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/*
* Copyright (c) 2017 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 "common_audio/fir_filter_factory.h"
#include "common_audio/fir_filter_c.h"
#include "rtc_base/checks.h"
#include "rtc_base/system/arch.h"
#if defined(WEBRTC_HAS_NEON)
#include "common_audio/fir_filter_neon.h"
#elif defined(WEBRTC_ARCH_X86_FAMILY)
#include "common_audio/fir_filter_sse.h"
#include "system_wrappers/include/cpu_features_wrapper.h" // kSSE2, WebRtc_G...
#endif
namespace webrtc {
FIRFilter* CreateFirFilter(const float* coefficients,
size_t coefficients_length,
size_t max_input_length) {
if (!coefficients || coefficients_length <= 0 || max_input_length <= 0) {
RTC_NOTREACHED();
return nullptr;
}
FIRFilter* filter = nullptr;
// If we know the minimum architecture at compile time, avoid CPU detection.
#if defined(WEBRTC_ARCH_X86_FAMILY)
#if defined(__SSE2__)
filter =
new FIRFilterSSE2(coefficients, coefficients_length, max_input_length);
#else
// x86 CPU detection required.
if (WebRtc_GetCPUInfo(kSSE2)) {
filter =
new FIRFilterSSE2(coefficients, coefficients_length, max_input_length);
} else {
filter = new FIRFilterC(coefficients, coefficients_length);
}
#endif
#elif defined(WEBRTC_HAS_NEON)
filter =
new FIRFilterNEON(coefficients, coefficients_length, max_input_length);
#else
filter = new FIRFilterC(coefficients, coefficients_length);
#endif
return filter;
}
} // namespace webrtc
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