mirror of
https://github.com/hyprwm/wlroots-hyprland.git
synced 2024-11-29 16:05:59 +01:00
278 lines
6.8 KiB
C
278 lines
6.8 KiB
C
#define _POSIX_C_SOURCE 200809L
|
|
#include <assert.h>
|
|
#include <drm_fourcc.h>
|
|
#include <drm_mode.h>
|
|
#include <drm.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <wlr/util/log.h>
|
|
#include "backend/drm/drm.h"
|
|
#include "backend/drm/util.h"
|
|
|
|
int32_t calculate_refresh_rate(const drmModeModeInfo *mode) {
|
|
int32_t refresh = (mode->clock * 1000000LL / mode->htotal +
|
|
mode->vtotal / 2) / mode->vtotal;
|
|
|
|
if (mode->flags & DRM_MODE_FLAG_INTERLACE) {
|
|
refresh *= 2;
|
|
}
|
|
|
|
if (mode->flags & DRM_MODE_FLAG_DBLSCAN) {
|
|
refresh /= 2;
|
|
}
|
|
|
|
if (mode->vscan > 1) {
|
|
refresh /= mode->vscan;
|
|
}
|
|
|
|
return refresh;
|
|
}
|
|
|
|
enum wlr_output_mode_aspect_ratio get_picture_aspect_ratio(const drmModeModeInfo *mode) {
|
|
switch (mode->flags & DRM_MODE_FLAG_PIC_AR_MASK) {
|
|
case DRM_MODE_FLAG_PIC_AR_NONE:
|
|
return WLR_OUTPUT_MODE_ASPECT_RATIO_NONE;
|
|
case DRM_MODE_FLAG_PIC_AR_4_3:
|
|
return WLR_OUTPUT_MODE_ASPECT_RATIO_4_3;
|
|
case DRM_MODE_FLAG_PIC_AR_16_9:
|
|
return WLR_OUTPUT_MODE_ASPECT_RATIO_16_9;
|
|
case DRM_MODE_FLAG_PIC_AR_64_27:
|
|
return WLR_OUTPUT_MODE_ASPECT_RATIO_64_27;
|
|
case DRM_MODE_FLAG_PIC_AR_256_135:
|
|
return WLR_OUTPUT_MODE_ASPECT_RATIO_256_135;
|
|
default:
|
|
wlr_log(WLR_ERROR, "Unknown mode picture aspect ratio: %u",
|
|
mode->flags & DRM_MODE_FLAG_PIC_AR_MASK);
|
|
return WLR_OUTPUT_MODE_ASPECT_RATIO_NONE;
|
|
}
|
|
}
|
|
|
|
/* See https://en.wikipedia.org/wiki/Extended_Display_Identification_Data for layout of EDID data.
|
|
* We don't parse the EDID properly. We just expect to receive valid data.
|
|
*/
|
|
void parse_edid(struct wlr_drm_connector *conn, size_t len, const uint8_t *data) {
|
|
struct wlr_output *output = &conn->output;
|
|
|
|
free(output->make);
|
|
free(output->model);
|
|
free(output->serial);
|
|
output->make = NULL;
|
|
output->model = NULL;
|
|
output->serial = NULL;
|
|
|
|
if (!data || len < 128) {
|
|
return;
|
|
}
|
|
|
|
uint16_t id = (data[8] << 8) | data[9];
|
|
const char *manu = get_pnp_manufacturer(id);
|
|
char pnp_id[4];
|
|
if (!manu) {
|
|
// The ASCII 3-letter manufacturer PnP ID is encoded in 5-bit codes
|
|
pnp_id[0] = ((id >> 10) & 0x1F) + '@';
|
|
pnp_id[1] = ((id >> 5) & 0x1F) + '@';
|
|
pnp_id[2] = ((id >> 0) & 0x1F) + '@';
|
|
pnp_id[3] = '\0';
|
|
manu = pnp_id;
|
|
}
|
|
output->make = strdup(manu);
|
|
|
|
uint16_t model = data[10] | (data[11] << 8);
|
|
char model_str[32];
|
|
snprintf(model_str, sizeof(model_str), "0x%04" PRIX16, model);
|
|
|
|
uint32_t serial = data[12] | (data[13] << 8) | (data[14] << 8) | (data[15] << 8);
|
|
char serial_str[32];
|
|
if (serial != 0) {
|
|
snprintf(serial_str, sizeof(serial_str), "0x%08" PRIX32, serial);
|
|
} else {
|
|
serial_str[0] = '\0';
|
|
}
|
|
|
|
for (size_t i = 72; i <= 108; i += 18) {
|
|
uint16_t flag = (data[i] << 8) | data[i + 1];
|
|
if (flag == 0 && data[i + 3] == 0xFC) {
|
|
snprintf(model_str, sizeof(model_str), "%.13s", &data[i + 5]);
|
|
|
|
// Monitor names are terminated by newline if they're too short
|
|
char *nl = strchr(model_str, '\n');
|
|
if (nl) {
|
|
*nl = '\0';
|
|
}
|
|
} else if (flag == 0 && data[i + 3] == 0xFF) {
|
|
snprintf(serial_str, sizeof(serial_str), "%.13s", &data[i + 5]);
|
|
|
|
// Monitor serial numbers are terminated by newline if they're too
|
|
// short
|
|
char* nl = strchr(serial_str, '\n');
|
|
|
|
if (nl) {
|
|
*nl = '\0';
|
|
}
|
|
}
|
|
}
|
|
|
|
output->model = strdup(model_str);
|
|
if (serial_str[0] != '\0') {
|
|
output->serial = strdup(serial_str);
|
|
}
|
|
}
|
|
|
|
const char *drm_connector_status_str(drmModeConnection status) {
|
|
switch (status) {
|
|
case DRM_MODE_CONNECTED:
|
|
return "connected";
|
|
case DRM_MODE_DISCONNECTED:
|
|
return "disconnected";
|
|
case DRM_MODE_UNKNOWNCONNECTION:
|
|
return "unknown";
|
|
}
|
|
return "<unsupported>";
|
|
}
|
|
|
|
static bool is_taken(size_t n, const uint32_t arr[static n], uint32_t key) {
|
|
for (size_t i = 0; i < n; ++i) {
|
|
if (arr[i] == key) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/*
|
|
* Store all of the non-recursive state in a struct, so we aren't literally
|
|
* passing 12 arguments to a function.
|
|
*/
|
|
struct match_state {
|
|
const size_t num_objs;
|
|
const uint32_t *restrict objs;
|
|
const size_t num_res;
|
|
size_t score;
|
|
size_t replaced;
|
|
uint32_t *restrict res;
|
|
uint32_t *restrict best;
|
|
const uint32_t *restrict orig;
|
|
bool exit_early;
|
|
};
|
|
|
|
/*
|
|
* skips: The number of SKIP elements encountered so far.
|
|
* score: The number of resources we've matched so far.
|
|
* replaced: The number of changes from the original solution.
|
|
* i: The index of the current element.
|
|
*
|
|
* This tries to match a solution as close to st->orig as it can.
|
|
*
|
|
* Returns whether we've set a new best element with this solution.
|
|
*/
|
|
static bool match_obj_(struct match_state *st, size_t skips, size_t score, size_t replaced, size_t i) {
|
|
// Finished
|
|
if (i >= st->num_res) {
|
|
if (score > st->score ||
|
|
(score == st->score && replaced < st->replaced)) {
|
|
st->score = score;
|
|
st->replaced = replaced;
|
|
memcpy(st->best, st->res, sizeof(st->best[0]) * st->num_res);
|
|
|
|
st->exit_early = (st->score == st->num_res - skips
|
|
|| st->score == st->num_objs)
|
|
&& st->replaced == 0;
|
|
|
|
return true;
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (st->orig[i] == SKIP) {
|
|
st->res[i] = SKIP;
|
|
return match_obj_(st, skips + 1, score, replaced, i + 1);
|
|
}
|
|
|
|
bool has_best = false;
|
|
|
|
/*
|
|
* Attempt to use the current solution first, to try and avoid
|
|
* recalculating everything
|
|
*/
|
|
if (st->orig[i] != UNMATCHED && !is_taken(i, st->res, st->orig[i])) {
|
|
st->res[i] = st->orig[i];
|
|
size_t obj_score = st->objs[st->res[i]] != 0 ? 1 : 0;
|
|
if (match_obj_(st, skips, score + obj_score, replaced, i + 1)) {
|
|
has_best = true;
|
|
}
|
|
}
|
|
if (st->orig[i] == UNMATCHED) {
|
|
st->res[i] = UNMATCHED;
|
|
if (match_obj_(st, skips, score, replaced, i + 1)) {
|
|
has_best = true;
|
|
}
|
|
}
|
|
if (st->exit_early) {
|
|
return true;
|
|
}
|
|
|
|
if (st->orig[i] != UNMATCHED) {
|
|
++replaced;
|
|
}
|
|
|
|
for (size_t candidate = 0; candidate < st->num_objs; ++candidate) {
|
|
// We tried this earlier
|
|
if (candidate == st->orig[i]) {
|
|
continue;
|
|
}
|
|
|
|
// Not compatible
|
|
if (!(st->objs[candidate] & (1 << i))) {
|
|
continue;
|
|
}
|
|
|
|
// Already taken
|
|
if (is_taken(i, st->res, candidate)) {
|
|
continue;
|
|
}
|
|
|
|
st->res[i] = candidate;
|
|
size_t obj_score = st->objs[candidate] != 0 ? 1 : 0;
|
|
if (match_obj_(st, skips, score + obj_score, replaced, i + 1)) {
|
|
has_best = true;
|
|
}
|
|
|
|
if (st->exit_early) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
if (has_best) {
|
|
return true;
|
|
}
|
|
|
|
// Maybe this resource can't be matched
|
|
st->res[i] = UNMATCHED;
|
|
return match_obj_(st, skips, score, replaced, i + 1);
|
|
}
|
|
|
|
size_t match_obj(size_t num_objs, const uint32_t objs[static restrict num_objs],
|
|
size_t num_res, const uint32_t res[static restrict num_res],
|
|
uint32_t out[static restrict num_res]) {
|
|
uint32_t solution[num_res];
|
|
for (size_t i = 0; i < num_res; ++i) {
|
|
solution[i] = UNMATCHED;
|
|
}
|
|
|
|
struct match_state st = {
|
|
.num_objs = num_objs,
|
|
.num_res = num_res,
|
|
.score = 0,
|
|
.replaced = SIZE_MAX,
|
|
.objs = objs,
|
|
.res = solution,
|
|
.best = out,
|
|
.orig = res,
|
|
.exit_early = false,
|
|
};
|
|
|
|
match_obj_(&st, 0, 0, 0, 0);
|
|
return st.score;
|
|
}
|