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6 * it under the terms of the GNU General Public License as published by
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12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
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21 #include "PlayListM3U.h"
22 #include "filesystem/File.h"
25 #include "utils/StringUtils.h"
26 #include "utils/CharsetConverter.h"
27 #include "utils/RegExp.h"
28 #include "utils/log.h"
29 #include "utils/URIUtils.h"
30 #include "settings/AdvancedSettings.h"
31 #include "music/tags/MusicInfoTag.h"
33 using namespace PLAYLIST;
34 using namespace XFILE;
36 #define M3U_START_MARKER "#EXTM3U"
37 #define M3U_INFO_MARKER "#EXTINF"
38 #define M3U_ARTIST_MARKER "#EXTART"
39 #define M3U_ALBUM_MARKER "#EXTALB"
40 #define M3U_STREAM_MARKER "#EXT-X-STREAM-INF"
41 #define M3U_BANDWIDTH_MARKER "BANDWIDTH"
45 // #EXTART:Demo Artist
48 // E:\Program Files\Winamp3\demo.mp3
50 // E:\Program Files\Winamp3\demo.mp3
53 // example m3u8 containing streams of different bitrates
55 // #EXT-X-STREAM-INF:PROGRAM-ID=1, BANDWIDTH=1600000
57 // #EXT-X-STREAM-INF:PROGRAM-ID=1, BANDWIDTH=3000000
59 // #EXT-X-STREAM-INF:PROGRAM-ID=1, BANDWIDTH=800000
63 CPlayListM3U::CPlayListM3U(void)
66 CPlayListM3U::~CPlayListM3U(void)
70 bool CPlayListM3U::Load(const CStdString& strFileName)
74 CStdString strInfo = "";
79 m_strPlayListName = URIUtils::GetFileName(strFileName);
80 URIUtils::GetParentPath(strFileName, m_strBasePath);
83 if (!file.Open(strFileName) )
89 while (file.ReadString(szLine, 4095))
92 StringUtils::Trim(strLine);
94 if (StringUtils::StartsWith(strLine, M3U_INFO_MARKER))
97 size_t iColon = strLine.find(":");
98 size_t iComma = strLine.find(",");
99 if (iColon != std::string::npos &&
100 iComma != std::string::npos &&
103 // Read the info and duration
105 CStdString strLength = strLine.substr(iColon, iComma - iColon);
106 lDuration = atoi(strLength.c_str());
108 strInfo = strLine.substr(iComma);
109 g_charsetConverter.unknownToUTF8(strInfo);
112 else if (strLine != M3U_START_MARKER &&
113 !StringUtils::StartsWith(strLine, M3U_ARTIST_MARKER) &&
114 !StringUtils::StartsWith(strLine, M3U_ALBUM_MARKER))
116 CStdString strFileName = strLine;
118 if (strFileName.size() > 0 && strFileName[0] == '#')
119 continue; // assume a comment or something else we don't support
121 // Skip self - do not load playlist recursively
122 if (URIUtils::GetFileName(strFileName).Equals(m_strPlayListName))
125 if (strFileName.length() > 0)
127 g_charsetConverter.unknownToUTF8(strFileName);
129 // If no info was read from from the extended tag information, use the file name
130 if (strInfo.length() == 0)
132 strInfo = URIUtils::GetFileName(strFileName);
135 // should substitition occur befor or after charset conversion??
136 strFileName = URIUtils::SubstitutePath(strFileName);
138 // Get the full path file name and add it to the the play list
139 CUtil::GetQualifiedFilename(m_strBasePath, strFileName);
140 CFileItemPtr newItem(new CFileItem(strInfo));
141 newItem->SetPath(strFileName);
142 if (lDuration && newItem->IsAudio())
143 newItem->GetMusicInfoTag()->SetDuration(lDuration);
146 // Reset the values just in case there part of the file have the extended marker
158 void CPlayListM3U::Save(const CStdString& strFileName) const
160 if (!m_vecItems.size())
162 CStdString strPlaylist = CUtil::MakeLegalPath(strFileName);
164 if (!file.OpenForWrite(strPlaylist,true))
166 CLog::Log(LOGERROR, "Could not save M3U playlist: [%s]", strPlaylist.c_str());
169 CStdString strLine = StringUtils::Format("%s\n",M3U_START_MARKER);
170 file.Write(strLine.c_str(),strLine.size());
171 for (int i = 0; i < (int)m_vecItems.size(); ++i)
173 CFileItemPtr item = m_vecItems[i];
174 CStdString strDescription=item->GetLabel();
175 g_charsetConverter.utf8ToStringCharset(strDescription);
176 strLine = StringUtils::Format( "%s:%i,%s\n", M3U_INFO_MARKER, item->GetMusicInfoTag()->GetDuration() / 1000, strDescription.c_str() );
177 file.Write(strLine.c_str(),strLine.size());
178 CStdString strFileName = ResolveURL(item);
179 g_charsetConverter.utf8ToStringCharset(strFileName);
180 strLine = StringUtils::Format("%s\n",strFileName.c_str());
181 file.Write(strLine.c_str(),strLine.size());
186 CStdString CPlayListM3U::GetBestBandwidthStream(const CStdString &strFileName, size_t bandwidth)
188 // we may be passed a playlist that does not contain playlists of different
189 // bitrates (eg: this playlist is really the HLS video). So, default the
190 // return to the filename so it can be played
193 size_t maxBandwidth = 0;
195 // open the file, and if it fails, return
197 if (!file.Open(strFileName) )
203 // get protocol options if they were set, so we can restore them again at the end
204 CURL playlistUrl(strFileName);
206 // and set the fallback value
207 CURL subStreamUrl = CURL(strFileName);
209 // determine the base
210 CURL basePlaylistUrl(URIUtils::GetParentPath(strFileName));
211 basePlaylistUrl.SetOptions("");
212 basePlaylistUrl.SetProtocolOptions("");
213 CStdString basePart = basePlaylistUrl.Get();
215 // convert bandwidth specified in kbps to bps used by the m3u8
218 while (file.ReadString(szLine, 1024))
220 // read and trim a line
222 StringUtils::Trim(strLine);
224 // skip the first line
225 if (strLine == M3U_START_MARKER)
227 else if (StringUtils::StartsWith(strLine, M3U_STREAM_MARKER))
229 // parse the line so we can pull out the bandwidth
230 std::map< CStdString, CStdString > params = ParseStreamLine(strLine);
231 std::map< CStdString, CStdString >::iterator it = params.find(M3U_BANDWIDTH_MARKER);
233 if (it != params.end())
235 size_t streamBandwidth = atoi(it->second.c_str());
236 if ((maxBandwidth < streamBandwidth) && (streamBandwidth <= bandwidth))
238 // read the next line
239 if (!file.ReadString(szLine, 1024))
243 StringUtils::Trim(strLine);
245 // this line was empty
249 // store the max bandwidth
250 maxBandwidth = streamBandwidth;
252 // if the path is absolute just use it
253 if (CURL::IsFullPath(strLine))
254 subStreamUrl = CURL(strLine);
256 subStreamUrl = CURL(basePart + strLine);
262 // if any protocol options were set, restore them
263 subStreamUrl.SetProtocolOptions(playlistUrl.GetProtocolOptions());
264 return subStreamUrl.Get();
267 std::map< CStdString, CStdString > CPlayListM3U::ParseStreamLine(const CStdString &streamLine)
269 std::map< CStdString, CStdString > params;
271 // ensure the line has something beyond the stream marker and ':'
272 if (strlen(streamLine) < strlen(M3U_STREAM_MARKER) + 2)
275 // get the actual params following the :
276 CStdString strParams(streamLine.substr(strlen(M3U_STREAM_MARKER) + 1));
278 // separate the parameters
279 CStdStringArray vecParams = StringUtils::SplitString(strParams, ",");
280 for (size_t i = 0; i < vecParams.size(); i++)
282 // split the param, ensure there was an =
283 StringUtils::Trim(vecParams[i]);
284 CStdStringArray vecTuple = StringUtils::SplitString(vecParams[i], "=");
285 if (vecTuple.size() < 2)
288 // remove white space from name and value and store it in the dictionary
289 StringUtils::Trim(vecTuple[0]);
290 StringUtils::Trim(vecTuple[1]);
291 params[vecTuple[0]] = vecTuple[1];