e305d956c0
Chrome does not detect NEON instruction set at runtime in WebRTC code starting with M50, which is now in Stable. Remove support for runtime detection for simplicity. The only remaining piece of Chrome that will continue to depend on runtime detection is /net, where devices with _broken_ neon support are also detected, and it is not configurable via GYP/GN. BUG=522035 NOPRESUBMIT=true Review-Url: https://codereview.webrtc.org/1955413003 Cr-Commit-Position: refs/heads/master@{#12778}
62 lines
2.2 KiB
C
62 lines
2.2 KiB
C
/*
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* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef WEBRTC_MODULES_AUDIO_PROCESSING_AEC_MAIN_SOURCE_AEC_RDFT_H_
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#define WEBRTC_MODULES_AUDIO_PROCESSING_AEC_MAIN_SOURCE_AEC_RDFT_H_
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#include "webrtc/modules/audio_processing/aec/aec_common.h"
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// These intrinsics were unavailable before VS 2008.
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// TODO(andrew): move to a common file.
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#if defined(_MSC_VER) && _MSC_VER < 1500
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#include <emmintrin.h>
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static __inline __m128 _mm_castsi128_ps(__m128i a) { return *(__m128*)&a; }
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static __inline __m128i _mm_castps_si128(__m128 a) { return *(__m128i*)&a; }
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#endif
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// Constants shared by all paths (C, SSE2, NEON).
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extern const float rdft_w[64];
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// Constants used by the C path.
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extern const float rdft_wk3ri_first[16];
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extern const float rdft_wk3ri_second[16];
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// Constants used by SSE2 and NEON but initialized in the C path.
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extern ALIGN16_BEG const float ALIGN16_END rdft_wk1r[32];
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extern ALIGN16_BEG const float ALIGN16_END rdft_wk2r[32];
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extern ALIGN16_BEG const float ALIGN16_END rdft_wk3r[32];
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extern ALIGN16_BEG const float ALIGN16_END rdft_wk1i[32];
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extern ALIGN16_BEG const float ALIGN16_END rdft_wk2i[32];
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extern ALIGN16_BEG const float ALIGN16_END rdft_wk3i[32];
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extern ALIGN16_BEG const float ALIGN16_END cftmdl_wk1r[4];
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// code path selection function pointers
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typedef void (*RftSub128)(float* a);
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extern RftSub128 rftfsub_128;
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extern RftSub128 rftbsub_128;
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extern RftSub128 cft1st_128;
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extern RftSub128 cftmdl_128;
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extern RftSub128 cftfsub_128;
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extern RftSub128 cftbsub_128;
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extern RftSub128 bitrv2_128;
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// entry points
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void aec_rdft_init(void);
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void aec_rdft_init_sse2(void);
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void aec_rdft_forward_128(float* a);
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void aec_rdft_inverse_128(float* a);
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#if defined(MIPS_FPU_LE)
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void aec_rdft_init_mips(void);
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#endif
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#if defined(WEBRTC_HAS_NEON)
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void aec_rdft_init_neon(void);
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#endif
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#endif // WEBRTC_MODULES_AUDIO_PROCESSING_AEC_MAIN_SOURCE_AEC_RDFT_H_
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