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feat: 添加通过 CDN 加载视频/音频 #184

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feat: 添加通过 CDN 加载视频/音频 #184

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3 changes: 3 additions & 0 deletions Media/PlayParse/Bilibili_Config.json
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Original file line number Diff line number Diff line change
Expand Up @@ -19,5 +19,8 @@
},
// 播放单个视频时是否显示推荐的视频
"showRecommendedVideos": true,
// 首选视频 CDN 域名。填入后,视频/音频地址的 host 会被替换为它。
// 留空则使用 B 站默认返回的地址。
"cdnHost": "",
"debug": false
}
42 changes: 35 additions & 7 deletions Media/PlayParse/MediaPlayParse - Bilibili.as
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Original file line number Diff line number Diff line change
Expand Up @@ -127,6 +127,7 @@ class Config {
float danmakuStayTime = 15.0;
bool showRecommendedVideos = true;
bool debug = false;
string cdnHost;

string danmakuUrl;
string subtitleUrl;
Expand Down Expand Up @@ -183,6 +184,17 @@ Config ReadConfigFile(string file) {
if (root["debug"].isBool()) {
config.debug = root["debug"].asBool();
}
if (root["cdnHost"].isString()) {
string host = root["cdnHost"].asString();
int schemeEnd = host.find("://");
if (schemeEnd >= 0) {
host = host.substr(schemeEnd + 3);
}
while (host.length() > 0 && host.substr(host.length() - 1, 1) == "/") {
host = host.substr(0, host.length() - 1);
}
config.cdnHost = host;
}
if (!config.danmakuServer.empty()) {
config.danmakuUrl = config.danmakuServer + "/subtitle?font=" + HostUrlEncode(config.danmakuFont) + "&font_size=" + config.danmakuFontSize + "&alpha=" + config.danmakuOpacity + "&display_area=" + config.danmakuDisplayArea + "&duration_marquee=" + config.danmakuStayTime + "&duration_still=" + config.danmakuStayTime + "&cid=";
config.subtitleUrl = config.danmakuServer + "/subtitle?url=";
Expand Down Expand Up @@ -229,6 +241,22 @@ void log(string item, int info) {
log(item + ": " + info);
}

string replaceCdnHost(string url) {
if (ConfigData.cdnHost.empty() || url.empty()) {
return url;
}
int p = url.find("://");
if (p < 0) {
return url;
}
int hostStart = p + 3;
int pathStart = url.find("/", hostStart);
if (pathStart < 0) {
return url;
}
return url.substr(0, hostStart) + ConfigData.cdnHost + url.substr(pathStart);
}

string post(string url, string data="") {
string UserAgent = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.115 Safari/537.36";
string Headers = "Referer: https://www.bilibili.com\r\n";
Expand Down Expand Up @@ -534,7 +562,7 @@ string Video(string bvid, const string &in path, dictionary &MetaData, array<dic
int quality = videos[i]["id"].asInt();
dictionary qualityitem;
int codecid = videos[i]["codecid"].asInt();
url = videos[i]["baseUrl"].asString();
url = replaceCdnHost(videos[i]["baseUrl"].asString());
qualityitem["url"] = url;
int itag = videos[i]["id"].asInt() * 10 + codecid;
int trueitag = getTrueItag(itag);
Expand All @@ -548,7 +576,7 @@ string Video(string bvid, const string &in path, dictionary &MetaData, array<dic
string dolbyquality;
dolbyquality = formatFloat(data["dash"]["dolby"]["audio"][0]["bandwidth"].asInt() / 1000.0, "", 0, 1) + "K";
dictionary dolbyqualityitem;
dolbyqualityitem["url"] = data["dash"]["dolby"]["audio"][0]["baseUrl"].asString();
dolbyqualityitem["url"] = replaceCdnHost(data["dash"]["dolby"]["audio"][0]["baseUrl"].asString());
dolbyqualityitem["quality"] = "EC-3 " + dolbyquality;
dolbyqualityitem["qualityDetail"] = dolbyqualityitem["quality"];
dolbyqualityitem["itag"] = 328;
Expand All @@ -558,7 +586,7 @@ string Video(string bvid, const string &in path, dictionary &MetaData, array<dic
string flacquality;
flacquality = formatFloat(data["dash"]["flac"]["audio"]["bandwidth"].asInt() / 1000.0, "", 0, 1) + "K";
dictionary flacqualityitem;
flacqualityitem["url"] = data["dash"]["flac"]["audio"]["baseUrl"].asString();
flacqualityitem["url"] = replaceCdnHost(data["dash"]["flac"]["audio"]["baseUrl"].asString());
flacqualityitem["quality"] = "FLAC" +flacquality;
flacqualityitem["qualityDetail"] = flacqualityitem["quality"];
flacqualityitem["itag"] = 258;
Expand All @@ -572,15 +600,15 @@ string Video(string bvid, const string &in path, dictionary &MetaData, array<dic
dictionary audioqualityitem;
int audioid = audios[i]["id"].asInt();
int audioitag = getAudioItag(audioid);
audioqualityitem["url"] = audios[i]["baseUrl"].asString();
audioqualityitem["url"] = replaceCdnHost(audios[i]["baseUrl"].asString());
audioqualityitem["quality"] = "AAC " + audioquality;
audioqualityitem["qualityDetail"] = audioqualityitem["quality"];
audioqualityitem["itag"] = audioitag;
QualityList.insertLast(audioqualityitem);
}
}
} else if (data["durl"].isArray()) {
url = data["durl"][0]["url"].asString();
url = replaceCdnHost(data["durl"][0]["url"].asString());
qn = data["quality"].asInt();
dictionary qualityitem;
int codecid = data["video_codecid"].asInt();
Expand Down Expand Up @@ -612,7 +640,7 @@ string Video(string bvid, const string &in path, dictionary &MetaData, array<dic
quality_data = temp["data"];
}
if (quality_data["durl"].isArray()) {
qualityitem["url"] = quality_data["durl"][0]["url"].asString();
qualityitem["url"] = replaceCdnHost(quality_data["durl"][0]["url"].asString());
quality_codecid = quality_data["video_codecid"].asInt();
}
}
Expand All @@ -627,7 +655,7 @@ string Video(string bvid, const string &in path, dictionary &MetaData, array<dic
if (QualityList.length() == 1) {
dictionary qualityitem2;
if (data["durl"][0]["backup_url"].isArray() && data["durl"][0]["backup_url"].size() > 0) {
qualityitem2["url"] = data["durl"][0]["backup_url"][0].asString();
qualityitem2["url"] = replaceCdnHost(data["durl"][0]["backup_url"][0].asString());
} else {
qualityitem2["url"] = url;
}
Expand Down
7 changes: 7 additions & 0 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -30,6 +30,13 @@

[获取Cookie](https://github.com/chen310/BilibiliPotPlayer/issues/62#issuecomment-1841909583)

### 指定视频 CDN

如果默认加载视频较慢,可在 `Bilibili_Config.json`
中填写 `cdnHost`,把视频/音频地址的 host 替换为指定的 CDN。留空则使用 B 站默认地址。

替换 host 后可能无法播放;此时可清空 `cdnHost` 恢复默认。

## 使用方法

### 播放视频/直播
Expand Down