wlroots/backend/drm/drm.c

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#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <inttypes.h>
#include <errno.h>
#include <xf86drm.h>
#include <xf86drmMode.h>
#include <drm_mode.h>
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <gbm.h>
#include <GLES3/gl3.h>
#include <wayland-server.h>
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#include <wlr/backend/interface.h>
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#include <wlr/interfaces/wlr_output.h>
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#include <wlr/util/log.h>
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#include "drm.h"
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#include "drm-util.h"
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bool wlr_drm_check_features(struct wlr_backend_state *drm) {
if (drmSetClientCap(drm->fd, DRM_CLIENT_CAP_UNIVERSAL_PLANES, 1)) {
wlr_log(L_INFO, "DRM universal planes unsupported");
return false;
}
if (drmSetClientCap(drm->fd, DRM_CLIENT_CAP_ATOMIC, 1)) {
wlr_log(L_INFO, "Atomic modesetting unsupported");
}
return true;
}
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static int cmp_plane(const void *arg1, const void *arg2)
{
const struct wlr_drm_plane *a = arg1;
const struct wlr_drm_plane *b = arg2;
return (int)a->type - (int)b->type;
}
static bool init_planes(struct wlr_backend_state *drm)
{
drmModePlaneRes *plane_res = drmModeGetPlaneResources(drm->fd);
if (!plane_res) {
wlr_log_errno(L_ERROR, "Failed to get DRM plane resources");
return false;
}
wlr_log(L_INFO, "Found %"PRIu32" DRM planes", plane_res->count_planes);
if (plane_res->count_planes == 0) {
drmModeFreePlaneResources(plane_res);
return true;
}
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drm->num_planes = plane_res->count_planes;
drm->planes = calloc(drm->num_planes, sizeof(*drm->planes));
if (!drm->planes) {
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wlr_log_errno(L_ERROR, "Allocation failed");
goto error_res;
}
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for (size_t i = 0; i < drm->num_planes; ++i) {
struct wlr_drm_plane *p = &drm->planes[i];
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drmModePlane *plane = drmModeGetPlane(drm->fd, plane_res->planes[i]);
if (!plane) {
wlr_log_errno(L_ERROR, "Failed to get DRM plane");
goto error_planes;
}
p->id = plane->plane_id;
p->possible_crtcs = plane->possible_crtcs;
uint64_t type;
if (!wlr_drm_get_plane_props(drm->fd, p->id, &p->props) ||
!wlr_drm_get_prop(drm->fd, p->id, p->props.type, &type)) {
drmModeFreePlane(plane);
goto error_planes;
}
p->type = type;
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drm->num_type_planes[type]++;
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drmModeFreePlane(plane);
}
wlr_log(L_INFO, "(%zu overlay, %zu primary, %zu cursor)",
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drm->num_overlay_planes, drm->num_primary_planes, drm->num_cursor_planes);
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qsort(drm->planes, drm->num_planes, sizeof(*drm->planes), cmp_plane);
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drm->overlay_planes = drm->planes;
drm->primary_planes = drm->overlay_planes + drm->num_overlay_planes;
drm->cursor_planes = drm->primary_planes + drm->num_primary_planes;
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return true;
error_planes:
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free(drm->planes);
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error_res:
drmModeFreePlaneResources(plane_res);
return false;
}
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bool wlr_drm_resources_init(struct wlr_backend_state *drm) {
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drmModeRes *res = drmModeGetResources(drm->fd);
if (!res) {
wlr_log_errno(L_ERROR, "Failed to get DRM resources");
return false;
}
wlr_log(L_INFO, "Found %d DRM CRTCs", res->count_crtcs);
drm->num_crtcs = res->count_crtcs;
drm->crtcs = calloc(drm->num_crtcs, sizeof(drm->crtcs[0]));
if (!drm->crtcs) {
wlr_log_errno(L_ERROR, "Allocation failed");
goto error_res;
}
for (size_t i = 0; i < drm->num_crtcs; ++i) {
struct wlr_drm_crtc *crtc = &drm->crtcs[i];
crtc->id = res->crtcs[i];
wlr_drm_get_crtc_props(drm->fd, crtc->id, &crtc->props);
}
if (!init_planes(drm)) {
goto error_crtcs;
}
drmModeFreeResources(res);
return true;
error_crtcs:
free(drm->crtcs);
error_res:
drmModeFreeResources(res);
return false;
}
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void wlr_drm_resources_free(struct wlr_backend_state *drm) {
if (!drm)
return;
free(drm->crtcs);
free(drm->planes);
}
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bool wlr_drm_renderer_init(struct wlr_drm_renderer *renderer, int fd) {
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renderer->gbm = gbm_create_device(fd);
if (!renderer->gbm) {
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wlr_log(L_ERROR, "Failed to create GBM device: %s", strerror(errno));
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return false;
}
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if (!wlr_egl_init(&renderer->egl, EGL_PLATFORM_GBM_MESA, renderer->gbm)) {
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gbm_device_destroy(renderer->gbm);
return false;
}
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renderer->fd = fd;
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return true;
}
void wlr_drm_renderer_free(struct wlr_drm_renderer *renderer) {
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if (!renderer)
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return;
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wlr_egl_free(&renderer->egl);
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gbm_device_destroy(renderer->gbm);
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}
static void free_fb(struct gbm_bo *bo, void *data) {
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uint32_t id = (uintptr_t)data;
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if (id) {
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struct gbm_device *gbm = gbm_bo_get_device(bo);
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drmModeRmFB(gbm_device_get_fd(gbm), id);
}
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}
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static uint32_t get_fb_for_bo(struct gbm_bo *bo) {
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uint32_t id = (uintptr_t)gbm_bo_get_user_data(bo);
if (id)
return id;
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struct gbm_device *gbm = gbm_bo_get_device(bo);
drmModeAddFB(gbm_device_get_fd(gbm), gbm_bo_get_width(bo), gbm_bo_get_height(bo),
24, 32, gbm_bo_get_stride(bo), gbm_bo_get_handle(bo).u32, &id);
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gbm_bo_set_user_data(bo, (void *)(uintptr_t)id, free_fb);
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return id;
}
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static void wlr_drm_plane_make_current(struct wlr_drm_renderer *renderer,
struct wlr_drm_plane *plane) {
eglMakeCurrent(renderer->egl.display, plane->egl, plane->egl,
renderer->egl.context);
}
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static void wlr_drm_plane_swap_buffers(struct wlr_drm_renderer *renderer,
struct wlr_drm_plane *plane) {
if (plane->front)
gbm_surface_release_buffer(plane->gbm, plane->front);
eglSwapBuffers(renderer->egl.display, plane->egl);
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plane->front = plane->back;
plane->back = gbm_surface_lock_front_buffer(plane->gbm);
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}
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static void wlr_drm_output_make_current(struct wlr_output_state *output) {
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wlr_drm_plane_make_current(output->renderer, output->crtc->primary);
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}
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static void wlr_drm_output_swap_buffers(struct wlr_output_state *output) {
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struct wlr_drm_renderer *renderer = output->renderer;
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struct wlr_drm_crtc *crtc = output->crtc;
struct wlr_drm_plane *plane = crtc->primary;
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wlr_drm_plane_swap_buffers(renderer, plane);
uint32_t fb_id = get_fb_for_bo(plane->back);
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drmModePageFlip(renderer->fd, crtc->id, fb_id, DRM_MODE_PAGE_FLIP_EVENT, output);
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output->pageflip_pending = true;
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}
void wlr_drm_output_start_renderer(struct wlr_output_state *output) {
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if (output->state != WLR_DRM_OUTPUT_CONNECTED) {
return;
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}
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struct wlr_drm_renderer *renderer = output->renderer;
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struct wlr_output_mode *mode = output->base->current_mode;
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struct wlr_drm_crtc *crtc = output->crtc;
struct wlr_drm_plane *plane = crtc->primary;
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struct gbm_bo *bo = plane->front;
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if (!bo) {
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// Render a black frame to start the rendering loop
wlr_drm_plane_make_current(renderer, plane);
glViewport(0, 0, plane->width, plane->height);
glClearColor(0.0, 0.0, 0.0, 1.0);
glClear(GL_COLOR_BUFFER_BIT);
wlr_drm_plane_swap_buffers(renderer, plane);
bo = plane->back;
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}
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uint32_t fb_id = get_fb_for_bo(bo);
drmModeSetCrtc(renderer->fd, crtc->id, fb_id, 0, 0,
&output->connector, 1, &mode->state->mode);
drmModePageFlip(renderer->fd, crtc->id, fb_id, DRM_MODE_PAGE_FLIP_EVENT, output);
output->pageflip_pending = true;
}
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static bool plane_init_renderer(struct wlr_drm_renderer *renderer,
struct wlr_drm_plane *plane, struct wlr_output_mode *mode) {
plane->width = mode->width;
plane->height = mode->height;
plane->gbm = gbm_surface_create(renderer->gbm, mode->width,
mode->height, GBM_FORMAT_XRGB8888, GBM_BO_USE_SCANOUT | GBM_BO_USE_RENDERING);
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if (!plane->gbm) {
wlr_log_errno(L_ERROR, "Failed to create GBM surface for plane");
return false;
}
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plane->egl = wlr_egl_create_surface(&renderer->egl, plane->gbm);
if (plane->egl == EGL_NO_SURFACE) {
wlr_log(L_ERROR, "Failed to create EGL surface for plane");
return false;
}
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return true;
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}
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static int find_id(const void *item, const void *cmp_to) {
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const struct wlr_output_state *output = item;
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const uint32_t *id = cmp_to;
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if (output->connector < *id) {
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return -1;
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} else if (output->connector > *id) {
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return 1;
} else {
return 0;
}
}
static void wlr_drm_output_enable(struct wlr_output_state *output, bool enable) {
struct wlr_backend_state *state =
wl_container_of(output->renderer, state, renderer);
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if (output->state != WLR_DRM_OUTPUT_CONNECTED) {
return;
}
if (enable) {
drmModeConnectorSetProperty(state->fd, output->connector, output->props.dpms,
DRM_MODE_DPMS_ON);
// Start rendering loop again by drawing a black frame
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wlr_drm_output_make_current(output);
glClearColor(0.0, 0.0, 0.0, 1.0);
glClear(GL_COLOR_BUFFER_BIT);
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wlr_drm_output_swap_buffers(output);
} else {
drmModeConnectorSetProperty(state->fd, output->connector, output->props.dpms,
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DRM_MODE_DPMS_OFF);
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}
}
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static void realloc_planes(struct wlr_backend_state *drm, const uint32_t *crtc_in) {
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// overlay, primary, cursor
for (int type = 0; type < 3; ++type) {
if (drm->num_type_planes[type] == 0)
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continue;
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uint32_t possible[drm->num_type_planes[type]];
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uint32_t crtc[drm->num_crtcs];
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uint32_t crtc_res[drm->num_crtcs];
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for (size_t i = 0; i < drm->num_type_planes[type]; ++i)
possible[i] = drm->type_planes[type][i].possible_crtcs;
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for (size_t i = 0; i < drm->num_crtcs; ++i) {
if (crtc_in[i] == UNMATCHED)
crtc[i] = SKIP;
else if (drm->crtcs[i].planes[type])
crtc[i] = drm->crtcs[i].planes[type] - drm->type_planes[type];
else
crtc[i] = UNMATCHED;
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}
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match_obj(drm->num_type_planes[type], possible, drm->num_crtcs, crtc, crtc_res);
for (size_t i = 0; i < drm->num_crtcs; ++i) {
if (crtc_res[i] == UNMATCHED || crtc_res[i] == SKIP)
continue;
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struct wlr_drm_crtc *c = &drm->crtcs[i];
c->planes[type] = &drm->type_planes[type][crtc_res[i]];
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}
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}
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}
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static void realloc_crtcs(struct wlr_backend_state *drm, struct wlr_output_state *output) {
bool handled[drm->outputs->length];
uint32_t crtc[drm->num_crtcs];
uint32_t crtc_res[drm->num_crtcs];
uint32_t possible_crtc[drm->outputs->length];
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for (size_t i = 0; i < drm->num_crtcs; ++i) {
crtc[i] = UNMATCHED;
}
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memset(possible_crtc, 0, sizeof(possible_crtc));
memset(handled, 0, sizeof(handled));
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size_t index;
for (size_t i = 0; i < drm->outputs->length; ++i) {
struct wlr_output_state *o = drm->outputs->items[i];
if (o == output) {
index = i;
}
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if (o->state != WLR_DRM_OUTPUT_CONNECTED) {
continue;
}
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possible_crtc[i] = o->possible_crtc;
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crtc[o->crtc - drm->crtcs] = i;
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}
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possible_crtc[index] = output->possible_crtc;
match_obj(drm->outputs->length, possible_crtc, drm->num_crtcs, crtc, crtc_res);
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realloc_planes(drm, crtc_res);
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for (size_t i = 0; i < drm->num_crtcs; ++i) {
if (crtc_res[i] == UNMATCHED) {
continue;
}
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handled[crtc_res[i]] = true;
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if (crtc_res[i] != crtc[i]) {
struct wlr_output_state *o = drm->outputs->items[crtc_res[i]];
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o->crtc = &drm->crtcs[i];
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}
}
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for (size_t i = 0; i < drm->outputs->length; ++i) {
if (!handled[i]) {
wlr_drm_output_cleanup(drm->outputs->items[i], false);
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}
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}
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}
static bool wlr_drm_output_set_mode(struct wlr_output_state *output,
struct wlr_output_mode *mode) {
struct wlr_backend_state *drm = wl_container_of(output->renderer, drm, renderer);
wlr_log(L_INFO, "Modesetting '%s' with '%ux%u@%u mHz'", output->base->name,
mode->width, mode->height, mode->refresh);
drmModeConnector *conn = drmModeGetConnector(drm->fd, output->connector);
if (!conn) {
wlr_log_errno(L_ERROR, "Failed to get DRM connector");
goto error_output;
}
if (conn->connection != DRM_MODE_CONNECTED || conn->count_modes == 0) {
wlr_log(L_ERROR, "%s is not connected", output->base->name);
goto error_output;
}
drmModeEncoder *enc = NULL;
for (int i = 0; !enc && i < conn->count_encoders; ++i) {
enc = drmModeGetEncoder(drm->fd, conn->encoders[i]);
}
if (!enc) {
wlr_log(L_ERROR, "Failed to get DRM encoder");
goto error_conn;
}
output->possible_crtc = enc->possible_crtcs;
realloc_crtcs(drm, output);
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if (!output->crtc) {
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wlr_log(L_ERROR, "Unable to match %s with a CRTC", output->base->name);
goto error_enc;
}
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struct wlr_drm_crtc *crtc = output->crtc;
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wlr_log(L_DEBUG, "%s: crtc=%ju ovr=%jd pri=%jd cur=%jd", output->base->name,
crtc - drm->crtcs,
crtc->overlay ? crtc->overlay - drm->overlay_planes : -1,
crtc->primary ? crtc->primary - drm->primary_planes : -1,
crtc->cursor ? crtc->cursor - drm->cursor_planes : -1);
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output->state = WLR_DRM_OUTPUT_CONNECTED;
output->width = output->base->width = mode->width;
output->height = output->base->height = mode->height;
output->base->current_mode = mode;
wl_signal_emit(&output->base->events.resolution, output->base);
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if (!plane_init_renderer(&drm->renderer, output->crtc->primary, mode)) {
wlr_log(L_ERROR, "Failed to initalise renderer for plane");
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goto error_enc;
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}
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wlr_drm_output_start_renderer(output);
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drmModeFreeEncoder(enc);
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drmModeFreeConnector(conn);
return true;
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error_enc:
drmModeFreeEncoder(enc);
error_conn:
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drmModeFreeConnector(conn);
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error_output:
wlr_drm_output_cleanup(output, false);
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return false;
}
static void wlr_drm_output_transform(struct wlr_output_state *output,
enum wl_output_transform transform) {
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output->base->transform = transform;
}
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static bool wlr_drm_output_set_cursor(struct wlr_output_state *output,
const uint8_t *buf, int32_t stride, uint32_t width, uint32_t height) {
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struct wlr_backend_state *state = wl_container_of(output->renderer, state, renderer);
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if (!buf) {
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drmModeSetCursor(state->fd, output->crtc->id, 0, 0, 0);
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return true;
}
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if (!gbm_device_is_format_supported(state->renderer.gbm,
GBM_FORMAT_ARGB8888, GBM_BO_USE_CURSOR | GBM_BO_USE_WRITE)) {
wlr_log(L_ERROR, "Failed to create cursor bo: ARGB8888 pixel format is "
"unsupported on this device");
return false;
}
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uint64_t bo_width, bo_height;
int ret;
ret = drmGetCap(state->fd, DRM_CAP_CURSOR_WIDTH, &bo_width);
bo_width = ret ? 64 : bo_width;
ret = drmGetCap(state->fd, DRM_CAP_CURSOR_HEIGHT, &bo_height);
bo_height = ret ? 64 : bo_height;
if (width > bo_width || height > bo_width) {
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wlr_log(L_INFO, "Cursor too large (max %dx%d)", (int)bo_width, (int)bo_height);
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return false;
}
for (int i = 0; i < 2; ++i) {
if (output->cursor_bo[i]) {
continue;
}
output->cursor_bo[i] = gbm_bo_create(state->renderer.gbm, bo_width, bo_height,
GBM_FORMAT_ARGB8888, GBM_BO_USE_CURSOR | GBM_BO_USE_WRITE);
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if (!output->cursor_bo[i]) {
wlr_log(L_ERROR, "Failed to create cursor bo");
return false;
}
}
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struct gbm_bo *bo;
output->current_cursor ^= 1;
bo = output->cursor_bo[output->current_cursor];
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uint32_t bo_stride = gbm_bo_get_stride(bo);
uint8_t tmp[bo_stride * height];
memset(tmp, 0, sizeof(tmp));
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for (size_t i = 0; i < height; ++i) {
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memcpy(tmp + i * bo_stride, buf + i * stride * 4, width * 4);
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}
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if (gbm_bo_write(bo, tmp, sizeof(tmp)) < 0) {
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wlr_log(L_ERROR, "Failed to write cursor to bo");
return false;
}
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uint32_t bo_handle = gbm_bo_get_handle(bo).u32;
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if (drmModeSetCursor(state->fd, output->crtc->id, bo_handle, bo_width, bo_height)) {
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wlr_log_errno(L_INFO, "Failed to set hardware cursor");
return false;
}
return true;
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}
static bool wlr_drm_output_move_cursor(struct wlr_output_state *output,
int x, int y) {
struct wlr_backend_state *state =
wl_container_of(output->renderer, state, renderer);
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return !drmModeMoveCursor(state->fd, output->crtc->id, x, y);
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}
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static void wlr_drm_output_destroy(struct wlr_output_state *output) {
wlr_drm_output_cleanup(output, true);
free(output);
}
static struct wlr_output_impl output_impl = {
.enable = wlr_drm_output_enable,
.set_mode = wlr_drm_output_set_mode,
.transform = wlr_drm_output_transform,
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.set_cursor = wlr_drm_output_set_cursor,
.move_cursor = wlr_drm_output_move_cursor,
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.destroy = wlr_drm_output_destroy,
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.make_current = wlr_drm_output_make_current,
.swap_buffers = wlr_drm_output_swap_buffers,
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};
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static const int32_t subpixel_map[] = {
[DRM_MODE_SUBPIXEL_UNKNOWN] = WL_OUTPUT_SUBPIXEL_UNKNOWN,
[DRM_MODE_SUBPIXEL_HORIZONTAL_RGB] = WL_OUTPUT_SUBPIXEL_HORIZONTAL_RGB,
[DRM_MODE_SUBPIXEL_HORIZONTAL_BGR] = WL_OUTPUT_SUBPIXEL_HORIZONTAL_BGR,
[DRM_MODE_SUBPIXEL_VERTICAL_RGB] = WL_OUTPUT_SUBPIXEL_VERTICAL_RGB,
[DRM_MODE_SUBPIXEL_VERTICAL_BGR] = WL_OUTPUT_SUBPIXEL_VERTICAL_BGR,
[DRM_MODE_SUBPIXEL_NONE] = WL_OUTPUT_SUBPIXEL_NONE,
};
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void wlr_drm_scan_connectors(struct wlr_backend_state *drm) {
wlr_log(L_INFO, "Scanning DRM connectors");
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drmModeRes *res = drmModeGetResources(drm->fd);
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if (!res) {
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wlr_log_errno(L_ERROR, "Failed to get DRM resources");
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return;
}
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for (int i = 0; i < res->count_connectors; ++i) {
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drmModeConnector *conn = drmModeGetConnector(drm->fd,
res->connectors[i]);
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if (!conn) {
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wlr_log_errno(L_ERROR, "Failed to get DRM connector");
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continue;
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}
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struct wlr_output_state *output;
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int index = list_seq_find(drm->outputs, find_id, &conn->connector_id);
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if (index == -1) {
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output = calloc(1, sizeof(*output));
if (!output) {
wlr_log_errno(L_ERROR, "Allocation failed");
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drmModeFreeConnector(conn);
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continue;
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}
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output->base = wlr_output_create(&output_impl, output);
if (!output->base) {
wlr_log_errno(L_ERROR, "Allocation failed");
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drmModeFreeConnector(conn);
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free(output);
continue;
}
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output->renderer = &drm->renderer;
output->state = WLR_DRM_OUTPUT_DISCONNECTED;
output->connector = conn->connector_id;
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drmModeEncoder *curr_enc = drmModeGetEncoder(drm->fd, conn->encoder_id);
if (curr_enc) {
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output->old_crtc = drmModeGetCrtc(drm->fd, curr_enc->crtc_id);
drmModeFreeEncoder(curr_enc);
}
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output->base->phys_width = conn->mmWidth;
output->base->phys_height = conn->mmHeight;
output->base->subpixel = subpixel_map[conn->subpixel];
snprintf(output->base->name, sizeof(output->base->name), "%s-%"PRIu32,
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conn_get_name(conn->connector_type),
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conn->connector_type_id);
wlr_drm_get_connector_props(drm->fd, output->connector, &output->props);
size_t edid_len = 0;
uint8_t *edid = wlr_drm_get_prop_blob(drm->fd, output->connector,
output->props.edid, &edid_len);
parse_edid(output->base, edid_len, edid);
free(edid);
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wlr_output_create_global(output->base, drm->display);
list_add(drm->outputs, output);
wlr_log(L_INFO, "Found display '%s'", output->base->name);
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} else {
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output = drm->outputs->items[index];
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}
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if (output->state == WLR_DRM_OUTPUT_DISCONNECTED &&
conn->connection == DRM_MODE_CONNECTED) {
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wlr_log(L_INFO, "'%s' connected", output->base->name);
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wlr_log(L_INFO, "Detected modes:");
for (int i = 0; i < conn->count_modes; ++i) {
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struct wlr_output_mode_state *_state = calloc(1,
sizeof(struct wlr_output_mode_state));
_state->mode = conn->modes[i];
struct wlr_output_mode *mode = calloc(1,
sizeof(struct wlr_output_mode));
mode->width = _state->mode.hdisplay;
mode->height = _state->mode.vdisplay;
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mode->refresh = calculate_refresh_rate(&_state->mode);
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mode->state = _state;
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wlr_log(L_INFO, " %"PRId32"@%"PRId32"@%"PRId32,
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mode->width, mode->height, mode->refresh);
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list_add(output->base->modes, mode);
}
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output->state = WLR_DRM_OUTPUT_NEEDS_MODESET;
wlr_log(L_INFO, "Sending modesetting signal for '%s'", output->base->name);
wl_signal_emit(&drm->base->events.output_add, output->base);
} else if (output->state == WLR_DRM_OUTPUT_CONNECTED &&
conn->connection != DRM_MODE_CONNECTED) {
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wlr_log(L_INFO, "'%s' disconnected", output->base->name);
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wlr_drm_output_cleanup(output, false);
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}
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drmModeFreeConnector(conn);
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}
drmModeFreeResources(res);
}
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static void page_flip_handler(int fd, unsigned seq,
unsigned tv_sec, unsigned tv_usec, void *user) {
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struct wlr_output_state *output = user;
struct wlr_backend_state *state =
wl_container_of(output->renderer, state, renderer);
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struct wlr_drm_plane *plane = output->crtc->primary;
if (plane->front) {
gbm_surface_release_buffer(plane->gbm, plane->front);
plane->front = NULL;
}
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output->pageflip_pending = false;
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if (output->state == WLR_DRM_OUTPUT_CONNECTED && state->session->active) {
wl_signal_emit(&output->base->events.frame, output->base);
}
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}
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int wlr_drm_event(int fd, uint32_t mask, void *data) {
drmEventContext event = {
.version = DRM_EVENT_CONTEXT_VERSION,
.page_flip_handler = page_flip_handler,
};
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drmHandleEvent(fd, &event);
return 1;
}
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static void restore_output(struct wlr_output_state *output, int fd) {
// Wait for any pending pageflips to finish
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while (output->pageflip_pending) {
wlr_drm_event(fd, 0, NULL);
}
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drmModeCrtc *crtc = output->old_crtc;
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if (!crtc) {
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return;
}
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drmModeSetCrtc(fd, crtc->crtc_id, crtc->buffer_id, crtc->x, crtc->y,
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&output->connector, 1, &crtc->mode);
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drmModeFreeCrtc(crtc);
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}
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void wlr_drm_output_cleanup(struct wlr_output_state *output, bool restore) {
if (!output) {
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return;
}
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struct wlr_drm_renderer *renderer = output->renderer;
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struct wlr_backend_state *state = wl_container_of(renderer, state, renderer);
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switch (output->state) {
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case WLR_DRM_OUTPUT_CONNECTED:
output->state = WLR_DRM_OUTPUT_DISCONNECTED;
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if (restore) {
restore_output(output, renderer->fd);
restore = false;
}
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output->crtc = NULL;
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output->possible_crtc = 0;
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/* Fallthrough */
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case WLR_DRM_OUTPUT_NEEDS_MODESET:
output->state = WLR_DRM_OUTPUT_DISCONNECTED;
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if (restore) {
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restore_output(output, renderer->fd);
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}
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wlr_log(L_INFO, "Emmiting destruction signal for '%s'", output->base->name);
wl_signal_emit(&state->base->events.output_remove, output->base);
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break;
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case WLR_DRM_OUTPUT_DISCONNECTED:
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break;
}
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}