Dne četrtek, 10. oktober 2019 ob 15:11:52 CEST je Hans Verkuil napisal(a):
> From: Jernej Skrabec <jernej.skrabec@xxxxxxxx>
>
> When frame contains multiple slices and driver works in slice mode, it's
> more efficient to hold capture buffer in queue until all slices of a
> same frame are decoded.
>
> Add support for that to Cedrus driver by exposing and implementing
> V4L2_BUF_CAP_SUPPORTS_M2M_HOLD_CAPTURE_BUF capability.
>
> Signed-off-by: Jernej Skrabec <jernej.skrabec@xxxxxxxx>
> [hverkuil-cisco@xxxxxxxxx: rewritten to use
> v4l2_m2m_buf_done_and_job_finish] Signed-off-by: Hans Verkuil
> <hverkuil-cisco@xxxxxxxxx>
> ---
> drivers/staging/media/sunxi/cedrus/cedrus_hw.c | 16 ++--------------
> .../staging/media/sunxi/cedrus/cedrus_video.c | 14 ++++++++++++++
> 2 files changed, 16 insertions(+), 14 deletions(-)
>
> diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_hw.c
> b/drivers/staging/media/sunxi/cedrus/cedrus_hw.c index
> a942cd9bed57..e7e18424bab1 100644
> --- a/drivers/staging/media/sunxi/cedrus/cedrus_hw.c
> +++ b/drivers/staging/media/sunxi/cedrus/cedrus_hw.c
> @@ -103,7 +103,6 @@ static irqreturn_t cedrus_irq(int irq, void *data)
> {
> struct cedrus_dev *dev = data;
> struct cedrus_ctx *ctx;
> - struct vb2_v4l2_buffer *src_buf, *dst_buf;
> enum vb2_buffer_state state;
> enum cedrus_irq_status status;
>
> @@ -121,24 +120,13 @@ static irqreturn_t cedrus_irq(int irq, void *data)
> dev->dec_ops[ctx->current_codec]->irq_disable(ctx);
> dev->dec_ops[ctx->current_codec]->irq_clear(ctx);
>
> - src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
> - dst_buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
> -
> - if (!src_buf || !dst_buf) {
> - v4l2_err(&dev->v4l2_dev,
> - "Missing source and/or destination
buffers\n");
> - return IRQ_HANDLED;
> - }
> -
> if (status == CEDRUS_IRQ_ERROR)
> state = VB2_BUF_STATE_ERROR;
> else
> state = VB2_BUF_STATE_DONE;
>
> - v4l2_m2m_buf_done(src_buf, state);
> - v4l2_m2m_buf_done(dst_buf, state);
> -
> - v4l2_m2m_job_finish(ctx->dev->m2m_dev, ctx->fh.m2m_ctx);
> + v4l2_m2m_buf_done_and_job_finish(ctx->dev->m2m_dev, ctx->fh.m2m_ctx,
> + state);
>
> return IRQ_HANDLED;
> }
> diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_video.c
> b/drivers/staging/media/sunxi/cedrus/cedrus_video.c index
> 3ec3a2db790c..82198b2bb081 100644
> --- a/drivers/staging/media/sunxi/cedrus/cedrus_video.c
> +++ b/drivers/staging/media/sunxi/cedrus/cedrus_video.c
> @@ -303,6 +303,17 @@ static int cedrus_s_fmt_vid_out(struct file *file, void
> *priv,
>
> ctx->src_fmt = f->fmt.pix;
>
> + switch (ctx->src_fmt.pixelformat) {
> + case V4L2_PIX_FMT_H264_SLICE:
> + vq->subsystem_flags |=
> + VB2_V4L2_FL_SUPPORTS_M2M_HOLD_CAPTURE_BUF;
> + break;
> + default:
> + vq->subsystem_flags &=
> +
(u32)~VB2_V4L2_FL_SUPPORTS_M2M_HOLD_CAPTURE_BUF;
I checked again and I think we can drop this cast.
Best regards,
Jernej
> + break;
> + }
> +
> /* Propagate colorspace information to capture. */
> ctx->dst_fmt.colorspace = f->fmt.pix.colorspace;
> ctx->dst_fmt.xfer_func = f->fmt.pix.xfer_func;
> @@ -336,6 +347,9 @@ const struct v4l2_ioctl_ops cedrus_ioctl_ops = {
> .vidioc_streamon = v4l2_m2m_ioctl_streamon,
> .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
>
> + .vidioc_try_decoder_cmd =
v4l2_m2m_ioctl_stateless_try_decoder_cmd,
> + .vidioc_decoder_cmd =
v4l2_m2m_ioctl_stateless_decoder_cmd,
> +
> .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
> .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
> };
