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gerrit.openfyde.cn / webrtc.googlesource.com / src / e305d956c0717a28ca88cd8547e5b310dfa74594 / . / webrtc / modules / audio_processing / aec / aec_rdft.h
blob: d83eb27d83f3f21dc4beb365f470e80b7f4125c4 [file] [log] [blame]
niklase@google.com470e71d2011-07-07 08:21:25 +0000[diff] [blame]1/*
2 * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
3 *
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
9 */
10
ajm@google.comce7c2a22011-08-04 01:50:00 +0000[diff] [blame]11#ifndef WEBRTC_MODULES_AUDIO_PROCESSING_AEC_MAIN_SOURCE_AEC_RDFT_H_
12#define WEBRTC_MODULES_AUDIO_PROCESSING_AEC_MAIN_SOURCE_AEC_RDFT_H_
13
bjornv@webrtc.org555fc782014-07-10 08:03:11 +0000[diff] [blame]14#include "webrtc/modules/audio_processing/aec/aec_common.h"
15
andrew@webrtc.org86b85db2011-09-19 18:48:25 +0000[diff] [blame]16// These intrinsics were unavailable before VS 2008.
17// TODO(andrew): move to a common file.
18#if defined(_MSC_VER) && _MSC_VER < 1500
19#include <emmintrin.h>
20static __inline __m128 _mm_castsi128_ps(__m128i a) { return *(__m128*)&a; }
21static __inline __m128i _mm_castps_si128(__m128 a) { return *(__m128i*)&a; }
22#endif
23
andrew@webrtc.orga1ad8442014-08-18 19:02:51 +0000[diff] [blame]24// Constants shared by all paths (C, SSE2, NEON).
25extern const float rdft_w[64];
26// Constants used by the C path.
27extern const float rdft_wk3ri_first[16];
28extern const float rdft_wk3ri_second[16];
29// Constants used by SSE2 and NEON but initialized in the C path.
30extern ALIGN16_BEG const float ALIGN16_END rdft_wk1r[32];
31extern ALIGN16_BEG const float ALIGN16_END rdft_wk2r[32];
32extern ALIGN16_BEG const float ALIGN16_END rdft_wk3r[32];
33extern ALIGN16_BEG const float ALIGN16_END rdft_wk1i[32];
34extern ALIGN16_BEG const float ALIGN16_END rdft_wk2i[32];
35extern ALIGN16_BEG const float ALIGN16_END rdft_wk3i[32];
36extern ALIGN16_BEG const float ALIGN16_END cftmdl_wk1r[4];
niklase@google.com470e71d2011-07-07 08:21:25 +0000[diff] [blame]37
38// code path selection function pointers
pbos@webrtc.orgf832a6d2014-12-18 09:56:09 +0000[diff] [blame]39typedef void (*RftSub128)(float* a);
40extern RftSub128 rftfsub_128;
41extern RftSub128 rftbsub_128;
42extern RftSub128 cft1st_128;
43extern RftSub128 cftmdl_128;
44extern RftSub128 cftfsub_128;
45extern RftSub128 cftbsub_128;
46extern RftSub128 bitrv2_128;
niklase@google.com470e71d2011-07-07 08:21:25 +0000[diff] [blame]47
48// entry points
49void aec_rdft_init(void);
50void aec_rdft_init_sse2(void);
andrew@webrtc.org13b2d462013-10-08 23:41:42 +0000[diff] [blame]51void aec_rdft_forward_128(float* a);
52void aec_rdft_inverse_128(float* a);
ajm@google.comce7c2a22011-08-04 01:50:00 +0000[diff] [blame]53
andrew@webrtc.orgc0907ef2014-02-21 00:13:31 +0000[diff] [blame]54#if defined(MIPS_FPU_LE)
55void aec_rdft_init_mips(void);
56#endif
paskoe305d952016-05-17 10:56:40 -0700[diff] [blame^]57#if defined(WEBRTC_HAS_NEON)
bjornv@webrtc.orgcd9b90a2014-06-30 12:05:18 +0000[diff] [blame]58void aec_rdft_init_neon(void);
59#endif
andrew@webrtc.orgc0907ef2014-02-21 00:13:31 +0000[diff] [blame]60
ajm@google.comce7c2a22011-08-04 01:50:00 +0000[diff] [blame]61#endif // WEBRTC_MODULES_AUDIO_PROCESSING_AEC_MAIN_SOURCE_AEC_RDFT_H_