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SIMD support for performing upsampling using MIPS DSPr2 instructions

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git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@996 632fc199-4ca6-4c93-a231-07263d6284db
This commit is contained in:
DRC
2013-07-27 21:50:02 +00:00
parent 6f2d3c2c97
commit 16962c1132
3 changed files with 177 additions and 0 deletions
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7
simd/jsimd.h
View File

@@ -602,6 +602,13 @@ EXTERN(void) jsimd_h2v2_fancy_upsample_mips_dspr2
JPP((int max_v_samp_factor, JDIMENSION downsampled_width,
JSAMPARRAY input_data, JSAMPARRAY * output_data_ptr));
EXTERN(void) jsimd_h2v2_upsample_mips_dspr2
JPP((int max_v_samp_factor, JDIMENSION output_width,
JSAMPARRAY input_data, JSAMPARRAY * output_data_ptr));
EXTERN(void) jsimd_h2v1_upsample_mips_dspr2
JPP((int max_v_samp_factor, JDIMENSION output_width,
JSAMPARRAY input_data, JSAMPARRAY * output_data_ptr));
/* SIMD Sample Conversion */
EXTERN(void) jsimd_convsamp_mmx JPP((JSAMPARRAY sample_data,
JDIMENSION start_col,

26
simd/jsimd_mips.c
View File

@@ -265,12 +265,32 @@ jsimd_h2v1_downsample (j_compress_ptr cinfo, jpeg_component_info * compptr,
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;
}
@@ -280,6 +300,9 @@ jsimd_h2v2_upsample (j_decompress_ptr cinfo,
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)
@@ -288,6 +311,9 @@ jsimd_h2v1_upsample (j_decompress_ptr cinfo,
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(int)

144
simd/jsimd_mips_dspr2.S
View File

@@ -694,3 +694,147 @@ LEAF_MIPS_DSPR2(jsimd_h2v2_downsample_mips_dspr2)
nop
END(jsimd_h2v2_downsample_mips_dspr2)
/*****************************************************************************/
LEAF_MIPS_DSPR2(jsimd_h2v1_upsample_mips_dspr2)
/*
* a0 - cinfo->max_v_samp_factor
* a1 - cinfo->output_width
* a2 - input_data
* a3 - output_data_ptr
*/
lw t7, 0(a3) // t7 = output_data
andi t8, a1, 0xf // t8 = residual
sll t0, a0, 2
beqz a0, 4f
addu t9, t7, t0 // t9 = output_data end address
0:
lw t5, 0(t7) // t5 = outptr
lw t6, 0(a2) // t6 = inptr
addu t3, t5, a1 // t3 = outptr + output_width (end address)
subu t3, t8 // t3 = end address - residual
beqz t3, 2f
nop
1:
ulw t0, 0(t6) // t0 = |P3|P2|P1|P0|
ulw t2, 4(t6) // t2 = |P7|P6|P5|P4|
srl t1, t0, 16 // t1 = |X|X|P3|P2|
ins t0, t0, 16, 16 // t0 = |P1|P0|P1|P0|
ins t1, t1, 16, 16 // t1 = |P3|P2|P3|P2|
ins t0, t0, 8, 16 // t0 = |P1|P1|P0|P0|
ins t1, t1, 8, 16 // t1 = |P3|P3|P2|P2|
usw t0, 0(t5)
usw t1, 4(t5)
srl t0, t2, 16 // t0 = |X|X|P7|P6|
ins t2, t2, 16, 16 // t2 = |P5|P4|P5|P4|
ins t0, t0, 16, 16 // t0 = |P7|P6|P7|P6|
ins t2, t2, 8, 16 // t2 = |P5|P5|P4|P4|
ins t0, t0, 8, 16 // t0 = |P7|P7|P6|P6|
usw t2, 8(t5)
usw t0, 12(t5)
addiu t5, 16
bne t5, t3, 1b
addiu t6, 8
beqz t8, 3f
move t4, t8
2:
lbu t1, 0(t6)
sb t1, 0(t5)
sb t1, 1(t5)
addiu t4, -2
addiu t6, 1
bgtz t4, 2b
addiu t5, 2
3:
addiu t7, 4
bne t9, t7, 0b
addiu a2, 4
4:
j ra
nop
END(jsimd_h2v1_upsample_mips_dspr2)
/*****************************************************************************/
LEAF_MIPS_DSPR2(jsimd_h2v2_upsample_mips_dspr2)
/*
* a0 - cinfo->max_v_samp_factor
* a1 - cinfo->output_width
* a2 - input_data
* a3 - output_data_ptr
*/
lw t7, 0(a3)
beqz a0, 7f
andi t9, a1, 0xf // t9 = residual
0:
lw t6, 0(a2) // t6 = inptr
lw t5, 0(t7) // t5 = outptr
addu t8, t5, a1 // t8 = outptr end address
subu t8, t9 // t8 = end address - residual
beqz t8, 2f
nop
1:
ulw t0, 0(t6)
srl t1, t0, 16
ins t0, t0, 16, 16
ins t0, t0, 8, 16
ins t1, t1, 16, 16
ins t1, t1, 8, 16
ulw t2, 4(t6)
usw t0, 0(t5)
usw t1, 4(t5)
srl t3, t2, 16
ins t2, t2, 16, 16
ins t2, t2, 8, 16
ins t3, t3, 16, 16
ins t3, t3, 8, 16
usw t2, 8(t5)
usw t3, 12(t5)
addiu t5, 16
bne t5, t8, 1b
addiu t6, 8
beqz t9, 3f
move t4, t9
2:
lbu t0, 0(t6)
sb t0, 0(t5)
sb t0, 1(t5)
addiu t4, -2
addiu t6, 1
bgtz t4, 2b
addiu t5, 2
3:
ulw t6, 0(t7) // t6 = outptr
ulw t5, 4(t7) // t5 = outptr[1]
addu t4, t6, a1 // t4 = new end address
subu t8, t4, t9
beqz t8, 5f
nop
4:
ulw t0, 0(t6)
ulw t1, 4(t6)
ulw t2, 8(t6)
usw t0, 0(t5)
ulw t0, 12(t6)
usw t1, 4(t5)
usw t2, 8(t5)
usw t0, 12(t5)
addiu t6, 16
bne t6, t8, 4b
addiu t5, 16
beqz t9, 6f
nop
5:
lbu t0, 0(t6)
sb t0, 0(t5)
addiu t6, 1
bne t6, t4, 5b
addiu t5, 1
6:
addiu t7, 8
addiu a0, -2
bgtz a0, 0b
addiu a2, 4
7:
j ra
nop
END(jsimd_h2v2_upsample_mips_dspr2)
/*****************************************************************************/