diff options
Diffstat (limited to 'src/3rdparty/libwebp/src/dsp/lossless_sse2.c')
-rw-r--r-- | src/3rdparty/libwebp/src/dsp/lossless_sse2.c | 535 |
1 files changed, 535 insertions, 0 deletions
diff --git a/src/3rdparty/libwebp/src/dsp/lossless_sse2.c b/src/3rdparty/libwebp/src/dsp/lossless_sse2.c new file mode 100644 index 0000000..7130909 --- /dev/null +++ b/src/3rdparty/libwebp/src/dsp/lossless_sse2.c @@ -0,0 +1,535 @@ +// 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. +// ----------------------------------------------------------------------------- +// +// SSE2 variant of methods for lossless decoder +// +// Author: Skal (pascal.massimino@gmail.com) + +#include "./dsp.h" + +#include <assert.h> + +#if defined(WEBP_USE_SSE2) +#include <emmintrin.h> +#include "./lossless.h" + +//------------------------------------------------------------------------------ +// Predictor Transform + +static WEBP_INLINE uint32_t ClampedAddSubtractFull(uint32_t c0, uint32_t c1, + uint32_t c2) { + const __m128i zero = _mm_setzero_si128(); + const __m128i C0 = _mm_unpacklo_epi8(_mm_cvtsi32_si128(c0), zero); + const __m128i C1 = _mm_unpacklo_epi8(_mm_cvtsi32_si128(c1), zero); + const __m128i C2 = _mm_unpacklo_epi8(_mm_cvtsi32_si128(c2), zero); + const __m128i V1 = _mm_add_epi16(C0, C1); + const __m128i V2 = _mm_sub_epi16(V1, C2); + const __m128i b = _mm_packus_epi16(V2, V2); + const uint32_t output = _mm_cvtsi128_si32(b); + return output; +} + +static WEBP_INLINE uint32_t ClampedAddSubtractHalf(uint32_t c0, uint32_t c1, + uint32_t c2) { + const __m128i zero = _mm_setzero_si128(); + const __m128i C0 = _mm_unpacklo_epi8(_mm_cvtsi32_si128(c0), zero); + const __m128i C1 = _mm_unpacklo_epi8(_mm_cvtsi32_si128(c1), zero); + const __m128i B0 = _mm_unpacklo_epi8(_mm_cvtsi32_si128(c2), zero); + const __m128i avg = _mm_add_epi16(C1, C0); + const __m128i A0 = _mm_srli_epi16(avg, 1); + const __m128i A1 = _mm_sub_epi16(A0, B0); + const __m128i BgtA = _mm_cmpgt_epi16(B0, A0); + const __m128i A2 = _mm_sub_epi16(A1, BgtA); + const __m128i A3 = _mm_srai_epi16(A2, 1); + const __m128i A4 = _mm_add_epi16(A0, A3); + const __m128i A5 = _mm_packus_epi16(A4, A4); + const uint32_t output = _mm_cvtsi128_si32(A5); + return output; +} + +static WEBP_INLINE uint32_t Select(uint32_t a, uint32_t b, uint32_t c) { + int pa_minus_pb; + const __m128i zero = _mm_setzero_si128(); + const __m128i A0 = _mm_cvtsi32_si128(a); + const __m128i B0 = _mm_cvtsi32_si128(b); + const __m128i C0 = _mm_cvtsi32_si128(c); + const __m128i AC0 = _mm_subs_epu8(A0, C0); + const __m128i CA0 = _mm_subs_epu8(C0, A0); + const __m128i BC0 = _mm_subs_epu8(B0, C0); + const __m128i CB0 = _mm_subs_epu8(C0, B0); + const __m128i AC = _mm_or_si128(AC0, CA0); + const __m128i BC = _mm_or_si128(BC0, CB0); + const __m128i pa = _mm_unpacklo_epi8(AC, zero); // |a - c| + const __m128i pb = _mm_unpacklo_epi8(BC, zero); // |b - c| + const __m128i diff = _mm_sub_epi16(pb, pa); + { + int16_t out[8]; + _mm_storeu_si128((__m128i*)out, diff); + pa_minus_pb = out[0] + out[1] + out[2] + out[3]; + } + return (pa_minus_pb <= 0) ? a : b; +} + +static WEBP_INLINE __m128i Average2_128i(uint32_t a0, uint32_t a1) { + const __m128i zero = _mm_setzero_si128(); + const __m128i A0 = _mm_unpacklo_epi8(_mm_cvtsi32_si128(a0), zero); + const __m128i A1 = _mm_unpacklo_epi8(_mm_cvtsi32_si128(a1), zero); + const __m128i sum = _mm_add_epi16(A1, A0); + const __m128i avg = _mm_srli_epi16(sum, 1); + return avg; +} + +static WEBP_INLINE uint32_t Average2(uint32_t a0, uint32_t a1) { + const __m128i avg = Average2_128i(a0, a1); + const __m128i A2 = _mm_packus_epi16(avg, avg); + const uint32_t output = _mm_cvtsi128_si32(A2); + return output; +} + +static WEBP_INLINE uint32_t Average3(uint32_t a0, uint32_t a1, uint32_t a2) { + const __m128i zero = _mm_setzero_si128(); + const __m128i avg1 = Average2_128i(a0, a2); + const __m128i A1 = _mm_unpacklo_epi8(_mm_cvtsi32_si128(a1), zero); + const __m128i sum = _mm_add_epi16(avg1, A1); + const __m128i avg2 = _mm_srli_epi16(sum, 1); + const __m128i A2 = _mm_packus_epi16(avg2, avg2); + const uint32_t output = _mm_cvtsi128_si32(A2); + return output; +} + +static WEBP_INLINE uint32_t Average4(uint32_t a0, uint32_t a1, + uint32_t a2, uint32_t a3) { + const __m128i avg1 = Average2_128i(a0, a1); + const __m128i avg2 = Average2_128i(a2, a3); + const __m128i sum = _mm_add_epi16(avg2, avg1); + const __m128i avg3 = _mm_srli_epi16(sum, 1); + const __m128i A0 = _mm_packus_epi16(avg3, avg3); + const uint32_t output = _mm_cvtsi128_si32(A0); + return output; +} + +static uint32_t Predictor5(uint32_t left, const uint32_t* const top) { + const uint32_t pred = Average3(left, top[0], top[1]); + return pred; +} +static uint32_t Predictor6(uint32_t left, const uint32_t* const top) { + const uint32_t pred = Average2(left, top[-1]); + return pred; +} +static uint32_t Predictor7(uint32_t left, const uint32_t* const top) { + const uint32_t pred = Average2(left, top[0]); + return pred; +} +static uint32_t Predictor8(uint32_t left, const uint32_t* const top) { + const uint32_t pred = Average2(top[-1], top[0]); + (void)left; + return pred; +} +static uint32_t Predictor9(uint32_t left, const uint32_t* const top) { + const uint32_t pred = Average2(top[0], top[1]); + (void)left; + return pred; +} +static uint32_t Predictor10(uint32_t left, const uint32_t* const top) { + const uint32_t pred = Average4(left, top[-1], top[0], top[1]); + return pred; +} +static uint32_t Predictor11(uint32_t left, const uint32_t* const top) { + const uint32_t pred = Select(top[0], left, top[-1]); + return pred; +} +static uint32_t Predictor12(uint32_t left, const uint32_t* const top) { + const uint32_t pred = ClampedAddSubtractFull(left, top[0], top[-1]); + return pred; +} +static uint32_t Predictor13(uint32_t left, const uint32_t* const top) { + const uint32_t pred = ClampedAddSubtractHalf(left, top[0], top[-1]); + return pred; +} + +//------------------------------------------------------------------------------ +// Subtract-Green Transform + +static void SubtractGreenFromBlueAndRed(uint32_t* argb_data, int num_pixels) { + const __m128i mask = _mm_set1_epi32(0x0000ff00); + int i; + for (i = 0; i + 4 <= num_pixels; i += 4) { + const __m128i in = _mm_loadu_si128((__m128i*)&argb_data[i]); + const __m128i in_00g0 = _mm_and_si128(in, mask); // 00g0|00g0|... + const __m128i in_0g00 = _mm_slli_epi32(in_00g0, 8); // 0g00|0g00|... + const __m128i in_000g = _mm_srli_epi32(in_00g0, 8); // 000g|000g|... + const __m128i in_0g0g = _mm_or_si128(in_0g00, in_000g); + const __m128i out = _mm_sub_epi8(in, in_0g0g); + _mm_storeu_si128((__m128i*)&argb_data[i], out); + } + // fallthrough and finish off with plain-C + VP8LSubtractGreenFromBlueAndRed_C(argb_data + i, num_pixels - i); +} + +static void AddGreenToBlueAndRed(uint32_t* argb_data, int num_pixels) { + const __m128i mask = _mm_set1_epi32(0x0000ff00); + int i; + for (i = 0; i + 4 <= num_pixels; i += 4) { + const __m128i in = _mm_loadu_si128((__m128i*)&argb_data[i]); + const __m128i in_00g0 = _mm_and_si128(in, mask); // 00g0|00g0|... + const __m128i in_0g00 = _mm_slli_epi32(in_00g0, 8); // 0g00|0g00|... + const __m128i in_000g = _mm_srli_epi32(in_00g0, 8); // 000g|000g|... + const __m128i in_0g0g = _mm_or_si128(in_0g00, in_000g); + const __m128i out = _mm_add_epi8(in, in_0g0g); + _mm_storeu_si128((__m128i*)&argb_data[i], out); + } + // fallthrough and finish off with plain-C + VP8LAddGreenToBlueAndRed_C(argb_data + i, num_pixels - i); +} + +//------------------------------------------------------------------------------ +// Color Transform + +static WEBP_INLINE __m128i ColorTransformDelta(__m128i color_pred, + __m128i color) { + // We simulate signed 8-bit multiplication as: + // * Left shift the two (8-bit) numbers by 8 bits, + // * Perform a 16-bit signed multiplication and retain the higher 16-bits. + const __m128i color_pred_shifted = _mm_slli_epi32(color_pred, 8); + const __m128i color_shifted = _mm_slli_epi32(color, 8); + // Note: This performs multiplication on 8 packed 16-bit numbers, 4 of which + // happen to be zeroes. + const __m128i signed_mult = + _mm_mulhi_epi16(color_pred_shifted, color_shifted); + return _mm_srli_epi32(signed_mult, 5); +} + +static WEBP_INLINE void TransformColor(const VP8LMultipliers* const m, + uint32_t* argb_data, + int num_pixels) { + const __m128i g_to_r = _mm_set1_epi32(m->green_to_red_); // multipliers + const __m128i g_to_b = _mm_set1_epi32(m->green_to_blue_); + const __m128i r_to_b = _mm_set1_epi32(m->red_to_blue_); + + int i; + + for (i = 0; i + 4 <= num_pixels; i += 4) { + const __m128i in = _mm_loadu_si128((__m128i*)&argb_data[i]); + const __m128i alpha_green_mask = _mm_set1_epi32(0xff00ff00); // masks + const __m128i red_mask = _mm_set1_epi32(0x00ff0000); + const __m128i green_mask = _mm_set1_epi32(0x0000ff00); + const __m128i lower_8bit_mask = _mm_set1_epi32(0x000000ff); + const __m128i ag = _mm_and_si128(in, alpha_green_mask); // alpha, green + const __m128i r = _mm_srli_epi32(_mm_and_si128(in, red_mask), 16); + const __m128i g = _mm_srli_epi32(_mm_and_si128(in, green_mask), 8); + const __m128i b = in; + + const __m128i r_delta = ColorTransformDelta(g_to_r, g); // red + const __m128i r_new = + _mm_and_si128(_mm_sub_epi32(r, r_delta), lower_8bit_mask); + const __m128i r_new_shifted = _mm_slli_epi32(r_new, 16); + + const __m128i b_delta_1 = ColorTransformDelta(g_to_b, g); // blue + const __m128i b_delta_2 = ColorTransformDelta(r_to_b, r); + const __m128i b_delta = _mm_add_epi32(b_delta_1, b_delta_2); + const __m128i b_new = + _mm_and_si128(_mm_sub_epi32(b, b_delta), lower_8bit_mask); + + const __m128i out = _mm_or_si128(_mm_or_si128(ag, r_new_shifted), b_new); + _mm_storeu_si128((__m128i*)&argb_data[i], out); + } + + // Fall-back to C-version for left-overs. + VP8LTransformColor_C(m, argb_data + i, num_pixels - i); +} + +static WEBP_INLINE void TransformColorInverse(const VP8LMultipliers* const m, + uint32_t* argb_data, + int num_pixels) { + const __m128i g_to_r = _mm_set1_epi32(m->green_to_red_); // multipliers + const __m128i g_to_b = _mm_set1_epi32(m->green_to_blue_); + const __m128i r_to_b = _mm_set1_epi32(m->red_to_blue_); + + int i; + + for (i = 0; i + 4 <= num_pixels; i += 4) { + const __m128i in = _mm_loadu_si128((__m128i*)&argb_data[i]); + const __m128i alpha_green_mask = _mm_set1_epi32(0xff00ff00); // masks + const __m128i red_mask = _mm_set1_epi32(0x00ff0000); + const __m128i green_mask = _mm_set1_epi32(0x0000ff00); + const __m128i lower_8bit_mask = _mm_set1_epi32(0x000000ff); + const __m128i ag = _mm_and_si128(in, alpha_green_mask); // alpha, green + const __m128i r = _mm_srli_epi32(_mm_and_si128(in, red_mask), 16); + const __m128i g = _mm_srli_epi32(_mm_and_si128(in, green_mask), 8); + const __m128i b = in; + + const __m128i r_delta = ColorTransformDelta(g_to_r, g); // red + const __m128i r_new = + _mm_and_si128(_mm_add_epi32(r, r_delta), lower_8bit_mask); + const __m128i r_new_shifted = _mm_slli_epi32(r_new, 16); + + const __m128i b_delta_1 = ColorTransformDelta(g_to_b, g); // blue + const __m128i b_delta_2 = ColorTransformDelta(r_to_b, r_new); + const __m128i b_delta = _mm_add_epi32(b_delta_1, b_delta_2); + const __m128i b_new = + _mm_and_si128(_mm_add_epi32(b, b_delta), lower_8bit_mask); + + const __m128i out = _mm_or_si128(_mm_or_si128(ag, r_new_shifted), b_new); + _mm_storeu_si128((__m128i*)&argb_data[i], out); + } + + // Fall-back to C-version for left-overs. + VP8LTransformColorInverse_C(m, argb_data + i, num_pixels - i); +} + +//------------------------------------------------------------------------------ +// Color-space conversion functions + +static void ConvertBGRAToRGBA(const uint32_t* src, + int num_pixels, uint8_t* dst) { + const __m128i* in = (const __m128i*)src; + __m128i* out = (__m128i*)dst; + while (num_pixels >= 8) { + const __m128i bgra0 = _mm_loadu_si128(in++); // bgra0|bgra1|bgra2|bgra3 + const __m128i bgra4 = _mm_loadu_si128(in++); // bgra4|bgra5|bgra6|bgra7 + const __m128i v0l = _mm_unpacklo_epi8(bgra0, bgra4); // b0b4g0g4r0r4a0a4... + const __m128i v0h = _mm_unpackhi_epi8(bgra0, bgra4); // b2b6g2g6r2r6a2a6... + const __m128i v1l = _mm_unpacklo_epi8(v0l, v0h); // b0b2b4b6g0g2g4g6... + const __m128i v1h = _mm_unpackhi_epi8(v0l, v0h); // b1b3b5b7g1g3g5g7... + const __m128i v2l = _mm_unpacklo_epi8(v1l, v1h); // b0...b7 | g0...g7 + const __m128i v2h = _mm_unpackhi_epi8(v1l, v1h); // r0...r7 | a0...a7 + const __m128i ga0 = _mm_unpackhi_epi64(v2l, v2h); // g0...g7 | a0...a7 + const __m128i rb0 = _mm_unpacklo_epi64(v2h, v2l); // r0...r7 | b0...b7 + const __m128i rg0 = _mm_unpacklo_epi8(rb0, ga0); // r0g0r1g1 ... r6g6r7g7 + const __m128i ba0 = _mm_unpackhi_epi8(rb0, ga0); // b0a0b1a1 ... b6a6b7a7 + const __m128i rgba0 = _mm_unpacklo_epi16(rg0, ba0); // rgba0|rgba1... + const __m128i rgba4 = _mm_unpackhi_epi16(rg0, ba0); // rgba4|rgba5... + _mm_storeu_si128(out++, rgba0); + _mm_storeu_si128(out++, rgba4); + num_pixels -= 8; + } + // left-overs + VP8LConvertBGRAToRGBA_C((const uint32_t*)in, num_pixels, (uint8_t*)out); +} + +static void ConvertBGRAToRGBA4444(const uint32_t* src, + int num_pixels, uint8_t* dst) { + const __m128i mask_0x0f = _mm_set1_epi8(0x0f); + const __m128i mask_0xf0 = _mm_set1_epi8(0xf0); + const __m128i* in = (const __m128i*)src; + __m128i* out = (__m128i*)dst; + while (num_pixels >= 8) { + const __m128i bgra0 = _mm_loadu_si128(in++); // bgra0|bgra1|bgra2|bgra3 + const __m128i bgra4 = _mm_loadu_si128(in++); // bgra4|bgra5|bgra6|bgra7 + const __m128i v0l = _mm_unpacklo_epi8(bgra0, bgra4); // b0b4g0g4r0r4a0a4... + const __m128i v0h = _mm_unpackhi_epi8(bgra0, bgra4); // b2b6g2g6r2r6a2a6... + const __m128i v1l = _mm_unpacklo_epi8(v0l, v0h); // b0b2b4b6g0g2g4g6... + const __m128i v1h = _mm_unpackhi_epi8(v0l, v0h); // b1b3b5b7g1g3g5g7... + const __m128i v2l = _mm_unpacklo_epi8(v1l, v1h); // b0...b7 | g0...g7 + const __m128i v2h = _mm_unpackhi_epi8(v1l, v1h); // r0...r7 | a0...a7 + const __m128i ga0 = _mm_unpackhi_epi64(v2l, v2h); // g0...g7 | a0...a7 + const __m128i rb0 = _mm_unpacklo_epi64(v2h, v2l); // r0...r7 | b0...b7 + const __m128i ga1 = _mm_srli_epi16(ga0, 4); // g0-|g1-|...|a6-|a7- + const __m128i rb1 = _mm_and_si128(rb0, mask_0xf0); // -r0|-r1|...|-b6|-a7 + const __m128i ga2 = _mm_and_si128(ga1, mask_0x0f); // g0-|g1-|...|a6-|a7- + const __m128i rgba0 = _mm_or_si128(ga2, rb1); // rg0..rg7 | ba0..ba7 + const __m128i rgba1 = _mm_srli_si128(rgba0, 8); // ba0..ba7 | 0 +#ifdef WEBP_SWAP_16BIT_CSP + const __m128i rgba = _mm_unpacklo_epi8(rgba1, rgba0); // barg0...barg7 +#else + const __m128i rgba = _mm_unpacklo_epi8(rgba0, rgba1); // rgba0...rgba7 +#endif + _mm_storeu_si128(out++, rgba); + num_pixels -= 8; + } + // left-overs + VP8LConvertBGRAToRGBA4444_C((const uint32_t*)in, num_pixels, (uint8_t*)out); +} + +static void ConvertBGRAToRGB565(const uint32_t* src, + int num_pixels, uint8_t* dst) { + const __m128i mask_0xe0 = _mm_set1_epi8(0xe0); + const __m128i mask_0xf8 = _mm_set1_epi8(0xf8); + const __m128i mask_0x07 = _mm_set1_epi8(0x07); + const __m128i* in = (const __m128i*)src; + __m128i* out = (__m128i*)dst; + while (num_pixels >= 8) { + const __m128i bgra0 = _mm_loadu_si128(in++); // bgra0|bgra1|bgra2|bgra3 + const __m128i bgra4 = _mm_loadu_si128(in++); // bgra4|bgra5|bgra6|bgra7 + const __m128i v0l = _mm_unpacklo_epi8(bgra0, bgra4); // b0b4g0g4r0r4a0a4... + const __m128i v0h = _mm_unpackhi_epi8(bgra0, bgra4); // b2b6g2g6r2r6a2a6... + const __m128i v1l = _mm_unpacklo_epi8(v0l, v0h); // b0b2b4b6g0g2g4g6... + const __m128i v1h = _mm_unpackhi_epi8(v0l, v0h); // b1b3b5b7g1g3g5g7... + const __m128i v2l = _mm_unpacklo_epi8(v1l, v1h); // b0...b7 | g0...g7 + const __m128i v2h = _mm_unpackhi_epi8(v1l, v1h); // r0...r7 | a0...a7 + const __m128i ga0 = _mm_unpackhi_epi64(v2l, v2h); // g0...g7 | a0...a7 + const __m128i rb0 = _mm_unpacklo_epi64(v2h, v2l); // r0...r7 | b0...b7 + const __m128i rb1 = _mm_and_si128(rb0, mask_0xf8); // -r0..-r7|-b0..-b7 + const __m128i g_lo1 = _mm_srli_epi16(ga0, 5); + const __m128i g_lo2 = _mm_and_si128(g_lo1, mask_0x07); // g0-...g7-|xx (3b) + const __m128i g_hi1 = _mm_slli_epi16(ga0, 3); + const __m128i g_hi2 = _mm_and_si128(g_hi1, mask_0xe0); // -g0...-g7|xx (3b) + const __m128i b0 = _mm_srli_si128(rb1, 8); // -b0...-b7|0 + const __m128i rg1 = _mm_or_si128(rb1, g_lo2); // gr0...gr7|xx + const __m128i b1 = _mm_srli_epi16(b0, 3); + const __m128i gb1 = _mm_or_si128(b1, g_hi2); // bg0...bg7|xx +#ifdef WEBP_SWAP_16BIT_CSP + const __m128i rgba = _mm_unpacklo_epi8(gb1, rg1); // rggb0...rggb7 +#else + const __m128i rgba = _mm_unpacklo_epi8(rg1, gb1); // bgrb0...bgrb7 +#endif + _mm_storeu_si128(out++, rgba); + num_pixels -= 8; + } + // left-overs + VP8LConvertBGRAToRGB565_C((const uint32_t*)in, num_pixels, (uint8_t*)out); +} + +static void ConvertBGRAToBGR(const uint32_t* src, + int num_pixels, uint8_t* dst) { + const __m128i mask_l = _mm_set_epi32(0, 0x00ffffff, 0, 0x00ffffff); + const __m128i mask_h = _mm_set_epi32(0x00ffffff, 0, 0x00ffffff, 0); + const __m128i* in = (const __m128i*)src; + const uint8_t* const end = dst + num_pixels * 3; + // the last storel_epi64 below writes 8 bytes starting at offset 18 + while (dst + 26 <= end) { + const __m128i bgra0 = _mm_loadu_si128(in++); // bgra0|bgra1|bgra2|bgra3 + const __m128i bgra4 = _mm_loadu_si128(in++); // bgra4|bgra5|bgra6|bgra7 + const __m128i a0l = _mm_and_si128(bgra0, mask_l); // bgr0|0|bgr0|0 + const __m128i a4l = _mm_and_si128(bgra4, mask_l); // bgr0|0|bgr0|0 + const __m128i a0h = _mm_and_si128(bgra0, mask_h); // 0|bgr0|0|bgr0 + const __m128i a4h = _mm_and_si128(bgra4, mask_h); // 0|bgr0|0|bgr0 + const __m128i b0h = _mm_srli_epi64(a0h, 8); // 000b|gr00|000b|gr00 + const __m128i b4h = _mm_srli_epi64(a4h, 8); // 000b|gr00|000b|gr00 + const __m128i c0 = _mm_or_si128(a0l, b0h); // rgbrgb00|rgbrgb00 + const __m128i c4 = _mm_or_si128(a4l, b4h); // rgbrgb00|rgbrgb00 + const __m128i c2 = _mm_srli_si128(c0, 8); + const __m128i c6 = _mm_srli_si128(c4, 8); + _mm_storel_epi64((__m128i*)(dst + 0), c0); + _mm_storel_epi64((__m128i*)(dst + 6), c2); + _mm_storel_epi64((__m128i*)(dst + 12), c4); + _mm_storel_epi64((__m128i*)(dst + 18), c6); + dst += 24; + num_pixels -= 8; + } + // left-overs + VP8LConvertBGRAToBGR_C((const uint32_t*)in, num_pixels, dst); +} + +//------------------------------------------------------------------------------ + +#define LINE_SIZE 16 // 8 or 16 +static void AddVector(const uint32_t* a, const uint32_t* b, uint32_t* out, + int size) { + int i; + assert(size % LINE_SIZE == 0); + for (i = 0; i < size; i += LINE_SIZE) { + const __m128i a0 = _mm_loadu_si128((__m128i*)&a[i + 0]); + const __m128i a1 = _mm_loadu_si128((__m128i*)&a[i + 4]); +#if (LINE_SIZE == 16) + const __m128i a2 = _mm_loadu_si128((__m128i*)&a[i + 8]); + const __m128i a3 = _mm_loadu_si128((__m128i*)&a[i + 12]); +#endif + const __m128i b0 = _mm_loadu_si128((__m128i*)&b[i + 0]); + const __m128i b1 = _mm_loadu_si128((__m128i*)&b[i + 4]); +#if (LINE_SIZE == 16) + const __m128i b2 = _mm_loadu_si128((__m128i*)&b[i + 8]); + const __m128i b3 = _mm_loadu_si128((__m128i*)&b[i + 12]); +#endif + _mm_storeu_si128((__m128i*)&out[i + 0], _mm_add_epi32(a0, b0)); + _mm_storeu_si128((__m128i*)&out[i + 4], _mm_add_epi32(a1, b1)); +#if (LINE_SIZE == 16) + _mm_storeu_si128((__m128i*)&out[i + 8], _mm_add_epi32(a2, b2)); + _mm_storeu_si128((__m128i*)&out[i + 12], _mm_add_epi32(a3, b3)); +#endif + } +} + +static void AddVectorEq(const uint32_t* a, uint32_t* out, int size) { + int i; + assert(size % LINE_SIZE == 0); + for (i = 0; i < size; i += LINE_SIZE) { + const __m128i a0 = _mm_loadu_si128((__m128i*)&a[i + 0]); + const __m128i a1 = _mm_loadu_si128((__m128i*)&a[i + 4]); +#if (LINE_SIZE == 16) + const __m128i a2 = _mm_loadu_si128((__m128i*)&a[i + 8]); + const __m128i a3 = _mm_loadu_si128((__m128i*)&a[i + 12]); +#endif + const __m128i b0 = _mm_loadu_si128((__m128i*)&out[i + 0]); + const __m128i b1 = _mm_loadu_si128((__m128i*)&out[i + 4]); +#if (LINE_SIZE == 16) + const __m128i b2 = _mm_loadu_si128((__m128i*)&out[i + 8]); + const __m128i b3 = _mm_loadu_si128((__m128i*)&out[i + 12]); +#endif + _mm_storeu_si128((__m128i*)&out[i + 0], _mm_add_epi32(a0, b0)); + _mm_storeu_si128((__m128i*)&out[i + 4], _mm_add_epi32(a1, b1)); +#if (LINE_SIZE == 16) + _mm_storeu_si128((__m128i*)&out[i + 8], _mm_add_epi32(a2, b2)); + _mm_storeu_si128((__m128i*)&out[i + 12], _mm_add_epi32(a3, b3)); +#endif + } +} +#undef LINE_SIZE + +// Note we are adding uint32_t's as *signed* int32's (using _mm_add_epi32). But +// that's ok since the histogram values are less than 1<<28 (max picture size). +static void HistogramAdd(const VP8LHistogram* const a, + const VP8LHistogram* const b, + VP8LHistogram* const out) { + int i; + const int literal_size = VP8LHistogramNumCodes(a->palette_code_bits_); + assert(a->palette_code_bits_ == b->palette_code_bits_); + if (b != out) { + AddVector(a->literal_, b->literal_, out->literal_, NUM_LITERAL_CODES); + AddVector(a->red_, b->red_, out->red_, NUM_LITERAL_CODES); + AddVector(a->blue_, b->blue_, out->blue_, NUM_LITERAL_CODES); + AddVector(a->alpha_, b->alpha_, out->alpha_, NUM_LITERAL_CODES); + } else { + AddVectorEq(a->literal_, out->literal_, NUM_LITERAL_CODES); + AddVectorEq(a->red_, out->red_, NUM_LITERAL_CODES); + AddVectorEq(a->blue_, out->blue_, NUM_LITERAL_CODES); + AddVectorEq(a->alpha_, out->alpha_, NUM_LITERAL_CODES); + } + for (i = NUM_LITERAL_CODES; i < literal_size; ++i) { + out->literal_[i] = a->literal_[i] + b->literal_[i]; + } + for (i = 0; i < NUM_DISTANCE_CODES; ++i) { + out->distance_[i] = a->distance_[i] + b->distance_[i]; + } +} + +#endif // WEBP_USE_SSE2 + +//------------------------------------------------------------------------------ + +extern void VP8LDspInitSSE2(void); + +void VP8LDspInitSSE2(void) { +#if defined(WEBP_USE_SSE2) + VP8LPredictors[5] = Predictor5; + VP8LPredictors[6] = Predictor6; + VP8LPredictors[7] = Predictor7; + VP8LPredictors[8] = Predictor8; + VP8LPredictors[9] = Predictor9; + VP8LPredictors[10] = Predictor10; + VP8LPredictors[11] = Predictor11; + VP8LPredictors[12] = Predictor12; + VP8LPredictors[13] = Predictor13; + + VP8LSubtractGreenFromBlueAndRed = SubtractGreenFromBlueAndRed; + VP8LAddGreenToBlueAndRed = AddGreenToBlueAndRed; + + VP8LTransformColor = TransformColor; + VP8LTransformColorInverse = TransformColorInverse; + + VP8LConvertBGRAToRGBA = ConvertBGRAToRGBA; + VP8LConvertBGRAToRGBA4444 = ConvertBGRAToRGBA4444; + VP8LConvertBGRAToRGB565 = ConvertBGRAToRGB565; + VP8LConvertBGRAToBGR = ConvertBGRAToBGR; + + VP8LHistogramAdd = HistogramAdd; +#endif // WEBP_USE_SSE2 +} + +//------------------------------------------------------------------------------ |