Commit ab745861 authored by Ronald S. Bultje's avatar Ronald S. Bultje
Browse files

Actually forgot to add the overlay file itself

Original commit message from CVS:
Actually forgot to add the overlay file itself
parent 16208609
/* G-Streamer generic V4L element - generic V4L overlay handling
* 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.
*/
//#define DEBUG
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <string.h>
#include <errno.h>
#include "v4l_calls.h"
/******************************************************
* gst_v4l_set_overlay():
* calls v4l-conf
* return value: TRUE on success, FALSE on error
******************************************************/
gboolean
gst_v4l_set_overlay (GstV4lElement *v4lelement,
gchar *display)
{
gchar *buff;
#ifdef DEBUG
fprintf(stderr, "V4L: gst_v4l_set_overlay(), display = \'%s\'\n", display);
#endif
GST_V4L_CHECK_NOT_OPEN(v4lelement);
/* start v4l-conf */
buff = g_strdup_printf("v4l-conf -q -c %s -d %s",
v4lelement->videodev?v4lelement->videodev:"/dev/video", display);
switch (system(buff))
{
case -1:
gst_element_error(GST_ELEMENT(v4lelement),
"Could not start v4l-conf: %s", sys_errlist[errno]);
g_free(buff);
return FALSE;
case 0:
break;
default:
gst_element_error(GST_ELEMENT(v4lelement),
"v4l-conf failed to run correctly: %s", sys_errlist[errno]);
g_free(buff);
return FALSE;
}
g_free(buff);
return TRUE;
}
/******************************************************
* gst_v4l_set_vwin():
* does the VIDIOCSVWIN ioctl()
* return value: TRUE on success, FALSE on error
******************************************************/
static gboolean
gst_v4l_set_vwin (GstV4lElement *v4lelement)
{
if (ioctl(v4lelement->video_fd, VIDIOCSWIN, &(v4lelement->vwin)) < 0)
{
gst_element_error(GST_ELEMENT(v4lelement),
"Failed to set the video window: %s",
sys_errlist[errno]);
return FALSE;
}
return TRUE;
}
/******************************************************
* gst_v4l_set_window():
* sets the window where to display the video overlay
* return value: TRUE on success, FALSE on error
******************************************************/
gboolean
gst_v4l_set_window (GstV4lElement *v4lelement,
gint x, gint y,
gint w, gint h)
{
#ifdef DEBUG
fprintf(stderr, "V4L: gst_v4l_set_window(), position (x,y/wxh) = %d,%d/%dx%d\n",
x, y, w, h);
#endif
GST_V4L_CHECK_OVERLAY(v4lelement);
v4lelement->vwin.clipcount = 0;
v4lelement->vwin.x = x;
v4lelement->vwin.y = y;
v4lelement->vwin.width = w;
v4lelement->vwin.height = h;
v4lelement->vwin.flags = 0;
return gst_v4l_set_vwin(v4lelement);
}
/******************************************************
* gst_v4l_set_clips():
* sets video overlay clips
* return value: TRUE on success, FALSE on error
******************************************************/
gboolean
gst_v4l_set_clips (GstV4lElement *v4lelement,
struct video_clip *clips,
gint num_clips)
{
#ifdef DEBUG
fprintf(stderr, "V4L: gst_v4l_set_clips()\n");
#endif
GST_V4L_CHECK_OPEN(v4lelement);
GST_V4L_CHECK_OVERLAY(v4lelement);
if (!(v4lelement->vcap.type & VID_TYPE_CLIPPING))
{
gst_element_error(GST_ELEMENT(v4lelement),
"Device \'%s\' doesn't do clipping",
v4lelement->videodev?v4lelement->videodev:"/dev/video");
return FALSE;
}
v4lelement->vwin.clips = clips;
v4lelement->vwin.clipcount = num_clips;
return gst_v4l_set_vwin(v4lelement);
}
/******************************************************
* gst_v4l_set_overlay():
* enables/disables actual video overlay display
* return value: TRUE on success, FALSE on error
******************************************************/
gboolean
gst_v4l_enable_overlay (GstV4lElement *v4lelement,
gboolean enable)
{
gint doit = enable?1:0;
#ifdef DEBUG
fprintf(stderr, "V4L: gst_v4l_enable_overlay(), enable = %s\n",
enable?"true":"false");
#endif
GST_V4L_CHECK_OPEN(v4lelement);
GST_V4L_CHECK_OVERLAY(v4lelement);
if (ioctl(v4lelement->video_fd, VIDIOCCAPTURE, &doit) < 0)
{
gst_element_error(GST_ELEMENT(v4lelement),
"Failed to %s overlay display: %s",
enable?"enable":"disable", sys_errlist[errno]);
return FALSE;
}
return TRUE;
}
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