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Drop 48kHz sample rate support in the APM for ARM architecture

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The 3-band splitting filter is highly complex on this architecture. Today this is not a problem, because on those platforms we mostly use AECM which forces us to downsample to 16kHz anyway, but this is a way of guarding against it. In the long term we want to optimize the 3-band splitting filter for ARM architectures, but for now we can just disable it.

Review URL: https://codereview.webrtc.org/1766103002

Cr-Commit-Position: refs/heads/master@{#11900}
This commit is contained in:
aluebs 2016-03-08 01:48:17 -08:00 committed by Commit bot
parent 4510bbd5fc
commit 4c279b852c
1 changed files with 4 additions and 0 deletions
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4
webrtc/modules/audio_processing/audio_processing_impl.cc
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@ -112,8 +112,12 @@ struct AudioProcessingImpl::ApmPrivateSubmodules {
const int AudioProcessing::kNativeSampleRatesHz[] = {
AudioProcessing::kSampleRate8kHz,
AudioProcessing::kSampleRate16kHz,
#ifdef WEBRTC_ARCH_ARM_FAMILY
AudioProcessing::kSampleRate32kHz};
#else
AudioProcessing::kSampleRate32kHz,
AudioProcessing::kSampleRate48kHz};
#endif // WEBRTC_ARCH_ARM_FAMILY
const size_t AudioProcessing::kNumNativeSampleRates =
arraysize(AudioProcessing::kNativeSampleRatesHz);
const int AudioProcessing::kMaxNativeSampleRateHz = AudioProcessing::