merge: http://www.linuxtv.org/hg/~tmerle/v4l2-library

From: Mauro Carvalho Chehab <mchehab@infradead.org>

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 117 insertions, 0 deletions

diff --git a/v4l2-apps/lib/libv4l/libv4l1/v4l1compat.c b/v4l2-apps/lib/libv4l/libv4l1/v4l1compat.c
new file mode 100644
index 000000000..db3a0027b
--- /dev/null
+++ b/v4l2-apps/lib/libv4l/libv4l1/v4l1compat.c
@@ -0,0 +1,117 @@
+/*
+# open/close/ioctl/mmap/munmap library call wrapper doing v4l1 api emulation
+# for v4l2 devices
+
+#             (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 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 <stdlib.h>
+#include <stdarg.h>
+#include <fcntl.h>
+#include <libv4l1.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
+
+int open (const char *file, int oflag, ...)
+{
+  int fd;
+
+  if (oflag & O_CREAT)
+  {
+    va_list ap;
+    mode_t mode;
+
+    va_start (ap, oflag);
+    mode = va_arg (ap, mode_t);
+
+    fd = v4l1_open(file, oflag, mode);
+
+    va_end(ap);
+  } else
+    fd = v4l1_open(file, oflag);
+
+  return fd;
+}
+
+int open64 (const char *file, int oflag, ...)
+{
+  int fd;
+
+  if (oflag & O_CREAT)
+  {
+    va_list ap;
+    mode_t mode;
+
+    va_start (ap, oflag);
+    mode = va_arg (ap, mode_t);
+
+    fd = v4l1_open(file, oflag | O_LARGEFILE, mode);
+
+    va_end(ap);
+  } else
+    fd = v4l1_open(file, oflag | O_LARGEFILE);
+
+  return fd;
+}
+
+int close(int fd) {
+  return v4l1_close(fd);
+}
+
+int dup(int fd)
+{
+  return v4l1_dup(fd);
+}
+
+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 v4l1_ioctl (fd, request, arg);
+}
+
+ssize_t read(int fd, void* buffer, size_t n)
+{
+  return v4l1_read (fd, buffer, n);
+}
+
+void mmap(void *start, size_t length, int prot, int flags, int fd,
+  __off_t offset)
+{
+  return v4l1_mmap(start, length, prot, flags, fd, offset);
+}
+
+void mmap64(void *start, size_t length, int prot, int flags, int fd,
+  __off64_t offset)
+{
+  return v4l1_mmap(start, length, prot, flags, fd, offset);
+}
+
+int munmap(void *start, size_t length)
+{
+  return v4l1_munmap(start, length);
+}