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undo.c
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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <system_includes.h>
#include "util.h"
#include "replay.h"
#include "gui.h"
#include "undo.h"
#ifdef __morphos__
#include <exec/lists.h>
#endif
extern struct ahx_tune *curtune;
extern struct textbox tbx[];
extern int32 pref_maxundobuf;
extern struct ahx_instrument *perf_lastinst;
extern int16 insls_lastcuri;
extern int16 inslsb_lastcuri;
extern int16 posed_lastposnr;
extern int16 trked_lastposnr;
extern struct rawbm mainbm;
struct textbox *show_tbox;
uint32 mubsizes[] = { 0, 262144, 524288, 1048576, 2097152, 4194304 };
/*****************************************************/
void free_undolists( struct ahx_tune *at )
{
struct undonode *tn, *nn;
// Clear undo system lists
#ifdef __amigaos4__
tn = (struct undonode *)IExec->GetHead(at->at_undolist);
#else
tn = (struct undonode *)GetHead(at->at_undolist);
#endif
while( tn )
{
#ifdef __amigaos4__
nn = (struct undonode *)IExec->GetSucc(&tn->un_ln);
IExec->Remove( (struct Node *)tn );
IExec->FreeSysObject( ASOT_NODE, tn );
#else
nn = (struct undonode *)GetSucc(&tn->un_ln);
Remove( (struct Node *)tn );
REMOVE(tn);
#endif
tn = nn;
}
#ifdef __amigaos4__
tn = (struct undonode *)IExec->GetHead(at->at_redolist);
#else
tn = (struct undonode *)GetHead(at->at_redolist);
#endif
while( tn )
{
#ifdef __amigaos4__
nn = (struct undonode *)IExec->GetSucc(&tn->un_ln);
IExec->Remove( (struct Node *)tn );
IExec->FreeSysObject( ASOT_NODE, tn );
#else
nn = (struct undonode *)GetSucc(&tn->un_ln);
Remove( (struct Node *)tn );
REMOVE(tn);
#endif
tn = nn;
}
at->at_undomem = 0;
}
void clear_redolist( struct ahx_tune *at )
{
struct undonode *tn, *nn;
#ifdef __amigaos4__
tn = (struct undonode *)IExec->GetHead(at->at_redolist);
#else
tn = (struct undonode *)GetHead(at->at_redolist);
#endif
while( tn )
{
#ifdef __amigaos4__
nn = (struct undonode *)IExec->GetSucc(&tn->un_ln);
at->at_undomem -= tn->un_size;
IExec->Remove( (struct Node *)tn );
IExec->FreeSysObject( ASOT_NODE, tn );
#else
nn = (struct undonode *)GetSucc(&tn->un_ln);
at->at_undomem -= tn->un_size;
Remove( (struct Node *)tn );
REMOVE(tn);
#endif
tn = nn;
}
}
void trim_undolist( struct ahx_tune *at )
{
struct undonode *un;
if( mubsizes[pref_maxundobuf] == 0 ) return;
while( at->at_undomem > mubsizes[pref_maxundobuf] )
{
#ifdef __amigaos4__
un = (struct undonode *)IExec->RemHead( at->at_undolist );
#else
un = (struct undonode *)RemHead( at->at_undolist );
#endif
if( !un )
{
// WTF?
clear_redolist( at );
at->at_undomem = 0;
return;
}
at->at_undomem -= un->un_size;
#ifdef __amigaos4__
IExec->FreeSysObject( ASOT_NODE, un );
#else
REMOVE(un);
#endif
}
}
struct undonode *alloc_undonode( struct ahx_tune *at, uint32 size )
{
struct undonode *un;
un = (struct undonode *)allocnode(size);
if( !un ) return NULL;
un->un_ln.ln_Succ = NULL;
un->un_ln.ln_Pred = NULL;
un->un_size = size;
at->at_undomem += size;
trim_undolist( at );
return un;
}
/*****************************************************/
void setbefore_posregion( struct ahx_tune *at, int32 left, int32 pos, int32 chans, int32 rows )
{
int32 size;
int32 x, y, i;
size = chans*rows*2;
at->at_rem_pbleft = left;
at->at_rem_pbpos = pos;
at->at_rem_pbchans = chans;
at->at_rem_pbrows = rows;
i=0;
for( y=pos; y<(pos+rows); y++ )
{
for( x=left; x<(left+chans); x++ )
{
at->at_rem_posbuf[i++] = at->at_Positions[y].pos_Track[x];
at->at_rem_posbuf[i++] = at->at_Positions[y].pos_Transpose[x];
}
}
}
void setafter_posregion( struct ahx_tune *at, int32 left, int32 pos, int32 chans, int32 rows )
{
struct undonode *un;
struct udat_pos_region *ud;
int32 x,y,i,size;
// Ensure we're talking about the same region
if( ( left != at->at_rem_pbleft ) ||
( pos != at->at_rem_pbpos ) ||
( chans != at->at_rem_pbchans ) ||
( rows != at->at_rem_pbrows ) )
return;
size = chans*rows*2;
un = alloc_undonode( at, sizeof( struct undonode )+sizeof( struct udat_pos_region )+(size*2) );
if( !un ) return;
ud = (struct udat_pos_region *)&un[1];
ud->before = (uint8 *)&ud[1];
ud->after = (uint8 *)&ud->before[size];
un->un_type = UNT_POS_REGION;
un->un_data = ud;
ud->left = left;
ud->pos = pos;
ud->chans = chans;
ud->rows = rows;
ud->posnr = at->at_PosNr;
ud->posed_curs = at->at_posed_curs;
ud->curlch = at->at_curlch;
i=0;
for( y=pos; y<(pos+rows); y++ )
{
for( x=left; x<(left+chans); x++ )
{
ud->before[i] = at->at_rem_posbuf[i];
ud->after[i++] = at->at_Positions[y].pos_Track[x];
ud->before[i] = at->at_rem_posbuf[i];
ud->after[i++] = at->at_Positions[y].pos_Transpose[x];
}
}
#ifdef __amigaos4__
IExec->AddTail( at->at_undolist, (struct Node *)un );
#else
AddTail( at->at_undolist, (struct Node *)un );
#endif
clear_redolist( at );
}
void setbefore_track( struct ahx_tune *at, int32 trk )
{
int32 i;
for( i=0; i<64; i++ )
at->at_rem_track[i] = at->at_Tracks[trk][i];
}
void setafter_track( struct ahx_tune *at, int32 trk )
{
struct undonode *un;
struct udat_track *ud;
int32 i;
un = alloc_undonode( at, sizeof( struct undonode )+sizeof( struct udat_track ) );
if( !un ) return;
ud = (struct udat_track *)&un[1];
un->un_ln.ln_Succ = NULL;
un->un_ln.ln_Pred = NULL;
un->un_type = UNT_TRACK;
un->un_data = ud;
ud->track = trk;
ud->posnr = at->at_PosNr;
ud->notenr = at->at_NoteNr;
ud->tracked_curs = at->at_tracked_curs;
ud->curlch = at->at_curlch;
for( i=0; i<64; i++ )
{
ud->before[i] = at->at_rem_track[i];
ud->after[i] = at->at_Tracks[trk][i];
}
#ifdef __amigaos4__
IExec->AddTail( at->at_undolist, (struct Node *)un );
#else
AddTail( at->at_undolist, (struct Node *)un );
#endif
clear_redolist( at );
}
void setbefore_string( struct ahx_tune *at, TEXT *ptr )
{
if( ptr == NULL ) return;
strcpy( at->at_rem_string, ptr );
}
void setafter_string( int32 which, struct ahx_tune *at, TEXT *ptr )
{
struct undonode *un;
struct udat_string *ud;
if( ptr == NULL ) return;
un = alloc_undonode( at, sizeof( struct undonode )+sizeof( struct udat_string )+strlen( ptr )+strlen( at->at_rem_string )+2 );
if( !un ) return;
ud = (struct udat_string *)&un[1];
ud->before = (TEXT *)&ud[1];
ud->after = &ud->before[strlen(at->at_rem_string)+1];
un->un_ln.ln_Succ = NULL;
un->un_ln.ln_Pred = NULL;
un->un_type = which;
un->un_data = ud;
ud->ptr = ptr;
strcpy( ud->before, at->at_rem_string );
strcpy( ud->after, ptr );
switch( which )
{
case UNT_STRING_INSNAME:
ud->extra = at->at_curins;
break;
}
#ifdef __amigaos4__
IExec->AddTail( at->at_undolist, (struct Node *)un );
#else
AddTail( at->at_undolist, (struct Node *)un );
#endif
clear_redolist( at );
}
void setbefore_plist( struct ahx_tune *at, struct ahx_plsentry *ptr )
{
int32 i;
for( i=0; i<256; i++ )
at->at_rem_pls_Entries[i] = ptr[i];
}
void setafter_plist( struct ahx_tune *at, struct ahx_plsentry *ptr )
{
struct undonode *un;
struct udat_whole_plist *ud;
int32 i;
un = alloc_undonode( at, sizeof( struct undonode )+sizeof( struct udat_whole_plist ) );
if( !un ) return;
ud = (struct udat_whole_plist *)&un[1];
un->un_ln.ln_Succ = NULL;
un->un_ln.ln_Pred = NULL;
un->un_type = UNT_PLE;
un->un_data = ud;
ud->ptr = ptr;
ud->insnum = at->at_curins;
for( i=0; i<256; i++ )
{
ud->before[i] = at->at_rem_pls_Entries[i];
ud->after[i] = ptr[i];
}
#ifdef __amigaos4__
IExec->AddTail( at->at_undolist, (struct Node *)un );
#else
AddTail( at->at_undolist, (struct Node *)un );
#endif
clear_redolist( at );
}
/*****************************************************/
// Simple modifications
void modify_env_w( struct ahx_tune *at, struct ahx_envelope *ptr, uint32 field, int16 new )
{
struct undonode *un;
struct udat_env_w *ud = NULL;
BOOL rembef;
rembef = FALSE;
// Check for strings of the same action
#ifdef __amigaos4__
un = (struct undonode *)IExec->GetTail( at->at_undolist );
#else
un = (struct undonode *)GetTail( at->at_undolist );
#endif
if( ( un != NULL ) &&
( un->un_type == field ) &&
( ((struct udat_env_w *)un->un_data)->ptr == ptr ) )
{
ud = (struct udat_env_w *)un->un_data;
ud->after = new;
} else {
un = alloc_undonode( at, sizeof( struct undonode )+sizeof( struct udat_env_w ) );
if( un )
{
ud = (struct udat_env_w *)&un[1];
un->un_ln.ln_Succ = NULL;
un->un_ln.ln_Pred = NULL;
un->un_type = field;
un->un_data = ud;
ud->ptr = ptr;
ud->insnum = at->at_curins;
ud->after = new;
#ifdef __amigaos4__
IExec->AddTail( at->at_undolist, (struct Node *)un );
#else
AddTail( at->at_undolist, (struct Node *)un );
#endif
clear_redolist( at );
rembef = TRUE;
}
}
switch( field )
{
case UNT_ENV_AFRAMES:
if( rembef ) ud->before = ptr->aFrames;
ptr->aFrames = new;
break;
case UNT_ENV_AVOLUME:
if( rembef ) ud->before = ptr->aVolume;
ptr->aVolume = new;
break;
case UNT_ENV_DFRAMES:
if( rembef ) ud->before = ptr->dFrames;
ptr->dFrames = new;
break;
case UNT_ENV_DVOLUME:
if( rembef ) ud->before = ptr->dVolume;
ptr->dVolume = new;
break;
case UNT_ENV_SFRAMES:
if( rembef ) ud->before = ptr->sFrames;
ptr->sFrames = new;
break;
case UNT_ENV_RFRAMES:
if( rembef ) ud->before = ptr->rFrames;
ptr->rFrames = new;
break;
case UNT_ENV_RVOLUME:
if( rembef ) ud->before = ptr->rVolume;
ptr->rVolume = new;
break;
}
}
void modify_ins_b( struct ahx_tune *at, struct ahx_instrument *ptr, uint32 field, uint8 new )
{
struct undonode *un;
struct udat_ins_b *ud = NULL;
BOOL rembef;
rembef = FALSE;
// Check for strings of the same action
#ifdef __amigaos4__
un = (struct undonode *)IExec->GetTail( at->at_undolist );
#else
un = (struct undonode *)GetTail( at->at_undolist );
#endif
if( ( un != NULL ) &&
( un->un_type == field ) &&
( ((struct udat_ins_b *)un->un_data)->ptr == ptr ) )
{
ud = (struct udat_ins_b *)un->un_data;
ud->after = new;
} else {
un = alloc_undonode( at, sizeof( struct undonode )+sizeof( struct udat_ins_b ) );
if( un )
{
ud = (struct udat_ins_b *)&un[1];
un->un_ln.ln_Succ = NULL;
un->un_ln.ln_Pred = NULL;
un->un_type = field;
un->un_data = ud;
ud->ptr = ptr;
ud->insnum = at->at_curins;
ud->after = new;
#ifdef __amigaos4__
IExec->AddTail( at->at_undolist, (struct Node *)un );
#else
AddTail( at->at_undolist, (struct Node *)un );
#endif
clear_redolist( at );
rembef = TRUE;
}
}
switch( field )
{
case UNT_INS_VOLUME:
if( rembef ) ud->before = ptr->ins_Volume;
ptr->ins_Volume = new;
break;
case UNT_INS_WAVELENGTH:
if( rembef ) ud->before = ptr->ins_WaveLength;
ptr->ins_WaveLength = new;
break;
case UNT_INS_FILTERLOWERLIMIT:
if( rembef ) ud->before = ptr->ins_FilterLowerLimit;
ptr->ins_FilterLowerLimit = new;
break;
case UNT_INS_FILTERUPPERLIMIT:
if( rembef ) ud->before = ptr->ins_FilterUpperLimit;
ptr->ins_FilterUpperLimit = new;
break;
case UNT_INS_FILTERSPEED:
if( rembef ) ud->before = ptr->ins_FilterSpeed;
ptr->ins_FilterSpeed = new;
break;
case UNT_INS_SQUARELOWERLIMIT:
if( rembef ) ud->before = ptr->ins_SquareLowerLimit;
ptr->ins_SquareLowerLimit = new;
break;
case UNT_INS_SQUAREUPPERLIMIT:
if( rembef ) ud->before = ptr->ins_SquareUpperLimit;
ptr->ins_SquareUpperLimit = new;
break;
case UNT_INS_SQUARESPEED:
if( rembef ) ud->before = ptr->ins_SquareSpeed;
ptr->ins_SquareSpeed = new;
break;
case UNT_INS_VIBRATODELAY:
if( rembef ) ud->before = ptr->ins_VibratoDelay;
ptr->ins_VibratoDelay = new;
break;
case UNT_INS_VIBRATOSPEED:
if( rembef ) ud->before = ptr->ins_VibratoSpeed;
ptr->ins_VibratoSpeed = new;
break;
case UNT_INS_VIBRATODEPTH:
if( rembef ) ud->before = ptr->ins_VibratoDepth;
ptr->ins_VibratoDepth = new;
break;
case UNT_INS_HARDCUTRELEASE:
if( rembef ) ud->before = ptr->ins_HardCutRelease;
ptr->ins_HardCutRelease = new;
break;
case UNT_INS_HARDCUTRELEASEFRAMES:
if( rembef ) ud->before = ptr->ins_HardCutReleaseFrames;
ptr->ins_HardCutReleaseFrames = new;
break;
}
}
void modify_ple_b( struct ahx_tune *at, struct ahx_instrument *ins, struct ahx_plsentry *ptr, uint32 field, int8 new )
{
struct undonode *un;
struct udat_ple_b *ud = NULL;
BOOL rembef;
rembef = FALSE;
// Check for strings of the same action
#ifdef __amigaos4__
un = (struct undonode *)IExec->GetTail( at->at_undolist );
#else
un = (struct undonode *)GetTail( at->at_undolist );
#endif
if( ( un != NULL ) &&
( un->un_type == field ) &&
( ((struct udat_ple_b *)un->un_data)->ptr == ptr ) )
{
ud = (struct udat_ple_b *)un->un_data;
ud->after = new;
} else {
un = alloc_undonode( at, sizeof( struct undonode )+sizeof( struct udat_ple_b ) );
if( un )
{
ud = (struct udat_ple_b *)&un[1];
un->un_ln.ln_Succ = NULL;
un->un_ln.ln_Pred = NULL;
un->un_type = field;
un->un_data = ud;
ud->ptr = ptr;
ud->pins = ins;
ud->insnum = at->at_curins;
ud->after = new;
ud->ptop = ins->ins_ptop;
ud->pcurx = ins->ins_pcurx;
ud->pcury = ins->ins_pcury;
#ifdef __amigaos4__
IExec->AddTail( at->at_undolist, (struct Node *)un );
#else
AddTail( at->at_undolist, (struct Node *)un );
#endif
clear_redolist( at );
rembef = TRUE;
}
}
switch( field )
{
case UNT_PLE_NOTE:
if( rembef ) ud->before = ptr->ple_Note;
ptr->ple_Note = new;
break;
case UNT_PLE_WAVEFORM:
if( rembef ) ud->before = ptr->ple_Waveform;
ptr->ple_Waveform = new;
break;
case UNT_PLE_FX0:
if( rembef ) ud->before = ptr->ple_FX[0];
ptr->ple_FX[0] = new;
break;
case UNT_PLE_FX1:
if( rembef ) ud->before = ptr->ple_FX[1];
ptr->ple_FX[1] = new;
break;
case UNT_PLE_FXPARAM0:
if( rembef ) ud->before = ptr->ple_FXParam[0];
ptr->ple_FXParam[0] = new;
break;
case UNT_PLE_FXPARAM1:
if( rembef ) ud->before = ptr->ple_FXParam[1];
ptr->ple_FXParam[1] = new;
break;
}
}
void modify_ple_w( struct ahx_tune *at, struct ahx_instrument *ins, struct ahx_plsentry *ptr, uint32 field, int16 new )
{
struct undonode *un;
struct udat_ple_w *ud = NULL;
BOOL rembef;
rembef = FALSE;
// Check for strings of the same action
#ifdef __amigaos4__
un = (struct undonode *)IExec->GetTail( at->at_undolist );
#else
un = (struct undonode *)GetTail( at->at_undolist );
#endif
if( ( un != NULL ) &&
( un->un_type == field ) &&
( ((struct udat_ple_w *)un->un_data)->ptr == ptr ) )
{
ud = (struct udat_ple_w *)un->un_data;
ud->after = new;
} else {
un = alloc_undonode( at, sizeof( struct undonode )+sizeof( struct udat_ple_w ) );
if( un )
{
ud = (struct udat_ple_w *)&un[1];
un->un_ln.ln_Succ = NULL;
un->un_ln.ln_Pred = NULL;
un->un_type = field;
un->un_data = ud;
ud->ptr = ptr;
ud->pins = ins;
ud->insnum = at->at_curins;
ud->after = new;
ud->ptop = ins->ins_ptop;
ud->pcurx = ins->ins_pcurx;
ud->pcury = ins->ins_pcury;
#ifdef __amigaos4__
IExec->AddTail( at->at_undolist, (struct Node *)un );
#else
AddTail( at->at_undolist, (struct Node *)un );
#endif
clear_redolist( at );
rembef = TRUE;
}
}
switch( field )
{
case UNT_PLE_FIXED:
if( rembef ) ud->before = ptr->ple_Fixed;
ptr->ple_Fixed = new;
break;
}
}
void modify_pls_w( struct ahx_tune *at, struct ahx_plist *ptr, uint32 field, int16 new )
{
struct undonode *un;
struct udat_pls_w *ud = NULL;
BOOL rembef;
rembef = FALSE;
// Check for strings of the same action
#ifdef __amigaos4__
un = (struct undonode *)IExec->GetTail( at->at_undolist );
#else
un = (struct undonode *)GetTail( at->at_undolist );
#endif
if( ( un != NULL ) &&
( un->un_type == field ) &&
( ((struct udat_pls_w *)un->un_data)->ptr == ptr ) )
{
ud = (struct udat_pls_w *)un->un_data;
ud->after = new;
} else {
un = alloc_undonode( at, sizeof( struct undonode )+sizeof( struct udat_pls_w ) );
if( un )
{
ud = (struct udat_pls_w *)&un[1];
un->un_ln.ln_Succ = NULL;
un->un_ln.ln_Pred = NULL;
un->un_type = field;
un->un_data = ud;
ud->ptr = ptr;
ud->insnum = at->at_curins;
ud->after = new;
#ifdef __amigaos4__
IExec->AddTail( at->at_undolist, (struct Node *)un );
#else
AddTail( at->at_undolist, (struct Node *)un );
#endif
clear_redolist( at );
rembef = TRUE;
}
}
switch( field )
{
case UNT_PLS_SPEED:
if( rembef ) ud->before = ptr->pls_Speed;
ptr->pls_Speed = new;
break;
case UNT_PLS_LENGTH:
if( rembef ) ud->before = ptr->pls_Length;
ptr->pls_Length = new;
break;
}
}
void modify_stp_b( struct ahx_tune *at, struct ahx_step *ptr, uint32 field, int8 new )
{
struct undonode *un;
struct udat_stp_b *ud = NULL;
BOOL rembef;
rembef = FALSE;
// Check for strings of the same action
#ifdef __amigaos4__
un = (struct undonode *)IExec->GetTail( at->at_undolist );
#else
un = (struct undonode *)GetTail( at->at_undolist );
#endif
if( ( un != NULL ) &&
( un->un_type == field ) &&
( ((struct udat_stp_b *)un->un_data)->ptr == ptr ) )
{
ud = (struct udat_stp_b *)un->un_data;
ud->after = new;
} else {
un = alloc_undonode( at, sizeof( struct undonode )+sizeof( struct udat_stp_b ) );
if( un )
{
ud = (struct udat_stp_b *)&un[1];
un->un_ln.ln_Succ = NULL;
un->un_ln.ln_Pred = NULL;
un->un_type = field;
un->un_data = ud;
ud->ptr = ptr;
ud->after = new;
ud->posnr = at->at_PosNr;
ud->notenr = at->at_NoteNr;
ud->tracked_curs = at->at_tracked_curs;
ud->curlch = at->at_curlch;
#ifdef __amigaos4__
IExec->AddTail( at->at_undolist, (struct Node *)un );
#else
AddTail( at->at_undolist, (struct Node *)un );
#endif
clear_redolist( at );
rembef = TRUE;
}
}
switch( field )
{
case UNT_STP_NOTE:
if( rembef ) ud->before = ptr->stp_Note;
ptr->stp_Note = new;
break;
case UNT_STP_INSTRUMENT:
if( rembef ) ud->before = ptr->stp_Instrument;
ptr->stp_Instrument = new;
break;
case UNT_STP_FX:
if( rembef ) ud->before = ptr->stp_FX;
ptr->stp_FX = new;
break;
case UNT_STP_FXB:
if( rembef ) ud->before = ptr->stp_FXb;
ptr->stp_FXb = new;
break;
case UNT_STP_FXPARAM:
if( rembef ) ud->before = ptr->stp_FXParam;
ptr->stp_FXParam = new;
break;
case UNT_STP_FXBPARAM:
if( rembef ) ud->before = ptr->stp_FXbParam;
ptr->stp_FXbParam = new;
break;
}
}
void modify_stp_w( struct ahx_tune *at, struct ahx_step *ptr, uint32 field, int16 new )
{
struct undonode *un;
struct udat_stp_w *ud = NULL;
BOOL rembef;
rembef = FALSE;
// Check for strings of the same action
#ifdef __amigaos4__
un = (struct undonode *)IExec->GetTail( at->at_undolist );
#else
un = (struct undonode *)GetTail( at->at_undolist );
#endif
if( ( un != NULL ) &&
( un->un_type == field ) &&
( ((struct udat_stp_w *)un->un_data)->ptr == ptr ) )
{
ud = (struct udat_stp_w *)un->un_data;
ud->after = new;
} else {
un = alloc_undonode( at, sizeof( struct undonode )+sizeof( struct udat_stp_w ) );
if( un )
{
ud = (struct udat_stp_w *)&un[1];
un->un_ln.ln_Succ = NULL;
un->un_ln.ln_Pred = NULL;
un->un_type = field;
un->un_data = ud;
ud->ptr = ptr;
ud->after = new;
ud->posnr = at->at_PosNr;
ud->notenr = at->at_NoteNr;
ud->tracked_curs = at->at_tracked_curs;
ud->curlch = at->at_curlch;
#ifdef __amigaos4__
IExec->AddTail( at->at_undolist, (struct Node *)un );
#else
AddTail( at->at_undolist, (struct Node *)un );
#endif
clear_redolist( at );
rembef = TRUE;
}
}
switch( field )
{
case UNT_STP_NOTEANDINS:
if( rembef ) ud->before = (ptr->stp_Note<<8)|(ptr->stp_Instrument);
ptr->stp_Note = new>>8;
ptr->stp_Instrument = new & 0xff;
break;
case UNT_STP_FXANDPARAM:
if( rembef ) ud->before = (ptr->stp_FX<<8)|(ptr->stp_FXParam);
ptr->stp_FX = new>>8;
ptr->stp_FXParam = new & 0xff;
break;
case UNT_STP_FXBANDPARAM:
if( rembef ) ud->before = (ptr->stp_FXb<<8)|(ptr->stp_FXbParam);
ptr->stp_FXb = new>>8;
ptr->stp_FXbParam = new & 0xff;
break;
}
}
void modify_pos_b( struct ahx_tune *at, struct ahx_position *ptr, int32 chan, uint32 field, int8 new )
{
struct undonode *un;
struct udat_pos_b *ud = NULL;
BOOL rembef;
rembef = FALSE;
// Check for strings of the same action
#ifdef __amigaos4__
un = (struct undonode *)IExec->GetTail( at->at_undolist );
#else
un = (struct undonode *)GetTail( at->at_undolist );
#endif
if( ( un != NULL ) &&
( un->un_type == field ) &&
( ((struct udat_pos_b *)un->un_data)->chan == chan ) &&
( ((struct udat_pos_b *)un->un_data)->ptr == ptr ) )
{
ud = (struct udat_pos_b *)un->un_data;
ud->after = new;
} else {
un = alloc_undonode( at, sizeof( struct undonode )+sizeof( struct udat_pos_b ) );
if( un )
{
ud = (struct udat_pos_b *)&un[1];
un->un_ln.ln_Succ = NULL;
un->un_ln.ln_Pred = NULL;
un->un_type = field;
un->un_data = ud;
ud->ptr = ptr;
ud->chan = chan;
ud->after = new;
ud->posnr = at->at_PosNr;
ud->posed_curs = at->at_posed_curs;
ud->curlch = at->at_curlch;
#ifdef __amigaos4__
IExec->AddTail( at->at_undolist, (struct Node *)un );
#else
AddTail( at->at_undolist, (struct Node *)un );
#endif
clear_redolist( at );
rembef = TRUE;
}
}
switch( field )
{
case UNT_POS_TRACK:
if( rembef ) ud->before = ptr->pos_Track[chan];
ptr->pos_Track[chan] = new;
break;
case UNT_POS_TRANS:
if( rembef ) ud->before = ptr->pos_Transpose[chan];
ptr->pos_Transpose[chan] = new;
break;
}
}
void modify_tune_b( struct ahx_tune *at, uint32 field, int8 new )
{
struct undonode *un;
struct udat_tune_b *ud = NULL;
BOOL rembef;
rembef = FALSE;
// Check for strings of the same action
#ifdef __amigaos4__
un = (struct undonode *)IExec->GetTail( at->at_undolist );
#else
un = (struct undonode *)GetTail( at->at_undolist );
#endif
if( ( un != NULL ) &&
( un->un_type == field ) )
{
ud = (struct udat_tune_b *)un->un_data;
ud->after = new;
} else {
un = alloc_undonode( at, sizeof( struct undonode )+sizeof( struct udat_tune_b ) );
if( un )
{
ud = (struct udat_tune_b *)&un[1];
un->un_ln.ln_Succ = NULL;
un->un_ln.ln_Pred = NULL;
un->un_type = field;
un->un_data = ud;
ud->after = new;
#ifdef __amigaos4__
IExec->AddTail( at->at_undolist, (struct Node *)un );
#else
AddTail( at->at_undolist, (struct Node *)un );
#endif
clear_redolist( at );
rembef = TRUE;
}
}
switch( field )
{
case UNT_TRACKLEN:
if( rembef ) ud->before = at->at_TrackLength;
at->at_TrackLength = new;
break;
case UNT_CHANNELS:
if( rembef ) ud->before = at->at_Channels;
at->at_Channels = new;
break;
case UNT_MIXGAIN:
if( rembef ) ud->before = at->at_mixgainP;
at->at_mixgainP = new;
break;
case UNT_SPMUL:
if( rembef ) ud->before = at->at_SpeedMultiplier;