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Add function to return list of wav files #8

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46 changes: 41 additions & 5 deletions src/hcr.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -32,31 +32,31 @@
}; */

HCRVocalizer::HCRVocalizer(const uint8_t addr, TwoWire &i2c)
: _i2caddr(addr), _i2c(&i2c), _serialBaud(400000)
: _i2caddr(addr), _i2c(&i2c), _serialBaud(400000), _wavFileList(nullptr), _wavFileListSize(0)
{
connectionType=0x03;
}

HCRVocalizer::HCRVocalizer(const uint8_t addr, TwoWire &i2c, int baud)
: _i2caddr(addr), _i2c(&i2c), _serialBaud(baud)
: _i2caddr(addr), _i2c(&i2c), _serialBaud(baud), _wavFileList(nullptr), _wavFileListSize(0)
{
connectionType=0x03;
}

HCRVocalizer::HCRVocalizer(HardwareSerial *conn,int baud)
: _serial(conn), _serialBaud(baud)
: _serial(conn), _serialBaud(baud), _wavFileList(nullptr), _wavFileListSize(0)
{
connectionType=0x01;
}

HCRVocalizer::HCRVocalizer(SoftwareSerial *conn,int baud)
: _softserial(conn), _serialBaud(baud)
: _softserial(conn), _serialBaud(baud), _wavFileList(nullptr), _wavFileListSize(0)
{
connectionType=0x02;
}

HCRVocalizer::HCRVocalizer(int rx, int tx,int baud)
: _serialBaud(9600)
: _serialBaud(9600), _wavFileList(nullptr), _wavFileListSize(0)
{
#if defined(ARDUINO_ARCH_AVR) || defined(ARDUINO_ARCH_PIC32)
connectionType=0x02;
Expand Down Expand Up @@ -586,4 +586,40 @@ String HCRVocalizer::getValue(String data, char separator, int index)
}

return found>index ? data.substring(strIndex[0], strIndex[1]) : "";
}

String HCRVocalizer::GetWAVFileName(int fileIndex)
{
if (fileIndex < 0 || fileIndex >= GetWAVCount()) {
return "";
}

String fileName = String(fileIndex, DEC);
while (fileName.length() < 4) {
fileName = "0" + fileName;
}
fileName += ".WAV";

return fileName;
}

String* HCRVocalizer::GetWAVFileList(void)
{
int count = GetWAVCount();

// Free existing list if any
if (_wavFileList != nullptr) {
delete[] _wavFileList;
}

// Create new array
_wavFileList = new String[count];
_wavFileListSize = count;

// Populate with filenames
for (int i = 0; i < count; i++) {
_wavFileList[i] = GetWAVFileName(i);
}

return _wavFileList;
}
19 changes: 19 additions & 0 deletions src/hcr.h
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Original file line number Diff line number Diff line change
Expand Up @@ -307,6 +307,23 @@ class HCRVocalizer
float getVolume(int e);
void getUpdate(void);

/**
* @brief Returns the filename of the WAV file at the specified index
* Files are named sequentially (0000.WAV, 0001.WAV, etc.) by default
*
* @param fileIndex the index of the file (0 to GetWAVCount()-1)
* @return String the filename (e.g., "0000.WAV")
*/
String GetWAVFileName(int fileIndex);

/**
* @brief Returns an array of all WAV filenames currently on the SD card
* Caller is responsible for managing the returned array memory
*
* @return String* pointer to an array of filenames
*/
String* GetWAVFileList(void);

void dfPlayer();

private:
Expand Down Expand Up @@ -347,6 +364,8 @@ class HCRVocalizer
int Volume_V;
int Volume_A;
int Volume_B;
String* _wavFileList;
int _wavFileListSize;
};

using namespace std;
Expand Down