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[91.20.104.233]) by smtp.gmail.com with ESMTPSA id o63sm7065324wmb.4.2017.12.10.11.30.44 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 10 Dec 2017 11:30:45 -0800 (PST) To: ffmpeg-devel@ffmpeg.org References: <9e2b12db-81f6-d80d-5ed7-8c07e308f9b8@gmail.com> From: Jonathan Baecker Message-ID: <1dc5e901-c4bf-c6b0-5d20-aecc94f4ceea@gmail.com> Date: Sun, 10 Dec 2017 20:30:44 +0100 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.5.0 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US Subject: [FFmpeg-devel] [PATCH v3] libavfilter/vf_blackdetect.c 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 Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" Here the cleanup version from the patch. From b6b6e4ab885f9b35a6696492286e504a4b3d6d92 Mon Sep 17 00:00:00 2001 From: Jonathan Date: Mon, 4 Dec 2017 16:05:48 +0100 Subject: [PATCH] unify blackdetect with af_silencedetect. Is more useful for monitoring streams. --- libavfilter/vf_blackdetect.c | 22 +++++++++++++++------- 1 file changed, 15 insertions(+), 7 deletions(-) -- 2.15.1 diff --git a/libavfilter/vf_blackdetect.c b/libavfilter/vf_blackdetect.c index 06ef9988d..92ea39b33 100644 --- a/libavfilter/vf_blackdetect.c +++ b/libavfilter/vf_blackdetect.c @@ -38,6 +38,7 @@ typedef struct BlackDetectContext { int64_t black_end; ///< pts end time of the last black picture int64_t last_picref_pts; ///< pts of the last input picture int black_started; + int black_match; double picture_black_ratio_th; double pixel_black_th; @@ -107,15 +108,20 @@ static int config_input(AVFilterLink *inlink) return 0; } -static void check_black_end(AVFilterContext *ctx) +static void check_black(AVFilterContext *ctx) { BlackDetectContext *blackdetect = ctx->priv; AVFilterLink *inlink = ctx->inputs[0]; - if ((blackdetect->black_end - blackdetect->black_start) >= blackdetect->black_min_duration) { + if (blackdetect->last_picref_pts - blackdetect->black_start >= blackdetect->black_min_duration && blackdetect->black_match == 0) { av_log(blackdetect, AV_LOG_INFO, - "black_start:%s black_end:%s black_duration:%s\n", - av_ts2timestr(blackdetect->black_start, &inlink->time_base), + "black_start:%s\n", + av_ts2timestr(blackdetect->black_start, &inlink->time_base)); + blackdetect->black_match = 1; + } + if (blackdetect->black_end - blackdetect->black_start >= blackdetect->black_min_duration && blackdetect->black_started == 1) { + av_log(blackdetect, AV_LOG_INFO, + "black_end:%s | black_duration:%s\n", av_ts2timestr(blackdetect->black_end, &inlink->time_base), av_ts2timestr(blackdetect->black_end - blackdetect->black_start, &inlink->time_base)); } @@ -131,7 +137,7 @@ static int request_frame(AVFilterLink *outlink) if (ret == AVERROR_EOF && blackdetect->black_started) { // FIXME: black_end should be set to last_picref_pts + last_picref_duration blackdetect->black_end = blackdetect->last_picref_pts; - check_black_end(ctx); + check_black(ctx); } return ret; } @@ -163,15 +169,17 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *picref) if (!blackdetect->black_started) { /* black starts here */ blackdetect->black_started = 1; + blackdetect->black_match = 0; blackdetect->black_start = picref->pts; av_dict_set(&picref->metadata, "lavfi.black_start", av_ts2timestr(blackdetect->black_start, &inlink->time_base), 0); } + check_black(ctx); } else if (blackdetect->black_started) { /* black ends here */ - blackdetect->black_started = 0; blackdetect->black_end = picref->pts; - check_black_end(ctx); + check_black(ctx); + blackdetect->black_started = 0; av_dict_set(&picref->metadata, "lavfi.black_end", av_ts2timestr(blackdetect->black_end, &inlink->time_base), 0); }