Question: What's the best way to incorporate WDL_FileRead to a C written library, like ogg/vorbis? I have a few thoughts on how to but I like neither and I would like to hear your opinion on the subject. Thanks :)
Asked by gio (94.66.33.x) on November 1 2013, 2:47pm
Reply on November 1 2013, 4:06pm (edited at November 8 2013, 2:44pm):
static size_t wdlfileread_read(void *ptr, size_t size, size_t nmemb, void *fr)
{
WDL_FileRead *_fr=(WDL_FileRead *)fr;
if (!size||!_fr) return 0;
size_t v=(size_t) _fr->Read(ptr,size*nmemb);
return v/size;
}
static int wdlfileread_seek(void *fr, ogg_int64_t offset, int whence)
{
WDL_FileRead *_fr=(WDL_FileRead *)fr;
if (whence == SEEK_SET) return _fr->SetPosition(offset)?-1:0;
if (whence == SEEK_END) return _fr->SetPosition(_fr->GetSize()+offset)?-1:0;
return _fr->SetPosition(_fr->GetPosition()+offset)?-1:0;
}
static int wdlfileread_close(void *fr) { delete (WDL_FileRead *)fr; return fr?0:EOF; }
static long wdlfileread_tell(void *fr) { return (long)((WDL_FileRead *)fr)->GetPosition(); }
ov_callbacks cb={wdlfileread_read,wdlfileread_seek,wdlfileread_close,wdlfileread_tell};