[qcms] Add API to get parametric gamma curve data

third_party/qcms/src/qcms.h

 /* vim: set ts=8 sw=8 noexpandtab: */
 //  qcms
 //  Copyright (C) 2009 Mozilla Foundation
 //
 // 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:
@@ skipping 65 matching lines @@
 } qcms_output_type;
 
 /* Output data format for qcms_transform_get_input|output_trc_rgba() */
 typedef enum {
         QCMS_TRC_PARAMETRIC, // Not implemented.
         QCMS_TRC_FLOAT,      // Not implemented.
         QCMS_TRC_HALF_FLOAT, // IEE754: binary16.
         QCMS_TRC_USHORT,     // 0.16 fixed point.
 } qcms_trc_type;
 
+/* Output data of specific channel curve for qcms_profile_get_parametric_curve() */
+typedef enum {
+        QCMS_TRC_RED,
+        QCMS_TRC_GREEN,
+        QCMS_TRC_BLUE,
+} qcms_trc_channel;
+
 typedef struct {
         double x;
         double y;
         double Y;
 } qcms_CIE_xyY;
 
 typedef struct {
         qcms_CIE_xyY red;
         qcms_CIE_xyY green;
         qcms_CIE_xyY blue;
@@ skipping 31 matching lines @@
 qcms_bool qcms_profile_match(qcms_profile *p1, qcms_profile *p2);
 const char* qcms_profile_get_description(qcms_profile *profile);
 
 void qcms_profile_precache_output_transform(qcms_profile *profile);
 
 size_t qcms_profile_get_vcgt_channel_length(qcms_profile *profile);
 qcms_bool qcms_profile_get_vcgt_rgb_channels(qcms_profile *profile, unsigned short *data);
 
 float qcms_profile_ntsc_relative_gamut_size(qcms_profile *profile);
 
+size_t qcms_profile_get_parametric_curve(qcms_profile *profile, qcms_trc_channel channel, float data[7]);
+
 qcms_transform* qcms_transform_create(
                 qcms_profile *in, qcms_data_type in_type,
                 qcms_profile *out, qcms_data_type out_type,
                 qcms_intent intent);
 
 size_t qcms_transform_get_input_trc_rgba(
                 qcms_transform *transform, qcms_profile *in, qcms_trc_type type, unsigned short *data);
 size_t qcms_transform_get_output_trc_rgba(
                 qcms_transform *transform, qcms_profile *out, qcms_trc_type type, unsigned short *data);
 
@@ skipping 15 matching lines @@
 }
 #endif
 
 /*
  * In general, QCMS is not threadsafe. However, it should be safe to create
  * profile and transformation objects on different threads, so long as you
  * don't use the same objects on different threads at the same time.
  */
 
 #endif