@@ -160,7 +160,6 @@ Agc::Agc(Controller *controller)
status_.total_exposure_value = 0.0;
status_.target_exposure_value = 0.0;
status_.locked = false;
- output_status_ = status_;
}
char const *Agc::Name() const
@@ -185,43 +184,36 @@ void Agc::Read(boost::property_tree::ptree const ¶ms)
void Agc::SetEv(double ev)
{
- std::unique_lock<std::mutex> lock(settings_mutex_);
ev_ = ev;
}
void Agc::SetFlickerPeriod(double flicker_period)
{
- std::unique_lock<std::mutex> lock(settings_mutex_);
flicker_period_ = flicker_period;
}
void Agc::SetFixedShutter(double fixed_shutter)
{
- std::unique_lock<std::mutex> lock(settings_mutex_);
fixed_shutter_ = fixed_shutter;
}
void Agc::SetFixedAnalogueGain(double fixed_analogue_gain)
{
- std::unique_lock<std::mutex> lock(settings_mutex_);
fixed_analogue_gain_ = fixed_analogue_gain;
}
void Agc::SetMeteringMode(std::string const &metering_mode_name)
{
- std::unique_lock<std::mutex> lock(settings_mutex_);
metering_mode_name_ = metering_mode_name;
}
void Agc::SetExposureMode(std::string const &exposure_mode_name)
{
- std::unique_lock<std::mutex> lock(settings_mutex_);
exposure_mode_name_ = exposure_mode_name;
}
void Agc::SetConstraintMode(std::string const &constraint_mode_name)
{
- std::unique_lock<std::mutex> lock(settings_mutex_);
constraint_mode_name_ = constraint_mode_name;
}
@@ -240,14 +232,9 @@ void Agc::SwitchMode([[maybe_unused]] CameraMode const &camera_mode,
void Agc::Prepare(Metadata *image_metadata)
{
- AgcStatus status;
- {
- std::unique_lock<std::mutex> lock(output_mutex_);
- status = output_status_;
- }
int lock_count = lock_count_;
lock_count_ = 0;
- status.digital_gain = 1.0;
+ status_.digital_gain = 1.0;
if (status_.total_exposure_value) {
// Process has run, so we have meaningful values.
DeviceStatus device_status;
@@ -255,48 +242,45 @@ void Agc::Prepare(Metadata *image_metadata)
double actual_exposure = device_status.shutter_speed *
device_status.analogue_gain;
if (actual_exposure) {
- status.digital_gain =
+ status_.digital_gain =
status_.total_exposure_value /
actual_exposure;
LOG(RPiAgc, Debug) << "Want total exposure " << status_.total_exposure_value;
// Never ask for a gain < 1.0, and also impose
// some upper limit. Make it customisable?
- status.digital_gain = std::max(
+ status_.digital_gain = std::max(
1.0,
- std::min(status.digital_gain, 4.0));
+ std::min(status_.digital_gain, 4.0));
LOG(RPiAgc, Debug) << "Actual exposure " << actual_exposure;
- LOG(RPiAgc, Debug) << "Use digital_gain " << status.digital_gain;
- LOG(RPiAgc, Debug) << "Effective exposure " << actual_exposure * status.digital_gain;
+ LOG(RPiAgc, Debug) << "Use digital_gain " << status_.digital_gain;
+ LOG(RPiAgc, Debug) << "Effective exposure " << actual_exposure * status_.digital_gain;
// Decide whether AEC/AGC has converged.
// Insist AGC is steady for MAX_LOCK_COUNT
// frames before we say we are "locked".
// (The hard-coded constants may need to
// become customisable.)
- if (status.target_exposure_value) {
+ if (status_.target_exposure_value) {
#define MAX_LOCK_COUNT 3
- double err = 0.10 * status.target_exposure_value + 200;
+ double err = 0.10 * status_.target_exposure_value + 200;
if (actual_exposure <
- status.target_exposure_value + err
- && actual_exposure >
- status.target_exposure_value - err)
+ status_.target_exposure_value + err &&
+ actual_exposure >
+ status_.target_exposure_value - err)
lock_count_ =
std::min(lock_count + 1,
- MAX_LOCK_COUNT);
+ MAX_LOCK_COUNT);
else if (actual_exposure <
- status.target_exposure_value
- + 1.5 * err &&
+ status_.target_exposure_value + 1.5 * err &&
actual_exposure >
- status.target_exposure_value
- - 1.5 * err)
+ status_.target_exposure_value - 1.5 * err)
lock_count_ = lock_count;
LOG(RPiAgc, Debug) << "Lock count: " << lock_count_;
}
}
} else
LOG(RPiAgc, Debug) << Name() << ": no device metadata";
- status.locked = lock_count_ >= MAX_LOCK_COUNT;
- //printf("%s\n", status.locked ? "+++++++++" : "-");
- image_metadata->Set("agc.status", status);
+ status_.locked = lock_count_ >= MAX_LOCK_COUNT;
+ image_metadata->Set("agc.status", status_);
}
}
@@ -335,55 +319,47 @@ static void copy_string(std::string const &s, char *d, size_t size)
void Agc::housekeepConfig()
{
// First fetch all the up-to-date settings, so no one else has to do it.
- std::string new_exposure_mode_name, new_constraint_mode_name,
- new_metering_mode_name;
- {
- std::unique_lock<std::mutex> lock(settings_mutex_);
- new_metering_mode_name = metering_mode_name_;
- new_exposure_mode_name = exposure_mode_name_;
- new_constraint_mode_name = constraint_mode_name_;
- status_.ev = ev_;
- status_.fixed_shutter = fixed_shutter_;
- status_.fixed_analogue_gain = fixed_analogue_gain_;
- status_.flicker_period = flicker_period_;
- }
+ status_.ev = ev_;
+ status_.fixed_shutter = fixed_shutter_;
+ status_.fixed_analogue_gain = fixed_analogue_gain_;
+ status_.flicker_period = flicker_period_;
LOG(RPiAgc, Debug) << "ev " << status_.ev << " fixed_shutter "
<< status_.fixed_shutter << " fixed_analogue_gain "
<< status_.fixed_analogue_gain;
// Make sure the "mode" pointers point to the up-to-date things, if
// they've changed.
- if (strcmp(new_metering_mode_name.c_str(), status_.metering_mode)) {
- auto it = config_.metering_modes.find(new_metering_mode_name);
+ if (strcmp(metering_mode_name_.c_str(), status_.metering_mode)) {
+ auto it = config_.metering_modes.find(metering_mode_name_);
if (it == config_.metering_modes.end())
throw std::runtime_error("Agc: no metering mode " +
- new_metering_mode_name);
+ metering_mode_name_);
metering_mode_ = &it->second;
- copy_string(new_metering_mode_name, status_.metering_mode,
+ copy_string(metering_mode_name_, status_.metering_mode,
sizeof(status_.metering_mode));
}
- if (strcmp(new_exposure_mode_name.c_str(), status_.exposure_mode)) {
- auto it = config_.exposure_modes.find(new_exposure_mode_name);
+ if (strcmp(exposure_mode_name_.c_str(), status_.exposure_mode)) {
+ auto it = config_.exposure_modes.find(exposure_mode_name_);
if (it == config_.exposure_modes.end())
throw std::runtime_error("Agc: no exposure profile " +
- new_exposure_mode_name);
+ exposure_mode_name_);
exposure_mode_ = &it->second;
- copy_string(new_exposure_mode_name, status_.exposure_mode,
+ copy_string(exposure_mode_name_, status_.exposure_mode,
sizeof(status_.exposure_mode));
}
- if (strcmp(new_constraint_mode_name.c_str(), status_.constraint_mode)) {
+ if (strcmp(constraint_mode_name_.c_str(), status_.constraint_mode)) {
auto it =
- config_.constraint_modes.find(new_constraint_mode_name);
+ config_.constraint_modes.find(constraint_mode_name_);
if (it == config_.constraint_modes.end())
throw std::runtime_error("Agc: no constraint list " +
- new_constraint_mode_name);
+ constraint_mode_name_);
constraint_mode_ = &it->second;
- copy_string(new_constraint_mode_name, status_.constraint_mode,
+ copy_string(constraint_mode_name_, status_.constraint_mode,
sizeof(status_.constraint_mode));
}
LOG(RPiAgc, Debug) << "exposure_mode "
- << new_exposure_mode_name << " constraint_mode "
- << new_constraint_mode_name << " metering_mode "
- << new_metering_mode_name;
+ << exposure_mode_name_ << " constraint_mode "
+ << constraint_mode_name_ << " metering_mode "
+ << metering_mode_name_;
}
void Agc::fetchCurrentExposure(Metadata *image_metadata)
@@ -638,10 +614,6 @@ void Agc::writeAndFinish(Metadata *image_metadata, bool desaturate)
status_.target_exposure_value = desaturate ? 0 : target_.total_exposure_no_dg;
status_.shutter_time = filtered_.shutter;
status_.analogue_gain = filtered_.analogue_gain;
- {
- std::unique_lock<std::mutex> lock(output_mutex_);
- output_status_ = status_;
- }
// Write to metadata as well, in case anyone wants to update the camera
// immediately.
image_metadata->Set("agc.status", status_);
@@ -106,12 +106,9 @@ private:
ExposureValues current_; // values for the current frame
ExposureValues target_; // calculate the values we want here
ExposureValues filtered_; // these values are filtered towards target
- AgcStatus status_; // to "latch" settings so they can't change
- AgcStatus output_status_; // the status we will write out
- std::mutex output_mutex_;
+ AgcStatus status_;
int lock_count_;
// Below here the "settings" that applications can change.
- std::mutex settings_mutex_;
std::string metering_mode_name_;
std::string exposure_mode_name_;
std::string constraint_mode_name_;