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118 lines
3.3 KiB
C++
118 lines
3.3 KiB
C++
/* ScummVM - Scumm Interpreter
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* Copyright (C) 2004 The ScummVM project
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*
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* The ReInherit Engine is (C)2000-2003 by Daniel Balsom.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* $Header$
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*
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*/
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/*
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Description:
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XMIDI conversion routines
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Notes:
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Code adapted from XMILoader by Keet ( fox@foxpaws.net ), (C)2000
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*/
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#ifndef SAGA_XMIDI_H_
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#define SAGA_XMIDI_H_
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namespace Saga {
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#define XMIDI_TIMEDIV 0x3C
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/* XMIDI/IFF 4CC codes
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\*--------------------------------------------------------------------------*/
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#define IFF_FORMAT_4CC "FORM"
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#define IFF_CATEGORY_4CC "CAT "
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#define XMI_DESC_4CC "XDIR"
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#define XMI_INFO_4CC "INFO"
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#define XMIDI_DESC_4CC "XMID"
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#define XMIDI_TIMBRE_4CC "TIMB"
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#define XMIDI_EVENT_4CC "EVNT"
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/* IFF/XMI Data structures
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\*--------------------------------------------------------------------------*/
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struct IFF_ID_CHUNK {
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char id_4cc[4]; /* 4cc */
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ulong chunk_len; /* u32_be */
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char desc_4cc[4]; /* 4cc */
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};
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#define IFF_ID_CHUNK_HEADERLEN 12
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struct XMI_INFO_CHUNK {
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char id_4cc[4]; /* 4cc */
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ulong chunk_len; /* u32_be */
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uint n_tracks; /* u16_le */
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};
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struct XMI_TIMB_CHUNK {
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char id_4cc[4]; /* 4cc */
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ulong chunk_len; /* u32_be */
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};
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struct XMI_EVENT_CHUNK {
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char id_4cc[4]; /* 4cc */
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ulong chunk_len; /* u32_be */
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};
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typedef struct SMF_HEADER_CHUNK_tag {
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char smf_id[4]; /* u8 */
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unsigned int smf_header_len; /* u32_be */
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unsigned short smf_format; /* u16_be */
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unsigned short smf_ntracks; /* u16_be */
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union {
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unsigned short ppqn; /* u16_be */
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signed char smpte[2];
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} time_division;
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} SMF_HEADER_CHUNK;
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struct SMF_TRACK_CHUNK {
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char smf_track_id[4];
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unsigned int smf_track_len;
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};
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#define MIDI_HEADER_LEN 14
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#define MIDI_HEADER_CHUNK_LEN 6
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#define MIDI_TRACK_CHUNK_LEN 8
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#define MIDI_HEADER_TAG "MThd"
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#define MIDI_TRACK_TAG "MTrk"
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int XMIDI_ReadXMIHeader(const uchar *XMI_img, const uchar **XMIDI_data, uint *n_tracks);
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int ReadIFF_IDChunk(IFF_ID_CHUNK *chunk, const uchar *read_p, const uchar **read_pp);
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int Print4CC(char *fourcc);
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int XMIDI_ReadEvents(XMIDIEVENT_LIST *event_list, const uchar *event_data,
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size_t event_data_len, uint n_tracks);
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int WriteVLQ_DW(char *write_ptr, DWORD value);
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DWORD ReadVLQ_DW(const uchar *data, DWORD bytes_left, DWORD *value);
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DWORD ReadVLQ2_DW(const uchar *data, DWORD bytes_left, DWORD *value);
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int GetLengthAsVLQ(DWORD data);
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int AddEventToList(XMIDIEVENT_LIST *event_list, int smf_size, int time,
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int event, int channel, int sysex_op, int op1, int op2, int op3, int op4);
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int ProcessEventList(XMIDIEVENT_LIST *event_list);
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void PrintMidiOutError(unsigned long err);
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} // End of namespace Saga
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#endif /* SAGA_XMIDI_H_ */
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