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/*
* 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 "core/mp_msg.h"
#include "video/img_format.h"
#include "video/mp_image.h"
#include "vf.h"
struct vf_priv_s {
int direction;
};
static void rotate(unsigned char* dst,unsigned char* src,int dststride,int srcstride,int w,int h,int bpp,int dir){
int y;
if(dir&1){
src+=srcstride*(w-1);
srcstride*=-1;
}
if(dir&2){
dst+=dststride*(h-1);
dststride*=-1;
}
for(y=0;y<h;y++){
int x;
switch(bpp){
case 1:
for(x=0;x<w;x++) dst[x]=src[y+x*srcstride];
break;
case 2:
for(x=0;x<w;x++) *((short*)(dst+x*2))=*((short*)(src+y*2+x*srcstride));
break;
case 4:
for(x=0;x<w;x++) *((int*)(dst+x*4))=*((int*)(src+y*4+x*srcstride));
default:
for(x=0;x<w;x++){
for (int b=0;b<bpp;b++)
dst[x*bpp+b]=src[b+y*bpp+x*srcstride];
}
break;
}
dst+=dststride;
}
}
static int reconfig(struct vf_instance *vf, struct mp_image_params *p, int flags)
{
if (vf->priv->direction & 4) {
if (p->w < p->h)
vf->priv->direction &= 3;
}
if (vf->priv->direction & 4)
return vf_next_reconfig(vf, p, flags);
struct mp_imgfmt_desc desc = mp_imgfmt_get_desc(p->imgfmt);
int a_w = MP_ALIGN_DOWN(p->w, desc.align_x);
int a_h = MP_ALIGN_DOWN(p->h, desc.align_y);
vf_rescale_dsize(&p->d_w, &p->d_h, p->w, p->h, a_w, a_h);
p->w = a_h;
p->h = a_w;
int t = p->d_w;
p->d_w = p->d_h;
p->d_h = t;
return vf_next_reconfig(vf, p, flags);
}
static struct mp_image *filter(struct vf_instance *vf, struct mp_image *mpi)
{
if (vf->priv->direction & 4)
return mpi;
struct mp_image *dmpi = vf_alloc_out_image(vf);
mp_image_copy_attributes(dmpi, mpi);
for (int p = 0; p < mpi->num_planes; p++) {
rotate(dmpi->planes[p],mpi->planes[p], dmpi->stride[p],mpi->stride[p],
dmpi->plane_w[p], dmpi->plane_h[p], mpi->fmt.bytes[p],
vf->priv->direction);
}
talloc_free(mpi);
return dmpi;
}
static int query_format(struct vf_instance *vf, unsigned int fmt)
{
struct mp_imgfmt_desc desc = mp_imgfmt_get_desc(fmt);
if (!(desc.flags & MP_IMGFLAG_BYTE_ALIGNED))
return 0;
if (desc.chroma_xs != desc.chroma_ys)
return 0;
if (desc.num_planes == 1 && (desc.chroma_xs || desc.chroma_ys))
return 0;
return vf_next_query_format(vf, fmt);
}
static int vf_open(vf_instance_t *vf, char *args){
vf->reconfig=reconfig;
vf->filter=filter;
vf->query_format=query_format;
vf->priv=malloc(sizeof(struct vf_priv_s));
vf->priv->direction=args?atoi(args):0;
return 1;
}
const vf_info_t vf_info_rotate = {
"rotate",
"rotate",
"A'rpi",
"",
vf_open,
NULL
};
//===========================================================================//
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