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      1 /*****************************************************************************/
      2 // Copyright 2011 Adobe Systems Incorporated
      3 // All Rights Reserved.
      4 //
      5 // NOTICE:  Adobe permits you to use, modify, and distribute this file in
      6 // accordance with the terms of the Adobe license agreement accompanying it.
      7 /*****************************************************************************/
      8 
      9 /* $Id: //mondo/dng_sdk_1_4/dng_sdk/source/dng_jpeg_image.h#1 $ */
     10 /* $DateTime: 2012/05/30 13:28:51 $ */
     11 /* $Change: 832332 $ */
     12 /* $Author: tknoll $ */
     13 
     14 /*****************************************************************************/
     15 
     16 #ifndef __dng_jpeg_image__
     17 #define __dng_jpeg_image__
     18 
     19 /*****************************************************************************/
     20 
     21 #include "dng_auto_ptr.h"
     22 #include "dng_memory.h"
     23 #include "dng_point.h"
     24 
     25 /*****************************************************************************/
     26 
     27 typedef AutoPtr<dng_memory_block> dng_jpeg_image_tile_ptr;
     28 
     29 /*****************************************************************************/
     30 
     31 class dng_jpeg_image
     32 	{
     33 
     34 	public:
     35 
     36 		dng_point fImageSize;
     37 
     38 		dng_point fTileSize;
     39 
     40 		bool fUsesStrips;
     41 
     42 		AutoPtr<dng_memory_block> fJPEGTables;
     43 
     44 		AutoArray<dng_jpeg_image_tile_ptr> fJPEGData;
     45 
     46 	public:
     47 
     48 		dng_jpeg_image ();
     49 
     50 		uint32 TilesAcross () const
     51 			{
     52 			if (fTileSize.h)
     53 				{
     54 				return (fImageSize.h + fTileSize.h - 1) / fTileSize.h;
     55 				}
     56 			else
     57 				{
     58 				return 0;
     59 				}
     60 			}
     61 
     62 		uint32 TilesDown () const
     63 			{
     64 			if (fTileSize.v)
     65 				{
     66 				return (fImageSize.v + fTileSize.v - 1) / fTileSize.v;
     67 				}
     68 			else
     69 				{
     70 				return 0;
     71 				}
     72 			}
     73 
     74 		uint32 TileCount () const
     75 			{
     76 			return TilesAcross () * TilesDown ();
     77 			}
     78 
     79 		void Encode (dng_host &host,
     80 					 const dng_negative &negative,
     81 					 dng_image_writer &writer,
     82 					 const dng_image &image);
     83 
     84 		dng_fingerprint FindDigest (dng_host &host) const;
     85 
     86 	};
     87 
     88 /*****************************************************************************/
     89 
     90 #endif
     91 
     92 /*****************************************************************************/
     93