df131ad088
Remove the verbose #ifndef/#define/#endif pattern for maintaining header idempotency, and replace it with a simple #pragma once. This simplifies the headers, and prevents redundant changes when header files get moved. Tracepoints.h.in is not modified to use the pragma as it requires self-inclusion. Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com>
85 lines
1.7 KiB
C++
85 lines
1.7 KiB
C++
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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/*
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* Copyright (C) 2020, Raspberry Pi (Trading) Ltd.
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*
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* delayed_controls.h - Helper to deal with controls that take effect with a delay
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*/
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#pragma once
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#include <stdint.h>
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#include <unordered_map>
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#include <libcamera/controls.h>
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namespace libcamera {
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class V4L2Device;
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class DelayedControls
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{
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public:
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struct ControlParams {
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unsigned int delay;
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bool priorityWrite;
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};
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DelayedControls(V4L2Device *device,
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const std::unordered_map<uint32_t, ControlParams> &controlParams);
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void reset();
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bool push(const ControlList &controls);
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ControlList get(uint32_t sequence);
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void applyControls(uint32_t sequence);
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private:
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class Info : public ControlValue
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{
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public:
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Info()
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: updated(false)
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{
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}
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Info(const ControlValue &v, bool updated_ = true)
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: ControlValue(v), updated(updated_)
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{
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}
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bool updated;
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};
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/* \todo: Make the listSize configurable at instance creation time. */
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static constexpr int listSize = 16;
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class ControlRingBuffer : public std::array<Info, listSize>
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{
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public:
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Info &operator[](unsigned int index)
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{
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return std::array<Info, listSize>::operator[](index % listSize);
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}
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const Info &operator[](unsigned int index) const
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{
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return std::array<Info, listSize>::operator[](index % listSize);
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}
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};
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V4L2Device *device_;
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/* \todo Evaluate if we should index on ControlId * or unsigned int */
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std::unordered_map<const ControlId *, ControlParams> controlParams_;
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unsigned int maxDelay_;
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bool running_;
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uint32_t firstSequence_;
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uint32_t queueCount_;
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uint32_t writeCount_;
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/* \todo Evaluate if we should index on ControlId * or unsigned int */
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std::unordered_map<const ControlId *, ControlRingBuffer> values_;
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};
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} /* namespace libcamera */
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