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1 /* | 1 /* |
2 * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2016 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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61 constexpr float kFixedEchoPathGain = 100; | 61 constexpr float kFixedEchoPathGain = 100; |
62 | 62 |
63 constexpr size_t kRenderDelayBufferSize = | 63 constexpr size_t kRenderDelayBufferSize = |
64 (3 * kDownsampledRenderBufferSize) / (4 * kSubBlockSize); | 64 (3 * kDownsampledRenderBufferSize) / (4 * kSubBlockSize); |
65 | 65 |
66 constexpr size_t kMaxApiCallsJitterBlocks = 20; | 66 constexpr size_t kMaxApiCallsJitterBlocks = 20; |
67 constexpr size_t kRenderTransferQueueSize = kMaxApiCallsJitterBlocks / 2; | 67 constexpr size_t kRenderTransferQueueSize = kMaxApiCallsJitterBlocks / 2; |
68 static_assert(2 * kRenderTransferQueueSize >= kMaxApiCallsJitterBlocks, | 68 static_assert(2 * kRenderTransferQueueSize >= kMaxApiCallsJitterBlocks, |
69 "Requirement to ensure buffer overflow detection"); | 69 "Requirement to ensure buffer overflow detection"); |
70 | 70 |
| 71 // TODO(peah): Integrate this with how it is done inside audio_processing_impl. |
71 constexpr size_t NumBandsForRate(int sample_rate_hz) { | 72 constexpr size_t NumBandsForRate(int sample_rate_hz) { |
72 return static_cast<size_t>(sample_rate_hz == 8000 ? 1 | 73 return static_cast<size_t>(sample_rate_hz == 8000 ? 1 |
73 : sample_rate_hz / 16000); | 74 : sample_rate_hz / 16000); |
74 } | 75 } |
75 constexpr int LowestBandRate(int sample_rate_hz) { | 76 constexpr int LowestBandRate(int sample_rate_hz) { |
76 return sample_rate_hz == 8000 ? sample_rate_hz : 16000; | 77 return sample_rate_hz == 8000 ? sample_rate_hz : 16000; |
77 } | 78 } |
78 | 79 |
79 constexpr bool ValidFullBandRate(int sample_rate_hz) { | 80 constexpr bool ValidFullBandRate(int sample_rate_hz) { |
80 return sample_rate_hz == 8000 || sample_rate_hz == 16000 || | 81 return sample_rate_hz == 8000 || sample_rate_hz == 16000 || |
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104 static_assert(ValidFullBandRate(32000), | 105 static_assert(ValidFullBandRate(32000), |
105 "Test that 32 kHz is a valid sample rate"); | 106 "Test that 32 kHz is a valid sample rate"); |
106 static_assert(ValidFullBandRate(48000), | 107 static_assert(ValidFullBandRate(48000), |
107 "Test that 48 kHz is a valid sample rate"); | 108 "Test that 48 kHz is a valid sample rate"); |
108 static_assert(!ValidFullBandRate(8001), | 109 static_assert(!ValidFullBandRate(8001), |
109 "Test that 8001 Hz is not a valid sample rate"); | 110 "Test that 8001 Hz is not a valid sample rate"); |
110 | 111 |
111 } // namespace webrtc | 112 } // namespace webrtc |
112 | 113 |
113 #endif // WEBRTC_MODULES_AUDIO_PROCESSING_AEC3_AEC3_COMMON_H_ | 114 #endif // WEBRTC_MODULES_AUDIO_PROCESSING_AEC3_AEC3_COMMON_H_ |
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