Revert 129510 - Adding qcms to use for handling ICC tagged images. This will be used by chromium we…

third_party/qcms/matrix.c

Index: third_party/qcms/matrix.c
===================================================================
--- third_party/qcms/matrix.c	(revision 129548)
+++ third_party/qcms/matrix.c	(working copy)
@@ -1,136 +0,0 @@
-/* vim: set ts=8 sw=8 noexpandtab: */
-//  qcms
-//  Copyright (C) 2009 Mozilla Foundation
-//  Copyright (C) 1998-2007 Marti Maria
-//
-// 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.
-
-#include <stdlib.h>
-#include "qcmsint.h"
-#include "matrix.h"
-
-struct vector matrix_eval(struct matrix mat, struct vector v)
-{
-	struct vector result;
-	result.v[0] = mat.m[0][0]*v.v[0] + mat.m[0][1]*v.v[1] + mat.m[0][2]*v.v[2];
-	result.v[1] = mat.m[1][0]*v.v[0] + mat.m[1][1]*v.v[1] + mat.m[1][2]*v.v[2];
-	result.v[2] = mat.m[2][0]*v.v[0] + mat.m[2][1]*v.v[1] + mat.m[2][2]*v.v[2];
-	return result;
-}
-
-//XXX: should probably pass by reference and we could
-//probably reuse this computation in matrix_invert
-float matrix_det(struct matrix mat)
-{
-	float det;
-	det = mat.m[0][0]*mat.m[1][1]*mat.m[2][2] +
-		mat.m[0][1]*mat.m[1][2]*mat.m[2][0] +
-		mat.m[0][2]*mat.m[1][0]*mat.m[2][1] -
-		mat.m[0][0]*mat.m[1][2]*mat.m[2][1] -
-		mat.m[0][1]*mat.m[1][0]*mat.m[2][2] -
-		mat.m[0][2]*mat.m[1][1]*mat.m[2][0];
-	return det;
-}
-
-/* from pixman and cairo and Mathematics for Game Programmers */
-/* lcms uses gauss-jordan elimination with partial pivoting which is
- * less efficient and not as numerically stable. See Mathematics for
- * Game Programmers. */
-struct matrix matrix_invert(struct matrix mat)
-{
-	struct matrix dest_mat;
-	int i,j;
-	static int a[3] = { 2, 2, 1 };
-	static int b[3] = { 1, 0, 0 };
-
-	/* inv  (A) = 1/det (A) * adj (A) */
-	float det = matrix_det(mat);
-
-	if (det == 0) {
-		dest_mat.invalid = true;
-	} else {
-		dest_mat.invalid = false;
-	}
-
-	det = 1/det;
-
-	for (j = 0; j < 3; j++) {
-		for (i = 0; i < 3; i++) {
-			double p;
-			int ai = a[i];
-			int aj = a[j];
-			int bi = b[i];
-			int bj = b[j];
-
-			p = mat.m[ai][aj] * mat.m[bi][bj] -
-				mat.m[ai][bj] * mat.m[bi][aj];
-			if (((i + j) & 1) != 0)
-				p = -p;
-
-			dest_mat.m[j][i] = det * p;
-		}
-	}
-	return dest_mat;
-}
-
-struct matrix matrix_identity(void)
-{
-	struct matrix i;
-	i.m[0][0] = 1;
-	i.m[0][1] = 0;
-	i.m[0][2] = 0;
-	i.m[1][0] = 0;
-	i.m[1][1] = 1;
-	i.m[1][2] = 0;
-	i.m[2][0] = 0;
-	i.m[2][1] = 0;
-	i.m[2][2] = 1;
-	i.invalid = false;
-	return i;
-}
-
-struct matrix matrix_invalid(void)
-{
-	struct matrix inv = matrix_identity();
-	inv.invalid = true;
-	return inv;
-}
-
-
-/* from pixman */
-/* MAT3per... */
-struct matrix matrix_multiply(struct matrix a, struct matrix b)
-{
-	struct matrix result;
-	int dx, dy;
-	int o;
-	for (dy = 0; dy < 3; dy++) {
-		for (dx = 0; dx < 3; dx++) {
-			double v = 0;
-			for (o = 0; o < 3; o++) {
-				v += a.m[dy][o] * b.m[o][dx];
-			}
-			result.m[dy][dx] = v;
-		}
-	}
-	result.invalid = a.invalid || b.invalid;
-	return result;
-}
-
-