wlroots/types/wlr_output.c

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#include <assert.h>
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#include <stdlib.h>
#include <string.h>
#include <tgmath.h>
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#include <wayland-server.h>
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#include <wlr/types/wlr_output.h>
#include <wlr/interfaces/wlr_output.h>
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#include <wlr/util/list.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) {
wl_output_send_geometry(resource, 0, 0, // TODO: get position from layout?
output->phys_width, output->phys_height, output->subpixel,
output->make, output->model, output->transform);
}
if (version >= WL_OUTPUT_MODE_SINCE_VERSION) {
for (size_t i = 0; i < output->modes->length; ++i) {
struct wlr_output_mode *mode = output->modes->items[i];
// TODO: mode->flags should just be preferred
uint32_t flags = mode->flags;
if (output->current_mode == mode) {
flags |= WL_OUTPUT_MODE_CURRENT;
}
wl_output_send_mode(resource, flags,
mode->width, mode->height, mode->refresh);
}
}
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);
}
}
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
};
static void wl_output_bind(struct wl_client *wl_client, void *_wlr_output,
uint32_t version, uint32_t id) {
struct wlr_output *wlr_output = _wlr_output;
assert(wl_client && wlr_output);
if (version > 3) {
wlr_log(L_ERROR, "Client requested unsupported wl_output version, disconnecting");
wl_client_destroy(wl_client);
return;
}
struct wl_resource *wl_resource = wl_resource_create(
wl_client, &wl_output_interface, version, id);
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) {
struct wl_global *wl_global = wl_global_create(display,
&wl_output_interface, 3, wlr_output, wl_output_bind);
wlr_output->wl_global = wl_global;
wl_list_init(&wlr_output->wl_resources);
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return wl_global;
}
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static const float transforms[][4] = {
[WL_OUTPUT_TRANSFORM_NORMAL] = {
1.0f, 0.0f,
0.0f, -1.0f,
},
[WL_OUTPUT_TRANSFORM_90] = {
0.0f, -1.0f,
-1.0f, 0.0f,
},
[WL_OUTPUT_TRANSFORM_180] = {
-1.0f, 0.0f,
0.0f, 1.0f,
},
[WL_OUTPUT_TRANSFORM_270] = {
0.0f, 1.0f,
1.0f, 0.0f,
},
[WL_OUTPUT_TRANSFORM_FLIPPED] = {
-1.0f, 0.0f,
0.0f, -1.0f,
},
[WL_OUTPUT_TRANSFORM_FLIPPED_90] = {
0.0f, 1.0f,
-1.0f, 0.0f,
},
[WL_OUTPUT_TRANSFORM_FLIPPED_180] = {
1.0f, 0.0f,
0.0f, 1.0f,
},
[WL_OUTPUT_TRANSFORM_FLIPPED_270] = {
0.0f, -1.0f,
1.0f, 0.0f,
},
};
// Equivilent to glOrtho(0, width, 0, height, 1, -1) with the transform applied
static void set_matrix(float mat[static 16], int32_t width, int32_t height,
enum wl_output_transform transform) {
memset(mat, 0, sizeof(*mat) * 16);
const float *t = transforms[transform];
float x = 2.0f / width;
float y = 2.0f / height;
// Rotation + relection
mat[0] = x * t[0];
mat[1] = x * t[1];
mat[4] = y * t[2];
mat[5] = y * t[3];
// Translation
mat[3] = -copysign(1.0f, mat[0] + mat[1]);
mat[7] = -copysign(1.0f, mat[4] + mat[5]);
// Identity
mat[10] = 1.0f;
mat[15] = 1.0f;
}
void wlr_output_update_matrix(struct wlr_output *output) {
set_matrix(output->transform_matrix, output->width, output->height, output->transform);
}
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struct wlr_output *wlr_output_create(struct wlr_output_impl *impl,
struct wlr_output_state *state) {
struct wlr_output *output = calloc(1, sizeof(struct wlr_output));
output->impl = impl;
output->state = state;
output->modes = list_create();
output->transform = WL_OUTPUT_TRANSFORM_NORMAL;
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wl_signal_init(&output->events.frame);
wl_signal_init(&output->events.resolution);
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return output;
}
void wlr_output_enable(struct wlr_output *output, bool enable) {
output->impl->enable(output->state, enable);
}
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->state, mode);
if (result) {
wlr_output_update_matrix(output);
}
return result;
}
void wlr_output_transform(struct wlr_output *output,
enum wl_output_transform transform) {
wlr_output_update_matrix(output);
output->impl->transform(output->state, transform);
}
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bool wlr_output_set_cursor(struct wlr_output *output,
const uint8_t *buf, int32_t stride, uint32_t width, uint32_t height) {
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if (output->impl->set_cursor && output->impl->set_cursor(output->state, buf,
stride, width, height)) {
output->cursor.is_sw = false;
return true;
}
wlr_log(L_INFO, "Falling back to software cursor");
output->cursor.is_sw = true;
output->cursor.width = width;
output->cursor.height = height;
if (!output->cursor.renderer) {
output->cursor.renderer = wlr_gles2_renderer_init();
}
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if (!output->cursor.texture) {
output->cursor.texture = wlr_render_surface_init(output->cursor.renderer);
}
wlr_surface_attach_pixels(output->cursor.texture, GL_RGBA,
stride, width, height, buf);
return true;
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}
bool wlr_output_move_cursor(struct wlr_output *output, int x, int y) {
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output->cursor.x = x;
output->cursor.y = y;
if (output->cursor.is_sw) {
return true;
}
if (!output->impl->move_cursor) {
return false;
}
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return output->impl->move_cursor(output->state, x, y);
}
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void wlr_output_destroy(struct wlr_output *output) {
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if (!output) return;
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output->impl->destroy(output->state);
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for (size_t i = 0; output->modes && i < output->modes->length; ++i) {
free(output->modes->items[i]);
}
list_free(output->modes);
free(output);
}
void wlr_output_effective_resolution(struct wlr_output *output,
int *width, int *height) {
// TODO: Scale factor
if (output->transform % 2 == 1) {
*width = output->height;
*height = output->width;
} else {
*width = output->width;
*height = output->height;
}
}
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void wlr_output_make_current(struct wlr_output *output) {
output->impl->make_current(output->state);
}
void wlr_output_swap_buffers(struct wlr_output *output) {
if (output->cursor.is_sw) {
float matrix[16];
wlr_surface_get_matrix(output->cursor.texture, &matrix, &output->transform_matrix,
output->cursor.x, output->cursor.y);
wlr_render_with_matrix(output->cursor.renderer, output->cursor.texture, &matrix);
}
output->impl->swap_buffers(output->state);
}