mirror of https://github.com/mpv-player/mpv
182 lines
5.9 KiB
C
182 lines
5.9 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 <stdbool.h>
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#include <libavutil/common.h>
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#include "config.h"
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#include "common/msg.h"
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#include "options/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 "video/memcpy_pic.h"
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#include "options/m_option.h"
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static struct vf_priv_s {
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// These four values are a backup of the values parsed from the command line.
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// This is necessary so that we do not get a mess upon filter reinit due to
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// e.g. aspect changes and with only aspect specified on the command line,
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// where we would otherwise use the values calculated for a different aspect
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// instead of recalculating them again.
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int cfg_exp_w, cfg_exp_h;
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int cfg_exp_x, cfg_exp_y;
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int exp_w,exp_h;
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int exp_x,exp_y;
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double aspect;
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int round;
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} const vf_priv_dflt = {
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-1,-1,
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-1,-1,
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-1,-1,
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-1,-1,
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0.,
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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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vf->priv->exp_x = vf->priv->cfg_exp_x;
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vf->priv->exp_y = vf->priv->cfg_exp_y;
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vf->priv->exp_w = vf->priv->cfg_exp_w;
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vf->priv->exp_h = vf->priv->cfg_exp_h;
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// calculate the missing parameters:
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#if 0
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if(vf->priv->exp_w<width) vf->priv->exp_w=width;
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if(vf->priv->exp_h<height) vf->priv->exp_h=height;
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#else
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if ( vf->priv->exp_w == -1 ) vf->priv->exp_w=width;
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else if (vf->priv->exp_w < -1 ) vf->priv->exp_w=width - vf->priv->exp_w;
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else if ( vf->priv->exp_w<width ) vf->priv->exp_w=width;
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if ( vf->priv->exp_h == -1 ) vf->priv->exp_h=height;
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else if ( vf->priv->exp_h < -1 ) vf->priv->exp_h=height - vf->priv->exp_h;
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else if( vf->priv->exp_h<height ) vf->priv->exp_h=height;
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#endif
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if (vf->priv->aspect) {
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float adjusted_aspect = vf->priv->aspect;
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adjusted_aspect *= ((double)width/height) / ((double)d_width/d_height);
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if (vf->priv->exp_h < vf->priv->exp_w / adjusted_aspect) {
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vf->priv->exp_h = vf->priv->exp_w / adjusted_aspect + 0.5;
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} else {
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vf->priv->exp_w = vf->priv->exp_h * adjusted_aspect + 0.5;
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}
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}
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if (vf->priv->round > 1) { // round up.
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vf->priv->exp_w = (1 + (vf->priv->exp_w - 1) / vf->priv->round) * vf->priv->round;
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vf->priv->exp_h = (1 + (vf->priv->exp_h - 1) / vf->priv->round) * vf->priv->round;
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}
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if(vf->priv->exp_x<0 || vf->priv->exp_x+width>vf->priv->exp_w) vf->priv->exp_x=(vf->priv->exp_w-width)/2;
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if(vf->priv->exp_y<0 || vf->priv->exp_y+height>vf->priv->exp_h) vf->priv->exp_y=(vf->priv->exp_h-height)/2;
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struct mp_imgfmt_desc fmt = mp_imgfmt_get_desc(outfmt);
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vf->priv->exp_x = MP_ALIGN_DOWN(vf->priv->exp_x, fmt.align_x);
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vf->priv->exp_y = MP_ALIGN_DOWN(vf->priv->exp_y, fmt.align_y);
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vf_rescale_dsize(&d_width, &d_height, width, height,
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vf->priv->exp_w, vf->priv->exp_h);
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return vf_next_config(vf,vf->priv->exp_w,vf->priv->exp_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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int e_x = vf->priv->exp_x, e_y = vf->priv->exp_y;
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int e_w = vf->priv->exp_w, e_h = vf->priv->exp_h;
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if (e_x == 0 && e_y == 0 && e_w == mpi->w && e_h == mpi->h)
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return mpi;
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struct mp_image *dmpi = vf_alloc_out_image(vf);
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mp_image_copy_attributes(dmpi, mpi);
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struct mp_image cropped = *dmpi;
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mp_image_crop(&cropped, e_x, e_y, e_x + mpi->w, e_y + mpi->h);
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mp_image_copy(&cropped, mpi);
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int e_x2 = e_x + MP_ALIGN_DOWN(mpi->w, mpi->fmt.align_x);
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int e_y2 = e_y + MP_ALIGN_DOWN(mpi->h, mpi->fmt.align_y);
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// top border (over the full width)
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mp_image_clear(dmpi, 0, 0, e_w, e_y);
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// bottom border (over the full width)
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mp_image_clear(dmpi, 0, e_y2, e_w, e_h);
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// left
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mp_image_clear(dmpi, 0, e_y, e_x, e_y2);
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// right
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mp_image_clear(dmpi, e_x2, e_y, e_w, e_y2);
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talloc_free(mpi);
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return dmpi;
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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){
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vf->config=config;
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vf->query_format=query_format;
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vf->filter=filter;
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MP_INFO(vf, "Expand: %d x %d, %d ; %d, aspect: %f, round: %d\n",
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vf->priv->cfg_exp_w,
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vf->priv->cfg_exp_h,
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vf->priv->cfg_exp_x,
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vf->priv->cfg_exp_y,
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vf->priv->aspect,
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vf->priv->round);
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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", cfg_exp_w, 0),
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OPT_INT("h", cfg_exp_h, 0),
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OPT_INT("x", cfg_exp_x, M_OPT_MIN, .min = -1),
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OPT_INT("y", cfg_exp_y, M_OPT_MIN, .min = -1),
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OPT_DOUBLE("aspect", aspect, M_OPT_MIN, .min = 0),
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OPT_INT("round", round, M_OPT_MIN, .min = 1),
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{0}
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};
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const vf_info_t vf_info_expand = {
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.description = "expanding",
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.name = "expand",
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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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