libvo/vo_null.c

   1 /*
   2  * based on video_out_null.c from mpeg2dec
   3  *
   4  * Copyright (C) Aaron Holtzman - June 2000
   5  *
   6  * This file is part of MPlayer.
   7  *
   8  * MPlayer is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * MPlayer is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along
  19  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  20  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  21  */
  22
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <string.h>
  26 #include <errno.h>
  27 #include "config.h"
  28 #include "mp_msg.h"
  29 #include "video_out.h"
  30 #include "video_out_internal.h"
  31
  32 static const vo_info_t info =
  33 {
  34         "Null video output",
  35         "null",
  36         "Aaron Holtzman <aholtzma@ess.engr.uvic.ca>",
  37         ""
  38 };
  39
  40 const LIBVO_EXTERN(null)
  41
  42 static uint32_t image_width, image_height;
  43
  44 //static uint32_t
  45 static int draw_slice(uint8_t *image[], int stride[], int w,int h,int x,int y)
  46 //draw_slice(uint8_t *src[], uint32_t slice_num)
  47 {
  48         return 0;
  49 }
  50
  51 static void draw_osd(void)
  52 {
  53 }
  54
  55 static void
  56 flip_page(void)
  57 {
  58 }
  59
  60 static int
  61 draw_frame(uint8_t *src[])
  62 {
  63         return 0;
  64 }
  65
  66 static int
  67 query_format(uint32_t format)
  68 {
  69     return VFCAP_CSP_SUPPORTED;
  70 }
  71
  72 static int
  73 config(uint32_t width, uint32_t height, uint32_t d_width, uint32_t d_height, uint32_t flags, char *title, uint32_t format)
  74 {
  75         image_width = width;
  76         image_height = height;
  77         return 0;
  78 }
  79
  80 static void
  81 uninit(void)
  82 {
  83 }
  84
  85
  86 static void check_events(void)
  87 {
  88 }
  89
  90 static int preinit(const char *arg)
  91 {
  92     if(arg)
  93     {
  94         mp_tmsg(MSGT_VO,MSGL_WARN, "[VO_NULL] Unknown subdevice: %s.\n",arg);
  95         return ENOSYS;
  96     }
  97     return 0;
  98 }
  99
 100 static int control(uint32_t request, void *data)
 101 {
 102   switch (request) {
 103   case VOCTRL_QUERY_FORMAT:
 104     return query_format(*((uint32_t*)data));
 105   }
 106   return VO_NOTIMPL;
 107 }