初步添加hls播放器

src/Http/HlsParser.cpp

@@ -0,0 +1,139 @@
+/*
+ * Copyright (c) 2020 The ZLMediaKit project authors. All Rights Reserved.
+ *
+ * This file is part of ZLMediaKit(https://github.com/xiongziliang/ZLMediaKit).
+ *
+ * Use of this source code is governed by MIT license that can be found in the
+ * LICENSE file in the root of the source tree. All contributing project authors
+ * may be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include <cstdlib>
+#include "HlsParser.h"
+#include "Util/util.h"
+#include "Common/Parser.h"
+using namespace toolkit;
+namespace mediakit {
+
+bool HlsParser::parse(const string &http_url, const string &m3u8) {
+    float extinf_dur = 0;
+    ts_segment segment;
+    map<int, ts_segment> ts_map;
+    _total_dur = 0;
+    _is_live = true;
+    _is_m3u8_inner = false;
+    int index = 0;
+
+    auto lines = split(m3u8, "\n");
+    for (auto &line : lines) {
+        trim(line);
+        if (line.size() < 2) {
+            continue;
+        }
+
+        if ((_is_m3u8_inner || extinf_dur != 0) && line[0] != '#') {
+            segment.duration = extinf_dur;
+            if (line.find("http://") == 0 || line.find("https://") == 0) {
+                segment.url = line;
+            } else {
+                if (line.find("/") == 0) {
+                    segment.url = http_url.substr(0, http_url.find("/", 8)) + line;
+                } else {
+                    segment.url = http_url.substr(0, http_url.rfind("/") + 1) + line;
+                }
+            }
+            if (!_is_m3u8_inner) {
+                //ts按照先后顺序排序
+                ts_map.emplace(index++, segment);
+            } else {
+                //子m3u8按照带宽排序
+                ts_map.emplace(segment.bandwidth, segment);
+            }
+            extinf_dur = 0;
+            continue;
+        }
+
+        _is_m3u8_inner = false;
+        if (line.find("#EXTINF:") == 0) {
+            sscanf(line.data(), "#EXTINF:%f,", &extinf_dur);
+            _total_dur += extinf_dur;
+            continue;
+        }
+        static const string s_stream_inf = "#EXT-X-STREAM-INF:";
+        if (line.find(s_stream_inf) == 0) {
+            _is_m3u8_inner = true;
+            auto key_val = Parser::parseArgs(line.substr(s_stream_inf.size()), ",", "=");
+            segment.program_id = atoi(key_val["PROGRAM-ID"].data());
+            segment.bandwidth = atoi(key_val["BANDWIDTH"].data());
+            sscanf(key_val["RESOLUTION"].data(), "%dx%d", &segment.width, &segment.height);
+            continue;
+        }
+
+        if (line == "#EXTM3U") {
+            _is_m3u8 = true;
+            continue;
+        }
+
+        if (line.find("#EXT-X-ALLOW-CACHE:") == 0) {
+            _allow_cache = (line.find(":YES") != string::npos);
+            continue;
+        }
+
+        if (line.find("#EXT-X-VERSION:") == 0) {
+            sscanf(line.data(), "#EXT-X-VERSION:%d", &_version);
+            continue;
+        }
+
+        if (line.find("#EXT-X-TARGETDURATION:") == 0) {
+            sscanf(line.data(), "#EXT-X-TARGETDURATION:%d", &_target_dur);
+            continue;
+        }
+
+        if (line.find("#EXT-X-MEDIA-SEQUENCE:") == 0) {
+            sscanf(line.data(), "#EXT-X-MEDIA-SEQUENCE:%lld", &_sequence);
+            continue;
+        }
+
+        if (line.find("#EXT-X-ENDLIST") == 0) {
+            //点播
+            _is_live = false;
+            continue;
+        }
+        continue;
+    }
+
+    if (_is_m3u8) {
+        onParsed(_is_m3u8_inner, _sequence, ts_map);
+    }
+    return _is_m3u8;
+}
+
+bool HlsParser::isM3u8() const {
+    return _is_m3u8;
+}
+
+bool HlsParser::isLive() const{
+    return _is_live;
+}
+
+bool HlsParser::allowCache() const {
+    return _allow_cache;
+}
+
+int HlsParser::getVersion() const {
+    return _version;
+}
+
+int HlsParser::getTargetDur() const {
+    return _target_dur;
+}
+
+int HlsParser::getSequence() const {
+    return _sequence;
+}
+
+bool HlsParser::isM3u8Inner() const {
+    return _is_m3u8_inner;
+}
+
+}//namespace mediakit