Printer support in Cocoa

Cocoa/Document.h

@@ -25,6 +25,9 @@
 @property (strong) IBOutlet NSTextField *vramStatusLabel;
 @property (strong) IBOutlet NSTableView *paletteTableView;
 @property (strong) IBOutlet NSTableView *spritesTableView;
+@property (strong) IBOutlet NSPanel *printerFeedWindow;
+@property (strong) IBOutlet NSImageView *feedImageView;
+@property (strong) IBOutlet NSButton *feedSaveButton;
 
 -(uint8_t) readMemory:(uint16_t) addr;
 -(void) writeMemory:(uint16_t) addr value:(uint8_t)value;

Cocoa/Document.m

@@ -37,6 +37,9 @@
     uint16_t oamCount;
     uint8_t oamHeight;
     bool oamUpdating;
+    
+    NSMutableData *currentPrinterImageData;
+    enum {GBAccessoryNone, GBAccessoryPrinter} accessory;
 }
 
 @property GBAudioClient *audioClient;
@@ -46,6 +49,9 @@
 - (const char *) getAsyncDebuggerInput;
 - (void) cameraRequestUpdate;
 - (uint8_t) cameraGetPixelAtX:(uint8_t)x andY:(uint8_t)y;
+- (void) printImage:(uint32_t *)image height:(unsigned) height
+          topMargin:(unsigned) topMargin bottomMargin: (unsigned) bottomMargin
+           exposure:(unsigned) exposure;
 @end
 
 static void vblank(GB_gameboy_t *gb)
@@ -75,7 +81,7 @@ static char *asyncConsoleInput(GB_gameboy_t *gb)
 
 static uint32_t rgbEncode(GB_gameboy_t *gb, uint8_t r, uint8_t g, uint8_t b)
 {
-    return (r << 0) | (g << 8) | (b << 16);
+    return (r << 0) | (g << 8) | (b << 16) | 0xFF000000;
 }
 
 static void cameraRequestUpdate(GB_gameboy_t *gb)
@@ -90,6 +96,13 @@ static uint8_t cameraGetPixel(GB_gameboy_t *gb, uint8_t x, uint8_t y)
     return [self cameraGetPixelAtX:x andY:y];
 }
 
+static void printImage(GB_gameboy_t *gb, uint32_t *image, uint8_t height,
+                       uint8_t top_margin, uint8_t bottom_margin, uint8_t exposure)
+{
+    Document *self = (__bridge Document *)(gb->user_data);
+    [self printImage:image height:height topMargin:top_margin bottomMargin:bottom_margin exposure:exposure];
+}
+
 @implementation Document
 {
     GB_gameboy_t gb;
@@ -132,6 +145,7 @@ static uint8_t cameraGetPixel(GB_gameboy_t *gb, uint8_t x, uint8_t y)
 
 - (void) initCommon
 {
+    gb.user_data = (__bridge void *)(self);
     GB_set_vblank_callback(&gb, (GB_vblank_callback_t) vblank);
     GB_set_log_callback(&gb, (GB_log_callback_t) consoleLog);
     GB_set_input_callback(&gb, (GB_input_callback_t) consoleInput);
@@ -139,7 +153,6 @@ static uint8_t cameraGetPixel(GB_gameboy_t *gb, uint8_t x, uint8_t y)
     GB_set_rgb_encode_callback(&gb, rgbEncode);
     GB_set_camera_get_pixel_callback(&gb, cameraGetPixel);
     GB_set_camera_update_request_callback(&gb, cameraRequestUpdate);
-    gb.user_data = (__bridge void *)(self);
 }
 
 - (void) vblank
@@ -271,6 +284,14 @@ static uint8_t cameraGetPixel(GB_gameboy_t *gb, uint8_t x, uint8_t y)
                                    window_frame.size.height);
     [self.mainWindow setFrame:window_frame display:YES];
     self.vramStatusLabel.cell.backgroundStyle = NSBackgroundStyleRaised;
+    
+    
+    [self.feedSaveButton removeFromSuperview];
+    /* contentView.superview.subviews.lastObject is the titlebar view */
+    NSView *titleView = self.printerFeedWindow.contentView.superview.subviews.lastObject;
+    [titleView addSubview: self.feedSaveButton];
+    self.feedSaveButton.frame = (NSRect){{268, 2}, {48, 17}};
+    
     [self start];
 
 }
@@ -400,6 +421,12 @@ static uint8_t cameraGetPixel(GB_gameboy_t *gb, uint8_t x, uint8_t y)
             return false;
         }
     }
+    else if ([anItem action] == @selector(disconnectAllAccessories:)) {
+        [(NSMenuItem*)anItem setState:accessory == GBAccessoryNone];
+    }
+    else if ([anItem action] == @selector(connectPrinter:)) {
+        [(NSMenuItem*)anItem setState:accessory == GBAccessoryPrinter];
+    }
     return [super validateUserInterfaceItem:anItem];
 }
 
@@ -1073,4 +1100,71 @@ static uint8_t cameraGetPixel(GB_gameboy_t *gb, uint8_t x, uint8_t y)
 {
     [self.vramWindow makeKeyAndOrderFront:sender];
 }
+
+- (void) printImage:(uint32_t *)imageBytes height:(unsigned) height
+          topMargin:(unsigned) topMargin bottomMargin: (unsigned) bottomMargin
+           exposure:(unsigned) exposure
+{
+    uint32_t paddedImage[160 * (topMargin + height + bottomMargin)];
+    memset(paddedImage, 0xFF, sizeof(paddedImage));
+    memcpy(paddedImage + (160 * topMargin), imageBytes, 160 * height * sizeof(imageBytes[0]));
+    if (!self.printerFeedWindow.isVisible) {
+        currentPrinterImageData = [[NSMutableData alloc] init];
+    }
+    [currentPrinterImageData appendBytes:paddedImage length:sizeof(paddedImage)];
+    self.feedImageView.image = [Document imageFromData:currentPrinterImageData
+                                                 width:160
+                                                height:currentPrinterImageData.length / 160 / sizeof(imageBytes[0])
+                                                 scale:2.0];
+    /* UI related code must run on main thread. */
+    dispatch_async(dispatch_get_main_queue(), ^{
+        NSRect frame = self.printerFeedWindow.frame;
+        frame.size = self.feedImageView.image.size;
+        frame.size.height += self.printerFeedWindow.frame.size.height - self.printerFeedWindow.contentView.frame.size.height;
+        [self.printerFeedWindow setMaxSize:frame.size];
+        [self.printerFeedWindow setFrame:frame display:NO animate: self.printerFeedWindow.isVisible];
+        [self.printerFeedWindow orderFront:NULL];
+    });
+    
+}
+- (IBAction)savePrinterFeed:(id)sender
+{
+    bool shouldResume = running;
+    [self stop];
+    NSSavePanel * savePanel = [NSSavePanel savePanel];
+    [savePanel setAllowedFileTypes:@[@"png"]];
+    [savePanel beginSheetModalForWindow:self.printerFeedWindow completionHandler:^(NSInteger result){
+        if (result == NSFileHandlingPanelOKButton) {
+            [savePanel orderOut:self];
+            CGImageRef cgRef = [self.feedImageView.image CGImageForProposedRect:NULL
+                                                                        context:nil
+                                                                          hints:nil];
+            NSBitmapImageRep *imageRep = [[NSBitmapImageRep alloc] initWithCGImage:cgRef];
+            [imageRep setSize:(NSSize){160, self.feedImageView.image.size.height / 2}];
+            NSData *data = [imageRep representationUsingType:NSPNGFileType properties:@{}];
+            [data writeToURL:savePanel.URL atomically:NO];
+            [self.printerFeedWindow setIsVisible:NO];
+        }
+        if (shouldResume) {
+            [self start];
+        }
+    }];
+}
+
+- (IBAction)disconnectAllAccessories:(id)sender
+{
+    [self performAtomicBlock:^{
+        accessory = GBAccessoryNone;
+        GB_disconnect_serial(&gb);
+    }];
+}
+
+- (IBAction)connectPrinter:(id)sender
+{
+    [self performAtomicBlock:^{
+            accessory = GBAccessoryPrinter;
+        GB_connect_printer(&gb, printImage);
+    }];
+}
+
 @end

Cocoa/Document.xib

@@ -10,6 +10,8 @@
                 <outlet property="consoleInput" destination="l22-S8-uji" id="Heu-am-YgB"/>
                 <outlet property="consoleOutput" destination="doS-dM-hnl" id="Gn5-ju-Wb0"/>
                 <outlet property="consoleWindow" destination="21F-Ah-yHX" id="eQ4-ug-LsT"/>
+                <outlet property="feedImageView" destination="Ar0-nN-eop" id="wHa-St-o4G"/>
+                <outlet property="feedSaveButton" destination="RLc-0I-sYZ" id="Yy9-dG-xXY"/>
                 <outlet property="gridButton" destination="fL6-2S-Rgd" id="jtV-jh-GHC"/>
                 <outlet property="mainWindow" destination="xOd-HO-29H" id="h8M-YB-vcC"/>
                 <outlet property="memoryBankInput" destination="rdV-q6-hc6" id="KBx-9T-2mX"/>
@@ -17,6 +19,7 @@
                 <outlet property="memoryView" destination="8hr-8o-3rN" id="fF0-rh-8ND"/>
                 <outlet property="memoryWindow" destination="mRm-dL-mCj" id="VPR-lu-vtI"/>
                 <outlet property="paletteTableView" destination="gfC-d3-dmq" id="fTC-eL-Qg3"/>
+                <outlet property="printerFeedWindow" destination="NdE-0B-WCf" id="yVK-cS-NOJ"/>
                 <outlet property="spritesTableView" destination="TOc-XJ-w9w" id="O4R-4Z-9hU"/>
                 <outlet property="tilemapImageView" destination="LlK-tV-bjv" id="nSY-Xd-BjZ"/>
                 <outlet property="tilemapMapButton" destination="YIJ-Qc-SIZ" id="BB7-Gg-7XP"/>
@@ -32,7 +35,7 @@
         </customObject>
         <customObject id="-1" userLabel="First Responder" customClass="FirstResponder"/>
         <customObject id="-3" userLabel="Application" customClass="NSObject"/>
-        <window title="Window" allowsToolTipsWhenApplicationIsInactive="NO" autorecalculatesKeyViewLoop="NO" releasedWhenClosed="NO" visibleAtLaunch="NO" animationBehavior="default" id="xOd-HO-29H" userLabel="Window">
+        <window title="Window" allowsToolTipsWhenApplicationIsInactive="NO" autorecalculatesKeyViewLoop="NO" oneShot="NO" releasedWhenClosed="NO" visibleAtLaunch="NO" animationBehavior="default" id="xOd-HO-29H" userLabel="Window">
             <windowStyleMask key="styleMask" titled="YES" closable="YES" miniaturizable="YES" resizable="YES"/>
             <windowCollectionBehavior key="collectionBehavior" fullScreenPrimary="YES"/>
             <windowPositionMask key="initialPositionMask" leftStrut="YES" rightStrut="YES" topStrut="YES" bottomStrut="YES"/>
@@ -679,5 +682,35 @@
             <contentBorderThickness minY="24"/>
             <point key="canvasLocation" x="182" y="760"/>
         </window>
+        <window title="Printer Feed" allowsToolTipsWhenApplicationIsInactive="NO" autorecalculatesKeyViewLoop="NO" hidesOnDeactivate="YES" oneShot="NO" releasedWhenClosed="NO" showsToolbarButton="NO" visibleAtLaunch="NO" animationBehavior="default" id="NdE-0B-WCf" customClass="NSPanel">
+            <windowStyleMask key="styleMask" titled="YES" closable="YES"/>
+            <windowPositionMask key="initialPositionMask" leftStrut="YES" rightStrut="YES" topStrut="YES" bottomStrut="YES"/>
+            <rect key="contentRect" x="272" y="172" width="320" height="288"/>
+            <rect key="screenRect" x="0.0" y="0.0" width="2560" height="1417"/>
+            <view key="contentView" id="RRS-aa-bPT">
+                <rect key="frame" x="0.0" y="0.0" width="320" height="288"/>
+                <autoresizingMask key="autoresizingMask"/>
+                <subviews>
+                    <imageView horizontalHuggingPriority="251" verticalHuggingPriority="251" id="Ar0-nN-eop" customClass="GBImageView">
+                        <rect key="frame" x="0.0" y="0.0" width="320" height="288"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <imageCell key="cell" refusesFirstResponder="YES" alignment="left" imageAlignment="topLeft" id="sff-hk-4nM"/>
+                    </imageView>
+                </subviews>
+            </view>
+            <point key="canvasLocation" x="-159" y="356"/>
+        </window>
+        <button verticalHuggingPriority="750" id="RLc-0I-sYZ">
+            <rect key="frame" x="0.0" y="0.0" width="48" height="25"/>
+            <autoresizingMask key="autoresizingMask" flexibleMinX="YES" flexibleMinY="YES"/>
+            <buttonCell key="cell" type="roundTextured" title="Save" bezelStyle="texturedRounded" alignment="center" controlSize="mini" borderStyle="border" imageScaling="proportionallyDown" inset="2" id="shw-MJ-B3T">
+                <behavior key="behavior" pushIn="YES" lightByBackground="YES" lightByGray="YES"/>
+                <font key="font" metaFont="miniSystem"/>
+            </buttonCell>
+            <connections>
+                <action selector="savePrinterFeed:" target="-2" id="Y3g-fU-2te"/>
+            </connections>
+            <point key="canvasLocation" x="-507" y="397"/>
+        </button>
     </objects>
 </document>

Cocoa/MainMenu.xib

@@ -339,6 +339,25 @@
                         </items>
                     </menu>
                 </menuItem>
+                <menuItem title="Connectivity" id="IcW-ZC-4wb">
+                    <modifierMask key="keyEquivalentModifierMask"/>
+                    <menu key="submenu" title="Connectivity" id="BDM-Cv-BOm">
+                        <items>
+                            <menuItem title="None" id="SiH-Q4-OBY">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <connections>
+                                    <action selector="disconnectAllAccessories:" target="-1" id="5hY-9U-nRn"/>
+                                </connections>
+                            </menuItem>
+                            <menuItem title="GameBoy Printer" id="zHR-Ha-pOR">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <connections>
+                                    <action selector="connectPrinter:" target="-1" id="tl1-CL-tAw"/>
+                                </connections>
+                            </menuItem>
+                        </items>
+                    </menu>
+                </menuItem>
                 <menuItem title="Developer" id="IwX-DJ-dBk">
                     <modifierMask key="keyEquivalentModifierMask"/>
                     <menu key="submenu" title="Developer" id="UVb-cc-at0">