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Add MSA optimized color transform functions

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We add the following MSA optimized color transform functions:
- AddGreenToBlueAndRed
- TransformColorInverse

Change-Id: Iceab3813905955aa8b811253df9188512fc7de3f
This commit is contained in:
Parag Salasakar 2016-06-28 20:36:21 +05:30
parent 55b2fede7f
commit 429120d0af
2 changed files with 132 additions and 1 deletions
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115
src/dsp/lossless_msa.c
View File

@ -78,6 +78,37 @@
(pdst)[2] = b; \
} while (0)
#define TRANSFORM_COLOR_INVERSE_8(src0, src1, dst0, dst1, \
c0, c1, mask0, mask1) do { \
v8i16 g0, g1, t0, t1, t2, t3; \
v4i32 t4, t5; \
VSHF_B2_SH(src0, src0, src1, src1, mask0, mask0, g0, g1); \
DOTP_SB2_SH(g0, g1, c0, c0, t0, t1); \
SRAI_H2_SH(t0, t1, 5); \
t0 = __msa_addv_h(t0, (v8i16)src0); \
t1 = __msa_addv_h(t1, (v8i16)src1); \
t4 = __msa_srli_w((v4i32)t0, 16); \
t5 = __msa_srli_w((v4i32)t1, 16); \
DOTP_SB2_SH(t4, t5, c1, c1, t2, t3); \
SRAI_H2_SH(t2, t3, 5); \
ADD2(t0, t2, t1, t3, t0, t1); \
VSHF_B2_UB(src0, t0, src1, t1, mask1, mask1, dst0, dst1); \
} while (0)
#define TRANSFORM_COLOR_INVERSE_4(src, dst, c0, c1, mask0, mask1) do { \
const v16i8 g0 = VSHF_SB(src, src, mask0); \
v8i16 t0 = __msa_dotp_s_h(c0, g0); \
v8i16 t1; \
v4i32 t2; \
t0 = SRAI_H(t0, 5); \
t0 = __msa_addv_h(t0, (v8i16)src); \
t2 = __msa_srli_w((v4i32)t0, 16); \
t1 = __msa_dotp_s_h(c1, (v16i8)t2); \
t1 = SRAI_H(t1, 5); \
t0 = t0 + t1; \
dst = VSHF_UB(src, t0, mask1); \
} while (0)
static void ConvertBGRAToRGBA(const uint32_t* src,
int num_pixels, uint8_t* dst) {
int i;
@ -213,6 +244,88 @@ static void ConvertBGRAToRGB(const uint32_t* src,
}
}
static void AddGreenToBlueAndRed(uint32_t* data, int num_pixels) {
int i;
uint8_t* ptemp_data = (uint8_t*)data;
v16u8 src0, dst0, tmp0;
const v16u8 mask = { 1, 255, 1, 255, 5, 255, 5, 255, 9, 255, 9, 255,
13, 255, 13, 255 };
while (num_pixels >= 8) {
v16u8 src1, dst1, tmp1;
LD_UB2(ptemp_data, 16, src0, src1);
VSHF_B2_UB(src0, src1, src1, src0, mask, mask, tmp0, tmp1);
ADD2(src0, tmp0, src1, tmp1, dst0, dst1);
ST_UB2(dst0, dst1, ptemp_data, 16);
ptemp_data += 32;
num_pixels -= 8;
}
if (num_pixels > 0) {
if (num_pixels >= 4) {
src0 = LD_UB(ptemp_data);
tmp0 = VSHF_UB(src0, src0, mask);
dst0 = src0 + tmp0;
ST_UB(dst0, ptemp_data);
ptemp_data += 16;
num_pixels -= 4;
}
for (i = 0; i < num_pixels; i++) {
const uint8_t b = ptemp_data[0];
const uint8_t g = ptemp_data[1];
const uint8_t r = ptemp_data[2];
ptemp_data[0] = (b + g) & 0xff;
ptemp_data[2] = (r + g) & 0xff;
ptemp_data += 4;
}
}
}
static void TransformColorInverse(const VP8LMultipliers* const m,
uint32_t* data, int num_pixels) {
v16u8 src0, dst0;
const v16i8 g2br = (v16i8)__msa_fill_w(m->green_to_blue_ |
(m->green_to_red_ << 16));
const v16i8 r2b = (v16i8)__msa_fill_w(m->red_to_blue_);
const v16u8 mask0 = { 1, 255, 1, 255, 5, 255, 5, 255, 9, 255, 9, 255,
13, 255, 13, 255 };
const v16u8 mask1 = { 16, 1, 18, 3, 20, 5, 22, 7, 24, 9, 26, 11,
28, 13, 30, 15 };
while (num_pixels >= 8) {
v16u8 src1, dst1;
LD_UB2(data, 4, src0, src1);
TRANSFORM_COLOR_INVERSE_8(src0, src1, dst0, dst1, g2br, r2b, mask0, mask1);
ST_UB2(dst0, dst1, data, 4);
data += 8;
num_pixels -= 8;
}
if (num_pixels > 0) {
if (num_pixels >= 4) {
src0 = LD_UB(data);
TRANSFORM_COLOR_INVERSE_4(src0, dst0, g2br, r2b, mask0, mask1);
ST_UB(dst0, data);
data += 4;
num_pixels -= 4;
}
if (num_pixels > 0) {
src0 = LD_UB(data);
TRANSFORM_COLOR_INVERSE_4(src0, dst0, g2br, r2b, mask0, mask1);
if (num_pixels == 3) {
const uint64_t pix_d = __msa_copy_s_d((v2i64)dst0, 0);
const uint32_t pix_w = __msa_copy_s_w((v4i32)dst0, 2);
SD(pix_d, data + 0);
SW(pix_w, data + 2);
} else if (num_pixels == 2) {
const uint64_t pix_d = __msa_copy_s_d((v2i64)dst0, 0);
SD(pix_d, data);
} else {
const uint32_t pix_w = __msa_copy_s_w((v4i32)dst0, 0);
SW(pix_w, data);
}
}
}
}
//------------------------------------------------------------------------------
// Entry point
@ -222,6 +335,8 @@ WEBP_TSAN_IGNORE_FUNCTION void VP8LDspInitMSA(void) {
VP8LConvertBGRAToRGBA = ConvertBGRAToRGBA;
VP8LConvertBGRAToBGR = ConvertBGRAToBGR;
VP8LConvertBGRAToRGB = ConvertBGRAToRGB;
VP8LAddGreenToBlueAndRed = AddGreenToBlueAndRed;
VP8LTransformColorInverse = TransformColorInverse;
}
#else // !WEBP_USE_MSA

16
src/dsp/msa_macro.h
View File

@ -361,6 +361,22 @@
#define VSHF_H2_UH(...) VSHF_H2(v8u16, __VA_ARGS__)
#define VSHF_H2_SH(...) VSHF_H2(v8i16, __VA_ARGS__)
/* Description : Dot product of byte vector elements
* Arguments : Inputs - mult0, mult1, cnst0, cnst1
* Outputs - out0, out1
* Return Type - as per RTYPE
* Details : Signed byte elements from 'mult0' are multiplied with
* signed byte elements from 'cnst0' producing a result
* twice the size of input i.e. signed halfword.
* The multiplication result of adjacent odd-even elements
* are added together and written to the 'out0' vector
*/
#define DOTP_SB2(RTYPE, mult0, mult1, cnst0, cnst1, out0, out1) do { \
out0 = (RTYPE)__msa_dotp_s_h((v16i8)mult0, (v16i8)cnst0); \
out1 = (RTYPE)__msa_dotp_s_h((v16i8)mult1, (v16i8)cnst1); \
} while (0)
#define DOTP_SB2_SH(...) DOTP_SB2(v8i16, __VA_ARGS__)
/* Description : Clips all signed halfword elements of input vector
* between 0 & 255
* Arguments : Input/output - val