1 files changed, 0 insertions, 83 deletions
diff --git a/src/dsd2pcm/noiseshape.c b/src/dsd2pcm/noiseshape.c
deleted file mode 100644
index ecd2f251d..000000000
--- a/src/dsd2pcm/noiseshape.c
+++ /dev/null
@@ -1,83 +0,0 @@
-#include <stdlib.h>
-#include <string.h>
-
-#include "noiseshape.h"
-
-extern int noise_shape_init(
-	noise_shape_ctx *ctx,
-	int sos_count,
-	const float *coeffs)
-{
-	int i;
-	ctx->sos_count = sos_count;
-	ctx->bbaa = coeffs;
-	ctx->t1 = (float*) malloc(sizeof(float)*sos_count);
-	if (!ctx->t1) goto escape1;
-	ctx->t2 = (float*) malloc(sizeof(float)*sos_count);
-	if (!ctx->t2) goto escape2;
-	for (i=0; i<sos_count; ++i) {
-		ctx->t1[i] = 0.f;
-		ctx->t2[i] = 0.f;
-	}
-	return 0;
-escape2:
-	free(ctx->t1);
-escape1:
-	return -1;
-}
-
-extern void noise_shape_destroy(
-	noise_shape_ctx *ctx)
-{
-	free(ctx->t1);
-	free(ctx->t2);
-}
-
-extern int noise_shape_clone(
-	const noise_shape_ctx *from,
-	noise_shape_ctx *to)
-{
-	to->sos_count = from->sos_count;
-	to->bbaa = from->bbaa;
-	to->t1 = (float*) malloc(sizeof(float)*to->sos_count);
-	if (!to->t1) goto error1;
-	to->t2 = (float*) malloc(sizeof(float)*to->sos_count);
-	if (!to->t2) goto error2;
-	memcpy(to->t1,from->t1,sizeof(float)*to->sos_count);
-	memcpy(to->t2,from->t2,sizeof(float)*to->sos_count);
-	return 0;
-error2:
-	free(to->t1);
-error1:
-	return -1;
-}
-
-extern float noise_shape_get(noise_shape_ctx *ctx)
-{
-	int i;
-	float acc;
-	const float *c;
-	acc = 0.0;
-	c = ctx->bbaa;
-	for (i=0; i<ctx->sos_count; ++i) {
-		float t1i = ctx->t1[i];
-		float t2i = ctx->t2[i];
-		ctx->t2[i] = acc -= t1i * c[2] + t2i * c[3];
-		acc += t1i * c[0] + t2i * c[1];
-		c += 4;
-	}
-	return acc;
-}
-
-extern void noise_shape_update(noise_shape_ctx *ctx, float qerror)
-{
-	float *p;
-	int i;
-	for (i=0; i<ctx->sos_count; ++i) {
-		ctx->t2[i] += qerror;
-	}
-	p = ctx->t1;
-	ctx->t1 = ctx->t2;
-	ctx->t2 = p;
-}
-