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sbc: ARMv6 optimized version of analysis filter for SBC encoder

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The optimized filter gets enabled when the code is compiled
with -mcpu=/-march options set to target the processors which
support ARMv6 instructions. This code is also disabled when
NEON is used (which is a lot better alternative). For additional
safety ARM EABI is required and thumb mode should not be used.

Benchmarks from ARM11:

== 8 subbands ==

$ time ./sbcenc -b53 -s8 -j test.au > /dev/null

real    0m 35.65s
user    0m 34.17s
sys     0m 1.28s

$ time ./sbcenc.armv6 -b53 -s8 -j test.au > /dev/null

real    0m 17.29s
user    0m 15.47s
sys     0m 0.67s

== 4 subbands ==

$ time ./sbcenc -b53 -s4 -j test.au > /dev/null

real    0m 25.28s
user    0m 23.76s
sys     0m 1.32s

$ time ./sbcenc.armv6 -b53 -s4 -j test.au > /dev/null

real    0m 18.64s
user    0m 15.78s
sys     0m 2.22s
This commit is contained in:
Siarhei Siamashka 2011-03-14 15:35:03 -03:00 • committed by Luiz Augusto von Dentz
parent 51d5f3c9fd
commit 82ef8346d8
4 changed files with 356 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

2
src/Makefile.am
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@ -1820,7 +1820,7 @@ module_bluetooth_discover_la_LDFLAGS = $(MODULE_LDFLAGS)
module_bluetooth_discover_la_LIBADD = $(MODULE_LIBADD) $(DBUS_LIBS) libbluetooth-util.la
module_bluetooth_discover_la_CFLAGS = $(AM_CFLAGS) $(DBUS_CFLAGS)
libbluetooth_sbc_la_SOURCES = modules/bluetooth/sbc/sbc.c modules/bluetooth/sbc/sbc.h modules/bluetooth/sbc/sbc_tables.h modules/bluetooth/sbc/sbc_math.h modules/bluetooth/sbc/sbc_primitives.h modules/bluetooth/sbc/sbc_primitives.c modules/bluetooth/sbc/sbc_primitives_mmx.h modules/bluetooth/sbc/sbc_primitives_neon.h modules/bluetooth/sbc/sbc_primitives_mmx.c modules/bluetooth/sbc/sbc_primitives_neon.c
libbluetooth_sbc_la_SOURCES = modules/bluetooth/sbc/sbc.c modules/bluetooth/sbc/sbc.h modules/bluetooth/sbc/sbc_tables.h modules/bluetooth/sbc/sbc_math.h modules/bluetooth/sbc/sbc_primitives.h modules/bluetooth/sbc/sbc_primitives.c modules/bluetooth/sbc/sbc_primitives_mmx.h modules/bluetooth/sbc/sbc_primitives_neon.h modules/bluetooth/sbc/sbc_primitives_mmx.c modules/bluetooth/sbc/sbc_primitives_neon.c modules/bluetooth/sbc/sbc_primitives_armv6.c
libbluetooth_sbc_la_LDFLAGS = -avoid-version
libbluetooth_sbc_la_LIBADD = $(MODULE_LIBADD)
libbluetooth_sbc_la_CFLAGS = $(AM_CFLAGS)