libcamera/vivid.git - libcamera pipeline handler for VIVID

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Diffstat (limited to 'src/cam/file_sink.h')

-rw-r--r--

1 files changed, 4 insertions, 2 deletions

/* SPDX-License-Identifier: LGPL-2.1-or-later */ /* * Copyright (C) 2019, Google Inc. * * V4L2 compatibility layer */ #include "v4l2_compat_manager.h" #include <assert.h> #include <errno.h> #include <fcntl.h> #include <stdarg.h> #include <sys/ioctl.h> #include <sys/mman.h> #include <sys/stat.h> #include <sys/types.h> #include <unistd.h> #include <libcamera/base/utils.h> #define LIBCAMERA_PUBLIC __attribute__((visibility("default"))) using namespace libcamera; #define extract_va_arg(type, arg, last) \ { \ va_list ap; \ va_start(ap, last); \ arg = va_arg(ap, type); \ va_end(ap); \ } namespace { /* * Determine if the flags require a further mode arguments that needs to be * parsed from va_args. */ bool needs_mode(int flags) { return (flags & O_CREAT) || ((flags & O_TMPFILE) == O_TMPFILE); } } /* namespace */ extern "C" { LIBCAMERA_PUBLIC int open(const char *path, int oflag, ...) { mode_t mode = 0; if (needs_mode(oflag)) extract_va_arg(mode_t, mode, oflag); return V4L2CompatManager::instance()->openat(AT_FDCWD, path, oflag, mode); } /* _FORTIFY_SOURCE redirects open to __open_2 */ LIBCAMERA_PUBLIC int __open_2(const char *path, int oflag) { assert(!needs_mode(oflag)); return open(path, oflag); } #ifndef open64 LIBCAMERA_PUBLIC int open64(const char *path, int oflag, ...) { mode_t mode = 0; if (needs_mode(oflag)) extract_va_arg(mode_t, mode, oflag); return V4L2CompatManager::instance()->openat(AT_FDCWD, path, oflag | O_LARGEFILE, mode); } LIBCAMERA_PUBLIC int __open64_2(const char *path, int oflag) { assert(!needs_mode(oflag)); return open64(path, oflag); } #endif LIBCAMERA_PUBLIC int openat(int dirfd, const char *path, int oflag, ...) { mode_t mode = 0; if (needs_mode(oflag)) extract_va_arg(mode_t, mode, oflag); return V4L2CompatManager::instance()->openat(dirfd, path, oflag, mode); } LIBCAMERA_PUBLIC int __openat_2(int dirfd, const char *path, int oflag) { assert(!needs_mode(oflag)); return openat(dirfd, path, oflag); } #ifndef openat64 LIBCAMERA_PUBLIC int openat64(int dirfd, const char *path, int oflag, ...) { mode_t mode = 0; if (needs_mode(oflag)) extract_va_arg(mode_t, mode, oflag); return V4L2CompatManager::instance()->openat(dirfd, path, oflag | O_LARGEFILE, mode); } LIBCAMERA_PUBLIC int __openat64_2(int dirfd, const char *path, int oflag) { assert(!needs_mode(oflag)); return openat64(dirfd, path, oflag); } #endif LIBCAMERA_PUBLIC int dup(int oldfd) { return V4L2CompatManager::instance()->dup(oldfd); } LIBCAMERA_PUBLIC int close(int fd) { return V4L2CompatManager::instance()->close(fd); } LIBCAMERA_PUBLIC void *mmap(void *addr, size_t length, int prot, int flags, int fd, off_t offset) { return V4L2CompatManager::instance()->mmap(addr, length, prot, flags, fd, offset); } #ifndef mmap64 LIBCAMERA_PUBLIC void *mmap64(void *addr, size_t length, int prot, int flags, int fd, off64_t offset) { return V4L2CompatManager::instance()->mmap(addr, length, prot, flags, fd, offset); } #endif LIBCAMERA_PUBLIC int munmap(void *addr, size_t length) { return V4L2CompatManager::instance()->munmap(addr, length); } LIBCAMERA_PUBLIC int ioctl(int fd, unsigned long request, ...) { void *arg; extract_va_arg(void *, arg, request); return V4L2CompatManager::instance()->ioctl(fd, request, arg); } }


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