sound in c++

[Pranciskus]

voice.o(.text+0x16e):voice.cpp: undefined reference to `waveInOpen@24'
voice.o(.text+0x1b8):voice.cpp: undefined reference to `waveInPrepareHeader@12'
voice.o(.text+0x1d5):voice.cpp: undefined reference to `waveInAddBuffer@12'

Which lib. should I use? winmm.lib doesnt work. Thanks.

[Moschops]

It does work. You aren't linking against it.

[Pranciskus]

#include <iostream>
#include <Windows.h>
#include <vector>
using namespace std;

#pragma comment(lib, "winmm.lib")

short int waveIn[44100 * 3];

void PlayRecord();

void StartRecord()
{
const int NUMPTS = 44100 * 3; // 3 seconds
int sampleRate = 44100;
// 'short int' is a 16-bit type; I request 16-bit samples below
// for 8-bit capture, you'd use 'unsigned char' or 'BYTE' 8-bit types

HWAVEIN hWaveIn;
MMRESULT result;

WAVEFORMATEX pFormat;
pFormat.wFormatTag=WAVE_FORMAT_PCM; // simple, uncompressed format
pFormat.nChannels=1; // 1=mono, 2=stereo
pFormat.nSamplesPerSec=sampleRate; // 44100
pFormat.nAvgBytesPerSec=sampleRate*2; // = nSamplesPerSec * n.Channels * wBitsPerSample/8
pFormat.nBlockAlign=2; // = n.Channels * wBitsPerSample/8
pFormat.wBitsPerSample=16; // 16 for high quality, 8 for telephone-grade
pFormat.cbSize=0;

// Specify recording parameters

result = waveInOpen(&hWaveIn, WAVE_MAPPER,&pFormat,
0L, 0L, WAVE_FORMAT_DIRECT);

WAVEHDR WaveInHdr;
// Set up and prepare header for input
WaveInHdr.lpData = (LPSTR)waveIn;
WaveInHdr.dwBufferLength = NUMPTS*2;
WaveInHdr.dwBytesRecorded=0;
WaveInHdr.dwUser = 0L;
WaveInHdr.dwFlags = 0L;
WaveInHdr.dwLoops = 0L;
waveInPrepareHeader(hWaveIn, &WaveInHdr, sizeof(WAVEHDR));

// Insert a wave input buffer
result = waveInAddBuffer(hWaveIn, &WaveInHdr, sizeof(WAVEHDR));


// Commence sampling input
result = waveInStart(hWaveIn);


cout << "recording..." << endl;

Sleep(3 * 1000);
// Wait until finished recording

waveInClose(hWaveIn);

PlayRecord();
}

void PlayRecord()
{
const int NUMPTS = 44100 * 3; // 3 seconds
int sampleRate = 44100;
// 'short int' is a 16-bit type; I request 16-bit samples below
// for 8-bit capture, you'd use 'unsigned char' or 'BYTE' 8-bit types

HWAVEIN hWaveIn;

WAVEFORMATEX pFormat;
pFormat.wFormatTag=WAVE_FORMAT_PCM; // simple, uncompressed format
pFormat.nChannels=1; // 1=mono, 2=stereo
pFormat.nSamplesPerSec=sampleRate; // 44100
pFormat.nAvgBytesPerSec=sampleRate*2; // = nSamplesPerSec * n.Channels * wBitsPerSample/8
pFormat.nBlockAlign=2; // = n.Channels * wBitsPerSample/8
pFormat.wBitsPerSample=16; // 16 for high quality, 8 for telephone-grade
pFormat.cbSize=0;

// Specify recording parameters

waveInOpen(&hWaveIn, WAVE_MAPPER,&pFormat, 0L, 0L, WAVE_FORMAT_DIRECT);

WAVEHDR WaveInHdr;
// Set up and prepare header for input
WaveInHdr.lpData = (LPSTR)waveIn;
WaveInHdr.dwBufferLength = NUMPTS*2;
WaveInHdr.dwBytesRecorded=0;
WaveInHdr.dwUser = 0L;
WaveInHdr.dwFlags = 0L;
WaveInHdr.dwLoops = 0L;
waveInPrepareHeader(hWaveIn, &WaveInHdr, sizeof(WAVEHDR));

HWAVEOUT hWaveOut;
cout << "playing..." << endl;
waveOutOpen(&hWaveOut, WAVE_MAPPER, &pFormat, 0, 0, WAVE_FORMAT_DIRECT);
waveOutWrite(hWaveOut, &WaveInHdr, sizeof(WaveInHdr)); // Playing the data
Sleep(3 * 1000); //Sleep for as long as there was recorded

waveInClose(hWaveIn);
waveOutClose(hWaveOut);
}

int main()
{
StartRecord();
return 0;
}

voice.o(.text+0x16e):voice.cpp: undefined reference to `waveInOpen@24'
voice.o(.text+0x1b8):voice.cpp: undefined reference to `waveInPrepareHeader@12'
voice.o(.text+0x1d5):voice.cpp: undefined reference to `waveInAddBuffer@12'
voice.o(.text+0x1e6):voice.cpp: undefined reference to `waveInStart@4'
voice.o(.text+0x22a):voice.cpp: undefined reference to `waveInClose@4'
voice.o(.text+0x2a9):voice.cpp: undefined reference to `waveInOpen@24'
voice.o(.text+0x2f0):voice.cpp: undefined reference to `waveInPrepareHeader@12'
voice.o(.text+0x349):voice.cpp: undefined reference to `waveOutOpen@24'
voice.o(.text+0x366):voice.cpp: undefined reference to `waveOutWrite@12'
voice.o(.text+0x383):voice.cpp: undefined reference to `waveInClose@4'
voice.o(.text+0x391):voice.cpp: undefined reference to `waveOutClose@4'

Here is the full code. I'm using Dev-c++, and I linked it by creating new project deleted main.cpp, then gone to project options>parameters and added to library WINMM.lib which is size of 42,9 KB (43.982) bytes. Then created new file and pasted the code. If something's wrong in the code please paste me correct variant because I'm new at this. Before I had similar problem but solved by added libws2_32.a in the same way.

[Moschops]

If you're going to link like that, you're going to have to use Visual Studio.

[Chervil]

If using g++, get rid of that #pragma - there should be a compiler warning in any case:

[Warning] ignoring #pragma comment  [-Wunknown-pragmas]

compile with at least these options as a matter of routine:
-std=c++11 -Wall -Wextra -pedantic-errors

To resolve the linker error, add the linker option
-lwinmm