131 lines
3.8 KiB
C
131 lines
3.8 KiB
C
#include <stdlib.h>
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#include <wlr/render/egl.h>
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#include <wlr/render/gles2.h>
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#include <wlr/util/log.h>
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#include "util/signal.h"
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#include <wlr/interfaces/wlr_output.h>
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#include <wlr/interfaces/wlr_input_device.h>
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#include "backend/headless.h"
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#include "glapi.h"
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static bool backend_start(struct wlr_backend *wlr_backend) {
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struct wlr_headless_backend *backend =
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(struct wlr_headless_backend *)wlr_backend;
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wlr_log(L_INFO, "Starting headless backend");
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struct wlr_headless_output *output;
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wl_list_for_each(output, &backend->outputs, link) {
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wl_event_source_timer_update(output->frame_timer, output->frame_delay);
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wlr_output_update_enabled(&output->wlr_output, true);
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wlr_signal_emit_safe(&backend->backend.events.new_output,
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&output->wlr_output);
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}
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struct wlr_headless_input_device *input_device;
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wl_list_for_each(input_device, &backend->input_devices,
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wlr_input_device.link) {
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wlr_signal_emit_safe(&backend->backend.events.new_input,
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&input_device->wlr_input_device);
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}
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backend->started = true;
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return true;
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}
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static void backend_destroy(struct wlr_backend *wlr_backend) {
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struct wlr_headless_backend *backend =
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(struct wlr_headless_backend *)wlr_backend;
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if (!wlr_backend) {
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return;
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}
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wl_list_remove(&backend->display_destroy.link);
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struct wlr_headless_output *output, *output_tmp;
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wl_list_for_each_safe(output, output_tmp, &backend->outputs, link) {
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wlr_output_destroy(&output->wlr_output);
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}
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struct wlr_headless_input_device *input_device, *input_device_tmp;
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wl_list_for_each_safe(input_device, input_device_tmp,
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&backend->input_devices, wlr_input_device.link) {
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wlr_input_device_destroy(&input_device->wlr_input_device);
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}
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wlr_signal_emit_safe(&wlr_backend->events.destroy, backend);
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wlr_egl_finish(&backend->egl);
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free(backend);
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}
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static struct wlr_egl *backend_get_egl(struct wlr_backend *wlr_backend) {
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struct wlr_headless_backend *backend =
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(struct wlr_headless_backend *)wlr_backend;
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return &backend->egl;
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}
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static struct wlr_renderer *backend_get_renderer(
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struct wlr_backend *wlr_backend) {
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struct wlr_headless_backend *backend =
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(struct wlr_headless_backend *)wlr_backend;
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return backend->renderer;
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}
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static const struct wlr_backend_impl backend_impl = {
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.start = backend_start,
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.destroy = backend_destroy,
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.get_egl = backend_get_egl,
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.get_renderer = backend_get_renderer,
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};
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static void handle_display_destroy(struct wl_listener *listener, void *data) {
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struct wlr_headless_backend *backend =
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wl_container_of(listener, backend, display_destroy);
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backend_destroy(&backend->backend);
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}
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struct wlr_backend *wlr_headless_backend_create(struct wl_display *display) {
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wlr_log(L_INFO, "Creating headless backend");
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struct wlr_headless_backend *backend =
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calloc(1, sizeof(struct wlr_headless_backend));
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if (!backend) {
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wlr_log(L_ERROR, "Failed to allocate wlr_headless_backend");
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return NULL;
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}
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wlr_backend_init(&backend->backend, &backend_impl);
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backend->display = display;
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wl_list_init(&backend->outputs);
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wl_list_init(&backend->input_devices);
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static const EGLint config_attribs[] = {
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EGL_SURFACE_TYPE, EGL_PBUFFER_BIT,
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EGL_ALPHA_SIZE, 0,
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EGL_BLUE_SIZE, 8,
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EGL_GREEN_SIZE, 8,
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EGL_RED_SIZE, 8,
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EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
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EGL_NONE,
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};
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bool ok = wlr_egl_init(&backend->egl, EGL_PLATFORM_SURFACELESS_MESA, NULL,
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(EGLint *)config_attribs, 0);
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if (!ok) {
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free(backend);
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return NULL;
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}
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backend->renderer = wlr_gles2_renderer_create(&backend->backend);
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if (backend->renderer == NULL) {
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wlr_log(L_ERROR, "Failed to create renderer");
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}
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backend->display_destroy.notify = handle_display_destroy;
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wl_display_add_destroy_listener(display, &backend->display_destroy);
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return &backend->backend;
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}
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bool wlr_backend_is_headless(struct wlr_backend *backend) {
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return backend->impl == &backend_impl;
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}
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