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-rw-r--r--volctl~/volctl~.c369
1 files changed, 369 insertions, 0 deletions
diff --git a/volctl~/volctl~.c b/volctl~/volctl~.c
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index 0000000..946beb3
--- /dev/null
+++ b/volctl~/volctl~.c
@@ -0,0 +1,369 @@
+/* Copyright (c) 2004 Tim Blechmann.
+ * For information on usage and redistribution, and for a DISCLAIMER OF ALL
+ * WARRANTIES, see the file, "gpl.txt" in this distribution.
+ *
+ * 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.
+ *
+ * See file LICENSE for further informations on licensing terms.
+ *
+ * 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.
+ *
+ * Based on PureData by Miller Puckette and others.
+ *
+ * coded while listening to: Julien Ottavi: Nervure Magnetique
+ * */
+
+
+#include "m_pd.h"
+#include "m_simd.h"
+
+
+/* ----------------------------- volctl ----------------------------- */
+
+static t_class *volctl_class;
+
+typedef struct _volctl
+{
+ t_object x_obj;
+ t_float x_f;
+
+ t_float x_h; //interpolation time
+ t_float x_value; //current factor
+ t_float x_target; //target factor
+
+ int x_ticksleft; //dsp ticks to go
+ t_float x_samples_per_ms; //ms per sample
+ t_float x_slope; //slope
+ t_float * x_slopes; //slopes for simd
+ t_float x_slope_step;
+ int x_line;
+ int x_blocksize;
+ t_float x_1overblocksize;
+} t_volctl;
+
+void *volctl_new(t_symbol *s, int argc, t_atom *argv)
+{
+ if (argc > 3) post("volctl~: extra arguments ignored");
+
+ t_volctl *x = (t_volctl *)pd_new(volctl_class);
+ inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("f1"));
+ inlet_settip(x->x_obj.ob_inlet,gensym("factor"));
+ x->x_value = atom_getfloatarg(0, argc, argv);
+
+ t_inlet * time = floatinlet_new(&x->x_obj, &x->x_h);
+ inlet_settip(time,gensym("interpolation_time"));
+ x->x_h = atom_getfloatarg(1, argc, argv);
+
+ x->x_samples_per_ms = 44100.f / 1000.f; // assume default samplerate
+ x->x_blocksize = 64;
+ x->x_1overblocksize = 1.f/64.f;
+
+ outlet_new(&x->x_obj, &s_signal);
+ x->x_f = 0;
+
+ x->x_slopes = getalignedbytes(4*sizeof(t_float));
+
+ return (x);
+}
+
+static void volctl_free(t_volctl *x)
+{
+ freealignedbytes(x->x_slopes, 4*sizeof(t_float));
+}
+
+static t_int *volctl_perform(t_int *w)
+{
+ t_volctl * x = (t_volctl *)(w[1]);
+ t_float *in = (t_float *)(w[2]);
+ t_float *out = (t_float *)(w[3]);
+ int n = (int)(w[4]);
+
+
+ if (x->x_ticksleft)
+ {
+ t_float f = x->x_value;
+ t_float x_slope = x->x_slope;
+
+ x->x_ticksleft--;
+ while (n--)
+ {
+ f+=x_slope;
+ *out++ = *in++ * f;
+ }
+ x->x_value = f;
+ }
+ else
+ {
+ t_float f = x->x_target;
+ while (n--) *out++ = *in++ * f;
+ }
+
+ return (w+5);
+}
+
+
+static t_int *volctl_perf8(t_int *w)
+{
+ t_volctl * x = (t_volctl *)(w[1]);
+ t_float *in = (t_float *)(w[2]);
+ t_float *out = (t_float *)(w[3]);
+ int n = (int)(w[4]);
+
+ if (x->x_ticksleft)
+ {
+ t_float f = x->x_value;
+
+ t_float x_slope = x->x_slope;
+ x->x_ticksleft--;
+ n = n>>3;
+ while (n--)
+ {
+ *out++ = *in++ * f;
+ f+=x_slope;
+ *out++ = *in++ * f;
+ f+=x_slope;
+ *out++ = *in++ * f;
+ f+=x_slope;
+ *out++ = *in++ * f;
+ f+=x_slope;
+ *out++ = *in++ * f;
+ f+=x_slope;
+ *out++ = *in++ * f;
+ f+=x_slope;
+ *out++ = *in++ * f;
+ f+=x_slope;
+ *out++ = *in++ * f;
+ f+=x_slope;
+ }
+ x->x_value = f;
+ }
+ else
+ {
+ t_float f = x->x_target;
+
+ if (f)
+ for (; n; n -= 8, in += 8, out += 8)
+ {
+ t_float f0 = in[0], f1 = in[1], f2 = in[2], f3 = in[3];
+ t_float f4 = in[4], f5 = in[5], f6 = in[6], f7 = in[7];
+
+ out[0] = f0 * f; out[1] = f1 * f; out[2] = f2 * f; out[3] = f3 * f;
+ out[4] = f4 * f; out[5] = f5 * f; out[6] = f6 * f; out[7] = f7 * f;
+ }
+ else
+ for (; n; n -= 8, in += 8, out += 8)
+ {
+ out[0] = 0; out[1] = 0; out[2] = 0; out[3] = 0;
+ out[4] = 0; out[5] = 0; out[6] = 0; out[7] = 0;
+ }
+
+ }
+ return (w+5);
+}
+
+
+static t_int *volctl_perf_simd(t_int *w)
+{
+ t_volctl * x = (t_volctl *)(w[1]);
+ t_float *in = (t_float *)(w[2]);
+ t_float *out = (t_float *)(w[3]);
+ int n = (int)(w[4]);
+
+ if (x->x_ticksleft)
+ {
+#if defined(__GNUC__) && (defined(_X86_) || defined(__i386__) || defined(__i586__) || defined(__i686__))
+ asm(
+ ".set T_FLOAT,4 \n"
+ "movss (%3),%%xmm0 \n" /* value */
+ "shufps $0, %%xmm0, %%xmm0 \n"
+ "movaps (%4), %%xmm1 \n" /* x_slopes */
+ "addps %%xmm0, %%xmm1 \n"
+
+ "movss (%5), %%xmm0 \n"
+ "shufps $0, %%xmm0, %%xmm0 \n" /* x_slope_step */
+
+ "shrl $4, %2 \n" /* n>>4 */
+
+ "1: \n"
+ "movaps (%0), %%xmm2 \n"
+ "mulps %%xmm1, %%xmm2 \n"
+ "movaps %%xmm2, (%1) \n"
+ "addps %%xmm0, %%xmm1 \n"
+
+ "movaps 4*T_FLOAT(%0), %%xmm2 \n"
+ "mulps %%xmm1, %%xmm2 \n"
+ "movaps %%xmm2, 4*T_FLOAT(%1) \n"
+ "addps %%xmm0, %%xmm1 \n"
+
+ "movaps 8*T_FLOAT(%0), %%xmm2 \n"
+ "mulps %%xmm1, %%xmm2 \n"
+ "movaps %%xmm2, 8*T_FLOAT(%1) \n"
+ "addps %%xmm0, %%xmm1 \n"
+
+ "movaps 12*T_FLOAT(%0), %%xmm2 \n"
+ "mulps %%xmm1, %%xmm2 \n"
+ "movaps %%xmm2, 12*T_FLOAT(%1) \n"
+ "addps %%xmm0, %%xmm1 \n" /* one instr. obsolete */
+
+ "addl $16*T_FLOAT, %0 \n"
+ "addl $16*T_FLOAT, %1 \n"
+ "loop 1b \n"
+
+ :
+ :"r"(in), "r"(out), "c"(n), "r"(&(t_float)(x->x_value)),
+ "r"((t_float*)x->x_slopes), "r"(&(t_float)(x->x_slope_step))
+ :"%xmm0", "%xmm1", "%xmm2");
+
+#elif defined(NT) && defined(_MSC_VER)
+ __asm {
+ mov ecx,n
+ mov ebx,in
+ mov edx,out
+
+ movss xmm0,xmmword prt [x->x_value]
+ shufps xmm0,xmm0,0
+ movaps xmm1,xmmword prt [x->x_slopes]
+ addps xmm1,xmm0
+
+ movss xmm0,xmmword prt [x->x_slope_step]
+ shufps xmm0,xmm0,0
+
+ shr ecx,4
+
+ loopa:
+ movaps xmm2,xmmword ptr[ebx]
+ mulps xmm2,xmm1
+ movaps xmmword prt[edx],xmm2
+ addps xmm1,xmm0
+
+ movaps xmm2,xmmword ptr[ebx+4*TYPE t_float]
+ mulps xmm2,xmm1
+ movaps xmmword prt[edx+4*TYPE t_float],xmm2
+ addps xmm1,xmm0
+
+ movaps xmm2,xmmword ptr[ebx+8*TYPE t_float]
+ mulps xmm2,xmm1
+ movaps xmmword prt[edx+8*TYPE t_float],xmm2
+ addps xmm1,xmm0
+
+ movaps xmm2,xmmword ptr[ebx+12*TYPE t_float]
+ mulps xmm2,xmm1
+ movaps xmmword prt[edx+12*TYPE t_float],xmm2
+ addps xmm1,xmm0
+
+ add ebx,16*TYPE t_float
+ add edx,16*TYPE t_float
+ loop loopa
+ }
+
+#else /* not yet implemented ... */
+ t_float f = x->x_value;
+ t_float x_slope = x->x_slope;
+
+ n = n>>3;
+ while (n--)
+ {
+ *out++ = *in++ * f;
+ f+=x_slope;
+ *out++ = *in++ * f;
+ f+=x_slope;
+ *out++ = *in++ * f;
+ f+=x_slope;
+ *out++ = *in++ * f;
+ f+=x_slope;
+ *out++ = *in++ * f;
+ f+=x_slope;
+ *out++ = *in++ * f;
+ f+=x_slope;
+ *out++ = *in++ * f;
+ f+=x_slope;
+ *out++ = *in++ * f;
+ f+=x_slope;
+ }
+#endif
+
+ x->x_ticksleft--;
+ x->x_value += n*(x->x_slope);
+ }
+ else
+ {
+ if (x->x_target == 0.f)
+ zerovec_simd(out, n);
+ else
+ if (x->x_target == 1.f)
+ {
+ if (in != out)
+ copyvec_simd(out, in, n);
+ }
+ else
+ {
+ t_int args[6]={0,
+ (t_int)in,
+ (t_int)&x->x_target,
+ (t_int)out,
+ n,
+ 0};
+ scalartimes_perf_simd(args);
+ }
+ }
+ return (w+5);
+}
+
+
+static void volctl_set(t_volctl *x, t_float f)
+{
+ t_float slope;
+ int i;
+ int samplesleft = x->x_h * x->x_samples_per_ms;
+ samplesleft += x->x_blocksize - ( samplesleft & (x->x_blocksize - 1));
+ x->x_ticksleft = (int) (t_float)samplesleft * x->x_1overblocksize;
+
+ slope = (f - x->x_value) / samplesleft;
+ x->x_slope = slope;
+
+ for (i = 0; i != 4; ++i)
+ {
+ x->x_slopes[i] = i*slope;
+ }
+ x->x_slope_step = 4*slope;
+
+ x->x_target = f;
+}
+
+static void volctl_dsp(t_volctl *x, t_signal **sp)
+{
+ const int n = sp[0]->s_n;
+ if (n&7)
+ dsp_add(volctl_perform, 4, x, sp[0]->s_vec, sp[1]->s_vec, n);
+ else
+ {
+ if(SIMD_CHECK2(n,sp[0]->s_vec,sp[1]->s_vec))
+ dsp_add(volctl_perf_simd, 4, x, sp[0]->s_vec, sp[1]->s_vec, n);
+ else
+ dsp_add(volctl_perf8, 4, x, sp[0]->s_vec, sp[1]->s_vec, n);
+ }
+
+ x->x_blocksize = n;
+ x->x_1overblocksize = 1./n;
+ x->x_samples_per_ms = sp[0]->s_sr / 1000.f;
+}
+
+void volctl_tilde_setup(void)
+{
+ volctl_class = class_new(gensym("volctl~"), (t_newmethod)volctl_new,
+ (t_method)volctl_free, sizeof(t_volctl), 0, A_GIMME, 0);
+ CLASS_MAINSIGNALIN(volctl_class, t_volctl, x_f);
+ class_addmethod(volctl_class, (t_method)volctl_dsp, gensym("dsp"), 0);
+ class_addmethod(volctl_class, (t_method)volctl_set, gensym("f1"),A_FLOAT,0);
+ class_settip(volctl_class,gensym("signal"));
+}
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