[RFC 1/2] media: uapi: Add VP8 stateless encoder controls
Andrzej Pietrasiewicz
andrzej.p at collabora.com
Thu Mar 9 04:56:50 PST 2023
Add uAPI for stateless VP8 encoders.
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p at collabora.com>
---
drivers/media/v4l2-core/v4l2-ctrls-core.c | 16 ++++
drivers/media/v4l2-core/v4l2-ctrls-defs.c | 5 ++
include/media/v4l2-ctrls.h | 1 +
include/uapi/linux/v4l2-controls.h | 91 +++++++++++++++++++++++
include/uapi/linux/videodev2.h | 3 +
5 files changed, 116 insertions(+)
diff --git a/drivers/media/v4l2-core/v4l2-ctrls-core.c b/drivers/media/v4l2-core/v4l2-ctrls-core.c
index 29169170880a..5055e75d37bb 100644
--- a/drivers/media/v4l2-core/v4l2-ctrls-core.c
+++ b/drivers/media/v4l2-core/v4l2-ctrls-core.c
@@ -335,6 +335,9 @@ void v4l2_ctrl_type_op_log(const struct v4l2_ctrl *ctrl)
case V4L2_CTRL_TYPE_VP9_FRAME:
pr_cont("VP9_FRAME");
break;
+ case V4L2_CTRL_TYPE_VP8_ENCODE_PARAMS:
+ pr_cont("VP8_ENCODE_PARAMS");
+ break;
case V4L2_CTRL_TYPE_HEVC_SPS:
pr_cont("HEVC_SPS");
break;
@@ -568,6 +571,7 @@ static int std_validate_compound(const struct v4l2_ctrl *ctrl, u32 idx,
struct v4l2_ctrl_hevc_pps *p_hevc_pps;
struct v4l2_ctrl_hdr10_mastering_display *p_hdr10_mastering;
struct v4l2_ctrl_hevc_decode_params *p_hevc_decode_params;
+ struct v4l2_ctrl_vp8_encode_params *p_vp8_encode_params;
struct v4l2_area *area;
void *p = ptr.p + idx * ctrl->elem_size;
unsigned int i;
@@ -918,6 +922,15 @@ static int std_validate_compound(const struct v4l2_ctrl *ctrl, u32 idx,
return -EINVAL;
break;
+ case V4L2_CTRL_TYPE_VP8_ENCODE_PARAMS:
+ p_vp8_encode_params = p;
+ if (p_vp8_encode_params->loop_filter_level > 63)
+ return -EINVAL;
+
+ if (p_vp8_encode_params->sharpness_level > 7)
+ return -EINVAL;
+ break;
+
default:
return -EINVAL;
}
@@ -1602,6 +1615,9 @@ static struct v4l2_ctrl *v4l2_ctrl_new(struct v4l2_ctrl_handler *hdl,
case V4L2_CTRL_TYPE_VP9_FRAME:
elem_size = sizeof(struct v4l2_ctrl_vp9_frame);
break;
+ case V4L2_CTRL_TYPE_VP8_ENCODE_PARAMS:
+ elem_size = sizeof(struct v4l2_ctrl_vp8_encode_params);
+ break;
case V4L2_CTRL_TYPE_AREA:
elem_size = sizeof(struct v4l2_area);
break;
diff --git a/drivers/media/v4l2-core/v4l2-ctrls-defs.c b/drivers/media/v4l2-core/v4l2-ctrls-defs.c
index 564fedee2c88..935bd9a07bad 100644
--- a/drivers/media/v4l2-core/v4l2-ctrls-defs.c
+++ b/drivers/media/v4l2-core/v4l2-ctrls-defs.c
@@ -1182,6 +1182,8 @@ const char *v4l2_ctrl_get_name(u32 id)
case V4L2_CID_STATELESS_MPEG2_QUANTISATION: return "MPEG-2 Quantisation Matrices";
case V4L2_CID_STATELESS_VP9_COMPRESSED_HDR: return "VP9 Probabilities Updates";
case V4L2_CID_STATELESS_VP9_FRAME: return "VP9 Frame Decode Parameters";
+ case V4L2_CID_STATELESS_VP8_ENCODE_PARAMS: return "VP8 Encode Parameters";
+ case V4L2_CID_STATELESS_VP8_ENCODE_QP: return "VP8 Encode QP";
case V4L2_CID_STATELESS_HEVC_SPS: return "HEVC Sequence Parameter Set";
case V4L2_CID_STATELESS_HEVC_PPS: return "HEVC Picture Parameter Set";
case V4L2_CID_STATELESS_HEVC_SLICE_PARAMS: return "HEVC Slice Parameters";
@@ -1531,6 +1533,9 @@ void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type,
case V4L2_CID_STATELESS_VP9_FRAME:
*type = V4L2_CTRL_TYPE_VP9_FRAME;
break;
+ case V4L2_CID_STATELESS_VP8_ENCODE_PARAMS:
+ *type = V4L2_CTRL_TYPE_VP8_ENCODE_PARAMS;
+ break;
case V4L2_CID_UNIT_CELL_SIZE:
*type = V4L2_CTRL_TYPE_AREA;
*flags |= V4L2_CTRL_FLAG_READ_ONLY;
diff --git a/include/media/v4l2-ctrls.h b/include/media/v4l2-ctrls.h
index e59d9a234631..2c4d5d293872 100644
--- a/include/media/v4l2-ctrls.h
+++ b/include/media/v4l2-ctrls.h
@@ -81,6 +81,7 @@ union v4l2_ctrl_ptr {
struct v4l2_ctrl_hdr10_cll_info *p_hdr10_cll;
struct v4l2_ctrl_hdr10_mastering_display *p_hdr10_mastering;
struct v4l2_area *p_area;
+ struct v4l2_ctrl_vp8_encode_params *p_vp8_encode_params;
void *p;
const void *p_const;
};
diff --git a/include/uapi/linux/v4l2-controls.h b/include/uapi/linux/v4l2-controls.h
index b73a8ba7df6c..8b4795a601a5 100644
--- a/include/uapi/linux/v4l2-controls.h
+++ b/include/uapi/linux/v4l2-controls.h
@@ -2750,6 +2750,97 @@ struct v4l2_ctrl_vp9_compressed_hdr {
struct v4l2_vp9_mv_probs mv;
};
+#define V4L2_CID_STATELESS_VP8_ENCODE_PARAMS (V4L2_CID_CODEC_STATELESS_BASE + 501)
+
+#define V4L2_VP8_FRAME_FLAG_SHOWFRAME 0x1
+#define V4L2_VP8_FRAME_FLAG_GOLDEN_REFRESH 0x2
+#define V4L2_VP8_FRAME_FLAG_ALTREF_REFRESH 0x4
+#define V4L2_VP8_FRAME_FLAG_SEGMENT_ENABLED 0x8
+#define V4L2_VP8_FRAME_FLAG_LOOP_FILTER_ADJ_ENABLED 0x10
+#define V4L2_VP8_FRAME_FLAG_REFRESH_ENTROPY_PROBS 0x20
+
+#define V4L2_VP8_FRAME_TYPE_KEYFRAME 0
+#define V4L2_VP8_FRAME_TYPE_INTER 1
+
+#define V4L2_VP8_FRAME_COLOR_SPACE_YUV 0
+#define V4L2_VP8_FRAME_COLOR_SPACE_RESERVED 1
+
+#define V4L2_VP8_FRAME_CLAMPING_REQUIRED 0
+#define V4L2_VP8_FRAME_CLAMPING_NO 1
+
+#define V4L2_VP8_FRAME_FILTER_TYPE_NORMAL 0
+#define V4L2_VP8_FRAME_FILTER_TYPE_SIMPLE 1
+
+#define V4L2_VP8_FRAME_NBR_DCT_PARTITIONS_1 0
+#define V4L2_VP8_FRAME_NBR_DCT_PARTITIONS_2 1
+#define V4L2_VP8_FRAME_NBR_DCT_PARTITIONS_4 2
+#define V4L2_VP8_FRAME_NBR_DCT_PARTITIONS_8 3
+
+#define V4L2_VP8_FRAME_GOLDEN_KEEP 0
+#define V4L2_VP8_FRAME_GOLDEN_LASTFRAME 1
+#define V4L2_VP8_FRAME_GOLDEN_ALTREF 2
+
+#define V4L2_VP8_FRAME_ALTREF_KEEP 0
+#define V4L2_VP8_FRAME_ALTREF_LASTFRAME 1
+#define V4L2_VP8_FRAME_ALTREF_GOLDEN 2
+
+#define V4L2_VP8_FRAME_REF_LAST 0
+#define V4L2_VP8_FRAME_REF_GOLDEN 1
+#define V4L2_VP8_FRAME_REF_ALT 2
+
+/**
+ * struct v4l2_ctrl_vp8_encode_params - VP8 encode parameters
+ * @flags: combination of V4L2_VP8_FRAME_FLAG_{} flags.
+ * @frame_type: specifies the frame type (key or inter).
+ * Set to one of V4L2_VP8_FRAME_TYPE_{}.
+ * @color_space: defines the YUV color space of the sequence.
+ * V4L2_VP8_FRAME_TYPE_INTER frames shall set this field to zero.
+ * Set to one of V4L2_VP8_FRAME_COLOR_SPACE_{}.
+ * @clamping_type: defines pixel value clamping type.
+ * V4L2_VP8_FRAME_TYPE_INTER frames shall set this field to zero.
+ * Set to one of V4L2_VP8_FRAME_CLAMPING_{}.
+ * @loop_filter_type: selects the type of loop filter applied.
+ * Set to one of V4L2_VP8_FRAME_FILTER_TYPE_{}.
+ * @loop_filter_level: sets the strength of the applied loop filter.
+ * Set to a value from the rage 0..63.
+ * @sharpness_level: sets the sharpness of the applied loop filter.
+ * Set to a value from the range 0..7.
+ * @log2_nbr_of_dct_partitions: determines the number of separate partitions
+ * containing the DCT coefficients of macroblocks.
+ * Set to one of V4L2_VP8_FRAME_NBR_DCT_PARTITIONS_{}.
+ * @prob_intra: indicates the probability of an intra macroblock.
+ * Set to a value from the range 0..255.
+ * @prob_last: indicates the probability that the last reference frame is used for inter-prediction.
+ * Set to a value from the range 0..255.
+ * @prob_gf: indicates the probability that the golden reference frame is used for inter-prediction.
+ * Set to a value from the range 0..255.
+ * @copy_buffer_to_golden: specifies the golden frame refresh strategy.
+ * Set to one of V4L2_VP8_FRAME_FLAG_GOLDEN_{}.
+ * @copy_buffer_to_alternate: specifies the atlref frame refresh strategy.
+ * Set to one of V4L2_VP8_FRAME_FLAG_ALTREF_{}.
+ * @reference_type: specifies what kind of reference to use for current inter frame.
+ * V4L2_VP8_FRAME_TYPE_KEYFRAME shall set this field to zero.
+ * Set to one of V4L2_VP8_FRAME_REF_{}.
+ */
+struct v4l2_ctrl_vp8_encode_params {
+ __u32 flags;
+ __u8 frame_type;
+ __u8 color_space;
+ __u8 clamping_type;
+ __u8 loop_filter_type;
+ __u8 loop_filter_level;
+ __u8 sharpness_level;
+ __u8 log2_nbr_of_dct_partitions;
+ __u8 prob_intra;
+ __u8 prob_last;
+ __u8 prob_gf;
+ __u8 copy_buffer_to_golden;
+ __u8 copy_buffer_to_alternate;
+ __u8 reference_type;
+};
+
+#define V4L2_CID_STATELESS_VP8_ENCODE_QP (V4L2_CID_CODEC_STATELESS_BASE + 502)
+
/* MPEG-compression definitions kept for backwards compatibility */
#ifndef __KERNEL__
#define V4L2_CTRL_CLASS_MPEG V4L2_CTRL_CLASS_CODEC
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index 1befd181a4cc..71932ceba248 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -1804,6 +1804,7 @@ struct v4l2_ext_control {
struct v4l2_ctrl_hevc_slice_params __user *p_hevc_slice_params;
struct v4l2_ctrl_hevc_scaling_matrix __user *p_hevc_scaling_matrix;
struct v4l2_ctrl_hevc_decode_params __user *p_hevc_decode_params;
+ struct v4l2_ctrl_vp8_encode_params __user *p_vp8_encode_params;
void __user *ptr;
};
} __attribute__ ((packed));
@@ -1877,6 +1878,8 @@ enum v4l2_ctrl_type {
V4L2_CTRL_TYPE_HEVC_SLICE_PARAMS = 0x0272,
V4L2_CTRL_TYPE_HEVC_SCALING_MATRIX = 0x0273,
V4L2_CTRL_TYPE_HEVC_DECODE_PARAMS = 0x0274,
+
+ V4L2_CTRL_TYPE_VP8_ENCODE_PARAMS = 0x0280,
};
/* Used in the VIDIOC_QUERYCTRL ioctl for querying controls */
--
2.25.1
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