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| author | Ezequiel Garcia <ezequiel@collabora.com> | 2019-07-11 23:26:43 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2019-07-22 22:13:49 +0300 |
| commit | 298c62d3856111e6ef41c9c00a233aecf2d19651 (patch) | |
| tree | e510c9c87152c2e73018ff1b3fa289968fbc6102 /drivers/media/v4l2-core | |
| parent | a57d6acaf352d91e52271704f45c72e14cd2d98a (diff) | |
| download | linux-298c62d3856111e6ef41c9c00a233aecf2d19651.tar.xz | |
media: v4l2-ctrl: Validate VP8 stateless decoder controls
Only one field needs to be validated: 'num_dct_parts'.
This field is used to iterate over the user-provided array
'dct_part_sizes'.
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
[hverkuil-cisco@xs4all.nl: s -> (s) in zero_padding macro]
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to 'drivers/media/v4l2-core')
| -rw-r--r-- | drivers/media/v4l2-core/v4l2-ctrls.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c b/drivers/media/v4l2-core/v4l2-ctrls.c index b2c9f5816c4a..13236c191796 100644 --- a/drivers/media/v4l2-core/v4l2-ctrls.c +++ b/drivers/media/v4l2-core/v4l2-ctrls.c @@ -1633,10 +1633,15 @@ static void std_log(const struct v4l2_ctrl *ctrl) }) /* Validate a new control */ + +#define zero_padding(s) \ + memset(&(s).padding, 0, sizeof((s).padding)) + static int std_validate_compound(const struct v4l2_ctrl *ctrl, u32 idx, union v4l2_ctrl_ptr ptr) { struct v4l2_ctrl_mpeg2_slice_params *p_mpeg2_slice_params; + struct v4l2_ctrl_vp8_frame_header *p_vp8_frame_header; void *p = ptr.p + idx * ctrl->elem_size; switch ((u32)ctrl->type) { @@ -1696,6 +1701,22 @@ static int std_validate_compound(const struct v4l2_ctrl *ctrl, u32 idx, break; case V4L2_CTRL_TYPE_VP8_FRAME_HEADER: + p_vp8_frame_header = p; + + switch (p_vp8_frame_header->num_dct_parts) { + case 1: + case 2: + case 4: + case 8: + break; + default: + return -EINVAL; + } + zero_padding(p_vp8_frame_header->segment_header); + zero_padding(p_vp8_frame_header->lf_header); + zero_padding(p_vp8_frame_header->quant_header); + zero_padding(p_vp8_frame_header->entropy_header); + zero_padding(p_vp8_frame_header->coder_state); break; default: return -EINVAL; |