Revert of [qcms] Fix build_output_lut to return correct data for parametric curves

third_party/qcms/src/transform_util.c

Index: third_party/qcms/src/transform_util.c
diff --git a/third_party/qcms/src/transform_util.c b/third_party/qcms/src/transform_util.c
index 3d84716ed553a5db9205bf560d03dfa4f0f64b1c..fc19b650f4013400ce1239dd5e974c005afca80e 100644
--- a/third_party/qcms/src/transform_util.c
+++ b/third_party/qcms/src/transform_util.c
@@ -600,8 +600,6 @@
                 float gamma_table[256];
                 uint16_t i;
                 uint16_t *output = malloc(sizeof(uint16_t)*256);
-                uint16_t *inverted;
-                int inverted_size = 256;
 
                 if (!output) {
                         *output_gamma_lut = NULL;
@@ -609,24 +607,11 @@
                 }
 
                 compute_curve_gamma_table_type_parametric(gamma_table, trc->parameter, trc->count);
-
+                *output_gamma_lut_length = 256;
                 for(i = 0; i < 256; i++) {
                         output[i] = (uint16_t)(gamma_table[i] * 65535);
                 }
-
-                //XXX: the choice of a minimum of 256 here is not backed by any theory,
-                //     measurement or data, however it is what lcms uses.
-                //     the maximum number we would need is 65535 because that's the
-                //     accuracy used for computing the pre cache table
-                if (inverted_size < 256)
-                        inverted_size = 256;
-
-                inverted = invert_lut(output, 256, inverted_size);
-                if (!inverted)
-                        return;
-                *output_gamma_lut = inverted;
-                *output_gamma_lut_length = inverted_size;
-                free(output);
+                *output_gamma_lut = output;
         } else {
                 if (trc->count == 0) {
                         *output_gamma_lut = build_linear_table(4096);