wlroots/types/wlr_output.c

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#define _POSIX_C_SOURCE 200809L
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#include <assert.h>
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#include <stdlib.h>
#include <string.h>
#include <tgmath.h>
#include <time.h>
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#include <wayland-server.h>
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#include <wlr/types/wlr_box.h>
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#include <wlr/types/wlr_output.h>
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#include <wlr/types/wlr_surface.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 <GLES2/gl2.h>
#include <wlr/render/matrix.h>
#include <wlr/render/gles2.h>
#include <wlr/render.h>
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static void wl_output_send_to_resource(struct wl_resource *resource) {
assert(resource);
struct wlr_output *output = wl_resource_get_user_data(resource);
assert(output);
const uint32_t version = wl_resource_get_version(resource);
if (version >= WL_OUTPUT_GEOMETRY_SINCE_VERSION) {
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wl_output_send_geometry(resource, output->lx, output->ly,
output->phys_width, output->phys_height, output->subpixel,
output->make, output->model, output->transform);
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}
if (version >= WL_OUTPUT_MODE_SINCE_VERSION) {
struct wlr_output_mode *mode;
wl_list_for_each(mode, &output->modes, link) {
uint32_t flags = mode->flags & WL_OUTPUT_MODE_PREFERRED;
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if (output->current_mode == mode) {
flags |= WL_OUTPUT_MODE_CURRENT;
}
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wl_output_send_mode(resource, flags, mode->width, mode->height,
mode->refresh);
}
if (wl_list_length(&output->modes) == 0) {
// Output has no mode, send the current width/height
wl_output_send_mode(resource, WL_OUTPUT_MODE_CURRENT,
output->width, output->height, 0);
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}
}
if (version >= WL_OUTPUT_SCALE_SINCE_VERSION) {
wl_output_send_scale(resource, output->scale);
}
if (version >= WL_OUTPUT_DONE_SINCE_VERSION) {
wl_output_send_done(resource);
}
}
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static void wlr_output_send_current_mode_to_resource(
struct wl_resource *resource) {
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assert(resource);
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struct wlr_output *output = wl_resource_get_user_data(resource);
assert(output);
const uint32_t version = wl_resource_get_version(resource);
if (version < WL_OUTPUT_MODE_SINCE_VERSION) {
return;
}
if (output->current_mode != NULL) {
struct wlr_output_mode *mode = output->current_mode;
uint32_t flags = mode->flags & WL_OUTPUT_MODE_PREFERRED;
wl_output_send_mode(resource, flags | WL_OUTPUT_MODE_CURRENT,
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mode->width, mode->height, mode->refresh);
} else {
// Output has no mode, send the current width/height
wl_output_send_mode(resource, WL_OUTPUT_MODE_CURRENT, output->width,
output->height, 0);
}
if (version >= WL_OUTPUT_DONE_SINCE_VERSION) {
wl_output_send_done(resource);
}
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}
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static void wl_output_destroy(struct wl_resource *resource) {
struct wlr_output *output = wl_resource_get_user_data(resource);
struct wl_resource *_resource = NULL;
wl_resource_for_each(_resource, &output->wl_resources) {
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if (_resource == resource) {
struct wl_list *link = wl_resource_get_link(_resource);
wl_list_remove(link);
break;
}
}
}
static void wl_output_release(struct wl_client *client, struct wl_resource *resource) {
wl_output_destroy(resource);
}
static struct wl_output_interface wl_output_impl = {
.release = wl_output_release
};
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static void wl_output_bind(struct wl_client *wl_client, void *data,
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uint32_t version, uint32_t id) {
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struct wlr_output *wlr_output = data;
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assert(wl_client && wlr_output);
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struct wl_resource *wl_resource = wl_resource_create(wl_client,
&wl_output_interface, version, id);
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if (wl_resource == NULL) {
wl_client_post_no_memory(wl_client);
return;
}
wl_resource_set_implementation(wl_resource, &wl_output_impl, wlr_output,
wl_output_destroy);
wl_list_insert(&wlr_output->wl_resources,
wl_resource_get_link(wl_resource));
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wl_output_send_to_resource(wl_resource);
}
struct wl_global *wlr_output_create_global(struct wlr_output *wlr_output,
struct wl_display *display) {
if (wlr_output->wl_global != NULL) {
return wlr_output->wl_global;
}
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struct wl_global *wl_global = wl_global_create(display,
&wl_output_interface, 3, wlr_output, wl_output_bind);
wlr_output->wl_global = wl_global;
return wl_global;
}
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void wlr_output_destroy_global(struct wlr_output *wlr_output) {
if (wlr_output->wl_global == NULL) {
return;
}
struct wl_resource *resource, *tmp;
wl_resource_for_each_safe(resource, tmp, &wlr_output->wl_resources) {
struct wl_list *link = wl_resource_get_link(resource);
wl_list_remove(link);
}
wl_global_destroy(wlr_output->wl_global);
wlr_output->wl_global = NULL;
}
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static void wlr_output_update_matrix(struct wlr_output *output) {
wlr_matrix_texture(output->transform_matrix, output->width, output->height,
output->transform);
}
void wlr_output_enable(struct wlr_output *output, bool enable) {
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if (output->impl->enable) {
output->impl->enable(output, enable);
}
}
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bool wlr_output_set_mode(struct wlr_output *output,
struct wlr_output_mode *mode) {
if (!output->impl || !output->impl->set_mode) {
return false;
}
bool result = output->impl->set_mode(output, mode);
if (result) {
wlr_output_update_matrix(output);
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struct wl_resource *resource;
wl_resource_for_each(resource, &output->wl_resources) {
wlr_output_send_current_mode_to_resource(resource);
}
}
return result;
}
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bool wlr_output_set_custom_mode(struct wlr_output *output, int32_t width,
int32_t height, int32_t refresh) {
if (!output->impl || !output->impl->set_custom_mode) {
return false;
}
bool result = output->impl->set_custom_mode(output, width, height, refresh);
if (result) {
wlr_output_update_matrix(output);
struct wl_resource *resource;
wl_resource_for_each(resource, &output->wl_resources) {
wlr_output_send_current_mode_to_resource(resource);
}
}
return result;
}
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void wlr_output_update_size(struct wlr_output *output, int32_t width,
int32_t height) {
if (output->width == width && output->height == height) {
return;
}
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output->width = width;
output->height = height;
wlr_output_update_matrix(output);
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struct wl_resource *resource;
wl_resource_for_each(resource, &output->wl_resources) {
wlr_output_send_current_mode_to_resource(resource);
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}
wl_signal_emit(&output->events.resolution, output);
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}
void wlr_output_set_transform(struct wlr_output *output,
enum wl_output_transform transform) {
output->impl->transform(output, transform);
wlr_output_update_matrix(output);
// TODO: only send geometry and done
struct wl_resource *resource;
wl_resource_for_each(resource, &output->wl_resources) {
wl_output_send_to_resource(resource);
}
wl_signal_emit(&output->events.transform, output);
}
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void wlr_output_set_position(struct wlr_output *output, int32_t lx,
int32_t ly) {
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if (lx == output->lx && ly == output->ly) {
return;
}
output->lx = lx;
output->ly = ly;
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// TODO: only send geometry and done
struct wl_resource *resource;
wl_resource_for_each(resource, &output->wl_resources) {
wl_output_send_to_resource(resource);
}
}
void wlr_output_set_scale(struct wlr_output *output, uint32_t scale) {
if (output->scale == scale) {
return;
}
output->scale = scale;
// TODO: only send mode and done
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struct wl_resource *resource;
wl_resource_for_each(resource, &output->wl_resources) {
wl_output_send_to_resource(resource);
}
wl_signal_emit(&output->events.scale, output);
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}
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void wlr_output_init(struct wlr_output *output, struct wlr_backend *backend,
const struct wlr_output_impl *impl) {
assert(impl->make_current && impl->swap_buffers && impl->transform);
output->backend = backend;
output->impl = impl;
wl_list_init(&output->modes);
output->transform = WL_OUTPUT_TRANSFORM_NORMAL;
output->scale = 1;
wl_list_init(&output->cursors);
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wl_list_init(&output->wl_resources);
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wl_signal_init(&output->events.frame);
wl_signal_init(&output->events.swap_buffers);
wl_signal_init(&output->events.resolution);
wl_signal_init(&output->events.scale);
wl_signal_init(&output->events.transform);
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wl_signal_init(&output->events.destroy);
}
void wlr_output_destroy(struct wlr_output *output) {
if (!output) {
return;
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}
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wl_signal_emit(&output->events.destroy, output);
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struct wlr_output_mode *mode, *tmp_mode;
wl_list_for_each_safe(mode, tmp_mode, &output->modes, link) {
free(mode);
}
wl_list_remove(&output->modes);
if (output->impl && output->impl->destroy) {
output->impl->destroy(output);
} else {
free(output);
}
}
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void wlr_output_effective_resolution(struct wlr_output *output,
int *width, int *height) {
if (output->transform % 2 == 1) {
*width = output->height;
*height = output->width;
} else {
*width = output->width;
*height = output->height;
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}
*width /= output->scale;
*height /= output->scale;
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}
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void wlr_output_make_current(struct wlr_output *output) {
output->impl->make_current(output);
}
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static void output_fullscreen_surface_render(struct wlr_output *output,
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struct wlr_surface *surface, const struct timespec *when) {
int width, height;
wlr_output_effective_resolution(output, &width, &height);
int x = (width - surface->current->width) / 2;
int y = (height - surface->current->height) / 2;
int render_x = x * output->scale;
int render_y = y * output->scale;
int render_width = surface->current->width * output->scale;
int render_height = surface->current->height * output->scale;
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glViewport(0, 0, output->width, output->height);
glClearColor(0, 0, 0, 0);
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glClear(GL_COLOR_BUFFER_BIT);
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if (!wlr_surface_has_buffer(surface)) {
return;
}
float translate[16];
wlr_matrix_translate(&translate, render_x, render_y, 0);
float scale[16];
wlr_matrix_scale(&scale, render_width, render_height, 1);
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float matrix[16];
wlr_matrix_mul(&translate, &scale, &matrix);
wlr_matrix_mul(&output->transform_matrix, &matrix, &matrix);
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wlr_render_with_matrix(surface->renderer, surface->texture, &matrix);
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wlr_surface_send_frame_done(surface, when);
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}
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/**
* Returns the cursor box, scaled for its output.
*/
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static void output_cursor_get_box(struct wlr_output_cursor *cursor,
struct wlr_box *box) {
box->x = cursor->x - cursor->hotspot_x;
box->y = cursor->y - cursor->hotspot_y;
box->width = cursor->width;
box->height = cursor->height;
if (cursor->surface != NULL) {
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box->x += cursor->surface->current->sx * cursor->output->scale;
box->y += cursor->surface->current->sy * cursor->output->scale;
}
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}
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static void output_cursor_render(struct wlr_output_cursor *cursor,
const struct timespec *when) {
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struct wlr_texture *texture = cursor->texture;
struct wlr_renderer *renderer = cursor->renderer;
if (cursor->surface != NULL) {
texture = cursor->surface->texture;
renderer = cursor->surface->renderer;
}
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if (texture == NULL || renderer == NULL) {
return;
}
glViewport(0, 0, cursor->output->width, cursor->output->height);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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struct wlr_box cursor_box;
output_cursor_get_box(cursor, &cursor_box);
float translate[16];
wlr_matrix_translate(&translate, cursor_box.x, cursor_box.y, 0);
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float scale[16];
wlr_matrix_scale(&scale, cursor_box.width, cursor_box.height, 1);
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float matrix[16];
wlr_matrix_mul(&translate, &scale, &matrix);
wlr_matrix_mul(&cursor->output->transform_matrix, &matrix, &matrix);
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wlr_render_with_matrix(renderer, texture, &matrix);
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if (cursor->surface != NULL) {
wlr_surface_send_frame_done(cursor->surface, when);
}
}
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void wlr_output_swap_buffers(struct wlr_output *output) {
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wl_signal_emit(&output->events.swap_buffers, &output);
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struct timespec now;
clock_gettime(CLOCK_MONOTONIC, &now);
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if (output->fullscreen_surface != NULL) {
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output_fullscreen_surface_render(output, output->fullscreen_surface,
&now);
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}
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struct wlr_output_cursor *cursor;
wl_list_for_each(cursor, &output->cursors, link) {
if (!cursor->enabled || !cursor->visible ||
output->hardware_cursor == cursor) {
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continue;
}
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output_cursor_render(cursor, &now);
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}
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output->impl->swap_buffers(output);
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output->needs_swap = false;
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}
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void wlr_output_set_gamma(struct wlr_output *output,
uint32_t size, uint16_t *r, uint16_t *g, uint16_t *b) {
if (output->impl->set_gamma) {
output->impl->set_gamma(output, size, r, g, b);
}
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}
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uint32_t wlr_output_get_gamma_size(struct wlr_output *output) {
if (!output->impl->get_gamma_size) {
return 0;
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}
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return output->impl->get_gamma_size(output);
}
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static void output_fullscreen_surface_reset(struct wlr_output *output) {
if (output->fullscreen_surface != NULL) {
wl_list_remove(&output->fullscreen_surface_commit.link);
wl_list_remove(&output->fullscreen_surface_destroy.link);
output->fullscreen_surface = NULL;
output->needs_swap = true;
}
}
static void output_fullscreen_surface_handle_commit(
struct wl_listener *listener, void *data) {
struct wlr_output *output = wl_container_of(listener, output,
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fullscreen_surface_commit);
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output->needs_swap = true;
}
static void output_fullscreen_surface_handle_destroy(
struct wl_listener *listener, void *data) {
struct wlr_output *output = wl_container_of(listener, output,
fullscreen_surface_destroy);
output_fullscreen_surface_reset(output);
}
void wlr_output_set_fullscreen_surface(struct wlr_output *output,
struct wlr_surface *surface) {
// TODO: hardware fullscreen
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if (output->fullscreen_surface == surface) {
return;
}
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output_fullscreen_surface_reset(output);
output->fullscreen_surface = surface;
output->needs_swap = true;
if (surface == NULL) {
return;
}
output->fullscreen_surface_commit.notify =
output_fullscreen_surface_handle_commit;
wl_signal_add(&surface->events.commit, &output->fullscreen_surface_commit);
output->fullscreen_surface_destroy.notify =
output_fullscreen_surface_handle_destroy;
wl_signal_add(&surface->events.destroy,
&output->fullscreen_surface_destroy);
}
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static void output_cursor_reset(struct wlr_output_cursor *cursor) {
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if (cursor->output->hardware_cursor != cursor) {
cursor->output->needs_swap = true;
}
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if (cursor->surface != NULL) {
wl_list_remove(&cursor->surface_commit.link);
wl_list_remove(&cursor->surface_destroy.link);
cursor->surface = NULL;
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}
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}
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bool wlr_output_cursor_set_image(struct wlr_output_cursor *cursor,
const uint8_t *pixels, int32_t stride, uint32_t width, uint32_t height,
int32_t hotspot_x, int32_t hotspot_y) {
output_cursor_reset(cursor);
cursor->width = width;
cursor->height = height;
cursor->hotspot_x = hotspot_x;
cursor->hotspot_y = hotspot_y;
if (cursor->output->hardware_cursor == NULL &&
cursor->output->impl->set_cursor) {
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if (cursor->output->impl->move_cursor) {
cursor->output->impl->move_cursor(cursor->output,
(int)cursor->x, (int)cursor->y);
}
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int ok = cursor->output->impl->set_cursor(cursor->output, pixels,
stride, width, height, hotspot_x, hotspot_y, true);
if (ok) {
cursor->output->hardware_cursor = cursor;
return true;
}
}
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wlr_log(L_INFO, "Falling back to software cursor");
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cursor->output->needs_swap = true;
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cursor->enabled = pixels != NULL;
if (!cursor->enabled) {
return true;
}
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if (cursor->renderer == NULL) {
cursor->renderer = wlr_gles2_renderer_create(cursor->output->backend);
if (cursor->renderer == NULL) {
return false;
}
}
if (cursor->texture == NULL) {
cursor->texture = wlr_render_texture_create(cursor->renderer);
if (cursor->texture == NULL) {
return false;
}
}
return wlr_texture_upload_pixels(cursor->texture, WL_SHM_FORMAT_ARGB8888,
stride, width, height, pixels);
}
static void output_cursor_update_visible(struct wlr_output_cursor *cursor) {
struct wlr_box output_box;
output_box.x = output_box.y = 0;
wlr_output_effective_resolution(cursor->output, &output_box.width,
&output_box.height);
output_box.width *= cursor->output->scale;
output_box.height *= cursor->output->scale;
struct wlr_box cursor_box;
output_cursor_get_box(cursor, &cursor_box);
struct wlr_box intersection;
struct wlr_box *intersection_ptr = &intersection;
bool visible =
wlr_box_intersection(&output_box, &cursor_box, &intersection_ptr);
if (cursor->surface != NULL) {
if (cursor->visible && !visible) {
wlr_surface_send_leave(cursor->surface, cursor->output);
}
if (!cursor->visible && visible) {
wlr_surface_send_enter(cursor->surface, cursor->output);
}
}
cursor->visible = visible;
}
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static void output_cursor_commit(struct wlr_output_cursor *cursor) {
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// Some clients commit a cursor surface with a NULL buffer to hide it.
cursor->enabled = wlr_surface_has_buffer(cursor->surface);
cursor->width = cursor->surface->current->width * cursor->output->scale;
cursor->height = cursor->surface->current->height * cursor->output->scale;
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if (cursor->output->hardware_cursor != cursor) {
cursor->output->needs_swap = true;
} else {
// TODO: upload pixels
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struct timespec now;
clock_gettime(CLOCK_MONOTONIC, &now);
wlr_surface_send_frame_done(cursor->surface, &now);
}
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}
static void output_cursor_handle_commit(struct wl_listener *listener,
void *data) {
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struct wlr_output_cursor *cursor = wl_container_of(listener, cursor,
surface_commit);
output_cursor_commit(cursor);
}
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static void output_cursor_handle_destroy(struct wl_listener *listener,
void *data) {
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struct wlr_output_cursor *cursor = wl_container_of(listener, cursor,
surface_destroy);
output_cursor_reset(cursor);
}
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void wlr_output_cursor_set_surface(struct wlr_output_cursor *cursor,
struct wlr_surface *surface, int32_t hotspot_x, int32_t hotspot_y) {
if (surface && strcmp(surface->role, "wl_pointer-cursor") != 0) {
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return;
}
cursor->hotspot_x = hotspot_x * cursor->output->scale;
cursor->hotspot_y = hotspot_y * cursor->output->scale;
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if (surface && surface == cursor->surface) {
if (cursor->output->hardware_cursor == cursor &&
cursor->output->impl->set_cursor) {
// If the surface hasn't changed and it's an hardware cursor, only
// update the hotspot
cursor->output->impl->set_cursor(cursor->output, NULL, 0, 0, 0,
hotspot_x, hotspot_y, false);
}
return;
}
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output_cursor_reset(cursor);
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// Disable hardware cursor for surfaces
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// TODO: support hardware cursors
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if (cursor->output->hardware_cursor == cursor &&
cursor->output->impl->set_cursor) {
cursor->output->impl->set_cursor(cursor->output, NULL, 0, 0, 0, 0, 0,
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true);
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cursor->output->hardware_cursor = NULL;
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}
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cursor->surface = surface;
if (surface != NULL) {
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wl_signal_add(&surface->events.commit, &cursor->surface_commit);
wl_signal_add(&surface->events.destroy, &cursor->surface_destroy);
output_cursor_commit(cursor);
cursor->visible = false;
output_cursor_update_visible(cursor);
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} else {
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cursor->enabled = false;
cursor->width = 0;
cursor->height = 0;
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// TODO: if hardware cursor, disable cursor
}
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}
bool wlr_output_cursor_move(struct wlr_output_cursor *cursor,
double x, double y) {
x *= cursor->output->scale;
y *= cursor->output->scale;
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cursor->x = x;
cursor->y = y;
output_cursor_update_visible(cursor);
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if (cursor->output->hardware_cursor != cursor) {
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cursor->output->needs_swap = true;
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return true;
}
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if (!cursor->output->impl->move_cursor) {
return false;
}
return cursor->output->impl->move_cursor(cursor->output, (int)x, (int)y);
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}
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struct wlr_output_cursor *wlr_output_cursor_create(struct wlr_output *output) {
struct wlr_output_cursor *cursor =
calloc(1, sizeof(struct wlr_output_cursor));
if (cursor == NULL) {
return NULL;
}
cursor->output = output;
wl_list_init(&cursor->surface_commit.link);
cursor->surface_commit.notify = output_cursor_handle_commit;
wl_list_init(&cursor->surface_destroy.link);
cursor->surface_destroy.notify = output_cursor_handle_destroy;
wl_list_insert(&output->cursors, &cursor->link);
return cursor;
}
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void wlr_output_cursor_destroy(struct wlr_output_cursor *cursor) {
if (cursor == NULL) {
return;
}
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output_cursor_reset(cursor);
if (cursor->output->hardware_cursor == cursor) {
// If this cursor was the hardware cursor, disable it
if (cursor->output->impl->set_cursor) {
cursor->output->impl->set_cursor(cursor->output, NULL, 0, 0, 0, 0,
0, true);
}
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cursor->output->hardware_cursor = NULL;
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}
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if (cursor->texture != NULL) {
wlr_texture_destroy(cursor->texture);
}
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if (cursor->renderer != NULL) {
wlr_renderer_destroy(cursor->renderer);
}
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wl_list_remove(&cursor->link);
free(cursor);
}
void wlr_output_transform_apply_to_box(enum wl_output_transform transform,
struct wlr_box *box, struct wlr_box *dest) {
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if (transform % 2 == 0) {
dest->width = box->width;
dest->height = box->height;
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} else {
dest->width = box->height;
dest->height = box->width;
}
switch (transform) {
case WL_OUTPUT_TRANSFORM_NORMAL:
dest->x = box->x;
dest->y = box->y;
break;
case WL_OUTPUT_TRANSFORM_90:
dest->x = box->y;
dest->y = box->width - box->x;
break;
case WL_OUTPUT_TRANSFORM_180:
dest->x = box->width - box->x;
dest->y = box->height - box->y;
break;
case WL_OUTPUT_TRANSFORM_270:
dest->x = box->height - box->y;
dest->y = box->x;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED:
dest->x = box->width - box->x;
dest->y = box->y;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED_90:
dest->x = box->y;
dest->y = box->x;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED_180:
dest->x = box->x;
dest->y = box->height - box->y;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED_270:
dest->x = box->height - box->y;
dest->y = box->width - box->x;
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break;
}
}
enum wl_output_transform wlr_output_transform_invert(
enum wl_output_transform transform) {
if ((transform & WL_OUTPUT_TRANSFORM_90) &&
!(transform & WL_OUTPUT_TRANSFORM_FLIPPED)) {
transform ^= WL_OUTPUT_TRANSFORM_180;
}
return transform;
}