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Unified Diff: simd/jsimd_mips.c

Issue 1934113002: Update libjpeg_turbo to 1.4.90 from https://github.com/libjpeg-turbo/ (Closed) Base URL: https://chromium.googlesource.com/chromium/deps/libjpeg_turbo.git@master
Patch Set: Created 4 years, 8 months ago
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Index: simd/jsimd_mips.c
diff --git a/simd/jsimd_mips.c b/simd/jsimd_mips.c
new file mode 100644
index 0000000000000000000000000000000000000000..bdd991298d059b80a8004bf9bb2ae623ababd428
--- /dev/null
+++ b/simd/jsimd_mips.c
@@ -0,0 +1,1130 @@
+/*
+ * jsimd_mips.c
+ *
+ * Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
+ * Copyright 2009-2011, 2014 D. R. Commander
+ * Copyright (C) 2013-2014, MIPS Technologies, Inc., California
+ * 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
+ * MIPS architecture.
+ */
+
+#define JPEG_INTERNALS
+#include "../jinclude.h"
+#include "../jpeglib.h"
+#include "../jsimd.h"
+#include "../jdct.h"
+#include "../jsimddct.h"
+#include "jsimd.h"
+
+#include <stdio.h>
+#include <string.h>
+#include <ctype.h>
+
+static unsigned int simd_support = ~0;
+
+#if defined(__linux__)
+
+LOCAL(int)
+parse_proc_cpuinfo(const char* search_string)
+{
+ const char* file_name = "/proc/cpuinfo";
+ char cpuinfo_line[256];
+ FILE* f = NULL;
+ simd_support = 0;
+
+ if ((f = fopen(file_name, "r")) != NULL) {
+ while (fgets(cpuinfo_line, sizeof(cpuinfo_line), f) != NULL) {
+ if (strstr(cpuinfo_line, search_string) != NULL) {
+ fclose(f);
+ simd_support |= JSIMD_MIPS_DSPR2;
+ return 1;
+ }
+ }
+ fclose(f);
+ }
+ /* Did not find string in the proc file, or not Linux ELF. */
+ return 0;
+}
+
+#endif
+
+/*
+ * Check what SIMD accelerations are supported.
+ *
+ * FIXME: This code is racy under a multi-threaded environment.
+ */
+LOCAL(void)
+init_simd (void)
+{
+ if (simd_support != ~0U)
+ return;
+
+ simd_support = 0;
+
+#if defined(__MIPSEL__) && defined(__mips_dsp) && (__mips_dsp_rev >= 2)
+ simd_support |= JSIMD_MIPS_DSPR2;
+#elif defined(__linux__)
+ /* We still have a chance to use MIPS DSPR2 regardless of globally used
+ * -mdspr2 options passed to gcc by performing runtime detection via
+ * /proc/cpuinfo parsing on linux */
+ if (!parse_proc_cpuinfo("MIPS 74K"))
+ return;
+#endif
+}
+
+static const int mips_idct_ifast_coefs[4] = {
+ 0x45404540, // FIX( 1.082392200 / 2) = 17734 = 0x4546
+ 0x5A805A80, // FIX( 1.414213562 / 2) = 23170 = 0x5A82
+ 0x76407640, // FIX( 1.847759065 / 2) = 30274 = 0x7642
+ 0xAC60AC60 // FIX(-2.613125930 / 4) = -21407 = 0xAC61
+};
+
+/* The following struct is borrowed from jdsample.c */
+typedef void (*upsample1_ptr) (j_decompress_ptr cinfo,
+ jpeg_component_info *compptr,
+ JSAMPARRAY input_data,
+ JSAMPARRAY *output_data_ptr);
+
+typedef struct {
+ struct jpeg_upsampler pub;
+ JSAMPARRAY color_buf[MAX_COMPONENTS];
+ upsample1_ptr methods[MAX_COMPONENTS];
+ int next_row_out;
+ JDIMENSION rows_to_go;
+ int rowgroup_height[MAX_COMPONENTS];
+ UINT8 h_expand[MAX_COMPONENTS];
+ UINT8 v_expand[MAX_COMPONENTS];
+} my_upsampler;
+
+typedef my_upsampler *my_upsample_ptr;
+
+GLOBAL(int)
+jsimd_can_rgb_ycc (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 ((RGB_PIXELSIZE != 3) && (RGB_PIXELSIZE != 4))
+ return 0;
+
+ if (simd_support & JSIMD_MIPS_DSPR2)
+ return 1;
+
+ return 0;
+}
+
+GLOBAL(int)
+jsimd_can_rgb_gray (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 ((RGB_PIXELSIZE != 3) && (RGB_PIXELSIZE != 4))
+ return 0;
+
+ if (simd_support & JSIMD_MIPS_DSPR2)
+ 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;
+ if (sizeof(JDIMENSION) != 4)
+ return 0;
+ if ((RGB_PIXELSIZE != 3) && (RGB_PIXELSIZE != 4))
+ return 0;
+
+ if (simd_support & JSIMD_MIPS_DSPR2)
+ return 1;
+
+ return 0;
+}
+
+GLOBAL(int)
+jsimd_can_ycc_rgb565 (void)
+{
+ return 0;
+}
+
+GLOBAL(int)
+jsimd_c_can_null_convert (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_MIPS_DSPR2)
+ return 1;
+
+ return 0;
+}
+
+GLOBAL(void)
+jsimd_rgb_ycc_convert (j_compress_ptr cinfo,
+ JSAMPARRAY input_buf, JSAMPIMAGE output_buf,
+ JDIMENSION output_row, int num_rows)
+{
+ void (*mipsdspr2fct)(JDIMENSION, JSAMPARRAY, JSAMPIMAGE, JDIMENSION, int);
+
+ switch(cinfo->in_color_space) {
+ case JCS_EXT_RGB:
+ mipsdspr2fct=jsimd_extrgb_ycc_convert_mips_dspr2;
+ break;
+ case JCS_EXT_RGBX:
+ case JCS_EXT_RGBA:
+ mipsdspr2fct=jsimd_extrgbx_ycc_convert_mips_dspr2;
+ break;
+ case JCS_EXT_BGR:
+ mipsdspr2fct=jsimd_extbgr_ycc_convert_mips_dspr2;
+ break;
+ case JCS_EXT_BGRX:
+ case JCS_EXT_BGRA:
+ mipsdspr2fct=jsimd_extbgrx_ycc_convert_mips_dspr2;
+ break;
+ case JCS_EXT_XBGR:
+ case JCS_EXT_ABGR:
+ mipsdspr2fct=jsimd_extxbgr_ycc_convert_mips_dspr2;
+
+ break;
+ case JCS_EXT_XRGB:
+ case JCS_EXT_ARGB:
+ mipsdspr2fct=jsimd_extxrgb_ycc_convert_mips_dspr2;
+ break;
+ default:
+ mipsdspr2fct=jsimd_extrgb_ycc_convert_mips_dspr2;
+ break;
+ }
+
+ if (simd_support & JSIMD_MIPS_DSPR2)
+ mipsdspr2fct(cinfo->image_width, input_buf, output_buf, output_row,
+ num_rows);
+}
+
+GLOBAL(void)
+jsimd_rgb_gray_convert (j_compress_ptr cinfo,
+ JSAMPARRAY input_buf, JSAMPIMAGE output_buf,
+ JDIMENSION output_row, int num_rows)
+{
+ void (*mipsdspr2fct)(JDIMENSION, JSAMPARRAY, JSAMPIMAGE, JDIMENSION, int);
+
+ switch(cinfo->in_color_space) {
+ case JCS_EXT_RGB:
+ mipsdspr2fct=jsimd_extrgb_gray_convert_mips_dspr2;
+ break;
+ case JCS_EXT_RGBX:
+ case JCS_EXT_RGBA:
+ mipsdspr2fct=jsimd_extrgbx_gray_convert_mips_dspr2;
+ break;
+ case JCS_EXT_BGR:
+ mipsdspr2fct=jsimd_extbgr_gray_convert_mips_dspr2;
+ break;
+ case JCS_EXT_BGRX:
+ case JCS_EXT_BGRA:
+ mipsdspr2fct=jsimd_extbgrx_gray_convert_mips_dspr2;
+ break;
+ case JCS_EXT_XBGR:
+ case JCS_EXT_ABGR:
+ mipsdspr2fct=jsimd_extxbgr_gray_convert_mips_dspr2;
+ break;
+ case JCS_EXT_XRGB:
+ case JCS_EXT_ARGB:
+ mipsdspr2fct=jsimd_extxrgb_gray_convert_mips_dspr2;
+ break;
+ default:
+ mipsdspr2fct=jsimd_extrgb_gray_convert_mips_dspr2;
+ break;
+ }
+
+ if (simd_support & JSIMD_MIPS_DSPR2)
+ mipsdspr2fct(cinfo->image_width, input_buf, output_buf, output_row,
+ num_rows);
+}
+
+GLOBAL(void)
+jsimd_ycc_rgb_convert (j_decompress_ptr cinfo,
+ JSAMPIMAGE input_buf, JDIMENSION input_row,
+ JSAMPARRAY output_buf, int num_rows)
+{
+ void (*mipsdspr2fct)(JDIMENSION, JSAMPIMAGE, JDIMENSION, JSAMPARRAY, int);
+
+ switch(cinfo->out_color_space) {
+ case JCS_EXT_RGB:
+ mipsdspr2fct=jsimd_ycc_extrgb_convert_mips_dspr2;
+ break;
+ case JCS_EXT_RGBX:
+ case JCS_EXT_RGBA:
+ mipsdspr2fct=jsimd_ycc_extrgbx_convert_mips_dspr2;
+ break;
+ case JCS_EXT_BGR:
+ mipsdspr2fct=jsimd_ycc_extbgr_convert_mips_dspr2;
+ break;
+ case JCS_EXT_BGRX:
+ case JCS_EXT_BGRA:
+ mipsdspr2fct=jsimd_ycc_extbgrx_convert_mips_dspr2;
+ break;
+ case JCS_EXT_XBGR:
+ case JCS_EXT_ABGR:
+ mipsdspr2fct=jsimd_ycc_extxbgr_convert_mips_dspr2;
+ break;
+ case JCS_EXT_XRGB:
+ case JCS_EXT_ARGB:
+ mipsdspr2fct=jsimd_ycc_extxrgb_convert_mips_dspr2;
+ break;
+ default:
+ mipsdspr2fct=jsimd_ycc_extrgb_convert_mips_dspr2;
+ break;
+ }
+
+ if (simd_support & JSIMD_MIPS_DSPR2)
+ mipsdspr2fct(cinfo->output_width, input_buf, input_row, output_buf,
+ 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(void)
+jsimd_c_null_convert (j_compress_ptr cinfo,
+ JSAMPARRAY input_buf, JSAMPIMAGE output_buf,
+ JDIMENSION output_row, int num_rows)
+{
+ if (simd_support & JSIMD_MIPS_DSPR2)
+ jsimd_c_null_convert_mips_dspr2(cinfo->image_width, input_buf,
+ output_buf, output_row, num_rows,
+ cinfo->num_components);
+}
+
+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;
+
+ if (simd_support & JSIMD_MIPS_DSPR2)
+ return 1;
+
+ return 0;
+}
+
+GLOBAL(int)
+jsimd_can_h2v2_smooth_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;
+ if(DCTSIZE != 8)
+ return 0;
+
+ if (simd_support & JSIMD_MIPS_DSPR2)
+ 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;
+
+ if (simd_support & JSIMD_MIPS_DSPR2)
+ return 1;
+
+ return 0;
+}
+
+GLOBAL(void)
+jsimd_h2v2_downsample (j_compress_ptr cinfo, jpeg_component_info *compptr,
+ JSAMPARRAY input_data, JSAMPARRAY output_data)
+{
+ if (simd_support & JSIMD_MIPS_DSPR2)
+ jsimd_h2v2_downsample_mips_dspr2(cinfo->image_width,
+ cinfo->max_v_samp_factor,
+ compptr->v_samp_factor,
+ compptr->width_in_blocks, input_data,
+ output_data);
+}
+
+GLOBAL(void)
+jsimd_h2v2_smooth_downsample (j_compress_ptr cinfo,
+ jpeg_component_info *compptr,
+ JSAMPARRAY input_data, JSAMPARRAY output_data)
+{
+ jsimd_h2v2_smooth_downsample_mips_dspr2(input_data, output_data,
+ compptr->v_samp_factor,
+ cinfo->max_v_samp_factor,
+ cinfo->smoothing_factor,
+ compptr->width_in_blocks,
+ cinfo->image_width);
+}
+
+GLOBAL(void)
+jsimd_h2v1_downsample (j_compress_ptr cinfo, jpeg_component_info *compptr,
+ JSAMPARRAY input_data, JSAMPARRAY output_data)
+{
+ if (simd_support & JSIMD_MIPS_DSPR2)
+ jsimd_h2v1_downsample_mips_dspr2(cinfo->image_width,
+ cinfo->max_v_samp_factor,
+ compptr->v_samp_factor,
+ compptr->width_in_blocks,
+ input_data, output_data);
+}
+
+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;
+
+ if (simd_support & JSIMD_MIPS_DSPR2)
+ 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;
+
+ if (simd_support & JSIMD_MIPS_DSPR2)
+ return 1;
+
+ return 0;
+}
+
+GLOBAL(int)
+jsimd_can_int_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_MIPS_DSPR2)
+ return 1;
+
+ return 0;
+}
+
+GLOBAL(void)
+jsimd_h2v2_upsample (j_decompress_ptr cinfo,
+ jpeg_component_info *compptr,
+ JSAMPARRAY input_data,
+ JSAMPARRAY *output_data_ptr)
+{
+ if (simd_support & JSIMD_MIPS_DSPR2)
+ jsimd_h2v2_upsample_mips_dspr2(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,
+ JSAMPARRAY input_data,
+ JSAMPARRAY *output_data_ptr)
+{
+ if (simd_support & JSIMD_MIPS_DSPR2)
+ jsimd_h2v1_upsample_mips_dspr2(cinfo->max_v_samp_factor,
+ cinfo->output_width, input_data,
+ output_data_ptr);
+}
+
+GLOBAL(void)
+jsimd_int_upsample (j_decompress_ptr cinfo, jpeg_component_info *compptr,
+ JSAMPARRAY input_data, JSAMPARRAY *output_data_ptr)
+{
+ my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample;
+
+ jsimd_int_upsample_mips_dspr2(upsample->h_expand[compptr->component_index],
+ upsample->v_expand[compptr->component_index],
+ input_data, output_data_ptr,
+ cinfo->output_width,
+ cinfo->max_v_samp_factor);
+}
+
+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 (simd_support & JSIMD_MIPS_DSPR2)
+ 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 (simd_support & JSIMD_MIPS_DSPR2)
+ 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)
+{
+ if (simd_support & JSIMD_MIPS_DSPR2)
+ jsimd_h2v2_fancy_upsample_mips_dspr2(cinfo->max_v_samp_factor,
+ compptr->downsampled_width,
+ input_data, 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_MIPS_DSPR2)
+ jsimd_h2v1_fancy_upsample_mips_dspr2(cinfo->max_v_samp_factor,
+ compptr->downsampled_width,
+ input_data, output_data_ptr);
+}
+
+GLOBAL(int)
+jsimd_can_h2v2_merged_upsample (void)
+{
+ init_simd();
+
+ if (BITS_IN_JSAMPLE != 8)
+ return 0;
+ if (sizeof(JDIMENSION) != 4)
+ return 0;
+
+ if (simd_support & JSIMD_MIPS_DSPR2)
+ return 1;
+
+ return 0;
+}
+
+GLOBAL(int)
+jsimd_can_h2v1_merged_upsample (void)
+{
+ init_simd();
+
+ if (BITS_IN_JSAMPLE != 8)
+ return 0;
+ if (sizeof(JDIMENSION) != 4)
+ return 0;
+
+ if (simd_support & JSIMD_MIPS_DSPR2)
+ return 1;
+
+ return 0;
+}
+
+GLOBAL(void)
+jsimd_h2v2_merged_upsample (j_decompress_ptr cinfo,
+ JSAMPIMAGE input_buf,
+ JDIMENSION in_row_group_ctr,
+ JSAMPARRAY output_buf)
+{
+ void (*mipsdspr2fct)(JDIMENSION, JSAMPIMAGE, JDIMENSION, JSAMPARRAY,
+ JSAMPLE *);
+
+ switch(cinfo->out_color_space) {
+ case JCS_EXT_RGB:
+ mipsdspr2fct=jsimd_h2v2_extrgb_merged_upsample_mips_dspr2;
+ break;
+ case JCS_EXT_RGBX:
+ case JCS_EXT_RGBA:
+ mipsdspr2fct=jsimd_h2v2_extrgbx_merged_upsample_mips_dspr2;
+ break;
+ case JCS_EXT_BGR:
+ mipsdspr2fct=jsimd_h2v2_extbgr_merged_upsample_mips_dspr2;
+ break;
+ case JCS_EXT_BGRX:
+ case JCS_EXT_BGRA:
+ mipsdspr2fct=jsimd_h2v2_extbgrx_merged_upsample_mips_dspr2;
+ break;
+ case JCS_EXT_XBGR:
+ case JCS_EXT_ABGR:
+ mipsdspr2fct=jsimd_h2v2_extxbgr_merged_upsample_mips_dspr2;
+ break;
+ case JCS_EXT_XRGB:
+ case JCS_EXT_ARGB:
+ mipsdspr2fct=jsimd_h2v2_extxrgb_merged_upsample_mips_dspr2;
+ break;
+ default:
+ mipsdspr2fct=jsimd_h2v2_extrgb_merged_upsample_mips_dspr2;
+ break;
+ }
+
+ mipsdspr2fct(cinfo->output_width, input_buf, in_row_group_ctr, output_buf,
+ cinfo->sample_range_limit);
+}
+
+GLOBAL(void)
+jsimd_h2v1_merged_upsample (j_decompress_ptr cinfo,
+ JSAMPIMAGE input_buf,
+ JDIMENSION in_row_group_ctr,
+ JSAMPARRAY output_buf)
+{
+ void (*mipsdspr2fct)(JDIMENSION, JSAMPIMAGE, JDIMENSION, JSAMPARRAY,
+ JSAMPLE *);
+
+ switch(cinfo->out_color_space) {
+ case JCS_EXT_RGB:
+ mipsdspr2fct=jsimd_h2v1_extrgb_merged_upsample_mips_dspr2;
+ break;
+ case JCS_EXT_RGBX:
+ case JCS_EXT_RGBA:
+ mipsdspr2fct=jsimd_h2v1_extrgbx_merged_upsample_mips_dspr2;
+ break;
+ case JCS_EXT_BGR:
+ mipsdspr2fct=jsimd_h2v1_extbgr_merged_upsample_mips_dspr2;
+ break;
+ case JCS_EXT_BGRX:
+ case JCS_EXT_BGRA:
+ mipsdspr2fct=jsimd_h2v1_extbgrx_merged_upsample_mips_dspr2;
+ break;
+ case JCS_EXT_XBGR:
+ case JCS_EXT_ABGR:
+ mipsdspr2fct=jsimd_h2v1_extxbgr_merged_upsample_mips_dspr2;
+ break;
+ case JCS_EXT_XRGB:
+ case JCS_EXT_ARGB:
+ mipsdspr2fct=jsimd_h2v1_extxrgb_merged_upsample_mips_dspr2;
+ break;
+ default:
+ mipsdspr2fct=jsimd_h2v1_extrgb_merged_upsample_mips_dspr2;
+ break;
+ }
+
+ mipsdspr2fct(cinfo->output_width, input_buf, in_row_group_ctr, output_buf,
+ cinfo->sample_range_limit);
+}
+
+GLOBAL(int)
+jsimd_can_convsamp (void)
+{
+ init_simd();
+
+ /* The code is optimised for these values only */
+ if (DCTSIZE != 8)
+ return 0;
+ if (BITS_IN_JSAMPLE != 8)
+ return 0;
+ if (sizeof(JDIMENSION) != 4)
+ return 0;
+ if (sizeof(DCTELEM) != 2)
+ return 0;
+
+ if (simd_support & JSIMD_MIPS_DSPR2)
+ 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;
+ if (sizeof(JCOEF) != 2)
+ return 0;
+ if (BITS_IN_JSAMPLE != 8)
+ return 0;
+ if (sizeof(JDIMENSION) != 4)
+ return 0;
+ if (sizeof(ISLOW_MULT_TYPE) != 2)
+ return 0;
+
+ if (simd_support & JSIMD_MIPS_DSPR2)
+ return 1;
+
+ return 0;
+}
+
+GLOBAL(void)
+jsimd_convsamp (JSAMPARRAY sample_data, JDIMENSION start_col,
+ DCTELEM *workspace)
+{
+ if (simd_support & JSIMD_MIPS_DSPR2)
+ jsimd_convsamp_mips_dspr2(sample_data, start_col, workspace);
+}
+
+GLOBAL(void)
+jsimd_convsamp_float (JSAMPARRAY sample_data, JDIMENSION start_col,
+ FAST_FLOAT *workspace)
+{
+ if ((simd_support & JSIMD_MIPS_DSPR2))
+ jsimd_convsamp_float_mips_dspr2(sample_data, start_col, workspace);
+}
+
+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 (simd_support & JSIMD_MIPS_DSPR2)
+ 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 (simd_support & JSIMD_MIPS_DSPR2)
+ return 1;
+
+ return 0;
+}
+
+GLOBAL(int)
+jsimd_can_fdct_float (void)
+{
+ init_simd();
+
+ return 0;
+}
+
+GLOBAL(void)
+jsimd_fdct_islow (DCTELEM *data)
+{
+ if (simd_support & JSIMD_MIPS_DSPR2)
+ jsimd_fdct_islow_mips_dspr2(data);
+}
+
+GLOBAL(void)
+jsimd_fdct_ifast (DCTELEM *data)
+{
+ if (simd_support & JSIMD_MIPS_DSPR2)
+ jsimd_fdct_ifast_mips_dspr2(data);
+}
+
+GLOBAL(void)
+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;
+ if (sizeof(JCOEF) != 2)
+ return 0;
+ if (sizeof(DCTELEM) != 2)
+ return 0;
+
+ if (simd_support & JSIMD_MIPS_DSPR2)
+ 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;
+ if (sizeof(JCOEF) != 2)
+ return 0;
+ if (BITS_IN_JSAMPLE != 8)
+ return 0;
+ if (sizeof(JDIMENSION) != 4)
+ return 0;
+ if (sizeof(ISLOW_MULT_TYPE) != 2)
+ return 0;
+
+ if (simd_support & JSIMD_MIPS_DSPR2)
+ return 1;
+
+ return 0;
+}
+
+GLOBAL(void)
+jsimd_quantize (JCOEFPTR coef_block, DCTELEM *divisors,
+ DCTELEM *workspace)
+{
+ if (simd_support & JSIMD_MIPS_DSPR2)
+ jsimd_quantize_mips_dspr2(coef_block, divisors, workspace);
+}
+
+GLOBAL(void)
+jsimd_quantize_float (JCOEFPTR coef_block, FAST_FLOAT *divisors,
+ FAST_FLOAT *workspace)
+{
+ if (simd_support & JSIMD_MIPS_DSPR2)
+ jsimd_quantize_float_mips_dspr2(coef_block, divisors, workspace);
+}
+
+GLOBAL(int)
+jsimd_can_idct_2x2 (void)
+{
+ init_simd();
+
+ /* The code is optimised for these values only */
+ if (DCTSIZE != 8)
+ return 0;
+ if (sizeof(JCOEF) != 2)
+ return 0;
+ if (BITS_IN_JSAMPLE != 8)
+ return 0;
+ if (sizeof(JDIMENSION) != 4)
+ return 0;
+ if (sizeof(ISLOW_MULT_TYPE) != 2)
+ return 0;
+
+ if (simd_support & JSIMD_MIPS_DSPR2)
+ 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;
+ if (sizeof(JCOEF) != 2)
+ return 0;
+ if (BITS_IN_JSAMPLE != 8)
+ return 0;
+ if (sizeof(JDIMENSION) != 4)
+ return 0;
+ if (sizeof(ISLOW_MULT_TYPE) != 2)
+ return 0;
+
+ if (simd_support & JSIMD_MIPS_DSPR2)
+ return 1;
+
+ return 0;
+}
+
+GLOBAL(int)
+jsimd_can_idct_6x6 (void)
+{
+ init_simd();
+
+ /* The code is optimised for these values only */
+ if (DCTSIZE != 8)
+ return 0;
+ if (sizeof(JCOEF) != 2)
+ return 0;
+ if (BITS_IN_JSAMPLE != 8)
+ return 0;
+ if (sizeof(JDIMENSION) != 4)
+ return 0;
+ if (sizeof(ISLOW_MULT_TYPE) != 2)
+ return 0;
+
+ if (simd_support & JSIMD_MIPS_DSPR2)
+ return 1;
+
+ return 0;
+}
+
+GLOBAL(int)
+jsimd_can_idct_12x12 (void)
+{
+ init_simd();
+
+ if (BITS_IN_JSAMPLE != 8)
+ return 0;
+ if (DCTSIZE != 8)
+ return 0;
+ if (sizeof(JCOEF) != 2)
+ return 0;
+ if (sizeof(JDIMENSION) != 4)
+ return 0;
+ if (sizeof(ISLOW_MULT_TYPE) != 2)
+ return 0;
+
+ if (simd_support & JSIMD_MIPS_DSPR2)
+ return 1;
+
+ return 0;
+}
+
+GLOBAL(void)
+jsimd_idct_2x2 (j_decompress_ptr cinfo, jpeg_component_info *compptr,
+ JCOEFPTR coef_block, JSAMPARRAY output_buf,
+ JDIMENSION output_col)
+{
+ if (simd_support & JSIMD_MIPS_DSPR2)
+ jsimd_idct_2x2_mips_dspr2(compptr->dct_table, coef_block, output_buf,
+ output_col);
+}
+
+GLOBAL(void)
+jsimd_idct_4x4 (j_decompress_ptr cinfo, jpeg_component_info *compptr,
+ JCOEFPTR coef_block, JSAMPARRAY output_buf,
+ JDIMENSION output_col)
+{
+ if (simd_support & JSIMD_MIPS_DSPR2) {
+ int workspace[DCTSIZE*4]; /* buffers data between passes */
+ jsimd_idct_4x4_mips_dspr2(compptr->dct_table, coef_block, output_buf,
+ output_col, workspace);
+ }
+}
+
+GLOBAL(void)
+jsimd_idct_6x6 (j_decompress_ptr cinfo, jpeg_component_info *compptr,
+ JCOEFPTR coef_block, JSAMPARRAY output_buf,
+ JDIMENSION output_col)
+{
+ if (simd_support & JSIMD_MIPS_DSPR2)
+ jsimd_idct_6x6_mips_dspr2(compptr->dct_table, coef_block, output_buf,
+ output_col);
+}
+
+GLOBAL(void)
+jsimd_idct_12x12 (j_decompress_ptr cinfo, jpeg_component_info *compptr,
+ JCOEFPTR coef_block,
+ JSAMPARRAY output_buf, JDIMENSION output_col)
+{
+ if (simd_support & JSIMD_MIPS_DSPR2) {
+ int workspace[96];
+ int output[12] = {
+ (int)(output_buf[0] + output_col),
+ (int)(output_buf[1] + output_col),
+ (int)(output_buf[2] + output_col),
+ (int)(output_buf[3] + output_col),
+ (int)(output_buf[4] + output_col),
+ (int)(output_buf[5] + output_col),
+ (int)(output_buf[6] + output_col),
+ (int)(output_buf[7] + output_col),
+ (int)(output_buf[8] + output_col),
+ (int)(output_buf[9] + output_col),
+ (int)(output_buf[10] + output_col),
+ (int)(output_buf[11] + output_col),
+ };
+ jsimd_idct_12x12_pass1_mips_dspr2(coef_block, compptr->dct_table,
+ workspace);
+ jsimd_idct_12x12_pass2_mips_dspr2(workspace, output);
+ }
+}
+
+GLOBAL(int)
+jsimd_can_idct_islow (void)
+{
+ init_simd();
+
+ /* The code is optimised for these values only */
+ if (DCTSIZE != 8)
+ return 0;
+ if (sizeof(JCOEF) != 2)
+ return 0;
+ if (BITS_IN_JSAMPLE != 8)
+ return 0;
+ if (sizeof(JDIMENSION) != 4)
+ return 0;
+ if (sizeof(ISLOW_MULT_TYPE) != 2)
+ return 0;
+
+ if (simd_support & JSIMD_MIPS_DSPR2)
+ 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;
+ if (sizeof(JCOEF) != 2)
+ return 0;
+ if (BITS_IN_JSAMPLE != 8)
+ return 0;
+ if (sizeof(JDIMENSION) != 4)
+ return 0;
+ if (sizeof(IFAST_MULT_TYPE) != 2)
+ return 0;
+ if (IFAST_SCALE_BITS != 2)
+ return 0;
+
+ if (simd_support & JSIMD_MIPS_DSPR2)
+ return 1;
+
+ return 0;
+}
+
+GLOBAL(int)
+jsimd_can_idct_float (void)
+{
+ init_simd();
+
+ return 0;
+}
+
+GLOBAL(void)
+jsimd_idct_islow (j_decompress_ptr cinfo, jpeg_component_info *compptr,
+ JCOEFPTR coef_block, JSAMPARRAY output_buf,
+ JDIMENSION output_col)
+{
+ if (simd_support & JSIMD_MIPS_DSPR2) {
+ int output[8] = {
+ (int)(output_buf[0] + output_col),
+ (int)(output_buf[1] + output_col),
+ (int)(output_buf[2] + output_col),
+ (int)(output_buf[3] + output_col),
+ (int)(output_buf[4] + output_col),
+ (int)(output_buf[5] + output_col),
+ (int)(output_buf[6] + output_col),
+ (int)(output_buf[7] + output_col),
+ };
+
+ jsimd_idct_islow_mips_dspr2(coef_block, compptr->dct_table,
+ output, IDCT_range_limit(cinfo));
+ }
+}
+
+GLOBAL(void)
+jsimd_idct_ifast (j_decompress_ptr cinfo, jpeg_component_info *compptr,
+ JCOEFPTR coef_block, JSAMPARRAY output_buf,
+ JDIMENSION output_col)
+{
+ if (simd_support & JSIMD_MIPS_DSPR2) {
+ JCOEFPTR inptr;
+ IFAST_MULT_TYPE *quantptr;
+ DCTELEM workspace[DCTSIZE2]; /* buffers data between passes */
+
+ /* Pass 1: process columns from input, store into work array. */
+
+ inptr = coef_block;
+ quantptr = (IFAST_MULT_TYPE *) compptr->dct_table;
+
+ jsimd_idct_ifast_cols_mips_dspr2(inptr, quantptr,
+ workspace, mips_idct_ifast_coefs);
+
+ /* Pass 2: process rows from work array, store into output array. */
+ /* Note that we must descale the results by a factor of 8 == 2**3, */
+ /* and also undo the PASS1_BITS scaling. */
+
+ jsimd_idct_ifast_rows_mips_dspr2(workspace, output_buf,
+ output_col, mips_idct_ifast_coefs);
+ }
+}
+
+GLOBAL(void)
+jsimd_idct_float (j_decompress_ptr cinfo, jpeg_component_info *compptr,
+ JCOEFPTR coef_block, JSAMPARRAY output_buf,
+ JDIMENSION output_col)
+{
+}
+
+GLOBAL(int)
+jsimd_can_huff_encode_one_block (void)
+{
+ 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)
+{
+ return NULL;
+}
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