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-rw-r--r--src/gamma-drm.c256
1 files changed, 10 insertions, 246 deletions
diff --git a/src/gamma-drm.c b/src/gamma-drm.c
index 1713024..f5aef31 100644
--- a/src/gamma-drm.c
+++ b/src/gamma-drm.c
@@ -19,196 +19,11 @@
*/
#include "common.h"
-#include <xf86drm.h>
-#include <xf86drmMode.h>
-
-#ifndef O_CLOEXEC
-# define O_CLOEXEC 02000000
-#endif
-
-
-struct drm_crtc_state {
- int crtc_num;
- int crtc_id;
- int gamma_size;
- uint16_t *r_gamma;
- uint16_t *g_gamma;
- uint16_t *b_gamma;
-};
-
-
-struct gamma_state {
- int card_num;
- int crtc_num;
- int fd;
- drmModeRes *res;
- struct drm_crtc_state *crtcs;
-};
-
static int
drm_create(struct gamma_state **state_out)
{
- struct gamma_state *state;
- state = *state_out = emalloc(sizeof(**state_out));
- state->card_num = 0;
- state->crtc_num = -1;
- state->fd = -1;
- state->res = NULL;
- state->crtcs = NULL;
- return 0;
-}
-
-
-static int
-drm_start(struct gamma_state *state)
-{
- /* Acquire access to a graphics card. */
- char pathname[sizeof(DRM_DIR_NAME"")-1U + sizeof(DRM_DEV_NAME"")-1U + 3U * sizeof(int) + 2U];
- int crtc_count;
- struct drm_crtc_state *crtcs;
-
- sprintf(pathname, DRM_DEV_NAME, DRM_DIR_NAME, state->card_num);
-
- state->fd = open(pathname, O_RDWR | O_CLOEXEC);
- if (state->fd < 0) {
- /* TODO check if access permissions, normally root or membership of the video group is required. */
- weprintf(_("Failed to open DRM device `%s': %s."), pathname, strerror(errno));
- return -1;
- }
-
- /* Acquire mode resources. */
- state->res = drmModeGetResources(state->fd);
- if (state->res == NULL) {
- weprintf(_("Failed to get DRM mode resources."));
- close(state->fd);
- state->fd = -1;
- return -1;
- }
-
- /* Create entries for selected CRTCs. */
- crtc_count = state->res->count_crtcs;
- if (state->crtc_num >= 0) {
- if (state->crtc_num >= crtc_count) {
- if (crtc_count > 1)
- weprintf(_("CRTC %i does not exist, valid CRTCs are [0, %i]."), state->crtc_num, crtc_count-1);
- else
- weprintf(_("CRTC %i does not exist, only CRTC 0 exists."), state->crtc_num);
- close(state->fd);
- state->fd = -1;
- drmModeFreeResources(state->res);
- state->res = NULL;
- return -1;
- }
-
- state->crtcs = malloc(2 * sizeof(struct drm_crtc_state));
- state->crtcs[1].crtc_num = -1;
-
- state->crtcs->crtc_num = state->crtc_num;
- state->crtcs->crtc_id = -1;
- state->crtcs->gamma_size = -1;
- state->crtcs->r_gamma = NULL;
- state->crtcs->g_gamma = NULL;
- state->crtcs->b_gamma = NULL;
- } else {
- int crtc_num;
- state->crtcs = malloc((crtc_count + 1) * sizeof(struct drm_crtc_state));
- state->crtcs[crtc_count].crtc_num = -1;
- for (crtc_num = 0; crtc_num < crtc_count; crtc_num++) {
- state->crtcs[crtc_num].crtc_num = crtc_num;
- state->crtcs[crtc_num].crtc_id = -1;
- state->crtcs[crtc_num].gamma_size = -1;
- state->crtcs[crtc_num].r_gamma = NULL;
- state->crtcs[crtc_num].g_gamma = NULL;
- state->crtcs[crtc_num].b_gamma = NULL;
- }
- }
-
- /* Load CRTC information and gamma ramps. */
- crtcs = state->crtcs;
- for (; crtcs->crtc_num >= 0; crtcs++) {
- drmModeCrtc *crtc_info;
- crtcs->crtc_id = state->res->crtcs[crtcs->crtc_num];
- crtc_info = drmModeGetCrtc(state->fd, crtcs->crtc_id);
- if (crtc_info == NULL) {
- weprintf(_("CRTC %i lost, skipping"), crtcs->crtc_num);
- continue;
- }
- crtcs->gamma_size = crtc_info->gamma_size;
- drmModeFreeCrtc(crtc_info);
- if (crtcs->gamma_size <= 1) {
- weprintf(_("Could not get gamma ramp size for CRTC %i on graphics card"
- " %i, ignoring device."), crtcs->crtc_num, state->card_num);
- continue;
- }
- /* Valgrind complains about us reading uninitialize memory if we just use malloc. */
- crtcs->r_gamma = calloc(3 * crtcs->gamma_size, sizeof(uint16_t));
- crtcs->g_gamma = crtcs->r_gamma + crtcs->gamma_size;
- crtcs->b_gamma = crtcs->g_gamma + crtcs->gamma_size;
- if (crtcs->r_gamma) {
- int r = drmModeCrtcGetGamma(state->fd, crtcs->crtc_id, crtcs->gamma_size,
- crtcs->r_gamma, crtcs->g_gamma, crtcs->b_gamma);
- if (r < 0) {
- weprintf(_("DRM could not read gamma ramps on CRTC %i on graphics card"
- " %i, ignoring device."), crtcs->crtc_num, state->card_num);
- free(crtcs->r_gamma);
- crtcs->r_gamma = NULL;
- }
- } else {
- weprintf("malloc:");
- drmModeFreeResources(state->res);
- state->res = NULL;
- close(state->fd);
- state->fd = -1;
- while (crtcs-- != state->crtcs)
- free(crtcs->r_gamma);
- free(state->crtcs);
- state->crtcs = NULL;
- return -1;
- }
- }
-
- return 0;
-}
-
-
-static void
-drm_restore(struct gamma_state *state)
-{
- struct drm_crtc_state *crtcs = state->crtcs;
- while (crtcs->crtc_num >= 0) {
- if (crtcs->r_gamma) {
- drmModeCrtcSetGamma(state->fd, crtcs->crtc_id, crtcs->gamma_size,
- crtcs->r_gamma, crtcs->g_gamma, crtcs->b_gamma);
- }
- crtcs++;
- }
-}
-
-
-static void
-drm_free(struct gamma_state *state)
-{
- if (state->crtcs) {
- struct drm_crtc_state *crtcs = state->crtcs;
- while (crtcs->crtc_num >= 0) {
- free(crtcs->r_gamma);
- crtcs->crtc_num = -1;
- crtcs++;
- }
- free(state->crtcs);
- state->crtcs = NULL;
- }
- if (state->res) {
- drmModeFreeResources(state->res);
- state->res = NULL;
- }
- if (state->fd >= 0) {
- close(state->fd);
- state->fd = -1;
- }
-
- free(state);
+ return direct_create(state_out, LIBGAMMA_METHOD_LINUX_DRM, "drm");
}
@@ -218,10 +33,9 @@ drm_print_help(FILE *f)
fputs(_("Adjust gamma ramps with Direct Rendering Manager.\n"), f);
fputs("\n", f);
- /* TRANSLATORS: DRM help output
- left column must not be translated */
- fputs(_(" card=N\tGraphics card to apply adjustments to\n"
- " crtc=N\tCRTC to apply adjustments to\n"), f); /* TODO list is not supported */
+ /* TRANSLATORS: DRM help output left column must not be translated */
+ fputs(_(" card=N Graphics card to apply adjustments to\n"), f);
+ fputs(_(" crtc=N List of comma-separated CRTCs to apply adjustments to\n"), f);
fputs("\n", f);
}
@@ -230,68 +44,18 @@ static int
drm_set_option(struct gamma_state *state, const char *key, const char *value)
{
if (!strcasecmp(key, "card")) {
- state->card_num = atoi(value);
+ return direct_set_partitions(state, key, value);
} else if (!strcasecmp(key, "crtc")) {
- if (!strcasecmp(value, "all")) {
- state->crtc_num = -1;
- } else {
- state->crtc_num = atoi(value);
- if (state->crtc_num < 0) {
- weprintf(_("CRTC must be a non-negative integer"));
- return -1;
- }
- }
+ return direct_set_crtcs(state, key, value);
} else {
weprintf(_("Unknown method parameter: `%s'."), key);
return -1;
}
-
- return 0;
-}
-
-
-static int
-drm_apply(struct gamma_state *state, const struct colour_setting *setting, int preserve)
-{
- struct drm_crtc_state *crtcs = state->crtcs;
- uint32_t last_gamma_size = 0;
- uint16_t *r_gamma = NULL;
- uint16_t *g_gamma = NULL;
- uint16_t *b_gamma = NULL;
- uint16_t value;
- uint32_t i, ramp_size;
-
- (void) preserve; /* TODO */
-
- for (; crtcs->crtc_num >= 0; crtcs++) {
- if (crtcs->gamma_size <= 1)
- continue;
- if (crtcs->gamma_size != last_gamma_size) {
- if (crtcs->gamma_size > last_gamma_size) {
- r_gamma = erealloc(r_gamma, 3 * crtcs->gamma_size * sizeof(uint16_t));
- g_gamma = r_gamma + crtcs->gamma_size;
- b_gamma = g_gamma + crtcs->gamma_size;
- }
- last_gamma_size = crtcs->gamma_size;
- }
-
- /* Initialize gamma ramps to pure state */
- ramp_size = crtcs->gamma_size;
- for (i = 0; i < ramp_size; i++) {
- value = (uint16_t)((double)i / (ramp_size - 1) * UINT16_MAX);
- r_gamma[i] = value;
- g_gamma[i] = value;
- b_gamma[i] = value;
- }
-
- fill_ramps_u16(r_gamma, g_gamma, b_gamma, crtcs->gamma_size, crtcs->gamma_size, crtcs->gamma_size, setting);
- drmModeCrtcSetGamma(state->fd, crtcs->crtc_id, crtcs->gamma_size, r_gamma, g_gamma, b_gamma);
- }
-
- free(r_gamma);
-
- return 0;
}
+#define drm_start direct_start
+#define drm_apply direct_apply
+#define drm_restore direct_restore
+#define drm_free direct_free
const struct gamma_method drm_gamma_method = GAMMA_METHOD_INIT("drm", 0, 0, drm);
generated by cgit v1.2.3-70-g09d2 (git 2.48.0) at 2025-04-03 14:57:05 +0000