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libcamera: vimc: Fill stride and frameSize at config validation

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Fill the stride and frameSize fields of the StreamConfiguration at
configuration validation time instead of at camera configuration time.
This allows applications to get the stride when trying a configuration
without modifying the active configuration of the camera.

Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
This commit is contained in:
Paul Elder 2020-07-04 17:56:47 +09:00
parent d0395efd3a
commit 7c3831d2d1
1 changed files with 18 additions and 5 deletions
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23
src/libcamera/pipeline/vimc/vimc.cpp
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@ -72,9 +72,12 @@ public:
class VimcCameraConfiguration : public CameraConfiguration
{
public:
VimcCameraConfiguration();
VimcCameraConfiguration(VimcCameraData *data);
Status validate() override;
private:
VimcCameraData *data_;
};
class PipelineHandlerVimc : public PipelineHandler
@ -115,8 +118,8 @@ static const std::map<PixelFormat, uint32_t> pixelformats{
} /* namespace */
VimcCameraConfiguration::VimcCameraConfiguration()
: CameraConfiguration()
VimcCameraConfiguration::VimcCameraConfiguration(VimcCameraData *data)
: CameraConfiguration(), data_(data)
{
}
@ -160,6 +163,17 @@ CameraConfiguration::Status VimcCameraConfiguration::validate()
cfg.bufferCount = 4;
V4L2DeviceFormat format = {};
format.fourcc = data_->video_->toV4L2PixelFormat(cfg.pixelFormat);
format.size = cfg.size;
int ret = data_->video_->tryFormat(&format);
if (ret)
return Invalid;
cfg.stride = format.planes[0].bpl;
cfg.frameSize = format.planes[0].size;
return status;
}
@ -171,8 +185,8 @@ PipelineHandlerVimc::PipelineHandlerVimc(CameraManager *manager)
CameraConfiguration *PipelineHandlerVimc::generateConfiguration(Camera *camera,
const StreamRoles &roles)
{
CameraConfiguration *config = new VimcCameraConfiguration();
VimcCameraData *data = cameraData(camera);
CameraConfiguration *config = new VimcCameraConfiguration(data);
if (roles.empty())
return config;
@ -282,7 +296,6 @@ int PipelineHandlerVimc::configure(Camera *camera, CameraConfiguration *config)
return ret;
cfg.setStream(&data->stream_);
cfg.stride = format.planes[0].bpl;
return 0;
}