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
|
/*
* Apple HTTP Live Streaming segmenter
* Copyright (c) 2012, Luca Barbato
* Copyright (c) 2017 Akamai Technologies, Inc.
*
* 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 "config.h"
#include <stdint.h>
#include "libavutil/time_internal.h"
#include "avformat.h"
#include "hlsplaylist.h"
void ff_hls_write_playlist_version(AVIOContext *out, int version) {
if (!out)
return;
avio_printf(out, "#EXTM3U\n");
avio_printf(out, "#EXT-X-VERSION:%d\n", version);
}
void ff_hls_write_audio_rendition(AVIOContext *out, char *agroup,
char *filename, char *language, int name_id, int is_default) {
if (!out || !agroup || !filename)
return;
avio_printf(out, "#EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID=\"group_%s\"", agroup);
avio_printf(out, ",NAME=\"audio_%d\",DEFAULT=%s,", name_id, is_default ? "YES" : "NO");
if (language) {
avio_printf(out, "LANGUAGE=\"%s\",", language);
}
avio_printf(out, "URI=\"%s\"\n", filename);
}
void ff_hls_write_stream_info(AVStream *st, AVIOContext *out,
int bandwidth, char *filename, char *agroup,
char *codecs, char *ccgroup) {
if (!out || !filename)
return;
if (!bandwidth) {
av_log(NULL, AV_LOG_WARNING,
"Bandwidth info not available, set audio and video bitrates\n");
return;
}
avio_printf(out, "#EXT-X-STREAM-INF:BANDWIDTH=%d", bandwidth);
if (st && st->codecpar->width > 0 && st->codecpar->height > 0)
avio_printf(out, ",RESOLUTION=%dx%d", st->codecpar->width,
st->codecpar->height);
if (codecs && strlen(codecs) > 0)
avio_printf(out, ",CODECS=\"%s\"", codecs);
if (agroup && strlen(agroup) > 0)
avio_printf(out, ",AUDIO=\"group_%s\"", agroup);
if (ccgroup && strlen(ccgroup) > 0)
avio_printf(out, ",CLOSED-CAPTIONS=\"%s\"", ccgroup);
avio_printf(out, "\n%s\n\n", filename);
}
void ff_hls_write_playlist_header(AVIOContext *out, int version, int allowcache,
int target_duration, int64_t sequence,
uint32_t playlist_type, int iframe_mode) {
if (!out)
return;
ff_hls_write_playlist_version(out, version);
if (allowcache == 0 || allowcache == 1) {
avio_printf(out, "#EXT-X-ALLOW-CACHE:%s\n", allowcache == 0 ? "NO" : "YES");
}
avio_printf(out, "#EXT-X-TARGETDURATION:%d\n", target_duration);
avio_printf(out, "#EXT-X-MEDIA-SEQUENCE:%"PRId64"\n", sequence);
av_log(NULL, AV_LOG_VERBOSE, "EXT-X-MEDIA-SEQUENCE:%"PRId64"\n", sequence);
if (playlist_type == PLAYLIST_TYPE_EVENT) {
avio_printf(out, "#EXT-X-PLAYLIST-TYPE:EVENT\n");
} else if (playlist_type == PLAYLIST_TYPE_VOD) {
avio_printf(out, "#EXT-X-PLAYLIST-TYPE:VOD\n");
}
if (iframe_mode) {
avio_printf(out, "#EXT-X-I-FRAMES-ONLY\n");
}
}
void ff_hls_write_init_file(AVIOContext *out, char *filename,
int byterange_mode, int64_t size, int64_t pos) {
avio_printf(out, "#EXT-X-MAP:URI=\"%s\"", filename);
if (byterange_mode) {
avio_printf(out, ",BYTERANGE=\"%"PRId64"@%"PRId64"\"", size, pos);
}
avio_printf(out, "\n");
}
int ff_hls_write_file_entry(AVIOContext *out, int insert_discont,
int byterange_mode,
double duration, int round_duration,
int64_t size, int64_t pos, //Used only if HLS_SINGLE_FILE flag is set
char *baseurl, //Ignored if NULL
char *filename, double *prog_date_time,
int64_t video_keyframe_size, int64_t video_keyframe_pos, int iframe_mode) {
if (!out || !filename)
return AVERROR(EINVAL);
if (insert_discont) {
avio_printf(out, "#EXT-X-DISCONTINUITY\n");
}
if (round_duration)
avio_printf(out, "#EXTINF:%ld,\n", lrint(duration));
else
avio_printf(out, "#EXTINF:%f,\n", duration);
if (byterange_mode)
avio_printf(out, "#EXT-X-BYTERANGE:%"PRId64"@%"PRId64"\n", iframe_mode ? video_keyframe_size : size,
iframe_mode ? video_keyframe_pos : pos);
if (prog_date_time) {
time_t tt, wrongsecs;
int milli;
struct tm *tm, tmpbuf;
char buf0[128], buf1[128];
tt = (int64_t)*prog_date_time;
milli = av_clip(lrint(1000*(*prog_date_time - tt)), 0, 999);
tm = localtime_r(&tt, &tmpbuf);
if (!strftime(buf0, sizeof(buf0), "%Y-%m-%dT%H:%M:%S", tm)) {
av_log(NULL, AV_LOG_DEBUG, "strftime error in ff_hls_write_file_entry\n");
return AVERROR_UNKNOWN;
}
if (!strftime(buf1, sizeof(buf1), "%z", tm) || buf1[1]<'0' ||buf1[1]>'2') {
int tz_min, dst = tm->tm_isdst;
tm = gmtime_r(&tt, &tmpbuf);
tm->tm_isdst = dst;
wrongsecs = mktime(tm);
tz_min = (FFABS(wrongsecs - tt) + 30) / 60;
snprintf(buf1, sizeof(buf1),
"%c%02d%02d",
wrongsecs <= tt ? '+' : '-',
tz_min / 60,
tz_min % 60);
}
avio_printf(out, "#EXT-X-PROGRAM-DATE-TIME:%s.%03d%s\n", buf0, milli, buf1);
*prog_date_time += duration;
}
if (baseurl)
avio_printf(out, "%s", baseurl);
avio_printf(out, "%s\n", filename);
return 0;
}
void ff_hls_write_end_list (AVIOContext *out) {
if (!out)
return;
avio_printf(out, "#EXT-X-ENDLIST\n");
}
|
