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
|
/*
* This file is part of mpv.
*
* mpv is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser 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 <inttypes.h>
#include <stdarg.h>
#include <assert.h>
#include <libswscale/swscale.h>
#include "common/av_common.h"
#include "common/msg.h"
#include "options/options.h"
#include "video/img_format.h"
#include "video/mp_image.h"
#include "video/sws_utils.h"
#include "video/fmt-conversion.h"
#include "vf.h"
struct vf_priv_s {
struct mp_sws_context *sws;
};
static int find_best_out(vf_instance_t *vf, int in_format)
{
int best = 0;
for (int out_format = IMGFMT_START; out_format < IMGFMT_END; out_format++) {
if (!vf_next_query_format(vf, out_format))
continue;
if (sws_isSupportedOutput(imgfmt2pixfmt(out_format)) < 1)
continue;
if (best) {
int candidate = mp_imgfmt_select_best(best, out_format, in_format);
if (candidate)
best = candidate;
} else {
best = out_format;
}
}
return best;
}
static int reconfig(struct vf_instance *vf, struct mp_image_params *in,
struct mp_image_params *out)
{
unsigned int best = find_best_out(vf, in->imgfmt);
if (!best) {
MP_WARN(vf, "no supported output format found\n");
return -1;
}
*out = *in;
out->imgfmt = best;
mp_image_params_guess_csp(out);
mp_sws_set_from_cmdline(vf->priv->sws, vf->chain->opts->vo->sws_opts);
vf->priv->sws->src = *in;
vf->priv->sws->dst = *out;
if (mp_sws_reinit(vf->priv->sws) < 0) {
// error...
MP_WARN(vf, "Couldn't init libswscale for this setup\n");
return -1;
}
return 0;
}
static struct mp_image *filter(struct vf_instance *vf, struct mp_image *mpi)
{
struct mp_image *dmpi = vf_alloc_out_image(vf);
if (!dmpi)
return NULL;
mp_image_copy_attributes(dmpi, mpi);
mp_sws_scale(vf->priv->sws, dmpi, mpi);
talloc_free(mpi);
return dmpi;
}
static int query_format(struct vf_instance *vf, unsigned int fmt)
{
if (IMGFMT_IS_HWACCEL(fmt) || sws_isSupportedInput(imgfmt2pixfmt(fmt)) < 1)
return 0;
return !!find_best_out(vf, fmt);
}
static void uninit(struct vf_instance *vf)
{
}
static int vf_open(vf_instance_t *vf)
{
vf->reconfig = reconfig;
vf->filter = filter;
vf->query_format = query_format;
vf->uninit = uninit;
vf->priv->sws = mp_sws_alloc(vf);
vf->priv->sws->log = vf->log;
return 1;
}
const vf_info_t vf_info_convert = {
.description = "image format conversion with libswscale",
.name = "convert",
.open = vf_open,
.priv_size = sizeof(struct vf_priv_s),
};
|
