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Search song folder for cached video containing referenced ID. #928

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Search song folder for cached video containing referenced ID. #928

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34 changes: 33 additions & 1 deletion src/base/USong.pas
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Original file line number Diff line number Diff line change
Expand Up @@ -103,6 +103,7 @@ TSong = class
FileLineNo : integer; // line, which is read last, for error reporting

function DecodeFilename(Filename: RawByteString): IPath;
function CheckForCachedVideoFile(Value: string): Boolean; // looks for a local copy of a video from an online source (v=xyzabc,…)
procedure ParseNote(Track: integer; TypeP: char; StartP, DurationP, NoteP: integer; LyricS: UTF8String; RapToFreestyle: boolean);
procedure NewSentence(LineNumberP: integer; Param1, Param2: integer);
procedure FindRefrain(); // tries to find a refrain for the medley mode and preview start
Expand Down Expand Up @@ -743,6 +744,37 @@ function StrToFloatI18n(const Value: string): extended;
Result := StrToFloatDef(TempValue, 0);
end;

{
If the Value starts with 'v=', that may refer to a video that is being hosted on a popular platform.
There might be a locally cached copy of this video. The filename should containing the video ID.
The extension must be mp4 (not m4v).
}
function TSong.CheckForCachedVideoFile(Value: string): Boolean;
var
Needle: string;
CommaPos: Integer;
Iter: IFileIterator;
FileInfo: TFileInfo;
begin
Result := False;
if Copy(Value, 1, 2) = 'v=' then
begin
CommaPos := Pos(',', Value);
if CommaPos > 0 then
Needle := Copy(Value, 3, CommaPos - 3)
else
Needle := Copy(Value, 3, Length(Value) - 2);
Log.LogInfo('Reference to online video '+Needle+' found. Looking for local mp4 copy...', 'TSong.CheckForCachedVideoFile');
Iter := FileSystem.FileFind(self.Path.Append('*'+Needle+'*.mp4'), faAnyFile);
while (Iter.HasNext and not Result) do
begin
FileInfo := Iter.Next;
self.Video := FileInfo.Name;
Result := True;
end;
end
end;

function TSong.ReadTXTHeader(SongFile: TTextFileStream; ReadCustomTags: Boolean): boolean;
var
Line, Identifier: string;
Expand Down Expand Up @@ -915,7 +947,7 @@ function TSong.ReadTXTHeader(SongFile: TTextFileStream; ReadCustomTags: Boolean)
EncFile := DecodeFilename(Value);
if (self.Path.Append(EncFile).IsFile) then
self.Video := EncFile
else
else if not CheckForCachedVideoFile(Value) then
Log.LogError('Can''t find video file in song: ' + FullFileName);
end

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