| // Copyright 2016 Google Inc. All Rights Reserved. |
| // |
| // Use of this source code is governed by a BSD-style license |
| // that can be found in the COPYING file in the root of the source |
| // tree. An additional intellectual property rights grant can be found |
| // in the file PATENTS. All contributing project authors may |
| // be found in the AUTHORS file in the root of the source tree. |
| // ----------------------------------------------------------------------------- |
| // |
| // MSA version of rescaling functions |
| // |
| // Author: Prashant Patil (prashant.patil@imgtec.com) |
| |
| #include "src/dsp/dsp.h" |
| |
| #if defined(WEBP_USE_MSA) && !defined(WEBP_REDUCE_SIZE) |
| |
| #include <assert.h> |
| |
| #include "src/utils/rescaler_utils.h" |
| #include "src/dsp/msa_macro.h" |
| |
| #define ROUNDER (WEBP_RESCALER_ONE >> 1) |
| #define MULT_FIX(x, y) (((uint64_t)(x) * (y) + ROUNDER) >> WEBP_RESCALER_RFIX) |
| #define MULT_FIX_FLOOR(x, y) (((uint64_t)(x) * (y)) >> WEBP_RESCALER_RFIX) |
| |
| #define CALC_MULT_FIX_16(in0, in1, in2, in3, scale, shift, dst) do { \ |
| v4u32 tmp0, tmp1, tmp2, tmp3; \ |
| v16u8 t0, t1, t2, t3, t4, t5; \ |
| v2u64 out0, out1, out2, out3; \ |
| ILVRL_W2_UW(zero, in0, tmp0, tmp1); \ |
| ILVRL_W2_UW(zero, in1, tmp2, tmp3); \ |
| DOTP_UW2_UD(tmp0, tmp1, scale, scale, out0, out1); \ |
| DOTP_UW2_UD(tmp2, tmp3, scale, scale, out2, out3); \ |
| SRAR_D4_UD(out0, out1, out2, out3, shift); \ |
| PCKEV_B2_UB(out1, out0, out3, out2, t0, t1); \ |
| ILVRL_W2_UW(zero, in2, tmp0, tmp1); \ |
| ILVRL_W2_UW(zero, in3, tmp2, tmp3); \ |
| DOTP_UW2_UD(tmp0, tmp1, scale, scale, out0, out1); \ |
| DOTP_UW2_UD(tmp2, tmp3, scale, scale, out2, out3); \ |
| SRAR_D4_UD(out0, out1, out2, out3, shift); \ |
| PCKEV_B2_UB(out1, out0, out3, out2, t2, t3); \ |
| PCKEV_B2_UB(t1, t0, t3, t2, t4, t5); \ |
| dst = (v16u8)__msa_pckev_b((v16i8)t5, (v16i8)t4); \ |
| } while (0) |
| |
| #define CALC_MULT_FIX_4(in0, scale, shift, dst) do { \ |
| v4u32 tmp0, tmp1; \ |
| v16i8 t0, t1; \ |
| v2u64 out0, out1; \ |
| ILVRL_W2_UW(zero, in0, tmp0, tmp1); \ |
| DOTP_UW2_UD(tmp0, tmp1, scale, scale, out0, out1); \ |
| SRAR_D2_UD(out0, out1, shift); \ |
| t0 = __msa_pckev_b((v16i8)out1, (v16i8)out0); \ |
| t1 = __msa_pckev_b(t0, t0); \ |
| t0 = __msa_pckev_b(t1, t1); \ |
| dst = __msa_copy_s_w((v4i32)t0, 0); \ |
| } while (0) |
| |
| #define CALC_MULT_FIX1_16(in0, in1, in2, in3, fyscale, shift, \ |
| dst0, dst1, dst2, dst3) do { \ |
| v4u32 tmp0, tmp1, tmp2, tmp3; \ |
| v2u64 out0, out1, out2, out3; \ |
| ILVRL_W2_UW(zero, in0, tmp0, tmp1); \ |
| ILVRL_W2_UW(zero, in1, tmp2, tmp3); \ |
| DOTP_UW2_UD(tmp0, tmp1, fyscale, fyscale, out0, out1); \ |
| DOTP_UW2_UD(tmp2, tmp3, fyscale, fyscale, out2, out3); \ |
| SRAR_D4_UD(out0, out1, out2, out3, shift); \ |
| PCKEV_W2_UW(out1, out0, out3, out2, dst0, dst1); \ |
| ILVRL_W2_UW(zero, in2, tmp0, tmp1); \ |
| ILVRL_W2_UW(zero, in3, tmp2, tmp3); \ |
| DOTP_UW2_UD(tmp0, tmp1, fyscale, fyscale, out0, out1); \ |
| DOTP_UW2_UD(tmp2, tmp3, fyscale, fyscale, out2, out3); \ |
| SRAR_D4_UD(out0, out1, out2, out3, shift); \ |
| PCKEV_W2_UW(out1, out0, out3, out2, dst2, dst3); \ |
| } while (0) |
| |
| #define CALC_MULT_FIX1_4(in0, scale, shift, dst) do { \ |
| v4u32 tmp0, tmp1; \ |
| v2u64 out0, out1; \ |
| ILVRL_W2_UW(zero, in0, tmp0, tmp1); \ |
| DOTP_UW2_UD(tmp0, tmp1, scale, scale, out0, out1); \ |
| SRAR_D2_UD(out0, out1, shift); \ |
| dst = (v4u32)__msa_pckev_w((v4i32)out1, (v4i32)out0); \ |
| } while (0) |
| |
| #define CALC_MULT_FIX2_16(in0, in1, in2, in3, mult, scale, shift, \ |
| dst0, dst1) do { \ |
| v4u32 tmp0, tmp1, tmp2, tmp3; \ |
| v2u64 out0, out1, out2, out3; \ |
| ILVRL_W2_UW(in0, in2, tmp0, tmp1); \ |
| ILVRL_W2_UW(in1, in3, tmp2, tmp3); \ |
| DOTP_UW2_UD(tmp0, tmp1, mult, mult, out0, out1); \ |
| DOTP_UW2_UD(tmp2, tmp3, mult, mult, out2, out3); \ |
| SRAR_D4_UD(out0, out1, out2, out3, shift); \ |
| DOTP_UW2_UD(out0, out1, scale, scale, out0, out1); \ |
| DOTP_UW2_UD(out2, out3, scale, scale, out2, out3); \ |
| SRAR_D4_UD(out0, out1, out2, out3, shift); \ |
| PCKEV_B2_UB(out1, out0, out3, out2, dst0, dst1); \ |
| } while (0) |
| |
| #define CALC_MULT_FIX2_4(in0, in1, mult, scale, shift, dst) do { \ |
| v4u32 tmp0, tmp1; \ |
| v2u64 out0, out1; \ |
| v16i8 t0, t1; \ |
| ILVRL_W2_UW(in0, in1, tmp0, tmp1); \ |
| DOTP_UW2_UD(tmp0, tmp1, mult, mult, out0, out1); \ |
| SRAR_D2_UD(out0, out1, shift); \ |
| DOTP_UW2_UD(out0, out1, scale, scale, out0, out1); \ |
| SRAR_D2_UD(out0, out1, shift); \ |
| t0 = __msa_pckev_b((v16i8)out1, (v16i8)out0); \ |
| t1 = __msa_pckev_b(t0, t0); \ |
| t0 = __msa_pckev_b(t1, t1); \ |
| dst = __msa_copy_s_w((v4i32)t0, 0); \ |
| } while (0) |
| |
| static WEBP_INLINE void ExportRowExpand_0(const uint32_t* frow, uint8_t* dst, |
| int length, |
| WebPRescaler* const wrk) { |
| const v4u32 scale = (v4u32)__msa_fill_w(wrk->fy_scale); |
| const v4u32 shift = (v4u32)__msa_fill_w(WEBP_RESCALER_RFIX); |
| const v4i32 zero = { 0 }; |
| |
| while (length >= 16) { |
| v4u32 src0, src1, src2, src3; |
| v16u8 out; |
| LD_UW4(frow, 4, src0, src1, src2, src3); |
| CALC_MULT_FIX_16(src0, src1, src2, src3, scale, shift, out); |
| ST_UB(out, dst); |
| length -= 16; |
| frow += 16; |
| dst += 16; |
| } |
| if (length > 0) { |
| int x_out; |
| if (length >= 12) { |
| uint32_t val0_m, val1_m, val2_m; |
| v4u32 src0, src1, src2; |
| LD_UW3(frow, 4, src0, src1, src2); |
| CALC_MULT_FIX_4(src0, scale, shift, val0_m); |
| CALC_MULT_FIX_4(src1, scale, shift, val1_m); |
| CALC_MULT_FIX_4(src2, scale, shift, val2_m); |
| SW3(val0_m, val1_m, val2_m, dst, 4); |
| length -= 12; |
| frow += 12; |
| dst += 12; |
| } else if (length >= 8) { |
| uint32_t val0_m, val1_m; |
| v4u32 src0, src1; |
| LD_UW2(frow, 4, src0, src1); |
| CALC_MULT_FIX_4(src0, scale, shift, val0_m); |
| CALC_MULT_FIX_4(src1, scale, shift, val1_m); |
| SW2(val0_m, val1_m, dst, 4); |
| length -= 8; |
| frow += 8; |
| dst += 8; |
| } else if (length >= 4) { |
| uint32_t val0_m; |
| const v4u32 src0 = LD_UW(frow); |
| CALC_MULT_FIX_4(src0, scale, shift, val0_m); |
| SW(val0_m, dst); |
| length -= 4; |
| frow += 4; |
| dst += 4; |
| } |
| for (x_out = 0; x_out < length; ++x_out) { |
| const uint32_t J = frow[x_out]; |
| const int v = (int)MULT_FIX(J, wrk->fy_scale); |
| dst[x_out] = (v > 255) ? 255u : (uint8_t)v; |
| } |
| } |
| } |
| |
| static WEBP_INLINE void ExportRowExpand_1(const uint32_t* frow, uint32_t* irow, |
| uint8_t* dst, int length, |
| WebPRescaler* const wrk) { |
| const uint32_t B = WEBP_RESCALER_FRAC(-wrk->y_accum, wrk->y_sub); |
| const uint32_t A = (uint32_t)(WEBP_RESCALER_ONE - B); |
| const v4i32 B1 = __msa_fill_w(B); |
| const v4i32 A1 = __msa_fill_w(A); |
| const v4i32 AB = __msa_ilvr_w(A1, B1); |
| const v4u32 scale = (v4u32)__msa_fill_w(wrk->fy_scale); |
| const v4u32 shift = (v4u32)__msa_fill_w(WEBP_RESCALER_RFIX); |
| |
| while (length >= 16) { |
| v4u32 frow0, frow1, frow2, frow3, irow0, irow1, irow2, irow3; |
| v16u8 t0, t1, t2, t3, t4, t5; |
| LD_UW4(frow, 4, frow0, frow1, frow2, frow3); |
| LD_UW4(irow, 4, irow0, irow1, irow2, irow3); |
| CALC_MULT_FIX2_16(frow0, frow1, irow0, irow1, AB, scale, shift, t0, t1); |
| CALC_MULT_FIX2_16(frow2, frow3, irow2, irow3, AB, scale, shift, t2, t3); |
| PCKEV_B2_UB(t1, t0, t3, t2, t4, t5); |
| t0 = (v16u8)__msa_pckev_b((v16i8)t5, (v16i8)t4); |
| ST_UB(t0, dst); |
| frow += 16; |
| irow += 16; |
| dst += 16; |
| length -= 16; |
| } |
| if (length > 0) { |
| int x_out; |
| if (length >= 12) { |
| uint32_t val0_m, val1_m, val2_m; |
| v4u32 frow0, frow1, frow2, irow0, irow1, irow2; |
| LD_UW3(frow, 4, frow0, frow1, frow2); |
| LD_UW3(irow, 4, irow0, irow1, irow2); |
| CALC_MULT_FIX2_4(frow0, irow0, AB, scale, shift, val0_m); |
| CALC_MULT_FIX2_4(frow1, irow1, AB, scale, shift, val1_m); |
| CALC_MULT_FIX2_4(frow2, irow2, AB, scale, shift, val2_m); |
| SW3(val0_m, val1_m, val2_m, dst, 4); |
| frow += 12; |
| irow += 12; |
| dst += 12; |
| length -= 12; |
| } else if (length >= 8) { |
| uint32_t val0_m, val1_m; |
| v4u32 frow0, frow1, irow0, irow1; |
| LD_UW2(frow, 4, frow0, frow1); |
| LD_UW2(irow, 4, irow0, irow1); |
| CALC_MULT_FIX2_4(frow0, irow0, AB, scale, shift, val0_m); |
| CALC_MULT_FIX2_4(frow1, irow1, AB, scale, shift, val1_m); |
| SW2(val0_m, val1_m, dst, 4); |
| frow += 4; |
| irow += 4; |
| dst += 4; |
| length -= 4; |
| } else if (length >= 4) { |
| uint32_t val0_m; |
| const v4u32 frow0 = LD_UW(frow + 0); |
| const v4u32 irow0 = LD_UW(irow + 0); |
| CALC_MULT_FIX2_4(frow0, irow0, AB, scale, shift, val0_m); |
| SW(val0_m, dst); |
| frow += 4; |
| irow += 4; |
| dst += 4; |
| length -= 4; |
| } |
| for (x_out = 0; x_out < length; ++x_out) { |
| const uint64_t I = (uint64_t)A * frow[x_out] |
| + (uint64_t)B * irow[x_out]; |
| const uint32_t J = (uint32_t)((I + ROUNDER) >> WEBP_RESCALER_RFIX); |
| const int v = (int)MULT_FIX(J, wrk->fy_scale); |
| dst[x_out] = (v > 255) ? 255u : (uint8_t)v; |
| } |
| } |
| } |
| |
| static void RescalerExportRowExpand_MIPSdspR2(WebPRescaler* const wrk) { |
| uint8_t* dst = wrk->dst; |
| rescaler_t* irow = wrk->irow; |
| const int x_out_max = wrk->dst_width * wrk->num_channels; |
| const rescaler_t* frow = wrk->frow; |
| assert(!WebPRescalerOutputDone(wrk)); |
| assert(wrk->y_accum <= 0); |
| assert(wrk->y_expand); |
| assert(wrk->y_sub != 0); |
| if (wrk->y_accum == 0) { |
| ExportRowExpand_0(frow, dst, x_out_max, wrk); |
| } else { |
| ExportRowExpand_1(frow, irow, dst, x_out_max, wrk); |
| } |
| } |
| |
| #if 0 // disabled for now. TODO(skal): make match the C-code |
| static WEBP_INLINE void ExportRowShrink_0(const uint32_t* frow, uint32_t* irow, |
| uint8_t* dst, int length, |
| const uint32_t yscale, |
| WebPRescaler* const wrk) { |
| const v4u32 y_scale = (v4u32)__msa_fill_w(yscale); |
| const v4u32 fxyscale = (v4u32)__msa_fill_w(wrk->fxy_scale); |
| const v4u32 shiftval = (v4u32)__msa_fill_w(WEBP_RESCALER_RFIX); |
| const v4i32 zero = { 0 }; |
| |
| while (length >= 16) { |
| v4u32 src0, src1, src2, src3, frac0, frac1, frac2, frac3; |
| v16u8 out; |
| LD_UW4(frow, 4, src0, src1, src2, src3); |
| CALC_MULT_FIX1_16(src0, src1, src2, src3, y_scale, shiftval, |
| frac0, frac1, frac2, frac3); |
| LD_UW4(irow, 4, src0, src1, src2, src3); |
| SUB4(src0, frac0, src1, frac1, src2, frac2, src3, frac3, |
| src0, src1, src2, src3); |
| CALC_MULT_FIX_16(src0, src1, src2, src3, fxyscale, shiftval, out); |
| ST_UB(out, dst); |
| ST_UW4(frac0, frac1, frac2, frac3, irow, 4); |
| frow += 16; |
| irow += 16; |
| dst += 16; |
| length -= 16; |
| } |
| if (length > 0) { |
| int x_out; |
| if (length >= 12) { |
| uint32_t val0_m, val1_m, val2_m; |
| v4u32 src0, src1, src2, frac0, frac1, frac2; |
| LD_UW3(frow, 4, src0, src1, src2); |
| CALC_MULT_FIX1_4(src0, y_scale, shiftval, frac0); |
| CALC_MULT_FIX1_4(src1, y_scale, shiftval, frac1); |
| CALC_MULT_FIX1_4(src2, y_scale, shiftval, frac2); |
| LD_UW3(irow, 4, src0, src1, src2); |
| SUB3(src0, frac0, src1, frac1, src2, frac2, src0, src1, src2); |
| CALC_MULT_FIX_4(src0, fxyscale, shiftval, val0_m); |
| CALC_MULT_FIX_4(src1, fxyscale, shiftval, val1_m); |
| CALC_MULT_FIX_4(src2, fxyscale, shiftval, val2_m); |
| SW3(val0_m, val1_m, val2_m, dst, 4); |
| ST_UW3(frac0, frac1, frac2, irow, 4); |
| frow += 12; |
| irow += 12; |
| dst += 12; |
| length -= 12; |
| } else if (length >= 8) { |
| uint32_t val0_m, val1_m; |
| v4u32 src0, src1, frac0, frac1; |
| LD_UW2(frow, 4, src0, src1); |
| CALC_MULT_FIX1_4(src0, y_scale, shiftval, frac0); |
| CALC_MULT_FIX1_4(src1, y_scale, shiftval, frac1); |
| LD_UW2(irow, 4, src0, src1); |
| SUB2(src0, frac0, src1, frac1, src0, src1); |
| CALC_MULT_FIX_4(src0, fxyscale, shiftval, val0_m); |
| CALC_MULT_FIX_4(src1, fxyscale, shiftval, val1_m); |
| SW2(val0_m, val1_m, dst, 4); |
| ST_UW2(frac0, frac1, irow, 4); |
| frow += 8; |
| irow += 8; |
| dst += 8; |
| length -= 8; |
| } else if (length >= 4) { |
| uint32_t val0_m; |
| v4u32 frac0; |
| v4u32 src0 = LD_UW(frow); |
| CALC_MULT_FIX1_4(src0, y_scale, shiftval, frac0); |
| src0 = LD_UW(irow); |
| src0 = src0 - frac0; |
| CALC_MULT_FIX_4(src0, fxyscale, shiftval, val0_m); |
| SW(val0_m, dst); |
| ST_UW(frac0, irow); |
| frow += 4; |
| irow += 4; |
| dst += 4; |
| length -= 4; |
| } |
| for (x_out = 0; x_out < length; ++x_out) { |
| const uint32_t frac = (uint32_t)MULT_FIX_FLOOR(frow[x_out], yscale); |
| const int v = (int)MULT_FIX(irow[x_out] - frac, wrk->fxy_scale); |
| dst[x_out] = (v > 255) ? 255u : (uint8_t)v; |
| irow[x_out] = frac; |
| } |
| } |
| } |
| |
| static WEBP_INLINE void ExportRowShrink_1(uint32_t* irow, uint8_t* dst, |
| int length, |
| WebPRescaler* const wrk) { |
| const v4u32 scale = (v4u32)__msa_fill_w(wrk->fxy_scale); |
| const v4u32 shift = (v4u32)__msa_fill_w(WEBP_RESCALER_RFIX); |
| const v4i32 zero = { 0 }; |
| |
| while (length >= 16) { |
| v4u32 src0, src1, src2, src3; |
| v16u8 dst0; |
| LD_UW4(irow, 4, src0, src1, src2, src3); |
| CALC_MULT_FIX_16(src0, src1, src2, src3, scale, shift, dst0); |
| ST_UB(dst0, dst); |
| ST_SW4(zero, zero, zero, zero, irow, 4); |
| length -= 16; |
| irow += 16; |
| dst += 16; |
| } |
| if (length > 0) { |
| int x_out; |
| if (length >= 12) { |
| uint32_t val0_m, val1_m, val2_m; |
| v4u32 src0, src1, src2; |
| LD_UW3(irow, 4, src0, src1, src2); |
| CALC_MULT_FIX_4(src0, scale, shift, val0_m); |
| CALC_MULT_FIX_4(src1, scale, shift, val1_m); |
| CALC_MULT_FIX_4(src2, scale, shift, val2_m); |
| SW3(val0_m, val1_m, val2_m, dst, 4); |
| ST_SW3(zero, zero, zero, irow, 4); |
| length -= 12; |
| irow += 12; |
| dst += 12; |
| } else if (length >= 8) { |
| uint32_t val0_m, val1_m; |
| v4u32 src0, src1; |
| LD_UW2(irow, 4, src0, src1); |
| CALC_MULT_FIX_4(src0, scale, shift, val0_m); |
| CALC_MULT_FIX_4(src1, scale, shift, val1_m); |
| SW2(val0_m, val1_m, dst, 4); |
| ST_SW2(zero, zero, irow, 4); |
| length -= 8; |
| irow += 8; |
| dst += 8; |
| } else if (length >= 4) { |
| uint32_t val0_m; |
| const v4u32 src0 = LD_UW(irow + 0); |
| CALC_MULT_FIX_4(src0, scale, shift, val0_m); |
| SW(val0_m, dst); |
| ST_SW(zero, irow); |
| length -= 4; |
| irow += 4; |
| dst += 4; |
| } |
| for (x_out = 0; x_out < length; ++x_out) { |
| const int v = (int)MULT_FIX(irow[x_out], wrk->fxy_scale); |
| dst[x_out] = (v > 255) ? 255u : (uint8_t)v; |
| irow[x_out] = 0; |
| } |
| } |
| } |
| |
| static void RescalerExportRowShrink_MIPSdspR2(WebPRescaler* const wrk) { |
| uint8_t* dst = wrk->dst; |
| rescaler_t* irow = wrk->irow; |
| const int x_out_max = wrk->dst_width * wrk->num_channels; |
| const rescaler_t* frow = wrk->frow; |
| const uint32_t yscale = wrk->fy_scale * (-wrk->y_accum); |
| assert(!WebPRescalerOutputDone(wrk)); |
| assert(wrk->y_accum <= 0); |
| assert(!wrk->y_expand); |
| if (yscale) { |
| ExportRowShrink_0(frow, irow, dst, x_out_max, yscale, wrk); |
| } else { |
| ExportRowShrink_1(irow, dst, x_out_max, wrk); |
| } |
| } |
| #endif // 0 |
| |
| //------------------------------------------------------------------------------ |
| // Entry point |
| |
| extern void WebPRescalerDspInitMSA(void); |
| |
| WEBP_TSAN_IGNORE_FUNCTION void WebPRescalerDspInitMSA(void) { |
| WebPRescalerExportRowExpand = RescalerExportRowExpand_MIPSdspR2; |
| // WebPRescalerExportRowShrink = RescalerExportRowShrink_MIPSdspR2; |
| } |
| |
| #else // !WEBP_USE_MSA |
| |
| WEBP_DSP_INIT_STUB(WebPRescalerDspInitMSA) |
| |
| #endif // WEBP_USE_MSA |
