From ee3cf211c6fd4d1e30617467cdbbe945798a68b3 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?R=C3=A9mi=20Verschelde?= Date: Tue, 11 Oct 2016 23:35:58 +0200 Subject: webp: Make it a module and unbundle libwebp thirdparty files Note that there are two Godot-specific changes made to libwebp for the javascript/HTML5 platform. They are documented in the README.md. --- drivers/webp/dsp/alpha_processing_sse2.c | 298 ------------------------------- 1 file changed, 298 deletions(-) delete mode 100644 drivers/webp/dsp/alpha_processing_sse2.c (limited to 'drivers/webp/dsp/alpha_processing_sse2.c') diff --git a/drivers/webp/dsp/alpha_processing_sse2.c b/drivers/webp/dsp/alpha_processing_sse2.c deleted file mode 100644 index 5acb481dcd..0000000000 --- a/drivers/webp/dsp/alpha_processing_sse2.c +++ /dev/null @@ -1,298 +0,0 @@ -// 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. -// ----------------------------------------------------------------------------- -// -// Utilities for processing transparent channel. -// -// Author: Skal (pascal.massimino@gmail.com) - -#include "./dsp.h" - -#if defined(WEBP_USE_SSE2) -#include - -//------------------------------------------------------------------------------ - -static int DispatchAlpha(const uint8_t* alpha, int alpha_stride, - int width, int height, - uint8_t* dst, int dst_stride) { - // alpha_and stores an 'and' operation of all the alpha[] values. The final - // value is not 0xff if any of the alpha[] is not equal to 0xff. - uint32_t alpha_and = 0xff; - int i, j; - const __m128i zero = _mm_setzero_si128(); - const __m128i rgb_mask = _mm_set1_epi32(0xffffff00u); // to preserve RGB - const __m128i all_0xff = _mm_set_epi32(0, 0, ~0u, ~0u); - __m128i all_alphas = all_0xff; - - // We must be able to access 3 extra bytes after the last written byte - // 'dst[4 * width - 4]', because we don't know if alpha is the first or the - // last byte of the quadruplet. - const int limit = (width - 1) & ~7; - - for (j = 0; j < height; ++j) { - __m128i* out = (__m128i*)dst; - for (i = 0; i < limit; i += 8) { - // load 8 alpha bytes - const __m128i a0 = _mm_loadl_epi64((const __m128i*)&alpha[i]); - const __m128i a1 = _mm_unpacklo_epi8(a0, zero); - const __m128i a2_lo = _mm_unpacklo_epi16(a1, zero); - const __m128i a2_hi = _mm_unpackhi_epi16(a1, zero); - // load 8 dst pixels (32 bytes) - const __m128i b0_lo = _mm_loadu_si128(out + 0); - const __m128i b0_hi = _mm_loadu_si128(out + 1); - // mask dst alpha values - const __m128i b1_lo = _mm_and_si128(b0_lo, rgb_mask); - const __m128i b1_hi = _mm_and_si128(b0_hi, rgb_mask); - // combine - const __m128i b2_lo = _mm_or_si128(b1_lo, a2_lo); - const __m128i b2_hi = _mm_or_si128(b1_hi, a2_hi); - // store - _mm_storeu_si128(out + 0, b2_lo); - _mm_storeu_si128(out + 1, b2_hi); - // accumulate eight alpha 'and' in parallel - all_alphas = _mm_and_si128(all_alphas, a0); - out += 2; - } - for (; i < width; ++i) { - const uint32_t alpha_value = alpha[i]; - dst[4 * i] = alpha_value; - alpha_and &= alpha_value; - } - alpha += alpha_stride; - dst += dst_stride; - } - // Combine the eight alpha 'and' into a 8-bit mask. - alpha_and &= _mm_movemask_epi8(_mm_cmpeq_epi8(all_alphas, all_0xff)); - return (alpha_and != 0xff); -} - -static void DispatchAlphaToGreen(const uint8_t* alpha, int alpha_stride, - int width, int height, - uint32_t* dst, int dst_stride) { - int i, j; - const __m128i zero = _mm_setzero_si128(); - const int limit = width & ~15; - for (j = 0; j < height; ++j) { - for (i = 0; i < limit; i += 16) { // process 16 alpha bytes - const __m128i a0 = _mm_loadu_si128((const __m128i*)&alpha[i]); - const __m128i a1 = _mm_unpacklo_epi8(zero, a0); // note the 'zero' first! - const __m128i b1 = _mm_unpackhi_epi8(zero, a0); - const __m128i a2_lo = _mm_unpacklo_epi16(a1, zero); - const __m128i b2_lo = _mm_unpacklo_epi16(b1, zero); - const __m128i a2_hi = _mm_unpackhi_epi16(a1, zero); - const __m128i b2_hi = _mm_unpackhi_epi16(b1, zero); - _mm_storeu_si128((__m128i*)&dst[i + 0], a2_lo); - _mm_storeu_si128((__m128i*)&dst[i + 4], a2_hi); - _mm_storeu_si128((__m128i*)&dst[i + 8], b2_lo); - _mm_storeu_si128((__m128i*)&dst[i + 12], b2_hi); - } - for (; i < width; ++i) dst[i] = alpha[i] << 8; - alpha += alpha_stride; - dst += dst_stride; - } -} - -static int ExtractAlpha(const uint8_t* argb, int argb_stride, - int width, int height, - uint8_t* alpha, int alpha_stride) { - // alpha_and stores an 'and' operation of all the alpha[] values. The final - // value is not 0xff if any of the alpha[] is not equal to 0xff. - uint32_t alpha_and = 0xff; - int i, j; - const __m128i a_mask = _mm_set1_epi32(0xffu); // to preserve alpha - const __m128i all_0xff = _mm_set_epi32(0, 0, ~0u, ~0u); - __m128i all_alphas = all_0xff; - - // We must be able to access 3 extra bytes after the last written byte - // 'src[4 * width - 4]', because we don't know if alpha is the first or the - // last byte of the quadruplet. - const int limit = (width - 1) & ~7; - - for (j = 0; j < height; ++j) { - const __m128i* src = (const __m128i*)argb; - for (i = 0; i < limit; i += 8) { - // load 32 argb bytes - const __m128i a0 = _mm_loadu_si128(src + 0); - const __m128i a1 = _mm_loadu_si128(src + 1); - const __m128i b0 = _mm_and_si128(a0, a_mask); - const __m128i b1 = _mm_and_si128(a1, a_mask); - const __m128i c0 = _mm_packs_epi32(b0, b1); - const __m128i d0 = _mm_packus_epi16(c0, c0); - // store - _mm_storel_epi64((__m128i*)&alpha[i], d0); - // accumulate eight alpha 'and' in parallel - all_alphas = _mm_and_si128(all_alphas, d0); - src += 2; - } - for (; i < width; ++i) { - const uint32_t alpha_value = argb[4 * i]; - alpha[i] = alpha_value; - alpha_and &= alpha_value; - } - argb += argb_stride; - alpha += alpha_stride; - } - // Combine the eight alpha 'and' into a 8-bit mask. - alpha_and &= _mm_movemask_epi8(_mm_cmpeq_epi8(all_alphas, all_0xff)); - return (alpha_and == 0xff); -} - -//------------------------------------------------------------------------------ -// Non-dither premultiplied modes - -#define MULTIPLIER(a) ((a) * 0x8081) -#define PREMULTIPLY(x, m) (((x) * (m)) >> 23) - -// We can't use a 'const int' for the SHUFFLE value, because it has to be an -// immediate in the _mm_shufflexx_epi16() instruction. We really a macro here. -#define APPLY_ALPHA(RGBX, SHUFFLE, MASK, MULT) do { \ - const __m128i argb0 = _mm_loadl_epi64((__m128i*)&(RGBX)); \ - const __m128i argb1 = _mm_unpacklo_epi8(argb0, zero); \ - const __m128i alpha0 = _mm_and_si128(argb1, MASK); \ - const __m128i alpha1 = _mm_shufflelo_epi16(alpha0, SHUFFLE); \ - const __m128i alpha2 = _mm_shufflehi_epi16(alpha1, SHUFFLE); \ - /* alpha2 = [0 a0 a0 a0][0 a1 a1 a1] */ \ - const __m128i scale0 = _mm_mullo_epi16(alpha2, MULT); \ - const __m128i scale1 = _mm_mulhi_epu16(alpha2, MULT); \ - const __m128i argb2 = _mm_mulhi_epu16(argb1, scale0); \ - const __m128i argb3 = _mm_mullo_epi16(argb1, scale1); \ - const __m128i argb4 = _mm_adds_epu16(argb2, argb3); \ - const __m128i argb5 = _mm_srli_epi16(argb4, 7); \ - const __m128i argb6 = _mm_or_si128(argb5, alpha0); \ - const __m128i argb7 = _mm_packus_epi16(argb6, zero); \ - _mm_storel_epi64((__m128i*)&(RGBX), argb7); \ -} while (0) - -static void ApplyAlphaMultiply(uint8_t* rgba, int alpha_first, - int w, int h, int stride) { - const __m128i zero = _mm_setzero_si128(); - const int kSpan = 2; - const int w2 = w & ~(kSpan - 1); - while (h-- > 0) { - uint32_t* const rgbx = (uint32_t*)rgba; - int i; - if (!alpha_first) { - const __m128i kMask = _mm_set_epi16(0xff, 0, 0, 0, 0xff, 0, 0, 0); - const __m128i kMult = - _mm_set_epi16(0, 0x8081, 0x8081, 0x8081, 0, 0x8081, 0x8081, 0x8081); - for (i = 0; i < w2; i += kSpan) { - APPLY_ALPHA(rgbx[i], _MM_SHUFFLE(0, 3, 3, 3), kMask, kMult); - } - } else { - const __m128i kMask = _mm_set_epi16(0, 0, 0, 0xff, 0, 0, 0, 0xff); - const __m128i kMult = - _mm_set_epi16(0x8081, 0x8081, 0x8081, 0, 0x8081, 0x8081, 0x8081, 0); - for (i = 0; i < w2; i += kSpan) { - APPLY_ALPHA(rgbx[i], _MM_SHUFFLE(0, 0, 0, 3), kMask, kMult); - } - } - // Finish with left-overs. - for (; i < w; ++i) { - uint8_t* const rgb = rgba + (alpha_first ? 1 : 0); - const uint8_t* const alpha = rgba + (alpha_first ? 0 : 3); - const uint32_t a = alpha[4 * i]; - if (a != 0xff) { - const uint32_t mult = MULTIPLIER(a); - rgb[4 * i + 0] = PREMULTIPLY(rgb[4 * i + 0], mult); - rgb[4 * i + 1] = PREMULTIPLY(rgb[4 * i + 1], mult); - rgb[4 * i + 2] = PREMULTIPLY(rgb[4 * i + 2], mult); - } - } - rgba += stride; - } -} -#undef MULTIPLIER -#undef PREMULTIPLY - -// ----------------------------------------------------------------------------- -// Apply alpha value to rows - -// We use: kINV255 = (1 << 24) / 255 = 0x010101 -// So: a * kINV255 = (a << 16) | [(a << 8) | a] -// -> _mm_mulhi_epu16() takes care of the (a<<16) part, -// and _mm_mullo_epu16(a * 0x0101,...) takes care of the "(a << 8) | a" one. - -static void MultARGBRow(uint32_t* const ptr, int width, int inverse) { - int x = 0; - if (!inverse) { - const int kSpan = 2; - const __m128i zero = _mm_setzero_si128(); - const __m128i kRound = - _mm_set_epi16(0, 1 << 7, 1 << 7, 1 << 7, 0, 1 << 7, 1 << 7, 1 << 7); - const __m128i kMult = - _mm_set_epi16(0, 0x0101, 0x0101, 0x0101, 0, 0x0101, 0x0101, 0x0101); - const __m128i kOne64 = _mm_set_epi16(1u << 8, 0, 0, 0, 1u << 8, 0, 0, 0); - const int w2 = width & ~(kSpan - 1); - for (x = 0; x < w2; x += kSpan) { - const __m128i argb0 = _mm_loadl_epi64((__m128i*)&ptr[x]); - const __m128i argb1 = _mm_unpacklo_epi8(argb0, zero); - const __m128i tmp0 = _mm_shufflelo_epi16(argb1, _MM_SHUFFLE(3, 3, 3, 3)); - const __m128i tmp1 = _mm_shufflehi_epi16(tmp0, _MM_SHUFFLE(3, 3, 3, 3)); - const __m128i tmp2 = _mm_srli_epi64(tmp1, 16); - const __m128i scale0 = _mm_mullo_epi16(tmp1, kMult); - const __m128i scale1 = _mm_or_si128(tmp2, kOne64); - const __m128i argb2 = _mm_mulhi_epu16(argb1, scale0); - const __m128i argb3 = _mm_mullo_epi16(argb1, scale1); - const __m128i argb4 = _mm_adds_epu16(argb2, argb3); - const __m128i argb5 = _mm_adds_epu16(argb4, kRound); - const __m128i argb6 = _mm_srli_epi16(argb5, 8); - const __m128i argb7 = _mm_packus_epi16(argb6, zero); - _mm_storel_epi64((__m128i*)&ptr[x], argb7); - } - } - width -= x; - if (width > 0) WebPMultARGBRowC(ptr + x, width, inverse); -} - -static void MultRow(uint8_t* const ptr, const uint8_t* const alpha, - int width, int inverse) { - int x = 0; - if (!inverse) { - const int kSpan = 8; - const __m128i zero = _mm_setzero_si128(); - const __m128i kRound = _mm_set1_epi16(1 << 7); - const int w2 = width & ~(kSpan - 1); - for (x = 0; x < w2; x += kSpan) { - const __m128i v0 = _mm_loadl_epi64((__m128i*)&ptr[x]); - const __m128i v1 = _mm_unpacklo_epi8(v0, zero); - const __m128i alpha0 = _mm_loadl_epi64((const __m128i*)&alpha[x]); - const __m128i alpha1 = _mm_unpacklo_epi8(alpha0, zero); - const __m128i alpha2 = _mm_unpacklo_epi8(alpha0, alpha0); - const __m128i v2 = _mm_mulhi_epu16(v1, alpha2); - const __m128i v3 = _mm_mullo_epi16(v1, alpha1); - const __m128i v4 = _mm_adds_epu16(v2, v3); - const __m128i v5 = _mm_adds_epu16(v4, kRound); - const __m128i v6 = _mm_srli_epi16(v5, 8); - const __m128i v7 = _mm_packus_epi16(v6, zero); - _mm_storel_epi64((__m128i*)&ptr[x], v7); - } - } - width -= x; - if (width > 0) WebPMultRowC(ptr + x, alpha + x, width, inverse); -} - -//------------------------------------------------------------------------------ -// Entry point - -extern void WebPInitAlphaProcessingSSE2(void); - -WEBP_TSAN_IGNORE_FUNCTION void WebPInitAlphaProcessingSSE2(void) { - WebPMultARGBRow = MultARGBRow; - WebPMultRow = MultRow; - WebPApplyAlphaMultiply = ApplyAlphaMultiply; - WebPDispatchAlpha = DispatchAlpha; - WebPDispatchAlphaToGreen = DispatchAlphaToGreen; - WebPExtractAlpha = ExtractAlpha; -} - -#else // !WEBP_USE_SSE2 - -WEBP_DSP_INIT_STUB(WebPInitAlphaProcessingSSE2) - -#endif // WEBP_USE_SSE2 -- cgit v1.2.3