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author | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2016-09-08 06:07:47 -0300 |
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committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2016-09-09 09:56:03 -0300 |
commit | 9281f251bebe5618070e03041a7cdb81162b337d (patch) | |
tree | 0e8bbe1114d4e72c7d3a9df971d77a8cf3c79893 /Documentation/media/uapi/v4l/libv4l-introduction.rst | |
parent | 39b6b9005f6cd2ef2f6c554bb2da176ca87aab0d (diff) | |
download | op-kernel-dev-9281f251bebe5618070e03041a7cdb81162b337d.zip op-kernel-dev-9281f251bebe5618070e03041a7cdb81162b337d.tar.gz |
[media] libv4l-introdution.rst: fix function definitions
c:type is not the right tag for function definitions.
Replace them by .. c:function::
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'Documentation/media/uapi/v4l/libv4l-introduction.rst')
-rw-r--r-- | Documentation/media/uapi/v4l/libv4l-introduction.rst | 62 |
1 files changed, 35 insertions, 27 deletions
diff --git a/Documentation/media/uapi/v4l/libv4l-introduction.rst b/Documentation/media/uapi/v4l/libv4l-introduction.rst index 61d085f..1c1278d 100644 --- a/Documentation/media/uapi/v4l/libv4l-introduction.rst +++ b/Documentation/media/uapi/v4l/libv4l-introduction.rst @@ -116,45 +116,53 @@ The common file operation methods are provided by libv4l. Those functions operate just like glibc open/close/dup/ioctl/read/mmap/munmap: -- :c:type:`int v4l2_open(const char *file, int oflag, ...)` - operates like the - standard :ref:`open() <func-open>` function. +.. c:function:: int v4l2_open(const char *file, int oflag, ...) -- :c:type:`int v4l2_close(int fd)` - operates like the standard - :ref:`close() <func-close>` function. + operates like the standard :ref:`open() <func-open>` function. -- :c:type:`int v4l2_dup(int fd)` - operates like the standard dup() function, - duplicating a file handler. +.. c:function:: int v4l2_close(int fd) -- :c:type:`int v4l2_ioctl (int fd, unsigned long int request, ...)` - operates - like the standard :ref:`ioctl() <func-ioctl>` function. + operates like the standard :ref:`close() <func-close>` function. -- :c:type:`int v4l2_read (int fd, void* buffer, size_t n)` - operates like the - standard :ref:`read() <func-read>` function. +.. c:function:: int v4l2_dup(int fd) -- :c:type:`void v4l2_mmap(void *start, size_t length, int prot, int flags, int - fd, int64_t offset);` - operates like the standard - :ref:`mmap() <func-mmap>` function. + operates like the standard dup() function, duplicating a file handler. -- :c:type:`int v4l2_munmap(void *_start, size_t length);` - operates like the - standard :ref:`munmap() <func-munmap>` function. +.. c:function:: int v4l2_ioctl (int fd, unsigned long int request, ...) + + operates like the standard :ref:`ioctl() <func-ioctl>` function. + +.. c:function:: int v4l2_read (int fd, void* buffer, size_t n) + + operates like the standard :ref:`read() <func-read>` function. + +.. c:function:: void v4l2_mmap(void *start, size_t length, int prot, int flags, int fd, int64_t offset); + + operates like the standard :ref:`mmap() <func-mmap>` function. + +.. c:function:: int v4l2_munmap(void *_start, size_t length); + operates like the standard :ref:`munmap() <func-munmap>` function. Those functions provide additional control: -- :c:type:`int v4l2_fd_open(int fd, int v4l2_flags)` - opens an already opened - fd for further use through v4l2lib and possibly modify libv4l2's - default behavior through the v4l2_flags argument. Currently, - v4l2_flags can be ``V4L2_DISABLE_CONVERSION``, to disable format - conversion. +.. c:function:: int v4l2_fd_open(int fd, int v4l2_flags) + + opens an already opened fd for further use through v4l2lib and possibly + modify libv4l2's default behavior through the v4l2_flags argument. + Currently, v4l2_flags can be ``V4L2_DISABLE_CONVERSION``, to disable + format conversion. -- :c:type:`int v4l2_set_control(int fd, int cid, int value)` - This function - takes a value of 0 - 65535, and then scales that range to the actual - range of the given v4l control id, and then if the cid exists and is +.. c:function:: int v4l2_set_control(int fd, int cid, int value) + + This function takes a value of 0 - 65535, and then scales that range to the + actual range of the given v4l control id, and then if the cid exists and is not locked sets the cid to the scaled value. -- :c:type:`int v4l2_get_control(int fd, int cid)` - This function returns a - value of 0 - 65535, scaled to from the actual range of the given v4l - control id. when the cid does not exist, could not be accessed for - some reason, or some error occurred 0 is returned. +.. c:function:: int v4l2_get_control(int fd, int cid) + + This function returns a value of 0 - 65535, scaled to from the actual range + of the given v4l control id. when the cid does not exist, could not be + accessed for some reason, or some error occurred 0 is returned. v4l1compat.so wrapper library |