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android: Document the structures and functions for post-processing

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Specifically document:
 - CameraDevice::sendCaptureResults()
 - CameraDevice::completeDescriptor()
 - CameraDevice::streamProcessingComplete()

 - CameraStream::PostProcessorWorker class
 - Camera3RequestDescriptor::StreamBuffer structure

Signed-off-by: Umang Jain <umang.jain@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
This commit is contained in:
Umang Jain 2022-01-04 12:22:00 +05:30
parent a7ab5ef1d2
commit bf0154697b
3 changed files with 87 additions and 0 deletions
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38
src/android/camera_request.cpp
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@ -52,6 +52,44 @@ Camera3RequestDescriptor::Camera3RequestDescriptor(
Camera3RequestDescriptor::~Camera3RequestDescriptor() = default;
/**
* \struct Camera3RequestDescriptor::StreamBuffer
* \brief Group information for per-stream buffer of Camera3RequestDescriptor
*
* A capture request placed to the libcamera HAL can contain multiple streams.
* Each stream will have an associated buffer to be filled. StreamBuffer
* tracks this buffer with contextual information which aids in the stream's
* generation. The generation of the stream will depend on its type (refer to
* the CameraStream::Type documentation).
*
* \var Camera3RequestDescriptor::StreamBuffer::stream
* \brief Pointer to the corresponding CameraStream
*
* \var Camera3RequestDescriptor::StreamBuffer::camera3Buffer
* \brief Native handle to the buffer
*
* \var Camera3RequestDescriptor::StreamBuffer::frameBuffer
* \brief Encapsulate the dmabuf handle inside a libcamera::FrameBuffer for
* direct streams
*
* \var Camera3RequestDescriptor::StreamBuffer::fence
* \brief Acquire fence of the buffer
*
* \var Camera3RequestDescriptor::StreamBuffer::status
* \brief Track the status of the buffer
*
* \var Camera3RequestDescriptor::StreamBuffer::internalBuffer
* \brief Pointer to a buffer internally handled by CameraStream (if any)
*
* \var Camera3RequestDescriptor::StreamBuffer::srcBuffer
* \brief Pointer to the source frame buffer used for post-processing
*
* \var Camera3RequestDescriptor::StreamBuffer::dstBuffer
* \brief Pointer to the destination frame buffer used for post-processing
*
* \var Camera3RequestDescriptor::StreamBuffer::request
* \brief Back pointer to the Camera3RequestDescriptor to which the StreamBuffer belongs
*/
Camera3RequestDescriptor::StreamBuffer::StreamBuffer(
CameraStream *cameraStream, const camera3_stream_buffer_t &buffer,
Camera3RequestDescriptor *requestDescriptor)