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From: sounak d. <dey...@gm...> - 2012-02-09 07:29:11
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pls help me resolve the linker error while working with OpenAl 1.1 in dev
c++
here is the code::::::::::::::::::::::::
#include <iostream>
#include <stdio.h>
#include <windows.h>
#include "Al/al.h"
#include "Al/alc.h"
//#include <al.h>
//#include <alc.h>
using namespace std;
using namespace std;
int main()
{
ALCdevice *dev[2];
ALCcontext *ctx;
ALuint source, buffers[3];
char data[5000];
ALuint buf;
ALint val;
dev[0] = alcOpenDevice(NULL);
ctx = alcCreateContext(dev[0], NULL);
alcMakeContextCurrent(ctx);
alGenSources(1, &source);
alGenBuffers(3, buffers);
/* Setup some initial silent data to play out of the source */
alBufferData(buffers[0], AL_FORMAT_MONO16, data, sizeof(data), 22050);
alBufferData(buffers[1], AL_FORMAT_MONO16, data, sizeof(data), 22050);
alBufferData(buffers[2], AL_FORMAT_MONO16, data, sizeof(data), 22050);
alSourceQueueBuffers(source, 3, buffers);
/* If you don't need 3D spatialization, this should help processing
time */
alDistanceModel(AL_NONE);
dev[1] = alcCaptureOpenDevice(NULL, 22050, AL_FORMAT_MONO16,
sizeof(data)/2);
/* Start playback and capture, and enter the audio loop */
alSourcePlay(source);
alcCaptureStart(dev[1]);
while(1)
{
/* Check if any queued buffers are finished */
alGetSourcei(source, AL_BUFFERS_PROCESSED, &val);
if(val <= 0)
continue;
/* Check how much audio data has been captured (note that 'val' is
the
* number of frames, not bytes) */
alcGetIntegerv(dev[1], ALC_CAPTURE_SAMPLES, 1, &val);
/* Read the captured audio */
alcCaptureSamples(dev[1], data, val);
/* Pop the oldest finished buffer, fill it with the new capture
data,
then re-queue it to play on the source */
alSourceUnqueueBuffers(source, 1, &buf);
alBufferData(buf, AL_FORMAT_MONO16, data, val*2 /* bytes here, not
frames */, 22050);
alSourceQueueBuffers(source, 1, &buf);
/* Make sure the source is still playing */
alGetSourcei(source, AL_SOURCE_STATE, &val);
if(val != AL_PLAYING)
{
alSourcePlay(source);
}
}
/* Shutdown and cleanup */
alcCaptureStop(dev[1]);
alcCaptureCloseDevice(dev[1]);
alSourceStop(source);
alDeleteSources(1, &source);
alDeleteBuffers(3, buffers);
alcMakeContextCurrent(NULL);
alcDestroyContext(ctx);
alcCloseDevice(dev[0]);
return 0;
}
errors are such as:::::::::::::::::::::::
[Linker error] undefined reference to `_imp__alcOpenDevice'
[Linker error] undefined reference to `_imp__alcCreateContext'
[Linker error] undefined reference to `_imp__alcMakeContextCurrent'
and many others all are linker error::
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