in v4l2-core/v4l2-ctrls-core.c [492:878]
static int std_validate_compound(const struct v4l2_ctrl *ctrl, u32 idx,
union v4l2_ctrl_ptr ptr)
{
struct v4l2_ctrl_mpeg2_sequence *p_mpeg2_sequence;
struct v4l2_ctrl_mpeg2_picture *p_mpeg2_picture;
struct v4l2_ctrl_vp8_frame *p_vp8_frame;
struct v4l2_ctrl_fwht_params *p_fwht_params;
struct v4l2_ctrl_h264_sps *p_h264_sps;
struct v4l2_ctrl_h264_pps *p_h264_pps;
struct v4l2_ctrl_h264_pred_weights *p_h264_pred_weights;
struct v4l2_ctrl_h264_slice_params *p_h264_slice_params;
struct v4l2_ctrl_h264_decode_params *p_h264_dec_params;
struct v4l2_ctrl_hevc_sps *p_hevc_sps;
struct v4l2_ctrl_hevc_pps *p_hevc_pps;
struct v4l2_ctrl_hevc_slice_params *p_hevc_slice_params;
struct v4l2_ctrl_hdr10_mastering_display *p_hdr10_mastering;
struct v4l2_ctrl_hevc_decode_params *p_hevc_decode_params;
struct v4l2_area *area;
void *p = ptr.p + idx * ctrl->elem_size;
unsigned int i;
switch ((u32)ctrl->type) {
case V4L2_CTRL_TYPE_MPEG2_SEQUENCE:
p_mpeg2_sequence = p;
switch (p_mpeg2_sequence->chroma_format) {
case 1: /* 4:2:0 */
case 2: /* 4:2:2 */
case 3: /* 4:4:4 */
break;
default:
return -EINVAL;
}
break;
case V4L2_CTRL_TYPE_MPEG2_PICTURE:
p_mpeg2_picture = p;
switch (p_mpeg2_picture->intra_dc_precision) {
case 0: /* 8 bits */
case 1: /* 9 bits */
case 2: /* 10 bits */
case 3: /* 11 bits */
break;
default:
return -EINVAL;
}
switch (p_mpeg2_picture->picture_structure) {
case V4L2_MPEG2_PIC_TOP_FIELD:
case V4L2_MPEG2_PIC_BOTTOM_FIELD:
case V4L2_MPEG2_PIC_FRAME:
break;
default:
return -EINVAL;
}
switch (p_mpeg2_picture->picture_coding_type) {
case V4L2_MPEG2_PIC_CODING_TYPE_I:
case V4L2_MPEG2_PIC_CODING_TYPE_P:
case V4L2_MPEG2_PIC_CODING_TYPE_B:
break;
default:
return -EINVAL;
}
zero_reserved(*p_mpeg2_picture);
break;
case V4L2_CTRL_TYPE_MPEG2_QUANTISATION:
break;
case V4L2_CTRL_TYPE_FWHT_PARAMS:
p_fwht_params = p;
if (p_fwht_params->version < V4L2_FWHT_VERSION)
return -EINVAL;
if (!p_fwht_params->width || !p_fwht_params->height)
return -EINVAL;
break;
case V4L2_CTRL_TYPE_H264_SPS:
p_h264_sps = p;
/* Some syntax elements are only conditionally valid */
if (p_h264_sps->pic_order_cnt_type != 0) {
p_h264_sps->log2_max_pic_order_cnt_lsb_minus4 = 0;
} else if (p_h264_sps->pic_order_cnt_type != 1) {
p_h264_sps->num_ref_frames_in_pic_order_cnt_cycle = 0;
p_h264_sps->offset_for_non_ref_pic = 0;
p_h264_sps->offset_for_top_to_bottom_field = 0;
memset(&p_h264_sps->offset_for_ref_frame, 0,
sizeof(p_h264_sps->offset_for_ref_frame));
}
if (!V4L2_H264_SPS_HAS_CHROMA_FORMAT(p_h264_sps)) {
p_h264_sps->chroma_format_idc = 1;
p_h264_sps->bit_depth_luma_minus8 = 0;
p_h264_sps->bit_depth_chroma_minus8 = 0;
p_h264_sps->flags &=
~V4L2_H264_SPS_FLAG_QPPRIME_Y_ZERO_TRANSFORM_BYPASS;
if (p_h264_sps->chroma_format_idc < 3)
p_h264_sps->flags &=
~V4L2_H264_SPS_FLAG_SEPARATE_COLOUR_PLANE;
}
if (p_h264_sps->flags & V4L2_H264_SPS_FLAG_FRAME_MBS_ONLY)
p_h264_sps->flags &=
~V4L2_H264_SPS_FLAG_MB_ADAPTIVE_FRAME_FIELD;
/*
* Chroma 4:2:2 format require at least High 4:2:2 profile.
*
* The H264 specification and well-known parser implementations
* use profile-idc values directly, as that is clearer and
* less ambiguous. We do the same here.
*/
if (p_h264_sps->profile_idc < 122 &&
p_h264_sps->chroma_format_idc > 1)
return -EINVAL;
/* Chroma 4:4:4 format require at least High 4:2:2 profile */
if (p_h264_sps->profile_idc < 244 &&
p_h264_sps->chroma_format_idc > 2)
return -EINVAL;
if (p_h264_sps->chroma_format_idc > 3)
return -EINVAL;
if (p_h264_sps->bit_depth_luma_minus8 > 6)
return -EINVAL;
if (p_h264_sps->bit_depth_chroma_minus8 > 6)
return -EINVAL;
if (p_h264_sps->log2_max_frame_num_minus4 > 12)
return -EINVAL;
if (p_h264_sps->pic_order_cnt_type > 2)
return -EINVAL;
if (p_h264_sps->log2_max_pic_order_cnt_lsb_minus4 > 12)
return -EINVAL;
if (p_h264_sps->max_num_ref_frames > V4L2_H264_REF_LIST_LEN)
return -EINVAL;
break;
case V4L2_CTRL_TYPE_H264_PPS:
p_h264_pps = p;
if (p_h264_pps->num_slice_groups_minus1 > 7)
return -EINVAL;
if (p_h264_pps->num_ref_idx_l0_default_active_minus1 >
(V4L2_H264_REF_LIST_LEN - 1))
return -EINVAL;
if (p_h264_pps->num_ref_idx_l1_default_active_minus1 >
(V4L2_H264_REF_LIST_LEN - 1))
return -EINVAL;
if (p_h264_pps->weighted_bipred_idc > 2)
return -EINVAL;
/*
* pic_init_qp_minus26 shall be in the range of
* -(26 + QpBdOffset_y) to +25, inclusive,
* where QpBdOffset_y is 6 * bit_depth_luma_minus8
*/
if (p_h264_pps->pic_init_qp_minus26 < -62 ||
p_h264_pps->pic_init_qp_minus26 > 25)
return -EINVAL;
if (p_h264_pps->pic_init_qs_minus26 < -26 ||
p_h264_pps->pic_init_qs_minus26 > 25)
return -EINVAL;
if (p_h264_pps->chroma_qp_index_offset < -12 ||
p_h264_pps->chroma_qp_index_offset > 12)
return -EINVAL;
if (p_h264_pps->second_chroma_qp_index_offset < -12 ||
p_h264_pps->second_chroma_qp_index_offset > 12)
return -EINVAL;
break;
case V4L2_CTRL_TYPE_H264_SCALING_MATRIX:
break;
case V4L2_CTRL_TYPE_H264_PRED_WEIGHTS:
p_h264_pred_weights = p;
if (p_h264_pred_weights->luma_log2_weight_denom > 7)
return -EINVAL;
if (p_h264_pred_weights->chroma_log2_weight_denom > 7)
return -EINVAL;
break;
case V4L2_CTRL_TYPE_H264_SLICE_PARAMS:
p_h264_slice_params = p;
if (p_h264_slice_params->slice_type != V4L2_H264_SLICE_TYPE_B)
p_h264_slice_params->flags &=
~V4L2_H264_SLICE_FLAG_DIRECT_SPATIAL_MV_PRED;
if (p_h264_slice_params->colour_plane_id > 2)
return -EINVAL;
if (p_h264_slice_params->cabac_init_idc > 2)
return -EINVAL;
if (p_h264_slice_params->disable_deblocking_filter_idc > 2)
return -EINVAL;
if (p_h264_slice_params->slice_alpha_c0_offset_div2 < -6 ||
p_h264_slice_params->slice_alpha_c0_offset_div2 > 6)
return -EINVAL;
if (p_h264_slice_params->slice_beta_offset_div2 < -6 ||
p_h264_slice_params->slice_beta_offset_div2 > 6)
return -EINVAL;
if (p_h264_slice_params->slice_type == V4L2_H264_SLICE_TYPE_I ||
p_h264_slice_params->slice_type == V4L2_H264_SLICE_TYPE_SI)
p_h264_slice_params->num_ref_idx_l0_active_minus1 = 0;
if (p_h264_slice_params->slice_type != V4L2_H264_SLICE_TYPE_B)
p_h264_slice_params->num_ref_idx_l1_active_minus1 = 0;
if (p_h264_slice_params->num_ref_idx_l0_active_minus1 >
(V4L2_H264_REF_LIST_LEN - 1))
return -EINVAL;
if (p_h264_slice_params->num_ref_idx_l1_active_minus1 >
(V4L2_H264_REF_LIST_LEN - 1))
return -EINVAL;
zero_reserved(*p_h264_slice_params);
break;
case V4L2_CTRL_TYPE_H264_DECODE_PARAMS:
p_h264_dec_params = p;
if (p_h264_dec_params->nal_ref_idc > 3)
return -EINVAL;
for (i = 0; i < V4L2_H264_NUM_DPB_ENTRIES; i++) {
struct v4l2_h264_dpb_entry *dpb_entry =
&p_h264_dec_params->dpb[i];
zero_reserved(*dpb_entry);
}
zero_reserved(*p_h264_dec_params);
break;
case V4L2_CTRL_TYPE_VP8_FRAME:
p_vp8_frame = p;
switch (p_vp8_frame->num_dct_parts) {
case 1:
case 2:
case 4:
case 8:
break;
default:
return -EINVAL;
}
zero_padding(p_vp8_frame->segment);
zero_padding(p_vp8_frame->lf);
zero_padding(p_vp8_frame->quant);
zero_padding(p_vp8_frame->entropy);
zero_padding(p_vp8_frame->coder_state);
break;
case V4L2_CTRL_TYPE_HEVC_SPS:
p_hevc_sps = p;
if (!(p_hevc_sps->flags & V4L2_HEVC_SPS_FLAG_PCM_ENABLED)) {
p_hevc_sps->pcm_sample_bit_depth_luma_minus1 = 0;
p_hevc_sps->pcm_sample_bit_depth_chroma_minus1 = 0;
p_hevc_sps->log2_min_pcm_luma_coding_block_size_minus3 = 0;
p_hevc_sps->log2_diff_max_min_pcm_luma_coding_block_size = 0;
}
if (!(p_hevc_sps->flags &
V4L2_HEVC_SPS_FLAG_LONG_TERM_REF_PICS_PRESENT))
p_hevc_sps->num_long_term_ref_pics_sps = 0;
break;
case V4L2_CTRL_TYPE_HEVC_PPS:
p_hevc_pps = p;
if (!(p_hevc_pps->flags &
V4L2_HEVC_PPS_FLAG_CU_QP_DELTA_ENABLED))
p_hevc_pps->diff_cu_qp_delta_depth = 0;
if (!(p_hevc_pps->flags & V4L2_HEVC_PPS_FLAG_TILES_ENABLED)) {
p_hevc_pps->num_tile_columns_minus1 = 0;
p_hevc_pps->num_tile_rows_minus1 = 0;
memset(&p_hevc_pps->column_width_minus1, 0,
sizeof(p_hevc_pps->column_width_minus1));
memset(&p_hevc_pps->row_height_minus1, 0,
sizeof(p_hevc_pps->row_height_minus1));
p_hevc_pps->flags &=
~V4L2_HEVC_PPS_FLAG_LOOP_FILTER_ACROSS_TILES_ENABLED;
}
if (p_hevc_pps->flags &
V4L2_HEVC_PPS_FLAG_PPS_DISABLE_DEBLOCKING_FILTER) {
p_hevc_pps->pps_beta_offset_div2 = 0;
p_hevc_pps->pps_tc_offset_div2 = 0;
}
zero_padding(*p_hevc_pps);
break;
case V4L2_CTRL_TYPE_HEVC_DECODE_PARAMS:
p_hevc_decode_params = p;
if (p_hevc_decode_params->num_active_dpb_entries >
V4L2_HEVC_DPB_ENTRIES_NUM_MAX)
return -EINVAL;
for (i = 0; i < p_hevc_decode_params->num_active_dpb_entries;
i++) {
struct v4l2_hevc_dpb_entry *dpb_entry =
&p_hevc_decode_params->dpb[i];
zero_padding(*dpb_entry);
}
break;
case V4L2_CTRL_TYPE_HEVC_SLICE_PARAMS:
p_hevc_slice_params = p;
zero_padding(p_hevc_slice_params->pred_weight_table);
zero_padding(*p_hevc_slice_params);
break;
case V4L2_CTRL_TYPE_HDR10_CLL_INFO:
break;
case V4L2_CTRL_TYPE_HDR10_MASTERING_DISPLAY:
p_hdr10_mastering = p;
for (i = 0; i < 3; ++i) {
if (p_hdr10_mastering->display_primaries_x[i] <
V4L2_HDR10_MASTERING_PRIMARIES_X_LOW ||
p_hdr10_mastering->display_primaries_x[i] >
V4L2_HDR10_MASTERING_PRIMARIES_X_HIGH ||
p_hdr10_mastering->display_primaries_y[i] <
V4L2_HDR10_MASTERING_PRIMARIES_Y_LOW ||
p_hdr10_mastering->display_primaries_y[i] >
V4L2_HDR10_MASTERING_PRIMARIES_Y_HIGH)
return -EINVAL;
}
if (p_hdr10_mastering->white_point_x <
V4L2_HDR10_MASTERING_WHITE_POINT_X_LOW ||
p_hdr10_mastering->white_point_x >
V4L2_HDR10_MASTERING_WHITE_POINT_X_HIGH ||
p_hdr10_mastering->white_point_y <
V4L2_HDR10_MASTERING_WHITE_POINT_Y_LOW ||
p_hdr10_mastering->white_point_y >
V4L2_HDR10_MASTERING_WHITE_POINT_Y_HIGH)
return -EINVAL;
if (p_hdr10_mastering->max_display_mastering_luminance <
V4L2_HDR10_MASTERING_MAX_LUMA_LOW ||
p_hdr10_mastering->max_display_mastering_luminance >
V4L2_HDR10_MASTERING_MAX_LUMA_HIGH ||
p_hdr10_mastering->min_display_mastering_luminance <
V4L2_HDR10_MASTERING_MIN_LUMA_LOW ||
p_hdr10_mastering->min_display_mastering_luminance >
V4L2_HDR10_MASTERING_MIN_LUMA_HIGH)
return -EINVAL;
/* The following restriction comes from ITU-T Rec. H.265 spec */
if (p_hdr10_mastering->max_display_mastering_luminance ==
V4L2_HDR10_MASTERING_MAX_LUMA_LOW &&
p_hdr10_mastering->min_display_mastering_luminance ==
V4L2_HDR10_MASTERING_MIN_LUMA_HIGH)
return -EINVAL;
break;
case V4L2_CTRL_TYPE_HEVC_SCALING_MATRIX:
break;
case V4L2_CTRL_TYPE_VP9_COMPRESSED_HDR:
return validate_vp9_compressed_hdr(p);
case V4L2_CTRL_TYPE_VP9_FRAME:
return validate_vp9_frame(p);
case V4L2_CTRL_TYPE_AREA:
area = p;
if (!area->width || !area->height)
return -EINVAL;
break;
default:
return -EINVAL;
}
return 0;
}