On 2/15/19 2:05 PM, Dafna Hirschfeld wrote:
> Add structs and definitions needed to implement stateless
> decoder for fwht.
>
> Signed-off-by: Dafna Hirschfeld <dafna3@xxxxxxxxx>
> ---
> drivers/media/platform/vicodec/vicodec-core.c | 12 ++++++++++++
> drivers/media/v4l2-core/v4l2-ctrls.c | 6 ++++++
> include/uapi/linux/v4l2-controls.h | 13 +++++++++++++
> include/uapi/linux/videodev2.h | 1 +
> 4 files changed, 32 insertions(+)
>
> diff --git a/drivers/media/platform/vicodec/vicodec-core.c b/drivers/media/platform/vicodec/vicodec-core.c
> index 5e5bbc99a8bb..79b69faf3983 100644
> --- a/drivers/media/platform/vicodec/vicodec-core.c
> +++ b/drivers/media/platform/vicodec/vicodec-core.c
> @@ -64,6 +64,10 @@ static const struct v4l2_fwht_pixfmt_info pixfmt_fwht = {
> V4L2_PIX_FMT_FWHT, 0, 3, 1, 1, 1, 1, 1, 0, 1
> };
>
> +static const struct v4l2_fwht_pixfmt_info pixfmt_stateless_fwht = {
> + V4L2_PIX_FMT_FWHT_STATELESS, 0, 3, 1, 1, 1, 1, 1, 0, 1
> +};
> +
> static void vicodec_dev_release(struct device *dev)
> {
> }
> @@ -1480,6 +1484,7 @@ static int queue_init(void *priv, struct vb2_queue *src_vq,
> #define VICODEC_CID_CUSTOM_BASE (V4L2_CID_MPEG_BASE | 0xf000)
> #define VICODEC_CID_I_FRAME_QP (VICODEC_CID_CUSTOM_BASE + 0)
> #define VICODEC_CID_P_FRAME_QP (VICODEC_CID_CUSTOM_BASE + 1)
> +#define VICODEC_CID_STATELESS_FWHT (VICODEC_CID_CUSTOM_BASE + 2)
>
> static int vicodec_s_ctrl(struct v4l2_ctrl *ctrl)
> {
> @@ -1526,6 +1531,13 @@ static const struct v4l2_ctrl_config vicodec_ctrl_p_frame = {
> .step = 1,
> };
>
> +static const struct v4l2_ctrl_config vicodec_ctrl_stateless_state = {
> + .id = VICODEC_CID_STATELESS_FWHT,
> + .elem_size = sizeof(struct v4l2_ctrl_fwht_params),
> + .name = "FWHT-Stateless State Params",
> + .type = V4L2_CTRL_TYPE_FWHT_PARAMS,
> +};
> +
> /*
> * File operations
> */
> diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c b/drivers/media/v4l2-core/v4l2-ctrls.c
> index ff75f84011f8..5f2382f3a1a2 100644
> --- a/drivers/media/v4l2-core/v4l2-ctrls.c
> +++ b/drivers/media/v4l2-core/v4l2-ctrls.c
> @@ -1671,6 +1671,9 @@ static int std_validate(const struct v4l2_ctrl *ctrl, u32 idx,
> case V4L2_CTRL_TYPE_MPEG2_QUANTIZATION:
> return 0;
>
> + case V4L2_CTRL_TYPE_FWHT_PARAMS:
> + return 0;
> +
> default:
> return -EINVAL;
> }
> @@ -2251,6 +2254,9 @@ static struct v4l2_ctrl *v4l2_ctrl_new(struct v4l2_ctrl_handler *hdl,
> case V4L2_CTRL_TYPE_MPEG2_QUANTIZATION:
> elem_size = sizeof(struct v4l2_ctrl_mpeg2_quantization);
> break;
> + case V4L2_CTRL_TYPE_FWHT_PARAMS:
> + elem_size = sizeof(struct v4l2_ctrl_fwht_params);
> + break;
> default:
> if (type < V4L2_CTRL_COMPOUND_TYPES)
> elem_size = sizeof(s32);
You also need to fill in the name for this control and fill in the type.
Just search for V4L2_CID_MPEG_VIDEO_MPEG2_SLICE_PARAMS and everywhere there
is a 'case V4L2_CID_MPEG_VIDEO_MPEG2_SLICE_PARAMS' you also need to add a
case for VICODEC_CID_STATELESS_FWHT.
> diff --git a/include/uapi/linux/v4l2-controls.h b/include/uapi/linux/v4l2-controls.h
> index 06479f2fb3ae..0358a3b22391 100644
> --- a/include/uapi/linux/v4l2-controls.h
> +++ b/include/uapi/linux/v4l2-controls.h
> @@ -52,6 +52,7 @@
>
> #include <linux/types.h>
>
> +#define V4L2_CTRL_TYPE_FWHT_PARAMS 0x0105
> /* Control classes */
> #define V4L2_CTRL_CLASS_USER 0x00980000 /* Old-style 'user' controls */
> #define V4L2_CTRL_CLASS_MPEG 0x00990000 /* MPEG-compression controls */
> @@ -1096,4 +1097,16 @@ enum v4l2_detect_md_mode {
> #define V4L2_CID_DETECT_MD_THRESHOLD_GRID (V4L2_CID_DETECT_CLASS_BASE + 3)
> #define V4L2_CID_DETECT_MD_REGION_GRID (V4L2_CID_DETECT_CLASS_BASE + 4)
>
> +struct v4l2_ctrl_fwht_params {
> + __u64 backward_ref_ts;
> + __u32 width;
> + __u32 height;
> + __u32 flags;
> + __u32 colorspace;
> + __u32 xfer_func;
> + __u32 ycbcr_enc;
> + __u32 quantization;
> + __u32 comp_frame_size;
> +};
> +
Hmm, let's do this the same as the cedrus driver does: don't add this to
the public header, instead create an include/media/fwht-ctrls.h header
where the fwht state control and type is defined.
Eventually this will move to the public v4l2-controls.h header, but
stateless codec support is still 'staging quality' and it is a little
bit too soon to make it all public.
> #endif
> diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
> index a78bfdc1df97..6a692114e989 100644
> --- a/include/uapi/linux/videodev2.h
> +++ b/include/uapi/linux/videodev2.h
> @@ -665,6 +665,7 @@ struct v4l2_pix_format {
> #define V4L2_PIX_FMT_VP9 v4l2_fourcc('V', 'P', '9', '0') /* VP9 */
> #define V4L2_PIX_FMT_HEVC v4l2_fourcc('H', 'E', 'V', 'C') /* HEVC aka H.265 */
> #define V4L2_PIX_FMT_FWHT v4l2_fourcc('F', 'W', 'H', 'T') /* Fast Walsh Hadamard Transform (vicodec) */
> +#define V4L2_PIX_FMT_FWHT_STATELESS v4l2_fourcc('S', 'F', 'W', 'H') /* Stateless FWHT (vicodec) */
>
> /* Vendor-specific formats */
> #define V4L2_PIX_FMT_CPIA1 v4l2_fourcc('C', 'P', 'I', 'A') /* cpia1 YUV */
>
Regards,
Hans
