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delayed_controls: Remove reduandant firstSequence_

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The DelayedControls implementation tracked the sequence numbers to
determine the offset if a device did not commence with a sequence number
of 0.

This guarantee is now handled by the V4L2VideoDevice.

Remove the firstSequence_ offset and the corresponding running_ flag
which was used to track setting firstSequence_ from the DelayedControls.

Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
This commit is contained in:
Kieran Bingham 2022-07-04 14:37:51 +01:00
parent b3fd8e14b5
commit 6f539a6d2f
2 changed files with 2 additions and 13 deletions
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3
include/libcamera/internal/delayed_controls.h
View file

@ -72,9 +72,6 @@ private:
std::unordered_map<const ControlId *, ControlParams> controlParams_;
unsigned int maxDelay_;
bool running_;
uint32_t firstSequence_;
uint32_t queueCount_;
uint32_t writeCount_;
/* \todo Evaluate if we should index on ControlId * or unsigned int */

12
src/libcamera/delayed_controls.cpp
View file

@ -115,8 +115,6 @@ DelayedControls::DelayedControls(V4L2Device *device,
*/
void DelayedControls::reset()
{
running_ = false;
firstSequence_ = 0;
queueCount_ = 1;
writeCount_ = 0;
@ -204,8 +202,7 @@ bool DelayedControls::push(const ControlList &controls)
*/
ControlList DelayedControls::get(uint32_t sequence)
{
uint32_t adjustedSeq = sequence - firstSequence_;
unsigned int index = std::max<int>(0, adjustedSeq - maxDelay_);
unsigned int index = std::max<int>(0, sequence - maxDelay_);
ControlList out(device_->controls());
for (const auto &ctrl : values_) {
@ -236,11 +233,6 @@ void DelayedControls::applyControls(uint32_t sequence)
{
LOG(DelayedControls, Debug) << "frame " << sequence << " started";
if (!running_) {
firstSequence_ = sequence;
running_ = true;
}
/*
* Create control list peeking ahead in the value queue to ensure
* values are set in time to satisfy the sensor delay.
@ -279,7 +271,7 @@ void DelayedControls::applyControls(uint32_t sequence)
}
}
writeCount_ = sequence - firstSequence_ + 1;
writeCount_ = sequence + 1;
while (writeCount_ > queueCount_) {
LOG(DelayedControls, Debug)