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SIMD-accelerated 1/2 and 1/4 decompression scaling for MIPS DSPr2

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git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1046 632fc199-4ca6-4c93-a231-07263d6284db
This commit is contained in:
DRC
2013-09-27 17:43:23 +00:00
parent 101197d2a2
commit e2da0467a6
3 changed files with 632 additions and 0 deletions
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43
simd/jsimd_mips.c
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@@ -528,12 +528,46 @@ jsimd_quantize_float (JCOEFPTR coef_block, FAST_FLOAT * divisors,
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;
}
@@ -542,6 +576,9 @@ 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)
@@ -549,6 +586,12 @@ 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(int)