Bug 126437 – webkit-2.3.3 USE_ACCELERATE_FFT && WEBAUDIO_GSTREAMER build fails

• Component: Web Audio
• Status: RESOLVED FIXED

[Jeremy Huddleston Sequoia]

If USE_ACCELERATE_FFT is set, <gst/fft/gstfftf32.h> is not included, so WEBAUDIO_GSTREAMER builds fail with:

:info:build Source/WebCore/platform/audio/gstreamer/FFTFrameGStreamer.cpp:46:38: error: use of undeclared identifier 'GstFFTF32Complex'
:info:build     , m_complexData(std::make_unique<GstFFTF32Complex[]>(unpackedFFTDataSize(m_FFTSize)))
:info:build                                      ^
:info:build Source/WebCore/platform/audio/gstreamer/FFTFrameGStreamer.cpp:46:55: error: expected expression
:info:build     , m_complexData(std::make_unique<GstFFTF32Complex[]>(unpackedFFTDataSize(m_FFTSize)))
:info:build                                                       ^
:info:build mv -f Source/WebCore/platform/audio/.deps/libPlatform_la-AudioBus.Tpo Source/WebCore/platform/audio/.deps/libPlatform_la-AudioBus.Plo

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Some additional info:

webkitgtk-2.3.3 $ grep -R GstFFTF32Complex *
Source/WebCore/platform/audio/FFTFrame.h:    std::unique_ptr<GstFFTF32Complex[]> m_complexData;
Source/WebCore/platform/audio/gstreamer/FFTFrameGStreamer.cpp:    , m_complexData(std::make_unique<GstFFTF32Complex[]>(unpackedFFTDataSize(m_FFTSize)))
Source/WebCore/platform/audio/gstreamer/FFTFrameGStreamer.cpp:    , m_complexData(std::make_unique<GstFFTF32Complex[]>(unpackedFFTDataSize(m_FFTSize)))

$ grep -R GstFFTF32Complex /opt/local/include/gstreamer-1.0/
/opt/local/include/gstreamer-1.0/gst/fft/gstfftf32.h:typedef struct _GstFFTF32Complex GstFFTF32Complex;
/opt/local/include/gstreamer-1.0/gst/fft/gstfftf32.h: * GstFFTF32Complex:
/opt/local/include/gstreamer-1.0/gst/fft/gstfftf32.h:struct _GstFFTF32Complex
/opt/local/include/gstreamer-1.0/gst/fft/gstfftf32.h:                                         GstFFTF32Complex *freqdata);
/opt/local/include/gstreamer-1.0/gst/fft/gstfftf32.h:void          gst_fft_f32_inverse_fft   (GstFFTF32 *self, const GstFFTF32Complex *freqdata,


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I tried to address the issue with the attached patch, but the build still fails (I'll followup with another ticket).

[Jeremy Huddleston Sequoia]

Created attachment 220317 [details]
gstreamer.patch

[Philippe Normand]

I think USE_ACCELERATE_FFT should be unset when webkitgtk is built on OSX. Can you please try that approach?

[Jeremy Huddleston Sequoia]

(In reply to comment #2)
> I think USE_ACCELERATE_FFT should be unset when webkitgtk is built on OSX. Can you please try that approach?

That's a reasonable request, but I won't be able to until #126438 is resolved.

[Philippe Normand]

(In reply to comment #3)
> (In reply to comment #2)
> > I think USE_ACCELERATE_FFT should be unset when webkitgtk is built on OSX. Can you please try that approach?
> 
> That's a reasonable request, but I won't be able to until #126438 is resolved.

Hum I'm not so sure about that but I didn't really have a close look at the other bug.

[Philippe Normand]

(In reply to comment #2)
> I think USE_ACCELERATE_FFT should be unset when webkitgtk is built on OSX. Can you please try that approach?

Actually now I think it'd make more sense to use the FFTFrameMac implementation on OSX instead of the GStreamer backend. The main reason is that the Mac version would likely perform better (but I don't have benchmarks to prove it :))

[Philippe Normand]

*** Bug 126438 has been marked as a duplicate of this bug. ***

[Michael Catanzaro]

I believe this issue is obsolete based on comments in bug #126492. If this issue is still present in 2.8.1 or 2.9.1 please leave a note so we can reopen.