s_sk.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"
 
void SpuSetKey(int on_off, unsigned int voice_bit)
{
    unsigned int voice_bit_tmp;
 
    voice_bit_tmp = voice_bit & 0xFFFFFF;
    switch ( on_off )
    {
        case SPU_OFF:
            if ( (_spu_env & 1) != 0 )
            {
                _spu_RQ[2] = voice_bit_tmp & 0xFFFF;
                _spu_RQ[3] = (voice_bit_tmp >> 16) & 0xFFFF;
                _spu_RQmask |= 1u;
                _spu_RQvoice &= ~voice_bit_tmp;
                if ( (_spu_RQ[0] & (u16)voice_bit_tmp) != 0 )
                    _spu_RQ[0] &= ~(u16)voice_bit_tmp;
                if ( (_spu_RQ[1] & ((voice_bit_tmp >> 16) & 0xFFFF)) != 0 )
                    _spu_RQ[1] &= ~((voice_bit_tmp >> 16) & 0xFFFF);
            }
            else
            {
                _spu_RXX[512 * _spu_core + 210] = voice_bit_tmp & 0xFFFF;
                _spu_RXX[512 * _spu_core + 211] = (voice_bit_tmp >> 16) & 0xFFFF;
                _spu_keystat[_spu_core] &= ~voice_bit_tmp;
            }
            break;
        case SPU_ON:
            if ( (_spu_env & 1) != 0 )
            {
                _spu_RQ[0] = voice_bit_tmp & 0xFFFF;
                _spu_RQ[1] = (voice_bit_tmp >> 16) & 0xFFFF;
                _spu_RQmask |= 1u;
                _spu_RQvoice |= voice_bit_tmp;
                if ( (_spu_RQ[2] & (u16)voice_bit_tmp) != 0 )
                    _spu_RQ[2] &= ~(u16)voice_bit_tmp;
                if ( (_spu_RQ[3] & ((voice_bit_tmp >> 16) & 0xFFFF)) != 0 )
                    _spu_RQ[3] &= ~((voice_bit_tmp >> 16) & 0xFFFF);
            }
            else
            {
                _spu_RXX[512 * _spu_core + 208] = voice_bit_tmp & 0xFFFF;
                _spu_RXX[512 * _spu_core + 209] = (voice_bit_tmp >> 16) & 0xFFFF;
                _spu_keystat[_spu_core] |= voice_bit_tmp;
            }
            break;
        default:
            break;
    }
}