media/v4l/hist-v4l2.rst

39 1998-10-02: The ``id`` field was removed from
140    type field selecting the union member as parameter. Purpose is to
153    ``VIDIOC_S_OUTPARM``. A ``type`` field in the new struct v4l2_streamparm
160    introduced and one dropped. The ``catname`` field was replaced by a
161    ``group`` field.
178    until the time in the timestamp field has arrived. I would like to
191    timestamp field to a 64-bit integer, and I will change the
195 8. A ``sequence`` field was added to struct v4l2_buffer. The ``sequence``
196    field counts captured frames, it is ignored by output devices. When a
203 ``reserved1`` field became ``offset``. Previously drivers were required
204 to clear the ``reserved1`` field.
246 struct ``v4l2_fmt`` ``type`` field does not contain
248 the ``offset`` field the ambiguous phrase "rising edge" was changed to
268    transmitted only on the first field. The comment that both ``count``
279    ``reserved2`` field which was previously mentioned only in the
320     changes the ``type`` field became a bit set and was merged into the
321     ``flags`` field. ``V4L2_FLAG_TUNER`` was renamed to
344     field and the ``capability`` field and its only flag
345     ``V4L2_INPUT_CAP_AUDIO`` was replaced by the new ``audioset`` field.
346     Instead of linking one video input to one audio input this field
356 5.  The struct v4l2_audio field ``audio`` was
364     Again for consistency the struct v4l2_audioout field ``audio`` was renamed
367 6.  The struct v4l2_tuner ``input`` field was
368     replaced by an ``index`` field, permitting devices with multiple
372     A ``type`` field was added.
375     ``output`` was replaced by an ``index`` field.
378     field was replaced by a ``tuner`` field containing the respective
379     tuner or modulator index number. A tuner ``type`` field was added
380     and the ``reserved`` field became larger for future extensions
394     ``index`` field was added for
396     :ref:`v4l2_std_id <v4l2-std-id>` field named ``id`` was added as
398     field. The misleading ``framerate`` field was renamed to
425     removed. The ``type`` field changed to type enum v4l2_buf_type and
462 10. In struct v4l2_fmtdesc a enum v4l2_buf_type field named ``type`` was
468     field was removed, assuming applications which recognize the format
476     set the ``bytesperline`` field to zero to get a reasonable default.
477     Since the remaining flags were replaced as well, the ``flags`` field
481     newly added ``field`` field.
505     a newly added ``colorspace`` field, where one of
511     ``type`` field was properly defined as enum v4l2_buf_type. Buffer types
512     changed as mentioned above. A new ``memory`` field of type
517 13. In struct v4l2_buffer the ``type`` field was
519     Buffer types changed as mentioned above. A ``field`` field of type
521     buffer contains a top or bottom field. The old field flags were
523     kernel as planned, the ``timestamp`` field changed back from type
526     of a second memory mapping method the ``offset`` field moved into
527     union ``m``, and a new ``memory`` field of type enum v4l2_memory
549     ``width`` and ``height`` field moved into a ``c`` substructure of
555     ``width`` and ``height`` field moved into a ``w`` substructure as
556     above. A ``field`` field of type enum v4l2_field was added to
557     distinguish between field and frame (interlaced) overlay.
567     ``SAMPLE_FORMAT`` field now contains a four-character-code as used
569     the ``V4L2_VBI_SF_UBYTE`` define. The ``reserved`` field was
573     the ``timeperframe`` field changed from unsigned long to
576     field ``readbuffers`` was added to control the driver behaviour in
595    exactly one tuner whose type field reads ``V4L2_TUNER_RADIO``.
689 1. A new field ``input`` (former ``reserved[0]``) was added to the
691    field is to alternate between video inputs (e. g. cameras) in step
693    the new ``V4L2_BUF_FLAG_INPUT`` flag. The ``flags`` field is no
709    struct v4l2_buffer ``memory`` field. It was
764    field gives the time in seconds, not microseconds.
769 1. The ``clips`` field in struct v4l2_window
796    struct v4l2_audio ``mode`` field is a flags field.
802    applications must initialize the tuner ``type`` field of
834    buffer type field was added replacing a reserved field. Note on
839    initialize the type field and clear the reserved fields now. These
867 1. Two new field orders ``V4L2_FIELD_INTERLACED_TB`` and
876    A new ``global_alpha`` field was added to struct v4l2_window,
883 3. The format of the ``chromakey`` field in struct v4l2_window changed from
1055 2. Added the device_caps field to struct v4l2_capabilities and added
1109 1. Added timestamp types to ``flags`` field in