weston/libweston/compositor-headless.c
Quentin Glidic 23e1d6f176
libweston: Properly namespace backends entrypoint
This prevents loading a backend as a simple module. This will avoid
messing up with backends when we will introduce libweston common
modules.

Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>
Reviewed-by: Daniel Stone <daniels@collabora.com>
2017-01-17 18:24:49 +01:00

341 lines
8.5 KiB
C

/*
* Copyright © 2010-2011 Benjamin Franzke
* Copyright © 2012 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial
* portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "config.h"
#include <assert.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <sys/time.h>
#include <stdbool.h>
#include "compositor.h"
#include "compositor-headless.h"
#include "shared/helpers.h"
#include "pixman-renderer.h"
#include "presentation-time-server-protocol.h"
#include "windowed-output-api.h"
struct headless_backend {
struct weston_backend base;
struct weston_compositor *compositor;
struct weston_seat fake_seat;
bool use_pixman;
};
struct headless_output {
struct weston_output base;
struct weston_mode mode;
struct wl_event_source *finish_frame_timer;
uint32_t *image_buf;
pixman_image_t *image;
};
static inline struct headless_output *
to_headless_output(struct weston_output *base)
{
return container_of(base, struct headless_output, base);
}
static inline struct headless_backend *
to_headless_backend(struct weston_compositor *base)
{
return container_of(base->backend, struct headless_backend, base);
}
static void
headless_output_start_repaint_loop(struct weston_output *output)
{
struct timespec ts;
weston_compositor_read_presentation_clock(output->compositor, &ts);
weston_output_finish_frame(output, &ts, WP_PRESENTATION_FEEDBACK_INVALID);
}
static int
finish_frame_handler(void *data)
{
struct headless_output *output = data;
struct timespec ts;
weston_compositor_read_presentation_clock(output->base.compositor, &ts);
weston_output_finish_frame(&output->base, &ts, 0);
return 1;
}
static int
headless_output_repaint(struct weston_output *output_base,
pixman_region32_t *damage)
{
struct headless_output *output = to_headless_output(output_base);
struct weston_compositor *ec = output->base.compositor;
ec->renderer->repaint_output(&output->base, damage);
pixman_region32_subtract(&ec->primary_plane.damage,
&ec->primary_plane.damage, damage);
wl_event_source_timer_update(output->finish_frame_timer, 16);
return 0;
}
static int
headless_output_disable(struct weston_output *base)
{
struct headless_output *output = to_headless_output(base);
struct headless_backend *b = to_headless_backend(base->compositor);
if (!output->base.enabled)
return 0;
wl_event_source_remove(output->finish_frame_timer);
if (b->use_pixman) {
pixman_renderer_output_destroy(&output->base);
pixman_image_unref(output->image);
free(output->image_buf);
}
return 0;
}
static void
headless_output_destroy(struct weston_output *base)
{
struct headless_output *output = to_headless_output(base);
headless_output_disable(&output->base);
weston_output_destroy(&output->base);
free(output);
}
static int
headless_output_enable(struct weston_output *base)
{
struct headless_output *output = to_headless_output(base);
struct headless_backend *b = to_headless_backend(base->compositor);
struct wl_event_loop *loop;
loop = wl_display_get_event_loop(b->compositor->wl_display);
output->finish_frame_timer =
wl_event_loop_add_timer(loop, finish_frame_handler, output);
if (b->use_pixman) {
output->image_buf = malloc(output->base.current_mode->width *
output->base.current_mode->height * 4);
if (!output->image_buf)
goto err_malloc;
output->image = pixman_image_create_bits(PIXMAN_x8r8g8b8,
output->base.current_mode->width,
output->base.current_mode->height,
output->image_buf,
output->base.current_mode->width * 4);
if (pixman_renderer_output_create(&output->base) < 0)
goto err_renderer;
pixman_renderer_output_set_buffer(&output->base,
output->image);
}
return 0;
err_renderer:
pixman_image_unref(output->image);
free(output->image_buf);
err_malloc:
wl_event_source_remove(output->finish_frame_timer);
return -1;
}
static int
headless_output_set_size(struct weston_output *base,
int width, int height)
{
struct headless_output *output = to_headless_output(base);
int output_width, output_height;
/* We can only be called once. */
assert(!output->base.current_mode);
/* Make sure we have scale set. */
assert(output->base.scale);
output_width = width * output->base.scale;
output_height = height * output->base.scale;
output->mode.flags =
WL_OUTPUT_MODE_CURRENT | WL_OUTPUT_MODE_PREFERRED;
output->mode.width = output_width;
output->mode.height = output_height;
output->mode.refresh = 60000;
wl_list_init(&output->base.mode_list);
wl_list_insert(&output->base.mode_list, &output->mode.link);
output->base.current_mode = &output->mode;
output->base.make = "weston";
output->base.model = "headless";
/* XXX: Calculate proper size. */
output->base.mm_width = width;
output->base.mm_height = height;
output->base.start_repaint_loop = headless_output_start_repaint_loop;
output->base.repaint = headless_output_repaint;
output->base.assign_planes = NULL;
output->base.set_backlight = NULL;
output->base.set_dpms = NULL;
output->base.switch_mode = NULL;
return 0;
}
static int
headless_output_create(struct weston_compositor *compositor,
const char *name)
{
struct headless_output *output;
/* name can't be NULL. */
assert(name);
output = zalloc(sizeof *output);
if (output == NULL)
return -1;
output->base.name = strdup(name);
output->base.destroy = headless_output_destroy;
output->base.disable = headless_output_disable;
output->base.enable = headless_output_enable;
weston_output_init(&output->base, compositor);
weston_compositor_add_pending_output(&output->base, compositor);
return 0;
}
static void
headless_restore(struct weston_compositor *ec)
{
}
static void
headless_destroy(struct weston_compositor *ec)
{
struct headless_backend *b = to_headless_backend(ec);
weston_compositor_shutdown(ec);
free(b);
}
static const struct weston_windowed_output_api api = {
headless_output_set_size,
headless_output_create,
};
static struct headless_backend *
headless_backend_create(struct weston_compositor *compositor,
struct weston_headless_backend_config *config)
{
struct headless_backend *b;
int ret;
b = zalloc(sizeof *b);
if (b == NULL)
return NULL;
b->compositor = compositor;
if (weston_compositor_set_presentation_clock_software(compositor) < 0)
goto err_free;
b->base.destroy = headless_destroy;
b->base.restore = headless_restore;
b->use_pixman = config->use_pixman;
if (b->use_pixman) {
pixman_renderer_init(compositor);
}
if (!b->use_pixman && noop_renderer_init(compositor) < 0)
goto err_input;
compositor->backend = &b->base;
ret = weston_plugin_api_register(compositor, WESTON_WINDOWED_OUTPUT_API_NAME,
&api, sizeof(api));
if (ret < 0) {
weston_log("Failed to register output API.\n");
goto err_input;
}
return b;
err_input:
weston_compositor_shutdown(compositor);
err_free:
free(b);
return NULL;
}
static void
config_init_to_defaults(struct weston_headless_backend_config *config)
{
}
WL_EXPORT int
weston_backend_init(struct weston_compositor *compositor,
struct weston_backend_config *config_base)
{
struct headless_backend *b;
struct weston_headless_backend_config config = {{ 0, }};
if (config_base == NULL ||
config_base->struct_version != WESTON_HEADLESS_BACKEND_CONFIG_VERSION ||
config_base->struct_size > sizeof(struct weston_headless_backend_config)) {
weston_log("headless backend config structure is invalid\n");
return -1;
}
config_init_to_defaults(&config);
memcpy(&config, config_base, config_base->struct_size);
b = headless_backend_create(compositor, &config);
if (b == NULL)
return -1;
return 0;
}