On 03/19/2018 03:29 PM, Sylwester Nawrocki wrote:
> When value of V4L2_CID_MPEG_VIDEO_HEVC_MIN_QP or V4L2_CID_MPEG_VIDEO_HEVC_MAX_QP
> controls is changed we should update range of a set of HEVC quantization
> parameter v4l2 controls as specified in the HEVC controls documentation.
>
> Signed-off-by: Sylwester Nawrocki <s.nawrocki@xxxxxxxxxxx>
Acked-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>
Thanks!
Hans
> ---
> drivers/media/platform/s5p-mfc/s5p_mfc_enc.c | 40 ++++++++++++++++++++++++++++
> 1 file changed, 40 insertions(+)
>
> diff --git a/drivers/media/platform/s5p-mfc/s5p_mfc_enc.c b/drivers/media/platform/s5p-mfc/s5p_mfc_enc.c
> index 6c80ebc5dbcc..810dabe2f1b9 100644
> --- a/drivers/media/platform/s5p-mfc/s5p_mfc_enc.c
> +++ b/drivers/media/platform/s5p-mfc/s5p_mfc_enc.c
> @@ -1773,6 +1773,42 @@ static inline int vui_sar_idc(enum v4l2_mpeg_video_h264_vui_sar_idc sar)
> return t[sar];
> }
>
> +/*
> + * Update range of all HEVC quantization parameter controls that depend on the
> + * V4L2_CID_MPEG_VIDEO_HEVC_MIN_QP, V4L2_CID_MPEG_VIDEO_HEVC_MAX_QP controls.
> + */
> +static void __enc_update_hevc_qp_ctrls_range(struct s5p_mfc_ctx *ctx,
> + int min, int max)
> +{
> + static const int __hevc_qp_ctrls[] = {
> + V4L2_CID_MPEG_VIDEO_HEVC_I_FRAME_QP,
> + V4L2_CID_MPEG_VIDEO_HEVC_P_FRAME_QP,
> + V4L2_CID_MPEG_VIDEO_HEVC_B_FRAME_QP,
> + V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L0_QP,
> + V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L1_QP,
> + V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L2_QP,
> + V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L3_QP,
> + V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L4_QP,
> + V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L5_QP,
> + V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L6_QP,
> + };
> + struct v4l2_ctrl *ctrl = NULL;
> + int i, j;
> +
> + for (i = 0; i < ARRAY_SIZE(__hevc_qp_ctrls); i++) {
> + for (j = 0; j < ARRAY_SIZE(ctx->ctrls); j++) {
> + if (ctx->ctrls[j]->id == __hevc_qp_ctrls[i]) {
> + ctrl = ctx->ctrls[j];
> + break;
> + }
> + }
> + if (WARN_ON(!ctrl))
> + break;
> +
> + __v4l2_ctrl_modify_range(ctrl, min, max, ctrl->step, min);
> + }
> +}
> +
> static int s5p_mfc_enc_s_ctrl(struct v4l2_ctrl *ctrl)
> {
> struct s5p_mfc_ctx *ctx = ctrl_to_ctx(ctrl);
> @@ -2038,9 +2074,13 @@ static int s5p_mfc_enc_s_ctrl(struct v4l2_ctrl *ctrl)
> break;
> case V4L2_CID_MPEG_VIDEO_HEVC_MIN_QP:
> p->codec.hevc.rc_min_qp = ctrl->val;
> + __enc_update_hevc_qp_ctrls_range(ctx, ctrl->val,
> + p->codec.hevc.rc_max_qp);
> break;
> case V4L2_CID_MPEG_VIDEO_HEVC_MAX_QP:
> p->codec.hevc.rc_max_qp = ctrl->val;
> + __enc_update_hevc_qp_ctrls_range(ctx, p->codec.hevc.rc_min_qp,
> + ctrl->val);
> break;
> case V4L2_CID_MPEG_VIDEO_HEVC_LEVEL:
> p->codec.hevc.level_v4l2 = ctrl->val;
>
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