Add support for decoding to 565 to libjpeg_turbo

jsimd_none.c

 /*
  * jsimd_none.c
  *
  * Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
- * Copyright 2009-2011 D. R. Commander
+ * Copyright 2009-2011, 2014 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
  *
  * This file contains stubs for when there is no SIMD support available.
  */
 
 #define JPEG_INTERNALS
 #include "jinclude.h"
@@ skipping 13 matching lines @@
 {
   return 0;
 }
 
 GLOBAL(int)
 jsimd_can_ycc_rgb (void)
 {
   return 0;
 }
 
+GLOBAL(int)
+jsimd_can_ycc_rgb565 (void)
+{
+  return 0;
+}
+
 GLOBAL(void)
 jsimd_rgb_ycc_convert (j_compress_ptr cinfo,
                        JSAMPARRAY input_buf, JSAMPIMAGE output_buf,
                        JDIMENSION output_row, int num_rows)
 {
 }
 
 GLOBAL(void)
 jsimd_rgb_gray_convert (j_compress_ptr cinfo,
                         JSAMPARRAY input_buf, JSAMPIMAGE output_buf,
                         JDIMENSION output_row, int num_rows)
 {
 }
 
 GLOBAL(void)
 jsimd_ycc_rgb_convert (j_decompress_ptr cinfo,
                        JSAMPIMAGE input_buf, JDIMENSION input_row,
                        JSAMPARRAY output_buf, int num_rows)
 {
 }
 
+GLOBAL(void)
+jsimd_ycc_rgb565_convert (j_decompress_ptr cinfo,
+                          JSAMPIMAGE input_buf, JDIMENSION input_row,
+                          JSAMPARRAY output_buf, int num_rows)
+{
+}
+
 GLOBAL(int)
 jsimd_can_h2v2_downsample (void)
 {
   return 0;
 }
 
 GLOBAL(int)
 jsimd_can_h2v1_downsample (void)
 {
   return 0;
@@ skipping 234 matching lines @@
 {
 }
 
 GLOBAL(void)
 jsimd_idct_float (j_decompress_ptr cinfo, jpeg_component_info * compptr,
                 JCOEFPTR coef_block, JSAMPARRAY output_buf,
                 JDIMENSION output_col)
 {
 }