mirror of https://github.com/FFmpeg/FFmpeg.git
Filter does nothing, and supposed funcionality is already available with native filter(s). Signed-off-by: Paul B Mahol <onemda@gmail.com>pull/8/head
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/*
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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 <inttypes.h> |
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#include "config.h" |
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#include "mp_msg.h" |
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#include "img_format.h" |
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#include "mp_image.h" |
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#include "vf.h" |
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struct vf_priv_s { |
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int w, h; |
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int method; // aspect method, 0 -> downscale, 1-> upscale. +2 -> original aspect.
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int round; |
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float aspect; |
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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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if (vf->priv->aspect < 0.001) { // did the user input aspect or w,h params
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if (vf->priv->w == 0) vf->priv->w = d_width; |
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if (vf->priv->h == 0) vf->priv->h = d_height; |
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if (vf->priv->w == -1) vf->priv->w = width; |
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if (vf->priv->h == -1) vf->priv->h = height; |
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if (vf->priv->w == -2) vf->priv->w = vf->priv->h * (double)d_width / d_height; |
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if (vf->priv->w == -3) vf->priv->w = vf->priv->h * (double)width / height; |
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if (vf->priv->h == -2) vf->priv->h = vf->priv->w * (double)d_height / d_width; |
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if (vf->priv->h == -3) vf->priv->h = vf->priv->w * (double)height / width; |
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if (vf->priv->method > -1) { |
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double aspect = (vf->priv->method & 2) ? ((double)height / width) : ((double)d_height / d_width); |
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if ((vf->priv->h > vf->priv->w * aspect) ^ (vf->priv->method & 1)) { |
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vf->priv->h = vf->priv->w * aspect; |
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} else { |
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vf->priv->w = vf->priv->h / aspect; |
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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->w += (vf->priv->round - 1 - (vf->priv->w - 1) % vf->priv->round); |
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vf->priv->h += (vf->priv->round - 1 - (vf->priv->h - 1) % vf->priv->round); |
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} |
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d_width = vf->priv->w; |
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d_height = vf->priv->h; |
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} else { |
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if (vf->priv->aspect * height > width) { |
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d_width = height * vf->priv->aspect + .5; |
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d_height = height; |
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} else { |
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d_height = width / vf->priv->aspect + .5; |
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d_width = width; |
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} |
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} |
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return ff_vf_next_config(vf, width, height, d_width, d_height, flags, outfmt); |
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} |
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static void uninit(vf_instance_t *vf) { |
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free(vf->priv); |
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vf->priv = NULL; |
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} |
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static int vf_open(vf_instance_t *vf, char *args) |
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{ |
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vf->config = config; |
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vf->draw_slice = ff_vf_next_draw_slice; |
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vf->uninit = uninit; |
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//vf->default_caps = 0;
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vf->priv = calloc(sizeof(struct vf_priv_s), 1); |
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vf->priv->aspect = 0.; |
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vf->priv->w = -1; |
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vf->priv->h = -1; |
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vf->priv->method = -1; |
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vf->priv->round = 1; |
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if (args) { |
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if (strchr(args, '/')) { |
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int w, h; |
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sscanf(args, "%d/%d", &w, &h); |
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vf->priv->aspect = (float)w/h; |
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} else if (strchr(args, '.')) { |
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sscanf(args, "%f", &vf->priv->aspect); |
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} else { |
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sscanf(args, "%d:%d:%d:%d", &vf->priv->w, &vf->priv->h, &vf->priv->method, &vf->priv->round); |
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} |
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} |
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if ((vf->priv->aspect < 0.) || (vf->priv->w < -3) || (vf->priv->h < -3) || |
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((vf->priv->w < -1) && (vf->priv->h < -1)) || |
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(vf->priv->method < -1) || (vf->priv->method > 3) || |
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(vf->priv->round < 0)) { |
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ff_mp_msg(MSGT_VFILTER, MSGL_ERR, "[dsize] Illegal value(s): aspect: %f w: %d h: %d aspect_method: %d round: %d\n", vf->priv->aspect, vf->priv->w, vf->priv->h, vf->priv->method, vf->priv->round); |
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free(vf->priv); vf->priv = NULL; |
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return -1; |
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} |
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return 1; |
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} |
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const vf_info_t ff_vf_info_dsize = { |
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"reset displaysize/aspect", |
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"dsize", |
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"Rich Felker", |
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"", |
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vf_open, |
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NULL |
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}; |
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