paste in cmyk2srgbjpeg
many thanks Nicolas
This commit is contained in:
John Cupitt
parent
c0b8b67987
commit
aede2cafce
@ -26,6 +26,7 @@
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- added --vips-profile, records and dumps thread timing and memory use info
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- added vipsprofile, visualises --vips-profile output
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- auto-vectorization-friendly inner loops
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- pasted in Nicolas's cmyk2srgbjpeg program, many thanks
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20/11/13 started 7.36.5
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- better cache sizing in unbuffered sequential mode
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@ -4,6 +4,7 @@ bin_PROGRAMS = \
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vips \
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edvips \
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vipsthumbnail \
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cmyk2srgbjpeg \
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header
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vips_SOURCES = vips.c
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436
tools/cmyk2srgbjpeg.c
Normal file
436
tools/cmyk2srgbjpeg.c
Normal file
@ -0,0 +1,436 @@
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/*
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* C program cmyk2srgbjpeg (CMYK image conversion to sRGB JPEG)
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*
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* Version 2.4
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*
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* USAGE
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*
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* cmyk2srgbjpeg INPUT_IMAGE OUTPUT_IMAGE_NAME_BEFORE_EXTENSION
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*
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* where
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*
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* INPUT_IMAGE_FILE is an image
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*
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* OUTPUT_IMAGE_NAME_BEFORE_EXTENSION is the desired name (possibly
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* including path) of the converted image if it is created, to
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* which a configurable extension identifying a JPEG image will be
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* appended (.jpg, as delivered).
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*
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* WHAT IT DOES
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*
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* cmyk2srgbjpeg first attempts to detect whether its file argument is
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* a CMYK image.
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*
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* If it does not identify the file as being CMYK, cmyk2srgbjpeg does
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* not do anything.
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*
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* If it determines INPUT_IMAGE_FILE to be CMYK, it converts it to
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* sRGB JPEG using the embedded colour profile if possible,
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* substituting a default ICC otherwise.
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*
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* The result of the conversion is saved into
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* OUTPUT_IMAGE_NAME_BEFORE_EXTENSION.jpg (if .jpg is the configured
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* extension), provided it points elsewhere than INPUT_IMAGE_FILE.
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*
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* CUSTOMISATION
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*
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* Numerous compile time options are set with #defines. See below.
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*
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* NON-LIBRARY REQUIREMENTS:
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*
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* The program expects to find a "backstop" CMYK ICC profile at the
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* location specified by CMYK2SRGBJPEG_BACKUP_CMYK_ICC. It also
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* expects to find an ICM profile specifying sRGB at the location
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* specified by CMYK2SRGBJPEG_SRGB_ICM. Full paths may be given.
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*
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* CREDITS
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*
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* The development of cmyk2srgb was partially funded by Booking.com.
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*
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* HISTORY
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*
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* 10/12/13
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* - pasted into vips source tree
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif /*HAVE_CONFIG_H*/
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#include <vips/intl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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/*
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* This program uses the "classic" (pre-vips8) API of the VIPS
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* library.
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*/
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#include <vips/vips.h>
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/*
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* Copyright 2011 Nicolas Robidoux, Adam Turcotte and John Cupitt. All
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* rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY NICOLAS ROBIDOUX, ADAM TURCOTTE AND
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* JOHN CUPITT ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL NICOLAS ROBIDOUX AND ADAM TURCOTTE OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* COMPILING
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*
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* Provided you have installed libvips and its dependencies (this can
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* be done by installing nip2 through your package manager, for
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* example) and pkg-config is configured correctly (package managers
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* generally do this for you), something like
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*
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* gcc -Wall -o cmyk2srgbjpeg cmyk2srgbjpeg.c \
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* `pkg-config --libs --cflags vips`
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*
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* should work. This gcc call assumes that pkg-config can find
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* vips. To find out the version(s) of the VIPS library that
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* pkg-config sees:
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*
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* pkg-config --list-all | grep vips
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*
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* If you prefer to leave the code alone, you may use the gcc -D
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* method of setting macro values instead of changing the values
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* below.
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*
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* Because cmyk2srgbjpeg is a driver and as such does very little,
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* there is little benefit to compiling it with "higher" optimisation
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* flags (like "-march=native -O2", appropriate if you are compiling
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* on the machine the code is to run on). If you want speed, compile
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* the libvips library itself (and its main dependencies) with
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* optimisation flags matched to your hardware. Better yet, install
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* lcms2-dev so libvips can link to it (unlike its predecessor,
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* lcms2-dev can convert in parallel).
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*
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* It is easy to add the capability to set VIPS runtime options to
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* this program. Depending on the target use, this may make a have a
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* big impact on speed and/or memory usage. As configured,
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* cmyk2srgbjpeg program will use little RAM at the expense of more
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* temporary disk space. Contact nicolas dot robidoux at gmail dot
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* com for details.
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*
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* Note that the program may emit error messages, for example
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*
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* vips warning: im_icc_import: intent 1 (RELATIVE) not ...
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* ... supported by profile; falling back to default intent ...
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* ... (usually PERCEPTUAL)
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*
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* Such messages do not directly affect the return codes.
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*/
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////////////////////////////////////////////////////////////////////////////////
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/* BEGINNING OF USER CONFIGURABLE #DEFINES */
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////////////////////////////////////////////////////////////////////////////////
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/*
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* BACKSTOP CMYK ICC COLOUR PROFILE
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*
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* Path+name of a "Backstop" CMYK compatible ICC profile. It is used
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* when an image detected to be CMYK is not found to have an embedded
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* profile. You may specify a full path. Many nip2 installs put a
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* usable one, namely HP5000_UVDuraImageGlossMaxQ.icc, in
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* /usr/local/share/nip2/data/.
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*
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* (Put in double quotes: It is a string.)
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*/
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#ifndef CMYK2SRGBJPEG_BACKSTOP_CMYK_ICC
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#define CMYK2SRGBJPEG_BACKSTOP_CMYK_ICC \
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"/usr/local/share/nip2/data/HP5000_UVDuraImageGlossMaxQ.icc"
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#endif
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////////////////////////////////////////////////////////////////////////////////
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/*
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* SRGB ICM COLOUR PROFILE
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*
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* Path+name of sRGB.icm. Many nip2 installs put a copy in
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* /usr/local/share/nip2/data/. Many ImageMagick installs put a copy
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* in /usr/local/etc/ImageMagick/.
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*
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* (Put in double quotes: It is a string.)
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*/
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#ifndef CMYK2SRGBJPEG_SRGB_ICM
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#define CMYK2SRGBJPEG_SRGB_ICM "/usr/local/share/nip2/data/sRGB.icm"
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#endif
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////////////////////////////////////////////////////////////////////////////////
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/*
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* RETURN CODES
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*
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* Modify to suit. They do not need to be different from each
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* other. For example, you could set all but
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* CMYK2SRGBJPEG_FATAL_ERROR to 0. Integers between 0 and 255 are
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* generally considered safer (although -1 for fatal errors is
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* somewhat traditional).
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*
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* The one return code identifier which is not self-explanatory is
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* CMYK2SRGBJPEG_CMYK_WITH_UNUSABLE_ICC. This return code is issued
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* when the program does not succeed in using an embedded ICC, but
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* successfully converts the image with the backstop ICC.
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*
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* Look into things when CMYK2SRGBJPEG_FATAL_ERROR,
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* CMYK2SRGBJPEG_CMYK_NO_ICC or CMYK2SRGBJPEG_CMYK_WITH_UNUSABLE_ICC
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* are returned.
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*/
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/*
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* Nothing was done (not detected as CMYK).
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*/
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#ifndef CMYK2SRGBJPEG_PROBABLY_NOT_CMYK
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#define CMYK2SRGBJPEG_PROBABLY_NOT_CMYK 0
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#endif
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/*
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* The program failed.
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*/
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#ifndef CMYK2SRGBJPEG_FATAL_ERROR
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#define CMYK2SRGBJPEG_FATAL_ERROR 1
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#endif
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/*
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* The program could not import with the embedded ICC profile, so the
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* backstop profile was substituted.
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*/
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#ifndef CMYK2SRGBJPEG_CMYK_WITH_UNUSABLE_ICC
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#define CMYK2SRGBJPEG_CMYK_WITH_UNUSABLE_ICC 2
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#endif
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/*
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* No embedded ICC profile was detected, so the backstop profile was
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* substituted.
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*/
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#ifndef CMYK2SRGBJPEG_CMYK_NO_ICC
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#define CMYK2SRGBJPEG_CMYK_NO_ICC 3
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#endif
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/*
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* Import was performed with the embedded ICC profile.
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*/
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#ifndef CMYK2SRGBJPEG_CMYK_WITH_USABLE_ICC
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#define CMYK2SRGBJPEG_CMYK_WITH_USABLE_ICC 4
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#endif
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////////////////////////////////////////////////////////////////////////////////
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/*
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* JPEG QUALITY SETTING
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*
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* Set to an integer value between 0 and 100. 99 is basically as good
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* as it gets. 95 should be good enough for natural images only shown
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* at a fraction of their original size.
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*/
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#ifndef CMYK2SRGBJPEG_JPEG_QUALITY
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#define CMYK2SRGBJPEG_JPEG_QUALITY 99
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#endif
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////////////////////////////////////////////////////////////////////////////////
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/*
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* JPEG EXTENSION USED WHEN SAVING TO DISK
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*
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* Must be recognised as a JPEG extension by VIPS. (A period is
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* inserted before it, of course.)
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*
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* (Put in double quotes.)
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*/
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#ifndef CMYK2SRGBJPEG_JPEG_EXTENSION
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#define CMYK2SRGBJPEG_JPEG_EXTENSION "jpg"
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#endif
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////////////////////////////////////////////////////////////////////////////////
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/*
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* COLOUR CONVERSION INTENT
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*
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* Use IM_INTENT_RELATIVE_COLORIMETRIC unless you know what you are
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* doing or you visually check the results.
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*/
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#ifndef CMYK2SRGBJPEG_CONVERSION_INTENT
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#define CMYK2SRGBJPEG_CONVERSION_INTENT IM_INTENT_RELATIVE_COLORIMETRIC
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#endif
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////////////////////////////////////////////////////////////////////////////////
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/* END OF USER CONFIGURABLE #DEFINES */
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////////////////////////////////////////////////////////////////////////////////
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static int
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cmyk2srgb( IMAGE *input_image, IMAGE *output_image )
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{
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int icc_profile_handling;
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/*
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* Does the input image have an embedded profile?
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*/
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if ( vips_image_get_typeof( input_image, "icc-profile-data" ) ) {
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/*
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* Yes. Try to import with the embedded ICC.
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*/
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/*
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* Intermediate result image to import to and export from.
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*/
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IMAGE *t1;
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if ( !( t1 = im_open_local( output_image, "intermediate", "p" ) )
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||
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( im_icc_import_embedded( input_image,
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t1,
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CMYK2SRGBJPEG_CONVERSION_INTENT ) )
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||
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( im_icc_export( t1,
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output_image,
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CMYK2SRGBJPEG_SRGB_ICM,
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CMYK2SRGBJPEG_CONVERSION_INTENT ) ) ) {
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/*
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* Unsuccessful.
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*/
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icc_profile_handling = CMYK2SRGBJPEG_CMYK_WITH_UNUSABLE_ICC;
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}
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else {
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/*
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* The embedded ICC worked.
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*/
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return CMYK2SRGBJPEG_CMYK_WITH_USABLE_ICC;
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}
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}
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else {
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/*
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* No embedded ICC.
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*/
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icc_profile_handling = CMYK2SRGBJPEG_CMYK_NO_ICC;
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}
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/*
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* Import with the backstop ICC profile.
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*/
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if ( im_icc_transform( input_image,
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output_image,
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CMYK2SRGBJPEG_BACKSTOP_CMYK_ICC,
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CMYK2SRGBJPEG_SRGB_ICM,
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CMYK2SRGBJPEG_CONVERSION_INTENT ) ) {
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return CMYK2SRGBJPEG_FATAL_ERROR;
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}
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return icc_profile_handling;
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}
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int
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main( int argc, char **argv )
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{
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IMAGE *input_image;
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int type;
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/*
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* Start up VIPS, check that there is only one argument (the
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* input file), and open it as an image.
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*/
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if ( ( vips_init( argv[0] ) )
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||
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( argc != 3 )
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||
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( !( input_image = im_open( argv[1], "r" ) ) ) ) {
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return CMYK2SRGBJPEG_FATAL_ERROR;
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}
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/*
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* Read the type and only do something if the input image is CMYK
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* (type 15).
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*/
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if ( ( !( vips_image_get_int( input_image, "Type", &type ) ) )
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&&
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( type == 15 ) ) {
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/*
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* Is OUTPUT_IMAGE_NAME_BEFORE_EXTENSION so long that we
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* can't safely add a period, an extension and JPEG quality
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* specifier (longest is ":100")?
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*/
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if ( strlen( argv[2] ) >
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VIPS_PATH_MAX - ( strlen( CMYK2SRGBJPEG_JPEG_EXTENSION ) + 5 ) ) {
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im_close( input_image );
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return CMYK2SRGBJPEG_FATAL_ERROR;
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}
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/*
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* Assemble the output filename from the second argument,
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* adding a period, the extension, and the JPEG quality
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* specifier.
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*/
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char output_filename[VIPS_PATH_MAX];
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vips_snprintf( output_filename,
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VIPS_PATH_MAX,
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"%s.%s:%d",
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argv[2],
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CMYK2SRGBJPEG_JPEG_EXTENSION,
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CMYK2SRGBJPEG_JPEG_QUALITY );
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/*
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* Open the output image.
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*/
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IMAGE *output_image;
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if ( !( output_image = im_open( output_filename, "w" ) ) ) {
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im_close( input_image );
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return CMYK2SRGBJPEG_FATAL_ERROR;
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}
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/*
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* The conversion occurs (or fails) here:
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*/
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const int return_code = cmyk2srgb( input_image, output_image );
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im_close( output_image );
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im_close( input_image );
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return return_code;
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}
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/*
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* Not detected as a CMYK image. Do nothing.
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*/
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im_close( input_image );
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return CMYK2SRGBJPEG_PROBABLY_NOT_CMYK;
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}
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