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libcamera, android, cam, gstreamer, qcam, v4l2: Reuse Request

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Allow reuse of the Request object by implementing reuse(). This means
the applications now have the responsibility of freeing the Request
objects, so make all libcamera users (cam, qcam, v4l2-compat, gstreamer,
android) do so.

Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
This commit is contained in:
Paul Elder 2020-09-23 19:05:41 +09:00
parent 05cdef27ab
commit c753223ad6
15 changed files with 163 additions and 109 deletions
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29
src/cam/capture.cpp
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@ -65,6 +65,8 @@ int Capture::run(const OptionsParser::Options &options)
writer_ = nullptr;
}
requests_.clear();
delete allocator;
return ret;
@ -92,9 +94,8 @@ int Capture::capture(FrameBufferAllocator *allocator)
* example pushing a button. For now run all streams all the time.
*/
std::vector<Request *> requests;
for (unsigned int i = 0; i < nbuffers; i++) {
Request *request = camera_->createRequest();
std::unique_ptr<Request> request = camera_->createRequest();
if (!request) {
std::cerr << "Can't create request" << std::endl;
return -ENOMEM;
@ -117,7 +118,7 @@ int Capture::capture(FrameBufferAllocator *allocator)
writer_->mapBuffer(buffer.get());
}
requests.push_back(request);
requests_.push_back(std::move(request));
}
ret = camera_->start();
@ -126,8 +127,8 @@ int Capture::capture(FrameBufferAllocator *allocator)
return ret;
}
for (Request *request : requests) {
ret = camera_->queueRequest(request);
for (std::unique_ptr<Request> &request : requests_) {
ret = camera_->queueRequest(request.get());
if (ret < 0) {
std::cerr << "Can't queue request" << std::endl;
camera_->stop();
@ -202,22 +203,6 @@ void Capture::requestComplete(Request *request)
return;
}
/*
* Create a new request and populate it with one buffer for each
* stream.
*/
request = camera_->createRequest();
if (!request) {
std::cerr << "Can't create request" << std::endl;
return;
}
for (auto it = buffers.begin(); it != buffers.end(); ++it) {
const Stream *stream = it->first;
FrameBuffer *buffer = it->second;
request->addBuffer(stream, buffer);
}
request->reuse(Request::ReuseBuffers);
camera_->queueRequest(request);
}