diff options
Diffstat (limited to 'backend/headless/backend.c')
| -rw-r--r-- | backend/headless/backend.c | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/backend/headless/backend.c b/backend/headless/backend.c new file mode 100644 index 00000000..f95e3897 --- /dev/null +++ b/backend/headless/backend.c @@ -0,0 +1,114 @@ +#include <stdlib.h> +#include <EGL/egl.h> +#include <EGL/eglext.h> +#include <wlr/util/log.h> +#include <wlr/interfaces/wlr_output.h> +#include <wlr/interfaces/wlr_input_device.h> +#include "backend/headless.h" +#include "glapi.h" + +static bool backend_start(struct wlr_backend *wlr_backend) { + struct wlr_headless_backend *backend = + (struct wlr_headless_backend *)wlr_backend; + wlr_log(L_INFO, "Starting headless backend"); + + struct wlr_headless_output *output; + wl_list_for_each(output, &backend->outputs, link) { + wl_event_source_timer_update(output->frame_timer, output->frame_delay); + wlr_output_create_global(&output->wlr_output, backend->display); + wl_signal_emit(&backend->backend.events.output_add, + &output->wlr_output); + } + + struct wlr_headless_input_device *input_device; + wl_list_for_each(input_device, &backend->input_devices, + wlr_input_device.link) { + wl_signal_emit(&backend->backend.events.input_add, + &input_device->wlr_input_device); + } + + backend->started = true; + return true; +} + +static void backend_destroy(struct wlr_backend *wlr_backend) { + struct wlr_headless_backend *backend = + (struct wlr_headless_backend *)wlr_backend; + if (!wlr_backend) { + return; + } + + wl_list_remove(&backend->display_destroy.link); + + struct wlr_headless_output *output, *output_tmp; + wl_list_for_each_safe(output, output_tmp, &backend->outputs, link) { + wlr_output_destroy(&output->wlr_output); + } + + struct wlr_headless_input_device *input_device, *input_device_tmp; + wl_list_for_each_safe(input_device, input_device_tmp, + &backend->input_devices, wlr_input_device.link) { + wlr_input_device_destroy(&input_device->wlr_input_device); + } + + wlr_egl_finish(&backend->egl); + free(backend); +} + +static struct wlr_egl *backend_get_egl(struct wlr_backend *wlr_backend) { + struct wlr_headless_backend *backend = + (struct wlr_headless_backend *)wlr_backend; + return &backend->egl; +} + +static const struct wlr_backend_impl backend_impl = { + .start = backend_start, + .destroy = backend_destroy, + .get_egl = backend_get_egl, +}; + +static void handle_display_destroy(struct wl_listener *listener, void *data) { + struct wlr_headless_backend *backend = + wl_container_of(listener, backend, display_destroy); + backend_destroy(&backend->backend); +} + +struct wlr_backend *wlr_headless_backend_create(struct wl_display *display) { + wlr_log(L_INFO, "Creating headless backend"); + + struct wlr_headless_backend *backend = + calloc(1, sizeof(struct wlr_headless_backend)); + if (!backend) { + wlr_log(L_ERROR, "Failed to allocate wlr_headless_backend"); + return NULL; + } + wlr_backend_init(&backend->backend, &backend_impl); + backend->display = display; + wl_list_init(&backend->outputs); + wl_list_init(&backend->input_devices); + + static const EGLint config_attribs[] = { + EGL_SURFACE_TYPE, EGL_PBUFFER_BIT, + EGL_ALPHA_SIZE, 0, + EGL_BLUE_SIZE, 8, + EGL_GREEN_SIZE, 8, + EGL_RED_SIZE, 8, + EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT, + EGL_NONE, + }; + bool ok = wlr_egl_init(&backend->egl, EGL_PLATFORM_SURFACELESS_MESA, NULL, + (EGLint *)config_attribs, 0); + if (!ok) { + free(backend); + return NULL; + } + + backend->display_destroy.notify = handle_display_destroy; + wl_display_add_destroy_listener(display, &backend->display_destroy); + + return &backend->backend; +} + +bool wlr_backend_is_headless(struct wlr_backend *backend) { + return backend->impl == &backend_impl; +} |