Mercurial > hg > aim92
view stitch/source.h @ 0:5242703e91d3 tip
Initial checkin for AIM92 aimR8.2 (last updated May 1997).
| author | tomwalters |
|---|---|
| date | Fri, 20 May 2011 15:19:45 +0100 |
| parents | |
| children |
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/* source.h ======== */ #ifndef _SOURCE_H_ #define _SOURCE_H_ #include "buffer.h" /* standard entry points */ #define PullSome( _source, _bytes ) ( _SPTR( _source )->returned = _SPTR( _source )->pull( _SPTR( _source ), (ByteCount *) ( _bytes ) ) ) #define FillSome( _source, _bytes, _buffer ) ( _SPTR( _source )->returned = _SPTR( _source )->fill( _SPTR( _source ), (ByteCount *) ( _bytes ), (Pointer ) ( _buffer ) ) ) #define RollSome( _source, _bytes, _kept ) ( _SPTR( _source )->returned = _SPTR( _source )->roll( _SPTR( _source ), (ByteCount *) ( _bytes ), (ByteCount) ( _kept ) ) ) /* for compatability */ #define Pull( _source, _bytes ) ( _SPTR( _source )->returned = oldPull( _SPTR( _source ), (ByteCount ) ( _bytes ) ) ) #define Fill( _source, _bytes, _buffer ) ( _SPTR( _source )->returned = oldFill( _SPTR( _source ), (ByteCount ) ( _bytes ), (Pointer ) ( _buffer ) ) ) #define Roll( _source, _bytes, _kept ) ( _SPTR( _source )->returned = oldRoll( _SPTR( _source ), (ByteCount ) ( _bytes ), (ByteCount) ( _kept ) ) ) /* for more compatability */ #define Shift( _source, _bytes, _kept ) Roll( _source, _bytes, _kept ) /* count conversions */ #define ToPoints( _type, _bytes ) ( ( _bytes ) >> ( sizeof(_type) >> 1 ) ) #define ToBytes( _type, _points ) ( ( char *) ( (_type *) 0l + ( _points ) ) - ( char *) 0l ) /* for convenience */ #define PullItems( _source, _number, _type ) ( (_type *) Pull( _source, ToBytes( _type, _number ) ) ) #define PullChars( _source, _number ) PullItems( _source, _number, char ) #define PullShorts( _source, _number ) PullItems( _source, _number, short ) #define PullInts( _source, _number ) PullItems( _source, _number, int ) #define PullDoubles( _source, _number ) PullItems( _source, _number, double ) #define FillItems( _source, _number, _buffer, _type ) ( (_type *) Fill( _source, ToBytes( _type, _number ), (Pointer) ( _buffer ) ) ) #define FillChars( _source, _number, _buffer ) FillItems( _source, _number, _buffer, char ) #define FillShorts( _source, _number, _buffer ) FillItems( _source, _number, _buffer, short ) #define FillInts( _source, _number, _buffer ) FillItems( _source, _number, _buffer, int ) #define FillDoubles( _source, _number, _buffer ) FillItems( _source, _number, _buffer, double ) #define RollItems( _source, _number, _keep, _type ) ( (_type *) Roll( _source, ToBytes( _type, _number ), ( _keep ) * sizeof ( _type ) ) ) #define RollChars( _source, _number, _keep ) RollItems( _source, _number, _keep, char ) #define RollShorts( _source, _number, _keep ) RollItems( _source, _number, _keep, short ) #define RollInts( _source, _number, _keep ) RollItems( _source, _number, _keep, int ) #define RollDoubles( _source, _number, _keep ) RollItems( _source, _number, _keep, double ) /* operators on sources */ #define SetSource( _src, _puller, _filler, _roller, _name ) setSource( (struct _source *) _src, _puller, _filler, _roller, _name ) #define TypeSource( _src, _type ) typeSource( (struct _source *) _src, _type ) #define SourceType( _src ) sourceType( (struct _source *) _src ) #define SourceName( _src ) sourceName( (struct _source *) _src ) #define DeleteSource( _src ) deleteSource( (struct _source *) _src ) #if 00 #define NameOfClass BasicSourceClass #define SetSource( _source, _puller, _filler, _roller, _name ) NameOfClass.set( (struct _source *) _source, _puller, _filler, _roller, _name ) #define TypeSource( _source, _type ) NameOfClass.setType( (struct _source *) _source, _type ) #define SourceType( _source ) NameOfClass.getType( (struct _source *) _source ) #define SourceName( _source ) NameOfClass.getName( (struct _source *) _source ) #define DeleteSource( _source ) NameOfClass.delete( (struct _source *) _source ) #endif #define SinkSource( _source, _framebytes , _frames ) \ sinkSource( _source, (ByteCount) ( _framebytes ), (long) _frames ) #define SinkAndCloseSource( _source, _framebytes , _frames ) \ sinkAndCloseSource( _source, (ByteCount) ( _framebytes ), (long) _frames ) /* moving towards buffer abstraction, slowly */ #define SourceBuffer( _source ) ( ( _source )->buffer ) #define SetSourceBuffer( _source, _buffer ) ( ( _source )->buffer = _buffer ) /* only pure source */ #define NewTappingSource( _source , _state, _callback, _close, _name ) \ newTappingSource( (Pointer) ( _source ), _state, _callback, _close, _name ) #define NewRollableSource( _source ) \ newRollableSource( _source ) #if 0 /* for compatability */ #define NewShiftableSource( _source ) \ NewRollableSource( _source ) #endif /* for binding with C++ perhaps someday */ #if defined(__cplusplus) || defined(c_plusplus) #define CPLPL 1 #else #define CPLPL 0 #endif #if CPLPL #define _SPTR( _s ) ((_s).ptr) #define _MANY_ARGS ... #define _ONE_SOURCE Source source #define _TWO_SOURCES Source source1, Source source2 #define _ONE_SOURCE_PLUS Source source... typedef class _source &Source ; /* ?? or something */ #else #define _SPTR( _s ) _s #define _MANY_ARGS /* ... */ #define _ONE_SOURCE /* Source source */ #define _TWO_SOURCES /* Source source1, Source source2 */ #define _ONE_SOURCE_PLUS /* Source source... */ /* basic types */ typedef struct _source *Source, *SourceArray[1] ; #endif typedef Source CharSource, ShortSource, IntSource, FloatSource, DoubleSource, ComplexSource ; typedef SourceArray CharSourceArray, ShortSourceArray, IntSourceArray, FloatSourceArray, DoubleSourceArray, ComplexSourceArray ; typedef int ByteCount ; /* dependant on type of source */ struct _source { Pointer (*pull)(), (*fill)(), (*roll)(), returned ; char *name, *type ; int opened ; Source (*open)() ; } ; struct _source_operators { Source (*set)() ; Pointer (*delete)() ; Source (*setType)() ; char *(*getType)() ; char *(*getName)() ; } ; struct _pullable_source { struct _source parent ; } ; struct _fillable_source { struct _source parent ; Buffer buffer ; } ; #if 00 extern struct _source_operators NameOfClass ; extern struct _source *call_conversions ; #endif extern Source setSource() ; extern Source typeSource() ; extern char *sourceType() ; extern char *sourceName() ; extern Pointer deleteSource() ; extern Pointer oldPull(), oldFill(), oldRoll() ; extern void sinkSource() ; extern void CloseSource() ; extern void sinkAndCloseSource() ; /* derived source types for different purposes */ extern Source newTappingSource() ; extern Source newRollableSource() ; extern Pointer nonRoller() ; #include "pullable.h" #include "fillable.h" extern Source *BindSources() ; /* for compatability... for now */ extern Source stdStaticSource() ; extern Source stdSlaveSource() ; extern Source stdAutoSource() ; extern Source stdSelfSource() ; #endif extern Source EmptySource ;