From ec2e64224b111febacf645cac56046cd831b56da Mon Sep 17 00:00:00 2001 From: Benjamin Franzke Date: Sat, 27 Nov 2010 19:04:12 +0100 Subject: [PATCH] Add wayland backend for compositor (nested) --- compositor/Makefile.am | 2 + compositor/compositor-wayland.c | 566 ++++++++++++++++++++++++++++++++++++++++ compositor/compositor.c | 24 +- compositor/compositor.h | 3 + 4 files changed, 589 insertions(+), 6 deletions(-) create mode 100644 compositor/compositor-wayland.c diff --git a/compositor/Makefile.am b/compositor/Makefile.am index f8f2307..0500614 100644 --- a/compositor/Makefile.am +++ b/compositor/Makefile.am @@ -9,6 +9,7 @@ AM_CPPFLAGS = -DDATADIR='"$(datadir)"' compositor_LDADD = \ $(top_builddir)/wayland/libwayland-server.la \ + $(top_builddir)/wayland/libwayland-client.la \ $(COMPOSITOR_LIBS) compositor_SOURCES = \ @@ -16,6 +17,7 @@ compositor_SOURCES = \ compositor.h \ compositor-drm.c \ compositor-x11.c \ + compositor-wayland.c \ screenshooter.c \ screenshooter-protocol.c \ screenshooter-server-protocol.h \ diff --git a/compositor/compositor-wayland.c b/compositor/compositor-wayland.c new file mode 100644 index 0000000..85010b6 --- /dev/null +++ b/compositor/compositor-wayland.c @@ -0,0 +1,566 @@ +/* + * Copyright © 2010 Benjamin Franzke + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ + +#ifdef HAVE_CONFIG_H +#include +#endif + +#include +#define _GNU_SOURCE +#include +#include +#include +#include +#include +#include + +#include "wayland-client.h" + +#define GL_GLEXT_PROTOTYPES +#define EGL_EGLEXT_PROTOTYPES +#include +#include +#include +#include + +#include "compositor.h" + +struct wayland_compositor { + struct wlsc_compositor base; + + struct { + struct wl_display *display; + struct wl_compositor *compositor; + struct wl_shell *shell; + struct wl_drm *drm; + struct wl_output *output; + + struct { + int32_t x, y, width, height; + } screen_allocation; + + char *device_name; + int authenticated; + + struct wl_event_source *wl_source; + uint32_t event_mask; + } parent; + + struct wl_list window_list; + struct wl_list input_list; +}; + +struct wayland_output { + struct wlsc_output base; + + struct { + struct wl_surface *surface; + struct wl_buffer *buffer[2]; + } parent; + EGLImageKHR image[2]; + GLuint rbo[2]; + uint32_t fb_id[2]; + uint32_t current; +}; + +struct wayland_input { + struct wayland_compositor *compositor; + struct wl_input_device *input_device; + struct wl_list link; +}; + +static int +wayland_input_create(struct wayland_compositor *c) +{ + struct wlsc_input_device *input; + + input = malloc(sizeof *input); + if (input == NULL) + return -1; + + memset(input, 0, sizeof *input); + wlsc_input_device_init(input, &c->base); + + c->base.input_device = input; + + return 0; +} + +static int +wayland_compositor_init_egl(struct wayland_compositor *c) +{ + EGLint major, minor; + const char *extensions; + drm_magic_t magic; + int fd; + static const EGLint context_attribs[] = { + EGL_CONTEXT_CLIENT_VERSION, 2, + EGL_NONE + }; + + fd = open(c->parent.device_name, O_RDWR); + if (fd < 0) { + fprintf(stderr, "drm open failed: %m\n"); + return -1; + } + + wlsc_drm_init(&c->base, fd, c->parent.device_name); + + if (drmGetMagic(fd, &magic)) { + fprintf(stderr, "DRI2: failed to get drm magic"); + return -1; + } + + wl_drm_authenticate(c->parent.drm, magic); + wl_display_iterate(c->parent.display, WL_DISPLAY_WRITABLE); + while (!c->parent.authenticated) + wl_display_iterate(c->parent.display, WL_DISPLAY_READABLE); + + c->base.display = eglGetDRMDisplayMESA(fd); + if (c->base.display == NULL) { + fprintf(stderr, "failed to create display\n"); + return -1; + } + + if (!eglInitialize(c->base.display, &major, &minor)) { + fprintf(stderr, "failed to initialize display\n"); + return -1; + } + + extensions = eglQueryString(c->base.display, EGL_EXTENSIONS); + if (!strstr(extensions, "EGL_KHR_surfaceless_opengl")) { + fprintf(stderr, "EGL_KHR_surfaceless_opengl not available\n"); + return -1; + } + + if (!eglBindAPI(EGL_OPENGL_ES_API)) { + fprintf(stderr, "failed to bind EGL_OPENGL_ES_API\n"); + return -1; + } + + c->base.context = eglCreateContext(c->base.display, NULL, + EGL_NO_CONTEXT, context_attribs); + if (c->base.context == NULL) { + fprintf(stderr, "failed to create context\n"); + return -1; + } + + if (!eglMakeCurrent(c->base.display, EGL_NO_SURFACE, + EGL_NO_SURFACE, c->base.context)) { + fprintf(stderr, "failed to make context current\n"); + return -1; + } + + return 0; +} + +static void +wayland_compositor_present(struct wlsc_compositor *base) +{ + struct wayland_compositor *c = (struct wayland_compositor *) base; + struct wayland_output *output; + struct timeval tv; + uint32_t msec; + + glFinish(); + wl_list_for_each(output, &base->output_list, base.link) { + output->current ^= 1; + + glFramebufferRenderbuffer(GL_FRAMEBUFFER, + GL_COLOR_ATTACHMENT0, + GL_RENDERBUFFER, + output->rbo[output->current]); + + wl_surface_attach(output->parent.surface, + output->parent.buffer[output->current ^ 1]); + wl_surface_damage(output->parent.surface, 0, 0, + output->base.width, output->base.height); + } + + + gettimeofday(&tv, NULL); + msec = tv.tv_sec * 1000 + tv.tv_usec / 1000; + wlsc_compositor_finish_frame(&c->base, msec); +} + +static int +wayland_authenticate(struct wlsc_compositor *ec, uint32_t id) +{ + struct wayland_compositor *c = (struct wayland_compositor *) ec; + + wl_drm_authenticate(c->parent.drm, id); + /* FIXME: recv drm_authenticated event from parent? */ + wl_display_iterate(c->parent.display, WL_DISPLAY_WRITABLE); + + return 0; +} + +static int +wayland_compositor_create_output(struct wayland_compositor *c, + int width, int height) +{ + struct wayland_output *output; + struct wl_visual *visual; + int i; + EGLint name, stride, attribs[] = { + EGL_WIDTH, 0, + EGL_HEIGHT, 0, + EGL_DRM_BUFFER_FORMAT_MESA, EGL_DRM_BUFFER_FORMAT_ARGB32_MESA, + EGL_DRM_BUFFER_USE_MESA, EGL_DRM_BUFFER_USE_SCANOUT_MESA, + EGL_NONE + }; + + output = malloc(sizeof *output); + if (output == NULL) + return -1; + memset(output, 0, sizeof *output); + + wlsc_output_init(&output->base, &c->base, 0, 0, width, height); + output->parent.surface = + wl_compositor_create_surface(c->parent.compositor); + wl_surface_set_user_data(output->parent.surface, output); + + glGenRenderbuffers(2, output->rbo); + visual = wl_display_get_premultiplied_argb_visual(c->parent.display); + for (i = 0; i < 2; i++) { + glBindRenderbuffer(GL_RENDERBUFFER, output->rbo[i]); + + attribs[1] = width; + attribs[3] = height; + output->image[i] = + eglCreateDRMImageMESA(c->base.display, attribs); + glEGLImageTargetRenderbufferStorageOES(GL_RENDERBUFFER, + output->image[i]); + eglExportDRMImageMESA(c->base.display, output->image[i], + &name, NULL, &stride); + output->parent.buffer[i] = + wl_drm_create_buffer(c->parent.drm, name, + width, height, + stride, visual); + } + + output->current = 0; + glFramebufferRenderbuffer(GL_FRAMEBUFFER, + GL_COLOR_ATTACHMENT0, + GL_RENDERBUFFER, + output->rbo[output->current]); + + wl_surface_attach(output->parent.surface, + output->parent.buffer[output->current]); + wl_surface_map(output->parent.surface, + output->base.x, output->base.y, + output->base.width, output->base.height); + + glClearColor(0, 0, 0, 0.5); + + wl_list_insert(c->base.output_list.prev, &output->base.link); + + return 0; +} + +static struct wl_buffer * +create_invisible_pointer(struct wayland_compositor *c) +{ + struct wlsc_drm_buffer *wlsc_buffer; + struct wl_buffer *buffer; + int name, stride; + struct wl_visual *visual; + GLuint texture; + const int width = 1, height = 1; + const GLubyte data[] = { 0, 0, 0, 0 }; + + glGenTextures(1, &texture); + glBindTexture(GL_TEXTURE_2D, texture); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); + + visual = wl_display_get_premultiplied_argb_visual(c->parent.display); + wlsc_buffer = wlsc_drm_buffer_create(&c->base, width, height, visual); + + glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, wlsc_buffer->image); + glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width, height, + GL_RGBA, GL_UNSIGNED_BYTE, data); + + eglExportDRMImageMESA(c->base.display, wlsc_buffer->image, + &name, NULL, &stride); + + buffer = wl_drm_create_buffer(c->parent.drm, name, + width, height, + stride, visual); + return buffer; +} + +/* Events received from the wayland-server this compositor is client of: */ + +/* parent output interface */ +static void +display_handle_geometry(void *data, + struct wl_output *output, + int32_t width, int32_t height) +{ + struct wayland_compositor *c = data; + + c->parent.screen_allocation.x = 0; + c->parent.screen_allocation.y = 0; + c->parent.screen_allocation.width = width; + c->parent.screen_allocation.height = height; +} + +static const struct wl_output_listener output_listener = { + display_handle_geometry, +}; + +/* parent shell interface */ +static void +handle_configure(void *data, struct wl_shell *shell, + uint32_t time, uint32_t edges, + struct wl_surface *surface, + int32_t x, int32_t y, int32_t width, int32_t height) +{ +#if 0 + struct output *output = wl_surface_get_user_data(surface); + + /* FIXME: add resize? */ +#endif +} + +static const struct wl_shell_listener shell_listener = { + handle_configure, +}; + +/* parent drm interface */ +static void +drm_handle_device(void *data, struct wl_drm *drm, const char *device) +{ + struct wayland_compositor *c = data; + + c->parent.device_name = strdup(device); +} + +static void drm_handle_authenticated(void *data, struct wl_drm *drm) +{ + struct wayland_compositor *c = data; + + c->parent.authenticated = 1; +} + +static const struct wl_drm_listener drm_listener = { + drm_handle_device, + drm_handle_authenticated +}; + +/* parent input interface */ +static void +input_handle_motion(void *data, struct wl_input_device *input_device, + uint32_t time, + int32_t x, int32_t y, int32_t sx, int32_t sy) +{ + struct wayland_input *input = data; + struct wayland_compositor *c = input->compositor; + + notify_motion(c->base.input_device, time, sx, sy); +} + +static void +input_handle_button(void *data, + struct wl_input_device *input_device, + uint32_t time, uint32_t button, uint32_t state) +{ + struct wayland_input *input = data; + struct wayland_compositor *c = input->compositor; + + notify_button(c->base.input_device, time, button, state); +} + +static void +input_handle_key(void *data, struct wl_input_device *input_device, + uint32_t time, uint32_t key, uint32_t state) +{ + struct wayland_input *input = data; + struct wayland_compositor *c = input->compositor; + + notify_key(c->base.input_device, time, key, state); +} + +static void +input_handle_pointer_focus(void *data, + struct wl_input_device *input_device, + uint32_t time, struct wl_surface *surface, + int32_t x, int32_t y, int32_t sx, int32_t sy) +{ + struct wayland_input *input = data; + struct wayland_compositor *c = input->compositor; + static struct wl_buffer *pntr_buffer = NULL; + + if (surface) { + c->base.focus = 1; + /* FIXME: extend protocol to allow hiding the cursor? */ + if (pntr_buffer == NULL) + pntr_buffer = create_invisible_pointer(c); + wl_input_device_attach(input_device, time, pntr_buffer, x, y); + } else { + /* FIXME. hide our own pointer */ + c->base.focus = 0; + } +} + +static void +input_handle_keyboard_focus(void *data, + struct wl_input_device *input_device, + uint32_t time, + struct wl_surface *surface, + struct wl_array *keys) +{ + /* FIXME: sth to be done here? */ +} + +static const struct wl_input_device_listener input_device_listener = { + input_handle_motion, + input_handle_button, + input_handle_key, + input_handle_pointer_focus, + input_handle_keyboard_focus, +}; + +static void +display_add_input(struct wayland_compositor *c, uint32_t id) +{ + struct wayland_input *input; + + input = malloc(sizeof *input); + if (input == NULL) + return; + + memset(input, 0, sizeof *input); + + input->compositor = c; + input->input_device = wl_input_device_create(c->parent.display, id); + wl_list_insert(c->input_list.prev, &input->link); + + wl_input_device_add_listener(input->input_device, + &input_device_listener, input); + wl_input_device_set_user_data(input->input_device, input); +} + +static void +display_handle_global(struct wl_display *display, uint32_t id, + const char *interface, uint32_t version, void *data) +{ + struct wayland_compositor *c = data; + + if (strcmp(interface, "compositor") == 0) { + c->parent.compositor = wl_compositor_create(display, id); + } else if (strcmp(interface, "output") == 0) { + c->parent.output = wl_output_create(display, id); + wl_output_add_listener(c->parent.output, &output_listener, c); + } else if (strcmp(interface, "input_device") == 0) { + display_add_input(c, id); + } else if (strcmp(interface, "shell") == 0) { + c->parent.shell = wl_shell_create(display, id); + wl_shell_add_listener(c->parent.shell, &shell_listener, c); + } else if (strcmp(interface, "drm") == 0) { + c->parent.drm = wl_drm_create(display, id); + wl_drm_add_listener(c->parent.drm, &drm_listener, c); + } +} + +static int +update_event_mask(uint32_t mask, void *data) +{ + struct wayland_compositor *c = data; + + c->parent.event_mask = mask; + if (c->parent.wl_source) + wl_event_source_fd_update(c->parent.wl_source, mask); + + return 0; +} + +static void +wayland_compositor_handle_event(int fd, uint32_t mask, void *data) +{ + struct wayland_compositor *c = data; + + if (mask & WL_EVENT_READABLE) + wl_display_iterate(c->parent.display, WL_DISPLAY_READABLE); + if (mask & WL_EVENT_WRITEABLE) + wl_display_iterate(c->parent.display, WL_DISPLAY_WRITABLE); +} + +struct wlsc_compositor * +wayland_compositor_create(struct wl_display *display, int width, int height) +{ + struct wayland_compositor *c; + struct wl_event_loop *loop; + int fd; + char *socket_name; + int socket_name_size; + + c = malloc(sizeof *c); + if (c == NULL) + return NULL; + + memset(c, 0, sizeof *c); + + socket_name_size = 1 + asprintf(&socket_name, "%c%s", '\0', + getenv("WAYLAND_DISPLAY")); + + c->parent.display = wl_display_connect(socket_name, socket_name_size); + free(socket_name); + + if (c->parent.display == NULL) { + fprintf(stderr, "failed to create display: %m\n"); + return NULL; + } + + wl_list_init(&c->input_list); + wl_display_add_global_listener(c->parent.display, + display_handle_global, c); + + wl_display_iterate(c->parent.display, WL_DISPLAY_READABLE); + + c->base.wl_display = display; + if (wayland_compositor_init_egl(c) < 0) + return NULL; + + /* Can't init base class until we have a current egl context */ + if (wlsc_compositor_init(&c->base, display) < 0) + return NULL; + + if (wayland_compositor_create_output(c, width, height) < 0) + return NULL; + + if (wayland_input_create(c) < 0) + return NULL; + + loop = wl_display_get_event_loop(c->base.wl_display); + + fd = wl_display_get_fd(c->parent.display, update_event_mask, c); + c->parent.wl_source = + wl_event_loop_add_fd(loop, fd, c->parent.event_mask, + wayland_compositor_handle_event, c); + if (c->parent.wl_source == NULL) + return NULL; + + c->base.authenticate = wayland_authenticate; + c->base.present = wayland_compositor_present; + + return &c->base; +} diff --git a/compositor/compositor.c b/compositor/compositor.c index ff24224..cbb0b6b 100644 --- a/compositor/compositor.c +++ b/compositor/compositor.c @@ -32,6 +32,11 @@ #include "wayland-server-protocol.h" #include "compositor.h" +/* The plan here is to generate a random anonymous socket name and + * advertise that through a service on the session dbus. + */ +static const char *option_socket_name = "wayland"; + static const char *option_background = "background.jpg"; static const char *option_geometry = "1024x640"; static int option_connector = 0; @@ -43,6 +48,8 @@ static const GOptionEntry option_entries[] = { &option_connector, "KMS connector" }, { "geometry", 'g', 0, G_OPTION_ARG_STRING, &option_geometry, "Geometry" }, + { "socket", 's', 0, G_OPTION_ARG_STRING, + &option_socket_name, "Socket Name" }, { NULL } }; @@ -1011,6 +1018,7 @@ input_device_attach(struct wl_client *client, return; if (device->pointer_focus == NULL) return; + if (device->pointer_focus->base.client != client && !(&device->pointer_focus->base == &wl_grab_surface && device->grab_surface->base.client == client)) @@ -1435,10 +1443,6 @@ wlsc_compositor_init(struct wlsc_compositor *ec, struct wl_display *display) return 0; } -/* The plan here is to generate a random anonymous socket name and - * advertise that through a service on the session dbus. - */ -static const char socket_name[] = "\0wayland"; int main(int argc, char *argv[]) { @@ -1447,6 +1451,8 @@ int main(int argc, char *argv[]) GError *error = NULL; GOptionContext *context; int width, height; + char *socket_name; + int socket_name_size; g_type_init(); /* GdkPixbuf needs this, it seems. */ @@ -1464,7 +1470,9 @@ int main(int argc, char *argv[]) display = wl_display_create(); - if (getenv("DISPLAY")) + if (getenv("WAYLAND_DISPLAY")) + ec = wayland_compositor_create(display, width, height); + else if (getenv("DISPLAY")) ec = x11_compositor_create(display, width, height); else ec = drm_compositor_create(display, option_connector); @@ -1474,10 +1482,14 @@ int main(int argc, char *argv[]) exit(EXIT_FAILURE); } - if (wl_display_add_socket(display, socket_name, sizeof socket_name)) { + socket_name_size = 1 + asprintf(&socket_name, "%c%s", '\0', + option_socket_name); + + if (wl_display_add_socket(display, socket_name, socket_name_size)) { fprintf(stderr, "failed to add socket: %m\n"); exit(EXIT_FAILURE); } + free(socket_name); wl_display_run(display); diff --git a/compositor/compositor.h b/compositor/compositor.h index 85535f3..921f137 100644 --- a/compositor/compositor.h +++ b/compositor/compositor.h @@ -234,6 +234,9 @@ x11_compositor_create(struct wl_display *display, int width, int height); struct wlsc_compositor * drm_compositor_create(struct wl_display *display, int connector); +struct wlsc_compositor * +wayland_compositor_create(struct wl_display *display, int width, int height); + void screenshooter_create(struct wlsc_compositor *ec); -- 2.7.4