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
|
/*
* Tee output protocol
* Copyright (c) 2016 Michael Niedermayer
*
* 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
*/
#include "libavutil/avstring.h"
#include "libavutil/opt.h"
#include "avformat.h"
#include "avio_internal.h"
#include "tee_common.h"
typedef struct ChildContext {
URLContext *url_context;
} ChildContext;
typedef struct TeeContext {
const AVClass *class;
int child_count;
ChildContext *child;
} TeeContext;
static const AVOption tee_options[] = {
{ NULL }
};
static const AVClass tee_class = {
.class_name = "tee",
.item_name = av_default_item_name,
.option = tee_options,
.version = LIBAVUTIL_VERSION_INT,
};
static const char *const child_delim = "|";
static int tee_write(URLContext *h, const unsigned char *buf, int size)
{
TeeContext *c = h->priv_data;
int i;
int main_ret = size;
for (i=0; i<c->child_count; i++) {
int ret = ffurl_write(c->child[i].url_context, buf, size);
if (ret < 0)
main_ret = ret;
}
return main_ret;
}
static int tee_close(URLContext *h)
{
TeeContext *c = h->priv_data;
int i;
int main_ret = 0;
for (i=0; i<c->child_count; i++) {
int ret = ffurl_closep(&c->child[i].url_context);
if (ret < 0)
main_ret = ret;
}
av_freep(&c->child);
c->child_count = 0;
return main_ret;
}
static int tee_open(URLContext *h, const char *filename, int flags)
{
TeeContext *c = h->priv_data;
int ret, i;
av_strstart(filename, "tee:", &filename);
if (flags & AVIO_FLAG_READ)
return AVERROR(ENOSYS);
while (*filename) {
char *child_string = av_get_token(&filename, child_delim);
char *child_name = NULL;
void *tmp;
AVDictionary *options = NULL;
if (!child_string) {
ret = AVERROR(ENOMEM);
goto fail;
}
tmp = av_realloc_array(c->child, c->child_count + 1, sizeof(*c->child));
if (!tmp) {
ret = AVERROR(ENOMEM);
goto loop_fail;
}
c->child = tmp;
memset(&c->child[c->child_count], 0, sizeof(c->child[c->child_count]));
ret = ff_tee_parse_slave_options(h, child_string, &options, &child_name);
if (ret < 0)
goto loop_fail;
ret = ffurl_open_whitelist(&c->child[c->child_count].url_context, child_name, flags,
&h->interrupt_callback, &options,
h->protocol_whitelist, h->protocol_blacklist,
h);
loop_fail:
av_freep(&child_string);
av_dict_free(&options);
if (ret < 0)
goto fail;
c->child_count++;
if (strspn(filename, child_delim))
filename++;
}
h->is_streamed = 0;
for (i=0; i<c->child_count; i++) {
h->is_streamed |= c->child[i].url_context->is_streamed;
}
return 0;
fail:
tee_close(h);
return ret;
}
const URLProtocol ff_tee_protocol = {
.name = "tee",
.url_open = tee_open,
.url_write = tee_write,
.url_close = tee_close,
.priv_data_size = sizeof(TeeContext),
.priv_data_class = &tee_class,
.default_whitelist = "crypto,file,http,https,httpproxy,rtmp,tcp,tls"
};
|
