356 lines
13 KiB
C
356 lines
13 KiB
C
// Copyright 2016 Google Inc. All Rights Reserved.
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//
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// Use of this source code is governed by a BSD-style license
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// that can be found in the COPYING file in the root of the source
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// tree. An additional intellectual property rights grant can be found
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// in the file PATENTS. All contributing project authors may
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// be found in the AUTHORS file in the root of the source tree.
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// -----------------------------------------------------------------------------
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//
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// MSA variant of methods for lossless decoder
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//
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// Author: Prashant Patil (prashant.patil@imgtec.com)
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#include "./dsp.h"
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#if defined(WEBP_USE_MSA)
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#include "./lossless.h"
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#include "./msa_macro.h"
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//------------------------------------------------------------------------------
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// Colorspace conversion functions
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#define CONVERT16_BGRA_XXX(psrc, pdst, m0, m1, m2) do { \
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v16u8 src0, src1, src2, src3, dst0, dst1, dst2; \
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LD_UB4(psrc, 16, src0, src1, src2, src3); \
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VSHF_B2_UB(src0, src1, src1, src2, m0, m1, dst0, dst1); \
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dst2 = VSHF_UB(src2, src3, m2); \
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ST_UB2(dst0, dst1, pdst, 16); \
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ST_UB(dst2, pdst + 32); \
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} while (0)
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#define CONVERT12_BGRA_XXX(psrc, pdst, m0, m1, m2) do { \
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uint32_t pix_w; \
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v16u8 src0, src1, src2, dst0, dst1, dst2; \
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LD_UB3(psrc, 16, src0, src1, src2); \
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VSHF_B2_UB(src0, src1, src1, src2, m0, m1, dst0, dst1); \
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dst2 = VSHF_UB(src2, src2, m2); \
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ST_UB2(dst0, dst1, pdst, 16); \
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pix_w = __msa_copy_s_w((v4i32)dst2, 0); \
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SW(pix_w, pdst + 32); \
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} while (0)
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#define CONVERT8_BGRA_XXX(psrc, pdst, m0, m1) do { \
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uint64_t pix_d; \
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v16u8 src0, src1, src2, dst0, dst1; \
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LD_UB2(psrc, 16, src0, src1); \
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VSHF_B2_UB(src0, src1, src1, src2, m0, m1, dst0, dst1); \
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ST_UB(dst0, pdst); \
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pix_d = __msa_copy_s_d((v2i64)dst1, 0); \
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SD(pix_d, pdst + 16); \
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} while (0)
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#define CONVERT4_BGRA_XXX(psrc, pdst, m) do { \
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const v16u8 src0 = LD_UB(psrc); \
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const v16u8 dst0 = VSHF_UB(src0, src0, m); \
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uint64_t pix_d = __msa_copy_s_d((v2i64)dst0, 0); \
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uint32_t pix_w = __msa_copy_s_w((v4i32)dst0, 2); \
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SD(pix_d, pdst + 0); \
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SW(pix_w, pdst + 8); \
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} while (0)
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#define CONVERT1_BGRA_BGR(psrc, pdst) do { \
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const int32_t b = (psrc)[0]; \
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const int32_t g = (psrc)[1]; \
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const int32_t r = (psrc)[2]; \
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(pdst)[0] = b; \
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(pdst)[1] = g; \
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(pdst)[2] = r; \
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} while (0)
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#define CONVERT1_BGRA_RGB(psrc, pdst) do { \
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const int32_t b = (psrc)[0]; \
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const int32_t g = (psrc)[1]; \
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const int32_t r = (psrc)[2]; \
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(pdst)[0] = r; \
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(pdst)[1] = g; \
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(pdst)[2] = b; \
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} while (0)
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#define TRANSFORM_COLOR_INVERSE_8(src0, src1, dst0, dst1, \
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c0, c1, mask0, mask1) do { \
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v8i16 g0, g1, t0, t1, t2, t3; \
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v4i32 t4, t5; \
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VSHF_B2_SH(src0, src0, src1, src1, mask0, mask0, g0, g1); \
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DOTP_SB2_SH(g0, g1, c0, c0, t0, t1); \
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SRAI_H2_SH(t0, t1, 5); \
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t0 = __msa_addv_h(t0, (v8i16)src0); \
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t1 = __msa_addv_h(t1, (v8i16)src1); \
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t4 = __msa_srli_w((v4i32)t0, 16); \
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t5 = __msa_srli_w((v4i32)t1, 16); \
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DOTP_SB2_SH(t4, t5, c1, c1, t2, t3); \
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SRAI_H2_SH(t2, t3, 5); \
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ADD2(t0, t2, t1, t3, t0, t1); \
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VSHF_B2_UB(src0, t0, src1, t1, mask1, mask1, dst0, dst1); \
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} while (0)
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#define TRANSFORM_COLOR_INVERSE_4(src, dst, c0, c1, mask0, mask1) do { \
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const v16i8 g0 = VSHF_SB(src, src, mask0); \
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v8i16 t0 = __msa_dotp_s_h(c0, g0); \
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v8i16 t1; \
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v4i32 t2; \
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t0 = SRAI_H(t0, 5); \
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t0 = __msa_addv_h(t0, (v8i16)src); \
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t2 = __msa_srli_w((v4i32)t0, 16); \
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t1 = __msa_dotp_s_h(c1, (v16i8)t2); \
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t1 = SRAI_H(t1, 5); \
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t0 = t0 + t1; \
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dst = VSHF_UB(src, t0, mask1); \
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} while (0)
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static void ConvertBGRAToRGBA(const uint32_t* src,
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int num_pixels, uint8_t* dst) {
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int i;
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const uint8_t* ptemp_src = (const uint8_t*)src;
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uint8_t* ptemp_dst = (uint8_t*)dst;
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v16u8 src0, dst0;
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const v16u8 mask = { 2, 1, 0, 3, 6, 5, 4, 7, 10, 9, 8, 11, 14, 13, 12, 15 };
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while (num_pixels >= 8) {
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v16u8 src1, dst1;
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LD_UB2(ptemp_src, 16, src0, src1);
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VSHF_B2_UB(src0, src0, src1, src1, mask, mask, dst0, dst1);
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ST_UB2(dst0, dst1, ptemp_dst, 16);
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ptemp_src += 32;
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ptemp_dst += 32;
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num_pixels -= 8;
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}
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if (num_pixels > 0) {
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if (num_pixels >= 4) {
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src0 = LD_UB(ptemp_src);
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dst0 = VSHF_UB(src0, src0, mask);
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ST_UB(dst0, ptemp_dst);
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ptemp_src += 16;
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ptemp_dst += 16;
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num_pixels -= 4;
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}
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for (i = 0; i < num_pixels; i++) {
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const uint8_t b = ptemp_src[2];
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const uint8_t g = ptemp_src[1];
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const uint8_t r = ptemp_src[0];
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const uint8_t a = ptemp_src[3];
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ptemp_dst[0] = b;
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ptemp_dst[1] = g;
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ptemp_dst[2] = r;
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ptemp_dst[3] = a;
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ptemp_src += 4;
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ptemp_dst += 4;
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}
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}
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}
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static void ConvertBGRAToBGR(const uint32_t* src,
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int num_pixels, uint8_t* dst) {
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const uint8_t* ptemp_src = (const uint8_t*)src;
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uint8_t* ptemp_dst = (uint8_t*)dst;
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const v16u8 mask0 = { 0, 1, 2, 4, 5, 6, 8, 9, 10, 12, 13, 14,
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16, 17, 18, 20 };
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const v16u8 mask1 = { 5, 6, 8, 9, 10, 12, 13, 14, 16, 17, 18, 20,
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21, 22, 24, 25 };
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const v16u8 mask2 = { 10, 12, 13, 14, 16, 17, 18, 20, 21, 22, 24, 25,
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26, 28, 29, 30 };
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while (num_pixels >= 16) {
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CONVERT16_BGRA_XXX(ptemp_src, ptemp_dst, mask0, mask1, mask2);
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ptemp_src += 64;
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ptemp_dst += 48;
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num_pixels -= 16;
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}
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if (num_pixels > 0) {
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if (num_pixels >= 12) {
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CONVERT12_BGRA_XXX(ptemp_src, ptemp_dst, mask0, mask1, mask2);
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ptemp_src += 48;
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ptemp_dst += 36;
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num_pixels -= 12;
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} else if (num_pixels >= 8) {
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CONVERT8_BGRA_XXX(ptemp_src, ptemp_dst, mask0, mask1);
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ptemp_src += 32;
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ptemp_dst += 24;
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num_pixels -= 8;
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} else if (num_pixels >= 4) {
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CONVERT4_BGRA_XXX(ptemp_src, ptemp_dst, mask0);
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ptemp_src += 16;
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ptemp_dst += 12;
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num_pixels -= 4;
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}
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if (num_pixels == 3) {
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CONVERT1_BGRA_BGR(ptemp_src + 0, ptemp_dst + 0);
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CONVERT1_BGRA_BGR(ptemp_src + 4, ptemp_dst + 3);
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CONVERT1_BGRA_BGR(ptemp_src + 8, ptemp_dst + 6);
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} else if (num_pixels == 2) {
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CONVERT1_BGRA_BGR(ptemp_src + 0, ptemp_dst + 0);
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CONVERT1_BGRA_BGR(ptemp_src + 4, ptemp_dst + 3);
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} else if (num_pixels == 1) {
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CONVERT1_BGRA_BGR(ptemp_src, ptemp_dst);
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}
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}
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}
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static void ConvertBGRAToRGB(const uint32_t* src,
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int num_pixels, uint8_t* dst) {
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const uint8_t* ptemp_src = (const uint8_t*)src;
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uint8_t* ptemp_dst = (uint8_t*)dst;
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const v16u8 mask0 = { 2, 1, 0, 6, 5, 4, 10, 9, 8, 14, 13, 12,
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18, 17, 16, 22 };
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const v16u8 mask1 = { 5, 4, 10, 9, 8, 14, 13, 12, 18, 17, 16, 22,
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21, 20, 26, 25 };
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const v16u8 mask2 = { 8, 14, 13, 12, 18, 17, 16, 22, 21, 20, 26, 25,
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24, 30, 29, 28 };
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while (num_pixels >= 16) {
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CONVERT16_BGRA_XXX(ptemp_src, ptemp_dst, mask0, mask1, mask2);
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ptemp_src += 64;
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ptemp_dst += 48;
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num_pixels -= 16;
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}
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if (num_pixels) {
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if (num_pixels >= 12) {
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CONVERT12_BGRA_XXX(ptemp_src, ptemp_dst, mask0, mask1, mask2);
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ptemp_src += 48;
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ptemp_dst += 36;
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num_pixels -= 12;
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} else if (num_pixels >= 8) {
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CONVERT8_BGRA_XXX(ptemp_src, ptemp_dst, mask0, mask1);
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ptemp_src += 32;
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ptemp_dst += 24;
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num_pixels -= 8;
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} else if (num_pixels >= 4) {
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CONVERT4_BGRA_XXX(ptemp_src, ptemp_dst, mask0);
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ptemp_src += 16;
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ptemp_dst += 12;
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num_pixels -= 4;
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}
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if (num_pixels == 3) {
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CONVERT1_BGRA_RGB(ptemp_src + 0, ptemp_dst + 0);
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CONVERT1_BGRA_RGB(ptemp_src + 4, ptemp_dst + 3);
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CONVERT1_BGRA_RGB(ptemp_src + 8, ptemp_dst + 6);
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} else if (num_pixels == 2) {
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CONVERT1_BGRA_RGB(ptemp_src + 0, ptemp_dst + 0);
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CONVERT1_BGRA_RGB(ptemp_src + 4, ptemp_dst + 3);
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} else if (num_pixels == 1) {
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CONVERT1_BGRA_RGB(ptemp_src, ptemp_dst);
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}
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}
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}
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static void AddGreenToBlueAndRed(const uint32_t* const src, int num_pixels,
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uint32_t* dst) {
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int i;
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const uint8_t* in = (const uint8_t*)src;
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uint8_t* out = (uint8_t*)dst;
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v16u8 src0, dst0, tmp0;
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const v16u8 mask = { 1, 255, 1, 255, 5, 255, 5, 255, 9, 255, 9, 255,
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13, 255, 13, 255 };
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while (num_pixels >= 8) {
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v16u8 src1, dst1, tmp1;
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LD_UB2(in, 16, src0, src1);
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VSHF_B2_UB(src0, src1, src1, src0, mask, mask, tmp0, tmp1);
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ADD2(src0, tmp0, src1, tmp1, dst0, dst1);
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ST_UB2(dst0, dst1, out, 16);
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in += 32;
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out += 32;
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num_pixels -= 8;
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}
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if (num_pixels > 0) {
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if (num_pixels >= 4) {
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src0 = LD_UB(in);
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tmp0 = VSHF_UB(src0, src0, mask);
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dst0 = src0 + tmp0;
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ST_UB(dst0, out);
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in += 16;
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out += 16;
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num_pixels -= 4;
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}
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for (i = 0; i < num_pixels; i++) {
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const uint8_t b = in[0];
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const uint8_t g = in[1];
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const uint8_t r = in[2];
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out[0] = (b + g) & 0xff;
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out[1] = g;
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out[2] = (r + g) & 0xff;
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out[4] = in[4];
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out += 4;
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}
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}
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}
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static void TransformColorInverse(const VP8LMultipliers* const m,
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const uint32_t* src, int num_pixels,
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uint32_t* dst) {
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v16u8 src0, dst0;
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const v16i8 g2br = (v16i8)__msa_fill_w(m->green_to_blue_ |
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(m->green_to_red_ << 16));
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const v16i8 r2b = (v16i8)__msa_fill_w(m->red_to_blue_);
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const v16u8 mask0 = { 1, 255, 1, 255, 5, 255, 5, 255, 9, 255, 9, 255,
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13, 255, 13, 255 };
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const v16u8 mask1 = { 16, 1, 18, 3, 20, 5, 22, 7, 24, 9, 26, 11,
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28, 13, 30, 15 };
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while (num_pixels >= 8) {
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v16u8 src1, dst1;
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LD_UB2(src, 4, src0, src1);
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TRANSFORM_COLOR_INVERSE_8(src0, src1, dst0, dst1, g2br, r2b, mask0, mask1);
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ST_UB2(dst0, dst1, dst, 4);
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src += 8;
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dst += 8;
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num_pixels -= 8;
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}
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if (num_pixels > 0) {
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if (num_pixels >= 4) {
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src0 = LD_UB(src);
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TRANSFORM_COLOR_INVERSE_4(src0, dst0, g2br, r2b, mask0, mask1);
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ST_UB(dst0, dst);
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src += 4;
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dst += 4;
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num_pixels -= 4;
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}
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if (num_pixels > 0) {
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src0 = LD_UB(src);
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TRANSFORM_COLOR_INVERSE_4(src0, dst0, g2br, r2b, mask0, mask1);
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if (num_pixels == 3) {
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const uint64_t pix_d = __msa_copy_s_d((v2i64)dst0, 0);
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const uint32_t pix_w = __msa_copy_s_w((v4i32)dst0, 2);
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SD(pix_d, dst + 0);
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SW(pix_w, dst + 2);
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} else if (num_pixels == 2) {
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const uint64_t pix_d = __msa_copy_s_d((v2i64)dst0, 0);
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SD(pix_d, dst);
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} else {
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const uint32_t pix_w = __msa_copy_s_w((v4i32)dst0, 0);
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SW(pix_w, dst);
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}
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}
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}
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}
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//------------------------------------------------------------------------------
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// Entry point
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extern void VP8LDspInitMSA(void);
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WEBP_TSAN_IGNORE_FUNCTION void VP8LDspInitMSA(void) {
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VP8LConvertBGRAToRGBA = ConvertBGRAToRGBA;
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VP8LConvertBGRAToBGR = ConvertBGRAToBGR;
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VP8LConvertBGRAToRGB = ConvertBGRAToRGB;
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VP8LAddGreenToBlueAndRed = AddGreenToBlueAndRed;
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VP8LTransformColorInverse = TransformColorInverse;
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}
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#else // !WEBP_USE_MSA
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WEBP_DSP_INIT_STUB(VP8LDspInitMSA)
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#endif // WEBP_USE_MSA
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