summaryrefslogtreecommitdiffstats
path: root/video/out/vo_image.c
blob: e1bc1aab201f1dc2689a27e37845feeb9c0f70a7 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
/*
 * This file is part of mpv.
 *
 * mpv is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * mpv is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with mpv.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <stdbool.h>
#include <sys/stat.h>

#include <libswscale/swscale.h>

#include "config.h"
#include "misc/bstr.h"
#include "osdep/io.h"
#include "options/m_config.h"
#include "options/path.h"
#include "mpv_talloc.h"
#include "common/common.h"
#include "common/msg.h"
#include "video/out/vo.h"
#include "video/csputils.h"
#include "video/mp_image.h"
#include "video/fmt-conversion.h"
#include "video/image_writer.h"
#include "video/sws_utils.h"
#include "sub/osd.h"
#include "options/m_option.h"

static const struct m_sub_options image_writer_conf = {
    .opts = image_writer_opts,
    .size = sizeof(struct image_writer_opts),
    .defaults = &image_writer_opts_defaults,
};

struct vo_image_opts {
    struct image_writer_opts *opts;
    char *outdir;
};

#define OPT_BASE_STRUCT struct vo_image_opts

static const struct m_sub_options vo_image_conf = {
    .opts = (const struct m_option[]) {
        OPT_SUBSTRUCT("vo-image", opts, image_writer_conf, 0),
        OPT_STRING("vo-image-outdir", outdir, 0),
        {0},
    },
    .size = sizeof(struct vo_image_opts),
};

struct priv {
    struct vo_image_opts *opts;

    struct mp_image *current;
    int frame;
};

static bool checked_mkdir(struct vo *vo, const char *buf)
{
    MP_INFO(vo, "Creating output directory '%s'...\n", buf);
    if (mkdir(buf, 0755) < 0) {
        char *errstr = mp_strerror(errno);
        if (errno == EEXIST) {
            struct stat stat_p;
            if (stat(buf, &stat_p ) == 0 && S_ISDIR(stat_p.st_mode))
                return true;
        }
        MP_ERR(vo, "Error creating output directory: %s\n", errstr);
        return false;
    }
    return true;
}

static int reconfig(struct vo *vo, struct mp_image_params *params)
{
    struct priv *p = vo->priv;
    mp_image_unrefp(&p->current);

    return 0;
}

static void draw_image(struct vo *vo, mp_image_t *mpi)
{
    struct priv *p = vo->priv;

    p->current = mpi;

    struct mp_osd_res dim = osd_res_from_image_params(vo->params);
    osd_draw_on_image(vo->osd, dim, mpi->pts, OSD_DRAW_SUB_ONLY, p->current);
}

static void flip_page(struct vo *vo)
{
    struct priv *p = vo->priv;
    if (!p->current)
        return;

    (p->frame)++;

    void *t = talloc_new(NULL);
    char *filename = talloc_asprintf(t, "%08d.%s", p->frame,
                                     image_writer_file_ext(p->opts->opts));

    if (p->opts->outdir && strlen(p->opts->outdir))
        filename = mp_path_join(t, p->opts->outdir, filename);

    MP_INFO(vo, "Saving %s\n", filename);
    write_image(p->current, p->opts->opts, filename, vo->log);

    talloc_free(t);
    mp_image_unrefp(&p->current);
}

static int query_format(struct vo *vo, int fmt)
{
    if (mp_sws_supported_format(fmt))
        return 1;
    return 0;
}

static void uninit(struct vo *vo)
{
    struct priv *p = vo->priv;

    mp_image_unrefp(&p->current);
}

static int preinit(struct vo *vo)
{
    struct priv *p = vo->priv;
    p->opts = mp_get_config_group(vo, vo->global, &vo_image_conf);
    if (p->opts->outdir && !checked_mkdir(vo, p->opts->outdir))
        return -1;
    return 0;
}

static int control(struct vo *vo, uint32_t request, void *data)
{
    return VO_NOTIMPL;
}

const struct vo_driver video_out_image =
{
    .description = "Write video frames to image files",
    .name = "image",
    .untimed = true,
    .priv_size = sizeof(struct priv),
    .preinit = preinit,
    .query_format = query_format,
    .reconfig = reconfig,
    .control = control,
    .draw_image = draw_image,
    .flip_page = flip_page,
    .uninit = uninit,
    .global_opts = &vo_image_conf,
};