sf-daq/sf_daq_buffer
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Read also images from SWMR files

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This commit is contained in:
babic_a
2020-04-20 18:16:56 +02:00
parent b9e4eafe52
commit c26e87e5f7
1 changed files with 44 additions and 11 deletions
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sf-buffer/src/sf_reader.cpp
+44 -11
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@@ -27,12 +27,17 @@ int main (int argc, char *argv[]) {
string current_filename = root_folder + "/" + device_name + "/CURRENT";
uint64_t pulse_id_buffer[1000];
uint16_t image_buffer[100*2*512*1024];
string last_open_file = "";
uint64_t last_pulse_id = 0;
int current_file_last_processed = -1;
while (true) {
auto filename = BufferUtils::get_latest_file(current_filename);
// Next file not yet ready.
if (last_open_file == filename) {
this_thread::sleep_for(chrono::milliseconds(100));
cout << "Waiting for CURRENT to change." << endl;
@@ -41,7 +46,7 @@ int main (int argc, char *argv[]) {
std::cout << "Opening " << filename << endl;
last_open_file = filename;
last_pulse_id = 0;
current_file_last_processed = -1;
H5::H5File input_file(filename, H5F_ACC_RDONLY | H5F_ACC_SWMR_READ);
auto image_dataset = input_file.openDataSet("image");
@@ -50,32 +55,60 @@ int main (int argc, char *argv[]) {
::memset(pulse_id_buffer, 0, sizeof(pulse_id_buffer));
while (true) {
this_thread::sleep_for(chrono::milliseconds(100));
H5Drefresh(pulse_id_dataset.getId());
pulse_id_dataset.read(
pulse_id_buffer,
H5::PredType::NATIVE_UINT64);
auto file_frame_index =
BufferUtils::get_file_frame_index(last_pulse_id);
size_t n_new_pulses = 0;
for (size_t i=file_frame_index; i<1000; i++) {
if (pulse_id_buffer[i] > last_pulse_id) {
last_pulse_id = pulse_id_buffer[i];
for (size_t i=current_file_last_processed+1; i<1000; i++) {
if (pulse_id_buffer[i] > 0) {
n_new_pulses++;
}
}
// There is more stuff to be processed.
if (n_new_pulses > 0) {
cout << last_pulse_id << " and n_new_pulses ";
cout << n_new_pulses << endl;
// TODO: Just temporary due to buffer size.
if (n_new_pulses > 100) {
n_new_pulses = 100;
}
uint64_t start_pulse_id = current_file_last_processed+1;
uint64_t end_pulse_id =
current_file_last_processed + n_new_pulses;
hsize_t buff_dim[3] = {100, 512, 1024};
H5::DataSpace buffer_space (3, buff_dim);
hsize_t b_count[] = {n_new_pulses, 512, 1024};
hsize_t b_start[] = {0, 0, 0};
buffer_space.selectHyperslab(H5S_SELECT_SET, b_count, b_start);
hsize_t disk_dim[3] = {1000, 512, 1024};
H5::DataSpace disk_space(3, disk_dim);
hsize_t d_count[] = {n_new_pulses, 512, 1024};
hsize_t d_start[] = {start_pulse_id, 0, 0};
disk_space.selectHyperslab(H5S_SELECT_SET, d_count, d_start);
image_dataset.read(
image_buffer,
H5::PredType::NATIVE_UINT16,
buffer_space,
disk_space);
current_file_last_processed = end_pulse_id;
}
// Time for next file.
if (pulse_id_buffer[999] != 0) {
break;
}
// Stream delay.
this_thread::sleep_for(chrono::milliseconds(100));
H5Drefresh(pulse_id_dataset.getId());
}
}