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/**
* coopgammad -- Cooperative gamma server
* Copyright (C) 2016 Mattias Andrée (maandree@kth.se)
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include <libgamma.h>
#ifndef GCC_ONLY
# if defined(__GNUC__) && !defined(__clang__)
# define GCC_ONLY(...) __VA_ARGS__
# else
# define GCC_ONLY(...) /* nothing */
# endif
#endif
/**
* Gamma ramps union for all
* lbigamma gamma ramps types
*/
union gamma_ramps
{
/**
* Ramps with 8-bit value
*/
libgamma_gamma_ramps8_t u8;
/**
* Ramps with 16-bit value
*/
libgamma_gamma_ramps16_t u16;
/**
* Ramps with 32-bit value
*/
libgamma_gamma_ramps32_t u32;
/**
* Ramps with 64-bit value
*/
libgamma_gamma_ramps64_t u64;
/**
* Ramps with `float` value
*/
libgamma_gamma_rampsf_t f;
/**
* Ramps with `double` value
*/
libgamma_gamma_rampsd_t d;
};
/**
* Marshal a ramp trio
*
* @param this The ramps
* @param buf Output buffer for the marshalled ramps,
* `NULL` just measure how large the buffers
* needs to be
* @param ramps_size The byte-size of ramps
* @return The number of marshalled byte
*/
GCC_ONLY(__attribute__((nonnull(1))))
size_t gamma_ramps_marshal(const union gamma_ramps* restrict this, void* restrict buf, size_t ramps_size);
/**
* Unmarshal a ramp trio
*
* @param this Output for the ramps
* @param buf Buffer with the marshalled ramps
* @param ramps_size The byte-size of ramps
* @return The number of unmarshalled bytes, 0 on error
*/
GCC_ONLY(__attribute__((nonnull)))
size_t gamma_ramps_unmarshal(union gamma_ramps* restrict this, const void* restrict buf, size_t ramps_size);
/**
* Apply a ramp-trio on top of another ramp-trio
*
* @param dest The output for the resulting ramp-trio, must be initialised
* @param application The red, green and blue ramps, as one single raw array,
* of the filter that should be applied
* @param depth -1: `float` stops
* -2: `double` stops
* Other: the number of bits of each (integral) stop
* @param base The CLUT on top of which the new filter should be applied,
* this can be the same pointer as `dest`
*/
GCC_ONLY(__attribute__((nonnull)))
void apply(union gamma_ramps* restrict dest, void* restrict application,
int depth, union gamma_ramps* restrict base);
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