cog/Plugins/OpenMPT.old/OpenMPT/OMPTDecoder.mm

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//
// OMPTDecoder.m
// OpenMPT
//
// Created by Christopher Snowhill on 1/4/18.
// Copyright 2018 __LoSnoCo__. All rights reserved.
//
#import "OMPTDecoder.h"
#import "Logging.h"
#import "PlaylistController.h"
static void g_push_archive_extensions(std::vector<std::string> &list) {
static std::string archive_extensions[] = {
"mdz", "mdr", "s3z", "xmz", "itz", "mptmz"
};
for(unsigned i = 0, j = 6; i < j; ++i) {
if(list.empty() || std::find(list.begin(), list.end(), archive_extensions[i]) == list.end())
list.push_back(archive_extensions[i]);
}
}
@implementation OMPTOldDecoder
- (id)init {
self = [super init];
if(self) {
mod = NULL;
}
return self;
}
- (BOOL)open:(id<CogSource>)s {
[self setSource:s];
[source seek:0 whence:SEEK_END];
long size = [source tell];
[source seek:0 whence:SEEK_SET];
std::vector<char> data(static_cast<std::size_t>(size));
[source read:data.data() amount:size];
int track_num;
if([[source.url fragment] length] == 0)
track_num = 0;
else
track_num = [[source.url fragment] intValue];
int interp = 8;
NSString *resampling = [[NSUserDefaults standardUserDefaults] stringForKey:@"resampling"];
if([resampling isEqualToString:@"zoh"])
interp = 1;
else if([resampling isEqualToString:@"blep"])
interp = 1;
else if([resampling isEqualToString:@"linear"])
interp = 2;
else if([resampling isEqualToString:@"blam"])
interp = 2;
else if([resampling isEqualToString:@"cubic"])
interp = 4;
else if([resampling isEqualToString:@"sinc"])
interp = 8;
try {
std::map<std::string, std::string> ctls;
ctls["seek.sync_samples"] = "1";
mod = new openmpt::module(data, std::clog, ctls);
mod->select_subsong(track_num);
length = mod->get_duration_seconds() * 44100.0;
mod->set_repeat_count(IsRepeatOneSet() ? -1 : 0);
mod->set_render_param(openmpt::module::RENDER_MASTERGAIN_MILLIBEL, 0);
mod->set_render_param(openmpt::module::RENDER_STEREOSEPARATION_PERCENT, 100);
mod->set_render_param(openmpt::module::RENDER_INTERPOLATIONFILTER_LENGTH, interp);
mod->set_render_param(openmpt::module::RENDER_VOLUMERAMPING_STRENGTH, -1);
mod->ctl_set_boolean("render.resampler.emulate_amiga", true);
left.resize(1024);
right.resize(1024);
} catch(std::exception & /*e*/) {
return NO;
}
[self willChangeValueForKey:@"properties"];
[self didChangeValueForKey:@"properties"];
return YES;
}
- (NSDictionary *)properties {
return @{@"bitrate": [NSNumber numberWithInt:0],
@"sampleRate": [NSNumber numberWithFloat:44100],
@"totalFrames": [NSNumber numberWithDouble:length],
@"bitsPerSample": [NSNumber numberWithInt:32],
@"floatingPoint": [NSNumber numberWithBool:YES],
@"channels": [NSNumber numberWithInt:2],
@"seekable": [NSNumber numberWithBool:YES],
@"endian": @"host",
@"encoding": @"synthesized"};
}
- (NSDictionary *)metadata {
return @{};
}
- (int)readAudio:(void *)buf frames:(UInt32)frames {
mod->set_repeat_count(IsRepeatOneSet() ? -1 : 0);
int total = 0;
while(total < frames) {
int framesToRender = 1024;
if(framesToRender > frames)
framesToRender = frames;
std::size_t count = mod->read(44100, framesToRender, left.data(), right.data());
if(count == 0)
break;
for(std::size_t frame = 0; frame < count; frame++) {
((float *)buf)[(total + frame) * 2 + 0] = left[frame];
((float *)buf)[(total + frame) * 2 + 1] = right[frame];
}
total += count;
if(count < framesToRender)
break;
}
return total;
}
- (long)seek:(long)frame {
mod->set_position_seconds(frame * (1.0 / 44100.0));
return frame;
}
- (void)cleanUp {
delete mod;
mod = NULL;
}
- (void)close {
[self cleanUp];
}
- (void)dealloc {
[self close];
}
- (void)setSource:(id<CogSource>)s {
source = s;
}
- (id<CogSource>)source {
return source;
}
+ (NSArray *)fileTypes {
std::vector<std::string> extensions = openmpt::get_supported_extensions();
g_push_archive_extensions(extensions);
NSMutableArray *array = [NSMutableArray array];
for(std::vector<std::string>::iterator ext = extensions.begin(); ext != extensions.end(); ++ext) {
[array addObject:[NSString stringWithUTF8String:ext->c_str()]];
}
return [NSArray arrayWithArray:array];
}
+ (NSArray *)mimeTypes {
return @[@"audio/x-it", @"audio/x-xm", @"audio/x-s3m", @"audio/x-mod"];
}
+ (float)priority {
return 1.0;
}
+ (NSArray *)fileTypeAssociations {
NSMutableArray *ret = [[NSMutableArray alloc] init];
[ret addObject:@"libOpenMPT Module Files"];
[ret addObject:@"song.icns"];
[ret addObjectsFromArray:[self fileTypes]];
return @[[NSArray arrayWithArray:ret]];
}
@end