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libcamera: pipeline: ipa: raspberrypi: Rework drop frame signalling

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The IPA now signals up front how many frames it wants the pipeline
handler to drop. This makes it easier to handle up-coming changes to the
buffer handling for import/export buffers.

Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: David Plowman <david.plowman@raspberrypi.com>
Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
This commit is contained in:
Naushir Patuck 2020-09-18 10:42:23 +01:00 • committed by Niklas Söderlund
parent 6bca768a0b
commit 8404d02d75
3 changed files with 33 additions and 25 deletions
Download patch file Download diff file Expand all files Collapse all files

2
include/libcamera/ipa/raspberrypi.h
View file

@ -14,6 +14,7 @@ enum RPiConfigParameters {
RPI_IPA_CONFIG_LS_TABLE = (1 << 0),
RPI_IPA_CONFIG_STAGGERED_WRITE = (1 << 1),
RPI_IPA_CONFIG_SENSOR = (1 << 2),
RPI_IPA_CONFIG_DROP_FRAMES = (1 << 3),
};
enum RPiOperations {
@ -21,7 +22,6 @@ enum RPiOperations {
RPI_IPA_ACTION_V4L2_SET_ISP,
RPI_IPA_ACTION_STATS_METADATA_COMPLETE,
RPI_IPA_ACTION_RUN_ISP,
RPI_IPA_ACTION_RUN_ISP_AND_DROP_FRAME,
RPI_IPA_ACTION_EMBEDDED_COMPLETE,
RPI_IPA_EVENT_SIGNAL_STAT_READY,
RPI_IPA_EVENT_SIGNAL_ISP_PREPARE,

18
src/ipa/raspberrypi/raspberrypi.cpp
View file

@ -65,8 +65,8 @@ class IPARPi : public IPAInterface
public:
IPARPi()
: lastMode_({}), controller_(), controllerInit_(false),
frame_count_(0), check_count_(0), hide_count_(0),
mistrust_count_(0), lsTable_(nullptr)
frame_count_(0), check_count_(0), mistrust_count_(0),
lsTable_(nullptr)
{
}
@ -137,8 +137,6 @@ private:
uint64_t frame_count_;
/* For checking the sequencing of Prepare/Process calls. */
uint64_t check_count_;
/* How many frames the pipeline handler should hide, or "drop". */
unsigned int hide_count_;
/* How many frames we should avoid running control algos on. */
unsigned int mistrust_count_;
/* LS table allocation passed in from the pipeline handler. */
@ -242,14 +240,18 @@ void IPARPi::configure(const CameraSensorInfo &sensorInfo,
*/
frame_count_ = 0;
check_count_ = 0;
unsigned int drop_frame = 0;
if (controllerInit_) {
hide_count_ = helper_->HideFramesModeSwitch();
drop_frame = helper_->HideFramesModeSwitch();
mistrust_count_ = helper_->MistrustFramesModeSwitch();
} else {
hide_count_ = helper_->HideFramesStartup();
drop_frame = helper_->HideFramesStartup();
mistrust_count_ = helper_->MistrustFramesStartup();
}
result->data.push_back(drop_frame);
result->operation |= RPI_IPA_CONFIG_DROP_FRAMES;
struct AgcStatus agcStatus;
/* These zero values mean not program anything (unless overwritten). */
agcStatus.shutter_time = 0.0;
@ -366,13 +368,11 @@ void IPARPi::processEvent(const IPAOperationData &event)
* they are "unreliable".
*/
prepareISP(embeddedbufferId);
frame_count_++;
/* Ready to push the input buffer into the ISP. */
IPAOperationData op;
if (++frame_count_ > hide_count_)
op.operation = RPI_IPA_ACTION_RUN_ISP;
else
op.operation = RPI_IPA_ACTION_RUN_ISP_AND_DROP_FRAME;
op.data = { bayerbufferId & RPiIpaMask::ID };
queueFrameAction.emit(0, op);
break;

36
src/libcamera/pipeline/raspberrypi/raspberrypi.cpp
View file

@ -132,7 +132,7 @@ class RPiCameraData : public CameraData
public:
RPiCameraData(PipelineHandler *pipe)
: CameraData(pipe), sensor_(nullptr), state_(State::Stopped),
dropFrame_(false), ispOutputCount_(0)
dropFrameCount_(0), ispOutputCount_(0)
{
}
@ -180,14 +180,15 @@ public:
std::queue<FrameBuffer *> embeddedQueue_;
std::deque<Request *> requestQueue_;
unsigned int dropFrameCount_;
private:
void checkRequestCompleted();
void tryRunPipeline();
void tryFlushQueues();
FrameBuffer *updateQueue(std::queue<FrameBuffer *> &q, uint64_t timestamp, V4L2VideoDevice *dev);
bool dropFrame_;
int ispOutputCount_;
unsigned int ispOutputCount_;
};
class RPiCameraConfiguration : public CameraConfiguration
@ -1007,6 +1008,7 @@ int RPiCameraData::configureIPA()
ipa_->configure(sensorInfo, streamConfig, entityControls, ipaConfig,
&result);
unsigned int resultIdx = 0;
if (result.operation & RPI_IPA_CONFIG_STAGGERED_WRITE) {
/*
* Setup our staggered control writer with the sensor default
@ -1014,9 +1016,9 @@ int RPiCameraData::configureIPA()
*/
if (!staggeredCtrl_) {
staggeredCtrl_.init(unicam_[Unicam::Image].dev(),
{ { V4L2_CID_ANALOGUE_GAIN, result.data[0] },
{ V4L2_CID_EXPOSURE, result.data[1] } });
sensorMetadata_ = result.data[2];
{ { V4L2_CID_ANALOGUE_GAIN, result.data[resultIdx++] },
{ V4L2_CID_EXPOSURE, result.data[resultIdx++] } });
sensorMetadata_ = result.data[resultIdx++];
}
}
@ -1026,6 +1028,11 @@ int RPiCameraData::configureIPA()
LOG(RPI, Error) << "V4L2 staggered set failed";
}
if (result.operation & RPI_IPA_CONFIG_DROP_FRAMES) {
/* Configure the number of dropped frames required on startup. */
dropFrameCount_ = result.data[resultIdx++];
}
return 0;
}
@ -1077,7 +1084,6 @@ void RPiCameraData::queueFrameAction([[maybe_unused]] unsigned int frame,
break;
}
case RPI_IPA_ACTION_RUN_ISP_AND_DROP_FRAME:
case RPI_IPA_ACTION_RUN_ISP: {
unsigned int bufferId = action.data[0];
FrameBuffer *buffer = unicam_[Unicam::Image].getBuffers()->at(bufferId).get();
@ -1086,7 +1092,6 @@ void RPiCameraData::queueFrameAction([[maybe_unused]] unsigned int frame,
<< ", timestamp: " << buffer->metadata().timestamp;
isp_[Isp::Input].dev()->queueBuffer(buffer);
dropFrame_ = (action.operation == RPI_IPA_ACTION_RUN_ISP_AND_DROP_FRAME) ? true : false;
ispOutputCount_ = 0;
break;
}
@ -1252,7 +1257,7 @@ void RPiCameraData::clearIncompleteRequests()
void RPiCameraData::handleStreamBuffer(FrameBuffer *buffer, const RPi::RPiStream *stream)
{
if (stream->isExternal()) {
if (!dropFrame_) {
if (!dropFrameCount_) {
Request *request = buffer->request();
pipe_->completeBuffer(camera_, request, buffer);
}
@ -1264,7 +1269,7 @@ void RPiCameraData::handleStreamBuffer(FrameBuffer *buffer, const RPi::RPiStream
* simply memcpy to the Request buffer and requeue back to the
* device.
*/
if (stream == &unicam_[Unicam::Image] && !dropFrame_) {
if (stream == &unicam_[Unicam::Image] && !dropFrameCount_) {
const Stream *rawStream = static_cast<const Stream *>(&isp_[Isp::Input]);
Request *request = requestQueue_.front();
FrameBuffer *raw = request->findBuffer(const_cast<Stream *>(rawStream));
@ -1309,7 +1314,7 @@ void RPiCameraData::checkRequestCompleted()
* If we are dropping this frame, do not touch the request, simply
* change the state to IDLE when ready.
*/
if (!dropFrame_) {
if (!dropFrameCount_) {
Request *request = requestQueue_.front();
if (request->hasPendingBuffers())
return;
@ -1328,10 +1333,13 @@ void RPiCameraData::checkRequestCompleted()
* frame.
*/
if (state_ == State::IpaComplete &&
((ispOutputCount_ == 3 && dropFrame_) || requestCompleted)) {
((ispOutputCount_ == 3 && dropFrameCount_) || requestCompleted)) {
state_ = State::Idle;
if (dropFrame_)
LOG(RPI, Info) << "Dropping frame at the request of the IPA";
if (dropFrameCount_) {
dropFrameCount_--;
LOG(RPI, Info) << "Dropping frame at the request of the IPA ("
<< dropFrameCount_ << " left)";
}
}
}