[qemu.git] / include / chardev / char-mux.h

/*
 * QEMU System Emulator
 *
 * Copyright (c) 2003-2008 Fabrice Bellard
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
#ifndef CHAR_MUX_H
#define CHAR_MUX_H

#include "chardev/char.h"
#include "chardev/char-fe.h"

#define MAX_MUX 4
#define MUX_BUFFER_SIZE 32 /* Must be a power of 2.  */
#define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
typedef struct MuxChardev {
    Chardev parent;
    CharBackend *backends[MAX_MUX];
    CharBackend chr;
    int focus;
    int mux_cnt;
    int term_got_escape;
    int max_size;
    /* Intermediate input buffer catches escape sequences even if the
       currently active device is not accepting any input - but only until it
       is full as well. */
    unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
    int prod[MAX_MUX];
    int cons[MAX_MUX];
    int timestamps;

    /* Protected by the Chardev chr_write_lock.  */
    int linestart;
    int64_t timestamps_start;
} MuxChardev;

#define MUX_CHARDEV(obj) OBJECT_CHECK(MuxChardev, (obj), TYPE_CHARDEV_MUX)
#define CHARDEV_IS_MUX(chr)                             \
    object_dynamic_cast(OBJECT(chr), TYPE_CHARDEV_MUX)

void mux_chr_set_handlers(Chardev *chr, GMainContext *context);
void mux_set_focus(Chardev *chr, int focus);
void mux_chr_send_all_event(Chardev *chr, int event);

#endif /* CHAR_MUX_H */
Commit	Line	Data
df85a78b MAL	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
8228e353	27	#include "chardev/char.h"
4d43a603	28	#include "chardev/char-fe.h"
df85a78b	29
df85a78b MAL	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);
bed3bb9b	60	void mux_chr_send_all_event(Chardev *chr, int event);
df85a78b MAL	61
df85a78b MAL	62	#endif /* CHAR_MUX_H */