vo_null.c

来自「君正早期ucos系统(只有早期的才不没有打包成库),MPLAYER,文件系统,图」· C语言 代码 · 共 109 行

/* 
 *  video_out_null.c
 *
 *	Copyright (C) Aaron Holtzman - June 2000
 *
 *  This file is part of mpeg2dec, a free MPEG-2 video stream decoder.
 *	
 *  mpeg2dec is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2, or (at your option)
 *  any later version.
 *   
 *  mpeg2dec 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 General Public License for more details.
 *   
 *  You should have received a copy of the GNU General Public License
 *  along with mpeg2dec; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include <mplaylib.h>
#include <mplaylib.h>
#include <mplaylib.h>
#include <errno.h>
#include "config.h"
#include "mp_msg.h"
#include "help_mp.h"
#include "video_out.h"
#include "video_out_internal.h"

static vo_info_t info = 
{
	"Null video output",
	"null",
	"Aaron Holtzman <[e-mail]>",
	""
};

LIBVO_EXTERN(null)

static uint32_t image_width, image_height;

//static uint32_t
static int draw_slice(uint8_t *image[], int stride[], int w,int h,int x,int y)
//draw_slice(uint8_t *src[], uint32_t slice_num)
{
	return 0;
}

static void draw_osd(void)
{
}

static void
flip_page(void)
{
}

static int
draw_frame(uint8_t *src[])
{
	return 0;
}

static int
query_format(uint32_t format)
{
    return VFCAP_CSP_SUPPORTED;
}

static int
config(uint32_t width, uint32_t height, uint32_t d_width, uint32_t d_height, uint32_t flags, char *title, uint32_t format)
{
	image_width = width;
	image_height = height;
	return 0;
}

static void
uninit(void)
{
}


static void check_events(void)
{
}

static int preinit(const char *arg)
{
    if(arg) 
    {
	mp_msg(MSGT_VO,MSGL_WARN, MSGTR_LIBVO_NULL_UnknownSubdevice,arg);
	return ENOSYS;
    }
    return 0;
}

static int control(uint32_t request, void *data, ...)
{
  switch (request) {
  case VOCTRL_QUERY_FORMAT:
    return query_format(*((uint32_t*)data));
  }
  return VO_NOTIMPL;
}