diff options
Diffstat (limited to 'gst/smpte/gstsmpte.c')
| -rw-r--r-- | gst/smpte/gstsmpte.c | 24 |
1 files changed, 13 insertions, 11 deletions
diff --git a/gst/smpte/gstsmpte.c b/gst/smpte/gstsmpte.c index 47de304f..a123010f 100644 --- a/gst/smpte/gstsmpte.c +++ b/gst/smpte/gstsmpte.c @@ -275,7 +275,7 @@ gst_smpte_blend_i420 (guint8 *in1, guint8 *in2, guint8 *out, GstMask *mask, { guint32 *maskp; gint value; - gint i; + gint i, j; gint min, max; guint8 *in1u, *in1v, *in2u, *in2v, *outu, *outv; gint lumsize = width * height; @@ -286,20 +286,22 @@ gst_smpte_blend_i420 (guint8 *in1, guint8 *in2, guint8 *out, GstMask *mask, min = pos - border; max = pos; - in1u = in1 + lumsize; in1v = in1 + chromsize; - in2u = in2 + lumsize; in2v = in2 + chromsize; - outu = out + lumsize; outv = out + chromsize; + in1u = in1 + lumsize; in1v = in1u + chromsize; + in2u = in2 + lumsize; in2v = in2u + chromsize; + outu = out + lumsize; outv = outu + chromsize; maskp = mask->data; - for (i = lumsize; i; i--) { - value = *maskp++; - value = ((CLAMP (value, min, max) - min) << 8) / border; + for (i = 0; i < height; i++) { + for (j = 0; j < width; j++) { + value = *maskp++; + value = ((CLAMP (value, min, max) - min) << 8) / border; - *out++ = ((*in1++ * value) + (*in2++ * (255 - value))) >> 8; - if (i % 4) { - *outu++ = ((*in1u++ * value) + (*in2u++ * (255 - value))) >> 8; - *outv++ = ((*in1v++ * value) + (*in2v++ * (255 - value))) >> 8; + *out++ = ((*in1++ * value) + (*in2++ * (256 - value))) >> 8; + if (!(i & 1) && !(j & 1)) { + *outu++ = ((*in1u++ * value) + (*in2u++ * (256 - value))) >> 8; + *outv++ = ((*in1v++ * value) + (*in2v++ * (256 - value))) >> 8; + } } } } |