diff options
Diffstat (limited to 'libavfilter/vf_interlace.c')
| -rw-r--r-- | libavfilter/vf_interlace.c | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/libavfilter/vf_interlace.c b/libavfilter/vf_interlace.c index efa3128727..8da8326709 100644 --- a/libavfilter/vf_interlace.c +++ b/libavfilter/vf_interlace.c @@ -55,9 +55,10 @@ AVFILTER_DEFINE_CLASS(interlace); static void lowpass_line_c(uint8_t *dstp, ptrdiff_t linesize, const uint8_t *srcp, - const uint8_t *srcp_above, - const uint8_t *srcp_below) + ptrdiff_t mref, ptrdiff_t pref) { + const uint8_t *srcp_above = srcp + mref; + const uint8_t *srcp_below = srcp + pref; int i; for (i = 0; i < linesize; i++) { // this calculation is an integer representation of @@ -154,13 +155,13 @@ static void copy_picture_field(InterlaceContext *s, int srcp_linesize = src_frame->linesize[plane] * 2; int dstp_linesize = dst_frame->linesize[plane] * 2; for (j = lines; j > 0; j--) { - const uint8_t *srcp_above = srcp - src_frame->linesize[plane]; - const uint8_t *srcp_below = srcp + src_frame->linesize[plane]; + ptrdiff_t pref = src_frame->linesize[plane]; + ptrdiff_t mref = -pref; if (j == lines) - srcp_above = srcp; // there is no line above - if (j == 1) - srcp_below = srcp; // there is no line below - s->lowpass_line(dstp, cols, srcp, srcp_above, srcp_below); + mref = 0; // there is no line above + else if (j == 1) + pref = 0; // there is no line below + s->lowpass_line(dstp, cols, srcp, mref, pref); dstp += dstp_linesize; srcp += srcp_linesize; } |