diff options
Diffstat (limited to 'v4l2-apps/lib/libv4l/libv4l2/v4l2convert.c')
-rw-r--r-- | v4l2-apps/lib/libv4l/libv4l2/v4l2convert.c | 166 |
1 files changed, 0 insertions, 166 deletions
diff --git a/v4l2-apps/lib/libv4l/libv4l2/v4l2convert.c b/v4l2-apps/lib/libv4l/libv4l2/v4l2convert.c deleted file mode 100644 index 307a03ce5..000000000 --- a/v4l2-apps/lib/libv4l/libv4l2/v4l2convert.c +++ /dev/null @@ -1,166 +0,0 @@ -/* -# open/close/ioctl/mmap/munmap library call wrapper doing format conversion -# for v4l2 applications which want to be able to simply capture bgr24 / yuv420 -# from v4l2 devices with more exotic frame formats. - -# (C) 2008 Hans de Goede <j.w.r.degoede@hhs.nl> - -# This program is free software; you can redistribute it and/or modify -# it under the terms of the GNU Lesser General Public License as published by -# the Free Software Foundation; either version 2.1 of the License, or -# (at your option) any later version. -# -# This program is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -# Lesser General Public License for more details. -# -# You should have received a copy of the GNU Lesser General Public License -# along with this program; if not, write to the Free Software -# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA -*/ - -#define _LARGEFILE64_SOURCE 1 - -#include <stdarg.h> -#include <stdlib.h> -#include <syscall.h> -#include <fcntl.h> -#include <string.h> -#include <sys/ioctl.h> -#include <sys/mman.h> -/* These headers are not needed by us, but by linux/videodev2.h, - which is broken on some systems and doesn't include them itself :( */ -#include <sys/time.h> -#include <asm/types.h> -#include <linux/ioctl.h> -/* end broken header workaround includes */ -#include <linux/videodev2.h> -#include <libv4l2.h> - -/* Check that open/read/mmap is not a define */ -#if defined open || defined read || defined mmap -#error open/read/mmap is a prepocessor macro !! -#endif - -#if __GNUC__ >= 4 -#define LIBV4L_PUBLIC __attribute__ ((visibility("default"))) -#else -#define LIBV4L_PUBLIC -#endif - -LIBV4L_PUBLIC int open (const char *file, int oflag, ...) -{ - int fd; - struct v4l2_capability cap; - int v4l_device = 0; - - /* check if we're opening a video4linux2 device */ - if (!strncmp(file, "/dev/video", 10) || !strncmp(file, "/dev/v4l/", 9)) { - /* Some apps open the device read only, but we need rw rights as the - buffers *MUST* be mapped rw */ - oflag = (oflag & ~O_ACCMODE) | O_RDWR; - v4l_device = 1; - } - - /* original open code */ - if (oflag & O_CREAT) - { - va_list ap; - mode_t mode; - - va_start (ap, oflag); - mode = va_arg (ap, mode_t); - - fd = syscall(SYS_open, file, oflag, mode); - - va_end(ap); - } else - fd = syscall(SYS_open, file, oflag); - /* end of original open code */ - - if (fd == -1 || !v4l_device) - return fd; - - /* check that this is an v4l2 device, libv4l2 only supports v4l2 devices */ - if (syscall(SYS_ioctl, fd, VIDIOC_QUERYCAP, &cap)) - return fd; - - /* libv4l2 only adds functionality to capture capable devices */ - if (!(cap.capabilities & V4L2_CAP_VIDEO_CAPTURE)) - return fd; - - /* Try to Register with libv4l2 (in case of failure pass the fd to the - application as is) */ - v4l2_fd_open(fd, V4L2_ENABLE_ENUM_FMT_EMULATION); - - return fd; -} - -LIBV4L_PUBLIC int open64(const char *file, int oflag, ...) -{ - int fd; - - /* original open code */ - if (oflag & O_CREAT) - { - va_list ap; - mode_t mode; - - va_start (ap, oflag); - mode = va_arg (ap, mode_t); - - fd = open(file, oflag | O_LARGEFILE, mode); - - va_end(ap); - } else - fd = open(file, oflag | O_LARGEFILE); - /* end of original open code */ - - return fd; -} - -LIBV4L_PUBLIC int close(int fd) -{ - return v4l2_close(fd); -} - -LIBV4L_PUBLIC int dup(int fd) -{ - return v4l2_dup(fd); -} - -LIBV4L_PUBLIC int ioctl (int fd, unsigned long int request, ...) -{ - void *arg; - va_list ap; - - va_start (ap, request); - arg = va_arg (ap, void *); - va_end (ap); - - return v4l2_ioctl (fd, request, arg); -} - -LIBV4L_PUBLIC ssize_t read (int fd, void* buffer, size_t n) -{ - return v4l2_read (fd, buffer, n); -} - -LIBV4L_PUBLIC void *mmap(void *start, size_t length, int prot, int flags, int fd, - __off_t offset) -{ - return v4l2_mmap(start, length, prot, flags, fd, offset); -} - -LIBV4L_PUBLIC void *mmap64(void *start, size_t length, int prot, int flags, int fd, - __off64_t offset) -{ - return v4l2_mmap(start, length, prot, flags, fd, offset); -} - -LIBV4L_PUBLIC int munmap(void *start, size_t length) -{ - return v4l2_munmap(start, length); -} - |