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Fix AC/3 "too short" messages 

The AC/3 descriptor block can legitimately stop short of sending all fields.
This fixes that
master
John Cox 2014-09-03 14:50:49 +01:00
rodzic 1265079d48
commit 77f94dff7e
1 zmienionych plików z 13 dodań i 9 usunięć
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22
ts.c
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@ -2319,6 +2319,8 @@ static const char * const descriptor_names[] =
// From ATSC A/52B section A3.4
// N.B. Horizontal lines in the table represent valid stop points
static void print_ac3_audio_descriptor(const int is_msg, const byte * const buf, const int len)
{
const byte * p = buf;
@ -2361,20 +2363,20 @@ static void print_ac3_audio_descriptor(const int is_msg, const byte * const buf,
bsmod, num_channels_txt[nc], *p & 1);
if (++p >= eop)
{
goto too_short;
goto done;
}
fprint_msg_or_err(is_msg, ", langcod: %d", *p);
if (nc == 0)
{
if (++p >= eop)
{
goto too_short;
goto done;
}
fprint_msg_or_err(is_msg, ", langcod2: %d", *p);
}
if (++p >= eop)
{
goto too_short;
goto done;
}
if (bsmod < 2)
{
@ -2390,7 +2392,7 @@ static void print_ac3_audio_descriptor(const int is_msg, const byte * const buf,
}
if (++p >= eop)
{
goto too_short;
goto done;
}
{
unsigned int textlen = *p >> 1;
@ -2419,11 +2421,9 @@ static void print_ac3_audio_descriptor(const int is_msg, const byte * const buf,
p += textlen;
}
}
// From here on doesn't seem to be optional in the standard but streams don't have it
if (++p >= eop)
{
fprint_msg_or_err(is_msg, ", language: <missing>\n");
return;
goto done;
}
{
const int language_flag = *p >> 7;
@ -2454,10 +2454,14 @@ static void print_ac3_audio_descriptor(const int is_msg, const byte * const buf,
}
}
if (++p < eop)
if (++p >= eop)
{
print_data(is_msg, "additional_info: ", p, eop - p,100);
goto done;
}
print_data(is_msg, "additional_info: ", p, eop - p,100);
done:
fprint_msg_or_err(is_msg, "\n");
return;