[libcamera-devel] [PATCH 08/16] android: capabilties: Correctly populate STALL durations

[Umang Jain]

Hi Jacopo

On 8/27/21 5:37 PM, Jacopo Mondi wrote:
> We currently only record 2560x1920 at 30FPS as stalling frame duration.


s/only record/hardcode/

(just a suggestion, puts things in accurate perspective)

>
> This is of course not correct, and all the required information to
> properly populate the ANDROID_SCALER_AVAILABLE_STALL_DURATIONS static
> metadata are available from initializeStaticMetadata().
>
> Use the collected stalling durations and sizes to properly popoulate the
> static property.
>
> Signed-off-by: Jacopo Mondi <jacopo at jmondi.org>


Reviewed-by: Umang Jain <umang.jain at ideasonboard.com>

> ---
>   src/android/camera_capabilities.cpp | 19 +++++++++++++------
>   1 file changed, 13 insertions(+), 6 deletions(-)
>
> diff --git a/src/android/camera_capabilities.cpp b/src/android/camera_capabilities.cpp
> index 061e65241806..23a9a3fbec50 100644
> --- a/src/android/camera_capabilities.cpp
> +++ b/src/android/camera_capabilities.cpp
> @@ -1263,12 +1263,6 @@ int CameraCapabilities::initializeStaticMetadata()
>   	staticMetadata_->addEntry(ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS,
>   				  availableStreamConfigurations);
>   
> -	std::vector<int64_t> availableStallDurations = {
> -		ANDROID_SCALER_AVAILABLE_FORMATS_BLOB, 2560, 1920, 33333333,
> -	};
> -	staticMetadata_->addEntry(ANDROID_SCALER_AVAILABLE_STALL_DURATIONS,
> -				  availableStallDurations);
> -
>   	std::vector<int64_t> minFrameDurations;
>   	minFrameDurations.reserve(streamConfigurations_.size() * 4);
>   	for (const auto &entry : streamConfigurations_) {
> @@ -1280,6 +1274,19 @@ int CameraCapabilities::initializeStaticMetadata()
>   	staticMetadata_->addEntry(ANDROID_SCALER_AVAILABLE_MIN_FRAME_DURATIONS,
>   				  minFrameDurations);
>   
> +	std::vector<int64_t> availableStallDurations;
> +	for (const auto &entry : streamConfigurations_) {
> +		if (entry.androidFormat != HAL_PIXEL_FORMAT_BLOB)
> +			continue;
> +
> +		availableStallDurations.push_back(entry.androidFormat);
> +		availableStallDurations.push_back(entry.resolution.width);
> +		availableStallDurations.push_back(entry.resolution.height);
> +		availableStallDurations.push_back(entry.minFrameDurationNsec);
> +	}
> +	staticMetadata_->addEntry(ANDROID_SCALER_AVAILABLE_STALL_DURATIONS,
> +				  availableStallDurations);
> +
>   	uint8_t croppingType = ANDROID_SCALER_CROPPING_TYPE_CENTER_ONLY;
>   	staticMetadata_->addEntry(ANDROID_SCALER_CROPPING_TYPE, croppingType);
>