1 /* 2 * QEMU System Emulator 3 * 4 * Copyright (c) 2003-2008 Fabrice Bellard 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a copy 7 * of this software and associated documentation files (the "Software"), to deal 8 * in the Software without restriction, including without limitation the rights 9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 10 * copies of the Software, and to permit persons to whom the Software is 11 * furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 22 * THE SOFTWARE. 23 */ 24 #ifndef CHAR_MUX_H 25 #define CHAR_MUX_H 26 27 #include "chardev/char.h" 28 #include "chardev/char-fe.h" 29 30 #define MAX_MUX 4 31 #define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */ 32 #define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1) 33 typedef struct MuxChardev { 34 Chardev parent; 35 CharBackend *backends[MAX_MUX]; 36 CharBackend chr; 37 int focus; 38 int mux_cnt; 39 int term_got_escape; 40 int max_size; 41 /* Intermediate input buffer catches escape sequences even if the 42 currently active device is not accepting any input - but only until it 43 is full as well. */ 44 unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE]; 45 int prod[MAX_MUX]; 46 int cons[MAX_MUX]; 47 int timestamps; 48 49 /* Protected by the Chardev chr_write_lock. */ 50 int linestart; 51 int64_t timestamps_start; 52 } MuxChardev; 53 54 #define MUX_CHARDEV(obj) OBJECT_CHECK(MuxChardev, (obj), TYPE_CHARDEV_MUX) 55 #define CHARDEV_IS_MUX(chr) \ 56 object_dynamic_cast(OBJECT(chr), TYPE_CHARDEV_MUX) 57 58 void mux_chr_set_handlers(Chardev *chr, GMainContext *context); 59 void mux_set_focus(Chardev *chr, int focus); 60 void mux_chr_send_all_event(Chardev *chr, int event); 61 62 #endif /* CHAR_MUX_H */ 63