summaryrefslogtreecommitdiffstats
path: root/media/libwebp/src/dsp/yuv_sse2.c
diff options
context:
space:
mode:
Diffstat (limited to 'media/libwebp/src/dsp/yuv_sse2.c')
-rw-r--r--media/libwebp/src/dsp/yuv_sse2.c758
1 files changed, 758 insertions, 0 deletions
diff --git a/media/libwebp/src/dsp/yuv_sse2.c b/media/libwebp/src/dsp/yuv_sse2.c
new file mode 100644
index 0000000000..01a48f9af2
--- /dev/null
+++ b/media/libwebp/src/dsp/yuv_sse2.c
@@ -0,0 +1,758 @@
+// 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.
+// -----------------------------------------------------------------------------
+//
+// YUV->RGB conversion functions
+//
+// Author: Skal (pascal.massimino@gmail.com)
+
+#include "src/dsp/yuv.h"
+
+#if defined(WEBP_USE_SSE2)
+
+#include <stdlib.h>
+#include <emmintrin.h>
+
+#include "src/dsp/common_sse2.h"
+#include "src/utils/utils.h"
+
+//-----------------------------------------------------------------------------
+// Convert spans of 32 pixels to various RGB formats for the fancy upsampler.
+
+// These constants are 14b fixed-point version of ITU-R BT.601 constants.
+// R = (19077 * y + 26149 * v - 14234) >> 6
+// G = (19077 * y - 6419 * u - 13320 * v + 8708) >> 6
+// B = (19077 * y + 33050 * u - 17685) >> 6
+static void ConvertYUV444ToRGB_SSE2(const __m128i* const Y0,
+ const __m128i* const U0,
+ const __m128i* const V0,
+ __m128i* const R,
+ __m128i* const G,
+ __m128i* const B) {
+ const __m128i k19077 = _mm_set1_epi16(19077);
+ const __m128i k26149 = _mm_set1_epi16(26149);
+ const __m128i k14234 = _mm_set1_epi16(14234);
+ // 33050 doesn't fit in a signed short: only use this with unsigned arithmetic
+ const __m128i k33050 = _mm_set1_epi16((short)33050);
+ const __m128i k17685 = _mm_set1_epi16(17685);
+ const __m128i k6419 = _mm_set1_epi16(6419);
+ const __m128i k13320 = _mm_set1_epi16(13320);
+ const __m128i k8708 = _mm_set1_epi16(8708);
+
+ const __m128i Y1 = _mm_mulhi_epu16(*Y0, k19077);
+
+ const __m128i R0 = _mm_mulhi_epu16(*V0, k26149);
+ const __m128i R1 = _mm_sub_epi16(Y1, k14234);
+ const __m128i R2 = _mm_add_epi16(R1, R0);
+
+ const __m128i G0 = _mm_mulhi_epu16(*U0, k6419);
+ const __m128i G1 = _mm_mulhi_epu16(*V0, k13320);
+ const __m128i G2 = _mm_add_epi16(Y1, k8708);
+ const __m128i G3 = _mm_add_epi16(G0, G1);
+ const __m128i G4 = _mm_sub_epi16(G2, G3);
+
+ // be careful with the saturated *unsigned* arithmetic here!
+ const __m128i B0 = _mm_mulhi_epu16(*U0, k33050);
+ const __m128i B1 = _mm_adds_epu16(B0, Y1);
+ const __m128i B2 = _mm_subs_epu16(B1, k17685);
+
+ // use logical shift for B2, which can be larger than 32767
+ *R = _mm_srai_epi16(R2, 6); // range: [-14234, 30815]
+ *G = _mm_srai_epi16(G4, 6); // range: [-10953, 27710]
+ *B = _mm_srli_epi16(B2, 6); // range: [0, 34238]
+}
+
+// Load the bytes into the *upper* part of 16b words. That's "<< 8", basically.
+static WEBP_INLINE __m128i Load_HI_16_SSE2(const uint8_t* src) {
+ const __m128i zero = _mm_setzero_si128();
+ return _mm_unpacklo_epi8(zero, _mm_loadl_epi64((const __m128i*)src));
+}
+
+// Load and replicate the U/V samples
+static WEBP_INLINE __m128i Load_UV_HI_8_SSE2(const uint8_t* src) {
+ const __m128i zero = _mm_setzero_si128();
+ const __m128i tmp0 = _mm_cvtsi32_si128(WebPMemToInt32(src));
+ const __m128i tmp1 = _mm_unpacklo_epi8(zero, tmp0);
+ return _mm_unpacklo_epi16(tmp1, tmp1); // replicate samples
+}
+
+// Convert 32 samples of YUV444 to R/G/B
+static void YUV444ToRGB_SSE2(const uint8_t* const y,
+ const uint8_t* const u,
+ const uint8_t* const v,
+ __m128i* const R, __m128i* const G,
+ __m128i* const B) {
+ const __m128i Y0 = Load_HI_16_SSE2(y), U0 = Load_HI_16_SSE2(u),
+ V0 = Load_HI_16_SSE2(v);
+ ConvertYUV444ToRGB_SSE2(&Y0, &U0, &V0, R, G, B);
+}
+
+// Convert 32 samples of YUV420 to R/G/B
+static void YUV420ToRGB_SSE2(const uint8_t* const y,
+ const uint8_t* const u,
+ const uint8_t* const v,
+ __m128i* const R, __m128i* const G,
+ __m128i* const B) {
+ const __m128i Y0 = Load_HI_16_SSE2(y), U0 = Load_UV_HI_8_SSE2(u),
+ V0 = Load_UV_HI_8_SSE2(v);
+ ConvertYUV444ToRGB_SSE2(&Y0, &U0, &V0, R, G, B);
+}
+
+// Pack R/G/B/A results into 32b output.
+static WEBP_INLINE void PackAndStore4_SSE2(const __m128i* const R,
+ const __m128i* const G,
+ const __m128i* const B,
+ const __m128i* const A,
+ uint8_t* const dst) {
+ const __m128i rb = _mm_packus_epi16(*R, *B);
+ const __m128i ga = _mm_packus_epi16(*G, *A);
+ const __m128i rg = _mm_unpacklo_epi8(rb, ga);
+ const __m128i ba = _mm_unpackhi_epi8(rb, ga);
+ const __m128i RGBA_lo = _mm_unpacklo_epi16(rg, ba);
+ const __m128i RGBA_hi = _mm_unpackhi_epi16(rg, ba);
+ _mm_storeu_si128((__m128i*)(dst + 0), RGBA_lo);
+ _mm_storeu_si128((__m128i*)(dst + 16), RGBA_hi);
+}
+
+// Pack R/G/B/A results into 16b output.
+static WEBP_INLINE void PackAndStore4444_SSE2(const __m128i* const R,
+ const __m128i* const G,
+ const __m128i* const B,
+ const __m128i* const A,
+ uint8_t* const dst) {
+#if (WEBP_SWAP_16BIT_CSP == 0)
+ const __m128i rg0 = _mm_packus_epi16(*R, *G);
+ const __m128i ba0 = _mm_packus_epi16(*B, *A);
+#else
+ const __m128i rg0 = _mm_packus_epi16(*B, *A);
+ const __m128i ba0 = _mm_packus_epi16(*R, *G);
+#endif
+ const __m128i mask_0xf0 = _mm_set1_epi8((char)0xf0);
+ const __m128i rb1 = _mm_unpacklo_epi8(rg0, ba0); // rbrbrbrbrb...
+ const __m128i ga1 = _mm_unpackhi_epi8(rg0, ba0); // gagagagaga...
+ const __m128i rb2 = _mm_and_si128(rb1, mask_0xf0);
+ const __m128i ga2 = _mm_srli_epi16(_mm_and_si128(ga1, mask_0xf0), 4);
+ const __m128i rgba4444 = _mm_or_si128(rb2, ga2);
+ _mm_storeu_si128((__m128i*)dst, rgba4444);
+}
+
+// Pack R/G/B results into 16b output.
+static WEBP_INLINE void PackAndStore565_SSE2(const __m128i* const R,
+ const __m128i* const G,
+ const __m128i* const B,
+ uint8_t* const dst) {
+ const __m128i r0 = _mm_packus_epi16(*R, *R);
+ const __m128i g0 = _mm_packus_epi16(*G, *G);
+ const __m128i b0 = _mm_packus_epi16(*B, *B);
+ const __m128i r1 = _mm_and_si128(r0, _mm_set1_epi8((char)0xf8));
+ const __m128i b1 = _mm_and_si128(_mm_srli_epi16(b0, 3), _mm_set1_epi8(0x1f));
+ const __m128i g1 =
+ _mm_srli_epi16(_mm_and_si128(g0, _mm_set1_epi8((char)0xe0)), 5);
+ const __m128i g2 = _mm_slli_epi16(_mm_and_si128(g0, _mm_set1_epi8(0x1c)), 3);
+ const __m128i rg = _mm_or_si128(r1, g1);
+ const __m128i gb = _mm_or_si128(g2, b1);
+#if (WEBP_SWAP_16BIT_CSP == 0)
+ const __m128i rgb565 = _mm_unpacklo_epi8(rg, gb);
+#else
+ const __m128i rgb565 = _mm_unpacklo_epi8(gb, rg);
+#endif
+ _mm_storeu_si128((__m128i*)dst, rgb565);
+}
+
+// Pack the planar buffers
+// rrrr... rrrr... gggg... gggg... bbbb... bbbb....
+// triplet by triplet in the output buffer rgb as rgbrgbrgbrgb ...
+static WEBP_INLINE void PlanarTo24b_SSE2(__m128i* const in0, __m128i* const in1,
+ __m128i* const in2, __m128i* const in3,
+ __m128i* const in4, __m128i* const in5,
+ uint8_t* const rgb) {
+ // The input is 6 registers of sixteen 8b but for the sake of explanation,
+ // let's take 6 registers of four 8b values.
+ // To pack, we will keep taking one every two 8b integer and move it
+ // around as follows:
+ // Input:
+ // r0r1r2r3 | r4r5r6r7 | g0g1g2g3 | g4g5g6g7 | b0b1b2b3 | b4b5b6b7
+ // Split the 6 registers in two sets of 3 registers: the first set as the even
+ // 8b bytes, the second the odd ones:
+ // r0r2r4r6 | g0g2g4g6 | b0b2b4b6 | r1r3r5r7 | g1g3g5g7 | b1b3b5b7
+ // Repeat the same permutations twice more:
+ // r0r4g0g4 | b0b4r1r5 | g1g5b1b5 | r2r6g2g6 | b2b6r3r7 | g3g7b3b7
+ // r0g0b0r1 | g1b1r2g2 | b2r3g3b3 | r4g4b4r5 | g5b5r6g6 | b6r7g7b7
+ VP8PlanarTo24b_SSE2(in0, in1, in2, in3, in4, in5);
+
+ _mm_storeu_si128((__m128i*)(rgb + 0), *in0);
+ _mm_storeu_si128((__m128i*)(rgb + 16), *in1);
+ _mm_storeu_si128((__m128i*)(rgb + 32), *in2);
+ _mm_storeu_si128((__m128i*)(rgb + 48), *in3);
+ _mm_storeu_si128((__m128i*)(rgb + 64), *in4);
+ _mm_storeu_si128((__m128i*)(rgb + 80), *in5);
+}
+
+void VP8YuvToRgba32_SSE2(const uint8_t* y, const uint8_t* u, const uint8_t* v,
+ uint8_t* dst) {
+ const __m128i kAlpha = _mm_set1_epi16(255);
+ int n;
+ for (n = 0; n < 32; n += 8, dst += 32) {
+ __m128i R, G, B;
+ YUV444ToRGB_SSE2(y + n, u + n, v + n, &R, &G, &B);
+ PackAndStore4_SSE2(&R, &G, &B, &kAlpha, dst);
+ }
+}
+
+void VP8YuvToBgra32_SSE2(const uint8_t* y, const uint8_t* u, const uint8_t* v,
+ uint8_t* dst) {
+ const __m128i kAlpha = _mm_set1_epi16(255);
+ int n;
+ for (n = 0; n < 32; n += 8, dst += 32) {
+ __m128i R, G, B;
+ YUV444ToRGB_SSE2(y + n, u + n, v + n, &R, &G, &B);
+ PackAndStore4_SSE2(&B, &G, &R, &kAlpha, dst);
+ }
+}
+
+void VP8YuvToArgb32_SSE2(const uint8_t* y, const uint8_t* u, const uint8_t* v,
+ uint8_t* dst) {
+ const __m128i kAlpha = _mm_set1_epi16(255);
+ int n;
+ for (n = 0; n < 32; n += 8, dst += 32) {
+ __m128i R, G, B;
+ YUV444ToRGB_SSE2(y + n, u + n, v + n, &R, &G, &B);
+ PackAndStore4_SSE2(&kAlpha, &R, &G, &B, dst);
+ }
+}
+
+void VP8YuvToRgba444432_SSE2(const uint8_t* y, const uint8_t* u,
+ const uint8_t* v, uint8_t* dst) {
+ const __m128i kAlpha = _mm_set1_epi16(255);
+ int n;
+ for (n = 0; n < 32; n += 8, dst += 16) {
+ __m128i R, G, B;
+ YUV444ToRGB_SSE2(y + n, u + n, v + n, &R, &G, &B);
+ PackAndStore4444_SSE2(&R, &G, &B, &kAlpha, dst);
+ }
+}
+
+void VP8YuvToRgb56532_SSE2(const uint8_t* y, const uint8_t* u, const uint8_t* v,
+ uint8_t* dst) {
+ int n;
+ for (n = 0; n < 32; n += 8, dst += 16) {
+ __m128i R, G, B;
+ YUV444ToRGB_SSE2(y + n, u + n, v + n, &R, &G, &B);
+ PackAndStore565_SSE2(&R, &G, &B, dst);
+ }
+}
+
+void VP8YuvToRgb32_SSE2(const uint8_t* y, const uint8_t* u, const uint8_t* v,
+ uint8_t* dst) {
+ __m128i R0, R1, R2, R3, G0, G1, G2, G3, B0, B1, B2, B3;
+ __m128i rgb0, rgb1, rgb2, rgb3, rgb4, rgb5;
+
+ YUV444ToRGB_SSE2(y + 0, u + 0, v + 0, &R0, &G0, &B0);
+ YUV444ToRGB_SSE2(y + 8, u + 8, v + 8, &R1, &G1, &B1);
+ YUV444ToRGB_SSE2(y + 16, u + 16, v + 16, &R2, &G2, &B2);
+ YUV444ToRGB_SSE2(y + 24, u + 24, v + 24, &R3, &G3, &B3);
+
+ // Cast to 8b and store as RRRRGGGGBBBB.
+ rgb0 = _mm_packus_epi16(R0, R1);
+ rgb1 = _mm_packus_epi16(R2, R3);
+ rgb2 = _mm_packus_epi16(G0, G1);
+ rgb3 = _mm_packus_epi16(G2, G3);
+ rgb4 = _mm_packus_epi16(B0, B1);
+ rgb5 = _mm_packus_epi16(B2, B3);
+
+ // Pack as RGBRGBRGBRGB.
+ PlanarTo24b_SSE2(&rgb0, &rgb1, &rgb2, &rgb3, &rgb4, &rgb5, dst);
+}
+
+void VP8YuvToBgr32_SSE2(const uint8_t* y, const uint8_t* u, const uint8_t* v,
+ uint8_t* dst) {
+ __m128i R0, R1, R2, R3, G0, G1, G2, G3, B0, B1, B2, B3;
+ __m128i bgr0, bgr1, bgr2, bgr3, bgr4, bgr5;
+
+ YUV444ToRGB_SSE2(y + 0, u + 0, v + 0, &R0, &G0, &B0);
+ YUV444ToRGB_SSE2(y + 8, u + 8, v + 8, &R1, &G1, &B1);
+ YUV444ToRGB_SSE2(y + 16, u + 16, v + 16, &R2, &G2, &B2);
+ YUV444ToRGB_SSE2(y + 24, u + 24, v + 24, &R3, &G3, &B3);
+
+ // Cast to 8b and store as BBBBGGGGRRRR.
+ bgr0 = _mm_packus_epi16(B0, B1);
+ bgr1 = _mm_packus_epi16(B2, B3);
+ bgr2 = _mm_packus_epi16(G0, G1);
+ bgr3 = _mm_packus_epi16(G2, G3);
+ bgr4 = _mm_packus_epi16(R0, R1);
+ bgr5= _mm_packus_epi16(R2, R3);
+
+ // Pack as BGRBGRBGRBGR.
+ PlanarTo24b_SSE2(&bgr0, &bgr1, &bgr2, &bgr3, &bgr4, &bgr5, dst);
+}
+
+//-----------------------------------------------------------------------------
+// Arbitrary-length row conversion functions
+
+static void YuvToRgbaRow_SSE2(const uint8_t* y,
+ const uint8_t* u, const uint8_t* v,
+ uint8_t* dst, int len) {
+ const __m128i kAlpha = _mm_set1_epi16(255);
+ int n;
+ for (n = 0; n + 8 <= len; n += 8, dst += 32) {
+ __m128i R, G, B;
+ YUV420ToRGB_SSE2(y, u, v, &R, &G, &B);
+ PackAndStore4_SSE2(&R, &G, &B, &kAlpha, dst);
+ y += 8;
+ u += 4;
+ v += 4;
+ }
+ for (; n < len; ++n) { // Finish off
+ VP8YuvToRgba(y[0], u[0], v[0], dst);
+ dst += 4;
+ y += 1;
+ u += (n & 1);
+ v += (n & 1);
+ }
+}
+
+static void YuvToBgraRow_SSE2(const uint8_t* y,
+ const uint8_t* u, const uint8_t* v,
+ uint8_t* dst, int len) {
+ const __m128i kAlpha = _mm_set1_epi16(255);
+ int n;
+ for (n = 0; n + 8 <= len; n += 8, dst += 32) {
+ __m128i R, G, B;
+ YUV420ToRGB_SSE2(y, u, v, &R, &G, &B);
+ PackAndStore4_SSE2(&B, &G, &R, &kAlpha, dst);
+ y += 8;
+ u += 4;
+ v += 4;
+ }
+ for (; n < len; ++n) { // Finish off
+ VP8YuvToBgra(y[0], u[0], v[0], dst);
+ dst += 4;
+ y += 1;
+ u += (n & 1);
+ v += (n & 1);
+ }
+}
+
+static void YuvToArgbRow_SSE2(const uint8_t* y,
+ const uint8_t* u, const uint8_t* v,
+ uint8_t* dst, int len) {
+ const __m128i kAlpha = _mm_set1_epi16(255);
+ int n;
+ for (n = 0; n + 8 <= len; n += 8, dst += 32) {
+ __m128i R, G, B;
+ YUV420ToRGB_SSE2(y, u, v, &R, &G, &B);
+ PackAndStore4_SSE2(&kAlpha, &R, &G, &B, dst);
+ y += 8;
+ u += 4;
+ v += 4;
+ }
+ for (; n < len; ++n) { // Finish off
+ VP8YuvToArgb(y[0], u[0], v[0], dst);
+ dst += 4;
+ y += 1;
+ u += (n & 1);
+ v += (n & 1);
+ }
+}
+
+static void YuvToRgbRow_SSE2(const uint8_t* y,
+ const uint8_t* u, const uint8_t* v,
+ uint8_t* dst, int len) {
+ int n;
+ for (n = 0; n + 32 <= len; n += 32, dst += 32 * 3) {
+ __m128i R0, R1, R2, R3, G0, G1, G2, G3, B0, B1, B2, B3;
+ __m128i rgb0, rgb1, rgb2, rgb3, rgb4, rgb5;
+
+ YUV420ToRGB_SSE2(y + 0, u + 0, v + 0, &R0, &G0, &B0);
+ YUV420ToRGB_SSE2(y + 8, u + 4, v + 4, &R1, &G1, &B1);
+ YUV420ToRGB_SSE2(y + 16, u + 8, v + 8, &R2, &G2, &B2);
+ YUV420ToRGB_SSE2(y + 24, u + 12, v + 12, &R3, &G3, &B3);
+
+ // Cast to 8b and store as RRRRGGGGBBBB.
+ rgb0 = _mm_packus_epi16(R0, R1);
+ rgb1 = _mm_packus_epi16(R2, R3);
+ rgb2 = _mm_packus_epi16(G0, G1);
+ rgb3 = _mm_packus_epi16(G2, G3);
+ rgb4 = _mm_packus_epi16(B0, B1);
+ rgb5 = _mm_packus_epi16(B2, B3);
+
+ // Pack as RGBRGBRGBRGB.
+ PlanarTo24b_SSE2(&rgb0, &rgb1, &rgb2, &rgb3, &rgb4, &rgb5, dst);
+
+ y += 32;
+ u += 16;
+ v += 16;
+ }
+ for (; n < len; ++n) { // Finish off
+ VP8YuvToRgb(y[0], u[0], v[0], dst);
+ dst += 3;
+ y += 1;
+ u += (n & 1);
+ v += (n & 1);
+ }
+}
+
+static void YuvToBgrRow_SSE2(const uint8_t* y,
+ const uint8_t* u, const uint8_t* v,
+ uint8_t* dst, int len) {
+ int n;
+ for (n = 0; n + 32 <= len; n += 32, dst += 32 * 3) {
+ __m128i R0, R1, R2, R3, G0, G1, G2, G3, B0, B1, B2, B3;
+ __m128i bgr0, bgr1, bgr2, bgr3, bgr4, bgr5;
+
+ YUV420ToRGB_SSE2(y + 0, u + 0, v + 0, &R0, &G0, &B0);
+ YUV420ToRGB_SSE2(y + 8, u + 4, v + 4, &R1, &G1, &B1);
+ YUV420ToRGB_SSE2(y + 16, u + 8, v + 8, &R2, &G2, &B2);
+ YUV420ToRGB_SSE2(y + 24, u + 12, v + 12, &R3, &G3, &B3);
+
+ // Cast to 8b and store as BBBBGGGGRRRR.
+ bgr0 = _mm_packus_epi16(B0, B1);
+ bgr1 = _mm_packus_epi16(B2, B3);
+ bgr2 = _mm_packus_epi16(G0, G1);
+ bgr3 = _mm_packus_epi16(G2, G3);
+ bgr4 = _mm_packus_epi16(R0, R1);
+ bgr5 = _mm_packus_epi16(R2, R3);
+
+ // Pack as BGRBGRBGRBGR.
+ PlanarTo24b_SSE2(&bgr0, &bgr1, &bgr2, &bgr3, &bgr4, &bgr5, dst);
+
+ y += 32;
+ u += 16;
+ v += 16;
+ }
+ for (; n < len; ++n) { // Finish off
+ VP8YuvToBgr(y[0], u[0], v[0], dst);
+ dst += 3;
+ y += 1;
+ u += (n & 1);
+ v += (n & 1);
+ }
+}
+
+//------------------------------------------------------------------------------
+// Entry point
+
+extern void WebPInitSamplersSSE2(void);
+
+WEBP_TSAN_IGNORE_FUNCTION void WebPInitSamplersSSE2(void) {
+ WebPSamplers[MODE_RGB] = YuvToRgbRow_SSE2;
+ WebPSamplers[MODE_RGBA] = YuvToRgbaRow_SSE2;
+ WebPSamplers[MODE_BGR] = YuvToBgrRow_SSE2;
+ WebPSamplers[MODE_BGRA] = YuvToBgraRow_SSE2;
+ WebPSamplers[MODE_ARGB] = YuvToArgbRow_SSE2;
+}
+
+//------------------------------------------------------------------------------
+// RGB24/32 -> YUV converters
+
+// Load eight 16b-words from *src.
+#define LOAD_16(src) _mm_loadu_si128((const __m128i*)(src))
+// Store either 16b-words into *dst
+#define STORE_16(V, dst) _mm_storeu_si128((__m128i*)(dst), (V))
+
+// Function that inserts a value of the second half of the in buffer in between
+// every two char of the first half.
+static WEBP_INLINE void RGB24PackedToPlanarHelper_SSE2(
+ const __m128i* const in /*in[6]*/, __m128i* const out /*out[6]*/) {
+ out[0] = _mm_unpacklo_epi8(in[0], in[3]);
+ out[1] = _mm_unpackhi_epi8(in[0], in[3]);
+ out[2] = _mm_unpacklo_epi8(in[1], in[4]);
+ out[3] = _mm_unpackhi_epi8(in[1], in[4]);
+ out[4] = _mm_unpacklo_epi8(in[2], in[5]);
+ out[5] = _mm_unpackhi_epi8(in[2], in[5]);
+}
+
+// Unpack the 8b input rgbrgbrgbrgb ... as contiguous registers:
+// rrrr... rrrr... gggg... gggg... bbbb... bbbb....
+// Similar to PlanarTo24bHelper(), but in reverse order.
+static WEBP_INLINE void RGB24PackedToPlanar_SSE2(
+ const uint8_t* const rgb, __m128i* const out /*out[6]*/) {
+ __m128i tmp[6];
+ tmp[0] = _mm_loadu_si128((const __m128i*)(rgb + 0));
+ tmp[1] = _mm_loadu_si128((const __m128i*)(rgb + 16));
+ tmp[2] = _mm_loadu_si128((const __m128i*)(rgb + 32));
+ tmp[3] = _mm_loadu_si128((const __m128i*)(rgb + 48));
+ tmp[4] = _mm_loadu_si128((const __m128i*)(rgb + 64));
+ tmp[5] = _mm_loadu_si128((const __m128i*)(rgb + 80));
+
+ RGB24PackedToPlanarHelper_SSE2(tmp, out);
+ RGB24PackedToPlanarHelper_SSE2(out, tmp);
+ RGB24PackedToPlanarHelper_SSE2(tmp, out);
+ RGB24PackedToPlanarHelper_SSE2(out, tmp);
+ RGB24PackedToPlanarHelper_SSE2(tmp, out);
+}
+
+// Convert 8 packed ARGB to r[], g[], b[]
+static WEBP_INLINE void RGB32PackedToPlanar_SSE2(const uint32_t* const argb,
+ __m128i* const rgb /*in[6]*/) {
+ const __m128i zero = _mm_setzero_si128();
+ __m128i a0 = LOAD_16(argb + 0);
+ __m128i a1 = LOAD_16(argb + 4);
+ __m128i a2 = LOAD_16(argb + 8);
+ __m128i a3 = LOAD_16(argb + 12);
+ VP8L32bToPlanar_SSE2(&a0, &a1, &a2, &a3);
+ rgb[0] = _mm_unpacklo_epi8(a1, zero);
+ rgb[1] = _mm_unpackhi_epi8(a1, zero);
+ rgb[2] = _mm_unpacklo_epi8(a2, zero);
+ rgb[3] = _mm_unpackhi_epi8(a2, zero);
+ rgb[4] = _mm_unpacklo_epi8(a3, zero);
+ rgb[5] = _mm_unpackhi_epi8(a3, zero);
+}
+
+// This macro computes (RG * MULT_RG + GB * MULT_GB + ROUNDER) >> DESCALE_FIX
+// It's a macro and not a function because we need to use immediate values with
+// srai_epi32, e.g.
+#define TRANSFORM(RG_LO, RG_HI, GB_LO, GB_HI, MULT_RG, MULT_GB, \
+ ROUNDER, DESCALE_FIX, OUT) do { \
+ const __m128i V0_lo = _mm_madd_epi16(RG_LO, MULT_RG); \
+ const __m128i V0_hi = _mm_madd_epi16(RG_HI, MULT_RG); \
+ const __m128i V1_lo = _mm_madd_epi16(GB_LO, MULT_GB); \
+ const __m128i V1_hi = _mm_madd_epi16(GB_HI, MULT_GB); \
+ const __m128i V2_lo = _mm_add_epi32(V0_lo, V1_lo); \
+ const __m128i V2_hi = _mm_add_epi32(V0_hi, V1_hi); \
+ const __m128i V3_lo = _mm_add_epi32(V2_lo, ROUNDER); \
+ const __m128i V3_hi = _mm_add_epi32(V2_hi, ROUNDER); \
+ const __m128i V5_lo = _mm_srai_epi32(V3_lo, DESCALE_FIX); \
+ const __m128i V5_hi = _mm_srai_epi32(V3_hi, DESCALE_FIX); \
+ (OUT) = _mm_packs_epi32(V5_lo, V5_hi); \
+} while (0)
+
+#define MK_CST_16(A, B) _mm_set_epi16((B), (A), (B), (A), (B), (A), (B), (A))
+static WEBP_INLINE void ConvertRGBToY_SSE2(const __m128i* const R,
+ const __m128i* const G,
+ const __m128i* const B,
+ __m128i* const Y) {
+ const __m128i kRG_y = MK_CST_16(16839, 33059 - 16384);
+ const __m128i kGB_y = MK_CST_16(16384, 6420);
+ const __m128i kHALF_Y = _mm_set1_epi32((16 << YUV_FIX) + YUV_HALF);
+
+ const __m128i RG_lo = _mm_unpacklo_epi16(*R, *G);
+ const __m128i RG_hi = _mm_unpackhi_epi16(*R, *G);
+ const __m128i GB_lo = _mm_unpacklo_epi16(*G, *B);
+ const __m128i GB_hi = _mm_unpackhi_epi16(*G, *B);
+ TRANSFORM(RG_lo, RG_hi, GB_lo, GB_hi, kRG_y, kGB_y, kHALF_Y, YUV_FIX, *Y);
+}
+
+static WEBP_INLINE void ConvertRGBToUV_SSE2(const __m128i* const R,
+ const __m128i* const G,
+ const __m128i* const B,
+ __m128i* const U,
+ __m128i* const V) {
+ const __m128i kRG_u = MK_CST_16(-9719, -19081);
+ const __m128i kGB_u = MK_CST_16(0, 28800);
+ const __m128i kRG_v = MK_CST_16(28800, 0);
+ const __m128i kGB_v = MK_CST_16(-24116, -4684);
+ const __m128i kHALF_UV = _mm_set1_epi32(((128 << YUV_FIX) + YUV_HALF) << 2);
+
+ const __m128i RG_lo = _mm_unpacklo_epi16(*R, *G);
+ const __m128i RG_hi = _mm_unpackhi_epi16(*R, *G);
+ const __m128i GB_lo = _mm_unpacklo_epi16(*G, *B);
+ const __m128i GB_hi = _mm_unpackhi_epi16(*G, *B);
+ TRANSFORM(RG_lo, RG_hi, GB_lo, GB_hi, kRG_u, kGB_u,
+ kHALF_UV, YUV_FIX + 2, *U);
+ TRANSFORM(RG_lo, RG_hi, GB_lo, GB_hi, kRG_v, kGB_v,
+ kHALF_UV, YUV_FIX + 2, *V);
+}
+
+#undef MK_CST_16
+#undef TRANSFORM
+
+static void ConvertRGB24ToY_SSE2(const uint8_t* rgb, uint8_t* y, int width) {
+ const int max_width = width & ~31;
+ int i;
+ for (i = 0; i < max_width; rgb += 3 * 16 * 2) {
+ __m128i rgb_plane[6];
+ int j;
+
+ RGB24PackedToPlanar_SSE2(rgb, rgb_plane);
+
+ for (j = 0; j < 2; ++j, i += 16) {
+ const __m128i zero = _mm_setzero_si128();
+ __m128i r, g, b, Y0, Y1;
+
+ // Convert to 16-bit Y.
+ r = _mm_unpacklo_epi8(rgb_plane[0 + j], zero);
+ g = _mm_unpacklo_epi8(rgb_plane[2 + j], zero);
+ b = _mm_unpacklo_epi8(rgb_plane[4 + j], zero);
+ ConvertRGBToY_SSE2(&r, &g, &b, &Y0);
+
+ // Convert to 16-bit Y.
+ r = _mm_unpackhi_epi8(rgb_plane[0 + j], zero);
+ g = _mm_unpackhi_epi8(rgb_plane[2 + j], zero);
+ b = _mm_unpackhi_epi8(rgb_plane[4 + j], zero);
+ ConvertRGBToY_SSE2(&r, &g, &b, &Y1);
+
+ // Cast to 8-bit and store.
+ STORE_16(_mm_packus_epi16(Y0, Y1), y + i);
+ }
+ }
+ for (; i < width; ++i, rgb += 3) { // left-over
+ y[i] = VP8RGBToY(rgb[0], rgb[1], rgb[2], YUV_HALF);
+ }
+}
+
+static void ConvertBGR24ToY_SSE2(const uint8_t* bgr, uint8_t* y, int width) {
+ const int max_width = width & ~31;
+ int i;
+ for (i = 0; i < max_width; bgr += 3 * 16 * 2) {
+ __m128i bgr_plane[6];
+ int j;
+
+ RGB24PackedToPlanar_SSE2(bgr, bgr_plane);
+
+ for (j = 0; j < 2; ++j, i += 16) {
+ const __m128i zero = _mm_setzero_si128();
+ __m128i r, g, b, Y0, Y1;
+
+ // Convert to 16-bit Y.
+ b = _mm_unpacklo_epi8(bgr_plane[0 + j], zero);
+ g = _mm_unpacklo_epi8(bgr_plane[2 + j], zero);
+ r = _mm_unpacklo_epi8(bgr_plane[4 + j], zero);
+ ConvertRGBToY_SSE2(&r, &g, &b, &Y0);
+
+ // Convert to 16-bit Y.
+ b = _mm_unpackhi_epi8(bgr_plane[0 + j], zero);
+ g = _mm_unpackhi_epi8(bgr_plane[2 + j], zero);
+ r = _mm_unpackhi_epi8(bgr_plane[4 + j], zero);
+ ConvertRGBToY_SSE2(&r, &g, &b, &Y1);
+
+ // Cast to 8-bit and store.
+ STORE_16(_mm_packus_epi16(Y0, Y1), y + i);
+ }
+ }
+ for (; i < width; ++i, bgr += 3) { // left-over
+ y[i] = VP8RGBToY(bgr[2], bgr[1], bgr[0], YUV_HALF);
+ }
+}
+
+static void ConvertARGBToY_SSE2(const uint32_t* argb, uint8_t* y, int width) {
+ const int max_width = width & ~15;
+ int i;
+ for (i = 0; i < max_width; i += 16) {
+ __m128i Y0, Y1, rgb[6];
+ RGB32PackedToPlanar_SSE2(&argb[i], rgb);
+ ConvertRGBToY_SSE2(&rgb[0], &rgb[2], &rgb[4], &Y0);
+ ConvertRGBToY_SSE2(&rgb[1], &rgb[3], &rgb[5], &Y1);
+ STORE_16(_mm_packus_epi16(Y0, Y1), y + i);
+ }
+ for (; i < width; ++i) { // left-over
+ const uint32_t p = argb[i];
+ y[i] = VP8RGBToY((p >> 16) & 0xff, (p >> 8) & 0xff, (p >> 0) & 0xff,
+ YUV_HALF);
+ }
+}
+
+// Horizontal add (doubled) of two 16b values, result is 16b.
+// in: A | B | C | D | ... -> out: 2*(A+B) | 2*(C+D) | ...
+static void HorizontalAddPack_SSE2(const __m128i* const A,
+ const __m128i* const B,
+ __m128i* const out) {
+ const __m128i k2 = _mm_set1_epi16(2);
+ const __m128i C = _mm_madd_epi16(*A, k2);
+ const __m128i D = _mm_madd_epi16(*B, k2);
+ *out = _mm_packs_epi32(C, D);
+}
+
+static void ConvertARGBToUV_SSE2(const uint32_t* argb,
+ uint8_t* u, uint8_t* v,
+ int src_width, int do_store) {
+ const int max_width = src_width & ~31;
+ int i;
+ for (i = 0; i < max_width; i += 32, u += 16, v += 16) {
+ __m128i rgb[6], U0, V0, U1, V1;
+ RGB32PackedToPlanar_SSE2(&argb[i], rgb);
+ HorizontalAddPack_SSE2(&rgb[0], &rgb[1], &rgb[0]);
+ HorizontalAddPack_SSE2(&rgb[2], &rgb[3], &rgb[2]);
+ HorizontalAddPack_SSE2(&rgb[4], &rgb[5], &rgb[4]);
+ ConvertRGBToUV_SSE2(&rgb[0], &rgb[2], &rgb[4], &U0, &V0);
+
+ RGB32PackedToPlanar_SSE2(&argb[i + 16], rgb);
+ HorizontalAddPack_SSE2(&rgb[0], &rgb[1], &rgb[0]);
+ HorizontalAddPack_SSE2(&rgb[2], &rgb[3], &rgb[2]);
+ HorizontalAddPack_SSE2(&rgb[4], &rgb[5], &rgb[4]);
+ ConvertRGBToUV_SSE2(&rgb[0], &rgb[2], &rgb[4], &U1, &V1);
+
+ U0 = _mm_packus_epi16(U0, U1);
+ V0 = _mm_packus_epi16(V0, V1);
+ if (!do_store) {
+ const __m128i prev_u = LOAD_16(u);
+ const __m128i prev_v = LOAD_16(v);
+ U0 = _mm_avg_epu8(U0, prev_u);
+ V0 = _mm_avg_epu8(V0, prev_v);
+ }
+ STORE_16(U0, u);
+ STORE_16(V0, v);
+ }
+ if (i < src_width) { // left-over
+ WebPConvertARGBToUV_C(argb + i, u, v, src_width - i, do_store);
+ }
+}
+
+// Convert 16 packed ARGB 16b-values to r[], g[], b[]
+static WEBP_INLINE void RGBA32PackedToPlanar_16b_SSE2(
+ const uint16_t* const rgbx,
+ __m128i* const r, __m128i* const g, __m128i* const b) {
+ const __m128i in0 = LOAD_16(rgbx + 0); // r0 | g0 | b0 |x| r1 | g1 | b1 |x
+ const __m128i in1 = LOAD_16(rgbx + 8); // r2 | g2 | b2 |x| r3 | g3 | b3 |x
+ const __m128i in2 = LOAD_16(rgbx + 16); // r4 | ...
+ const __m128i in3 = LOAD_16(rgbx + 24); // r6 | ...
+ // column-wise transpose
+ const __m128i A0 = _mm_unpacklo_epi16(in0, in1);
+ const __m128i A1 = _mm_unpackhi_epi16(in0, in1);
+ const __m128i A2 = _mm_unpacklo_epi16(in2, in3);
+ const __m128i A3 = _mm_unpackhi_epi16(in2, in3);
+ const __m128i B0 = _mm_unpacklo_epi16(A0, A1); // r0 r1 r2 r3 | g0 g1 ..
+ const __m128i B1 = _mm_unpackhi_epi16(A0, A1); // b0 b1 b2 b3 | x x x x
+ const __m128i B2 = _mm_unpacklo_epi16(A2, A3); // r4 r5 r6 r7 | g4 g5 ..
+ const __m128i B3 = _mm_unpackhi_epi16(A2, A3); // b4 b5 b6 b7 | x x x x
+ *r = _mm_unpacklo_epi64(B0, B2);
+ *g = _mm_unpackhi_epi64(B0, B2);
+ *b = _mm_unpacklo_epi64(B1, B3);
+}
+
+static void ConvertRGBA32ToUV_SSE2(const uint16_t* rgb,
+ uint8_t* u, uint8_t* v, int width) {
+ const int max_width = width & ~15;
+ const uint16_t* const last_rgb = rgb + 4 * max_width;
+ while (rgb < last_rgb) {
+ __m128i r, g, b, U0, V0, U1, V1;
+ RGBA32PackedToPlanar_16b_SSE2(rgb + 0, &r, &g, &b);
+ ConvertRGBToUV_SSE2(&r, &g, &b, &U0, &V0);
+ RGBA32PackedToPlanar_16b_SSE2(rgb + 32, &r, &g, &b);
+ ConvertRGBToUV_SSE2(&r, &g, &b, &U1, &V1);
+ STORE_16(_mm_packus_epi16(U0, U1), u);
+ STORE_16(_mm_packus_epi16(V0, V1), v);
+ u += 16;
+ v += 16;
+ rgb += 2 * 32;
+ }
+ if (max_width < width) { // left-over
+ WebPConvertRGBA32ToUV_C(rgb, u, v, width - max_width);
+ }
+}
+
+//------------------------------------------------------------------------------
+
+extern void WebPInitConvertARGBToYUVSSE2(void);
+
+WEBP_TSAN_IGNORE_FUNCTION void WebPInitConvertARGBToYUVSSE2(void) {
+ WebPConvertARGBToY = ConvertARGBToY_SSE2;
+ WebPConvertARGBToUV = ConvertARGBToUV_SSE2;
+
+ WebPConvertRGB24ToY = ConvertRGB24ToY_SSE2;
+ WebPConvertBGR24ToY = ConvertBGR24ToY_SSE2;
+
+ WebPConvertRGBA32ToUV = ConvertRGBA32ToUV_SSE2;
+}
+
+#else // !WEBP_USE_SSE2
+
+WEBP_DSP_INIT_STUB(WebPInitSamplersSSE2)
+WEBP_DSP_INIT_STUB(WebPInitConvertARGBToYUVSSE2)
+
+#endif // WEBP_USE_SSE2
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-04 13:11:30 +0000