Hi Benjamin,
Thanks for the patch.
On Tue, Jan 24 2023 at 12:04:25 PM -0300, Ezequiel Garcia
<ezequiel@xxxxxxxxxxxxxxxxxxxx> wrote:
On Thu, Jan 19 2023 at 09:47:23 AM +0100, Benjamin Gaignard
<benjamin.gaignard@xxxxxxxxxxxxx> wrote:
When decoding a 10bits bitstreams HEVC driver should only expose
10bits pixel formats.
To fulfill this requirement it is needed to call
hantro_reset_raw_fmt()
when bit depth change and to correctly set match_depth in pixel
formats
enumeration.
Fixes: dc39473d0340 ("media: hantro: imx8m: Enable 10bit decoding")
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@xxxxxxxxxxxxx>
---
version 3:
- Propagate hantro_reset_raw_fmt() error.
I hope I have correctly understood Ezekiel's thoughts
in the way I have implemented them.
version 2:
- Remove struct hantro_ctx *ctx variable in hantro_try_ctrl()
because it isn't used anymore.
.../media/platform/verisilicon/hantro_drv.c | 40
+++++++++++++++----
.../media/platform/verisilicon/hantro_v4l2.c | 6 +--
.../media/platform/verisilicon/hantro_v4l2.h | 1 +
.../media/platform/verisilicon/imx8m_vpu_hw.c | 2 +
4 files changed, 38 insertions(+), 11 deletions(-)
diff --git a/drivers/media/platform/verisilicon/hantro_drv.c
b/drivers/media/platform/verisilicon/hantro_drv.c
index 8cb4a68c9119..a713a45c0108 100644
--- a/drivers/media/platform/verisilicon/hantro_drv.c
+++ b/drivers/media/platform/verisilicon/hantro_drv.c
@@ -251,11 +251,6 @@ queue_init(void *priv, struct vb2_queue
*src_vq, struct vb2_queue *dst_vq)
static int hantro_try_ctrl(struct v4l2_ctrl *ctrl)
{
- struct hantro_ctx *ctx;
-
- ctx = container_of(ctrl->handler,
- struct hantro_ctx, ctrl_handler);
-
if (ctrl->id == V4L2_CID_STATELESS_H264_SPS) {
const struct v4l2_ctrl_h264_sps *sps = ctrl->p_new.p_h264_sps;
@@ -274,8 +269,6 @@ static int hantro_try_ctrl(struct v4l2_ctrl
*ctrl)
if (sps->bit_depth_luma_minus8 != 0 && sps->bit_depth_luma_minus8
!= 2)
/* Only 8-bit and 10-bit are supported */
return -EINVAL;
-
- ctx->bit_depth = sps->bit_depth_luma_minus8 + 8;
Oh dammit this is wrong! The try_ctrl shouldn't be changing state!
I missed this when I reviewed the patch.
Please keep in mind, a "try" API in V4L2 typically just
validates but shouldn't set state.
I'm sure we will soon have a Hantro Rust driver and we will be able
to enforce state mutation rules :)
} else if (ctrl->id == V4L2_CID_STATELESS_VP9_FRAME) {
const struct v4l2_ctrl_vp9_frame *dec_params =
ctrl->p_new.p_vp9_frame;
@@ -286,6 +279,32 @@ static int hantro_try_ctrl(struct v4l2_ctrl
*ctrl)
return 0;
}
+static int hantro_hevc_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct hantro_ctx *ctx;
+
+ ctx = container_of(ctrl->handler,
+ struct hantro_ctx, ctrl_handler);
+
+ vpu_debug(1, "s_ctrl: id = %d, val = %d\n", ctrl->id, ctrl->val);
+
+ switch (ctrl->id) {
+ case V4L2_CID_STATELESS_HEVC_SPS:
+ const struct v4l2_ctrl_hevc_sps *sps = ctrl->p_new.p_hevc_sps;
+ int bit_depth = sps->bit_depth_luma_minus8 + 8;
+
+ if (ctx->bit_depth != bit_depth) {
+ ctx->bit_depth = bit_depth;
+ return hantro_reset_raw_fmt(ctx);
You cannot simply return hantro_reset_raw() and set the bit_depth
in hantro_ctx.
If hantro_reset_raw fails, you would leave a bad state behind.
+ }
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
static int hantro_jpeg_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct hantro_ctx *ctx;
@@ -328,6 +347,11 @@ static const struct v4l2_ctrl_ops
hantro_ctrl_ops = {
.try_ctrl = hantro_try_ctrl,
};
+static const struct v4l2_ctrl_ops hantro_hevc_ctrl_ops = {
+ .s_ctrl = hantro_hevc_s_ctrl,
+ .try_ctrl = hantro_try_ctrl,
+};
+
static const struct v4l2_ctrl_ops hantro_jpeg_ctrl_ops = {
.s_ctrl = hantro_jpeg_s_ctrl,
};
@@ -470,7 +494,7 @@ static const struct hantro_ctrl controls[] = {
.codec = HANTRO_HEVC_DECODER,
.cfg = {
.id = V4L2_CID_STATELESS_HEVC_SPS,
- .ops = &hantro_ctrl_ops,
+ .ops = &hantro_hevc_ctrl_ops,
},
}, {
.codec = HANTRO_HEVC_DECODER,
diff --git a/drivers/media/platform/verisilicon/hantro_v4l2.c
b/drivers/media/platform/verisilicon/hantro_v4l2.c
index 2c7a805289e7..cd85877bbbe2 100644
--- a/drivers/media/platform/verisilicon/hantro_v4l2.c
+++ b/drivers/media/platform/verisilicon/hantro_v4l2.c
@@ -398,7 +398,7 @@ hantro_reset_encoded_fmt(struct hantro_ctx *ctx)
hantro_set_fmt_out(ctx, fmt);
}
-static void
+int
hantro_reset_raw_fmt(struct hantro_ctx *ctx)
{
const struct hantro_fmt *raw_vpu_fmt;
@@ -420,9 +420,9 @@ hantro_reset_raw_fmt(struct hantro_ctx *ctx)
raw_fmt->width = encoded_fmt->width;
raw_fmt->height = encoded_fmt->height;
if (ctx->is_encoder)
- hantro_set_fmt_out(ctx, raw_fmt);
+ return hantro_set_fmt_out(ctx, raw_fmt);
else
- hantro_set_fmt_cap(ctx, raw_fmt);
+ return hantro_set_fmt_cap(ctx, raw_fmt);
And same here, you cannot simply return from hantro_reset_raw_fmt.
You need to unroll the changes to ctx->vpu_dst_fmt,
and ctx->vpu_src_fmt.
Thanks!
}
void hantro_reset_fmts(struct hantro_ctx *ctx)
diff --git a/drivers/media/platform/verisilicon/hantro_v4l2.h
b/drivers/media/platform/verisilicon/hantro_v4l2.h
index 64f6f57e9d7a..cb8e1fe3422d 100644
--- a/drivers/media/platform/verisilicon/hantro_v4l2.h
+++ b/drivers/media/platform/verisilicon/hantro_v4l2.h
@@ -21,6 +21,7 @@
extern const struct v4l2_ioctl_ops hantro_ioctl_ops;
extern const struct vb2_ops hantro_queue_ops;
+int hantro_reset_raw_fmt(struct hantro_ctx *ctx);
void hantro_reset_fmts(struct hantro_ctx *ctx);
int hantro_get_format_depth(u32 fourcc);
const struct hantro_fmt *
diff --git a/drivers/media/platform/verisilicon/imx8m_vpu_hw.c
b/drivers/media/platform/verisilicon/imx8m_vpu_hw.c
index b390228fd3b4..f850d8bddef6 100644
--- a/drivers/media/platform/verisilicon/imx8m_vpu_hw.c
+++ b/drivers/media/platform/verisilicon/imx8m_vpu_hw.c
@@ -152,6 +152,7 @@ static const struct hantro_fmt
imx8m_vpu_g2_postproc_fmts[] = {
{
.fourcc = V4L2_PIX_FMT_NV12,
.codec_mode = HANTRO_MODE_NONE,
+ .match_depth = true,
.postprocessed = true,
.frmsize = {
.min_width = FMT_MIN_WIDTH,
@@ -165,6 +166,7 @@ static const struct hantro_fmt
imx8m_vpu_g2_postproc_fmts[] = {
{
.fourcc = V4L2_PIX_FMT_P010,
.codec_mode = HANTRO_MODE_NONE,
+ .match_depth = true,
.postprocessed = true,
.frmsize = {
.min_width = FMT_MIN_WIDTH,
--
2.34.1
