prMALError 
SDKOpenFile8(
	imStdParms		*stdParms, 
	imFileRef		*SDKfileRef, 
	imFileOpenRec8	*SDKfileOpenRec8)
{
	prMALError			result = malNoError;

	ImporterLocalRec8H	localRecH = NULL;
	ImporterLocalRec8Ptr localRecP = NULL;

	if(SDKfileOpenRec8->privatedata)
	{
		localRecH = (ImporterLocalRec8H)SDKfileOpenRec8->privatedata;

		stdParms->piSuites->memFuncs->lockHandle(reinterpret_cast<char**>(localRecH));

		localRecP = reinterpret_cast<ImporterLocalRec8Ptr>( *localRecH );
	}
	else
	{
		localRecH = (ImporterLocalRec8H)stdParms->piSuites->memFuncs->newHandle(sizeof(ImporterLocalRec8));
		SDKfileOpenRec8->privatedata = (PrivateDataPtr)localRecH;

		stdParms->piSuites->memFuncs->lockHandle(reinterpret_cast<char**>(localRecH));

		localRecP = reinterpret_cast<ImporterLocalRec8Ptr>( *localRecH );
		
		localRecP->vf = NULL;
		localRecP->opus = NULL;
		localRecP->flac = NULL;
		
		localRecP->importerID = SDKfileOpenRec8->inImporterID;
		localRecP->fileType = SDKfileOpenRec8->fileinfo.filetype;
	}


	SDKfileOpenRec8->fileinfo.fileref = *SDKfileRef = reinterpret_cast<imFileRef>(imInvalidHandleValue);


	if(localRecP)
	{
		const prUTF16Char *path = SDKfileOpenRec8->fileinfo.filepath;
	
	#ifdef PRWIN_ENV
		HANDLE fileH = CreateFileW(path,
									GENERIC_READ,
									FILE_SHARE_READ,
									NULL,
									OPEN_EXISTING,
									FILE_ATTRIBUTE_NORMAL,
									NULL);
									
		if(fileH != imInvalidHandleValue)
		{
			SDKfileOpenRec8->fileinfo.fileref = *SDKfileRef = fileH;
		}
		else
			result = imFileOpenFailed;
	#else
		FSIORefNum refNum = CAST_REFNUM(imInvalidHandleValue);
				
		CFStringRef filePathCFSR = CFStringCreateWithCharacters(NULL, path, prUTF16CharLength(path));
													
		CFURLRef filePathURL = CFURLCreateWithFileSystemPath(NULL, filePathCFSR, kCFURLPOSIXPathStyle, false);
		
		if(filePathURL != NULL)
		{
			FSRef fileRef;
			Boolean success = CFURLGetFSRef(filePathURL, &fileRef);
			
			if(success)
			{
				HFSUniStr255 dataForkName;
				FSGetDataForkName(&dataForkName);
			
				OSErr err = FSOpenFork(	&fileRef,
										dataForkName.length,
										dataForkName.unicode,
										fsRdWrPerm,
										&refNum);
			}
										
			CFRelease(filePathURL);
		}
									
		CFRelease(filePathCFSR);

		if(CAST_FILEREF(refNum) != imInvalidHandleValue)
		{
			SDKfileOpenRec8->fileinfo.fileref = *SDKfileRef = CAST_FILEREF(refNum);
		}
		else
			result = imFileOpenFailed;
	#endif

	}

	if(result == malNoError)
	{
		localRecP->fileType = SDKfileOpenRec8->fileinfo.filetype;
		
		assert(0 == ogg_tell_func(static_cast<void *>(*SDKfileRef)));
			
		if(localRecP->fileType == Ogg_filetype)
		{
			localRecP->vf = new OggVorbis_File;
		
			OggVorbis_File &vf = *localRecP->vf;
			
			int ogg_err = ov_open_callbacks(static_cast<void *>(*SDKfileRef), &vf, NULL, 0, g_ov_callbacks);
			
			if(ogg_err == OV_OK)
			{
				if( ov_streams(&vf) == 0 )
				{
					result = imFileHasNoImportableStreams;
					
					ov_clear(&vf);
				}
				else if( !ov_seekable(&vf) )
				{
					result = imBadFile;
				}
			}
			else
				result = imBadHeader;
		}
		else if(localRecP->fileType == Opus_filetype)
		{
			int _error = 0;
			
			localRecP->opus = op_open_callbacks(static_cast<void *>(*SDKfileRef), &g_opusfile_callbacks, NULL, 0, &_error);
			
			if(localRecP->opus != NULL && _error == 0)
			{
				assert(op_link_count(localRecP->opus) == 1); // we're not really handling multi-link scenarios
			}
			else
				result = imBadHeader;
		}
		else if(localRecP->fileType == FLAC_filetype)
		{
			try
			{
				localRecP->flac = new OurDecoder(*SDKfileRef);
				
				localRecP->flac->set_md5_checking(true);
				
				FLAC__StreamDecoderInitStatus init_status = localRecP->flac->init();
				
				assert(init_status == FLAC__STREAM_DECODER_INIT_STATUS_OK && localRecP->flac->is_valid());
				
				bool ok = localRecP->flac->process_until_end_of_metadata();
				
				assert(ok);
			}
			catch(...)
			{
				result = imBadHeader;
			}
		}
	}
	
	// close file and delete private data if we got a bad file
	if(result != malNoError)
	{
		if(SDKfileOpenRec8->privatedata)
		{
			stdParms->piSuites->memFuncs->disposeHandle(reinterpret_cast<PrMemoryHandle>(SDKfileOpenRec8->privatedata));
			SDKfileOpenRec8->privatedata = NULL;
		}
	}
	else
	{
		stdParms->piSuites->memFuncs->unlockHandle(reinterpret_cast<char**>(SDKfileOpenRec8->privatedata));
	}

	return result;
}
prMALError 
SDKOpenFile8(
	imStdParms		*stdParms, 
	imFileRef		*SDKfileRef, 
	imFileOpenRec8	*SDKfileOpenRec8)
{
	prMALError			result = malNoError;

	ImporterLocalRec8H	localRecH = NULL;
	ImporterLocalRec8Ptr localRecP = NULL;

	if(SDKfileOpenRec8->privatedata)
	{
		localRecH = (ImporterLocalRec8H)SDKfileOpenRec8->privatedata;

		stdParms->piSuites->memFuncs->lockHandle(reinterpret_cast<char**>(localRecH));

		localRecP = reinterpret_cast<ImporterLocalRec8Ptr>( *localRecH );
	}
	else
	{
		localRecH = (ImporterLocalRec8H)stdParms->piSuites->memFuncs->newHandle(sizeof(ImporterLocalRec8));
		SDKfileOpenRec8->privatedata = (PrivateDataPtr)localRecH;

		stdParms->piSuites->memFuncs->lockHandle(reinterpret_cast<char**>(localRecH));

		localRecP = reinterpret_cast<ImporterLocalRec8Ptr>( *localRecH );
		
		localRecP->reader = NULL;
		localRecP->file = NULL;
		localRecP->audio_track = NULL;
		localRecP->alac = NULL;
		
		localRecP->importerID = SDKfileOpenRec8->inImporterID;
		localRecP->fileType = SDKfileOpenRec8->fileinfo.filetype;
	}


	SDKfileOpenRec8->fileinfo.fileref = *SDKfileRef = reinterpret_cast<imFileRef>(imInvalidHandleValue);


	if(localRecP)
	{
		const prUTF16Char *path = SDKfileOpenRec8->fileinfo.filepath;
	
	#ifdef PRWIN_ENV
		HANDLE fileH = CreateFileW(path,
									GENERIC_READ,
									FILE_SHARE_READ,
									NULL,
									OPEN_EXISTING,
									FILE_ATTRIBUTE_NORMAL,
									NULL);
									
		if(fileH != imInvalidHandleValue)
		{
			SDKfileOpenRec8->fileinfo.fileref = *SDKfileRef = fileH;
		}
		else
			result = imFileOpenFailed;
	#else
		FSIORefNum refNum = CAST_REFNUM(imInvalidHandleValue);
				
		CFStringRef filePathCFSR = CFStringCreateWithCharacters(NULL, path, prUTF16CharLength(path));
													
		CFURLRef filePathURL = CFURLCreateWithFileSystemPath(NULL, filePathCFSR, kCFURLPOSIXPathStyle, false);
		
		if(filePathURL != NULL)
		{
			FSRef fileRef;
			Boolean success = CFURLGetFSRef(filePathURL, &fileRef);
			
			if(success)
			{
				HFSUniStr255 dataForkName;
				FSGetDataForkName(&dataForkName);
			
				OSErr err = FSOpenFork(	&fileRef,
										dataForkName.length,
										dataForkName.unicode,
										fsRdPerm,
										&refNum);
			}
										
			CFRelease(filePathURL);
		}
									
		CFRelease(filePathCFSR);

		if(CAST_FILEREF(refNum) != imInvalidHandleValue)
		{
			SDKfileOpenRec8->fileinfo.fileref = *SDKfileRef = CAST_FILEREF(refNum);
		}
		else
			result = imFileOpenFailed;
	#endif

	}

	if(result == malNoError)
	{
		localRecP->fileType = SDKfileOpenRec8->fileinfo.filetype;
		
		try
		{
			localRecP->reader = new My_ByteStream(*SDKfileRef);
			
			localRecP->file = new AP4_File(*localRecP->reader);
			
			
			AP4_Track *audio_track = localRecP->file->GetMovie()->GetTrack(AP4_Track::TYPE_AUDIO);
			
			if(audio_track != NULL)
			{
				assert(audio_track->GetSampleDescriptionCount() == 1);
				
				AP4_SampleDescription *desc = audio_track->GetSampleDescription(0);
				
				AP4_AudioSampleDescription *audio_desc = AP4_DYNAMIC_CAST(AP4_AudioSampleDescription, desc);
				
				if(desc != NULL && desc->GetFormat() == AP4_SAMPLE_FORMAT_ALAC)
				{
					localRecP->audio_track = audio_track;
					
					ALAC_Atom *alac_atom = AP4_DYNAMIC_CAST(ALAC_Atom, desc->GetDetails().GetChild(AP4_SAMPLE_FORMAT_ALAC));
					
					if(alac_atom != NULL)
					{
						size_t magic_cookie_size = 0;
						
						void *magic_cookie = alac_atom->GetMagicCookie(magic_cookie_size);
						
						if(magic_cookie != NULL && magic_cookie_size > 0)
						{
							localRecP->alac = new ALACDecoder();
							
							int32_t alac_result = localRecP->alac->Init(magic_cookie, magic_cookie_size);
							
							if(alac_result != 0)
							{
								result = imBadHeader;
							}
						}
						else
							result = imBadHeader;
					}
					else
						result = imBadHeader;
				}
				else
					result = imUnsupportedCompression;
			}
			else
				result = imFileHasNoImportableStreams;
		}
		catch(...)
		{
			result = imBadFile;
		}
	}
	
	// close file and delete private data if we got a bad file
	if(result != malNoError)
	{
		if(SDKfileOpenRec8->privatedata)
		{
			stdParms->piSuites->memFuncs->disposeHandle(reinterpret_cast<PrMemoryHandle>(SDKfileOpenRec8->privatedata));
			SDKfileOpenRec8->privatedata = NULL;
		}
	}
	else
	{
		stdParms->piSuites->memFuncs->unlockHandle(reinterpret_cast<char**>(SDKfileOpenRec8->privatedata));
	}

	return result;
}