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/* See LICENSE file for copyright and license details. */
#include "common.h"
/**
* Just an arbitrary version
*/
#define ANY bits64
/**
* Get the current gamma ramps for a CRTC, re-encoding version
*
* @param this The CRTC state
* @param ramps The gamma ramps to fill with the current values
* @param depth_user The depth of the gamma ramps that are provided by the user,
* `-1` for `float`, `-2` for `double`
* @param depth_system The depth of the gamma ramps as required by the adjustment method,
* `-1` for `float`, `-2` for `double`
* @param fun Function that is to be used read the ramps, its parameters have
* the same function as those of this function with the same names,
* and the return value too is identical
* @return Zero on success, otherwise (negative) the value of an
* error identifier provided by this library
*/
int
libgamma_internal_translated_ramp_get_(struct libgamma_crtc_state *restrict this, union gamma_ramps_any *restrict ramps,
signed depth_user, signed depth_system, get_ramps_any_fun *fun)
{
size_t n;
int r;
union gamma_ramps_any ramps_sys;
uint64_t *restrict ramps_full = NULL;
/* Allocate ramps with proper data type */
if ((r = libgamma_internal_allocated_any_ramp(&ramps_sys, ramps, depth_system, &n)))
return r;
/* Fill the ramps */
if ((r = fun(this, &ramps_sys))) {
free(ramps_sys.ANY.red);
return r;
}
/* Allocate intermediary ramps */
if (n) {
if (n > SIZE_MAX / sizeof(*ramps_full)) {
errno = ENOMEM;
free(ramps_sys.ANY.red);
return LIBGAMMA_ERRNO_SET;
}
ramps_full = malloc(n * sizeof(*ramps_full));
if (!ramps_full) {
free(ramps_sys.ANY.red);
return LIBGAMMA_ERRNO_SET;
}
}
/* Translate ramps to 64-bit integers */
libgamma_internal_translate_to_64(depth_system, n, ramps_full, &ramps_sys);
free(ramps_sys.ANY.red);
/* Translate ramps to the user's format */
libgamma_internal_translate_from_64(depth_user, n, ramps, ramps_full);
free(ramps_full);
return 0;
}
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