TRANP2S

TRANP2S: OP_P2S

The TRANP2S structure contains the parameters for the OP_P2S opcode used for loss-less conversion of a progressive JPEG image to a sequential JPEG image.

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typedef struct { DWORD Reserved0; BYTE PICHUGE* Reserved1; BYTE PICHUGE* Reserved2; BYTE PICHUGE* Reserved3; BYTE PICHUGE* Reserved4; BYTE PICHUGE* Reserved5; BYTE PICHUGE* Reserved6; BYTE PICHUGE* Reserved7; BYTE PICHUGE* Reserved8; PICFLAGS PicFlags; PICFLAGS PicFlags2; LONG NumScansReq; LONG NumScansDone; LONG NumBytesDone; SUBSAMPLING SubSampling; } TRANP2S;

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typedef struct {
   DWORD                Reserved0;
   BYTE PICHUGE*        Reserved1;
   BYTE PICHUGE*        Reserved2;
   BYTE PICHUGE*        Reserved3;
   BYTE PICHUGE*        Reserved4;
   BYTE PICHUGE*        Reserved5;
   BYTE PICHUGE*        Reserved6;
   BYTE PICHUGE*        Reserved7;
   BYTE PICHUGE*        Reserved8;
   PICFLAGS             PicFlags;
   PICFLAGS             PicFlags2;
   LONG                 NumScansReq;
   LONG                 NumScansDone;
   LONG                 NumBytesDone;
   SUBSAMPLING          SubSampling;
} TRANP2S;

Fields:

Name	Description
Reserved0 Reserved1 Reserved2 Reserved3 Reserved4 Reserved5 Reserved6 Reserved7 Reserved8 PicFlags PicFlags2	These fields are not currently used.
NumScansReq	Number of progressive JPEG scans to decode.
NumScansDone	Number of scans actually completed.
NumBytesDone	Number of bytes in the completed scans.
SubSampling	Indicates the subsampling as detected by the opcode.