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media: hantro: Enable HOLD_CAPTURE_BUF for H.264 

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>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
This commit is contained in:
Nicolas Dufresne 2022-05-13 22:29:22 +02:00 committed by Mauro Carvalho Chehab
parent 11442b7c93
commit 340ce50f75
1 changed files with 25 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
drivers/staging/media/hantro/hantro_v4l2.c
View File

@ -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",