From patchwork Mon Jan 27 20:54:59 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul B Mahol X-Patchwork-Id: 17591 Return-Path: X-Original-To: patchwork@ffaux-bg.ffmpeg.org Delivered-To: patchwork@ffaux-bg.ffmpeg.org Received: from ffbox0-bg.mplayerhq.hu (ffbox0-bg.ffmpeg.org [79.124.17.100]) by ffaux.localdomain (Postfix) with ESMTP id 8F41144A1BE for ; Mon, 27 Jan 2020 23:01:39 +0200 (EET) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 73BAE689C72; Mon, 27 Jan 2020 23:01:39 +0200 (EET) X-Original-To: ffmpeg-devel@ffmpeg.org Delivered-To: ffmpeg-devel@ffmpeg.org Received: from mail-wm1-f67.google.com (mail-wm1-f67.google.com [209.85.128.67]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id 35C4A689A4E for ; Mon, 27 Jan 2020 23:01:33 +0200 (EET) Received: by mail-wm1-f67.google.com with SMTP id b2so81952wma.0 for ; Mon, 27 Jan 2020 13:01:33 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:subject:date:message-id; bh=4IeF8Cg+a09wmisDZSqLlbZTmZAvlQaRTllPpuDSgD4=; b=KHaCv26wONyKM9cYNM2N44zbSk77J3Elnzag+75Xjtgfg0x72erRKIVr3tb2fSzdIM NXFiR7WB+z5yiJaaxe+sXkdXl/LZR6HFFPtM5BuJMVSgXVQzbgeEwxYDQEhScpj1aI5J NLVVa3uaRaoW96oqS4ujPEFHiPdMeoKEwZMZrNLCzC66IME5n1nU/oVA+rDZv6Pcr8aW 4GwBgC6dqhgMhRctv8DAMoEJ4uC8bLUZCD9OPApBviai5ejdiHnLizfXrrUnaue66nAK v4icrO2j43FEOZ+dtA0RLmFGXqCCMIwjOXaA7+fwFw1PieaZ75GP26ugNsmk/PP+/htM xh9Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:date:message-id; bh=4IeF8Cg+a09wmisDZSqLlbZTmZAvlQaRTllPpuDSgD4=; b=ldA+PdhKgG/OYjnroEHzoFoyboX/2KXrroq8pTzGfV3yaYGOtHTSIzvA5TZx5fgYlL ycodQbKaK03ZddHV05a8rPONM9M+39gSuVCMVsOjixI69mjGY+K8bSWWk4D4LlSRFimK WEr4VJ/SfXmCEWMJyX5J9IYMMd+BpUiDI5KzeS/H+neSTuj/ejjyvJnNDraUQpZu/YRT /IVyARJNcDVGSeeLMOkBjJSNISlb5HQRp6J8RvJNFj/t9cFtQUeAZQan/ptp8ojNPK6I 058nts0HN26GgTHnDU/mYB3MIyaYVxhQWI57Z0wuFpOJXDDzZ7MVxzkR8reA6rrvZdOQ zi5g== X-Gm-Message-State: APjAAAWxHFUPkMs0CSfzOgTKrlGDDdGy+185EJEus6FEtRnKa/ze8jN9 MFv2/IL06LzGBWM2cSRsQHHEjX5jND0= X-Google-Smtp-Source: APXvYqzXs4XVhwL3PWx71QOccCvJgCWR6aLSMU+APi0ZnjY0cOQa0ZU2uS4gB5QcewsfGuXdMEfmVw== X-Received: by 2002:a7b:c318:: with SMTP id k24mr587096wmj.54.1580158508988; Mon, 27 Jan 2020 12:55:08 -0800 (PST) Received: from localhost.localdomain ([77.237.98.59]) by smtp.gmail.com with ESMTPSA id o4sm22185038wrw.97.2020.01.27.12.55.06 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 27 Jan 2020 12:55:08 -0800 (PST) From: Paul B Mahol To: ffmpeg-devel@ffmpeg.org Date: Mon, 27 Jan 2020 21:54:59 +0100 Message-Id: <20200127205459.22590-1-onemda@gmail.com> X-Mailer: git-send-email 2.17.1 Subject: [FFmpeg-devel] [PATCH] avformat/tty: add probe function X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: FFmpeg development discussions and patches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: FFmpeg development discussions and patches MIME-Version: 1.0 Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" Signed-off-by: Paul B Mahol --- libavformat/tty.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/libavformat/tty.c b/libavformat/tty.c index 8d48f2c45c..acc6da27cc 100644 --- a/libavformat/tty.c +++ b/libavformat/tty.c @@ -24,6 +24,8 @@ * Tele-typewriter demuxer */ +#include + #include "libavutil/intreadwrite.h" #include "libavutil/avstring.h" #include "libavutil/log.h" @@ -42,6 +44,16 @@ typedef struct TtyDemuxContext { AVRational framerate; /**< Set by a private option. */ } TtyDemuxContext; +static int read_probe(const AVProbeData *p) +{ + int64_t cnt = 0; + + for (int i = 0; i < p->buf_size; i++) + cnt += !!isalnum(p->buf[i]); + + return cnt * 100 / p->buf_size; +} + /** * Parse EFI header */ @@ -153,6 +165,7 @@ AVInputFormat ff_tty_demuxer = { .name = "tty", .long_name = NULL_IF_CONFIG_SMALL("Tele-typewriter"), .priv_data_size = sizeof(TtyDemuxContext), + .read_probe = read_probe, .read_header = read_header, .read_packet = read_packet, .extensions = "ans,art,asc,diz,ice,nfo,txt,vt",