| /* |
| * 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"); |
| } |
| |
