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Marc-André Lureaudf85a782016-12-12 15:06:14 +03001/*
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
Marc-André Lureau8228e352017-01-26 17:19:46 +040027#include "chardev/char.h"
Marc-André Lureau4d43a602017-01-26 18:26:44 +040028#include "chardev/char-fe.h"
Marc-André Lureaudf85a782016-12-12 15:06:14 +030029
30extern bool muxes_realized;
31
32#define MAX_MUX 4
33#define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
34#define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
35typedef struct MuxChardev {
36 Chardev parent;
37 CharBackend *backends[MAX_MUX];
38 CharBackend chr;
39 int focus;
40 int mux_cnt;
41 int term_got_escape;
42 int max_size;
43 /* Intermediate input buffer catches escape sequences even if the
44 currently active device is not accepting any input - but only until it
45 is full as well. */
46 unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
47 int prod[MAX_MUX];
48 int cons[MAX_MUX];
49 int timestamps;
50
51 /* Protected by the Chardev chr_write_lock. */
52 int linestart;
53 int64_t timestamps_start;
54} MuxChardev;
55
56#define MUX_CHARDEV(obj) OBJECT_CHECK(MuxChardev, (obj), TYPE_CHARDEV_MUX)
57#define CHARDEV_IS_MUX(chr) \
58 object_dynamic_cast(OBJECT(chr), TYPE_CHARDEV_MUX)
59
60void mux_chr_set_handlers(Chardev *chr, GMainContext *context);
61void mux_set_focus(Chardev *chr, int focus);
Marc-André Lureaubed3bb92016-12-14 14:40:45 +030062void mux_chr_send_all_event(Chardev *chr, int event);
Marc-André Lureaudf85a782016-12-12 15:06:14 +030063
64#endif /* CHAR_MUX_H */