[PATCH v6 3/5] media: mediatek: vcodec: Get SRC buffer from bitstream instead of M2M

[Chen-Yu Tsai]

On Fri, Nov 8, 2024 at 11:32 AM Yunfei Dong <yunfei.dong at mediatek.com> wrote:
>
> Getting the SRC buffer from M2M will pick a different than the one
> used for current decode operation when the SRC buffer is removed
> from ready list.
>
> Signed-off-by: Yunfei Dong <yunfei.dong at mediatek.com>

Reviewed-by: Chen-Yu Tsai <wenst at chromium.org>

> ---
>  .../vcodec/decoder/vdec/vdec_av1_req_lat_if.c | 25 +++++++------------
>  .../vcodec/decoder/vdec/vdec_vp9_req_lat_if.c | 24 ++++++------------
>  2 files changed, 17 insertions(+), 32 deletions(-)
>
> diff --git a/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_av1_req_lat_if.c b/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_av1_req_lat_if.c
> index 90217cc8e242..0e1469effeb5 100644
> --- a/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_av1_req_lat_if.c
> +++ b/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_av1_req_lat_if.c
> @@ -1060,24 +1060,20 @@ static inline void vdec_av1_slice_vsi_to_remote(struct vdec_av1_slice_vsi *vsi,
>         memcpy(remote_vsi, vsi, sizeof(*vsi));
>  }
>
> -static int vdec_av1_slice_setup_lat_from_src_buf(struct vdec_av1_slice_instance *instance,
> -                                                struct vdec_av1_slice_vsi *vsi,
> -                                                struct vdec_lat_buf *lat_buf)
> +static void vdec_av1_slice_setup_lat_from_src_buf(struct vdec_av1_slice_instance *instance,
> +                                                 struct vdec_av1_slice_vsi *vsi,
> +                                                 struct mtk_vcodec_mem *bs,
> +                                                 struct vdec_lat_buf *lat_buf)
>  {
> -       struct vb2_v4l2_buffer *src;
> +       struct mtk_video_dec_buf *src_buf_info;
>         struct vb2_v4l2_buffer *dst;
>
> -       src = v4l2_m2m_next_src_buf(instance->ctx->m2m_ctx);
> -       if (!src)
> -               return -EINVAL;
> -
> -       lat_buf->vb2_v4l2_src = src;
> +       src_buf_info = container_of(bs, struct mtk_video_dec_buf, bs_buffer);
> +       lat_buf->vb2_v4l2_src = &src_buf_info->m2m_buf.vb;
>
>         dst = &lat_buf->ts_info;
> -       v4l2_m2m_buf_copy_metadata(src, dst, true);
> +       v4l2_m2m_buf_copy_metadata(lat_buf->vb2_v4l2_src, dst, true);
>         vsi->frame.cur_ts = dst->vb2_buf.timestamp;
> -
> -       return 0;
>  }
>
>  static short vdec_av1_slice_resolve_divisor_32(u32 D, short *shift)
> @@ -1724,10 +1720,7 @@ static int vdec_av1_slice_setup_lat(struct vdec_av1_slice_instance *instance,
>         struct vdec_av1_slice_vsi *vsi = &pfc->vsi;
>         int ret;
>
> -       ret = vdec_av1_slice_setup_lat_from_src_buf(instance, vsi, lat_buf);
> -       if (ret)
> -               return ret;
> -
> +       vdec_av1_slice_setup_lat_from_src_buf(instance, vsi, bs, lat_buf);
>         ret = vdec_av1_slice_setup_pfc(instance, pfc);
>         if (ret)
>                 return ret;
> diff --git a/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_vp9_req_lat_if.c b/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_vp9_req_lat_if.c
> index 3dceb668ba1c..a56f6bb879a6 100644
> --- a/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_vp9_req_lat_if.c
> +++ b/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_vp9_req_lat_if.c
> @@ -711,21 +711,16 @@ int vdec_vp9_slice_setup_single_from_src_to_dst(struct vdec_vp9_slice_instance *
>         return 0;
>  }
>
> -static int vdec_vp9_slice_setup_lat_from_src_buf(struct vdec_vp9_slice_instance *instance,
> -                                                struct vdec_lat_buf *lat_buf)
> +static void vdec_vp9_slice_setup_lat_from_src_buf(struct vdec_vp9_slice_instance *instance,
> +                                                 struct mtk_vcodec_mem *bs,
> +                                                 struct vdec_lat_buf *lat_buf)
>  {
> -       struct vb2_v4l2_buffer *src;
> -       struct vb2_v4l2_buffer *dst;
> -
> -       src = v4l2_m2m_next_src_buf(instance->ctx->m2m_ctx);
> -       if (!src)
> -               return -EINVAL;
> +       struct mtk_video_dec_buf *src_buf_info;
>
> -       lat_buf->vb2_v4l2_src = src;
> +       src_buf_info = container_of(bs, struct mtk_video_dec_buf, bs_buffer);
> +       lat_buf->vb2_v4l2_src = &src_buf_info->m2m_buf.vb;
>
> -       dst = &lat_buf->ts_info;
> -       v4l2_m2m_buf_copy_metadata(src, dst, true);
> -       return 0;
> +       v4l2_m2m_buf_copy_metadata(lat_buf->vb2_v4l2_src, &lat_buf->ts_info, true);
>  }
>
>  static void vdec_vp9_slice_setup_hdr(struct vdec_vp9_slice_instance *instance,
> @@ -1154,10 +1149,7 @@ static int vdec_vp9_slice_setup_lat(struct vdec_vp9_slice_instance *instance,
>         struct vdec_vp9_slice_vsi *vsi = &pfc->vsi;
>         int ret;
>
> -       ret = vdec_vp9_slice_setup_lat_from_src_buf(instance, lat_buf);
> -       if (ret)
> -               goto err;
> -
> +       vdec_vp9_slice_setup_lat_from_src_buf(instance, bs, lat_buf);
>         ret = vdec_vp9_slice_setup_pfc(instance, pfc);
>         if (ret)
>                 goto err;
> --
> 2.46.0
>