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-rw-r--r--src/3rdparty/libwebp/src/dsp/lossless_neon.c216
1 files changed, 64 insertions, 152 deletions
diff --git a/src/3rdparty/libwebp/src/dsp/lossless_neon.c b/src/3rdparty/libwebp/src/dsp/lossless_neon.c
index 8c82b19..6faccb8 100644
--- a/src/3rdparty/libwebp/src/dsp/lossless_neon.c
+++ b/src/3rdparty/libwebp/src/dsp/lossless_neon.c
@@ -140,123 +140,6 @@ static void ConvertBGRAToRGB(const uint32_t* src,
#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?_u8 are marked unavailable for iOS arm64 with Xcode < 6.3, use
@@ -288,7 +171,7 @@ static WEBP_INLINE uint8x16_t DoGreenShuffle(const uint8x16_t argb,
}
#endif // USE_VTBLQ
-static void SubtractGreenFromBlueAndRed(uint32_t* argb_data, int num_pixels) {
+static void AddGreenToBlueAndRed(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);
@@ -298,60 +181,89 @@ static void SubtractGreenFromBlueAndRed(uint32_t* argb_data, int num_pixels) {
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));
+ vst1q_u8((uint8_t*)argb_data, vaddq_u8(argb, greens));
}
// fallthrough and finish off with plain-C
- VP8LSubtractGreenFromBlueAndRed_C(argb_data, num_pixels & 3);
+ VP8LAddGreenToBlueAndRed_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);
+//------------------------------------------------------------------------------
+// Color Transform
+
+static void TransformColorInverse(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
- const uint8x16_t shuffle = vld1q_u8(kGreenShuffle);
+ 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
- const uint8x8_t shuffle = vld1_u8(kGreenShuffle);
+ static const uint8_t k0g0g[8] = { 255, 1, 255, 1, 255, 5, 255, 5 };
+ const uint8x8_t shuffle = vld1_u8(k0g0g);
#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, vaddq_u8(argb, greens));
+ const uint32x4_t mask_ag = vdupq_n_u32(0xff00ff00u);
+ int i;
+ for (i = 0; i + 4 <= num_pixels; i += 4) {
+ const uint8x16_t in = vld1q_u8((uint8_t*)(argb_data + i));
+ const uint32x4_t a0g0 = vandq_u32(vreinterpretq_u32_u8(in), mask_ag);
+ // 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);
+ // x r' x b'
+ const int8x16_t B = vaddq_s8(vreinterpretq_s8_u8(in),
+ vreinterpretq_s8_s16(A));
+ // r' 0 b' 0
+ const int16x8_t C = vshlq_n_s16(vreinterpretq_s16_s8(B), 8);
+ // x db2 0 0
+ const int16x8_t D = vqdmulhq_s16(C, mults_b2);
+ // 0 x db2 0
+ const uint32x4_t E = vshrq_n_u32(vreinterpretq_u32_s16(D), 8);
+ // r' x b'' 0
+ const int8x16_t F = vaddq_s8(vreinterpretq_s8_u32(E),
+ vreinterpretq_s8_s16(C));
+ // 0 r' 0 b''
+ const uint16x8_t G = vshrq_n_u16(vreinterpretq_u16_s8(F), 8);
+ const uint32x4_t out = vorrq_u32(vreinterpretq_u32_u16(G), a0g0);
+ vst1q_u32(argb_data + i, out);
}
- // fallthrough and finish off with plain-C
- VP8LAddGreenToBlueAndRed_C(argb_data, num_pixels & 3);
+ // Fall-back to C-version for left-overs.
+ VP8LTransformColorInverse_C(m, argb_data + i, num_pixels - i);
}
#undef USE_VTBLQ
-#endif // USE_INTRINSICS
-
-#endif // WEBP_USE_NEON
-
//------------------------------------------------------------------------------
+// Entry point
extern void VP8LDspInitNEON(void);
-void VP8LDspInitNEON(void) {
-#if defined(WEBP_USE_NEON)
+WEBP_TSAN_IGNORE_FUNCTION void VP8LDspInitNEON(void) {
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;
-
- VP8LSubtractGreenFromBlueAndRed = SubtractGreenFromBlueAndRed;
VP8LAddGreenToBlueAndRed = AddGreenToBlueAndRed;
-#endif
-
-#endif // WEBP_USE_NEON
+ VP8LTransformColorInverse = TransformColorInverse;
}
-//------------------------------------------------------------------------------
+#else // !WEBP_USE_NEON
+
+WEBP_DSP_INIT_STUB(VP8LDspInitNEON)
+
+#endif // WEBP_USE_NEON
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-21 07:32:40 +0000