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Fix vpx_plane_add_noise_msa functionality bit-mismatch

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Change-Id: I04961afb592ae6a67fdcfd8c9066e920dd4b30e7
This commit is contained in:
Kaustubh Raste 2016-10-03 15:44:17 +05:30 committed by Johann Koenig
parent 7eff8f3b1d
commit 6922fc8230
2 changed files with 14 additions and 19 deletions
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1
AUTHORS
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@ -75,6 +75,7 @@ Joshua Litt <joshualitt@google.com>
Julia Robson <juliamrobson@gmail.com>
Justin Clift <justin@salasaga.org>
Justin Lebar <justin.lebar@gmail.com>
Kaustubh Raste <kaustubh.raste@imgtec.com>
KO Myung-Hun <komh@chollian.net>
Lawrence Velázquez <larryv@macports.org>
Linfeng Zhang <linfengz@google.com>

32
vpx_dsp/mips/add_noise_msa.c
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@ -15,6 +15,13 @@ void vpx_plane_add_noise_msa(uint8_t *start_ptr, const int8_t *noise,
int blackclamp, int whiteclamp, int width,
int height, int32_t pitch) {
int i, j;
v16u8 pos0, pos1, ref0, ref1;
v16i8 black_clamp, white_clamp, both_clamp;
black_clamp = __msa_fill_b(blackclamp);
white_clamp = __msa_fill_b(whiteclamp);
both_clamp = black_clamp + white_clamp;
both_clamp = -both_clamp;
for (i = 0; i < height / 2; ++i) {
uint8_t *pos0_ptr = start_ptr + (2 * i) * pitch;
@ -22,29 +29,16 @@ void vpx_plane_add_noise_msa(uint8_t *start_ptr, const int8_t *noise,
uint8_t *pos1_ptr = start_ptr + (2 * i + 1) * pitch;
const int8_t *ref1_ptr = noise + (rand() & 0xff);
for (j = width / 16; j--;) {
v16i8 temp00_s, temp01_s;
v16u8 temp00, temp01, black_clamp, white_clamp;
v16u8 pos0, ref0, pos1, ref1;
v16i8 const127 = __msa_ldi_b(127);
pos0 = LD_UB(pos0_ptr);
ref0 = LD_UB(ref0_ptr);
pos1 = LD_UB(pos1_ptr);
ref1 = LD_UB(ref1_ptr);
black_clamp = (v16u8)__msa_fill_b(blackclamp);
white_clamp = (v16u8)__msa_fill_b(whiteclamp);
temp00 = (pos0 < black_clamp);
pos0 = __msa_bmnz_v(pos0, black_clamp, temp00);
temp01 = (pos1 < black_clamp);
pos1 = __msa_bmnz_v(pos1, black_clamp, temp01);
XORI_B2_128_UB(pos0, pos1);
temp00_s = __msa_adds_s_b((v16i8)white_clamp, const127);
temp00 = (v16u8)(temp00_s < pos0);
pos0 = (v16u8)__msa_bmnz_v((v16u8)pos0, (v16u8)temp00_s, temp00);
temp01_s = __msa_adds_s_b((v16i8)white_clamp, const127);
temp01 = (temp01_s < pos1);
pos1 = (v16u8)__msa_bmnz_v((v16u8)pos1, (v16u8)temp01_s, temp01);
XORI_B2_128_UB(pos0, pos1);
pos0 = __msa_subsus_u_b(pos0, black_clamp);
pos1 = __msa_subsus_u_b(pos1, black_clamp);
pos0 = __msa_subsus_u_b(pos0, both_clamp);
pos1 = __msa_subsus_u_b(pos1, both_clamp);
pos0 = __msa_subsus_u_b(pos0, white_clamp);
pos1 = __msa_subsus_u_b(pos1, white_clamp);
pos0 += ref0;
ST_UB(pos0, pos0_ptr);
pos1 += ref1;