196 lines
7 KiB
C
196 lines
7 KiB
C
|
/*
|
||
|
|
* 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, const char *agroup,
|
||
|
|
const char *filename, const 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_subtitle_rendition(AVIOContext *out, const char *sgroup,
|
||
|
|
const char *filename, const char *language,
|
||
|
|
int name_id, int is_default)
|
||
|
|
{
|
||
|
|
if (!out || !filename)
|
||
|
|
return;
|
||
|
|
|
||
|
|
avio_printf(out, "#EXT-X-MEDIA:TYPE=SUBTITLES,GROUP-ID=\"%s\"", sgroup);
|
||
|
|
avio_printf(out, ",NAME=\"subtitle_%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,
|
||
|
|
const char *filename, const char *agroup,
|
||
|
|
const char *codecs, const char *ccgroup,
|
||
|
|
const char *sgroup)
|
||
|
|
{
|
||
|
|
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 && codecs[0])
|
||
|
|
avio_printf(out, ",CODECS=\"%s\"", codecs);
|
||
|
|
if (agroup && agroup[0])
|
||
|
|
avio_printf(out, ",AUDIO=\"group_%s\"", agroup);
|
||
|
|
if (ccgroup && ccgroup[0])
|
||
|
|
avio_printf(out, ",CLOSED-CAPTIONS=\"%s\"", ccgroup);
|
||
|
|
if (sgroup && sgroup[0])
|
||
|
|
avio_printf(out, ",SUBTITLES=\"%s\"", sgroup);
|
||
|
|
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, const 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 */,
|
||
|
|
const char *baseurl /* Ignored if NULL */,
|
||
|
|
const 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");
|
||
|
|
}
|
||
|
|
|