diff mbox series

[v5,20/20] media: hantro: Enable HOLD_CAPTURE_BUF for H.264

Message ID 20220513202922.13846-21-nicolas.dufresne@collabora.com (mailing list archive)
State New
Headers show
Series [v5,01/20] media: h264: Use v4l2_h264_reference for reflist | expand

Commit Message

Nicolas Dufresne May 13, 2022, 8:29 p.m. UTC
This is needed to optimize field decoding. Each field will be
decoded into the same capture buffer. To be able to queue multiple
buffers, we need to be able to ask the driver to hold the capture
buffer.

Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Reviewed-by: Sebastian Fricke <sebastian.fricke@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
---
 drivers/staging/media/hantro/hantro_v4l2.c | 25 ++++++++++++++++++++++
 1 file changed, 25 insertions(+)
diff mbox series

Patch

diff --git a/drivers/staging/media/hantro/hantro_v4l2.c b/drivers/staging/media/hantro/hantro_v4l2.c
index ed458866257a..22ad182ee972 100644
--- a/drivers/staging/media/hantro/hantro_v4l2.c
+++ b/drivers/staging/media/hantro/hantro_v4l2.c
@@ -408,6 +408,30 @@  hantro_update_requires_request(struct hantro_ctx *ctx, u32 fourcc)
 	}
 }
 
+static void
+hantro_update_requires_hold_capture_buf(struct hantro_ctx *ctx, u32 fourcc)
+{
+	struct vb2_queue *vq;
+
+	vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
+			     V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE);
+
+	switch (fourcc) {
+	case V4L2_PIX_FMT_JPEG:
+	case V4L2_PIX_FMT_MPEG2_SLICE:
+	case V4L2_PIX_FMT_VP8_FRAME:
+	case V4L2_PIX_FMT_HEVC_SLICE:
+	case V4L2_PIX_FMT_VP9_FRAME:
+		vq->subsystem_flags &= ~(VB2_V4L2_FL_SUPPORTS_M2M_HOLD_CAPTURE_BUF);
+		break;
+	case V4L2_PIX_FMT_H264_SLICE:
+		vq->subsystem_flags |= VB2_V4L2_FL_SUPPORTS_M2M_HOLD_CAPTURE_BUF;
+		break;
+	default:
+		break;
+	}
+}
+
 static int hantro_set_fmt_out(struct hantro_ctx *ctx,
 			      struct v4l2_pix_format_mplane *pix_mp)
 {
@@ -471,6 +495,7 @@  static int hantro_set_fmt_out(struct hantro_ctx *ctx,
 	ctx->dst_fmt.quantization = pix_mp->quantization;
 
 	hantro_update_requires_request(ctx, pix_mp->pixelformat);
+	hantro_update_requires_hold_capture_buf(ctx, pix_mp->pixelformat);
 
 	vpu_debug(0, "OUTPUT codec mode: %d\n", ctx->vpu_src_fmt->codec_mode);
 	vpu_debug(0, "fmt - w: %d, h: %d\n",