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example/aica_xm: unpack samples

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This commit is contained in:
Zack Buhman 2025-05-15 22:51:08 -05:00
parent 0b3cf2ead5
commit 40f3484550
3 changed files with 192 additions and 21 deletions
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8
example/aica/aica.mk
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@ -9,8 +9,12 @@ example/aica/aica.elf: $(START_OBJ) $(AICA_OBJ)
AICA_XM_OBJ = \
example/aica/aica_xm.o \
sh7091/serial.o \
example/arm/xm.bin.o \
example/arm/channel.bin.o
example/arm/channel.bin.o \
sh7091/c_serial.o \
printf/printf.o \
printf/unparse.o \
printf/parse.o \
xm/milkypack01.xm.o
example/aica/aica_xm.elf: LDSCRIPT = $(LIB)/main.lds
example/aica/aica_xm.elf: $(START_OBJ) $(AICA_XM_OBJ)

203
example/aica/aica_xm.cpp
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@ -1,18 +1,149 @@
#include "memorymap.hpp"
#include "sh7091/serial.hpp"
#include "systembus.hpp"
#include "systembus_bits.hpp"
#include "aica/aica.hpp"
#include "sh7091/sh7091.hpp"
#include "sh7091/sh7091_bits.hpp"
#include "sh7091/serial.hpp"
#include "printf/printf.h"
#include "assert.h"
#include "example/arm/xm.bin.h"
//#include "example/arm/xm.bin.h"
#include "xm/xm.h"
#include "xm/milkypack01.xm.h"
extern void * _binary_start __asm("_binary_example_arm_channel_bin_start");
extern void * _binary_size __asm("_binary_example_arm_channel_bin_size");
constexpr int max_patterns = 64;
constexpr int max_instruments = 128;
struct xm_state {
xm_header_t * header;
xm_pattern_header_t * pattern_header[max_patterns];
xm_instrument_header_t * instrument_header[max_instruments];
xm_sample_header_t * sample_header[max_instruments]; // array
int sample_data_offset[max_instruments];
};
xm_state xm = {0};
void print_u8(int8_t * chars, int length, const char * end)
{
for (int i = 0; i < length; i++) {
int8_t c = chars[i];
if (c >= 0x20 && c <= 0x7e) {
sh7091_character(c);
} else {
printf("\\x%02x", c);
}
}
if (end != NULL) {
while (*end != 0)
sh7091_character(*end++);
}
}
int s16(void * buf)
{
uint8_t * b = (uint8_t *)buf;
int16_t v = (b[0] << 0) | (b[1] << 8);
return v;
}
int s32(void * buf)
{
uint8_t * b = (uint8_t *)buf;
int32_t v = (b[0] << 0) | (b[1] << 8) | (b[2] << 16) | (b[3] << 24);
return v;
}
uint8_t __attribute__((aligned(32))) sample_data[512 * 1024];
int sample_data_ix;
int unpack_sample(int buf, int offset, xm_sample_header_t * sample_header)
{
int size = s32(&sample_header->sample_length);
if (sample_header->type & (1 << 4)) { // 16-bit samples
int num_samples = size / 2;
int old = 0;
volatile int16_t * out = (volatile int16_t *)(&sample_data[sample_data_ix]);
int16_t * in = (int16_t *)(buf + offset);
for (int i = 0; i < num_samples; i++) {
old += s16(&in[i]);
out[i] = old;
}
} else { // 8-bit
int num_samples = size;
int old = 0;
volatile int8_t * out = (volatile int8_t *)(&sample_data[sample_data_ix]);
int8_t * in = (int8_t *)(buf + offset);
for (int i = 0; i < num_samples; i++) {
old += in[i];
out[i] = old;
}
}
if (size & 1) {
size += 1;
}
return size;
}
int xm_samples_init(int buf, int offset, int instrument_ix, int number_of_samples)
{
xm_sample_header_t * sample_header[number_of_samples];
xm.sample_header[instrument_ix] = (xm_sample_header_t *)(buf + offset);
for (int i = 0; i < number_of_samples; i++) {
sample_header[i] = (xm_sample_header_t *)(buf + offset);
offset += (sizeof (xm_sample_header_t));
}
for (int i = 0; i < number_of_samples; i++) {
int sample_length = s32(&sample_header[i]->sample_length);
if (sample_length > 0) {
printf("instrument % 2d sample_length % 6d ix %d\n", instrument_ix, sample_length, sample_data_ix);
xm.sample_data_offset[instrument_ix] = sample_data_ix;
sample_data_ix += unpack_sample(buf, offset, sample_header[i]);
assert(sample_data_ix <= (int)(sizeof (sample_data)));
}
offset += sample_length;
}
return offset;
}
void xm_init(int buf)
{
sample_data_ix = 0;
xm.header = (xm_header_t *)(buf);
int offset = s32(&xm.header->header_size) + (offsetof (struct xm_header, header_size));
int number_of_patterns = s16(&xm.header->number_of_patterns);
printf("number_of_patterns: %d\n", number_of_patterns);
for (int i = 0; i < number_of_patterns; i++) {
xm_pattern_header_t * pattern_header = (xm_pattern_header_t *)(buf + offset);
xm.pattern_header[i] = pattern_header;
offset += s32(&pattern_header->pattern_header_length) + s16(&pattern_header->packed_pattern_data_size);
}
printf("end_of_patterns: %d\n", offset);
int number_of_instruments = s16(&xm.header->number_of_instruments);
for (int i = 0; i < number_of_instruments; i++) {
xm_instrument_header_t * instrument_header = (xm_instrument_header_t *)(buf + offset);
xm.instrument_header[i] = instrument_header;
offset += s32(&instrument_header->instrument_size);
int number_of_samples = s16(&instrument_header->number_of_samples);
offset = xm_samples_init(buf, offset, i, number_of_samples);
}
printf("end_of_instruments: %d\n", offset);
}
void wait()
{
uint32_t ffst = system.FFST;
@ -53,35 +184,67 @@ void g2_aica_dma_wait_complete()
// wait for maple DMA completion
while ((system.ISTNRM & istnrm::end_of_dma_aica_dma) == 0);
system.ISTNRM = istnrm::end_of_dma_aica_dma;
assert(g2_if.ADST == 0);
}
uint8_t __attribute__((aligned(32))) zero[32768] = {0};
uint8_t __attribute__((aligned(32))) zero[0x28c0] = {};
void main()
{
serial::init(0);
const int start = reinterpret_cast<int>(&_binary_start);
const int size = reinterpret_cast<int>(&_binary_size);
int buf = (int)&_binary_xm_milkypack01_xm_start;
xm_init(buf);
wait(); aica_sound.common.vreg_armrst = aica::vreg_armrst::ARMRST(1);
wait(); aica_sound.common.dmea0_mrwinh = aica::dmea0_mrwinh::MRWINH(0b0111);
system.ISTNRM = istnrm::end_of_dma_aica_dma;
g2_aica_dma((uint32_t)&aica_sound, (int)zero, 32768);
// slot/common: 00700000 - 007028c0 (excludes vreg_armrst)
g2_aica_dma((uint32_t)0x00700000, (int)zero, 0x28c0);
g2_aica_dma_wait_complete();
assert(g2_if.ADST == 0);
g2_aica_dma((uint32_t)aica_wave_memory, start, size);
g2_aica_dma_wait_complete();
assert(g2_if.ADST == 0);
for (int i = 0; i < size / 4; i++) {
wait();
assert(aica_wave_memory[i] == ((uint32_t*)start)[i]);
// dsp : 00703000 - 007045c8
g2_aica_dma((uint32_t)0x00703000, (int)zero, 0x15e0);
g2_aica_dma_wait_complete();
printf("i[0] start %d size %d\n",
xm.sample_data_offset[0],
s32(&xm.sample_header[0]->sample_length));
for (int i = 0; i < 16; i++) {
serial::hexlify(&sample_data[i * 16], 16);
}
printf("transfer %08x %08x %d\n", (int)aica_wave_memory, (int)sample_data, sample_data_ix);
// wave memory
g2_aica_dma((int)aica_wave_memory, (int)sample_data, (sample_data_ix + 31) & (~31));
g2_aica_dma_wait_complete();
g2_aica_dma((int)aica_wave_memory, (int)sample_data, (sample_data_ix + 31) & (~31));
g2_aica_dma_wait_complete();
/*
for (int i = 0; i < 16; i++) {
volatile uint8_t * s = &((volatile uint8_t*)aica_wave_memory)[i * 16];
for (int j = 0; j < 16; j++) {
wait();
serial::hexlify(s[j]);
serial::character(' ');
}
serial::character('\n');
}
*/
sh7091.TMU.TSTR = 0; // stop all timers
sh7091.TMU.TOCR = tmu::tocr::tcoe::tclk_is_external_clock_or_input_capture;
sh7091.TMU.TCR0 = tmu::tcr0::tpsc::p_phi_256; // 256 / 50MHz = 5.12 μs ; underflows in ~1 hour
sh7091.TMU.TCOR0 = 0xffff'ffff;
sh7091.TMU.TCNT0 = 0xffff'ffff;
sh7091.TMU.TSTR = tmu::tstr::str0::counter_start;
wait(); aica_sound.common.dmea0_mrwinh = aica::dmea0_mrwinh::MRWINH(0b0001);
/*
wait(); aica_sound.channel[0].KYONB(1);
wait(); aica_sound.channel[0].LPCTL(1);
wait(); aica_sound.channel[0].PCMS(0);
@ -92,7 +255,7 @@ void main()
wait(); aica_sound.channel[0].RR(0x0);
wait(); aica_sound.channel[0].AR(0x1f);
wait(); aica_sound.channel[0].OCT(0);
wait(); aica_sound.channel[0].OCT(-3);
wait(); aica_sound.channel[0].FNS(0);
wait(); aica_sound.channel[0].DISDL(0xf);
wait(); aica_sound.channel[0].DIPAN(0x0);
@ -108,12 +271,16 @@ void main()
| aica::mono_mem8mb_dac18b_ver_mvol::MVOL(0xf) // 15/15 volume
;
wait(); aica_sound.channel[0].SA(44100 * 2);
wait(); aica_sound.channel[0].SA(xm.sample_data_offset[0]);
int lsa = xm.sample_header[0]->sample_loop_start / 2;
int lea = xm.sample_header[0]->sample_loop_length / 2;
printf("sa %d lsa %d lea %d\n", xm.sample_data_offset[0], lsa, lsa + lea);
wait(); aica_sound.channel[0].LSA(lsa);
wait(); aica_sound.channel[0].LEA(lsa + lea);
wait(); aica_sound.channel[0].KYONB(1);
wait(); aica_sound.channel[0].KYONEX(1);
*/
while (1) {
for (int i = 0; i < 10000000; i++) {
asm volatile ("nop");
}
}
}

2
example/arm/channel.cpp
View File

@ -47,7 +47,7 @@ void main()
uint32_t segment = 0;
dram[0] = 0x11223344;
dram[0] = 0x11229944;
dram[1] = sine_addr;
constexpr uint32_t timer_a_interrupt = (1 << 6);
aica_sound.common.scire = timer_a_interrupt;