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/*
* Copyright (c) 2020 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE 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.
*/
#include "modules/audio_processing/agc2/cpu_features.h"
#include <string>
#include "rtc_base/cpu_info.h"
#include "rtc_base/strings/string_builder.h"
#include "rtc_base/system/arch.h"
namespace webrtc {
std::string AvailableCpuFeatures::ToString() const {
char buf[64];
SimpleStringBuilder builder(buf);
bool first = true;
if (sse2) {
builder << (first ? "SSE2" : "_SSE2");
first = false;
}
if (avx2) {
builder << (first ? "AVX2" : "_AVX2");
first = false;
}
if (neon) {
builder << (first ? "NEON" : "_NEON");
first = false;
}
if (first) {
return "none";
}
return builder.str();
}
// Detects available CPU features.
AvailableCpuFeatures GetAvailableCpuFeatures() {
#if defined(WEBRTC_ARCH_X86_FAMILY)
return {/*sse2=*/cpu_info::Supports(cpu_info::ISA::kSSE2),
/*avx2=*/cpu_info::Supports(cpu_info::ISA::kAVX2),
/*neon=*/false};
#elif defined(WEBRTC_HAS_NEON)
return {/*sse2=*/false,
/*avx2=*/false,
/*neon=*/true};
#else
return {/*sse2=*/false,
/*avx2=*/false,
/*neon=*/false};
#endif
}
AvailableCpuFeatures NoAvailableCpuFeatures() {
return {/*sse2=*/false, /*avx2=*/false, /*neon=*/false};
}
} // namespace webrtc
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