| /* | |
| * 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 <time.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, int nb_channels) | |
| { | |
| 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); | |
| } | |
| if (nb_channels) { | |
| avio_printf(out, "CHANNELS=\"%d\",", nb_channels); | |
| } | |
| 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"); | |
| } |