| // Copyright 2014 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. |
| // ----------------------------------------------------------------------------- |
| // |
| // YUV->RGB conversion functions |
| // |
| // Author: Skal (pascal.massimino@gmail.com) |
| |
| #include "src/dsp/yuv.h" |
| |
| #if defined(WEBP_USE_SSE41) |
| |
| #include "src/dsp/common_sse41.h" |
| #include <stdlib.h> |
| #include <smmintrin.h> |
| |
| //----------------------------------------------------------------------------- |
| // Convert spans of 32 pixels to various RGB formats for the fancy upsampler. |
| |
| // These constants are 14b fixed-point version of ITU-R BT.601 constants. |
| // R = (19077 * y + 26149 * v - 14234) >> 6 |
| // G = (19077 * y - 6419 * u - 13320 * v + 8708) >> 6 |
| // B = (19077 * y + 33050 * u - 17685) >> 6 |
| static void ConvertYUV444ToRGB_SSE41(const __m128i* const Y0, |
| const __m128i* const U0, |
| const __m128i* const V0, |
| __m128i* const R, |
| __m128i* const G, |
| __m128i* const B) { |
| const __m128i k19077 = _mm_set1_epi16(19077); |
| const __m128i k26149 = _mm_set1_epi16(26149); |
| const __m128i k14234 = _mm_set1_epi16(14234); |
| // 33050 doesn't fit in a signed short: only use this with unsigned arithmetic |
| const __m128i k33050 = _mm_set1_epi16((short)33050); |
| const __m128i k17685 = _mm_set1_epi16(17685); |
| const __m128i k6419 = _mm_set1_epi16(6419); |
| const __m128i k13320 = _mm_set1_epi16(13320); |
| const __m128i k8708 = _mm_set1_epi16(8708); |
| |
| const __m128i Y1 = _mm_mulhi_epu16(*Y0, k19077); |
| |
| const __m128i R0 = _mm_mulhi_epu16(*V0, k26149); |
| const __m128i R1 = _mm_sub_epi16(Y1, k14234); |
| const __m128i R2 = _mm_add_epi16(R1, R0); |
| |
| const __m128i G0 = _mm_mulhi_epu16(*U0, k6419); |
| const __m128i G1 = _mm_mulhi_epu16(*V0, k13320); |
| const __m128i G2 = _mm_add_epi16(Y1, k8708); |
| const __m128i G3 = _mm_add_epi16(G0, G1); |
| const __m128i G4 = _mm_sub_epi16(G2, G3); |
| |
| // be careful with the saturated *unsigned* arithmetic here! |
| const __m128i B0 = _mm_mulhi_epu16(*U0, k33050); |
| const __m128i B1 = _mm_adds_epu16(B0, Y1); |
| const __m128i B2 = _mm_subs_epu16(B1, k17685); |
| |
| // use logical shift for B2, which can be larger than 32767 |
| *R = _mm_srai_epi16(R2, 6); // range: [-14234, 30815] |
| *G = _mm_srai_epi16(G4, 6); // range: [-10953, 27710] |
| *B = _mm_srli_epi16(B2, 6); // range: [0, 34238] |
| } |
| |
| // Load the bytes into the *upper* part of 16b words. That's "<< 8", basically. |
| static WEBP_INLINE __m128i Load_HI_16_SSE41(const uint8_t* src) { |
| const __m128i zero = _mm_setzero_si128(); |
| return _mm_unpacklo_epi8(zero, _mm_loadl_epi64((const __m128i*)src)); |
| } |
| |
| // Load and replicate the U/V samples |
| static WEBP_INLINE __m128i Load_UV_HI_8_SSE41(const uint8_t* src) { |
| const __m128i zero = _mm_setzero_si128(); |
| const __m128i tmp0 = _mm_cvtsi32_si128(*(const uint32_t*)src); |
| const __m128i tmp1 = _mm_unpacklo_epi8(zero, tmp0); |
| return _mm_unpacklo_epi16(tmp1, tmp1); // replicate samples |
| } |
| |
| // Convert 32 samples of YUV444 to R/G/B |
| static void YUV444ToRGB_SSE41(const uint8_t* const y, |
| const uint8_t* const u, |
| const uint8_t* const v, |
| __m128i* const R, __m128i* const G, |
| __m128i* const B) { |
| const __m128i Y0 = Load_HI_16_SSE41(y), U0 = Load_HI_16_SSE41(u), |
| V0 = Load_HI_16_SSE41(v); |
| ConvertYUV444ToRGB_SSE41(&Y0, &U0, &V0, R, G, B); |
| } |
| |
| // Convert 32 samples of YUV420 to R/G/B |
| static void YUV420ToRGB_SSE41(const uint8_t* const y, |
| const uint8_t* const u, |
| const uint8_t* const v, |
| __m128i* const R, __m128i* const G, |
| __m128i* const B) { |
| const __m128i Y0 = Load_HI_16_SSE41(y), U0 = Load_UV_HI_8_SSE41(u), |
| V0 = Load_UV_HI_8_SSE41(v); |
| ConvertYUV444ToRGB_SSE41(&Y0, &U0, &V0, R, G, B); |
| } |
| |
| // Pack the planar buffers |
| // rrrr... rrrr... gggg... gggg... bbbb... bbbb.... |
| // triplet by triplet in the output buffer rgb as rgbrgbrgbrgb ... |
| static WEBP_INLINE void PlanarTo24b_SSE41( |
| __m128i* const in0, __m128i* const in1, __m128i* const in2, |
| __m128i* const in3, __m128i* const in4, __m128i* const in5, |
| uint8_t* const rgb) { |
| // The input is 6 registers of sixteen 8b but for the sake of explanation, |
| // let's take 6 registers of four 8b values. |
| // To pack, we will keep taking one every two 8b integer and move it |
| // around as follows: |
| // Input: |
| // r0r1r2r3 | r4r5r6r7 | g0g1g2g3 | g4g5g6g7 | b0b1b2b3 | b4b5b6b7 |
| // Split the 6 registers in two sets of 3 registers: the first set as the even |
| // 8b bytes, the second the odd ones: |
| // r0r2r4r6 | g0g2g4g6 | b0b2b4b6 | r1r3r5r7 | g1g3g5g7 | b1b3b5b7 |
| // Repeat the same permutations twice more: |
| // r0r4g0g4 | b0b4r1r5 | g1g5b1b5 | r2r6g2g6 | b2b6r3r7 | g3g7b3b7 |
| // r0g0b0r1 | g1b1r2g2 | b2r3g3b3 | r4g4b4r5 | g5b5r6g6 | b6r7g7b7 |
| VP8PlanarTo24b_SSE41(in0, in1, in2, in3, in4, in5); |
| |
| _mm_storeu_si128((__m128i*)(rgb + 0), *in0); |
| _mm_storeu_si128((__m128i*)(rgb + 16), *in1); |
| _mm_storeu_si128((__m128i*)(rgb + 32), *in2); |
| _mm_storeu_si128((__m128i*)(rgb + 48), *in3); |
| _mm_storeu_si128((__m128i*)(rgb + 64), *in4); |
| _mm_storeu_si128((__m128i*)(rgb + 80), *in5); |
| } |
| |
| void VP8YuvToRgb32_SSE41(const uint8_t* y, const uint8_t* u, const uint8_t* v, |
| uint8_t* dst) { |
| __m128i R0, R1, R2, R3, G0, G1, G2, G3, B0, B1, B2, B3; |
| __m128i rgb0, rgb1, rgb2, rgb3, rgb4, rgb5; |
| |
| YUV444ToRGB_SSE41(y + 0, u + 0, v + 0, &R0, &G0, &B0); |
| YUV444ToRGB_SSE41(y + 8, u + 8, v + 8, &R1, &G1, &B1); |
| YUV444ToRGB_SSE41(y + 16, u + 16, v + 16, &R2, &G2, &B2); |
| YUV444ToRGB_SSE41(y + 24, u + 24, v + 24, &R3, &G3, &B3); |
| |
| // Cast to 8b and store as RRRRGGGGBBBB. |
| rgb0 = _mm_packus_epi16(R0, R1); |
| rgb1 = _mm_packus_epi16(R2, R3); |
| rgb2 = _mm_packus_epi16(G0, G1); |
| rgb3 = _mm_packus_epi16(G2, G3); |
| rgb4 = _mm_packus_epi16(B0, B1); |
| rgb5 = _mm_packus_epi16(B2, B3); |
| |
| // Pack as RGBRGBRGBRGB. |
| PlanarTo24b_SSE41(&rgb0, &rgb1, &rgb2, &rgb3, &rgb4, &rgb5, dst); |
| } |
| |
| void VP8YuvToBgr32_SSE41(const uint8_t* y, const uint8_t* u, const uint8_t* v, |
| uint8_t* dst) { |
| __m128i R0, R1, R2, R3, G0, G1, G2, G3, B0, B1, B2, B3; |
| __m128i bgr0, bgr1, bgr2, bgr3, bgr4, bgr5; |
| |
| YUV444ToRGB_SSE41(y + 0, u + 0, v + 0, &R0, &G0, &B0); |
| YUV444ToRGB_SSE41(y + 8, u + 8, v + 8, &R1, &G1, &B1); |
| YUV444ToRGB_SSE41(y + 16, u + 16, v + 16, &R2, &G2, &B2); |
| YUV444ToRGB_SSE41(y + 24, u + 24, v + 24, &R3, &G3, &B3); |
| |
| // Cast to 8b and store as BBBBGGGGRRRR. |
| bgr0 = _mm_packus_epi16(B0, B1); |
| bgr1 = _mm_packus_epi16(B2, B3); |
| bgr2 = _mm_packus_epi16(G0, G1); |
| bgr3 = _mm_packus_epi16(G2, G3); |
| bgr4 = _mm_packus_epi16(R0, R1); |
| bgr5= _mm_packus_epi16(R2, R3); |
| |
| // Pack as BGRBGRBGRBGR. |
| PlanarTo24b_SSE41(&bgr0, &bgr1, &bgr2, &bgr3, &bgr4, &bgr5, dst); |
| } |
| |
| //----------------------------------------------------------------------------- |
| // Arbitrary-length row conversion functions |
| |
| static void YuvToRgbRow_SSE41(const uint8_t* y, |
| const uint8_t* u, const uint8_t* v, |
| uint8_t* dst, int len) { |
| int n; |
| for (n = 0; n + 32 <= len; n += 32, dst += 32 * 3) { |
| __m128i R0, R1, R2, R3, G0, G1, G2, G3, B0, B1, B2, B3; |
| __m128i rgb0, rgb1, rgb2, rgb3, rgb4, rgb5; |
| |
| YUV420ToRGB_SSE41(y + 0, u + 0, v + 0, &R0, &G0, &B0); |
| YUV420ToRGB_SSE41(y + 8, u + 4, v + 4, &R1, &G1, &B1); |
| YUV420ToRGB_SSE41(y + 16, u + 8, v + 8, &R2, &G2, &B2); |
| YUV420ToRGB_SSE41(y + 24, u + 12, v + 12, &R3, &G3, &B3); |
| |
| // Cast to 8b and store as RRRRGGGGBBBB. |
| rgb0 = _mm_packus_epi16(R0, R1); |
| rgb1 = _mm_packus_epi16(R2, R3); |
| rgb2 = _mm_packus_epi16(G0, G1); |
| rgb3 = _mm_packus_epi16(G2, G3); |
| rgb4 = _mm_packus_epi16(B0, B1); |
| rgb5 = _mm_packus_epi16(B2, B3); |
| |
| // Pack as RGBRGBRGBRGB. |
| PlanarTo24b_SSE41(&rgb0, &rgb1, &rgb2, &rgb3, &rgb4, &rgb5, dst); |
| |
| y += 32; |
| u += 16; |
| v += 16; |
| } |
| for (; n < len; ++n) { // Finish off |
| VP8YuvToRgb(y[0], u[0], v[0], dst); |
| dst += 3; |
| y += 1; |
| u += (n & 1); |
| v += (n & 1); |
| } |
| } |
| |
| static void YuvToBgrRow_SSE41(const uint8_t* y, |
| const uint8_t* u, const uint8_t* v, |
| uint8_t* dst, int len) { |
| int n; |
| for (n = 0; n + 32 <= len; n += 32, dst += 32 * 3) { |
| __m128i R0, R1, R2, R3, G0, G1, G2, G3, B0, B1, B2, B3; |
| __m128i bgr0, bgr1, bgr2, bgr3, bgr4, bgr5; |
| |
| YUV420ToRGB_SSE41(y + 0, u + 0, v + 0, &R0, &G0, &B0); |
| YUV420ToRGB_SSE41(y + 8, u + 4, v + 4, &R1, &G1, &B1); |
| YUV420ToRGB_SSE41(y + 16, u + 8, v + 8, &R2, &G2, &B2); |
| YUV420ToRGB_SSE41(y + 24, u + 12, v + 12, &R3, &G3, &B3); |
| |
| // Cast to 8b and store as BBBBGGGGRRRR. |
| bgr0 = _mm_packus_epi16(B0, B1); |
| bgr1 = _mm_packus_epi16(B2, B3); |
| bgr2 = _mm_packus_epi16(G0, G1); |
| bgr3 = _mm_packus_epi16(G2, G3); |
| bgr4 = _mm_packus_epi16(R0, R1); |
| bgr5 = _mm_packus_epi16(R2, R3); |
| |
| // Pack as BGRBGRBGRBGR. |
| PlanarTo24b_SSE41(&bgr0, &bgr1, &bgr2, &bgr3, &bgr4, &bgr5, dst); |
| |
| y += 32; |
| u += 16; |
| v += 16; |
| } |
| for (; n < len; ++n) { // Finish off |
| VP8YuvToBgr(y[0], u[0], v[0], dst); |
| dst += 3; |
| y += 1; |
| u += (n & 1); |
| v += (n & 1); |
| } |
| } |
| |
| //------------------------------------------------------------------------------ |
| // Entry point |
| |
| extern void WebPInitSamplersSSE41(void); |
| |
| WEBP_TSAN_IGNORE_FUNCTION void WebPInitSamplersSSE41(void) { |
| WebPSamplers[MODE_RGB] = YuvToRgbRow_SSE41; |
| WebPSamplers[MODE_BGR] = YuvToBgrRow_SSE41; |
| } |
| |
| //------------------------------------------------------------------------------ |
| // RGB24/32 -> YUV converters |
| |
| // Load eight 16b-words from *src. |
| #define LOAD_16(src) _mm_loadu_si128((const __m128i*)(src)) |
| // Store either 16b-words into *dst |
| #define STORE_16(V, dst) _mm_storeu_si128((__m128i*)(dst), (V)) |
| |
| #define WEBP_SSE41_SHUFF(OUT) do { \ |
| const __m128i tmp0 = _mm_shuffle_epi8(A0, shuff0); \ |
| const __m128i tmp1 = _mm_shuffle_epi8(A1, shuff1); \ |
| const __m128i tmp2 = _mm_shuffle_epi8(A2, shuff2); \ |
| const __m128i tmp3 = _mm_shuffle_epi8(A3, shuff0); \ |
| const __m128i tmp4 = _mm_shuffle_epi8(A4, shuff1); \ |
| const __m128i tmp5 = _mm_shuffle_epi8(A5, shuff2); \ |
| \ |
| /* OR everything to get one channel */ \ |
| const __m128i tmp6 = _mm_or_si128(tmp0, tmp1); \ |
| const __m128i tmp7 = _mm_or_si128(tmp3, tmp4); \ |
| out[OUT + 0] = _mm_or_si128(tmp6, tmp2); \ |
| out[OUT + 1] = _mm_or_si128(tmp7, tmp5); \ |
| } while (0); |
| |
| // Unpack the 8b input rgbrgbrgbrgb ... as contiguous registers: |
| // rrrr... rrrr... gggg... gggg... bbbb... bbbb.... |
| // Similar to PlanarTo24bHelper(), but in reverse order. |
| static WEBP_INLINE void RGB24PackedToPlanar_SSE41( |
| const uint8_t* const rgb, __m128i* const out /*out[6]*/) { |
| const __m128i A0 = _mm_loadu_si128((const __m128i*)(rgb + 0)); |
| const __m128i A1 = _mm_loadu_si128((const __m128i*)(rgb + 16)); |
| const __m128i A2 = _mm_loadu_si128((const __m128i*)(rgb + 32)); |
| const __m128i A3 = _mm_loadu_si128((const __m128i*)(rgb + 48)); |
| const __m128i A4 = _mm_loadu_si128((const __m128i*)(rgb + 64)); |
| const __m128i A5 = _mm_loadu_si128((const __m128i*)(rgb + 80)); |
| |
| // Compute RR. |
| { |
| const __m128i shuff0 = _mm_set_epi8( |
| -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 15, 12, 9, 6, 3, 0); |
| const __m128i shuff1 = _mm_set_epi8( |
| -1, -1, -1, -1, -1, 14, 11, 8, 5, 2, -1, -1, -1, -1, -1, -1); |
| const __m128i shuff2 = _mm_set_epi8( |
| 13, 10, 7, 4, 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1); |
| WEBP_SSE41_SHUFF(0) |
| } |
| // Compute GG. |
| { |
| const __m128i shuff0 = _mm_set_epi8( |
| -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 13, 10, 7, 4, 1); |
| const __m128i shuff1 = _mm_set_epi8( |
| -1, -1, -1, -1, -1, 15, 12, 9, 6, 3, 0, -1, -1, -1, -1, -1); |
| const __m128i shuff2 = _mm_set_epi8( |
| 14, 11, 8, 5, 2, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1); |
| WEBP_SSE41_SHUFF(2) |
| } |
| // Compute BB. |
| { |
| const __m128i shuff0 = _mm_set_epi8( |
| -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 14, 11, 8, 5, 2); |
| const __m128i shuff1 = _mm_set_epi8( |
| -1, -1, -1, -1, -1, -1, 13, 10, 7, 4, 1, -1, -1, -1, -1, -1); |
| const __m128i shuff2 = _mm_set_epi8( |
| 15, 12, 9, 6, 3, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1); |
| WEBP_SSE41_SHUFF(4) |
| } |
| } |
| |
| #undef WEBP_SSE41_SHUFF |
| |
| // Convert 8 packed ARGB to r[], g[], b[] |
| static WEBP_INLINE void RGB32PackedToPlanar_SSE41( |
| const uint32_t* const argb, __m128i* const rgb /*in[6]*/) { |
| const __m128i zero = _mm_setzero_si128(); |
| __m128i a0 = LOAD_16(argb + 0); |
| __m128i a1 = LOAD_16(argb + 4); |
| __m128i a2 = LOAD_16(argb + 8); |
| __m128i a3 = LOAD_16(argb + 12); |
| VP8L32bToPlanar_SSE41(&a0, &a1, &a2, &a3); |
| rgb[0] = _mm_unpacklo_epi8(a1, zero); |
| rgb[1] = _mm_unpackhi_epi8(a1, zero); |
| rgb[2] = _mm_unpacklo_epi8(a2, zero); |
| rgb[3] = _mm_unpackhi_epi8(a2, zero); |
| rgb[4] = _mm_unpacklo_epi8(a3, zero); |
| rgb[5] = _mm_unpackhi_epi8(a3, zero); |
| } |
| |
| // This macro computes (RG * MULT_RG + GB * MULT_GB + ROUNDER) >> DESCALE_FIX |
| // It's a macro and not a function because we need to use immediate values with |
| // srai_epi32, e.g. |
| #define TRANSFORM(RG_LO, RG_HI, GB_LO, GB_HI, MULT_RG, MULT_GB, \ |
| ROUNDER, DESCALE_FIX, OUT) do { \ |
| const __m128i V0_lo = _mm_madd_epi16(RG_LO, MULT_RG); \ |
| const __m128i V0_hi = _mm_madd_epi16(RG_HI, MULT_RG); \ |
| const __m128i V1_lo = _mm_madd_epi16(GB_LO, MULT_GB); \ |
| const __m128i V1_hi = _mm_madd_epi16(GB_HI, MULT_GB); \ |
| const __m128i V2_lo = _mm_add_epi32(V0_lo, V1_lo); \ |
| const __m128i V2_hi = _mm_add_epi32(V0_hi, V1_hi); \ |
| const __m128i V3_lo = _mm_add_epi32(V2_lo, ROUNDER); \ |
| const __m128i V3_hi = _mm_add_epi32(V2_hi, ROUNDER); \ |
| const __m128i V5_lo = _mm_srai_epi32(V3_lo, DESCALE_FIX); \ |
| const __m128i V5_hi = _mm_srai_epi32(V3_hi, DESCALE_FIX); \ |
| (OUT) = _mm_packs_epi32(V5_lo, V5_hi); \ |
| } while (0) |
| |
| #define MK_CST_16(A, B) _mm_set_epi16((B), (A), (B), (A), (B), (A), (B), (A)) |
| static WEBP_INLINE void ConvertRGBToY_SSE41(const __m128i* const R, |
| const __m128i* const G, |
| const __m128i* const B, |
| __m128i* const Y) { |
| const __m128i kRG_y = MK_CST_16(16839, 33059 - 16384); |
| const __m128i kGB_y = MK_CST_16(16384, 6420); |
| const __m128i kHALF_Y = _mm_set1_epi32((16 << YUV_FIX) + YUV_HALF); |
| |
| const __m128i RG_lo = _mm_unpacklo_epi16(*R, *G); |
| const __m128i RG_hi = _mm_unpackhi_epi16(*R, *G); |
| const __m128i GB_lo = _mm_unpacklo_epi16(*G, *B); |
| const __m128i GB_hi = _mm_unpackhi_epi16(*G, *B); |
| TRANSFORM(RG_lo, RG_hi, GB_lo, GB_hi, kRG_y, kGB_y, kHALF_Y, YUV_FIX, *Y); |
| } |
| |
| static WEBP_INLINE void ConvertRGBToUV_SSE41(const __m128i* const R, |
| const __m128i* const G, |
| const __m128i* const B, |
| __m128i* const U, |
| __m128i* const V) { |
| const __m128i kRG_u = MK_CST_16(-9719, -19081); |
| const __m128i kGB_u = MK_CST_16(0, 28800); |
| const __m128i kRG_v = MK_CST_16(28800, 0); |
| const __m128i kGB_v = MK_CST_16(-24116, -4684); |
| const __m128i kHALF_UV = _mm_set1_epi32(((128 << YUV_FIX) + YUV_HALF) << 2); |
| |
| const __m128i RG_lo = _mm_unpacklo_epi16(*R, *G); |
| const __m128i RG_hi = _mm_unpackhi_epi16(*R, *G); |
| const __m128i GB_lo = _mm_unpacklo_epi16(*G, *B); |
| const __m128i GB_hi = _mm_unpackhi_epi16(*G, *B); |
| TRANSFORM(RG_lo, RG_hi, GB_lo, GB_hi, kRG_u, kGB_u, |
| kHALF_UV, YUV_FIX + 2, *U); |
| TRANSFORM(RG_lo, RG_hi, GB_lo, GB_hi, kRG_v, kGB_v, |
| kHALF_UV, YUV_FIX + 2, *V); |
| } |
| |
| #undef MK_CST_16 |
| #undef TRANSFORM |
| |
| static void ConvertRGB24ToY_SSE41(const uint8_t* rgb, uint8_t* y, int width) { |
| const int max_width = width & ~31; |
| int i; |
| for (i = 0; i < max_width; rgb += 3 * 16 * 2) { |
| __m128i rgb_plane[6]; |
| int j; |
| |
| RGB24PackedToPlanar_SSE41(rgb, rgb_plane); |
| |
| for (j = 0; j < 2; ++j, i += 16) { |
| const __m128i zero = _mm_setzero_si128(); |
| __m128i r, g, b, Y0, Y1; |
| |
| // Convert to 16-bit Y. |
| r = _mm_unpacklo_epi8(rgb_plane[0 + j], zero); |
| g = _mm_unpacklo_epi8(rgb_plane[2 + j], zero); |
| b = _mm_unpacklo_epi8(rgb_plane[4 + j], zero); |
| ConvertRGBToY_SSE41(&r, &g, &b, &Y0); |
| |
| // Convert to 16-bit Y. |
| r = _mm_unpackhi_epi8(rgb_plane[0 + j], zero); |
| g = _mm_unpackhi_epi8(rgb_plane[2 + j], zero); |
| b = _mm_unpackhi_epi8(rgb_plane[4 + j], zero); |
| ConvertRGBToY_SSE41(&r, &g, &b, &Y1); |
| |
| // Cast to 8-bit and store. |
| STORE_16(_mm_packus_epi16(Y0, Y1), y + i); |
| } |
| } |
| for (; i < width; ++i, rgb += 3) { // left-over |
| y[i] = VP8RGBToY(rgb[0], rgb[1], rgb[2], YUV_HALF); |
| } |
| } |
| |
| static void ConvertBGR24ToY_SSE41(const uint8_t* bgr, uint8_t* y, int width) { |
| const int max_width = width & ~31; |
| int i; |
| for (i = 0; i < max_width; bgr += 3 * 16 * 2) { |
| __m128i bgr_plane[6]; |
| int j; |
| |
| RGB24PackedToPlanar_SSE41(bgr, bgr_plane); |
| |
| for (j = 0; j < 2; ++j, i += 16) { |
| const __m128i zero = _mm_setzero_si128(); |
| __m128i r, g, b, Y0, Y1; |
| |
| // Convert to 16-bit Y. |
| b = _mm_unpacklo_epi8(bgr_plane[0 + j], zero); |
| g = _mm_unpacklo_epi8(bgr_plane[2 + j], zero); |
| r = _mm_unpacklo_epi8(bgr_plane[4 + j], zero); |
| ConvertRGBToY_SSE41(&r, &g, &b, &Y0); |
| |
| // Convert to 16-bit Y. |
| b = _mm_unpackhi_epi8(bgr_plane[0 + j], zero); |
| g = _mm_unpackhi_epi8(bgr_plane[2 + j], zero); |
| r = _mm_unpackhi_epi8(bgr_plane[4 + j], zero); |
| ConvertRGBToY_SSE41(&r, &g, &b, &Y1); |
| |
| // Cast to 8-bit and store. |
| STORE_16(_mm_packus_epi16(Y0, Y1), y + i); |
| } |
| } |
| for (; i < width; ++i, bgr += 3) { // left-over |
| y[i] = VP8RGBToY(bgr[2], bgr[1], bgr[0], YUV_HALF); |
| } |
| } |
| |
| static void ConvertARGBToY_SSE41(const uint32_t* argb, uint8_t* y, int width) { |
| const int max_width = width & ~15; |
| int i; |
| for (i = 0; i < max_width; i += 16) { |
| __m128i Y0, Y1, rgb[6]; |
| RGB32PackedToPlanar_SSE41(&argb[i], rgb); |
| ConvertRGBToY_SSE41(&rgb[0], &rgb[2], &rgb[4], &Y0); |
| ConvertRGBToY_SSE41(&rgb[1], &rgb[3], &rgb[5], &Y1); |
| STORE_16(_mm_packus_epi16(Y0, Y1), y + i); |
| } |
| for (; i < width; ++i) { // left-over |
| const uint32_t p = argb[i]; |
| y[i] = VP8RGBToY((p >> 16) & 0xff, (p >> 8) & 0xff, (p >> 0) & 0xff, |
| YUV_HALF); |
| } |
| } |
| |
| // Horizontal add (doubled) of two 16b values, result is 16b. |
| // in: A | B | C | D | ... -> out: 2*(A+B) | 2*(C+D) | ... |
| static void HorizontalAddPack_SSE41(const __m128i* const A, |
| const __m128i* const B, |
| __m128i* const out) { |
| const __m128i k2 = _mm_set1_epi16(2); |
| const __m128i C = _mm_madd_epi16(*A, k2); |
| const __m128i D = _mm_madd_epi16(*B, k2); |
| *out = _mm_packs_epi32(C, D); |
| } |
| |
| static void ConvertARGBToUV_SSE41(const uint32_t* argb, |
| uint8_t* u, uint8_t* v, |
| int src_width, int do_store) { |
| const int max_width = src_width & ~31; |
| int i; |
| for (i = 0; i < max_width; i += 32, u += 16, v += 16) { |
| __m128i rgb[6], U0, V0, U1, V1; |
| RGB32PackedToPlanar_SSE41(&argb[i], rgb); |
| HorizontalAddPack_SSE41(&rgb[0], &rgb[1], &rgb[0]); |
| HorizontalAddPack_SSE41(&rgb[2], &rgb[3], &rgb[2]); |
| HorizontalAddPack_SSE41(&rgb[4], &rgb[5], &rgb[4]); |
| ConvertRGBToUV_SSE41(&rgb[0], &rgb[2], &rgb[4], &U0, &V0); |
| |
| RGB32PackedToPlanar_SSE41(&argb[i + 16], rgb); |
| HorizontalAddPack_SSE41(&rgb[0], &rgb[1], &rgb[0]); |
| HorizontalAddPack_SSE41(&rgb[2], &rgb[3], &rgb[2]); |
| HorizontalAddPack_SSE41(&rgb[4], &rgb[5], &rgb[4]); |
| ConvertRGBToUV_SSE41(&rgb[0], &rgb[2], &rgb[4], &U1, &V1); |
| |
| U0 = _mm_packus_epi16(U0, U1); |
| V0 = _mm_packus_epi16(V0, V1); |
| if (!do_store) { |
| const __m128i prev_u = LOAD_16(u); |
| const __m128i prev_v = LOAD_16(v); |
| U0 = _mm_avg_epu8(U0, prev_u); |
| V0 = _mm_avg_epu8(V0, prev_v); |
| } |
| STORE_16(U0, u); |
| STORE_16(V0, v); |
| } |
| if (i < src_width) { // left-over |
| WebPConvertARGBToUV_C(argb + i, u, v, src_width - i, do_store); |
| } |
| } |
| |
| // Convert 16 packed ARGB 16b-values to r[], g[], b[] |
| static WEBP_INLINE void RGBA32PackedToPlanar_16b_SSE41( |
| const uint16_t* const rgbx, |
| __m128i* const r, __m128i* const g, __m128i* const b) { |
| const __m128i in0 = LOAD_16(rgbx + 0); // r0 | g0 | b0 |x| r1 | g1 | b1 |x |
| const __m128i in1 = LOAD_16(rgbx + 8); // r2 | g2 | b2 |x| r3 | g3 | b3 |x |
| const __m128i in2 = LOAD_16(rgbx + 16); // r4 | ... |
| const __m128i in3 = LOAD_16(rgbx + 24); // r6 | ... |
| // aarrggbb as 16-bit. |
| const __m128i shuff0 = |
| _mm_set_epi8(-1, -1, -1, -1, 13, 12, 5, 4, 11, 10, 3, 2, 9, 8, 1, 0); |
| const __m128i shuff1 = |
| _mm_set_epi8(13, 12, 5, 4, -1, -1, -1, -1, 11, 10, 3, 2, 9, 8, 1, 0); |
| const __m128i A0 = _mm_shuffle_epi8(in0, shuff0); |
| const __m128i A1 = _mm_shuffle_epi8(in1, shuff1); |
| const __m128i A2 = _mm_shuffle_epi8(in2, shuff0); |
| const __m128i A3 = _mm_shuffle_epi8(in3, shuff1); |
| // R0R1G0G1 |
| // B0B1**** |
| // R2R3G2G3 |
| // B2B3**** |
| // (OR is used to free port 5 for the unpack) |
| const __m128i B0 = _mm_unpacklo_epi32(A0, A1); |
| const __m128i B1 = _mm_or_si128(A0, A1); |
| const __m128i B2 = _mm_unpacklo_epi32(A2, A3); |
| const __m128i B3 = _mm_or_si128(A2, A3); |
| // Gather the channels. |
| *r = _mm_unpacklo_epi64(B0, B2); |
| *g = _mm_unpackhi_epi64(B0, B2); |
| *b = _mm_unpackhi_epi64(B1, B3); |
| } |
| |
| static void ConvertRGBA32ToUV_SSE41(const uint16_t* rgb, |
| uint8_t* u, uint8_t* v, int width) { |
| const int max_width = width & ~15; |
| const uint16_t* const last_rgb = rgb + 4 * max_width; |
| while (rgb < last_rgb) { |
| __m128i r, g, b, U0, V0, U1, V1; |
| RGBA32PackedToPlanar_16b_SSE41(rgb + 0, &r, &g, &b); |
| ConvertRGBToUV_SSE41(&r, &g, &b, &U0, &V0); |
| RGBA32PackedToPlanar_16b_SSE41(rgb + 32, &r, &g, &b); |
| ConvertRGBToUV_SSE41(&r, &g, &b, &U1, &V1); |
| STORE_16(_mm_packus_epi16(U0, U1), u); |
| STORE_16(_mm_packus_epi16(V0, V1), v); |
| u += 16; |
| v += 16; |
| rgb += 2 * 32; |
| } |
| if (max_width < width) { // left-over |
| WebPConvertRGBA32ToUV_C(rgb, u, v, width - max_width); |
| } |
| } |
| |
| //------------------------------------------------------------------------------ |
| |
| extern void WebPInitConvertARGBToYUVSSE41(void); |
| |
| WEBP_TSAN_IGNORE_FUNCTION void WebPInitConvertARGBToYUVSSE41(void) { |
| WebPConvertARGBToY = ConvertARGBToY_SSE41; |
| WebPConvertARGBToUV = ConvertARGBToUV_SSE41; |
| |
| WebPConvertRGB24ToY = ConvertRGB24ToY_SSE41; |
| WebPConvertBGR24ToY = ConvertBGR24ToY_SSE41; |
| |
| WebPConvertRGBA32ToUV = ConvertRGBA32ToUV_SSE41; |
| } |
| |
| //------------------------------------------------------------------------------ |
| |
| #else // !WEBP_USE_SSE41 |
| |
| WEBP_DSP_INIT_STUB(WebPInitSamplersSSE41) |
| WEBP_DSP_INIT_STUB(WebPInitConvertARGBToYUVSSE41) |
| |
| #endif // WEBP_USE_SSE41 |
