Commit 830c5868 authored by Benoît Thébaudeau's avatar Benoît Thébaudeau Committed by Thomas Petazzoni
Browse files

libmad: Add optimization config options 



Configuring libmad with --enable-speed compromises accuracy and can cause audio
clipping in some cases (heard on ARM platform with some loud MP3s), so give
users the choice of MAD optimizations.

The default config corresponds to the default behavior of libmad's configure.

Signed-off-by: default avatarBenoît Thébaudeau <benoit.thebaudeau@advansee.com>
parent e388ac59

package/libmad/Config.in

+41 −0
Original line number Diff line number Diff line
@@ -6,3 +6,44 @@ config BR2_PACKAGE_LIBMAD 
	  without a floating-point unit.



	  http://www.underbit.com/products/mad/



if BR2_PACKAGE_LIBMAD



choice

	prompt "Speed vs. accuracy"

	default BR2_PACKAGE_LIBMAD_OPTIMIZATION_DEFAULT



config BR2_PACKAGE_LIBMAD_OPTIMIZATION_DEFAULT

	bool "Default"

	help

	  Keep optimizations balanced between speed and accuracy.



config BR2_PACKAGE_LIBMAD_OPTIMIZATION_SPEED

	bool "Optimize for speed over accuracy"

	help

	  Compromise accuracy for speed.



config BR2_PACKAGE_LIBMAD_OPTIMIZATION_ACCURACY

	bool "Optimize for accuracy over speed"

	help

	  Compromise speed for accuracy.



endchoice



config BR2_PACKAGE_LIBMAD_SSO

	bool "Subband synthesis optimization"

	help

	  Use the subband synthesis optimization, with reduced accuracy.



config BR2_PACKAGE_LIBMAD_ASO

	bool "Architecture-specific optimizations"

	default y

	help

	  Use certain architecture-specific optimizations.



config BR2_PACKAGE_LIBMAD_STRICT_ISO

	bool "Strict ISO/IEC interpretations"

	help

	  Use strict ISO/IEC interpretations.



endif

package/libmad/libmad.mk

+5 −1
Original line number Diff line number Diff line
@@ -30,6 +30,10 @@ LIBMAD_POST_INSTALL_TARGET_HOOKS += LIBMAD_INSTALL_TARGET_PC 


LIBMAD_CONF_OPT = \

		--disable-debugging \

		--enable-speed

		$(if $(BR2_PACKAGE_LIBMAD_OPTIMIZATION_SPEED),--enable-speed) \

		$(if $(BR2_PACKAGE_LIBMAD_OPTIMIZATION_ACCURACY),--enable-accuracy) \

		--$(if $(BR2_PACKAGE_LIBMAD_SSO),enable,disable)-sso \

		--$(if $(BR2_PACKAGE_LIBMAD_ASO),enable,disable)-aso \

		--$(if $(BR2_PACKAGE_LIBMAD_STRICT_ISO),enable,disable)-strict-iso



$(eval $(call AUTOTARGETS))