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lib.rs
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lib.rs
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extern crate rustual_boy_core;
#[macro_use]
extern crate serde_derive;
extern crate serde;
extern crate serde_bytes;
extern crate bincode;
extern crate lz4;
pub mod version1;
mod serde_ibytes;
use lz4::{EncoderBuilder, Decoder};
use rustual_boy_core::rom::*;
use rustual_boy_core::timer::*;
use rustual_boy_core::vip::*;
use rustual_boy_core::virtual_boy::*;
use rustual_boy_core::vsu::*;
use rustual_boy_core::wram::*;
#[derive(Clone, Debug, Deserialize, Eq, PartialEq, Serialize)]
pub enum VersionedState {
Version1(version1::State),
}
pub type State = version1::State;
// TODO: Proper display impl
#[derive(Debug)]
pub enum ApplyError {
RomError(RomError),
}
pub fn serialize(state: State) -> Result<Vec<u8>, String> {
let versioned_state = VersionedState::Version1(state);
let encoded = Vec::with_capacity(512 * 1024);
let mut encoder = EncoderBuilder::new()
.level(2)
.block_size(lz4::BlockSize::Max1MB)
.build(encoded)
.map_err(|e| format!("Couldn't build lz4 encoder: {}", e))?;
bincode::serialize_into(&mut encoder, &versioned_state).map_err(|e| format!("Couldn't save state: {}", e))?;
let (encoded, result) = encoder.finish();
if let Err(e) = result {
return Err(format!("Couldn't finish lz4 encoding: {}", e));
}
Ok(encoded)
}
pub fn deserialize(encoded: &[u8]) -> Result<State, String> {
let decoder = Decoder::new(encoded).map_err(|e| format!("Couldn't build lz4 decoder: {}", e))?;
let versioned_state = bincode::deserialize_from(decoder).map_err(|e| format!("Couldn't deserialize state: {}", e))?;
Ok(match versioned_state {
VersionedState::Version1(state) => state,
})
}
pub fn get_state(vb: &VirtualBoy) -> State {
State {
interconnect: version1::InterconnectState {
rom: vb.interconnect.rom.as_slice().to_vec().into_boxed_slice(),
wram: vb.interconnect.wram.as_slice().to_vec().into_boxed_slice(),
sram: version1::SramState {
bytes: vb.interconnect.sram.as_slice().to_vec().into_boxed_slice(),
size: vb.interconnect.sram.size(),
},
vip: version1::VipState {
vram: vb.interconnect.vip.vram_slice().to_vec().into_boxed_slice(),
display_state: match vb.interconnect.vip.display_state {
DisplayState::Idle => version1::DisplayStateState::Idle,
DisplayState::LeftFramebuffer => version1::DisplayStateState::LeftFramebuffer,
DisplayState::RightFramebuffer => version1::DisplayStateState::RightFramebuffer,
DisplayState::Finished => version1::DisplayStateState::Finished,
},
drawing_state: match vb.interconnect.vip.drawing_state {
DrawingState::Idle => version1::DrawingStateState::Idle,
DrawingState::Drawing => version1::DrawingStateState::Drawing,
},
reg_intpnd_lfbend: vb.interconnect.vip.reg_intpnd_lfbend,
reg_intpnd_rfbend: vb.interconnect.vip.reg_intpnd_rfbend,
reg_intpnd_gamestart: vb.interconnect.vip.reg_intpnd_gamestart,
reg_intpnd_framestart: vb.interconnect.vip.reg_intpnd_framestart,
reg_intpnd_sbhit: vb.interconnect.vip.reg_intpnd_sbhit,
reg_intpnd_xpend: vb.interconnect.vip.reg_intpnd_xpend,
reg_intenb_lfbend: vb.interconnect.vip.reg_intenb_lfbend,
reg_intenb_rfbend: vb.interconnect.vip.reg_intenb_rfbend,
reg_intenb_gamestart: vb.interconnect.vip.reg_intenb_gamestart,
reg_intenb_framestart: vb.interconnect.vip.reg_intenb_framestart,
reg_intenb_sbhit: vb.interconnect.vip.reg_intenb_sbhit,
reg_intenb_xpend: vb.interconnect.vip.reg_intenb_xpend,
reg_dpctrl_disp: vb.interconnect.vip.reg_dpctrl_disp,
reg_dpctrl_synce: vb.interconnect.vip.reg_dpctrl_synce,
reg_xpctrl_xpen: vb.interconnect.vip.reg_xpctrl_xpen,
reg_xpctrl_sbcount: vb.interconnect.vip.reg_xpctrl_sbcount,
reg_xpctrl_sbcmp: vb.interconnect.vip.reg_xpctrl_sbcmp,
reg_xpctrl_sbout: vb.interconnect.vip.reg_xpctrl_sbout,
reg_frmcyc: vb.interconnect.vip.reg_frmcyc,
reg_brta: vb.interconnect.vip.reg_brta,
reg_brtb: vb.interconnect.vip.reg_brtb,
reg_brtc: vb.interconnect.vip.reg_brtc,
reg_spt0: vb.interconnect.vip.reg_spt0,
reg_spt1: vb.interconnect.vip.reg_spt1,
reg_spt2: vb.interconnect.vip.reg_spt2,
reg_spt3: vb.interconnect.vip.reg_spt3,
reg_gplt0: vb.interconnect.vip.reg_gplt0,
reg_gplt1: vb.interconnect.vip.reg_gplt1,
reg_gplt2: vb.interconnect.vip.reg_gplt2,
reg_gplt3: vb.interconnect.vip.reg_gplt3,
reg_jplt0: vb.interconnect.vip.reg_jplt0,
reg_jplt1: vb.interconnect.vip.reg_jplt1,
reg_jplt2: vb.interconnect.vip.reg_jplt2,
reg_jplt3: vb.interconnect.vip.reg_jplt3,
reg_bkcol: vb.interconnect.vip.reg_bkcol,
display_frame_eighth_clock_counter: vb.interconnect.vip.display_frame_eighth_clock_counter,
display_frame_eighth_counter: vb.interconnect.vip.display_frame_eighth_counter,
drawing_block_counter: vb.interconnect.vip.drawing_block_counter,
drawing_sbout_counter: vb.interconnect.vip.drawing_sbout_counter,
fclk: vb.interconnect.vip.fclk,
display_first_framebuffers: vb.interconnect.vip.display_first_framebuffers,
last_bkcol: vb.interconnect.vip.last_bkcol,
},
vsu: version1::VsuState {
waveform_data: vb.interconnect.vsu.waveform_data.clone(),
mod_data: vb.interconnect.vsu.mod_data.clone(),
sound1: get_standard_sound_state(&vb.interconnect.vsu.sound1),
sound2: get_standard_sound_state(&vb.interconnect.vsu.sound2),
sound3: get_standard_sound_state(&vb.interconnect.vsu.sound3),
sound4: get_standard_sound_state(&vb.interconnect.vsu.sound4),
sound5: version1::SweepModSoundState {
reg_int: get_int_reg_state(&vb.interconnect.vsu.sound5.reg_int),
reg_lrv: get_lrv_reg_state(&vb.interconnect.vsu.sound5.reg_lrv),
fql: vb.interconnect.vsu.sound5.fql,
fqh: vb.interconnect.vsu.sound5.fqh,
frequency_low: vb.interconnect.vsu.sound5.frequency_low,
frequency_high: vb.interconnect.vsu.sound5.frequency_high,
next_frequency_low: vb.interconnect.vsu.sound5.next_frequency_low,
next_frequency_high: vb.interconnect.vsu.sound5.next_frequency_high,
envelope: get_envelope_state(&vb.interconnect.vsu.sound5.envelope),
reg_sweep_mod_enable: vb.interconnect.vsu.sound5.reg_sweep_mod_enable,
reg_mod_repeat: vb.interconnect.vsu.sound5.reg_mod_repeat,
reg_function: vb.interconnect.vsu.sound5.reg_function,
reg_sweep_mod_base_interval: vb.interconnect.vsu.sound5.reg_sweep_mod_base_interval,
reg_sweep_mod_interval: vb.interconnect.vsu.sound5.reg_sweep_mod_interval,
reg_sweep_direction: vb.interconnect.vsu.sound5.reg_sweep_direction,
reg_sweep_shift_amount: vb.interconnect.vsu.sound5.reg_sweep_shift_amount,
ram: vb.interconnect.vsu.sound5.ram,
frequency_counter: vb.interconnect.vsu.sound5.frequency_counter,
phase: vb.interconnect.vsu.sound5.phase,
sweep_mod_counter: vb.interconnect.vsu.sound5.sweep_mod_counter,
mod_phase: vb.interconnect.vsu.sound5.mod_phase,
},
sound6: version1::NoiseSoundState {
reg_int: get_int_reg_state(&vb.interconnect.vsu.sound6.reg_int),
reg_lrv: get_lrv_reg_state(&vb.interconnect.vsu.sound6.reg_lrv),
fql: vb.interconnect.vsu.sound6.fql,
fqh: vb.interconnect.vsu.sound6.fqh,
envelope: get_envelope_state(&vb.interconnect.vsu.sound6.envelope),
reg_noise_control: vb.interconnect.vsu.sound6.reg_noise_control,
frequency_counter: vb.interconnect.vsu.sound6.frequency_counter,
shift: vb.interconnect.vsu.sound6.shift,
output: vb.interconnect.vsu.sound6.output,
},
duration_clock_counter: vb.interconnect.vsu.duration_clock_counter,
envelope_clock_counter: vb.interconnect.vsu.envelope_clock_counter,
frequency_clock_counter: vb.interconnect.vsu.frequency_clock_counter,
sweep_mod_clock_counter: vb.interconnect.vsu.sweep_mod_clock_counter,
noise_clock_counter: vb.interconnect.vsu.noise_clock_counter,
sample_clock_counter: vb.interconnect.vsu.sample_clock_counter,
},
timer: version1::TimerState {
t_clk_sel: match vb.interconnect.timer.t_clk_sel {
Interval::Large => version1::IntervalState::Large,
Interval::Small => version1::IntervalState::Small,
},
tim_z_int: vb.interconnect.timer.tim_z_int,
z_stat: vb.interconnect.timer.z_stat,
t_enb: vb.interconnect.timer.t_enb,
reload: vb.interconnect.timer.reload,
counter: vb.interconnect.timer.counter,
tick_counter: vb.interconnect.timer.tick_counter,
zero_interrupt: vb.interconnect.timer.zero_interrupt,
},
game_pad: version1::GamePadState {
a_pressed: vb.interconnect.game_pad.a_pressed,
b_pressed: vb.interconnect.game_pad.b_pressed,
start_pressed: vb.interconnect.game_pad.start_pressed,
select_pressed: vb.interconnect.game_pad.select_pressed,
l_pressed: vb.interconnect.game_pad.l_pressed,
r_pressed: vb.interconnect.game_pad.r_pressed,
left_d_pad_up_pressed: vb.interconnect.game_pad.left_d_pad_up_pressed,
left_d_pad_down_pressed: vb.interconnect.game_pad.left_d_pad_down_pressed,
left_d_pad_left_pressed: vb.interconnect.game_pad.left_d_pad_left_pressed,
left_d_pad_right_pressed: vb.interconnect.game_pad.left_d_pad_right_pressed,
right_d_pad_up_pressed: vb.interconnect.game_pad.right_d_pad_up_pressed,
right_d_pad_down_pressed: vb.interconnect.game_pad.right_d_pad_down_pressed,
right_d_pad_left_pressed: vb.interconnect.game_pad.right_d_pad_left_pressed,
right_d_pad_right_pressed: vb.interconnect.game_pad.right_d_pad_right_pressed,
},
com_port: version1::ComPortState {
cdtr: vb.interconnect.com_port.cdtr,
cdrr: vb.interconnect.com_port.cdrr,
c_stat: vb.interconnect.com_port.c_stat,
transfer_bit_index: vb.interconnect.com_port.transfer_bit_index,
},
},
cpu: version1::V810State {
reg_pc: vb.cpu.reg_pc,
reg_gpr: vb.cpu.reg_gpr.clone(),
reg_eipc: vb.cpu.reg_eipc,
reg_eipsw: vb.cpu.reg_eipsw,
reg_ecr: vb.cpu.reg_ecr,
reg_fepc: vb.cpu.reg_fepc,
reg_fepsw: vb.cpu.reg_fepsw,
psw_zero: vb.cpu.psw_zero,
psw_sign: vb.cpu.psw_sign,
psw_overflow: vb.cpu.psw_overflow,
psw_carry: vb.cpu.psw_carry,
psw_fp_precision_degredation: vb.cpu.psw_fp_precision_degredation,
psw_fp_underflow: vb.cpu.psw_fp_underflow,
psw_fp_overflow: vb.cpu.psw_fp_overflow,
psw_fp_zero_division: vb.cpu.psw_fp_zero_division,
psw_fp_invalid_operation: vb.cpu.psw_fp_invalid_operation,
psw_fp_reserved_operand: vb.cpu.psw_fp_reserved_operand,
psw_interrupt_disable: vb.cpu.psw_interrupt_disable,
psw_address_trap_enable: vb.cpu.psw_address_trap_enable,
psw_exception_pending: vb.cpu.psw_exception_pending,
psw_nmi_pending: vb.cpu.psw_nmi_pending,
psw_interrupt_mask_level: vb.cpu.psw_interrupt_mask_level,
is_halted: vb.cpu.is_halted,
cache: version1::CacheState {
hits: vb.cpu.cache.hits,
misses: vb.cpu.cache.misses,
is_enabled: vb.cpu.cache.is_enabled,
entries: vb.cpu.cache.entries.iter().map(|entry| {
version1::CacheEntryState {
tag: entry.tag,
base_addr: entry.base_addr,
subblock_valid: entry.subblock_valid.clone(),
}
}).collect::<Vec<_>>().into_boxed_slice(),
},
watchpoints: vb.cpu.watchpoints.clone(),
},
}
}
fn get_standard_sound_state(sound: &StandardSound) -> version1::StandardSoundState {
version1::StandardSoundState {
reg_int: get_int_reg_state(&sound.reg_int),
reg_lrv: get_lrv_reg_state(&sound.reg_lrv),
fql: sound.fql,
fqh: sound.fqh,
envelope: get_envelope_state(&sound.envelope),
ram: sound.ram,
frequency_counter: sound.frequency_counter,
phase: sound.phase,
}
}
fn get_int_reg_state(int_reg: &IntReg) -> version1::IntRegState {
version1::IntRegState {
output_enable: int_reg.output_enable,
interval_data: int_reg.interval_data,
interval_counter_setting_values: int_reg.interval_counter_setting_values,
interval_counter: int_reg.interval_counter,
}
}
fn get_lrv_reg_state(lrv_reg: &LrvReg) -> version1::LrvRegState {
version1::LrvRegState {
left: lrv_reg.left,
right: lrv_reg.right,
}
}
fn get_envelope_state(envelope: &Envelope) -> version1::EnvelopeState {
version1::EnvelopeState {
reg_data_reload: envelope.reg_data_reload,
reg_data_direction: envelope.reg_data_direction,
reg_data_step_interval: envelope.reg_data_step_interval,
reg_control_repeat: envelope.reg_control_repeat,
reg_control_enable: envelope.reg_control_enable,
level: envelope.level,
envelope_counter: envelope.envelope_counter,
}
}
pub fn apply(vb: &mut VirtualBoy, state: &State) -> Result<(), ApplyError> {
// TODO: Full state!!!!!!!
vb.interconnect.rom = Rom::from_bytes(&state.interconnect.rom).map_err(|e| ApplyError::RomError(e))?;
vb.interconnect.wram = Wram::from_bytes(&state.interconnect.wram);
Ok(())
}