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const std = @import("std");
const os = std.os.linux;
const Drm = @import("../request.zig").Drm;
const Card = @import("../card.zig").Card;
const FrameBuffer = @import("../frame-buffer/root.zig").FrameBuffer;
pub const Connection = @import("connection.zig").Connection;
pub const Mode = @import("mode.zig").Mode;
pub const ConnectorType = @import("type.zig").Type;
const RawConnector = extern struct {
encoder_ids: ?*u32,
modes: ?*Mode,
prop_ids: ?*u32,
prop_value_ids: ?*u64,
count_modes: u32,
count_props: u32,
count_encoders: u32,
encoder_id: u32,
id: u32,
type: ConnectorType,
type_id: u32,
connection: Connection,
mm_width: u32,
mm_height: u32,
subpixel: u32,
pad: u32,
};
pub const Connector = struct {
const Self = @This();
card: *Card,
encoder_ids: []u32,
modes: []Mode,
prop_ids: []u32,
prop_value_ids: []u64,
encoder_id: u32,
id: u32,
type: ConnectorType,
type_id: u32,
connection: Connection,
mm_width: u32,
mm_height: u32,
subpixel: u32,
pad: u32,
pub fn raw_without_ids(card: *Card, id: u32) !RawConnector {
var result = std.mem.zeroInit(RawConnector, .{ .id = id });
try Drm.get_connector.request(card.file.handle, RawConnector, &result);
return result;
}
// NOTE: This function does not take in account
// that there might be some hot-plugging going
// on. This might have to change in the future.
pub fn init(card: *Card, id: u32) !Self {
var raw = try Self.raw_without_ids(card, id);
const resources = .{
.encoder_ids = try card.allocator.alloc(u32, raw.count_encoders),
.modes = try card.allocator.alloc(Mode, raw.count_modes),
.prop_ids = try card.allocator.alloc(u32, raw.count_props),
.prop_value_ids = try card.allocator.alloc(u64, raw.count_props),
.encoder_id = raw.encoder_id,
.id = raw.id,
.type = raw.type,
.type_id = raw.type_id,
.connection = raw.connection,
.mm_width = raw.mm_width,
.mm_height = raw.mm_height,
.subpixel = raw.subpixel,
.pad = raw.pad,
.card = card,
};
@memset(resources.encoder_ids, 0);
@memset(resources.modes, std.mem.zeroes(Mode));
@memset(resources.prop_ids, 0);
@memset(resources.prop_value_ids, 0);
raw.encoder_ids = @ptrCast(resources.encoder_ids);
raw.modes = @ptrCast(resources.modes);
raw.prop_ids = @ptrCast(resources.prop_ids);
raw.prop_value_ids = @ptrCast(resources.prop_value_ids);
try Drm.get_connector.request(card.file.handle, RawConnector, &raw);
return resources;
}
pub fn deinit(self: *Self) void {
self.card.allocator.free(self.encoder_ids);
self.card.allocator.free(self.modes);
self.card.allocator.free(self.prop_ids);
}
pub fn compatible_crtc(self: *Self) ?usize {
for (self.encoder_ids) |encoder_id| {
var encoder = self.card.encoder(encoder_id) catch continue;
defer encoder.deinit();
for (0..32) |index| {
if ((encoder.possible_crtcs & (@as(u32, 1) << @intCast(index))) != 0) {
return index;
}
}
}
return null;
}
};
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