mirror of
https://github.com/quelsolaar/HxA
synced 2025-02-01 09:58:42 -05:00
149 lines
3.6 KiB
C
149 lines
3.6 KiB
C
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/* This is an implementation of The Academy Color Encoding Sytem (ACES) https://acescentral.com/,
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a sub sextion of OpenEXR a file format for storing Hight Dynamic Range images. It writen with
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the intenetion of creating a Free, small, safe, C89, reference implementation. You are free to use it
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for what ever you want but if you do, consider sending an E-mail to eskil@quelsolaar.com and let
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me know if you find it useful as it will surly make my day.*/
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typedef enum{
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ACES_ATTRIBUTE_TYPE_BOX2I,
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ACES_ATTRIBUTE_TYPE_CHLIST,
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ACES_ATTRIBUTE_TYPE_CHROMATICITIES,
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ACES_ATTRIBUTE_TYPE_COMPRESSION,
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ACES_ATTRIBUTE_TYPE_DOUBLE,
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ACES_ATTRIBUTE_TYPE_FLOAT,
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ACES_ATTRIBUTE_TYPE_HALF,
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ACES_ATTRIBUTE_TYPE_INT,
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ACES_ATTRIBUTE_TYPE_LINEORDER,
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ACES_ATTRIBUTE_TYPE_KEYCODE,
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ACES_ATTRIBUTE_TYPE_RATIONAL,
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ACES_ATTRIBUTE_TYPE_SHORT,
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ACES_ATTRIBUTE_TYPE_STRING,
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ACES_ATTRIBUTE_TYPE_STRINGVECTOR,
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ACES_ATTRIBUTE_TYPE_TIMECODE,
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ACES_ATTRIBUTE_TYPE_UNSIGNEDCHAR,
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ACES_ATTRIBUTE_TYPE_UNSIGNEDINT,
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ACES_ATTRIBUTE_TYPE_UNSIGNEDLONG,
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ACES_ATTRIBUTE_TYPE_UNSIGNEDSHORT,
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ACES_ATTRIBUTE_TYPE_V2F,
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ACES_ATTRIBUTE_TYPE_V3F,
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ACES_ATTRIBUTE_TYPE_COUNT,
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ACES_ATTRIBUTE_TYPE_UNKNOWN = ACES_ATTRIBUTE_TYPE_COUNT,
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ACES_ATTRIBUTE_TYPE_UNUSED
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}ACESAttributeTypes;
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typedef enum{
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ACES_ACPT_UINT32 = 0,
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ACES_ACPT_HALF16 = 1,
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ACES_ACPT_FLOAT32 = 2,
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}ACESAttributeClistPixelType;
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typedef struct{
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char name[256];
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ACESAttributeClistPixelType pixelType;
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unsigned int pLinear;
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int xSampling;
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int ySampling;
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}ACESAttributeClist;
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typedef struct{
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ACESAttributeTypes type;
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char name[256];
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union{
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struct{
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int x_min;
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int y_min;
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int x_max;
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int y_max;
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}box2i;
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struct{
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unsigned int length;
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ACESAttributeClist *list;
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}chlist;
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struct{
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float redX;
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float redY;
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float greenX;
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float greenY;
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float blueX;
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float blueY;
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float whiteX;
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float whiteY;
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}chromaticities;
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unsigned char compression;
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double type_double;
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float type_float;
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unsigned short type_half;
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unsigned int type_int;
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unsigned char lineOrder;
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struct{
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int filmMfCCode;
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int filmType;
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int prefix;
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int count;
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int perfOffset;
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int perfsPerFrame;
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int perfsPerCount;
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}keycode;
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struct{
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int n;
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unsigned int b;
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}rational;
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short type_short;
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struct{
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char *string;
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unsigned int length;
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}string;
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struct{
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char *string;
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unsigned int length;
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}stringVector;
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struct{
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unsigned int timeAndFlags;
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unsigned int userData;
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}timecode;
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unsigned char unsignedChar;
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unsigned int unsignedInt;
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unsigned long unsignedLong;
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unsigned short unsignedShort;
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float v2f[2];
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float v3f[3];
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struct{
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char *type_name;
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unsigned int length;
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void *data;
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}unknown;
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}data;
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}ACESAttributeType;
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typedef struct{
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char name[256];
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unsigned int channel_count;
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ACESAttributeClistPixelType pixelType;
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union{
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unsigned int *integer_buffer;
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unsigned short *half_buffer;
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float *float_buffer;
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}pixels;
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}ACESLayer;
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typedef struct{
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ACESAttributeType *attributes;
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unsigned int attribute_count;
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unsigned int attribute_allocate;
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ACESLayer *layers;
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unsigned int layer_count;
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}ACESImage;
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typedef enum{
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ACES_TC_NO_NOT_CONVERT,
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ACES_TC_CONVERT_ALL_FLOAT16_TO_FLOAT32,
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ACES_TC_CONVERT_ALL_FLOAT32_TO_FLOAT16
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}ACESTypeConvesion;
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extern float aces_float16_to_float32(unsigned short value);
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extern short aces_float32_to_float16(float value);
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extern ACESImage *aces_load(char *file_path, int silent, ACESTypeConvesion conversion);
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extern void aces_free(ACESImage *image); |