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/* ScummVM - Scumm Interpreter
* Copyright (C) 2004 The ScummVM project
*
* The ReInherit Engine is (C)2000-2003 by Daniel Balsom.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* 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 General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* $Header$
*
*/
/*
Description:
XMIDI conversion routines
Notes:
Code adapted from XMILoader by Keet ( fox@foxpaws.net ), (C)2000
*/
#ifndef SAGA_XMIDI_H_
#define SAGA_XMIDI_H_
namespace Saga {
#define XMIDI_TIMEDIV 0x3C
/* XMIDI/IFF 4CC codes
\*--------------------------------------------------------------------------*/
#define IFF_FORMAT_4CC "FORM"
#define IFF_CATEGORY_4CC "CAT "
#define XMI_DESC_4CC "XDIR"
#define XMI_INFO_4CC "INFO"
#define XMIDI_DESC_4CC "XMID"
#define XMIDI_TIMBRE_4CC "TIMB"
#define XMIDI_EVENT_4CC "EVNT"
/* IFF/XMI Data structures
\*--------------------------------------------------------------------------*/
struct IFF_ID_CHUNK {
char id_4cc[4]; /* 4cc */
ulong chunk_len; /* u32_be */
char desc_4cc[4]; /* 4cc */
};
#define IFF_ID_CHUNK_HEADERLEN 12
struct XMI_INFO_CHUNK {
char id_4cc[4]; /* 4cc */
ulong chunk_len; /* u32_be */
uint n_tracks; /* u16_le */
};
struct XMI_TIMB_CHUNK {
char id_4cc[4]; /* 4cc */
ulong chunk_len; /* u32_be */
};
struct XMI_EVENT_CHUNK {
char id_4cc[4]; /* 4cc */
ulong chunk_len; /* u32_be */
};
typedef struct SMF_HEADER_CHUNK_tag {
char smf_id[4]; /* u8 */
unsigned int smf_header_len; /* u32_be */
unsigned short smf_format; /* u16_be */
unsigned short smf_ntracks; /* u16_be */
union {
unsigned short ppqn; /* u16_be */
signed char smpte[2];
} time_division;
} SMF_HEADER_CHUNK;
struct SMF_TRACK_CHUNK {
char smf_track_id[4];
unsigned int smf_track_len;
};
#define MIDI_HEADER_LEN 14
#define MIDI_HEADER_CHUNK_LEN 6
#define MIDI_TRACK_CHUNK_LEN 8
#define MIDI_HEADER_TAG "MThd"
#define MIDI_TRACK_TAG "MTrk"
int XMIDI_ReadXMIHeader(const uchar *XMI_img, const uchar **XMIDI_data, uint *n_tracks);
int ReadIFF_IDChunk(IFF_ID_CHUNK *chunk, const uchar *read_p, const uchar **read_pp);
int Print4CC(char *fourcc);
int XMIDI_ReadEvents(XMIDIEVENT_LIST *event_list, const uchar *event_data,
size_t event_data_len, uint n_tracks);
int WriteVLQ_DW(char *write_ptr, DWORD value);
DWORD ReadVLQ_DW(const uchar *data, DWORD bytes_left, DWORD *value);
DWORD ReadVLQ2_DW(const uchar *data, DWORD bytes_left, DWORD *value);
int GetLengthAsVLQ(DWORD data);
int AddEventToList(XMIDIEVENT_LIST *event_list, int smf_size, int time,
int event, int channel, int sysex_op, int op1, int op2, int op3, int op4);
int ProcessEventList(XMIDIEVENT_LIST *event_list);
void PrintMidiOutError(unsigned long err);
} // End of namespace Saga
#endif /* SAGA_XMIDI_H_ */
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