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-rw-r--r--src/drmgamma.c283
1 files changed, 0 insertions, 283 deletions
diff --git a/src/drmgamma.c b/src/drmgamma.c
deleted file mode 100644
index 8f3dd97..0000000
--- a/src/drmgamma.c
+++ /dev/null
@@ -1,283 +0,0 @@
-/**
- * crt-calibrator – Calibration utility for CRT monitors
- * Copyright © 2014 Mattias Andrée (maandree@member.fsf.org)
- *
- * 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 "drmgamma.h"
-
-#include <unistd.h>
-#include <errno.h>
-#include <stdio.h>
-#include <fcntl.h>
-#include <stdlib.h>
-#include <string.h>
-
-
-
-/**
- * The number of elements to allocates to a buffer for a DRM device pathname
- */
-#define DRM_DEV_NAME_MAX_LEN \
- ((sizeof(DRM_DEV_NAME) + sizeof(DRM_DIR_NAME)) / sizeof(char) + 3 * sizeof(int))
-
-
-
-/**
- * Figure out how many graphics cards there are on the system
- *
- * @return The number of graphics cards on the system
- */
-size_t drm_card_count(void)
-{
- char buf[DRM_DEV_NAME_MAX_LEN];
- size_t count = 0;
-
- for (;; count++)
- {
- sprintf(buf, DRM_DEV_NAME, DRM_DIR_NAME, (int)count);
- if (access(buf, F_OK) < 0)
- return count;
- }
-}
-
-/**
- * Acquire access to a graphics card
- *
- * @param index The index of the graphics card
- * @param card Graphics card information to fill in
- * @return Zero on success, -1 on error
- */
-int drm_card_open(size_t index, drm_card_t* restrict card)
-{
- char buf[DRM_DEV_NAME_MAX_LEN];
- int old_errno;
- size_t i, n;
-
- card->fd = -1;
- card->res = NULL;
- card->connectors = NULL;
- card->encoders = NULL;
- card->connector_count = 0;
-
- sprintf(buf, DRM_DEV_NAME, DRM_DIR_NAME, (int)index);
- card->fd = open(buf, O_RDWR);
- if (card->fd == -1)
- goto fail;
-
- card->res = drmModeGetResources(card->fd);
- if (card->res == NULL)
- goto fail;
-
- card->crtc_count = (size_t)(card->res->count_crtcs);
- card->connector_count = (size_t)(card->res->count_connectors);
- n = card->connector_count;
-
- card->connectors = calloc(n, sizeof(drmModeConnector*));
- if (card->connectors == NULL)
- goto fail;
- card->encoders = calloc(n, sizeof(drmModeEncoder*));
- if (card->encoders == NULL)
- goto fail;
-
- for (i = 0; i < n; i++)
- {
- card->connectors[i] = drmModeGetConnector(card->fd, card->res->connectors[i]);
- if (card->connectors[i] == NULL)
- goto fail;
-
- if (card->connectors[i]->encoder_id != 0)
- {
- card->encoders[i] = drmModeGetEncoder(card->fd, card->connectors[i]->encoder_id);
- if (card->encoders[i] == NULL)
- goto fail;
- }
- }
-
- return 0;
- fail:
- old_errno = errno;
- drm_card_close(card);
- errno = old_errno;
- return -1;
-}
-
-
-/**
- * Release access to a graphics card
- *
- * @param card The graphics card information
- */
-void drm_card_close(drm_card_t* restrict card)
-{
- size_t i, n = card->connector_count;
-
- if (card->encoders != NULL)
- for (i = 0; i < n; i++)
- if (card->encoders[i] != NULL)
- drmModeFreeEncoder(card->encoders[i]);
- free(card->encoders), card->encoders = NULL;
-
- if (card->connectors != NULL)
- for (i = 0; i < n; i++)
- if (card->connectors[i] != NULL)
- drmModeFreeConnector(card->connectors[i]);
- free(card->connectors), card->connectors = NULL;
-
- if (card->res != NULL)
- drmModeFreeResources(card->res), card->res = NULL;
- if (card->fd != -1)
- close(card->fd), card->fd = -1;
-}
-
-
-/**
- * Acquire access to a CRT controller
- *
- * @param index The index of the CRT controller
- * @param card The graphics card information
- * @param crtc CRT controller information to fill in
- * @return Zero on success, -1 on error
- */
-int drm_crtc_open(size_t index, drm_card_t* restrict card, drm_crtc_t* restrict crtc)
-{
- drmModePropertyRes* restrict prop;
- drmModePropertyBlobRes* restrict blob;
- drmModeCrtc* restrict info;
- size_t i;
- int old_errno;
-
- crtc->edid = NULL;
- crtc->red = NULL;
- crtc->green = NULL;
- crtc->blue = NULL;
-
- crtc->id = card->res->crtcs[index];
- crtc->card = card;
-
- crtc->connector = NULL;
- crtc->encoder = NULL;
- for (i = 0; i < card->connector_count; i++)
- if (card->encoders[i] != NULL)
- if (card->encoders[i]->crtc_id == crtc->id)
- {
- crtc->connector = card->connectors[i];
- crtc->encoder = card->encoders[i];
- }
-
- crtc->connected = (crtc->connector != NULL) && (crtc->connector->connection == DRM_MODE_CONNECTED);
-
- info = drmModeGetCrtc(card->fd, crtc->id);
- if (info == NULL)
- return -1;
- crtc->gamma_stops = (size_t)(info->gamma_size);
- drmModeFreeCrtc(info);
-
- /* `calloc` is for some reason required when reading the gamma ramps. */
- crtc->red = calloc(3 * crtc->gamma_stops, sizeof(uint16_t));
- if (crtc->red == NULL)
- return -1;
- crtc->green = crtc->red + crtc->gamma_stops;
- crtc->blue = crtc->green + crtc->gamma_stops;
-
- if (crtc->connector == NULL)
- return 0;
- for (i = 0; i < (size_t)(crtc->connector->count_props); i++)
- {
- size_t j;
-
- prop = drmModeGetProperty(card->fd, crtc->connector->props[i]);
- if (prop == NULL)
- continue;
-
- if (strcmp(prop->name, "EDID"))
- goto free_prop;
-
-
- blob = drmModeGetPropertyBlob(card->fd, (uint32_t)(crtc->connector->prop_values[i]));
- i = (size_t)(crtc->connector->count_props);
- if ((blob == NULL) || (blob->data == NULL))
- goto free_blob;
-
- crtc->edid = malloc((blob->length * 2 + 1) * sizeof(char));
- if (crtc->edid == NULL)
- {
- old_errno = errno;
- drmModeFreePropertyBlob(blob);
- drmModeFreeProperty(prop);
- free(crtc->red), crtc->red = NULL;
- errno = old_errno;
- return -1;
- }
- for (j = 0; j < blob->length; j++)
- {
- unsigned char c = ((unsigned char*)(blob->data))[j];
- crtc->edid[j * 2 + 0] = "0123456789ABCDEF"[(c >> 4) & 15];
- crtc->edid[j * 2 + 1] = "0123456789ABCDEF"[(c >> 0) & 15];
- }
- crtc->edid[blob->length * 2] = '\0';
-
- free_blob:
- if (blob != NULL)
- drmModeFreePropertyBlob(blob);
-
- free_prop:
- drmModeFreeProperty(prop);
- }
-
- return 0;
-}
-
-
-/**
- * Release access to a CRT controller
- *
- * @param crtc The CRT controller information to fill in
- */
-void drm_crtc_close(drm_crtc_t* restrict crtc)
-{
- free(crtc->edid), crtc->edid = NULL;
- free(crtc->red), crtc->red = NULL;
-}
-
-
-/**
- * Read the gamma ramps for a CRT controller
- *
- * @param crtc CRT controller information
- * @return Zero on success, -1 on error
- */
-int drm_get_gamma(drm_crtc_t* restrict crtc)
-{
- int r;
- r = drmModeCrtcGetGamma(crtc->card->fd, crtc->id, (uint32_t)(crtc->gamma_stops),
- crtc->red, crtc->green, crtc->blue);
- return -!!r;
-}
-
-
-/**
- * Apply gamma ramps for a CRT controller
- *
- * @param crtc CRT controller information
- * @return Zero on success, -1 on error
- */
-int drm_set_gamma(drm_crtc_t* restrict crtc)
-{
- int r;
- r = drmModeCrtcSetGamma(crtc->card->fd, crtc->id, (uint32_t)(crtc->gamma_stops),
- crtc->red, crtc->green, crtc->blue);
- return -!!r;
-}
-
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-09-19 15:54:05 +0000