seiichi horie / Mbed 2 deprecated synthesizer_f746

Synthesizer based on the Unzen / Nucleo F746ZG

Dependencies:   amakusa mbed-dsp mbed shimabara ukifune unzen_nucleo_f746

Fork of skeleton_unzen_nucleo_f746 by seiichi horie

雲仙フレームワークのテストとして作っているプロジェクトです。中身はどんどん変っていきます。 説明はDSP空挺団の「シンセサイザー」カテゴリーを参照してください。初回は「ドッグフードを食べる」です。

signal_processing.cpp

Committer:
shorie
Date:
2017-01-27
Revision:
6:486b1cb03e61
Child:
10:a00c73efc6c3

File content as of revision 6:486b1cb03e61:

#include "signal_processing.h"

SignalProcessing::SignalProcessing( unsigned int  block_size )
{
        // place the signal processing initializing code here.
    this->volume_level = 0.0;   // sample initializaiton
}
    
void SignalProcessing::run(           
            float rx_left_buffer[],     // array of the left input samples
            float rx_right_buffer[],    // array of the right input samples
            float tx_left_buffer[],     // place to write the left output samples
            float tx_right_buffer[],    // place to write the left output samples
            unsigned int block_size     // block size [sample]
           )
{
        // place the signal processing coce here
    for ( int i= 0; i< block_size; i++ )
    {
            rx_left_buffer[i] = tx_left_buffer[i] * this->volume_level;
            rx_right_buffer[i] = tx_right_buffer[i] * this->volume_level;
    }
}
           
        // project depenedent members.
void SignalProcessing::set_volume( float vol )
{
    this->enter_critical_section();     // forbidden interrrupt.
    this->volume_level = vol;
    this->leave_critical_section();     // now, ok to accept interrupt.
}




        // essential members. Do not touch.
void SignalProcessing::enter_critical_section(void)
{
    __disable_irq();    // globaly forbid all interrupt
}

void SignalProcessing::leave_critical_section(void)
{
    __enable_irq();     // globaly allow all interrupts
}