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/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* The Original Code is Copyright (C) 2012 Blender Foundation.
* All rights reserved.
*
* Contributor(s): Xavier Thomas
* Lukas Toene
* Sergey Sharybin
*
* ***** END GPL LICENSE BLOCK *****
*/
#ifndef __OCIO_CAPI_H__
#define __OCIO_CAPI_H__
#ifdef __cplusplus
extern "C" {
#endif
struct OCIO_GLSLDrawState;
#define OCIO_DECLARE_HANDLE(name) typedef struct name##__ { int unused; } *name
#define OCIO_ROLE_SCENE_LINEAR "scene_linear"
#define OCIO_ROLE_COLOR_PICKING "color_picking"
#define OCIO_ROLE_TEXTURE_PAINT "texture_paint"
#define OCIO_ROLE_DEFAULT_BYTE "default_byte"
#define OCIO_ROLE_DEFAULT_FLOAT "default_float"
#define OCIO_ROLE_DEFAULT_SEQUENCER "default_sequencer"
OCIO_DECLARE_HANDLE(OCIO_ConstConfigRcPtr);
OCIO_DECLARE_HANDLE(OCIO_ConstColorSpaceRcPtr);
OCIO_DECLARE_HANDLE(OCIO_ConstProcessorRcPtr);
OCIO_DECLARE_HANDLE(OCIO_ConstContextRcPtr);
OCIO_DECLARE_HANDLE(OCIO_PackedImageDesc);
OCIO_DECLARE_HANDLE(OCIO_DisplayTransformRcPtr);
OCIO_DECLARE_HANDLE(OCIO_ConstTransformRcPtr);
OCIO_DECLARE_HANDLE(OCIO_ExponentTransformRcPtr);
OCIO_DECLARE_HANDLE(OCIO_MatrixTransformRcPtr);
OCIO_DECLARE_HANDLE(OCIO_ConstLookRcPtr);
/* This structure is used to pass curve mapping settings from
* blender's DNA structure stored in view transform settings
* to a generic OpenColorIO C-API.
*/
typedef struct OCIO_CurveMappingSettings {
/* This is a LUT which contain values for all 4 curve mapping tables
* (combined, R, G and B).
*
* Element I for table T is stored at I * 4 + T element of this LUT.
*
* This array is usually returned by curvemapping_table_RGBA().
*/
float *lut;
/* Size of single curve mapping table, 1/4 size of lut array. */
int lut_size;
/* Extend extrapolation flags for all the tables.
* if use_extend_extrapolate[T] != 0 means extrapolation for
* table T is needed.
*/
int use_extend_extrapolate[4];
/* Minimal X value of the curve mapping tables. */
float mintable[4];
/* Per curve mapping table range. */
float range[4];
/* Lower extension value, stored as per-component arrays. */
float ext_in_x[4], ext_in_y[4];
/* Higher extension value, stored as per-component arrays. */
float ext_out_x[4], ext_out_y[4];
/* First points of the tables, both X and Y values.
* Needed for easier and faster access when extrapolating.
*/
float first_x[4], first_y[4];
/* Last points of the tables, both X and Y values.
* Needed for easier and faster access when extrapolating.
*/
float last_x[4], last_y[4];
/* Premultiplication settings: black level and scale to match
* with white level.
*/
float black[3], bwmul[3];
/* Cache id of the original curve mapping, used to detect when
* upload of new settings to GPU is needed.
*/
size_t cache_id;
} OCIO_CurveMappingSettings;
void OCIO_init(void);
void OCIO_exit(void);
OCIO_ConstConfigRcPtr *OCIO_getCurrentConfig(void);
void OCIO_setCurrentConfig(const OCIO_ConstConfigRcPtr *config);
OCIO_ConstConfigRcPtr *OCIO_configCreateFromEnv(void);
OCIO_ConstConfigRcPtr *OCIO_configCreateFromFile(const char* filename);
OCIO_ConstConfigRcPtr *OCIO_configCreateFallback(void);
void OCIO_configRelease(OCIO_ConstConfigRcPtr *config);
int OCIO_configGetNumColorSpaces(OCIO_ConstConfigRcPtr *config);
const char *OCIO_configGetColorSpaceNameByIndex(OCIO_ConstConfigRcPtr *config, int index);
OCIO_ConstColorSpaceRcPtr *OCIO_configGetColorSpace(OCIO_ConstConfigRcPtr *config, const char *name);
int OCIO_configGetIndexForColorSpace(OCIO_ConstConfigRcPtr *config, const char *name);
int OCIO_colorSpaceIsInvertible(OCIO_ConstColorSpaceRcPtr *cs);
int OCIO_colorSpaceIsData(OCIO_ConstColorSpaceRcPtr *cs);
void OCIO_colorSpaceRelease(OCIO_ConstColorSpaceRcPtr *cs);
const char *OCIO_configGetDefaultDisplay(OCIO_ConstConfigRcPtr *config);
int OCIO_configGetNumDisplays(OCIO_ConstConfigRcPtr *config);
const char *OCIO_configGetDisplay(OCIO_ConstConfigRcPtr *config, int index);
const char *OCIO_configGetDefaultView(OCIO_ConstConfigRcPtr *config, const char *display);
int OCIO_configGetNumViews(OCIO_ConstConfigRcPtr *config, const char *display);
const char *OCIO_configGetView(OCIO_ConstConfigRcPtr *config, const char *display, int index);
const char *OCIO_configGetDisplayColorSpaceName(OCIO_ConstConfigRcPtr *config, const char *display, const char *view);
void OCIO_configGetDefaultLumaCoefs(OCIO_ConstConfigRcPtr *config, float *rgb);
int OCIO_configGetNumLooks(OCIO_ConstConfigRcPtr *config);
const char *OCIO_configGetLookNameByIndex(OCIO_ConstConfigRcPtr *config, int index);
OCIO_ConstLookRcPtr *OCIO_configGetLook(OCIO_ConstConfigRcPtr *config, const char *name);
const char *OCIO_lookGetProcessSpace(OCIO_ConstLookRcPtr *look);
void OCIO_lookRelease(OCIO_ConstLookRcPtr *look);
OCIO_ConstProcessorRcPtr *OCIO_configGetProcessorWithNames(OCIO_ConstConfigRcPtr *config, const char *srcName, const char *dstName);
OCIO_ConstProcessorRcPtr *OCIO_configGetProcessor(OCIO_ConstConfigRcPtr *config, OCIO_ConstTransformRcPtr *transform);
void OCIO_processorApply(OCIO_ConstProcessorRcPtr *processor, OCIO_PackedImageDesc *img);
void OCIO_processorApply_predivide(OCIO_ConstProcessorRcPtr *processor, OCIO_PackedImageDesc *img);
void OCIO_processorApplyRGB(OCIO_ConstProcessorRcPtr *processor, float *pixel);
void OCIO_processorApplyRGBA(OCIO_ConstProcessorRcPtr *processor, float *pixel);
void OCIO_processorApplyRGBA_predivide(OCIO_ConstProcessorRcPtr *processor, float *pixel);
void OCIO_processorRelease(OCIO_ConstProcessorRcPtr *p);
const char *OCIO_colorSpaceGetName(OCIO_ConstColorSpaceRcPtr *cs);
const char *OCIO_colorSpaceGetDescription(OCIO_ConstColorSpaceRcPtr *cs);
const char *OCIO_colorSpaceGetFamily(OCIO_ConstColorSpaceRcPtr *cs);
OCIO_DisplayTransformRcPtr *OCIO_createDisplayTransform(void);
void OCIO_displayTransformSetInputColorSpaceName(OCIO_DisplayTransformRcPtr *dt, const char *name);
void OCIO_displayTransformSetDisplay(OCIO_DisplayTransformRcPtr *dt, const char *name);
void OCIO_displayTransformSetView(OCIO_DisplayTransformRcPtr *dt, const char *name);
void OCIO_displayTransformSetDisplayCC(OCIO_DisplayTransformRcPtr *dt, OCIO_ConstTransformRcPtr *et);
void OCIO_displayTransformSetLinearCC(OCIO_DisplayTransformRcPtr *dt, OCIO_ConstTransformRcPtr *et);
void OCIO_displayTransformSetLooksOverride(OCIO_DisplayTransformRcPtr *dt, const char *looks);
void OCIO_displayTransformSetLooksOverrideEnabled(OCIO_DisplayTransformRcPtr *dt, bool enabled);
void OCIO_displayTransformRelease(OCIO_DisplayTransformRcPtr *dt);
OCIO_PackedImageDesc *OCIO_createOCIO_PackedImageDesc(float *data, long width, long height, long numChannels,
long chanStrideBytes, long xStrideBytes, long yStrideBytes);
void OCIO_PackedImageDescRelease(OCIO_PackedImageDesc *p);
OCIO_ExponentTransformRcPtr *OCIO_createExponentTransform(void);
void OCIO_exponentTransformSetValue(OCIO_ExponentTransformRcPtr *et, const float *exponent);
void OCIO_exponentTransformRelease(OCIO_ExponentTransformRcPtr *et);
OCIO_MatrixTransformRcPtr *OCIO_createMatrixTransform(void);
void OCIO_matrixTransformSetValue(OCIO_MatrixTransformRcPtr *mt, const float *m44, const float *offset4);
void OCIO_matrixTransformRelease(OCIO_MatrixTransformRcPtr *mt);
void OCIO_matrixTransformScale(float *m44, float *offset4, const float *scale4);
int OCIO_supportGLSLDraw(void);
int OCIO_setupGLSLDraw(struct OCIO_GLSLDrawState **state_r, OCIO_ConstProcessorRcPtr *processor,
OCIO_CurveMappingSettings *curve_mapping_settings, float dither, bool predivide);
void OCIO_finishGLSLDraw(struct OCIO_GLSLDrawState *state);
void OCIO_freeOGLState(struct OCIO_GLSLDrawState *state);
const char *OCIO_getVersionString(void);
int OCIO_getVersionHex(void);
#ifdef __cplusplus
}
#endif
#endif /* OCIO_CAPI_H */
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