IImageStream.h

//========================================================================================
// 
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// Owner: jargast
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// Copyright 1997-2010 Adobe Systems Incorporated. All rights reserved.
// 
// NOTICE: Adobe permits you to use, modify, and distribute this file in accordance 
// with the terms of the Adobe license agreement accompanying it. If you have received
// this file from a source other than Adobe, then your use, modification, or 
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//========================================================================================

#ifndef __IImageStream__
#define __IImageStream__

#include "IPMUnknown.h"
#include "ImageID.h"

#define BYTES2ROWBYTES(x) ((((uint32)(x) + 3) >> 2) << 2)
#define BITS2ROWBYTES(x) ((((uint32)(x) + 31) >> 5) << 2)

typedef struct
{
 uint8* fBuffer; // preallocated buffer with size = fRowBytes * fHeight;
 uint32 fTop;
 uint32 fLeft;
 uint32 fWidth; // Image Width, must be <= fRowBytes
 uint32 fHeight;
 uint32 fRowBytes; // number of bytes in a row (desirable to be a multiple of 4)
 uint32 fPlane; // index of color plane to return. This only applies if the
 // destination configuration is planar. If chunky, this field
 // is ignored.
} ImageStreamRecord;

class IImageStream : public IPMUnknown
{
public:
 enum { kDefaultIID = IID_IIMAGESTREAM };

 virtual bool16 ReadData (ImageStreamRecord &outRecord) = 0; 
};


#endif