229 lines
7.7 KiB
Objective-C
229 lines
7.7 KiB
Objective-C
//
|
|
// VGMDecoder.m
|
|
// vgmstream
|
|
//
|
|
// Created by Christopher Snowhill on 02/25/14.
|
|
// Copyright 2014 __NoWork, Inc__. All rights reserved.
|
|
//
|
|
|
|
#import "VGMDecoder.h"
|
|
|
|
#import "PlaylistController.h"
|
|
|
|
typedef struct _COGSTREAMFILE {
|
|
STREAMFILE sf;
|
|
id file;
|
|
off_t offset;
|
|
char name[PATH_LIMIT];
|
|
} COGSTREAMFILE;
|
|
|
|
static void cogsf_seek(COGSTREAMFILE *this, off_t offset) {
|
|
if ([this->file seek:offset whence:SEEK_SET] != 0)
|
|
this->offset = offset;
|
|
else
|
|
this->offset = [this->file tell];
|
|
}
|
|
|
|
static off_t cogsf_get_size(COGSTREAMFILE *this) {
|
|
off_t offset = [this->file tell];
|
|
[this->file seek:0 whence:SEEK_END];
|
|
off_t size = [this->file tell];
|
|
[this->file seek:offset whence:SEEK_SET];
|
|
return size;
|
|
}
|
|
|
|
static off_t cogsf_get_offset(COGSTREAMFILE *this) {
|
|
return this->offset;
|
|
}
|
|
|
|
static void cogsf_get_name(COGSTREAMFILE *this, char *buffer, size_t length) {
|
|
strncpy(buffer, this->name, length);
|
|
buffer[length-1]='\0';
|
|
}
|
|
|
|
static size_t cogsf_read(COGSTREAMFILE *this, uint8_t *dest, off_t offset, size_t length) {
|
|
size_t read;
|
|
if (this->offset != offset)
|
|
cogsf_seek(this, offset);
|
|
read = [this->file read:dest amount:length];
|
|
if (read > 0)
|
|
this->offset += read;
|
|
return read;
|
|
}
|
|
|
|
static void cogsf_close(COGSTREAMFILE *this) {
|
|
[this->file release];
|
|
free(this);
|
|
}
|
|
|
|
static STREAMFILE *cogsf_create_from_path(const char *path);
|
|
static STREAMFILE *cogsf_open(COGSTREAMFILE *this, const char *const filename,size_t buffersize) {
|
|
if (!filename) return NULL;
|
|
return cogsf_create_from_path(filename);
|
|
}
|
|
|
|
static STREAMFILE *cogsf_create(id file, const char *path) {
|
|
COGSTREAMFILE *streamfile = malloc(sizeof(COGSTREAMFILE));
|
|
|
|
if (!streamfile) return NULL;
|
|
|
|
memset(streamfile,0,sizeof(COGSTREAMFILE));
|
|
streamfile->sf.read = (void*)cogsf_read;
|
|
streamfile->sf.get_size = (void*)cogsf_get_size;
|
|
streamfile->sf.get_offset = (void*)cogsf_get_offset;
|
|
streamfile->sf.get_name = (void*)cogsf_get_name;
|
|
streamfile->sf.get_realname = (void*)cogsf_get_name;
|
|
streamfile->sf.open = (void*)cogsf_open;
|
|
streamfile->sf.close = (void*)cogsf_close;
|
|
streamfile->file = [file retain];
|
|
streamfile->offset = 0;
|
|
strncpy(streamfile->name, path, sizeof(streamfile->name));
|
|
|
|
return &streamfile->sf;
|
|
}
|
|
|
|
STREAMFILE *cogsf_create_from_path(const char *path) {
|
|
id<CogSource> source;
|
|
NSString * urlString = [NSString stringWithUTF8String:path];
|
|
NSURL * url = [NSURL URLWithString:[urlString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
|
|
|
|
id audioSourceClass = NSClassFromString(@"AudioSource");
|
|
source = [audioSourceClass audioSourceForURL:url];
|
|
|
|
if (![source open:url])
|
|
return 0;
|
|
|
|
if (![source seekable])
|
|
return 0;
|
|
|
|
return cogsf_create(source, path);
|
|
}
|
|
|
|
VGMSTREAM *init_vgmstream_from_cogfile(const char *path) {
|
|
STREAMFILE *sf;
|
|
VGMSTREAM *vgm;
|
|
|
|
sf = cogsf_create_from_path(path);
|
|
if (!sf) return NULL;
|
|
|
|
vgm = init_vgmstream_from_STREAMFILE(sf);
|
|
if (!vgm) goto err1;
|
|
|
|
return vgm;
|
|
err1:
|
|
cogsf_close((COGSTREAMFILE *)sf);
|
|
return NULL;
|
|
}
|
|
|
|
@implementation VGMDecoder
|
|
|
|
- (BOOL)open:(id<CogSource>)s
|
|
{
|
|
stream = init_vgmstream_from_cogfile([[[[s url] absoluteString] stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding] UTF8String]);
|
|
if ( !stream )
|
|
return NO;
|
|
|
|
sampleRate = stream->sample_rate;
|
|
channels = stream->channels;
|
|
totalFrames = get_vgmstream_play_samples( 2.0, 10.0, 10.0, stream );
|
|
framesFade = sampleRate * 10;
|
|
framesLength = totalFrames - framesFade;
|
|
|
|
framesRead = 0;
|
|
|
|
[self willChangeValueForKey:@"properties"];
|
|
[self didChangeValueForKey:@"properties"];
|
|
|
|
return YES;
|
|
}
|
|
|
|
- (NSDictionary *)properties
|
|
{
|
|
return [NSDictionary dictionaryWithObjectsAndKeys:
|
|
[NSNumber numberWithInt:0], @"bitrate",
|
|
[NSNumber numberWithInt:sampleRate], @"sampleRate",
|
|
[NSNumber numberWithDouble:totalFrames], @"totalFrames",
|
|
[NSNumber numberWithInt:16], @"bitsPerSample",
|
|
[NSNumber numberWithBool:NO], @"floatingPoint",
|
|
[NSNumber numberWithInt:channels], @"channels",
|
|
[NSNumber numberWithBool:YES], @"seekable",
|
|
@"host", @"endian",
|
|
nil];
|
|
}
|
|
|
|
- (int)readAudio:(void *)buf frames:(UInt32)frames
|
|
{
|
|
BOOL repeatone = IsRepeatOneSet();
|
|
|
|
if (!repeatone && framesRead >= totalFrames)
|
|
return 0;
|
|
|
|
sample * sbuf = (sample *) buf;
|
|
|
|
render_vgmstream( sbuf, frames, stream );
|
|
|
|
if ( !repeatone && framesRead + frames > framesLength ) {
|
|
long fadeStart = (framesLength > framesRead) ? framesLength : framesRead;
|
|
long fadeEnd = (framesRead + frames) > totalFrames ? totalFrames : (framesRead + frames);
|
|
long fadePos;
|
|
|
|
int64_t fadeScale = (int64_t)(totalFrames - fadeStart) * INT_MAX / framesFade;
|
|
int64_t fadeStep = INT_MAX / framesFade;
|
|
sbuf += (fadeStart - framesRead) * 2;
|
|
for (fadePos = fadeStart; fadePos < fadeEnd; ++fadePos) {
|
|
sbuf[ 0 ] = (int16_t)((int64_t)(sbuf[ 0 ]) * fadeScale / INT_MAX);
|
|
sbuf[ 1 ] = (int16_t)((int64_t)(sbuf[ 1 ]) * fadeScale / INT_MAX);
|
|
sbuf += 2;
|
|
fadeScale -= fadeStep;
|
|
if (fadeScale <= 0) break;
|
|
}
|
|
frames = (UInt32)(fadePos - framesRead);
|
|
}
|
|
|
|
framesRead += frames;
|
|
|
|
return frames;
|
|
}
|
|
|
|
- (long)seek:(long)frame
|
|
{
|
|
if (frame < framesRead) {
|
|
reset_vgmstream( stream );
|
|
framesRead = 0;
|
|
}
|
|
|
|
while (framesRead < frame) {
|
|
sample buffer[1024];
|
|
long max_sample_count = 1024 / channels;
|
|
long samples_to_skip = frame - framesRead;
|
|
if ( samples_to_skip > max_sample_count )
|
|
samples_to_skip = max_sample_count;
|
|
render_vgmstream( buffer, (int)samples_to_skip, stream );
|
|
framesRead += samples_to_skip;
|
|
}
|
|
|
|
return framesRead;
|
|
}
|
|
|
|
- (void)close
|
|
{
|
|
close_vgmstream( stream );
|
|
}
|
|
|
|
+ (NSArray *)fileTypes
|
|
{
|
|
return [NSArray arrayWithObjects:@"2dx9", @"aaap", @"aax", @"acm", @"adp", @"adpcm", @"ads", @"adx", @"afc", @"agsc", @"ahx",@"aifc", @"aiff", @"aix", @"amts", @"as4", @"asd", @"asf", @"asr", @"ass", @"ast", @"aud", @"aus", @"baf", @"baka", @"bar", @"bcstm", @"bcwav", @"bfstm", @"bfwav", @"bfwavnsmbu", @"bg00", @"bgw", @"bh2pcm", @"bmdx", @"bns", @"bnsf", @"bo2", @"brstm", @"caf", @"capdsp", @"ccc", @"cfn", @"cnk", @"dcs", @"dcsw", @"ddsp", @"de2", @"dmsg", @"dsp", @"dvi", @"dxh", @"eam", @"emff", @"enth", @"fag", @"filp", @"fsb", @"fwav", @"gca", @"gcm", @"gcsw", @"gcw", @"genh", @"gms", @"gsp", @"hgc1", @"his", @"hps", @"hwas", @"idsp", @"idvi", @"ikm", @"ild", @"int", @"isd", @"ish", @"ivaud", @"ivb", @"joe", @"kces", @"kcey", @"khv", @"kraw", @"leg", @"logg", @"lps", @"lsf", @"lwav", @"matx", @"mcg", @"mi4", @"mib", @"mic", @"mihb", @"mpdsp", @"msa", @"mss", @"msvp", @"mus", @"musc", @"musx", @"mwv", @"myspd", @"ndp", @"npsf", @"nus3bank", @"nwa", @"omu", @"otm", @"p3d", @"pcm", @"pdt", @"pnb", @"pos", @"psh", @"psw", @"raw", @"rkv", @"rnd", @"rrds", @"rsd", @"rsf", @"rstm", @"rwar", @"rwav", @"rws", @"rwsd", @"rwx", @"rxw", @"s14", @"sab", @"sad", @"sap", @"sc", @"scd", @"sd9", @"sdt", @"seg", @"sfl", @"sfs", @"sl3", @"sli", @"smp", @"smpl", @"snd", @"sng", @"sns", @"spd", @"sps", @"spsd", @"spt", @"spw", @"ss2", @"ss7", @"ssm", @"sss", @"ster", @"sth", @"stm", @"stma", @"str", @"strm", @"sts", @"stx", @"svag", @"svs", @"swav", @"swd", @"tec", @"thp", @"tk5", @"tydsp", @"um3", @"vag", @"vas", @"vgs", @"vig", @"vjdsp", @"voi", @"vpk", @"vs", @"vsf", @"waa", @"wac", @"wad", @"wam", @"was", @"wavm", @"wb", @"wii", @"wp2", @"wsd", @"wsi", @"wvs", @"xa", @"xa2", @"xa30", @"xmu", @"xss", @"xvas", @"xwav", @"xwb", @"ydsp", @"ymf", @"zsd", @"zwdsp", nil];
|
|
}
|
|
|
|
+ (NSArray *)mimeTypes
|
|
{
|
|
return nil;
|
|
}
|
|
|
|
+ (float)priority
|
|
{
|
|
return 0.0;
|
|
}
|
|
|
|
@end
|