1 files changed, 131 insertions, 0 deletions
diff --git a/Sources/Compositor/OwlZowlIOSurfaceV1.m b/Sources/Compositor/OwlZowlIOSurfaceV1.m
new file mode 100644
index 0000000..9b9a022
--- /dev/null
+++ b/Sources/Compositor/OwlZowlIOSurfaceV1.m
@@ -0,0 +1,131 @@
+/* This file is part of Owl.
+ *
+ * Copyright © 2019-2021 Sergey Bugaev <bugaevc@gmail.com>
+ *
+ * Owl 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 3 of the License,
+ * or (at your option) any later version.
+ *
+ * Owl 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 Owl.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#import "OwlFeatures.h"
+#ifdef OWL_PLATFORM_APPLE
+
+#import "OwlZowlIOSurfaceV1.h"
+#import "owl-iosurface-unstable-v1.h"
+#import "owl-iosurface-unstable-v1-mig.h"
+#import "OwlMIG.h"
+#import "OwlIOSurfaceBuffer.h"
+
+@implementation OwlZowlIOSurfaceV1
+
+static NSMutableArray *instances;
+
++ (void) initialize {
+    if (instances == nil) {
+        instances = [[NSMutableArray alloc] init];
+    }
+}
+
+static void iosurface_destroy_handler(
+    struct wl_client *client,
+    struct wl_resource *resource
+) {
+    wl_resource_destroy(resource);
+}
+
+static void iosurface_destroy(struct wl_resource *resource) {
+    OwlZowlIOSurfaceV1 *self = wl_resource_get_user_data(resource);
+    [self release];
+}
+
+static void iosurface_create_buffer_handler(
+    struct wl_client *client,
+    struct wl_resource *resource,
+    uint32_t id
+) {
+    OwlZowlIOSurfaceV1 *self = wl_resource_get_user_data(resource);
+    struct wl_resource *buffer_resource = wl_resource_create(
+        client,
+        &wl_buffer_interface,
+        1,
+        id
+    );
+    [[[OwlIOSurfaceBuffer alloc] initWithResource: buffer_resource
+                                      surfacePort: self->_surfacePort] release];
+}
+
+static const struct zowl_iosurface_v1_interface iosurface_impl = {
+    .create_buffer = iosurface_create_buffer_handler,
+    .destroy = iosurface_destroy_handler
+};
+
+- (id) initWithResource: (struct wl_resource *) resource {
+    [instances addObject: self];
+    _resource = resource;
+    wl_resource_set_implementation(
+        resource,
+        &iosurface_impl,
+        [self retain],
+        iosurface_destroy
+    );
+
+    // Create the receiver port and serve owl_iosurface_v1 on it.
+    mach_port_allocate(
+        mach_task_self(),
+        MACH_PORT_RIGHT_RECEIVE,
+        &_receiverPort
+    );
+    [OwlMIG serveOnPort: _receiverPort
+          usingCallback: owl_iosurface_v1_server
+                maxSize: 100];
+
+    return self;
+}
+
+- (void) dealloc {
+    mach_port_deallocate(mach_task_self(), _receiverPort);
+    if (MACH_PORT_VALID (_surfacePort)) {
+        mach_port_deallocate(mach_task_self(), _surfacePort);
+    }
+    [instances removeObject: self];
+    [super dealloc];
+}
+
+- (mach_port_t) receiverPort {
+    return _receiverPort;
+}
+
++ (OwlZowlIOSurfaceV1 *) surfaceByReceiverPort: (mach_port_t) port {
+    for (OwlZowlIOSurfaceV1 *surface in instances) {
+        if (surface->_receiverPort == port) {
+            return surface;
+        }
+    }
+    return nil;
+}
+
+kern_return_t owl_iosurface_v1_server_set_surface_port(
+    mach_port_t receiver_port,
+    mach_port_t iosurface_port
+) {
+    OwlZowlIOSurfaceV1 *surface = [OwlZowlIOSurfaceV1 surfaceByReceiverPort: receiver_port];
+    if (surface == nil) {
+        NSLog(@"Failed to find the surface the receiver port belongs to");
+        return KERN_INVALID_ARGUMENT;
+    }
+    surface->_surfacePort = iosurface_port;
+    return KERN_SUCCESS;
+}
+
+@end
+
+#endif /* OWL_PLATFORM_APPLE */