^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) .. c:namespace:: V4L
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) .. _VIDIOC_DECODER_CMD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) ************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) ioctl VIDIOC_DECODER_CMD, VIDIOC_TRY_DECODER_CMD
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) ************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) Name
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) ====
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) VIDIOC_DECODER_CMD - VIDIOC_TRY_DECODER_CMD - Execute an decoder command
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) Synopsis
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) ========
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) .. c:macro:: VIDIOC_DECODER_CMD
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) ``int ioctl(int fd, VIDIOC_DECODER_CMD, struct v4l2_decoder_cmd *argp)``
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) .. c:macro:: VIDIOC_TRY_DECODER_CMD
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) ``int ioctl(int fd, VIDIOC_TRY_DECODER_CMD, struct v4l2_decoder_cmd *argp)``
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) Arguments
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) =========
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) ``fd``
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) File descriptor returned by :c:func:`open()`.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) ``argp``
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) pointer to struct :c:type:`v4l2_decoder_cmd`.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) Description
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) ===========
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) These ioctls control an audio/video (usually MPEG-) decoder.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) ``VIDIOC_DECODER_CMD`` sends a command to the decoder,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) ``VIDIOC_TRY_DECODER_CMD`` can be used to try a command without actually
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) executing it. To send a command applications must initialize all fields
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) of a struct :c:type:`v4l2_decoder_cmd` and call
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) ``VIDIOC_DECODER_CMD`` or ``VIDIOC_TRY_DECODER_CMD`` with a pointer to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) this structure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) The ``cmd`` field must contain the command code. Some commands use the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) ``flags`` field for additional information.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) A :c:func:`write()` or :ref:`VIDIOC_STREAMON`
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) call sends an implicit START command to the decoder if it has not been
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) started yet. Applies to both queues of mem2mem decoders.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) A :c:func:`close()` or :ref:`VIDIOC_STREAMOFF <VIDIOC_STREAMON>`
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) call of a streaming file descriptor sends an implicit immediate STOP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) command to the decoder, and all buffered data is discarded. Applies to both
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) queues of mem2mem decoders.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) In principle, these ioctls are optional, not all drivers may support them. They were
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) introduced in Linux 3.3. They are, however, mandatory for stateful mem2mem decoders
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) (as further documented in :ref:`decoder`).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) .. tabularcolumns:: |p{1.1cm}|p{2.4cm}|p{1.2cm}|p{1.6cm}|p{10.6cm}|
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) .. c:type:: v4l2_decoder_cmd
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) .. cssclass:: longtable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) .. flat-table:: struct v4l2_decoder_cmd
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) :header-rows: 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) :stub-columns: 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) :widths: 1 1 1 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) * - __u32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) - ``cmd``
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) - The decoder command, see :ref:`decoder-cmds`.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) * - __u32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) - ``flags``
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) - Flags to go with the command. If no flags are defined for this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) command, drivers and applications must set this field to zero.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) * - union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) - (anonymous)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) * - struct
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) - ``start``
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) - Structure containing additional data for the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) ``V4L2_DEC_CMD_START`` command.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) * -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) - __s32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) - ``speed``
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) - Playback speed and direction. The playback speed is defined as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) ``speed``/1000 of the normal speed. So 1000 is normal playback.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) Negative numbers denote reverse playback, so -1000 does reverse
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) playback at normal speed. Speeds -1, 0 and 1 have special
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) meanings: speed 0 is shorthand for 1000 (normal playback). A speed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) of 1 steps just one frame forward, a speed of -1 steps just one
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) frame back.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) * -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) - __u32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) - ``format``
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) - Format restrictions. This field is set by the driver, not the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) application. Possible values are ``V4L2_DEC_START_FMT_NONE`` if
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) there are no format restrictions or ``V4L2_DEC_START_FMT_GOP`` if
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) the decoder operates on full GOPs (*Group Of Pictures*). This is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) usually the case for reverse playback: the decoder needs full
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) GOPs, which it can then play in reverse order. So to implement
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) reverse playback the application must feed the decoder the last
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) GOP in the video file, then the GOP before that, etc. etc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) * - struct
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) - ``stop``
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) - Structure containing additional data for the ``V4L2_DEC_CMD_STOP``
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) command.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) * -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) - __u64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) - ``pts``
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) - Stop playback at this ``pts`` or immediately if the playback is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) already past that timestamp. Leave to 0 if you want to stop after
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) the last frame was decoded.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) * - struct
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) - ``raw``
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) * -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) - __u32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) - ``data``\ [16]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) - Reserved for future extensions. Drivers and applications must set
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) the array to zero.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) * - }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) .. tabularcolumns:: |p{5.6cm}|p{0.6cm}|p{11.3cm}|
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) .. _decoder-cmds:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) .. flat-table:: Decoder Commands
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) :header-rows: 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) :stub-columns: 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) :widths: 56 6 113
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) * - ``V4L2_DEC_CMD_START``
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) - 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) - Start the decoder. When the decoder is already running or paused,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) this command will just change the playback speed. That means that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) calling ``V4L2_DEC_CMD_START`` when the decoder was paused will
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) *not* resume the decoder. You have to explicitly call
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) ``V4L2_DEC_CMD_RESUME`` for that. This command has one flag:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) ``V4L2_DEC_CMD_START_MUTE_AUDIO``. If set, then audio will be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) muted when playing back at a non-standard speed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) For a device implementing the :ref:`decoder`, once the drain sequence
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) is initiated with the ``V4L2_DEC_CMD_STOP`` command, it must be driven
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) to completion before this command can be invoked. Any attempt to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) invoke the command while the drain sequence is in progress will trigger
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) an ``EBUSY`` error code. The command may be also used to restart the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) decoder in case of an implicit stop initiated by the decoder itself,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) without the ``V4L2_DEC_CMD_STOP`` being called explicitly. See
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) :ref:`decoder` for more details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) * - ``V4L2_DEC_CMD_STOP``
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) - 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) - Stop the decoder. When the decoder is already stopped, this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) command does nothing. This command has two flags: if
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) ``V4L2_DEC_CMD_STOP_TO_BLACK`` is set, then the decoder will set
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) the picture to black after it stopped decoding. Otherwise the last
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) image will repeat. If
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) ``V4L2_DEC_CMD_STOP_IMMEDIATELY`` is set, then the decoder stops
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) immediately (ignoring the ``pts`` value), otherwise it will keep
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) decoding until timestamp >= pts or until the last of the pending
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) data from its internal buffers was decoded.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) For a device implementing the :ref:`decoder`, the command will initiate
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) the drain sequence as documented in :ref:`decoder`. No flags or other
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) arguments are accepted in this case. Any attempt to invoke the command
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) again before the sequence completes will trigger an ``EBUSY`` error
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) code.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) * - ``V4L2_DEC_CMD_PAUSE``
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) - 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) - Pause the decoder. When the decoder has not been started yet, the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) driver will return an ``EPERM`` error code. When the decoder is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) already paused, this command does nothing. This command has one
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) flag: if ``V4L2_DEC_CMD_PAUSE_TO_BLACK`` is set, then set the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) decoder output to black when paused.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) * - ``V4L2_DEC_CMD_RESUME``
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) - 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) - Resume decoding after a PAUSE command. When the decoder has not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) been started yet, the driver will return an ``EPERM`` error code. When
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) the decoder is already running, this command does nothing. No
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) flags are defined for this command.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) * - ``V4L2_DEC_CMD_FLUSH``
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) - 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) - Flush any held capture buffers. Only valid for stateless decoders.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) This command is typically used when the application reached the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) end of the stream and the last output buffer had the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) ``V4L2_BUF_FLAG_M2M_HOLD_CAPTURE_BUF`` flag set. This would prevent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) dequeueing the capture buffer containing the last decoded frame.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) So this command can be used to explicitly flush that final decoded
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) frame. This command does nothing if there are no held capture buffers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) Return Value
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) ============
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) On success 0 is returned, on error -1 and the ``errno`` variable is set
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) appropriately. The generic error codes are described at the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) :ref:`Generic Error Codes <gen-errors>` chapter.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) EBUSY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) A drain sequence of a device implementing the :ref:`decoder` is still in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) progress. It is not allowed to issue another decoder command until it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) completes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) EINVAL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) The ``cmd`` field is invalid.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) EPERM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) The application sent a PAUSE or RESUME command when the decoder was
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) not running.
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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