Add build files to support libwebp decoding.

1 files changed, 44 insertions, 0 deletions

diff --git a/media/libwebp/moz/cpu.cpp b/media/libwebp/moz/cpu.cpp
new file mode 100644
index 000000000..39b9f3500
--- /dev/null
+++ b/media/libwebp/moz/cpu.cpp
@@ -0,0 +1,44 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/* This file replaces the CPU info methods originally implemented in
+ * src/dsp/cpu.c, due to missing dependencies for Andriod builds. It
+ * controls if NEON/SSE/etc is used. */
+
+#include "../dsp/dsp.h"
+#include "mozilla/arm.h"
+#include "mozilla/SSE.h"
+
+static int MozCPUInfo(CPUFeature feature)
+{
+  switch (feature) {
+#if defined(__i386__) || defined(__x86_64__) || defined(WEBP_MSC_SSE2)
+    case kSSE2:
+      return mozilla::supports_sse2();
+    case kSSE3:
+      return mozilla::supports_sse3();
+    case kSSE4_1:
+      return mozilla::supports_sse4_1();
+    case kAVX:
+      return mozilla::supports_avx();
+    case kAVX2:
+      return mozilla::supports_avx2();
+#endif
+#if defined(WEBP_USE_NEON) || defined(WEBP_ANDROID_NEON)
+    case kNEON:
+      return mozilla::supports_neon();
+#endif
+#if defined(WEBP_USE_MIPS32) || defined(WEBP_USE_MIPS_DSP_R2) || defined(WEBP_USE_MSA)
+    case kMIPS32:
+    case kMIPSdspR2:
+    case kMSA:
+      return 1;
+#endif
+    default:
+      return 0;
+  }
+}
+
+VP8CPUInfo VP8GetCPUInfo = MozCPUInfo;