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
|
/*
* Copyright (c) 2009 Stefano Sabatini
*
* This file is part of FFmpeg.
*
* FFmpeg 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.
*
* FFmpeg 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 FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* pixdesc test filter
*/
#include "libavutil/common.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "internal.h"
#include "video.h"
typedef struct PixdescTestContext {
const AVPixFmtDescriptor *pix_desc;
uint32_t *line;
} PixdescTestContext;
static av_cold void uninit(AVFilterContext *ctx)
{
PixdescTestContext *priv = ctx->priv;
av_freep(&priv->line);
}
static int config_props(AVFilterLink *inlink)
{
PixdescTestContext *priv = inlink->dst->priv;
priv->pix_desc = av_pix_fmt_desc_get(inlink->format);
av_freep(&priv->line);
if (!(priv->line = av_malloc_array(sizeof(*priv->line), inlink->w)))
return AVERROR(ENOMEM);
return 0;
}
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
{
PixdescTestContext *priv = inlink->dst->priv;
AVFilterLink *outlink = inlink->dst->outputs[0];
AVFrame *out;
int i, c, w = inlink->w, h = inlink->h;
const int cw = AV_CEIL_RSHIFT(w, priv->pix_desc->log2_chroma_w);
const int ch = AV_CEIL_RSHIFT(h, priv->pix_desc->log2_chroma_h);
out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
if (!out) {
av_frame_free(&in);
return AVERROR(ENOMEM);
}
av_frame_copy_props(out, in);
for (i = 0; i < 4; i++) {
const int h1 = i == 1 || i == 2 ? ch : h;
if (out->data[i]) {
uint8_t *data = out->data[i] +
(out->linesize[i] > 0 ? 0 : out->linesize[i] * (h1-1));
memset(data, 0, FFABS(out->linesize[i]) * h1);
}
}
/* copy palette */
if (priv->pix_desc->flags & AV_PIX_FMT_FLAG_PAL ||
((priv->pix_desc->flags & FF_PSEUDOPAL) && out->data[1] && in->data[1]))
memcpy(out->data[1], in->data[1], AVPALETTE_SIZE);
for (c = 0; c < priv->pix_desc->nb_components; c++) {
const int w1 = c == 1 || c == 2 ? cw : w;
const int h1 = c == 1 || c == 2 ? ch : h;
for (i = 0; i < h1; i++) {
av_read_image_line2(priv->line,
(void*)in->data,
in->linesize,
priv->pix_desc,
0, i, c, w1, 0, 4);
av_write_image_line2(priv->line,
out->data,
out->linesize,
priv->pix_desc,
0, i, c, w1, 4);
}
}
av_frame_free(&in);
return ff_filter_frame(outlink, out);
}
static const AVFilterPad avfilter_vf_pixdesctest_inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.filter_frame = filter_frame,
.config_props = config_props,
},
{ NULL }
};
static const AVFilterPad avfilter_vf_pixdesctest_outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
},
{ NULL }
};
AVFilter ff_vf_pixdesctest = {
.name = "pixdesctest",
.description = NULL_IF_CONFIG_SMALL("Test pixel format definitions."),
.priv_size = sizeof(PixdescTestContext),
.uninit = uninit,
.inputs = avfilter_vf_pixdesctest_inputs,
.outputs = avfilter_vf_pixdesctest_outputs,
};
|
