aboutsummaryrefslogtreecommitdiffstats
path: root/libavcodec/dfa.c
diff options
context:
space:
mode:
authorJanne Grunau <janne-libav@jannau.net>2015-12-03 16:17:32 +0100
committerJanne Grunau <janne-libav@jannau.net>2015-12-14 16:45:02 +0100
commit90b1b9350c0a97c4065ae9054b83e57f48a0de1f (patch)
tree96a67450ae3b647de6c9da7de87f9724d8b834b3 /libavcodec/dfa.c
parenta0fc780a2093784e8664f88205ee1b215e109cee (diff)
downloadffmpeg-90b1b9350c0a97c4065ae9054b83e57f48a0de1f.tar.gz
arm: add ff_int32_to_float_fmul_array8_neon
Quite a bit faster than int32_to_float_fmul_array8_c calling ff_int32_to_float_fmul_scalar_neon through FmtConvertContext. Number of cycles per int32_to_float_fmul_array8 call while decoding padded.dts on exynos5422: before after change cortex-a7: 1270 951 -25% cortex-a15: 434 285 -34% checkasm --bench cycle counts: cortex-a15 cortex-a7 int32_to_float_fmul_array8_c: 1730.4 4384.5 int32_to_float_fmul_array8_neon_c: 571.5 1694.3 int32_to_float_fmul_array8_neon: 374.0 1448.8 Interesting are the differences between int32_to_float_fmul_array8_neon_c and int32_to_float_fmul_array8_neon. The former is current behaviour of calling ff_int32_to_float_fmul_scalar_neon repeatedly from the c function, The raw numbers differ since checkasm uses different lengths than the dca decoder.
Diffstat (limited to 'libavcodec/dfa.c')
0 files changed, 0 insertions, 0 deletions