Move matrix.[ch] to shared

This means it can be used for the calibration tool.

1 files changed, 64 insertions, 0 deletions

diff --git a/shared/matrix.h b/shared/matrix.h
new file mode 100644
index 00000000..bacb7bf3
--- /dev/null
+++ b/shared/matrix.h
@@ -0,0 +1,64 @@
+/*
+ * Copyright © 2008-2011 Kristian Høgsberg
+ * Copyright © 2012 Collabora, Ltd.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of the copyright holders not be used in
+ * advertising or publicity pertaining to distribution of the software
+ * without specific, written prior permission.  The copyright holders make
+ * no representations about the suitability of this software for any
+ * purpose.  It is provided "as is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
+ * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
+ * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef WESTON_MATRIX_H
+#define WESTON_MATRIX_H
+
+struct weston_matrix {
+	float d[16];
+};
+
+struct weston_vector {
+	float f[4];
+};
+
+void
+weston_matrix_init(struct weston_matrix *matrix);
+void
+weston_matrix_multiply(struct weston_matrix *m, const struct weston_matrix *n);
+void
+weston_matrix_scale(struct weston_matrix *matrix, float x, float y, float z);
+void
+weston_matrix_translate(struct weston_matrix *matrix,
+			float x, float y, float z);
+void
+weston_matrix_transform(struct weston_matrix *matrix, struct weston_vector *v);
+
+int
+weston_matrix_invert(struct weston_matrix *inverse,
+		     const struct weston_matrix *matrix);
+
+#ifdef UNIT_TEST
+#  define MATRIX_TEST_EXPORT WL_EXPORT
+
+int
+matrix_invert(double *A, unsigned *p, const struct weston_matrix *matrix);
+
+void
+inverse_transform(const double *LU, const unsigned *p, float *v);
+
+#else
+#  define MATRIX_TEST_EXPORT static
+#endif
+
+#endif /* WESTON_MATRIX_H */