mirror of
https://github.com/ZLMediaKit/ZLMediaKit.git
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2f8dab66c5
* 部分hls中会出现类似[../]或者[./]的相对地址, 因此写了一个解析的方法 * 有时候上游http协议不规范会导致直接输出eof, 特别是在自动重试机制开启下, 容易造成定时器没办法初始化从而拉不到流但是session一直存在,所以需要做一个判断,如果没数据直接报错
140 lines
3.6 KiB
C++
140 lines
3.6 KiB
C++
/*
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* Copyright (c) 2020 The ZLMediaKit project authors. All Rights Reserved.
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*
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* This file is part of ZLMediaKit(https://github.com/xia-chu/ZLMediaKit).
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*
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* Use of this source code is governed by MIT license that can be found in the
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* LICENSE file in the root of the source tree. All contributing project authors
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* may be found in the AUTHORS file in the root of the source tree.
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*/
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#include <cstdlib>
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#include <cinttypes>
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#include "HlsParser.h"
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#include "Util/util.h"
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#include "Common/Parser.h"
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using namespace std;
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using namespace toolkit;
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namespace mediakit {
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bool HlsParser::parse(const string &http_url, const string &m3u8) {
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float extinf_dur = 0;
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ts_segment segment;
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map<int, ts_segment> ts_map;
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_total_dur = 0;
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_is_live = true;
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_is_m3u8_inner = false;
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int index = 0;
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auto lines = split(m3u8, "\n");
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for (auto &line : lines) {
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trim(line);
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if (line.size() < 2) {
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continue;
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}
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if ((_is_m3u8_inner || extinf_dur != 0) && line[0] != '#') {
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segment.duration = extinf_dur;
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segment.url = Parser::merge_url(http_url, line);
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if (!_is_m3u8_inner) {
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//ts按照先后顺序排序
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ts_map.emplace(index++, segment);
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} else {
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//子m3u8按照带宽排序
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ts_map.emplace(segment.bandwidth, segment);
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}
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extinf_dur = 0;
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continue;
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}
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_is_m3u8_inner = false;
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if (line.find("#EXTINF:") == 0) {
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sscanf(line.data(), "#EXTINF:%f,", &extinf_dur);
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_total_dur += extinf_dur;
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continue;
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}
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static const string s_stream_inf = "#EXT-X-STREAM-INF:";
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if (line.find(s_stream_inf) == 0) {
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_is_m3u8_inner = true;
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auto key_val = Parser::parseArgs(line.substr(s_stream_inf.size()), ",", "=");
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segment.program_id = atoi(key_val["PROGRAM-ID"].data());
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segment.bandwidth = atoi(key_val["BANDWIDTH"].data());
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sscanf(key_val["RESOLUTION"].data(), "%dx%d", &segment.width, &segment.height);
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continue;
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}
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if (line == "#EXTM3U") {
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_is_m3u8 = true;
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continue;
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}
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if (line.find("#EXT-X-ALLOW-CACHE:") == 0) {
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_allow_cache = (line.find(":YES") != string::npos);
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continue;
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}
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if (line.find("#EXT-X-VERSION:") == 0) {
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sscanf(line.data(), "#EXT-X-VERSION:%d", &_version);
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continue;
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}
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if (line.find("#EXT-X-TARGETDURATION:") == 0) {
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sscanf(line.data(), "#EXT-X-TARGETDURATION:%d", &_target_dur);
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continue;
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}
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if (line.find("#EXT-X-MEDIA-SEQUENCE:") == 0) {
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sscanf(line.data(), "#EXT-X-MEDIA-SEQUENCE:%" PRId64, &_sequence);
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continue;
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}
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if (line.find("#EXT-X-ENDLIST") == 0) {
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//点播
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_is_live = false;
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continue;
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}
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continue;
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}
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if (_is_m3u8) {
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onParsed(_is_m3u8_inner, _sequence, ts_map);
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}
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return _is_m3u8;
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}
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bool HlsParser::isM3u8() const {
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return _is_m3u8;
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}
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bool HlsParser::isLive() const{
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return _is_live;
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}
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bool HlsParser::allowCache() const {
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return _allow_cache;
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}
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int HlsParser::getVersion() const {
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return _version;
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}
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int HlsParser::getTargetDur() const {
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return _target_dur;
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}
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int64_t HlsParser::getSequence() const {
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return _sequence;
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}
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bool HlsParser::isM3u8Inner() const {
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return _is_m3u8_inner;
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}
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float HlsParser::getTotalDuration() const {
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return _total_dur;
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}
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}//namespace mediakit
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