diff --git a/Android.mk b/Android.mk
index db87e77..d2e4e45 100644
--- a/Android.mk
+++ b/Android.mk
@@ -11,28 +11,13 @@
     jdinput.c jdmainct.c jdmarker.c jdmaster.c jdmerge.c jdphuff.c \
     jdpostct.c jdsample.c jdtrans.c jerror.c jfdctflt.c jfdctfst.c \
     jfdctint.c jidctflt.c jidctfst.c jidctint.c jidctred.c jquant1.c \
-    jquant2.c jutils.c jmemmgr.c
+    jquant2.c jutils.c jmemmgr.c jmemnobs.c
 
 LOCAL_SRC_FILES_arm += armv6_idct.S
 
 # jsimd_arm_neon.S does not compile with clang.
 LOCAL_CLANG_ASFLAGS_arm += -no-integrated-as
 
-ifeq (,$(TARGET_BUILD_APPS))
-# building against master
-# use ashmem as libjpeg decoder's backing store
-LOCAL_CFLAGS += -DUSE_ANDROID_ASHMEM
-LOCAL_SRC_FILES += \
-    jmem-ashmem.c
-else
-# unbundled branch, built against NDK.
-LOCAL_SDK_VERSION := 17
-# the original android memory manager.
-# use sdcard as libjpeg decoder's backing store
-LOCAL_SRC_FILES += \
-    jmem-android.c
-endif
-
 LOCAL_CFLAGS += -DAVOID_TABLES
 LOCAL_CFLAGS += -O3 -fstrict-aliasing -fprefetch-loop-arrays
 #LOCAL_CFLAGS += -march=armv6j
diff --git a/jmem-android.c b/jmem-android.c
deleted file mode 100644
index 5da4d0a..0000000
--- a/jmem-android.c
+++ /dev/null
@@ -1,186 +0,0 @@
-/*
- * Copyright (C) 2007-2008 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#define JPEG_INTERNALS
-#include "jinclude.h"
-#include "jpeglib.h"
-#include "jmemsys.h"		/* import the system-dependent declarations */
-
-#ifndef HAVE_STDLIB_H		/* <stdlib.h> should declare malloc(),free() */
-extern void * malloc JPP((size_t size));
-extern void free JPP((void *ptr));
-#endif
-
-#ifndef SEEK_SET		/* pre-ANSI systems may not define this; */
-#define SEEK_SET  0		/* if not, assume 0 is correct */
-#endif
-
-
-/*
- * Memory allocation and freeing are controlled by the regular library
- * routines malloc() and free().
- */
-
-GLOBAL(void *)
-jpeg_get_small (j_common_ptr cinfo, size_t sizeofobject)
-{
-  return (void *) malloc(sizeofobject);
-}
-
-GLOBAL(void)
-jpeg_free_small (j_common_ptr cinfo, void * object, size_t sizeofobject)
-{
-  free(object);
-}
-
-
-/*
- * "Large" objects are treated the same as "small" ones.
- * NB: although we include FAR keywords in the routine declarations,
- * this file won't actually work in 80x86 small/medium model; at least,
- * you probably won't be able to process useful-size images in only 64KB.
- */
-
-GLOBAL(void FAR *)
-jpeg_get_large (j_common_ptr cinfo, size_t sizeofobject)
-{
-  return (void FAR *) malloc(sizeofobject);
-}
-
-GLOBAL(void)
-jpeg_free_large (j_common_ptr cinfo, void FAR * object, size_t sizeofobject)
-{
-  free(object);
-}
-
-
-/*
- * This routine computes the total memory space available for allocation.
- * It's impossible to do this in a portable way; our current solution is
- * to make the user tell us (with a default value set at compile time).
- * If you can actually get the available space, it's a good idea to subtract
- * a slop factor of 5% or so.
- */
-
-#ifndef DEFAULT_MAX_MEM		/* so can override from makefile */
-#define DEFAULT_MAX_MEM		10000000L /* default: ten megabyte */
-#endif
-
-GLOBAL(long)
-jpeg_mem_available (j_common_ptr cinfo, long min_bytes_needed,
-		    long max_bytes_needed, long already_allocated)
-{
-  return cinfo->mem->max_memory_to_use - already_allocated;
-}
-
-
-/*
- * Backing store (temporary file) management.
- * Backing store objects are only used when the value returned by
- * jpeg_mem_available is less than the total space needed.  You can dispense
- * with these routines if you have plenty of virtual memory; see jmemnobs.c.
- */
-
-
-METHODDEF(void)
-read_backing_store (j_common_ptr cinfo, backing_store_ptr info,
-		    void FAR * buffer_address,
-		    long file_offset, long byte_count)
-{
-  if (fseek(info->temp_file, file_offset, SEEK_SET))
-    ERREXIT(cinfo, JERR_TFILE_SEEK);
-  if (JFREAD(info->temp_file, buffer_address, byte_count)
-      != (size_t) byte_count)
-    ERREXIT(cinfo, JERR_TFILE_READ);
-}
-
-
-METHODDEF(void)
-write_backing_store (j_common_ptr cinfo, backing_store_ptr info,
-		     void FAR * buffer_address,
-		     long file_offset, long byte_count)
-{
-  if (fseek(info->temp_file, file_offset, SEEK_SET))
-    ERREXIT(cinfo, JERR_TFILE_SEEK);
-  if (JFWRITE(info->temp_file, buffer_address, byte_count)
-      != (size_t) byte_count)
-    ERREXIT(cinfo, JERR_TFILE_WRITE);
-}
-
-
-METHODDEF(void)
-close_backing_store (j_common_ptr cinfo, backing_store_ptr info)
-{
-  fclose(info->temp_file);
-  /* Since this implementation uses tmpfile() to create the file,
-   * no explicit file deletion is needed.
-   */
-}
-
-static FILE* getTempFileFromPath(const char * path) {
-    FILE * fd = fopen(path, "w+");
-    unlink(path);
-    return fd;
-}
-
-static FILE* getTempFile() {
-    char path[1024];
-    snprintf(path, 1023, "/sdcard/.%d.tmp", getpid());
-    FILE * fd = getTempFileFromPath(path);
-    if (fd == NULL) {
-        // anywhere else we can create a temp file?
-		//	    snprintf(path, 1023, "/data/data/.%d.tmp", getpid());
-		//      fd = getTempFileFromPath(path);
-    }
-    return fd;
-}
-
-/*
- * Initial opening of a backing-store object.
- *
- * This version uses tmpfile(), which constructs a suitable file name
- * behind the scenes.  We don't have to use info->temp_name[] at all;
- * indeed, we can't even find out the actual name of the temp file.
- */
-
-GLOBAL(void)
-jpeg_open_backing_store (j_common_ptr cinfo, backing_store_ptr info,
-			 long total_bytes_needed)
-{
-  if ((info->temp_file = getTempFile()) == NULL)
-    ERREXITS(cinfo, JERR_TFILE_CREATE, "");
-  info->read_backing_store = read_backing_store;
-  info->write_backing_store = write_backing_store;
-  info->close_backing_store = close_backing_store;
-}
-
-
-/*
- * These routines take care of any system-dependent initialization and
- * cleanup required.
- */
-
-GLOBAL(long)
-jpeg_mem_init (j_common_ptr cinfo)
-{
-  return DEFAULT_MAX_MEM;	/* default for max_memory_to_use */
-}
-
-GLOBAL(void)
-jpeg_mem_term (j_common_ptr cinfo)
-{
-  /* no work */
-}
diff --git a/jmem-ashmem.c b/jmem-ashmem.c
deleted file mode 100644
index 0c35715..0000000
--- a/jmem-ashmem.c
+++ /dev/null
@@ -1,179 +0,0 @@
-/*
- * Copyright (C) 2007-2008 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#define JPEG_INTERNALS
-#include "jinclude.h"
-#include "jpeglib.h"
-#include "jmemsys.h"		/* import the system-dependent declarations */
-
-#include <cutils/ashmem.h>
-#include <unistd.h>
-#include <sys/mman.h>
-
-#ifndef HAVE_STDLIB_H		/* <stdlib.h> should declare malloc(),free() */
-extern void * malloc JPP((size_t size));
-extern void free JPP((void *ptr));
-#endif
-
-/*
- * Memory allocation and freeing are controlled by the regular library
- * routines malloc() and free().
- */
-
-GLOBAL(void *)
-jpeg_get_small (j_common_ptr cinfo, size_t sizeofobject)
-{
-  return (void *) malloc(sizeofobject);
-}
-
-GLOBAL(void)
-jpeg_free_small (j_common_ptr cinfo, void * object, size_t sizeofobject)
-{
-  free(object);
-}
-
-
-/*
- * "Large" objects are treated the same as "small" ones.
- * NB: although we include FAR keywords in the routine declarations,
- * this file won't actually work in 80x86 small/medium model; at least,
- * you probably won't be able to process useful-size images in only 64KB.
- */
-
-GLOBAL(void FAR *)
-jpeg_get_large (j_common_ptr cinfo, size_t sizeofobject)
-{
-  return (void FAR *) malloc(sizeofobject);
-}
-
-GLOBAL(void)
-jpeg_free_large (j_common_ptr cinfo, void FAR * object, size_t sizeofobject)
-{
-  free(object);
-}
-
-/*
- * This routine computes the total memory space available for allocation.
- * It's impossible to do this in a portable way; our current solution is
- * to make the user tell us (with a default value set at compile time).
- * If you can actually get the available space, it's a good idea to subtract
- * a slop factor of 5% or so.
- */
-
-#ifndef DEFAULT_MAX_MEM		/* so can override from makefile */
-#define DEFAULT_MAX_MEM		10000000L /* default: ten megabyte */
-#endif
-
-GLOBAL(long)
-jpeg_mem_available (j_common_ptr cinfo, long min_bytes_needed,
-		    long max_bytes_needed, long already_allocated)
-{
-  return cinfo->mem->max_memory_to_use - already_allocated;
-}
-
-
-/*
- * Backing store (temporary file) management.
- * Backing store objects are only used when the value returned by
- * jpeg_mem_available is less than the total space needed.  You can dispense
- * with these routines if you have plenty of virtual memory; see jmemnobs.c.
- */
-
-METHODDEF(void)
-read_backing_store (j_common_ptr cinfo, backing_store_ptr info,
-		    void FAR * buffer_address,
-		    long file_offset, long byte_count)
-{
-  memmove(buffer_address, info->addr + file_offset, byte_count);
-}
-
-
-METHODDEF(void)
-write_backing_store (j_common_ptr cinfo, backing_store_ptr info,
-		     void FAR * buffer_address,
-		     long file_offset, long byte_count)
-{
-  memmove(info->addr + file_offset, buffer_address, byte_count);
-}
-
-
-METHODDEF(void)
-close_backing_store (j_common_ptr cinfo, backing_store_ptr info)
-{
-  munmap(info->addr, info->size);
-  close(info->temp_file);
-}
-
-LOCAL(int)
-get_ashmem(backing_store_ptr info, long total_bytes_needed)
-{
-  char path[1024];
-  // FIXME: Does this name need to be unique? What happens if two jpegs
-  // are being decoded simultaneously in the same process?
-  snprintf(path, 1023, "%d.tmp.ashmem", getpid());
-  int fd = ashmem_create_region(path, total_bytes_needed);
-  if (fd == -1) {
-      return -1;
-  }
-  int err = ashmem_set_prot_region(fd, PROT_READ | PROT_WRITE);
-  if (err) {
-    close(fd);
-    return -1;
-  }
-  void* addr = mmap(NULL, total_bytes_needed, PROT_READ | PROT_WRITE,
-                    MAP_PRIVATE, fd, 0);
-  if (-1 == (long) addr) {
-    close(fd);
-    return -1;
-  }
-  info->addr = addr;
-  info->size = total_bytes_needed;
-  info->temp_file = fd;
-  return fd;
-}
-
-/*
- * Initial opening of a backing-store object.
- * This version uses ashmem to get a shared memory of total-bytes_needed.
- */
-
-GLOBAL(void)
-jpeg_open_backing_store (j_common_ptr cinfo, backing_store_ptr info,
-			 long total_bytes_needed)
-{
-  if (get_ashmem(info, total_bytes_needed) == -1)
-    ERREXITS(cinfo, JERR_TFILE_CREATE, "");
-  info->read_backing_store = read_backing_store;
-  info->write_backing_store = write_backing_store;
-  info->close_backing_store = close_backing_store;
-}
-
-/*
- * These routines take care of any system-dependent initialization and
- * cleanup required.
- */
-
-GLOBAL(long)
-jpeg_mem_init (j_common_ptr cinfo)
-{
-  return DEFAULT_MAX_MEM;	/* default for max_memory_to_use */
-}
-
-GLOBAL(void)
-jpeg_mem_term (j_common_ptr cinfo)
-{
-  /* no work */
-}