aboutsummaryrefslogtreecommitdiff
path: root/externals/grill/xsample/source/main.cpp
blob: 3cec1b66b0b32f0ddeaf31e0c56e06e6f20d680d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
/*

xsample - extended sample objects for Max/MSP and pd (pure data)

Copyright (c) 2001-2004 Thomas Grill (xovo@gmx.net)
For information on usage and redistribution, and for a DISCLAIMER OF ALL
WARRANTIES, see the file, "license.txt," in this distribution.  

*/

#include "main.h"


// Initialization function for xsample library
static V xsample_main()
{
	flext::post("-------------------------------");
	flext::post("xsample objects, version " XSAMPLE_VERSION);
    flext::post("");
	flext::post("  xrecord~, xplay~, xgroove~   ");
    flext::post("  (C)2001-2004 Thomas Grill    ");
#ifdef FLEXT_DEBUG
    flext::post("          DEBUG BUILD          ");
#endif
	flext::post("-------------------------------");

	// call the objects' setup routines
	FLEXT_DSP_SETUP(xrecord);
	FLEXT_DSP_SETUP(xplay);
	FLEXT_DSP_SETUP(xgroove);
}

// setup the library
FLEXT_LIB_SETUP(xsample,xsample_main)

// ------------------------------

void xsample::setup(t_classid c)
{
	FLEXT_CADDBANG(c,0,m_start);
	FLEXT_CADDMETHOD_(c,0,"start",m_start);
	FLEXT_CADDMETHOD_(c,0,"stop",m_stop);

	FLEXT_CADDMETHOD_(c,0,"set",m_set);
	FLEXT_CADDMETHOD_(c,0,"print",m_print);
	FLEXT_CADDMETHOD_(c,0,"refresh",m_refresh);
	FLEXT_CADDMETHOD_(c,0,"reset",m_reset);

	FLEXT_CADDATTR_VAR(c,"buffer",mg_buffer,ms_buffer);
	FLEXT_CADDATTR_VAR_E(c,"units",unitmode,m_units);
	FLEXT_CADDATTR_VAR_E(c,"sclmode",sclmode,m_sclmode);
	FLEXT_CADDATTR_GET(c,"scale",s2u);
}

xsample::xsample():
	buf(NULL),
#if FLEXT_SYS == FLEXT_SYS_MAX
	unitmode(xsu_ms),	   // Max/MSP defaults to milliseconds
#else
	unitmode(xsu_sample),  // PD defaults to samples
#endif
	sclmode(xss_unitsinbuf),
	curmin(0),curmax(1<<31)
{}
	
xsample::~xsample()
{
//	m_enable(false); // switch off DSP

	if(buf) delete buf; 
}


BL xsample::bufchk() 
{ 
	if(buf->Valid()) {
		if(buf->Update()) {
//			post("%s - buffer updated",thisName()); 
			m_refresh(); 
		}
		return true; 
	}
	else
		return false; 
}

I xsample::m_set(I argc,const t_atom *argv)
{
	const t_symbol *sym = argc >= 1?GetASymbol(argv[0]):NULL;
	int r = buf->Set(sym);
	if(sym && r < 0) post("%s - can't find buffer %s",thisName(),GetString(sym));
	return r;
}

BL xsample::m_refresh()
{
	BL ret;
	if(buf->Set()) { s_dsp(); ret = true; } // channel count may have changed
	else ret = false;
	
	m_units();
	m_sclmode();	
	// realize positions... 2 times bufchk()!!
	m_min((F)curmin*s2u); // also checks pos
	m_max((F)curmax*s2u); // also checks pos

	return ret;
}

BL xsample::m_reset()
{
	BL ret;
	if(buf->Set()) { s_dsp(); ret = true; } // channel count may have changed
	else ret = false;
	
	// now... 4 times bufchk()!! \todo get rid of that
	m_units();
	m_sclmode();	
	m_min(0);
    m_max(buf->Frames()*s2u);

	return ret;
}

V xsample::m_loadbang() 
{
	m_reset();
}

V xsample::m_units(xs_unit mode)
{
	if(mode != xsu__) unitmode = mode;

	switch(unitmode) {
		case xsu_sample: // samples
			s2u = 1;
			break;
		case xsu_buffer: // buffer size
			s2u = bufchk()?1.f/buf->Frames():0;
			break;
		case xsu_ms: // ms
			s2u = 1000.f/Samplerate();
			break;
		case xsu_s: // s
			s2u = 1.f/Samplerate();
			break;
		default:
			post("%s: Unknown unit mode",thisName());
	}
}

V xsample::m_sclmode(xs_sclmd mode)
{
	if(mode != xss__) sclmode = mode;

	switch(sclmode) {
		case 0: // samples/units
			sclmin = 0; sclmul = s2u;
			break;
		case 1: // samples/units from recmin to recmax
			sclmin = curmin; sclmul = s2u;
			break;
		case 2: // unity between 0 and buffer size
			sclmin = 0; sclmul = (bufchk() && buf->Frames())?1.f/buf->Frames():0;
			break;
		case 3:	// unity between recmin and recmax
			sclmin = curmin; sclmul = curmin != curmax?1.f/(curmax-curmin):0;
			break;
		default:
			post("%s: Unknown scale mode",thisName());
	}
}

V xsample::m_min(F mn)
{
//	if(!bufchk()) return; // if invalid do nothing (actually, it should be delayed)

	if(s2u) {
		mn /= s2u;  // conversion to samples
		if(mn < 0) mn = 0;
		else if(mn > curmax) mn = (F)curmax;
		curmin = (I)(mn+.5);

		m_sclmode();
	}
}

V xsample::m_max(F mx)
{
//	if(!bufchk()) return; // if invalid do nothing (actually, it should be delayed)

	if(s2u) {
		mx /= s2u;  // conversion to samples
		if(mx > buf->Frames()) mx = (F)buf->Frames();
		else if(mx < curmin) mx = (F)curmin;
		curmax = (I)(mx+.5);

		m_sclmode();
	}
}

V xsample::m_all()
{
	if(!bufchk()) return; // if invalid do nothing (actually, it should be delayed)

	curmin = 0; curmax = buf->Frames();
	m_sclmode();
}

V xsample::m_dsp(I /*n*/,S *const * /*insigs*/,S *const * /*outsigs*/)
{
	// this is hopefully called at change of sample rate ?!

	if(!m_refresh()) s_dsp();
}