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433 lines
10 KiB
433 lines
10 KiB
/*
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* Copyright © 2010-2011 Benjamin Franzke
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* Copyright © 2012 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial
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* portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "config.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 <sys/time.h>
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#include <stdbool.h>
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#include <libweston/libweston.h>
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#include <libweston/backend-headless.h>
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#include "shared/helpers.h"
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#include "linux-explicit-synchronization.h"
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#include "pixman-renderer.h"
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#include "presentation-time-server-protocol.h"
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#include <libweston/windowed-output-api.h>
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enum headless_renderer_type {
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HEADLESS_NOOP,
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HEADLESS_PIXMAN,
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};
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struct headless_backend {
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struct weston_backend base;
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struct weston_compositor *compositor;
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struct weston_seat fake_seat;
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enum headless_renderer_type renderer_type;
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};
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struct headless_head {
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struct weston_head base;
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};
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struct headless_output {
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struct weston_output base;
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struct weston_mode mode;
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struct wl_event_source *finish_frame_timer;
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uint32_t *image_buf;
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pixman_image_t *image;
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};
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static inline struct headless_head *
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to_headless_head(struct weston_head *base)
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{
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return container_of(base, struct headless_head, base);
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}
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static inline struct headless_output *
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to_headless_output(struct weston_output *base)
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{
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return container_of(base, struct headless_output, base);
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}
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static inline struct headless_backend *
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to_headless_backend(struct weston_compositor *base)
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{
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return container_of(base->backend, struct headless_backend, base);
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}
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static int
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headless_output_start_repaint_loop(struct weston_output *output)
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{
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struct timespec ts;
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weston_compositor_read_presentation_clock(output->compositor, &ts);
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weston_output_finish_frame(output, &ts, WP_PRESENTATION_FEEDBACK_INVALID);
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return 0;
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}
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static int
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finish_frame_handler(void *data)
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{
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struct headless_output *output = data;
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struct timespec ts;
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weston_compositor_read_presentation_clock(output->base.compositor, &ts);
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weston_output_finish_frame(&output->base, &ts, 0);
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return 1;
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}
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static int
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headless_output_repaint(struct weston_output *output_base,
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pixman_region32_t *damage,
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void *repaint_data)
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{
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struct headless_output *output = to_headless_output(output_base);
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struct weston_compositor *ec = output->base.compositor;
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ec->renderer->repaint_output(&output->base, damage);
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pixman_region32_subtract(&ec->primary_plane.damage,
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&ec->primary_plane.damage, damage);
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wl_event_source_timer_update(output->finish_frame_timer, 16);
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return 0;
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}
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static void
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headless_output_disable_pixman(struct headless_output *output)
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{
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pixman_renderer_output_destroy(&output->base);
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pixman_image_unref(output->image);
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free(output->image_buf);
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}
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static int
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headless_output_disable(struct weston_output *base)
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{
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struct headless_output *output = to_headless_output(base);
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struct headless_backend *b = to_headless_backend(base->compositor);
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if (!output->base.enabled)
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return 0;
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wl_event_source_remove(output->finish_frame_timer);
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switch (b->renderer_type) {
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case HEADLESS_PIXMAN:
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headless_output_disable_pixman(output);
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break;
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case HEADLESS_NOOP:
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break;
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}
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return 0;
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}
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static void
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headless_output_destroy(struct weston_output *base)
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{
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struct headless_output *output = to_headless_output(base);
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headless_output_disable(&output->base);
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weston_output_release(&output->base);
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free(output);
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}
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static int
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headless_output_enable_pixman(struct headless_output *output)
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{
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output->image_buf = malloc(output->base.current_mode->width *
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output->base.current_mode->height * 4);
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if (!output->image_buf)
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return -1;
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output->image = pixman_image_create_bits(PIXMAN_x8r8g8b8,
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output->base.current_mode->width,
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output->base.current_mode->height,
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output->image_buf,
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output->base.current_mode->width * 4);
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if (pixman_renderer_output_create(&output->base,
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PIXMAN_RENDERER_OUTPUT_USE_SHADOW) < 0)
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goto err_renderer;
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pixman_renderer_output_set_buffer(&output->base, output->image);
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return 0;
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err_renderer:
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pixman_image_unref(output->image);
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free(output->image_buf);
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return -1;
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}
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static int
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headless_output_enable(struct weston_output *base)
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{
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struct headless_output *output = to_headless_output(base);
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struct headless_backend *b = to_headless_backend(base->compositor);
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struct wl_event_loop *loop;
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int ret = 0;
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loop = wl_display_get_event_loop(b->compositor->wl_display);
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output->finish_frame_timer =
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wl_event_loop_add_timer(loop, finish_frame_handler, output);
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switch (b->renderer_type) {
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case HEADLESS_PIXMAN:
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ret = headless_output_enable_pixman(output);
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break;
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case HEADLESS_NOOP:
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break;
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}
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if (ret < 0) {
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wl_event_source_remove(output->finish_frame_timer);
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return -1;
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}
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return 0;
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}
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static int
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headless_output_set_size(struct weston_output *base,
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int width, int height)
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{
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struct headless_output *output = to_headless_output(base);
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struct weston_head *head;
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int output_width, output_height;
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/* We can only be called once. */
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assert(!output->base.current_mode);
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/* Make sure we have scale set. */
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assert(output->base.scale);
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wl_list_for_each(head, &output->base.head_list, output_link) {
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weston_head_set_monitor_strings(head, "weston", "headless",
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NULL);
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/* XXX: Calculate proper size. */
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weston_head_set_physical_size(head, width, height);
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}
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output_width = width * output->base.scale;
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output_height = height * output->base.scale;
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output->mode.flags =
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WL_OUTPUT_MODE_CURRENT | WL_OUTPUT_MODE_PREFERRED;
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output->mode.width = output_width;
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output->mode.height = output_height;
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output->mode.refresh = 60000;
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wl_list_insert(&output->base.mode_list, &output->mode.link);
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output->base.current_mode = &output->mode;
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output->base.start_repaint_loop = headless_output_start_repaint_loop;
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output->base.repaint = headless_output_repaint;
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output->base.assign_planes = NULL;
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output->base.set_backlight = NULL;
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output->base.set_dpms = NULL;
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output->base.switch_mode = NULL;
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return 0;
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}
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static struct weston_output *
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headless_output_create(struct weston_compositor *compositor, const char *name)
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{
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struct headless_output *output;
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/* name can't be NULL. */
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assert(name);
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output = zalloc(sizeof *output);
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if (!output)
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return NULL;
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weston_output_init(&output->base, compositor, name);
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output->base.destroy = headless_output_destroy;
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output->base.disable = headless_output_disable;
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output->base.enable = headless_output_enable;
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output->base.attach_head = NULL;
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weston_compositor_add_pending_output(&output->base, compositor);
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return &output->base;
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}
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static int
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headless_head_create(struct weston_compositor *compositor,
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const char *name)
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{
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struct headless_head *head;
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/* name can't be NULL. */
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assert(name);
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head = zalloc(sizeof *head);
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if (head == NULL)
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return -1;
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weston_head_init(&head->base, name);
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weston_head_set_connection_status(&head->base, true);
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/* Ideally all attributes of the head would be set here, so that the
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* user has all the information when deciding to create outputs.
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* We do not have those until set_size() time through.
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*/
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weston_compositor_add_head(compositor, &head->base);
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return 0;
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}
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static void
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headless_head_destroy(struct headless_head *head)
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{
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weston_head_release(&head->base);
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free(head);
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}
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static void
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headless_destroy(struct weston_compositor *ec)
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{
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struct headless_backend *b = to_headless_backend(ec);
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struct weston_head *base, *next;
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weston_compositor_shutdown(ec);
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wl_list_for_each_safe(base, next, &ec->head_list, compositor_link)
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headless_head_destroy(to_headless_head(base));
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free(b);
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}
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static const struct weston_windowed_output_api api = {
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headless_output_set_size,
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headless_head_create,
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};
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static struct headless_backend *
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headless_backend_create(struct weston_compositor *compositor,
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struct weston_headless_backend_config *config)
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{
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struct headless_backend *b;
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int ret;
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b = zalloc(sizeof *b);
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if (b == NULL)
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return NULL;
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b->compositor = compositor;
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compositor->backend = &b->base;
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if (weston_compositor_set_presentation_clock_software(compositor) < 0)
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goto err_free;
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b->base.destroy = headless_destroy;
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b->base.create_output = headless_output_create;
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if (config->use_pixman)
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b->renderer_type = HEADLESS_PIXMAN;
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else
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b->renderer_type = HEADLESS_NOOP;
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switch (b->renderer_type) {
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case HEADLESS_PIXMAN:
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ret = pixman_renderer_init(compositor);
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break;
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case HEADLESS_NOOP:
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ret = noop_renderer_init(compositor);
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break;
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}
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if (ret < 0)
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goto err_input;
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/* Support zwp_linux_explicit_synchronization_unstable_v1 to enable
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* testing. */
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if (linux_explicit_synchronization_setup(compositor) < 0)
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goto err_input;
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ret = weston_plugin_api_register(compositor, WESTON_WINDOWED_OUTPUT_API_NAME,
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&api, sizeof(api));
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if (ret < 0) {
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weston_log("Failed to register output API.\n");
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goto err_input;
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}
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return b;
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err_input:
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weston_compositor_shutdown(compositor);
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err_free:
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free(b);
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return NULL;
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}
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static void
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config_init_to_defaults(struct weston_headless_backend_config *config)
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{
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}
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WL_EXPORT int
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weston_backend_init(struct weston_compositor *compositor,
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struct weston_backend_config *config_base)
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{
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struct headless_backend *b;
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struct weston_headless_backend_config config = {{ 0, }};
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if (config_base == NULL ||
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config_base->struct_version != WESTON_HEADLESS_BACKEND_CONFIG_VERSION ||
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config_base->struct_size > sizeof(struct weston_headless_backend_config)) {
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weston_log("headless backend config structure is invalid\n");
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return -1;
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}
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config_init_to_defaults(&config);
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memcpy(&config, config_base, config_base->struct_size);
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b = headless_backend_create(compositor, &config);
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if (b == NULL)
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return -1;
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return 0;
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}
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