Fix a small calculation error for buffer size

2026-01-10 23:16:04 +08:00
parent 6469cffef4
commit 2b6b680341
1 changed files with 1 additions and 1 deletions
@@ -124,7 +124,7 @@ impl App {

    async fn write_response<'a>(&mut self, resp: Response<'a>) {
        const SYSEX_MAX: usize = 1024 - 2; // 2-byte framing
-        const POSTCARD_WIRE_MAX: usize = SYSEX_MAX * 7 / 8; // 7-in-8 encoding overhead
+        const POSTCARD_WIRE_MAX: usize = (SYSEX_MAX - MAGIC_NUMBER_LEN) * 7 / 8; // 7-in-8 encoding overhead
        const USB_WIRE_MAX: usize = (SYSEX_MAX * 4).div_ceil(3); // USB MIDI muxing overhead

        let mut resp_buffer = [0u8; POSTCARD_WIRE_MAX];