diff --git a/src/base/sbuf.c b/src/base/sbuf.c
index 6250d1e1..c0c07945 100644
--- a/src/base/sbuf.c
+++ b/src/base/sbuf.c
@@ -1,3 +1,4 @@
+#include <stdlib.h>
 #include <string.h>
 #include "../util.h"
 #include "sbuf.h"
@@ -74,3 +75,11 @@ void sbuf_copy_layers(sample_t* dst, int dst_channels, sample_t* src, int src_ch
 void sbuf_silence(sample_t* dst, int samples, int channels, int filled) {
     memset(dst + filled * channels, 0, (samples - filled) * channels * sizeof(sample_t));   
 }
+
+bool sbuf_realloc(sample_t** dst, int samples, int channels) {
+    sample_t* outbuf_re = realloc(*dst, samples * channels * sizeof(sample_t));
+    if (!outbuf_re) return false;
+
+    *dst = outbuf_re;
+    return true;
+}
diff --git a/src/base/sbuf.h b/src/base/sbuf.h
index 044de9e4..3d11b4df 100644
--- a/src/base/sbuf.h
+++ b/src/base/sbuf.h
@@ -1,5 +1,5 @@
-#ifndef _SBUF_H
-#define _SBUF_H
+#ifndef _SBUF_H_
+#define _SBUF_H_
 
 #include "../streamtypes.h"
 
@@ -27,6 +27,11 @@ typedef struct {
 } sbuf_t;
 
 void sbuf_init16(sbuf_t* sbuf, int16_t* buf, int samples, int channels);
+
+void sbuf_clamp(sbuf_t* sbuf, int samples);
+
+/* skips N samples from current sbuf */
+void sbuf_consume(sbuf_t* sbuf, int samples);
 #endif
 
 /* it's probably slightly faster to make those inline'd, but aren't called that often to matter (given big enough total samples) */
@@ -42,5 +47,6 @@ void sbuf_copy_layers(sample_t* dst, int dst_channels, sample_t* src, int src_ch
 
 void sbuf_silence(sample_t* dst, int samples, int channels, int filled);
 
+bool sbuf_realloc(sample_t** dst, int samples, int channels);
 
 #endif
diff --git a/src/layout/layered.c b/src/layout/layered.c
index b374afea..746b959c 100644
--- a/src/layout/layered.c
+++ b/src/layout/layered.c
@@ -179,9 +179,8 @@ bool setup_layout_layered(layered_layout_data* data) {
         return false;
 
     /* create internal buffer big enough for mixing all layers */
-    sample_t* outbuf_re = realloc(data->buffer, VGMSTREAM_LAYER_SAMPLE_BUFFER * max_input_channels * sizeof(sample_t));
-    if (!outbuf_re) goto fail;
-    data->buffer = outbuf_re;
+    if (!sbuf_realloc(&data->buffer, VGMSTREAM_LAYER_SAMPLE_BUFFER, max_input_channels))
+        goto fail;
 
     data->input_channels = max_input_channels;
     data->output_channels = max_output_channels;
diff --git a/src/layout/segmented.c b/src/layout/segmented.c
index 6b412b5f..c411fa33 100644
--- a/src/layout/segmented.c
+++ b/src/layout/segmented.c
@@ -14,7 +14,7 @@
  * (like one part for intro and other for loop segments, which may even use different codecs). */
 void render_vgmstream_segmented(sample_t* outbuf, int32_t sample_count, VGMSTREAM* vgmstream) {
     segmented_layout_data* data = vgmstream->layout_data;
-    bool use_internal_buffer = 0;
+    bool use_internal_buffer = false;
 
     /* normally uses outbuf directly (faster?) but could need internal buffer if downmixing */
     if (vgmstream->channels != data->input_channels || data->mixed_channels) {
@@ -146,7 +146,6 @@ fail:
 
 bool setup_layout_segmented(segmented_layout_data* data) {
     int max_input_channels = 0, max_output_channels = 0, mixed_channels = 0;
-    sample_t* outbuf_re = NULL;
 
 
     /* setup each VGMSTREAM (roughly equivalent to vgmstream.c's init_vgmstream_internal stuff) */
@@ -211,12 +210,11 @@ bool setup_layout_segmented(segmented_layout_data* data) {
     }
 
     if (max_output_channels > VGMSTREAM_MAX_CHANNELS || max_input_channels > VGMSTREAM_MAX_CHANNELS)
-        goto fail;
+        return false;
 
     /* create internal buffer big enough for mixing */
-    outbuf_re = realloc(data->buffer, VGMSTREAM_SEGMENT_SAMPLE_BUFFER*max_input_channels*sizeof(sample_t));
-    if (!outbuf_re) goto fail;
-    data->buffer = outbuf_re;
+    if (!sbuf_realloc(&data->buffer, VGMSTREAM_SEGMENT_SAMPLE_BUFFER, max_input_channels))
+        goto fail;
 
     data->input_channels = max_input_channels;
     data->output_channels = max_output_channels;
@@ -232,7 +230,7 @@ void free_layout_segmented(segmented_layout_data* data) {
         return;
 
     for (int i = 0; i < data->segment_count; i++) {
-        bool is_repeat = true;
+        bool is_repeat = false;
 
         /* segments are allowed to be repeated so don't close the same thing twice */
         for (int j = 0; j < i; j++) {