mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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916 lines
28 KiB
C++
916 lines
28 KiB
C++
/*
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* This source code is public domain.
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*
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* Authors: Olivier Lapicque <olivierl@jps.net>,
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* Adam Goode <adam@evdebs.org> (endian and char fixes for PPC)
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*/
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#include "stdafx.h"
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#include "sndfile.h"
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//#define MED_LOG
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#ifdef MED_LOG
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extern void Log(LPCSTR s, ...);
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#endif
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//////////////////////////////////////////////////////////
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// OctaMed MED file support (import only)
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// flags
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#define MMD_FLAG_FILTERON 0x1
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#define MMD_FLAG_JUMPINGON 0x2
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#define MMD_FLAG_JUMP8TH 0x4
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#define MMD_FLAG_INSTRSATT 0x8 // instruments are attached (this is a module)
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#define MMD_FLAG_VOLHEX 0x10
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#define MMD_FLAG_STSLIDE 0x20 // SoundTracker mode for slides
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#define MMD_FLAG_8CHANNEL 0x40 // OctaMED 8 channel song
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#define MMD_FLAG_SLOWHQ 0x80 // HQ slows playing speed (V2-V4 compatibility)
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// flags2
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#define MMD_FLAG2_BMASK 0x1F
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#define MMD_FLAG2_BPM 0x20
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#define MMD_FLAG2_MIX 0x80 // uses Mixing (V7+)
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// flags3:
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#define MMD_FLAG3_STEREO 0x1 // mixing in Stereo mode
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#define MMD_FLAG3_FREEPAN 0x2 // free panning
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#define MMD_FLAG3_GM 0x4 // module designed for GM/XG compatibility
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// generic MMD tags
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#define MMDTAG_END 0
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#define MMDTAG_PTR 0x80000000 // data needs relocation
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#define MMDTAG_MUSTKNOW 0x40000000 // loader must fail if this isn't recognized
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#define MMDTAG_MUSTWARN 0x20000000 // loader must warn if this isn't recognized
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// ExpData tags
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// # of effect groups, including the global group (will
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// override settings in MMDSong struct), default = 1
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#define MMDTAG_EXP_NUMFXGROUPS 1
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#define MMDTAG_TRK_NAME (MMDTAG_PTR|1) // trackinfo tags
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#define MMDTAG_TRK_NAMELEN 2 // namelen includes zero term.
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#define MMDTAG_TRK_FXGROUP 3
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// effectinfo tags
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#define MMDTAG_FX_ECHOTYPE 1
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#define MMDTAG_FX_ECHOLEN 2
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#define MMDTAG_FX_ECHODEPTH 3
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#define MMDTAG_FX_STEREOSEP 4
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#define MMDTAG_FX_GROUPNAME (MMDTAG_PTR|5) // the Global Effects group shouldn't have name saved!
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#define MMDTAG_FX_GRPNAMELEN 6 // namelen includes zero term.
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#pragma pack(1)
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typedef struct tagMEDMODULEHEADER
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{
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DWORD id; // MMD1-MMD3
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DWORD modlen; // Size of file
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DWORD song; // Position in file for this song
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WORD psecnum;
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WORD pseq;
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DWORD blockarr; // Position in file for blocks
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DWORD mmdflags;
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DWORD smplarr; // Position in file for samples
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DWORD reserved;
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DWORD expdata; // Absolute offset in file for ExpData (0 if not present)
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DWORD reserved2;
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WORD pstate;
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WORD pblock;
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WORD pline;
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WORD pseqnum;
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WORD actplayline;
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BYTE counter;
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BYTE extra_songs; // # of songs - 1
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} MEDMODULEHEADER;
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typedef struct tagMMD0SAMPLE
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{
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WORD rep, replen;
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BYTE midich;
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BYTE midipreset;
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BYTE svol;
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signed char strans;
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} MMD0SAMPLE;
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// Sample header is immediately followed by sample data...
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typedef struct tagMMDSAMPLEHEADER
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{
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DWORD length; // length of *one* *unpacked* channel in *bytes*
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WORD type;
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// if non-negative
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// bits 0-3 reserved for multi-octave instruments, not supported on the PC
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// 0x10: 16 bit (otherwise 8 bit)
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// 0x20: Stereo (otherwise mono)
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// 0x40: Uses DeltaCode
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// 0x80: Packed data
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// -1: Synth
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// -2: Hybrid
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// if type indicates packed data, these fields follow, otherwise we go right to the data
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WORD packtype; // Only 1 = ADPCM is supported
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WORD subtype; // Packing subtype
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// ADPCM subtype
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// 1: g723_40
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// 2: g721
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// 3: g723_24
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BYTE commonflags; // flags common to all packtypes (none defined so far)
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BYTE packerflags; // flags for the specific packtype
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ULONG leftchlen; // packed length of left channel in bytes
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ULONG rightchlen; // packed length of right channel in bytes (ONLY PRESENT IN STEREO SAMPLES)
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BYTE SampleData[1]; // Sample Data
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} MMDSAMPLEHEADER;
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// MMD0/MMD1 song header
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typedef struct tagMMD0SONGHEADER
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{
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MMD0SAMPLE sample[63];
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WORD numblocks; // # of blocks
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WORD songlen; // # of entries used in playseq
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BYTE playseq[256]; // Play sequence
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WORD deftempo; // BPM tempo
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signed char playtransp; // Play transpose
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BYTE flags; // 0x10: Hex Volumes | 0x20: ST/NT/PT Slides | 0x40: 8 Channels song
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BYTE flags2; // [b4-b0]+1: Tempo LPB, 0x20: tempo mode, 0x80: mix_conv=on
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BYTE tempo2; // tempo TPL
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BYTE trkvol[16]; // track volumes
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BYTE mastervol; // master volume
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BYTE numsamples; // # of samples (max=63)
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} MMD0SONGHEADER;
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// MMD2/MMD3 song header
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typedef struct tagMMD2SONGHEADER
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{
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MMD0SAMPLE sample[63];
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WORD numblocks; // # of blocks
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WORD numsections; // # of sections
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DWORD playseqtable; // filepos of play sequence
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DWORD sectiontable; // filepos of sections table (WORD array)
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DWORD trackvols; // filepos of tracks volume (BYTE array)
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WORD numtracks; // # of tracks (max 64)
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WORD numpseqs; // # of play sequences
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DWORD trackpans; // filepos of tracks pan values (BYTE array)
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LONG flags3; // 0x1:stereo_mix, 0x2:free_panning, 0x4:GM/XG compatibility
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WORD voladj; // vol_adjust (set to 100 if 0)
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WORD channels; // # of channels (4 if =0)
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BYTE mix_echotype; // 1:normal,2:xecho
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BYTE mix_echodepth; // 1..6
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WORD mix_echolen; // > 0
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signed char mix_stereosep; // -4..4
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BYTE pad0[223];
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WORD deftempo; // BPM tempo
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signed char playtransp; // play transpose
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BYTE flags; // 0x1:filteron, 0x2:jumpingon, 0x4:jump8th, 0x8:instr_attached, 0x10:hex_vol, 0x20:PT_slides, 0x40:8ch_conv,0x80:hq slows playing speed
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BYTE flags2; // 0x80:mix_conv=on, [b4-b0]+1:tempo LPB, 0x20:tempo_mode
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BYTE tempo2; // tempo TPL
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BYTE pad1[16];
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BYTE mastervol; // master volume
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BYTE numsamples; // # of samples (max 63)
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} MMD2SONGHEADER;
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// For MMD0 the note information is held in 3 bytes, byte0, byte1, byte2. For reference we
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// number the bits in each byte 0..7, where 0 is the low bit.
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// The note is held as bits 5..0 of byte0
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// The instrument is encoded in 6 bits, bits 7 and 6 of byte0 and bits 7,6,5,4 of byte1
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// The command number is bits 3,2,1,0 of byte1, command data is in byte2:
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// For command 0, byte2 represents the second data byte, otherwise byte2
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// represents the first data byte.
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typedef struct tagMMD0BLOCK
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{
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BYTE numtracks;
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BYTE lines; // File value is 1 less than actual, so 0 -> 1 line
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} MMD0BLOCK; // BYTE data[lines+1][tracks][3];
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// For MMD1,MMD2,MMD3 the note information is carried in 4 bytes, byte0, byte1,
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// byte2 and byte3
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// The note is held as byte0 (values above 0x84 are ignored)
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// The instrument is held as byte1
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// The command number is held as byte2, command data is in byte3
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// For commands 0 and 0x19 byte3 represents the second data byte,
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// otherwise byte2 represents the first data byte.
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typedef struct tagMMD1BLOCK
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{
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WORD numtracks; // Number of tracks, may be > 64, but then that data is skipped.
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WORD lines; // Stored value is 1 less than actual, so 0 -> 1 line
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DWORD info; // Offset of BlockInfo (if 0, no block_info is present)
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} MMD1BLOCK;
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typedef struct tagMMD1BLOCKINFO
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{
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DWORD hlmask; // Unimplemented - ignore
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DWORD blockname; // file offset of block name
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DWORD blocknamelen; // length of block name (including term. 0)
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DWORD pagetable; // file offset of command page table
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DWORD cmdexttable; // file offset of command extension table
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DWORD reserved[4]; // future expansion
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} MMD1BLOCKINFO;
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// A set of play sequences is stored as an array of ULONG files offsets
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// Each offset points to the play sequence itself.
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typedef struct tagMMD2PLAYSEQ
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{
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CHAR name[32];
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DWORD command_offs; // filepos of command table
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DWORD reserved;
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WORD length;
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WORD seq[512]; // skip if > 0x8000
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} MMD2PLAYSEQ;
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// A command table contains commands that effect a particular play sequence
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// entry. The only commands read in are STOP or POSJUMP, all others are ignored
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// POSJUMP is presumed to have extra bytes containing a WORD for the position
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typedef struct tagMMDCOMMAND
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{
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WORD offset; // Offset within current sequence entry
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BYTE cmdnumber; // STOP (537) or POSJUMP (538) (others skipped)
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BYTE extra_count;
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BYTE extra_bytes[4];// [extra_count];
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} MMDCOMMAND; // Last entry has offset == 0xFFFF, cmd_number == 0 and 0 extrabytes
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typedef struct tagMMD0EXP
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{
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DWORD nextmod; // File offset of next Hdr
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DWORD exp_smp; // Pointer to extra instrument data
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WORD s_ext_entries; // Number of extra instrument entries
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WORD s_ext_entrsz; // Size of extra instrument data
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DWORD annotxt;
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DWORD annolen;
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DWORD iinfo; // Instrument names
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WORD i_ext_entries;
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WORD i_ext_entrsz;
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DWORD jumpmask;
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DWORD rgbtable;
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BYTE channelsplit[4]; // Only used if 8ch_conv (extra channel for every nonzero entry)
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DWORD n_info;
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DWORD songname; // Song name
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DWORD songnamelen;
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DWORD dumps;
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DWORD mmdinfo;
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DWORD mmdrexx;
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DWORD mmdcmd3x;
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DWORD trackinfo_ofs; // ptr to song->numtracks ptrs to tag lists
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DWORD effectinfo_ofs; // ptr to group ptrs
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DWORD tag_end;
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} MMD0EXP;
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#pragma pack()
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static void MedConvert(MODCOMMAND *p, const MMD0SONGHEADER *pmsh)
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//---------------------------------------------------------------
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{
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const BYTE bpmvals[9] = { 179,164,152,141,131,123,116,110,104};
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UINT command = p->command;
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UINT param = p->param;
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switch(command)
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{
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case 0x00: if (param) command = CMD_ARPEGGIO; else command = 0; break;
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case 0x01: command = CMD_PORTAMENTOUP; break;
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case 0x02: command = CMD_PORTAMENTODOWN; break;
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case 0x03: command = CMD_TONEPORTAMENTO; break;
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case 0x04: command = CMD_VIBRATO; break;
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case 0x05: command = CMD_TONEPORTAVOL; break;
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case 0x06: command = CMD_VIBRATOVOL; break;
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case 0x07: command = CMD_TREMOLO; break;
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case 0x0A: if (param & 0xF0) param &= 0xF0; command = CMD_VOLUMESLIDE; if (!param) command = 0; break;
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case 0x0B: command = CMD_POSITIONJUMP; break;
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case 0x0C: command = CMD_VOLUME;
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if (pmsh->flags & MMD_FLAG_VOLHEX)
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{
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if (param < 0x80)
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{
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param = (param+1) / 2;
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} else command = 0;
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} else
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{
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if (param <= 0x99)
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{
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param = (param >> 4)*10+((param & 0x0F) % 10);
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if (param > 64) param = 64;
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} else command = 0;
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}
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break;
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case 0x09: command = (param < 0x20) ? CMD_SPEED : CMD_TEMPO; break;
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case 0x0D: if (param & 0xF0) param &= 0xF0; command = CMD_VOLUMESLIDE; if (!param) command = 0; break;
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case 0x0F: // Set Tempo / Special
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// F.00 = Pattern Break
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if (!param) command = CMD_PATTERNBREAK; else
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// F.01 - F.F0: Set tempo/speed
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if (param <= 0xF0)
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{
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if (pmsh->flags & MMD_FLAG_8CHANNEL)
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{
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param = (param > 10) ? 99 : bpmvals[param-1];
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} else
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// F.01 - F.0A: Set Speed
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if (param <= 0x0A)
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{
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command = CMD_SPEED;
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} else
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// Old tempo
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if (!(pmsh->flags2 & MMD_FLAG2_BPM))
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{
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param = _muldiv(param, 5*715909, 2*474326);
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}
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// F.0B - F.F0: Set Tempo (assumes LPB=4)
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if (param > 0x0A)
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{
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command = CMD_TEMPO;
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if (param < 0x21) param = 0x21;
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if (param > 240) param = 240;
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}
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} else
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switch(param)
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{
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// F.F1: Retrig 2x
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case 0xF1:
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command = CMD_MODCMDEX;
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param = 0x93;
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break;
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// F.F2: Note Delay 2x
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case 0xF2:
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command = CMD_MODCMDEX;
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param = 0xD3;
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break;
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// F.F3: Retrig 3x
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case 0xF3:
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command = CMD_MODCMDEX;
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param = 0x92;
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break;
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// F.F4: Note Delay 1/3
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case 0xF4:
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command = CMD_MODCMDEX;
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param = 0xD2;
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break;
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// F.F5: Note Delay 2/3
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case 0xF5:
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command = CMD_MODCMDEX;
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param = 0xD4;
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break;
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// F.F8: Filter Off
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case 0xF8:
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command = CMD_MODCMDEX;
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param = 0x00;
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break;
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// F.F9: Filter On
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case 0xF9:
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command = CMD_MODCMDEX;
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param = 0x01;
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break;
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// F.FD: Very fast tone-portamento
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case 0xFD:
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command = CMD_TONEPORTAMENTO;
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param = 0xFF;
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break;
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// F.FE: End Song
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case 0xFE:
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command = CMD_SPEED;
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param = 0;
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break;
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// F.FF: Note Cut
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case 0xFF:
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command = CMD_MODCMDEX;
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param = 0xC0;
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break;
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default:
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#ifdef MED_LOG
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Log("Unknown Fxx command: cmd=0x%02X param=0x%02X\n", command, param);
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#endif
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param = command = 0;
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}
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break;
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// 11.0x: Fine Slide Up
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case 0x11:
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command = CMD_MODCMDEX;
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if (param > 0x0F) param = 0x0F;
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param |= 0x10;
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break;
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// 12.0x: Fine Slide Down
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case 0x12:
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command = CMD_MODCMDEX;
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if (param > 0x0F) param = 0x0F;
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param |= 0x20;
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break;
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// 14.xx: Vibrato
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case 0x14:
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command = CMD_VIBRATO;
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break;
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// 15.xx: FineTune
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case 0x15:
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command = CMD_MODCMDEX;
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param &= 0x0F;
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param |= 0x50;
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break;
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// 16.xx: Pattern Loop
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case 0x16:
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command = CMD_MODCMDEX;
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if (param > 0x0F) param = 0x0F;
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param |= 0x60;
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break;
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// 18.xx: Note Cut
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case 0x18:
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command = CMD_MODCMDEX;
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if (param > 0x0F) param = 0x0F;
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param |= 0xC0;
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break;
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// 19.xx: Sample Offset
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case 0x19:
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command = CMD_OFFSET;
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break;
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// 1A.0x: Fine Volume Up
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case 0x1A:
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command = CMD_MODCMDEX;
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if (param > 0x0F) param = 0x0F;
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param |= 0xA0;
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break;
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// 1B.0x: Fine Volume Down
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case 0x1B:
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command = CMD_MODCMDEX;
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if (param > 0x0F) param = 0x0F;
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param |= 0xB0;
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break;
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// 1D.xx: Pattern Break
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case 0x1D:
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command = CMD_PATTERNBREAK;
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break;
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// 1E.0x: Pattern Delay
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case 0x1E:
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command = CMD_MODCMDEX;
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if (param > 0x0F) param = 0x0F;
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param |= 0xE0;
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break;
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// 1F.xy: Retrig
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case 0x1F:
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command = CMD_RETRIG;
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param &= 0x0F;
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break;
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// 2E.xx: set panning
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case 0x2E:
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command = CMD_MODCMDEX;
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param = ((param + 0x10) & 0xFF) >> 1;
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if (param > 0x0F) param = 0x0F;
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param |= 0x80;
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break;
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default:
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#ifdef MED_LOG
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// 0x2E ?
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Log("Unknown command: cmd=0x%02X param=0x%02X\n", command, param);
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#endif
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command = param = 0;
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}
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p->command = command;
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p->param = param;
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}
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BOOL CSoundFile::ReadMed(const BYTE *lpStream, DWORD dwMemLength)
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//---------------------------------------------------------------
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{
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const MEDMODULEHEADER *pmmh;
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const MMD0SONGHEADER *pmsh;
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const MMD2SONGHEADER *pmsh2;
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const MMD0EXP *pmex;
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DWORD dwBlockArr, dwSmplArr, dwExpData, wNumBlocks;
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LPDWORD pdwTable;
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CHAR version;
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UINT deftempo;
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int playtransp = 0;
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|
|
if ((!lpStream) || (dwMemLength < 0x200)) return FALSE;
|
|
pmmh = (MEDMODULEHEADER *)lpStream;
|
|
if (((pmmh->id & 0x00FFFFFF) != 0x444D4D) || (!pmmh->song)) return FALSE;
|
|
// Check for 'MMDx'
|
|
DWORD dwSong = bswapBE32(pmmh->song);
|
|
if ((dwSong >= dwMemLength) || (dwSong + sizeof(MMD0SONGHEADER) >= dwMemLength)) return FALSE;
|
|
version = (signed char)((pmmh->id >> 24) & 0xFF);
|
|
if ((version < '0') || (version > '3')) return FALSE;
|
|
#ifdef MED_LOG
|
|
Log("\nLoading MMD%c module (flags=0x%02X)...\n", version, bswapBE32(pmmh->mmdflags));
|
|
Log(" modlen = %d\n", bswapBE32(pmmh->modlen));
|
|
Log(" song = 0x%08X\n", bswapBE32(pmmh->song));
|
|
Log(" psecnum = %d\n", bswapBE16(pmmh->psecnum));
|
|
Log(" pseq = %d\n", bswapBE16(pmmh->pseq));
|
|
Log(" blockarr = 0x%08X\n", bswapBE32(pmmh->blockarr));
|
|
Log(" mmdflags = 0x%08X\n", bswapBE32(pmmh->mmdflags));
|
|
Log(" smplarr = 0x%08X\n", bswapBE32(pmmh->smplarr));
|
|
Log(" reserved = 0x%08X\n", bswapBE32(pmmh->reserved));
|
|
Log(" expdata = 0x%08X\n", bswapBE32(pmmh->expdata));
|
|
Log(" reserved2= 0x%08X\n", bswapBE32(pmmh->reserved2));
|
|
Log(" pstate = %d\n", bswapBE16(pmmh->pstate));
|
|
Log(" pblock = %d\n", bswapBE16(pmmh->pblock));
|
|
Log(" pline = %d\n", bswapBE16(pmmh->pline));
|
|
Log(" pseqnum = %d\n", bswapBE16(pmmh->pseqnum));
|
|
Log(" actplayline=%d\n", bswapBE16(pmmh->actplayline));
|
|
Log(" counter = %d\n", pmmh->counter);
|
|
Log(" extra_songs = %d\n", pmmh->extra_songs);
|
|
Log("\n");
|
|
#endif
|
|
m_nType = MOD_TYPE_MED;
|
|
m_nSongPreAmp = 0x20;
|
|
dwBlockArr = bswapBE32(pmmh->blockarr);
|
|
dwSmplArr = bswapBE32(pmmh->smplarr);
|
|
dwExpData = bswapBE32(pmmh->expdata);
|
|
if ((dwExpData) && (dwExpData+sizeof(MMD0EXP) < dwMemLength))
|
|
pmex = (MMD0EXP *)(lpStream+dwExpData);
|
|
else
|
|
pmex = NULL;
|
|
pmsh = (MMD0SONGHEADER *)(lpStream + dwSong);
|
|
pmsh2 = (MMD2SONGHEADER *)pmsh;
|
|
#ifdef MED_LOG
|
|
if (version < '2')
|
|
{
|
|
Log("MMD0 Header:\n");
|
|
Log(" numblocks = %d\n", bswapBE16(pmsh->numblocks));
|
|
Log(" songlen = %d\n", bswapBE16(pmsh->songlen));
|
|
Log(" playseq = ");
|
|
for (UINT idbg1=0; idbg1<16; idbg1++) Log("%2d, ", pmsh->playseq[idbg1]);
|
|
Log("...\n");
|
|
Log(" deftempo = 0x%04X\n", bswapBE16(pmsh->deftempo));
|
|
Log(" playtransp = %d\n", (signed char)pmsh->playtransp);
|
|
Log(" flags(1,2) = 0x%02X, 0x%02X\n", pmsh->flags, pmsh->flags2);
|
|
Log(" tempo2 = %d\n", pmsh->tempo2);
|
|
Log(" trkvol = ");
|
|
for (UINT idbg2=0; idbg2<16; idbg2++) Log("0x%02X, ", pmsh->trkvol[idbg2]);
|
|
Log("...\n");
|
|
Log(" mastervol = 0x%02X\n", pmsh->mastervol);
|
|
Log(" numsamples = %d\n", pmsh->numsamples);
|
|
} else
|
|
{
|
|
Log("MMD2 Header:\n");
|
|
Log(" numblocks = %d\n", bswapBE16(pmsh2->numblocks));
|
|
Log(" numsections= %d\n", bswapBE16(pmsh2->numsections));
|
|
Log(" playseqptr = 0x%04X\n", bswapBE32(pmsh2->playseqtable));
|
|
Log(" sectionptr = 0x%04X\n", bswapBE32(pmsh2->sectiontable));
|
|
Log(" trackvols = 0x%04X\n", bswapBE32(pmsh2->trackvols));
|
|
Log(" numtracks = %d\n", bswapBE16(pmsh2->numtracks));
|
|
Log(" numpseqs = %d\n", bswapBE16(pmsh2->numpseqs));
|
|
Log(" trackpans = 0x%04X\n", bswapBE32(pmsh2->trackpans));
|
|
Log(" flags3 = 0x%08X\n", bswapBE32(pmsh2->flags3));
|
|
Log(" voladj = %d\n", bswapBE16(pmsh2->voladj));
|
|
Log(" channels = %d\n", bswapBE16(pmsh2->channels));
|
|
Log(" echotype = %d\n", pmsh2->mix_echotype);
|
|
Log(" echodepth = %d\n", pmsh2->mix_echodepth);
|
|
Log(" echolen = %d\n", bswapBE16(pmsh2->mix_echolen));
|
|
Log(" stereosep = %d\n", (signed char)pmsh2->mix_stereosep);
|
|
Log(" deftempo = 0x%04X\n", bswapBE16(pmsh2->deftempo));
|
|
Log(" playtransp = %d\n", (signed char)pmsh2->playtransp);
|
|
Log(" flags(1,2) = 0x%02X, 0x%02X\n", pmsh2->flags, pmsh2->flags2);
|
|
Log(" tempo2 = %d\n", pmsh2->tempo2);
|
|
Log(" mastervol = 0x%02X\n", pmsh2->mastervol);
|
|
Log(" numsamples = %d\n", pmsh->numsamples);
|
|
}
|
|
Log("\n");
|
|
#endif
|
|
wNumBlocks = bswapBE16(pmsh->numblocks);
|
|
m_nChannels = 4;
|
|
m_nSamples = pmsh->numsamples;
|
|
if (m_nSamples > 63) m_nSamples = 63;
|
|
// Tempo
|
|
m_nDefaultTempo = 125;
|
|
deftempo = bswapBE16(pmsh->deftempo);
|
|
if (!deftempo) deftempo = 125;
|
|
if (pmsh->flags2 & MMD_FLAG2_BPM)
|
|
{
|
|
UINT tempo_tpl = (pmsh->flags2 & MMD_FLAG2_BMASK) + 1;
|
|
if (!tempo_tpl) tempo_tpl = 4;
|
|
deftempo *= tempo_tpl;
|
|
deftempo /= 4;
|
|
#ifdef MED_LOG
|
|
Log("newtempo: %3d bpm (bpm=%3d lpb=%2d)\n", deftempo, bswapBE16(pmsh->deftempo), (pmsh->flags2 & MMD_FLAG2_BMASK)+1);
|
|
#endif
|
|
} else
|
|
{
|
|
deftempo = _muldiv(deftempo, 5*715909, 2*474326);
|
|
#ifdef MED_LOG
|
|
Log("oldtempo: %3d bpm (bpm=%3d)\n", deftempo, bswapBE16(pmsh->deftempo));
|
|
#endif
|
|
}
|
|
// Speed
|
|
m_nDefaultSpeed = pmsh->tempo2;
|
|
if (!m_nDefaultSpeed) m_nDefaultSpeed = 6;
|
|
if (deftempo < 0x21) deftempo = 0x21;
|
|
if (deftempo > 255)
|
|
{
|
|
while ((m_nDefaultSpeed > 3) && (deftempo > 260))
|
|
{
|
|
deftempo = (deftempo * (m_nDefaultSpeed - 1)) / m_nDefaultSpeed;
|
|
m_nDefaultSpeed--;
|
|
}
|
|
if (deftempo > 255) deftempo = 255;
|
|
}
|
|
m_nDefaultTempo = deftempo;
|
|
// Reading Samples
|
|
for (UINT iSHdr=0; iSHdr<m_nSamples; iSHdr++)
|
|
{
|
|
MODINSTRUMENT *pins = &Ins[iSHdr+1];
|
|
pins->nLoopStart = bswapBE16(pmsh->sample[iSHdr].rep) << 1;
|
|
pins->nLoopEnd = pins->nLoopStart + (bswapBE16(pmsh->sample[iSHdr].replen) << 1);
|
|
pins->nVolume = (pmsh->sample[iSHdr].svol << 2);
|
|
pins->nGlobalVol = 64;
|
|
if (pins->nVolume > 256) pins->nVolume = 256;
|
|
pins->RelativeTone = -12 * pmsh->sample[iSHdr].strans;
|
|
pins->nPan = 128;
|
|
if (pins->nLoopEnd) pins->uFlags |= CHN_LOOP;
|
|
}
|
|
// Common Flags
|
|
if (!(pmsh->flags & 0x20)) m_dwSongFlags |= SONG_FASTVOLSLIDES;
|
|
// Reading play sequence
|
|
if (version < '2')
|
|
{
|
|
UINT nbo = pmsh->songlen >> 8;
|
|
if (nbo >= MAX_ORDERS) nbo = MAX_ORDERS-1;
|
|
if (!nbo) nbo = 1;
|
|
memcpy(Order, pmsh->playseq, nbo);
|
|
playtransp = pmsh->playtransp;
|
|
} else
|
|
{
|
|
UINT nOrders, nSections;
|
|
UINT nTrks = bswapBE16(pmsh2->numtracks);
|
|
if ((nTrks >= 4) && (nTrks <= 32)) m_nChannels = nTrks;
|
|
DWORD playseqtable = bswapBE32(pmsh2->playseqtable);
|
|
UINT numplayseqs = bswapBE16(pmsh2->numpseqs);
|
|
if (!numplayseqs) numplayseqs = 1;
|
|
nOrders = 0;
|
|
nSections = bswapBE16(pmsh2->numsections);
|
|
DWORD sectiontable = bswapBE32(pmsh2->sectiontable);
|
|
if ((!nSections) || (!sectiontable) || (sectiontable >= dwMemLength-2)) nSections = 1;
|
|
nOrders = 0;
|
|
for (UINT iSection=0; iSection<nSections; iSection++)
|
|
{
|
|
UINT nplayseq = 0;
|
|
if ((sectiontable) && (sectiontable < dwMemLength-2))
|
|
{
|
|
nplayseq = lpStream[sectiontable+1];
|
|
sectiontable += 2; // WORDs
|
|
} else
|
|
{
|
|
nSections = 0;
|
|
}
|
|
UINT pseq = 0;
|
|
|
|
if ((playseqtable) && (playseqtable + nplayseq*4 < dwMemLength))
|
|
{
|
|
pseq = bswapBE32(((LPDWORD)(lpStream+playseqtable))[nplayseq]);
|
|
}
|
|
if ((pseq) && (pseq < dwMemLength - sizeof(MMD2PLAYSEQ)))
|
|
{
|
|
MMD2PLAYSEQ *pmps = (MMD2PLAYSEQ *)(lpStream + pseq);
|
|
if (!m_szNames[0][0]) memcpy(m_szNames[0], pmps->name, 31);
|
|
UINT n = bswapBE16(pmps->length);
|
|
if (pseq+n <= dwMemLength)
|
|
{
|
|
for (UINT i=0; i<n; i++)
|
|
{
|
|
UINT seqval = pmps->seq[i] >> 8;
|
|
if ((seqval < wNumBlocks) && (nOrders < MAX_ORDERS-1))
|
|
{
|
|
Order[nOrders++] = seqval;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
playtransp = pmsh2->playtransp;
|
|
while (nOrders < MAX_ORDERS) Order[nOrders++] = 0xFF;
|
|
}
|
|
// Reading Expansion structure
|
|
if (pmex)
|
|
{
|
|
// Channel Split
|
|
if ((m_nChannels == 4) && (pmsh->flags & 0x40))
|
|
{
|
|
for (UINT i8ch=0; i8ch<4; i8ch++)
|
|
{
|
|
if (pmex->channelsplit[i8ch]) m_nChannels++;
|
|
}
|
|
}
|
|
// Song Comments
|
|
UINT annotxt = bswapBE32(pmex->annotxt);
|
|
UINT annolen = bswapBE32(pmex->annolen);
|
|
if ((annotxt) && (annolen) && (annotxt+annolen <= dwMemLength))
|
|
{
|
|
m_lpszSongComments = new char[annolen+1];
|
|
memcpy(m_lpszSongComments, lpStream+annotxt, annolen);
|
|
m_lpszSongComments[annolen] = 0;
|
|
}
|
|
// Song Name
|
|
UINT songname = bswapBE32(pmex->songname);
|
|
UINT songnamelen = bswapBE32(pmex->songnamelen);
|
|
if ((songname) && (songnamelen) && (songname+songnamelen <= dwMemLength))
|
|
{
|
|
if (songnamelen > 31) songnamelen = 31;
|
|
memcpy(m_szNames[0], lpStream+songname, songnamelen);
|
|
}
|
|
// Sample Names
|
|
DWORD smpinfoex = bswapBE32(pmex->iinfo);
|
|
if (smpinfoex)
|
|
{
|
|
DWORD iinfoptr = bswapBE32(pmex->iinfo);
|
|
UINT ientries = bswapBE16(pmex->i_ext_entries);
|
|
UINT ientrysz = bswapBE16(pmex->i_ext_entrsz);
|
|
|
|
if ((iinfoptr) && (ientrysz < 256) && (iinfoptr + ientries*ientrysz < dwMemLength))
|
|
{
|
|
LPCSTR psznames = (LPCSTR)(lpStream + iinfoptr);
|
|
UINT maxnamelen = ientrysz;
|
|
if (maxnamelen > 32) maxnamelen = 32;
|
|
for (UINT i=0; i<ientries; i++) if (i < m_nSamples)
|
|
{
|
|
lstrcpyn(m_szNames[i+1], psznames + i*ientrysz, maxnamelen);
|
|
}
|
|
}
|
|
}
|
|
// Track Names
|
|
DWORD trackinfo_ofs = bswapBE32(pmex->trackinfo_ofs);
|
|
if ((trackinfo_ofs) && (trackinfo_ofs + m_nChannels * 4 < dwMemLength))
|
|
{
|
|
DWORD *ptrktags = (DWORD *)(lpStream + trackinfo_ofs);
|
|
for (UINT i=0; i<m_nChannels; i++)
|
|
{
|
|
DWORD trknameofs = 0, trknamelen = 0;
|
|
DWORD trktagofs = bswapBE32(ptrktags[i]);
|
|
if (trktagofs)
|
|
{
|
|
while (trktagofs+8 < dwMemLength)
|
|
{
|
|
DWORD ntag = bswapBE32(*(DWORD *)(lpStream + trktagofs));
|
|
if (ntag == MMDTAG_END) break;
|
|
DWORD tagdata = bswapBE32(*(DWORD *)(lpStream + trktagofs + 4));
|
|
switch(ntag)
|
|
{
|
|
case MMDTAG_TRK_NAMELEN: trknamelen = tagdata; break;
|
|
case MMDTAG_TRK_NAME: trknameofs = tagdata; break;
|
|
}
|
|
trktagofs += 8;
|
|
}
|
|
if (trknamelen > MAX_CHANNELNAME) trknamelen = MAX_CHANNELNAME;
|
|
if ((trknameofs) && (trknameofs + trknamelen < dwMemLength))
|
|
{
|
|
lstrcpyn(ChnSettings[i].szName, (LPCSTR)(lpStream+trknameofs), MAX_CHANNELNAME);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
// Reading samples
|
|
if (dwSmplArr > dwMemLength - 4*m_nSamples) return TRUE;
|
|
pdwTable = (LPDWORD)(lpStream + dwSmplArr);
|
|
for (UINT iSmp=0; iSmp<m_nSamples; iSmp++) if (pdwTable[iSmp])
|
|
{
|
|
UINT dwPos = bswapBE32(pdwTable[iSmp]);
|
|
if ((dwPos >= dwMemLength) || (dwPos + sizeof(MMDSAMPLEHEADER) >= dwMemLength)) continue;
|
|
MMDSAMPLEHEADER *psdh = (MMDSAMPLEHEADER *)(lpStream + dwPos);
|
|
UINT len = bswapBE32(psdh->length);
|
|
#ifdef MED_LOG
|
|
Log("SampleData %d: stype=0x%02X len=%d\n", iSmp, bswapBE16(psdh->type), len);
|
|
#endif
|
|
if ((len > MAX_SAMPLE_LENGTH) || (dwPos + len + 6 > dwMemLength)) len = 0;
|
|
UINT flags = RS_PCM8S, stype = bswapBE16(psdh->type);
|
|
LPSTR psdata = (LPSTR)(lpStream + dwPos + 6);
|
|
if (stype & 0x80)
|
|
{
|
|
psdata += (stype & 0x20) ? 14 : 6;
|
|
} else
|
|
{
|
|
if (stype & 0x10)
|
|
{
|
|
Ins[iSmp+1].uFlags |= CHN_16BIT;
|
|
len /= 2;
|
|
flags = (stype & 0x20) ? RS_STPCM16M : RS_PCM16M;
|
|
} else
|
|
{
|
|
flags = (stype & 0x20) ? RS_STPCM8S : RS_PCM8S;
|
|
}
|
|
if (stype & 0x20) len /= 2;
|
|
}
|
|
Ins[iSmp+1].nLength = len;
|
|
ReadSample(&Ins[iSmp+1], flags, psdata, dwMemLength - dwPos - 6);
|
|
}
|
|
// Reading patterns (blocks)
|
|
if (wNumBlocks > MAX_PATTERNS) wNumBlocks = MAX_PATTERNS;
|
|
if ((!dwBlockArr) || (dwBlockArr > dwMemLength - 4*wNumBlocks)) return TRUE;
|
|
pdwTable = (LPDWORD)(lpStream + dwBlockArr);
|
|
playtransp += (version == '3') ? 24 : 48;
|
|
for (UINT iBlk=0; iBlk<wNumBlocks; iBlk++)
|
|
{
|
|
UINT dwPos = bswapBE32(pdwTable[iBlk]);
|
|
if ((!dwPos) || (dwPos >= dwMemLength) || (dwPos >= dwMemLength - 8)) continue;
|
|
UINT lines = 64, tracks = 4;
|
|
if (version == '0')
|
|
{
|
|
const MMD0BLOCK *pmb = (const MMD0BLOCK *)(lpStream + dwPos);
|
|
lines = pmb->lines + 1;
|
|
tracks = pmb->numtracks;
|
|
if (!tracks) tracks = m_nChannels;
|
|
if ((Patterns[iBlk] = AllocatePattern(lines, m_nChannels)) == NULL) continue;
|
|
PatternSize[iBlk] = lines;
|
|
MODCOMMAND *p = Patterns[iBlk];
|
|
LPBYTE s = (LPBYTE)(lpStream + dwPos + 2);
|
|
UINT maxlen = tracks*lines*3;
|
|
if (maxlen + dwPos > dwMemLength - 2) break;
|
|
for (UINT y=0; y<lines; y++)
|
|
{
|
|
for (UINT x=0; x<tracks; x++, s+=3) if (x < m_nChannels)
|
|
{
|
|
BYTE note = s[0] & 0x3F;
|
|
BYTE instr = s[1] >> 4;
|
|
if (s[0] & 0x80) instr |= 0x10;
|
|
if (s[0] & 0x40) instr |= 0x20;
|
|
if ((note) && (note <= 132)) p->note = note + playtransp;
|
|
p->instr = instr;
|
|
p->command = s[1] & 0x0F;
|
|
p->param = s[2];
|
|
// if (!iBlk) Log("%02X.%02X.%02X | ", s[0], s[1], s[2]);
|
|
MedConvert(p, pmsh);
|
|
p++;
|
|
}
|
|
//if (!iBlk) Log("\n");
|
|
}
|
|
} else
|
|
{
|
|
MMD1BLOCK *pmb = (MMD1BLOCK *)(lpStream + dwPos);
|
|
#ifdef MED_LOG
|
|
Log("MMD1BLOCK: lines=%2d, tracks=%2d, offset=0x%04X\n",
|
|
bswapBE16(pmb->lines), bswapBE16(pmb->numtracks), bswapBE32(pmb->info));
|
|
#endif
|
|
MMD1BLOCKINFO *pbi = NULL;
|
|
BYTE *pcmdext = NULL;
|
|
lines = (pmb->lines >> 8) + 1;
|
|
tracks = pmb->numtracks >> 8;
|
|
if (!tracks) tracks = m_nChannels;
|
|
if ((Patterns[iBlk] = AllocatePattern(lines, m_nChannels)) == NULL) continue;
|
|
PatternSize[iBlk] = (WORD)lines;
|
|
DWORD dwBlockInfo = bswapBE32(pmb->info);
|
|
if ((dwBlockInfo) && (dwBlockInfo < dwMemLength - sizeof(MMD1BLOCKINFO)))
|
|
{
|
|
pbi = (MMD1BLOCKINFO *)(lpStream + dwBlockInfo);
|
|
#ifdef MED_LOG
|
|
Log(" BLOCKINFO: blockname=0x%04X namelen=%d pagetable=0x%04X &cmdexttable=0x%04X\n",
|
|
bswapBE32(pbi->blockname), bswapBE32(pbi->blocknamelen), bswapBE32(pbi->pagetable), bswapBE32(pbi->cmdexttable));
|
|
#endif
|
|
if ((pbi->blockname) && (pbi->blocknamelen))
|
|
{
|
|
DWORD nameofs = bswapBE32(pbi->blockname);
|
|
UINT namelen = bswapBE32(pbi->blocknamelen);
|
|
if ((nameofs < dwMemLength) && (nameofs+namelen < dwMemLength))
|
|
{
|
|
SetPatternName(iBlk, (LPCSTR)(lpStream+nameofs));
|
|
}
|
|
}
|
|
if (pbi->cmdexttable)
|
|
{
|
|
DWORD cmdexttable = bswapBE32(pbi->cmdexttable);
|
|
if (cmdexttable < dwMemLength - 4)
|
|
{
|
|
cmdexttable = bswapBE32(*(DWORD *)(lpStream + cmdexttable));
|
|
if ((cmdexttable) && (cmdexttable <= dwMemLength - lines*tracks))
|
|
{
|
|
pcmdext = (BYTE *)(lpStream + cmdexttable);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
MODCOMMAND *p = Patterns[iBlk];
|
|
LPBYTE s = (LPBYTE)(lpStream + dwPos + 8);
|
|
UINT maxlen = tracks*lines*4;
|
|
if (maxlen + dwPos > dwMemLength - 8) break;
|
|
for (UINT y=0; y<lines; y++)
|
|
{
|
|
for (UINT x=0; x<tracks; x++, s+=4) if (x < m_nChannels)
|
|
{
|
|
BYTE note = s[0];
|
|
if ((note) && (note <= 132))
|
|
{
|
|
int rnote = note + playtransp;
|
|
if (rnote < 1) rnote = 1;
|
|
if (rnote > 120) rnote = 120;
|
|
p->note = (BYTE)rnote;
|
|
}
|
|
p->instr = s[1];
|
|
p->command = s[2];
|
|
p->param = s[3];
|
|
if (pcmdext) p->vol = pcmdext[x];
|
|
MedConvert(p, pmsh);
|
|
p++;
|
|
}
|
|
if (pcmdext) pcmdext += tracks;
|
|
}
|
|
}
|
|
}
|
|
// Setup channel pan positions
|
|
for (UINT iCh=0; iCh<m_nChannels; iCh++)
|
|
{
|
|
ChnSettings[iCh].nPan = (((iCh&3) == 1) || ((iCh&3) == 2)) ? 0xC0 : 0x40;
|
|
ChnSettings[iCh].nVolume = 64;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
|