fixed.c

unsigned int test_int = 0;

static int audio_interface_callback( const void *inputBuffer, void *outputBuffer,
                           unsigned long framesPerBuffer,
                           const PaStreamCallbackTimeInfo* timeInfo,
                           PaStreamCallbackFlags statusFlags,
                           void *userData )
{
	uint16_t* out = (uint16_t*)outputBuffer;
	uint16_t* data = (uint16_t*)((uintptr_t)userData + test_int * sizeof(uint16_t));
	for(int i = 0; i < framesPerBuffer; i++)
	{
		*out++ = *data++;
		*out++ = *data++;
		test_int += 2;
	}
	return 0;
}