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mpv
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Fix subtitle display for DVDs using fade-in/fade-out. 

This does not do the actual fading, this is not supported by MPlayer,
but will just use the highest alpha value used during display.


git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@30524 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
reimar 2010-02-06 19:57:45 +00:00
parent e008f62627
commit aedd1b4de8
1 changed files with 17 additions and 5 deletions
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22
spudec.c
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@ -354,7 +354,7 @@ static void compute_palette(spudec_handle_t *this, packet_t *packet)
static void spudec_process_control(spudec_handle_t *this, int pts100)
{
int a,b; /* Temporary vars */
int a,b,c,d; /* Temporary vars */
unsigned int date, type;
unsigned int off;
unsigned int start_off = 0;
@ -417,10 +417,22 @@ static void spudec_process_control(spudec_handle_t *this, int pts100)
break;
case 0x04:
/* Alpha */
this->alpha[0] = this->packet[off] >> 4;
this->alpha[1] = this->packet[off] & 0xf;
this->alpha[2] = this->packet[off + 1] >> 4;
this->alpha[3] = this->packet[off + 1] & 0xf;
a = this->packet[off] >> 4;
b = this->packet[off] & 0xf;
c = this->packet[off + 1] >> 4;
d = this->packet[off + 1] & 0xf;
// Note: some DVDs change these values to create a fade-in/fade-out effect
// We can not handle this, so just keep the highest value during the display time.
if (display) {
a = FFMAX(a, this->alpha[0]);
b = FFMAX(b, this->alpha[1]);
c = FFMAX(c, this->alpha[2]);
d = FFMAX(d, this->alpha[3]);
}
this->alpha[0] = a;
this->alpha[1] = b;
this->alpha[2] = c;
this->alpha[3] = d;
mp_msg(MSGT_SPUDEC,MSGL_DBG2,"Alpha %d, %d, %d, %d\n",
this->alpha[0], this->alpha[1], this->alpha[2], this->alpha[3]);
off+=2;