1/* Copyright (C) 2007-2008 The Android Open Source Project
2**
3** This software is licensed under the terms of the GNU General Public
4** License version 2, as published by the Free Software Foundation, and
5** may be copied, distributed, and modified under those terms.
6**
7** This program is distributed in the hope that it will be useful,
8** but WITHOUT ANY WARRANTY; without even the implied warranty of
9** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
10** GNU General Public License for more details.
11*/
12#ifndef _CHARPIPE_H
13#define _CHARPIPE_H
14
15#include "qemu-common.h"
16
17/* open two connected character drivers that can be used to communicate by internal
18 * QEMU components. For Android, this is used to connect an emulated serial port
19 * with the android modem
20 */
21extern int  qemu_chr_open_charpipe( CharDriverState* *pfirst, CharDriverState* *psecond );
22
23/* create a buffering character driver for a given endpoint. The result will buffer
24 * anything that is sent to it but cannot be sent to the endpoint immediately.
25 * On the other hand, if the endpoint calls can_read() or read(), these calls
26 * are passed immediately to the can_read() or read() handlers of the result.
27 */
28extern CharDriverState*  qemu_chr_open_buffer( CharDriverState*  endpoint );
29
30/* must be called from the main event loop to poll all charpipes */
31extern void charpipe_poll( void );
32
33#endif /* _CHARPIPE_H */
34