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/*
* 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 <drm_fourcc.h>
#include <libweston/libweston.h>
#include <libweston/backend-headless.h>
#include "shared/helpers.h"
#include "linux-explicit-synchronization.h"
#include "pixman-renderer.h"
#include "renderer-gl/gl-renderer.h"
#include "shared/weston-egl-ext.h"
#include "linux-dmabuf.h"
#include "presentation-time-server-protocol.h"
#include <libweston/windowed-output-api.h>
enum headless_renderer_type {
HEADLESS_NOOP,
HEADLESS_PIXMAN,
HEADLESS_GL,
};
struct headless_backend {
struct weston_backend base;
struct weston_compositor *compositor;
struct weston_seat fake_seat;
enum headless_renderer_type renderer_type;
struct gl_renderer_interface *glri;
};
struct headless_head {
struct weston_head base;
};
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 const uint32_t headless_formats[] = {
DRM_FORMAT_XRGB8888,
DRM_FORMAT_ARGB8888,
};
static inline struct headless_head *
to_headless_head(struct weston_head *base)
{
return container_of(base, struct headless_head, base);
}
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 int
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);
return 0;
}
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,
void *repaint_data)
{
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 void
headless_output_disable_gl(struct headless_output *output)
{
struct weston_compositor *compositor = output->base.compositor;
struct headless_backend *b = to_headless_backend(compositor);
b->glri->output_destroy(&output->base);
}
static void
headless_output_disable_pixman(struct headless_output *output)
{
pixman_renderer_output_destroy(&output->base);
pixman_image_unref(output->image);
free(output->image_buf);
}
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);
switch (b->renderer_type) {
case HEADLESS_GL:
headless_output_disable_gl(output);
break;
case HEADLESS_PIXMAN:
headless_output_disable_pixman(output);
break;
case HEADLESS_NOOP:
break;
}
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_release(&output->base);
free(output);
}
static int
headless_output_enable_gl(struct headless_output *output)
{
struct weston_compositor *compositor = output->base.compositor;
struct headless_backend *b = to_headless_backend(compositor);
const struct gl_renderer_pbuffer_options options = {
.width = output->base.current_mode->width,
.height = output->base.current_mode->height,
.drm_formats = headless_formats,
.drm_formats_count = ARRAY_LENGTH(headless_formats),
};
if (b->glri->output_pbuffer_create(&output->base, &options) < 0) {
weston_log("failed to create gl renderer output state\n");
return -1;
}
return 0;
}
static int
headless_output_enable_pixman(struct headless_output *output)
{
output->image_buf = malloc(output->base.current_mode->width *
output->base.current_mode->height * 4);
if (!output->image_buf)
return -1;
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,
PIXMAN_RENDERER_OUTPUT_USE_SHADOW) < 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);
return -1;
}
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;
int ret = 0;
loop = wl_display_get_event_loop(b->compositor->wl_display);
output->finish_frame_timer =
wl_event_loop_add_timer(loop, finish_frame_handler, output);
switch (b->renderer_type) {
case HEADLESS_GL:
ret = headless_output_enable_gl(output);
break;
case HEADLESS_PIXMAN:
ret = headless_output_enable_pixman(output);
break;
case HEADLESS_NOOP:
break;
}
if (ret < 0) {
wl_event_source_remove(output->finish_frame_timer);
return -1;
}
return 0;
}
static int
headless_output_set_size(struct weston_output *base,
int width, int height)
{
struct headless_output *output = to_headless_output(base);
struct weston_head *head;
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);
wl_list_for_each(head, &output->base.head_list, output_link) {
weston_head_set_monitor_strings(head, "weston", "headless",
NULL);
/* XXX: Calculate proper size. */
weston_head_set_physical_size(head, width, height);
}
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_insert(&output->base.mode_list, &output->mode.link);
output->base.current_mode = &output->mode;
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 struct weston_output *
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)
return NULL;
weston_output_init(&output->base, compositor, name);
output->base.destroy = headless_output_destroy;
output->base.disable = headless_output_disable;
output->base.enable = headless_output_enable;
output->base.attach_head = NULL;
weston_compositor_add_pending_output(&output->base, compositor);
return &output->base;
}
static int
headless_head_create(struct weston_compositor *compositor,
const char *name)
{
struct headless_head *head;
/* name can't be NULL. */
assert(name);
head = zalloc(sizeof *head);
if (head == NULL)
return -1;
weston_head_init(&head->base, name);
weston_head_set_connection_status(&head->base, true);
/* Ideally all attributes of the head would be set here, so that the
* user has all the information when deciding to create outputs.
* We do not have those until set_size() time through.
*/
weston_compositor_add_head(compositor, &head->base);
return 0;
}
static void
headless_head_destroy(struct headless_head *head)
{
weston_head_release(&head->base);
free(head);
}
static void
headless_destroy(struct weston_compositor *ec)
{
struct headless_backend *b = to_headless_backend(ec);
struct weston_head *base, *next;
weston_compositor_shutdown(ec);
wl_list_for_each_safe(base, next, &ec->head_list, compositor_link)
headless_head_destroy(to_headless_head(base));
free(b);
}
static int
headless_gl_renderer_init(struct headless_backend *b)
{
const struct gl_renderer_display_options options = {
.egl_platform = EGL_PLATFORM_SURFACELESS_MESA,
.egl_native_display = EGL_DEFAULT_DISPLAY,
.egl_surface_type = EGL_PBUFFER_BIT,
.drm_formats = headless_formats,
.drm_formats_count = ARRAY_LENGTH(headless_formats),
};
b->glri = weston_load_module("gl-renderer.so", "gl_renderer_interface");
if (!b->glri)
return -1;
return b->glri->display_create(b->compositor, &options);
}
static const struct weston_windowed_output_api api = {
headless_output_set_size,
headless_head_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;
compositor->backend = &b->base;
if (weston_compositor_set_presentation_clock_software(compositor) < 0)
goto err_free;
b->base.destroy = headless_destroy;
b->base.create_output = headless_output_create;
if (config->use_pixman && config->use_gl) {
weston_log("Error: cannot use both Pixman *and* GL renderers.\n");
goto err_free;
}
if (config->use_gl)
b->renderer_type = HEADLESS_GL;
else if (config->use_pixman)
b->renderer_type = HEADLESS_PIXMAN;
else
b->renderer_type = HEADLESS_NOOP;
switch (b->renderer_type) {
case HEADLESS_GL:
ret = headless_gl_renderer_init(b);
break;
case HEADLESS_PIXMAN:
ret = pixman_renderer_init(compositor);
break;
case HEADLESS_NOOP:
ret = noop_renderer_init(compositor);
break;
default:
assert(0 && "invalid renderer type");
ret = -1;
}
if (ret < 0)
goto err_input;
if (compositor->renderer->import_dmabuf) {
if (linux_dmabuf_setup(compositor) < 0) {
weston_log("Error: dmabuf protocol setup failed.\n");
goto err_input;
}
}
/* Support zwp_linux_explicit_synchronization_unstable_v1 to enable
* testing. */
if (linux_explicit_synchronization_setup(compositor) < 0)
goto err_input;
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;
}