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ansi: support escaped codes where last argument is zero

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Peter Ross 2012-09-01 15:15:45 +10:00 committed by Michael Niedermayer
parent 368a768cbc
commit 95b9e56beb
1 changed files with 3 additions and 3 deletions
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6
libavcodec/ansi.c
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@ -368,7 +368,7 @@ static int decode_frame(AVCodecContext *avctx,
if (buf[0] == '[') {
s->state = STATE_CODE;
s->nb_args = 0;
s->args[0] = 0;
s->args[0] = -1;
} else {
s->state = STATE_NORMAL;
draw_char(avctx, 0x1B);
@ -380,7 +380,7 @@ static int decode_frame(AVCodecContext *avctx,
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
if (s->nb_args < MAX_NB_ARGS)
s->args[s->nb_args] = s->args[s->nb_args] * 10 + buf[0] - '0';
s->args[s->nb_args] = FFMAX(s->args[s->nb_args], 0) * 10 + buf[0] - '0';
break;
case ';':
s->nb_args++;
@ -396,7 +396,7 @@ static int decode_frame(AVCodecContext *avctx,
default:
if (s->nb_args > MAX_NB_ARGS)
av_log(avctx, AV_LOG_WARNING, "args overflow (%i)\n", s->nb_args);
if (s->nb_args < MAX_NB_ARGS && s->args[s->nb_args])
if (s->nb_args < MAX_NB_ARGS && s->args[s->nb_args] >= 0)
s->nb_args++;
if (execute_code(avctx, buf[0]) < 0)
return -1;