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gst/matroska/matroska-demux.c: Convert subtitle palette info in VobSub private data from VobSub's (buggy) RGB to YUV.

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Original commit message from CVS:
* gst/matroska/matroska-demux.c:
(gst_matroska_demux_push_dvd_clut_change_event):
Convert subtitle palette info in VobSub private data from VobSub's
(buggy) RGB to YUV.
This commit is contained in:
Mark Nauwelaerts 2008-05-12 16:35:39 +00:00
parent 9ebb11bebf
commit 10f7a99f1a
2 changed files with 20 additions and 2 deletions
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7
ChangeLog
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@ -1,3 +1,10 @@
2008-05-12 Mark Nauwelaerts <mnauw@users.sf.net>
* gst/matroska/matroska-demux.c:
(gst_matroska_demux_push_dvd_clut_change_event):
Convert subtitle palette info in VobSub private data from VobSub's
(buggy) RGB to YUV.
2008-05-12 Mark Nauwelaerts <mnauw@users.sf.net>
* gst/avi/gstavimux.c: (gst_avi_mux_pad_reset):

15
gst/matroska/matroska-demux.c
View file

@ -2400,17 +2400,28 @@ gst_matroska_demux_push_dvd_clut_change_event (GstMatroskaDemux * demux,
start = strstr (stream->codec_priv, "palette:");
if (start) {
gint i;
guint clut[16];
guint32 clut[16];
guint32 col;
guint8 r, g, b, y, u, v;
start += 8;
while (g_ascii_isspace (*start))
start++;
for (i = 0; i < 16; i++) {
if (sscanf (start, "%06x", &clut[i]) != 1)
if (sscanf (start, "%06x", &col) != 1)
break;
start += 6;
while ((*start == ',') || g_ascii_isspace (*start))
start++;
/* sigh, need to convert this from vobsub pseudo-RGB to YUV */
r = (col >> 16) & 0xff;
g = (col >> 8) & 0xff;
b = col & 0xff;
y = CLAMP ((0.1494 * r + 0.6061 * g + 0.2445 * b) * 219 / 255 + 16, 0,
255);
u = CLAMP (0.6066 * r - 0.4322 * g - 0.1744 * b + 128, 0, 255);
v = CLAMP (-0.08435 * r - 0.3422 * g + 0.4266 * b + 128, 0, 255);
clut[i] = (y << 16) | (u << 8) | v;
}
/* got them all without problems; build and send event */