mirror of
https://git.videolan.org/git/ffmpeg.git
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138 lines
3.5 KiB
C
138 lines
3.5 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 <inttypes.h>
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#include "config.h"
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#include "mp_msg.h"
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#include "help_mp.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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double current;
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double step;
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int autostart;
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int autostep;
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unsigned have_step:1;
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unsigned print:1;
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};
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static int put_image(vf_instance_t *vf, mp_image_t *src, double pts)
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{
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struct vf_priv_s *p = vf->priv;
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if (p->print) {
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if (pts == MP_NOPTS_VALUE)
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mp_msg(MSGT_VFILTER, MSGL_INFO, "PTS: undef\n");
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else
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mp_msg(MSGT_VFILTER, MSGL_INFO, "PTS: %f\n", pts);
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}
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if (pts != MP_NOPTS_VALUE && p->autostart != 0) {
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p->current = pts;
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if (p->autostart > 0)
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p->autostart--;
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} else if (pts != MP_NOPTS_VALUE && p->autostep > 0) {
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p->step = pts - p->current;
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p->current = pts;
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p->autostep--;
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p->have_step = 1;
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} else if (p->have_step) {
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p->current += p->step;
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pts = p->current;
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} else {
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pts = MP_NOPTS_VALUE;
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}
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return vf_next_put_image(vf, src, pts);
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}
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static void uninit(vf_instance_t *vf)
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{
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free(vf->priv);
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}
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static int parse_args(struct vf_priv_s *p, const char *args)
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{
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int pos;
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double num, denom = 1;
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int iarg;
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while (*args != 0) {
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pos = 0;
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if (sscanf(args, "print%n", &pos) == 0 && pos > 0) {
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p->print = 1;
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} else if (sscanf(args, "fps=%lf%n/%lf%n", &num, &pos, &denom, &pos) >=
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1 && pos > 0) {
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p->step = denom / num;
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p->have_step = 1;
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} else if (sscanf(args, "start=%lf%n", &num, &pos) >= 1 && pos > 0) {
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p->current = num;
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} else if (sscanf(args, "autostart=%d%n", &iarg, &pos) == 1 && pos > 0) {
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p->autostart = iarg;
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} else if (sscanf(args, "autofps=%d%n", &iarg, &pos) == 1 && pos > 0) {
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p->autostep = iarg;
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} else {
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mp_msg(MSGT_VFILTER, MSGL_FATAL,
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"fixpts: unknown suboption: %s\n", args);
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return 0;
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}
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args += pos;
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if (*args == ':')
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args++;
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}
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return 1;
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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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struct vf_priv_s *p;
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struct vf_priv_s ptmp = {
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.current = 0,
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.step = 0,
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.autostart = 0,
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.autostep = 0,
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.have_step = 0,
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.print = 0,
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};
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if (!parse_args(&ptmp, args == NULL ? "" : args))
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return 0;
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vf->put_image = put_image;
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vf->uninit = uninit;
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vf->priv = p = malloc(sizeof(struct vf_priv_s));
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*p = ptmp;
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p->current = -p->step;
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return 1;
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}
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const vf_info_t vf_info_fixpts = {
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"Fix presentation timestamps",
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"fixpts",
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"Nicolas George",
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"",
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&open,
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NULL
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};
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