1 /*
2 * This file is part of MPlayer.
3 *
4 * MPlayer is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * MPlayer is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License along
15 * with MPlayer; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
17 */
18
19 #include <stdio.h>
20 #include <stdlib.h>
21 #include <string.h>
22 #include <inttypes.h>
23
24 #include "config.h"
25 #include "mp_msg.h"
26 #include "help_mp.h"
27
28 #include "img_format.h"
29 #include "mp_image.h"
30 #include "vf.h"
31
32 struct vf_priv_s {
33 double current;
34 double step;
35 int autostart;
36 int autostep;
37 unsigned have_step:1;
38 unsigned print:1;
39 };
40
put_image(vf_instance_t * vf,mp_image_t * src,double pts,double endpts)41 static int put_image(vf_instance_t *vf, mp_image_t *src, double pts, double endpts)
42 {
43 struct vf_priv_s *p = vf->priv;
44
45 if (p->print) {
46 if (pts == MP_NOPTS_VALUE)
47 mp_msg(MSGT_VFILTER, MSGL_INFO, "PTS: undef\n");
48 else
49 mp_msg(MSGT_VFILTER, MSGL_INFO, "PTS: %f\n", pts);
50 }
51 if (pts != MP_NOPTS_VALUE && p->autostart != 0) {
52 p->current = pts;
53 if (p->autostart > 0)
54 p->autostart--;
55 } else if (pts != MP_NOPTS_VALUE && p->autostep > 0) {
56 p->step = pts - p->current;
57 p->current = pts;
58 p->autostep--;
59 p->have_step = 1;
60 } else if (p->have_step) {
61 p->current += p->step;
62 pts = p->current;
63 } else {
64 pts = MP_NOPTS_VALUE;
65 }
66 return vf_next_put_image(vf, src, pts, endpts);
67 }
68
uninit(vf_instance_t * vf)69 static void uninit(vf_instance_t *vf)
70 {
71 free(vf->priv);
72 }
73
parse_args(struct vf_priv_s * p,const char * args)74 static int parse_args(struct vf_priv_s *p, const char *args)
75 {
76 int pos;
77 double num, denom = 1;
78 int iarg;
79
80 while (*args != 0) {
81 pos = 0;
82 if (sscanf(args, "print%n", &pos) == 0 && pos > 0) {
83 p->print = 1;
84 } else if (sscanf(args, "fps=%lf%n/%lf%n", &num, &pos, &denom, &pos) >=
85 1 && pos > 0) {
86 p->step = denom / num;
87 p->have_step = 1;
88 } else if (sscanf(args, "start=%lf%n", &num, &pos) >= 1 && pos > 0) {
89 p->current = num;
90 } else if (sscanf(args, "autostart=%d%n", &iarg, &pos) == 1 && pos > 0) {
91 p->autostart = iarg;
92 } else if (sscanf(args, "autofps=%d%n", &iarg, &pos) == 1 && pos > 0) {
93 p->autostep = iarg;
94 } else {
95 mp_msg(MSGT_VFILTER, MSGL_FATAL,
96 "fixpts: unknown suboption: %s\n", args);
97 return 0;
98 }
99 args += pos;
100 if (*args == ':')
101 args++;
102 }
103 return 1;
104 }
105
open(vf_instance_t * vf,char * args)106 static int open(vf_instance_t *vf, char *args)
107 {
108 struct vf_priv_s *p;
109 struct vf_priv_s ptmp = {
110 .current = 0,
111 .step = 0,
112 .autostart = 0,
113 .autostep = 0,
114 .have_step = 0,
115 .print = 0,
116 };
117
118 if (!parse_args(&ptmp, args == NULL ? "" : args))
119 return 0;
120
121 vf->put_image = put_image;
122 vf->uninit = uninit;
123 vf->priv = p = malloc(sizeof(struct vf_priv_s));
124 *p = ptmp;
125 p->current = -p->step;
126
127 return 1;
128 }
129
130 const vf_info_t vf_info_fixpts = {
131 "Fix presentation timestamps",
132 "fixpts",
133 "Nicolas George",
134 "",
135 &open,
136 NULL
137 };
138