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
|
/*
* Copyright © 2018, VideoLAN and dav1d authors
* Copyright © 2018, Two Orioles, LLC
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include "output/muxer.h"
typedef struct MuxerPriv {
FILE *f;
} Y4m2OutputContext;
static int y4m2_open(Y4m2OutputContext *const c, const char *const file,
const Dav1dPictureParameters *p, const unsigned fps[2])
{
if (!strcmp(file, "-")) {
c->f = stdout;
} else if (!(c->f = fopen(file, "wb"))) {
fprintf(stderr, "Failed to open %s: %s\n", file, strerror(errno));
return -1;
}
static const char *const ss_names[][2] = {
[DAV1D_PIXEL_LAYOUT_I400] = { "mono", "mono10" },
[DAV1D_PIXEL_LAYOUT_I420] = { NULL, "420p10" },
[DAV1D_PIXEL_LAYOUT_I422] = { "422", "422p10" },
[DAV1D_PIXEL_LAYOUT_I444] = { "444", "444p10" }
};
static const char *const chr_names_8bpc_i420[] = {
[DAV1D_CHR_UNKNOWN] = "420jpeg",
[DAV1D_CHR_VERTICAL] = "420mpeg2",
[DAV1D_CHR_COLOCATED] = "420paldv"
};
const char *const ss_name = p->layout == DAV1D_PIXEL_LAYOUT_I420 && p->bpc == 8 ?
chr_names_8bpc_i420[p->chr > 2 ? DAV1D_CHR_UNKNOWN : p->chr] :
ss_names[p->layout][p->bpc > 8];
fprintf(c->f, "YUV4MPEG2 W%d H%d C%s Ip F%d:%d\n",
p->w, p->h, ss_name, fps[0], fps[1]);
return 0;
}
static int y4m2_write(Y4m2OutputContext *const c, Dav1dPicture *const p) {
fprintf(c->f, "FRAME\n");
uint8_t *ptr;
const int hbd = p->p.bpc > 8;
ptr = p->data[0];
for (int y = 0; y < p->p.h; y++) {
if (fwrite(ptr, p->p.w << hbd, 1, c->f) != 1)
goto error;
ptr += p->stride[0];
}
if (p->p.layout != DAV1D_PIXEL_LAYOUT_I400) {
// u/v
const int ss_ver = p->p.layout == DAV1D_PIXEL_LAYOUT_I420;
const int ss_hor = p->p.layout != DAV1D_PIXEL_LAYOUT_I444;
const int cw = (p->p.w + ss_hor) >> ss_hor;
const int ch = (p->p.h + ss_ver) >> ss_ver;
for (int pl = 1; pl <= 2; pl++) {
ptr = p->data[pl];
for (int y = 0; y < ch; y++) {
if (fwrite(ptr, cw << hbd, 1, c->f) != 1)
goto error;
ptr += p->stride[1];
}
}
}
dav1d_picture_unref(p);
return 0;
error:
dav1d_picture_unref(p);
fprintf(stderr, "Failed to write frame data: %s\n", strerror(errno));
return -1;
}
static void y4m2_close(Y4m2OutputContext *const c) {
if (c->f != stdout)
fclose(c->f);
}
const Muxer y4m2_muxer = {
.priv_data_size = sizeof(Y4m2OutputContext),
.name = "yuv4mpeg2",
.extension = "y4m",
.write_header = y4m2_open,
.write_picture = y4m2_write,
.write_trailer = y4m2_close,
};
|
