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virtual void | tick (const StkFloat sample) |
| Output a single sample to all channels in a sample frame. More...
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virtual void | tick (const StkFrames &frames) |
| Output the StkFrames data. More...
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unsigned long | getFrameCount (void) const |
| Return the number of sample frames output.
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StkFloat | getTime (void) const |
| Return the number of seconds of data output.
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bool | clipStatus (void) |
| Returns true if clipping has been detected during output since instantiation or the last reset.
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void | resetClipStatus (void) |
| Reset the clipping status to false .
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void | ignoreSampleRateChange (bool ignore=true) |
| A function to enable/disable the automatic updating of class data when the STK sample rate changes. More...
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static StkFloat | sampleRate (void) |
| Static method that returns the current STK sample rate.
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static void | setSampleRate (StkFloat rate) |
| Static method that sets the STK sample rate. More...
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static void | clear_alertList () |
| Static method that frees memory from alertList_.
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static std::string | rawwavePath (void) |
| Static method that returns the current rawwave path.
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static void | setRawwavePath (std::string path) |
| Static method that sets the STK rawwave path.
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static void | swap16 (unsigned char *ptr) |
| Static method that byte-swaps a 16-bit data type.
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static void | swap32 (unsigned char *ptr) |
| Static method that byte-swaps a 32-bit data type.
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static void | swap64 (unsigned char *ptr) |
| Static method that byte-swaps a 64-bit data type.
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static void | sleep (unsigned long milliseconds) |
| Static cross-platform method to sleep for a number of milliseconds.
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static bool | inRange (StkFloat value, StkFloat min, StkFloat max) |
| Static method to check whether a value is within a specified range.
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static void | handleError (const char *message, StkError::Type type) |
| Static function for error reporting and handling using c-strings.
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static void | handleError (std::string message, StkError::Type type) |
| Static function for error reporting and handling using c++ strings.
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static void | showWarnings (bool status) |
| Toggle display of WARNING and STATUS messages.
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static void | printErrors (bool status) |
| Toggle display of error messages before throwing exceptions.
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Output of sound to the I2S pins of the ESP32.
ESP32 contains two I2S peripherals. These peripherals can be configured to input and output sample data via the I2S driver. The I2S peripheral supports DMA meaning it can stream sample data without requiring each sample to be read or written by the CPU. I2S output can also be routed directly to the Digital/Analog Converter output channels (GPIO 25 & GPIO 26) to produce analog output directly, rather than via an external I2S codec.
by Phil Schatzmann
static void stk::Stk::setSampleRate |
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StkFloat |
rate | ) |
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staticinherited |
Static method that sets the STK sample rate.
The sample rate set using this method is queried by all STK classes that depend on its value. It is initialized to the default SRATE set in Stk.h. Many STK classes use the sample rate during instantiation. Therefore, if you wish to use a rate that is different from the default rate, it is imperative that it be set BEFORE STK objects are instantiated. A few classes that make use of the global STK sample rate are automatically notified when the rate changes so that internal class data can be appropriately updated. However, this has not been fully implemented. Specifically, classes that appropriately update their own data when either a setFrequency() or noteOn() function is called do not currently receive the automatic notification of rate change. If the user wants a specific class instance to ignore such notifications, perhaps in a multi-rate context, the function Stk::ignoreSampleRateChange() should be called.