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cog/Window/AUPlayerView.m

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//
// AUPlayerView.m
// Output
//
// Created by Christopher Snowhill on 1/29/16.
// Copyright © 2016-2022 Christopher Snowhill. All rights reserved.
//
#import <Foundation/Foundation.h>
#import <AudioUnit/AUCocoaUIView.h>
#import <CoreAudioKit/AUGenericView.h>
#import "AUPlayerView.h"
#import "json.h"
static NSString * equalizerGenre = @"";
static const NSString * equalizerDefaultGenre = @"Flat";
static NSArray * equalizer_presets_processed = nil;
static NSDictionary * equalizer_presets_by_name = nil;
static json_value * equalizer_presets = NULL;
static const float winamp_equalizer_bands[10] = { 70, 180, 320, 600, 1000, 3000, 6000, 12000, 14000, 16000 };
static const NSString* winamp_equalizer_items[] = { @"name", @"hz70", @"hz180", @"hz320", @"hz600", @"hz1000", @"hz3000", @"hz6000", @"hz12000", @"hz14000", @"hz16000", @"preamp" };
static const float apple_equalizer_bands_31[31] = { 20, 25, 31.5, 40, 50, 63, 80, 100, 125, 160, 200, 250, 315, 400, 500, 630, 800, 1000, 1200, 1600, 2000, 2500, 3100, 4000, 5000, 6300, 8000, 10000, 12000, 16000, 20000 };
static const float apple_equalizer_bands_10[10] = { 32, 64, 128, 256, 512, 1000, 2000, 4000, 8000, 16000 };
static inline float quadra(float *p, float frac) { return (((((((((p[0] + p[2]) * 0.5) - p[1]) * frac) * 0.5) + p[1]) - ((p[2] + p[0] + (p[0] * 2.0)) / 2.0)) * frac) * 2.0) + p[0]; }
static inline float interpolatePoint(NSDictionary * preset, float freqTarget) {
// predict extra bands! lpc was too broken, so use quadratic interpolation!
if (freqTarget <= winamp_equalizer_bands[0]) {
float work[14];
float work_freq[14];
for (unsigned int i = 0; i < 10; ++i) {
work[9 - i] = [[preset objectForKey:winamp_equalizer_items[1 + i]] floatValue];
work_freq[9 - i] = winamp_equalizer_bands[i];
}
for (unsigned int i = 10; i < 14; ++i) {
work[i] = quadra(work + i - 3, 0.94);
work_freq[i] = quadra(work_freq + i - 3, 0.94);
}
for (unsigned int i = 0; i < 13; ++i) {
if (freqTarget >= work_freq[13 - i] &&
freqTarget < work_freq[12 - i]) {
float freqLow = work_freq[13 - i];
float freqHigh = work_freq[12 - i];
float valueLow = work[13 - i];
float valueHigh = work[12 - i];
float delta = (freqTarget - freqLow) / (freqHigh - freqLow);
return valueLow + (valueHigh - valueLow) * delta;
}
}
return work[13];
}
else if (freqTarget >= winamp_equalizer_bands[9]) {
float work[14];
float work_freq[14];
for (unsigned int i = 0; i < 10; ++i) {
work[i] = [[preset objectForKey:winamp_equalizer_items[1 + i]] floatValue];
work_freq[i] = winamp_equalizer_bands[i];
}
for (unsigned int i = 10; i < 14; ++i) {
work[i] = quadra(work + i - 3, 0.94);
work_freq[i] = quadra(work_freq + i - 3, 0.94);
}
for (unsigned int i = 0; i < 13; ++i) {
if (freqTarget >= work_freq[i] &&
freqTarget < work_freq[i + 1]) {
float freqLow = work_freq[i];
float freqHigh = work_freq[i + 1];
float valueLow = work[i];
float valueHigh = work[i + 1];
float delta = (freqTarget - freqLow) / (freqHigh - freqLow);
return valueLow + (valueHigh - valueLow) * delta;
}
}
return work[13];
}
// interpolation time! linear is fine for this
for (size_t i = 0; i < 9; ++i) {
if (freqTarget >= winamp_equalizer_bands[i] &&
freqTarget < winamp_equalizer_bands[i + 1]) {
float freqLow = winamp_equalizer_bands[i];
float freqHigh = winamp_equalizer_bands[i + 1];
float valueLow = [[preset objectForKey:winamp_equalizer_items[i + 1]] floatValue];
float valueHigh = [[preset objectForKey:winamp_equalizer_items[i + 2]] floatValue];
float delta = (freqTarget - freqLow) / (freqHigh - freqLow);
return valueLow + (valueHigh - valueLow) * delta;
}
}
return 0.0;
}
static void interpolateBandsTo10(float * out, NSDictionary * preset) {
for (size_t i = 0; i < 10; ++i) {
out[i] = interpolatePoint(preset, apple_equalizer_bands_10[i]);
}
}
static void interpolateBandsTo31(float * out, NSDictionary * preset) {
for (size_t i = 0; i < 31; ++i) {
out[i] = interpolatePoint(preset, apple_equalizer_bands_31[i]);
}
}
static void loadPresets()
{
if ([equalizer_presets_processed count]) return;
CFURLRef appUrlRef = CFBundleCopyResourceURL(CFBundleGetMainBundle(), CFSTR("Winamp.q1"), CFSTR("json"), NULL);
CFStringRef macPath = CFURLCopyFileSystemPath(appUrlRef, kCFURLPOSIXPathStyle);
NSFileHandle * fileHandle = [NSFileHandle fileHandleForReadingAtPath:(__bridge NSString *)macPath];
if (fileHandle) {
NSError *err;
NSData *data;
if (@available(macOS 10.15, *)) {
data = [fileHandle readDataToEndOfFileAndReturnError:&err];
}
else {
data = [fileHandle readDataToEndOfFile];
err = nil;
}
if (!err && data) {
equalizer_presets = json_parse(data.bytes, data.length);
if (equalizer_presets->type == json_object &&
equalizer_presets->u.object.length == 2 &&
strncmp(equalizer_presets->u.object.values[0].name, "type", equalizer_presets->u.object.values[0].name_length) == 0 &&
equalizer_presets->u.object.values[0].value->type == json_string &&
strncmp(equalizer_presets->u.object.values[0].value->u.string.ptr, "Winamp EQ library file v1.1", equalizer_presets->u.object.values[0].value->u.string.length ) == 0 &&
strncmp(equalizer_presets->u.object.values[1].name, "presets", equalizer_presets->u.object.values[1].name_length) == 0 &&
equalizer_presets->u.object.values[1].value->type == json_array)
{
// Got the array of presets
NSMutableArray * array = [[NSMutableArray alloc] init];
NSMutableDictionary * dict = [[NSMutableDictionary alloc] init];
size_t count = equalizer_presets->u.object.values[1].value->u.array.length;
json_value ** values = equalizer_presets->u.object.values[1].value->u.array.values;
for (size_t i = 0; i < count; ++i) {
if (values[i]->type == json_object) {
size_t object_items = values[i]->u.object.length;
json_object_entry * object_entry = values[i]->u.object.values;
if (object_items == (sizeof(winamp_equalizer_items)/sizeof(winamp_equalizer_items[0]))) {
NSMutableDictionary * equalizerItem = [[NSMutableDictionary alloc] init];
for (size_t j = 0; j < object_items; ++j) {
if (strncmp(object_entry[j].name, [winamp_equalizer_items[j] UTF8String], object_entry[j].name_length) == 0) {
if (j == 0 && object_entry[j].value->type == json_string) {
NSString * name = [NSString stringWithUTF8String:object_entry[j].value->u.string.ptr];
[equalizerItem setObject:name forKey:winamp_equalizer_items[j]];
}
else if (object_entry[j].value->type == json_integer) {
int64_t value = object_entry[j].value->u.integer;
float floatValue = ((value <= 64 && value >= 1) ? ((float)(value - 33) / 32.0 * 12.0) : 0.0);
[equalizerItem setObject:[NSNumber numberWithFloat:floatValue] forKey:winamp_equalizer_items[j]];
}
}
}
NSDictionary *outItem = [NSDictionary dictionaryWithDictionary:equalizerItem];
[array addObject:outItem];
[dict setObject:outItem forKey:[outItem objectForKey:@"name"]];
}
}
}
equalizer_presets_processed = [NSArray arrayWithArray:array];
equalizer_presets_by_name = [NSDictionary dictionaryWithDictionary:dict];
}
}
[fileHandle closeFile];
json_value_free(equalizer_presets);
equalizer_presets = NULL;
}
CFRelease(macPath);
CFRelease(appUrlRef);
}
void equalizerApplyGenre(NSString *genre) {
equalizerGenre = genre;
if ([[[NSUserDefaultsController sharedUserDefaultsController] defaults] boolForKey:@"GraphicEQtrackgenre"]) {
NSDictionary * preset = [equalizer_presets_by_name objectForKey:genre];
if (!preset) {
// Find a match
if (genre && ![genre isEqualToString:@""])
{
NSUInteger matchLength = 0;
NSString *lowerCaseGenre = [genre lowercaseString];
for (NSString *key in [equalizer_presets_by_name allKeys]) {
NSString *lowerCaseKey = [key lowercaseString];
if ([lowerCaseGenre containsString:lowerCaseKey]) {
if ([key length] > matchLength)
{
matchLength = [key length];
preset = [equalizer_presets_by_name objectForKey:key];
}
}
}
}
if (!preset) {
preset = [equalizer_presets_by_name objectForKey:equalizerDefaultGenre];
}
}
if (preset) {
NSInteger index = [equalizer_presets_processed indexOfObject:preset];
[[[NSUserDefaultsController sharedUserDefaultsController] defaults] setInteger:index forKey:@"GraphicEQpreset"];
}
}
}
void equalizerLoadPreset(AudioUnit au) {
NSInteger index = [[[NSUserDefaultsController sharedUserDefaultsController] defaults] integerForKey:@"GraphicEQpreset"];
if (index >= 0 && index < [equalizer_presets_processed count]) {
NSDictionary * preset = [equalizer_presets_processed objectAtIndex:index];
equalizerApplyPreset(au, preset);
}
}
void equalizerApplyPreset(AudioUnit au, NSDictionary * preset) {
if (au && preset) {
AudioUnitParameterValue paramValue = 0;
if (AudioUnitGetParameter(au, kGraphicEQParam_NumberOfBands, kAudioUnitScope_Global, 0, &paramValue))
return;
size_t numberOfBands = paramValue ? 31 : 10;
if (numberOfBands == 31) {
float presetValues[31];
interpolateBandsTo31(presetValues, preset);
for (unsigned int i = 0; i < 31; ++i)
{
AudioUnitSetParameter(au, i, kAudioUnitScope_Global, 0, presetValues[i], 0);
}
}
else if (numberOfBands == 10) {
float presetValues[10];
interpolateBandsTo10(presetValues, preset);
for (unsigned int i = 0; i < 10; ++i)
{
AudioUnitSetParameter(au, i, kAudioUnitScope_Global, 0, presetValues[i], 0);
}
}
}
}
@interface AUPluginUI (Private)
- (BOOL)test_cocoa_view_support;
- (int)create_cocoa_view;
- (BOOL)plugin_class_valid:(Class)pluginClass;
@end
@implementation AUPluginUI
- (id) initWithSampler:(AudioUnit)_au bringToFront:(BOOL)front orWindowNumber:(NSInteger)window
{
self = [super init];
if (self)
{
au = _au;
windowOpen = NO;
cocoa_window = nil;
au_view = nil;
if ([self test_cocoa_view_support])
{
[self create_cocoa_view];
}
if (au_view)
{
cocoa_window = [[AUPluginWindow alloc] initWithAuView:au_view withAu:au bringToFront:front relativeToWindow:window];
if (cocoa_window) {
windowOpen = YES;
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(windowClosed:) name:NSWindowWillCloseNotification object:cocoa_window];
}
}
}
return self;
}
- (void) dealloc
{
if (windowOpen)
{
[self windowClosed:nil];
}
[cocoa_window close];
cocoa_window = nil;
au_view = nil;
[[NSNotificationCenter defaultCenter] removeObserver:self];
}
- (BOOL) isOpen
{
return windowOpen;
}
- (void) bringToFront
{
[cocoa_window orderFront:cocoa_window];
}
- (void)windowClosed:(NSNotification*)notification
{
[cocoa_window saveFrameUsingName:@"GraphicEQposition"];
[[NSNotificationCenter defaultCenter] removeObserver:self];
windowOpen = NO;
}
- (BOOL)test_cocoa_view_support
{
UInt32 dataSize = 0;
Boolean isWritable = 0;
OSStatus err = AudioUnitGetPropertyInfo(au,
kAudioUnitProperty_CocoaUI, kAudioUnitScope_Global,
0, &dataSize, &isWritable);
return dataSize > 0 && err == noErr;
}
- (BOOL) plugin_class_valid: (Class)pluginClass
{
if([pluginClass conformsToProtocol: @protocol(AUCocoaUIBase)]) {
if([pluginClass instancesRespondToSelector: @selector(interfaceVersion)] &&
[pluginClass instancesRespondToSelector: @selector(uiViewForAudioUnit:withSize:)]) {
return true;
}
}
return false;
}
- (int)create_cocoa_view
{
bool wasAbleToLoadCustomView = false;
AudioUnitCocoaViewInfo* cocoaViewInfo = NULL;
UInt32 numberOfClasses = 0;
UInt32 dataSize;
Boolean isWritable;
NSString* factoryClassName = 0;
NSURL* CocoaViewBundlePath = NULL;
OSStatus result = AudioUnitGetPropertyInfo (au,
kAudioUnitProperty_CocoaUI,
kAudioUnitScope_Global,
0,
&dataSize,
&isWritable );
numberOfClasses = (dataSize - sizeof(CFURLRef)) / sizeof(CFStringRef);
// Does view have custom Cocoa UI?
if ((result == noErr) && (numberOfClasses > 0) ) {
cocoaViewInfo = (AudioUnitCocoaViewInfo *)malloc(dataSize);
if(AudioUnitGetProperty(au,
kAudioUnitProperty_CocoaUI,
kAudioUnitScope_Global,
0,
cocoaViewInfo,
&dataSize) == noErr) {
CocoaViewBundlePath = (__bridge NSURL *)cocoaViewInfo->mCocoaAUViewBundleLocation;
// we only take the first view in this example.
factoryClassName = (__bridge NSString *)cocoaViewInfo->mCocoaAUViewClass[0];
} else {
if (cocoaViewInfo != NULL) {
free (cocoaViewInfo);
cocoaViewInfo = NULL;
}
}
}
// [A] Show custom UI if view has it
if (CocoaViewBundlePath && factoryClassName) {
NSBundle *viewBundle = [NSBundle bundleWithPath:[CocoaViewBundlePath path]];
if (viewBundle == NULL) {
return -1;
} else {
Class factoryClass = [viewBundle classNamed:factoryClassName];
if (!factoryClass) {
return -1;
}
// make sure 'factoryClass' implements the AUCocoaUIBase protocol
if (![self plugin_class_valid: factoryClass]) {
return -1;
}
// make a factory
id factory = [[factoryClass alloc] init];
if (factory == NULL) {
return -1;
}
// make a view
au_view = [factory uiViewForAudioUnit:au withSize:NSZeroSize];
// cleanup
if (cocoaViewInfo) {
UInt32 i;
for (i = 0; i < numberOfClasses; i++)
CFRelease(cocoaViewInfo->mCocoaAUViewClass[i]);
free (cocoaViewInfo);
}
wasAbleToLoadCustomView = true;
}
}
if (!wasAbleToLoadCustomView) {
// load generic Cocoa view
au_view = [[AUGenericView alloc] initWithAudioUnit:au];
[(AUGenericView *)au_view setShowsExpertParameters:1];
}
return 0;
}
@end
@implementation AUPluginWindow
- (id) initWithAuView:(NSView *)_auView withAu:(AudioUnit)au bringToFront:(BOOL)front relativeToWindow:(NSInteger)window
{
NSRect frame = [_auView frame];
CGFloat req_width = frame.size.width;
CGFloat req_height = frame.size.height;
//BOOL resizable = [_auView autoresizingMask];
self = [super initWithContentRect:NSMakeRect(0, 0, req_width, req_height + 32)
styleMask:(NSWindowStyleMaskTitled |
NSWindowStyleMaskClosable)
backing:NSBackingStoreBuffered
defer:NO];
if (self)
{
self->au = au;
auView = _auView;
[self setAutodisplay:YES];
[self setOneShot:YES];
[self setReleasedWhenClosed:NO];
NSRect topRect = NSMakeRect(0, 0, req_width, 40);
topView = [[NSView alloc] initWithFrame:topRect];
NSRect topFrame = NSMakeRect(0, req_height, req_width, topRect.size.height);
NSRect newFrame = NSMakeRect(0, 0, req_width, req_height);
topRect = NSMakeRect(0, 0, req_width, req_height + topRect.size.height);
splitView = [[NSSplitView alloc] initWithFrame:topRect];
[splitView setSubviews:[NSArray arrayWithObjects:topView, auView, nil]];
[self setContentView:splitView];
[topView setFrame:topFrame];
[auView setFrame:newFrame];
BOOL enabled = [[[NSUserDefaultsController sharedUserDefaultsController] defaults] boolForKey:@"GraphicEQenable"];
NSButton *button = [NSButton checkboxWithTitle:@"Enabled" target:self action:@selector(toggleEnable:)];
[button setState:enabled ? NSControlStateValueOn : NSControlStateValueOff];
NSRect buttonFrame = [button frame];
buttonFrame.origin = NSMakePoint( 18, 7 );
[button setFrame:buttonFrame];
[topView addSubview:button];
enabled = [[[NSUserDefaultsController sharedUserDefaultsController] defaults] boolForKey:@"GraphicEQtrackgenre"];
NSButton *trackButton = [NSButton checkboxWithTitle:@"Tracking genre tags" target:self action:@selector(toggleTracking:)];
[trackButton setState:enabled ? NSControlStateValueOn : NSControlStateValueOff];
NSRect trackButtonFrame = [trackButton frame];
trackButtonFrame.origin = NSMakePoint(buttonFrame.origin.x + buttonFrame.size.width + 4, 7);
[trackButton setFrame:trackButtonFrame];
[topView addSubview:trackButton];
loadPresets();
NSRect popupFrame = NSMakeRect(req_width - 320, 0, 308, 26);
presetButton = [[NSPopUpButton alloc] initWithFrame:popupFrame];
[topView addSubview:presetButton];
[presetButton setAction:@selector(changePreset:)];
[presetButton setTarget:self];
NSMutableArray * array = [[NSMutableArray alloc] init];
for (NSDictionary * preset in equalizer_presets_processed)
{
[array addObject:[preset objectForKey:@"name"]];
}
[array addObject:@"Custom"];
[presetButton addItemsWithTitles:array];
NSInteger presetSelected = [[[NSUserDefaultsController sharedUserDefaultsController] defaults] integerForKey:@"GraphicEQpreset"];
if (presetSelected < 0 || presetSelected >= [equalizer_presets_processed count])
presetSelected = [equalizer_presets_processed count];
[presetButton selectItemAtIndex:presetSelected];
equalizerLoadPreset(au);
NSTextField * presetLabel = [NSTextField labelWithString:@"Preset:"];
NSRect labelFrame = [presetLabel frame];
labelFrame.origin = NSMakePoint(popupFrame.origin.x - labelFrame.size.width - 2, 7);
[presetLabel setFrame:labelFrame];
[topView addSubview:presetLabel];
[splitView adjustSubviews];
[splitView setDelegate:self];
[self setFrameUsingName:@"GraphicEQposition"];
AUListenerCreateWithDispatchQueue(&listenerRef, 0.25, dispatch_get_main_queue(), ^void(void *inObject, const AudioUnitParameter *inParameter, AudioUnitParameterValue inValue) {
AUPluginWindow * _self = (__bridge AUPluginWindow *) inObject;
if (inParameter->mParameterID >= 0 && inParameter->mParameterID <= 31) {
[_self->presetButton selectItemAtIndex:[equalizer_presets_processed count]];
}
});
AudioUnitParameter param;
param.mAudioUnit = au;
param.mElement = 0;
param.mScope = kAudioUnitScope_Global;
for (unsigned int i = 0; i < 31; ++i) {
param.mParameterID = i;
AUListenerAddParameter(listenerRef, (__bridge void *)self, &param);
}
[[NSUserDefaultsController sharedUserDefaultsController] addObserver:self forKeyPath:@"values.GraphicEQpreset" options:0 context:nil];
if (front)
{
[self orderFront:self];
}
else
[self orderWindow:NSWindowBelow relativeTo:window];
}
return self;
}
- (void) dealloc
{
if (listenerRef) {
AUListenerDispose(listenerRef);
}
[[NSUserDefaultsController sharedUserDefaultsController] removeObserver:self forKeyPath:@"values.GraphicEQpreset"];
}
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context
{
if ([keyPath isEqualToString:@"values.GraphicEQpreset"]) {
NSInteger index = [[[NSUserDefaultsController sharedUserDefaultsController] defaults] integerForKey:@"GraphicEQpreset"];
if (index < 0 || index > [equalizer_presets_processed count])
index = [equalizer_presets_processed count];
[presetButton selectItemAtIndex:index];
}
}
- (NSRect)splitView:(NSSplitView *)splitView effectiveRect:(NSRect)proposedEffectiveRect forDrawnRect:(NSRect)drawnRect ofDividerAtIndex:(NSInteger)dividerIndex
{
return NSZeroRect;
}
- (void) toggleEnable:(id)sender
{
BOOL enabled = [sender state] == NSControlStateValueOn;
[[[NSUserDefaultsController sharedUserDefaultsController] defaults] setBool:enabled forKey:@"GraphicEQenable"];
}
- (void) toggleTracking:(id)sender
{
BOOL enabled = [sender state] == NSControlStateValueOn;
[[[NSUserDefaultsController sharedUserDefaultsController] defaults] setBool:enabled forKey:@"GraphicEQtrackgenre"];
equalizerApplyGenre(equalizerGenre);
[self changePreset:presetButton];
}
- (void) changePreset:(id)sender
{
NSInteger index = [sender indexOfSelectedItem];
if (index < [equalizer_presets_processed count])
{
NSDictionary * preset = [equalizer_presets_processed objectAtIndex:index];
equalizerApplyPreset(au, preset);
NSEvent * event = [NSEvent mouseEventWithType:NSEventTypeLeftMouseDown location:NSMakePoint(0, 0) modifierFlags:0 timestamp:0 windowNumber:[self windowNumber] context:nil eventNumber:0 clickCount:1 pressure:1.0];
[auView mouseDown:event];
[auView mouseUp:event];
[[[NSUserDefaultsController sharedUserDefaultsController] defaults] setInteger:index forKey:@"GraphicEQpreset"];
}
else
{
[[[NSUserDefaultsController sharedUserDefaultsController] defaults] setInteger:-1 forKey:@"GraphicEQpreset"];
}
}
@end
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