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-rw-r--r--src/qcam/main_window.cpp15
-rw-r--r--src/qcam/main_window.h1
2 files changed, 12 insertions, 4 deletions
diff --git a/src/qcam/main_window.cpp b/src/qcam/main_window.cpp
index 1adaae60..3669c0b9 100644
--- a/src/qcam/main_window.cpp
+++ b/src/qcam/main_window.cpp
@@ -10,6 +10,7 @@
#include <iomanip>
#include <string>
#include <sys/mman.h>
+#include <unistd.h>
#include <QComboBox>
#include <QCoreApplication>
@@ -472,10 +473,14 @@ int MainWindow::startCapture()
for (const std::unique_ptr<FrameBuffer> &buffer : allocator_->buffers(stream)) {
/* Map memory buffers and cache the mappings. */
const FrameBuffer::Plane &plane = buffer->planes().front();
- void *memory = mmap(NULL, plane.length, PROT_READ, MAP_SHARED,
+ size_t length = lseek(plane.fd.fd(), 0, SEEK_END);
+ void *memory = mmap(NULL, length, PROT_READ, MAP_SHARED,
plane.fd.fd(), 0);
+
mappedBuffers_[buffer.get()] = { static_cast<uint8_t *>(memory),
plane.length };
+ planeData_[buffer.get()] = { static_cast<uint8_t *>(memory) + plane.offset,
+ plane.length };
/* Store buffers on the free list. */
freeBuffers_[stream].enqueue(buffer.get());
@@ -542,6 +547,7 @@ error:
munmap(buffer.data(), buffer.size());
}
mappedBuffers_.clear();
+ planeData_.clear();
freeBuffers_.clear();
@@ -578,6 +584,7 @@ void MainWindow::stopCapture()
munmap(buffer.data(), buffer.size());
}
mappedBuffers_.clear();
+ planeData_.clear();
requests_.clear();
freeQueue_.clear();
@@ -674,10 +681,10 @@ void MainWindow::processRaw(FrameBuffer *buffer,
"DNG Files (*.dng)");
if (!filename.isEmpty()) {
- const Span<uint8_t> &mapped = mappedBuffers_[buffer];
+ uint8_t *memory = planeData_[buffer].data();
DNGWriter::write(filename.toStdString().c_str(), camera_.get(),
rawStream_->configuration(), metadata, buffer,
- mapped.data());
+ memory);
}
#endif
@@ -754,7 +761,7 @@ void MainWindow::processViewfinder(FrameBuffer *buffer)
<< "fps:" << Qt::fixed << qSetRealNumberPrecision(2) << fps;
/* Render the frame on the viewfinder. */
- viewfinder_->render(buffer, mappedBuffers_[buffer]);
+ viewfinder_->render(buffer, planeData_[buffer]);
}
void MainWindow::queueRequest(FrameBuffer *buffer)
diff --git a/src/qcam/main_window.h b/src/qcam/main_window.h
index 6788de8d..28244bca 100644
--- a/src/qcam/main_window.h
+++ b/src/qcam/main_window.h
@@ -107,6 +107,7 @@ private:
std::unique_ptr<CameraConfiguration> config_;
std::map<FrameBuffer *, Span<uint8_t>> mappedBuffers_;
+ std::map<FrameBuffer *, Span<uint8_t>> planeData_;
/* Capture state, buffers queue and statistics */
bool isCapturing_;