[FFmpeg-devel] [PATCH 2/2] x86/alacdsp: add simd optimized functions

[James Almer]

On 10/5/2015 6:48 PM, Paul B Mahol wrote:
> On 10/4/15, James Almer <jamrial at gmail.com> wrote:
>> Signed-off-by: James Almer <jamrial at gmail.com>
>> ---
>>  libavcodec/alacdsp.c          |   3 +
>>  libavcodec/alacdsp.h          |   1 +
>>  libavcodec/x86/Makefile       |   2 +
>>  libavcodec/x86/alacdsp.asm    | 133
>> ++++++++++++++++++++++++++++++++++++++++++
>>  libavcodec/x86/alacdsp_init.c |  44 ++++++++++++++
>>  5 files changed, 183 insertions(+)
>>  create mode 100644 libavcodec/x86/alacdsp.asm
>>  create mode 100644 libavcodec/x86/alacdsp_init.c
>>
> 
> Have you measured speed gain?

About three to four times faster than c.