[PATCH v2] media: venus: Fix reported frame intervals

[PATCH v2] media: venus: Fix reported frame intervals

[Loic Poulain]

On dragonboard-410c (apq8016) with HFI_VERSION_1XX, the reported
framerate is in unit of 1/65535 fps (for fine grained control).
So the current reported supported frame intervals is wrong (max
is 1/65535 fps), leading to encoding issues or format negotiation
failures with gstreamer.

Fix that by setting the framerate denominator to coherent value
based on the the framerate factor.

The factor is not always the same, e.g. with db820c (apq8096) HFI
reports framerate in fps unit. So only apply that for HFI_VERSION_1XX.

Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
---
 v2: Use IS_V1 helper for retrieveing venus core version
     Adjust denominator instead of numerator

 drivers/media/platform/qcom/venus/venc.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/drivers/media/platform/qcom/venus/venc.c b/drivers/media/platform/qcom/venus/venc.c
index 9981a2a..5b3df09 100644
--- a/drivers/media/platform/qcom/venus/venc.c
+++ b/drivers/media/platform/qcom/venus/venc.c
@@ -576,6 +576,7 @@ static int venc_enum_frameintervals(struct file *file, void *fh,
 {
 	struct venus_inst *inst = to_inst(file);
 	const struct venus_format *fmt;
+	unsigned int framerate_factor = 1;
 
 	fival->type = V4L2_FRMIVAL_TYPE_STEPWISE;
 
@@ -600,12 +601,17 @@ static int venc_enum_frameintervals(struct file *file, void *fh,
 	    fival->height < frame_height_min(inst))
 		return -EINVAL;
 
+	if (IS_V1(inst->core)) {
+		/* framerate is reported in 1/65535 fps unit */
+		framerate_factor = (1 << 16);
+	}
+
 	fival->stepwise.min.numerator = 1;
-	fival->stepwise.min.denominator = frate_max(inst);
+	fival->stepwise.min.denominator = frate_max(inst) / framerate_factor;
 	fival->stepwise.max.numerator = 1;
-	fival->stepwise.max.denominator = frate_min(inst);
+	fival->stepwise.max.denominator = frate_min(inst) / framerate_factor;
 	fival->stepwise.step.numerator = 1;
-	fival->stepwise.step.denominator = frate_max(inst);
+	fival->stepwise.step.denominator = frate_max(inst) / framerate_factor;
 
 	return 0;
 }
-- 
2.7.4

Re: [PATCH v2] media: venus: Fix reported frame intervals

[Stanimir Varbanov]

Hi Loic,

Thanks for the patch!

On 8/4/20 3:21 PM, Loic Poulain wrote:
> On dragonboard-410c (apq8016) with HFI_VERSION_1XX, the reported
> framerate is in unit of 1/65535 fps (for fine grained control).
> So the current reported supported frame intervals is wrong (max
> is 1/65535 fps), leading to encoding issues or format negotiation
> failures with gstreamer.
> 
> Fix that by setting the framerate denominator to coherent value
> based on the the framerate factor.
> 
> The factor is not always the same, e.g. with db820c (apq8096) HFI
> reports framerate in fps unit. So only apply that for HFI_VERSION_1XX.
> 
> Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
> ---
>  v2: Use IS_V1 helper for retrieveing venus core version
>      Adjust denominator instead of numerator
> 
>  drivers/media/platform/qcom/venus/venc.c | 12 +++++++++---
>  1 file changed, 9 insertions(+), 3 deletions(-)

Acked-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>

> 
> diff --git a/drivers/media/platform/qcom/venus/venc.c b/drivers/media/platform/qcom/venus/venc.c
> index 9981a2a..5b3df09 100644
> --- a/drivers/media/platform/qcom/venus/venc.c
> +++ b/drivers/media/platform/qcom/venus/venc.c
> @@ -576,6 +576,7 @@ static int venc_enum_frameintervals(struct file *file, void *fh,
>  {
>  	struct venus_inst *inst = to_inst(file);
>  	const struct venus_format *fmt;
> +	unsigned int framerate_factor = 1;
>  
>  	fival->type = V4L2_FRMIVAL_TYPE_STEPWISE;
>  
> @@ -600,12 +601,17 @@ static int venc_enum_frameintervals(struct file *file, void *fh,
>  	    fival->height < frame_height_min(inst))
>  		return -EINVAL;
>  
> +	if (IS_V1(inst->core)) {
> +		/* framerate is reported in 1/65535 fps unit */
> +		framerate_factor = (1 << 16);
> +	}
> +
>  	fival->stepwise.min.numerator = 1;
> -	fival->stepwise.min.denominator = frate_max(inst);
> +	fival->stepwise.min.denominator = frate_max(inst) / framerate_factor;
>  	fival->stepwise.max.numerator = 1;
> -	fival->stepwise.max.denominator = frate_min(inst);
> +	fival->stepwise.max.denominator = frate_min(inst) / framerate_factor;
>  	fival->stepwise.step.numerator = 1;
> -	fival->stepwise.step.denominator = frate_max(inst);
> +	fival->stepwise.step.denominator = frate_max(inst) / framerate_factor;
>  
>  	return 0;
>  }
> 

-- 
regards,
Stan