On Thu, 2017-04-06 at 15:14 +0200, Sylwester Nawrocki wrote: > On 04/06/2017 08:11 AM, Smitha T Murthy wrote: > > @@ -775,6 +832,47 @@ const char *v4l2_ctrl_get_name(u32 id) > > case V4L2_CID_MPEG_VIDEO_VPX_P_FRAME_QP: return "VPX > > P-Frame QP Value"; > > case V4L2_CID_MPEG_VIDEO_VPX_PROFILE: return "VPX > > Profile"; > > > > + /* HEVC controls */ > [...] > > + case V4L2_CID_MPEG_VIDEO_HEVC_LF_SLICE_BOUNDARY: return "HEVC LF > > Across Slice Boundary or Not"; > > Please make sure the names are no longer than 31 characters to avoid > truncation during control enumeration in user space. > Data structures like struct v4l2_queryctrl, struct v4l2_query_ext_ctrl > have only 32 bytes long array dedicated for the control name.
I will try to make the names less than 31 characters long without losing the context. But there are many control names in this file which are longer than 31 characters like V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING_LAYER_QP, V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_REF_PERIOD etc so I assumed it was alright to have such long names. But I will shorten them as per your suggestion. > > > + case V4L2_CID_MPEG_VIDEO_HEVC_HIERARCHICAL_QP: return "HEVC QP > > Values"; > > > + case V4L2_CID_MPEG_VIDEO_HEVC_HIERARCHICAL_CODING_TYPE: return "HEVC > > Hierarchical Coding Type"; > > + case V4L2_CID_MPEG_VIDEO_HEVC_HIERARCHICAL_CODING_LAYER:return "HEVC > > Hierarchical Coding Layer"; > > + case V4L2_CID_MPEG_VIDEO_HEVC_HIERARCHICAL_CODING_LAYER_QP:return "HEVC > > Hierarchical Layer QP"; > > How about s/HIERARCHICAL_/HIER_ for the above 3 control IDs? > Ok I will change it. > > + case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_LAYER0_BITRATE:return "HEVC > > Hierarchical Lay 0 Bit Rate"; > > + case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_LAYER1_BITRATE:return "HEVC > > Hierarchical Lay 1 Bit Rate"; > > + case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_LAYER2_BITRATE:return "HEVC > > Hierarchical Lay 2 Bit Rate"; > > + case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_LAYER3_BITRATE:return "HEVC > > Hierarchical Lay 3 Bit Rate"; > > + case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_LAYER4_BITRATE:return "HEVC > > Hierarchical Lay 4 Bit Rate"; > > + case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_LAYER5_BITRATE:return "HEVC > > Hierarchical Lay 5 Bit Rate"; > > + case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_LAYER6_BITRATE:return "HEVC > > Hierarchical Lay 6 Bit Rate"; > > Using single letter L instead of LAYER would make the control ID shorter > and more consistent with existing controls, e.g. > V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L6_BITRATE. > Ok I will change it. > > + case V4L2_CID_MPEG_VIDEO_HEVC_SIGN_DATA_HIDING: return "HEVC > > Sign Data Hiding"; > > + case V4L2_CID_MPEG_VIDEO_HEVC_GENERAL_PB: return "HEVC > > General PB"; > > + case V4L2_CID_MPEG_VIDEO_HEVC_TEMPORAL_ID: return "HEVC > > Temporal ID"; > > + case V4L2_CID_MPEG_VIDEO_HEVC_STRONG_SMOOTHING: return "HEVC > > Strong Intra Smoothing"; > > + case V4L2_CID_MPEG_VIDEO_HEVC_INTRA_PU_SPLIT: return "HEVC > > Intra PU Split"; > > + case V4L2_CID_MPEG_VIDEO_HEVC_TMV_PREDICTION: return "HEVC > > TMV Prediction"; > > + case V4L2_CID_MPEG_VIDEO_HEVC_MAX_NUM_MERGE_MV_MINUS1: return "HEVC > > Max Number of Candidate MVs"; > > + case V4L2_CID_MPEG_VIDEO_HEVC_WITHOUT_STARTCODE: return "HEVC > > ENC Without Startcode"; > > + case V4L2_CID_MPEG_VIDEO_HEVC_REFRESH_PERIOD: return "HEVC > > Num of I Frame b/w 2 IDR"; > > + case V4L2_CID_MPEG_VIDEO_HEVC_LF_BETA_OFFSET_DIV2: return "HEVC > > Loop Filter Beta Offset"; > > + case V4L2_CID_MPEG_VIDEO_HEVC_LF_TC_OFFSET_DIV2: return "HEVC > > Loop Filter tc Offset"; > > s/tc/Tc or s/tc/TC ? > I will correct it. > > + case V4L2_CID_MPEG_VIDEO_HEVC_SIZE_OF_LENGTH_FIELD: return "HEVC > > Size of Length Field"; > > -- > Thanks, > Sylwester > Thank you for the review. Regards, Smitha
