s_svv.c

/*
# _____     ___ ____     ___ ____
#  ____|   |    ____|   |        | |____|
# |     ___|   |____ ___|    ____| |    \    PS2DEV Open Source Project.
#-----------------------------------------------------------------------
# Copyright ps2dev - http://www.ps2dev.org
# Licenced under Academic Free License version 2.0
# Review ps2sdk README & LICENSE files for further details.
*/
 
#include "libspu2_internal.h"
 
static void __attribute__((optimize("no-unroll-loops"))) _spu_wait_SpuSetVoiceVolume(void)
{
    int i;
    int v1;
 
    v1 = 1;
    for ( i = 0; i < 2; i += 1 )
    {
        v1 *= 13;
        __asm__ __volatile__("" : "+g"(v1) : :);
    }
}
 
void SpuSetVoiceVolume(int v_num, s16 voll, s16 volr)
{
    vu16 *regstmp;
 
    regstmp = &_spu_RXX[512 * _spu_core + 8 * v_num];
    regstmp[0] = voll & ~0x8000;
    regstmp[1] = volr & ~0x8000;
    _spu_wait_SpuSetVoiceVolume();
}