46299 2010-09-22 13:31:24 -0700 Add HRTFPanner files 2010-10-08 19:30:44 -0700 1 1 1 Unclassified WebKit New Bugs 528+ (Nightly build) Other OS X 10.5 RESOLVED FIXED P2 Normal --- 0 crogers webkit-unassigned cmarrin commit-queue dglazkov eric.carlson jamesr jer.noble kbr simon.fraser oldest_to_newest 283205 0 crogers 2010-09-22 13:31:24 -0700 Add HRTFPanner files 283206 1 68431 crogers 2010-09-22 13:32:58 -0700 Created attachment 68431 Patch 283207 2 crogers 2010-09-22 13:33:59 -0700 Spatialized panning algorithm. See more details in the audio specification: http://chromium.googlecode.com/svn/trunk/samples/audio/specification/specification.html#Spatialization-section 284835 3 68786 crogers 2010-09-24 16:26:50 -0700 Created attachment 68786 Patch 284836 4 crogers 2010-09-24 16:28:01 -0700 Uploaded new patch to address small change in HRTFDatabaseLoader API 285770 5 68967 crogers 2010-09-27 14:57:55 -0700 Created attachment 68967 Patch 285967 6 69002 crogers 2010-09-27 17:53:03 -0700 Created attachment 69002 Patch 285970 7 69002 jamesr 2010-09-27 17:57:58 -0700 Comment on attachment 69002 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=69002&action=review > WebCore/platform/audio/HRTFPanner.cpp:47 > +const double HRTFPanner::MaxDelayTime = 0.012; // 12ms why 12? add the unit to the name - looks like it's seconds here so perhaps MaxDelayTimeSeconds > WebCore/platform/audio/HRTFPanner.cpp:170 > + // If we have a stereo input, implement a strange kind of panning with left source processed by left HRTF, and right source by right HRTF. Should it be an error at a higher level to connect a stereo input to this sort of node? That is an odd sounding pan. > WebCore/platform/audio/HRTFPanner.h:43 > + HRTFPanner(double sampleRate) one-arg constructor needs to be explicit could the constructor definition be moved to the .cpp? I'm a little concerned about inlining the c'tor for FFTConvolver and DelayDSPKernel without know how big they are please declare a virtual d'tor and define it in the .cpp > WebCore/platform/audio/HRTFPanner.h:71 > + // For de-zippering > + bool m_isFirstRender; > + int m_azimuthIndex; What's de-zippering? Comments should be sentences 286567 8 69117 crogers 2010-09-28 15:14:13 -0700 Created attachment 69117 Patch 286571 9 69002 crogers 2010-09-28 15:20:51 -0700 Comment on attachment 69002 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=69002&action=review >> WebCore/platform/audio/HRTFPanner.cpp:47 >> +const double HRTFPanner::MaxDelayTime = 0.012; // 12ms > > why 12? > > add the unit to the name - looks like it's seconds here so perhaps MaxDelayTimeSeconds FIXED: I actually measured the largest delay time in all the HRTFKernels and picked a good round value higher than this. I added a comment here. >> WebCore/platform/audio/HRTFPanner.cpp:170 >> + // If we have a stereo input, implement a strange kind of panning with left source processed by left HRTF, and right source by right HRTF. > > Should it be an error at a higher level to connect a stereo input to this sort of node? That is an odd sounding pan. No, I don't think so. Although it is more unusual than panning a mono source, it is expected to be able to pan a stereo source to stereo as well, and it results in a reasonable effect. >> WebCore/platform/audio/HRTFPanner.h:43 >> + HRTFPanner(double sampleRate) > > one-arg constructor needs to be explicit > > could the constructor definition be moved to the .cpp? I'm a little concerned about inlining the c'tor for FFTConvolver and DelayDSPKernel without know how big they are > > please declare a virtual d'tor and define it in the .cpp FIXED: I don't think the virtual destructor is necessary since it's empty and will be implicitly generated, but I added it anyway. >> WebCore/platform/audio/HRTFPanner.h:71 >> + int m_azimuthIndex; > > What's de-zippering? > > Comments should be sentences FIXED 286611 10 69117 jamesr 2010-09-28 16:15:22 -0700 Comment on attachment 69117 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=69117&action=review Nearly there, few more small things. Where is DelayDSPKernel defined? I don't see it in my tree. > WebCore/platform/audio/HRTFPanner.cpp:117 > + // IRCAM HRTF azimuths which we're loading are reversed from the panner's notion... Still not technically a sentence. If this is normalization for the way our data files are formatted, why is it being done here? > WebCore/platform/audio/HRTFPanner.cpp:121 > + if (azimuth < 0) > + azimuth += 360.0; // make positive Not a sentence. Why is this needed? > WebCore/platform/audio/HRTFPanner.cpp:141 > + bool isAzimuthGood = azimuth >= 0.0 && azimuth <= 360.0; > + ASSERT(isAzimuthGood); > + if (!isAzimuthGood) { > + outputBus->zero(); > + return; > + } > + > + int numberOfAzimuths = database->numberOfAzimuths(); > + const double angleBetweenAzimuths = 360.0 / numberOfAzimuths; > + > + // Calculate the azimuth index and the blend (0 -> 1) for interpolation. > + double desiredAzimuthIndexF = azimuth / angleBetweenAzimuths; > + int desiredAzimuthIndex = static_cast<int>(desiredAzimuthIndexF); > + double azimuthBlend = desiredAzimuthIndexF - static_cast<double>(desiredAzimuthIndex); > + > + // We don't immediately start using this azimuth index, but instead approach this index from the last index we rendered at. > + // This minimizes the clicks and graininess for moving sources which occur otherwise. > + desiredAzimuthIndex = max(0, desiredAzimuthIndex); > + desiredAzimuthIndex = min(numberOfAzimuths - 1, desiredAzimuthIndex); We don't typically use suffixes like F for floating point values in WebKit. This segment feels like it should be in a helper function (since this function is a bit on the long side). Are the min/max needed given that we've already checked that azimuth is in the range [0.0,360.0] ? > WebCore/platform/audio/HRTFPanner.cpp:174 > + // Get the HRTFKernels and interpolated delays. > + nit: don't need the extra newline here > WebCore/platform/audio/HRTFPanner.cpp:198 > + // Normally, we'll just be dealing with mono sources. > + // If we have a stereo input, implement a strange kind of panning with left source processed by left HRTF, and right source by right HRTF. > + AudioChannel* channelL = inputBus->channelByType(AudioBus::ChannelLeft); > + AudioChannel* channelR = numInputChannels > 1 ? inputBus->channelByType(AudioBus::ChannelRight) : 0; > + > + // Get source and destination pointers. > + float* sourceL = channelL->data(); > + float* sourceR = numInputChannels > 1 ? channelR->data() : sourceL; > + float* destinationL = outputBus->channelByType(AudioBus::ChannelLeft)->data(); > + float* destinationR = outputBus->channelByType(AudioBus::ChannelRight)->data(); Should some of this be outside the loop? > WebCore/platform/audio/HRTFPanner.h:32 > +#include "DelayProcessor.h" I don't see this header in my checkout. Does it define DelayDSPKernel? Should you include DelayDSPKernel.h directly (once it exists)? > WebCore/platform/audio/HRTFPanner.h:39 > +class FFTFrame; > +class HRTFDatabase; This forward declarations aren't needed. 286672 11 69145 crogers 2010-09-28 17:47:10 -0700 Created attachment 69145 Patch 286674 12 69117 crogers 2010-09-28 17:58:55 -0700 Comment on attachment 69117 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=69117&action=review >> WebCore/platform/audio/HRTFPanner.cpp:117 >> + // IRCAM HRTF azimuths which we're loading are reversed from the panner's notion... > > Still not technically a sentence. If this is normalization for the way our data files are formatted, why is it being done here? I can suggest two ways to attack this problem and I'll leave it up to you: 1) improve the comment with a FIXME to re-bake the HRTF data files with the azimuths not reversed. We have to re-bake the files anyway for the file-size reduction, bass boost, and maybe other things. 2) remove this code from here, but do the reversal in HRTFElevation and add a similar comment as proposed in (1) there. >> WebCore/platform/audio/HRTFPanner.cpp:121 >> + azimuth += 360.0; // make positive > > Not a sentence. Why is this needed? I improved the comment. >> WebCore/platform/audio/HRTFPanner.cpp:141 >> + desiredAzimuthIndex = min(numberOfAzimuths - 1, desiredAzimuthIndex); > > We don't typically use suffixes like F for floating point values in WebKit. This segment feels like it should be in a helper function (since this function is a bit on the long side). Are the min/max needed given that we've already checked that azimuth is in the range [0.0,360.0] ? I created a new method called calculateDesiredAzimuthIndexAndBlend(). I renamed desiredAzimuthIndexF to desiredAzimuthIndexFloat I'd rather still do the min/max check since this is now moved into a separate method and is not inefficient. >> WebCore/platform/audio/HRTFPanner.cpp:174 >> + > > nit: don't need the extra newline here FIXED >> WebCore/platform/audio/HRTFPanner.cpp:198 >> + float* destinationR = outputBus->channelByType(AudioBus::ChannelRight)->data(); > > Should some of this be outside the loop? FIXED >> WebCore/platform/audio/HRTFPanner.h:32 >> +#include "DelayProcessor.h" > > I don't see this header in my checkout. Does it define DelayDSPKernel? Should you include DelayDSPKernel.h directly (once it exists)? I changed the code to include the header file directly. It is not yet landed in trunk, but you can view the interface here: https://svn.webkit.org/repository/webkit/branches/audio/WebCore/webaudio/DelayDSPKernel.h The DelayDSPKernel implementation is not yet ready for code review, but the interface used by HRTFPanner is simple. >> WebCore/platform/audio/HRTFPanner.h:39 >> +class HRTFDatabase; > > This forward declarations aren't needed. FIXED 286676 13 69146 crogers 2010-09-28 18:00:30 -0700 Created attachment 69146 Patch 291964 14 69146 jamesr 2010-10-08 16:57:24 -0700 Comment on attachment 69146 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=69146&action=review Sorry I took so long to get back to this. Code looks good, R- just for the license headers > WebCore/platform/audio/HRTFPanner.cpp:15 > + * Copyright (C) 2010 Google Inc. All rights reserved. > + * > + * Redistribution and use in source and binary forms, with or without > + * modification, are permitted provided that the following conditions > + * are met: > + * > + * 1. Redistributions of source code must retain the above copyright > + * notice, this list of conditions and the following disclaimer. > + * 2. Redistributions in binary form must reproduce the above copyright > + * notice, this list of conditions and the following disclaimer in the > + * documentation and/or other materials provided with the distribution. > + * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of > + * its contributors may be used to endorse or promote products derived > + * from this software without specific prior written permission. wrong license header > WebCore/platform/audio/HRTFPanner.h:15 > + * Copyright (C) 2010 Google Inc. All rights reserved. > + * > + * Redistribution and use in source and binary forms, with or without > + * modification, are permitted provided that the following conditions > + * are met: > + * > + * 1. Redistributions of source code must retain the above copyright > + * notice, this list of conditions and the following disclaimer. > + * 2. Redistributions in binary form must reproduce the above copyright > + * notice, this list of conditions and the following disclaimer in the > + * documentation and/or other materials provided with the distribution. > + * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of > + * its contributors may be used to endorse or promote products derived > + * from this software without specific prior written permission. wrong license header > WebCore/platform/audio/HRTFPanner.h:57 > + static const double MaxDelayTimeSeconds; nit: better to put this in .cpp and not mention it at all in the header since it's logically file static 291974 15 70321 crogers 2010-10-08 17:11:56 -0700 Created attachment 70321 Patch 291975 16 crogers 2010-10-08 17:12:46 -0700 Thanks James, I updated the LICENSE and made the constant local to the file. 291991 17 70321 jamesr 2010-10-08 17:58:58 -0700 Comment on attachment 70321 Patch R=me 292025 18 70321 commit-queue 2010-10-08 19:30:37 -0700 Comment on attachment 70321 Patch Clearing flags on attachment: 70321 Committed r69440: <http://trac.webkit.org/changeset/69440> 292026 19 commit-queue 2010-10-08 19:30:44 -0700 All reviewed patches have been landed. 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