mirror of https://github.com/FFmpeg/FFmpeg.git
Karthick J
7 years ago
committed by
Steven Liu
parent
eb69e7bed8
commit
da49cdf640
4 changed files with 211 additions and 95 deletions
@ -0,0 +1,138 @@ |
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/*
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* Apple HTTP Live Streaming segmenter |
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* Copyright (c) 2012, Luca Barbato |
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* Copyright (c) 2017 Akamai Technologies, Inc. |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include "config.h" |
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#include <stdint.h> |
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#include "libavutil/time_internal.h" |
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#include "avformat.h" |
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#include "hlsplaylist.h" |
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void ff_hls_write_playlist_version(AVIOContext *out, int version) { |
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if (!out) |
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return; |
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avio_printf(out, "#EXTM3U\n"); |
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avio_printf(out, "#EXT-X-VERSION:%d\n", version); |
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} |
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void ff_hls_write_stream_info(AVStream *st, AVIOContext *out, |
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int bandwidth, char *filename) { |
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if (!out || !filename) |
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return; |
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if (!bandwidth) { |
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av_log(NULL, AV_LOG_WARNING, |
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"Bandwidth info not available, set audio and video bitrates\n"); |
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return; |
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} |
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avio_printf(out, "#EXT-X-STREAM-INF:BANDWIDTH=%d", bandwidth); |
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if (st && st->codecpar->width > 0 && st->codecpar->height > 0) |
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avio_printf(out, ",RESOLUTION=%dx%d", st->codecpar->width, |
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st->codecpar->height); |
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avio_printf(out, "\n%s\n\n", filename); |
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} |
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void ff_hls_write_playlist_header(AVIOContext *out, int version, int allowcache, |
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int target_duration, int64_t sequence, |
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uint32_t playlist_type) { |
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if (!out) |
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return; |
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ff_hls_write_playlist_version(out, version); |
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if (allowcache == 0 || allowcache == 1) { |
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avio_printf(out, "#EXT-X-ALLOW-CACHE:%s\n", allowcache == 0 ? "NO" : "YES"); |
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} |
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avio_printf(out, "#EXT-X-TARGETDURATION:%d\n", target_duration); |
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avio_printf(out, "#EXT-X-MEDIA-SEQUENCE:%"PRId64"\n", sequence); |
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av_log(NULL, AV_LOG_VERBOSE, "EXT-X-MEDIA-SEQUENCE:%"PRId64"\n", sequence); |
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if (playlist_type == PLAYLIST_TYPE_EVENT) { |
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avio_printf(out, "#EXT-X-PLAYLIST-TYPE:EVENT\n"); |
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} else if (playlist_type == PLAYLIST_TYPE_VOD) { |
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avio_printf(out, "#EXT-X-PLAYLIST-TYPE:VOD\n"); |
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} |
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} |
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void ff_hls_write_init_file(AVIOContext *out, char *filename, |
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int byterange_mode, int64_t size, int64_t pos) { |
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avio_printf(out, "#EXT-X-MAP:URI=\"%s\"", filename); |
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if (byterange_mode) { |
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avio_printf(out, ",BYTERANGE=\"%"PRId64"@%"PRId64"\"", size, pos); |
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} |
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avio_printf(out, "\n"); |
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} |
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void ff_hls_write_file_entry(AVIOContext *out, int insert_discont, |
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int byterange_mode, |
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double duration, int round_duration, |
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int64_t size, int64_t pos, //Used only if HLS_SINGLE_FILE flag is set
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char *baseurl, //Ignored if NULL
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char *filename, double *prog_date_time) { |
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if (!out || !filename) |
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return; |
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if (insert_discont) { |
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avio_printf(out, "#EXT-X-DISCONTINUITY\n"); |
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} |
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if (round_duration) |
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avio_printf(out, "#EXTINF:%ld,\n", lrint(duration)); |
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else |
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avio_printf(out, "#EXTINF:%f,\n", duration); |
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if (byterange_mode) |
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avio_printf(out, "#EXT-X-BYTERANGE:%"PRId64"@%"PRId64"\n", size, pos); |
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if (prog_date_time) { |
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time_t tt, wrongsecs; |
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int milli; |
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struct tm *tm, tmpbuf; |
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char buf0[128], buf1[128]; |
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tt = (int64_t)*prog_date_time; |
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milli = av_clip(lrint(1000*(*prog_date_time - tt)), 0, 999); |
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tm = localtime_r(&tt, &tmpbuf); |
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strftime(buf0, sizeof(buf0), "%Y-%m-%dT%H:%M:%S", tm); |
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if (!strftime(buf1, sizeof(buf1), "%z", tm) || buf1[1]<'0' ||buf1[1]>'2') { |
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int tz_min, dst = tm->tm_isdst; |
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tm = gmtime_r(&tt, &tmpbuf); |
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tm->tm_isdst = dst; |
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wrongsecs = mktime(tm); |
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tz_min = (FFABS(wrongsecs - tt) + 30) / 60; |
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snprintf(buf1, sizeof(buf1), |
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"%c%02d%02d", |
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wrongsecs <= tt ? '+' : '-', |
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tz_min / 60, |
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tz_min % 60); |
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} |
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avio_printf(out, "#EXT-X-PROGRAM-DATE-TIME:%s.%03d%s\n", buf0, milli, buf1); |
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*prog_date_time += duration; |
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} |
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if (baseurl) |
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avio_printf(out, "%s", baseurl); |
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avio_printf(out, "%s\n", filename); |
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} |
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void ff_hls_write_end_list (AVIOContext *out) { |
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if (!out) |
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return; |
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avio_printf(out, "#EXT-X-ENDLIST\n"); |
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} |
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@ -0,0 +1,51 @@ |
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/*
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* Apple HTTP Live Streaming segmenter |
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* Copyright (c) 2012, Luca Barbato |
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* Copyright (c) 2017 Akamai Technologies, Inc. |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#ifndef AVFORMAT_HLSPLAYLIST_H_ |
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#define AVFORMAT_HLSPLAYLIST_H_ |
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#include "libavutil/common.h" |
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typedef enum { |
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PLAYLIST_TYPE_NONE, |
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PLAYLIST_TYPE_EVENT, |
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PLAYLIST_TYPE_VOD, |
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PLAYLIST_TYPE_NB, |
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} PlaylistType; |
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void ff_hls_write_playlist_version(AVIOContext *out, int version); |
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void ff_hls_write_stream_info(AVStream *st, AVIOContext *out, |
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int bandwidth, char *filename); |
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void ff_hls_write_playlist_header(AVIOContext *out, int version, int allowcache, |
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int target_duration, int64_t sequence, |
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uint32_t playlist_type); |
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void ff_hls_write_init_file(AVIOContext *out, char *filename, |
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int byterange_mode, int64_t size, int64_t pos); |
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void ff_hls_write_file_entry(AVIOContext *out, int insert_discont, |
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int byterange_mode, |
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double duration, int round_duration, |
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int64_t size, int64_t pos, //Used only if HLS_SINGLE_FILE flag is set
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char *baseurl, //Ignored if NULL
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char *filename, double *prog_date_time); |
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void ff_hls_write_end_list (AVIOContext *out); |
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#endif /* AVFORMAT_HLSPLAYLIST_H_ */ |
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