Metadata tag names for IPC_GET_EXTENDED_FILE_INFO

[hermitx]

Hello. I'm playing around with the Winamp API and making a nowplaying dll for mIRC.

It's going pretty well, I'd just like to know if there's a complete list of values used for the IPC_GET_EXTENDED_FILE_INFO metadata.

Thanks in advance.

[Benski]

Support varies a bit per filetype, and obviously the information is only as good as the metadata of the file.

But here are the most common peices of metadata

• title
• artist
• albumartist
• album
• genre
• year
• disc
• publisher
• comment
• track
• composer
• conductor

[hermitx]

Thanks for the fast reply.

Since it's so convenient to use IPC_GET_EXTENDED_FILE_INFO to get things, I was hoping to get everything I can with it. In particular, in addition to what you've mentioned, are bitrate, encoding format, length. Are these supported? A complete list would be nice. =]

Also, is Winamp able to report these info in UTF8?

[Joel]

Yes, they are, all those are in the sdk
Simple messages, like IPC_GETOUTPUTTIME, IPC_GETINFO , etc.

[Benski]

Sorry, yes there are others. I was listing items that are part of the tagging system (e.g. ID3) but yes things like bitrate can be queried

• bitrate
• length
• type (0 for audio 1 for video)
• family (brief description of the file format)

In the newest (beta) SDK, there is IPC_GET_EXTENDED_FILE_INFOW which will give you UTF-16. It is recommended to use this instead. Except for a small handful of legacy file formats, IPC_GET_EXTENDED_FILE_INFO actually calls IPC_GET_EXTENDED_FILE_INFOW and then converts the UTF-16 data to the local code page.

code:


typedef struct {

  const wchar_t *filename;

  const wchar_t *metadata;

  wchar_t *ret;

  size_t retlen;

} extendedFileInfoStructW;



#define IPC_GET_EXTENDED_FILE_INFOW 3026 

/* (requires Winamp 5.13+)

** Pass a pointer to the above struct in wParam

*/

an example:

code:


wchar_t value[512];

extendedFileInfoStructW efs;

efs.filename=L"c:\\program files\\winamp\\demo.mp3";

efs.metadata=L"artist";

efs.ret=value;

efs.retlen=512;

  SendMessage(plugin.hwndWinampParent,WM_WA_IPC,(WPARAM)&efs,IPC_GET_EXTENDED_FILE_INFOW);

[PeppeLePew]

Originally posted by Benski
...
an example:

code:


wchar_t value[512];

extendedFileInfoStructW efs;

efs.filename=L"c:\\program files\\winamp\\demo.mp3";

efs.metadata=L"artist";

efs.ret=value;

efs.retlen=512;

  SendMessage(plugin.hwndWinampParent,WM_WA_IPC,(WPARAM)&efs,IPC_GET_EXTENDED_FILE_INFOW);

Thanks for posting the sample code I was looking for a long while to find any documentation to that feature