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Original commit message from CVS: * sys/v4l/Makefile.am: * sys/v4l/gstv4l.c: (plugin_init): * sys/v4l/gstv4lelement.c: (gst_v4lelement_get_type), (gst_v4lelement_init), (gst_v4lelement_dispose), (gst_v4lelement_change_state): * sys/v4l/gstv4lelement.h: * sys/v4l/gstv4lxoverlay.c: (gst_v4l_xoverlay_open), (gst_v4l_xoverlay_close), (idle_refresh), (gst_v4l_xoverlay_set_xwindow_id): * sys/v4l/gstv4lxoverlay.h: * sys/v4l/v4l-overlay_calls.c: * sys/v4l/v4l_calls.h: * sys/v4l2/Makefile.am: * sys/v4l2/gstv4l2.c: (plugin_init): * sys/v4l2/gstv4l2element.c: (gst_v4l2element_get_type), (gst_v4l2element_init), (gst_v4l2element_dispose), (gst_v4l2element_change_state): * sys/v4l2/gstv4l2element.h: * sys/v4l2/gstv4l2xoverlay.c: (gst_v4l2_xoverlay_open), (gst_v4l2_xoverlay_close), (idle_refresh), (gst_v4l2_xoverlay_set_xwindow_id): * sys/v4l2/gstv4l2xoverlay.h: * sys/v4l2/v4l2-overlay_calls.c: * sys/v4l2/v4l2_calls.h: Remove client-side overlay handling, use the X-server v4l plugin for that. Nicer overlay, less code. Also make the plugin compileable without X (but then without overlay, obviously). Makes xwindowlistener obsolete, should we remove that?
527 lines
14 KiB
C
527 lines
14 KiB
C
/* GStreamer
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*
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* gstv4lelement.c: base class for V4L elements
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*
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* Copyright (C) 2001-2002 Ronald Bultje <rbultje@ronald.bitfreak.net>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <unistd.h>
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#include <string.h>
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#include "v4l_calls.h"
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#include "gstv4ltuner.h"
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#ifdef HAVE_XVIDEO
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#include "gstv4lxoverlay.h"
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#endif
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#include "gstv4lcolorbalance.h"
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#include <gst/propertyprobe/propertyprobe.h>
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/* elementfactory information */
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static GstElementDetails gst_v4lelement_details =
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GST_ELEMENT_DETAILS ("Generic video4linux Element",
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"Generic/Video",
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"Generic plugin for handling common video4linux calls",
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"Ronald Bultje <rbultje@ronald.bitfreak.net>");
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/* V4lElement signals and args */
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enum
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{
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/* FILL ME */
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SIGNAL_OPEN,
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SIGNAL_CLOSE,
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LAST_SIGNAL
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};
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enum
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{
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ARG_0,
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ARG_DEVICE,
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ARG_DEVICE_NAME,
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ARG_FLAGS
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};
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static void gst_v4lelement_base_init (gpointer g_class);
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static void gst_v4lelement_class_init (GstV4lElementClass * klass);
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static void gst_v4lelement_init (GstV4lElement * v4lelement);
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static void gst_v4lelement_dispose (GObject * object);
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static void gst_v4lelement_set_property (GObject * object,
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guint prop_id, const GValue * value, GParamSpec * pspec);
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static void gst_v4lelement_get_property (GObject * object,
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guint prop_id, GValue * value, GParamSpec * pspec);
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static GstElementStateReturn gst_v4lelement_change_state (GstElement * element);
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static GstElementClass *parent_class = NULL;
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static guint gst_v4lelement_signals[LAST_SIGNAL] = { 0 };
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static gboolean
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gst_v4l_iface_supported (GstImplementsInterface * iface, GType iface_type)
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{
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g_assert (iface_type == GST_TYPE_TUNER ||
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iface_type == GST_TYPE_X_OVERLAY || iface_type == GST_TYPE_COLOR_BALANCE);
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return TRUE;
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}
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static void
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gst_v4l_interface_init (GstImplementsInterfaceClass * klass)
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{
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/* default virtual functions */
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klass->supported = gst_v4l_iface_supported;
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}
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static const GList *
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gst_v4l_probe_get_properties (GstPropertyProbe * probe)
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{
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GObjectClass *klass = G_OBJECT_GET_CLASS (probe);
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static GList *list = NULL;
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if (!list) {
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list = g_list_append (NULL, g_object_class_find_property (klass, "device"));
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}
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return list;
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}
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static gboolean
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gst_v4l_class_probe_devices (GstV4lElementClass * klass, gboolean check)
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{
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static gboolean init = FALSE;
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static GList *devices = NULL;
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if (!init && !check) {
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gchar *dev_base[] = { "/dev/video", "/dev/v4l/video", NULL };
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gint base, n, fd;
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while (devices) {
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GList *item = devices;
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gchar *device = item->data;
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devices = g_list_remove (devices, item);
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g_free (device);
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}
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/* detect /dev entries */
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for (n = 0; n < 64; n++) {
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for (base = 0; dev_base[base] != NULL; base++) {
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struct stat s;
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gchar *device = g_strdup_printf ("%s%d", dev_base[base], n);
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/* does the /dev/ entry exist at all? */
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if (stat (device, &s) == 0) {
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/* yes: is a device attached? */
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if ((fd = open (device, O_RDONLY)) > 0 || errno == EBUSY) {
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if (fd > 0)
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close (fd);
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devices = g_list_append (devices, device);
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break;
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}
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}
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g_free (device);
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}
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}
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init = TRUE;
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}
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klass->devices = devices;
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return init;
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}
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static void
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gst_v4l_probe_probe_property (GstPropertyProbe * probe,
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guint prop_id, const GParamSpec * pspec)
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{
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GstV4lElementClass *klass = GST_V4LELEMENT_GET_CLASS (probe);
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switch (prop_id) {
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case ARG_DEVICE:
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gst_v4l_class_probe_devices (klass, FALSE);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (probe, prop_id, pspec);
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break;
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}
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}
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static gboolean
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gst_v4l_probe_needs_probe (GstPropertyProbe * probe,
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guint prop_id, const GParamSpec * pspec)
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{
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GstV4lElementClass *klass = GST_V4LELEMENT_GET_CLASS (probe);
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gboolean ret = FALSE;
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switch (prop_id) {
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case ARG_DEVICE:
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ret = !gst_v4l_class_probe_devices (klass, TRUE);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (probe, prop_id, pspec);
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break;
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}
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return ret;
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}
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static GValueArray *
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gst_v4l_class_list_devices (GstV4lElementClass * klass)
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{
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GValueArray *array;
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GValue value = { 0 };
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GList *item;
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if (!klass->devices)
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return NULL;
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array = g_value_array_new (g_list_length (klass->devices));
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item = klass->devices;
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g_value_init (&value, G_TYPE_STRING);
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while (item) {
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gchar *device = item->data;
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g_value_set_string (&value, device);
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g_value_array_append (array, &value);
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item = item->next;
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}
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g_value_unset (&value);
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return array;
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}
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static GValueArray *
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gst_v4l_probe_get_values (GstPropertyProbe * probe,
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guint prop_id, const GParamSpec * pspec)
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{
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GstV4lElementClass *klass = GST_V4LELEMENT_GET_CLASS (probe);
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GValueArray *array = NULL;
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switch (prop_id) {
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case ARG_DEVICE:
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array = gst_v4l_class_list_devices (klass);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (probe, prop_id, pspec);
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break;
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}
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return array;
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}
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static void
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gst_v4l_property_probe_interface_init (GstPropertyProbeInterface * iface)
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{
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iface->get_properties = gst_v4l_probe_get_properties;
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iface->probe_property = gst_v4l_probe_probe_property;
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iface->needs_probe = gst_v4l_probe_needs_probe;
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iface->get_values = gst_v4l_probe_get_values;
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}
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#define GST_TYPE_V4L_DEVICE_FLAGS (gst_v4l_device_get_type ())
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GType
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gst_v4l_device_get_type (void)
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{
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static GType v4l_device_type = 0;
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if (v4l_device_type == 0) {
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static const GFlagsValue values[] = {
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{VID_TYPE_CAPTURE, "CAPTURE", "Device can capture"},
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{VID_TYPE_TUNER, "TUNER", "Device has a tuner"},
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{VID_TYPE_OVERLAY, "OVERLAY", "Device can do overlay"},
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{VID_TYPE_MPEG_DECODER, "MPEG_DECODER", "Device can decode MPEG"},
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{VID_TYPE_MPEG_ENCODER, "MPEG_ENCODER", "Device can encode MPEG"},
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{VID_TYPE_MJPEG_DECODER, "MJPEG_DECODER", "Device can decode MJPEG"},
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{VID_TYPE_MJPEG_ENCODER, "MJPEG_ENCODER", "Device can encode MJPEG"},
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{0x10000, "AUDIO", "Device handles audio"},
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{0, NULL, NULL}
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};
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v4l_device_type = g_flags_register_static ("GstV4lDeviceTypeFlags", values);
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}
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return v4l_device_type;
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}
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GType
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gst_v4lelement_get_type (void)
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{
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static GType v4lelement_type = 0;
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if (!v4lelement_type) {
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static const GTypeInfo v4lelement_info = {
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sizeof (GstV4lElementClass),
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gst_v4lelement_base_init,
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NULL,
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(GClassInitFunc) gst_v4lelement_class_init,
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NULL,
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NULL,
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sizeof (GstV4lElement),
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0,
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(GInstanceInitFunc) gst_v4lelement_init,
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NULL
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};
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static const GInterfaceInfo v4liface_info = {
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(GInterfaceInitFunc) gst_v4l_interface_init,
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NULL,
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NULL,
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};
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static const GInterfaceInfo v4l_tuner_info = {
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(GInterfaceInitFunc) gst_v4l_tuner_interface_init,
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NULL,
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NULL,
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};
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#ifdef HAVE_XVIDEO
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static const GInterfaceInfo v4l_xoverlay_info = {
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(GInterfaceInitFunc) gst_v4l_xoverlay_interface_init,
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NULL,
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NULL,
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};
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#endif
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static const GInterfaceInfo v4l_colorbalance_info = {
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(GInterfaceInitFunc) gst_v4l_color_balance_interface_init,
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NULL,
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NULL,
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};
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static const GInterfaceInfo v4l_propertyprobe_info = {
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(GInterfaceInitFunc) gst_v4l_property_probe_interface_init,
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NULL,
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NULL,
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};
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v4lelement_type = g_type_register_static (GST_TYPE_ELEMENT,
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"GstV4lElement", &v4lelement_info, 0);
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g_type_add_interface_static (v4lelement_type,
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GST_TYPE_IMPLEMENTS_INTERFACE, &v4liface_info);
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g_type_add_interface_static (v4lelement_type,
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GST_TYPE_TUNER, &v4l_tuner_info);
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#ifdef HAVE_XVIDEO
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g_type_add_interface_static (v4lelement_type,
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GST_TYPE_X_OVERLAY, &v4l_xoverlay_info);
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#endif
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g_type_add_interface_static (v4lelement_type,
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GST_TYPE_COLOR_BALANCE, &v4l_colorbalance_info);
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g_type_add_interface_static (v4lelement_type,
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GST_TYPE_PROPERTY_PROBE, &v4l_propertyprobe_info);
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}
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return v4lelement_type;
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}
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static void
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gst_v4lelement_base_init (gpointer g_class)
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{
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GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
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GstV4lElementClass *klass = GST_V4LELEMENT_CLASS (g_class);
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klass->devices = NULL;
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gst_element_class_set_details (gstelement_class, &gst_v4lelement_details);
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}
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static void
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gst_v4lelement_class_init (GstV4lElementClass * klass)
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{
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GObjectClass *gobject_class;
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GstElementClass *gstelement_class;
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gobject_class = (GObjectClass *) klass;
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gstelement_class = (GstElementClass *) klass;
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parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_DEVICE,
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g_param_spec_string ("device", "Device", "Device location",
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NULL, G_PARAM_READWRITE));
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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_DEVICE_NAME,
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g_param_spec_string ("device_name", "Device name", "Name of the device",
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NULL, G_PARAM_READABLE));
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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_FLAGS,
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g_param_spec_flags ("flags", "Flags", "Device type flags",
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GST_TYPE_V4L_DEVICE_FLAGS, 0, G_PARAM_READABLE));
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/* signals */
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gst_v4lelement_signals[SIGNAL_OPEN] =
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g_signal_new ("open", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET (GstV4lElementClass, open),
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NULL, NULL, g_cclosure_marshal_VOID__STRING,
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G_TYPE_NONE, 1, G_TYPE_STRING);
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gst_v4lelement_signals[SIGNAL_CLOSE] =
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g_signal_new ("close", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET (GstV4lElementClass, close),
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NULL, NULL, g_cclosure_marshal_VOID__STRING,
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G_TYPE_NONE, 1, G_TYPE_STRING);
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gobject_class->set_property = gst_v4lelement_set_property;
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gobject_class->get_property = gst_v4lelement_get_property;
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gstelement_class->change_state = gst_v4lelement_change_state;
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gobject_class->dispose = gst_v4lelement_dispose;
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}
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static void
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gst_v4lelement_init (GstV4lElement * v4lelement)
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{
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/* some default values */
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v4lelement->video_fd = -1;
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v4lelement->buffer = NULL;
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v4lelement->videodev = g_strdup ("/dev/video0");
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v4lelement->norms = NULL;
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v4lelement->channels = NULL;
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v4lelement->colors = NULL;
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v4lelement->xwindow_id = 0;
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}
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static void
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gst_v4lelement_dispose (GObject * object)
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{
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GstV4lElement *v4lelement = GST_V4LELEMENT (object);
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if (v4lelement->videodev) {
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g_free (v4lelement->videodev);
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}
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if (((GObjectClass *) parent_class)->dispose)
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((GObjectClass *) parent_class)->dispose (object);
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}
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static void
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gst_v4lelement_set_property (GObject * object,
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guint prop_id, const GValue * value, GParamSpec * pspec)
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{
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GstV4lElement *v4lelement;
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/* it's not null if we got it, but it might not be ours */
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g_return_if_fail (GST_IS_V4LELEMENT (object));
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v4lelement = GST_V4LELEMENT (object);
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switch (prop_id) {
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case ARG_DEVICE:
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if (v4lelement->videodev)
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g_free (v4lelement->videodev);
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v4lelement->videodev = g_strdup (g_value_get_string (value));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_v4lelement_get_property (GObject * object,
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guint prop_id, GValue * value, GParamSpec * pspec)
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{
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GstV4lElement *v4lelement;
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/* it's not null if we got it, but it might not be ours */
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g_return_if_fail (GST_IS_V4LELEMENT (object));
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v4lelement = GST_V4LELEMENT (object);
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switch (prop_id) {
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case ARG_DEVICE:
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g_value_set_string (value, v4lelement->videodev);
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break;
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case ARG_DEVICE_NAME:{
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gchar *new = NULL;
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if (GST_V4L_IS_OPEN (v4lelement))
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new = v4lelement->vcap.name;
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g_value_set_string (value, new);
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break;
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}
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case ARG_FLAGS:{
|
|
guint flags = 0;
|
|
|
|
if (GST_V4L_IS_OPEN (v4lelement)) {
|
|
flags |= v4lelement->vcap.type & 0x3C0B;
|
|
if (v4lelement->vcap.audios)
|
|
flags |= 0x10000;
|
|
}
|
|
g_value_set_flags (value, flags);
|
|
break;
|
|
}
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
static GstElementStateReturn
|
|
gst_v4lelement_change_state (GstElement * element)
|
|
{
|
|
GstV4lElement *v4lelement;
|
|
|
|
g_return_val_if_fail (GST_IS_V4LELEMENT (element), GST_STATE_FAILURE);
|
|
|
|
v4lelement = GST_V4LELEMENT (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 (GST_STATE_TRANSITION (element)) {
|
|
case GST_STATE_NULL_TO_READY:
|
|
if (!gst_v4l_open (v4lelement))
|
|
return GST_STATE_FAILURE;
|
|
|
|
#ifdef HAVE_XVIDEO
|
|
gst_v4l_xoverlay_open (v4lelement);
|
|
#endif
|
|
|
|
g_signal_emit (G_OBJECT (v4lelement),
|
|
gst_v4lelement_signals[SIGNAL_OPEN], 0, v4lelement->videodev);
|
|
break;
|
|
|
|
case GST_STATE_READY_TO_NULL:
|
|
#ifdef HAVE_XVIDEO
|
|
gst_v4l_xoverlay_close (v4lelement);
|
|
#endif
|
|
|
|
if (!gst_v4l_close (v4lelement))
|
|
return GST_STATE_FAILURE;
|
|
|
|
g_signal_emit (G_OBJECT (v4lelement),
|
|
gst_v4lelement_signals[SIGNAL_CLOSE], 0, v4lelement->videodev);
|
|
break;
|
|
}
|
|
|
|
if (GST_ELEMENT_CLASS (parent_class)->change_state)
|
|
return GST_ELEMENT_CLASS (parent_class)->change_state (element);
|
|
|
|
return GST_STATE_SUCCESS;
|
|
}
|