libcamera/libcamera.git - libcamera official repository

path: root/src/android/mm/generic_camera_buffer.cpp

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author	Nícolas F. R. A. Prado <nfraprado@collabora.com>	2021-07-02 09:21:10 -0300
committer	Jacopo Mondi <jacopo@jmondi.org>	2021-07-06 12:40:41 +0200
commit	b0bf6b0aa90e2ce94ec77e389eea0e5849f2eaec (patch)
tree	64973d1d420cd5db0442f5f595f292fddc26b6c1 /src/android/mm/generic_camera_buffer.cpp
parent	d7415bc4e46fe8aa25a495c79516d9882a35a5aa (diff)

libcamera: camera: Make stop() idempotent

Make Camera::stop() idempotent so that it can be called in any state and consecutive times. When called in any state other than CameraRunning, it is a no-op. This simplifies the cleanup path for applications. Signed-off-by: Nícolas F. R. A. Prado <nfraprado@collabora.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>

Diffstat (limited to 'src/android/mm/generic_camera_buffer.cpp')

0 files changed, 0 insertions, 0 deletions

class="hl com">/* SPDX-License-Identifier: LGPL-2.1-or-later */ /* * Copyright (C) 2019, Google Inc. * * v4l2_compat.cpp - V4L2 compatibility layer */ #include "v4l2_compat_manager.h" #include <errno.h> #include <fcntl.h> #include <stdarg.h> #include <sys/mman.h> #include <sys/stat.h> #include <sys/types.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); \ } extern "C" { LIBCAMERA_PUBLIC int open(const char *path, int oflag, ...) { mode_t mode = 0; if (oflag & O_CREAT || oflag & O_TMPFILE) 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) { return open(path, oflag); } #ifndef open64 LIBCAMERA_PUBLIC int open64(const char *path, int oflag, ...) { mode_t mode = 0; if (oflag & O_CREAT || oflag & O_TMPFILE) 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) { return open(path, oflag); } #endif LIBCAMERA_PUBLIC int openat(int dirfd, const char *path, int oflag, ...) { mode_t mode = 0; if (oflag & O_CREAT || oflag & O_TMPFILE) 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) { return openat(dirfd, path, oflag); } #ifndef openat64 LIBCAMERA_PUBLIC int openat64(int dirfd, const char *path, int oflag, ...) { mode_t mode = 0; if (oflag & O_CREAT || oflag & O_TMPFILE) 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) { return openat(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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