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#include "../include/utils.h"
#include "../include/egl.h"
#include <time.h>
#include <string.h>
#include <stdio.h>
#include <unistd.h>
#include <xf86drmMode.h>
#include <fcntl.h>
double clock_get_monotonic_seconds(void) {
struct timespec ts;
ts.tv_sec = 0;
ts.tv_nsec = 0;
clock_gettime(CLOCK_MONOTONIC, &ts);
return (double)ts.tv_sec + (double)ts.tv_nsec * 0.000000001;
}
static const XRRModeInfo* get_mode_info(const XRRScreenResources *sr, RRMode id) {
for(int i = 0; i < sr->nmode; ++i) {
if(sr->modes[i].id == id)
return &sr->modes[i];
}
return NULL;
}
void for_each_active_monitor_output(Display *display, active_monitor_callback callback, void *userdata) {
XRRScreenResources *screen_res = XRRGetScreenResources(display, DefaultRootWindow(display));
if(!screen_res)
return;
for(int i = 0; i < screen_res->noutput; ++i) {
XRROutputInfo *out_info = XRRGetOutputInfo(display, screen_res, screen_res->outputs[i]);
if(out_info && out_info->crtc && out_info->connection == RR_Connected) {
XRRCrtcInfo *crt_info = XRRGetCrtcInfo(display, screen_res, out_info->crtc);
if(crt_info && crt_info->mode) {
const XRRModeInfo *mode_info = get_mode_info(screen_res, crt_info->mode);
if(mode_info)
callback(out_info, crt_info, mode_info, userdata);
}
if(crt_info)
XRRFreeCrtcInfo(crt_info);
}
if(out_info)
XRRFreeOutputInfo(out_info);
}
XRRFreeScreenResources(screen_res);
}
static void get_monitor_by_name_callback(const XRROutputInfo *output_info, const XRRCrtcInfo *crt_info, const XRRModeInfo *mode_info, void *userdata) {
(void)mode_info;
get_monitor_by_name_userdata *data = (get_monitor_by_name_userdata*)userdata;
if(!data->found_monitor && data->name_len == output_info->nameLen && memcmp(data->name, output_info->name, data->name_len) == 0) {
data->monitor->pos = (vec2i){ .x = crt_info->x, .y = crt_info->y };
data->monitor->size = (vec2i){ .x = (int)crt_info->width, .y = (int)crt_info->height };
data->found_monitor = true;
}
}
bool get_monitor_by_name(Display *display, const char *name, gsr_monitor *monitor) {
get_monitor_by_name_userdata userdata;
userdata.name = name;
userdata.name_len = strlen(name);
userdata.monitor = monitor;
userdata.found_monitor = false;
for_each_active_monitor_output(display, get_monitor_by_name_callback, &userdata);
return userdata.found_monitor;
}
bool gl_get_gpu_info(Display *dpy, gsr_gpu_info *info) {
gsr_egl gl;
if(!gsr_egl_load(&gl, dpy)) {
fprintf(stderr, "gsr error: failed to load opengl\n");
return false;
}
bool supported = true;
const unsigned char *gl_vendor = gl.glGetString(GL_VENDOR);
const unsigned char *gl_renderer = gl.glGetString(GL_RENDERER);
info->gpu_version = 0;
if(!gl_vendor) {
fprintf(stderr, "gsr error: failed to get gpu vendor\n");
supported = false;
goto end;
}
if(strstr((const char*)gl_vendor, "AMD"))
info->vendor = GSR_GPU_VENDOR_AMD;
else if(strstr((const char*)gl_vendor, "Intel"))
info->vendor = GSR_GPU_VENDOR_INTEL;
else if(strstr((const char*)gl_vendor, "NVIDIA"))
info->vendor = GSR_GPU_VENDOR_NVIDIA;
else {
fprintf(stderr, "gsr error: unknown gpu vendor: %s\n", gl_vendor);
supported = false;
goto end;
}
if(gl_renderer) {
if(info->vendor == GSR_GPU_VENDOR_NVIDIA)
sscanf((const char*)gl_renderer, "%*s %*s %*s %d", &info->gpu_version);
}
end:
gsr_egl_unload(&gl);
return supported;
}
bool gsr_get_valid_card_path(char *output) {
for(int i = 0; i < 10; ++i) {
sprintf(output, "/dev/dri/card%d", i);
int fd = open(output, O_RDONLY);
if(fd == -1)
continue;
bool is_display_card = false;
drmModeResPtr resources = drmModeGetResources(fd);
if(resources) {
is_display_card = true;
drmModeFreeResources(resources);
}
close(fd);
if(is_display_card)
return true;
}
return false;
}
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