linux-kernel - [PATCH v7 08/13] media: verisilicon: Compute motion vectors size for AV1 frames

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Message-Id: <20230503083438.85139-9-benjamin.gaignard@collabora.com>
Date:   Wed,  3 May 2023 10:34:33 +0200
From:   Benjamin Gaignard <benjamin.gaignard@...labora.com>
To:     ezequiel@...guardiasur.com.ar, p.zabel@...gutronix.de,
        mchehab@...nel.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, heiko@...ech.de,
        hverkuil-cisco@...all.nl, nicolas.dufresne@...labora.com
Cc:     linux-media@...r.kernel.org, linux-rockchip@...ts.infradead.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, kernel@...labora.com,
        Benjamin Gaignard <benjamin.gaignard@...labora.com>
Subject: [PATCH v7 08/13] media: verisilicon: Compute motion vectors size for AV1 frames

Compute the additional space required to store motion vectors at
the end of the frames buffers.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@...labora.com>
Reviewed-by: Nicolas Dufresne <nicolas.dufresne@...labora.com>
---
 drivers/media/platform/verisilicon/hantro_hw.h      | 13 +++++++++++++
 .../media/platform/verisilicon/hantro_postproc.c    |  3 +++
 drivers/media/platform/verisilicon/hantro_v4l2.c    |  5 +++++
 3 files changed, 21 insertions(+)

diff --git a/drivers/media/platform/verisilicon/hantro_hw.h b/drivers/media/platform/verisilicon/hantro_hw.h
index e83f0c523a30..bc61d4e051c7 100644
--- a/drivers/media/platform/verisilicon/hantro_hw.h
+++ b/drivers/media/platform/verisilicon/hantro_hw.h
@@ -417,6 +417,19 @@ hantro_hevc_mv_size(unsigned int width, unsigned int height)
 	return width * height / 16;
 }
 
+static inline unsigned short hantro_av1_num_sbs(unsigned short dimension)
+{
+	return DIV_ROUND_UP(dimension, 64);
+}
+
+static inline size_t
+hantro_av1_mv_size(unsigned int width, unsigned int height)
+{
+	size_t num_sbs = hantro_av1_num_sbs(width) * hantro_av1_num_sbs(height);
+
+	return ALIGN(num_sbs * 384, 16) * 2 + 512;
+}
+
 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/media/platform/verisilicon/hantro_postproc.c b/drivers/media/platform/verisilicon/hantro_postproc.c
index 6437423ccf3a..bb16af50719d 100644
--- a/drivers/media/platform/verisilicon/hantro_postproc.c
+++ b/drivers/media/platform/verisilicon/hantro_postproc.c
@@ -213,6 +213,9 @@ int hantro_postproc_alloc(struct hantro_ctx *ctx)
 	else if (ctx->vpu_src_fmt->fourcc == V4L2_PIX_FMT_HEVC_SLICE)
 		buf_size += hantro_hevc_mv_size(pix_mp.width,
 						pix_mp.height);
+	else if (ctx->vpu_src_fmt->fourcc == V4L2_PIX_FMT_AV1_FRAME)
+		buf_size += hantro_av1_mv_size(pix_mp.width,
+					       pix_mp.height);
 
 	for (i = 0; i < num_buffers; ++i) {
 		struct hantro_aux_buf *priv = &ctx->postproc.dec_q[i];
diff --git a/drivers/media/platform/verisilicon/hantro_v4l2.c b/drivers/media/platform/verisilicon/hantro_v4l2.c
index 1ab5f9ce725b..1c76ca1fe1c6 100644
--- a/drivers/media/platform/verisilicon/hantro_v4l2.c
+++ b/drivers/media/platform/verisilicon/hantro_v4l2.c
@@ -333,6 +333,11 @@ static int hantro_try_fmt(const struct hantro_ctx *ctx,
 			pix_mp->plane_fmt[0].sizeimage +=
 				hantro_hevc_mv_size(pix_mp->width,
 						    pix_mp->height);
+		else if (ctx->vpu_src_fmt->fourcc == V4L2_PIX_FMT_AV1_FRAME &&
+			 !hantro_needs_postproc(ctx, fmt))
+			pix_mp->plane_fmt[0].sizeimage +=
+				hantro_av1_mv_size(pix_mp->width,
+						   pix_mp->height);
 	} else if (!pix_mp->plane_fmt[0].sizeimage) {
 		/*
 		 * For coded formats the application can specify
-- 
2.34.1