// Project64 - A Nintendo 64 emulator
// https://www.pj64-emu.com/
// Copyright(C) 2001-2021 Project64
// Copyright(C) 2014 Bobby Smiles
// Copyright(C) 2009 Richard Goedeken
// Copyright(C) 2002 Hacktarux
// GNU/GPLv2 licensed: https://gnu.org/licenses/gpl-2.0.html

#include "stdafx.h"

#include "alist.h"
#include "mem.h"

// Audio commands definition

static void UNKNOWN(CHle * hle, uint32_t w1, uint32_t w2)
{
    uint8_t acmd = (w1 >> 24);
    hle->WarnMessage("Unknown audio command %d: %08x %08x", acmd, w1, w2);
}

static void SPNOOP(CHle * UNUSED(hle), uint32_t UNUSED(w1), uint32_t UNUSED(w2))
{
}

static void LOADADPCM(CHle * hle, uint32_t w1, uint32_t w2)
{
    uint16_t count   = w1;
    uint32_t address = (w2 & 0xffffff);

    dram_load_u16(hle, (uint16_t*)hle->alist_nead().table, address, count >> 1);
}

static void SETLOOP(CHle * hle, uint32_t UNUSED(w1), uint32_t w2)
{
    hle->alist_nead().loop = w2 & 0xffffff;
}

static void SETBUFF(CHle * hle, uint32_t w1, uint32_t w2)
{
    hle->alist_nead().in    = w1;
    hle->alist_nead().out   = (w2 >> 16);
    hle->alist_nead().count = w2;
}

static void ADPCM(CHle * hle, uint32_t w1, uint32_t w2)
{
    uint8_t  flags   = (w1 >> 16);
    uint32_t address = (w2 & 0xffffff);

    alist_adpcm(
        hle,
        flags & 0x1,
        flags & 0x2,
        flags & 0x4,
        hle->alist_nead().out,
        hle->alist_nead().in,
        (hle->alist_nead().count + 0x1f) & ~0x1f,
        hle->alist_nead().table,
        hle->alist_nead().loop,
        address);
}

static void CLEARBUFF(CHle * hle, uint32_t w1, uint32_t w2)
{
    uint16_t dmem  = w1;
    uint16_t count = w2;

    if (count == 0)
        return;

    alist_clear(hle, dmem, count);
}

static void LOADBUFF(CHle * hle, uint32_t w1, uint32_t w2)
{
    uint16_t count   = (w1 >> 12) & 0xfff;
    uint16_t dmem    = (w1 & 0xfff);
    uint32_t address = (w2 & 0xffffff);

    alist_load(hle, dmem, address, count);
}

static void SAVEBUFF(CHle * hle, uint32_t w1, uint32_t w2)
{
    uint16_t count   = (w1 >> 12) & 0xfff;
    uint16_t dmem    = (w1 & 0xfff);
    uint32_t address = (w2 & 0xffffff);

    alist_save(hle, dmem, address, count);
}

static void MIXER(CHle * hle, uint32_t w1, uint32_t w2)
{
    uint16_t count = (w1 >> 12) & 0xff0;
    int16_t  gain  = w1;
    uint16_t dmemi = (w2 >> 16);
    uint16_t dmemo = w2;

    alist_mix(hle, dmemo, dmemi, count, gain);
}

static void RESAMPLE(CHle * hle, uint32_t w1, uint32_t w2)
{
    uint8_t  flags   = (w1 >> 16);
    uint16_t pitch   = w1;
    uint32_t address = (w2 & 0xffffff);

    alist_resample(
        hle,
        flags & 0x1,
        false,          // TODO: check which ABI supports it
        hle->alist_nead().out,
        hle->alist_nead().in,
        (hle->alist_nead().count + 0xf) & ~0xf,
        pitch << 1,
        address);
}

static void RESAMPLE_ZOH(CHle * hle, uint32_t w1, uint32_t w2)
{
    uint16_t pitch      = w1;
    uint16_t pitch_accu = w2;

    alist_resample_zoh(
        hle,
        hle->alist_nead().out,
        hle->alist_nead().in,
        hle->alist_nead().count,
        pitch << 1,
        pitch_accu);
}

static void DMEMMOVE(CHle * hle, uint32_t w1, uint32_t w2)
{
    uint16_t dmemi = w1;
    uint16_t dmemo = (w2 >> 16);
    uint16_t count = w2;

    if (count == 0)
        return;

    alist_move(hle, dmemo, dmemi, (count + 3) & ~3);
}

static void ENVSETUP1_MK(CHle * hle, uint32_t w1, uint32_t w2)
{
    hle->alist_nead().env_values[2] = (w1 >> 8) & 0xff00;
    hle->alist_nead().env_steps[2]  = 0;
    hle->alist_nead().env_steps[0]  = (w2 >> 16);
    hle->alist_nead().env_steps[1]  = w2;
}

static void ENVSETUP1(CHle * hle, uint32_t w1, uint32_t w2)
{
    hle->alist_nead().env_values[2] = (w1 >> 8) & 0xff00;
    hle->alist_nead().env_steps[2]  = w1;
    hle->alist_nead().env_steps[0]  = (w2 >> 16);
    hle->alist_nead().env_steps[1]  = w2;
}

static void ENVSETUP2(CHle * hle, uint32_t UNUSED(w1), uint32_t w2)
{
    hle->alist_nead().env_values[0] = (w2 >> 16);
    hle->alist_nead().env_values[1] = w2;
}

static void ENVMIXER_MK(CHle * hle, uint32_t w1, uint32_t w2)
{
    int16_t xors[4];

    uint16_t dmemi = (w1 >> 12) & 0xff0;
    uint8_t  count = (w1 >>  8) & 0xff;
    uint16_t dmem_dl = (w2 >> 20) & 0xff0;
    uint16_t dmem_dr = (w2 >> 12) & 0xff0;
    uint16_t dmem_wl = (w2 >>  4) & 0xff0;
    uint16_t dmem_wr = (w2 <<  4) & 0xff0;

    xors[2] = 0;    // Unsupported by this microcode
    xors[3] = 0;    // Unsupported by this microcode
    xors[0] = 0 - (int16_t)((w1 & 0x2) >> 1);
    xors[1] = 0 - (int16_t)((w1 & 0x1)     );

    alist_envmix_nead(
        hle,
        false,  // Unsupported by this microcode
        dmem_dl, dmem_dr,
        dmem_wl, dmem_wr,
        dmemi, count,
        hle->alist_nead().env_values,
        hle->alist_nead().env_steps,
        xors);
}

static void ENVMIXER(CHle * hle, uint32_t w1, uint32_t w2)
{
    int16_t xors[4];

    uint16_t dmemi = (w1 >> 12) & 0xff0;
    uint8_t  count = (w1 >>  8) & 0xff;
    bool     swap_wet_LR = (w1 >> 4) & 0x1;
    uint16_t dmem_dl = (w2 >> 20) & 0xff0;
    uint16_t dmem_dr = (w2 >> 12) & 0xff0;
    uint16_t dmem_wl = (w2 >>  4) & 0xff0;
    uint16_t dmem_wr = (w2 <<  4) & 0xff0;

    xors[2] = 0 - (int16_t)((w1 & 0x8) >> 1);
    xors[3] = 0 - (int16_t)((w1 & 0x4) >> 1);
    xors[0] = 0 - (int16_t)((w1 & 0x2) >> 1);
    xors[1] = 0 - (int16_t)((w1 & 0x1)     );

    alist_envmix_nead(
        hle,
        swap_wet_LR,
        dmem_dl, dmem_dr,
        dmem_wl, dmem_wr,
        dmemi, count,
        hle->alist_nead().env_values,
        hle->alist_nead().env_steps,
        xors);
}

static void DUPLICATE(CHle * hle, uint32_t w1, uint32_t w2)
{
    uint8_t  count = (w1 >> 16);
    uint16_t dmemi = w1;
    uint16_t dmemo = (w2 >> 16);

    alist_repeat64(hle, dmemo, dmemi, count);
}

static void INTERL(CHle * hle, uint32_t w1, uint32_t w2)
{
    uint16_t count = w1;
    uint16_t dmemi = (w2 >> 16);
    uint16_t dmemo = w2;

    alist_copy_every_other_sample(hle, dmemo, dmemi, count);
}

static void INTERLEAVE_MK(CHle * hle, uint32_t UNUSED(w1), uint32_t w2)
{
    uint16_t left = (w2 >> 16);
    uint16_t right = w2;

    if (hle->alist_nead().count == 0)
        return;

    alist_interleave(hle, hle->alist_nead().out, left, right, hle->alist_nead().count);
}

static void INTERLEAVE(CHle * hle, uint32_t w1, uint32_t w2)
{
    uint16_t count = ((w1 >> 12) & 0xff0);
    uint16_t dmemo = w1;
    uint16_t left = (w2 >> 16);
    uint16_t right = w2;

    alist_interleave(hle, dmemo, left, right, count);
}

static void ADDMIXER(CHle * hle, uint32_t w1, uint32_t w2)
{
    uint16_t count = (w1 >> 12) & 0xff0;
    uint16_t dmemi = (w2 >> 16);
    uint16_t dmemo = w2;

    alist_add(hle, dmemo, dmemi, count);
}

static void HILOGAIN(CHle * hle, uint32_t w1, uint32_t w2)
{
    int8_t   gain  = (w1 >> 16); // Q4.4 signed
    uint16_t count = w1;
    uint16_t dmem  = (w2 >> 16);

    alist_multQ44(hle, dmem, count, gain);
}

static void FILTER(CHle * hle, uint32_t w1, uint32_t w2)
{
    uint8_t  flags   = (w1 >> 16);
    uint32_t address = (w2 & 0xffffff);

    if (flags > 1) {
        hle->alist_nead().filter_count          = w1;
        hle->alist_nead().filter_lut_address[0] = address; // T6
    }
    else {
        uint16_t dmem = w1;

        hle->alist_nead().filter_lut_address[1] = address + 0x10; // T5
        alist_filter(hle, dmem, hle->alist_nead().filter_count, address, hle->alist_nead().filter_lut_address);
    }
}

static void SEGMENT(CHle * UNUSED(hle), uint32_t UNUSED(w1), uint32_t UNUSED(w2))
{
}

static void NEAD_16(CHle * hle, uint32_t w1, uint32_t w2)
{
    uint8_t  count      = (w1 >> 16);
    uint16_t dmemi      = w1;
    uint16_t dmemo      = (w2 >> 16);
    uint16_t block_size = w2;

    alist_copy_blocks(hle, dmemo, dmemi, block_size, count);
}

static void POLEF(CHle * hle, uint32_t w1, uint32_t w2)
{
    uint8_t  flags   = (w1 >> 16);
    uint16_t gain    = w1;
    uint32_t address = (w2 & 0xffffff);

    if (hle->alist_nead().count == 0)
        return;

    alist_polef(
        hle,
        flags & A_INIT,
        hle->alist_nead().out,
        hle->alist_nead().in,
        hle->alist_nead().count,
        gain,
        hle->alist_nead().table,
        address);
}

void alist_process_nead_mk(CHle * hle)
{
    static const acmd_callback_t ABI[0x20] = {
        SPNOOP,         ADPCM,          CLEARBUFF,      SPNOOP,
        SPNOOP,         RESAMPLE,       SPNOOP,         SEGMENT,
        SETBUFF,        SPNOOP,         DMEMMOVE,       LOADADPCM,
        MIXER,          INTERLEAVE_MK,  POLEF,          SETLOOP,
        NEAD_16,        INTERL,         ENVSETUP1_MK,   ENVMIXER_MK,
        LOADBUFF,       SAVEBUFF,       ENVSETUP2,      SPNOOP,
        SPNOOP,         SPNOOP,         SPNOOP,         SPNOOP,
        SPNOOP,         SPNOOP,         SPNOOP,         SPNOOP
    };

    alist_process(hle, ABI, 0x20);
}

void alist_process_nead_sf(CHle * hle)
{
    static const acmd_callback_t ABI[0x20] = {
        SPNOOP,         ADPCM,          CLEARBUFF,      SPNOOP,
        ADDMIXER,       RESAMPLE,       RESAMPLE_ZOH,   SPNOOP,
        SETBUFF,        SPNOOP,         DMEMMOVE,       LOADADPCM,
        MIXER,          INTERLEAVE_MK,  POLEF,          SETLOOP,
        NEAD_16,        INTERL,         ENVSETUP1,      ENVMIXER,
        LOADBUFF,       SAVEBUFF,       ENVSETUP2,      SPNOOP,
        HILOGAIN,       UNKNOWN,        DUPLICATE,      SPNOOP,
        SPNOOP,         SPNOOP,         SPNOOP,         SPNOOP
    };

    alist_process(hle, ABI, 0x20);
}

void alist_process_nead_sfj(CHle * hle)
{
    static const acmd_callback_t ABI[0x20] = {
        SPNOOP,         ADPCM,          CLEARBUFF,      SPNOOP,
        ADDMIXER,       RESAMPLE,       RESAMPLE_ZOH,   SPNOOP,
        SETBUFF,        SPNOOP,         DMEMMOVE,       LOADADPCM,
        MIXER,          INTERLEAVE_MK,  POLEF,          SETLOOP,
        NEAD_16,        INTERL,         ENVSETUP1,      ENVMIXER,
        LOADBUFF,       SAVEBUFF,       ENVSETUP2,      UNKNOWN,
        HILOGAIN,       UNKNOWN,        DUPLICATE,      SPNOOP,
        SPNOOP,         SPNOOP,         SPNOOP,         SPNOOP
    };

    alist_process(hle, ABI, 0x20);
}

void alist_process_nead_fz(CHle * hle)
{
    static const acmd_callback_t ABI[0x20] = {
        UNKNOWN,        ADPCM,          CLEARBUFF,      SPNOOP,
        ADDMIXER,       RESAMPLE,       SPNOOP,         SPNOOP,
        SETBUFF,        SPNOOP,         DMEMMOVE,       LOADADPCM,
        MIXER,          INTERLEAVE,     SPNOOP,         SETLOOP,
        NEAD_16,        INTERL,         ENVSETUP1,      ENVMIXER,
        LOADBUFF,       SAVEBUFF,       ENVSETUP2,      UNKNOWN,
        SPNOOP,         UNKNOWN,        DUPLICATE,      SPNOOP,
        SPNOOP,         SPNOOP,         SPNOOP,         SPNOOP
    };

    alist_process(hle, ABI, 0x20);
}

void alist_process_nead_wrjb(CHle * hle)
{
    static const acmd_callback_t ABI[0x20] = {
        SPNOOP,         ADPCM,          CLEARBUFF,      UNKNOWN,
        ADDMIXER,       RESAMPLE,       RESAMPLE_ZOH,   SPNOOP,
        SETBUFF,        SPNOOP,         DMEMMOVE,       LOADADPCM,
        MIXER,          INTERLEAVE,     SPNOOP,         SETLOOP,
        NEAD_16,        INTERL,         ENVSETUP1,      ENVMIXER,
        LOADBUFF,       SAVEBUFF,       ENVSETUP2,      UNKNOWN,
        HILOGAIN,       UNKNOWN,        DUPLICATE,      FILTER,
        SPNOOP,         SPNOOP,         SPNOOP,         SPNOOP
    };

    alist_process(hle, ABI, 0x20);
}

void alist_process_nead_ys(CHle * hle)
{
    static const acmd_callback_t ABI[0x18] = {
        UNKNOWN,        ADPCM,          CLEARBUFF,      UNKNOWN,
        ADDMIXER,       RESAMPLE,       RESAMPLE_ZOH,   FILTER,
        SETBUFF,        DUPLICATE,      DMEMMOVE,       LOADADPCM,
        MIXER,          INTERLEAVE,     HILOGAIN,       SETLOOP,
        NEAD_16,        INTERL,         ENVSETUP1,      ENVMIXER,
        LOADBUFF,       SAVEBUFF,       ENVSETUP2,      UNKNOWN
    };

    alist_process(hle, ABI, 0x18);
}

void alist_process_nead_1080(CHle * hle)
{
    static const acmd_callback_t ABI[0x18] = {
        UNKNOWN,        ADPCM,          CLEARBUFF,      UNKNOWN,
        ADDMIXER,       RESAMPLE,       RESAMPLE_ZOH,   FILTER,
        SETBUFF,        DUPLICATE,      DMEMMOVE,       LOADADPCM,
        MIXER,          INTERLEAVE,     HILOGAIN,       SETLOOP,
        NEAD_16,        INTERL,         ENVSETUP1,      ENVMIXER,
        LOADBUFF,       SAVEBUFF,       ENVSETUP2,      UNKNOWN
    };

    alist_process(hle, ABI, 0x18);
}

void alist_process_nead_oot(CHle * hle)
{
    static const acmd_callback_t ABI[0x18] = {
        UNKNOWN,        ADPCM,          CLEARBUFF,      UNKNOWN,
        ADDMIXER,       RESAMPLE,       RESAMPLE_ZOH,   FILTER,
        SETBUFF,        DUPLICATE,      DMEMMOVE,       LOADADPCM,
        MIXER,          INTERLEAVE,     HILOGAIN,       SETLOOP,
        NEAD_16,        INTERL,         ENVSETUP1,      ENVMIXER,
        LOADBUFF,       SAVEBUFF,       ENVSETUP2,      UNKNOWN
    };

    alist_process(hle, ABI, 0x18);
}

void alist_process_nead_mm(CHle * hle)
{
    static const acmd_callback_t ABI[0x18] = {
        UNKNOWN,        ADPCM,          CLEARBUFF,      SPNOOP,
        ADDMIXER,       RESAMPLE,       RESAMPLE_ZOH,   FILTER,
        SETBUFF,        DUPLICATE,      DMEMMOVE,       LOADADPCM,
        MIXER,          INTERLEAVE,     HILOGAIN,       SETLOOP,
        NEAD_16,        INTERL,         ENVSETUP1,      ENVMIXER,
        LOADBUFF,       SAVEBUFF,       ENVSETUP2,      UNKNOWN
    };

    alist_process(hle, ABI, 0x18);
}

void alist_process_nead_mmb(CHle * hle)
{
    static const acmd_callback_t ABI[0x18] = {
        SPNOOP,         ADPCM,          CLEARBUFF,      SPNOOP,
        ADDMIXER,       RESAMPLE,       RESAMPLE_ZOH,   FILTER,
        SETBUFF,        DUPLICATE,      DMEMMOVE,       LOADADPCM,
        MIXER,          INTERLEAVE,     HILOGAIN,       SETLOOP,
        NEAD_16,        INTERL,         ENVSETUP1,      ENVMIXER,
        LOADBUFF,       SAVEBUFF,       ENVSETUP2,      UNKNOWN
    };

    alist_process(hle, ABI, 0x18);
}

void alist_process_nead_ac(CHle * hle)
{
    static const acmd_callback_t ABI[0x18] = {
        UNKNOWN,        ADPCM,          CLEARBUFF,      SPNOOP,
        ADDMIXER,       RESAMPLE,       RESAMPLE_ZOH,   FILTER,
        SETBUFF,        DUPLICATE,      DMEMMOVE,       LOADADPCM,
        MIXER,          INTERLEAVE,     HILOGAIN,       SETLOOP,
        NEAD_16,        INTERL,         ENVSETUP1,      ENVMIXER,
        LOADBUFF,       SAVEBUFF,       ENVSETUP2,      UNKNOWN
    };

    alist_process(hle, ABI, 0x18);
}