diff options
Diffstat (limited to 'third_party/pipewire/spa/support/system.h')
| -rw-r--r-- | third_party/pipewire/spa/support/system.h | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/third_party/pipewire/spa/support/system.h b/third_party/pipewire/spa/support/system.h new file mode 100644 index 0000000000..8076ceb4bb --- /dev/null +++ b/third_party/pipewire/spa/support/system.h @@ -0,0 +1,165 @@ +/* Simple Plugin API + * + * Copyright © 2019 Wim Taymans + * + * 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 (including the next + * paragraph) 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 SPA_SYSTEM_H +#define SPA_SYSTEM_H + +#ifdef __cplusplus +extern "C" { +#endif + +struct itimerspec; + +#include <time.h> +#include <sys/types.h> + +#include <spa/utils/defs.h> +#include <spa/utils/hook.h> + +/** \defgroup spa_system System + * I/O, clock, polling, timer, and signal interfaces + */ + +/** + * \addtogroup spa_system + * \{ + */ + +/** + * a collection of core system functions + */ +#define SPA_TYPE_INTERFACE_System SPA_TYPE_INFO_INTERFACE_BASE "System" +#define SPA_TYPE_INTERFACE_DataSystem SPA_TYPE_INFO_INTERFACE_BASE "DataSystem" + +#define SPA_VERSION_SYSTEM 0 +struct spa_system { struct spa_interface iface; }; + +/* IO events */ +#define SPA_IO_IN (1 << 0) +#define SPA_IO_OUT (1 << 2) +#define SPA_IO_ERR (1 << 3) +#define SPA_IO_HUP (1 << 4) + +/* flags */ +#define SPA_FD_CLOEXEC (1<<0) +#define SPA_FD_NONBLOCK (1<<1) +#define SPA_FD_EVENT_SEMAPHORE (1<<2) +#define SPA_FD_TIMER_ABSTIME (1<<3) +#define SPA_FD_TIMER_CANCEL_ON_SET (1<<4) + +struct spa_poll_event { + uint32_t events; + void *data; +}; + +struct spa_system_methods { +#define SPA_VERSION_SYSTEM_METHODS 0 + uint32_t version; + + /* read/write/ioctl */ + ssize_t (*read) (void *object, int fd, void *buf, size_t count); + ssize_t (*write) (void *object, int fd, const void *buf, size_t count); + int (*ioctl) (void *object, int fd, unsigned long request, ...); + int (*close) (void *object, int fd); + + /* clock */ + int (*clock_gettime) (void *object, + int clockid, struct timespec *value); + int (*clock_getres) (void *object, + int clockid, struct timespec *res); + + /* poll */ + int (*pollfd_create) (void *object, int flags); + int (*pollfd_add) (void *object, int pfd, int fd, uint32_t events, void *data); + int (*pollfd_mod) (void *object, int pfd, int fd, uint32_t events, void *data); + int (*pollfd_del) (void *object, int pfd, int fd); + int (*pollfd_wait) (void *object, int pfd, + struct spa_poll_event *ev, int n_ev, int timeout); + + /* timers */ + int (*timerfd_create) (void *object, int clockid, int flags); + int (*timerfd_settime) (void *object, + int fd, int flags, + const struct itimerspec *new_value, + struct itimerspec *old_value); + int (*timerfd_gettime) (void *object, + int fd, struct itimerspec *curr_value); + int (*timerfd_read) (void *object, int fd, uint64_t *expirations); + + /* events */ + int (*eventfd_create) (void *object, int flags); + int (*eventfd_write) (void *object, int fd, uint64_t count); + int (*eventfd_read) (void *object, int fd, uint64_t *count); + + /* signals */ + int (*signalfd_create) (void *object, int signal, int flags); + int (*signalfd_read) (void *object, int fd, int *signal); +}; + +#define spa_system_method_r(o,method,version,...) \ +({ \ + int _res = -ENOTSUP; \ + struct spa_system *_o = o; \ + spa_interface_call_res(&_o->iface, \ + struct spa_system_methods, _res, \ + method, version, ##__VA_ARGS__); \ + _res; \ +}) + + +#define spa_system_read(s,...) spa_system_method_r(s,read,0,__VA_ARGS__) +#define spa_system_write(s,...) spa_system_method_r(s,write,0,__VA_ARGS__) +#define spa_system_ioctl(s,...) spa_system_method_r(s,ioctl,0,__VA_ARGS__) +#define spa_system_close(s,...) spa_system_method_r(s,close,0,__VA_ARGS__) + +#define spa_system_clock_gettime(s,...) spa_system_method_r(s,clock_gettime,0,__VA_ARGS__) +#define spa_system_clock_getres(s,...) spa_system_method_r(s,clock_getres,0,__VA_ARGS__) + +#define spa_system_pollfd_create(s,...) spa_system_method_r(s,pollfd_create,0,__VA_ARGS__) +#define spa_system_pollfd_add(s,...) spa_system_method_r(s,pollfd_add,0,__VA_ARGS__) +#define spa_system_pollfd_mod(s,...) spa_system_method_r(s,pollfd_mod,0,__VA_ARGS__) +#define spa_system_pollfd_del(s,...) spa_system_method_r(s,pollfd_del,0,__VA_ARGS__) +#define spa_system_pollfd_wait(s,...) spa_system_method_r(s,pollfd_wait,0,__VA_ARGS__) + +#define spa_system_timerfd_create(s,...) spa_system_method_r(s,timerfd_create,0,__VA_ARGS__) +#define spa_system_timerfd_settime(s,...) spa_system_method_r(s,timerfd_settime,0,__VA_ARGS__) +#define spa_system_timerfd_gettime(s,...) spa_system_method_r(s,timerfd_gettime,0,__VA_ARGS__) +#define spa_system_timerfd_read(s,...) spa_system_method_r(s,timerfd_read,0,__VA_ARGS__) + +#define spa_system_eventfd_create(s,...) spa_system_method_r(s,eventfd_create,0,__VA_ARGS__) +#define spa_system_eventfd_write(s,...) spa_system_method_r(s,eventfd_write,0,__VA_ARGS__) +#define spa_system_eventfd_read(s,...) spa_system_method_r(s,eventfd_read,0,__VA_ARGS__) + +#define spa_system_signalfd_create(s,...) spa_system_method_r(s,signalfd_create,0,__VA_ARGS__) +#define spa_system_signalfd_read(s,...) spa_system_method_r(s,signalfd_read,0,__VA_ARGS__) + +/** + * \} + */ + +#ifdef __cplusplus +} /* extern "C" */ +#endif + +#endif /* SPA_SYSTEM_H */ |