opus: allow to select fixed-point implementation
The default of choosing the fixed-point implementation if the target hardware does not have floating-point unit is not always the best choice. Modern ARM hardware has floating point support but most likely the fixed-point implementation in Opus will still perform better. In particular if your CPU supports the NEON extension. This commit allows to select the fixed-point implementation manually and sets the default based on the availability of a floating-point unit. [Peter: force option for sw float, slightly reword] Signed-off-by: Sven Neumann <neumann@teufel.de> Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
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@ -13,3 +13,14 @@ config BR2_PACKAGE_OPUS
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quality stereo music.
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http://opus-codec.org
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if BR2_PACKAGE_OPUS
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config BR2_PACKAGE_OPUS_FIXED_POINT
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bool "use fixed-point" if !BR2_SOFT_FLOAT
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default y if BR2_SOFT_FLOAT
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help
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Compile without floating point operations (for machines
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without a fast enough FPU).
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endif
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@ -12,7 +12,7 @@ OPUS_INSTALL_STAGING = YES
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OPUS_CONF_OPT = --disable-doc
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OPUS_AUTORECONF = YES
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ifeq ($(BR2_SOFT_FLOAT),y)
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ifeq ($(BR2_PACKAGE_OPUS_FIXED_POINT),y)
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OPUS_CONF_OPT += --enable-fixed-point
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endif
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