/* AmigaE MorphOS Reggae example ghh 2023 */
/* scale picture scale.filter */
OPT MORPHOS, PREPROCESS

MODULE 'dos/dos','dos/rdargs','intuition/classes','amigaLib/boopsi'  /* doMethodA() */
MODULE 'multimedia','classes/multimedia/multimedia','classes/multimedia/video'
MODULE 'exec/libraries'

ENUM ERR_NONE,ERR_MMCL,ERR_MMSF,ERR_MMFO

DEF scalefilterbase:PTR TO lib
DEF fileoutputbase:PTR TO lib

PROC scalefilterFunc()
  DEF streamobj:PTR TO object,scaleobj:PTR TO object,
      codecobj:PTR TO object,outputobj:PTR TO object
  DEF outname[16]:STRING
  DEF fns[256]:STRING
  DEF template
  template:= 'WIDTH 160 HEIGHT 120 MODE 2'           /* string pro scale.filter MUSI mit tento tvar */
                                                     /* 0 - Box 1 - Triangle  2 - Bell 3 - B-Spline */
                                                     /* 4 - Bilinear 5 - Lanczos  6 - Mitchell */
  StringF(fns,'ram:pic.png')                         /* orig obrazek */
  StringF(outname,'ram:scaled.jpg')                  /* vysledny obrazek */

  IF streamobj:=MediaNewObjectTagList([MMA_StreamType,'file.stream',             /* ma jen jeden port 0 pro output */
                                       MMA_StreamName,fns,                       /* string */
                                       MMA_Decode,1,                             /* ne TRUE ale 1 pozn ghh */
                                       MMA_Recognition,MMREC_LIGHT,              /* nebo MMREC_HEAVY */
                                       MMA_MediaType,MMT_PICTURE,NIL])

    IF (scaleobj:= NewObjectA(NIL,'scale.filter',[MMA_Arguments,template, NIL])) /* zmensit-zvetsit obrazek */
      IF (MediaConnectTagList(scaleobj,0,streamobj,0,[NIL]))                     /* propojit scaleobj (port 0 - input) a streamobj (port 0 vyjimka viz vyse) */
        IF (codecobj:= MediaBuildFromArgsTagList('jpeg',scaleobj,1,[NIL]))       /* format vystupu a zaroven propojení se scaleobj (port 1 - output) */
          IF (outputobj:= NewObjectA(NIL,'file.output',                          /* zapsat na disk */
                                    [MMA_TaskPriority,0,
                                     MMA_StreamName, outname, NIL]))             /* string */
            IF (MediaConnectTagList(codecobj,1,outputobj,0,[NIL]))
              doMethodA(outputobj,[MMM_SignalAtEnd,FindTask(NIL),SIGBREAKB_CTRL_C,NIL]) /* proces se da prerusit stiskem ctrl+c */
              doMethodA(outputobj,[MMM_Play,NIL])                                /* spusti "akci" zapis */
              Wait(SIGBREAKF_CTRL_C)
            ENDIF
            DisposeObject(outputobj)
          ENDIF
          DisposeObject(codecobj)
        ENDIF
      ENDIF
      DisposeObject(scaleobj)
    ENDIF
    DisposeObject(streamobj)
  ELSE
    WriteF('Reggae was unable to decode buffer.\n')
  ENDIF
ENDPROC

PROC main() HANDLE

  IF (multimediabase:=  OpenLibrary('multimedia/multimedia.class',52))=NIL THEN Raise(ERR_MMCL)
  IF (scalefilterbase:= OpenLibrary('multimedia/scale.filter',51))=NIL THEN Raise(ERR_MMSF)
  IF (fileoutputbase:=  OpenLibrary('multimedia/file.output',52))=NIL THEN Raise(ERR_MMFO)

  scalefilterFunc()

EXCEPT DO
  IF (multimediabase) THEN CloseLibrary(multimediabase)
  IF (scalefilterbase) THEN CloseLibrary(scalefilterbase)
  IF (fileoutputbase) THEN CloseLibrary(fileoutputbase)

  SELECT exception          /* hlaseni chyb */
   CASE ERR_MMCL
     WriteF('Error: Could not open multimedia.class\n')
   CASE ERR_MMSF
     WriteF('Error: Could not open multimedia/scale.filter\n')
   CASE ERR_MMFO
     WriteF('Error: Could not open multimedia/file.output\n')
  ENDSELECT
ENDPROC