mirror of
https://github.com/mpv-player/mpv
synced 2024-12-24 07:42:17 +00:00
a54f2f777f
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@18391 b3059339-0415-0410-9bf9-f77b7e298cf2
107 lines
3.1 KiB
C
107 lines
3.1 KiB
C
#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_s* 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 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 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 = 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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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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vf_info_t 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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open,
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NULL
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};
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