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Message-ID: <CAAEAJfDQ7TnFwxhWDp3JAHg67MrCoOZm=D4V5o2sJ_9vT6K0sA@mail.gmail.com>
Date:   Thu, 2 Dec 2021 08:11:06 -0300
From:   Ezequiel Garcia <ezequiel@...guardiasur.com.ar>
To:     Benjamin Gaignard <benjamin.gaignard@...labora.com>
Cc:     Philipp Zabel <p.zabel@...gutronix.de>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Greg KH <gregkh@...uxfoundation.org>,
        linux-media <linux-media@...r.kernel.org>,
        "open list:ARM/Rockchip SoC..." <linux-rockchip@...ts.infradead.org>,
        "open list:STAGING SUBSYSTEM" <linux-staging@...ts.linux.dev>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Collabora Kernel ML <kernel@...labora.com>
Subject: Re: [PATCH] media: hantro: Make G2/HEVC use hantro_postproc_ops

Hi Benjamin,

Almost there :-)

On Thu, 2 Dec 2021 at 07:55, Benjamin Gaignard
<benjamin.gaignard@...labora.com> wrote:
>
> Use the postprocessor functions introduced by Hantro G2/VP9 codec series
> and remove duplicated buffer management.
> This allow Hantro G12/HEVC to produce NV12_4L4 and NV12.
>

s/G12/G2

> fluster score is 77/147 which equal to previous score.

s/fluster/Fluster

Can you clarify if this is the HEVC score? While here, can you run VP9
to confirm there are no regressions?

> Note that since NV12_4L2 is the first pixel format enumerated by the
> driver fluster pipeline and it is well converted into I420 by
> GStreamer's videoconvert.
>
> Beauty, Jockey and ShakeNDry bitstreams from UVG set have also been
> tested.
>

Can you add a link to the UVG test suite, so it's clearer?

Also, this patch is v2, so don't forget to prefix the next one as v3,
and add a changelog to it.

Thanks a lot,
Ezequiel

> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@...labora.com>
> ---
>  .../staging/media/hantro/hantro_g2_hevc_dec.c | 25 +++---
>  drivers/staging/media/hantro/hantro_hevc.c    | 79 +++----------------
>  drivers/staging/media/hantro/hantro_hw.h      | 11 +++
>  .../staging/media/hantro/hantro_postproc.c    |  3 +
>  drivers/staging/media/hantro/hantro_v4l2.c    | 19 ++---
>  5 files changed, 41 insertions(+), 96 deletions(-)
>
> diff --git a/drivers/staging/media/hantro/hantro_g2_hevc_dec.c b/drivers/staging/media/hantro/hantro_g2_hevc_dec.c
> index b35f36109a6f..6ef5430b18eb 100644
> --- a/drivers/staging/media/hantro/hantro_g2_hevc_dec.c
> +++ b/drivers/staging/media/hantro/hantro_g2_hevc_dec.c
> @@ -341,6 +341,8 @@ static int set_ref(struct hantro_ctx *ctx)
>         const struct v4l2_hevc_dpb_entry *dpb = decode_params->dpb;
>         dma_addr_t luma_addr, chroma_addr, mv_addr = 0;
>         struct hantro_dev *vpu = ctx->dev;
> +       struct vb2_v4l2_buffer *vb2_dst;
> +       struct hantro_decoded_buffer *dst;
>         size_t cr_offset = hantro_hevc_chroma_offset(sps);
>         size_t mv_offset = hantro_hevc_motion_vectors_offset(sps);
>         u32 max_ref_frames;
> @@ -426,10 +428,15 @@ static int set_ref(struct hantro_ctx *ctx)
>                 hantro_write_addr(vpu, G2_REF_MV_ADDR(i), mv_addr);
>         }
>
> -       luma_addr = hantro_hevc_get_ref_buf(ctx, decode_params->pic_order_cnt_val);
> +       vb2_dst = hantro_get_dst_buf(ctx);
> +       dst = vb2_to_hantro_decoded_buf(&vb2_dst->vb2_buf);
> +       luma_addr = hantro_get_dec_buf_addr(ctx, &dst->base.vb.vb2_buf);
>         if (!luma_addr)
>                 return -ENOMEM;
>
> +       if (hantro_hevc_add_ref_buf(ctx, decode_params->pic_order_cnt_val, luma_addr))
> +               return -EINVAL;
> +
>         chroma_addr = luma_addr + cr_offset;
>         mv_addr = luma_addr + mv_offset;
>
> @@ -456,16 +463,12 @@ static int set_ref(struct hantro_ctx *ctx)
>
>  static void set_buffers(struct hantro_ctx *ctx)
>  {
> -       struct vb2_v4l2_buffer *src_buf, *dst_buf;
> +       struct vb2_v4l2_buffer *src_buf;
>         struct hantro_dev *vpu = ctx->dev;
> -       const struct hantro_hevc_dec_ctrls *ctrls = &ctx->hevc_dec.ctrls;
> -       const struct v4l2_ctrl_hevc_sps *sps = ctrls->sps;
> -       size_t cr_offset = hantro_hevc_chroma_offset(sps);
> -       dma_addr_t src_dma, dst_dma;
> +       dma_addr_t src_dma;
>         u32 src_len, src_buf_len;
>
>         src_buf = hantro_get_src_buf(ctx);
> -       dst_buf = hantro_get_dst_buf(ctx);
>
>         /* Source (stream) buffer. */
>         src_dma = vb2_dma_contig_plane_dma_addr(&src_buf->vb2_buf, 0);
> @@ -478,11 +481,6 @@ static void set_buffers(struct hantro_ctx *ctx)
>         hantro_reg_write(vpu, &g2_strm_start_offset, 0);
>         hantro_reg_write(vpu, &g2_write_mvs_e, 1);
>
> -       /* Destination (decoded frame) buffer. */
> -       dst_dma = hantro_get_dec_buf_addr(ctx, &dst_buf->vb2_buf);
> -
> -       hantro_write_addr(vpu, G2_RS_OUT_LUMA_ADDR, dst_dma);
> -       hantro_write_addr(vpu, G2_RS_OUT_CHROMA_ADDR, dst_dma + cr_offset);
>         hantro_write_addr(vpu, G2_TILE_SIZES_ADDR, ctx->hevc_dec.tile_sizes.dma);
>         hantro_write_addr(vpu, G2_TILE_FILTER_ADDR, ctx->hevc_dec.tile_filter.dma);
>         hantro_write_addr(vpu, G2_TILE_SAO_ADDR, ctx->hevc_dec.tile_sao.dma);
> @@ -575,9 +573,6 @@ int hantro_g2_hevc_dec_run(struct hantro_ctx *ctx)
>         /* Don't compress buffers */
>         hantro_reg_write(vpu, &g2_ref_compress_bypass, 1);
>
> -       /* use NV12 as output format */
> -       hantro_reg_write(vpu, &g2_out_rs_e, 1);
> -
>         /* Bus width and max burst */
>         hantro_reg_write(vpu, &g2_buswidth, BUS_WIDTH_128);
>         hantro_reg_write(vpu, &g2_max_burst, 16);
> diff --git a/drivers/staging/media/hantro/hantro_hevc.c b/drivers/staging/media/hantro/hantro_hevc.c
> index ee03123e7704..b49a41d7ae91 100644
> --- a/drivers/staging/media/hantro/hantro_hevc.c
> +++ b/drivers/staging/media/hantro/hantro_hevc.c
> @@ -44,47 +44,6 @@ size_t hantro_hevc_motion_vectors_offset(const struct v4l2_ctrl_hevc_sps *sps)
>         return ALIGN((cr_offset * 3) / 2, G2_ALIGN);
>  }
>
> -static size_t hantro_hevc_mv_size(const struct v4l2_ctrl_hevc_sps *sps)
> -{
> -       u32 min_cb_log2_size_y = sps->log2_min_luma_coding_block_size_minus3 + 3;
> -       u32 ctb_log2_size_y = min_cb_log2_size_y + sps->log2_diff_max_min_luma_coding_block_size;
> -       u32 pic_width_in_ctbs_y = (sps->pic_width_in_luma_samples + (1 << ctb_log2_size_y) - 1)
> -                                 >> ctb_log2_size_y;
> -       u32 pic_height_in_ctbs_y = (sps->pic_height_in_luma_samples + (1 << ctb_log2_size_y) - 1)
> -                                  >> ctb_log2_size_y;
> -       size_t mv_size;
> -
> -       mv_size = pic_width_in_ctbs_y * pic_height_in_ctbs_y *
> -                 (1 << (2 * (ctb_log2_size_y - 4))) * 16;
> -
> -       vpu_debug(4, "%dx%d (CTBs) %zu MV bytes\n",
> -                 pic_width_in_ctbs_y, pic_height_in_ctbs_y, mv_size);
> -
> -       return mv_size;
> -}
> -
> -static size_t hantro_hevc_ref_size(struct hantro_ctx *ctx)
> -{
> -       const struct hantro_hevc_dec_ctrls *ctrls = &ctx->hevc_dec.ctrls;
> -       const struct v4l2_ctrl_hevc_sps *sps = ctrls->sps;
> -
> -       return hantro_hevc_motion_vectors_offset(sps) + hantro_hevc_mv_size(sps);
> -}
> -
> -static void hantro_hevc_ref_free(struct hantro_ctx *ctx)
> -{
> -       struct hantro_hevc_dec_hw_ctx *hevc_dec = &ctx->hevc_dec;
> -       struct hantro_dev *vpu = ctx->dev;
> -       int i;
> -
> -       for (i = 0;  i < NUM_REF_PICTURES; i++) {
> -               if (hevc_dec->ref_bufs[i].cpu)
> -                       dma_free_coherent(vpu->dev, hevc_dec->ref_bufs[i].size,
> -                                         hevc_dec->ref_bufs[i].cpu,
> -                                         hevc_dec->ref_bufs[i].dma);
> -       }
> -}
> -
>  static void hantro_hevc_ref_init(struct hantro_ctx *ctx)
>  {
>         struct hantro_hevc_dec_hw_ctx *hevc_dec = &ctx->hevc_dec;
> @@ -108,37 +67,25 @@ dma_addr_t hantro_hevc_get_ref_buf(struct hantro_ctx *ctx,
>                 }
>         }
>
> -       /* Allocate a new reference buffer */
> +       return 0;
> +}
> +
> +int hantro_hevc_add_ref_buf(struct hantro_ctx *ctx, int poc, dma_addr_t addr)
> +{
> +       struct hantro_hevc_dec_hw_ctx *hevc_dec = &ctx->hevc_dec;
> +       int i;
> +
> +       /* Add a new reference buffer */
>         for (i = 0; i < NUM_REF_PICTURES; i++) {
>                 if (hevc_dec->ref_bufs_poc[i] == UNUSED_REF) {
> -                       if (!hevc_dec->ref_bufs[i].cpu) {
> -                               struct hantro_dev *vpu = ctx->dev;
> -
> -                               /*
> -                                * Allocate the space needed for the raw data +
> -                                * motion vector data. Optimizations could be to
> -                                * allocate raw data in non coherent memory and only
> -                                * clear the motion vector data.
> -                                */
> -                               hevc_dec->ref_bufs[i].cpu =
> -                                       dma_alloc_coherent(vpu->dev,
> -                                                          hantro_hevc_ref_size(ctx),
> -                                                          &hevc_dec->ref_bufs[i].dma,
> -                                                          GFP_KERNEL);
> -                               if (!hevc_dec->ref_bufs[i].cpu)
> -                                       return 0;
> -
> -                               hevc_dec->ref_bufs[i].size = hantro_hevc_ref_size(ctx);
> -                       }
>                         hevc_dec->ref_bufs_used |= 1 << i;
> -                       memset(hevc_dec->ref_bufs[i].cpu, 0, hantro_hevc_ref_size(ctx));
>                         hevc_dec->ref_bufs_poc[i] = poc;
> -
> -                       return hevc_dec->ref_bufs[i].dma;
> +                       hevc_dec->ref_bufs[i].dma = addr;
> +                       return 0;
>                 }
>         }
>
> -       return 0;
> +       return -EINVAL;
>  }
>
>  void hantro_hevc_ref_remove_unused(struct hantro_ctx *ctx)
> @@ -314,8 +261,6 @@ void hantro_hevc_dec_exit(struct hantro_ctx *ctx)
>                                   hevc_dec->tile_bsd.cpu,
>                                   hevc_dec->tile_bsd.dma);
>         hevc_dec->tile_bsd.cpu = NULL;
> -
> -       hantro_hevc_ref_free(ctx);
>  }
>
>  int hantro_hevc_dec_init(struct hantro_ctx *ctx)
> diff --git a/drivers/staging/media/hantro/hantro_hw.h b/drivers/staging/media/hantro/hantro_hw.h
> index dbe51303724b..7286404c32ab 100644
> --- a/drivers/staging/media/hantro/hantro_hw.h
> +++ b/drivers/staging/media/hantro/hantro_hw.h
> @@ -345,6 +345,7 @@ void hantro_hevc_dec_exit(struct hantro_ctx *ctx);
>  int hantro_g2_hevc_dec_run(struct hantro_ctx *ctx);
>  int hantro_hevc_dec_prepare_run(struct hantro_ctx *ctx);
>  dma_addr_t hantro_hevc_get_ref_buf(struct hantro_ctx *ctx, int poc);
> +int hantro_hevc_add_ref_buf(struct hantro_ctx *ctx, int poc, dma_addr_t addr);
>  void hantro_hevc_ref_remove_unused(struct hantro_ctx *ctx);
>  size_t hantro_hevc_chroma_offset(const struct v4l2_ctrl_hevc_sps *sps);
>  size_t hantro_hevc_motion_vectors_offset(const struct v4l2_ctrl_hevc_sps *sps);
> @@ -394,6 +395,16 @@ hantro_h264_mv_size(unsigned int width, unsigned int height)
>         return 64 * MB_WIDTH(width) * MB_WIDTH(height) + 32;
>  }
>
> +static inline size_t
> +hantro_hevc_mv_size(unsigned int width, unsigned int height)
> +{
> +       /*
> +        * A CTB can be 64x64, 32x32 or 16x16.
> +        * Allocated memory for the "worse" case: 16x16
> +        */
> +       return width * height / 16;
> +}
> +
>  int hantro_g1_mpeg2_dec_run(struct hantro_ctx *ctx);
>  int rockchip_vpu2_mpeg2_dec_run(struct hantro_ctx *ctx);
>  void hantro_mpeg2_dec_copy_qtable(u8 *qtable,
> diff --git a/drivers/staging/media/hantro/hantro_postproc.c b/drivers/staging/media/hantro/hantro_postproc.c
> index a7774ad4c445..248abe5423f0 100644
> --- a/drivers/staging/media/hantro/hantro_postproc.c
> +++ b/drivers/staging/media/hantro/hantro_postproc.c
> @@ -146,6 +146,9 @@ int hantro_postproc_alloc(struct hantro_ctx *ctx)
>         else if (ctx->vpu_src_fmt->fourcc == V4L2_PIX_FMT_VP9_FRAME)
>                 buf_size += hantro_vp9_mv_size(ctx->dst_fmt.width,
>                                                ctx->dst_fmt.height);
> +       else if (ctx->vpu_src_fmt->fourcc == V4L2_PIX_FMT_HEVC_SLICE)
> +               buf_size += hantro_hevc_mv_size(ctx->dst_fmt.width,
> +                                               ctx->dst_fmt.height);
>
>         for (i = 0; i < num_buffers; ++i) {
>                 struct hantro_aux_buf *priv = &ctx->postproc.dec_q[i];
> diff --git a/drivers/staging/media/hantro/hantro_v4l2.c b/drivers/staging/media/hantro/hantro_v4l2.c
> index e4b0645ba6fc..e1fe37afe576 100644
> --- a/drivers/staging/media/hantro/hantro_v4l2.c
> +++ b/drivers/staging/media/hantro/hantro_v4l2.c
> @@ -150,20 +150,6 @@ static int vidioc_enum_fmt(struct file *file, void *priv,
>         unsigned int num_fmts, i, j = 0;
>         bool skip_mode_none;
>
> -       /*
> -        * The HEVC decoder on the G2 core needs a little quirk to offer NV12
> -        * only on the capture side. Once the post-processor logic is used,
> -        * we will be able to expose NV12_4L4 and NV12 as the other cases,
> -        * and therefore remove this quirk.
> -        */
> -       if (capture && ctx->vpu_src_fmt->fourcc == V4L2_PIX_FMT_HEVC_SLICE) {
> -               if (f->index == 0) {
> -                       f->pixelformat = V4L2_PIX_FMT_NV12;
> -                       return 0;
> -               }
> -               return -EINVAL;
> -       }
> -
>         /*
>          * When dealing with an encoder:
>          *  - on the capture side we want to filter out all MODE_NONE formats.
> @@ -304,6 +290,11 @@ static int hantro_try_fmt(const struct hantro_ctx *ctx,
>                         pix_mp->plane_fmt[0].sizeimage +=
>                                 hantro_vp9_mv_size(pix_mp->width,
>                                                    pix_mp->height);
> +               else if (ctx->vpu_src_fmt->fourcc == V4L2_PIX_FMT_HEVC_SLICE &&
> +                        !hantro_needs_postproc(ctx, fmt))
> +                       pix_mp->plane_fmt[0].sizeimage +=
> +                               hantro_hevc_mv_size(pix_mp->width,
> +                                                   pix_mp->height);
>         } else if (!pix_mp->plane_fmt[0].sizeimage) {
>                 /*
>                  * For coded formats the application can specify
> --
> 2.30.2
>

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