diff options
author | ossman_ <ossman_@632fc199-4ca6-4c93-a231-07263d6284db> | 2009-03-09 13:15:56 +0000 |
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committer | ossman_ <ossman_@632fc199-4ca6-4c93-a231-07263d6284db> | 2009-03-09 13:15:56 +0000 |
commit | 0c228e147dda7909cc905e5742737ac4121b5af5 (patch) | |
tree | b3161bf8ffded04581c050b7670544eeed3c1c7b /jdsample.c | |
parent | 93736b192df8f7ab045602aad46617fa43ee8d00 (diff) |
Framework for supporting SIMD acceleration
Designed to impose minimal changes on the "normal" code.
git-svn-id: svn://svn.code.sf.net/p/libjpeg-turbo/code/trunk@14 632fc199-4ca6-4c93-a231-07263d6284db
Diffstat (limited to 'jdsample.c')
-rw-r--r-- | jdsample.c | 30 |
1 files changed, 23 insertions, 7 deletions
@@ -2,6 +2,7 @@ * jdsample.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. * @@ -21,6 +22,7 @@ #define JPEG_INTERNALS #include "jinclude.h" #include "jpeglib.h" +#include "jsimd.h" /* Pointer to routine to upsample a single component */ @@ -447,18 +449,32 @@ jinit_upsampler (j_decompress_ptr cinfo) } else if (h_in_group * 2 == h_out_group && v_in_group == v_out_group) { /* Special cases for 2h1v upsampling */ - if (do_fancy && compptr->downsampled_width > 2) - upsample->methods[ci] = h2v1_fancy_upsample; - else - upsample->methods[ci] = h2v1_upsample; + if (do_fancy && compptr->downsampled_width > 2) { + if (jsimd_can_h2v1_fancy_upsample()) + upsample->methods[ci] = jsimd_h2v1_fancy_upsample; + else + upsample->methods[ci] = h2v1_fancy_upsample; + } else { + if (jsimd_can_h2v1_upsample()) + upsample->methods[ci] = jsimd_h2v1_upsample; + else + upsample->methods[ci] = h2v1_upsample; + } } else if (h_in_group * 2 == h_out_group && v_in_group * 2 == v_out_group) { /* Special cases for 2h2v upsampling */ if (do_fancy && compptr->downsampled_width > 2) { - upsample->methods[ci] = h2v2_fancy_upsample; + if (jsimd_can_h2v2_fancy_upsample()) + upsample->methods[ci] = jsimd_h2v2_fancy_upsample; + else + upsample->methods[ci] = h2v2_fancy_upsample; upsample->pub.need_context_rows = TRUE; - } else - upsample->methods[ci] = h2v2_upsample; + } else { + if (jsimd_can_h2v2_upsample()) + upsample->methods[ci] = jsimd_h2v2_upsample; + else + upsample->methods[ci] = h2v2_upsample; + } } else if ((h_out_group % h_in_group) == 0 && (v_out_group % v_in_group) == 0) { /* Generic integral-factors upsampling method */ |