214 lines
9.2 KiB
C
214 lines
9.2 KiB
C
/* SPDX-FileCopyrightText: 2012 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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#ifndef __OCIO_CAPI_H__
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#define __OCIO_CAPI_H__
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct OCIO_GPUShader OCIO_GPUShader;
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#define OCIO_DECLARE_HANDLE(name) \
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struct name; \
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typedef struct name *name##Ptr;
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#define OCIO_ROLE_DATA "data"
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#define OCIO_ROLE_SCENE_LINEAR "scene_linear"
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#define OCIO_ROLE_COLOR_PICKING "color_picking"
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#define OCIO_ROLE_TEXTURE_PAINT "texture_paint"
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#define OCIO_ROLE_DEFAULT_BYTE "default_byte"
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#define OCIO_ROLE_DEFAULT_FLOAT "default_float"
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#define OCIO_ROLE_DEFAULT_SEQUENCER "default_sequencer"
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OCIO_DECLARE_HANDLE(OCIO_ConstConfigRc);
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OCIO_DECLARE_HANDLE(OCIO_ConstColorSpaceRc);
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OCIO_DECLARE_HANDLE(OCIO_ConstProcessorRc);
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OCIO_DECLARE_HANDLE(OCIO_ConstCPUProcessorRc);
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OCIO_DECLARE_HANDLE(OCIO_ConstContextRc);
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OCIO_DECLARE_HANDLE(OCIO_PackedImageDesc);
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OCIO_DECLARE_HANDLE(OCIO_ConstLookRc);
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/* Standard XYZ (D65) to linear Rec.709 transform. */
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static const float OCIO_XYZ_TO_REC709[3][3] = {{3.2404542f, -0.9692660f, 0.0556434f},
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{-1.5371385f, 1.8760108f, -0.2040259f},
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{-0.4985314f, 0.0415560f, 1.0572252f}};
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/* Standard ACES to XYZ (D65) transform.
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* Matches OpenColorIO builtin transform: UTILITY - ACES-AP0_to_CIE-XYZ-D65_BFD. */
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static const float OCIO_ACES_TO_XYZ[3][3] = {{0.938280f, 0.337369f, 0.001174f},
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{-0.004451f, 0.729522f, -0.003711f},
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{0.016628f, -0.066890f, 1.091595f}};
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/* This structure is used to pass curve mapping settings from
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* blender's DNA structure stored in view transform settings
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* to a generic OpenColorIO C-API.
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*/
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typedef struct OCIO_CurveMappingSettings {
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/* This is a LUT which contain values for all 4 curve mapping tables
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* (combined, R, G and B).
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*
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* Element I for table T is stored at I * 4 + T element of this LUT.
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*
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* This array is usually returned by curvemapping_table_RGBA().
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*/
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float *lut;
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/* Size of single curve mapping table, 1/4 size of lut array. */
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int lut_size;
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/* Extend extrapolation flags for all the tables.
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* if use_extend_extrapolate != 0 means extrapolation for
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* curve.
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*/
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int use_extend_extrapolate;
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/* Minimal X value of the curve mapping tables. */
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float mintable[4];
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/* Per curve mapping table range. */
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float range[4];
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/* Lower extension value, stored as per-component arrays. */
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float ext_in_x[4], ext_in_y[4];
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/* Higher extension value, stored as per-component arrays. */
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float ext_out_x[4], ext_out_y[4];
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/* First points of the tables, both X and Y values.
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* Needed for easier and faster access when extrapolating.
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*/
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float first_x[4], first_y[4];
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/* Last points of the tables, both X and Y values.
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* Needed for easier and faster access when extrapolating.
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*/
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float last_x[4], last_y[4];
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/* Premultiplication settings: black level and scale to match
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* with white level.
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*/
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float black[3], bwmul[3];
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/* Cache id of the original curve mapping, used to detect when
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* upload of new settings to GPU is needed.
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*/
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size_t cache_id;
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} OCIO_CurveMappingSettings;
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void OCIO_init(void);
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void OCIO_exit(void);
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OCIO_ConstConfigRcPtr *OCIO_getCurrentConfig(void);
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void OCIO_setCurrentConfig(const OCIO_ConstConfigRcPtr *config);
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OCIO_ConstConfigRcPtr *OCIO_configCreateFromEnv(void);
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OCIO_ConstConfigRcPtr *OCIO_configCreateFromFile(const char *filename);
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OCIO_ConstConfigRcPtr *OCIO_configCreateFallback(void);
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void OCIO_configRelease(OCIO_ConstConfigRcPtr *config);
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int OCIO_configGetNumColorSpaces(OCIO_ConstConfigRcPtr *config);
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const char *OCIO_configGetColorSpaceNameByIndex(OCIO_ConstConfigRcPtr *config, int index);
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OCIO_ConstColorSpaceRcPtr *OCIO_configGetColorSpace(OCIO_ConstConfigRcPtr *config,
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const char *name);
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int OCIO_configGetIndexForColorSpace(OCIO_ConstConfigRcPtr *config, const char *name);
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int OCIO_colorSpaceIsInvertible(OCIO_ConstColorSpaceRcPtr *cs);
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int OCIO_colorSpaceIsData(OCIO_ConstColorSpaceRcPtr *cs);
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void OCIO_colorSpaceIsBuiltin(OCIO_ConstConfigRcPtr *config,
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OCIO_ConstColorSpaceRcPtr *cs,
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bool *is_scene_linear,
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bool *is_srgb);
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void OCIO_colorSpaceRelease(OCIO_ConstColorSpaceRcPtr *cs);
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const char *OCIO_configGetDefaultDisplay(OCIO_ConstConfigRcPtr *config);
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int OCIO_configGetNumDisplays(OCIO_ConstConfigRcPtr *config);
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const char *OCIO_configGetDisplay(OCIO_ConstConfigRcPtr *config, int index);
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const char *OCIO_configGetDefaultView(OCIO_ConstConfigRcPtr *config, const char *display);
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int OCIO_configGetNumViews(OCIO_ConstConfigRcPtr *config, const char *display);
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const char *OCIO_configGetView(OCIO_ConstConfigRcPtr *config, const char *display, int index);
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const char *OCIO_configGetDisplayColorSpaceName(OCIO_ConstConfigRcPtr *config,
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const char *display,
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const char *view);
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void OCIO_configGetDefaultLumaCoefs(OCIO_ConstConfigRcPtr *config, float *rgb);
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void OCIO_configGetXYZtoSceneLinear(OCIO_ConstConfigRcPtr *config,
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float xyz_to_scene_linear[3][3]);
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int OCIO_configGetNumLooks(OCIO_ConstConfigRcPtr *config);
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const char *OCIO_configGetLookNameByIndex(OCIO_ConstConfigRcPtr *config, int index);
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OCIO_ConstLookRcPtr *OCIO_configGetLook(OCIO_ConstConfigRcPtr *config, const char *name);
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const char *OCIO_lookGetProcessSpace(OCIO_ConstLookRcPtr *look);
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void OCIO_lookRelease(OCIO_ConstLookRcPtr *look);
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OCIO_ConstProcessorRcPtr *OCIO_configGetProcessorWithNames(OCIO_ConstConfigRcPtr *config,
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const char *srcName,
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const char *dstName);
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void OCIO_processorRelease(OCIO_ConstProcessorRcPtr *cpu_processor);
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OCIO_ConstCPUProcessorRcPtr *OCIO_processorGetCPUProcessor(OCIO_ConstProcessorRcPtr *processor);
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bool OCIO_cpuProcessorIsNoOp(OCIO_ConstCPUProcessorRcPtr *cpu_processor);
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void OCIO_cpuProcessorApply(OCIO_ConstCPUProcessorRcPtr *cpu_processor,
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struct OCIO_PackedImageDesc *img);
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void OCIO_cpuProcessorApply_predivide(OCIO_ConstCPUProcessorRcPtr *cpu_processor,
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struct OCIO_PackedImageDesc *img);
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void OCIO_cpuProcessorApplyRGB(OCIO_ConstCPUProcessorRcPtr *cpu_processor, float *pixel);
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void OCIO_cpuProcessorApplyRGBA(OCIO_ConstCPUProcessorRcPtr *cpu_processor, float *pixel);
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void OCIO_cpuProcessorApplyRGBA_predivide(OCIO_ConstCPUProcessorRcPtr *cpu_processor,
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float *pixel);
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void OCIO_cpuProcessorRelease(OCIO_ConstCPUProcessorRcPtr *processor);
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const char *OCIO_colorSpaceGetName(OCIO_ConstColorSpaceRcPtr *cs);
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const char *OCIO_colorSpaceGetDescription(OCIO_ConstColorSpaceRcPtr *cs);
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const char *OCIO_colorSpaceGetFamily(OCIO_ConstColorSpaceRcPtr *cs);
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int OCIO_colorSpaceGetNumAliases(OCIO_ConstColorSpaceRcPtr *cs);
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const char *OCIO_colorSpaceGetAlias(OCIO_ConstColorSpaceRcPtr *cs, const int index);
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OCIO_ConstProcessorRcPtr *OCIO_createDisplayProcessor(OCIO_ConstConfigRcPtr *config,
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const char *input,
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const char *view,
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const char *display,
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const char *look,
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const float scale,
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const float exponent,
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const bool inverse);
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struct OCIO_PackedImageDesc *OCIO_createOCIO_PackedImageDesc(float *data,
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long width,
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long height,
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long numChannels,
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long chanStrideBytes,
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long xStrideBytes,
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long yStrideBytes);
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void OCIO_PackedImageDescRelease(struct OCIO_PackedImageDesc *p);
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bool OCIO_supportGPUShader(void);
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bool OCIO_gpuDisplayShaderBind(OCIO_ConstConfigRcPtr *config,
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const char *input,
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const char *view,
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const char *display,
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const char *look,
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OCIO_CurveMappingSettings *curve_mapping_settings,
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const float scale,
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const float exponent,
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const float dither,
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const bool use_predivide,
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const bool use_overlay,
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const bool use_hdr);
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void OCIO_gpuDisplayShaderUnbind(void);
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void OCIO_gpuCacheFree(void);
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const char *OCIO_getVersionString(void);
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int OCIO_getVersionHex(void);
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#ifdef __cplusplus
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}
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#endif
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#endif /* OCIO_CAPI_H */
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