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eBookReaderSwitch/mupdf/thirdparty/lcms2/utils/jpgicc/jpgicc.c

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//---------------------------------------------------------------------------------
//
// Little Color Management System
// Copyright (c) 1998-2017 Marti Maria Saguer
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the Software
// is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO
// THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
// This program does apply profiles to (some) JPEG files
#include "utils.h"
#include "jpeglib.h"
#include "iccjpeg.h"
// Flags
static cmsBool BlackPointCompensation = FALSE;
static cmsBool IgnoreEmbedded = FALSE;
static cmsBool GamutCheck = FALSE;
static cmsBool lIsITUFax = FALSE;
static cmsBool lIsPhotoshopApp13 = FALSE;
static cmsBool lIsEXIF;
static cmsBool lIsDeviceLink = FALSE;
static cmsBool EmbedProfile = FALSE;
static const char* SaveEmbedded = NULL;
static int Intent = INTENT_PERCEPTUAL;
static int ProofingIntent = INTENT_PERCEPTUAL;
static int PrecalcMode = 1;
static int jpegQuality = 75;
static cmsFloat64Number ObserverAdaptationState = 0;
static char *cInpProf = NULL;
static char *cOutProf = NULL;
static char *cProofing = NULL;
static FILE * InFile;
static FILE * OutFile;
static struct jpeg_decompress_struct Decompressor;
static struct jpeg_compress_struct Compressor;
static struct my_error_mgr {
struct jpeg_error_mgr pub; // "public" fields
void* Cargo; // "private" fields
} ErrorHandler;
cmsUInt16Number Alarm[4] = {128,128,128,0};
static
void my_error_exit (j_common_ptr cinfo)
{
char buffer[JMSG_LENGTH_MAX];
(*cinfo->err->format_message) (cinfo, buffer);
FatalError(buffer);
}
/*
Definition of the APPn Markers Defined for continuous-tone G3FAX
The application code APP1 initiates identification of the image as
a G3FAX application and defines the spatial resolution and subsampling.
This marker directly follows the SOI marker. The data format will be as follows:
X'FFE1' (APP1), length, FAX identifier, version, spatial resolution.
The above terms are defined as follows:
Length: (Two octets) Total APP1 field octet count including the octet count itself, but excluding the APP1
marker.
FAX identifier: (Six octets) X'47', X'33', X'46', X'41', X'58', X'00'. This X'00'-terminated string "G3FAX"
uniquely identifies this APP1 marker.
Version: (Two octets) X'07CA'. This string specifies the year of approval of the standard, for identification
in the case of future revision (for example, 1994).
Spatial Resolution: (Two octets) Lightness pixel density in pels/25.4 mm. The basic value is 200. Allowed values are
100, 200, 300, 400, 600 and 1200 pels/25.4 mm, with square (or equivalent) pels.
NOTE - The functional equivalence of inch-based and mm-based resolutions is maintained. For example, the 200 x 200
*/
static
cmsBool IsITUFax(jpeg_saved_marker_ptr ptr)
{
while (ptr)
{
if (ptr -> marker == (JPEG_APP0 + 1) && ptr -> data_length > 5) {
const char* data = (const char*) ptr -> data;
if (strcmp(data, "G3FAX") == 0) return TRUE;
}
ptr = ptr -> next;
}
return FALSE;
}
// Save a ITU T.42/Fax marker with defaults on boundaries. This is the only mode we support right now.
static
void SetITUFax(j_compress_ptr cinfo)
{
unsigned char Marker[] = "G3FAX\x00\0x07\xCA\x00\xC8";
jpeg_write_marker(cinfo, (JPEG_APP0 + 1), Marker, 10);
}
// Build a profile for decoding ITU T.42/Fax JPEG streams.
// The profile has an additional ability in the input direction of
// gamut compress values between 85 < a < -85 and -75 < b < 125. This conforms
// the default range for ITU/T.42 -- See RFC 2301, section 6.2.3 for details
// L* = [0, 100]
// a* = [-85, 85]
// b* = [-75, 125]
// These functions does convert the encoding of ITUFAX to floating point
// and vice-versa. No gamut mapping is performed yet.
static
void ITU2Lab(const cmsUInt16Number In[3], cmsCIELab* Lab)
{
Lab -> L = (double) In[0] / 655.35;
Lab -> a = (double) 170.* (In[1] - 32768.) / 65535.;
Lab -> b = (double) 200.* (In[2] - 24576.) / 65535.;
}
static
void Lab2ITU(const cmsCIELab* Lab, cmsUInt16Number Out[3])
{
Out[0] = (cmsUInt16Number) floor((double) (Lab -> L / 100.)* 65535. );
Out[1] = (cmsUInt16Number) floor((double) (Lab -> a / 170.)* 65535. + 32768. );
Out[2] = (cmsUInt16Number) floor((double) (Lab -> b / 200.)* 65535. + 24576. );
}
// These are the samplers-- They are passed as callbacks to cmsStageSampleCLut16bit()
// then, cmsSample3DGrid() will sweel whole Lab gamut calling these functions
// once for each node. In[] will contain the Lab PCS value to convert to ITUFAX
// on PCS2ITU, or the ITUFAX value to convert to Lab in ITU2PCS
// You can change the number of sample points if desired, the algorithm will
// remain same. 33 points gives good accuracy, but you can reduce to 22 or less
// is space is critical
#define GRID_POINTS 33
static
int PCS2ITU(cmsContext ContextID, register const cmsUInt16Number In[], register cmsUInt16Number Out[], register void* Cargo)
{
cmsCIELab Lab;
cmsLabEncoded2Float(NULL, &Lab, In);
cmsDesaturateLab(NULL, &Lab, 85, -85, 125, -75); // This function does the necessary gamut remapping
Lab2ITU(&Lab, Out);
return TRUE;
UTILS_UNUSED_PARAMETER(Cargo);
UTILS_UNUSED_PARAMETER(ContextID);
}
static
int ITU2PCS(cmsContext ContextID, register const cmsUInt16Number In[], register cmsUInt16Number Out[], register void* Cargo)
{
cmsCIELab Lab;
ITU2Lab(In, &Lab);
cmsFloat2LabEncoded(NULL, Out, &Lab);
return TRUE;
UTILS_UNUSED_PARAMETER(Cargo);
UTILS_UNUSED_PARAMETER(ContextID);
}
// This function does create the virtual input profile, which decodes ITU to the profile connection space
static
cmsHPROFILE CreateITU2PCS_ICC(void)
{
cmsHPROFILE hProfile;
cmsPipeline* AToB0;
cmsStage* ColorMap;
AToB0 = cmsPipelineAlloc(0, 3, 3);
if (AToB0 == NULL) return NULL;
ColorMap = cmsStageAllocCLut16bit(0, GRID_POINTS, 3, 3, NULL);
if (ColorMap == NULL) return NULL;
cmsPipelineInsertStage(NULL, AToB0, cmsAT_BEGIN, ColorMap);
cmsStageSampleCLut16bit(NULL, ColorMap, ITU2PCS, NULL, 0);
hProfile = cmsCreateProfilePlaceholder(0);
if (hProfile == NULL) {
cmsPipelineFree(NULL, AToB0);
return NULL;
}
cmsWriteTag(NULL, hProfile, cmsSigAToB0Tag, AToB0);
cmsSetColorSpace(NULL, hProfile, cmsSigLabData);
cmsSetPCS(NULL, hProfile, cmsSigLabData);
cmsSetDeviceClass(NULL, hProfile, cmsSigColorSpaceClass);
cmsPipelineFree(NULL, AToB0);
return hProfile;
}
// This function does create the virtual output profile, with the necessary gamut mapping
static
cmsHPROFILE CreatePCS2ITU_ICC(void)
{
cmsHPROFILE hProfile;
cmsPipeline* BToA0;
cmsStage* ColorMap;
BToA0 = cmsPipelineAlloc(0, 3, 3);
if (BToA0 == NULL) return NULL;
ColorMap = cmsStageAllocCLut16bit(0, GRID_POINTS, 3, 3, NULL);
if (ColorMap == NULL) return NULL;
cmsPipelineInsertStage(NULL, BToA0, cmsAT_BEGIN, ColorMap);
cmsStageSampleCLut16bit(NULL, ColorMap, PCS2ITU, NULL, 0);
hProfile = cmsCreateProfilePlaceholder(0);
if (hProfile == NULL) {
cmsPipelineFree(NULL, BToA0);
return NULL;
}
cmsWriteTag(NULL, hProfile, cmsSigBToA0Tag, BToA0);
cmsSetColorSpace(NULL, hProfile, cmsSigLabData);
cmsSetPCS(NULL, hProfile, cmsSigLabData);
cmsSetDeviceClass(NULL, hProfile, cmsSigColorSpaceClass);
cmsPipelineFree(NULL, BToA0);
return hProfile;
}
#define PS_FIXED_TO_FLOAT(h, l) ((float) (h) + ((float) (l)/(1<<16)))
static
cmsBool ProcessPhotoshopAPP13(JOCTET FAR *data, int datalen)
{
int i;
for (i = 14; i < datalen; )
{
long len;
unsigned int type;
if (!(GETJOCTET(data[i] ) == 0x38 &&
GETJOCTET(data[i+1]) == 0x42 &&
GETJOCTET(data[i+2]) == 0x49 &&
GETJOCTET(data[i+3]) == 0x4D)) break; // Not recognized
i += 4; // identifying string
type = (unsigned int) (GETJOCTET(data[i]<<8) + GETJOCTET(data[i+1]));
i += 2; // resource type
i += GETJOCTET(data[i]) + ((GETJOCTET(data[i]) & 1) ? 1 : 2); // resource name
len = ((((GETJOCTET(data[i]<<8) + GETJOCTET(data[i+1]))<<8) +
GETJOCTET(data[i+2]))<<8) + GETJOCTET(data[i+3]);
i += 4; // Size
if (type == 0x03ED && len >= 16) {
Decompressor.X_density = (UINT16) PS_FIXED_TO_FLOAT(GETJOCTET(data[i]<<8) + GETJOCTET(data[i+1]),
GETJOCTET(data[i+2]<<8) + GETJOCTET(data[i+3]));
Decompressor.Y_density = (UINT16) PS_FIXED_TO_FLOAT(GETJOCTET(data[i+8]<<8) + GETJOCTET(data[i+9]),
GETJOCTET(data[i+10]<<8) + GETJOCTET(data[i+11]));
// Set the density unit to 1 since the
// Vertical and Horizontal resolutions
// are specified in Pixels per inch
Decompressor.density_unit = 0x01;
return TRUE;
}
i += len + ((len & 1) ? 1 : 0); // Alignment
}
return FALSE;
}
static
cmsBool HandlePhotoshopAPP13(jpeg_saved_marker_ptr ptr)
{
while (ptr) {
if (ptr -> marker == (JPEG_APP0 + 13) && ptr -> data_length > 9)
{
JOCTET FAR* data = ptr -> data;
if(GETJOCTET(data[0]) == 0x50 &&
GETJOCTET(data[1]) == 0x68 &&
GETJOCTET(data[2]) == 0x6F &&
GETJOCTET(data[3]) == 0x74 &&
GETJOCTET(data[4]) == 0x6F &&
GETJOCTET(data[5]) == 0x73 &&
GETJOCTET(data[6]) == 0x68 &&
GETJOCTET(data[7]) == 0x6F &&
GETJOCTET(data[8]) == 0x70) {
ProcessPhotoshopAPP13(data, ptr -> data_length);
return TRUE;
}
}
ptr = ptr -> next;
}
return FALSE;
}
typedef unsigned short uint16_t;
typedef unsigned char uint8_t;
typedef unsigned int uint32_t;
#define INTEL_BYTE_ORDER 0x4949
#define XRESOLUTION 0x011a
#define YRESOLUTION 0x011b
#define RESOLUTION_UNIT 0x128
// Read a 16-bit word
static
uint16_t read16(uint8_t* arr, int pos, int swapBytes)
{
uint8_t b1 = arr[pos];
uint8_t b2 = arr[pos+1];
return (swapBytes) ? ((b2 << 8) | b1) : ((b1 << 8) | b2);
}
// Read a 32-bit word
static
uint32_t read32(uint8_t* arr, int pos, int swapBytes)
{
if(!swapBytes) {
return (arr[pos] << 24) |
(arr[pos+1] << 16) |
(arr[pos+2] << 8) |
arr[pos+3];
}
return arr[pos] |
(arr[pos+1] << 8) |
(arr[pos+2] << 16) |
(arr[pos+3] << 24);
}
static
int read_tag(uint8_t* arr, int pos, int swapBytes, void* dest)
{
// Format should be 5 over here (rational)
uint32_t format = read16(arr, pos + 2, swapBytes);
// Components should be 1
uint32_t components = read32(arr, pos + 4, swapBytes);
// Points to the value
uint32_t offset;
// sanity
if (components != 1) return 0;
if (format == 3)
offset = pos + 8;
else
offset = read32(arr, pos + 8, swapBytes);
switch (format) {
case 5: // Rational
{
double num = read32(arr, offset, swapBytes);
double den = read32(arr, offset + 4, swapBytes);
*(double *) dest = num / den;
}
break;
case 3: // uint 16
*(int*) dest = read16(arr, offset, swapBytes);
break;
default: return 0;
}
return 1;
}
// Handler for EXIF data
static
cmsBool HandleEXIF(struct jpeg_decompress_struct* cinfo)
{
jpeg_saved_marker_ptr ptr;
uint32_t ifd_ofs;
int pos = 0, swapBytes = 0;
uint32_t i, numEntries;
double XRes = -1, YRes = -1;
int Unit = 2; // Inches
for (ptr = cinfo ->marker_list; ptr; ptr = ptr ->next) {
if ((ptr ->marker == JPEG_APP0+1) && ptr ->data_length > 6) {
JOCTET FAR* data = ptr -> data;
if (memcmp(data, "Exif\0\0", 6) == 0) {
data += 6; // Skip EXIF marker
// 8 byte TIFF header
// first two determine byte order
pos = 0;
if (read16(data, pos, 0) == INTEL_BYTE_ORDER) {
swapBytes = 1;
}
pos += 2;
// next two bytes are always 0x002A (TIFF version)
pos += 2;
// offset to Image File Directory (includes the previous 8 bytes)
ifd_ofs = read32(data, pos, swapBytes);
// Search the directory for resolution tags
numEntries = read16(data, ifd_ofs, swapBytes);
for (i=0; i < numEntries; i++) {
uint32_t entryOffset = ifd_ofs + 2 + (12 * i);
uint32_t tag = read16(data, entryOffset, swapBytes);
switch (tag) {
case RESOLUTION_UNIT:
if (!read_tag(data, entryOffset, swapBytes, &Unit)) return FALSE;
break;
case XRESOLUTION:
if (!read_tag(data, entryOffset, swapBytes, &XRes)) return FALSE;
break;
case YRESOLUTION:
if (!read_tag(data, entryOffset, swapBytes, &YRes)) return FALSE;
break;
default:;
}
}
// Proceed if all found
if (XRes != -1 && YRes != -1)
{
// 1 = None
// 2 = inches
// 3 = cm
switch (Unit) {
case 2:
cinfo ->X_density = (UINT16) floor(XRes + 0.5);
cinfo ->Y_density = (UINT16) floor(YRes + 0.5);
break;
case 1:
cinfo ->X_density = (UINT16) floor(XRes * 2.54 + 0.5);
cinfo ->Y_density = (UINT16) floor(YRes * 2.54 + 0.5);
break;
default: return FALSE;
}
cinfo ->density_unit = 1; /* 1 for dots/inch, or 2 for dots/cm.*/
}
}
}
}
return FALSE;
}
static
cmsBool OpenInput(const char* FileName)
{
int m;
lIsITUFax = FALSE;
InFile = fopen(FileName, "rb");
if (InFile == NULL) {
FatalError("Cannot open '%s'", FileName);
}
// Now we can initialize the JPEG decompression object.
Decompressor.err = jpeg_std_error(&ErrorHandler.pub);
ErrorHandler.pub.error_exit = my_error_exit;
ErrorHandler.pub.output_message = my_error_exit;
jpeg_create_decompress(&Decompressor);
jpeg_stdio_src(&Decompressor, InFile);
for (m = 0; m < 16; m++)
jpeg_save_markers(&Decompressor, JPEG_APP0 + m, 0xFFFF);
// setup_read_icc_profile(&Decompressor);
fseek(InFile, 0, SEEK_SET);
jpeg_read_header(&Decompressor, TRUE);
return TRUE;
}
static
cmsBool OpenOutput(const char* FileName)
{
OutFile = fopen(FileName, "wb");
if (OutFile == NULL) {
FatalError("Cannot create '%s'", FileName);
}
Compressor.err = jpeg_std_error(&ErrorHandler.pub);
ErrorHandler.pub.error_exit = my_error_exit;
ErrorHandler.pub.output_message = my_error_exit;
Compressor.input_components = Compressor.num_components = 4;
jpeg_create_compress(&Compressor);
jpeg_stdio_dest(&Compressor, OutFile);
return TRUE;
}
static
cmsBool Done(void)
{
jpeg_destroy_decompress(&Decompressor);
jpeg_destroy_compress(&Compressor);
return fclose(InFile) + fclose(OutFile);
}
// Build up the pixeltype descriptor
static
cmsUInt32Number GetInputPixelType(void)
{
int space, bps, extra, ColorChannels, Flavor;
lIsITUFax = IsITUFax(Decompressor.marker_list);
lIsPhotoshopApp13 = HandlePhotoshopAPP13(Decompressor.marker_list);
lIsEXIF = HandleEXIF(&Decompressor);
ColorChannels = Decompressor.num_components;
extra = 0; // Alpha = None
bps = 1; // 8 bits
Flavor = 0; // Vanilla
if (lIsITUFax) {
space = PT_Lab;
Decompressor.out_color_space = JCS_YCbCr; // Fake to don't touch
}
else
switch (Decompressor.jpeg_color_space) {
case JCS_GRAYSCALE: // monochrome
space = PT_GRAY;
Decompressor.out_color_space = JCS_GRAYSCALE;
break;
case JCS_RGB: // red/green/blue
space = PT_RGB;
Decompressor.out_color_space = JCS_RGB;
break;
case JCS_YCbCr: // Y/Cb/Cr (also known as YUV)
space = PT_RGB; // Let IJG code to do the conversion
Decompressor.out_color_space = JCS_RGB;
break;
case JCS_CMYK: // C/M/Y/K
space = PT_CMYK;
Decompressor.out_color_space = JCS_CMYK;
if (Decompressor.saw_Adobe_marker) // Adobe keeps CMYK inverted, so change flavor
Flavor = 1; // from vanilla to chocolate
break;
case JCS_YCCK: // Y/Cb/Cr/K
space = PT_CMYK;
Decompressor.out_color_space = JCS_CMYK;
if (Decompressor.saw_Adobe_marker) // ditto
Flavor = 1;
break;
default:
FatalError("Unsupported color space (0x%x)", Decompressor.jpeg_color_space);
return 0;
}
return (EXTRA_SH(extra)|CHANNELS_SH(ColorChannels)|BYTES_SH(bps)|COLORSPACE_SH(space)|FLAVOR_SH(Flavor));
}
// Rearrange pixel type to build output descriptor
static
cmsUInt32Number ComputeOutputFormatDescriptor(cmsUInt32Number dwInput, int OutColorSpace)
{
int IsPlanar = T_PLANAR(dwInput);
int Channels = 0;
int Flavor = 0;
switch (OutColorSpace) {
case PT_GRAY:
Channels = 1;
break;
case PT_RGB:
case PT_CMY:
case PT_Lab:
case PT_YUV:
case PT_YCbCr:
Channels = 3;
break;
case PT_CMYK:
if (Compressor.write_Adobe_marker) // Adobe keeps CMYK inverted, so change flavor to chocolate
Flavor = 1;
Channels = 4;
break;
default:
FatalError("Unsupported output color space");
}
return (COLORSPACE_SH(OutColorSpace)|PLANAR_SH(IsPlanar)|CHANNELS_SH(Channels)|BYTES_SH(1)|FLAVOR_SH(Flavor));
}
// Equivalence between ICC color spaces and lcms color spaces
static
int GetProfileColorSpace(cmsHPROFILE hProfile)
{
cmsColorSpaceSignature ProfileSpace = cmsGetColorSpace(NULL, hProfile);
return _cmsLCMScolorSpace(NULL, ProfileSpace);
}
static
int GetDevicelinkColorSpace(cmsHPROFILE hProfile)
{
cmsColorSpaceSignature ProfileSpace = cmsGetPCS(NULL, hProfile);
return _cmsLCMScolorSpace(NULL, ProfileSpace);
}
// From TRANSUPP
static
void jcopy_markers_execute(j_decompress_ptr srcinfo, j_compress_ptr dstinfo)
{
jpeg_saved_marker_ptr marker;
/* In the current implementation, we don't actually need to examine the
* option flag here; we just copy everything that got saved.
* But to avoid confusion, we do not output JFIF and Adobe APP14 markers
* if the encoder library already wrote one.
*/
for (marker = srcinfo->marker_list; marker != NULL; marker = marker->next) {
if (dstinfo->write_JFIF_header &&
marker->marker == JPEG_APP0 &&
marker->data_length >= 5 &&
GETJOCTET(marker->data[0]) == 0x4A &&
GETJOCTET(marker->data[1]) == 0x46 &&
GETJOCTET(marker->data[2]) == 0x49 &&
GETJOCTET(marker->data[3]) == 0x46 &&
GETJOCTET(marker->data[4]) == 0)
continue; /* reject duplicate JFIF */
if (dstinfo->write_Adobe_marker &&
marker->marker == JPEG_APP0+14 &&
marker->data_length >= 5 &&
GETJOCTET(marker->data[0]) == 0x41 &&
GETJOCTET(marker->data[1]) == 0x64 &&
GETJOCTET(marker->data[2]) == 0x6F &&
GETJOCTET(marker->data[3]) == 0x62 &&
GETJOCTET(marker->data[4]) == 0x65)
continue; /* reject duplicate Adobe */
jpeg_write_marker(dstinfo, marker->marker,
marker->data, marker->data_length);
}
}
static
void WriteOutputFields(int OutputColorSpace)
{
J_COLOR_SPACE in_space, jpeg_space;
int components;
switch (OutputColorSpace) {
case PT_GRAY: in_space = jpeg_space = JCS_GRAYSCALE;
components = 1;
break;
case PT_RGB: in_space = JCS_RGB;
jpeg_space = JCS_YCbCr;
components = 3;
break; // red/green/blue
case PT_YCbCr: in_space = jpeg_space = JCS_YCbCr;
components = 3;
break; // Y/Cb/Cr (also known as YUV)
case PT_CMYK: in_space = JCS_CMYK;
jpeg_space = JCS_YCCK;
components = 4;
break; // C/M/Y/components
case PT_Lab: in_space = jpeg_space = JCS_YCbCr;
components = 3;
break; // Fake to don't touch
default:
FatalError("Unsupported output color space");
return;
}
if (jpegQuality >= 100) {
// avoid destructive conversion when asking for lossless compression
jpeg_space = in_space;
}
Compressor.in_color_space = in_space;
Compressor.jpeg_color_space = jpeg_space;
Compressor.input_components = Compressor.num_components = components;
jpeg_set_defaults(&Compressor);
jpeg_set_colorspace(&Compressor, jpeg_space);
// Make sure to pass resolution through
if (OutputColorSpace == PT_CMYK)
Compressor.write_JFIF_header = 1;
// Avoid subsampling on high quality factor
jpeg_set_quality(&Compressor, jpegQuality, 1);
if (jpegQuality >= 70) {
int i;
for(i=0; i < Compressor.num_components; i++) {
Compressor.comp_info[i].h_samp_factor = 1;
Compressor.comp_info[i].v_samp_factor = 1;
}
}
}
static
void DoEmbedProfile(const char* ProfileFile)
{
FILE* f;
size_t size, EmbedLen;
cmsUInt8Number* EmbedBuffer;
f = fopen(ProfileFile, "rb");
if (f == NULL) return;
size = cmsfilelength(f);
EmbedBuffer = (cmsUInt8Number*) malloc(size + 1);
EmbedLen = fread(EmbedBuffer, 1, size, f);
fclose(f);
EmbedBuffer[EmbedLen] = 0;
write_icc_profile (&Compressor, EmbedBuffer, (unsigned int) EmbedLen);
free(EmbedBuffer);
}
static
int DoTransform(cmsHTRANSFORM hXForm, int OutputColorSpace)
{
JSAMPROW ScanLineIn;
JSAMPROW ScanLineOut;
//Preserve resolution values from the original
// (Thanks to Robert Bergs for finding out this bug)
Compressor.density_unit = Decompressor.density_unit;
Compressor.X_density = Decompressor.X_density;
Compressor.Y_density = Decompressor.Y_density;
// Compressor.write_JFIF_header = 1;
jpeg_start_decompress(&Decompressor);
jpeg_start_compress(&Compressor, TRUE);
if (OutputColorSpace == PT_Lab)
SetITUFax(&Compressor);
// Embed the profile if needed
if (EmbedProfile && cOutProf)
DoEmbedProfile(cOutProf);
ScanLineIn = (JSAMPROW) malloc(Decompressor.output_width * Decompressor.num_components);
ScanLineOut = (JSAMPROW) malloc(Compressor.image_width * Compressor.num_components);
while (Decompressor.output_scanline <
Decompressor.output_height) {
jpeg_read_scanlines(&Decompressor, &ScanLineIn, 1);
cmsDoTransform(NULL, hXForm, ScanLineIn, ScanLineOut, Decompressor.output_width);
jpeg_write_scanlines(&Compressor, &ScanLineOut, 1);
}
free(ScanLineIn);
free(ScanLineOut);
jpeg_finish_decompress(&Decompressor);
jpeg_finish_compress(&Compressor);
return TRUE;
}
// Transform one image
static
int TransformImage(char *cDefInpProf, char *cOutputProf)
{
cmsHPROFILE hIn, hOut, hProof;
cmsHTRANSFORM xform;
cmsUInt32Number wInput, wOutput;
int OutputColorSpace;
cmsUInt32Number dwFlags = 0;
cmsUInt32Number EmbedLen;
cmsUInt8Number* EmbedBuffer;
cmsSetAdaptationState(ObserverAdaptationState);
if (BlackPointCompensation) {
dwFlags |= cmsFLAGS_BLACKPOINTCOMPENSATION;
}
switch (PrecalcMode) {
case 0: dwFlags |= cmsFLAGS_NOOPTIMIZE; break;
case 2: dwFlags |= cmsFLAGS_HIGHRESPRECALC; break;
case 3: dwFlags |= cmsFLAGS_LOWRESPRECALC; break;
default:;
}
if (GamutCheck) {
dwFlags |= cmsFLAGS_GAMUTCHECK;
cmsSetAlarmCodes(Alarm);
}
// Take input color space
wInput = GetInputPixelType();
if (lIsDeviceLink) {
hIn = cmsOpenProfileFromFile(cDefInpProf, "r");
hOut = NULL;
hProof = NULL;
}
else {
if (!IgnoreEmbedded && read_icc_profile(&Decompressor, &EmbedBuffer, &EmbedLen))
{
hIn = cmsOpenProfileFromMem(EmbedBuffer, EmbedLen);
if (Verbose) {
fprintf(stdout, " (Embedded profile found)\n");
PrintProfileInformation(NULL, hIn);
fflush(stdout);
}
if (hIn != NULL && SaveEmbedded != NULL)
SaveMemoryBlock(EmbedBuffer, EmbedLen, SaveEmbedded);
free(EmbedBuffer);
}
else
{
// Default for ITU/Fax
if (cDefInpProf == NULL && T_COLORSPACE(wInput) == PT_Lab)
cDefInpProf = "*Lab";
if (cDefInpProf != NULL && cmsstrcasecmp(cDefInpProf, "*lab") == 0)
hIn = CreateITU2PCS_ICC();
else
hIn = OpenStockProfile(0, cDefInpProf);
}
if (cOutputProf != NULL && cmsstrcasecmp(cOutputProf, "*lab") == 0)
hOut = CreatePCS2ITU_ICC();
else
hOut = OpenStockProfile(0, cOutputProf);
hProof = NULL;
if (cProofing != NULL) {
hProof = OpenStockProfile(0, cProofing);
if (hProof == NULL) {
FatalError("Proofing profile couldn't be read.");
}
dwFlags |= cmsFLAGS_SOFTPROOFING;
}
}
if (!hIn)
FatalError("Input profile couldn't be read.");
if (!lIsDeviceLink && !hOut)
FatalError("Output profile couldn't be read.");
// Assure both, input profile and input JPEG are on same colorspace
if (cmsGetColorSpace(NULL, hIn) != _cmsICCcolorSpace(NULL, T_COLORSPACE(wInput)))
FatalError("Input profile is not operating in proper color space");
// Output colorspace is given by output profile
if (lIsDeviceLink) {
OutputColorSpace = GetDevicelinkColorSpace(hIn);
}
else {
OutputColorSpace = GetProfileColorSpace(hOut);
}
jpeg_copy_critical_parameters(&Decompressor, &Compressor);
WriteOutputFields(OutputColorSpace);
wOutput = ComputeOutputFormatDescriptor(wInput, OutputColorSpace);
xform = cmsCreateProofingTransform(hIn, wInput,
hOut, wOutput,
hProof, Intent,
ProofingIntent, dwFlags);
if (xform == NULL)
FatalError("Cannot transform by using the profiles");
DoTransform(xform, OutputColorSpace);
jcopy_markers_execute(&Decompressor, &Compressor);
cmsDeleteTransform(NULL, xform);
cmsCloseProfile(NULL, hIn);
cmsCloseProfile(NULL, hOut);
if (hProof) cmsCloseProfile(NULL, hProof);
return 1;
}
// Simply print help
static
void Help(int level)
{
fprintf(stderr, "little cms ICC profile applier for JPEG - v3.2 [LittleCMS %2.2f]\n\n", LCMS_VERSION / 1000.0);
switch(level) {
default:
case 0:
fprintf(stderr, "usage: jpgicc [flags] input.jpg output.jpg\n");
fprintf(stderr, "\nflags:\n\n");
fprintf(stderr, "%cv - Verbose\n", SW);
fprintf(stderr, "%ci<profile> - Input profile (defaults to sRGB)\n", SW);
fprintf(stderr, "%co<profile> - Output profile (defaults to sRGB)\n", SW);
PrintRenderingIntents(NULL);
fprintf(stderr, "%cb - Black point compensation\n", SW);
fprintf(stderr, "%cd<0..1> - Observer adaptation state (abs.col. only)\n", SW);
fprintf(stderr, "%cn - Ignore embedded profile\n", SW);
fprintf(stderr, "%ce - Embed destination profile\n", SW);
fprintf(stderr, "%cs<new profile> - Save embedded profile as <new profile>\n", SW);
fprintf(stderr, "\n");
fprintf(stderr, "%cc<0,1,2,3> - Precalculates transform (0=Off, 1=Normal, 2=Hi-res, 3=LoRes) [defaults to 1]\n", SW);
fprintf(stderr, "\n");
fprintf(stderr, "%cp<profile> - Soft proof profile\n", SW);
fprintf(stderr, "%cm<0,1,2,3> - SoftProof intent\n", SW);
fprintf(stderr, "%cg - Marks out-of-gamut colors on softproof\n", SW);
fprintf(stderr, "%c!<r>,<g>,<b> - Out-of-gamut marker channel values\n", SW);
fprintf(stderr, "\n");
fprintf(stderr, "%cq<0..100> - Output JPEG quality\n", SW);
fprintf(stderr, "\n");
fprintf(stderr, "%ch<0,1,2,3> - More help\n", SW);
break;
case 1:
fprintf(stderr, "Examples:\n\n"
"To color correct from scanner to sRGB:\n"
"\tjpgicc %ciscanner.icm in.jpg out.jpg\n"
"To convert from monitor1 to monitor2:\n"
"\tjpgicc %cimon1.icm %comon2.icm in.jpg out.jpg\n"
"To make a CMYK separation:\n"
"\tjpgicc %coprinter.icm inrgb.jpg outcmyk.jpg\n"
"To recover sRGB from a CMYK separation:\n"
"\tjpgicc %ciprinter.icm incmyk.jpg outrgb.jpg\n"
"To convert from CIELab ITU/Fax JPEG to sRGB\n"
"\tjpgicc in.jpg out.jpg\n\n",
SW, SW, SW, SW, SW);
break;
case 2:
PrintBuiltins();
break;
case 3:
fprintf(stderr, "This program is intended to be a demo of the little cms\n"
"engine. Both lcms and this program are freeware. You can\n"
"obtain both in source code at http://www.littlecms.com\n"
"For suggestions, comments, bug reports etc. send mail to\n"
"marti@littlecms.com\n\n");
break;
}
exit(0);
}
// The toggles stuff
static
void HandleSwitches(int argc, char *argv[])
{
int s;
while ((s=xgetopt(argc,argv,"bBnNvVGgh:H:i:I:o:O:P:p:t:T:c:C:Q:q:M:m:L:l:eEs:S:!:D:d:")) != EOF) {
switch (s)
{
case 'b':
case 'B':
BlackPointCompensation = TRUE;
break;
case 'd':
case 'D': ObserverAdaptationState = atof(xoptarg);
if (ObserverAdaptationState < 0 ||
ObserverAdaptationState > 1.0)
FatalError("Adaptation state should be 0..1");
break;
case 'v':
case 'V':
Verbose = TRUE;
break;
case 'i':
case 'I':
if (lIsDeviceLink)
FatalError("Device-link already specified");
cInpProf = xoptarg;
break;
case 'o':
case 'O':
if (lIsDeviceLink)
FatalError("Device-link already specified");
cOutProf = xoptarg;
break;
case 'l':
case 'L':
if (cInpProf != NULL || cOutProf != NULL)
FatalError("input/output profiles already specified");
cInpProf = xoptarg;
lIsDeviceLink = TRUE;
break;
case 'p':
case 'P':
cProofing = xoptarg;
break;
case 't':
case 'T':
Intent = atoi(xoptarg);
break;
case 'N':
case 'n':
IgnoreEmbedded = TRUE;
break;
case 'e':
case 'E':
EmbedProfile = TRUE;
break;
case 'g':
case 'G':
GamutCheck = TRUE;
break;
case 'c':
case 'C':
PrecalcMode = atoi(xoptarg);
if (PrecalcMode < 0 || PrecalcMode > 2)
FatalError("Unknown precalc mode '%d'", PrecalcMode);
break;
case 'H':
case 'h': {
int a = atoi(xoptarg);
Help(a);
}
break;
case 'q':
case 'Q':
jpegQuality = atoi(xoptarg);
if (jpegQuality > 100) jpegQuality = 100;
if (jpegQuality < 0) jpegQuality = 0;
break;
case 'm':
case 'M':
ProofingIntent = atoi(xoptarg);
break;
case 's':
case 'S': SaveEmbedded = xoptarg;
break;
case '!':
if (sscanf(xoptarg, "%hu,%hu,%hu", &Alarm[0], &Alarm[1], &Alarm[2]) == 3) {
int i;
for (i=0; i < 3; i++) {
Alarm[i] = (Alarm[i] << 8) | Alarm[i];
}
}
break;
default:
FatalError("Unknown option - run without args to see valid ones");
}
}
}
int main(int argc, char* argv[])
{
InitUtils(NULL, "jpgicc");
HandleSwitches(argc, argv);
if ((argc - xoptind) != 2) {
Help(0);
}
OpenInput(argv[xoptind]);
OpenOutput(argv[xoptind+1]);
TransformImage(cInpProf, cOutProf);
if (Verbose) { fprintf(stdout, "\n"); fflush(stdout); }
Done();
return 0;
}
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