Split native drm part of compositor out
diff --git a/compositor-drm.c b/compositor-drm.c
new file mode 100644
index 0000000..178941c
--- /dev/null
+++ b/compositor-drm.c
@@ -0,0 +1,594 @@
+/*
+ * Copyright © 2008-2010 Kristian Høgsberg
+ *
+ * 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.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#include <signal.h>
+#include <linux/vt.h>
+#include <linux/input.h>
+
+#define GL_GLEXT_PROTOTYPES
+#define EGL_EGLEXT_PROTOTYPES
+#include <GLES2/gl2.h>
+#include <GLES2/gl2ext.h>
+#include <EGL/egl.h>
+#include <EGL/eglext.h>
+
+#include "wayland.h"
+#include "wayland-protocol.h"
+#include "compositor.h"
+
+struct evdev_input_device {
+ struct wlsc_input_device *device;
+ struct wl_event_source *source;
+ int tool, new_x, new_y;
+ int base_x, base_y;
+ int fd;
+};
+
+static void evdev_input_device_data(int fd, uint32_t mask, void *data)
+{
+ struct evdev_input_device *device = data;
+ struct input_event ev[8], *e, *end;
+ int len, value, dx, dy, absolute_event;
+ int x, y;
+
+ dx = 0;
+ dy = 0;
+ absolute_event = 0;
+ x = device->device->x;
+ y = device->device->y;
+
+ len = read(fd, &ev, sizeof ev);
+ if (len < 0 || len % sizeof e[0] != 0) {
+ /* FIXME: handle error... reopen device? */;
+ return;
+ }
+
+ e = ev;
+ end = (void *) ev + len;
+ for (e = ev; e < end; e++) {
+ /* Get the signed value, earlier kernels had this as unsigned */
+ value = e->value;
+
+ switch (e->type) {
+ case EV_REL:
+ switch (e->code) {
+ case REL_X:
+ dx += value;
+ break;
+
+ case REL_Y:
+ dy += value;
+ break;
+ }
+ break;
+
+ case EV_ABS:
+ absolute_event = 1;
+ switch (e->code) {
+ case ABS_X:
+ if (device->new_x) {
+ device->base_x = x - value;
+ device->new_x = 0;
+ }
+ x = device->base_x + value;
+ break;
+ case ABS_Y:
+ if (device->new_y) {
+ device->base_y = y - value;
+ device->new_y = 0;
+ }
+ y = device->base_y + value;
+ break;
+ }
+ break;
+
+ case EV_KEY:
+ if (value == 2)
+ break;
+
+ switch (e->code) {
+ case BTN_TOUCH:
+ case BTN_TOOL_PEN:
+ case BTN_TOOL_RUBBER:
+ case BTN_TOOL_BRUSH:
+ case BTN_TOOL_PENCIL:
+ case BTN_TOOL_AIRBRUSH:
+ case BTN_TOOL_FINGER:
+ case BTN_TOOL_MOUSE:
+ case BTN_TOOL_LENS:
+ if (device->tool == 0 && value) {
+ device->new_x = 1;
+ device->new_y = 1;
+ }
+ device->tool = value ? e->code : 0;
+ break;
+
+ case BTN_LEFT:
+ case BTN_RIGHT:
+ case BTN_MIDDLE:
+ case BTN_SIDE:
+ case BTN_EXTRA:
+ case BTN_FORWARD:
+ case BTN_BACK:
+ case BTN_TASK:
+ notify_button(device->device, e->code, value);
+ break;
+
+ default:
+ notify_key(device->device, e->code, value);
+ break;
+ }
+ }
+ }
+
+ if (dx != 0 || dy != 0)
+ notify_motion(device->device, x + dx, y + dy);
+ if (absolute_event && device->tool)
+ notify_motion(device->device, x, y);
+}
+
+static struct evdev_input_device *
+evdev_input_device_create(struct wlsc_input_device *master,
+ struct wl_display *display, const char *path)
+{
+ struct evdev_input_device *device;
+ struct wl_event_loop *loop;
+
+ device = malloc(sizeof *device);
+ if (device == NULL)
+ return NULL;
+
+ device->tool = 1;
+ device->new_x = 1;
+ device->new_y = 1;
+ device->device = master;
+
+ device->fd = open(path, O_RDONLY);
+ if (device->fd < 0) {
+ free(device);
+ fprintf(stderr, "couldn't create pointer for %s: %m\n", path);
+ return NULL;
+ }
+
+ loop = wl_display_get_event_loop(display);
+ device->source = wl_event_loop_add_fd(loop, device->fd,
+ WL_EVENT_READABLE,
+ evdev_input_device_data, device);
+ if (device->source == NULL) {
+ close(device->fd);
+ free(device);
+ return NULL;
+ }
+
+ return device;
+}
+
+void
+wlsc_compositor_present_drm(struct wlsc_compositor *ec)
+{
+ struct wlsc_output *output;
+
+ wl_list_for_each(output, &ec->output_list, link) {
+ drmModePageFlip(ec->drm_fd, output->crtc_id,
+ output->fb_id[output->current ^ 1],
+ DRM_MODE_PAGE_FLIP_EVENT, output);
+ }
+}
+
+static void
+page_flip_handler(int fd, unsigned int frame,
+ unsigned int sec, unsigned int usec, void *data)
+{
+ struct wlsc_output *output = data;
+ struct wlsc_compositor *compositor = output->compositor;
+ uint32_t msecs;
+
+ msecs = sec * 1000 + usec / 1000;
+ wlsc_compositor_finish_frame(compositor, msecs);
+}
+
+static void
+on_drm_input(int fd, uint32_t mask, void *data)
+{
+ drmEventContext evctx;
+
+ memset(&evctx, 0, sizeof evctx);
+ evctx.version = DRM_EVENT_CONTEXT_VERSION;
+ evctx.page_flip_handler = page_flip_handler;
+ drmHandleEvent(fd, &evctx);
+}
+
+static int
+init_egl(struct wlsc_compositor *ec, struct udev_device *device)
+{
+ struct wl_event_loop *loop;
+ EGLint major, minor, count;
+ EGLConfig config;
+ PFNEGLGETTYPEDDISPLAYMESA get_typed_display_mesa;
+
+ static const EGLint config_attribs[] = {
+ EGL_SURFACE_TYPE, 0,
+ EGL_NO_SURFACE_CAPABLE_MESA, EGL_OPENGL_BIT,
+ EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT,
+ EGL_NONE
+ };
+
+ get_typed_display_mesa =
+ (PFNEGLGETTYPEDDISPLAYMESA) eglGetProcAddress("eglGetTypedDisplayMESA");
+ if (get_typed_display_mesa == NULL) {
+ fprintf(stderr, "eglGetTypedDisplayMESA() not found\n");
+ return -1;
+ }
+
+ ec->base.device = strdup(udev_device_get_devnode(device));
+ ec->drm_fd = open(ec->base.device, O_RDWR);
+ if (ec->drm_fd < 0) {
+ /* Probably permissions error */
+ fprintf(stderr, "couldn't open %s, skipping\n",
+ udev_device_get_devnode(device));
+ return -1;
+ }
+
+ ec->display = get_typed_display_mesa(EGL_DRM_DISPLAY_TYPE_MESA,
+ (void *) ec->drm_fd);
+ if (ec->display == NULL) {
+ fprintf(stderr, "failed to create display\n");
+ return -1;
+ }
+
+ if (!eglInitialize(ec->display, &major, &minor)) {
+ fprintf(stderr, "failed to initialize display\n");
+ return -1;
+ }
+
+ if (!eglChooseConfig(ec->display, config_attribs, &config, 1, &count) ||
+ count == 0) {
+ fprintf(stderr, "eglChooseConfig() failed\n");
+ return -1;
+ }
+
+ eglBindAPI(EGL_OPENGL_API);
+ ec->context = eglCreateContext(ec->display, config, EGL_NO_CONTEXT, NULL);
+ if (ec->context == NULL) {
+ fprintf(stderr, "failed to create context\n");
+ return -1;
+ }
+
+ if (!eglMakeCurrent(ec->display, EGL_NO_SURFACE, EGL_NO_SURFACE, ec->context)) {
+ fprintf(stderr, "failed to make context current\n");
+ return -1;
+ }
+
+ loop = wl_display_get_event_loop(ec->wl_display);
+ ec->drm_source =
+ wl_event_loop_add_fd(loop, ec->drm_fd,
+ WL_EVENT_READABLE, on_drm_input, ec);
+
+ return 0;
+}
+
+static drmModeModeInfo builtin_1024x768 = {
+ 63500, /* clock */
+ 1024, 1072, 1176, 1328, 0,
+ 768, 771, 775, 798, 0,
+ 59920,
+ DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC,
+ 0,
+ "1024x768"
+};
+
+static int
+create_output_for_connector(struct wlsc_compositor *ec,
+ drmModeRes *resources,
+ drmModeConnector *connector)
+{
+ struct wlsc_output *output;
+ drmModeEncoder *encoder;
+ drmModeModeInfo *mode;
+ int i, ret;
+ EGLint handle, stride, attribs[] = {
+ EGL_WIDTH, 0,
+ EGL_HEIGHT, 0,
+ EGL_IMAGE_FORMAT_MESA, EGL_IMAGE_FORMAT_ARGB8888_MESA,
+ EGL_IMAGE_USE_MESA, EGL_IMAGE_USE_SCANOUT_MESA,
+ EGL_NONE
+ };
+
+ output = malloc(sizeof *output);
+ if (output == NULL)
+ return -1;
+
+ if (connector->count_modes > 0)
+ mode = &connector->modes[0];
+ else
+ mode = &builtin_1024x768;
+
+ encoder = drmModeGetEncoder(ec->drm_fd, connector->encoders[0]);
+ if (encoder == NULL) {
+ fprintf(stderr, "No encoder for connector.\n");
+ return -1;
+ }
+
+ for (i = 0; i < resources->count_crtcs; i++) {
+ if (encoder->possible_crtcs & (1 << i))
+ break;
+ }
+ if (i == resources->count_crtcs) {
+ fprintf(stderr, "No usable crtc for encoder.\n");
+ return -1;
+ }
+
+ output->compositor = ec;
+ output->crtc_id = resources->crtcs[i];
+ output->connector_id = connector->connector_id;
+ output->mode = *mode;
+ output->x = 0;
+ output->y = 0;
+ output->width = mode->hdisplay;
+ output->height = mode->vdisplay;
+
+ drmModeFreeEncoder(encoder);
+
+ glGenRenderbuffers(2, output->rbo);
+ for (i = 0; i < 2; i++) {
+ glBindRenderbuffer(GL_RENDERBUFFER, output->rbo[i]);
+
+ attribs[1] = output->width;
+ attribs[3] = output->height;
+ output->image[i] = eglCreateDRMImageMESA(ec->display, attribs);
+ glEGLImageTargetRenderbufferStorageOES(GL_RENDERBUFFER, output->image[i]);
+ eglExportDRMImageMESA(ec->display, output->image[i], NULL, &handle, &stride);
+
+ ret = drmModeAddFB(ec->drm_fd, output->width, output->height,
+ 32, 32, stride, handle, &output->fb_id[i]);
+ if (ret) {
+ fprintf(stderr, "failed to add fb %d: %m\n", i);
+ return -1;
+ }
+ }
+
+ output->current = 0;
+ glFramebufferRenderbuffer(GL_FRAMEBUFFER,
+ GL_COLOR_ATTACHMENT0,
+ GL_RENDERBUFFER,
+ output->rbo[output->current]);
+ ret = drmModeSetCrtc(ec->drm_fd, output->crtc_id,
+ output->fb_id[output->current ^ 1], 0, 0,
+ &output->connector_id, 1, &output->mode);
+ if (ret) {
+ fprintf(stderr, "failed to set mode: %m\n");
+ return -1;
+ }
+
+ wl_list_insert(ec->output_list.prev, &output->link);
+
+ return 0;
+}
+
+static int
+create_outputs(struct wlsc_compositor *ec)
+{
+ drmModeConnector *connector;
+ drmModeRes *resources;
+ int i;
+
+ resources = drmModeGetResources(ec->drm_fd);
+ if (!resources) {
+ fprintf(stderr, "drmModeGetResources failed\n");
+ return -1;
+ }
+
+ for (i = 0; i < resources->count_connectors; i++) {
+ connector = drmModeGetConnector(ec->drm_fd, resources->connectors[i]);
+ if (connector == NULL)
+ continue;
+
+ if (connector->connection == DRM_MODE_CONNECTED &&
+ (option_connector == 0 ||
+ connector->connector_id == option_connector))
+ if (create_output_for_connector(ec, resources, connector) < 0)
+ return -1;
+
+ drmModeFreeConnector(connector);
+ }
+
+ if (wl_list_empty(&ec->output_list)) {
+ fprintf(stderr, "No currently active connector found.\n");
+ return -1;
+ }
+
+ drmModeFreeResources(resources);
+
+ return 0;
+}
+
+static void on_enter_vt(int signal_number, void *data)
+{
+ struct wlsc_compositor *ec = data;
+ struct wlsc_output *output;
+ int ret;
+
+ ret = drmSetMaster(ec->drm_fd);
+ if (ret) {
+ fprintf(stderr, "failed to set drm master\n");
+ kill(0, SIGTERM);
+ return;
+ }
+
+ fprintf(stderr, "enter vt\n");
+
+ ioctl(ec->tty_fd, VT_RELDISP, VT_ACKACQ);
+ ec->vt_active = 1;
+
+ wl_list_for_each(output, &ec->output_list, link) {
+ ret = drmModeSetCrtc(ec->drm_fd, output->crtc_id,
+ output->fb_id[output->current ^ 1], 0, 0,
+ &output->connector_id, 1, &output->mode);
+ if (ret)
+ fprintf(stderr, "failed to set mode for connector %d: %m\n",
+ output->connector_id);
+ }
+}
+
+static void on_leave_vt(int signal_number, void *data)
+{
+ struct wlsc_compositor *ec = data;
+ int ret;
+
+ ret = drmDropMaster(ec->drm_fd);
+ if (ret) {
+ fprintf(stderr, "failed to drop drm master\n");
+ kill(0, SIGTERM);
+ return;
+ }
+
+ ioctl (ec->tty_fd, VT_RELDISP, 1);
+ ec->vt_active = 0;
+}
+
+static void
+on_tty_input(int fd, uint32_t mask, void *data)
+{
+ struct wlsc_compositor *ec = data;
+
+ /* Ignore input to tty. We get keyboard events from evdev
+ */
+ tcflush(ec->tty_fd, TCIFLUSH);
+}
+
+static void on_term_signal(int signal_number, void *data)
+{
+ struct wlsc_compositor *ec = data;
+
+ if (tcsetattr(ec->tty_fd, TCSANOW, &ec->terminal_attributes) < 0)
+ fprintf(stderr, "could not restore terminal to canonical mode\n");
+
+ exit(0);
+}
+
+static int setup_tty(struct wlsc_compositor *ec, struct wl_event_loop *loop)
+{
+ struct termios raw_attributes;
+ struct vt_mode mode = { 0 };
+
+ ec->tty_fd = open("/dev/tty0", O_RDWR | O_NOCTTY);
+ if (ec->tty_fd <= 0) {
+ fprintf(stderr, "failed to open active tty: %m\n");
+ return -1;
+ }
+
+ if (tcgetattr(ec->tty_fd, &ec->terminal_attributes) < 0) {
+ fprintf(stderr, "could not get terminal attributes: %m\n");
+ return -1;
+ }
+
+ /* Ignore control characters and disable echo */
+ raw_attributes = ec->terminal_attributes;
+ cfmakeraw(&raw_attributes);
+
+ /* Fix up line endings to be normal (cfmakeraw hoses them) */
+ raw_attributes.c_oflag |= OPOST | OCRNL;
+
+ if (tcsetattr(ec->tty_fd, TCSANOW, &raw_attributes) < 0)
+ fprintf(stderr, "could not put terminal into raw mode: %m\n");
+
+ ec->term_signal_source =
+ wl_event_loop_add_signal(loop, SIGTERM, on_term_signal, ec);
+
+ ec->tty_input_source =
+ wl_event_loop_add_fd(loop, ec->tty_fd,
+ WL_EVENT_READABLE, on_tty_input, ec);
+
+ ec->vt_active = 1;
+ mode.mode = VT_PROCESS;
+ mode.relsig = SIGUSR1;
+ mode.acqsig = SIGUSR2;
+ if (!ioctl(ec->tty_fd, VT_SETMODE, &mode) < 0) {
+ fprintf(stderr, "failed to take control of vt handling\n");
+ }
+
+ ec->leave_vt_source =
+ wl_event_loop_add_signal(loop, SIGUSR1, on_leave_vt, ec);
+ ec->enter_vt_source =
+ wl_event_loop_add_signal(loop, SIGUSR2, on_enter_vt, ec);
+
+ return 0;
+}
+
+int
+wlsc_compositor_init_drm(struct wlsc_compositor *ec)
+{
+ struct udev_enumerate *e;
+ struct udev_list_entry *entry;
+ struct udev_device *device;
+ const char *path;
+ struct wlsc_input_device *input_device;
+ struct wl_event_loop *loop;
+
+ ec->udev = udev_new();
+ if (ec->udev == NULL) {
+ fprintf(stderr, "failed to initialize udev context\n");
+ return -1;
+ }
+
+ input_device = wlsc_input_device_create(ec);
+ ec->input_device = input_device;
+
+ e = udev_enumerate_new(ec->udev);
+ udev_enumerate_add_match_subsystem(e, "input");
+ udev_enumerate_add_match_property(e, "WAYLAND_SEAT", "1");
+ udev_enumerate_scan_devices(e);
+ udev_list_entry_foreach(entry, udev_enumerate_get_list_entry(e)) {
+ path = udev_list_entry_get_name(entry);
+ device = udev_device_new_from_syspath(ec->udev, path);
+ evdev_input_device_create(input_device, ec->wl_display,
+ udev_device_get_devnode(device));
+ }
+ udev_enumerate_unref(e);
+
+ e = udev_enumerate_new(ec->udev);
+ udev_enumerate_add_match_subsystem(e, "drm");
+ udev_enumerate_add_match_property(e, "WAYLAND_SEAT", "1");
+ udev_enumerate_scan_devices(e);
+ udev_list_entry_foreach(entry, udev_enumerate_get_list_entry(e)) {
+ path = udev_list_entry_get_name(entry);
+ device = udev_device_new_from_syspath(ec->udev, path);
+ fprintf(stderr, "creating output for %s\n", path);
+
+ if (init_egl(ec, device) < 0) {
+ fprintf(stderr, "failed to initialize egl\n");
+ return -1;
+ }
+ if (create_outputs(ec) < 0) {
+ fprintf(stderr, "failed to create output for %s\n", path);
+ return -1;
+ }
+ }
+ udev_enumerate_unref(e);
+
+ loop = wl_display_get_event_loop(ec->wl_display);
+ setup_tty(ec, loop);
+
+ return 0;
+}