finally output envelopes
apparently emulating the timers was necessary after all...
This commit is contained in:
parent
fff64acf09
commit
c78cc8c676
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@ -27,6 +27,7 @@ src/log.cpp
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extern/Nuked-OPN2/ym3438.c
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src/engine/platform/sound/sn76496.cpp
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src/engine/platform/sound/gb/apu.c
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src/engine/platform/sound/gb/timing.c
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src/engine/blip_buf.c
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src/engine/safeReader.cpp
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@ -8,16 +8,9 @@
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#define FREQ_BASE 7943.75f
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void DivPlatformGB::acquire(int& l, int& r) {
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gb->apu.apu_cycles=4;
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GB_apu_run(gb);
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l=(gb->apu_output.current_sample[0].left+
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gb->apu_output.current_sample[1].left+
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gb->apu_output.current_sample[2].left+
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gb->apu_output.current_sample[3].left)<<6;
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r=(gb->apu_output.current_sample[0].right+
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gb->apu_output.current_sample[1].right+
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gb->apu_output.current_sample[2].right+
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gb->apu_output.current_sample[3].right)<<6;
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GB_advance_cycles(gb,2);
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l=gb->apu_output.final_sample.left<<3;
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r=gb->apu_output.final_sample.right<<3;
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}
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void DivPlatformGB::tick() {
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@ -4,7 +4,6 @@
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#include <assert.h>
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#include "gb.h"
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#define CGB 0
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#define GB_CLOCK_RATE 0x400000
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#define likely(x) __builtin_expect((x), 1)
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@ -277,8 +276,7 @@ static void render(GB_gameboy_t *gb)
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filtered_output.left = MAX(MIN(filtered_output.left + interference_bias, 0x7FFF), -0x8000);
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filtered_output.right = MAX(MIN(filtered_output.right + interference_bias, 0x7FFF), -0x8000);
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}
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assert(gb->apu_output.sample_callback);
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gb->apu_output.sample_callback(gb, &filtered_output);
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gb->apu_output.final_sample=filtered_output;
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}
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static void update_square_sample(GB_gameboy_t *gb, unsigned index)
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@ -5,10 +5,6 @@
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#include <stddef.h>
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#include "gb_struct_def.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Speed = 1 / Length (in seconds) */
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#define DAC_DECAY_SPEED 20000
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#define DAC_ATTACK_SPEED 20000
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@ -165,6 +161,8 @@ typedef struct {
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GB_sample_callback_t sample_callback;
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GB_sample_t final_sample;
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bool rate_set_in_clocks;
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double interference_volume;
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double interference_highpass;
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@ -186,8 +184,4 @@ void GB_apu_run(GB_gameboy_t *gb);
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void GB_apu_update_cycles_per_sample(GB_gameboy_t *gb);
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void GB_borrow_sgb_border(GB_gameboy_t *gb);
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#ifdef __cplusplus
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}
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#endif
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#endif /* apu_h */
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@ -6,6 +6,10 @@
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#include <stdint.h>
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#include <time.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "gb_struct_def.h"
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#include "apu.h"
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@ -13,6 +17,8 @@
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#define GB_STRUCT_VERSION 13
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#define CGB 0
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#define GB_MODEL_FAMILY_MASK 0xF00
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#define GB_MODEL_DMG_FAMILY 0x000
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#define GB_MODEL_MGB_FAMILY 0x100
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@ -357,7 +363,9 @@ struct GB_gameboy_s {
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bool stopped;
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uint8_t io_registers[0x80];
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GB_UNIT(div);
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uint16_t div_counter;
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uint8_t tima_reload_state;
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GB_apu_t apu;
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GB_apu_output_t apu_output;
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};
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@ -382,4 +390,8 @@ typedef enum {
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GB_DIRECT_ACCESS_IE,
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} GB_direct_access_t;
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#ifdef __cplusplus
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}
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#endif
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#endif /* GB_h */
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@ -10,118 +10,10 @@
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static const unsigned GB_TAC_TRIGGER_BITS[] = {512, 8, 32, 128};
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#ifndef GB_DISABLE_TIMEKEEPING
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static int64_t get_nanoseconds(void)
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{
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#ifndef _WIN32
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struct timeval now;
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gettimeofday(&now, NULL);
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return (now.tv_usec) * 1000 + now.tv_sec * 1000000000L;
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#else
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FILETIME time;
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GetSystemTimeAsFileTime(&time);
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return (((int64_t)time.dwHighDateTime << 32) | time.dwLowDateTime) * 100L;
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#endif
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}
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static void nsleep(uint64_t nanoseconds)
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{
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#ifndef _WIN32
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struct timespec sleep = {0, nanoseconds};
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nanosleep(&sleep, NULL);
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#else
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HANDLE timer;
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LARGE_INTEGER time;
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timer = CreateWaitableTimer(NULL, true, NULL);
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time.QuadPart = -(nanoseconds / 100L);
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SetWaitableTimer(timer, &time, 0, NULL, NULL, false);
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WaitForSingleObject(timer, INFINITE);
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CloseHandle(timer);
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#endif
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}
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bool GB_timing_sync_turbo(GB_gameboy_t *gb)
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{
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if (!gb->turbo_dont_skip) {
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int64_t nanoseconds = get_nanoseconds();
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if (nanoseconds <= gb->last_sync + (1000000000LL * LCDC_PERIOD / GB_get_clock_rate(gb))) {
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return true;
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}
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gb->last_sync = nanoseconds;
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}
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return false;
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}
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void GB_timing_sync(GB_gameboy_t *gb)
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{
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if (gb->turbo) {
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gb->cycles_since_last_sync = 0;
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return;
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}
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/* Prevent syncing if not enough time has passed.*/
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if (gb->cycles_since_last_sync < LCDC_PERIOD / 3) return;
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uint64_t target_nanoseconds = gb->cycles_since_last_sync * 1000000000LL / 2 / GB_get_clock_rate(gb); /* / 2 because we use 8MHz units */
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int64_t nanoseconds = get_nanoseconds();
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int64_t time_to_sleep = target_nanoseconds + gb->last_sync - nanoseconds;
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if (time_to_sleep > 0 && time_to_sleep < LCDC_PERIOD * 1200000000LL / GB_get_clock_rate(gb)) { // +20% to be more forgiving
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nsleep(time_to_sleep);
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gb->last_sync += target_nanoseconds;
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}
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else {
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if (time_to_sleep < 0 && -time_to_sleep < LCDC_PERIOD * 1200000000LL / GB_get_clock_rate(gb)) {
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// We're running a bit too slow, but the difference is small enough,
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// just skip this sync and let it even out
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return;
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}
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gb->last_sync = nanoseconds;
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}
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gb->cycles_since_last_sync = 0;
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if (gb->update_input_hint_callback) {
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gb->update_input_hint_callback(gb);
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}
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}
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#else
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bool GB_timing_sync_turbo(GB_gameboy_t *gb)
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{
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return false;
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}
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void GB_timing_sync(GB_gameboy_t *gb)
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{
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}
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#endif
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#define IR_DECAY 31500
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#define IR_THRESHOLD 19900
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#define IR_MAX IR_THRESHOLD * 2 + IR_DECAY
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static void GB_ir_run(GB_gameboy_t *gb, uint32_t cycles)
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{
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if (gb->model == GB_MODEL_AGB) return;
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if (gb->infrared_input || gb->cart_ir || (gb->io_registers[GB_IO_RP] & 1)) {
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gb->ir_sensor += cycles;
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if (gb->ir_sensor > IR_MAX) {
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gb->ir_sensor = IR_MAX;
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}
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gb->effective_ir_input = gb->ir_sensor >= IR_THRESHOLD && gb->ir_sensor <= IR_THRESHOLD + IR_DECAY;
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}
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else {
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if (gb->ir_sensor <= cycles) {
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gb->ir_sensor = 0;
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}
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else {
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gb->ir_sensor -= cycles;
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}
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gb->effective_ir_input = false;
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}
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}
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static void advance_tima_state_machine(GB_gameboy_t *gb)
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{
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if (gb->tima_reload_state == GB_TIMA_RELOADED) {
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static void GB_timers_run(GB_gameboy_t *gb, uint8_t cycles)
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{
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if (gb->stopped) {
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if (GB_is_cgb(gb)) {
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if (CGB) {
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gb->apu.apu_cycles += 4 << !gb->cgb_double_speed;
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}
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return;
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}
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}
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static void advance_serial(GB_gameboy_t *gb, uint8_t cycles)
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{
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if (gb->printer.command_state || gb->printer.bits_received) {
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gb->printer.idle_time += cycles;
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}
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if (gb->serial_length == 0) {
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gb->serial_cycles += cycles;
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return;
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}
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while (cycles > gb->serial_length) {
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advance_serial(gb, gb->serial_length);
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cycles -= gb->serial_length;
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}
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uint16_t previous_serial_cycles = gb->serial_cycles;
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gb->serial_cycles += cycles;
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if ((gb->serial_cycles & gb->serial_length) != (previous_serial_cycles & gb->serial_length)) {
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gb->serial_count++;
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if (gb->serial_count == 8) {
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gb->serial_length = 0;
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gb->serial_count = 0;
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gb->io_registers[GB_IO_SC] &= ~0x80;
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gb->io_registers[GB_IO_IF] |= 8;
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}
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gb->io_registers[GB_IO_SB] <<= 1;
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if (gb->serial_transfer_bit_end_callback) {
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gb->io_registers[GB_IO_SB] |= gb->serial_transfer_bit_end_callback(gb);
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}
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else {
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gb->io_registers[GB_IO_SB] |= 1;
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}
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if (gb->serial_length) {
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/* Still more bits to send */
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if (gb->serial_transfer_bit_start_callback) {
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gb->serial_transfer_bit_start_callback(gb, gb->io_registers[GB_IO_SB] & 0x80);
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}
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}
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}
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return;
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}
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static void GB_rtc_run(GB_gameboy_t *gb, uint8_t cycles)
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{
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if (gb->cartridge_type->mbc_type != GB_HUC3 && !gb->cartridge_type->has_rtc) return;
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gb->rtc_cycles += cycles;
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time_t current_time = 0;
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switch (gb->rtc_mode) {
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case GB_RTC_MODE_SYNC_TO_HOST:
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// Sync in a 1/32s resolution
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if (gb->rtc_cycles < GB_get_unmultiplied_clock_rate(gb) / 16) return;
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gb->rtc_cycles -= GB_get_unmultiplied_clock_rate(gb) / 16;
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current_time = time(NULL);
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break;
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case GB_RTC_MODE_ACCURATE:
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if (gb->cartridge_type->mbc_type != GB_HUC3 && (gb->rtc_real.high & 0x40)) {
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gb->rtc_cycles -= cycles;
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return;
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}
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if (gb->rtc_cycles < GB_get_unmultiplied_clock_rate(gb) * 2) return;
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gb->rtc_cycles -= GB_get_unmultiplied_clock_rate(gb) * 2;
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current_time = gb->last_rtc_second + 1;
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break;
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}
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if (gb->cartridge_type->mbc_type == GB_HUC3) {
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while (gb->last_rtc_second / 60 < current_time / 60) {
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gb->last_rtc_second += 60;
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gb->huc3_minutes++;
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if (gb->huc3_minutes == 60 * 24) {
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gb->huc3_days++;
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gb->huc3_minutes = 0;
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}
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}
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return;
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}
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bool running = false;
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if (gb->cartridge_type->mbc_type == GB_TPP1) {
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running = gb->tpp1_mr4 & 0x4;
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}
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else {
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running = (gb->rtc_real.high & 0x40) == 0;
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}
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if (running) { /* is timer running? */
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while (gb->last_rtc_second + 60 * 60 * 24 < current_time) {
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gb->last_rtc_second += 60 * 60 * 24;
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if (gb->cartridge_type->mbc_type == GB_TPP1) {
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if (++gb->rtc_real.tpp1.weekday == 7) {
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gb->rtc_real.tpp1.weekday = 0;
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if (++gb->rtc_real.tpp1.weeks == 0) {
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gb->tpp1_mr4 |= 8; /* Overflow bit */
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}
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}
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}
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else if (++gb->rtc_real.days == 0) {
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if (gb->rtc_real.high & 1) { /* Bit 8 of days*/
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gb->rtc_real.high |= 0x80; /* Overflow bit */
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}
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gb->rtc_real.high ^= 1;
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}
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}
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while (gb->last_rtc_second < current_time) {
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gb->last_rtc_second++;
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if (++gb->rtc_real.seconds != 60) continue;
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gb->rtc_real.seconds = 0;
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if (++gb->rtc_real.minutes != 60) continue;
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gb->rtc_real.minutes = 0;
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if (gb->cartridge_type->mbc_type == GB_TPP1) {
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if (++gb->rtc_real.tpp1.hours != 24) continue;
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gb->rtc_real.tpp1.hours = 0;
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if (++gb->rtc_real.tpp1.weekday != 7) continue;
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gb->rtc_real.tpp1.weekday = 0;
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if (++gb->rtc_real.tpp1.weeks == 0) {
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gb->tpp1_mr4 |= 8; /* Overflow bit */
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}
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}
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else {
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if (++gb->rtc_real.hours != 24) continue;
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gb->rtc_real.hours = 0;
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if (++gb->rtc_real.days != 0) continue;
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if (gb->rtc_real.high & 1) { /* Bit 8 of days*/
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gb->rtc_real.high |= 0x80; /* Overflow bit */
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}
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gb->rtc_real.high ^= 1;
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}
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}
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}
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}
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void GB_advance_cycles(GB_gameboy_t *gb, uint8_t cycles)
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{
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gb->apu.pcm_mask[0] = gb->apu.pcm_mask[1] = 0xFF; // Sort of hacky, but too many cross-component interactions to do it right
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// Affected by speed boost
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gb->dma_cycles += cycles;
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GB_timers_run(gb, cycles);
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if (!gb->stopped) {
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advance_serial(gb, cycles); // TODO: Verify what happens in STOP mode
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}
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gb->debugger_ticks += cycles;
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if (!gb->cgb_double_speed) {
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cycles <<= 1;
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}
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// Not affected by speed boost
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if (gb->io_registers[GB_IO_LCDC] & 0x80) {
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gb->double_speed_alignment += cycles;
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}
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gb->hdma_cycles += cycles;
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gb->apu_output.sample_cycles += cycles;
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gb->cycles_since_last_sync += cycles;
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gb->cycles_since_run += cycles;
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gb->rumble_on_cycles += gb->rumble_strength & 3;
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gb->rumble_off_cycles += (gb->rumble_strength & 3) ^ 3;
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if (!gb->stopped) { // TODO: Verify what happens in STOP mode
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GB_dma_run(gb);
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GB_hdma_run(gb);
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}
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GB_apu_run(gb);
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GB_display_run(gb, cycles);
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GB_ir_run(gb, cycles);
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GB_rtc_run(gb, cycles);
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}
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/*
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@ -2,7 +2,6 @@
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#define timing_h
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#include "gb_struct_def.h"
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#ifdef GB_INTERNAL
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void GB_advance_cycles(GB_gameboy_t *gb, uint8_t cycles);
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void GB_emulate_timer_glitch(GB_gameboy_t *gb, uint8_t old_tac, uint8_t new_tac);
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bool GB_timing_sync_turbo(GB_gameboy_t *gb); /* Returns true if should skip frame */
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@ -31,7 +30,6 @@ if ((gb)->unit##_cycles <= 0) {\
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return;\
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}\
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switch ((gb)->unit##_state)
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#endif
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#define GB_STATE(gb, unit, state) case state: goto unit##state
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