generic-library/vpx
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Fix mips dspr2 idct16x16 functions for large coefficient input

Browse Source 
Change-Id: I9be3d3d040837f658c6314606e28db8c31092a1a
This commit is contained in:
Kaustubh Raste
2017-01-09 16:35:28 +05:30
parent c7e2bd6298
commit c06991fce6
1 changed files with 41 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

41
vpx_dsp/mips/itrans16_dspr2.c
View File

@@ -983,6 +983,47 @@ void vpx_idct16x16_1_add_dspr2(const int16_t *input, uint8_t *dest,
[dest] "+&r"(dest) [dest] "+&r"(dest)
: [stride] "r"(stride), [vector_a1] "r"(vector_a1)); : [stride] "r"(stride), [vector_a1] "r"(vector_a1));
} }
} else if (a1 > 255) {
int32_t a11, a12, vector_a11, vector_a12;
/* use quad-byte
* input and output memory are four byte aligned */
a11 = a1 >> 1;
a12 = a1 - a11;
__asm__ __volatile__(
"replv.qb %[vector_a11], %[a11] \n\t"
"replv.qb %[vector_a12], %[a12] \n\t"
: [vector_a11] "=&r"(vector_a11), [vector_a12] "=&r"(vector_a12)
: [a11] "r"(a11), [a12] "r"(a12));
for (r = 16; r--;) {
__asm__ __volatile__(
"lw %[t1], 0(%[dest]) \n\t"
"lw %[t2], 4(%[dest]) \n\t"
"lw %[t3], 8(%[dest]) \n\t"
"lw %[t4], 12(%[dest]) \n\t"
"addu_s.qb %[vector_1], %[t1], %[vector_a11] \n\t"
"addu_s.qb %[vector_2], %[t2], %[vector_a11] \n\t"
"addu_s.qb %[vector_3], %[t3], %[vector_a11] \n\t"
"addu_s.qb %[vector_4], %[t4], %[vector_a11] \n\t"
"addu_s.qb %[vector_1], %[vector_1], %[vector_a12] \n\t"
"addu_s.qb %[vector_2], %[vector_2], %[vector_a12] \n\t"
"addu_s.qb %[vector_3], %[vector_3], %[vector_a12] \n\t"
"addu_s.qb %[vector_4], %[vector_4], %[vector_a12] \n\t"
"sw %[vector_1], 0(%[dest]) \n\t"
"sw %[vector_2], 4(%[dest]) \n\t"
"sw %[vector_3], 8(%[dest]) \n\t"
"sw %[vector_4], 12(%[dest]) \n\t"
"add %[dest], %[dest], %[stride] \n\t"
: [t1] "=&r"(t1), [t2] "=&r"(t2), [t3] "=&r"(t3), [t4] "=&r"(t4),
[vector_1] "=&r"(vector_1), [vector_2] "=&r"(vector_2),
[vector_3] "=&r"(vector_3), [vector_4] "=&r"(vector_4),
[dest] "+&r"(dest)
: [stride] "r"(stride), [vector_a11] "r"(vector_a11),
[vector_a12] "r"(vector_a12));
}
} else { } else {
/* use quad-byte /* use quad-byte
* input and output memory are four byte aligned */ * input and output memory are four byte aligned */