[libcamera-devel] [PATCH 2/3] pipeline: rkisp1: Fix validation when sensor max is larger than ISP input
Umang Jain
umang.jain at ideasonboard.com
Tue Jul 23 09:30:56 CEST 2024
Hello all,
ressurcting this old patch as it has went abandoned...
On 17/01/24 9:27 pm, Laurent Pinchart via libcamera-devel wrote:
> On Wed, Jan 17, 2024 at 11:43:43AM +0000, Kieran Bingham via libcamera-devel wrote:
>> Quoting Paul Elder via libcamera-devel (2024-01-16 09:17:53)
>>> If the maximum sensor output size is larger than the maximum ISP input
>>> size, the maximum sensor size could be selected and the pipeline would
>>> fail with an EPIPE. Fix this by clamping the sensor size to the ISP
>>> input size at validation time.
>> I think we should do more here (in a separate patch) to filter out
>> sensor modes that are larger than the ISP max as well.
>>
>> At the moment it seems too easy for the rkisp1 pipeline handler to
>> select an input configuration that it can't actually configure.
>>
>> But that's aside from this patch itself.
>>
>>> Signed-off-by: Paul Elder <paul.elder at ideasonboard.com>
>>> ---
>>> src/libcamera/pipeline/rkisp1/rkisp1.cpp | 17 ++++++++++--
>>> src/libcamera/pipeline/rkisp1/rkisp1_path.cpp | 26 +++++++++----------
>>> src/libcamera/pipeline/rkisp1/rkisp1_path.h | 4 ++-
>>> 3 files changed, 30 insertions(+), 17 deletions(-)
>>>
>>> diff --git a/src/libcamera/pipeline/rkisp1/rkisp1.cpp b/src/libcamera/pipeline/rkisp1/rkisp1.cpp
>>> index 586b46d64..fb67ba8f4 100644
>>> --- a/src/libcamera/pipeline/rkisp1/rkisp1.cpp
>>> +++ b/src/libcamera/pipeline/rkisp1/rkisp1.cpp
>>> @@ -1202,11 +1202,24 @@ bool PipelineHandlerRkISP1::match(DeviceEnumerator *enumerator)
>>> if (param_->open() < 0)
>>> return false;
>>>
>>> + /*
>>> + * Retrieve ISP maximum input size for config validation in the path
> s/Retrieve/Retrieve the/
>
>>> + * classes
> s/$/./
>
>>> + */
>>> + Size ispMaxInSize = { 0, 0 };
> That's the default, so you can just write
>
> Size ispMaxInSize;
>
> I also find ispMaxInputSize more readable.
>
>>> + V4L2Subdevice::Formats ispFormats = isp_->formats(0);
> const if you don't need to modify it.
>
>>> + for (const auto &[mbus, sizes] : ispFormats) {
>>> + for (const auto &size : sizes) {
>>> + if (ispMaxInSize < size.max)
>>> + ispMaxInSize = size.max;
>>> + }
>>> + }
> Do the maximum input size depend on the media bus format ? And to we
> have multiple sizes in the sizes vector ? We could take some shortcuts,
> knowing how the ISP driver is implemented, taking the first entry in
> both ispFormats and sizes.
>
>>> +
>>> /* Locate and open the ISP main and self paths. */
>>> - if (!mainPath_.init(media_))
>>> + if (!mainPath_.init(media_, ispMaxInSize))
>>> return false;
>>>
>>> - if (hasSelfPath_ && !selfPath_.init(media_))
>>> + if (hasSelfPath_ && !selfPath_.init(media_, ispMaxInSize))
>>> return false;
>>>
>>> mainPath_.bufferReady().connect(this, &PipelineHandlerRkISP1::bufferReady);
>>> diff --git a/src/libcamera/pipeline/rkisp1/rkisp1_path.cpp b/src/libcamera/pipeline/rkisp1/rkisp1_path.cpp
>>> index b62b645ca..eaab7e857 100644
>>> --- a/src/libcamera/pipeline/rkisp1/rkisp1_path.cpp
>>> +++ b/src/libcamera/pipeline/rkisp1/rkisp1_path.cpp
>>> @@ -62,7 +62,7 @@ RkISP1Path::RkISP1Path(const char *name, const Span<const PixelFormat> &formats,
>>> {
>>> }
>>>
>>> -bool RkISP1Path::init(MediaDevice *media)
>>> +bool RkISP1Path::init(MediaDevice *media, const Size &ispMaxInSize)
> ispMaxInputSize here too if you rename it above. Same below.
>
>> It feels a bit odd to me passing ispMaxInSize as the only parameter to
>> initialize. But I guess it save init from re-determining it for each
>> path, and maybe it's the only variable for now - so I think we're ok
>> here.
>>
>> I wonder if we should iterate and 'try' configurations to only expose
>> those which can be supported. But we can tackle that on top I think.
> Agreed.
>
>> So for now I am ok with this:
>>
>> Reviewed-by: Kieran Bingham <kieran.bingham at ideasonboard.com>
> Reviewed-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
>
> with the above comments taken into account.
>
>>> {
>>> std::string resizer = std::string("rkisp1_resizer_") + name_ + "path";
>>> std::string video = std::string("rkisp1_") + name_ + "path";
>>> @@ -76,6 +76,7 @@ bool RkISP1Path::init(MediaDevice *media)
>>> return false;
>>>
>>> populateFormats();
>>> + ispMaxInSize_ = ispMaxInSize;
>>>
>>> link_ = media->link("rkisp1_isp", 2, resizer, 0);
>>> if (!link_)
>>> @@ -172,7 +173,9 @@ RkISP1Path::generateConfiguration(const CameraSensor *sensor, const Size &size,
>>> /* Add all the RAW sizes the sensor can produce for this code. */
>>> for (const auto &rawSize : sensor->sizes(mbusCode)) {
>>> if (rawSize.width > maxResolution_.width ||
>>> - rawSize.height > maxResolution_.height)
>>> + rawSize.height > maxResolution_.height ||
>>> + rawSize.width > ispMaxInSize_.width ||
>>> + rawSize.height > ispMaxInSize_.height)
>>> continue;
>>>
>>> streamFormats[format].push_back({ rawSize, rawSize });
>>> @@ -275,8 +278,9 @@ CameraConfiguration::Status RkISP1Path::validate(const CameraSensor *sensor,
>>> if (!found)
>>> cfg->pixelFormat = isRaw ? rawFormat : formats::NV12;
>>>
>>> - Size minResolution;
>>> - Size maxResolution;
>>> + Size maxResolution = maxResolution_.boundedToAspectRatio(resolution)
>>> + .boundedTo(resolution);
>>> + Size minResolution = minResolution_.expandedToAspectRatio(resolution);
I think one point of discussion went un-noticed here, is whether this is
the correct behaviour. If the sensor input size is larger than that of
ISP, the maxResolution_ of the ISP is bounded to aspect ratio of the
sensor highest resolution.
I hit his recently - running IMX283 on i.MX8MP. I noticed the pipeline
was getting a maximum supported resolution of 4096x2944 (ISP input max
resolution is 4096x3072). And the resolution of IMX283 was 5472x3648
So aspect ratio of IMX283 5472x3648 (1.5) brings the aspect ratio of ISP
max input 4096x3072(1.33) to 4096x2944 (1.55)
So the question here really is whether to preserve the original aspect
ratio of the sensor's maximum output (4096x2944) and treat as that
maxResolution - or the maxResolution should remain the same as supported
by the ISP (4096x3072) in all cases.
>>>
>>> if (isRaw) {
>>> /*
>>> @@ -287,16 +291,10 @@ CameraConfiguration::Status RkISP1Path::validate(const CameraSensor *sensor,
>>> V4L2SubdeviceFormat sensorFormat =
>>> sensor->getFormat({ mbusCode }, cfg->size);
>>>
>>> - minResolution = sensorFormat.size;
>>> - maxResolution = sensorFormat.size;
>>> - } else {
>>> - /*
>>> - * Adjust the size based on the sensor resolution and absolute
>>> - * limits of the ISP.
>>> - */
>>> - minResolution = minResolution_.expandedToAspectRatio(resolution);
>>> - maxResolution = maxResolution_.boundedToAspectRatio(resolution)
>>> - .boundedTo(resolution);
>>> + if (!sensorFormat.size.isNull()) {
>>> + minResolution = sensorFormat.size.boundedTo(ispMaxInSize_);
>>> + maxResolution = sensorFormat.size.boundedTo(ispMaxInSize_);
>>> + }
>>> }
>>>
>>> cfg->size.boundTo(maxResolution);
>>> diff --git a/src/libcamera/pipeline/rkisp1/rkisp1_path.h b/src/libcamera/pipeline/rkisp1/rkisp1_path.h
>>> index cd77957ee..c96bd5557 100644
>>> --- a/src/libcamera/pipeline/rkisp1/rkisp1_path.h
>>> +++ b/src/libcamera/pipeline/rkisp1/rkisp1_path.h
>>> @@ -35,7 +35,7 @@ public:
>>> RkISP1Path(const char *name, const Span<const PixelFormat> &formats,
>>> const Size &minResolution, const Size &maxResolution);
>>>
>>> - bool init(MediaDevice *media);
>>> + bool init(MediaDevice *media, const Size &ispMaxInSize);
>>>
>>> int setEnabled(bool enable) { return link_->setEnabled(enable); }
>>> bool isEnabled() const { return link_->flags() & MEDIA_LNK_FL_ENABLED; }
>>> @@ -77,6 +77,8 @@ private:
>>> std::unique_ptr<V4L2Subdevice> resizer_;
>>> std::unique_ptr<V4L2VideoDevice> video_;
>>> MediaLink *link_;
>>> +
>>> + Size ispMaxInSize_;
>>> };
>>>
>>> class RkISP1MainPath : public RkISP1Path
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