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| 1 /* | 1 /* |
| 2 * Copyright (C) 2011, Google Inc. All rights reserved. | 2 * Copyright (C) 2011, Google Inc. All rights reserved. |
| 3 * | 3 * |
| 4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
| 5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
| 6 * are met: | 6 * are met: |
| 7 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
| 8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
| 9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
| 10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
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| 63 ProcessCurve(source, destination, frames_to_process); | 63 ProcessCurve(source, destination, frames_to_process); |
| 64 break; | 64 break; |
| 65 case WaveShaperProcessor::kOverSample2x: | 65 case WaveShaperProcessor::kOverSample2x: |
| 66 ProcessCurve2x(source, destination, frames_to_process); | 66 ProcessCurve2x(source, destination, frames_to_process); |
| 67 break; | 67 break; |
| 68 case WaveShaperProcessor::kOverSample4x: | 68 case WaveShaperProcessor::kOverSample4x: |
| 69 ProcessCurve4x(source, destination, frames_to_process); | 69 ProcessCurve4x(source, destination, frames_to_process); |
| 70 break; | 70 break; |
| 71 | 71 |
| 72 default: | 72 default: |
| 73 ASSERT_NOT_REACHED(); | 73 NOTREACHED(); |
| 74 } | 74 } |
| 75 } | 75 } |
| 76 | 76 |
| 77 void WaveShaperDSPKernel::ProcessCurve(const float* source, | 77 void WaveShaperDSPKernel::ProcessCurve(const float* source, |
| 78 float* destination, | 78 float* destination, |
| 79 size_t frames_to_process) { | 79 size_t frames_to_process) { |
| 80 DCHECK(source); | 80 DCHECK(source); |
| 81 DCHECK(destination); | 81 DCHECK(destination); |
| 82 DCHECK(GetWaveShaperProcessor()); | 82 DCHECK(GetWaveShaperProcessor()); |
| 83 | 83 |
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| 197 latency_frames += down_sampler_->LatencyFrames(); | 197 latency_frames += down_sampler_->LatencyFrames(); |
| 198 | 198 |
| 199 // Account for second stage upsampling. | 199 // Account for second stage upsampling. |
| 200 // and divide by 2 to get back down to the regular sample-rate. | 200 // and divide by 2 to get back down to the regular sample-rate. |
| 201 size_t latency_frames2 = | 201 size_t latency_frames2 = |
| 202 (up_sampler2_->LatencyFrames() + down_sampler2_->LatencyFrames()) / 2; | 202 (up_sampler2_->LatencyFrames() + down_sampler2_->LatencyFrames()) / 2; |
| 203 latency_frames += latency_frames2; | 203 latency_frames += latency_frames2; |
| 204 break; | 204 break; |
| 205 } | 205 } |
| 206 default: | 206 default: |
| 207 ASSERT_NOT_REACHED(); | 207 NOTREACHED(); |
| 208 } | 208 } |
| 209 | 209 |
| 210 return static_cast<double>(latency_frames) / SampleRate(); | 210 return static_cast<double>(latency_frames) / SampleRate(); |
| 211 } | 211 } |
| 212 | 212 |
| 213 } // namespace blink | 213 } // namespace blink |
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