+++ /dev/null
-/* Copyright (c) 2003-2021 James Daniels */
-/* Distributed under the MIT License */
-/* license terms: see LICENSE file in root or http://opensource.org/licenses/MIT */
-
-#include "AAS_Shared.h"
-#include "../../src/debug.h"
-
-extern const int AAS_data_v111;
-int AAS_lib_v111 AAS_IN_EWRAM;
-
-static AAS_BOOL AAS_da_active AAS_IN_EWRAM;
-static AAS_BOOL AAS_db_active AAS_IN_EWRAM;
-static AAS_BOOL AAS_dynamic_mix_rate AAS_IN_EWRAM;
-
-/* 0 = 0 Hz mix rate */
-/* 1 = 800 Hz mix rate, 16 byte mix buffer */
-/* 2 = 1600 Hz mix rate, 32 byte mix buffer */
-/* n = 800n Hz mix rate, 16n byte mix buffer */
-/* n <= 40 */
-/* REG_TM1D = 0x10000 - 16n; */
-/* REG_TM0D = AAS_tick_rate[n]; // 0x10000 - ((int)(16777216/800n)); */
-static AAS_u8 AAS_req_mix_rate AAS_IN_EWRAM;
-static AAS_u8 AAS_next_mix_rate AAS_IN_EWRAM;
-
-static AAS_u8 *AAS_next_mixing_buffer AAS_IN_EWRAM;
-
-static AAS_BOOL AAS_DSA_first AAS_IN_EWRAM = AAS_TRUE;
-
-static AAS_u8 AAS_MaxChans AAS_IN_EWRAM = 4;
-
-static AAS_BOOL AAS_Loud AAS_IN_EWRAM = AAS_FALSE;
-static AAS_u8 AAS_MixAudio_Mode AAS_IN_EWRAM = AAS_MIXAUDIO_MODE_NORMAL;
-
-
-void AAS_MixAudio_SetMode_Normal();
-void AAS_MixAudio_SetMode_Boost();
-void AAS_MixAudio_SetMode_BoostAndClip();
-void AAS_MOD_Interrupt();
-
-
-void AAS_MixAudio_SetMode(int mode)
-{
- if(mode != AAS_MixAudio_Mode) {
- switch (mode) {
- case AAS_MIXAUDIO_MODE_NORMAL:
- AAS_MixAudio_SetMode_Normal();
- AAS_MixAudio_Mode = AAS_MIXAUDIO_MODE_NORMAL;
- AAS_changed[0] = AAS_TRUE;
- AAS_changed[1] = AAS_TRUE;
- break;
-
- case AAS_MIXAUDIO_MODE_BOOST:
- AAS_MixAudio_SetMode_Boost();
- AAS_MixAudio_Mode = AAS_MIXAUDIO_MODE_BOOST;
- AAS_changed[0] = AAS_TRUE;
- AAS_changed[1] = AAS_TRUE;
- break;
-
- case AAS_MIXAUDIO_MODE_BOOSTANDCLIP:
- AAS_MixAudio_SetMode_BoostAndClip();
- AAS_MixAudio_Mode = AAS_MIXAUDIO_MODE_BOOSTANDCLIP;
- AAS_changed[0] = AAS_TRUE;
- AAS_changed[1] = AAS_TRUE;
- break;
-
- default:
- break;
- }
- }
-}
-
-static void AAS_DoConfig(int mix_rate, int volscale, AAS_BOOL stereo, AAS_BOOL dynamic,
- AAS_BOOL loud, int chans)
-{
- struct AAS_Channel *ch;
- int i;
-
- AAS_MOD_Stop();
-
- if(!AAS_initialised) {
- REG_SOUNDCNT_X = 0x0080; /* turn sound chip on */
-
- REG_DMA1SAD = (AAS_u32) AAS_mix_buffer; /*dma1 source */
- REG_DMA1DAD = 0x040000a0; /*write to FIFO A address */
- REG_DMA1CNT_H = 0xb600; /*dma control: DMA enabled+ start on FIFO+32bit+repeat+increment source&dest */
-
- REG_DMA2SAD = (AAS_u32) (AAS_mix_buffer + 160); /*dma2 source */
- REG_DMA2DAD = 0x040000a4; /*write to FIFO B address */
- REG_DMA2CNT_H = 0xb600; /*dma control: DMA enabled+ start on FIFO+32bit+repeat+increment source&dest */
-
- AAS_next_mixing_buffer = ((AAS_u8 *) AAS_mix_buffer) + 1280;
-
- REG_IE |= 0x10; /* Enable irq for timer 1 */
- REG_IME = 1; /* Enable all interrupts */
-
- AAS_da_active = AAS_FALSE;
- AAS_db_active = AAS_FALSE;
- }
-
- REG_TM0CNT = 0x0;
- REG_TM1CNT = 0x0;
-
- if(chans != AAS_MaxChans) {
- switch (chans) {
- case 8:
- AAS_MixAudio_SetMaxChans_8();
- break;
-
- case 4:
- AAS_MixAudio_SetMaxChans_4();
- break;
-
- default:
- AAS_MixAudio_SetMaxChans_2();
- break;
- }
- AAS_MaxChans = chans;
- }
-
- AAS_next_mix_rate = AAS_req_mix_rate = mix_rate;
- AAS_mix_scale = ((AAS_DivTable[mix_rate] * 82) + 128) >> 6;
- AAS_dynamic_mix_rate = dynamic;
-
- if(stereo) {
- const AAS_u8 chan_rearrange[AAS_MAX_CHANNELS] =
- { 0, 8, 9, 1, 2, 10, 11, 3, 4, 12, 13, 5, 6, 14, 15, 7 };
-
- for(i = 0; i < AAS_MAX_CHANNELS; ++i) {
- AAS_chan_rearrange[i] = chan_rearrange[i];
- }
-
- REG_SOUNDCNT_H = 0x9a0d; /*enable DS A&B + fifo reset + use timer0 + 100% volume to L and R */
- } else {
- int a, b;
-
- a = 0;
- for(b = 0; b < chans; ++b) {
- AAS_chan_rearrange[a] = b;
- ++a;
- }
- for(b = 0; b < chans; ++b) {
- AAS_chan_rearrange[a] = b + 8;
- ++a;
- }
-
- REG_SOUNDCNT_H = 0xbb0d; /*enable DS A&B + fifo reset + use timer0 + 100% volume to L and R */
- }
-
- ch = &AAS_channels[0];
- for(i = 16; i > 0; --i) {
- ch->active = AAS_FALSE;
- ch->loop_length = 0;
- ch->pos = 0;
- ch->end = 0;
- ch->delta = 0;
- ++ch;
- }
-
- AAS_volscale = volscale;
-
- AAS_Loud = loud;
- if(!loud)
- AAS_MixAudio_SetMode(AAS_MIXAUDIO_MODE_NORMAL);
-
- REG_TM0D = AAS_tick_rate[mix_rate];
- REG_TM0CNT = 0x0080; /* Enable timer0 */
-
- REG_TM1D = 0x10000 - (mix_rate << 4);
- REG_TM1CNT = 0xC4; /*enable timer1 + irq and cascade from timer 0 */
-
- AAS_lib_v111 = AAS_data_v111;
-}
-
-int AAS_SetConfig(int config_mix, int config_chans, int config_spatial, int config_dynamic)
-{
- int i, chans, mix_rate, volscale, ret;
- AAS_BOOL stereo;
- AAS_BOOL dynamic;
- AAS_BOOL loud;
-
- ret = AAS_OK;
-
- switch (config_mix) {
- case AAS_CONFIG_MIX_32KHZ:
- mix_rate = 40;
- break;
-
- case AAS_CONFIG_MIX_28KHZ:
- mix_rate = 35;
- break;
-
- case AAS_CONFIG_MIX_24KHZ:
- mix_rate = 30;
- break;
-
- case AAS_CONFIG_MIX_20KHZ:
- mix_rate = 25;
- break;
-
- case AAS_CONFIG_MIX_16KHZ:
- mix_rate = 20;
- break;
-
- case AAS_CONFIG_MIX_12KHZ:
- mix_rate = 15;
- break;
-
- case AAS_CONFIG_MIX_8KHZ:
- mix_rate = 10;
- break;
-
- default:
- ret = AAS_ERROR_INVALID_CONFIG;
- break;
- }
-
- switch (config_chans) {
- case AAS_CONFIG_CHANS_16_LOUD:
- volscale = 9;
- loud = AAS_TRUE;
- chans = 8;
- break;
-
- case AAS_CONFIG_CHANS_8_LOUD:
- volscale = 8;
- loud = AAS_TRUE;
- chans = 4;
- break;
-
- case AAS_CONFIG_CHANS_4_LOUD:
- volscale = 7;
- loud = AAS_TRUE;
- chans = 2;
- break;
-
- case AAS_CONFIG_CHANS_16:
- volscale = 9;
- loud = AAS_FALSE;
- chans = 8;
- break;
-
- case AAS_CONFIG_CHANS_8:
- volscale = 8;
- loud = AAS_FALSE;
- chans = 4;
- break;
-
- case AAS_CONFIG_CHANS_4:
- volscale = 7;
- loud = AAS_FALSE;
- chans = 2;
- break;
-
- default:
- ret = AAS_ERROR_INVALID_CONFIG;
- break;
- }
-
- switch (config_spatial) {
- case AAS_CONFIG_SPATIAL_MONO:
- stereo = AAS_FALSE;
- break;
-
- case AAS_CONFIG_SPATIAL_STEREO:
- stereo = AAS_TRUE;
- break;
-
- default:
- ret = AAS_ERROR_INVALID_CONFIG;
- break;
- }
-
- switch (config_dynamic) {
- case AAS_CONFIG_DYNAMIC_ON:
- dynamic = AAS_TRUE;
- break;
-
- case AAS_CONFIG_DYNAMIC_OFF:
- dynamic = AAS_FALSE;
- break;
-
- default:
- ret = AAS_ERROR_INVALID_CONFIG;
- break;
- }
-
- if(ret == AAS_OK) {
- AAS_DoConfig(mix_rate, volscale, stereo, dynamic, loud, chans);
-
- AAS_initialised = AAS_TRUE;
- }
-
- return ret;
-}
-
-const AAS_s8 *AAS_GetOutputBufferAddress(int buffer)
-{
- switch (buffer) {
- case 0:
- if(AAS_da_active)
- return AAS_next_mixing_buffer;
- else
- return AAS_NULL;
- break;
-
- case 1:
- if(AAS_db_active)
- return AAS_next_mixing_buffer + 640;
- else
- return AAS_NULL;
- break;
-
- default:
- return AAS_NULL;
- break;
- }
-}
-
-int AAS_GetOutputBufferLength()
-{
- return AAS_next_mix_rate * 16;
-}
-
-const AAS_u32 AAS_zero_vols[160] = { 0 };
-
-static AAS_BOOL AAS_interrupt_occured AAS_IN_EWRAM = AAS_FALSE;
-
-void AAS_FastTimer1InterruptHandler()
-{
- if(AAS_dynamic_mix_rate) {
- REG_TM0CNT = 0x0;
- REG_TM0D = AAS_tick_rate[AAS_next_mix_rate];
- REG_TM0CNT = 0x0080; /* Enable timer0 */
- REG_TM1CNT = 0x0;
- REG_TM1D = 0x10000 - (AAS_next_mix_rate << 4);
- REG_TM1CNT = 0xC4; /* Enable timer1 + irq and cascade from timer 0 */
- }
-
- REG_DMA1CNT = 0x84400004;
- REG_DMA2CNT = 0x84400004;
- REG_DMA1CNT_H = 0x0440;
- REG_DMA2CNT_H = 0x0440;
- if(AAS_da_active)
- REG_DMA1SAD = (unsigned long)AAS_next_mixing_buffer; /* DMA1 source */
- else
- REG_DMA1SAD = (unsigned long)AAS_zero_vols;
- REG_DMA1CNT_H = 0xb600; /* DMA control: DMA enabled+start on FIFO+32bit+repeat+increment source&dest */
- /* Get click on hardware when switch off DMA on Direct Sound B, so have to do it this way instead */
- if(AAS_db_active)
- REG_DMA2SAD = (unsigned long)AAS_next_mixing_buffer + 640; /* DMA2 source */
- else
- REG_DMA2SAD = (unsigned long)AAS_zero_vols; /* DMA2 source */
- REG_DMA2CNT_H = 0xb600; /* DMA control: DMA enabled+start on FIFO+32bit+repeat+increment source&dest */
-
- AAS_interrupt_occured = AAS_TRUE;
-}
-
-#define READCH1 \
- if ( ch->active ) \
- { \
- int vol = ch->volume; \
- if ( vol == 0 ) \
- { \
- int delta = ch->delta; \
- const AAS_s8* end_addr; \
- addr = ch->pos + ((delta*curr_mix_rate)>>6); \
- end_addr = (ch->end - (delta>>6)) - 1; \
- if ( addr >= end_addr ) \
- { \
- int ll = ch->loop_length; \
- if ( ll ) \
- { \
- while( addr >= end_addr ) \
- { \
- addr -= ll; \
- } \
- } \
- else \
- { \
- ch->active = AAS_FALSE; \
- } \
- } \
- ch->pos = addr; \
- } \
- else \
- { \
- tmp1 += vol; \
- } \
- ch->effective_volume = vol; \
- } \
- else \
- { \
- ch->effective_volume = 0; \
- } \
-
-#define READCH2 \
- if ( ch->active ) \
- { \
- int vol = ch->volume; \
- if ( vol == 0 ) \
- { \
- int delta = ch->delta; \
- const AAS_s8* end_addr; \
- addr = ch->pos + ((delta*curr_mix_rate)>>6); \
- end_addr = (ch->end - (delta>>6)) - 1; \
- if ( addr >= end_addr ) \
- { \
- int ll = ch->loop_length; \
- if ( ll ) \
- { \
- while( addr >= end_addr ) \
- { \
- addr -= ll; \
- } \
- } \
- else \
- { \
- ch->active = AAS_FALSE; \
- } \
- } \
- ch->pos = addr; \
- } \
- else \
- { \
- tmp2 += vol; \
- } \
- ch->effective_volume = vol; \
- } \
- else \
- { \
- ch->effective_volume = 0; \
- } \
-
-void AAS_DoWork()
-{
- if(AAS_interrupt_occured) {
- AAS_interrupt_occured = AAS_FALSE;
-
- if(AAS_next_mixing_buffer == (AAS_u8 *) AAS_mix_buffer)
- AAS_next_mixing_buffer = ((AAS_u8 *) AAS_mix_buffer) + 1280;
- else
- AAS_next_mixing_buffer = ((AAS_u8 *) AAS_mix_buffer);
-
- AAS_MOD_Interrupt();
-
- {
- int tmp1, tmp2, val, curr_mix_rate;
- struct AAS_Channel *ch;
- const AAS_s8 *addr;
-
- curr_mix_rate = AAS_req_mix_rate;
-
- if(AAS_dynamic_mix_rate) {
- val = 0;
- ch = &AAS_channels[0];
- for(tmp2 = AAS_MaxChans; tmp2 > 0; --tmp2) {
- if(ch->active && (ch->volume > 0)) {
- tmp1 = ch->frequency;
- if(tmp1 > val)
- val = tmp1;
- }
- ++ch;
- }
-
- ch = &AAS_channels[8];
- for(tmp2 = AAS_MaxChans; tmp2 > 0; --tmp2) {
- if(ch->active && (ch->volume > 0)) {
- tmp1 = ch->frequency;
- if(tmp1 > val)
- val = tmp1;
- }
- ++ch;
- }
-
- val = ((val * 82) >> 16) + 1;
- if(val < curr_mix_rate)
- curr_mix_rate = val;
-
- if(AAS_next_mix_rate != curr_mix_rate) {
- AAS_next_mix_rate = curr_mix_rate;
- AAS_mix_scale = val = ((AAS_DivTable[curr_mix_rate] * 82) + 128) >> 6;
- ch = &AAS_channels[0];
- for(tmp2 = AAS_MaxChans; tmp2 > 0; --tmp2) {
- if(ch->active)
- ch->delta = AAS_Min(4095, ((ch->frequency * val) + 32768) >> 16);
- ++ch;
- }
-
- ch = &AAS_channels[8];
- for(tmp2 = AAS_MaxChans; tmp2 > 0; --tmp2) {
- if(ch->active)
- ch->delta = AAS_Min(4095, ((ch->frequency * val) + 32768) >> 16);
- ++ch;
- }
-
- AAS_changed[0] = AAS_TRUE;
- AAS_changed[1] = AAS_TRUE;
- }
- }
-
- tmp1 = 0;
- tmp2 = 0;
-
- ch = &AAS_channels[0];
- switch (AAS_MaxChans) {
- case 8:
- READCH1++ ch;
- READCH1++ ch;
- READCH1++ ch;
- READCH1++ ch;
- READCH1++ ch;
- READCH1++ ch;
- READCH1++ ch;
- READCH1++ ch;
- READCH2++ ch;
- READCH2++ ch;
- READCH2++ ch;
- READCH2++ ch;
- READCH2++ ch;
- READCH2++ ch;
- READCH2++ ch;
- READCH2 break;
-
- case 4:
- READCH1++ ch;
- READCH1++ ch;
- READCH1++ ch;
- READCH1 ch = &AAS_channels[8];
- READCH2++ ch;
- READCH2++ ch;
- READCH2++ ch;
- READCH2 break;
-
- case 2:
- default:
- READCH1++ ch;
- READCH1 ch = &AAS_channels[8];
- READCH2++ ch;
- READCH2 break;
- }
-
- if(AAS_Loud) {
- if(AAS_DSA_first) {
- /* Direct Sound A */
- if(tmp1) {
- if(tmp1 > 128) {
- AAS_MixAudio_SetMode(AAS_MIXAUDIO_MODE_BOOSTANDCLIP);
- } else {
- AAS_MixAudio_SetMode(AAS_MIXAUDIO_MODE_BOOST);
- }
-
- if(AAS_changed[0]) {
- AAS_INIT_BRANCH
- AAS_BRANCH(AAS_MixAudio, AAS_next_mixing_buffer, &AAS_channels[0], curr_mix_rate);
- } else {
- AAS_INIT_BRANCH
- AAS_BRANCH(AAS_MixAudio_NoChange, AAS_next_mixing_buffer, &AAS_channels[0], curr_mix_rate);
- }
- AAS_da_active = AAS_TRUE;
- } else {
- AAS_da_active = AAS_FALSE;
- }
-
- /* Direct Sound B */
- if(tmp2) {
- if(tmp2 > 128) {
- AAS_MixAudio_SetMode(AAS_MIXAUDIO_MODE_BOOSTANDCLIP);
- } else {
- AAS_MixAudio_SetMode(AAS_MIXAUDIO_MODE_BOOST);
- }
-
- {
- AAS_INIT_BRANCH
- AAS_BRANCH(AAS_MixAudio, AAS_next_mixing_buffer + 640, &AAS_channels[8], curr_mix_rate);
- }
-
- AAS_db_active = AAS_TRUE;
- } else {
- AAS_db_active = AAS_FALSE;
- }
-
- AAS_DSA_first = AAS_FALSE;
- } else {
- /* Direct Sound B */
- if(tmp2) {
- if(tmp2 > 128) {
- AAS_MixAudio_SetMode(AAS_MIXAUDIO_MODE_BOOSTANDCLIP);
- } else {
- AAS_MixAudio_SetMode(AAS_MIXAUDIO_MODE_BOOST);
- }
-
- if(AAS_changed[1]) {
- AAS_INIT_BRANCH
- AAS_BRANCH(AAS_MixAudio, AAS_next_mixing_buffer + 640, &AAS_channels[8], curr_mix_rate);
- } else {
- AAS_INIT_BRANCH
- AAS_BRANCH(AAS_MixAudio_NoChange, AAS_next_mixing_buffer + 640, &AAS_channels[8], curr_mix_rate);
- }
- AAS_db_active = AAS_TRUE;
- } else {
- AAS_db_active = AAS_FALSE;
- }
-
- /* Direct Sound A */
- if(tmp1) {
- if(tmp1 > 128) {
- AAS_MixAudio_SetMode(AAS_MIXAUDIO_MODE_BOOSTANDCLIP);
- } else {
- AAS_MixAudio_SetMode(AAS_MIXAUDIO_MODE_BOOST);
- }
-
- {
- AAS_INIT_BRANCH
- AAS_BRANCH(AAS_MixAudio, AAS_next_mixing_buffer, &AAS_channels[0], curr_mix_rate);
- }
-
- AAS_da_active = AAS_TRUE;
- } else {
- AAS_da_active = AAS_FALSE;
- }
-
- AAS_DSA_first = AAS_TRUE;
- }
- } else {
- if(AAS_DSA_first) {
- /* Direct Sound A */
- if(tmp1) {
- if(AAS_changed[0]) {
- AAS_INIT_BRANCH
- AAS_BRANCH(AAS_MixAudio, AAS_next_mixing_buffer, &AAS_channels[0], curr_mix_rate);
- } else {
- AAS_INIT_BRANCH
- AAS_BRANCH(AAS_MixAudio_NoChange, AAS_next_mixing_buffer, &AAS_channels[0], curr_mix_rate);
- }
- AAS_da_active = AAS_TRUE;
- } else {
- AAS_da_active = AAS_FALSE;
- }
-
- /* Direct Sound B */
- if(tmp2) {
- {
- AAS_INIT_BRANCH
- AAS_BRANCH(AAS_MixAudio, AAS_next_mixing_buffer + 640, &AAS_channels[8], curr_mix_rate);
- }
- AAS_db_active = AAS_TRUE;
- } else {
- AAS_db_active = AAS_FALSE;
- }
-
- AAS_DSA_first = AAS_FALSE;
- } else {
- /* Direct Sound B */
- if(tmp2) {
- if(AAS_changed[1]) {
- AAS_INIT_BRANCH
- AAS_BRANCH(AAS_MixAudio, AAS_next_mixing_buffer + 640, &AAS_channels[8], curr_mix_rate);
- } else {
- AAS_INIT_BRANCH
- AAS_BRANCH(AAS_MixAudio_NoChange, AAS_next_mixing_buffer + 640, &AAS_channels[8], curr_mix_rate);
- }
- AAS_db_active = AAS_TRUE;
- } else {
- AAS_db_active = AAS_FALSE;
- }
-
- /* Direct Sound A */
- if(tmp1) {
- {
- AAS_INIT_BRANCH
- AAS_BRANCH(AAS_MixAudio, AAS_next_mixing_buffer, &AAS_channels[0], curr_mix_rate);
- }
-
- AAS_da_active = AAS_TRUE;
- } else {
- AAS_da_active = AAS_FALSE;
- }
-
- AAS_DSA_first = AAS_TRUE;
- }
- }
-
- AAS_changed[0] = AAS_FALSE;
- AAS_changed[1] = AAS_FALSE;
- }
- }
-}
-
-void AAS_Timer1InterruptHandler()
-{
- AAS_FastTimer1InterruptHandler();
- AAS_DoWork();
-}
-
-int AAS_GetActualMixRate()
-{
- return AAS_next_mix_rate * 800;
-}
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