// 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. // ----------------------------------------------------------------------------- // // ARGB making functions (SSE2 version). // // Author: Skal (pascal.massimino@gmail.com) #include "./dsp.h" #if defined(WEBP_USE_SSE2) #include <assert.h> #include <emmintrin.h> #include <string.h> static WEBP_INLINE uint32_t MakeARGB32(int a, int r, int g, int b) { return (((uint32_t)a << 24) | (r << 16) | (g << 8) | b); } static void PackARGB(const uint8_t* a, const uint8_t* r, const uint8_t* g, const uint8_t* b, int len, uint32_t* out) { if (g == r + 1) { // RGBA input order. Need to swap R and B. int i = 0; const int len_max = len & ~3; // max length processed in main loop const __m128i red_blue_mask = _mm_set1_epi32(0x00ff00ffu); assert(b == r + 2); assert(a == r + 3); for (; i < len_max; i += 4) { const __m128i A = _mm_loadu_si128((const __m128i*)(r + 4 * i)); const __m128i B = _mm_and_si128(A, red_blue_mask); // R 0 B 0 const __m128i C = _mm_andnot_si128(red_blue_mask, A); // 0 G 0 A const __m128i D = _mm_shufflelo_epi16(B, _MM_SHUFFLE(2, 3, 0, 1)); const __m128i E = _mm_shufflehi_epi16(D, _MM_SHUFFLE(2, 3, 0, 1)); const __m128i F = _mm_or_si128(E, C); _mm_storeu_si128((__m128i*)(out + i), F); } for (; i < len; ++i) { out[i] = MakeARGB32(a[4 * i], r[4 * i], g[4 * i], b[4 * i]); } } else { assert(g == b + 1); assert(r == b + 2); assert(a == b + 3); memcpy(out, b, len * 4); } } //------------------------------------------------------------------------------ // Entry point extern void VP8EncDspARGBInitSSE2(void); WEBP_TSAN_IGNORE_FUNCTION void VP8EncDspARGBInitSSE2(void) { VP8PackARGB = PackARGB; } #else // !WEBP_USE_SSE2 WEBP_DSP_INIT_STUB(VP8EncDspARGBInitSSE2) #endif // WEBP_USE_SSE2