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95 lines
2.3 KiB
Plaintext
95 lines
2.3 KiB
Plaintext
//
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// Atari2600.m
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// CLK
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//
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// Created by Thomas Harte on 14/07/2015.
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// Copyright © 2015 Thomas Harte. All rights reserved.
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//
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#import "CSAtari2600.h"
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#import "Atari2600.hpp"
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#import "CSMachine+Subclassing.h"
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@interface CSAtari2600 ()
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- (void)crt:(Outputs::CRT::CRT *)crt didEndBatchOfFrames:(unsigned int)numberOfFrames withUnexpectedVerticalSyncs:(unsigned int)numberOfUnexpectedSyncs;
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@end
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struct CRTDelegate: public Outputs::CRT::Delegate {
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__weak CSAtari2600 *atari2600;
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void crt_did_end_batch_of_frames(Outputs::CRT::CRT *crt, unsigned int number_of_frames, unsigned int number_of_unexpected_vertical_syncs) {
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[atari2600 crt:crt didEndBatchOfFrames:number_of_frames withUnexpectedVerticalSyncs:number_of_unexpected_vertical_syncs];
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}
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};
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@implementation CSAtari2600 {
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Atari2600::Machine _atari2600;
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CRTDelegate _crtDelegate;
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int _frameCount;
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int _hitCount;
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BOOL _didDecideRegion;
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int _batchesReceived;
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}
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- (void)crt:(Outputs::CRT::CRT *)crt didEndBatchOfFrames:(unsigned int)numberOfFrames withUnexpectedVerticalSyncs:(unsigned int)numberOfUnexpectedSyncs {
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if(!_didDecideRegion)
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{
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_batchesReceived++;
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if(_batchesReceived == 2)
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{
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_didDecideRegion = YES;
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if(numberOfUnexpectedSyncs >= numberOfFrames >> 1)
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{
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[self.view performWithGLContext:^{
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_atari2600.switch_region();
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}];
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}
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}
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}
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}
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- (void)runForNumberOfCycles:(int)numberOfCycles {
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@synchronized(self) {
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_atari2600.run_for_cycles(numberOfCycles);
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}
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}
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- (void)drawViewForPixelSize:(CGSize)pixelSize onlyIfDirty:(BOOL)onlyIfDirty {
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_atari2600.get_crt()->draw_frame((unsigned int)pixelSize.width, (unsigned int)pixelSize.height, onlyIfDirty ? true : false);
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}
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- (void)setROM:(NSData *)rom {
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@synchronized(self) {
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_atari2600.set_rom(rom.length, (const uint8_t *)rom.bytes);
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}
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}
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- (void)setState:(BOOL)state forDigitalInput:(Atari2600DigitalInput)digitalInput {
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@synchronized(self) {
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_atari2600.set_digital_input(digitalInput, state ? true : false);
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}
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}
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- (void)setResetLineEnabled:(BOOL)enabled {
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@synchronized(self) {
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_atari2600.set_reset_line(enabled ? true : false);
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}
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}
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- (void)setupOutputWithAspectRatio:(float)aspectRatio {
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@synchronized(self) {
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_atari2600.setup_output(aspectRatio);
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_atari2600.get_crt()->set_delegate(&_crtDelegate);
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_crtDelegate.atari2600 = self;
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}
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}
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- (void)closeOutput {
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@synchronized(self) {
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_atari2600.close_output();
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}
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}
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@end
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