1pub mod cartridge;
2pub mod debug;
3pub mod memory;
4pub(crate) mod svp;
5pub mod vdp;
6pub mod ym2612;
7
8use crate::vdp::{DarkenColors, Vdp, VdpConfig};
9use genesis_config::GenesisEmulatorConfig;
10use jgenesis_common::frontend::TimingMode;
11
12pub const NTSC_GENESIS_MCLK_FREQUENCY: f64 = 53_693_175.0;
13pub const PAL_GENESIS_MCLK_FREQUENCY: f64 = 53_203_424.0;
14
15pub const SPRITE_LIMITS_MODAL_MESSAGE: &str = "Sprite limits are disabled; may cause glitches";
16
17pub trait GenesisEmulatorConfigExt {
18    #[must_use]
19    fn to_vdp_config(&self, s32x_present: bool) -> VdpConfig;
20}
21
22impl GenesisEmulatorConfigExt for GenesisEmulatorConfig {
23    fn to_vdp_config(&self, s32x_present: bool) -> VdpConfig {
24        VdpConfig {
25            enforce_sprite_limits: !self.remove_sprite_limits,
26            non_linear_color_scale: self.non_linear_color_scale,
27            deinterlace: self.deinterlace,
28            render_vertical_border: self.render_vertical_border,
29            render_horizontal_border: self.render_horizontal_border,
30            plane_a_enabled: self.plane_a_enabled,
31            plane_b_enabled: self.plane_b_enabled,
32            sprites_enabled: self.sprites_enabled,
33            window_enabled: self.window_enabled,
34            color_adjustment: if s32x_present && self.sega_32x.darken_genesis_colors {
35                DarkenColors::Yes
36            } else {
37                DarkenColors::No
38            },
39        }
40    }
41}
42
43#[inline]
44#[must_use]
45pub fn target_framerate(vdp: &Vdp, timing_mode: TimingMode) -> f64 {
46    let mclk_frequency = match timing_mode {
47        TimingMode::Ntsc => NTSC_GENESIS_MCLK_FREQUENCY,
48        TimingMode::Pal => PAL_GENESIS_MCLK_FREQUENCY,
49    };
50
51    mclk_frequency / (vdp::MCLK_CYCLES_PER_SCANLINE as f64) / vdp.average_scanlines_per_frame()
52}