diff options
Diffstat (limited to 'drivers/webp/dsp/lossless_enc_neon.c')
| -rw-r--r-- | drivers/webp/dsp/lossless_enc_neon.c | 143 |
1 files changed, 0 insertions, 143 deletions
diff --git a/drivers/webp/dsp/lossless_enc_neon.c b/drivers/webp/dsp/lossless_enc_neon.c deleted file mode 100644 index 4c56f2594b..0000000000 --- a/drivers/webp/dsp/lossless_enc_neon.c +++ /dev/null @@ -1,143 +0,0 @@ -// Copyright 2015 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. -// ----------------------------------------------------------------------------- -// -// NEON variant of methods for lossless encoder -// -// Author: Skal (pascal.massimino@gmail.com) - -#include "./dsp.h" - -#if defined(WEBP_USE_NEON) - -#include <arm_neon.h> - -#include "./lossless.h" -#include "./neon.h" - -//------------------------------------------------------------------------------ -// Subtract-Green Transform - -// vtbl?_u8 are marked unavailable for iOS arm64 with Xcode < 6.3, use -// non-standard versions there. -#if defined(__APPLE__) && defined(__aarch64__) && \ - defined(__apple_build_version__) && (__apple_build_version__< 6020037) -#define USE_VTBLQ -#endif - -#ifdef USE_VTBLQ -// 255 = byte will be zeroed -static const uint8_t kGreenShuffle[16] = { - 1, 255, 1, 255, 5, 255, 5, 255, 9, 255, 9, 255, 13, 255, 13, 255 -}; - -static WEBP_INLINE uint8x16_t DoGreenShuffle(const uint8x16_t argb, - const uint8x16_t shuffle) { - return vcombine_u8(vtbl1q_u8(argb, vget_low_u8(shuffle)), - vtbl1q_u8(argb, vget_high_u8(shuffle))); -} -#else // !USE_VTBLQ -// 255 = byte will be zeroed -static const uint8_t kGreenShuffle[8] = { 1, 255, 1, 255, 5, 255, 5, 255 }; - -static WEBP_INLINE uint8x16_t DoGreenShuffle(const uint8x16_t argb, - const uint8x8_t shuffle) { - return vcombine_u8(vtbl1_u8(vget_low_u8(argb), shuffle), - vtbl1_u8(vget_high_u8(argb), shuffle)); -} -#endif // USE_VTBLQ - -static void SubtractGreenFromBlueAndRed(uint32_t* argb_data, int num_pixels) { - const uint32_t* const end = argb_data + (num_pixels & ~3); -#ifdef USE_VTBLQ - const uint8x16_t shuffle = vld1q_u8(kGreenShuffle); -#else - const uint8x8_t shuffle = vld1_u8(kGreenShuffle); -#endif - for (; argb_data < end; argb_data += 4) { - const uint8x16_t argb = vld1q_u8((uint8_t*)argb_data); - const uint8x16_t greens = DoGreenShuffle(argb, shuffle); - vst1q_u8((uint8_t*)argb_data, vsubq_u8(argb, greens)); - } - // fallthrough and finish off with plain-C - VP8LSubtractGreenFromBlueAndRed_C(argb_data, num_pixels & 3); -} - -//------------------------------------------------------------------------------ -// Color Transform - -static void TransformColor(const VP8LMultipliers* const m, - uint32_t* argb_data, int num_pixels) { - // sign-extended multiplying constants, pre-shifted by 6. -#define CST(X) (((int16_t)(m->X << 8)) >> 6) - const int16_t rb[8] = { - CST(green_to_blue_), CST(green_to_red_), - CST(green_to_blue_), CST(green_to_red_), - CST(green_to_blue_), CST(green_to_red_), - CST(green_to_blue_), CST(green_to_red_) - }; - const int16x8_t mults_rb = vld1q_s16(rb); - const int16_t b2[8] = { - 0, CST(red_to_blue_), 0, CST(red_to_blue_), - 0, CST(red_to_blue_), 0, CST(red_to_blue_), - }; - const int16x8_t mults_b2 = vld1q_s16(b2); -#undef CST -#ifdef USE_VTBLQ - static const uint8_t kg0g0[16] = { - 255, 1, 255, 1, 255, 5, 255, 5, 255, 9, 255, 9, 255, 13, 255, 13 - }; - const uint8x16_t shuffle = vld1q_u8(kg0g0); -#else - static const uint8_t k0g0g[8] = { 255, 1, 255, 1, 255, 5, 255, 5 }; - const uint8x8_t shuffle = vld1_u8(k0g0g); -#endif - const uint32x4_t mask_rb = vdupq_n_u32(0x00ff00ffu); // red-blue masks - int i; - for (i = 0; i + 4 <= num_pixels; i += 4) { - const uint8x16_t in = vld1q_u8((uint8_t*)(argb_data + i)); - // 0 g 0 g - const uint8x16_t greens = DoGreenShuffle(in, shuffle); - // x dr x db1 - const int16x8_t A = vqdmulhq_s16(vreinterpretq_s16_u8(greens), mults_rb); - // r 0 b 0 - const int16x8_t B = vshlq_n_s16(vreinterpretq_s16_u8(in), 8); - // x db2 0 0 - const int16x8_t C = vqdmulhq_s16(B, mults_b2); - // 0 0 x db2 - const uint32x4_t D = vshrq_n_u32(vreinterpretq_u32_s16(C), 16); - // x dr x db - const int8x16_t E = vaddq_s8(vreinterpretq_s8_u32(D), - vreinterpretq_s8_s16(A)); - // 0 dr 0 db - const uint32x4_t F = vandq_u32(vreinterpretq_u32_s8(E), mask_rb); - const int8x16_t out = vsubq_s8(vreinterpretq_s8_u8(in), - vreinterpretq_s8_u32(F)); - vst1q_s8((int8_t*)(argb_data + i), out); - } - // fallthrough and finish off with plain-C - VP8LTransformColor_C(m, argb_data + i, num_pixels - i); -} - -#undef USE_VTBLQ - -//------------------------------------------------------------------------------ -// Entry point - -extern void VP8LEncDspInitNEON(void); - -WEBP_TSAN_IGNORE_FUNCTION void VP8LEncDspInitNEON(void) { - VP8LSubtractGreenFromBlueAndRed = SubtractGreenFromBlueAndRed; - VP8LTransformColor = TransformColor; -} - -#else // !WEBP_USE_NEON - -WEBP_DSP_INIT_STUB(VP8LEncDspInitNEON) - -#endif // WEBP_USE_NEON |