ccadsr.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 "libsnd2_internal.h"
 
void _SsUtResolveADSR(u16 adsr1, u16 adsr2, u16 *adsr_buf)
{
    adsr_buf[5] = adsr1 & 0x8000;
    adsr_buf[6] = adsr2 & 0x8000;
    adsr_buf[8] = adsr2 & 0x4000;
    adsr_buf[7] = adsr2 & 0x20;
    *adsr_buf = (adsr1 >> 8) & 0x7F;
    adsr_buf[1] = (u8)adsr1 >> 4;
    adsr_buf[2] = adsr1 & 0xF;
    adsr_buf[3] = (adsr2 >> 6) & 0x7F;
    adsr_buf[4] = adsr2 & 0x1F;
}
 
void _SsUtBuildADSR(const u16 *adsr_buf, u16 *adsr1, u16 *adsr2)
{
    unsigned int v5;
    s16 v6;
    unsigned int v7;
    u16 v8;
 
    v5 = adsr_buf[6] != 0 ? 0xFFFF8000 : 0;
    v6 = v5;
    v7 = adsr_buf[5] != 0 ? 0xFFFF8000 : 0;
    if ( adsr_buf[8] )
        v6 = v5 | 0x4000;
    if ( adsr_buf[7] )
        v6 |= 0x20u;
    v8 = v6 | ((adsr_buf[3] << 6) & 0x1FC0) | (adsr_buf[4] & 0x1F);
    *adsr1 = v7 | ((*adsr_buf << 8) & 0x7F00) | ((16 * adsr_buf[1]) & 0xF0) | (adsr_buf[2] & 0xF);
    *adsr2 = v8;
}