Update libjpeg-turbo.

simd/jsimd_arm.c

 /*
  * jsimd_arm.c
  *
  * Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
  * Copyright 2009-2011 D. R. Commander
  * 
  * Based on the x86 SIMD extension for IJG JPEG library,
  * Copyright (C) 1999-2006, MIYASAKA Masaru.
  * For conditions of distribution and use, see copyright notice in jsimdext.inc
  *
@@ skipping 86 matching lines @@
  * FIXME: This code is racy under a multi-threaded environment.
  */
 LOCAL(void)
 init_simd (void)
 {
   char *env = NULL;
 #if !defined(__ARM_NEON__) && defined(__linux__) || defined(ANDROID) || defined(__ANDROID__)
   int bufsize = 1024; /* an initial guess for the line buffer size limit */
 #endif
 
-  if (simd_support != ~0)
+  if (simd_support != ~0U)
     return;
 
   simd_support = 0;
 
 #if defined(__ARM_NEON__)
   simd_support |= JSIMD_ARM_NEON;
 #elif defined(__linux__) || defined(ANDROID) || defined(__ANDROID__)
   /* We still have a chance to use NEON regardless of globally used
    * -mcpu/-mfpu options passed to gcc by performing runtime detection via
    * /proc/cpuinfo parsing on linux/android */
@@ skipping 213 matching lines @@
   init_simd();
 
   return 0;
 }
 
 GLOBAL(int)
 jsimd_can_h2v1_fancy_upsample (void)
 {
   init_simd();
 
+  /* The code is optimised for these values only */
+  if (BITS_IN_JSAMPLE != 8)
+    return 0;
+  if (sizeof(JDIMENSION) != 4)
+    return 0;
+
+  if (simd_support & JSIMD_ARM_NEON)
+    return 1;
+
   return 0;
 }
 
 GLOBAL(void)
 jsimd_h2v2_fancy_upsample (j_decompress_ptr cinfo,
                            jpeg_component_info * compptr, 
                            JSAMPARRAY input_data,
                            JSAMPARRAY * output_data_ptr)
 {
 }
 
 GLOBAL(void)
 jsimd_h2v1_fancy_upsample (j_decompress_ptr cinfo,
                            jpeg_component_info * compptr, 
                            JSAMPARRAY input_data,
                            JSAMPARRAY * output_data_ptr)
 {
+  if (simd_support & JSIMD_ARM_NEON)
+    jsimd_h2v1_fancy_upsample_neon(cinfo->max_v_samp_factor,
+        compptr->downsampled_width, input_data, output_data_ptr);
 }
 
 GLOBAL(int)
 jsimd_can_h2v2_merged_upsample (void)
 {
   init_simd();
 
   return 0;
 }
 
@@ skipping 293 matching lines @@
     jsimd_idct_ifast_neon(compptr->dct_table, coef_block, output_buf, output_col);
 }
 
 GLOBAL(void)
 jsimd_idct_float (j_decompress_ptr cinfo, jpeg_component_info * compptr,
                 JCOEFPTR coef_block, JSAMPARRAY output_buf,
                 JDIMENSION output_col)
 {
 }