From 3cd3a9f82068bea3a37e4efe0ee3752ecb044cce Mon Sep 17 00:00:00 2001
From: drowe67 <david@rowetel.com>
Date: Thu, 13 Jul 2023 08:49:31 +0930
Subject: rm misc directory

---
 misc/extract.c | 117 ---------------------------------------------------------
 1 file changed, 117 deletions(-)
 delete mode 100644 misc/extract.c

(limited to 'misc/extract.c')

diff --git a/misc/extract.c b/misc/extract.c
deleted file mode 100644
index b4f38db..0000000
--- a/misc/extract.c
+++ /dev/null
@@ -1,117 +0,0 @@
-/*
-  extract.c
-  david Rowe Jan 2019
-
-  Extracts sub sets of vectors from .f32 files, used for LPCNet VQ experiments.
-*/
-
-#include <assert.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <getopt.h>
-
-#define NB_FEATURES 55 /* number of cols per row */
-
-int main(int argc, char *argv[]) {
-    FILE *fin, *fout;
-    int st = 0;
-    int en = 17;
-    int stride = NB_FEATURES;
-    float gain = 1.0;
-    int frame_delay = 1;
-    float pred = 0.0;
-    int removemean = 0;
-    float lower = -1E32;
-    
-    static struct option long_options[] = {
-        {"startcol",   required_argument, 0, 's'},
-        {"endcol",     required_argument, 0, 'e'},
-        {"stride",     required_argument, 0, 't'},
-        {"gain",       required_argument, 0, 'g'},
-        {"pred",       required_argument, 0, 'p'},
-        {"delay",      required_argument, 0, 'd'},
-        {"removemean", no_argument, 0, 'm'},
-        {"lower",      required_argument, 0, 'l'},
-        {0, 0, 0, 0}
-    };
-
-    int opt_index = 0;
-    int c;
-    
-    while ((c = getopt_long (argc, argv, "s:e:t:g:p:d:ml:", long_options, &opt_index)) != -1) {
-        switch (c) {
-        case 's':
-            st = atoi(optarg);
-            break;
-        case 'e':
-            en = atoi(optarg);
-            break;
-        case 't':
-            stride = atoi(optarg);
-            break;
-        case 'g':
-            gain = atof(optarg);
-            break;
-        case 'p':
-            pred = atof(optarg);
-            break;
-        case 'd':
-            frame_delay = atoi(optarg);
-            break;
-        case 'm':
-            removemean = 1;
-            break;
-        case 'l':
-            lower = atof(optarg);
-            break;
-        default:
-        helpmsg:
-            fprintf(stderr, "usage: %s  -s startCol -e endCol [-t strideCol -g gain -p predCoeff -d framesDelay --removemean --lower] input.f32 output.f32\n", argv[0]);
-            exit(1);
-        }
-    }
-    if ( (argc - optind) < 2) {
-        fprintf(stderr, "Too few arguments\n");
-        goto helpmsg;
-    }
- 
-    fin = fopen(argv[optind],"rb"); assert(fin != NULL);
-    fout = fopen(argv[optind+1],"wb"); assert(fout != NULL);
-    printf("extracting from %d to %d inclusive (stride %d) ... gain = %f pred = %f frame_delay = %d\n",
-           st, en, stride, gain, pred, frame_delay);
-   
-    float features[stride], features_prev[frame_delay][stride], delta[stride];
-    int i,f,wr=0;
-    
-    for (f=0; f<frame_delay; f++)
-        for(i=0; i<stride; i++)
-            features_prev[f][i] = 0.0;
-
-    while((fread(features, sizeof(float), stride, fin) == stride)) {
-	float mean = 0.0;
-	for(i=st; i<=en; i++)
-	    mean += features[i];
-	mean /= (en-st+1);
-	if (removemean) {
-	    for(i=st; i<=en; i++)
-		features[i] -= mean;
-	}
-	for(i=st; i<=en; i++) {
-	    delta[i] = gain*(features[i] - pred*features_prev[frame_delay-1][i]);
-	}
-	if (mean > lower) {
-	    fwrite(&delta[st], sizeof(float), en-st+1, fout);
-	    wr++;
-	}
-	for (f=frame_delay-1; f>0; f--)
-	    for(i=0; i<stride; i++)
-		features_prev[f][i] = features_prev[f-1][i];
-	for(i=0; i<stride; i++)
-	    features_prev[0][i] = features[i];
-    }
-
-    fclose(fin); fclose(fout);
-    fprintf(stderr, "%d extracted\n", wr);
-    return 0;
-}
-
-- 
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