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Diffstat (limited to 'src/main/jni/libwebp/dsp/lossless_neon.c')
-rw-r--r--src/main/jni/libwebp/dsp/lossless_neon.c332
1 files changed, 0 insertions, 332 deletions
diff --git a/src/main/jni/libwebp/dsp/lossless_neon.c b/src/main/jni/libwebp/dsp/lossless_neon.c
deleted file mode 100644
index 987767b54..000000000
--- a/src/main/jni/libwebp/dsp/lossless_neon.c
+++ /dev/null
@@ -1,332 +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.
-// -----------------------------------------------------------------------------
-//
-// NEON variant of methods for lossless decoder
-//
-// Author: Skal (pascal.massimino@gmail.com)
-
-#include "./dsp.h"
-
-#if defined(WEBP_USE_NEON)
-
-#include <arm_neon.h>
-
-#include "./lossless.h"
-#include "./neon.h"
-
-//------------------------------------------------------------------------------
-// Colorspace conversion functions
-
-#if !defined(WORK_AROUND_GCC)
-// gcc 4.6.0 had some trouble (NDK-r9) with this code. We only use it for
-// gcc-4.8.x at least.
-static void ConvertBGRAToRGBA(const uint32_t* src,
- int num_pixels, uint8_t* dst) {
- const uint32_t* const end = src + (num_pixels & ~15);
- for (; src < end; src += 16) {
- uint8x16x4_t pixel = vld4q_u8((uint8_t*)src);
- // swap B and R. (VSWP d0,d2 has no intrinsics equivalent!)
- const uint8x16_t tmp = pixel.val[0];
- pixel.val[0] = pixel.val[2];
- pixel.val[2] = tmp;
- vst4q_u8(dst, pixel);
- dst += 64;
- }
- VP8LConvertBGRAToRGBA_C(src, num_pixels & 15, dst); // left-overs
-}
-
-static void ConvertBGRAToBGR(const uint32_t* src,
- int num_pixels, uint8_t* dst) {
- const uint32_t* const end = src + (num_pixels & ~15);
- for (; src < end; src += 16) {
- const uint8x16x4_t pixel = vld4q_u8((uint8_t*)src);
- const uint8x16x3_t tmp = { { pixel.val[0], pixel.val[1], pixel.val[2] } };
- vst3q_u8(dst, tmp);
- dst += 48;
- }
- VP8LConvertBGRAToBGR_C(src, num_pixels & 15, dst); // left-overs
-}
-
-static void ConvertBGRAToRGB(const uint32_t* src,
- int num_pixels, uint8_t* dst) {
- const uint32_t* const end = src + (num_pixels & ~15);
- for (; src < end; src += 16) {
- const uint8x16x4_t pixel = vld4q_u8((uint8_t*)src);
- const uint8x16x3_t tmp = { { pixel.val[2], pixel.val[1], pixel.val[0] } };
- vst3q_u8(dst, tmp);
- dst += 48;
- }
- VP8LConvertBGRAToRGB_C(src, num_pixels & 15, dst); // left-overs
-}
-
-#else // WORK_AROUND_GCC
-
-// gcc-4.6.0 fallback
-
-static const uint8_t kRGBAShuffle[8] = { 2, 1, 0, 3, 6, 5, 4, 7 };
-
-static void ConvertBGRAToRGBA(const uint32_t* src,
- int num_pixels, uint8_t* dst) {
- const uint32_t* const end = src + (num_pixels & ~1);
- const uint8x8_t shuffle = vld1_u8(kRGBAShuffle);
- for (; src < end; src += 2) {
- const uint8x8_t pixels = vld1_u8((uint8_t*)src);
- vst1_u8(dst, vtbl1_u8(pixels, shuffle));
- dst += 8;
- }
- VP8LConvertBGRAToRGBA_C(src, num_pixels & 1, dst); // left-overs
-}
-
-static const uint8_t kBGRShuffle[3][8] = {
- { 0, 1, 2, 4, 5, 6, 8, 9 },
- { 10, 12, 13, 14, 16, 17, 18, 20 },
- { 21, 22, 24, 25, 26, 28, 29, 30 }
-};
-
-static void ConvertBGRAToBGR(const uint32_t* src,
- int num_pixels, uint8_t* dst) {
- const uint32_t* const end = src + (num_pixels & ~7);
- const uint8x8_t shuffle0 = vld1_u8(kBGRShuffle[0]);
- const uint8x8_t shuffle1 = vld1_u8(kBGRShuffle[1]);
- const uint8x8_t shuffle2 = vld1_u8(kBGRShuffle[2]);
- for (; src < end; src += 8) {
- uint8x8x4_t pixels;
- INIT_VECTOR4(pixels,
- vld1_u8((const uint8_t*)(src + 0)),
- vld1_u8((const uint8_t*)(src + 2)),
- vld1_u8((const uint8_t*)(src + 4)),
- vld1_u8((const uint8_t*)(src + 6)));
- vst1_u8(dst + 0, vtbl4_u8(pixels, shuffle0));
- vst1_u8(dst + 8, vtbl4_u8(pixels, shuffle1));
- vst1_u8(dst + 16, vtbl4_u8(pixels, shuffle2));
- dst += 8 * 3;
- }
- VP8LConvertBGRAToBGR_C(src, num_pixels & 7, dst); // left-overs
-}
-
-static const uint8_t kRGBShuffle[3][8] = {
- { 2, 1, 0, 6, 5, 4, 10, 9 },
- { 8, 14, 13, 12, 18, 17, 16, 22 },
- { 21, 20, 26, 25, 24, 30, 29, 28 }
-};
-
-static void ConvertBGRAToRGB(const uint32_t* src,
- int num_pixels, uint8_t* dst) {
- const uint32_t* const end = src + (num_pixels & ~7);
- const uint8x8_t shuffle0 = vld1_u8(kRGBShuffle[0]);
- const uint8x8_t shuffle1 = vld1_u8(kRGBShuffle[1]);
- const uint8x8_t shuffle2 = vld1_u8(kRGBShuffle[2]);
- for (; src < end; src += 8) {
- uint8x8x4_t pixels;
- INIT_VECTOR4(pixels,
- vld1_u8((const uint8_t*)(src + 0)),
- vld1_u8((const uint8_t*)(src + 2)),
- vld1_u8((const uint8_t*)(src + 4)),
- vld1_u8((const uint8_t*)(src + 6)));
- vst1_u8(dst + 0, vtbl4_u8(pixels, shuffle0));
- vst1_u8(dst + 8, vtbl4_u8(pixels, shuffle1));
- vst1_u8(dst + 16, vtbl4_u8(pixels, shuffle2));
- dst += 8 * 3;
- }
- VP8LConvertBGRAToRGB_C(src, num_pixels & 7, dst); // left-overs
-}
-
-#endif // !WORK_AROUND_GCC
-
-//------------------------------------------------------------------------------
-
-#ifdef USE_INTRINSICS
-
-static WEBP_INLINE uint32_t Average2(const uint32_t* const a,
- const uint32_t* const b) {
- const uint8x8_t a0 = vreinterpret_u8_u64(vcreate_u64(*a));
- const uint8x8_t b0 = vreinterpret_u8_u64(vcreate_u64(*b));
- const uint8x8_t avg = vhadd_u8(a0, b0);
- return vget_lane_u32(vreinterpret_u32_u8(avg), 0);
-}
-
-static WEBP_INLINE uint32_t Average3(const uint32_t* const a,
- const uint32_t* const b,
- const uint32_t* const c) {
- const uint8x8_t a0 = vreinterpret_u8_u64(vcreate_u64(*a));
- const uint8x8_t b0 = vreinterpret_u8_u64(vcreate_u64(*b));
- const uint8x8_t c0 = vreinterpret_u8_u64(vcreate_u64(*c));
- const uint8x8_t avg1 = vhadd_u8(a0, c0);
- const uint8x8_t avg2 = vhadd_u8(avg1, b0);
- return vget_lane_u32(vreinterpret_u32_u8(avg2), 0);
-}
-
-static WEBP_INLINE uint32_t Average4(const uint32_t* const a,
- const uint32_t* const b,
- const uint32_t* const c,
- const uint32_t* const d) {
- const uint8x8_t a0 = vreinterpret_u8_u64(vcreate_u64(*a));
- const uint8x8_t b0 = vreinterpret_u8_u64(vcreate_u64(*b));
- const uint8x8_t c0 = vreinterpret_u8_u64(vcreate_u64(*c));
- const uint8x8_t d0 = vreinterpret_u8_u64(vcreate_u64(*d));
- const uint8x8_t avg1 = vhadd_u8(a0, b0);
- const uint8x8_t avg2 = vhadd_u8(c0, d0);
- const uint8x8_t avg3 = vhadd_u8(avg1, avg2);
- return vget_lane_u32(vreinterpret_u32_u8(avg3), 0);
-}
-
-static uint32_t Predictor5(uint32_t left, const uint32_t* const top) {
- return Average3(&left, top + 0, top + 1);
-}
-
-static uint32_t Predictor6(uint32_t left, const uint32_t* const top) {
- return Average2(&left, top - 1);
-}
-
-static uint32_t Predictor7(uint32_t left, const uint32_t* const top) {
- return Average2(&left, top + 0);
-}
-
-static uint32_t Predictor8(uint32_t left, const uint32_t* const top) {
- (void)left;
- return Average2(top - 1, top + 0);
-}
-
-static uint32_t Predictor9(uint32_t left, const uint32_t* const top) {
- (void)left;
- return Average2(top + 0, top + 1);
-}
-
-static uint32_t Predictor10(uint32_t left, const uint32_t* const top) {
- return Average4(&left, top - 1, top + 0, top + 1);
-}
-
-//------------------------------------------------------------------------------
-
-static WEBP_INLINE uint32_t Select(const uint32_t* const c0,
- const uint32_t* const c1,
- const uint32_t* const c2) {
- const uint8x8_t p0 = vreinterpret_u8_u64(vcreate_u64(*c0));
- const uint8x8_t p1 = vreinterpret_u8_u64(vcreate_u64(*c1));
- const uint8x8_t p2 = vreinterpret_u8_u64(vcreate_u64(*c2));
- const uint8x8_t bc = vabd_u8(p1, p2); // |b-c|
- const uint8x8_t ac = vabd_u8(p0, p2); // |a-c|
- const int16x4_t sum_bc = vreinterpret_s16_u16(vpaddl_u8(bc));
- const int16x4_t sum_ac = vreinterpret_s16_u16(vpaddl_u8(ac));
- const int32x2_t diff = vpaddl_s16(vsub_s16(sum_bc, sum_ac));
- const int32_t pa_minus_pb = vget_lane_s32(diff, 0);
- return (pa_minus_pb <= 0) ? *c0 : *c1;
-}
-
-static uint32_t Predictor11(uint32_t left, const uint32_t* const top) {
- return Select(top + 0, &left, top - 1);
-}
-
-static WEBP_INLINE uint32_t ClampedAddSubtractFull(const uint32_t* const c0,
- const uint32_t* const c1,
- const uint32_t* const c2) {
- const uint8x8_t p0 = vreinterpret_u8_u64(vcreate_u64(*c0));
- const uint8x8_t p1 = vreinterpret_u8_u64(vcreate_u64(*c1));
- const uint8x8_t p2 = vreinterpret_u8_u64(vcreate_u64(*c2));
- const uint16x8_t sum0 = vaddl_u8(p0, p1); // add and widen
- const uint16x8_t sum1 = vqsubq_u16(sum0, vmovl_u8(p2)); // widen and subtract
- const uint8x8_t out = vqmovn_u16(sum1); // narrow and clamp
- return vget_lane_u32(vreinterpret_u32_u8(out), 0);
-}
-
-static uint32_t Predictor12(uint32_t left, const uint32_t* const top) {
- return ClampedAddSubtractFull(&left, top + 0, top - 1);
-}
-
-static WEBP_INLINE uint32_t ClampedAddSubtractHalf(const uint32_t* const c0,
- const uint32_t* const c1,
- const uint32_t* const c2) {
- const uint8x8_t p0 = vreinterpret_u8_u64(vcreate_u64(*c0));
- const uint8x8_t p1 = vreinterpret_u8_u64(vcreate_u64(*c1));
- const uint8x8_t p2 = vreinterpret_u8_u64(vcreate_u64(*c2));
- const uint8x8_t avg = vhadd_u8(p0, p1); // Average(c0,c1)
- const uint8x8_t ab = vshr_n_u8(vqsub_u8(avg, p2), 1); // (a-b)>>1 saturated
- const uint8x8_t ba = vshr_n_u8(vqsub_u8(p2, avg), 1); // (b-a)>>1 saturated
- const uint8x8_t out = vqsub_u8(vqadd_u8(avg, ab), ba);
- return vget_lane_u32(vreinterpret_u32_u8(out), 0);
-}
-
-static uint32_t Predictor13(uint32_t left, const uint32_t* const top) {
- return ClampedAddSubtractHalf(&left, top + 0, top - 1);
-}
-
-//------------------------------------------------------------------------------
-// Subtract-Green Transform
-
-// vtbl? are unavailable in iOS/arm64 builds.
-#if !defined(__aarch64__)
-
-// 255 = byte will be zero'd
-static const uint8_t kGreenShuffle[8] = { 1, 255, 1, 255, 5, 255, 5, 255 };
-
-static void SubtractGreenFromBlueAndRed(uint32_t* argb_data, int num_pixels) {
- const uint32_t* const end = argb_data + (num_pixels & ~3);
- const uint8x8_t shuffle = vld1_u8(kGreenShuffle);
- for (; argb_data < end; argb_data += 4) {
- const uint8x16_t argb = vld1q_u8((uint8_t*)argb_data);
- const uint8x16_t greens =
- vcombine_u8(vtbl1_u8(vget_low_u8(argb), shuffle),
- vtbl1_u8(vget_high_u8(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);
-}
-
-static void AddGreenToBlueAndRed(uint32_t* argb_data, int num_pixels) {
- const uint32_t* const end = argb_data + (num_pixels & ~3);
- const uint8x8_t shuffle = vld1_u8(kGreenShuffle);
- for (; argb_data < end; argb_data += 4) {
- const uint8x16_t argb = vld1q_u8((uint8_t*)argb_data);
- const uint8x16_t greens =
- vcombine_u8(vtbl1_u8(vget_low_u8(argb), shuffle),
- vtbl1_u8(vget_high_u8(argb), shuffle));
- vst1q_u8((uint8_t*)argb_data, vaddq_u8(argb, greens));
- }
- // fallthrough and finish off with plain-C
- VP8LAddGreenToBlueAndRed_C(argb_data, num_pixels & 3);
-}
-
-#endif // !__aarch64__
-
-#endif // USE_INTRINSICS
-
-#endif // WEBP_USE_NEON
-
-//------------------------------------------------------------------------------
-
-extern void VP8LDspInitNEON(void);
-
-void VP8LDspInitNEON(void) {
-#if defined(WEBP_USE_NEON)
- VP8LConvertBGRAToRGBA = ConvertBGRAToRGBA;
- VP8LConvertBGRAToBGR = ConvertBGRAToBGR;
- VP8LConvertBGRAToRGB = ConvertBGRAToRGB;
-
-#ifdef USE_INTRINSICS
- 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;
-
-#if !defined(__aarch64__)
- VP8LSubtractGreenFromBlueAndRed = SubtractGreenFromBlueAndRed;
- VP8LAddGreenToBlueAndRed = AddGreenToBlueAndRed;
-#endif
-#endif
-
-#endif // WEBP_USE_NEON
-}
-
-//------------------------------------------------------------------------------
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-13 01:53:23 +0000