[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"

extern bool muxes_realized;

#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"
df85a78b MAL	28
	29	extern bool muxes_realized;
	30
	31	#define MAX_MUX 4
	32	#define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
	33	#define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
	34	typedef struct MuxChardev {
	35	Chardev parent;
	36	CharBackend *backends[MAX_MUX];
	37	CharBackend chr;
	38	int focus;
	39	int mux_cnt;
	40	int term_got_escape;
	41	int max_size;
	42	/* Intermediate input buffer catches escape sequences even if the
	43	currently active device is not accepting any input - but only until it
	44	is full as well. */
	45	unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
	46	int prod[MAX_MUX];
	47	int cons[MAX_MUX];
	48	int timestamps;
	49
	50	/* Protected by the Chardev chr_write_lock. */
	51	int linestart;
	52	int64_t timestamps_start;
	53	} MuxChardev;
	54
	55	#define MUX_CHARDEV(obj) OBJECT_CHECK(MuxChardev, (obj), TYPE_CHARDEV_MUX)
	56	#define CHARDEV_IS_MUX(chr) \
	57	object_dynamic_cast(OBJECT(chr), TYPE_CHARDEV_MUX)
	58
	59	void mux_chr_set_handlers(Chardev chr, GMainContext context);
	60	void mux_set_focus(Chardev *chr, int focus);
bed3bb9b	61	void mux_chr_send_all_event(Chardev *chr, int event);
df85a78b MAL	62
df85a78b MAL	63	#endif /* CHAR_MUX_H */