner = GST_TUNER (v4l2element);
GstTunerChannel *channel = gst_tuner_get_channel (tuner);
@ -520,39 +461,40 @@ static void
gst_v4l2element_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec)
{
GstV4l2Element *v4l2element;
g_return_if_fail (GST_IS_V4L2ELEMENT (object));
v4l2element = GST_V4L2ELEMENT (object);
GstV4l2Element *v4l2element = GST_V4L2ELEMENT (object);
switch (prop_id) {
case ARG_DEVICE:
g_value_set_string (value, v4l2element->device);
case PROP_DEVICE:
g_value_set_string (value, v4l2element->videodev);
break;
case ARG_DEVICE_NAME:{
case PROP_DEVICE_NAME:{
gchar *new = NULL;
if (GST_V4L2_IS_OPEN (v4l2element))
new = v4l2element->vcap.card;
new = (gchar *) v4l2element->vcap.card;
g_value_set_string (value, new);
break;
}
case ARG_FLAGS:{
case PROP_FLAGS:{
guint flags = 0;
if (GST_V4L2_IS_OPEN (v4l2element)) {
flags |= v4l2element->vcap.capabilities & 0x30007;
flags |= v4l2element->vcap.capabilities &
(V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OUTPUT |
V4L2_CAP_VIDEO_OVERLAY | V4L2_CAP_TUNER | V4L2_CAP_AUDIO);
if (v4l2element->vcap.capabilities & V4L2_CAP_AUDIO)
flags |= V4L2_FBUF_CAP_CHROMAKEY;
}
g_value_set_flags (value, flags);
break;
}
case ARG_NORM:
g_value_set_string (value, v4l2element->norm);
case PROP_STD:
g_value_set_string (value, v4l2element->std);
break;
case ARG_CHANNEL:
g_value_set_string (value, v4l2element->channel);
case PROP_INPUT:
g_value_set_string (value, v4l2element->input);
break;
case ARG_FREQUENCY:
case PROP_FREQUENCY:
g_value_set_ulong (value, v4l2element->frequency);
break;
default:
@ -561,48 +503,32 @@ gst_v4l2element_get_property (GObject * object,
}
}
static GstStateChangeReturn
gst_v4l2element_change_state (GstElement * element, GstStateChange transition)
static gboolean
gst_v4l2element_start (GstBaseSrc * src)
{
GstV4l2Element *v4l2element;
GstV4l2Element *v4l2element = GST_V4L2ELEMENT (src);
g_return_val_if_fail (GST_IS_V4L2ELEMENT (element), GST_STATE_CHANGE_FAILURE);
v4l2element = GST_V4L2ELEMENT (element);
/* if going down into NULL state, close the device if it's open
* if going to READY, open the device (and set some options)
*/
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
if (!gst_v4l2_open (v4l2element))
return GST_STATE_CHANGE_FAILURE;
if (!gst_v4l2_open (v4l2element))
return FALSE;
#ifdef HAVE_XVIDEO
gst_v4l2_xoverlay_open (v4l2element);
gst_v4l2_xoverlay_start (v4l2element);
#endif
/* emit a signal! whoopie! */
g_signal_emit (G_OBJECT (v4l2element),
gst_v4l2element_signals[SIGNAL_OPEN], 0, v4l2element->device);
break;
case GST_STATE_CHANGE_READY_TO_NULL:
#ifdef HAVE_XVIDEO
gst_v4l2_xoverlay_close (v4l2element);
#endif
if (!gst_v4l2_close (v4l2element))
return GST_STATE_CHANGE_FAILURE;
/* emit yet another signal! wheehee! */
g_signal_emit (G_OBJECT (v4l2element),
gst_v4l2element_signals[SIGNAL_CLOSE], 0, v4l2element->device);
break;
}
if (GST_ELEMENT_CLASS (parent_class)->change_state)
return GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
return GST_STATE_CHANGE_SUCCESS;
return TRUE;
}
static gboolean
gst_v4l2element_stop (GstBaseSrc * src)
{
GstV4l2Element *v4l2element = GST_V4L2ELEMENT (src);
#ifdef HAVE_XVIDEO
gst_v4l2_xoverlay_stop (v4l2element);
#endif
if (!gst_v4l2_close (v4l2element))
return FALSE;
return TRUE;
}

143
sys/v4l2/gstv4l2element.h
View file

@ -1,5 +1,8 @@
/* G-Streamer generic V4L2 element
* Copyright (C) 2002 Ronald Bultje <rbultje@ronald.bitfreak.net>
/* GStreamer
*
* gstv4l2element.h: base class for V4L2 elements
*
* Copyright (C) 2001-2002 Ronald Bultje <rbultje@ronald.bitfreak.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
@ -20,9 +23,6 @@
#ifndef __GST_V4L2ELEMENT_H__
#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
* ourselves. In all their intelligence, these people decided to fix
@ -36,104 +36,87 @@
* errors here, check your linux/time.h && sys/time.h header setup.
*/
#include <sys/types.h>
#include <linux/types.h>
#define _LINUX_TIME_H
#define __user
#include <linux/videodev2.h>
/*
* See bug #135919, the Suse9 (and Mandrake10) videodev2 headers
* contain a bug where (for userspace applications) the v4l2_buffer
* struct is not declared, so applications have to declare it.
* Declaration straightly ripped out from <linux/videodev2.h>.
*/
#ifdef GST_V4L2_MISSING_BUFDECL
struct v4l2_buffer
{
__u32 index;
enum v4l2_buf_type type;
__u32 bytesused;
__u32 flags;
enum v4l2_field field;
struct timeval timestamp;
struct v4l2_timecode timecode;
__u32 sequence;
/* memory location */
enum v4l2_memory memory;
union {
__u32 offset;
unsigned long userptr;
} m;
__u32 length;
__u32 reserved[2];
};
#endif /* GST_V4L2_MISSING_BUFDECL */
#include <gst/gst.h>
#include <gst/base/gstpushsrc.h>
#define GST_TYPE_V4L2ELEMENT \
(gst_v4l2element_get_type())
#define GST_V4L2ELEMENT(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_V4L2ELEMENT, GstV4l2Element))
#define GST_V4L2ELEMENT_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_V4L2ELEMENT, GstV4l2ElementClass))
#define GST_IS_V4L2ELEMENT(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_V4L2ELEMENT))
#define GST_IS_V4L2ELEMENT_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_V4L2ELEMENT))
#define GST_V4L2ELEMENT_GET_CLASS(obj) \
(G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_V4L2ELEMENT, GstV4l2ElementClass))
G_BEGIN_DECLS
#define GST_TYPE_V4L2ELEMENT \
(gst_v4l2element_get_type())
#define GST_V4L2ELEMENT(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_V4L2ELEMENT,GstV4l2Element))
#define GST_V4L2ELEMENT_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_V4L2ELEMENT,GstV4l2ElementClass))
#define GST_IS_V4L2ELEMENT(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_V4L2ELEMENT))
#define GST_IS_V4L2ELEMENT_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_V4L2ELEMENT))
#define GST_V4L2ELEMENT_GET_CLASS(obj) \
(G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_V4L2ELEMENT, GstV4l2ElementClass))
typedef struct _GstV4l2Element GstV4l2Element;
typedef struct _GstV4l2ElementClass GstV4l2ElementClass;
typedef struct _GstV4l2Xv GstV4l2Xv;
typedef struct _GstV4l2Element GstV4l2Element;
typedef struct _GstV4l2ElementClass GstV4l2ElementClass;
typedef struct _GstV4l2Xv GstV4l2Xv;
struct _GstV4l2Element {
GstElement element;
GstPushSrc element;
/* the video device */
char *device;
/* the video device */
char *videodev;
/* the video-device's file descriptor */
gint video_fd;
/* the video-device's file descriptor */
gint video_fd;
/* the video buffer (mmap()'ed) */
guint8 **buffer;
/* the video buffer (mmap()'ed) */
guint8 **buffer;
/* the video-device's capabilities */
struct v4l2_capability vcap;
/* the video device's capabilities */
struct v4l2_capability vcap;
/* the toys available to us */
GList *channels;
GList *norms;
GList *colors;
/* the video device's window properties */
struct v4l2_window vwin;
/* X-overlay */
GstV4l2Xv *xv;
XID xwindow_id;
/* some more info about the current input's capabilities */
struct v4l2_input vinput;
/* properties */
gchar *norm;
gchar *channel;
gulong frequency;
/* lists... */
GList *colors;
GList *stds;
GList *inputs;
/* properties */
gchar *std;
gchar *input;
gulong frequency;
/* X-overlay */
GstV4l2Xv *xv;
gulong xwindow_id;
};
struct _GstV4l2ElementClass {
GstElementClass parent_class;
GstPushSrcClass parent_class;
/* probed devices */
GList *devices;
/* probed devices */
GList *devices;
/* signals */
void (*open) (GstElement *element,
const gchar *device);
void (*close) (GstElement *element,
const gchar *device);
/* actions */
gboolean (*get_attribute) (GstElement *element,
const gchar *attr_name,
int *value);
gboolean (*set_attribute) (GstElement *element,
const gchar *attr_name,
const int value);
};
GType gst_v4l2element_get_type(void);
GType gst_v4l2element_get_type (void);
G_END_DECLS
#endif /* __GST_V4L2ELEMENT_H__ */

1062
sys/v4l2/gstv4l2src.c
View file

File diff suppressed because it is too large Load diff

123
sys/v4l2/gstv4l2src.h
View file

@ -1,5 +1,8 @@
/* G-Streamer Video4linux2 video-capture plugin
* Copyright (C) 2002 Ronald Bultje <rbultje@ronald.bitfreak.net>
/* GStreamer
*
* gstv4l2src.h: BT8x8/V4L2 video source element
*
* Copyright (C) 2001-2002 Ronald Bultje <rbultje@ronald.bitfreak.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
@ -20,6 +23,7 @@
#ifndef __GST_V4L2SRC_H__
#define __GST_V4L2SRC_H__
#include <gstv4l2element.h>
GST_DEBUG_CATEGORY_EXTERN (v4l2src_debug);
@ -27,83 +31,86 @@ GST_DEBUG_CATEGORY_EXTERN (v4l2src_debug);
#define GST_V4L2_MAX_BUFFERS 16
#define GST_V4L2_MIN_BUFFERS 2
#define GST_TYPE_V4L2SRC \
(gst_v4l2src_get_type())
#define GST_V4L2SRC(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_V4L2SRC,GstV4l2Src))
#define GST_V4L2SRC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_V4L2SRC,GstV4l2SrcClass))
#define GST_IS_V4L2SRC(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_V4L2SRC))
#define GST_IS_V4L2SRC_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_V4L2SRC))
G_BEGIN_DECLS
#define GST_TYPE_V4L2SRC \
(gst_v4l2src_get_type())
#define GST_V4L2SRC(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_V4L2SRC,GstV4l2Src))
#define GST_V4L2SRC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_V4L2SRC,GstV4l2SrcClass))
#define GST_IS_V4L2SRC(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_V4L2SRC))
#define GST_IS_V4L2SRC_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_V4L2SRC))
typedef struct _GstV4l2BufferPool GstV4l2BufferPool;
typedef struct _GstV4l2Buffer GstV4l2Buffer;
typedef struct _GstV4l2Src GstV4l2Src;
typedef struct _GstV4l2SrcClass GstV4l2SrcClass;
typedef struct _GstV4l2BufferPool GstV4l2BufferPool;
typedef struct _GstV4l2Buffer GstV4l2Buffer;
typedef struct _GstV4l2Src GstV4l2Src;
typedef struct _GstV4l2SrcClass GstV4l2SrcClass;
/* global info */
struct _GstV4l2BufferPool {
GstAtomicInt refcount; /* number of users: 1 for every buffer, 1 for element */
gint video_fd;
guint buffer_count;
GstV4l2Buffer * buffers;
gint refcount; /* number of users: 1 for every buffer, 1 for element */
gint video_fd;
guint buffer_count;
GstV4l2Buffer * buffers;
};
struct _GstV4l2Buffer {
struct v4l2_buffer buffer;
guint8 * start;
guint length;
GstAtomicInt refcount; /* add 1 if in use by element, add 1 if in use by GstBuffer */
GstV4l2BufferPool * pool;
struct v4l2_buffer buffer;
guint8 * start;
guint length;
gint refcount; /* add 1 if in use by element, add 1 if in use by GstBuffer */
GstV4l2BufferPool * pool;
};
struct _GstV4l2Src {
GstV4l2Element v4l2element;
enum
{
QUEUE_STATE_ERROR = -1,
QUEUE_STATE_READY_FOR_QUEUE, /* the frame is ready to be queued for capture */
QUEUE_STATE_QUEUED, /* the frame is queued for capture */
QUEUE_STATE_SYNCED /* the frame is captured */
};
/* pads */
GstPad *srcpad;
/* internal lists */
GSList *formats; /* list of available capture formats */
struct _GstV4l2Src
{
GstV4l2Element v4l2element;
/* buffers */
GstV4l2BufferPool *pool;
/* pads */
GstPad *srcpad;
struct v4l2_requestbuffers breq;
struct v4l2_format format;
/* internal lists */
GSList *formats; /* list of available capture formats */
/* True if we want to stop */
gboolean quit, is_capturing;
/* buffers */
GstV4l2BufferPool *pool;
/* A/V sync... frame counter and internal cache */
gulong handled;
gint need_writes;
GstBuffer *cached_buffer;
gulong last_seq;
struct v4l2_requestbuffers breq;
struct v4l2_format format;
/* clock */
GstClock *clock;
/* time to substract from clock time to get back to timestamp */
GstClockTime substract_time;
/* True if we want to stop */
gboolean quit, is_capturing;
/* how are we going to push buffers? */
gboolean use_fixed_fps;
gint offset;
/* how are we going to push buffers? */
gboolean use_fixed_fps;
};
struct _GstV4l2SrcClass {
GstV4l2ElementClass parent_class;
void (*frame_capture) (GObject *object);
void (*frame_drop) (GObject *object);
void (*frame_insert) (GObject *object);
void (*frame_lost) (GObject *object,
gint num_lost);
struct _GstV4l2SrcClass
{
GstV4l2ElementClass parent_class;
};
GType gst_v4l2src_get_type(void);
GType gst_v4l2src_get_type (void);
G_END_DECLS
#endif /* __GST_V4L2SRC_H__ */

22
sys/v4l2/gstv4l2tuner.c
View file

@ -24,7 +24,6 @@
#endif
#include <gst/gst.h>
#include <gst/tuner/tuner.h>
#include "gstv4l2tuner.h"
#include "gstv4l2element.h"
@ -156,13 +155,8 @@ gst_v4l2_tuner_interface_init (GstTunerClass * klass)
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);
}
@ -172,7 +166,7 @@ gst_v4l2_tuner_contains_channel (GstV4l2Element * v4l2element,
{
const GList *item;
for (item = v4l2element->channels; item != NULL; item = item->next)
for (item = v4l2element->inputs; item != NULL; item = item->next)
if (item->data == v4l2channel)
return TRUE;
@ -183,7 +177,7 @@ static const GList *
gst_v4l2_tuner_list_channels (GstTuner * mixer)
{
/* ... or output, if we're a sink... */
return GST_V4L2ELEMENT (mixer)->channels;
return GST_V4L2ELEMENT (mixer)->inputs;
}
static void
@ -201,7 +195,7 @@ gst_v4l2_tuner_set_channel (GstTuner * mixer, GstTunerChannel * channel)
gst_v4l2_set_output (v4l2element, v4l2channel->index) :
gst_v4l2_set_input (v4l2element, v4l2channel->index)) {
gst_tuner_channel_changed (mixer, channel);
g_object_notify (G_OBJECT (v4l2element), "channel");
g_object_notify (G_OBJECT (v4l2element), "input");
}
}
@ -221,7 +215,7 @@ gst_v4l2_tuner_get_channel (GstTuner * mixer)
else
gst_v4l2_get_input (v4l2element, &channel);
for (item = v4l2element->channels; item != NULL; item = item->next) {
for (item = v4l2element->inputs; item != NULL; item = item->next) {
if (channel == GST_V4L2_TUNER_CHANNEL (item->data)->index)
return (GstTunerChannel *) item->data;
}
@ -235,7 +229,7 @@ gst_v4l2_tuner_contains_norm (GstV4l2Element * v4l2element,
{
const GList *item;
for (item = v4l2element->norms; item != NULL; item = item->next)
for (item = v4l2element->stds; item != NULL; item = item->next)
if (item->data == v4l2norm)
return TRUE;
@ -245,7 +239,7 @@ gst_v4l2_tuner_contains_norm (GstV4l2Element * v4l2element,
static const GList *
gst_v4l2_tuner_list_norms (GstTuner * mixer)
{
return GST_V4L2ELEMENT (mixer)->norms;
return GST_V4L2ELEMENT (mixer)->stds;
}
static void
@ -260,7 +254,7 @@ gst_v4l2_tuner_set_norm (GstTuner * mixer, GstTunerNorm * norm)
if (gst_v4l2_set_norm (v4l2element, v4l2norm->index)) {
gst_tuner_norm_changed (mixer, norm);
g_object_notify (G_OBJECT (v4l2element), "norm");
g_object_notify (G_OBJECT (v4l2element), "std");
}
}
@ -276,7 +270,7 @@ gst_v4l2_tuner_get_norm (GstTuner * mixer)
gst_v4l2_get_norm (v4l2element, &norm);
for (item = v4l2element->norms; item != NULL; item = item->next) {
for (item = v4l2element->stds; item != NULL; item = item->next) {
if (norm == GST_V4L2_TUNER_NORM (item->data)->index)
return (GstTunerNorm *) item->data;
}

16
sys/v4l2/gstv4l2tuner.h
View file

@ -23,7 +23,7 @@
#define __GST_V4L2_TUNER_H__
#include <gst/gst.h>
#include <gst/tuner/tuner.h>
#include <gst/interfaces/tuner.h>
#include "gstv4l2element.h"
@ -33,10 +33,10 @@ G_BEGIN_DECLS
(gst_v4l2_tuner_channel_get_type ())
#define GST_V4L2_TUNER_CHANNEL(obj) \
(G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_V4L2_TUNER_CHANNEL, \
GstV4l2TunerChannel))
GstV4l2TunerChannel))
#define GST_V4L2_TUNER_CHANNEL_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_V4L2_TUNER_CHANNEL, \
GstV4l2TunerChannelClass))
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) \
@ -58,10 +58,10 @@ typedef struct _GstV4l2TunerChannelClass {
(gst_v4l2_tuner_norm_get_type ())
#define GST_V4L2_TUNER_NORM(obj) \
(G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_V4L2_TUNER_NORM, \
GstV4l2TunerNorm))
GstV4l2TunerNorm))
#define GST_V4L2_TUNER_NORM_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_V4L2_TUNER_NORM, \
GstV4l2TunerNormClass))
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) \
@ -77,9 +77,9 @@ typedef struct _GstV4l2TunerNormClass {
GstTunerNormClass parent;
} GstV4l2TunerNormClass;
GType gst_v4l2_tuner_channel_get_type (void);
GType gst_v4l2_tuner_norm_get_type (void);
GType gst_v4l2_tuner_channel_get_type (void);
GType gst_v4l2_tuner_norm_get_type (void);
void gst_v4l2_tuner_interface_init (GstTunerClass *klass);
void gst_v4l2_tuner_interface_init (GstTunerClass *klass);
#endif /* __GST_V4L2_TUNER_H__ */

38
sys/v4l2/gstv4l2xoverlay.c
View file

@ -25,7 +25,6 @@
#include <string.h>
#include <gst/gst.h>
#include <gst/xoverlay/xoverlay.h>
#include <X11/X.h>
#include <X11/Xlib.h>
#include <X11/extensions/Xv.h>
@ -59,13 +58,14 @@ gst_v4l2_xoverlay_interface_init (GstXOverlayClass * klass)
"V4L2 XOverlay interface debugging");
}
void
static void
gst_v4l2_xoverlay_open (GstV4l2Element * v4l2element)
{
struct stat s;
GstV4l2Xv *v4l2xv;
const gchar *name = g_getenv ("DISPLAY");
int ver, rel, req, ev, err, anum, i, id = 0, first_id = 0, min;
unsigned int ver, rel, req, ev, err, anum;
int i, id = 0, first_id = 0, min;
XvAdaptorInfo *ai;
Display *dpy;
@ -75,6 +75,13 @@ gst_v4l2_xoverlay_open (GstV4l2Element * v4l2element)
return;
}
/* First let's check that XVideo extension is available */
if (!XQueryExtension (dpy, "XVideo", &i, &i, &i)) {
GST_WARNING ("Xv extension not available - no overlay");
XCloseDisplay (dpy);
return;
}
/* find port that belongs to this device */
if (XvQueryExtension (dpy, &ver, &rel, &req, &ev, &err) != Success) {
GST_WARNING ("Xv extension not supported - no overlay");
@ -93,7 +100,7 @@ gst_v4l2_xoverlay_open (GstV4l2Element * v4l2element)
}
min = s.st_rdev & 0xff;
for (i = 0; i < anum; i++) {
if (!strcmp (ai[i].name, "video4linux")) {
if (!strcmp (ai[i].name, "video4linux2")) {
if (first_id == 0)
first_id = ai[i].base_id;
@ -123,7 +130,7 @@ gst_v4l2_xoverlay_open (GstV4l2Element * v4l2element)
}
}
void
static void
gst_v4l2_xoverlay_close (GstV4l2Element * v4l2element)
{
GstV4l2Xv *v4l2xv = v4l2element->xv;
@ -143,6 +150,20 @@ gst_v4l2_xoverlay_close (GstV4l2Element * v4l2element)
v4l2element->xv = NULL;
}
void
gst_v4l2_xoverlay_start (GstV4l2Element * v4l2element)
{
if (v4l2element->xwindow_id) {
gst_v4l2_xoverlay_open (v4l2element);
}
}
void
gst_v4l2_xoverlay_stop (GstV4l2Element * v4l2element)
{
gst_v4l2_xoverlay_close (v4l2element);
}
static gboolean
idle_refresh (gpointer data)
{
@ -170,12 +191,17 @@ static void
gst_v4l2_xoverlay_set_xwindow_id (GstXOverlay * overlay, XID xwindow_id)
{
GstV4l2Element *v4l2element = GST_V4L2ELEMENT (overlay);
GstV4l2Xv *v4l2xv = v4l2element->xv;
GstV4l2Xv *v4l2xv;
XWindowAttributes attr;
gboolean change = (v4l2element->xwindow_id != xwindow_id);
GST_LOG_OBJECT (v4l2element, "Setting XID to %lx", (gulong) xwindow_id);
if (!v4l2element->xv && GST_V4L2_IS_OPEN (v4l2element))
gst_v4l2_xoverlay_open (v4l2element);
v4l2xv = v4l2element->xv;
if (v4l2xv)
g_mutex_lock (v4l2xv->mutex);

8
sys/v4l2/gstv4l2xoverlay.h
View file

@ -23,15 +23,15 @@
#define __GST_V4L2_X_OVERLAY_H__
#include <gst/gst.h>
#include <gst/xoverlay/xoverlay.h>
#include <gst/interfaces/xoverlay.h>
#include "gstv4l2element.h"
G_BEGIN_DECLS
void gst_v4l2_xoverlay_interface_init (GstXOverlayClass *klass);
void gst_v4l2_xoverlay_interface_init (GstXOverlayClass *klass);
void gst_v4l2_xoverlay_open (GstV4l2Element *v4l2element);
void gst_v4l2_xoverlay_close (GstV4l2Element *v4l2element);
void gst_v4l2_xoverlay_start (GstV4l2Element *v4l2element);
void gst_v4l2_xoverlay_stop (GstV4l2Element *v4l2element);
#endif /* __GST_V4L2_X_OVERLAY_H__ */

242
sys/v4l2/v4l2_calls.c
View file

@ -36,11 +36,8 @@
#include "gstv4l2src.h"
#define DEBUG(format, args...) \
GST_DEBUG_OBJECT (\
GST_ELEMENT(v4l2element), \
"V4L2: " format, ##args)
GST_DEBUG_CATEGORY_EXTERN (v4l2_debug);
#define GST_CAT_DEFAULT v4l2_debug
/******************************************************
* gst_v4l2_get_capabilities():
@ -48,16 +45,16 @@
* return value: TRUE on success, FALSE on error
******************************************************/
static gboolean
gboolean
gst_v4l2_get_capabilities (GstV4l2Element * v4l2element)
{
DEBUG ("getting capabilities");
GST_V4L2_CHECK_OPEN (v4l2element);
GST_DEBUG ("getting capabilities");
if (!GST_V4L2_IS_OPEN (v4l2element))
return FALSE;
if (ioctl (v4l2element->video_fd, VIDIOC_QUERYCAP, &(v4l2element->vcap)) < 0) {
GST_ELEMENT_ERROR (v4l2element, RESOURCE, SETTINGS, (NULL),
("Error getting %s capabilities: %s",
v4l2element->device, g_strerror (errno)));
GST_ERROR_OBJECT (v4l2element, "Error getting %s capabilities: %s",
v4l2element->videodev, g_strerror (errno));
return FALSE;
}
@ -75,16 +72,11 @@ 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_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++) {
@ -99,14 +91,14 @@ gst_v4l2_fill_lists (GstV4l2Element * v4l2element)
else {
GST_ELEMENT_ERROR (v4l2element, RESOURCE, SETTINGS, (NULL),
("Failed to get %d in input enumeration for %s: %s",
n, v4l2element->device, g_strerror (errno)));
n, v4l2element->videodev, g_strerror (errno)));
return FALSE;
}
}
v4l2channel = g_object_new (GST_TYPE_V4L2_TUNER_CHANNEL, NULL);
channel = GST_TUNER_CHANNEL (v4l2channel);
channel->label = g_strdup (input.name);
channel->label = g_strdup ((const gchar *) input.name);
channel->flags = GST_TUNER_CHANNEL_INPUT;
v4l2channel->index = n;
if (input.type == V4L2_INPUT_TYPE_TUNER) {
@ -119,7 +111,7 @@ gst_v4l2_fill_lists (GstV4l2Element * v4l2element)
if (ioctl (v4l2element->video_fd, VIDIOC_G_TUNER, &vtun) < 0) {
GST_ELEMENT_ERROR (v4l2element, RESOURCE, SETTINGS, (NULL),
("Failed to get tuner %d settings on %s: %s",
input.tuner, v4l2element->device, g_strerror (errno)));
input.tuner, v4l2element->videodev, g_strerror (errno)));
g_object_unref (G_OBJECT (channel));
return FALSE;
}
@ -138,8 +130,8 @@ gst_v4l2_fill_lists (GstV4l2Element * v4l2element)
channel->flags |= GST_TUNER_CHANNEL_AUDIO;
}
v4l2element->channels =
g_list_append (v4l2element->channels, (gpointer) channel);
v4l2element->inputs =
g_list_append (v4l2element->inputs, (gpointer) channel);
}
} else {
/* outputs */
@ -155,14 +147,14 @@ gst_v4l2_fill_lists (GstV4l2Element * v4l2element)
else {
GST_ELEMENT_ERROR (v4l2element, RESOURCE, SETTINGS, (NULL),
("Failed to get %d in output enumeration for %s: %s",
n, v4l2element->device, g_strerror (errno)));
n, v4l2element->videodev, g_strerror (errno)));
return FALSE;
}
}
v4l2channel = g_object_new (GST_TYPE_V4L2_TUNER_CHANNEL, NULL);
channel = GST_TUNER_CHANNEL (v4l2channel);
channel->label = g_strdup (output.name);
channel->label = g_strdup ((const gchar *) output.name);
channel->flags = GST_TUNER_CHANNEL_OUTPUT;
v4l2channel->index = n;
if (output.audioset) {
@ -173,8 +165,8 @@ gst_v4l2_fill_lists (GstV4l2Element * v4l2element)
channel->flags |= GST_TUNER_CHANNEL_AUDIO;
}
v4l2element->channels =
g_list_append (v4l2element->channels, (gpointer) channel);
v4l2element->inputs =
g_list_append (v4l2element->inputs, (gpointer) channel);
}
}
@ -191,19 +183,19 @@ gst_v4l2_fill_lists (GstV4l2Element * v4l2element)
else {
GST_ELEMENT_ERROR (v4l2element, RESOURCE, SETTINGS, (NULL),
("Failed to get %d in norm enumeration for %s: %s",
n, v4l2element->device, g_strerror (errno)));
n, v4l2element->videodev, g_strerror (errno)));
return FALSE;
}
}
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;
norm->label = g_strdup ((const gchar *) standard.name);
gst_value_set_fraction (&norm->framerate,
standard.frameperiod.denominator, standard.frameperiod.numerator);
v4l2norm->index = standard.id;
v4l2element->norms = g_list_append (v4l2element->norms, (gpointer) norm);
v4l2element->stds = g_list_append (v4l2element->stds, (gpointer) norm);
}
/* and lastly, controls+menus (if appropriate) */
@ -226,7 +218,7 @@ gst_v4l2_fill_lists (GstV4l2Element * v4l2element)
} else {
GST_ELEMENT_ERROR (v4l2element, RESOURCE, SETTINGS, (NULL),
("Failed to get %d in control enumeration for %s: %s",
n, v4l2element->device, g_strerror (errno)));
n, v4l2element->videodev, g_strerror (errno)));
return FALSE;
}
}
@ -250,7 +242,7 @@ gst_v4l2_fill_lists (GstV4l2Element * v4l2element)
/* we only handle these for now */
break;
default:
DEBUG ("ControlID %s (%d) unhandled, FIXME", control.name, n);
GST_DEBUG ("ControlID %s (%d) unhandled, FIXME", control.name, n);
control.id++;
break;
}
@ -259,7 +251,7 @@ gst_v4l2_fill_lists (GstV4l2Element * v4l2element)
v4l2channel = g_object_new (GST_TYPE_V4L2_COLOR_BALANCE_CHANNEL, NULL);
channel = GST_COLOR_BALANCE_CHANNEL (v4l2channel);
channel->label = g_strdup (control.name);
channel->label = g_strdup ((const gchar *) control.name);
v4l2channel->index = n;
#if 0
@ -276,7 +268,7 @@ gst_v4l2_fill_lists (GstV4l2Element * v4l2element)
else {
GST_ELEMENT_ERROR (v4l2element, RESOURCE, SETTINGS, (NULL),
("Failed to get %d in menu enumeration for %s: %s",
n, v4l2element->device, g_strerror (errno)));
n, v4l2element->videodev, g_strerror (errno)));
return FALSE;
}
}
@ -313,15 +305,15 @@ gst_v4l2_fill_lists (GstV4l2Element * v4l2element)
static void
gst_v4l2_empty_lists (GstV4l2Element * v4l2element)
{
DEBUG ("deleting enumerations");
GST_DEBUG ("deleting enumerations");
g_list_foreach (v4l2element->channels, (GFunc) g_object_unref, NULL);
g_list_free (v4l2element->channels);
v4l2element->channels = NULL;
g_list_foreach (v4l2element->inputs, (GFunc) g_object_unref, NULL);
g_list_free (v4l2element->inputs);
v4l2element->inputs = NULL;
g_list_foreach (v4l2element->norms, (GFunc) g_object_unref, NULL);
g_list_free (v4l2element->norms);
v4l2element->norms = NULL;
g_list_foreach (v4l2element->stds, (GFunc) g_object_unref, NULL);
g_list_free (v4l2element->stds);
v4l2element->stds = NULL;
g_list_foreach (v4l2element->colors, (GFunc) g_object_unref, NULL);
g_list_free (v4l2element->colors);
@ -337,27 +329,27 @@ gst_v4l2_set_defaults (GstV4l2Element * v4l2element)
GstTunerChannel *channel = NULL;
GstTuner *tuner = GST_TUNER (v4l2element);
if (v4l2element->norm)
norm = gst_tuner_find_norm_by_name (tuner, v4l2element->norm);
if (v4l2element->std)
norm = gst_tuner_find_norm_by_name (tuner, v4l2element->std);
if (norm) {
gst_tuner_set_norm (tuner, norm);
} else {
norm = GST_TUNER_NORM (gst_tuner_get_norm (GST_TUNER (v4l2element)));
v4l2element->norm = g_strdup (norm->label);
v4l2element->std = g_strdup (norm->label);
gst_tuner_norm_changed (tuner, norm);
g_object_notify (G_OBJECT (v4l2element), "norm");
g_object_notify (G_OBJECT (v4l2element), "std");
}
if (v4l2element->channel)
channel = gst_tuner_find_channel_by_name (tuner, v4l2element->channel);
if (v4l2element->input)
channel = gst_tuner_find_channel_by_name (tuner, v4l2element->input);
if (channel) {
gst_tuner_set_channel (tuner, channel);
} else {
channel =
GST_TUNER_CHANNEL (gst_tuner_get_channel (GST_TUNER (v4l2element)));
v4l2element->channel = g_strdup (channel->label);
v4l2element->input = g_strdup (channel->label);
gst_tuner_channel_changed (tuner, channel);
g_object_notify (G_OBJECT (v4l2element), "channel");
g_object_notify (G_OBJECT (v4l2element), "input");
}
if (GST_TUNER_CHANNEL_HAS_FLAG (channel, GST_TUNER_CHANNEL_FREQUENCY)) {
@ -378,27 +370,27 @@ gst_v4l2_set_defaults (GstV4l2Element * v4l2element)
/******************************************************
* gst_v4l2_open():
* open the video device (v4l2element->device)
* open the video device (v4l2element->videodev)
* return value: TRUE on success, FALSE on error
******************************************************/
gboolean
gst_v4l2_open (GstV4l2Element * v4l2element)
{
DEBUG ("Trying to open device %s", v4l2element->device);
GST_DEBUG ("Trying to open device %s", v4l2element->videodev);
GST_V4L2_CHECK_NOT_OPEN (v4l2element);
GST_V4L2_CHECK_NOT_ACTIVE (v4l2element);
/* be sure we have a device */
if (!v4l2element->device)
v4l2element->device = g_strdup ("/dev/video");
if (!v4l2element->videodev)
v4l2element->videodev = g_strdup ("/dev/video");
/* open the device */
v4l2element->video_fd = open (v4l2element->device, O_RDWR);
v4l2element->video_fd = open (v4l2element->videodev, O_RDWR);
if (!GST_V4L2_IS_OPEN (v4l2element)) {
GST_ELEMENT_ERROR (v4l2element, RESOURCE, OPEN_READ_WRITE,
(_("Could not open device \"%s\" for reading and writing."),
v4l2element->device), GST_ERROR_SYSTEM);
v4l2element->videodev), GST_ERROR_SYSTEM);
goto error;
}
@ -411,7 +403,7 @@ gst_v4l2_open (GstV4l2Element * v4l2element)
if (GST_IS_V4L2SRC (v4l2element) &&
!(v4l2element->vcap.capabilities & V4L2_CAP_VIDEO_CAPTURE)) {
GST_ELEMENT_ERROR (v4l2element, RESOURCE, NOT_FOUND,
(_("Device \"%s\" is not a capture device."), v4l2element->device),
(_("Device \"%s\" is not a capture device."), v4l2element->videodev),
("Capabilities: 0x%x", v4l2element->vcap.capabilities));
goto error;
}
@ -424,7 +416,7 @@ gst_v4l2_open (GstV4l2Element * v4l2element)
gst_v4l2_set_defaults (v4l2element);
GST_INFO_OBJECT (v4l2element, "Opened device '%s' (%s) successfully\n",
v4l2element->vcap.card, v4l2element->device);
v4l2element->vcap.card, v4l2element->videodev);
return TRUE;
@ -450,7 +442,7 @@ error:
gboolean
gst_v4l2_close (GstV4l2Element * v4l2element)
{
DEBUG ("Trying to close %s", v4l2element->device);
GST_DEBUG ("Trying to close %s", v4l2element->videodev);
GST_V4L2_CHECK_OPEN (v4l2element);
GST_V4L2_CHECK_NOT_ACTIVE (v4l2element);
@ -474,13 +466,14 @@ gst_v4l2_close (GstV4l2Element * v4l2element)
gboolean
gst_v4l2_get_norm (GstV4l2Element * v4l2element, v4l2_std_id * norm)
{
DEBUG ("getting norm");
GST_V4L2_CHECK_OPEN (v4l2element);
GST_DEBUG ("getting norm");
if (!GST_V4L2_IS_OPEN (v4l2element))
return FALSE;
if (ioctl (v4l2element->video_fd, VIDIOC_G_STD, norm) < 0) {
GST_ELEMENT_ERROR (v4l2element, RESOURCE, SETTINGS, (NULL),
("Failed to get the current norm for device %s: %s",
v4l2element->device, g_strerror (errno)));
GST_WARNING_OBJECT (v4l2element,
"Failed to get the current norm for device %s: %s",
v4l2element->videodev, g_strerror (errno));
return FALSE;
}
@ -497,14 +490,16 @@ gst_v4l2_get_norm (GstV4l2Element * v4l2element, v4l2_std_id * norm)
gboolean
gst_v4l2_set_norm (GstV4l2Element * v4l2element, v4l2_std_id norm)
{
DEBUG ("trying to set norm to %llx", norm);
GST_V4L2_CHECK_OPEN (v4l2element);
GST_V4L2_CHECK_NOT_ACTIVE (v4l2element);
GST_DEBUG ("trying to set norm to %llx", norm);
if (!GST_V4L2_IS_OPEN (v4l2element))
return FALSE;
if (!GST_V4L2_IS_ACTIVE (v4l2element))
return FALSE;
if (ioctl (v4l2element->video_fd, VIDIOC_S_STD, &norm) < 0) {
GST_ELEMENT_ERROR (v4l2element, RESOURCE, SETTINGS, (NULL),
("Failed to set norm 0x%llx for device %s: %s",
norm, v4l2element->device, g_strerror (errno)));
GST_WARNING_OBJECT (v4l2element,
"Failed to set norm 0x%llx for device %s: %s", norm,
v4l2element->videodev, g_strerror (errno));
return FALSE;
}
@ -523,13 +518,14 @@ gst_v4l2_get_input (GstV4l2Element * v4l2element, gint * input)
{
gint n;
DEBUG ("trying to get input");
GST_V4L2_CHECK_OPEN (v4l2element);
GST_DEBUG ("trying to get input");
if (!GST_V4L2_IS_OPEN (v4l2element))
return FALSE;
if (ioctl (v4l2element->video_fd, VIDIOC_G_INPUT, &n) < 0) {
GST_ELEMENT_ERROR (v4l2element, RESOURCE, SETTINGS, (NULL),
("Failed to get current input on device %s: %s",
v4l2element->device, g_strerror (errno)));
GST_WARNING_OBJECT (v4l2element,
"Failed to get current input on device %s: %s", v4l2element->videodev,
g_strerror (errno));
return FALSE;
}
@ -548,14 +544,15 @@ gst_v4l2_get_input (GstV4l2Element * v4l2element, gint * input)
gboolean
gst_v4l2_set_input (GstV4l2Element * v4l2element, gint input)
{
DEBUG ("trying to set input to %d", input);
GST_V4L2_CHECK_OPEN (v4l2element);
GST_V4L2_CHECK_NOT_ACTIVE (v4l2element);
GST_DEBUG ("trying to set input to %d", input);
if (!GST_V4L2_IS_OPEN (v4l2element))
return FALSE;
if (!GST_V4L2_IS_ACTIVE (v4l2element))
return FALSE;
if (ioctl (v4l2element->video_fd, VIDIOC_S_INPUT, &input) < 0) {
GST_ELEMENT_ERROR (v4l2element, RESOURCE, SETTINGS, (NULL),
("Failed to set input %d on device %s: %s",
input, v4l2element->device, g_strerror (errno)));
GST_WARNING_OBJECT (v4l2element, "Failed to set input %d on device %s: %s",
input, v4l2element->videodev, g_strerror (errno));
return FALSE;
}
@ -574,13 +571,14 @@ gst_v4l2_get_output (GstV4l2Element * v4l2element, gint * output)
{
gint n;
DEBUG ("trying to get output");
GST_V4L2_CHECK_OPEN (v4l2element);
GST_DEBUG ("trying to get output");
if (!GST_V4L2_IS_OPEN (v4l2element))
return FALSE;
if (ioctl (v4l2element->video_fd, VIDIOC_G_OUTPUT, &n) < 0) {
GST_ELEMENT_ERROR (v4l2element, RESOURCE, SETTINGS, (NULL),
("Failed to get current output on device %s: %s",
v4l2element->device, g_strerror (errno)));
GST_WARNING_OBJECT (v4l2element,
"Failed to get current output on device %s: %s", v4l2element->videodev,
g_strerror (errno));
return FALSE;
}
@ -599,14 +597,16 @@ gst_v4l2_get_output (GstV4l2Element * v4l2element, gint * output)
gboolean
gst_v4l2_set_output (GstV4l2Element * v4l2element, gint output)
{
DEBUG ("trying to set output to %d", output);
GST_V4L2_CHECK_OPEN (v4l2element);
GST_V4L2_CHECK_NOT_ACTIVE (v4l2element);
GST_DEBUG ("trying to set output to %d", output);
if (!GST_V4L2_IS_OPEN (v4l2element))
return FALSE;
if (!GST_V4L2_IS_ACTIVE (v4l2element))
return FALSE;
if (ioctl (v4l2element->video_fd, VIDIOC_S_OUTPUT, &output) < 0) {
GST_ELEMENT_ERROR (v4l2element, RESOURCE, SETTINGS, (NULL),
("Failed to set output %d on device %s: %s",
output, v4l2element->device, g_strerror (errno)));
GST_WARNING_OBJECT (v4l2element,
"Failed to set current output on device %s to %d: %s",
v4l2element->videodev, output, g_strerror (errno));
return FALSE;
}
@ -627,16 +627,17 @@ gst_v4l2_get_frequency (GstV4l2Element * v4l2element,
struct v4l2_frequency freq;
GstTunerChannel *channel;
DEBUG ("getting current tuner frequency");
GST_V4L2_CHECK_OPEN (v4l2element);
GST_DEBUG ("getting current tuner frequency");
if (!GST_V4L2_IS_OPEN (v4l2element))
return FALSE;
channel = gst_tuner_get_channel (GST_TUNER (v4l2element));
freq.tuner = tunernum;
if (ioctl (v4l2element->video_fd, VIDIOC_G_FREQUENCY, &freq) < 0) {
GST_ELEMENT_ERROR (v4l2element, RESOURCE, SETTINGS, (NULL),
("Failed to get current tuner frequency for device %s: %s",
v4l2element->device, g_strerror (errno)));
GST_WARNING_OBJECT (v4l2element,
"Failed to get current tuner frequency for device %s: %s",
v4l2element->videodev, g_strerror (errno));
return FALSE;
}
@ -659,9 +660,11 @@ gst_v4l2_set_frequency (GstV4l2Element * v4l2element,
struct v4l2_frequency freq;
GstTunerChannel *channel;
DEBUG ("setting current tuner frequency to %lu", frequency);
GST_V4L2_CHECK_OPEN (v4l2element);
GST_V4L2_CHECK_NOT_ACTIVE (v4l2element);
GST_DEBUG ("setting current tuner frequency to %lu", frequency);
if (!GST_V4L2_IS_OPEN (v4l2element))
return FALSE;
if (!GST_V4L2_IS_ACTIVE (v4l2element))
return FALSE;
channel = gst_tuner_get_channel (GST_TUNER (v4l2element));
@ -671,9 +674,9 @@ gst_v4l2_set_frequency (GstV4l2Element * v4l2element,
freq.frequency = frequency / channel->freq_multiplicator;
if (ioctl (v4l2element->video_fd, VIDIOC_S_FREQUENCY, &freq) < 0) {
GST_ELEMENT_ERROR (v4l2element, RESOURCE, SETTINGS, (NULL),
("Failed to set tuner frequency to %lu for device %s: %s",
frequency, v4l2element->device, g_strerror (errno)));
GST_WARNING_OBJECT (v4l2element,
"Failed to set current tuner frequency for device %s to %lu: %s",
v4l2element->videodev, frequency, g_strerror (errno));
return FALSE;
}
@ -693,14 +696,15 @@ gst_v4l2_signal_strength (GstV4l2Element * v4l2element,
{
struct v4l2_tuner tuner;
DEBUG ("trying to get signal strength");
GST_V4L2_CHECK_OPEN (v4l2element);
GST_DEBUG ("trying to get signal strength");
if (!GST_V4L2_IS_OPEN (v4l2element))
return FALSE;
tuner.index = tunernum;
if (ioctl (v4l2element->video_fd, VIDIOC_G_TUNER, &tuner) < 0) {
GST_ELEMENT_ERROR (v4l2element, RESOURCE, SETTINGS, (NULL),
("Failed to get signal strength for device %s: %s",
v4l2element->device, g_strerror (errno)));
GST_WARNING_OBJECT (v4l2element,
"Failed to get signal strength for device %s: %s",
v4l2element->videodev, g_strerror (errno));
return FALSE;
}
@ -722,16 +726,17 @@ gst_v4l2_get_attribute (GstV4l2Element * v4l2element,
{
struct v4l2_control control;
GST_V4L2_CHECK_OPEN (v4l2element);
if (!GST_V4L2_IS_OPEN (v4l2element))
return FALSE;
DEBUG ("getting value of attribute %d", attribute_num);
GST_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 (v4l2element, RESOURCE, SETTINGS, (NULL),
("Failed to get value for control %d on device %s: %s",
attribute_num, v4l2element->device, g_strerror (errno)));
GST_WARNING_OBJECT (v4l2element,
"Failed to get value for control %d on device %s: %s", attribute_num,
v4l2element->videodev, g_strerror (errno));
return FALSE;
}
@ -753,17 +758,18 @@ gst_v4l2_set_attribute (GstV4l2Element * v4l2element,
{
struct v4l2_control control;
GST_V4L2_CHECK_OPEN (v4l2element);
if (!GST_V4L2_IS_OPEN (v4l2element))
return FALSE;
DEBUG ("setting value of attribute %d to %d", attribute_num, value);
GST_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 (v4l2element, RESOURCE, SETTINGS, (NULL),
("Failed to set value %d for control %d on device %s: %s",
value, attribute_num, v4l2element->device, g_strerror (errno)));
GST_WARNING_OBJECT (v4l2element,
"Failed to set value %d for control %d on device %s: %s", value,
attribute_num, v4l2element->videodev, g_strerror (errno));
return FALSE;
}

110
sys/v4l2/v4l2_calls.h
View file

@ -26,96 +26,98 @@
/* simple check whether the device is open */
#define GST_V4L2_IS_OPEN(element) \
(element->video_fd > 0)
(GST_V4L2ELEMENT(element)->video_fd > 0)
/* check whether the device is 'active' */
#define GST_V4L2_IS_ACTIVE(element) \
(element->buffer != NULL)
(GST_V4L2ELEMENT(element)->buffer != NULL)
#define GST_V4L2_IS_OVERLAY(element) \
(element->vcap.capabilities & V4L2_CAP_VIDEO_OVERLAY)
(GST_V4L2ELEMENT(element)->vcap.capabilities & V4L2_CAP_VIDEO_OVERLAY)
/* checks whether the current v4lelement has already been open()'ed or not */
#define GST_V4L2_CHECK_OPEN(element) \
if (!GST_V4L2_IS_OPEN(element)) \
{ \
GST_ELEMENT_ERROR (element, RESOURCE, TOO_LAZY, \
#define GST_V4L2_CHECK_OPEN(element) \
if (!GST_V4L2_IS_OPEN(element)) \
{ \
GST_ELEMENT_ERROR (element, RESOURCE, TOO_LAZY, \
(_("Device is not open.")), (NULL)); \
return FALSE; \
return FALSE; \
}
/* checks whether the current v4lelement is close()'ed or whether it is still open */
#define GST_V4L2_CHECK_NOT_OPEN(element) \
if (GST_V4L2_IS_OPEN(element)) \
{ \
GST_ELEMENT_ERROR (element, RESOURCE, TOO_LAZY, \
#define GST_V4L2_CHECK_NOT_OPEN(element) \
if (GST_V4L2_IS_OPEN(element)) \
{ \
GST_ELEMENT_ERROR (element, RESOURCE, TOO_LAZY, \
(_("Device is open.")), (NULL)); \
return FALSE; \
return FALSE; \
}
/* checks whether the current v4lelement does video overlay */
#define GST_V4L2_CHECK_OVERLAY(element) \
if (!GST_V4L2_IS_OVERLAY(element)) \
{ \
#define GST_V4L2_CHECK_OVERLAY(element) \
if (!GST_V4L2_IS_OVERLAY(element)) \
{ \
GST_ELEMENT_ERROR (element, RESOURCE, TOO_LAZY, \
(NULL), ("Device cannot handle overlay")); \
return FALSE; \
return FALSE; \
}
/* checks whether we're in capture mode or not */
#define GST_V4L2_CHECK_ACTIVE(element) \
if (!GST_V4L2_IS_ACTIVE(element)) \
{ \
#define GST_V4L2_CHECK_ACTIVE(element) \
if (!GST_V4L2_IS_ACTIVE(element)) \
{ \
GST_ELEMENT_ERROR (element, RESOURCE, SETTINGS, \
(NULL), ("Device is not in streaming mode")); \
return FALSE; \
return FALSE; \
}
/* checks whether we're out of capture mode or not */
#define GST_V4L2_CHECK_NOT_ACTIVE(element) \
if (GST_V4L2_IS_ACTIVE(element)) \
{ \
#define GST_V4L2_CHECK_NOT_ACTIVE(element) \
if (GST_V4L2_IS_ACTIVE(element)) \
{ \
GST_ELEMENT_ERROR (element, RESOURCE, SETTINGS, \
(NULL), ("Device is in streaming mode")); \
return FALSE; \
return FALSE; \
}
/* open/close the device */
gboolean gst_v4l2_open (GstV4l2Element *v4l2element);
gboolean gst_v4l2_close (GstV4l2Element *v4l2element);
gboolean gst_v4l2_open (GstV4l2Element *v4l2element);
gboolean gst_v4l2_close (GstV4l2Element *v4l2element);
/* norm/input/output */
gboolean gst_v4l2_get_norm (GstV4l2Element *v4l2element,
v4l2_std_id *norm);
gboolean gst_v4l2_set_norm (GstV4l2Element *v4l2element,
v4l2_std_id norm);
gboolean gst_v4l2_get_input (GstV4l2Element *v4l2element,
gint *input);
gboolean gst_v4l2_set_input (GstV4l2Element *v4l2element,
gint input);
gboolean gst_v4l2_get_output (GstV4l2Element *v4l2element,
gint *output);
gboolean gst_v4l2_set_output (GstV4l2Element *v4l2element,
gint output);
gboolean gst_v4l2_get_norm (GstV4l2Element *v4l2element,
v4l2_std_id *norm);
gboolean gst_v4l2_set_norm (GstV4l2Element *v4l2element,
v4l2_std_id norm);
gboolean gst_v4l2_get_input (GstV4l2Element *v4l2element,
gint *input);
gboolean gst_v4l2_set_input (GstV4l2Element *v4l2element,
gint input);
gboolean gst_v4l2_get_output (GstV4l2Element *v4l2element,
gint *output);
gboolean gst_v4l2_set_output (GstV4l2Element *v4l2element,
gint output);
/* frequency control */
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,
gint tunernum,
gulong *signal);
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,
gint tunernum,
gulong *signal);
/* attribute control */
gboolean gst_v4l2_get_attribute (GstV4l2Element *v4l2element,
int attribute,
int *value);
gboolean gst_v4l2_set_attribute (GstV4l2Element *v4l2element,
int attribute,
const int value);
gboolean gst_v4l2_get_attribute (GstV4l2Element *v4l2element,
int attribute,
int *value);
gboolean gst_v4l2_set_attribute (GstV4l2Element *v4l2element,
int attribute,
const int value);
gboolean gst_v4l2_get_capabilities (GstV4l2Element * v4l2element);
#endif /* __V4L2_CALLS_H__ */

511
sys/v4l2/v4l2src_calls.c
View file

@ -33,6 +33,9 @@
#include <sys/time.h>
#include <unistd.h>
#include "gstv4l2tuner.h"
GST_DEBUG_CATEGORY_EXTERN (v4l2src_debug);
#define GST_CAT_DEFAULT v4l2src_debug
/* lalala... */
@ -40,9 +43,9 @@
#define GST_V4L2_SET_INACTIVE(element) (element)->buffer = NULL
#define DEBUG(format, args...) \
GST_CAT_DEBUG_OBJECT (\
v4l2src_debug, v4l2src, \
"V4L2SRC: " format, ##args)
GST_CAT_DEBUG_OBJECT (\
v4l2src_debug, v4l2src, \
"V4L2SRC: " format, ##args)
/* On some systems MAP_FAILED seems to be missing */
#ifndef MAP_FAILED
@ -76,12 +79,12 @@ gst_v4l2src_fill_format_list (GstV4l2Src * v4l2src)
} else {
GST_ELEMENT_ERROR (v4l2src, RESOURCE, SETTINGS, (NULL),
("failed to get number %d in pixelformat enumeration for %s: %s",
n, GST_V4L2ELEMENT (v4l2src)->device, g_strerror (errno)));
n, GST_V4L2ELEMENT (v4l2src)->videodev, g_strerror (errno)));
g_free (format);
return FALSE;
}
}
GST_LOG_OBJECT (v4l2src, "got format %" GST_FOURCC_FORMAT,
GST_LOG_OBJECT (v4l2src, "got format" GST_FOURCC_FORMAT,
GST_FOURCC_ARGS (format->pixelformat));
v4l2src->formats = g_slist_prepend (v4l2src->formats, format);
}
@ -122,7 +125,7 @@ gst_v4l2src_queue_frame (GstV4l2Src * v4l2src, guint i)
&v4l2src->pool->buffers[i].buffer) < 0) {
GST_ELEMENT_ERROR (v4l2src, RESOURCE, WRITE,
(_("Could not write to device \"%s\"."),
GST_V4L2ELEMENT (v4l2src)->device),
GST_V4L2ELEMENT (v4l2src)->videodev),
("Error queueing buffer %u on device %s", i, g_strerror (errno)));
return FALSE;
}
@ -145,13 +148,46 @@ gst_v4l2src_grab_frame (GstV4l2Src * v4l2src)
buffer.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
while (ioctl (GST_V4L2ELEMENT (v4l2src)->video_fd, VIDIOC_DQBUF, &buffer) < 0) {
/* if the sync() got interrupted, we can retry */
if (errno != EINTR) {
GST_ELEMENT_ERROR (v4l2src, RESOURCE, SYNC, (NULL),
("could not sync on a buffer on device %s: %s",
GST_V4L2ELEMENT (v4l2src)->device, g_strerror (errno)));
return -1;
switch (errno) {
case EAGAIN:
GST_ELEMENT_ERROR (v4l2src, RESOURCE, SYNC, (NULL),
("Non-blocking I/O has been selected using O_NONBLOCK and"
" no buffer was in the outgoing queue. device %s: %s",
GST_V4L2ELEMENT (v4l2src)->videodev, g_strerror (errno)));
break;
case EINVAL:
GST_ELEMENT_ERROR (v4l2src, RESOURCE, SYNC, (NULL),
("The buffer type is not supported, or the index is out of bounds,"
" or no buffers have been allocated yet, or the userptr"
" or length are invalid. device %s: %s",
GST_V4L2ELEMENT (v4l2src)->videodev, g_strerror (errno)));
break;
case ENOMEM:
GST_ELEMENT_ERROR (v4l2src, RESOURCE, SYNC, (NULL),
("isufficient memory to enqueue a user pointer buffer. device %s: %s",
GST_V4L2ELEMENT (v4l2src)->videodev, g_strerror (errno)));
break;
case EIO:
GST_ELEMENT_ERROR (v4l2src, RESOURCE, SYNC, (NULL),
("VIDIOC_DQBUF failed due to an internal error."
" Can also indicate temporary problems like signal loss."
" Note the driver might dequeue an (empty) buffer despite"
" returning an error, or even stop capturing."
" device %s: %s",
GST_V4L2ELEMENT (v4l2src)->videodev, g_strerror (errno)));
break;
case EINTR:
GST_ELEMENT_ERROR (v4l2src, RESOURCE, SYNC, (NULL),
("could not sync on a buffer on device %s: %s",
GST_V4L2ELEMENT (v4l2src)->videodev, g_strerror (errno)));
break;
default:
GST_DEBUG_OBJECT (v4l2src, "grab got interrupted");
break;
}
GST_DEBUG_OBJECT (v4l2src, "grab got interrupted");
return -1;
}
GST_LOG_OBJECT (v4l2src, "grabbed frame %d", buffer.index);
@ -178,7 +214,7 @@ gst_v4l2src_get_capture (GstV4l2Src * v4l2src)
&v4l2src->format) < 0) {
GST_ELEMENT_ERROR (v4l2src, RESOURCE, SETTINGS, (NULL),
("failed to get pixelformat for device %s: %s",
GST_V4L2ELEMENT (v4l2src)->device, g_strerror (errno)));
GST_V4L2ELEMENT (v4l2src)->videodev, g_strerror (errno)));
return FALSE;
}
@ -213,8 +249,8 @@ gst_v4l2src_set_capture (GstV4l2Src * v4l2src,
&v4l2src->format) < 0) {
GST_ELEMENT_ERROR (v4l2src, RESOURCE, SETTINGS, (NULL),
("failed to set pixelformat to %s @ %dx%d for device %s: %s",
fmt->description, width, height, GST_V4L2ELEMENT (v4l2src)->device,
g_strerror (errno)));
fmt->description, width, height,
GST_V4L2ELEMENT (v4l2src)->videodev, g_strerror (errno)));
return FALSE;
}
@ -249,72 +285,92 @@ gst_v4l2src_capture_init (GstV4l2Src * v4l2src)
v4l2src->breq.count = GST_V4L2_MIN_BUFFERS;
}
v4l2src->breq.type = v4l2src->format.type;
v4l2src->breq.memory = V4L2_MEMORY_MMAP;
if (ioctl (GST_V4L2ELEMENT (v4l2src)->video_fd, VIDIOC_REQBUFS,
&v4l2src->breq) < 0) {
GST_ELEMENT_ERROR (v4l2src, RESOURCE, READ,
(_("Could not get buffers from device \"%s\"."),
GST_V4L2ELEMENT (v4l2src)->device),
("error requesting %d buffers: %s", v4l2src->breq.count,
g_strerror (errno)));
return FALSE;
}
if (v4l2src->breq.count < GST_V4L2_MIN_BUFFERS) {
GST_ELEMENT_ERROR (v4l2src, RESOURCE, READ,
(_("Could not get enough buffers from device \"%s\"."),
GST_V4L2ELEMENT (v4l2src)->device),
("we received %d, we want at least %d", v4l2src->breq.count,
GST_V4L2_MIN_BUFFERS));
v4l2src->breq.count = buffers;
return FALSE;
}
if (v4l2src->breq.count != buffers)
g_object_notify (G_OBJECT (v4l2src), "num_buffers");
GST_INFO_OBJECT (v4l2src,
"Got %d buffers (%" GST_FOURCC_FORMAT ") of size %d KB\n",
v4l2src->breq.count,
GST_FOURCC_ARGS (v4l2src->format.fmt.pix.pixelformat),
v4l2src->format.fmt.pix.sizeimage / 1024);
/* Map the buffers */
v4l2src->pool = g_new (GstV4l2BufferPool, 1);
gst_atomic_int_init (&v4l2src->pool->refcount, 1);
v4l2src->pool->video_fd = GST_V4L2ELEMENT (v4l2src)->video_fd;
v4l2src->pool->buffer_count = v4l2src->breq.count;
v4l2src->pool->buffers = g_new0 (GstV4l2Buffer, v4l2src->breq.count);
for (n = 0; n < v4l2src->breq.count; n++) {
GstV4l2Buffer *buffer = &v4l2src->pool->buffers[n];
gst_atomic_int_init (&buffer->refcount, 1);
buffer->pool = v4l2src->pool;
buffer->buffer.index = n;
buffer->buffer.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
if (ioctl (GST_V4L2ELEMENT (v4l2src)->video_fd, VIDIOC_QUERYBUF,
&buffer->buffer) < 0) {
GST_ELEMENT_ERROR (v4l2src, RESOURCE, READ, (NULL),
("Could not get buffer properties of buffer %d: %s", n,
if (GST_V4L2ELEMENT (v4l2src)->vcap.capabilities & V4L2_CAP_STREAMING) {
v4l2src->breq.memory = V4L2_MEMORY_MMAP;
if (ioctl (GST_V4L2ELEMENT (v4l2src)->video_fd, VIDIOC_REQBUFS,
&v4l2src->breq) < 0) {
GST_ELEMENT_ERROR (v4l2src, RESOURCE, READ,
(_("Could not get buffers from device \"%s\"."),
GST_V4L2ELEMENT (v4l2src)->videodev),
("error requesting %d buffers: %s", v4l2src->breq.count,
g_strerror (errno)));
gst_v4l2src_capture_deinit (v4l2src);
return FALSE;
}
buffer->start =
mmap (0, buffer->buffer.length, PROT_READ | PROT_WRITE, MAP_SHARED,
GST_V4L2ELEMENT (v4l2src)->video_fd, buffer->buffer.m.offset);
if (buffer->start == MAP_FAILED) {
GST_ELEMENT_ERROR (v4l2src, RESOURCE, READ, (NULL),
("Could not mmap video buffer %d: %s", n, g_strerror (errno)));
buffer->start = 0;
gst_v4l2src_capture_deinit (v4l2src);
GST_LOG_OBJECT (v4l2src, "using default mmap method");
} else if (GST_V4L2ELEMENT (v4l2src)->vcap.capabilities & V4L2_CAP_READWRITE) {
v4l2src->breq.memory = 0;
GST_INFO_OBJECT (v4l2src, "using fallback read method");
} else {
GST_ELEMENT_ERROR (v4l2src, RESOURCE, READ,
(_("the driver of device \"%s\" is broken."),
GST_V4L2ELEMENT (v4l2src)->videodev),
("no supported read capability from %s",
GST_V4L2ELEMENT (v4l2src)->videodev));
return FALSE;
}
if (v4l2src->breq.memory > 0) {
if (v4l2src->breq.count < GST_V4L2_MIN_BUFFERS) {
GST_ELEMENT_ERROR (v4l2src, RESOURCE, READ,
(_("Could not get enough buffers from device \"%s\"."),
GST_V4L2ELEMENT (v4l2src)->videodev),
("we received %d, we want at least %d", v4l2src->breq.count,
GST_V4L2_MIN_BUFFERS));
v4l2src->breq.count = buffers;
return FALSE;
}
buffer->length = buffer->buffer.length;
if (!gst_v4l2src_queue_frame (v4l2src, n)) {
gst_v4l2src_capture_deinit (v4l2src);
return FALSE;
if (v4l2src->breq.count != buffers)
g_object_notify (G_OBJECT (v4l2src), "num_buffers");
GST_INFO_OBJECT (v4l2src,
"Got %d buffers (" GST_FOURCC_FORMAT ") of size %d KB\n",
v4l2src->breq.count,
GST_FOURCC_ARGS (v4l2src->format.fmt.pix.pixelformat),
v4l2src->format.fmt.pix.sizeimage / 1024);
/* Map the buffers */
GST_LOG_OBJECT (v4l2src, "initiating buffer pool");
v4l2src->pool = g_new (GstV4l2BufferPool, 1);
g_atomic_int_set (&v4l2src->pool->refcount, 1);
v4l2src->pool->video_fd = GST_V4L2ELEMENT (v4l2src)->video_fd;
v4l2src->pool->buffer_count = v4l2src->breq.count;
v4l2src->pool->buffers = g_new0 (GstV4l2Buffer, v4l2src->breq.count);
for (n = 0; n < v4l2src->breq.count; n++) {
GstV4l2Buffer *buffer = &v4l2src->pool->buffers[n];
g_atomic_int_set (&buffer->refcount, 1);
buffer->pool = v4l2src->pool;
buffer->buffer.index = n;
buffer->buffer.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
if (ioctl (GST_V4L2ELEMENT (v4l2src)->video_fd, VIDIOC_QUERYBUF,
&buffer->buffer) < 0) {
GST_ELEMENT_ERROR (v4l2src, RESOURCE, READ, (NULL),
("Could not get buffer properties of buffer %d: %s", n,
g_strerror (errno)));
gst_v4l2src_capture_deinit (v4l2src);
return FALSE;
}
buffer->start =
mmap (0, buffer->buffer.length, PROT_READ | PROT_WRITE, MAP_SHARED,
GST_V4L2ELEMENT (v4l2src)->video_fd, buffer->buffer.m.offset);
if (buffer->start == MAP_FAILED) {
GST_ELEMENT_ERROR (v4l2src, RESOURCE, READ, (NULL),
("Could not mmap video buffer %d: %s", n, g_strerror (errno)));
buffer->start = 0;
gst_v4l2src_capture_deinit (v4l2src);
return FALSE;
}
buffer->length = buffer->buffer.length;
if (!gst_v4l2src_queue_frame (v4l2src, n)) {
gst_v4l2src_capture_deinit (v4l2src);
return FALSE;
}
}
} else {
GST_LOG_OBJECT (v4l2src, "no buffer pool used");
v4l2src->pool = NULL;
}
GST_V4L2_SET_ACTIVE (GST_V4L2ELEMENT (v4l2src));
@ -338,17 +394,19 @@ gst_v4l2src_capture_start (GstV4l2Src * v4l2src)
GST_V4L2_CHECK_OPEN (GST_V4L2ELEMENT (v4l2src));
if (!GST_V4L2_IS_ACTIVE (GST_V4L2ELEMENT (v4l2src))) {
gst_pad_renegotiate (v4l2src->srcpad);
/* gst_pad_renegotiate (v4l2src->srcpad); FIX: is it still required in 0.10 */
}
GST_V4L2_CHECK_ACTIVE (GST_V4L2ELEMENT (v4l2src));
v4l2src->quit = FALSE;
if (ioctl (GST_V4L2ELEMENT (v4l2src)->video_fd, VIDIOC_STREAMON, &type) < 0) {
GST_ELEMENT_ERROR (v4l2src, RESOURCE, OPEN_READ, (NULL),
("Error starting streaming capture from device %s: %s",
GST_V4L2ELEMENT (v4l2src)->device, g_strerror (errno)));
return FALSE;
if (v4l2src->breq.memory != 0) {
if (ioctl (GST_V4L2ELEMENT (v4l2src)->video_fd, VIDIOC_STREAMON, &type) < 0) {
GST_ELEMENT_ERROR (v4l2src, RESOURCE, OPEN_READ, (NULL),
("Error starting streaming capture from device %s: %s",
GST_V4L2ELEMENT (v4l2src)->videodev, g_strerror (errno)));
return FALSE;
}
}
v4l2src->is_capturing = TRUE;
@ -372,13 +430,16 @@ gst_v4l2src_capture_stop (GstV4l2Src * v4l2src)
GST_V4L2_CHECK_OPEN (GST_V4L2ELEMENT (v4l2src));
GST_V4L2_CHECK_ACTIVE (GST_V4L2ELEMENT (v4l2src));
/* we actually need to sync on all queued buffers but not
* on the non-queued ones */
if (ioctl (GST_V4L2ELEMENT (v4l2src)->video_fd, VIDIOC_STREAMOFF, &type) < 0) {
GST_ELEMENT_ERROR (v4l2src, RESOURCE, CLOSE, (NULL),
("Error stopping streaming capture from device %s: %s",
GST_V4L2ELEMENT (v4l2src)->device, g_strerror (errno)));
return FALSE;
if (v4l2src->breq.memory != 0) {
/* we actually need to sync on all queued buffers but not
* on the non-queued ones */
if (ioctl (GST_V4L2ELEMENT (v4l2src)->video_fd, VIDIOC_STREAMOFF,
&type) < 0) {
GST_ELEMENT_ERROR (v4l2src, RESOURCE, CLOSE, (NULL),
("Error stopping streaming capture from device %s: %s",
GST_V4L2ELEMENT (v4l2src)->videodev, g_strerror (errno)));
return FALSE;
}
}
/* make an optional pending wait stop */
@ -394,16 +455,18 @@ gst_v4l2src_buffer_pool_free (GstV4l2BufferPool * pool, gboolean do_close)
guint i;
for (i = 0; i < pool->buffer_count; i++) {
gst_atomic_int_destroy (&pool->buffers[i].refcount);
g_atomic_int_set (&pool->buffers[i].refcount, 0);
munmap (pool->buffers[i].start, pool->buffers[i].length);
}
g_free (pool->buffers);
gst_atomic_int_destroy (&pool->refcount);
g_atomic_int_set (&pool->refcount, 0);
if (do_close)
close (pool->video_fd);
g_free (pool);
}
#if 0
void
gst_v4l2src_free_buffer (GstBuffer * buffer)
{
@ -411,18 +474,21 @@ gst_v4l2src_free_buffer (GstBuffer * buffer)
GST_LOG ("freeing buffer %p (nr. %d)", buffer, buf->buffer.index);
if (!gst_atomic_int_dec_and_test (&buf->refcount)) {
if (!g_atomic_int_dec_and_test (&buf->refcount)) {
/* we're still in use, add to queue again
note: this might fail because the device is already stopped (race) */
if (ioctl (buf->pool->video_fd, VIDIOC_QBUF, &buf->buffer) < 0)
GST_INFO ("readding to queue failed, assuming video device is stopped");
}
if (gst_atomic_int_dec_and_test (&buf->pool->refcount)) {
if (g_atomic_int_dec_and_test (&buf->pool->refcount)) {
/* we're last thing that used all this */
gst_v4l2src_buffer_pool_free (buf->pool, TRUE);
}
}
#endif
/******************************************************
* gst_v4l2src_capture_deinit():
* deinitialize the capture system
@ -432,31 +498,44 @@ gst_v4l2src_free_buffer (GstBuffer * buffer)
gboolean
gst_v4l2src_capture_deinit (GstV4l2Src * v4l2src)
{
gint i, dequeue = 0;
gint i;
gboolean try_reinit = FALSE;
GST_DEBUG_OBJECT (v4l2src, "deinitting capture system");
GST_V4L2_CHECK_OPEN (GST_V4L2ELEMENT (v4l2src));
GST_V4L2_CHECK_ACTIVE (GST_V4L2ELEMENT (v4l2src));
/* free the buffers */
for (i = 0; i < v4l2src->breq.count; i++) {
if (gst_atomic_int_dec_and_test (&v4l2src->pool->buffers[i].refcount))
dequeue++;
if (v4l2src->pool) {
/* free the buffers */
for (i = 0; i < v4l2src->breq.count; i++) {
if (g_atomic_int_dec_and_test (&v4l2src->pool->buffers[i].refcount)) {
if (ioctl (GST_V4L2ELEMENT (v4l2src)->video_fd, VIDIOC_DQBUF,
&v4l2src->pool->buffers[i].buffer) < 0)
GST_WARNING_OBJECT (v4l2src,
"Could not dequeue buffer on uninitialization: %s - will try reinit instead",
g_strerror (errno));
try_reinit = TRUE;
}
}
if (g_atomic_int_dec_and_test (&v4l2src->pool->refcount)) {
/* we're last thing that used all this */
gst_v4l2src_buffer_pool_free (v4l2src->pool, FALSE);
}
v4l2src->pool = NULL;
/* This is our second try to get the buffers dequeued.
* Since buffers are normally dequeued automatically when capturing is
* stopped, but may be enqueued before capturing has started, you get
* a problem when you abort before capturing started but have enqueued
* the buffers. We avoid that by starting/stopping capturing once so
* they get auto-dequeued.
*/
if (try_reinit) {
if (!gst_v4l2src_capture_start (v4l2src) ||
!gst_v4l2src_capture_stop (v4l2src))
return FALSE;
}
}
for (i = 0; i < dequeue; i++) {
struct v4l2_buffer buffer;
buffer.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
if (ioctl (GST_V4L2ELEMENT (v4l2src)->video_fd, VIDIOC_DQBUF, &buffer) < 0)
GST_WARNING_OBJECT (v4l2src,
"Could not dequeue buffer on uninitialization");
}
if (gst_atomic_int_dec_and_test (&v4l2src->pool->refcount)) {
/* we're last thing that used all this */
gst_v4l2src_buffer_pool_free (v4l2src->pool, FALSE);
}
v4l2src->pool = NULL;
GST_V4L2_SET_INACTIVE (GST_V4L2ELEMENT (v4l2src));
return TRUE;
@ -474,8 +553,7 @@ gst_v4l2src_get_size_limits (GstV4l2Src * v4l2src,
{
struct v4l2_format fmt;
GST_LOG_OBJECT (v4l2src,
"getting size limits with format %" GST_FOURCC_FORMAT,
GST_LOG_OBJECT (v4l2src, "getting size limits with format " GST_FOURCC_FORMAT,
GST_FOURCC_ARGS (format->pixelformat));
/* get size delimiters */
@ -511,3 +589,212 @@ gst_v4l2src_get_size_limits (GstV4l2Src * v4l2src,
return TRUE;
}
gboolean
gst_v4l2src_get_fps (GstV4l2Src * v4l2src, gint * fps_n, gint * fps_d)
{
v4l2_std_id std;
const GList *item;
if (!GST_V4L2_IS_OPEN (GST_V4L2ELEMENT (v4l2src)))
return FALSE;
if (!gst_v4l2_get_norm (GST_V4L2ELEMENT (v4l2src), &std))
return FALSE;
for (item = GST_V4L2ELEMENT (v4l2src)->stds; item != NULL; item = item->next) {
GstV4l2TunerNorm *v4l2norm = item->data;
if (v4l2norm->index == std) {
*fps_n =
gst_value_get_fraction_numerator (&GST_TUNER_NORM (v4l2norm)->
framerate);
*fps_d =
gst_value_get_fraction_denominator (&GST_TUNER_NORM (v4l2norm)->
framerate);
return TRUE;
}
}
return FALSE;
}
#if 0
/* get a list of possible framerates
* this is only done for webcams;
* other devices return NULL here.
* this function takes a LONG time to execute.
*/
GValue *
gst_v4l2src_get_fps_list (GstV4l2Src * v4l2src)
{
gint fps_index;
struct video_window *vwin = &GST_V4L2ELEMENT (v4l2src)->vwin;
GstV4l2Element *v4l2element = GST_V4L2ELEMENT (v4l2src);
/* check if we have vwin window properties giving a framerate,
* as is done for webcams
* See http://www.smcc.demon.nl/webcam/api.html
* which is used for the Philips and qce-ga drivers */
fps_index = (vwin->flags >> 16) & 0x3F; /* 6 bit index for framerate */
/* webcams have a non-zero fps_index */
if (fps_index == 0) {
GST_DEBUG_OBJECT (v4l2src, "fps_index is 0, no webcam");
return NULL;
}
GST_DEBUG_OBJECT (v4l2src, "fps_index is %d, so webcam", fps_index);
{
int i;
GValue *list = NULL;
GValue value = { 0 };
/* webcam detected, so try all framerates and return a list */
list = g_new0 (GValue, 1);
g_value_init (list, GST_TYPE_LIST);
/* index of 16 corresponds to 15 fps */
GST_DEBUG_OBJECT (v4l2src, "device reports fps of %d/%d (%.4f)",
fps_index * 15, 16, fps_index * 15.0 / 16);
for (i = 0; i < 63; ++i) {
/* set bits 16 to 21 to 0 */
vwin->flags &= (0x3F00 - 1);
/* set bits 16 to 21 to the index */
vwin->flags |= i << 16;
if (gst_v4l2_set_window_properties (v4l2element)) {
/* setting it succeeded. FIXME: get it and check. */
g_value_init (&value, GST_TYPE_FRACTION);
gst_value_set_fraction (&value, i * 15, 16);
gst_value_list_append_value (list, &value);
g_value_unset (&value);
}
}
/* FIXME: set back the original fps_index */
vwin->flags &= (0x3F00 - 1);
vwin->flags |= fps_index << 16;
gst_v4l2_set_window_properties (v4l2element);
return list;
}
return NULL;
}
#endif
#define GST_TYPE_V4L2SRC_BUFFER (gst_v4l2src_buffer_get_type())
#define GST_IS_V4L2SRC_BUFFER(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_V4L2SRC_BUFFER))
#define GST_V4L2SRC_BUFFER(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_V4L2SRC_BUFFER, GstV4l2SrcBuffer))
typedef struct _GstV4l2SrcBuffer
{
GstBuffer buffer;
GstV4l2Buffer *buf;
} GstV4l2SrcBuffer;
static void gst_v4l2src_buffer_class_init (gpointer g_class,
gpointer class_data);
static void gst_v4l2src_buffer_init (GTypeInstance * instance,
gpointer g_class);
static void gst_v4l2src_buffer_finalize (GstV4l2SrcBuffer * v4l2src_buffer);
GType
gst_v4l2src_buffer_get_type (void)
{
static GType _gst_v4l2src_buffer_type;
if (G_UNLIKELY (_gst_v4l2src_buffer_type == 0)) {
static const GTypeInfo v4l2src_buffer_info = {
sizeof (GstBufferClass),
NULL,
NULL,
gst_v4l2src_buffer_class_init,
NULL,
NULL,
sizeof (GstV4l2SrcBuffer),
0,
gst_v4l2src_buffer_init,
NULL
};
_gst_v4l2src_buffer_type = g_type_register_static (GST_TYPE_BUFFER,
"GstV4l2SrcBuffer", &v4l2src_buffer_info, 0);
}
return _gst_v4l2src_buffer_type;
}
static void
gst_v4l2src_buffer_class_init (gpointer g_class, gpointer class_data)
{
GstMiniObjectClass *mini_object_class = GST_MINI_OBJECT_CLASS (g_class);
mini_object_class->finalize = (GstMiniObjectFinalizeFunction)
gst_v4l2src_buffer_finalize;
}
static void
gst_v4l2src_buffer_init (GTypeInstance * instance, gpointer g_class)
{
}
static void
gst_v4l2src_buffer_finalize (GstV4l2SrcBuffer * v4l2src_buffer)
{
GstV4l2Buffer *buf = v4l2src_buffer->buf;
if (buf) {
GST_LOG ("freeing buffer %p (nr. %d)", buf, buf->buffer.index);
if (!g_atomic_int_dec_and_test (&buf->refcount)) {
/* we're still in use, add to queue again
note: this might fail because the device is already stopped (race) */
if (ioctl (buf->pool->video_fd, VIDIOC_QBUF, &buf->buffer) < 0)
GST_INFO ("readding to queue failed, assuming video device is stopped");
}
if (g_atomic_int_dec_and_test (&buf->pool->refcount)) {
/* we're last thing that used all this */
gst_v4l2src_buffer_pool_free (buf->pool, TRUE);
}
}
}
/* Create a V4l2Src buffer from our mmap'd data area */
GstBuffer *
gst_v4l2src_buffer_new (GstV4l2Src * v4l2src, guint size, guint8 * data,
GstV4l2Buffer * srcbuf)
{
GstBuffer *buf;
gint fps_n, fps_d;
GST_DEBUG_OBJECT (v4l2src, "creating buffer %d");
g_return_val_if_fail (gst_v4l2src_get_fps (v4l2src, &fps_n, &fps_d), NULL);
buf = (GstBuffer *) gst_mini_object_new (GST_TYPE_V4L2SRC_BUFFER);
GST_V4L2SRC_BUFFER (buf)->buf = srcbuf;
if (data == NULL) {
GST_BUFFER_DATA (buf) = g_malloc (size);
} else {
GST_BUFFER_DATA (buf) = data;
}
GST_BUFFER_SIZE (buf) = size;
GST_BUFFER_TIMESTAMP (buf) =
gst_clock_get_time (GST_ELEMENT (v4l2src)->clock);
GST_BUFFER_TIMESTAMP (buf) -= GST_ELEMENT (v4l2src)->base_time;
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_READONLY);
GST_BUFFER_DURATION (buf) = gst_util_uint64_scale_int (GST_SECOND,
fps_n, fps_d);
/* the negotiate() method already set caps on the source pad */
gst_buffer_set_caps (buf, GST_PAD_CAPS (GST_BASE_SRC_PAD (v4l2src)));
return buf;
}

50
sys/v4l2/v4l2src_calls.h
View file

@ -24,30 +24,38 @@
#include "v4l2_calls.h"
gboolean gst_v4l2src_get_capture (GstV4l2Src *v4l2src);
gboolean gst_v4l2src_set_capture (GstV4l2Src *v4l2src,
struct v4l2_fmtdesc *fmt,
gint width,
gint height);
gboolean gst_v4l2src_capture_init (GstV4l2Src *v4l2src);
gboolean gst_v4l2src_capture_start (GstV4l2Src *v4l2src);
gint gst_v4l2src_grab_frame (GstV4l2Src *v4l2src);
guint8 * gst_v4l2src_get_buffer (GstV4l2Src *v4l2src,
gint num);
gboolean gst_v4l2src_queue_frame (GstV4l2Src *v4l2src,
guint i);
gboolean gst_v4l2src_capture_stop (GstV4l2Src *v4l2src);
gboolean gst_v4l2src_capture_deinit (GstV4l2Src *v4l2src);
gboolean gst_v4l2src_get_capture (GstV4l2Src *v4l2src);
gboolean gst_v4l2src_set_capture (GstV4l2Src *v4l2src,
struct v4l2_fmtdesc *fmt,
gint width,
gint height);
gboolean gst_v4l2src_capture_init (GstV4l2Src *v4l2src);
gboolean gst_v4l2src_capture_start (GstV4l2Src *v4l2src);
gint gst_v4l2src_grab_frame (GstV4l2Src *v4l2src);
gboolean gst_v4l2src_fill_format_list (GstV4l2Src *v4l2src);
gboolean gst_v4l2src_clear_format_list (GstV4l2Src *v4l2src);
gboolean gst_v4l2src_queue_frame (GstV4l2Src *v4l2src,
guint i);
gboolean gst_v4l2src_capture_stop (GstV4l2Src *v4l2src);
gboolean gst_v4l2src_capture_deinit (GstV4l2Src *v4l2src);
gboolean gst_v4l2src_fill_format_list (GstV4l2Src *v4l2src);
gboolean gst_v4l2src_clear_format_list (GstV4l2Src *v4l2src);
/* hacky */
gboolean gst_v4l2src_get_size_limits (GstV4l2Src *v4l2src,
struct v4l2_fmtdesc *fmt,
gint *min_w, gint *max_w,
gint *min_h, gint *max_h);
gboolean gst_v4l2src_get_size_limits (GstV4l2Src *v4l2src,
struct v4l2_fmtdesc *fmt,
gint *min_w, gint *max_w,
gint *min_h, gint *max_h);
void gst_v4l2src_free_buffer (GstBuffer *buffer);
void gst_v4l2src_free_buffer (GstBuffer *buffer);
gboolean gst_v4l2src_get_fps (GstV4l2Src * v4l2src, gint * fps_n, gint * fps_d);
GValue * gst_v4l2src_get_fps_list (GstV4l2Src * v4l2src);
GstBuffer * gst_v4l2src_buffer_new (GstV4l2Src * v4l2src,
guint size, guint8 * data,
GstV4l2Buffer * srcbuf);
#endif /* __V4L2SRC_CALLS_H__ */