Add null resampler so we can iterate over the rsamplers and

start from right to left again when touching

Makefile.common

@@ -188,6 +188,7 @@ OBJ += frontend/frontend.o \
        audio/audio_dsp_filter.o \
        audio/drivers_resampler/sinc.o \
        audio/drivers_resampler/nearest.o \
+       audio/drivers_resampler/null_resampler.o \
        audio/drivers_resampler/cc_resampler.o \
        location/drivers/nulllocation.o \
        camera/drivers/nullcamera.o \

audio/audio_resampler_driver.c

@@ -31,6 +31,7 @@ static const rarch_resampler_t *resampler_drivers[] = {
    &sinc_resampler,
    &CC_resampler,
    &nearest_resampler,
+   &null_resampler,
    NULL,
 };
 

audio/audio_resampler_driver.h

@@ -140,6 +140,7 @@ typedef struct audio_frame_float
 extern rarch_resampler_t sinc_resampler;
 extern rarch_resampler_t CC_resampler;
 extern rarch_resampler_t nearest_resampler;
+extern rarch_resampler_t null_resampler;
 
 #ifndef DONT_HAVE_STRING_LIST
 /**

audio/drivers_resampler/null_resampler.c

@@ -0,0 +1,48 @@
+/*  RetroArch - A frontend for libretro.
+ *  Copyright (C) 2014-2016 - Ali Bouhlel ( aliaspider@gmail.com )
+ *
+ *  RetroArch 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 Found-
+ *  ation, either version 3 of the License, or (at your option) any later version.
+ *
+ *  RetroArch 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 RetroArch.
+ *  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdint.h>
+#include <stdlib.h>
+#include <math.h>
+ 
+#include "../audio_resampler_driver.h"
+typedef struct rarch_null_resampler
+{
+   void *empty;
+} rarch_null_resampler_t;
+ 
+static void resampler_null_process(
+      void *re_, struct resampler_data *data)
+{
+}
+ 
+static void resampler_null_free(void *re_)
+{
+}
+ 
+static void *resampler_null_init(const struct resampler_config *config,
+      double bandwidth_mod, resampler_simd_mask_t mask)
+{
+   return (void*)0;
+}
+ 
+rarch_resampler_t null_resampler = {
+   resampler_null_init,
+   resampler_null_process,
+   resampler_null_free,
+   RESAMPLER_API_VERSION,
+   "null",
+   "null"
+};

griffin/griffin.c

@@ -482,6 +482,7 @@ AUDIO RESAMPLER
 #include "../audio/audio_resampler_driver.c"
 #include "../audio/drivers_resampler/sinc.c"
 #include "../audio/drivers_resampler/nearest.c"
+#include "../audio/drivers_resampler/null_resampler.c"
 #include "../audio/drivers_resampler/cc_resampler.c"
 
 /*============================================================