mpv/libmpcodecs/vf_dvbscale.c

68 lines
1.8 KiB
C

/*
* This file is part of MPlayer.
*
* MPlayer 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 of the License, or
* (at your option) any later version.
*
* MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <inttypes.h>
#include "config.h"
#include "mp_msg.h"
#include "img_format.h"
#include "mp_image.h"
#include "vf.h"
struct vf_priv_s {
int aspect;
};
//===========================================================================//
static int config(struct vf_instance *vf,
int width, int height, int d_width, int d_height,
unsigned int flags, unsigned int outfmt){
int scaled_y=vf->priv->aspect*d_height/d_width;
d_width=width; // do X-scaling by hardware
d_height=scaled_y;
return vf_next_config(vf,width,height,d_width,d_height,flags,outfmt);
}
static int vf_open(vf_instance_t *vf, char *args){
vf->config=config;
vf->default_caps=0;
vf->priv=malloc(sizeof(struct vf_priv_s));
vf->priv->aspect=768;
if(args) vf->priv->aspect=atoi(args);
return 1;
}
const vf_info_t vf_info_dvbscale = {
"calc Y scaling for DVB card",
"dvbscale",
"A'rpi",
"",
vf_open,
NULL
};
//===========================================================================//