// 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 dsp functions // // Author(s): Prashant Patil (prashant.patil@imgtec.com) #include "./dsp.h" #if defined(WEBP_USE_MSA) #include "./msa_macro.h" //------------------------------------------------------------------------------ // Transforms #define IDCT_1D_W(in0, in1, in2, in3, out0, out1, out2, out3) { \ v4i32 a1_m, b1_m, c1_m, d1_m; \ v4i32 c_tmp1_m, c_tmp2_m, d_tmp1_m, d_tmp2_m; \ const v4i32 cospi8sqrt2minus1 = __msa_fill_w(20091); \ const v4i32 sinpi8sqrt2 = __msa_fill_w(35468); \ \ a1_m = in0 + in2; \ b1_m = in0 - in2; \ c_tmp1_m = (in1 * sinpi8sqrt2) >> 16; \ c_tmp2_m = in3 + ((in3 * cospi8sqrt2minus1) >> 16); \ c1_m = c_tmp1_m - c_tmp2_m; \ d_tmp1_m = in1 + ((in1 * cospi8sqrt2minus1) >> 16); \ d_tmp2_m = (in3 * sinpi8sqrt2) >> 16; \ d1_m = d_tmp1_m + d_tmp2_m; \ BUTTERFLY_4(a1_m, b1_m, c1_m, d1_m, out0, out1, out2, out3); \ } #define MULT1(a) ((((a) * 20091) >> 16) + (a)) #define MULT2(a) (((a) * 35468) >> 16) static void TransformOne(const int16_t* in, uint8_t* dst) { v8i16 input0, input1; v4i32 in0, in1, in2, in3, hz0, hz1, hz2, hz3, vt0, vt1, vt2, vt3; v4i32 res0, res1, res2, res3; const v16i8 zero = { 0 }; v16i8 dest0, dest1, dest2, dest3; LD_SH2(in, 8, input0, input1); UNPCK_SH_SW(input0, in0, in1); UNPCK_SH_SW(input1, in2, in3); IDCT_1D_W(in0, in1, in2, in3, hz0, hz1, hz2, hz3); TRANSPOSE4x4_SW_SW(hz0, hz1, hz2, hz3, hz0, hz1, hz2, hz3); IDCT_1D_W(hz0, hz1, hz2, hz3, vt0, vt1, vt2, vt3); SRARI_W4_SW(vt0, vt1, vt2, vt3, 3); TRANSPOSE4x4_SW_SW(vt0, vt1, vt2, vt3, vt0, vt1, vt2, vt3); LD_SB4(dst, BPS, dest0, dest1, dest2, dest3); ILVR_B4_SW(zero, dest0, zero, dest1, zero, dest2, zero, dest3, res0, res1, res2, res3); ILVR_H4_SW(zero, res0, zero, res1, zero, res2, zero, res3, res0, res1, res2, res3); ADD4(res0, vt0, res1, vt1, res2, vt2, res3, vt3, res0, res1, res2, res3); CLIP_SW4_0_255(res0, res1, res2, res3); PCKEV_B2_SW(res0, res1, res2, res3, vt0, vt1); res0 = (v4i32)__msa_pckev_b((v16i8)vt0, (v16i8)vt1); ST4x4_UB(res0, res0, 3, 2, 1, 0, dst, BPS); } static void TransformTwo(const int16_t* in, uint8_t* dst, int do_two) { TransformOne(in, dst); if (do_two) { TransformOne(in + 16, dst + 4); } } static void TransformWHT(const int16_t* in, int16_t* out) { v8i16 input0, input1; const v8i16 mask0 = { 0, 1, 2, 3, 8, 9, 10, 11 }; const v8i16 mask1 = { 4, 5, 6, 7, 12, 13, 14, 15 }; const v8i16 mask2 = { 0, 4, 8, 12, 1, 5, 9, 13 }; const v8i16 mask3 = { 3, 7, 11, 15, 2, 6, 10, 14 }; v8i16 tmp0, tmp1, tmp2, tmp3; v8i16 out0, out1; LD_SH2(in, 8, input0, input1); input1 = SLDI_SH(input1, input1, 8); tmp0 = input0 + input1; tmp1 = input0 - input1; VSHF_H2_SH(tmp0, tmp1, tmp0, tmp1, mask0, mask1, tmp2, tmp3); out0 = tmp2 + tmp3; out1 = tmp2 - tmp3; VSHF_H2_SH(out0, out1, out0, out1, mask2, mask3, input0, input1); tmp0 = input0 + input1; tmp1 = input0 - input1; VSHF_H2_SH(tmp0, tmp1, tmp0, tmp1, mask0, mask1, tmp2, tmp3); tmp0 = tmp2 + tmp3; tmp1 = tmp2 - tmp3; ADDVI_H2_SH(tmp0, 3, tmp1, 3, out0, out1); SRAI_H2_SH(out0, out1, 3); out[0] = __msa_copy_s_h(out0, 0); out[16] = __msa_copy_s_h(out0, 4); out[32] = __msa_copy_s_h(out1, 0); out[48] = __msa_copy_s_h(out1, 4); out[64] = __msa_copy_s_h(out0, 1); out[80] = __msa_copy_s_h(out0, 5); out[96] = __msa_copy_s_h(out1, 1); out[112] = __msa_copy_s_h(out1, 5); out[128] = __msa_copy_s_h(out0, 2); out[144] = __msa_copy_s_h(out0, 6); out[160] = __msa_copy_s_h(out1, 2); out[176] = __msa_copy_s_h(out1, 6); out[192] = __msa_copy_s_h(out0, 3); out[208] = __msa_copy_s_h(out0, 7); out[224] = __msa_copy_s_h(out1, 3); out[240] = __msa_copy_s_h(out1, 7); } static void TransformDC(const int16_t* in, uint8_t* dst) { const int DC = (in[0] + 4) >> 3; const v8i16 tmp0 = __msa_fill_h(DC); ADDBLK_ST4x4_UB(tmp0, tmp0, tmp0, tmp0, dst, BPS); } static void TransformAC3(const int16_t* in, uint8_t* dst) { const int a = in[0] + 4; const int c4 = MULT2(in[4]); const int d4 = MULT1(in[4]); const int in2 = MULT2(in[1]); const int in3 = MULT1(in[1]); v4i32 tmp0 = { 0 }; v4i32 out0 = __msa_fill_w(a + d4); v4i32 out1 = __msa_fill_w(a + c4); v4i32 out2 = __msa_fill_w(a - c4); v4i32 out3 = __msa_fill_w(a - d4); v4i32 res0, res1, res2, res3; const v4i32 zero = { 0 }; v16u8 dest0, dest1, dest2, dest3; INSERT_W4_SW(in3, in2, -in2, -in3, tmp0); ADD4(out0, tmp0, out1, tmp0, out2, tmp0, out3, tmp0, out0, out1, out2, out3); SRAI_W4_SW(out0, out1, out2, out3, 3); LD_UB4(dst, BPS, dest0, dest1, dest2, dest3); ILVR_B4_SW(zero, dest0, zero, dest1, zero, dest2, zero, dest3, res0, res1, res2, res3); ILVR_H4_SW(zero, res0, zero, res1, zero, res2, zero, res3, res0, res1, res2, res3); ADD4(res0, out0, res1, out1, res2, out2, res3, out3, res0, res1, res2, res3); CLIP_SW4_0_255(res0, res1, res2, res3); PCKEV_B2_SW(res0, res1, res2, res3, out0, out1); res0 = (v4i32)__msa_pckev_b((v16i8)out0, (v16i8)out1); ST4x4_UB(res0, res0, 3, 2, 1, 0, dst, BPS); } //------------------------------------------------------------------------------ // Entry point extern void VP8DspInitMSA(void); WEBP_TSAN_IGNORE_FUNCTION void VP8DspInitMSA(void) { VP8TransformWHT = TransformWHT; VP8Transform = TransformTwo; VP8TransformDC = TransformDC; VP8TransformAC3 = TransformAC3; } #else // !WEBP_USE_MSA WEBP_DSP_INIT_STUB(VP8DspInitMSA) #endif // WEBP_USE_MSA