626172a16b
Source files in libcamera start by a comment block header, which
includes the file name and a one-line description of the file contents.
While the latter is useful to get a quick overview of the file contents
at a glance, the former is mostly a source of inconvenience. The name in
the comments can easily get out of sync with the file name when files
are renamed, and copy & paste during development have often lead to
incorrect names being used to start with.
Readers of the source code are expected to know which file they're
looking it. Drop the file name from the header comment block.
The change was generated with the following script:
----------------------------------------
dirs="include/libcamera src test utils"
declare -rA patterns=(
['c']=' \* '
['cpp']=' \* '
['h']=' \* '
['py']='# '
['sh']='# '
)
for ext in ${!patterns[@]} ; do
files=$(for dir in $dirs ; do find $dir -name "*.${ext}" ; done)
pattern=${patterns[${ext}]}
for file in $files ; do
name=$(basename ${file})
sed -i "s/^\(${pattern}\)${name} - /\1/" "$file"
done
done
----------------------------------------
This misses several files that are out of sync with the comment block
header. Those will be addressed separately and manually.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Daniel Scally <dan.scally@ideasonboard.com>
147 lines
3.5 KiB
C++
147 lines
3.5 KiB
C++
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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/*
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* Copyright (C) 2018, Google Inc.
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*
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* Pipeline handler infrastructure
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*/
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#pragma once
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#include <memory>
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#include <queue>
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#include <set>
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#include <string>
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#include <sys/types.h>
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#include <vector>
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#include <libcamera/base/mutex.h>
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#include <libcamera/base/object.h>
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#include <libcamera/controls.h>
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#include <libcamera/stream.h>
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#include "libcamera/internal/ipa_proxy.h"
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namespace libcamera {
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class Camera;
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class CameraConfiguration;
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class CameraManager;
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class DeviceEnumerator;
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class DeviceMatch;
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class FrameBuffer;
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class MediaDevice;
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class PipelineHandler;
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class Request;
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class PipelineHandler : public std::enable_shared_from_this<PipelineHandler>,
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public Object
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{
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public:
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PipelineHandler(CameraManager *manager);
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virtual ~PipelineHandler();
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virtual bool match(DeviceEnumerator *enumerator) = 0;
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MediaDevice *acquireMediaDevice(DeviceEnumerator *enumerator,
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const DeviceMatch &dm);
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bool acquire();
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void release(Camera *camera);
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virtual std::unique_ptr<CameraConfiguration> generateConfiguration(Camera *camera,
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Span<const StreamRole> roles) = 0;
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virtual int configure(Camera *camera, CameraConfiguration *config) = 0;
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virtual int exportFrameBuffers(Camera *camera, Stream *stream,
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std::vector<std::unique_ptr<FrameBuffer>> *buffers) = 0;
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virtual int start(Camera *camera, const ControlList *controls) = 0;
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void stop(Camera *camera);
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bool hasPendingRequests(const Camera *camera) const;
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void registerRequest(Request *request);
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void queueRequest(Request *request);
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bool completeBuffer(Request *request, FrameBuffer *buffer);
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void completeRequest(Request *request);
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std::string configurationFile(const std::string &subdir,
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const std::string &name) const;
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const char *name() const { return name_; }
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protected:
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void registerCamera(std::shared_ptr<Camera> camera);
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void hotplugMediaDevice(MediaDevice *media);
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virtual int queueRequestDevice(Camera *camera, Request *request) = 0;
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virtual void stopDevice(Camera *camera) = 0;
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virtual void releaseDevice(Camera *camera);
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CameraManager *manager_;
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private:
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void unlockMediaDevices();
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void mediaDeviceDisconnected(MediaDevice *media);
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virtual void disconnect();
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void doQueueRequest(Request *request);
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void doQueueRequests();
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std::vector<std::shared_ptr<MediaDevice>> mediaDevices_;
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std::vector<std::weak_ptr<Camera>> cameras_;
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std::queue<Request *> waitingRequests_;
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const char *name_;
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Mutex lock_;
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unsigned int useCount_ LIBCAMERA_TSA_GUARDED_BY(lock_);
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friend class PipelineHandlerFactoryBase;
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};
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class PipelineHandlerFactoryBase
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{
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public:
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PipelineHandlerFactoryBase(const char *name);
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virtual ~PipelineHandlerFactoryBase() = default;
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std::shared_ptr<PipelineHandler> create(CameraManager *manager) const;
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const std::string &name() const { return name_; }
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static std::vector<PipelineHandlerFactoryBase *> &factories();
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private:
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static void registerType(PipelineHandlerFactoryBase *factory);
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virtual std::unique_ptr<PipelineHandler>
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createInstance(CameraManager *manager) const = 0;
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std::string name_;
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};
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template<typename _PipelineHandler>
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class PipelineHandlerFactory final : public PipelineHandlerFactoryBase
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{
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public:
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PipelineHandlerFactory(const char *name)
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: PipelineHandlerFactoryBase(name)
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{
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}
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std::unique_ptr<PipelineHandler>
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createInstance(CameraManager *manager) const override
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{
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return std::make_unique<_PipelineHandler>(manager);
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}
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};
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#define REGISTER_PIPELINE_HANDLER(handler) \
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static PipelineHandlerFactory<handler> global_##handler##Factory(#handler);
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} /* namespace libcamera */
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