WaveHeader::WaveHeader( int sampleRate,
int numSamples,
int bytesPerSample,
int bitsPerSample,
int numChannels )
: _headerSize( HEADER_SIZE ),
_sampleRate( sampleRate ),
_numSamples( numSamples ),
_bytesPerSample( bytesPerSample ),
_bitsPerSample( bitsPerSample ),
_numChannels( numChannels )
{
memset( &_header, 0, sizeof(_header) );
// Chunk id is four characters: "RIFF"
SetStr4( CHUNK_ID_IDX, "RIFF" );
// Chunk size is a 32 bit integer that stores size of the entire chunk of wave
// data, i.e., the header plus samples.
SetInt32(CHUNK_SIZE_IDX, CHUNK1_SIZE +
CHUNK_PREFIX_SIZE +
GetAudioDataSizeInBytes() );
// Format contains the letters "WAVE"
SetStr4( FORMAT_IDX, "WAVE" );
// SubchunkID1 contains the letters "fmt ";
SetStr4( SUB_CHUNK1_ID_IDX, "fmt " );
// Subchunk size is a 32 bit integer that stores the number of
// bytes following this number for this sub chunk. (16 for PCM)
SetInt16( SUB_CHUNK1_SIZE_IDX, 16 );
// AudioFormat is PCM - indicated by the value 1
SetInt16( AUDIO_FORMAT_IDX, 1 );
// Set num channels as a 16 bit value;
SetInt16( NUM_CHANNELS_IDX, _numChannels );
// Sample rate
SetInt32( SAMPLE_RATE_IDX, _sampleRate );
// Byte rate
SetInt32( BYTE_RATE_IDX, _sampleRate * _bytesPerSample * _numChannels );
// Block alignment i.e. size of a frame of audio data.
SetInt16( BLOCK_ALIGN_IDX, _numChannels * _bytesPerSample );
// Bits per sample
SetInt16( BITS_PER_SAMPLE, _bitsPerSample );
// SUB_CHUNK2_ID_IDX - The letters "data".
SetStr4( SUB_CHUNK2_ID_IDX, "data" );
// SUB_CHUNK2_ID_SIZE_ID - Size, in bytes, of the audio data.
SetInt32( SUB_CHUNK2_ID_SIZE_IDX, GetAudioDataSizeInBytes() );
}
void CMdbPara::SetNumber(register uint32 nFieldNo, register void* pVal, register uint32 nOperator)
{
switch(GetType(nFieldNo))
{
case MDB_INT8_FIELD:
SetInt8(nFieldNo, *(int8*)pVal, nOperator);
break;
case MDB_INT16_FIELD:
SetInt16(nFieldNo, *(int16*)pVal, nOperator);
break;
case MDB_INT32_FIELD:
SetInt32(nFieldNo, *(int32*)pVal, nOperator);
break;
case MDB_INT64_FIELD:
SetInt64(nFieldNo, *(int64*)pVal, nOperator);
break;
case MDB_UINT8_FIELD:
SetUInt8(nFieldNo, *(uint8*)pVal, nOperator);
break;
case MDB_UINT16_FIELD:
SetUInt16(nFieldNo, *(uint16*)pVal, nOperator);
break;
case MDB_UINT32_FIELD:
SetUInt32(nFieldNo, *(uint32*)pVal, nOperator);
break;
case MDB_UINT64_FIELD:
SetUInt64(nFieldNo, *(uint64*)pVal, nOperator);
break;
case MDB_FLOAT_FIELD:
SetFloat(nFieldNo, *(float*)pVal, nOperator);
break;
case MDB_DOUBLE_FIELD:
SetDouble(nFieldNo, *(double*)pVal, nOperator);
break;
case MDB_DATE_FIELD:
SetDate(nFieldNo, *(CDate*)pVal, nOperator);
break;
case MDB_TIME_FIELD:
SetTime(nFieldNo, *(CTime*)pVal, nOperator);
break;
case MDB_DATETIME_FIELD:
SetDateTime(nFieldNo, *(CDateTime*)pVal, nOperator);
break;
}
}
//============================================================================
// NNumber::SetValue : Set the value.
//----------------------------------------------------------------------------
bool NNumber::SetValue(const NVariant &theValue)
{ uint8_t valueUInt8;
uint16_t valueUInt16;
uint32_t valueUInt32;
uint64_t valueUInt64;
int8_t valueSInt8;
int16_t valueSInt16;
int32_t valueSInt32;
int64_t valueSInt64;
float32_t valueFloat32;
float64_t valueFloat64;
int valueInt;
long valueLong;
NString valueString;
// Set the value
//
// NVariant treats some unsized types as numeric, to support literal constants.
if (theValue.GetValue(*this))
; // Assigned to this
else if (theValue.GetValue(valueUInt8))
SetUInt8(valueUInt8);
else if (theValue.GetValue(valueUInt16))
SetUInt16(valueUInt16);
else if (theValue.GetValue(valueUInt32))
SetUInt32(valueUInt32);
else if (theValue.GetValue(valueUInt64))
SetUInt64(valueUInt64);
else if (theValue.GetValue(valueSInt8))
SetInt8(valueSInt8);
else if (theValue.GetValue(valueSInt16))
SetInt16(valueSInt16);
else if (theValue.GetValue(valueSInt32))
SetInt32(valueSInt32);
else if (theValue.GetValue(valueSInt64))
SetInt64(valueSInt64);
else if (theValue.GetValue(valueFloat32))
SetFloat32(valueFloat32);
else if (theValue.GetValue(valueFloat64))
SetFloat64(valueFloat64);
else if (theValue.GetValue(valueInt))
SetInt64(valueInt);
else if (theValue.GetValue(valueLong))
SetInt64(valueLong);
else if (theValue.GetValue(valueString))
return(SetValue(valueString));
else
return(false);
return(true);
}
