Framework for supporting SIMD acceleration
Designed to impose minimal changes on the "normal" code.
git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@3645 3789f03b-4d11-0410-bbf8-ca57d06f2519
diff --git a/common/jpeg/jcsample.c b/common/jpeg/jcsample.c
index 212ec87..eea376f 100644
--- a/common/jpeg/jcsample.c
+++ b/common/jpeg/jcsample.c
@@ -2,6 +2,7 @@
* jcsample.c
*
* Copyright (C) 1991-1996, Thomas G. Lane.
+ * Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
@@ -48,6 +49,7 @@
#define JPEG_INTERNALS
#include "jinclude.h"
#include "jpeglib.h"
+#include "jsimd.h"
/* Pointer to routine to downsample a single component */
@@ -494,7 +496,10 @@
} else if (compptr->h_samp_factor * 2 == cinfo->max_h_samp_factor &&
compptr->v_samp_factor == cinfo->max_v_samp_factor) {
smoothok = FALSE;
- downsample->methods[ci] = h2v1_downsample;
+ if (jsimd_can_h2v1_downsample())
+ downsample->methods[ci] = jsimd_h2v1_downsample;
+ else
+ downsample->methods[ci] = h2v1_downsample;
} else if (compptr->h_samp_factor * 2 == cinfo->max_h_samp_factor &&
compptr->v_samp_factor * 2 == cinfo->max_v_samp_factor) {
#ifdef INPUT_SMOOTHING_SUPPORTED
@@ -503,7 +508,10 @@
downsample->pub.need_context_rows = TRUE;
} else
#endif
- downsample->methods[ci] = h2v2_downsample;
+ if (jsimd_can_h2v2_downsample())
+ downsample->methods[ci] = jsimd_h2v2_downsample;
+ else
+ downsample->methods[ci] = h2v2_downsample;
} else if ((cinfo->max_h_samp_factor % compptr->h_samp_factor) == 0 &&
(cinfo->max_v_samp_factor % compptr->v_samp_factor) == 0) {
smoothok = FALSE;