fixed seeking; added effect plugin support; added sample rate converter plugin

git-svn-id: http://svn.code.sf.net/p/qmmp-dev/code/trunk/qmmp@190 90c681e8-e032-0410-971d-27865f9a5e38

1 files changed, 0 insertions, 235 deletions

diff --git a/lib/iir_cfs.c b/lib/iir_cfs.c
deleted file mode 100644
index 88ecbadc6..000000000
--- a/lib/iir_cfs.c
+++ /dev/null
@@ -1,235 +0,0 @@
-/*
- *   Copyright (C) 2002-2005  Felipe Rivera <liebremx at users.sourceforge.net>
- *
- *   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.
- *
- *   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., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- *
- *   Coefficient stuff
- *
- *   $Id: iir_cfs.c,v 1.1 2005/10/17 01:57:59 liebremx Exp $
- */
-
-#include "iir_cfs.h"
-#include <stdio.h>
-#include <math.h>
-
-/*************************** 
- * IIR filter coefficients *
- ***************************/ 
-static sIIRCoefficients iir_cf10_11k_11025[10] __attribute__((aligned));
-static sIIRCoefficients iir_cf10_22k_22050[10] __attribute__((aligned));
-static sIIRCoefficients iir_cforiginal10_44100[10] __attribute__((aligned));
-static sIIRCoefficients iir_cforiginal10_48000[10] __attribute__((aligned));
-static sIIRCoefficients iir_cf10_44100[10] __attribute__((aligned));
-static sIIRCoefficients iir_cf10_48000[10] __attribute__((aligned));
-static sIIRCoefficients iir_cf15_44100[15] __attribute__((aligned));
-static sIIRCoefficients iir_cf15_48000[15] __attribute__((aligned));
-static sIIRCoefficients iir_cf25_44100[25] __attribute__((aligned));
-static sIIRCoefficients iir_cf25_48000[25] __attribute__((aligned));
-static sIIRCoefficients iir_cf31_44100[31] __attribute__((aligned));
-static sIIRCoefficients iir_cf31_48000[31] __attribute__((aligned));
-
-/****************************************************************** 
- * Definitions and data structures to calculate the coefficients
- ******************************************************************/
-static const double band_f011k[] =
-{ 31, 62, 125, 250, 500, 1000, 2000, 3000, 4000, 5500 
-};
-static const double band_f022k[] =
-{ 31, 62, 125, 250, 500, 1000, 2000, 4000, 8000, 11000 
-};
-static const double band_f010[] =
-{ 31, 62, 125, 250, 500, 1000, 2000, 4000, 8000, 16000 
-};
-static const double band_original_f010[] =
-{ 60, 170, 310, 600, 1000, 3000, 6000, 12000, 14000, 16000 
-};
-static const double band_f015[] =
-{ 25,40,63,100,160,250,400,630,1000,1600,2500,4000,6300,10000,16000
-};
-static const double band_f025[] =
-{ 20,31.5,40,50,80,100,125,160,250,315,400,500,800,
-  1000,1250,1600,2500,3150,4000,5000,8000,10000,12500,16000,20000
-};
-static const double band_f031[] =
-{ 20,25,31.5,40,50,63,80,100,125,160,200,250,315,400,500,630,800,
-  1000,1250,1600,2000,2500,3150,4000,5000,6300,8000,10000,12500,16000,20000
-};
-
-#define GAIN_F0 1.0
-#define GAIN_F1 GAIN_F0 / M_SQRT2
-
-#define SAMPLING_FREQ 44100.0
-#define TETA(f) (2*M_PI*(double)f/bands[n].sfreq)
-#define TWOPOWER(value) (value * value)
-
-#define BETA2(tf0, tf) \
-(TWOPOWER(GAIN_F1)*TWOPOWER(cos(tf0)) \
- - 2.0 * TWOPOWER(GAIN_F1) * cos(tf) * cos(tf0) \
- + TWOPOWER(GAIN_F1) \
- - TWOPOWER(GAIN_F0) * TWOPOWER(sin(tf)))
-#define BETA1(tf0, tf) \
-    (2.0 * TWOPOWER(GAIN_F1) * TWOPOWER(cos(tf)) \
-     + TWOPOWER(GAIN_F1) * TWOPOWER(cos(tf0)) \
-     - 2.0 * TWOPOWER(GAIN_F1) * cos(tf) * cos(tf0) \
-     - TWOPOWER(GAIN_F1) + TWOPOWER(GAIN_F0) * TWOPOWER(sin(tf)))
-#define BETA0(tf0, tf) \
-    (0.25 * TWOPOWER(GAIN_F1) * TWOPOWER(cos(tf0)) \
-     - 0.5 * TWOPOWER(GAIN_F1) * cos(tf) * cos(tf0) \
-     + 0.25 * TWOPOWER(GAIN_F1) \
-     - 0.25 * TWOPOWER(GAIN_F0) * TWOPOWER(sin(tf)))
-
-#define GAMMA(beta, tf0) ((0.5 + beta) * cos(tf0))
-#define ALPHA(beta) ((0.5 - beta)/2.0)
-
-struct {
-    sIIRCoefficients *coeffs;
-    const double *cfs;
-    double octave;
-    int band_count;
-    double sfreq;
-} bands[] = {
-  { iir_cf10_11k_11025,     band_f011k,         1.0,     10, 11025.0 },
-  { iir_cf10_22k_22050,     band_f022k,         1.0,     10, 22050.0 },
-  { iir_cforiginal10_44100, band_original_f010, 1.0,     10, 44100.0 },
-  { iir_cforiginal10_48000, band_original_f010, 1.0,     10, 48000.0 },
-  { iir_cf10_44100,         band_f010,          1.0,     10, 44100.0 },
-  { iir_cf10_48000,         band_f010,          1.0,     10, 48000.0 },
-  { iir_cf15_44100,         band_f015,          2.0/3.0, 15, 44100.0 },
-  { iir_cf15_48000,         band_f015,          2.0/3.0, 15, 48000.0 },
-  { iir_cf25_44100,         band_f025,          1.0/3.0, 25, 44100.0 },
-  { iir_cf25_48000,         band_f025,          1.0/3.0, 25, 48000.0 },
-  { iir_cf31_44100,         band_f031,          1.0/3.0, 31, 44100.0 },
-  { iir_cf31_48000,         band_f031,          1.0/3.0, 31, 48000.0 },
-  { 0, 0, 0, 0, 0 }
-};
-
-/*************
- * Functions *
- *************/
-
-/* Get the coeffs for a given number of bands and sampling frequency */
-sIIRCoefficients* get_coeffs(gint *bands, gint sfreq, gboolean use_xmms_original_freqs)
-{
-  sIIRCoefficients *iir_cf = 0;
-  switch(sfreq)
-  {
-    case 11025: iir_cf = iir_cf10_11k_11025;
-                *bands = 10;
-                break;
-    case 22050: iir_cf = iir_cf10_22k_22050;
-                *bands = 10;
-                break;
-    case 48000: 
-                switch(*bands)
-                {
-                  case 31: iir_cf = iir_cf31_48000; break;
-                  case 25: iir_cf = iir_cf25_48000; break;
-                  case 15: iir_cf = iir_cf15_48000; break;
-                  default:
-                           iir_cf = use_xmms_original_freqs ? 
-                             iir_cforiginal10_48000 :
-                             iir_cf10_48000;
-                           break;
-                }
-                break;
-    default:
-                switch(*bands)
-                {
-                  case 31: iir_cf = iir_cf31_44100; break;
-                  case 25: iir_cf = iir_cf25_44100; break;
-                  case 15: iir_cf = iir_cf15_44100; break;
-                  default:
-                           iir_cf = use_xmms_original_freqs ? 
-                             iir_cforiginal10_44100 :
-                             iir_cf10_44100;
-                           break;
-                }
-                break;
-  }
-  return iir_cf;
-}
-
-/* Get the freqs at both sides of F0. These will be cut at -3dB */
-static void find_f1_and_f2(double f0, double octave_percent, double *f1, double *f2)
-{
-    double octave_factor = pow(2.0, octave_percent/2.0);
-    *f1 = f0/octave_factor;
-    *f2 = f0*octave_factor;
-}
-
-/* Find the quadratic root
- * Always return the smallest root */
-static int find_root(double a, double b, double c, double *x0) {
-  double k = c-((b*b)/(4.*a));
-  double h = -(b/(2.*a));
-  double x1 = 0.;
-  if (-(k/a) < 0.)
-    return -1; 
-  *x0 = h - sqrt(-(k/a));
-  x1 = h + sqrt(-(k/a));
-  if (x1 < *x0)
-    *x0 = x1;
-  return 0;
-}
-
-/* Calculate all the coefficients as specified in the bands[] array */
-void calc_coeffs()
-{
-  int i, n;
-  double f1, f2;
-  double x0;
-
-  n = 0;
-  for (; bands[n].cfs; n++) {
-    double *freqs = (double *)bands[n].cfs;
-    for (i=0; i<bands[n].band_count; i++)
-    {
-
-      /* Find -3dB frequencies for the center freq */
-      find_f1_and_f2(freqs[i], bands[n].octave, &f1, &f2);
-      /* Find Beta */
-      if ( find_root(
-            BETA2(TETA(freqs[i]), TETA(f1)), 
-            BETA1(TETA(freqs[i]), TETA(f1)), 
-            BETA0(TETA(freqs[i]), TETA(f1)), 
-            &x0) == 0)
-      {
-        /* Got a solution, now calculate the rest of the factors */
-        /* Take the smallest root always (find_root returns the smallest one)
-         *
-         * NOTE: The IIR equation is
-         *	y[n] = 2 * (alpha*(x[n]-x[n-2]) + gamma*y[n-1] - beta*y[n-2])
-         *  Now the 2 factor has been distributed in the coefficients
-         */
-        /* Now store the coefficients */
-        bands[n].coeffs[i].beta = 2.0 * x0;
-        bands[n].coeffs[i].alpha = 2.0 * ALPHA(x0);
-        bands[n].coeffs[i].gamma = 2.0 * GAMMA(x0, TETA(freqs[i]));
-#ifdef DEBUG
-        printf("Freq[%d]: %f. Beta: %.10e Alpha: %.10e Gamma %.10e\n",
-            i, freqs[i], bands[n].coeffs[i].beta,
-            bands[n].coeffs[i].alpha, bands[n].coeffs[i].gamma);
-#endif
-      } else {
-        /* Shouldn't happen */
-        bands[n].coeffs[i].beta = 0.;
-        bands[n].coeffs[i].alpha = 0.;
-        bands[n].coeffs[i].gamma = 0.;
-        printf("  **** Where are the roots?\n");
-      }
-    }// for i
-  }//for n
-}