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Unified Diff: simd/jsimd_x86_64.c

Issue 1939823002: Update to libjpeg_turbo 1.4.90 (Closed) Base URL: https://chromium.googlesource.com/chromium/deps/libjpeg_turbo.git@master
Patch Set: Response to comments Created 4 years, 7 months ago
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Index: simd/jsimd_x86_64.c
diff --git a/simd/jsimd_x86_64.c b/simd/jsimd_x86_64.c
index d6008617c543672069aec4ef14398e4dd4b5b192..fa33bea0dc8d71dc54d48f0ee6c1a8edfd0cd226 100644
--- a/simd/jsimd_x86_64.c
+++ b/simd/jsimd_x86_64.c
@@ -2,15 +2,16 @@
* jsimd_x86_64.c
*
* Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
- * Copyright 2009-2011, 2014 D. R. Commander
- *
+ * Copyright 2009-2011, 2014, 2016 D. R. Commander
+ * Copyright 2015 Matthieu Darbois
+ *
* 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 the interface between the "normal" portions
* of the library and the SIMD implementations when running on a
- * x86_64 architecture.
+ * 64-bit x86 architecture.
*/
#define JPEG_INTERNALS
@@ -29,10 +30,38 @@
#define IS_ALIGNED_SSE(ptr) (IS_ALIGNED(ptr, 4)) /* 16 byte alignment */
-#ifndef JPEG_DECODE_ONLY
+static unsigned int simd_support = ~0;
+static unsigned int simd_huffman = 1;
+
+/*
+ * Check what SIMD accelerations are supported.
+ *
+ * FIXME: This code is racy under a multi-threaded environment.
+ */
+LOCAL(void)
+init_simd (void)
+{
+ char *env = NULL;
+
+ if (simd_support != ~0U)
+ return;
+
+ simd_support = JSIMD_SSE2 | JSIMD_SSE;
+
+ /* Force different settings through environment variables */
+ env = getenv("JSIMD_FORCENONE");
+ if ((env != NULL) && (strcmp(env, "1") == 0))
+ simd_support = 0;
+ env = getenv("JSIMD_NOHUFFENC");
+ if ((env != NULL) && (strcmp(env, "1") == 0))
+ simd_huffman = 0;
+}
+
GLOBAL(int)
jsimd_can_rgb_ycc (void)
{
+ init_simd();
+
/* The code is optimised for these values only */
if (BITS_IN_JSAMPLE != 8)
return 0;
@@ -41,16 +70,18 @@ jsimd_can_rgb_ycc (void)
if ((RGB_PIXELSIZE != 3) && (RGB_PIXELSIZE != 4))
return 0;
- if (!IS_ALIGNED_SSE(jconst_rgb_ycc_convert_sse2))
- return 0;
+ if ((simd_support & JSIMD_SSE2) &&
+ IS_ALIGNED_SSE(jconst_rgb_ycc_convert_sse2))
+ return 1;
- return 1;
+ return 0;
}
-#endif
GLOBAL(int)
jsimd_can_rgb_gray (void)
{
+ init_simd();
+
/* The code is optimised for these values only */
if (BITS_IN_JSAMPLE != 8)
return 0;
@@ -59,15 +90,18 @@ jsimd_can_rgb_gray (void)
if ((RGB_PIXELSIZE != 3) && (RGB_PIXELSIZE != 4))
return 0;
- if (!IS_ALIGNED_SSE(jconst_rgb_gray_convert_sse2))
- return 0;
+ if ((simd_support & JSIMD_SSE2) &&
+ IS_ALIGNED_SSE(jconst_rgb_gray_convert_sse2))
+ return 1;
- return 1;
+ return 0;
}
GLOBAL(int)
jsimd_can_ycc_rgb (void)
{
+ init_simd();
+
/* The code is optimised for these values only */
if (BITS_IN_JSAMPLE != 8)
return 0;
@@ -76,10 +110,11 @@ jsimd_can_ycc_rgb (void)
if ((RGB_PIXELSIZE != 3) && (RGB_PIXELSIZE != 4))
return 0;
- if (!IS_ALIGNED_SSE(jconst_ycc_rgb_convert_sse2))
- return 0;
+ if ((simd_support & JSIMD_SSE2) &&
+ IS_ALIGNED_SSE(jconst_ycc_rgb_convert_sse2))
+ return 1;
- return 1;
+ return 0;
}
GLOBAL(int)
@@ -88,7 +123,6 @@ jsimd_can_ycc_rgb565 (void)
return 0;
}
-#ifndef JPEG_DECODE_ONLY
GLOBAL(void)
jsimd_rgb_ycc_convert (j_compress_ptr cinfo,
JSAMPARRAY input_buf, JSAMPIMAGE output_buf,
@@ -96,8 +130,7 @@ jsimd_rgb_ycc_convert (j_compress_ptr cinfo,
{
void (*sse2fct)(JDIMENSION, JSAMPARRAY, JSAMPIMAGE, JDIMENSION, int);
- switch(cinfo->in_color_space)
- {
+ switch(cinfo->in_color_space) {
case JCS_EXT_RGB:
sse2fct=jsimd_extrgb_ycc_convert_sse2;
break;
@@ -127,7 +160,6 @@ jsimd_rgb_ycc_convert (j_compress_ptr cinfo,
sse2fct(cinfo->image_width, input_buf, output_buf, output_row, num_rows);
}
-#endif
GLOBAL(void)
jsimd_rgb_gray_convert (j_compress_ptr cinfo,
@@ -136,8 +168,7 @@ jsimd_rgb_gray_convert (j_compress_ptr cinfo,
{
void (*sse2fct)(JDIMENSION, JSAMPARRAY, JSAMPIMAGE, JDIMENSION, int);
- switch(cinfo->in_color_space)
- {
+ switch(cinfo->in_color_space) {
case JCS_EXT_RGB:
sse2fct=jsimd_extrgb_gray_convert_sse2;
break;
@@ -175,8 +206,7 @@ jsimd_ycc_rgb_convert (j_decompress_ptr cinfo,
{
void (*sse2fct)(JDIMENSION, JSAMPIMAGE, JDIMENSION, JSAMPARRAY, int);
- switch(cinfo->out_color_space)
- {
+ switch(cinfo->out_color_space) {
case JCS_EXT_RGB:
sse2fct=jsimd_ycc_extrgb_convert_sse2;
break;
@@ -214,180 +244,204 @@ jsimd_ycc_rgb565_convert (j_decompress_ptr cinfo,
{
}
-#ifndef JPEG_DECODE_ONLY
GLOBAL(int)
jsimd_can_h2v2_downsample (void)
{
+ init_simd();
+
/* The code is optimised for these values only */
if (BITS_IN_JSAMPLE != 8)
return 0;
if (sizeof(JDIMENSION) != 4)
return 0;
- return 1;
+ if (simd_support & JSIMD_SSE2)
+ return 1;
+
+ return 0;
}
GLOBAL(int)
jsimd_can_h2v1_downsample (void)
{
+ init_simd();
+
/* The code is optimised for these values only */
if (BITS_IN_JSAMPLE != 8)
return 0;
if (sizeof(JDIMENSION) != 4)
return 0;
- return 1;
+ if (simd_support & JSIMD_SSE2)
+ return 1;
+
+ return 0;
}
GLOBAL(void)
-jsimd_h2v2_downsample (j_compress_ptr cinfo, jpeg_component_info * compptr,
+jsimd_h2v2_downsample (j_compress_ptr cinfo, jpeg_component_info *compptr,
JSAMPARRAY input_data, JSAMPARRAY output_data)
{
- jsimd_h2v2_downsample_sse2(cinfo->image_width,
- cinfo->max_v_samp_factor,
- compptr->v_samp_factor,
- compptr->width_in_blocks,
+ jsimd_h2v2_downsample_sse2(cinfo->image_width, cinfo->max_v_samp_factor,
+ compptr->v_samp_factor, compptr->width_in_blocks,
input_data, output_data);
}
GLOBAL(void)
-jsimd_h2v1_downsample (j_compress_ptr cinfo, jpeg_component_info * compptr,
+jsimd_h2v1_downsample (j_compress_ptr cinfo, jpeg_component_info *compptr,
JSAMPARRAY input_data, JSAMPARRAY output_data)
{
- jsimd_h2v1_downsample_sse2(cinfo->image_width,
- cinfo->max_v_samp_factor,
- compptr->v_samp_factor,
- compptr->width_in_blocks,
+ jsimd_h2v1_downsample_sse2(cinfo->image_width, cinfo->max_v_samp_factor,
+ compptr->v_samp_factor, compptr->width_in_blocks,
input_data, output_data);
}
-#endif
GLOBAL(int)
jsimd_can_h2v2_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;
- return 1;
+ if (simd_support & JSIMD_SSE2)
+ return 1;
+
+ return 0;
}
GLOBAL(int)
jsimd_can_h2v1_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;
- return 1;
+ if (simd_support & JSIMD_SSE2)
+ return 1;
+
+ return 0;
}
GLOBAL(void)
jsimd_h2v2_upsample (j_decompress_ptr cinfo,
- jpeg_component_info * compptr,
+ jpeg_component_info *compptr,
JSAMPARRAY input_data,
- JSAMPARRAY * output_data_ptr)
+ JSAMPARRAY *output_data_ptr)
{
- jsimd_h2v2_upsample_sse2(cinfo->max_v_samp_factor,
- cinfo->output_width,
+ jsimd_h2v2_upsample_sse2(cinfo->max_v_samp_factor, cinfo->output_width,
input_data, output_data_ptr);
}
GLOBAL(void)
jsimd_h2v1_upsample (j_decompress_ptr cinfo,
- jpeg_component_info * compptr,
+ jpeg_component_info *compptr,
JSAMPARRAY input_data,
- JSAMPARRAY * output_data_ptr)
+ JSAMPARRAY *output_data_ptr)
{
- jsimd_h2v1_upsample_sse2(cinfo->max_v_samp_factor,
- cinfo->output_width,
+ jsimd_h2v1_upsample_sse2(cinfo->max_v_samp_factor, cinfo->output_width,
input_data, output_data_ptr);
}
GLOBAL(int)
jsimd_can_h2v2_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 (!IS_ALIGNED_SSE(jconst_fancy_upsample_sse2))
- return 0;
+ if ((simd_support & JSIMD_SSE2) &&
+ IS_ALIGNED_SSE(jconst_fancy_upsample_sse2))
+ return 1;
- return 1;
+ 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 (!IS_ALIGNED_SSE(jconst_fancy_upsample_sse2))
- return 0;
+ if ((simd_support & JSIMD_SSE2) &&
+ IS_ALIGNED_SSE(jconst_fancy_upsample_sse2))
+ return 1;
- return 1;
+ return 0;
}
GLOBAL(void)
jsimd_h2v2_fancy_upsample (j_decompress_ptr cinfo,
- jpeg_component_info * compptr,
+ jpeg_component_info *compptr,
JSAMPARRAY input_data,
- JSAMPARRAY * output_data_ptr)
+ JSAMPARRAY *output_data_ptr)
{
jsimd_h2v2_fancy_upsample_sse2(cinfo->max_v_samp_factor,
- compptr->downsampled_width,
- input_data, output_data_ptr);
+ compptr->downsampled_width, input_data,
+ output_data_ptr);
}
GLOBAL(void)
jsimd_h2v1_fancy_upsample (j_decompress_ptr cinfo,
- jpeg_component_info * compptr,
+ jpeg_component_info *compptr,
JSAMPARRAY input_data,
- JSAMPARRAY * output_data_ptr)
+ JSAMPARRAY *output_data_ptr)
{
jsimd_h2v1_fancy_upsample_sse2(cinfo->max_v_samp_factor,
- compptr->downsampled_width,
- input_data, output_data_ptr);
+ compptr->downsampled_width, input_data,
+ output_data_ptr);
}
GLOBAL(int)
jsimd_can_h2v2_merged_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 (!IS_ALIGNED_SSE(jconst_merged_upsample_sse2))
- return 0;
+ if ((simd_support & JSIMD_SSE2) &&
+ IS_ALIGNED_SSE(jconst_merged_upsample_sse2))
+ return 1;
- return 1;
+ return 0;
}
GLOBAL(int)
jsimd_can_h2v1_merged_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 (!IS_ALIGNED_SSE(jconst_merged_upsample_sse2))
- return 0;
+ if ((simd_support & JSIMD_SSE2) &&
+ IS_ALIGNED_SSE(jconst_merged_upsample_sse2))
+ return 1;
- return 1;
+ return 0;
}
GLOBAL(void)
@@ -398,8 +452,7 @@ jsimd_h2v2_merged_upsample (j_decompress_ptr cinfo,
{
void (*sse2fct)(JDIMENSION, JSAMPIMAGE, JDIMENSION, JSAMPARRAY);
- switch(cinfo->out_color_space)
- {
+ switch(cinfo->out_color_space) {
case JCS_EXT_RGB:
sse2fct=jsimd_h2v2_extrgb_merged_upsample_sse2;
break;
@@ -438,8 +491,7 @@ jsimd_h2v1_merged_upsample (j_decompress_ptr cinfo,
{
void (*sse2fct)(JDIMENSION, JSAMPIMAGE, JDIMENSION, JSAMPARRAY);
- switch(cinfo->out_color_space)
- {
+ switch(cinfo->out_color_space) {
case JCS_EXT_RGB:
sse2fct=jsimd_h2v1_extrgb_merged_upsample_sse2;
break;
@@ -470,10 +522,11 @@ jsimd_h2v1_merged_upsample (j_decompress_ptr cinfo,
sse2fct(cinfo->output_width, input_buf, in_row_group_ctr, output_buf);
}
-#ifndef JPEG_DECODE_ONLY
GLOBAL(int)
jsimd_can_convsamp (void)
{
+ init_simd();
+
/* The code is optimised for these values only */
if (DCTSIZE != 8)
return 0;
@@ -484,12 +537,17 @@ jsimd_can_convsamp (void)
if (sizeof(DCTELEM) != 2)
return 0;
- return 1;
+ if (simd_support & JSIMD_SSE2)
+ return 1;
+
+ return 0;
}
GLOBAL(int)
jsimd_can_convsamp_float (void)
{
+ init_simd();
+
/* The code is optimised for these values only */
if (DCTSIZE != 8)
return 0;
@@ -500,19 +558,22 @@ jsimd_can_convsamp_float (void)
if (sizeof(FAST_FLOAT) != 4)
return 0;
- return 1;
+ if (simd_support & JSIMD_SSE2)
+ return 1;
+
+ return 0;
}
GLOBAL(void)
jsimd_convsamp (JSAMPARRAY sample_data, JDIMENSION start_col,
- DCTELEM * workspace)
+ DCTELEM *workspace)
{
jsimd_convsamp_sse2(sample_data, start_col, workspace);
}
GLOBAL(void)
jsimd_convsamp_float (JSAMPARRAY sample_data, JDIMENSION start_col,
- FAST_FLOAT * workspace)
+ FAST_FLOAT *workspace)
{
jsimd_convsamp_float_sse2(sample_data, start_col, workspace);
}
@@ -520,62 +581,68 @@ jsimd_convsamp_float (JSAMPARRAY sample_data, JDIMENSION start_col,
GLOBAL(int)
jsimd_can_fdct_islow (void)
{
+ init_simd();
+
/* The code is optimised for these values only */
if (DCTSIZE != 8)
return 0;
if (sizeof(DCTELEM) != 2)
return 0;
- if (!IS_ALIGNED_SSE(jconst_fdct_islow_sse2))
- return 0;
+ if ((simd_support & JSIMD_SSE2) && IS_ALIGNED_SSE(jconst_fdct_islow_sse2))
+ return 1;
- return 1;
+ return 0;
}
GLOBAL(int)
jsimd_can_fdct_ifast (void)
{
+ init_simd();
+
/* The code is optimised for these values only */
if (DCTSIZE != 8)
return 0;
if (sizeof(DCTELEM) != 2)
return 0;
- if (!IS_ALIGNED_SSE(jconst_fdct_ifast_sse2))
- return 0;
+ if ((simd_support & JSIMD_SSE2) && IS_ALIGNED_SSE(jconst_fdct_ifast_sse2))
+ return 1;
- return 1;
+ return 0;
}
GLOBAL(int)
jsimd_can_fdct_float (void)
{
+ init_simd();
+
/* The code is optimised for these values only */
if (DCTSIZE != 8)
return 0;
if (sizeof(FAST_FLOAT) != 4)
return 0;
- if (!IS_ALIGNED_SSE(jconst_fdct_float_sse))
- return 0;
+ if ((simd_support & JSIMD_SSE) && IS_ALIGNED_SSE(jconst_fdct_float_sse))
+ return 1;
- return 1;
+ return 0;
}
GLOBAL(void)
-jsimd_fdct_islow (DCTELEM * data)
+jsimd_fdct_islow (DCTELEM *data)
{
jsimd_fdct_islow_sse2(data);
}
GLOBAL(void)
-jsimd_fdct_ifast (DCTELEM * data)
+jsimd_fdct_ifast (DCTELEM *data)
{
jsimd_fdct_ifast_sse2(data);
}
GLOBAL(void)
-jsimd_fdct_float (FAST_FLOAT * data)
+jsimd_fdct_float (FAST_FLOAT *data)
{
jsimd_fdct_float_sse(data);
}
@@ -583,6 +650,8 @@ jsimd_fdct_float (FAST_FLOAT * data)
GLOBAL(int)
jsimd_can_quantize (void)
{
+ init_simd();
+
/* The code is optimised for these values only */
if (DCTSIZE != 8)
return 0;
@@ -591,12 +660,17 @@ jsimd_can_quantize (void)
if (sizeof(DCTELEM) != 2)
return 0;
- return 1;
+ if (simd_support & JSIMD_SSE2)
+ return 1;
+
+ return 0;
}
GLOBAL(int)
jsimd_can_quantize_float (void)
{
+ init_simd();
+
/* The code is optimised for these values only */
if (DCTSIZE != 8)
return 0;
@@ -605,27 +679,31 @@ jsimd_can_quantize_float (void)
if (sizeof(FAST_FLOAT) != 4)
return 0;
- return 1;
+ if (simd_support & JSIMD_SSE2)
+ return 1;
+
+ return 0;
}
GLOBAL(void)
-jsimd_quantize (JCOEFPTR coef_block, DCTELEM * divisors,
- DCTELEM * workspace)
+jsimd_quantize (JCOEFPTR coef_block, DCTELEM *divisors,
+ DCTELEM *workspace)
{
jsimd_quantize_sse2(coef_block, divisors, workspace);
}
GLOBAL(void)
-jsimd_quantize_float (JCOEFPTR coef_block, FAST_FLOAT * divisors,
- FAST_FLOAT * workspace)
+jsimd_quantize_float (JCOEFPTR coef_block, FAST_FLOAT *divisors,
+ FAST_FLOAT *workspace)
{
jsimd_quantize_float_sse2(coef_block, divisors, workspace);
}
-#endif
GLOBAL(int)
jsimd_can_idct_2x2 (void)
{
+ init_simd();
+
/* The code is optimised for these values only */
if (DCTSIZE != 8)
return 0;
@@ -638,15 +716,17 @@ jsimd_can_idct_2x2 (void)
if (sizeof(ISLOW_MULT_TYPE) != 2)
return 0;
- if (!IS_ALIGNED_SSE(jconst_idct_red_sse2))
- return 0;
+ if ((simd_support & JSIMD_SSE2) && IS_ALIGNED_SSE(jconst_idct_red_sse2))
+ return 1;
- return 1;
+ return 0;
}
GLOBAL(int)
jsimd_can_idct_4x4 (void)
{
+ init_simd();
+
/* The code is optimised for these values only */
if (DCTSIZE != 8)
return 0;
@@ -659,14 +739,14 @@ jsimd_can_idct_4x4 (void)
if (sizeof(ISLOW_MULT_TYPE) != 2)
return 0;
- if (!IS_ALIGNED_SSE(jconst_idct_red_sse2))
- return 0;
+ if ((simd_support & JSIMD_SSE2) && IS_ALIGNED_SSE(jconst_idct_red_sse2))
+ return 1;
- return 1;
+ return 0;
}
GLOBAL(void)
-jsimd_idct_2x2 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
+jsimd_idct_2x2 (j_decompress_ptr cinfo, jpeg_component_info *compptr,
JCOEFPTR coef_block, JSAMPARRAY output_buf,
JDIMENSION output_col)
{
@@ -674,7 +754,7 @@ jsimd_idct_2x2 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
}
GLOBAL(void)
-jsimd_idct_4x4 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
+jsimd_idct_4x4 (j_decompress_ptr cinfo, jpeg_component_info *compptr,
JCOEFPTR coef_block, JSAMPARRAY output_buf,
JDIMENSION output_col)
{
@@ -684,6 +764,8 @@ jsimd_idct_4x4 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
GLOBAL(int)
jsimd_can_idct_islow (void)
{
+ init_simd();
+
/* The code is optimised for these values only */
if (DCTSIZE != 8)
return 0;
@@ -696,15 +778,17 @@ jsimd_can_idct_islow (void)
if (sizeof(ISLOW_MULT_TYPE) != 2)
return 0;
- if (!IS_ALIGNED_SSE(jconst_idct_islow_sse2))
- return 0;
+ if ((simd_support & JSIMD_SSE2) && IS_ALIGNED_SSE(jconst_idct_islow_sse2))
+ return 1;
- return 1;
+ return 0;
}
GLOBAL(int)
jsimd_can_idct_ifast (void)
{
+ init_simd();
+
/* The code is optimised for these values only */
if (DCTSIZE != 8)
return 0;
@@ -719,15 +803,17 @@ jsimd_can_idct_ifast (void)
if (IFAST_SCALE_BITS != 2)
return 0;
- if (!IS_ALIGNED_SSE(jconst_idct_ifast_sse2))
- return 0;
+ if ((simd_support & JSIMD_SSE2) && IS_ALIGNED_SSE(jconst_idct_ifast_sse2))
+ return 1;
- return 1;
+ return 0;
}
GLOBAL(int)
jsimd_can_idct_float (void)
{
+ init_simd();
+
if (DCTSIZE != 8)
return 0;
if (sizeof(JCOEF) != 2)
@@ -741,33 +827,61 @@ jsimd_can_idct_float (void)
if (sizeof(FLOAT_MULT_TYPE) != 4)
return 0;
- if (!IS_ALIGNED_SSE(jconst_idct_float_sse2))
- return 0;
+ if ((simd_support & JSIMD_SSE2) && IS_ALIGNED_SSE(jconst_idct_float_sse2))
+ return 1;
- return 1;
+ return 0;
}
GLOBAL(void)
-jsimd_idct_islow (j_decompress_ptr cinfo, jpeg_component_info * compptr,
- JCOEFPTR coef_block, JSAMPARRAY output_buf,
- JDIMENSION output_col)
+jsimd_idct_islow (j_decompress_ptr cinfo, jpeg_component_info *compptr,
+ JCOEFPTR coef_block, JSAMPARRAY output_buf,
+ JDIMENSION output_col)
{
- jsimd_idct_islow_sse2(compptr->dct_table, coef_block, output_buf, output_col);
+ jsimd_idct_islow_sse2(compptr->dct_table, coef_block, output_buf,
+ output_col);
}
GLOBAL(void)
-jsimd_idct_ifast (j_decompress_ptr cinfo, jpeg_component_info * compptr,
- JCOEFPTR coef_block, JSAMPARRAY output_buf,
- JDIMENSION output_col)
+jsimd_idct_ifast (j_decompress_ptr cinfo, jpeg_component_info *compptr,
+ JCOEFPTR coef_block, JSAMPARRAY output_buf,
+ JDIMENSION output_col)
{
- jsimd_idct_ifast_sse2(compptr->dct_table, coef_block, output_buf, output_col);
+ jsimd_idct_ifast_sse2(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)
+jsimd_idct_float (j_decompress_ptr cinfo, jpeg_component_info *compptr,
+ JCOEFPTR coef_block, JSAMPARRAY output_buf,
+ JDIMENSION output_col)
+{
+ jsimd_idct_float_sse2(compptr->dct_table, coef_block, output_buf,
+ output_col);
+}
+
+GLOBAL(int)
+jsimd_can_huff_encode_one_block (void)
+{
+ init_simd();
+
+ if (DCTSIZE != 8)
+ return 0;
+ if (sizeof(JCOEF) != 2)
+ return 0;
+
+ if ((simd_support & JSIMD_SSE2) && simd_huffman &&
+ IS_ALIGNED_SSE(jconst_huff_encode_one_block))
+ return 1;
+
+ return 0;
+}
+
+GLOBAL(JOCTET*)
+jsimd_huff_encode_one_block (void *state, JOCTET *buffer, JCOEFPTR block,
+ int last_dc_val, c_derived_tbl *dctbl,
+ c_derived_tbl *actbl)
{
- jsimd_idct_float_sse2(compptr->dct_table, coef_block,
- output_buf, output_col);
+ return jsimd_huff_encode_one_block_sse2(state, buffer, block, last_dc_val,
+ dctbl, actbl);
}
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