public R <PlayResource> GetResourceById(AudioResource resource)
{
var channel = resource.ResourceId;
// request api token
string jsonResponse;
if (!WebWrapper.DownloadString(out jsonResponse, new Uri($"http://api.twitch.tv/api/channels/{channel}/access_token"), new Tuple <string, string>("Client-ID", twitchClientId)))
{
return(RResultCode.NoConnection.ToString());
}
var jsonDict = (Dictionary <string, object>)Util.Serializer.DeserializeObject(jsonResponse);
// request m3u8 file
var token = Uri.EscapeUriString(jsonDict["token"].ToString());
var sig = jsonDict["sig"];
// guaranteed to be random, chosen by fair dice roll.
var random = 4;
string m3u8;
if (!WebWrapper.DownloadString(out m3u8, new Uri($"http://usher.twitch.tv/api/channel/hls/{channel}.m3u8?player=twitchweb&&token={token}&sig={sig}&allow_audio_only=true&allow_source=true&type=any&p={random}")))
{
return(RResultCode.NoConnection.ToString());
}
// parse m3u8 file
var dataList = new List <StreamData>();
using (var reader = new System.IO.StringReader(m3u8))
{
var header = reader.ReadLine();
if (string.IsNullOrEmpty(header) || header != "#EXTM3U")
{
return(RResultCode.TwitchMalformedM3u8File.ToString());
}
while (true)
{
var blockInfo = reader.ReadLine();
if (string.IsNullOrEmpty(blockInfo))
{
break;
}
var match = M3U8ExtMatch.Match(blockInfo);
if (!match.Success)
{
continue;
}
switch (match.Groups[1].Value)
{
case "EXT-X-TWITCH-INFO": break; // Ignore twitch info line
case "EXT-X-MEDIA":
string streamInfo = reader.ReadLine();
Match infoMatch;
if (string.IsNullOrEmpty(streamInfo) ||
!(infoMatch = M3U8ExtMatch.Match(streamInfo)).Success ||
infoMatch.Groups[1].Value != "EXT-X-STREAM-INF")
{
return(RResultCode.TwitchMalformedM3u8File.ToString());
}
var streamData = new StreamData();
// #EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=128000,CODECS="mp4a.40.2",VIDEO="audio_only"
for (int i = 0; i < infoMatch.Groups[3].Captures.Count; i++)
{
string key = infoMatch.Groups[4].Captures[i].Value.ToUpper(CultureInfo.InvariantCulture);
string value = infoMatch.Groups[5].Captures[i].Value;
switch (key)
{
case "BANDWIDTH": streamData.Bandwidth = int.Parse(value, CultureInfo.InvariantCulture); break;
case "CODECS": streamData.Codec = TextUtil.StripQuotes(value); break;
case "VIDEO":
StreamQuality quality;
if (Enum.TryParse(TextUtil.StripQuotes(value), out quality))
{
streamData.QualityType = quality;
}
else
{
streamData.QualityType = StreamQuality.unknown;
}
break;
}
}
streamData.Url = reader.ReadLine();
dataList.Add(streamData);
break;
default: break;
}
}
}
// Validation Process
if (dataList.Count <= 0)
{
return(RResultCode.TwitchNoStreamsExtracted.ToString());
}
int codec = SelectStream(dataList);
if (codec < 0)
{
return("The stream has no audio_only version.");
}
return(new PlayResource(dataList[codec].Url, resource.ResourceTitle != null ? resource : resource.WithName($"Twitch channel: {channel}")));
}
public async Task <PlayResource> GetResourceById(ResolveContext?_, AudioResource resource)
{
var channel = resource.ResourceId;
// request api token
var access = await WebWrapper
.Request($"https://api.twitch.tv/api/channels/{channel}/access_token")
.WithHeader("Client-ID", TwitchClientIdPrivate)
.AsJson <JsonAccessToken>();
// request m3u8 file
if (access is null || access.token is null || access.sig is null)
{
throw Error.LocalStr(strings.error_media_internal_invalid + " (tokenResult|sigResult)");
}
var token = Uri.EscapeUriString(access.token);
var sig = access.sig;
// guaranteed to be random, chosen by fair dice roll.
const int random = 4;
var m3u8 = await WebWrapper
.Request($"http://usher.twitch.tv/api/channel/hls/{channel}.m3u8?player=twitchweb&&token={token}&sig={sig}&allow_audio_only=true&allow_source=true&type=any&p={random}")
.AsString();
// parse m3u8 file
var dataList = new List <StreamData>();
using (var reader = new System.IO.StringReader(m3u8))
{
var header = reader.ReadLine();
if (string.IsNullOrEmpty(header) || header != "#EXTM3U")
{
throw Error.LocalStr(strings.error_media_internal_missing + " (m3uHeader)");
}
while (true)
{
var blockInfo = reader.ReadLine();
if (string.IsNullOrEmpty(blockInfo))
{
break;
}
var match = M3U8ExtMatch.Match(blockInfo);
if (!match.Success)
{
continue;
}
switch (match.Groups[1].Value)
{
case "EXT-X-TWITCH-INFO": break; // Ignore twitch info line
case "EXT-X-MEDIA":
string?streamInfo = reader.ReadLine();
Match infoMatch;
if (string.IsNullOrEmpty(streamInfo) ||
!(infoMatch = M3U8ExtMatch.Match(streamInfo)).Success ||
infoMatch.Groups[1].Value != "EXT-X-STREAM-INF")
{
throw Error.LocalStr(strings.error_media_internal_missing + " (m3uStream)");
}
var streamData = new StreamData();
// #EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=128000,CODECS="mp4a.40.2",VIDEO="audio_only"
for (int i = 0; i < infoMatch.Groups[3].Captures.Count; i++)
{
string key = infoMatch.Groups[4].Captures[i].Value.ToUpperInvariant();
string value = infoMatch.Groups[5].Captures[i].Value;
switch (key)
{
case "BANDWIDTH": streamData.Bandwidth = int.Parse(value, CultureInfo.InvariantCulture); break;
case "CODECS": streamData.Codec = TextUtil.StripQuotes(value); break;
case "VIDEO":
streamData.QualityType = Enum.TryParse(TextUtil.StripQuotes(value), out StreamQuality quality)
? quality
: StreamQuality.unknown; break;
}
}
streamData.Url = reader.ReadLine();
dataList.Add(streamData);
break;
}
}
}
// Validation Process
if (dataList.Count <= 0)
{
throw Error.LocalStr(strings.error_media_no_stream_extracted);
}
int codec = SelectStream(dataList);
if (codec < 0)
{
throw Error.LocalStr(strings.error_media_no_stream_extracted);
}
var selectedStream = dataList[codec];
if (selectedStream.Url == null)
{
throw Error.LocalStr(strings.error_media_no_stream_extracted);
}
if (resource.ResourceTitle == null)
{
resource.ResourceTitle = $"Twitch channel: {channel}";
}
return(new PlayResource(selectedStream.Url, resource));
}
public R <PlayResource, LocalStr> GetResourceById(AudioResource resource)
{
var channel = resource.ResourceId;
// request api token
if (!WebWrapper.DownloadString(out string jsonResponse, new Uri($"https://api.twitch.tv/api/channels/{channel}/access_token"), ("Client-ID", TwitchClientId)))
{
return(new LocalStr(strings.error_net_no_connection));
}
var jObj = JObject.Parse(jsonResponse);
// request m3u8 file
var tokenResult = jObj.TryCast <string>("token");
var sigResult = jObj.TryCast <string>("sig");
if (!tokenResult.Ok || !sigResult.Ok)
{
return(new LocalStr(strings.error_media_internal_invalid + " (tokenResult|sigResult)"));
}
var token = Uri.EscapeUriString(tokenResult.Value);
var sig = sigResult.Value;
// guaranteed to be random, chosen by fair dice roll.
const int random = 4;
if (!WebWrapper.DownloadString(out string m3u8, new Uri($"http://usher.twitch.tv/api/channel/hls/{channel}.m3u8?player=twitchweb&&token={token}&sig={sig}&allow_audio_only=true&allow_source=true&type=any&p={random}")))
{
return(new LocalStr(strings.error_net_no_connection));
}
// parse m3u8 file
var dataList = new List <StreamData>();
using (var reader = new System.IO.StringReader(m3u8))
{
var header = reader.ReadLine();
if (string.IsNullOrEmpty(header) || header != "#EXTM3U")
{
return(new LocalStr(strings.error_media_internal_missing + " (m3uHeader)"));
}
while (true)
{
var blockInfo = reader.ReadLine();
if (string.IsNullOrEmpty(blockInfo))
{
break;
}
var match = M3U8ExtMatch.Match(blockInfo);
if (!match.Success)
{
continue;
}
switch (match.Groups[1].Value)
{
case "EXT-X-TWITCH-INFO": break; // Ignore twitch info line
case "EXT-X-MEDIA":
string streamInfo = reader.ReadLine();
Match infoMatch;
if (string.IsNullOrEmpty(streamInfo) ||
!(infoMatch = M3U8ExtMatch.Match(streamInfo)).Success ||
infoMatch.Groups[1].Value != "EXT-X-STREAM-INF")
{
return(new LocalStr(strings.error_media_internal_missing + " (m3uStream)"));
}
var streamData = new StreamData();
// #EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=128000,CODECS="mp4a.40.2",VIDEO="audio_only"
for (int i = 0; i < infoMatch.Groups[3].Captures.Count; i++)
{
string key = infoMatch.Groups[4].Captures[i].Value.ToUpper(CultureInfo.InvariantCulture);
string value = infoMatch.Groups[5].Captures[i].Value;
switch (key)
{
case "BANDWIDTH": streamData.Bandwidth = int.Parse(value, CultureInfo.InvariantCulture); break;
case "CODECS": streamData.Codec = TextUtil.StripQuotes(value); break;
case "VIDEO":
streamData.QualityType = Enum.TryParse(TextUtil.StripQuotes(value), out StreamQuality quality)
? quality
: StreamQuality.unknown; break;
}
}
streamData.Url = reader.ReadLine();
dataList.Add(streamData);
break;
}
}
}
// Validation Process
if (dataList.Count <= 0)
{
return(new LocalStr(strings.error_media_no_stream_extracted));
}
int codec = SelectStream(dataList);
if (codec < 0)
{
return(new LocalStr(strings.error_media_no_stream_extracted));
}
return(new PlayResource(dataList[codec].Url, resource.ResourceTitle != null ? resource : resource.WithName($"Twitch channel: {channel}")));
}
public RResultCode GetResourceById(string id, string name, out AudioResource resource)
{
var channel = id;
// request api token
string jsonResponse;
if (!WebWrapper.DownloadString(out jsonResponse, new Uri($"http://api.twitch.tv/api/channels/{channel}/access_token")))
{
resource = null;
return RResultCode.NoConnection;
}
var jsonDict = (Dictionary<string, object>)jsonParser.DeserializeObject(jsonResponse);
// request m3u8 file
var token = Uri.EscapeUriString(jsonDict["token"].ToString());
var sig = jsonDict["sig"];
// guaranteed to be random, chosen by fair dice roll.
var random = 4;
string m3u8;
if (!WebWrapper.DownloadString(out m3u8, new Uri($"http://usher.twitch.tv/api/channel/hls/{channel}.m3u8?player=twitchweb&&token={token}&sig={sig}&allow_audio_only=true&allow_source=true&type=any&p={random}")))
{
resource = null;
return RResultCode.NoConnection;
}
// parse m3u8 file
var dataList = new List<StreamData>();
using (var reader = new System.IO.StringReader(m3u8))
{
var header = reader.ReadLine();
if (string.IsNullOrEmpty(header) || header != "#EXTM3U")
{
resource = null;
return RResultCode.TwitchMalformedM3u8File;
}
while (true)
{
var blockInfo = reader.ReadLine();
if (string.IsNullOrEmpty(blockInfo))
break;
var match = m3u8ExtMatch.Match(blockInfo);
if (!match.Success)
continue;
switch (match.Groups[1].Value)
{
case "EXT-X-TWITCH-INFO": break; // Ignore twitch info line
case "EXT-X-MEDIA":
string streamInfo = reader.ReadLine();
Match infoMatch;
if (string.IsNullOrEmpty(streamInfo) ||
!(infoMatch = m3u8ExtMatch.Match(streamInfo)).Success ||
infoMatch.Groups[1].Value != "EXT-X-STREAM-INF")
{
resource = null;
return RResultCode.TwitchMalformedM3u8File;
}
var streamData = new StreamData();
// #EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=128000,CODECS="mp4a.40.2",VIDEO="audio_only"
for (int i = 0; i < infoMatch.Groups[3].Captures.Count; i++)
{
string key = infoMatch.Groups[4].Captures[i].Value.ToUpper();
string value = infoMatch.Groups[5].Captures[i].Value;
switch (key)
{
case "BANDWIDTH": streamData.Bandwidth = int.Parse(value); break;
case "CODECS": streamData.Codec = TextUtil.StripQuotes(value); break;
case "VIDEO":
StreamQuality quality;
if (Enum.TryParse(TextUtil.StripQuotes(value), out quality))
streamData.QualityType = quality;
else
streamData.QualityType = StreamQuality.unknown;
break;
}
}
streamData.Url = reader.ReadLine();
dataList.Add(streamData);
break;
default: break;
}
}
}
resource = new TwitchResource(channel, name ?? $"Twitch channel: {channel}", dataList);
return dataList.Count > 0 ? RResultCode.Success : RResultCode.TwitchNoStreamsExtracted;
}
