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opus: allow to select fixed-point implementation

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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>
This commit is contained in:
Sven Neumann 2014-02-05 09:14:39 +01:00 committed by Peter Korsgaard
parent 4ed1dc6616
commit 38bab3635a
2 changed files with 12 additions and 1 deletions
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11
package/opus/Config.in
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@ -13,3 +13,14 @@ config BR2_PACKAGE_OPUS
quality stereo music.
http://opus-codec.org
if BR2_PACKAGE_OPUS
config BR2_PACKAGE_OPUS_FIXED_POINT
bool "use fixed-point" if !BR2_SOFT_FLOAT
default y if BR2_SOFT_FLOAT
help
Compile without floating point operations (for machines
without a fast enough FPU).
endif

2
package/opus/opus.mk
View File

@ -12,7 +12,7 @@ OPUS_INSTALL_STAGING = YES
OPUS_CONF_OPT = --disable-doc
OPUS_AUTORECONF = YES
ifeq ($(BR2_SOFT_FLOAT),y)
ifeq ($(BR2_PACKAGE_OPUS_FIXED_POINT),y)
OPUS_CONF_OPT += --enable-fixed-point
endif