ffmpeg | branch: master | Paul B Mahol <[email protected]> | Wed Jul 29 10:01:35 2020 +0200| [fabbb680d42aa81d1a7b3138b1f66d8ddd7ce81d] | committer: Paul B Mahol
avcodec/cfhd: move if/else out of loop in inverse transform > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=fabbb680d42aa81d1a7b3138b1f66d8ddd7ce81d --- libavcodec/cfhd.c | 62 +++++++++++++++++++++++++++---------------------------- 1 file changed, 30 insertions(+), 32 deletions(-) diff --git a/libavcodec/cfhd.c b/libavcodec/cfhd.c index 299d98780c..91f4cc7e46 100644 --- a/libavcodec/cfhd.c +++ b/libavcodec/cfhd.c @@ -211,39 +211,37 @@ static inline void filter(int16_t *output, ptrdiff_t out_stride, int16_t tmp; int i; - for (i = 0; i < len; i++) { - if (i == 0) { - tmp = (11*low[0*low_stride] - 4*low[1*low_stride] + low[2*low_stride] + 4) >> 3; - output[(2*i+0)*out_stride] = (tmp + high[0*high_stride]) >> 1; - if (clip) - output[(2*i+0)*out_stride] = av_clip_uintp2_c(output[(2*i+0)*out_stride], clip); - - tmp = ( 5*low[0*low_stride] + 4*low[1*low_stride] - low[2*low_stride] + 4) >> 3; - output[(2*i+1)*out_stride] = (tmp - high[0*high_stride]) >> 1; - if (clip) - output[(2*i+1)*out_stride] = av_clip_uintp2_c(output[(2*i+1)*out_stride], clip); - } else if (i == len-1) { - tmp = ( 5*low[i*low_stride] + 4*low[(i-1)*low_stride] - low[(i-2)*low_stride] + 4) >> 3; - output[(2*i+0)*out_stride] = (tmp + high[i*high_stride]) >> 1; - if (clip) - output[(2*i+0)*out_stride] = av_clip_uintp2_c(output[(2*i+0)*out_stride], clip); - - tmp = (11*low[i*low_stride] - 4*low[(i-1)*low_stride] + low[(i-2)*low_stride] + 4) >> 3; - output[(2*i+1)*out_stride] = (tmp - high[i*high_stride]) >> 1; - if (clip) - output[(2*i+1)*out_stride] = av_clip_uintp2_c(output[(2*i+1)*out_stride], clip); - } else { - tmp = (low[(i-1)*low_stride] - low[(i+1)*low_stride] + 4) >> 3; - output[(2*i+0)*out_stride] = (tmp + low[i*low_stride] + high[i*high_stride]) >> 1; - if (clip) - output[(2*i+0)*out_stride] = av_clip_uintp2_c(output[(2*i+0)*out_stride], clip); - - tmp = (low[(i+1)*low_stride] - low[(i-1)*low_stride] + 4) >> 3; - output[(2*i+1)*out_stride] = (tmp + low[i*low_stride] - high[i*high_stride]) >> 1; - if (clip) - output[(2*i+1)*out_stride] = av_clip_uintp2_c(output[(2*i+1)*out_stride], clip); - } + tmp = (11*low[0*low_stride] - 4*low[1*low_stride] + low[2*low_stride] + 4) >> 3; + output[(2*0+0)*out_stride] = (tmp + high[0*high_stride]) >> 1; + if (clip) + output[(2*0+0)*out_stride] = av_clip_uintp2_c(output[(2*0+0)*out_stride], clip); + + tmp = ( 5*low[0*low_stride] + 4*low[1*low_stride] - low[2*low_stride] + 4) >> 3; + output[(2*0+1)*out_stride] = (tmp - high[0*high_stride]) >> 1; + if (clip) + output[(2*0+1)*out_stride] = av_clip_uintp2_c(output[(2*0+1)*out_stride], clip); + + for (i = 1; i < len - 1; i++) { + tmp = (low[(i-1)*low_stride] - low[(i+1)*low_stride] + 4) >> 3; + output[(2*i+0)*out_stride] = (tmp + low[i*low_stride] + high[i*high_stride]) >> 1; + if (clip) + output[(2*i+0)*out_stride] = av_clip_uintp2_c(output[(2*i+0)*out_stride], clip); + + tmp = (low[(i+1)*low_stride] - low[(i-1)*low_stride] + 4) >> 3; + output[(2*i+1)*out_stride] = (tmp + low[i*low_stride] - high[i*high_stride]) >> 1; + if (clip) + output[(2*i+1)*out_stride] = av_clip_uintp2_c(output[(2*i+1)*out_stride], clip); } + + tmp = ( 5*low[i*low_stride] + 4*low[(i-1)*low_stride] - low[(i-2)*low_stride] + 4) >> 3; + output[(2*i+0)*out_stride] = (tmp + high[i*high_stride]) >> 1; + if (clip) + output[(2*i+0)*out_stride] = av_clip_uintp2_c(output[(2*i+0)*out_stride], clip); + + tmp = (11*low[i*low_stride] - 4*low[(i-1)*low_stride] + low[(i-2)*low_stride] + 4) >> 3; + output[(2*i+1)*out_stride] = (tmp - high[i*high_stride]) >> 1; + if (clip) + output[(2*i+1)*out_stride] = av_clip_uintp2_c(output[(2*i+1)*out_stride], clip); } static inline void interlaced_vertical_filter(int16_t *output, int16_t *low, int16_t *high, _______________________________________________ ffmpeg-cvslog mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
