@@ -2986,6 +2986,8 @@ enum v4l2_mpeg_video_hevc_size_of_length_field -
These bitstream parameters are defined according to :ref:`hevc`.
They are described in section 7.4.7 "General slice segment header
semantics" of the specification.
+ This control is a dynamically sized 1-dimensional array,
+ V4L2_CTRL_FLAG_DYNAMIC_ARRAY flag must be set when using it.
.. c:type:: v4l2_ctrl_hevc_slice_params
@@ -1510,6 +1510,7 @@ void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type,
break;
case V4L2_CID_STATELESS_HEVC_SLICE_PARAMS:
*type = V4L2_CTRL_TYPE_HEVC_SLICE_PARAMS;
+ *flags |= V4L2_CTRL_FLAG_DYNAMIC_ARRAY;
break;
case V4L2_CID_STATELESS_HEVC_SCALING_MATRIX:
*type = V4L2_CTRL_TYPE_HEVC_SCALING_MATRIX;
@@ -178,6 +178,7 @@ static const struct cedrus_control cedrus_controls[] = {
{
.cfg = {
.id = V4L2_CID_STATELESS_HEVC_SLICE_PARAMS,
+ .dims = { 1 },
},
.codec = CEDRUS_CODEC_H265,
},
@@ -311,9 +311,14 @@ struct v4l2_hevc_pred_weight_table {
#define V4L2_HEVC_SLICE_PARAMS_FLAG_SLICE_LOOP_FILTER_ACROSS_SLICES_ENABLED (1ULL << 8)
#define V4L2_HEVC_SLICE_PARAMS_FLAG_DEPENDENT_SLICE_SEGMENT (1ULL << 9)
+#define V4L2_HEVC_SLICE_MAX_COUNT 600
+
/**
* v4l2_ctrl_hevc_slice_params - HEVC slice parameters
*
+ * This control is a dynamically sized 1-dimensional array,
+ * V4L2_CTRL_FLAG_DYNAMIC_ARRAY flag must be set when using it.
+ *
* @bit_size: size (in bits) of the current slice data
* @data_bit_offset: offset (in bits) to the video data in the current slice data
* @nal_unit_type: specifies the coding type of the slice (B, P or I)
Make explicit that V4L2_CID_STATELESS_HEVC_SLICE_PARAMS control is a dynamic array control type. Some drivers may be able to receive multiple slices in one control to improve decoding performance. Define the max size of the dynamic that can driver can set in .dims = {}. Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com> --- version 7: - Add Jernej patch to set array dims for Cedrus version 6: - Set V4L2_CTRL_FLAG_DYNAMIC_ARRAY flag automatically when using V4L2_CID_STATELESS_HEVC_SLICE_PARAMS control. - Add a define for max slices count Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst | 2 ++ drivers/media/v4l2-core/v4l2-ctrls-defs.c | 1 + drivers/staging/media/sunxi/cedrus/cedrus.c | 1 + include/media/hevc-ctrls.h | 5 +++++ 4 files changed, 9 insertions(+)