Documentation/linux_tv/media/dvb/video-get-frame-count.rst

   1 .. -*- coding: utf-8; mode: rst -*-
   2
   3 .. _VIDEO_GET_FRAME_COUNT:
   4
   5 VIDEO_GET_FRAME_COUNT
   6 =====================
   7
   8 Description
   9 -----------
  10
  11 This ioctl is obsolete. Do not use in new drivers. For V4L2 decoders
  12 this ioctl has been replaced by the ``V4L2_CID_MPEG_VIDEO_DEC_FRAME``
  13 control.
  14
  15 This ioctl call asks the Video Device to return the number of displayed
  16 frames since the decoder was started.
  17
  18 Synopsis
  19 --------
  20
  21 .. c:function:: int ioctl(int fd, int request = VIDEO_GET_FRAME_COUNT, __u64 *pts)
  22
  23 Arguments
  24 ----------
  25
  26
  27
  28 .. flat-table::
  29     :header-rows:  0
  30     :stub-columns: 0
  31
  32
  33     -  .. row 1
  34
  35        -  int fd
  36
  37        -  File descriptor returned by a previous call to open().
  38
  39     -  .. row 2
  40
  41        -  int request
  42
  43        -  Equals VIDEO_GET_FRAME_COUNT for this command.
  44
  45     -  .. row 3
  46
  47        -  __u64 \*pts
  48
  49        -  Returns the number of frames displayed since the decoder was
  50           started.
  51
  52
  53 Return Value
  54 ------------
  55
  56 On success 0 is returned, on error -1 and the ``errno`` variable is set
  57 appropriately. The generic error codes are described at the
  58 :ref:`Generic Error Codes <gen-errors>` chapter.
  59
  60