diff options
Diffstat (limited to 'libavfilter/vf_tinterlace.c')
| -rw-r--r-- | libavfilter/vf_tinterlace.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/libavfilter/vf_tinterlace.c b/libavfilter/vf_tinterlace.c index 80146a9480..09ca4d30ee 100644 --- a/libavfilter/vf_tinterlace.c +++ b/libavfilter/vf_tinterlace.c @@ -89,8 +89,10 @@ static int query_formats(AVFilterContext *ctx) } static void lowpass_line_c(uint8_t *dstp, ptrdiff_t width, 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 < width; i++) { // this calculation is an integer representation of @@ -228,12 +230,12 @@ void copy_picture_field(TInterlaceContext *tinterlace, int srcp_linesize = src_linesize[plane] * k; int dstp_linesize = dst_linesize[plane] * (interleave ? 2 : 1); for (h = lines; h > 0; h--) { - const uint8_t *srcp_above = srcp - src_linesize[plane]; - const uint8_t *srcp_below = srcp + src_linesize[plane]; - if (h == lines) srcp_above = srcp; // there is no line above - if (h == 1) srcp_below = srcp; // there is no line below + ptrdiff_t pref = src_linesize[plane]; + ptrdiff_t mref = -pref; + if (h == lines) mref = 0; // there is no line above + else if (h == 1) pref = 0; // there is no line below - tinterlace->lowpass_line(dstp, cols, srcp, srcp_above, srcp_below); + tinterlace->lowpass_line(dstp, cols, srcp, mref, pref); dstp += dstp_linesize; srcp += srcp_linesize; } |