Since codec controls validation comes with its own logic, split off
std_validate for MPEG-2 for better clarity.
Use a shorter name for the validated structure and use the
type-specific pointer to grab it while at it.
Signed-off-by: Paul Kocialkowski <paul.kocialkow...@bootlin.com>
---
drivers/media/v4l2-core/v4l2-ctrls.c | 95 +++++++++++++++-------------
1 file changed, 52 insertions(+), 43 deletions(-)
diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c
b/drivers/media/v4l2-core/v4l2-ctrls.c
index f2b9bdedbf8c..824126267c44 100644
--- a/drivers/media/v4l2-core/v4l2-ctrls.c
+++ b/drivers/media/v4l2-core/v4l2-ctrls.c
@@ -1617,11 +1617,61 @@ static void std_log(const struct v4l2_ctrl *ctrl)
0; \
})
+static int std_validate_mpeg2(const struct v4l2_ctrl *ctrl, u32 idx,
+ union v4l2_ctrl_ptr ptr)
+{
+ struct v4l2_ctrl_mpeg2_slice_params *slice_params =
+ ptr.p_mpeg2_slice_params;
+
+ switch ((u32)ctrl->type) {
+ case V4L2_CTRL_TYPE_MPEG2_SLICE_PARAMS:
+ switch (slice_params->sequence.chroma_format) {
+ case 1: /* 4:2:0 */
+ case 2: /* 4:2:2 */
+ case 3: /* 4:4:4 */
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ switch (slice_params->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 (slice_params->picture.picture_structure) {
+ case 1: /* interlaced top field */
+ case 2: /* interlaced bottom field */
+ case 3: /* progressive */
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ switch (slice_params->picture.picture_coding_type) {
+ case V4L2_MPEG2_PICTURE_CODING_TYPE_I:
+ case V4L2_MPEG2_PICTURE_CODING_TYPE_P:
+ case V4L2_MPEG2_PICTURE_CODING_TYPE_B:
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+ default:
+ return 0;
+ }
+}
+
/* Validate a new control */
static int std_validate(const struct v4l2_ctrl *ctrl, u32 idx,
union v4l2_ctrl_ptr ptr)
{
- struct v4l2_ctrl_mpeg2_slice_params *p_mpeg2_slice_params;
size_t len;
u64 offset;
s64 val;
@@ -1685,49 +1735,8 @@ static int std_validate(const struct v4l2_ctrl *ctrl,
u32 idx,
return 0;
case V4L2_CTRL_TYPE_MPEG2_SLICE_PARAMS:
- p_mpeg2_slice_params = ptr.p;
-
- switch (p_mpeg2_slice_params->sequence.chroma_format) {
- case 1: /* 4:2:0 */
- case 2: /* 4:2:2 */
- case 3: /* 4:4:4 */
- break;
- default:
- return -EINVAL;
- }
-
- switch (p_mpeg2_slice_params->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_slice_params->picture.picture_structure) {
- case 1: /* interlaced top field */
- case 2: /* interlaced bottom field */
- case 3: /* progressive */
- break;
- default:
- return -EINVAL;
- }
-
- switch (p_mpeg2_slice_params->picture.picture_coding_type) {
- case V4L2_MPEG2_PICTURE_CODING_TYPE_I:
- case V4L2_MPEG2_PICTURE_CODING_TYPE_P:
- case V4L2_MPEG2_PICTURE_CODING_TYPE_B:
- break;
- default:
- return -EINVAL;
- }
-
- return 0;
-
case V4L2_CTRL_TYPE_MPEG2_QUANTIZATION:
- return 0;
+ return std_validate_mpeg2(ctrl, idx, ptr);
case V4L2_CTRL_TYPE_FWHT_PARAMS:
return 0;
--
2.21.0
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