/* * 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 #include #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, const char *sname, int name_id, int is_default) { if (!out || !filename) return; avio_printf(out, "#EXT-X-MEDIA:TYPE=SUBTITLES,GROUP-ID=\"%s\"", sgroup); if (sname) { avio_printf(out, ",NAME=\"%s\",", sname); } else { avio_printf(out, ",NAME=\"subtitle_%d\",", name_id); } avio_printf(out, "DEFAULT=%s,", 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, int avg_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 (avg_bandwidth) avio_printf(out, ",AVERAGE-BANDWIDTH=%d", avg_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"); }