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libcamera: buffer: Add an accessor to the BufferMemory

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Buffer instances reference memory, which is modelled internally by a
BufferMemory instance. Store a pointer to the BufferMemory in the Buffer
class, and populate it when the buffer is queued to the camera through a
request. This is useful for applications to access the buffer memory in
the buffer or request completion handler.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
This commit is contained in:
Laurent Pinchart 2019-07-12 22:32:01 +03:00
parent f1199a1011
commit 689e8916ca
8 changed files with 26 additions and 11 deletions
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3
src/cam/capture.cpp
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@ -154,7 +154,6 @@ void Capture::requestComplete(Request *request, const std::map<Stream *, Buffer
for (auto it = buffers.begin(); it != buffers.end(); ++it) {
Stream *stream = it->first;
Buffer *buffer = it->second;
BufferMemory *mem = &stream->buffers()[buffer->index()];
const std::string &name = streamName_[stream];
info << " " << name
@ -163,7 +162,7 @@ void Capture::requestComplete(Request *request, const std::map<Stream *, Buffer
<< " bytesused: " << buffer->bytesused();
if (writer_)
writer_->write(buffer, mem, name);
writer_->write(buffer, name);
}
std::cout << info.str() << std::endl;