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 */ 21 extern 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 */ 28 extern CharDriverState* qemu_chr_open_buffer( CharDriverState* endpoint ); 29 30 /* must be called from the main event loop to poll all charpipes */ 31 extern void charpipe_poll( void ); 32 33 #endif /* _CHARPIPE_H */ 34
