111 lines
1.9 KiB
Plaintext
111 lines
1.9 KiB
Plaintext
//
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// GameFile.m
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// Cog
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//
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// Created by Vincent Spader on 5/29/06.
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// Copyright 2006 Vincent Spader. All rights reserved.
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//
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#import "GameFile.h"
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#include "GME/Nsf_Emu.h"
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#include "GME/Gbs_Emu.h"
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#include "GME/Spc_Emu.h"
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#include "GME/Vgm_Emu.h"
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#include "GME/Gym_Emu.h"
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@implementation GameFile
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- (BOOL)open:(const char *)filename
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{
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int i;
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const char* p;
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char ext[3];
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p = strrchr( (char*) filename, '.' )+1;
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NSLog(@"OPENING GAME FILE: %s", filename);
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NSLog(@"Extension: %s", p);
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if (!p || strlen(p) != 3)
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return NO;
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for (i = 0; i < 4; i++)
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ext[i] = toupper(p[i]);
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ext[3] = 0;
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if (!ext)
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emu = NULL;
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else if ( !strcmp( ext, "NSF" ) )
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emu = new Nsf_Emu;
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else if ( !strcmp( ext, "GBS" ) )
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emu = new Gbs_Emu;
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else if ( !strcmp( ext, "SPC" ) )
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emu = new Spc_Emu;
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else if ( !strcmp( ext, "VGM" ) || !strcmp( ext, "VGZ" ) )
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emu = new Vgm_Emu;
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else if ( !strcmp( ext, "GYM" ) )
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emu = new Gym_Emu;
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else
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emu = NULL;
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NSLog(@"EMU IS: %i", emu);
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if (!emu)
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return NO;
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emu->set_sample_rate(44100);
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emu->load_file(filename);
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emu->start_track( 0 );
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frequency = 44100;
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channels = 2;
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bitsPerSample = 8 * sizeof(Music_Emu::sample_t);
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totalSize = emu->track_count() * frequency*(bitsPerSample/8)*channels;
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isBigEndian = YES;
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NSLog(@"OPENED GAME FILE:");
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return YES;
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}
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- (BOOL)readInfo:(const char *)filename
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{
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return [self open:filename];
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}
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- (int)fillBuffer:(void *)buf ofSize:(UInt32)size
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{
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int numSamples = size / ((bitsPerSample/8));
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emu->play(numSamples, (short int *)buf);
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return size; //No such thing as EOF
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}
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//Cheap hack until I figure out how to actually support multiple tracks in a single file.
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- (double)seekToTime:(double)milliseconds
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{
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int track;
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track = (int)(milliseconds/1000.0);
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NSLog(@"Track: %i", track);
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if (track > emu->track_count())
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{
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track = emu->track_count();
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}
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emu->start_track( track );
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return -1.0;
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}
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- (void)close
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{
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if (emu)
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delete emu;
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}
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@end
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