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avcodec/ccaption_dec: implement tab offset commands 

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Aman Gupta 2016-06-14 11:57:42 -07:00 committed by Michael Niedermayer
parent 0a72b69889
commit 4448f16ef5
1 changed files with 5 additions and 0 deletions
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5
libavcodec/ccaption_dec.c
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@ -713,6 +713,11 @@ static void process_cc608(CCaptionSubContext *ctx, int64_t pts, uint8_t hi, uint
/* Standard characters (always in pairs) */
handle_char(ctx, hi, lo, pts);
ctx->prev_cmd[0] = ctx->prev_cmd[1] = 0;
} else if (hi == 0x17 && lo >= 0x21 && lo <= 0x23) {
/* Tab offsets (spacing) */
for (int i = 0; i < lo - 0x20; i++) {
handle_char(ctx, ' ', 0, pts);
}
} else {
/* Ignoring all other non data code */
ff_dlog(ctx, "Unknown command 0x%hhx 0x%hhx\n", hi, lo);