some work on compositor

1 files changed, 85 insertions, 0 deletions

diff --git a/libraries/goldman/include/goldman/protocol.hpp b/libraries/goldman/include/goldman/protocol.hpp
new file mode 100644
index 0000000..b7f4d51
--- /dev/null
+++ b/libraries/goldman/include/goldman/protocol.hpp
@@ -0,0 +1,85 @@
+#pragma once
+
+#include <euler/syscall.hpp>
+#include <memory>
+
+//TODO: handle stream errors, make thread safe
+
+namespace goldman::protocol {
+
+  typedef euler::syscall::encoded_color color;
+  typedef uint16_t window;
+
+  static inline void send_open_window(
+    euler::syscall::stream_handle socket, uint32_t width, uint32_t height) {
+
+    struct [[gnu::packed]] {
+      uint8_t type;
+      uint32_t width;
+      uint32_t height;
+    } packet {
+      .type = 0x00,
+      .width = width,
+      .height = height
+    };
+
+    euler::syscall::write_to_stream(socket, sizeof(packet), &packet);
+
+  }
+
+  void send_update_window_region(
+    euler::syscall::stream_handle socket, window the_window,
+    uint32_t start_x, uint32_t start_y, uint32_t width,
+    uint32_t height, const color *the_data, size_t data_pitch) {
+
+    struct [[gnu::packed]] {
+      uint8_t type;
+      window the_window;
+      uint32_t start_x;
+      uint32_t start_y;
+      uint32_t width;
+      uint32_t height;
+    } packet_head {
+      .type = 0x01,
+      .the_window = the_window,
+      .start_x = start_x,
+      .start_y = start_y,
+      .width = width,
+      .height = height
+    };
+
+    euler::syscall::write_to_stream(socket, sizeof(packet_head), &packet_head);
+    for (uint32_t y = 0; y < height; ++y)
+      euler::syscall::write_to_stream(
+        socket, width * sizeof(color), the_data + data_pitch * y);
+
+  }
+
+  void send_close_window(
+    euler::syscall::stream_handle socket, window the_window) {
+
+    struct [[gnu::packed]] {
+      uint8_t type;
+      window the_window;
+    } packet {
+      .type = 0x02,
+      .the_window = the_window
+    };
+
+    euler::syscall::write_to_stream(socket, sizeof(packet), &packet);
+
+  }
+
+  enum class response_id : uint8_t {
+    window_opened
+  };
+
+  window get_window_opened_body(euler::syscall::stream_handle socket) {
+
+    window w;
+    euler::syscall::read_from_stream(socket, sizeof(w), &w);
+    return w;
+
+  }
+
+}