1 | /*****************************************************************************/ |
2 | // Copyright 2006-2012 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_read_image.h#2 $ */ |
10 | /* $DateTime: 2012/06/05 11:05:39 $ */ |
11 | /* $Change: 833352 $ */ |
12 | /* $Author: tknoll $ */ |
13 | |
14 | /** \file |
15 | * Support for DNG image reading. |
16 | */ |
17 | |
18 | /*****************************************************************************/ |
19 | |
20 | #ifndef __dng_read_image__ |
21 | #define __dng_read_image__ |
22 | |
23 | /*****************************************************************************/ |
24 | |
25 | #include "dng_auto_ptr.h" |
26 | #include "dng_classes.h" |
27 | #include "dng_image.h" |
28 | #include "dng_memory.h" |
29 | #include "dng_types.h" |
30 | |
31 | /******************************************************************************/ |
32 | |
33 | bool DecodePackBits (dng_stream &stream, |
34 | uint8 *dPtr, |
35 | int32 dstCount); |
36 | |
37 | /*****************************************************************************/ |
38 | |
39 | class dng_row_interleaved_image: public dng_image |
40 | { |
41 | |
42 | private: |
43 | |
44 | dng_image &fImage; |
45 | |
46 | uint32 fFactor; |
47 | |
48 | public: |
49 | |
50 | dng_row_interleaved_image (dng_image &image, |
51 | uint32 factor); |
52 | |
53 | virtual void DoGet (dng_pixel_buffer &buffer) const; |
54 | |
55 | virtual void DoPut (const dng_pixel_buffer &buffer); |
56 | |
57 | private: |
58 | |
59 | int32 MapRow (int32 row) const; |
60 | |
61 | }; |
62 | |
63 | /*****************************************************************************/ |
64 | |
65 | /// \brief |
66 | /// |
67 | /// |
68 | |
69 | class dng_read_image |
70 | { |
71 | |
72 | friend class dng_read_tiles_task; |
73 | |
74 | protected: |
75 | |
76 | enum |
77 | { |
78 | |
79 | // Target size for buffer used to copy data to the image. |
80 | |
81 | kImageBufferSize = 128 * 1024 |
82 | |
83 | }; |
84 | |
85 | AutoPtr<dng_memory_block> fJPEGTables; |
86 | |
87 | public: |
88 | |
89 | dng_read_image (); |
90 | |
91 | virtual ~dng_read_image (); |
92 | |
93 | /// |
94 | /// \param |
95 | |
96 | virtual bool CanRead (const dng_ifd &ifd); |
97 | |
98 | /// |
99 | /// \param host Host used for memory allocation, progress updating, and abort testing. |
100 | /// \param ifd |
101 | /// \param stream Stream to read image data from. |
102 | /// \param image Result image to populate. |
103 | |
104 | virtual void Read (dng_host &host, |
105 | const dng_ifd &ifd, |
106 | dng_stream &stream, |
107 | dng_image &image, |
108 | dng_jpeg_image *jpegImage, |
109 | dng_fingerprint *jpegDigest); |
110 | |
111 | protected: |
112 | |
113 | virtual bool ReadUncompressed (dng_host &host, |
114 | const dng_ifd &ifd, |
115 | dng_stream &stream, |
116 | dng_image &image, |
117 | const dng_rect &tileArea, |
118 | uint32 plane, |
119 | uint32 planes, |
120 | AutoPtr<dng_memory_block> &uncompressedBuffer, |
121 | AutoPtr<dng_memory_block> &subTileBlockBuffer); |
122 | |
123 | virtual void DecodeLossyJPEG (dng_host &host, |
124 | dng_image &image, |
125 | const dng_rect &tileArea, |
126 | uint32 plane, |
127 | uint32 planes, |
128 | uint32 photometricInterpretation, |
129 | uint32 jpegDataSize, |
130 | uint8 *jpegDataInMemory); |
131 | |
132 | virtual bool ReadBaselineJPEG (dng_host &host, |
133 | const dng_ifd &ifd, |
134 | dng_stream &stream, |
135 | dng_image &image, |
136 | const dng_rect &tileArea, |
137 | uint32 plane, |
138 | uint32 planes, |
139 | uint32 tileByteCount, |
140 | uint8 *jpegDataInMemory); |
141 | |
142 | virtual bool ReadLosslessJPEG (dng_host &host, |
143 | const dng_ifd &ifd, |
144 | dng_stream &stream, |
145 | dng_image &image, |
146 | const dng_rect &tileArea, |
147 | uint32 plane, |
148 | uint32 planes, |
149 | uint32 tileByteCount, |
150 | AutoPtr<dng_memory_block> &uncompressedBuffer, |
151 | AutoPtr<dng_memory_block> &subTileBlockBuffer); |
152 | |
153 | virtual bool CanReadTile (const dng_ifd &ifd); |
154 | |
155 | virtual bool NeedsCompressedBuffer (const dng_ifd &ifd); |
156 | |
157 | virtual void ByteSwapBuffer (dng_host &host, |
158 | dng_pixel_buffer &buffer); |
159 | |
160 | virtual void DecodePredictor (dng_host &host, |
161 | const dng_ifd &ifd, |
162 | dng_pixel_buffer &buffer); |
163 | |
164 | virtual void ReadTile (dng_host &host, |
165 | const dng_ifd &ifd, |
166 | dng_stream &stream, |
167 | dng_image &image, |
168 | const dng_rect &tileArea, |
169 | uint32 plane, |
170 | uint32 planes, |
171 | uint32 tileByteCount, |
172 | AutoPtr<dng_memory_block> &compressedBuffer, |
173 | AutoPtr<dng_memory_block> &uncompressedBuffer, |
174 | AutoPtr<dng_memory_block> &subTileBlockBuffer); |
175 | |
176 | }; |
177 | |
178 | /*****************************************************************************/ |
179 | |
180 | #endif |
181 | |
182 | /*****************************************************************************/ |
183 | |