diff options
Diffstat (limited to 'lcms2mt/utils/jpgicc/jpgicc.c')
| -rw-r--r-- | lcms2mt/utils/jpgicc/jpgicc.c | 1263 |
1 files changed, 1263 insertions, 0 deletions
diff --git a/lcms2mt/utils/jpgicc/jpgicc.c b/lcms2mt/utils/jpgicc/jpgicc.c new file mode 100644 index 000000000..b4a880040 --- /dev/null +++ b/lcms2mt/utils/jpgicc/jpgicc.c @@ -0,0 +1,1263 @@ +//--------------------------------------------------------------------------------- +// +// 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 × 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 accurancy, 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(); + + + 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("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; +} + + + |