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-rw-r--r--src/gamma-helper.c258
1 files changed, 0 insertions, 258 deletions
diff --git a/src/gamma-helper.c b/src/gamma-helper.c
deleted file mode 100644
index dd4e027..0000000
--- a/src/gamma-helper.c
+++ /dev/null
@@ -1,258 +0,0 @@
-/**
- * libgamma — Display server abstraction layer for gamma ramp adjustments
- * Copyright © 2014 Mattias Andrée (maandree@member.fsf.org)
- *
- * This library 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 library 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 library. If not, see <http://www.gnu.org/licenses/>.
- */
-#include "gamma-helper.h"
-
-#include "libgamma-method.h"
-#include "libgamma-error.h"
-
-#include <errno.h>
-#include <stdlib.h>
-#include <stdint.h>
-
-
-#define ANY bits64
-
-
-/**
- * Convert any set of gamma ramps into a 64-bit integer array with all channels.
- *
- * @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 array.
- * @param in Input gamma ramps.
- */
-static void translate_to_64(signed depth, size_t n, uint64_t* restrict out, libgamma_gamma_ramps_any_t in)
-{
- size_t i;
- switch (depth)
- {
- case 16:
- for (i = 0; i < n; i++)
- out[i] = (uint64_t)(in.bits16.red[i]) * 0x0001000100010001ULL;
- break;
-
- case 32:
- for (i = 0; i < n; i++)
- out[i] = (uint64_t)(in.bits32.red[i]) * 0x0000000100000001ULL;
- break;
-
- case 64:
- for (i = 0; i < n; i++)
- out[i] = in.bits64.red[i];
- break;
-
- case -1:
- for (i = 0; i < n; i++)
- out[i] = (uint64_t)(in.float_single.red[i] * (float)UINT64_MAX);
- break;
-
- case -2:
- for (i = 0; i < n; i++)
- out[i] = (uint64_t)(in.float_double.red[i] * (double)UINT64_MAX);
- break;
-
- default: /* This is not possible. */
- abort();
- break;
- }
-}
-
-
-/**
- * Undo the actions of `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.
- */
-static void translate_from_64(signed depth, size_t n, libgamma_gamma_ramps_any_t out, uint64_t* restrict in)
-{
- size_t i;
-
- switch (depth)
- {
- case 16:
- for (i = 0; i < n; i++)
- out.bits16.red[i] = (uint16_t)(in[i] / 0x0001000100010001ULL);
- break;
-
- case 32:
- for (i = 0; i < n; i++)
- out.bits32.red[i] = (uint32_t)(in[i] / 0x0000000100000001ULL);
- break;
-
- case 64:
- for (i = 0; i < n; i++)
- out.bits64.red[i] = in[i];
- break;
-
- case -1:
- for (i = 0; i < n; i++)
- out.float_single.red[i] = (float)(in[i]) / (float)UINT64_MAX;
- break;
-
- case -2:
- for (i = 0; i < n; i++)
- out.float_double.red[i] = (double)(in[i]) / (double)UINT64_MAX;
- break;
-
- default: /* This is not possible. */
- abort();
- break;
- }
-}
-
-
-/**
- * Allocate and initalise a gamma ramp with any depth.
- *
- * @param ramps_sys Output gamma ramps.
- * @param ramps The gamma ramps whose sizes should be duplicated.
- * @param depth The depth of the gamma ramps to allocate,
- * `-1` for `float`, `-2` for `double`.
- * @param elements Output reference for the grand size of the gamma ramps.
- * @return Zero on success, otherwise (negative) the value of an
- * error identifier provided by this library.
- */
-static int allocated_any_ramp(libgamma_gamma_ramps_any_t* restrict ramps_sys,
- libgamma_gamma_ramps_any_t ramps, signed depth, size_t* restrict elements)
-{
- size_t n = 0;
- size_t d;
-
- switch (depth)
- {
- case 16: d = sizeof(uint16_t); break;
- case 32: d = sizeof(uint32_t); break;
- case 64: d = sizeof(uint64_t); break;
- case -1: d = sizeof(float); break;
- case -2: d = sizeof(double); break;
- default:
- return errno = EINVAL, LIBGAMMA_ERRNO_SET;
- }
-
- n += ramps_sys->ANY. red_size = ramps.ANY. red_size;
- n += ramps_sys->ANY.green_size = ramps.ANY.green_size;
- n += ramps_sys->ANY. blue_size = ramps.ANY. blue_size;
-
- ramps_sys->ANY.red = malloc(n * d);
- ramps_sys->ANY.green = (void*)(((char*)(ramps_sys->ANY. red)) + ramps.ANY. red_size * d / sizeof(char));
- ramps_sys->ANY.blue = (void*)(((char*)(ramps_sys->ANY.green)) + ramps.ANY.green_size * d / sizeof(char));
-
- *elements = n;
- return ramps_sys->ANY.red ? 0 : LIBGAMMA_ERRNO_SET;
-}
-
-
-/**
- * Get current the 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_translated_ramp_get_(libgamma_crtc_state_t* restrict this,
- libgamma_gamma_ramps_any_t* restrict ramps,
- signed depth_user, signed depth_system,
- libgamma_get_ramps_any_fun* fun)
-{
- size_t n;
- int r;
- libgamma_gamma_ramps_any_t ramps_sys;
- uint64_t* restrict ramps_full;
-
- if ((r = allocated_any_ramp(&ramps_sys, *ramps, depth_system, &n)))
- return r;
-
- if ((r = fun(this, &ramps_sys)))
- {
- free(ramps_sys.ANY.red);
- return r;
- }
-
- if ((ramps_full = malloc(n * sizeof(uint64_t))) == NULL)
- {
- free(ramps_sys.ANY.red);
- return LIBGAMMA_ERRNO_SET;
- }
-
- translate_to_64(depth_system, n, ramps_full, ramps_sys);
- free(ramps_sys.ANY.red);
-
- translate_from_64(depth_user, n, *ramps, ramps_full);
- free(ramps_full);
- return 0;
-}
-
-
-/**
- * Set the gamma ramps for a CRTC, re-encoding version.
- *
- * @param this The CRTC state.
- * @param ramps The gamma ramps to apply.
- * @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 write 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_translated_ramp_set_(libgamma_crtc_state_t* restrict this,
- libgamma_gamma_ramps_any_t ramps,
- signed depth_user, signed depth_system,
- libgamma_set_ramps_any_fun* fun)
-{
- size_t n;
- int r;
- libgamma_gamma_ramps_any_t ramps_sys;
- uint64_t* restrict ramps_full;
-
- if ((r = allocated_any_ramp(&ramps_sys, ramps, depth_system, &n)))
- return r;
-
- if ((ramps_full = malloc(n * sizeof(uint64_t))) == NULL)
- {
- free(ramps_sys.ANY.red);
- return LIBGAMMA_ERRNO_SET;
- }
-
- translate_to_64(depth_user, n, ramps_full, ramps);
- translate_from_64(depth_system, n, ramps_sys, ramps_full);
- free(ramps_full);
-
- r = fun(this, ramps_sys);
-
- free(ramps_sys.ANY.red);
- return r;
-}
-
-
-#undef ANY
-
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