72 lines
2.1 KiB
Objective-C
72 lines
2.1 KiB
Objective-C
#import "GBVisualizerView.h"
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#import "GBPaletteEditorController.h"
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#include <Core/gb.h>
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#define SAMPLE_COUNT 1024
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static NSColor *color_to_effect_color(typeof(GB_PALETTE_DMG.colors[0]) color)
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{
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if (@available(macOS 10.10, *)) {
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double tint = MAX(color.r, MAX(color.g, color.b)) + 64;
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return [NSColor colorWithRed:color.r / tint
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green:color.g / tint
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blue:color.b / tint
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alpha:tint/(255 + 64)];
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}
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return [NSColor colorWithRed:color.r / 255.0
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green:color.g / 255.0
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blue:color.b / 255.0
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alpha:1.0];
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}
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@implementation GBVisualizerView
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{
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GB_sample_t _samples[SAMPLE_COUNT];
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size_t _position;
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}
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- (void)drawRect:(NSRect)dirtyRect
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{
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const GB_palette_t *palette = [GBPaletteEditorController userPalette];
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NSSize size = self.bounds.size;
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[color_to_effect_color(palette->colors[0]) setFill];
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NSRectFill(self.bounds);
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NSBezierPath *line = [NSBezierPath bezierPath];
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[line moveToPoint:NSMakePoint(0, size.height / 2)];
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for (unsigned i = 0; i < SAMPLE_COUNT; i++) {
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GB_sample_t *sample = _samples + ((i + _position) % SAMPLE_COUNT);
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double volume = ((signed)sample->left + (signed)sample->right) / 32768.0;
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[line lineToPoint:NSMakePoint(size.width * (i + 0.5) / SAMPLE_COUNT,
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(volume + 1) * size.height / 2)];
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}
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[line lineToPoint:NSMakePoint(size.width, size.height / 2)];
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[line setLineWidth:1.0];
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[color_to_effect_color(palette->colors[2]) setFill];
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[line fill];
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[color_to_effect_color(palette->colors[1]) setFill];
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NSRectFill(NSMakeRect(0, size.height / 2 - 0.5, size.width, 1));
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[color_to_effect_color(palette->colors[3]) setStroke];
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[line stroke];
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[super drawRect:dirtyRect];
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}
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- (void)addSample:(GB_sample_t *)sample
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{
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_samples[_position++] = *sample;
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if (_position == SAMPLE_COUNT) {
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_position = 0;
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}
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}
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@end
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