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#include <daguerre/image.hpp>
#include "socket.hpp"
#include "window.hpp"
#include "main.hpp"
#include <memory>
#include <vector>
struct socket_state {
euler::syscall::stream_handle socket;
std::vector<window *> windows;
daguerre::hilbert_color window_bg = euler::syscall::encode_color(0, 0, 0);
bool try_open_window() {
struct [[gnu::packed]] {
uint32_t width;
uint32_t height;
} body;
if (euler::syscall::read_from_stream(socket, sizeof(body), &body) !=
euler::syscall::stream_result::success)
return false;
window *w = new window(body.width, body.height);
w->contents.fill(window_bg);
uint16_t wid = 0;
while (wid < windows.size())
if (windows[wid] != 0)
++wid;
else
break;
if (wid == windows.size())
windows.push_back(w);
else
windows[wid] = w;
r->lock();
r->add_window(w);
r->unlock();
struct [[gnu::packed]] {
uint8_t type;
uint16_t the_window;
} response {
.type = 0x00,
.the_window = wid
};
return
euler::syscall::write_to_stream(socket, sizeof(response), &response) ==
euler::syscall::stream_result::success;
}
bool try_update_window_region() {
struct [[gnu::packed]] {
uint16_t window;
uint32_t start_x;
uint32_t start_y;
uint32_t width;
uint32_t height;
} body_head;
if (euler::syscall::read_from_stream(socket, sizeof(body_head), &body_head) !=
euler::syscall::stream_result::success)
return false;
std::vector<daguerre::hilbert_color> data(body_head.width * body_head.height);
if (euler::syscall::read_from_stream(socket, data.size() * 4, data.data()) !=
euler::syscall::stream_result::success)
return false;
daguerre::image<daguerre::hilbert_color>
data_as_image(body_head.width, body_head.height, data.data(), body_head.width, false);
if (body_head.window >= windows.size() || !windows[body_head.window])
return false;
window *w = windows[body_head.window];
r->lock();
if ((int)body_head.start_x + data_as_image.width > w->contents.width ||
(int)body_head.start_y + data_as_image.height > w->contents.height) {
r->unlock();
return false;
}
w->contents.copy_from(data_as_image, body_head.start_x, body_head.start_y);
r->unlock();
r->dispatch_render();
return true;
}
bool try_close_window() {
uint16_t wid;
if (euler::syscall::read_from_stream(socket, 2, &wid) !=
euler::syscall::stream_result::success)
return false;
if (wid >= windows.size() || !windows[wid])
return false;
r->lock();
r->remove_window(windows[wid]);
windows[wid] = 0;
r->unlock();
r->dispatch_render();
return true;
}
bool try_process_request() {
uint8_t type;
if (euler::syscall::read_from_stream(socket, 1, &type) !=
euler::syscall::stream_result::success)
return false;
switch (type) {
case 0x00: return try_open_window();
case 0x01: return try_update_window_region();
case 0x02: return try_close_window();
default: return false;
}
}
};
[[noreturn]] void socket_thread_main(euler::syscall::stream_handle socket) {
euler::syscall::set_thread_name("socket thread");
socket_state *state = new socket_state {
.socket = socket, .windows = {} };
while (state->try_process_request()) ;
r->lock();
for (unsigned i = 0; i < state->windows.size(); ++i) {
r->remove_window(state->windows[i]);
delete state->windows[i];
}
r->unlock();
delete state;
euler::syscall::close_stream(socket);
euler::syscall::end_this_thread(0);
}
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