Lossless JPEG support: Add copyright attributions

Referring to libjpeg-turbo#402 (comment) and libjpeg-turbo#402 (comment) Ken Murchison clarified that it was his intent to release the lossless JPEG patch under the IJG License and that adding his name to the copyright headers would be sufficient to acknowledge that any derivatives are based on his work.
jzubizarreta · Oct 21, 2022 · ec6e451 · ec6e451
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diff --git a/cdjpeg.h b/cdjpeg.h
@@ -1,8 +1,10 @@
 /*
  * cdjpeg.h
  *
+ * This file was part of the Independent JPEG Group's software:
  * Copyright (C) 1994-1997, Thomas G. Lane.
- * This file is part of the Independent JPEG Group's software.
+ * Lossless JPEG Modifications:
+ * Copyright (C) 1999, Ken Murchison.
  * For conditions of distribution and use, see the accompanying README file.
  *
  * This file contains common declarations for the sample applications

diff --git a/cjpeg.1 b/cjpeg.1
@@ -1,4 +1,4 @@
-.TH CJPEG 1 "20 March 1998"
+.TH CJPEG 1 "27 April 1999"
 .SH NAME
 cjpeg \- compress an image file to a JPEG file
 .SH SYNOPSIS

diff --git a/cjpeg.c b/cjpeg.c
@@ -1,8 +1,10 @@
 /*
  * cjpeg.c
  *
+ * This file was part of the Independent JPEG Group's software:
  * Copyright (C) 1991-1998, Thomas G. Lane.
- * This file is part of the Independent JPEG Group's software.
+ * Lossless JPEG Modifications:
+ * Copyright (C) 1999, Ken Murchison.
  * For conditions of distribution and use, see the accompanying README file.
  *
  * This file contains a command-line user interface for the JPEG compressor.

diff --git a/filelist.doc b/filelist.doc
@@ -1,7 +1,9 @@
 IJG JPEG LIBRARY:  FILE LIST
 
+This file was part of the Independent JPEG Group's software:
 Copyright (C) 1994-1997, Thomas G. Lane.
-This file is part of the Independent JPEG Group's software.
+Lossless JPEG Modifications:
+Copyright (C) 1999, Ken Murchison.
 For conditions of distribution and use, see the accompanying README file.
 
 

diff --git a/jcapimin.c b/jcapimin.c
@@ -1,8 +1,10 @@
 /*
  * jcapimin.c
  *
+ * This file was part of the Independent JPEG Group's software:
  * Copyright (C) 1994-1998, Thomas G. Lane.
- * This file is part of the Independent JPEG Group's software.
+ * Lossless JPEG Modifications:
+ * Copyright (C) 1999, Ken Murchison.
  * For conditions of distribution and use, see the accompanying README file.
  *
  * This file contains application interface code for the compression half

diff --git a/jcapistd.c b/jcapistd.c
@@ -1,8 +1,10 @@
 /*
  * jcapistd.c
  *
+ * This file was part of the Independent JPEG Group's software:
  * Copyright (C) 1994-1996, Thomas G. Lane.
- * This file is part of the Independent JPEG Group's software.
+ * Lossless JPEG Modifications:
+ * Copyright (C) 1999, Ken Murchison.
  * For conditions of distribution and use, see the accompanying README file.
  *
  * This file contains application interface code for the compression half

diff --git a/jccoefct.c b/jccoefct.c
@@ -1,8 +1,10 @@
 /*
  * jccoefct.c
  *
+ * This file was part of the Independent JPEG Group's software:
  * Copyright (C) 1994-1998, Thomas G. Lane.
- * This file is part of the Independent JPEG Group's software.
+ * Lossless JPEG Modifications:
+ * Copyright (C) 1999, Ken Murchison.
  * For conditions of distribution and use, see the accompanying README file.
  *
  * This file contains the coefficient buffer controller for compression.

diff --git a/jcdctmgr.c b/jcdctmgr.c
@@ -1,8 +1,10 @@
 /*
  * jcdctmgr.c
  *
+ * This file was part of the Independent JPEG Group's software:
  * Copyright (C) 1994-1998, Thomas G. Lane.
- * This file is part of the Independent JPEG Group's software.
+ * Lossless JPEG Modifications:
+ * Copyright (C) 1999, Ken Murchison.
  * For conditions of distribution and use, see the accompanying README file.
  *
  * This file contains the forward-DCT management logic.

diff --git a/jcdiffct.c b/jcdiffct.c
@@ -1,8 +1,10 @@
 /*
  * jcdiffct.c
  *
+ * This file was part of the Independent JPEG Group's software:
  * Copyright (C) 1994-1998, Thomas G. Lane.
- * This file is part of the Independent JPEG Group's software.
+ * Lossless JPEG Modifications:
+ * Copyright (C) 1999, Ken Murchison.
  * For conditions of distribution and use, see the accompanying README file.
  *
  * This file contains the difference buffer controller for compression.

diff --git a/jchuff.c b/jchuff.c
@@ -1,8 +1,10 @@
 /*
  * jchuff.c
  *
+ * This file was part of the Independent JPEG Group's software:
  * Copyright (C) 1991-1998, Thomas G. Lane.
- * This file is part of the Independent JPEG Group's software.
+ * Lossless JPEG Modifications:
+ * Copyright (C) 1999, Ken Murchison.
  * For conditions of distribution and use, see the accompanying README file.
  *
  * This file contains Huffman entropy decoding routines which are shared

diff --git a/jchuff.h b/jchuff.h
@@ -1,8 +1,10 @@
 /*
  * jchuff.h
  *
+ * This file was part of the Independent JPEG Group's software:
  * Copyright (C) 1991-1997, Thomas G. Lane.
- * This file is part of the Independent JPEG Group's software.
+ * Lossless JPEG Modifications:
+ * Copyright (C) 1999, Ken Murchison.
  * For conditions of distribution and use, see the accompanying README file.
  *
  * This file contains declarations for Huffman entropy encoding routines

diff --git a/jcinit.c b/jcinit.c
@@ -1,8 +1,10 @@
 /*
  * jcinit.c
  *
+ * This file was part of the Independent JPEG Group's software:
  * Copyright (C) 1991-1997, Thomas G. Lane.
- * This file is part of the Independent JPEG Group's software.
+ * Lossless JPEG Modifications:
+ * Copyright (C) 1999, Ken Murchison.
  * For conditions of distribution and use, see the accompanying README file.
  *
  * This file contains initialization logic for the JPEG compressor.

diff --git a/jclhuff.c b/jclhuff.c
@@ -1,8 +1,10 @@
 /*
  * jclhuff.c
  *
+ * This file was part of the Independent JPEG Group's software:
  * Copyright (C) 1991-1998, Thomas G. Lane.
- * This file is part of the Independent JPEG Group's software.
+ * Lossless JPEG Modifications:
+ * Copyright (C) 1999, Ken Murchison.
  * For conditions of distribution and use, see the accompanying README file.
  *
  * This file contains Huffman entropy encoding routines for lossless JPEG.

diff --git a/jclossls.c b/jclossls.c
@@ -1,8 +1,10 @@
 /*
  * jclossls.c
  *
+ * This file was part of the Independent JPEG Group's software:
  * Copyright (C) 1998, Thomas G. Lane.
- * This file is part of the Independent JPEG Group's software.
+ * Lossless JPEG Modifications:
+ * Copyright (C) 1999, Ken Murchison.
  * For conditions of distribution and use, see the accompanying README file.
  *
  * This file contains the control logic for the lossless JPEG compressor.

diff --git a/jclossy.c b/jclossy.c
@@ -1,8 +1,10 @@
 /*
  * jclossy.c
  *
+ * This file was part of the Independent JPEG Group's software:
  * Copyright (C) 1998, Thomas G. Lane.
- * This file is part of the Independent JPEG Group's software.
+ * Lossless JPEG Modifications:
+ * Copyright (C) 1999, Ken Murchison.
  * For conditions of distribution and use, see the accompanying README file.
  *
  * This file contains the control logic for the lossy JPEG compressor.

diff --git a/jcmainct.c b/jcmainct.c
@@ -1,8 +1,10 @@
 /*
  * jcmainct.c
  *
+ * This file was part of the Independent JPEG Group's software:
  * Copyright (C) 1994-1998, Thomas G. Lane.
- * This file is part of the Independent JPEG Group's software.
+ * Lossless JPEG Modifications:
+ * Copyright (C) 1999, Ken Murchison.
  * For conditions of distribution and use, see the accompanying README file.
  *
  * This file contains the main buffer controller for compression.

diff --git a/jcmarker.c b/jcmarker.c
@@ -1,8 +1,10 @@
 /*
  * jcmarker.c
  *
+ * This file was part of the Independent JPEG Group's software:
  * Copyright (C) 1991-1998, Thomas G. Lane.
- * This file is part of the Independent JPEG Group's software.
+ * Lossless JPEG Modifications:
+ * Copyright (C) 1999, Ken Murchison.
  * For conditions of distribution and use, see the accompanying README file.
  *
  * This file contains routines to write JPEG datastream markers.

diff --git a/jcmaster.c b/jcmaster.c
@@ -1,8 +1,10 @@
 /*
  * jcmaster.c
  *
+ * This file was part of the Independent JPEG Group's software:
  * Copyright (C) 1991-1998, Thomas G. Lane.
- * This file is part of the Independent JPEG Group's software.
+ * Lossless JPEG Modifications:
+ * Copyright (C) 1999, Ken Murchison.
  * For conditions of distribution and use, see the accompanying README file.
  *
  * This file contains master control logic for the JPEG compressor.

diff --git a/jcodec.c b/jcodec.c
@@ -1,8 +1,10 @@
 /*
  * jcodec.c
  *
+ * This file was part of the Independent JPEG Group's software:
  * Copyright (C) 1998, Thomas G. Lane.
- * This file is part of the Independent JPEG Group's software.
+ * Lossless JPEG Modifications:
+ * Copyright (C) 1999, Ken Murchison.
  * For conditions of distribution and use, see the accompanying README file.
  *
  * This file contains utility functions for the JPEG codec(s).

diff --git a/jcparam.c b/jcparam.c
@@ -1,8 +1,10 @@
 /*
  * jcparam.c
  *
+ * This file was part of the Independent JPEG Group's software:
  * Copyright (C) 1991-1998, Thomas G. Lane.
- * This file is part of the Independent JPEG Group's software.
+ * Lossless JPEG Modifications:
+ * Copyright (C) 1999, Ken Murchison.
  * For conditions of distribution and use, see the accompanying README file.
  *
  * This file contains optional default-setting code for the JPEG compressor.

diff --git a/jcphuff.c b/jcphuff.c
@@ -1,8 +1,10 @@
 /*
  * jcphuff.c
  *
+ * This file was part of the Independent JPEG Group's software:
  * Copyright (C) 1995-1998, Thomas G. Lane.
- * This file is part of the Independent JPEG Group's software.
+ * Lossless JPEG Modifications:
+ * Copyright (C) 1999, Ken Murchison.
  * For conditions of distribution and use, see the accompanying README file.
  *
  * This file contains Huffman entropy encoding routines for progressive JPEG.

diff --git a/jcpred.c b/jcpred.c
@@ -1,8 +1,10 @@
 /*
  * jcpred.c
  *
+ * This file was part of the Independent JPEG Group's software:
  * Copyright (C) 1998, Thomas G. Lane.
- * This file is part of the Independent JPEG Group's software.
+ * Lossless JPEG Modifications:
+ * Copyright (C) 1999, Ken Murchison.
  * For conditions of distribution and use, see the accompanying README file.
  *
  * This file contains sample differencing for lossless JPEG.

diff --git a/jcprepct.c b/jcprepct.c
@@ -1,8 +1,10 @@
 /*
  * jcprepct.c
  *
+ * This file was part of the Independent JPEG Group's software:
  * Copyright (C) 1994-1998, Thomas G. Lane.
- * This file is part of the Independent JPEG Group's software.
+ * Lossless JPEG Modifications:
+ * Copyright (C) 1999, Ken Murchison.
  * For conditions of distribution and use, see the accompanying README file.
  *
  * This file contains the compression preprocessing controller.

diff --git a/jcsample.c b/jcsample.c
@@ -1,8 +1,10 @@
 /*
  * jcsample.c
  *
+ * This file was part of the Independent JPEG Group's software:
  * Copyright (C) 1991-1998, Thomas G. Lane.
- * This file is part of the Independent JPEG Group's software.
+ * Lossless JPEG Modifications:
+ * Copyright (C) 1999, Ken Murchison.
  * For conditions of distribution and use, see the accompanying README file.
  *
  * This file contains downsampling routines.

diff --git a/jcscale.c b/jcscale.c
@@ -1,8 +1,10 @@
 /*
  * jcscale.c
  *
+ * This file was part of the Independent JPEG Group's software:
  * Copyright (C) 1998, Thomas G. Lane.
- * This file is part of the Independent JPEG Group's software.
+ * Lossless JPEG Modifications:
+ * Copyright (C) 1999, Ken Murchison.
  * For conditions of distribution and use, see the accompanying README file.
  *
  * This file contains sample downscaling by 2^Pt for lossless JPEG.

diff --git a/jcshuff.c b/jcshuff.c
@@ -1,8 +1,10 @@
 /*
  * jcshuff.c
  *
+ * This file was part of the Independent JPEG Group's software:
  * Copyright (C) 1991-1998, Thomas G. Lane.
- * This file is part of the Independent JPEG Group's software.
+ * Lossless JPEG Modifications:
+ * Copyright (C) 1999, Ken Murchison.
  * For conditions of distribution and use, see the accompanying README file.
  *
  * This file contains Huffman entropy encoding routines for sequential JPEG.

diff --git a/jctrans.c b/jctrans.c
@@ -1,8 +1,10 @@
 /*
  * jctrans.c
  *
+ * This file was part of the Independent JPEG Group's software:
  * Copyright (C) 1995-1998, Thomas G. Lane.
- * This file is part of the Independent JPEG Group's software.
+ * Lossless JPEG Modifications:
+ * Copyright (C) 1999, Ken Murchison.
  * For conditions of distribution and use, see the accompanying README file.
  *
  * This file contains library routines for transcoding compression,

diff --git a/jdapimin.c b/jdapimin.c
@@ -1,8 +1,10 @@
 /*
  * jdapimin.c
  *
+ * This file was part of the Independent JPEG Group's software:
  * Copyright (C) 1994-1998, Thomas G. Lane.
- * This file is part of the Independent JPEG Group's software.
+ * Lossless JPEG Modifications:
+ * Copyright (C) 1999, Ken Murchison.
  * For conditions of distribution and use, see the accompanying README file.
  *
  * This file contains application interface code for the decompression half

diff --git a/jdapistd.c b/jdapistd.c
@@ -1,8 +1,10 @@
 /*
  * jdapistd.c
  *
+ * This file was part of the Independent JPEG Group's software:
  * Copyright (C) 1994-1998, Thomas G. Lane.
- * This file is part of the Independent JPEG Group's software.
+ * Lossless JPEG Modifications:
+ * Copyright (C) 1999, Ken Murchison.
  * For conditions of distribution and use, see the accompanying README file.
  *
  * This file contains application interface code for the decompression half

diff --git a/jdcoefct.c b/jdcoefct.c
@@ -1,8 +1,10 @@
 /*
  * jdcoefct.c
  *
+ * This file was part of the Independent JPEG Group's software:
  * Copyright (C) 1994-1998, Thomas G. Lane.
- * This file is part of the Independent JPEG Group's software.
+ * Lossless JPEG Modifications:
+ * Copyright (C) 1999, Ken Murchison.
  * For conditions of distribution and use, see the accompanying README file.
  *
  * This file contains the coefficient buffer controller for decompression.

diff --git a/jddctmgr.c b/jddctmgr.c
@@ -1,8 +1,10 @@
 /*
  * jddctmgr.c
  *
+ * This file was part of the Independent JPEG Group's software:
  * Copyright (C) 1994-1998, Thomas G. Lane.
- * This file is part of the Independent JPEG Group's software.
+ * Lossless JPEG Modifications:
+ * Copyright (C) 1999, Ken Murchison.
  * For conditions of distribution and use, see the accompanying README file.
  *
  * This file contains the inverse-DCT management logic.

diff --git a/jddiffct.c b/jddiffct.c
@@ -1,8 +1,10 @@
 /*
  * jddiffct.c
  *
+ * This file was part of the Independent JPEG Group's software:
  * Copyright (C) 1994-1998, Thomas G. Lane.
- * This file is part of the Independent JPEG Group's software.
+ * Lossless JPEG Modifications:
+ * Copyright (C) 1999, Ken Murchison.
  * For conditions of distribution and use, see the accompanying README file.
  *
  * This file contains the [un]difference buffer controller for decompression.

diff --git a/jdhuff.c b/jdhuff.c
@@ -1,8 +1,10 @@
 /*
  * jdhuff.c
  *
+ * This file was part of the Independent JPEG Group's software:
  * Copyright (C) 1991-1998, Thomas G. Lane.
- * This file is part of the Independent JPEG Group's software.
+ * Lossless JPEG Modifications:
+ * Copyright (C) 1999, Ken Murchison.
  * For conditions of distribution and use, see the accompanying README file.
  *
  * This file contains Huffman entropy decoding routines which are shared