Re: [PATCH v3 2/2] media: venus: Enable h.264 hierarchical coding

From: Dikshita Agarwal
Date: Tue Sep 03 2024 - 03:06:20 EST

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On 8/15/2024 3:44 AM, Fritz Koenig wrote:
> HFI supports hierarchical P encoding and the ability to specify the
> bitrate for the different layers.
>
> Connect the controls that V4L2 provides and HFI supports.
>
> Signed-off-by: Fritz Koenig <frkoenig@xxxxxxxxxxxx>
> ---
> drivers/media/platform/qcom/venus/core.h | 4 ++
> drivers/media/platform/qcom/venus/venc.c | 85 +++++++++++++++---------
> drivers/media/platform/qcom/venus/venc_ctrls.c | 92 ++++++++++++++++++++++++++
> 3 files changed, 151 insertions(+), 30 deletions(-)
>
> diff --git a/drivers/media/platform/qcom/venus/core.h b/drivers/media/platform/qcom/venus/core.h
> index 55202b89e1b9..fd46a7778d8c 100644
> --- a/drivers/media/platform/qcom/venus/core.h
> +++ b/drivers/media/platform/qcom/venus/core.h
> @@ -26,6 +26,7 @@
> #define VIDC_CLKS_NUM_MAX 4
> #define VIDC_VCODEC_CLKS_NUM_MAX 2
> #define VIDC_RESETS_NUM_MAX 2
> +#define VIDC_MAX_HIER_CODING_LAYER 6
>
> extern int venus_fw_debug;
>
> @@ -255,6 +256,7 @@ struct venc_controls {
> u32 rc_enable;
> u32 const_quality;
> u32 frame_skip_mode;
> + u32 layer_bitrate;
>
> u32 h264_i_period;
> u32 h264_entropy_mode;
> @@ -273,6 +275,8 @@ struct venc_controls {
> s32 h264_loop_filter_alpha;
> s32 h264_loop_filter_beta;
> u32 h264_8x8_transform;
> + u32 h264_hier_layers;
> + u32 h264_hier_layer_bitrate[VIDC_MAX_HIER_CODING_LAYER];
>
> u32 hevc_i_qp;
> u32 hevc_p_qp;
> diff --git a/drivers/media/platform/qcom/venus/venc.c b/drivers/media/platform/qcom/venus/venc.c
> index 3ec2fb8d9fab..af2c92069967 100644
> --- a/drivers/media/platform/qcom/venus/venc.c
> +++ b/drivers/media/platform/qcom/venus/venc.c
> @@ -734,6 +734,29 @@ static int venc_set_properties(struct venus_inst *inst)
> if (ret)
> return ret;
>
> + if (ctr->layer_bitrate) {
> + unsigned int i;
> +
> + ptype = HFI_PROPERTY_PARAM_VENC_HIER_P_MAX_NUM_ENH_LAYER;
> + ret = hfi_session_set_property(inst, ptype, &ctr->h264_hier_layers);
> + if (ret)
> + return ret;
> +
> + ptype = HFI_PROPERTY_CONFIG_VENC_HIER_P_ENH_LAYER;
> + ret = hfi_session_set_property(inst, ptype, &ctr->layer_bitrate);
> + if (ret)
> + return ret;
> +
> + for (i = 0; i < ctr->h264_hier_layers; ++i) {
> + ptype = HFI_PROPERTY_CONFIG_VENC_TARGET_BITRATE;
> + brate.bitrate = ctr->h264_hier_layer_bitrate[i];
> + brate.layer_id = i;
> +
> + ret = hfi_session_set_property(inst, ptype, &brate);
> + if (ret)
> + return ret;
> + }
> + }
> }
>
> if (inst->fmt_cap->pixfmt == V4L2_PIX_FMT_H264 ||
> @@ -823,45 +846,47 @@ static int venc_set_properties(struct venus_inst *inst)
> return ret;
> }
>
> - if (!ctr->bitrate)
> - bitrate = 64000;
> - else
> - bitrate = ctr->bitrate;
> + if (!ctr->layer_bitrate) {
> + if (!ctr->bitrate)
> + bitrate = 64000;
> + else
> + bitrate = ctr->bitrate;
>
> - ptype = HFI_PROPERTY_CONFIG_VENC_TARGET_BITRATE;
> - brate.bitrate = bitrate;
> - brate.layer_id = 0;
> + ptype = HFI_PROPERTY_CONFIG_VENC_TARGET_BITRATE;
> + brate.bitrate = bitrate;
> + brate.layer_id = 0;
>
> - ret = hfi_session_set_property(inst, ptype, &brate);
> - if (ret)
> - return ret;
> + ret = hfi_session_set_property(inst, ptype, &brate);
> + if (ret)
> + return ret;
>
> - if (inst->fmt_cap->pixfmt == V4L2_PIX_FMT_H264 ||
> - inst->fmt_cap->pixfmt == V4L2_PIX_FMT_HEVC) {
> - ptype = HFI_PROPERTY_CONFIG_VENC_SYNC_FRAME_SEQUENCE_HEADER;
> - if (ctr->header_mode == V4L2_MPEG_VIDEO_HEADER_MODE_SEPARATE)
> - en.enable = 0;
> + if (inst->fmt_cap->pixfmt == V4L2_PIX_FMT_H264 ||
> + inst->fmt_cap->pixfmt == V4L2_PIX_FMT_HEVC) {
> + ptype = HFI_PROPERTY_CONFIG_VENC_SYNC_FRAME_SEQUENCE_HEADER;
> + if (ctr->header_mode == V4L2_MPEG_VIDEO_HEADER_MODE_SEPARATE)
why move this ctrl setting inside ctr->layer_bitrate check?
I don't think this depends on layer bitrate.

Thanks,
Dikshita
> + en.enable = 0;
> + else
> + en.enable = 1;
> +
> + ret = hfi_session_set_property(inst, ptype, &en);
> + if (ret)
> + return ret;
> + }
> +
> + if (!ctr->bitrate_peak)
> + bitrate *= 2;
> else
> - en.enable = 1;
> + bitrate = ctr->bitrate_peak;
>
> - ret = hfi_session_set_property(inst, ptype, &en);
> + ptype = HFI_PROPERTY_CONFIG_VENC_MAX_BITRATE;
> + brate.bitrate = bitrate;
> + brate.layer_id = 0;
> +
> + ret = hfi_session_set_property(inst, ptype, &brate);
> if (ret)
> return ret;
> }
>
> - if (!ctr->bitrate_peak)
> - bitrate *= 2;
> - else
> - bitrate = ctr->bitrate_peak;
> -
> - ptype = HFI_PROPERTY_CONFIG_VENC_MAX_BITRATE;
> - brate.bitrate = bitrate;
> - brate.layer_id = 0;
> -
> - ret = hfi_session_set_property(inst, ptype, &brate);
> - if (ret)
> - return ret;
> -
> ptype = HFI_PROPERTY_PARAM_VENC_SESSION_QP;
> if (inst->fmt_cap->pixfmt == V4L2_PIX_FMT_HEVC) {
> quant.qp_i = ctr->hevc_i_qp;
> diff --git a/drivers/media/platform/qcom/venus/venc_ctrls.c b/drivers/media/platform/qcom/venus/venc_ctrls.c
> index 3e1f6f26eddf..e340783a4ef2 100644
> --- a/drivers/media/platform/qcom/venus/venc_ctrls.c
> +++ b/drivers/media/platform/qcom/venus/venc_ctrls.c
> @@ -346,6 +346,55 @@ static int venc_op_s_ctrl(struct v4l2_ctrl *ctrl)
>
> ctr->h264_8x8_transform = ctrl->val;
> break;
> + case V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING_TYPE:
> + if (ctrl->val != V4L2_MPEG_VIDEO_H264_HIERARCHICAL_CODING_P)
> + return -EINVAL;
> + break;
> + case V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING:
> + ctr->layer_bitrate = ctrl->val;
> + break;
> + case V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING_LAYER:
> + if (ctrl->val > VIDC_MAX_HIER_CODING_LAYER)
> + return -EINVAL;
> + ctr->h264_hier_layers = ctrl->val;
> + break;
> + case V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L0_BR:
> + ctr->h264_hier_layer_bitrate[0] = ctrl->val;
> + ret = dynamic_bitrate_update(inst, ctr->h264_hier_layer_bitrate[0], 0);
> + if (ret)
> + return ret;
> + break;
> + case V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L1_BR:
> + ctr->h264_hier_layer_bitrate[1] = ctrl->val;
> + ret = dynamic_bitrate_update(inst, ctr->h264_hier_layer_bitrate[1], 1);
> + if (ret)
> + return ret;
> + break;
> + case V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L2_BR:
> + ctr->h264_hier_layer_bitrate[2] = ctrl->val;
> + ret = dynamic_bitrate_update(inst, ctr->h264_hier_layer_bitrate[2], 2);
> + if (ret)
> + return ret;
> + break;
> + case V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L3_BR:
> + ctr->h264_hier_layer_bitrate[3] = ctrl->val;
> + ret = dynamic_bitrate_update(inst, ctr->h264_hier_layer_bitrate[3], 3);
> + if (ret)
> + return ret;
> + break;
> + case V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L4_BR:
> + ctr->h264_hier_layer_bitrate[4] = ctrl->val;
> + ret = dynamic_bitrate_update(inst, ctr->h264_hier_layer_bitrate[4], 4);
> + if (ret)
> + return ret;
> + break;
> + case V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L5_BR:
> + ctr->h264_hier_layer_bitrate[5] = ctrl->val;
> + ret = dynamic_bitrate_update(inst, ctr->h264_hier_layer_bitrate[5], 5);
> + if (ret)
> + return ret;
> + break;
> +
> default:
> return -EINVAL;
> }
> @@ -628,6 +677,49 @@ int venc_ctrl_init(struct venus_inst *inst)
> V4L2_CID_MPEG_VIDEO_INTRA_REFRESH_PERIOD, 0,
> ((4096 * 2304) >> 8), 1, 0);
>
> + if (IS_V4(inst->core) || IS_V6(inst->core)) {
> + v4l2_ctrl_new_std_menu(&inst->ctrl_handler, &venc_ctrl_ops,
> + V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING_TYPE,
> + V4L2_MPEG_VIDEO_H264_HIERARCHICAL_CODING_P,
> + 1, V4L2_MPEG_VIDEO_H264_HIERARCHICAL_CODING_P);
> +
> + v4l2_ctrl_new_std(&inst->ctrl_handler, &venc_ctrl_ops,
> + V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING, 0, 1, 1, 0);
> +
> + v4l2_ctrl_new_std(&inst->ctrl_handler, &venc_ctrl_ops,
> + V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING_LAYER, 0,
> + VIDC_MAX_HIER_CODING_LAYER, 1, 0);
> +
> + v4l2_ctrl_new_std(&inst->ctrl_handler, &venc_ctrl_ops,
> + V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L0_BR,
> + BITRATE_MIN, BITRATE_MAX, BITRATE_STEP, BITRATE_DEFAULT);
> +
> + v4l2_ctrl_new_std(&inst->ctrl_handler, &venc_ctrl_ops,
> + V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L1_BR,
> + BITRATE_MIN, BITRATE_MAX,
> + BITRATE_STEP, BITRATE_DEFAULT);
> +
> + v4l2_ctrl_new_std(&inst->ctrl_handler, &venc_ctrl_ops,
> + V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L2_BR,
> + BITRATE_MIN, BITRATE_MAX,
> + BITRATE_STEP, BITRATE_DEFAULT);
> +
> + v4l2_ctrl_new_std(&inst->ctrl_handler, &venc_ctrl_ops,
> + V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L3_BR,
> + BITRATE_MIN, BITRATE_MAX,
> + BITRATE_STEP, BITRATE_DEFAULT);
> +
> + v4l2_ctrl_new_std(&inst->ctrl_handler, &venc_ctrl_ops,
> + V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L4_BR,
> + BITRATE_MIN, BITRATE_MAX,
> + BITRATE_STEP, BITRATE_DEFAULT);
> +
> + v4l2_ctrl_new_std(&inst->ctrl_handler, &venc_ctrl_ops,
> + V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L5_BR,
> + BITRATE_MIN, BITRATE_MAX,
> + BITRATE_STEP, BITRATE_DEFAULT);
> + }
> +
> ret = inst->ctrl_handler.error;
> if (ret)
> goto err;
>

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