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-rw-r--r--src/3rdparty/libwebp/src/dsp/alpha_processing_sse2.c88
1 files changed, 73 insertions, 15 deletions
diff --git a/src/3rdparty/libwebp/src/dsp/alpha_processing_sse2.c b/src/3rdparty/libwebp/src/dsp/alpha_processing_sse2.c
index 83dc559..7658700 100644
--- a/src/3rdparty/libwebp/src/dsp/alpha_processing_sse2.c
+++ b/src/3rdparty/libwebp/src/dsp/alpha_processing_sse2.c
@@ -11,16 +11,16 @@
//
// Author: Skal (pascal.massimino@gmail.com)
-#include "./dsp.h"
+#include "src/dsp/dsp.h"
#if defined(WEBP_USE_SSE2)
#include <emmintrin.h>
//------------------------------------------------------------------------------
-static int DispatchAlpha(const uint8_t* alpha, int alpha_stride,
- int width, int height,
- uint8_t* dst, int dst_stride) {
+static int DispatchAlpha_SSE2(const uint8_t* alpha, int alpha_stride,
+ int width, int height,
+ uint8_t* dst, int dst_stride) {
// alpha_and stores an 'and' operation of all the alpha[] values. The final
// value is not 0xff if any of the alpha[] is not equal to 0xff.
uint32_t alpha_and = 0xff;
@@ -72,9 +72,9 @@ static int DispatchAlpha(const uint8_t* alpha, int alpha_stride,
return (alpha_and != 0xff);
}
-static void DispatchAlphaToGreen(const uint8_t* alpha, int alpha_stride,
- int width, int height,
- uint32_t* dst, int dst_stride) {
+static void DispatchAlphaToGreen_SSE2(const uint8_t* alpha, int alpha_stride,
+ int width, int height,
+ uint32_t* dst, int dst_stride) {
int i, j;
const __m128i zero = _mm_setzero_si128();
const int limit = width & ~15;
@@ -98,9 +98,9 @@ static void DispatchAlphaToGreen(const uint8_t* alpha, int alpha_stride,
}
}
-static int ExtractAlpha(const uint8_t* argb, int argb_stride,
- int width, int height,
- uint8_t* alpha, int alpha_stride) {
+static int ExtractAlpha_SSE2(const uint8_t* argb, int argb_stride,
+ int width, int height,
+ uint8_t* alpha, int alpha_stride) {
// alpha_and stores an 'and' operation of all the alpha[] values. The final
// value is not 0xff if any of the alpha[] is not equal to 0xff.
uint32_t alpha_and = 0xff;
@@ -210,6 +210,61 @@ static void ApplyAlphaMultiply_SSE2(uint8_t* rgba, int alpha_first,
#undef MULTIPLIER
#undef PREMULTIPLY
+//------------------------------------------------------------------------------
+// Alpha detection
+
+static int HasAlpha8b_SSE2(const uint8_t* src, int length) {
+ const __m128i all_0xff = _mm_set1_epi8(0xff);
+ int i = 0;
+ for (; i + 16 <= length; i += 16) {
+ const __m128i v = _mm_loadu_si128((const __m128i*)(src + i));
+ const __m128i bits = _mm_cmpeq_epi8(v, all_0xff);
+ const int mask = _mm_movemask_epi8(bits);
+ if (mask != 0xffff) return 1;
+ }
+ for (; i < length; ++i) if (src[i] != 0xff) return 1;
+ return 0;
+}
+
+static int HasAlpha32b_SSE2(const uint8_t* src, int length) {
+ const __m128i alpha_mask = _mm_set1_epi32(0xff);
+ const __m128i all_0xff = _mm_set1_epi8(0xff);
+ int i = 0;
+ // We don't know if we can access the last 3 bytes after the last alpha
+ // value 'src[4 * length - 4]' (because we don't know if alpha is the first
+ // or the last byte of the quadruplet). Hence the '-3' protection below.
+ length = length * 4 - 3; // size in bytes
+ for (; i + 64 <= length; i += 64) {
+ const __m128i a0 = _mm_loadu_si128((const __m128i*)(src + i + 0));
+ const __m128i a1 = _mm_loadu_si128((const __m128i*)(src + i + 16));
+ const __m128i a2 = _mm_loadu_si128((const __m128i*)(src + i + 32));
+ const __m128i a3 = _mm_loadu_si128((const __m128i*)(src + i + 48));
+ const __m128i b0 = _mm_and_si128(a0, alpha_mask);
+ const __m128i b1 = _mm_and_si128(a1, alpha_mask);
+ const __m128i b2 = _mm_and_si128(a2, alpha_mask);
+ const __m128i b3 = _mm_and_si128(a3, alpha_mask);
+ const __m128i c0 = _mm_packs_epi32(b0, b1);
+ const __m128i c1 = _mm_packs_epi32(b2, b3);
+ const __m128i d = _mm_packus_epi16(c0, c1);
+ const __m128i bits = _mm_cmpeq_epi8(d, all_0xff);
+ const int mask = _mm_movemask_epi8(bits);
+ if (mask != 0xffff) return 1;
+ }
+ for (; i + 32 <= length; i += 32) {
+ const __m128i a0 = _mm_loadu_si128((const __m128i*)(src + i + 0));
+ const __m128i a1 = _mm_loadu_si128((const __m128i*)(src + i + 16));
+ const __m128i b0 = _mm_and_si128(a0, alpha_mask);
+ const __m128i b1 = _mm_and_si128(a1, alpha_mask);
+ const __m128i c = _mm_packs_epi32(b0, b1);
+ const __m128i d = _mm_packus_epi16(c, c);
+ const __m128i bits = _mm_cmpeq_epi8(d, all_0xff);
+ const int mask = _mm_movemask_epi8(bits);
+ if (mask != 0xffff) return 1;
+ }
+ for (; i <= length; i += 4) if (src[i] != 0xff) return 1;
+ return 0;
+}
+
// -----------------------------------------------------------------------------
// Apply alpha value to rows
@@ -238,7 +293,7 @@ static void MultARGBRow_SSE2(uint32_t* const ptr, int width, int inverse) {
}
}
width -= x;
- if (width > 0) WebPMultARGBRowC(ptr + x, width, inverse);
+ if (width > 0) WebPMultARGBRow_C(ptr + x, width, inverse);
}
static void MultRow_SSE2(uint8_t* const ptr, const uint8_t* const alpha,
@@ -261,7 +316,7 @@ static void MultRow_SSE2(uint8_t* const ptr, const uint8_t* const alpha,
}
}
width -= x;
- if (width > 0) WebPMultRowC(ptr + x, alpha + x, width, inverse);
+ if (width > 0) WebPMultRow_C(ptr + x, alpha + x, width, inverse);
}
//------------------------------------------------------------------------------
@@ -273,9 +328,12 @@ WEBP_TSAN_IGNORE_FUNCTION void WebPInitAlphaProcessingSSE2(void) {
WebPMultARGBRow = MultARGBRow_SSE2;
WebPMultRow = MultRow_SSE2;
WebPApplyAlphaMultiply = ApplyAlphaMultiply_SSE2;
- WebPDispatchAlpha = DispatchAlpha;
- WebPDispatchAlphaToGreen = DispatchAlphaToGreen;
- WebPExtractAlpha = ExtractAlpha;
+ WebPDispatchAlpha = DispatchAlpha_SSE2;
+ WebPDispatchAlphaToGreen = DispatchAlphaToGreen_SSE2;
+ WebPExtractAlpha = ExtractAlpha_SSE2;
+
+ WebPHasAlpha8b = HasAlpha8b_SSE2;
+ WebPHasAlpha32b = HasAlpha32b_SSE2;
}
#else // !WEBP_USE_SSE2
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-09 19:04:05 +0000