* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
+#ifdef _WIN32
+// Windows: Avoid boost/thread namespace pollution (which includes windows.h).
+#define NOGDI
+#define NORESOURCE
+#endif
+#include <boost/thread/locks.hpp>
+#include <boost/thread/shared_mutex.hpp>
+
#ifdef ENABLE_DECODE
#include <libsigrokdecode/libsigrokdecode.h>
#endif
#include "data/logicsegment.hpp"
#include "data/decode/decoder.hpp"
+#include "devices/hardwaredevice.hpp"
+#include "devices/sessionfile.hpp"
+
#include "view/analogsignal.hpp"
#include "view/decodetrace.hpp"
#include "view/logicsignal.hpp"
using std::list;
using std::map;
using std::mutex;
+using std::recursive_mutex;
using std::set;
using std::shared_ptr;
using std::string;
using sigrok::ChannelType;
using sigrok::ConfigKey;
using sigrok::DatafeedCallbackFunction;
-using sigrok::Device;
using sigrok::Error;
-using sigrok::HardwareDevice;
using sigrok::Header;
using sigrok::Logic;
using sigrok::Meta;
namespace pv {
Session::Session(DeviceManager &device_manager) :
device_manager_(device_manager),
- session_(device_manager.context()->create_session()),
capture_state_(Stopped),
cur_samplerate_(0)
{
- set_default_device();
}
Session::~Session()
return device_manager_;
}
-const shared_ptr<sigrok::Session>& Session::session() const
+shared_ptr<sigrok::Session> Session::session() const
{
- return session_;
+ if (!device_)
+ return shared_ptr<sigrok::Session>();
+ return device_->session();
}
-shared_ptr<Device> Session::device() const
+shared_ptr<devices::Device> Session::device() const
{
return device_;
}
-void Session::set_device(shared_ptr<Device> device)
+void Session::set_device(shared_ptr<devices::Device> device)
{
+ assert(device);
+
// Ensure we are not capturing before setting the device
stop_capture();
- // Are we setting a session device?
- const auto session_device =
- dynamic_pointer_cast<SessionDevice>(device);
+ if (device_)
+ device_->close();
- // Did we have a session device selected previously?
- const auto prev_session_device =
- dynamic_pointer_cast<SessionDevice>(device_);
+ device_.reset();
- if (device_) {
- session_->remove_datafeed_callbacks();
- if (!prev_session_device) {
- device_->close();
- session_->remove_devices();
- }
+ // Remove all stored data
+ signals_.clear();
+ {
+ shared_lock<shared_mutex> lock(signals_mutex_);
+ for (const shared_ptr<data::SignalData> d : all_signal_data_)
+ d->clear();
}
+ all_signal_data_.clear();
+ cur_logic_segment_.reset();
- if (session_device)
- session_ = session_device->parent();
+ for (auto entry : cur_analog_segments_) {
+ shared_ptr<sigrok::Channel>(entry.first).reset();
+ shared_ptr<data::AnalogSegment>(entry.second).reset();
+ }
+ logic_data_.reset();
decode_traces_.clear();
- if (device) {
- if (!session_device)
- {
- session_ = device_manager_.context()->create_session();
-
- try {
- device->open();
- } catch(const sigrok::Error &e) {
- throw QString(e.what());
- }
-
- session_->add_device(device);
- }
+ signals_changed();
- device_ = device;
- session_->add_datafeed_callback([=]
- (shared_ptr<Device> device, shared_ptr<Packet> packet) {
- data_feed_in(device, packet);
- });
- device_manager_.update_display_name(device);
- update_signals(device);
- } else
- device_ = nullptr;
+ device_ = std::move(device);
+ device_->open();
+ device_->session()->add_datafeed_callback([=]
+ (shared_ptr<sigrok::Device> device, shared_ptr<Packet> packet) {
+ data_feed_in(device, packet);
+ });
+ update_signals();
device_selected();
}
-void Session::set_session_file(const string &name)
-{
- const shared_ptr<sigrok::Session> session =
- device_manager_.context()->load_session(name);
- set_device(session->devices()[0]);
-}
-
void Session::set_default_device()
{
- shared_ptr<HardwareDevice> default_device;
- const list< shared_ptr<HardwareDevice> > &devices =
+ const list< shared_ptr<devices::HardwareDevice> > &devices =
device_manager_.devices();
- if (!devices.empty()) {
- // Fall back to the first device in the list.
- default_device = devices.front();
-
- // Try and find the demo device and select that by default
- for (shared_ptr<HardwareDevice> dev : devices)
- if (dev->driver()->name().compare("demo") == 0) {
- default_device = dev;
- break;
- }
+ if (devices.empty())
+ return;
- set_device(default_device);
- }
+ // Try and find the demo device and select that by default
+ const auto iter = std::find_if(devices.begin(), devices.end(),
+ [] (const shared_ptr<devices::HardwareDevice> &d) {
+ return d->hardware_device()->driver()->name() ==
+ "demo"; });
+ set_device((iter == devices.end()) ? devices.front() : *iter);
}
Session::capture_state Session::get_capture_state() const
void Session::start_capture(function<void (const QString)> error_handler)
{
- stop_capture();
-
- // Check that a device instance has been selected.
if (!device_) {
- qDebug() << "No device selected";
+ error_handler(tr("No active device set, can't start acquisition."));
return;
}
+ stop_capture();
+
// Check that at least one channel is enabled
- auto channels = device_->channels();
- bool enabled = std::any_of(channels.begin(), channels.end(),
- [](shared_ptr<Channel> channel) { return channel->enabled(); });
+ const shared_ptr<sigrok::Device> sr_dev = device_->device();
+ if (sr_dev) {
+ const auto channels = sr_dev->channels();
+ if (!std::any_of(channels.begin(), channels.end(),
+ [](shared_ptr<Channel> channel) {
+ return channel->enabled(); })) {
+ error_handler(tr("No channels enabled."));
+ return;
+ }
+ }
- if (!enabled) {
- error_handler(tr("No channels enabled."));
- return;
+ // Clear signal data
+ {
+ shared_lock<shared_mutex> lock(signals_mutex_);
+ for (const shared_ptr<data::SignalData> d : all_signal_data_)
+ d->clear();
}
// Begin the session
sampling_thread_ = std::thread(
- &Session::sample_thread_proc, this, device_,
- error_handler);
+ &Session::sample_thread_proc, this, error_handler);
}
void Session::stop_capture()
{
if (get_capture_state() != Stopped)
- session_->stop();
+ device_->stop();
// Check that sampling stopped
if (sampling_thread_.joinable())
sampling_thread_.join();
}
-set< shared_ptr<data::SignalData> > Session::get_data() const
+double Session::get_samplerate() const
{
- shared_lock<shared_mutex> lock(signals_mutex_);
- set< shared_ptr<data::SignalData> > data;
- for (const shared_ptr<view::Signal> sig : signals_) {
- assert(sig);
- data.insert(sig->data());
- }
+ double samplerate = 0.0;
- return data;
-}
+ {
+ shared_lock<shared_mutex> lock(signals_mutex_);
+ for (const shared_ptr<pv::data::SignalData> d : all_signal_data_) {
+ assert(d);
+ const vector< shared_ptr<pv::data::Segment> > segments =
+ d->segments();
+ for (const shared_ptr<pv::data::Segment> &s : segments)
+ samplerate = std::max(samplerate, s->samplerate());
+ }
+ }
+ // If there is no sample rate given we use samples as unit
+ if (samplerate == 0.0)
+ samplerate = 1.0;
-boost::shared_mutex& Session::signals_mutex() const
-{
- return signals_mutex_;
+ return samplerate;
}
-const unordered_set< shared_ptr<view::Signal> >& Session::signals() const
+const unordered_set< shared_ptr<view::Signal> > Session::signals() const
{
+ shared_lock<shared_mutex> lock(signals_mutex_);
return signals_;
}
map<const srd_channel*, shared_ptr<view::LogicSignal> > channels;
shared_ptr<data::DecoderStack> decoder_stack;
- try
- {
+ try {
lock_guard<boost::shared_mutex> lock(signals_mutex_);
// Create the decoder
// Make a list of all the channels
std::vector<const srd_channel*> all_channels;
- for(const GSList *i = dec->channels; i; i = i->next)
+ for (const GSList *i = dec->channels; i; i = i->next)
all_channels.push_back((const srd_channel*)i->data);
- for(const GSList *i = dec->opt_channels; i; i = i->next)
+ for (const GSList *i = dec->opt_channels; i; i = i->next)
all_channels.push_back((const srd_channel*)i->data);
// Auto select the initial channels
for (const srd_channel *pdch : all_channels)
- for (shared_ptr<view::Signal> s : signals_)
- {
+ for (shared_ptr<view::Signal> s : signals_) {
shared_ptr<view::LogicSignal> l =
dynamic_pointer_cast<view::LogicSignal>(s);
if (l && QString::fromUtf8(pdch->name).
new view::DecodeTrace(*this, decoder_stack,
decode_traces_.size()));
decode_traces_.push_back(d);
- }
- catch(std::runtime_error e)
- {
+ } catch (std::runtime_error e) {
return false;
}
void Session::remove_decode_signal(view::DecodeTrace *signal)
{
for (auto i = decode_traces_.begin(); i != decode_traces_.end(); i++)
- if ((*i).get() == signal)
- {
+ if ((*i).get() == signal) {
decode_traces_.erase(i);
signals_changed();
return;
void Session::set_capture_state(capture_state state)
{
- lock_guard<mutex> lock(sampling_mutex_);
- const bool changed = capture_state_ != state;
- capture_state_ = state;
- if(changed)
+ bool changed;
+
+ {
+ lock_guard<mutex> lock(sampling_mutex_);
+ changed = capture_state_ != state;
+ capture_state_ = state;
+ }
+
+ if (changed)
capture_state_changed(state);
}
-void Session::update_signals(shared_ptr<Device> device)
+void Session::update_signals()
{
- assert(device);
- assert(capture_state_ == Stopped);
+ if (!device_) {
+ signals_.clear();
+ logic_data_.reset();
+ return;
+ }
+
+ lock_guard<recursive_mutex> lock(data_mutex_);
+
+ const shared_ptr<sigrok::Device> sr_dev = device_->device();
+ if (!sr_dev) {
+ signals_.clear();
+ logic_data_.reset();
+ return;
+ }
// Detect what data types we will receive
- auto channels = device->channels();
+ auto channels = sr_dev->channels();
unsigned int logic_channel_count = std::count_if(
channels.begin(), channels.end(),
[] (shared_ptr<Channel> channel) {
// Create data containers for the logic data segments
{
- lock_guard<mutex> data_lock(data_mutex_);
+ lock_guard<recursive_mutex> data_lock(data_mutex_);
if (logic_channel_count == 0) {
logic_data_.reset();
unordered_set< shared_ptr<view::Signal> > prev_sigs(signals_);
signals_.clear();
- for (auto channel : device->channels()) {
+ for (auto channel : sr_dev->channels()) {
shared_ptr<view::Signal> signal;
// Find the channel in the old signals
case SR_CHANNEL_LOGIC:
signal = shared_ptr<view::Signal>(
new view::LogicSignal(*this,
- device, channel,
+ device_, channel,
logic_data_));
+ all_signal_data_.insert(logic_data_);
break;
case SR_CHANNEL_ANALOG:
signal = shared_ptr<view::Signal>(
new view::AnalogSignal(
*this, channel, data));
+ all_signal_data_.insert(data);
break;
}
return shared_ptr<view::Signal>();
}
-void Session::read_sample_rate(shared_ptr<Device> device)
-{
- const auto keys = device_->config_keys(ConfigKey::DEVICE_OPTIONS);
- const auto iter = keys.find(ConfigKey::SAMPLERATE);
- cur_samplerate_ = (iter != keys.end() &&
- (*iter).second.find(sigrok::GET) != (*iter).second.end()) ?
- VariantBase::cast_dynamic<Variant<guint64>>(
- device->config_get(ConfigKey::SAMPLERATE)).get() : 0;
-}
-
-void Session::sample_thread_proc(shared_ptr<Device> device,
- function<void (const QString)> error_handler)
+void Session::sample_thread_proc(function<void (const QString)> error_handler)
{
- assert(device);
assert(error_handler);
- read_sample_rate(device);
+ if (!device_)
+ return;
+
+ cur_samplerate_ = device_->read_config<uint64_t>(ConfigKey::SAMPLERATE);
+
+ out_of_memory_ = false;
try {
- session_->start();
- } catch(Error e) {
+ device_->start();
+ } catch (Error e) {
error_handler(e.what());
return;
}
- set_capture_state(session_->trigger() ?
+ set_capture_state(device_->session()->trigger() ?
AwaitingTrigger : Running);
- session_->run();
+ device_->run();
set_capture_state(Stopped);
// Confirm that SR_DF_END was received
- if (cur_logic_segment_)
- {
+ if (cur_logic_segment_) {
qDebug("SR_DF_END was not received.");
assert(0);
}
+
+ if (out_of_memory_)
+ error_handler(tr("Out of memory, acquisition stopped."));
}
-void Session::feed_in_header(shared_ptr<Device> device)
+void Session::feed_in_header()
{
- read_sample_rate(device);
+ cur_samplerate_ = device_->read_config<uint64_t>(ConfigKey::SAMPLERATE);
}
-void Session::feed_in_meta(shared_ptr<Device> device,
- shared_ptr<Meta> meta)
+void Session::feed_in_meta(shared_ptr<Meta> meta)
{
- (void)device;
-
for (auto entry : meta->config()) {
switch (entry.first->id()) {
case SR_CONF_SAMPLERATE:
+ // We can't rely on the header to always contain the sample rate,
+ // so in case it's supplied via a meta packet, we use it.
+ if (!cur_samplerate_)
+ cur_samplerate_ = g_variant_get_uint64(entry.second.gobj());
+
/// @todo handle samplerate changes
break;
default:
signals_changed();
}
+void Session::feed_in_trigger()
+{
+ // The channel containing most samples should be most accurate
+ uint64_t sample_count = 0;
+
+ {
+ shared_lock<shared_mutex> lock(signals_mutex_);
+ for (const shared_ptr<pv::data::SignalData> d : all_signal_data_) {
+ assert(d);
+ uint64_t temp_count = 0;
+
+ const vector< shared_ptr<pv::data::Segment> > segments =
+ d->segments();
+ for (const shared_ptr<pv::data::Segment> &s : segments)
+ temp_count += s->get_sample_count();
+
+ if (temp_count > sample_count)
+ sample_count = temp_count;
+ }
+ }
+
+ trigger_event(sample_count / get_samplerate());
+}
+
void Session::feed_in_frame_begin()
{
if (cur_logic_segment_ || !cur_analog_segments_.empty())
void Session::feed_in_logic(shared_ptr<Logic> logic)
{
- lock_guard<mutex> lock(data_mutex_);
+ lock_guard<recursive_mutex> lock(data_mutex_);
- if (!logic_data_)
- {
- qDebug() << "Unexpected logic packet";
- return;
+ const size_t sample_count = logic->data_length() / logic->unit_size();
+
+ if (!logic_data_) {
+ // The only reason logic_data_ would not have been created is
+ // if it was not possible to determine the signals when the
+ // device was created.
+ update_signals();
}
- if (!cur_logic_segment_)
- {
+ if (!cur_logic_segment_) {
// This could be the first packet after a trigger
set_capture_state(Running);
- // Get sample limit.
- const auto keys = device_->config_keys(
- ConfigKey::DEVICE_OPTIONS);
- const auto iter = keys.find(ConfigKey::LIMIT_SAMPLES);
- const uint64_t sample_limit = (iter != keys.end() &&
- (*iter).second.find(sigrok::GET) !=
- (*iter).second.end()) ?
- VariantBase::cast_dynamic<Variant<guint64>>(
- device_->config_get(ConfigKey::LIMIT_SAMPLES)).get() : 0;
-
// Create a new data segment
cur_logic_segment_ = shared_ptr<data::LogicSegment>(
new data::LogicSegment(
- logic, cur_samplerate_, sample_limit));
+ logic, cur_samplerate_, sample_count));
logic_data_->push_segment(cur_logic_segment_);
// @todo Putting this here means that only listeners querying
// frame_began is DecoderStack, but in future we need to signal
// this after both analog and logic sweeps have begun.
frame_began();
- }
- else
- {
+ } else {
// Append to the existing data segment
cur_logic_segment_->append_payload(logic);
}
void Session::feed_in_analog(shared_ptr<Analog> analog)
{
- lock_guard<mutex> lock(data_mutex_);
+ lock_guard<recursive_mutex> lock(data_mutex_);
const vector<shared_ptr<Channel>> channels = analog->channels();
const unsigned int channel_count = channels.size();
const size_t sample_count = analog->num_samples() / channel_count;
- const float *data = analog->data_pointer();
+ const float *data = static_cast<const float *>(analog->data_pointer());
bool sweep_beginning = false;
- for (auto channel : channels)
- {
+ if (signals_.empty())
+ update_signals();
+
+ for (auto channel : channels) {
shared_ptr<data::AnalogSegment> segment;
// Try to get the segment of the channel
iterator iter = cur_analog_segments_.find(channel);
if (iter != cur_analog_segments_.end())
segment = (*iter).second;
- else
- {
- // If no segment was found, this means we havn't
+ else {
+ // If no segment was found, this means we haven't
// created one yet. i.e. this is the first packet
// in the sweep containing this segment.
sweep_beginning = true;
- // Get sample limit.
- uint64_t sample_limit;
- try {
- sample_limit = VariantBase::cast_dynamic<Variant<guint64>>(
- device_->config_get(ConfigKey::LIMIT_SAMPLES)).get();
- } catch (Error) {
- sample_limit = 0;
- }
-
// Create a segment, keep it in the maps of channels
segment = shared_ptr<data::AnalogSegment>(
new data::AnalogSegment(
- cur_samplerate_, sample_limit));
+ cur_samplerate_, sample_count));
cur_analog_segments_[channel] = segment;
- // Find the annalog data associated with the channel
+ // Find the analog data associated with the channel
shared_ptr<view::AnalogSignal> sig =
dynamic_pointer_cast<view::AnalogSignal>(
signal_from_channel(channel));
data_received();
}
-void Session::data_feed_in(shared_ptr<Device> device, shared_ptr<Packet> packet)
+void Session::data_feed_in(shared_ptr<sigrok::Device> device,
+ shared_ptr<Packet> packet)
{
+ (void)device;
+
assert(device);
+ assert(device == device_->device());
assert(packet);
switch (packet->type()->id()) {
case SR_DF_HEADER:
- feed_in_header(device);
+ feed_in_header();
break;
case SR_DF_META:
- feed_in_meta(device, dynamic_pointer_cast<Meta>(packet->payload()));
+ feed_in_meta(dynamic_pointer_cast<Meta>(packet->payload()));
+ break;
+
+ case SR_DF_TRIGGER:
+ feed_in_trigger();
break;
case SR_DF_FRAME_BEGIN:
break;
case SR_DF_LOGIC:
- feed_in_logic(dynamic_pointer_cast<Logic>(packet->payload()));
+ try {
+ feed_in_logic(dynamic_pointer_cast<Logic>(packet->payload()));
+ } catch (std::bad_alloc) {
+ out_of_memory_ = true;
+ device_->stop();
+ }
break;
case SR_DF_ANALOG:
- feed_in_analog(dynamic_pointer_cast<Analog>(packet->payload()));
+ try {
+ feed_in_analog(dynamic_pointer_cast<Analog>(packet->payload()));
+ } catch (std::bad_alloc) {
+ out_of_memory_ = true;
+ device_->stop();
+ }
break;
case SR_DF_END:
{
{
- lock_guard<mutex> lock(data_mutex_);
+ lock_guard<recursive_mutex> lock(data_mutex_);
cur_logic_segment_.reset();
cur_analog_segments_.clear();
}
projects / pulseview.git / blobdiff