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1 /* | 1 /* |
2 * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license | 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 | 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 | 6 * tree. An additional intellectual property rights grant can be found |
7 * in the file PATENTS. All contributing project authors may | 7 * in the file PATENTS. All contributing project authors may |
8 * be found in the AUTHORS file in the root of the source tree. | 8 * be found in the AUTHORS file in the root of the source tree. |
9 */ | 9 */ |
10 | 10 |
11 #ifndef WEBRTC_MODULES_AUDIO_PROCESSING_AEC_AEC_RESAMPLER_H_ | 11 #ifndef WEBRTC_MODULES_AUDIO_PROCESSING_AEC_AEC_RESAMPLER_H_ |
12 #define WEBRTC_MODULES_AUDIO_PROCESSING_AEC_AEC_RESAMPLER_H_ | 12 #define WEBRTC_MODULES_AUDIO_PROCESSING_AEC_AEC_RESAMPLER_H_ |
13 | 13 |
14 #include "webrtc/modules/audio_processing/aec/aec_core.h" | 14 #include "webrtc/modules/audio_processing/aec/aec_core.h" |
15 | 15 |
16 enum { | 16 enum { kResamplingDelay = 1 }; |
17 kResamplingDelay = 1 | 17 enum { kResamplerBufferSize = FRAME_LEN * 4 }; |
18 }; | |
19 enum { | |
20 kResamplerBufferSize = FRAME_LEN * 4 | |
21 }; | |
22 | 18 |
23 // Unless otherwise specified, functions return 0 on success and -1 on error. | 19 // Unless otherwise specified, functions return 0 on success and -1 on error. |
24 void* WebRtcAec_CreateResampler(); // Returns NULL on error. | 20 void* WebRtcAec_CreateResampler(); // Returns NULL on error. |
25 int WebRtcAec_InitResampler(void* resampInst, int deviceSampleRateHz); | 21 int WebRtcAec_InitResampler(void* resampInst, int deviceSampleRateHz); |
26 void WebRtcAec_FreeResampler(void* resampInst); | 22 void WebRtcAec_FreeResampler(void* resampInst); |
27 | 23 |
28 // Estimates skew from raw measurement. | 24 // Estimates skew from raw measurement. |
29 int WebRtcAec_GetSkew(void* resampInst, int rawSkew, float* skewEst); | 25 int WebRtcAec_GetSkew(void* resampInst, int rawSkew, float* skewEst); |
30 | 26 |
31 // Resamples input using linear interpolation. | 27 // Resamples input using linear interpolation. |
32 void WebRtcAec_ResampleLinear(void* resampInst, | 28 void WebRtcAec_ResampleLinear(void* resampInst, |
33 const float* inspeech, | 29 const float* inspeech, |
34 size_t size, | 30 size_t size, |
35 float skew, | 31 float skew, |
36 float* outspeech, | 32 float* outspeech, |
37 size_t* size_out); | 33 size_t* size_out); |
38 | 34 |
39 #endif // WEBRTC_MODULES_AUDIO_PROCESSING_AEC_AEC_RESAMPLER_H_ | 35 #endif // WEBRTC_MODULES_AUDIO_PROCESSING_AEC_AEC_RESAMPLER_H_ |
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