[FFmpeg-devel] Build ffmpeg with clang lto

Hi Anyone has experience compiling ffmpeg with clang LTO before ? I tried ./configure --cc=clang --cxx=clang++ --enable-lto and it did not work. Thanks -Adrian ___ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffm

Re: [FFmpeg-devel] Build ffmpeg with clang lto

vocation) Makefile:111: recipe for target 'ffprobe_g' failed On Sat, 1 Jun 2019 at 09:55, Carl Eugen Hoyos wrote: > Am Sa., 1. Juni 2019 um 17:45 Uhr schrieb Adrian Tong > : > > > Anyone has experience compiling ffmpeg with clang LTO before ? I tried > > ./configur

[FFmpeg-devel] yuv420_bgr24_mmxext conversion taking significant time

Hi I have a workload which spends a significant amount of time (~10%) in the yuv420_bgr24_mmxext function in FFMEPG. I looked at the assembly and profile and see MMX (64 bit) registers are used. I wonder whether we can have a SSE2 version which has a register bit width of 128. I am very interest

Re: [FFmpeg-devel] yuv420_bgr24_mmxext conversion taking significant time

On Fri, 7 Jun 2019 at 23:20, Lauri Kasanen wrote: > On Fri, 7 Jun 2019 08:38:35 -0700 > Adrian Tong wrote: > > > Hi > > > > I have a workload which spends a significant amount of time (~10%) in > > the yuv420_bgr24_mmxext function in FFMEPG. > > > >

Re: [FFmpeg-devel] yuv420_bgr24_mmxext conversion taking significant time

On Sat, 8 Jun 2019 at 09:38, Lauri Kasanen wrote: > On Sat, 8 Jun 2019 06:51:51 -0700 > Adrian Tong wrote: > > > Hi Lauri. > > > > Thanks for the reply, any reason why this has not been implemented > before ? > > it seems to me that this would be a pretty

Re: [FFmpeg-devel] yuv420_bgr24_mmxext conversion taking significant time

On Sat, 8 Jun 2019 at 09:42, Adrian Tong wrote: > > > On Sat, 8 Jun 2019 at 09:38, Lauri Kasanen wrote: > >> On Sat, 8 Jun 2019 06:51:51 -0700 >> Adrian Tong wrote: >> >> > Hi Lauri. >> > >> > Thanks for the reply, any reason why this

Re: [FFmpeg-devel] yuv420_bgr24_mmxext conversion taking significant time

On Mon, 10 Jun 2019 at 23:02, Lauri Kasanen wrote: > On Mon, 10 Jun 2019 17:42:00 -0700 > Adrian Tong wrote: > > > I have been trying to implement yuv420_to_bgr24 using SSE2 instruction. I > > ran into the case where the output of C implemented yuv420_to_bgr24 has &

Re: [FFmpeg-devel] [PATCH] Avoid integer to float point domain crossing penalties

Anyone interested in reviewing this patch ? Thanks -Adrian On Mon, 24 Jun 2019 at 13:57, wrote: > From: Adrian Tong > > On internal benchmark, I see a noisy-level difference (more likely to be > an improvement) in ff_h264_decode_mb_cabac which calls this function. > --- &