ffmpeg | branch: master | Timothy Gu <timothyg...@gmail.com> | Sun Feb 14 02:15:18 2016 +0000| [a678d667816a86b7e5f8c4b558f8ed333bb98841] | committer: Timothy Gu
vf_blend: Use integers for divide mode 2.5x faster for 8-bit mode without autovectorization in GCC, 2x slower with it on x86. However, since the platforms we enable GCC autovectorization on most probably has support for SSE2 optimization (added in the subsequent commit), this commit should in general do good. > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=a678d667816a86b7e5f8c4b558f8ed333bb98841 --- libavfilter/vf_blend.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/libavfilter/vf_blend.c b/libavfilter/vf_blend.c index 4b4d435..61aa17e 100644 --- a/libavfilter/vf_blend.c +++ b/libavfilter/vf_blend.c @@ -247,7 +247,7 @@ DEFINE_BLEND8(hardlight, (B < 128) ? MULTIPLY(2, B, A) : SCREEN(2, B, A)) DEFINE_BLEND8(hardmix, (A < (255 - B)) ? 0: 255) DEFINE_BLEND8(darken, FFMIN(A, B)) DEFINE_BLEND8(lighten, FFMAX(A, B)) -DEFINE_BLEND8(divide, av_clip_uint8(((float)A / ((float)B) * 255))) +DEFINE_BLEND8(divide, av_clip_uint8(B == 0 ? 255 : 255 * A / B)) DEFINE_BLEND8(dodge, DODGE(A, B)) DEFINE_BLEND8(burn, BURN(A, B)) DEFINE_BLEND8(softlight, (A > 127) ? B + (255 - B) * (A - 127.5) / 127.5 * (0.5 - fabs(B - 127.5) / 255): B - B * ((127.5 - A) / 127.5) * (0.5 - fabs(B - 127.5)/255)) @@ -287,7 +287,7 @@ DEFINE_BLEND16(hardlight, (B < 32768) ? MULTIPLY(2, B, A) : SCREEN(2, B, A)) DEFINE_BLEND16(hardmix, (A < (65535 - B)) ? 0: 65535) DEFINE_BLEND16(darken, FFMIN(A, B)) DEFINE_BLEND16(lighten, FFMAX(A, B)) -DEFINE_BLEND16(divide, av_clip_uint16(((float)A / ((float)B) * 65535))) +DEFINE_BLEND16(divide, av_clip_uint16(B == 0 ? 65535 : 65535 * A / B)) DEFINE_BLEND16(dodge, DODGE(A, B)) DEFINE_BLEND16(burn, BURN(A, B)) DEFINE_BLEND16(softlight, (A > 32767) ? B + (65535 - B) * (A - 32767.5) / 32767.5 * (0.5 - fabs(B - 32767.5) / 65535): B - B * ((32767.5 - A) / 32767.5) * (0.5 - fabs(B - 32767.5)/65535)) _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog
