Use the upstream version of libwebp, v0.4.3.

third_party/libwebp/dsp/yuv_mips32.c

+// 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.
+// -----------------------------------------------------------------------------
+//
+// MIPS version of YUV to RGB upsampling functions.
+//
+// Author(s):  Djordje Pesut    (djordje.pesut@imgtec.com)
+//             Jovan Zelincevic (jovan.zelincevic@imgtec.com)
+
+#include "./dsp.h"
+
+#if defined(WEBP_USE_MIPS32)
+
+#include "./yuv.h"
+
+//------------------------------------------------------------------------------
+// simple point-sampling
+
+#define ROW_FUNC(FUNC_NAME, XSTEP, R, G, B, A)                                 \
+static void FUNC_NAME(const uint8_t* y,                                        \
+                      const uint8_t* u, const uint8_t* v,                      \
+                      uint8_t* dst, int len) {                                 \
+  int i, r, g, b;                                                              \
+  int temp0, temp1, temp2, temp3, temp4;                                       \
+  for (i = 0; i < (len >> 1); i++) {                                           \
+    temp1 = kVToR * v[0];                                                      \
+    temp3 = kVToG * v[0];                                                      \
+    temp2 = kUToG * u[0];                                                      \
+    temp4 = kUToB * u[0];                                                      \
+    temp0 = kYScale * y[0];                                                    \
+    temp1 += kRCst;                                                            \
+    temp3 -= kGCst;                                                            \
+    temp2 += temp3;                                                            \
+    temp4 += kBCst;                                                            \
+    r = VP8Clip8(temp0 + temp1);                                               \
+    g = VP8Clip8(temp0 - temp2);                                               \
+    b = VP8Clip8(temp0 + temp4);                                               \
+    temp0 = kYScale * y[1];                                                    \
+    dst[R] = r;                                                                \
+    dst[G] = g;                                                                \
+    dst[B] = b;                                                                \
+    if (A) dst[A] = 0xff;                                                      \
+    r = VP8Clip8(temp0 + temp1);                                               \
+    g = VP8Clip8(temp0 - temp2);                                               \
+    b = VP8Clip8(temp0 + temp4);                                               \
+    dst[R + XSTEP] = r;                                                        \
+    dst[G + XSTEP] = g;                                                        \
+    dst[B + XSTEP] = b;                                                        \
+    if (A) dst[A + XSTEP] = 0xff;                                              \
+    y += 2;                                                                    \
+    ++u;                                                                       \
+    ++v;                                                                       \
+    dst += 2 * XSTEP;                                                          \
+  }                                                                            \
+  if (len & 1) {                                                               \
+    temp1 = kVToR * v[0];                                                      \
+    temp3 = kVToG * v[0];                                                      \
+    temp2 = kUToG * u[0];                                                      \
+    temp4 = kUToB * u[0];                                                      \
+    temp0 = kYScale * y[0];                                                    \
+    temp1 += kRCst;                                                            \
+    temp3 -= kGCst;                                                            \
+    temp2 += temp3;                                                            \
+    temp4 += kBCst;                                                            \
+    r = VP8Clip8(temp0 + temp1);                                               \
+    g = VP8Clip8(temp0 - temp2);                                               \
+    b = VP8Clip8(temp0 + temp4);                                               \
+    dst[R] = r;                                                                \
+    dst[G] = g;                                                                \
+    dst[B] = b;                                                                \
+    if (A) dst[A] = 0xff;                                                      \
+  }                                                                            \
+}
+
+ROW_FUNC(YuvToRgbRow,      3, 0, 1, 2, 0)
+ROW_FUNC(YuvToRgbaRow,     4, 0, 1, 2, 3)
+ROW_FUNC(YuvToBgrRow,      3, 2, 1, 0, 0)
+ROW_FUNC(YuvToBgraRow,     4, 2, 1, 0, 3)
+
+#undef ROW_FUNC
+
+#endif   // WEBP_USE_MIPS32
+
+//------------------------------------------------------------------------------
+
+extern void WebPInitSamplersMIPS32(void);
+
+void WebPInitSamplersMIPS32(void) {
+#if defined(WEBP_USE_MIPS32)
+  WebPSamplers[MODE_RGB]  = YuvToRgbRow;
+  WebPSamplers[MODE_RGBA] = YuvToRgbaRow;
+  WebPSamplers[MODE_BGR]  = YuvToBgrRow;
+  WebPSamplers[MODE_BGRA] = YuvToBgraRow;
+#endif  // WEBP_USE_MIPS32
+}