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pipeline: raspberrypi: Simplify RPiCameraData::clearIncompleteRequests()

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With the addition of FrameBuffer::cancel(), the logic to clear and return
pending requests can be simplified by not having to queue all the request
buffers to the device before calling streamOff().

Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Tested-by: David Plowman <david.plowman@raspberrypi.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
This commit is contained in:
Naushir Patuck 2021-06-03 13:43:45 +01:00 • committed by Jacopo Mondi
parent 4bb81dfcc4
commit d372aaa10d
1 changed files with 8 additions and 38 deletions
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46
src/libcamera/pipeline/raspberrypi/raspberrypi.cpp
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@ -884,7 +884,9 @@ void PipelineHandlerRPi::stop(Camera *camera)
/* Disable SOF event generation. */
data->unicam_[Unicam::Image].dev()->setFrameStartEnabled(false);
/* This also stops the streams. */
for (auto const stream : data->streams_)
stream->dev()->streamOff();
data->clearIncompleteRequests();
data->bayerQueue_ = {};
data->embeddedQueue_ = {};
@ -1477,49 +1479,17 @@ void RPiCameraData::ispOutputDequeue(FrameBuffer *buffer)
void RPiCameraData::clearIncompleteRequests()
{
/*
* Queue up any buffers passed in the request.
* This is needed because streamOff() will then mark the buffers as
* cancelled.
*/
for (auto const request : requestQueue_) {
for (auto const stream : streams_) {
if (!stream->isExternal())
continue;
FrameBuffer *buffer = request->findBuffer(stream);
if (buffer)
stream->queueBuffer(buffer);
}
}
/* Stop all streams. */
for (auto const stream : streams_)
stream->dev()->streamOff();
/*
* All outstanding requests (and associated buffers) must be returned
* back to the pipeline. The buffers would have been marked as
* cancelled by the call to streamOff() earlier.
* back to the application.
*/
while (!requestQueue_.empty()) {
Request *request = requestQueue_.front();
/*
* A request could be partially complete,
* i.e. we have returned some buffers, but still waiting
* for others or waiting for metadata.
*/
for (auto const stream : streams_) {
if (!stream->isExternal())
continue;
FrameBuffer *buffer = request->findBuffer(stream);
/*
* Has the buffer already been handed back to the
* request? If not, do so now.
*/
if (buffer && buffer->request())
pipe_->completeBuffer(request, buffer);
for (auto &b : request->buffers()) {
FrameBuffer *buffer = b.second;
buffer->cancel();
pipe_->completeBuffer(request, buffer);
}
pipe_->completeRequest(request);