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Side by Side Diff: webrtc/modules/audio_coding/neteq/dsp_helper.h

Issue 1948483002: Using ring buffer for AudioVector in NetEq. (Closed) Base URL: https://chromium.googlesource.com/external/webrtc.git@master
Patch Set: Created 4 years, 7 months ago
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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
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60 int16_t* output); 60 int16_t* output);
61 61
62 // Same as above, but with the samples of |signal| being modified in-place. 62 // Same as above, but with the samples of |signal| being modified in-place.
63 static int RampSignal(int16_t* signal, 63 static int RampSignal(int16_t* signal,
64 size_t length, 64 size_t length,
65 int factor, 65 int factor,
66 int increment); 66 int increment);
67 67
68 // Same as above, but processes |length| samples from |signal|, starting at 68 // Same as above, but processes |length| samples from |signal|, starting at
69 // |start_index|. 69 // |start_index|.
70 static int RampSignal(AudioVector* signal,
71 size_t start_index,
72 size_t length,
73 int factor,
74 int increment);
75
76 // Same as above, but processes |length| samples from |signal|, starting at
77 // |start_index|.
70 static int RampSignal(AudioMultiVector* signal, 78 static int RampSignal(AudioMultiVector* signal,
71 size_t start_index, 79 size_t start_index,
72 size_t length, 80 size_t length,
73 int factor, 81 int factor,
74 int increment); 82 int increment);
75 83
76 // Peak detection with parabolic fit. Looks for |num_peaks| maxima in |data|, 84 // Peak detection with parabolic fit. Looks for |num_peaks| maxima in |data|,
77 // having length |data_length| and sample rate multiplier |fs_mult|. The peak 85 // having length |data_length| and sample rate multiplier |fs_mult|. The peak
78 // locations and values are written to the arrays |peak_index| and 86 // locations and values are written to the arrays |peak_index| and
79 // |peak_value|, respectively. Both arrays must hold at least |num_peaks| 87 // |peak_value|, respectively. Both arrays must hold at least |num_peaks|
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128 136
129 private: 137 private:
130 // Table of constants used in method DspHelper::ParabolicFit(). 138 // Table of constants used in method DspHelper::ParabolicFit().
131 static const int16_t kParabolaCoefficients[17][3]; 139 static const int16_t kParabolaCoefficients[17][3];
132 140
133 RTC_DISALLOW_COPY_AND_ASSIGN(DspHelper); 141 RTC_DISALLOW_COPY_AND_ASSIGN(DspHelper);
134 }; 142 };
135 143
136 } // namespace webrtc 144 } // namespace webrtc
137 #endif // WEBRTC_MODULES_AUDIO_CODING_NETEQ_DSP_HELPER_H_ 145 #endif // WEBRTC_MODULES_AUDIO_CODING_NETEQ_DSP_HELPER_H_
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