[mirror_qemu.git] / chardev / chardev-internal.h

/*
 * QEMU Character device internals
 *
 * 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 CHARDEV_INTERNAL_H
#define CHARDEV_INTERNAL_H

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

#define MAX_MUX 4
#define MUX_BUFFER_SIZE 32 /* Must be a power of 2.  */
#define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)

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;
};
typedef struct MuxChardev MuxChardev;

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

void mux_set_focus(Chardev *chr, int focus);
void mux_chr_send_all_event(Chardev *chr, QEMUChrEvent event);

Object *get_chardevs_root(void);

#endif /* CHAR_MUX_H */
Commit	Line	Data
df85a78b	1	/*
ffa0f7eb	2	* QEMU Character device internals
df85a78b MAL	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	*/
ffa0f7eb PMD	24	#ifndef CHARDEV_INTERNAL_H
ffa0f7eb PMD	25	#define CHARDEV_INTERNAL_H
df85a78b	26
8228e353	27	#include "chardev/char.h"
4d43a603	28	#include "chardev/char-fe.h"
30827bad	29	#include "qom/object.h"
df85a78b	30
df85a78b MAL	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)
ffa0f7eb	34
db1015e9	35	struct MuxChardev {
df85a78b MAL	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;
db1015e9 EH	54	};
db1015e9 EH	55	typedef struct MuxChardev MuxChardev;
df85a78b	56
8110fa1d EH	57	DECLARE_INSTANCE_CHECKER(MuxChardev, MUX_CHARDEV,
8110fa1d EH	58	TYPE_CHARDEV_MUX)
df85a78b MAL	59	#define CHARDEV_IS_MUX(chr) \
	60	object_dynamic_cast(OBJECT(chr), TYPE_CHARDEV_MUX)
	61
df85a78b	62	void mux_set_focus(Chardev *chr, int focus);
2fa9044a	63	void mux_chr_send_all_event(Chardev *chr, QEMUChrEvent event);
df85a78b	64
30827bad PMD	65	Object *get_chardevs_root(void);
30827bad PMD	66
df85a78b	67	#endif /* CHAR_MUX_H */