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
172
173
174
175
176
177
|
/*
* Copyright (c) 2012 Rudolf Polzer <divVerent@xonotic.org>
*
* This file is part of mpv's vf_dlopen examples.
*
* mpv's vf_dlopen examples are free software; you can redistribute them and/or
* modify them 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's vf_dlopen examples are distributed in the hope that they 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's vf_dlopen examples; if not, write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA
*/
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "vf_dlopen.h"
#include "filterutils.h"
/*
* tile filter
*
* usage: --vf=dlopen=/path/to/tile.so:4:3
*
* only supports rgb24 and yuv420p for now
* in theory can support any format where rows are a multiple of bytes, and the
* multiple is known
*/
#define ALLFORMATS \
/* format bytes xmul ymul */ \
FORMAT("rgb24" , 3, 1, 1) \
FORMAT("yuv420p", 1, 2, 2)
typedef struct {
int rows, cols;
unsigned char *buffer_plane[4];
size_t buffer_size[4];
int pos;
int pixelbytes;
} tile_data_t;
static int tile_config(struct vf_dlopen_context *ctx)
{
// we may return more than one pic!
tile_data_t *tile = ctx->priv;
ctx->out_width = tile->cols * ctx->in_width;
ctx->out_height = tile->rows * ctx->in_height;
ctx->out_d_width = tile->cols * ctx->in_d_width;
ctx->out_d_height = tile->rows * ctx->in_d_height;
#define FORMAT(fmt,sz,xmul,ymul) \
if (!strcmp(ctx->in_fmt, fmt)) { \
if (ctx->in_width % xmul || ctx->in_height % ymul) { \
printf("Format " fmt " requires width to be a multiple of %d and height to be a multiple of %d\n", \
xmul, ymul); \
return -1; \
} \
tile->pixelbytes = sz; \
} else
ALLFORMATS
#undef FORMAT
{
printf("Format %s is not in the list, how come?\n", ctx->in_fmt);
return -1;
}
return 1;
}
static int tile_put_image(struct vf_dlopen_context *ctx)
{
tile_data_t *tile = ctx->priv;
unsigned p;
unsigned np = ctx->outpic[0].planes;
assert(ctx->inpic.planes == ctx->outpic[0].planes);
// fix buffers
for (p = 0; p < np; ++p) {
size_t sz = ctx->outpic->planestride[p] * ctx->outpic->planeheight[p];
if (sz != tile->buffer_size[p]) {
if (p == 0 && tile->buffer_plane[p])
printf("WARNING: reinitializing output buffers.\n");
tile->buffer_plane[p] = realloc(tile->buffer_plane[p], sz);
tile->buffer_size[p] = sz;
tile->pos = 0;
}
}
for (p = 0; p < np; ++p) {
assert(ctx->inpic.planewidth[p] * tile->cols == ctx->outpic->planewidth[p]);
assert(ctx->inpic.planeheight[p] * tile->rows == ctx->outpic->planeheight[p]);
}
// copy this frame
for (p = 0; p < np; ++p)
copy_plane(
&tile->buffer_plane[p][ctx->outpic->planestride[p] * ctx->inpic.planeheight[p] * (tile->pos / tile->cols) + tile->pixelbytes * ctx->inpic.planewidth[p] * (tile->pos % tile->cols)],
ctx->outpic->planestride[p],
ctx->inpic.plane[p],
ctx->inpic.planestride[p],
tile->pixelbytes * ctx->inpic.planewidth[p],
ctx->inpic.planeheight[p]
);
++tile->pos;
if (tile->pos == tile->rows * tile->cols) {
// copy THIS image to the buffer, we need it later
for (p = 0; p < np; ++p)
copy_plane(
ctx->outpic->plane[p], ctx->outpic->planestride[p],
&tile->buffer_plane[p][0], ctx->outpic->planestride[p],
tile->pixelbytes * ctx->outpic->planewidth[p],
ctx->outpic->planeheight[p]
);
ctx->outpic->pts = ctx->inpic.pts;
tile->pos = 0;
return 1;
}
return 0;
}
void tile_uninit(struct vf_dlopen_context *ctx)
{
tile_data_t *tile = ctx->priv;
free(tile->buffer_plane[3]);
free(tile->buffer_plane[2]);
free(tile->buffer_plane[1]);
free(tile->buffer_plane[0]);
free(tile);
}
int vf_dlopen_getcontext(struct vf_dlopen_context *ctx, int argc, const char **argv)
{
VF_DLOPEN_CHECK_VERSION(ctx);
if (argc != 2)
return -1;
tile_data_t *tile = calloc(1,sizeof(tile_data_t));
tile->cols = atoi(argv[0]);
tile->rows = atoi(argv[1]);
if (!tile->rows || !tile->cols) {
printf("tile: invalid rows/cols\n");
free(tile);
return -1;
}
ctx->priv = tile;
static struct vf_dlopen_formatpair map[] = {
#define FORMAT(fmt,sz,xmul,ymul) {fmt, NULL},
ALLFORMATS
#undef FORMAT
{NULL, NULL}
};
ctx->format_mapping = map;
ctx->config = tile_config;
ctx->put_image = tile_put_image;
ctx->uninit = tile_uninit;
return 1;
}
|
