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Diffstat (limited to 'src/modules/audio_processing/aec/aec_rdft.h')
| -rw-r--r-- | src/modules/audio_processing/aec/aec_rdft.h | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/src/modules/audio_processing/aec/aec_rdft.h b/src/modules/audio_processing/aec/aec_rdft.h new file mode 100644 index 0000000000..91bedc9fc7 --- /dev/null +++ b/src/modules/audio_processing/aec/aec_rdft.h @@ -0,0 +1,57 @@ +/* + * Copyright (c) 2011 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. + */ + +#ifndef WEBRTC_MODULES_AUDIO_PROCESSING_AEC_MAIN_SOURCE_AEC_RDFT_H_ +#define WEBRTC_MODULES_AUDIO_PROCESSING_AEC_MAIN_SOURCE_AEC_RDFT_H_ + +// These intrinsics were unavailable before VS 2008. +// TODO(andrew): move to a common file. +#if defined(_MSC_VER) && _MSC_VER < 1500 +#include <emmintrin.h> +static __inline __m128 _mm_castsi128_ps(__m128i a) { return *(__m128*)&a; } +static __inline __m128i _mm_castps_si128(__m128 a) { return *(__m128i*)&a; } +#endif + +#ifdef _MSC_VER /* visual c++ */ +# define ALIGN16_BEG __declspec(align(16)) +# define ALIGN16_END +#else /* gcc or icc */ +# define ALIGN16_BEG +# define ALIGN16_END __attribute__((aligned(16))) +#endif + +// constants shared by all paths (C, SSE2). +extern float rdft_w[64]; +// constants used by the C path. +extern float rdft_wk3ri_first[32]; +extern float rdft_wk3ri_second[32]; +// constants used by SSE2 but initialized in C path. +extern float rdft_wk1r[32]; +extern float rdft_wk2r[32]; +extern float rdft_wk3r[32]; +extern float rdft_wk1i[32]; +extern float rdft_wk2i[32]; +extern float rdft_wk3i[32]; +extern float cftmdl_wk1r[4]; + +// code path selection function pointers +typedef void (*rft_sub_128_t)(float *a); +extern rft_sub_128_t rftfsub_128; +extern rft_sub_128_t rftbsub_128; +extern rft_sub_128_t cft1st_128; +extern rft_sub_128_t cftmdl_128; + +// entry points +void aec_rdft_init(void); +void aec_rdft_init_sse2(void); +void aec_rdft_forward_128(float *a); +void aec_rdft_inverse_128(float *a); + +#endif // WEBRTC_MODULES_AUDIO_PROCESSING_AEC_MAIN_SOURCE_AEC_RDFT_H_ |