libvo/vo_null.c

   1 /*
   2  *  video_out_null.c
   3  *
   4  *      Copyright (C) Aaron Holtzman - June 2000
   5  *
   6  *  This file is part of mpeg2dec, a free MPEG-2 video stream decoder.
   7  *
   8  *  mpeg2dec 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, or (at your option)
  11  *  any later version.
  12  *
  13  *  mpeg2dec 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
  19  *  along with mpeg2dec; if not, write to the Free Software
  20  *  Foundation, Inc., 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 "help_mp.h"
  30 #include "video_out.h"
  31 #include "video_out_internal.h"
  32
  33 static const vo_info_t info =
  34 {
  35         "Null video output",
  36         "null",
  37         "Aaron Holtzman <aholtzma@ess.engr.uvic.ca>",
  38         ""
  39 };
  40
  41 const LIBVO_EXTERN(null)
  42
  43 static uint32_t image_width, image_height;
  44
  45 //static uint32_t
  46 static int draw_slice(uint8_t *image[], int stride[], int w,int h,int x,int y)
  47 //draw_slice(uint8_t *src[], uint32_t slice_num)
  48 {
  49         return 0;
  50 }
  51
  52 static void draw_osd(void)
  53 {
  54 }
  55
  56 static void
  57 flip_page(void)
  58 {
  59 }
  60
  61 static int
  62 draw_frame(uint8_t *src[])
  63 {
  64         return 0;
  65 }
  66
  67 static int
  68 query_format(uint32_t format)
  69 {
  70     return VFCAP_CSP_SUPPORTED;
  71 }
  72
  73 static int
  74 config(uint32_t width, uint32_t height, uint32_t d_width, uint32_t d_height, uint32_t flags, char *title, uint32_t format)
  75 {
  76         image_width = width;
  77         image_height = height;
  78         return 0;
  79 }
  80
  81 static void
  82 uninit(void)
  83 {
  84 }
  85
  86
  87 static void check_events(void)
  88 {
  89 }
  90
  91 static int preinit(const char *arg)
  92 {
  93     if(arg)
  94     {
  95         mp_msg(MSGT_VO,MSGL_WARN, MSGTR_LIBVO_NULL_UnknownSubdevice,arg);
  96         return ENOSYS;
  97     }
  98     return 0;
  99 }
 100
 101 static int control(uint32_t request, void *data, ...)
 102 {
 103   switch (request) {
 104   case VOCTRL_QUERY_FORMAT:
 105     return query_format(*((uint32_t*)data));
 106   }
 107   return VO_NOTIMPL;
 108 }