subtitles looked bad here (inverted colors sometimes)

looked like values wrapped around the byte
(not sure of the side effects but subtitles look good now)


git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@3039 b3059339-0415-0410-9bf9-f77b7e298cf2

1 files changed, 5 insertions, 1 deletions

diff --git a/spudec.c b/spudec.c
index f455e9ea01..d55ce28fa9 100644
--- a/spudec.c
+++ b/spudec.c
@@ -153,7 +153,11 @@ static void spudec_process_data(spudec_handle_t *this)
       len = this->width - x;
     /* FIXME have to use palette and alpha map*/
     memset(this->image + y * this->width + x, cmap[color], len);
-    memset(this->aimage + y * this->width + x, alpha[color], len);
+    if (alpha[color] < cmap[color]) {
+      memset(this->aimage + y * this->width + x, 1, len);
+    } else {
+      memset(this->aimage + y * this->width + x, alpha[color] - cmap[color], len);
+    }
     x += len;
     if (x >= this->width) {
       next_line(this);