initial import of Nosefart sources

CVS patchset: 3824
CVS date: 2003/01/08 07:04:35

1 files changed, 144 insertions, 0 deletions

diff --git a/src/libxineadec/nosefart/nsf.h b/src/libxineadec/nosefart/nsf.h
new file mode 100644
index 000000000..9ca9f298c
--- /dev/null
+++ b/src/libxineadec/nosefart/nsf.h
@@ -0,0 +1,144 @@
+/*
+** Nofrendo (c) 1998-2000 Matthew Conte (matt@conte.com)
+**
+**
+** This program is free software; you can redistribute it and/or
+** modify it under the terms of version 2 of the GNU Library General 
+** Public License as published by the Free Software Foundation.
+**
+** This program is distributed in the hope that it will be useful, 
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU 
+** Library General Public License for more details.  To obtain a 
+** copy of the GNU Library General Public License, write to the Free 
+** Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+**
+** Any permitted reproduction of these routines, in whole or in part,
+** must bear this legend.
+**
+**
+** nsf.h
+**
+** NSF loading/saving related defines / prototypes
+** $Id: nsf.h,v 1.1 2003/01/08 07:04:35 tmmm Exp $
+*/
+
+#ifndef _NSF_H_
+#define _NSF_H_
+
+#include "osd.h"
+#include "nes6502.h"
+#include "nes_apu.h"
+
+#define  NSF_MAGIC   "NESM\x1A"
+
+#define  NSF_DEDICATED_PAL       0x01
+#define  NSF_DUAL_PAL_NTSC       0x02
+
+#define  EXT_SOUND_NONE          0x00
+#define  EXT_SOUND_VRCVI         0x01
+#define  EXT_SOUND_VRCVII        0x02
+#define  EXT_SOUND_FDS           0x04
+#define  EXT_SOUND_MMC5          0x08
+#define  EXT_SOUND_NAMCO106      0x10
+#define  EXT_SOUND_SUNSOFT_FME07 0x20
+/* bits 6,7: future expansion */
+
+#define  NSF_HEADER_SIZE         0x80
+
+/* 60 Hertz refresh (NTSC) */
+#define  NES_MASTER_CLOCK     21477272.7272
+#define  NTSC_REFRESH         60
+#define  NTSC_SUBCARRIER_DIV  12
+#define  NTSC_SCANLINES       262
+
+#define  NES_FRAME_CYCLES     ((NES_MASTER_CLOCK / NTSC_SUBCARRIER_DIV) / NTSC_REFRESH)
+#define  NES_SCANLINE_CYCLES  (NES_FRAME_CYCLES / NTSC_SCANLINES)
+
+/* filter levels */
+enum
+{
+   NSF_FILTER_NONE,
+   NSF_FILTER_LOWPASS,
+   NSF_FILTER_WEIGHTED
+};
+
+typedef struct nsf_s
+{
+   /* NESM header */
+   uint8  id[5]               __PACKED__; /* NESM\x1A */
+   uint8  version             __PACKED__; /* spec version */
+   uint8  num_songs           __PACKED__; /* total num songs */
+   uint8  start_song          __PACKED__; /* first song */
+   uint16 load_addr           __PACKED__; /* loc to load code */
+   uint16 init_addr           __PACKED__; /* init call address */
+   uint16 play_addr           __PACKED__; /* play call address */
+   uint8  song_name[32]       __PACKED__; /* name of song */
+   uint8  artist_name[32]     __PACKED__; /* artist name */
+   uint8  copyright[32]       __PACKED__; /* copyright info */
+   uint16 ntsc_speed          __PACKED__; /* playback speed (if NTSC) */
+   uint8  bankswitch_info[8]  __PACKED__; /* initial code banking */
+   uint16 pal_speed           __PACKED__; /* playback speed (if PAL) */
+   uint8  pal_ntsc_bits       __PACKED__; /* NTSC/PAL determination bits */
+   uint8  ext_sound_type      __PACKED__; /* type of external sound gen. */
+   uint8  reserved[4]         __PACKED__; /* reserved */
+
+   /* things that the NSF player needs */
+   uint8  *data;              /* actual NSF data */
+   uint32 length;             /* length of data */
+   uint32 playback_rate;      /* current playback rate */
+   uint8  current_song;       /* current song */
+   boolean bankswitched;      /* is bankswitched? */
+
+   /* CPU and APU contexts */
+   nes6502_context *cpu;
+   apu_t *apu;
+
+   /* our main processing routine, calls all external mixing routines */
+   void (*process)(void *buffer, int num_samples);
+} nsf_t;
+
+/* Function prototypes */
+extern void nsf_init(void);
+
+extern nsf_t *nsf_load(char *filename, void *source, int length);
+extern void nsf_free(nsf_t **nsf_info);
+
+extern void nsf_playtrack(nsf_t *nsf, int track, int sample_rate, int sample_bits, 
+                          boolean stereo);
+extern void nsf_frame(nsf_t *nsf);
+extern void nsf_setchan(nsf_t *nsf, int chan, boolean enabled);
+extern void nsf_setfilter(nsf_t *nsf, int filter_type);
+
+#endif /* _NSF_H_ */
+
+/*
+** $Log: nsf.h,v $
+** Revision 1.1  2003/01/08 07:04:35  tmmm
+** initial import of Nosefart sources
+**
+** Revision 1.11  2000/07/04 04:59:24  matt
+** removed DOS-specific stuff
+**
+** Revision 1.10  2000/07/03 02:19:36  matt
+** dynamic address range handlers, cleaner and faster
+**
+** Revision 1.9  2000/06/23 03:27:58  matt
+** cleaned up external sound inteface
+**
+** Revision 1.8  2000/06/20 04:04:37  matt
+** moved external soundchip struct to apu module
+**
+** Revision 1.7  2000/06/20 00:05:45  matt
+** changed to driver-based external sound generation
+**
+** Revision 1.6  2000/06/13 03:51:54  matt
+** update API to take freq/sample data on nsf_playtrack
+**
+** Revision 1.5  2000/06/12 01:13:00  matt
+** added CPU/APU as members of the nsf struct
+**
+** Revision 1.4  2000/06/09 15:12:26  matt
+** initial revision
+**
+*/
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