blob: d1e5b18298e75d08e252cf0aee849a72a7d16735 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
|
/* See LICENSE file for copyright and license details. */
#include "common.h"
/**
* Concatenation of all ramps
*/
#define ALL red
/**
* Preform installation in an `for (i = 0; i < n; i++)`
* loop and do a `break` afterwords
*/
#define TRANSLATE(instruction) for (i = 0; i < n; i++) instruction; break
/**
* Undo the actions of `libgamma_internal_translate_to_64`
*
* @param depth The depth of the gamma ramp, `-1` for `float`, `-2` for `double`
* @param n The grand size of gamma ramps (sum of all channels' sizes)
* @param out Output gamma ramps
* @param in Input array, may be modified
*/
void
libgamma_internal_translate_from_64(signed depth, size_t n, union gamma_ramps_any *restrict out, const uint64_t *restrict in)
{
size_t i;
switch (depth) {
/* Translate integer */
case 8: TRANSLATE(out->bits8. ALL[i] = (uint8_t)(in[i] / UINT64_C(0x0101010101010101)));
case 16: TRANSLATE(out->bits16.ALL[i] = (uint16_t)(in[i] / UINT64_C(0x0001000100010001)));
case 32: TRANSLATE(out->bits32.ALL[i] = (uint32_t)(in[i] / UINT64_C(0x0000000100000001)));
/* Identity translation */
case 64: TRANSLATE(out->bits64.ALL[i] = in[i]);
/* Translate floating point */
case -1: TRANSLATE(out->float_single.ALL[i] = (float)in[i] / (float)UINT64_MAX);
case -2: TRANSLATE(out->float_double.ALL[i] = (double)in[i] / (double)UINT64_MAX);
default:
/* This is not possible */
abort();
break;
}
}
|
