mirror of https://github.com/opencv/opencv.git
Open Source Computer Vision Library
https://opencv.org/
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
67 lines
2.2 KiB
67 lines
2.2 KiB
// 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
|
|
|