/* GStreamer * * gstv4lelement.h: base class for V4L 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 * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ #ifndef __GST_V4LELEMENT_H__ #define __GST_V4LELEMENT_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 * this in the next version (video4linux2) in such a cool way that it * breaks all compilations of old stuff... * The real problem is actually that linux/time.h doesn't use proper * macro checks before defining types like struct timeval. The proper * fix here is to either fuck the kernel header (which is what we do * by defining _LINUX_TIME_H, an innocent little hack) or by fixing it * upstream, which I'll consider doing later on. If you get compiler * errors here, check your linux/time.h && sys/time.h header setup. */ #include <sys/types.h> #define _LINUX_TIME_H #include <linux/videodev.h> #include <gst/gst.h> #include <gst/base/gstpushsrc.h> G_BEGIN_DECLS #define GST_TYPE_V4LELEMENT \ (gst_v4lelement_get_type()) #define GST_V4LELEMENT(obj) \ (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_V4LELEMENT,GstV4lElement)) #define GST_V4LELEMENT_CLASS(klass) \ (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_V4LELEMENT,GstV4lElementClass)) #define GST_IS_V4LELEMENT(obj) \ (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_V4LELEMENT)) #define GST_IS_V4LELEMENT_CLASS(klass) \ (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_V4LELEMENT)) #define GST_V4LELEMENT_GET_CLASS(klass) \ (G_TYPE_INSTANCE_GET_CLASS ((klass), GST_TYPE_V4LELEMENT, GstV4lElementClass)) typedef struct _GstV4lElement GstV4lElement; typedef struct _GstV4lElementClass GstV4lElementClass; typedef struct _GstV4lXv GstV4lXv; struct _GstV4lElement { GstPushSrc element; /* the video device */ char *videodev; /* the video-device's file descriptor */ gint video_fd; /* the video buffer (mmap()'ed) */ guint8 *buffer; /* the video device's capabilities */ struct video_capability vcap; /* the video device's window properties */ struct video_window vwin; /* some more info about the current input's capabilities */ struct video_channel vchan; /* lists... */ GList *colors; GList *norms; GList *channels; /* X-overlay */ GstV4lXv *xv; gulong xwindow_id; }; struct _GstV4lElementClass { GstPushSrcClass parent_class; /* probed devices */ GList *devices; /* 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_v4lelement_get_type(void); G_END_DECLS #endif /* __GST_V4LELEMENT_H__ */