screen: add crtc

1 files changed, 45 insertions, 0 deletions

diff --git a/src/screen/drm/crtc/root.zig b/src/screen/drm/crtc/root.zig
new file mode 100644
index 0000000..7601732
--- /dev/null
+++ b/src/screen/drm/crtc/root.zig
@@ -0,0 +1,45 @@
+const std = @import("std");
+const Card = @import("../card.zig").Card;
+const Drm = @import("../request.zig").Drm;
+const Connector = @import("../connector/root.zig").Connector;
+
+pub const RawCrtc = extern struct {
+    connectors: ?*Connector,
+    count_connectors: u32,
+    id: u32,
+    buffer_id: u32,
+    x: u32,
+    y: u32,
+    gamma_size: u32,
+    mode_valid: u32,
+};
+
+pub const Crtc = struct {
+    const Self = @This();
+
+    id: u32,
+    buffer_id: u32,
+    x: u32,
+    y: u32,
+    mode_valid: u32,
+    gamma_size: u32,
+    card: *Card,
+
+    pub fn init(card: *Card, id: u32) !Self {
+        var raw = std.mem.zeroInit(RawCrtc, .{ .id = id });
+        try Drm.get_crtc.request(card.file.handle, RawCrtc, &raw);
+        return .{
+            .id = raw.id,
+            .buffer_id = raw.buffer_id,
+            .x = raw.x,
+            .y = raw.y,
+            .mode_valid = raw.mode_valid,
+            .gamma_size = raw.gamma_size,
+            .card = card,
+        };
+    }
+
+    pub fn deinit(self: *Self) void {
+        _ = self;
+    }
+};