455     const int bidx = ctx->buffer_index;  in capture_screen()  local
457     av_bprint_clear(&ctx->buffer[bidx]);  in capture_screen()
490             av_bprintf(&ctx->buffer[bidx], "{\\an7}{\\pos(%d,%d)}", x, y);  in capture_screen()
581 …                av_bprintf(&ctx->buffer[bidx], "%s%s%s%s%s", e_tag, s_tag, c_tag, b_tag, override);  in capture_screen()
584                     av_bprintf(&ctx->buffer[bidx], "%s%s%s%s\\h", e_tag, s_tag, c_tag, b_tag);  in capture_screen()
586 …                  av_bprintf(&ctx->buffer[bidx], "%s%s%s%s%c", e_tag, s_tag, c_tag, b_tag, row[j]);  in capture_screen()
591             av_bprintf(&ctx->buffer[bidx], "\\N");  in capture_screen()
594     if (!av_bprint_is_complete(&ctx->buffer[bidx]))  in capture_screen()
596     if (screen->row_used && ctx->buffer[bidx].len >= 2) {  in capture_screen()
597         ctx->buffer[bidx].len -= 2;  in capture_screen()
598         ctx->buffer[bidx].str[ctx->buffer[bidx].len] = 0;  in capture_screen()
848     int bidx = ctx->buffer_index;  in decode()  local
876             ctx->buffer_index = bidx = !ctx->buffer_index;  in decode()
880         if (ctx->buffer[bidx].str[0] || ctx->real_time) {  in decode()
881             ff_dlog(ctx, "cdp writing data (%s)\n", ctx->buffer[bidx].str);  in decode()
890 …ret = ff_ass_add_rect2(sub, ctx->buffer[bidx].str, ctx->readorder++, 0, NULL, NULL, &nb_rect_alloc…  in decode()
899         bidx = !ctx->buffer_index;  in decode()
900 …ret = ff_ass_add_rect2(sub, ctx->buffer[bidx].str, ctx->readorder++, 0, NULL, NULL, &nb_rect_alloc…  in decode()
907             sub->end_display_time = ctx->buffer[bidx].len * 20;  in decode()
918 …ret = ff_ass_add_rect2(sub, ctx->buffer[bidx].str, ctx->readorder++, 0, NULL, NULL, &nb_rect_alloc…  in decode()