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Simplify confusing code.

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This commit is contained in:
Antoine Cellerier 2008-10-25 02:58:29 +02:00
parent 8dc892540f
commit 6409dc01f6
1 changed files with 12 additions and 5 deletions
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17
modules/access/v4l2/v4l2.c
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@ -70,7 +70,6 @@
#ifdef HAVE_LIBV4L2 #ifdef HAVE_LIBV4L2
# include <libv4l2.h> # include <libv4l2.h>
#else #else
# define v4l2_fd_open(fd, flags) (fd)
# define v4l2_close close # define v4l2_close close
# define v4l2_dup dup # define v4l2_dup dup
# define v4l2_ioctl ioctl # define v4l2_ioctl ioctl
@ -1845,15 +1844,19 @@ static int OpenVideoDev( vlc_object_t *p_obj, demux_sys_t *p_sys, bool b_demux )
goto open_failed; goto open_failed;
} }
#ifdef HAVE_LIBV4L2
/* Note the v4l2_xxx functions are designed so that if they get passed an /* Note the v4l2_xxx functions are designed so that if they get passed an
unknown fd, the will behave exactly as their regular xxx counterparts, unknown fd, the will behave exactly as their regular xxx counterparts,
so if v4l2_fd_open fails, we continue as normal (missing the libv4l2 so if v4l2_fd_open fails, we continue as normal (missing the libv4l2
custom cam format to normal formats conversion). Chances are big we will custom cam format to normal formats conversion). Chances are big we will
still fail then though, as normally v4l2_fd_open only fails if the still fail then though, as normally v4l2_fd_open only fails if the
device is not a v4l2 device. */ device is not a v4l2 device. */
libv4l2_fd = v4l2_fd_open(i_fd, V4L2_ENABLE_ENUM_FMT_EMULATION); libv4l2_fd = v4l2_fd_open( i_fd, V4L2_ENABLE_ENUM_FMT_EMULATION );
if (libv4l2_fd != -1) if( libv4l2_fd != -1 )
i_fd = libv4l2_fd; i_fd = libv4l2_fd;
#else
libv4l2_fd = i_fd;
#endif
/* Tune the tuner */ /* Tune the tuner */
if( p_sys->i_frequency >= 0 ) if( p_sys->i_frequency >= 0 )
@ -2574,15 +2577,19 @@ static bool ProbeVideoDev( vlc_object_t *p_obj, demux_sys_t *p_sys,
goto open_failed; goto open_failed;
} }
#ifdef HAVE_LIBV4L2
/* Note the v4l2_xxx functions are designed so that if they get passed an /* Note the v4l2_xxx functions are designed so that if they get passed an
unknown fd, the will behave exactly as their regular xxx counterparts, unknown fd, the will behave exactly as their regular xxx counterparts,
so if v4l2_fd_open fails, we continue as normal (missing the libv4l2 so if v4l2_fd_open fails, we continue as normal (missing the libv4l2
custom cam format to normal formats conversion). Chances are big we will custom cam format to normal formats conversion). Chances are big we will
still fail then though, as normally v4l2_fd_open only fails if the still fail then though, as normally v4l2_fd_open only fails if the
device is not a v4l2 device. */ device is not a v4l2 device. */
libv4l2_fd = v4l2_fd_open(i_fd, V4L2_ENABLE_ENUM_FMT_EMULATION); libv4l2_fd = v4l2_fd_open( i_fd, V4L2_ENABLE_ENUM_FMT_EMULATION );
if (libv4l2_fd != -1) if( libv4l2_fd != -1 )
i_fd = libv4l2_fd; i_fd = libv4l2_fd;
#else
libv4l2_fd = i_fd;
#endif
/* Get device capabilites */ /* Get device capabilites */