86 lines
2.5 KiB
Plaintext
86 lines
2.5 KiB
Plaintext
//
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// NesSystem.mm
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//
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//
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// Created by Selim Mustafaev on 27.09.2023.
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//
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#import "NesSystem.h"
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#import <NesKitCpp.h>
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#import <memory>
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@interface NesSystem()
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@end
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@implementation NesSystem {
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std::unique_ptr<nes::System> _system;
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NSCondition* _condition;
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BOOL _runEmulation;
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}
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- (instancetype)init {
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if(self = [super init]) {
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_system = std::make_unique<nes::System>();
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_condition = [NSCondition new];
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_runEmulation = YES;
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size_t frameBufferSize = nes::Ppu::SCREEN_WIDTH * nes::Ppu::SCREEN_HEIGHT * sizeof(nes::Pixel);
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_system->setNewFrameCallback([frameBufferSize, self](auto frameBuffer) {
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_runEmulation = NO;
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CGImageRelease(_frame);
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CGDataProviderRef dataProvider = CGDataProviderCreateWithData(NULL, (void*)frameBuffer, frameBufferSize, NULL);
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CGColorSpaceRef colorspace = CGColorSpaceCreateDeviceRGB();
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CGImageRef image = CGImageCreate(nes::Ppu::SCREEN_WIDTH,
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nes::Ppu::SCREEN_HEIGHT,
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8,
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sizeof(nes::Pixel)*8,
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nes::Ppu::SCREEN_WIDTH * sizeof(nes::Pixel),
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colorspace,
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kCGImageAlphaPremultipliedLast,
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dataProvider,
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NULL,
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false,
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kCGRenderingIntentDefault);
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CGDataProviderRelease(dataProvider);
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CGColorSpaceRelease(colorspace);
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dispatch_async(dispatch_get_main_queue(), ^{
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_frame = image;
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});
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});
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}
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return self;
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}
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- (void)runRom:(NSURL*)url {
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_system->insertCartridge([url fileSystemRepresentation]);
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dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
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while(TRUE) {
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[_condition lock];
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while (!_runEmulation) {
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[_condition wait];
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}
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while(_runEmulation) {
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_system->tick();
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}
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[_condition unlock];
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}
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});
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}
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- (void)stepToNextFrame {
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[_condition lock];
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_runEmulation = YES;
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[_condition signal];
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[_condition unlock];
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}
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@end
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