feat: 支持向桌面端发送音量和显示器亮度数据。
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docs/udp.md
13
docs/udp.md
@ -15,3 +15,16 @@
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| 起始位置 | 2 | 0~65535 |
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| 长度 | 2 | 0~65535 |
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| 颜色 | 3 | RGB 顺序，$2^3 * 2^3 * 2^3 = 65535$ 真彩色 |
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### 更新电脑显示器亮度
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| 数据 | 长度（字节） | 说明 |
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| --- | --- | --- |
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| 显示器序号 | 1 | 0~255 |
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| 亮度 | 1 | 0~255 |
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### 更新电脑音量
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| 数据 | 长度（字节） | 说明 |
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| --- | --- | --- |
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| 音量 | 1 | 0~255 |
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108
main/desktop.c
108
main/desktop.c
@ -24,6 +24,10 @@ static const char *UDP_SERVER_TAG = "UDP_SERVER";
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static bool desktop_connected = false;
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static uint64_t last_desktop_ping_at = 0;
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static struct sockaddr *desktop_addr = NULL;
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static int sock = -1;
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static uint8_t tx_buffer[128];
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typedef struct desktop_value {
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uint8_t value;
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@ -52,18 +56,15 @@ static void udp_server_task(void *pvParameters) {
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char addr_str[128];
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int addr_family = (int)pvParameters;
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int ip_protocol = 0;
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struct sockaddr_in6 dest_addr;
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struct sockaddr_in dest_addr;
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while (1) {
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if (addr_family == AF_INET) {
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struct sockaddr_in *dest_addr_ip4 = (struct sockaddr_in *)&dest_addr;
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dest_addr_ip4->sin_addr.s_addr = htonl(INADDR_ANY);
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dest_addr_ip4->sin_family = AF_INET;
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dest_addr_ip4->sin_port = htons(UDP_PORT);
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dest_addr.sin_addr.s_addr = htonl(INADDR_ANY);
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dest_addr.sin_family = AF_INET;
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dest_addr.sin_port = htons(UDP_PORT);
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ip_protocol = IPPROTO_IP;
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}
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int sock = socket(addr_family, SOCK_DGRAM, ip_protocol);
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sock = socket(addr_family, SOCK_DGRAM, ip_protocol);
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if (sock < 0) {
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ESP_LOGE(UDP_SERVER_TAG, "Unable to create socket: errno %d. sock: %d",
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errno, sock);
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@ -81,16 +82,19 @@ static void udp_server_task(void *pvParameters) {
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if (err < 0) {
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ESP_LOGE(UDP_SERVER_TAG, "Socket unable to bind: errno %d. sock: %d",
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errno, sock);
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sock = -1;
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vTaskDelay(1000 / portTICK_PERIOD_MS);
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continue;
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}
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ESP_LOGI(UDP_SERVER_TAG, "Socket bound, port %d", UDP_PORT);
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struct sockaddr_storage source_addr; // Large enough for both IPv4 or IPv6
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struct sockaddr source_addr; // Large enough for both IPv4 or IPv6
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socklen_t socklen = sizeof(source_addr);
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while (1) {
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// ESP_LOGI(UDP_SERVER_TAG, "Waiting for data");
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int len = recvfrom(sock, rx_buffer, sizeof(rx_buffer) - 1, 0,
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(struct sockaddr *)&source_addr, &socklen);
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&source_addr, &socklen);
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// Error occurred during receiving
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if (len < 0) {
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if (errno == EAGAIN) {
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@ -102,7 +106,6 @@ static void udp_server_task(void *pvParameters) {
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// Data received
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else {
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// Get the sender's ip address as string
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if (source_addr.ss_family == PF_INET) {
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inet_ntoa_r(((struct sockaddr_in *)&source_addr)->sin_addr, addr_str,
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sizeof(addr_str) - 1);
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@ -112,8 +115,9 @@ static void udp_server_task(void *pvParameters) {
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switch (rx_buffer[0]) {
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case 1:
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last_desktop_ping_at = esp_timer_get_time();
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sendto(sock, rx_buffer, 1, 0, (struct sockaddr *)&source_addr,
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sizeof(source_addr));
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ESP_LOGD(UDP_SERVER_TAG, "Received ping from %s", addr_str);
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sendto(sock, rx_buffer, 1, 0, &source_addr, sizeof(source_addr));
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desktop_addr = &source_addr;
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break;
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case 2:
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@ -127,21 +131,7 @@ static void udp_server_task(void *pvParameters) {
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ESP_LOGI(UDP_SERVER_TAG, "%s", rx_buffer);
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break;
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}
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int err =
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sendto(sock, rx_buffer, len, 0, (struct sockaddr *)&source_addr,
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sizeof(source_addr));
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if (err < 0) {
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ESP_LOGI(UDP_SERVER_TAG, "Received %d bytes from %s:", len,
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addr_str);
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ESP_LOGE(UDP_SERVER_TAG,
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"Error occurred during sending: errno %d. sock: %d", errno,
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sock);
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shutdown(sock, 0);
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close(sock);
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break;
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}
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}
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ESP_LOGD(UDP_SERVER_TAG, "Received %d bytes from %s:", len, addr_str);
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}
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if (sock != -1 && len < 0) {
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@ -173,25 +163,71 @@ static uint8_t desktop_change_value(desktop_value_t *target, int8_t delta) {
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}
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static uint8_t change_display_brightness(uint8_t display_index, int8_t delta) {
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switch (display_index) {
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case 0:
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uint8_t value = desktop_change_value(&display1_brightness, delta);
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gui_change_display_brightness(display_index, value);
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return value;
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if (desktop_addr == NULL) {
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ESP_LOGW(UDP_SERVER_TAG, "No desktop connected");
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return 0;
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}
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switch (display_index) {
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case 0: {
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uint8_t value = desktop_change_value(&display1_brightness, delta);
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tx_buffer[0] = 3;
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tx_buffer[1] = 0;
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tx_buffer[2] = value;
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int err =
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sendto(sock, tx_buffer, 3, 0, desktop_addr, sizeof(*desktop_addr));
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if (err < 0) {
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ESP_LOGE(UDP_SERVER_TAG, "Socket unable to send: errno %d. sock: %d",
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errno, sock);
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}
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case 1:
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return desktop_change_value(&display1_brightness, delta);
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gui_change_display_brightness(display_index, value);
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return value;
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}
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case 1: {
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uint8_t value = desktop_change_value(&display1_brightness, delta);
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tx_buffer[0] = 3;
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tx_buffer[1] = 1;
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tx_buffer[2] = value;
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int err =
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sendto(sock, tx_buffer, 3, 0, desktop_addr, sizeof(*desktop_addr));
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if (err < 0) {
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ESP_LOGE(UDP_SERVER_TAG, "Socket unable to send: errno %d. sock: %d",
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errno, sock);
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}
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gui_change_display_brightness(display_index, value);
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return value;
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}
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default:
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ESP_LOGE(UDP_SERVER_TAG, "Invalid display index: %d", display_index);
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return 0;
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}
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}
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static uint8_t change_volume(int8_t delta) {
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if (desktop_addr == NULL) {
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ESP_LOGW(UDP_SERVER_TAG, "No desktop connected");
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return 0;
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}
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uint8_t value = desktop_change_value(&computer_volume, delta);
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tx_buffer[0] = 4;
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tx_buffer[1] = value;
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int err = sendto(sock, tx_buffer, 2, 0, desktop_addr, sizeof(*desktop_addr));
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if (err < 0) {
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char addr_str[128];
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inet_ntoa_r(((struct sockaddr_in *)desktop_addr)->sin_addr, addr_str,
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sizeof(addr_str) - 1);
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ESP_LOGI(UDP_SERVER_TAG, "addr: %s", addr_str);
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ESP_LOGE(UDP_SERVER_TAG, "Socket unable to send: errno %d. sock: %d", errno,
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sock);
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}
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gui_change_volume_level(value);
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return value;
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}
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