libcamera/pinchartl/libcamera.git - Laurent Pinchart's clone of libcamera

Age	Commit message (Collapse)	Author
2024-08-16	meson: utils: Provide environment for Python scripts	Laurent Pinchart
	Python scripts run as part of the build process need to take a few actions specific to the environment in which they operate. One of those is disabling the Python bytecode cache, to avoid writing .pyc files to the source tree. This is done manually in the IPC generate.py and parser.py scripts. The current implementation is not ideal because it hardcodes in the scripts information related to the environment in which they operate. As those scripts are part of libcamera this is more of a theoretical issue than a practical one. A second issue is that future Python scripts will need to duplicate similar mechanisms, resulting in a higher maintenance burden. Address the issue with a different approach, by creating a meson environment for the Python scripts, and passing it to the custom_target() functions. The environment only disables the bytecode cache for now. The diffstat shows an increase in code size. This is expected to be offset by usage of the environment for more Python scripts, as well as support of more variables in the environment. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Reviewed-by: Daniel Scally <dan.scally@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
2024-08-15	meson: Move all code generation scripts to utils/codegen/	Laurent Pinchart
	We have multiple code generation scripts in utils/, mixed with other miscellaneous utilities, as well as a larger code base based on mojom in utils/ipc/. To make code sharing easier between the generator scripts, without creating a mess in the utils/ directory, move all the code generation code to utils/codegen/. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Daniel Scally <dan.scally@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>

/* SPDX-License-Identifier: LGPL-2.1-or-later */ /* * Copyright (C) 2019-2021, Google Inc. * * libcamera Android Camera Request Descriptor */ #include "camera_request.h" #include <libcamera/base/span.h> #include "camera_buffer.h" using namespace libcamera; /* * \class Camera3RequestDescriptor * * A utility class that groups information about a capture request to be later * reused at request complete time to notify the framework. * ******************************************************************************* * Lifetime of a Camera3RequestDescriptor tracking a capture request placed by * Android Framework ******************************************************************************* * * * Android Framework * │ * │ ┌──────────────────────────────────┐ * │ │camera3_capture_request_t │ * │ │ │ * │ │Requested output streams │ * │ │ stream1 stream2 stream3 ... │ * │ └──────────────────────────────────┘ * ▼ * ┌─────────────────────────────────────────────────────────────┐ * │ libcamera HAL │ * ├─────────────────────────────────────────────────────────────┤ * │ CameraDevice │ * │ │ * │ processCaptureRequest(camera3_capture_request_t request) │ * │ │ * │ - Create Camera3RequestDescriptor tracking this request │ * │ - Streams requiring post-processing are stored in the │ * │ pendingStreamsToProcess map │ * │ - Add this Camera3RequestDescriptor to descriptors' queue │ * │ CameraDevice::descriptors_ │ * │ │ ┌─────────────────────────┐ * │ - Queue the capture request to libcamera core ────────────┤►│libcamera core │ * │ │ ├─────────────────────────┤ * │ │ │- Capture from Camera │ * │ │ │ │ * │ │ │- Emit │ * │ │ │ Camera::requestComplete│ * │ requestCompleted(Request *request) ◄───────────────────────┼─┼──── │ * │ │ │ │ * │ - Check request completion status │ └─────────────────────────┘ * │ │ * │ - if (pendingStreamsToProcess > 0) │ * │ Queue all entries from pendingStreamsToProcess │ * │ else │ │ * │ completeDescriptor() │ └──────────────────────┐ * │ │ │ * │ ┌──────────────────────────┴───┬──────────────────┐ │ * │ │ │ │ │ * │ ┌──────────▼────────────┐ ┌───────────▼─────────┐ ▼ │ * │ │CameraStream1 │ │CameraStream2 │ .... │ * │ ├┬───┬───┬──────────────┤ ├┬───┬───┬────────────┤ │ * │ ││ │ │ │ ││ │ │ │ │ * │ │▼───▼───▼──────────────┤ │▼───▼───▼────────────┤ │ * │ │PostProcessorWorker │ │PostProcessorWorker │ │ * │ │ │ │ │ │ * │ │ +------------------+ │ │ +------------------+│ │ * │ │ | PostProcessor | │ │ | PostProcessor |│ │ * │ │ | process() | │ │ | process() |│ │ * │ │ | | │ │ | |│ │ * │ │ | Emit | │ │ | Emit |│ │ * │ │ | processComplete | │ │ | processComplete |│ │ * │ │ | | │ │ | |│ │ * │ │ +--------------│---+ │ │ +--------------│---+│ │ * │ │ │ │ │ │ │ │ * │ │ │ │ │ │ │ │ * │ └────────────────┼──────┘ └────────────────┼────┘ │ * │ │ │ │ * │ │ │ │ * │ │ │ │ * │ ▼ ▼ │ * │ +---------------------------------------+ +--------------+ │ * │ | CameraDevice | | | │ * │ | | | | │ * │ | streamProcessingComplete() | | | │ * │ | | | | │ * │ | - Check and set buffer status | | .... | │ * │ | - Remove post+processing entry | | | │ * │ | from pendingStreamsToProcess | | | │ * │ | | | | │ * │ | - if (pendingStreamsToProcess.empty())| | | │ * │ | completeDescriptor | | | │ * │ | | | | │ * │ +---------------------------------------+ +--------------+ │ * │ │ * └────────────────────────────────────────────────────────────────────────────────────┘ * * +-------------+ * | | - PostProcessorWorker's thread * | | * +-------------+ */ Camera3RequestDescriptor::Camera3RequestDescriptor( Camera *camera, const camera3_capture_request_t *camera3Request) { frameNumber_ = camera3Request->frame_number; /* Copy the camera3 request stream information for later access. */ const Span<const camera3_stream_buffer_t> buffers{ camera3Request->output_buffers, camera3Request->num_output_buffers }; buffers_.reserve(buffers.size()); for (const camera3_stream_buffer_t &buffer : buffers) { CameraStream *stream = static_cast<CameraStream *>(buffer.stream->priv); buffers_.emplace_back(stream, buffer, this); } /* Clone the controls associated with the camera3 request. */ settings_ = CameraMetadata(camera3Request->settings); /* * Create the CaptureRequest, stored as a unique_ptr<> to tie its * lifetime to the descriptor. */ request_ = camera->createRequest(reinterpret_cast<uint64_t>(this)); } 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) : stream(cameraStream), camera3Buffer(buffer.buffer), fence(buffer.acquire_fence), request(requestDescriptor) { } Camera3RequestDescriptor::StreamBuffer::~StreamBuffer() = default; Camera3RequestDescriptor::StreamBuffer::StreamBuffer(StreamBuffer &&) = default; Camera3RequestDescriptor::StreamBuffer & Camera3RequestDescriptor::StreamBuffer::operator=(Camera3RequestDescriptor::StreamBuffer &&) = default;