mirror of https://github.com/mpv-player/mpv
90 lines
2.4 KiB
C
90 lines
2.4 KiB
C
/*
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* This file is part of mpv.
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*
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* mpv 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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* mpv 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 mpv. If not, see <http://www.gnu.org/licenses/>.
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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 "common/msg.h"
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#include "options/m_option.h"
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#include "vf.h"
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#include "vf_lavfi.h"
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struct vf_priv_s {
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int angle;
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struct vf_lw_opts *lw_opts;
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};
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static const char *const rot[] = {
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"null",
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"transpose=clock",
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"vflip,hflip",
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"transpose=cclock",
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"null", // actually set in lavfi_recreate()
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};
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static int lavfi_reconfig(struct vf_instance *vf,
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struct mp_image_params *in,
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struct mp_image_params *out)
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{
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struct vf_priv_s *p = vf_lw_old_priv(vf);
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if (p->angle == 4) { // "auto"
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int r = in->rotate;
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if (r < 0 || r >= 360 || (r % 90) != 0) {
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MP_ERR(vf, "Can't apply rotation of %d degrees.\n", r);
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return -1;
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}
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vf_lw_update_graph(vf, NULL, "%s", rot[(r / 90) % 360]);
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out->rotate = 0;
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}
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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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{
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struct vf_priv_s *p = vf->priv;
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if (vf_lw_set_graph(vf, p->lw_opts, NULL, "%s", rot[p->angle]) >= 0) {
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vf_lw_set_reconfig_cb(vf, lavfi_reconfig);
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return 1;
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}
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return 0;
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}
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#define OPT_BASE_STRUCT struct vf_priv_s
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const vf_info_t vf_info_rotate = {
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.description = "rotate",
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.name = "rotate",
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.open = vf_open,
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.priv_size = sizeof(struct vf_priv_s),
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.options = (const struct m_option[]){
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OPT_CHOICE("angle", angle, 0,
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({"0", 0},
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{"90", 1},
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{"180", 2},
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{"270", 3},
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{"auto", 4})),
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OPT_SUBSTRUCT("", lw_opts, vf_lw_conf, 0),
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{0}
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},
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};
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//===========================================================================//
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