On date Sunday 2024-03-10 19:40:47 -0500, Marth64 wrote:
> Currently, Closed Captions decoder prints multiple \pos ASS tags per line,
> per cue. This is invalid behavior, because only the first \pos tag in a cue
> is honored by ASS anyway. Don't write multiple \pos tags.
>
> Signed-off-by: Marth64 <mart...@proxyid.net>
> ---
> libavcodec/ccaption_dec.c | 8 ++++++--
> 1 file changed, 6 insertions(+), 2 deletions(-)
>
> diff --git a/libavcodec/ccaption_dec.c b/libavcodec/ccaption_dec.c
> index faf058ce97..9d4a93647c 100644
> --- a/libavcodec/ccaption_dec.c
> +++ b/libavcodec/ccaption_dec.c
> @@ -456,7 +456,7 @@ static void roll_up(CCaptionSubContext *ctx)
>
> static int capture_screen(CCaptionSubContext *ctx)
> {
> - int i, j, tab = 0;
> + int i, j, tab = 0, seen_row = 0;
> struct Screen *screen = ctx->screen + ctx->active_screen;
> enum cc_font prev_font = CCFONT_REGULAR;
> enum cc_color_code prev_color = CCCOL_WHITE;
> @@ -496,7 +496,11 @@ static int capture_screen(CCaptionSubContext *ctx)
>
> x = ASS_DEFAULT_PLAYRESX * (0.1 + 0.0250 * j);
> y = ASS_DEFAULT_PLAYRESY * (0.1 + 0.0533 * i);
> - av_bprintf(&ctx->buffer[bidx], "{\\an7}{\\pos(%d,%d)}", x, y);
> +
> + if (!seen_row) {
> + av_bprintf(&ctx->buffer[bidx], "{\\an7}{\\pos(%d,%d)}", x,
> y);
> + seen_row = 1;
> + }
>
> for (; j < SCREEN_COLUMNS; j++) {
> const char *e_tag = "", *s_tag = "", *c_tag = "", *b_tag =
> "";
LGTM, thanks.
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