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337 lines
11 KiB
337 lines
11 KiB
#include <stdio.h>
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#include <assert.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/mman.h>
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#include <wayland-client.h>
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#include <GLES2/gl2.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 "backend/wayland.h"
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#include "xdg-shell-unstable-v6-client-protocol.h"
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int os_create_anonymous_file(off_t size);
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static struct wl_callback_listener frame_listener;
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static void surface_frame_callback(void *data, struct wl_callback *cb, uint32_t time) {
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struct wlr_output *wlr_output = data;
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assert(wlr_output);
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wl_signal_emit(&wlr_output->events.frame, wlr_output);
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wl_callback_destroy(cb);
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}
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static struct wl_callback_listener frame_listener = {
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.done = surface_frame_callback
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};
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static bool wlr_wl_output_set_custom_mode(struct wlr_output *_output,
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int32_t width, int32_t height, int32_t refresh) {
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struct wlr_wl_backend_output *output = (struct wlr_wl_backend_output *)_output;
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wl_egl_window_resize(output->egl_window, width, height, 0, 0);
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wlr_output_update_custom_mode(&output->wlr_output, width, height, 0);
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return true;
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}
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static void wlr_wl_output_make_current(struct wlr_output *_output) {
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struct wlr_wl_backend_output *output = (struct wlr_wl_backend_output *)_output;
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if (!eglMakeCurrent(output->backend->egl.display,
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output->egl_surface, output->egl_surface,
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output->backend->egl.context)) {
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wlr_log(L_ERROR, "eglMakeCurrent failed: %s", egl_error());
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}
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}
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static void wlr_wl_output_swap_buffers(struct wlr_output *_output) {
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struct wlr_wl_backend_output *output = (struct wlr_wl_backend_output *)_output;
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output->frame_callback = wl_surface_frame(output->surface);
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wl_callback_add_listener(output->frame_callback, &frame_listener, output);
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if (!eglSwapBuffers(output->backend->egl.display, output->egl_surface)) {
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wlr_log(L_ERROR, "eglSwapBuffers failed: %s", egl_error());
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}
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}
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static void wlr_wl_output_transform(struct wlr_output *_output,
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enum wl_output_transform transform) {
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struct wlr_wl_backend_output *output = (struct wlr_wl_backend_output *)_output;
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output->wlr_output.transform = transform;
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}
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static bool wlr_wl_output_set_cursor(struct wlr_output *_output,
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const uint8_t *buf, int32_t stride, uint32_t width, uint32_t height,
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int32_t hotspot_x, int32_t hotspot_y, bool update_pixels) {
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struct wlr_wl_backend_output *output =
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(struct wlr_wl_backend_output *)_output;
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struct wlr_wl_backend *backend = output->backend;
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// TODO: use output->wlr_output.transform to transform pixels and hotpot
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output->cursor.hotspot_x = hotspot_x;
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output->cursor.hotspot_y = hotspot_y;
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if (!update_pixels) {
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// Update hotspot without changing cursor image
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wlr_wl_output_update_cursor(output);
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return true;
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}
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if (!buf) {
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// Hide cursor
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if (output->cursor.surface) {
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wl_surface_destroy(output->cursor.surface);
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munmap(output->cursor.data, output->cursor.buf_size);
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output->cursor.surface = NULL;
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output->cursor.buf_size = 0;
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}
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wlr_wl_output_update_cursor(output);
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return true;
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}
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stride *= 4; // stride is given in pixels, we need it in bytes
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if (!backend->shm || !backend->pointer) {
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wlr_log(L_INFO, "cannot set cursor, no shm or pointer");
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return false;
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}
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if (!output->cursor.surface) {
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output->cursor.surface =
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wl_compositor_create_surface(output->backend->compositor);
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}
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uint32_t size = stride * height;
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if (output->cursor.buf_size != size) {
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if (output->cursor.buffer) {
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wl_buffer_destroy(output->cursor.buffer);
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}
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if (size > output->cursor.buf_size) {
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if (output->cursor.pool) {
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wl_shm_pool_destroy(output->cursor.pool);
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output->cursor.pool = NULL;
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munmap(output->cursor.data, output->cursor.buf_size);
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}
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}
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if (!output->cursor.pool) {
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int fd = os_create_anonymous_file(size);
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if (fd < 0) {
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wlr_log_errno(L_INFO,
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"creating anonymous file for cursor buffer failed");
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return false;
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}
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output->cursor.data = mmap(NULL, size, PROT_READ | PROT_WRITE,
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MAP_SHARED, fd, 0);
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if (output->cursor.data == MAP_FAILED) {
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close(fd);
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wlr_log_errno(L_INFO, "mmap failed");
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return false;
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}
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output->cursor.pool = wl_shm_create_pool(backend->shm, fd, size);
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close(fd);
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}
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output->cursor.buffer = wl_shm_pool_create_buffer(output->cursor.pool,
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0, width, height, stride, WL_SHM_FORMAT_ARGB8888);
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output->cursor.buf_size = size;
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}
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memcpy(output->cursor.data, buf, size);
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wl_surface_attach(output->cursor.surface, output->cursor.buffer, 0, 0);
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wl_surface_damage(output->cursor.surface, 0, 0, width, height);
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wl_surface_commit(output->cursor.surface);
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wlr_wl_output_update_cursor(output);
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return true;
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}
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static void wlr_wl_output_destroy(struct wlr_output *_output) {
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struct wlr_wl_backend_output *output =
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(struct wlr_wl_backend_output *)_output;
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wl_signal_emit(&output->backend->backend.events.output_remove,
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&output->wlr_output);
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wl_list_remove(&output->link);
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if (output->cursor.buf_size != 0) {
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assert(output->cursor.data);
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assert(output->cursor.buffer);
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assert(output->cursor.pool);
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wl_buffer_destroy(output->cursor.buffer);
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munmap(output->cursor.data, output->cursor.buf_size);
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wl_shm_pool_destroy(output->cursor.pool);
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}
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if (output->cursor.surface) {
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wl_surface_destroy(output->cursor.surface);
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}
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if (output->frame_callback) {
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wl_callback_destroy(output->frame_callback);
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}
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eglDestroySurface(output->backend->egl.display, output->surface);
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wl_egl_window_destroy(output->egl_window);
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zxdg_toplevel_v6_destroy(output->xdg_toplevel);
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zxdg_surface_v6_destroy(output->xdg_surface);
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wl_surface_destroy(output->surface);
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free(output);
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}
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void wlr_wl_output_update_cursor(struct wlr_wl_backend_output *output) {
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if (output->backend->pointer && output->enter_serial) {
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wl_pointer_set_cursor(output->backend->pointer, output->enter_serial,
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output->cursor.surface, output->cursor.hotspot_x,
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output->cursor.hotspot_y);
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}
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}
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bool wlr_wl_output_move_cursor(struct wlr_output *_output, int x, int y) {
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// TODO: only return true if x == current x and y == current y
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return true;
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}
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static struct wlr_output_impl output_impl = {
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.set_custom_mode = wlr_wl_output_set_custom_mode,
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.transform = wlr_wl_output_transform,
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.destroy = wlr_wl_output_destroy,
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.make_current = wlr_wl_output_make_current,
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.swap_buffers = wlr_wl_output_swap_buffers,
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.set_cursor = wlr_wl_output_set_cursor,
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.move_cursor = wlr_wl_output_move_cursor,
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};
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bool wlr_output_is_wl(struct wlr_output *wlr_output) {
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return wlr_output->impl == &output_impl;
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}
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static void xdg_surface_handle_configure(void *data, struct zxdg_surface_v6 *xdg_surface,
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uint32_t serial) {
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struct wlr_wl_backend_output *output = data;
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assert(output && output->xdg_surface == xdg_surface);
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zxdg_surface_v6_ack_configure(xdg_surface, serial);
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// nothing else?
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}
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static struct zxdg_surface_v6_listener xdg_surface_listener = {
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.configure = xdg_surface_handle_configure,
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};
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static void xdg_toplevel_handle_configure(void *data, struct zxdg_toplevel_v6 *xdg_toplevel,
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int32_t width, int32_t height, struct wl_array *states) {
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struct wlr_wl_backend_output *output = data;
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assert(output && output->xdg_toplevel == xdg_toplevel);
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if (width == 0 && height == 0) {
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return;
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}
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// loop over states for maximized etc?
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wl_egl_window_resize(output->egl_window, width, height, 0, 0);
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wlr_output_update_custom_mode(&output->wlr_output, width, height, 0);
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}
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static void xdg_toplevel_handle_close(void *data, struct zxdg_toplevel_v6 *xdg_toplevel) {
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struct wlr_wl_backend_output *output = data;
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assert(output && output->xdg_toplevel == xdg_toplevel);
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wlr_output_destroy((struct wlr_output *)output);
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}
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static struct zxdg_toplevel_v6_listener xdg_toplevel_listener = {
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.configure = xdg_toplevel_handle_configure,
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.close = xdg_toplevel_handle_close,
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};
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struct wlr_output *wlr_wl_output_create(struct wlr_backend *_backend) {
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assert(wlr_backend_is_wl(_backend));
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struct wlr_wl_backend *backend = (struct wlr_wl_backend *)_backend;
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if (!backend->started) {
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++backend->requested_outputs;
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return NULL;
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}
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struct wlr_wl_backend_output *output;
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if (!(output = calloc(sizeof(struct wlr_wl_backend_output), 1))) {
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wlr_log(L_ERROR, "Failed to allocate wlr_wl_backend_output");
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return NULL;
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}
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wlr_output_init(&output->wlr_output, &backend->backend, &output_impl,
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backend->local_display);
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struct wlr_output *wlr_output = &output->wlr_output;
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wlr_output_update_custom_mode(wlr_output, 1280, 720, 0);
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strncpy(wlr_output->make, "wayland", sizeof(wlr_output->make));
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strncpy(wlr_output->model, "wayland", sizeof(wlr_output->model));
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snprintf(wlr_output->name, sizeof(wlr_output->name), "WL-%d",
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wl_list_length(&backend->outputs) + 1);
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output->backend = backend;
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output->surface = wl_compositor_create_surface(backend->compositor);
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if (!output->surface) {
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wlr_log_errno(L_ERROR, "Could not create output surface");
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goto error;
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}
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output->xdg_surface =
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zxdg_shell_v6_get_xdg_surface(backend->shell, output->surface);
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if (!output->xdg_surface) {
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wlr_log_errno(L_ERROR, "Could not get xdg surface");
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goto error;
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}
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output->xdg_toplevel =
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zxdg_surface_v6_get_toplevel(output->xdg_surface);
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if (!output->xdg_toplevel) {
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wlr_log_errno(L_ERROR, "Could not get xdg toplevel");
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goto error;
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}
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zxdg_toplevel_v6_set_app_id(output->xdg_toplevel, "wlroots");
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zxdg_toplevel_v6_set_title(output->xdg_toplevel, "wlroots");
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zxdg_surface_v6_add_listener(output->xdg_surface,
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&xdg_surface_listener, output);
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zxdg_toplevel_v6_add_listener(output->xdg_toplevel,
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&xdg_toplevel_listener, output);
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wl_surface_commit(output->surface);
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output->egl_window = wl_egl_window_create(output->surface,
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wlr_output->width, wlr_output->height);
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output->egl_surface = wlr_egl_create_surface(&backend->egl, output->egl_window);
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wl_display_roundtrip(output->backend->remote_display);
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// start rendering loop per callbacks by rendering first frame
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if (!eglMakeCurrent(output->backend->egl.display,
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output->egl_surface, output->egl_surface,
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output->backend->egl.context)) {
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wlr_log(L_ERROR, "eglMakeCurrent failed: %s", egl_error());
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goto error;
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}
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glViewport(0, 0, wlr_output->width, wlr_output->height);
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glClearColor(1.0, 1.0, 1.0, 1.0);
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glClear(GL_COLOR_BUFFER_BIT);
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output->frame_callback = wl_surface_frame(output->surface);
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wl_callback_add_listener(output->frame_callback, &frame_listener, output);
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if (!eglSwapBuffers(output->backend->egl.display, output->egl_surface)) {
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wlr_log(L_ERROR, "eglSwapBuffers failed: %s", egl_error());
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goto error;
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}
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wl_list_insert(&backend->outputs, &output->link);
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wlr_output_update_enabled(wlr_output, true);
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wl_signal_emit(&backend->backend.events.output_add, wlr_output);
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return wlr_output;
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error:
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wlr_output_destroy(&output->wlr_output);
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return NULL;
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}
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