source: trunk/classes/bin/audioext.rx

/* rexx - Get the extension of audio types added using
   the multimedia setup object. For example *.FLA.
   This script is called by M_MMAudio and mmfind.exe.
*/

call RxFuncAdd 'SysLoadFuncs', 'RexxUtil', 'SysLoadFuncs'
call SysLoadFuncs

allExt=""
waveaudio=""

/* Get MMOS2 directory */
mmos2Dir=STRIP(TRANSLATE(value("MMBASE",,"OS2ENVIRONMENT")," ",";"))
if LEFT(mmos2Dir,1)='\' THEN
        mmpm2Ini=mmos2Dir||'mmpm2.ini'
else
        mmpm2Ini=mmos2Dir||'\mmpm2.ini'

if STREAM(mmpm2ini, "C", "Query exists")='' THEN DO
        /* MMPM2.INI not found */
        rc=""
        exit ""
END

/* Read ini */
a=0
DO WHILE LINES(mmpm2ini)
        a=a+1
        mmini.a=STRIP(LINEIN(mmpm2ini))
END
mmini.0=a
ret=STREAM(mmpm2ini, "C", "close")

/* Find [DRIVERS] section */
DO a=1 to mmini.0
        if ABBREV(TRANSLATE(mmini.a), "[DRIVERS]")=1 THEN DO
                call parseDrivers
                LEAVE
        END
END

if waveaudio="" THEN DO
        rc=""
        exit ""
END
/*Now we have the wave device(s) */

/* Get extensions from all devices */
tempext=""
DO b=1 to WORDS(waveaudio)
        /* We may have several waveaudio devices */
        tempExt=tempExt||' '||parseWaveDevice(WORD(waveaudio, b))
END

/* Build string and remove known extensions */
DO b=1 to WORDS(tempExt)
        curExt=WORD(tempExt,b)
        SELECT
        WHEN TRANSLATE(curExt)="MP3" THEN NOP /* Already supported by a spezialized class */
        WHEN TRANSLATE(curExt)="OGG" THEN NOP
        WHEN TRANSLATE(curExt)="FLA" THEN NOP
        WHEN TRANSLATE(curExt)="FLAC" THEN NOP
        WHEN TRANSLATE(curExt)="WAV" THEN NOP

        OTHERWISE
                if allExt\='' THEN allExt=allExt||','
                allExt=allExt||'*.'||STRIP(curExt)
        END
END
return allExt
EXIT

/**************************************/

parseDrivers:
a=a+1
DO WHILE LEFT(mmini.a,1)\='['
        IF ABBREV(TRANSLATE(mmini.a),"WAVEAUDIO")=1 THEN DO
                thePos=POS("=",mmini.a)
                if thePos=0 then return
                waveaudio=TRANSLATE(RIGHT(mmini.a, LENGTH(mmini.a)-thePos)," ",",")
                return
        END
        a=a+1
        IF a>mmini.0 THEN return
END
return

parseWavedevice:

theDevice='['ARG(1)']'
DO a=1 to mmini.0
        if ABBREV(TRANSLATE(mmini.a), TRANSLATE(theDevice))=1 THEN DO
                /* Device section found */
                a=a+1
                DO WHILE LEFT(mmini.a,1)\='['
                        IF ABBREV(TRANSLATE(mmini.a),"EXTNAMES")=1 THEN DO
                                thePos=POS("=",mmini.a)
                                if thePos=0 then return
                                ext=SUBWORD(TRANSLATE(RIGHT(mmini.a, LENGTH(mmini.a)-thePos)," ",","),2)
                                return ext
                        END
                        a=a+1
                        IF a>mmini.0 THEN return ""
                END
        END
END
return ""