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comparison: content/media/webaudio/WebAudioUtils.cpp
content/media/webaudio/WebAudioUtils.cpp
- branch
- TOR_BUG_9701
- changeset 13
- 44a2da4a2ab2
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| -1:000000000000 | 0:3553fc557bd6 |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* vim:set ts=2 sw=2 sts=2 et cindent: */ | |
| 3 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 #include "WebAudioUtils.h" | |
| 8 #include "AudioNodeStream.h" | |
| 9 #include "AudioParamTimeline.h" | |
| 10 #include "blink/HRTFDatabaseLoader.h" | |
| 11 #include "speex/speex_resampler.h" | |
| 12 | |
| 13 namespace mozilla { | |
| 14 | |
| 15 namespace dom { | |
| 16 | |
| 17 struct ConvertTimeToTickHelper | |
| 18 { | |
| 19 AudioNodeStream* mSourceStream; | |
| 20 AudioNodeStream* mDestinationStream; | |
| 21 | |
| 22 static int64_t Convert(double aTime, void* aClosure) | |
| 23 { | |
| 24 ConvertTimeToTickHelper* This = static_cast<ConvertTimeToTickHelper*> (aClosure); | |
| 25 MOZ_ASSERT(This->mSourceStream->SampleRate() == This->mDestinationStream->SampleRate()); | |
| 26 return This->mSourceStream-> | |
| 27 TicksFromDestinationTime(This->mDestinationStream, aTime); | |
| 28 } | |
| 29 }; | |
| 30 | |
| 31 void | |
| 32 WebAudioUtils::ConvertAudioParamToTicks(AudioParamTimeline& aParam, | |
| 33 AudioNodeStream* aSource, | |
| 34 AudioNodeStream* aDest) | |
| 35 { | |
| 36 MOZ_ASSERT(!aSource || aSource->SampleRate() == aDest->SampleRate()); | |
| 37 ConvertTimeToTickHelper ctth; | |
| 38 ctth.mSourceStream = aSource; | |
| 39 ctth.mDestinationStream = aDest; | |
| 40 aParam.ConvertEventTimesToTicks(ConvertTimeToTickHelper::Convert, &ctth, aDest->SampleRate()); | |
| 41 } | |
| 42 | |
| 43 void | |
| 44 WebAudioUtils::Shutdown() | |
| 45 { | |
| 46 WebCore::HRTFDatabaseLoader::shutdown(); | |
| 47 } | |
| 48 | |
| 49 int | |
| 50 WebAudioUtils::SpeexResamplerProcess(SpeexResamplerState* aResampler, | |
| 51 uint32_t aChannel, | |
| 52 const float* aIn, uint32_t* aInLen, | |
| 53 float* aOut, uint32_t* aOutLen) | |
| 54 { | |
| 55 #ifdef MOZ_SAMPLE_TYPE_S16 | |
| 56 nsAutoTArray<AudioDataValue, WEBAUDIO_BLOCK_SIZE*4> tmp1; | |
| 57 nsAutoTArray<AudioDataValue, WEBAUDIO_BLOCK_SIZE*4> tmp2; | |
| 58 tmp1.SetLength(*aInLen); | |
| 59 tmp2.SetLength(*aOutLen); | |
| 60 ConvertAudioSamples(aIn, tmp1.Elements(), *aInLen); | |
| 61 int result = speex_resampler_process_int(aResampler, aChannel, tmp1.Elements(), aInLen, tmp2.Elements(), aOutLen); | |
| 62 ConvertAudioSamples(tmp2.Elements(), aOut, *aOutLen); | |
| 63 return result; | |
| 64 #else | |
| 65 return speex_resampler_process_float(aResampler, aChannel, aIn, aInLen, aOut, aOutLen); | |
| 66 #endif | |
| 67 } | |
| 68 | |
| 69 int | |
| 70 WebAudioUtils::SpeexResamplerProcess(SpeexResamplerState* aResampler, | |
| 71 uint32_t aChannel, | |
| 72 const int16_t* aIn, uint32_t* aInLen, | |
| 73 float* aOut, uint32_t* aOutLen) | |
| 74 { | |
| 75 nsAutoTArray<AudioDataValue, WEBAUDIO_BLOCK_SIZE*4> tmp; | |
| 76 #ifdef MOZ_SAMPLE_TYPE_S16 | |
| 77 tmp.SetLength(*aOutLen); | |
| 78 int result = speex_resampler_process_int(aResampler, aChannel, aIn, aInLen, tmp.Elements(), aOutLen); | |
| 79 ConvertAudioSamples(tmp.Elements(), aOut, *aOutLen); | |
| 80 return result; | |
| 81 #else | |
| 82 tmp.SetLength(*aInLen); | |
| 83 ConvertAudioSamples(aIn, tmp.Elements(), *aInLen); | |
| 84 int result = speex_resampler_process_float(aResampler, aChannel, tmp.Elements(), aInLen, aOut, aOutLen); | |
| 85 return result; | |
| 86 #endif | |
| 87 } | |
| 88 | |
| 89 int | |
| 90 WebAudioUtils::SpeexResamplerProcess(SpeexResamplerState* aResampler, | |
| 91 uint32_t aChannel, | |
| 92 const int16_t* aIn, uint32_t* aInLen, | |
| 93 int16_t* aOut, uint32_t* aOutLen) | |
| 94 { | |
| 95 #ifdef MOZ_SAMPLE_TYPE_S16 | |
| 96 return speex_resampler_process_int(aResampler, aChannel, aIn, aInLen, aOut, aOutLen); | |
| 97 #else | |
| 98 nsAutoTArray<AudioDataValue, WEBAUDIO_BLOCK_SIZE*4> tmp1; | |
| 99 nsAutoTArray<AudioDataValue, WEBAUDIO_BLOCK_SIZE*4> tmp2; | |
| 100 tmp1.SetLength(*aInLen); | |
| 101 tmp2.SetLength(*aOutLen); | |
| 102 ConvertAudioSamples(aIn, tmp1.Elements(), *aInLen); | |
| 103 int result = speex_resampler_process_float(aResampler, aChannel, tmp1.Elements(), aInLen, tmp2.Elements(), aOutLen); | |
| 104 ConvertAudioSamples(tmp2.Elements(), aOut, *aOutLen); | |
| 105 return result; | |
| 106 #endif | |
| 107 } | |
| 108 | |
| 109 } | |
| 110 } |
