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#include "routing/turns_sound.hpp"
#include "platform/location.hpp"
namespace
{
// To inform an end user about the next turn with the help of an voice information message
// an operation system needs:
// - to launch TTS subsystem;
// - to pronounce the message.
// So to inform the user in time it's necessary to start
// kStartBeforeSeconds before the time. It is used in the following way:
// we start playing voice notice in kStartBeforeSeconds * TurnsSound::m_speedMetersPerSecond
// meters before the turn (for the second voice notification).
// When kStartBeforeSeconds * TurnsSound::m_speedMetersPerSecond is too small or too large
// we use kMinStartBeforeMeters or kMaxStartBeforeMeters correspondingly.
uint32_t const kStartBeforeSeconds = 5;
uint32_t const kMinStartBeforeMeters = 10;
uint32_t const kMaxStartBeforeMeters = 100;
// kMinDistToSayNotificationMeters is minimum distance between two turns
// when pronouncing the first notification about the second turn makes sense.
uint32_t const kMinDistToSayNotificationMeters = 100;
uint32_t CalculateDistBeforeMeters(double m_speedMetersPerSecond)
{
ASSERT_LESS_OR_EQUAL(0, m_speedMetersPerSecond, ());
uint32_t const startBeforeMeters =
static_cast<uint32_t>(m_speedMetersPerSecond * kStartBeforeSeconds);
return my::clamp(startBeforeMeters, kMinStartBeforeMeters, kMaxStartBeforeMeters);
}
} // namespace
namespace routing
{
namespace turns
{
namespace sound
{
string TurnsSound::GenerateTurnText(uint32_t distanceUnits, uint8_t exitNum, bool useThenInsteadOfDistance,
TurnDirection turnDir, LengthUnits lengthUnits) const
{
Notification const notification(distanceUnits, exitNum, useThenInsteadOfDistance, turnDir, lengthUnits);
return m_getTtsText(notification);
}
void TurnsSound::GenerateTurnSound(TurnItem const & turn, double distanceToTurnMeters,
vector<string> & turnNotifications)
{
turnNotifications.clear();
if (!m_enabled)
return;
if (m_nextTurnIndex != turn.m_index)
{
m_nextTurnNotificationProgress = PronouncedNotification::Nothing;
m_nextTurnIndex = turn.m_index;
}
uint32_t const distanceToPronounceNotificationMeters = CalculateDistBeforeMeters(m_speedMetersPerSecond);
if (m_nextTurnNotificationProgress == PronouncedNotification::Nothing)
{
if (distanceToTurnMeters > kMinDistToSayNotificationMeters)
{
double const currentSpeedUntisPerSecond =
m_settings.ConvertMetersPerSecondToUnitsPerSecond(m_speedMetersPerSecond);
double const turnNotificationDistUnits =
m_settings.ComputeTurnDistance(currentSpeedUntisPerSecond);
uint32_t const startPronounceDistMeters =
m_settings.ConvertUnitsToMeters(turnNotificationDistUnits) + distanceToPronounceNotificationMeters;
if (distanceToTurnMeters < startPronounceDistMeters)
{
// First turn sound notification.
uint32_t const distToPronounce =
m_settings.RoundByPresetSoundedDistancesUnits(turnNotificationDistUnits);
string const text = GenerateTurnText(distToPronounce, turn.m_exitNum, false, turn.m_turn,
m_settings.GetLengthUnits());
if (!text.empty())
turnNotifications.emplace_back(text);
// @TODO(vbykoianko) Check if there's a turn immediately after the current turn.
// If so add an extra item to turnNotifications with "then parameter".
m_nextTurnNotificationProgress = PronouncedNotification::First;
}
}
else
{
// The first notification has not been pronounced but the distance to the turn is too short.
// It happens if one turn follows shortly behind another one.
m_nextTurnNotificationProgress = PronouncedNotification::First;
}
return;
}
if (m_nextTurnNotificationProgress == PronouncedNotification::First &&
distanceToTurnMeters < distanceToPronounceNotificationMeters)
{
string const text = GenerateTurnText(0, turn.m_exitNum, false, turn.m_turn,
m_settings.GetLengthUnits());
if (!text.empty())
turnNotifications.emplace_back(text);
// @TODO(vbykoianko) Check if there's a turn immediately after the current turn.
// If so add an extra item to info.turnNotifications with "then parameter".
m_nextTurnNotificationProgress = PronouncedNotification::Second;
}
}
void TurnsSound::Enable(bool enable)
{
if (enable && !m_enabled)
Reset();
m_enabled = enable;
}
void TurnsSound::SetLengthUnits(LengthUnits units)
{
m_settings.SetLengthUnits(units);
switch(units)
{
case LengthUnits::Undefined:
ASSERT(false, ());
return;
case LengthUnits::Meters:
m_settings = Settings(20 /* notificationTimeSeconds */, 200 /* minNotificationDistanceUnits */,
2000 /* maxNotificationDistanceUnits */,
GetSoundedDistMeters() /* soundedDistancesUnits */,
LengthUnits::Meters /* lengthUnits */);
return;
case LengthUnits::Feet:
m_settings = Settings(20 /* notificationTimeSeconds */, 500 /* minNotificationDistanceUnits */,
5000 /* maxNotificationDistanceUnits */,
GetSoundedDistFeet() /* soundedDistancesUnits */,
LengthUnits::Feet /* lengthUnits */);
return;
}
}
void TurnsSound::SetSpeedMetersPerSecond(double speed)
{
// When the quality of GPS data is bad the current speed may be less then zero.
// It's easy to reproduce at an office with Nexus 5.
// In that case zero meters per second is used.
m_speedMetersPerSecond = max(0., speed);
}
void TurnsSound::Reset()
{
m_nextTurnNotificationProgress = PronouncedNotification::Nothing;
m_nextTurnIndex = 0;
}
string DebugPrint(PronouncedNotification const notificationProgress)
{
switch (notificationProgress)
{
case PronouncedNotification::Nothing:
return "Nothing";
case PronouncedNotification::First:
return "First";
case PronouncedNotification::Second:
return "Second";
}
ASSERT(false, ());
stringstream out;
out << "unknown PronouncedNotification (" << static_cast<int>(notificationProgress) << ")";
return out.str();
}
} // namespace sound
} // namespace turns
} // namespace routing
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