1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
|
/* -*- C++ -*-
* File: 4channels.cpp
* Copyright 2008-2015 LibRaw LLC (info@libraw.org)
* Created: Mon Feb 09, 2009
*
* LibRaw sample
* Generates 4 TIFF file from RAW data, one file per channel
*
LibRaw is free software; you can redistribute it and/or modify
it under the terms of the one of three licenses as you choose:
1. GNU LESSER GENERAL PUBLIC LICENSE version 2.1
(See file LICENSE.LGPL provided in LibRaw distribution archive for details).
2. COMMON DEVELOPMENT AND DISTRIBUTION LICENSE (CDDL) Version 1.0
(See file LICENSE.CDDL provided in LibRaw distribution archive for details).
3. LibRaw Software License 27032010
(See file LICENSE.LibRaw.pdf provided in LibRaw distribution archive for details).
*/
#include <stdio.h>
#include <string.h>
#include <math.h>
#ifndef WIN32
#include <netinet/in.h>
#else
#include <winsock2.h>
#endif
#include "libraw/libraw.h"
#ifdef WIN32
#define snprintf _snprintf
#endif
int main(int ac, char *av[])
{
int i, ret;
int autoscale=0,black_subtraction=1, use_gamma=0;
char outfn[1024];
LibRaw RawProcessor;
if(ac<2)
{
usage:
printf(
"4channels - LibRaw %s sample. %d cameras supported\n"
"Usage: %s [-s N] [-g] [-A] [-B] [-N] raw-files....\n"
"\t-s N - select Nth image in file (default=0)\n"
"\t-g - use gamma correction with gamma 2.2 (not precise,use for visual inspection only)\n"
"\t-A - autoscaling (by integer factor)\n"
"\t-B - no black subtraction\n"
,LibRaw::version(),
LibRaw::cameraCount(),
av[0]);
return 0;
}
#define P1 RawProcessor.imgdata.idata
#define S RawProcessor.imgdata.sizes
#define C RawProcessor.imgdata.color
#define T RawProcessor.imgdata.thumbnail
#define P2 RawProcessor.imgdata.other
#define OUT RawProcessor.imgdata.params
OUT.output_bps=16;
OUT.output_tiff=1;
OUT.user_flip=0;
OUT.no_auto_bright = 1;
OUT.half_size=1;
for (i=1;i<ac;i++)
{
if(av[i][0]=='-')
{
if(av[i][1]=='s' && av[i][2]==0)
{
i++;
OUT.shot_select=av[i]?atoi(av[i]):0;
}
else if(av[i][1]=='g' && av[i][2]==0)
use_gamma = 1;
else if(av[i][1]=='A' && av[i][2]==0)
autoscale=1;
else if(av[i][1]=='B' && av[i][2]==0)
{
black_subtraction=0;
}
else
goto usage;
continue;
}
if(!use_gamma)
OUT.gamm[0] = OUT.gamm[1] = 1;
int c;
printf("Processing file %s\n",av[i]);
if( (ret = RawProcessor.open_file(av[i])) != LIBRAW_SUCCESS)
{
fprintf(stderr,"Cannot open %s: %s\n",av[i],libraw_strerror(ret));
continue; // no recycle b/c open file will recycle itself
}
if(P1.is_foveon)
{
printf("Cannot process Foveon image %s\n",av[i]);
continue ;
}
if( (ret = RawProcessor.unpack() ) != LIBRAW_SUCCESS)
{
fprintf(stderr,"Cannot unpack %s: %s\n",av[i],libraw_strerror(ret));
continue;
}
RawProcessor.raw2image();
if(black_subtraction)
{
RawProcessor.subtract_black();
}
if(autoscale)
{
unsigned max=0,scale=1;
for(int j=0; j<S.iheight*S.iwidth; j++)
for(int c = 0; c< 4; c++)
if(max < RawProcessor.imgdata.image[j][c])
max = RawProcessor.imgdata.image[j][c];
if (max >0 && max< 1<<15)
{
scale = (1<<16)/max;
printf("Scaling with multiplier=%d (max=%d)\n",scale,max);
for(int j=0; j<S.iheight*S.iwidth; j++)
for(c=0;c<4;c++)
RawProcessor.imgdata.image[j][c] *= scale;
}
printf("Black level (scaled)=%d\n",C.black*scale);
}
else
printf("Black level (unscaled)=%d\n",C.black);
// hack to make dcraw tiff writer happy
int isrgb=(P1.colors==4?0:1);
P1.colors = 1;
S.width = S.iwidth;
S.height = S.iheight;
for (int layer=0;layer<4;layer++)
{
if(layer>0)
{
for (int rc = 0; rc < S.iheight*S.iwidth; rc++)
RawProcessor.imgdata.image[rc][0] = RawProcessor.imgdata.image[rc][layer];
}
char lname[8];
if(isrgb)
{
snprintf(lname,7,"%c",((char*)("RGBG"))[layer]);
if(layer==3)
strcat(lname,"2");
}
else
snprintf(lname,7,"%c",((char*)("GCMY"))[layer]);
if(OUT.shot_select)
snprintf(outfn,sizeof(outfn),"%s-%d.%s.tiff",av[i],OUT.shot_select,lname);
else
snprintf(outfn,sizeof(outfn),"%s.%s.tiff",av[i],lname);
printf("Writing file %s\n",outfn);
if( LIBRAW_SUCCESS != (ret = RawProcessor.dcraw_ppm_tiff_writer(outfn)))
fprintf(stderr,"Cannot write %s: %s\n",outfn,libraw_strerror(ret));
}
}
return 0;
}
|
