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Unified Diff: third_party/qcms/src/transform_util.h

Issue 2014023003: Add exact version of qcms used by Chrome for testing and comparison (Closed) Base URL: https://skia.googlesource.com/skia.git@master
Patch Set: Created 4 years, 7 months ago
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Index: third_party/qcms/src/transform_util.h
diff --git a/third_party/qcms/src/transform_util.h b/third_party/qcms/src/transform_util.h
new file mode 100644
index 0000000000000000000000000000000000000000..f83477aed66b51f7627086c4a3ebe47955b8cd62
--- /dev/null
+++ b/third_party/qcms/src/transform_util.h
@@ -0,0 +1,58 @@
+/* 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.
+
+#ifndef _QCMS_TRANSFORM_UTIL_H
+#define _QCMS_TRANSFORM_UTIL_H
+
+#include <stdlib.h>
+
+#define CLU(table,x,y,z) table[(x*len + y*x_len + z*xy_len)*3]
+
+//XXX: could use a bettername
+typedef uint16_t uint16_fract_t;
+
+float lut_interp_linear(double input_value, uint16_t *table, size_t length);
+float lut_interp_linear_float(float input_value, float *table, size_t length);
+uint16_t lut_interp_linear16(uint16_t input_value, uint16_t *table, size_t length);
+
+
+static inline float lerp(float a, float b, float t)
+{
+ return a*(1.f-t) + b*t;
+}
+
+unsigned char clamp_u8(float v);
+float clamp_float(float a);
+
+float u8Fixed8Number_to_float(uint16_t x);
+
+
+float *build_input_gamma_table(struct curveType *TRC);
+struct matrix build_colorant_matrix(qcms_profile *p);
+void build_output_lut(struct curveType *trc,
+ uint16_t **output_gamma_lut, size_t *output_gamma_lut_length);
+
+struct matrix matrix_invert(struct matrix mat);
+qcms_bool compute_precache(struct curveType *trc, uint8_t *output);
+
+#endif
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