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SIMD support for performing fancy upsampling using MIPS DSPr2 instructions

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This commit is contained in:
DRC
2013-07-27 21:44:14 +00:00
parent 64da9d6ba8
commit 41e3657631
3 changed files with 272 additions and 0 deletions
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7
simd/jsimd.h
View File

@@ -586,6 +586,13 @@ EXTERN(void) jsimd_h2v1_fancy_upsample_neon
JPP((int max_v_samp_factor, JDIMENSION downsampled_width,
JSAMPARRAY input_data, JSAMPARRAY * output_data_ptr));
EXTERN(void) jsimd_h2v1_fancy_upsample_mips_dspr2
JPP((int max_v_samp_factor, JDIMENSION downsampled_width,
JSAMPARRAY input_data, JSAMPARRAY * output_data_ptr));
EXTERN(void) jsimd_h2v2_fancy_upsample_mips_dspr2
JPP((int max_v_samp_factor, JDIMENSION downsampled_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_upsample (j_decompress_ptr cinfo,
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;
}
@@ -280,6 +300,9 @@ jsimd_h2v2_fancy_upsample (j_decompress_ptr cinfo,
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)
@@ -288,6 +311,9 @@ jsimd_h2v1_fancy_upsample (j_decompress_ptr cinfo,
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)

239
simd/jsimd_mips_dspr2.S
View File

@@ -248,3 +248,242 @@ GENERATE_JSIMD_YCC_RGB_CONVERT_MIPS_DSPR2 extxbgr, 4, 3, 2, 1, 0
GENERATE_JSIMD_YCC_RGB_CONVERT_MIPS_DSPR2 extxrgb, 4, 1, 2, 3, 0
/*****************************************************************************/
/*
* jsimd_h2v2_fancy_upsample_mips_dspr2
*
* Fancy processing for the common case of 2:1 horizontal and 2:1 vertical.
*/
LEAF_MIPS_DSPR2(jsimd_h2v2_fancy_upsample_mips_dspr2)
/*
* a0 - cinfo->max_v_samp_factor
* a1 - downsampled_width
* a2 - input_data
* a3 - output_data_ptr
*/
SAVE_REGS_ON_STACK 24, s0, s1, s2, s3, s4, s5
li s4, 0
lw s2, 0(a3) // s2 = *output_data_ptr
0:
li t9, 2
lw s1, -4(a2) // s1 = inptr1
1:
lw s0, 0(a2) // s0 = inptr0
lwx s3, s4(s2)
addiu s5, a1, -2 // s5 = downsampled_width - 2
srl t4, s5, 1
sll t4, t4, 1
lbu t0, 0(s0)
lbu t1, 1(s0)
lbu t2, 0(s1)
lbu t3, 1(s1)
addiu s0, 2
addiu s1, 2
addu t8, s0, t4 // t8 = end address
andi s5, s5, 1 // s5 = residual
sll t4, t0, 1
sll t6, t1, 1
addu t0, t0, t4 // t0 = (*inptr0++) * 3
addu t1, t1, t6 // t1 = (*inptr0++) * 3
addu t7, t0, t2 // t7 = thiscolsum
addu t6, t1, t3 // t5 = nextcolsum
sll t0, t7, 2 // t0 = thiscolsum * 4
subu t1, t0, t7 // t1 = thiscolsum * 3
shra_r.w t0, t0, 4
addiu t1, 7
addu t1, t1, t6
srl t1, t1, 4
sb t0, 0(s3)
sb t1, 1(s3)
addiu s3, 2
2:
lh t0, 0(s0) // t0 = A3|A2
lh t2, 0(s1) // t2 = B3|B2
addiu s0, 2
addiu s1, 2
preceu.ph.qbr t0, t0 // t0 = 0|A3|0|A2
preceu.ph.qbr t2, t2 // t2 = 0|B3|0|B2
shll.ph t1, t0, 1
sll t3, t6, 1
addu.ph t0, t1, t0 // t0 = A3*3|A2*3
addu t3, t3, t6 // t3 = this * 3
addu.ph t0, t0, t2 // t0 = next2|next1
addu t1, t3, t7
andi t7, t0, 0xFFFF // t7 = next1
sll t2, t7, 1
addu t2, t7, t2 // t2 = next1*3
addu t4, t2, t6
srl t6, t0, 16 // t6 = next2
shra_r.w t1, t1, 4 // t1 = (this*3 + last + 8) >> 4
addu t0, t3, t7
addiu t0, 7
srl t0, t0, 4 // t0 = (this*3 + next1 + 7) >> 4
shra_r.w t4, t4, 4 // t3 = (next1*3 + this + 8) >> 4
addu t2, t2, t6
addiu t2, 7
srl t2, t2, 4 // t2 = (next1*3 + next2 + 7) >> 4
sb t1, 0(s3)
sb t0, 1(s3)
sb t4, 2(s3)
sb t2, 3(s3)
bne t8, s0, 2b
addiu s3, 4
beqz s5, 4f
addu t8, s0, s5
3:
lbu t0, 0(s0)
lbu t2, 0(s1)
addiu s0, 1
addiu s1, 1
sll t3, t6, 1
sll t1, t0, 1
addu t1, t0, t1 // t1 = inptr0 * 3
addu t3, t3, t6 // t3 = thiscolsum * 3
addu t5, t1, t2
addu t1, t3, t7
shra_r.w t1, t1, 4
addu t0, t3, t5
addiu t0, 7
srl t0, t0, 4
sb t1, 0(s3)
sb t0, 1(s3)
addiu s3, 2
move t7, t6
bne t8, s0, 3b
move t6, t5
4:
sll t0, t6, 2 // t0 = thiscolsum * 4
subu t1, t0, t6 // t1 = thiscolsum * 3
addu t1, t1, t7
addiu s4, 4
shra_r.w t1, t1, 4
addiu t0, 7
srl t0, t0, 4
sb t1, 0(s3)
sb t0, 1(s3)
addiu t9, -1
addiu s3, 2
bnez t9, 1b
lw s1, 4(a2)
srl t0, s4, 2
subu t0, a0, t0
bgtz t0, 0b
addiu a2, 4
RESTORE_REGS_FROM_STACK 24, s0, s1, s2, s3, s4, s5
j ra
nop
END(jsimd_h2v2_fancy_upsample_mips_dspr2)
/*****************************************************************************/
LEAF_MIPS_DSPR2(jsimd_h2v1_fancy_upsample_mips_dspr2)
/*
* a0 - cinfo->max_v_samp_factor
* a1 - downsampled_width
* a2 - input_data
* a3 - output_data_ptr
*/
SAVE_REGS_ON_STACK 16, s0, s1, s2, s3
.set at
beqz a0, 3f
sll t0, a0, 2
lw s1, 0(a3)
addu s0, s1, t0
li s3, 0x10001
0:
addiu t8, a1, -2
srl t9, t8, 2
lw t7, 0(a2)
lw s2, 0(s1)
lbu t0, 0(t7)
lbu t1, 1(t7) // t1 = inptr[1]
sll t2, t0, 1
addu t2, t2, t0 // t2 = invalue*3
addu t2, t2, t1
shra_r.w t2, t2, 2
sb t0, 0(s2)
sb t2, 1(s2)
beqz t9, 11f
addiu s2, 2
1:
ulw t0, 0(t7) // t0 = |P3|P2|P1|P0|
ulw t1, 1(t7)
ulh t2, 4(t7) // t2 = |0|0|P5|P4|
preceu.ph.qbl t3, t0 // t3 = |0|P3|0|P2|
preceu.ph.qbr t0, t0 // t0 = |0|P1|0|P0|
preceu.ph.qbr t2, t2 // t2 = |0|P5|0|P4|
preceu.ph.qbl t4, t1 // t4 = |0|P4|0|P3|
preceu.ph.qbr t1, t1 // t1 = |0|P2|0|P1|
shll.ph t5, t4, 1
shll.ph t6, t1, 1
addu.ph t5, t5, t4 // t5 = |P4*3|P3*3|
addu.ph t6, t6, t1 // t6 = |P2*3|P1*3|
addu.ph t4, t3, s3
addu.ph t0, t0, s3
addu.ph t4, t4, t5
addu.ph t0, t0, t6
shrl.ph t4, t4, 2 // t4 = |0|P3|0|P2|
shrl.ph t0, t0, 2 // t0 = |0|P1|0|P0|
addu.ph t2, t2, t5
addu.ph t3, t3, t6
shra_r.ph t2, t2, 2 // t2 = |0|P5|0|P4|
shra_r.ph t3, t3, 2 // t3 = |0|P3|0|P2|
shll.ph t2, t2, 8
shll.ph t3, t3, 8
or t2, t4, t2
or t3, t3, t0
addiu t9, -1
usw t3, 0(s2)
usw t2, 4(s2)
addiu s2, 8
bgtz t9, 1b
addiu t7, 4
11:
andi t8, 3
beqz t8, 3f
addiu t7, 1
2:
lbu t0, 0(t7)
addiu t7, 1
sll t1, t0, 1
addu t2, t0, t1 // t2 = invalue
lbu t3, -2(t7)
lbu t4, 0(t7)
addiu t3, 1
addiu t4, 2
addu t3, t3, t2
addu t4, t4, t2
srl t3, 2
srl t4, 2
sb t3, 0(s2)
sb t4, 1(s2)
addiu t8, -1
bgtz t8, 2b
addiu s2, 2
lbu t0, 0(t7)
lbu t2, -1(t7)
sll t1, t0, 1
addu t1, t1, t0 // t1 = invalue * 3
addu t1, t1, t2
addiu t1, 1
srl t1, t1, 2
sb t1, 0(s2)
sb t0, 1(s2)
addiu s1, 4
bne s1, s0, 0b
addiu a2, 4
3:
RESTORE_REGS_FROM_STACK 16, s0, s1, s2, s3
j ra
nop
END(jsimd_h2v1_fancy_upsample_mips_dspr2)
/*****************************************************************************/