mirror of https://github.com/mpv-player/mpv
116 lines
3.6 KiB
C
116 lines
3.6 KiB
C
/*
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* This file is part of MPlayer.
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*
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* MPlayer is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* MPlayer is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with MPlayer; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "config.h"
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#include "mpvcore/mp_msg.h"
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#include "mpvcore/options.h"
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#include "video/img_format.h"
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#include "video/mp_image.h"
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#include "vf.h"
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#include "mpvcore/m_option.h"
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static const struct vf_priv_s {
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int crop_w,crop_h;
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int crop_x,crop_y;
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} vf_priv_dflt = {
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-1,-1,
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-1,-1
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};
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//===========================================================================//
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static int config(struct vf_instance *vf,
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int width, int height, int d_width, int d_height,
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unsigned int flags, unsigned int outfmt)
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{
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// calculate the missing parameters:
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if(vf->priv->crop_w<=0 || vf->priv->crop_w>width) vf->priv->crop_w=width;
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if(vf->priv->crop_h<=0 || vf->priv->crop_h>height) vf->priv->crop_h=height;
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if(vf->priv->crop_x<0) vf->priv->crop_x=(width-vf->priv->crop_w)/2;
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if(vf->priv->crop_y<0) vf->priv->crop_y=(height-vf->priv->crop_h)/2;
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// rounding:
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struct mp_imgfmt_desc fmt = mp_imgfmt_get_desc(outfmt);
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vf->priv->crop_x = MP_ALIGN_DOWN(vf->priv->crop_x, fmt.align_x);
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vf->priv->crop_y = MP_ALIGN_DOWN(vf->priv->crop_y, fmt.align_y);
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// check:
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if(vf->priv->crop_w+vf->priv->crop_x>width ||
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vf->priv->crop_h+vf->priv->crop_y>height){
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mp_tmsg(MSGT_VFILTER, MSGL_WARN, "[CROP] Bad position/width/height - cropped area outside of the original!\n");
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return 0;
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}
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vf_rescale_dsize(&d_width, &d_height, width, height,
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vf->priv->crop_w, vf->priv->crop_h);
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return vf_next_config(vf,vf->priv->crop_w,vf->priv->crop_h,d_width,d_height,flags,outfmt);
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}
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static struct mp_image *filter(struct vf_instance *vf, struct mp_image *mpi)
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{
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mp_image_crop(mpi, vf->priv->crop_x, vf->priv->crop_y,
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vf->priv->crop_x + vf->priv->crop_w,
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vf->priv->crop_y + vf->priv->crop_h);
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return mpi;
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}
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static int query_format(struct vf_instance *vf, unsigned int fmt)
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{
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if (!IMGFMT_IS_HWACCEL(fmt))
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return vf_next_query_format(vf, fmt);
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return 0;
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}
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static int vf_open(vf_instance_t *vf, char *args){
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vf->config=config;
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vf->filter=filter;
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vf->query_format=query_format;
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mp_msg(MSGT_VFILTER, MSGL_INFO, "Crop: %d x %d, %d ; %d\n",
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vf->priv->crop_w,
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vf->priv->crop_h,
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vf->priv->crop_x,
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vf->priv->crop_y);
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return 1;
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}
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#define OPT_BASE_STRUCT struct vf_priv_s
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static const m_option_t vf_opts_fields[] = {
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OPT_INT("w", crop_w, M_OPT_MIN, .min = 0),
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OPT_INT("h", crop_h, M_OPT_MIN, .min = 0),
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OPT_INT("x", crop_x, M_OPT_MIN, .min = -1),
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OPT_INT("y", crop_y, M_OPT_MIN, .min = -1),
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{0}
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};
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const vf_info_t vf_info_crop = {
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.description = "cropping",
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.name = "crop",
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.open = vf_open,
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.priv_size = sizeof(struct vf_priv_s),
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.priv_defaults = &vf_priv_dflt,
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.options = vf_opts_fields,
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};
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//===========================================================================//
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