Merge commit '443b71928b2f36362e805c037751e6c3c79ea4e8'

[ffmpeg] / libavfilter / vf_idet.c

diff --git a/libavfilter/vf_idet.c b/libavfilter/vf_idet.c
index 56e6e769562205d1484187b399f0af4fa189fe4c..5430aba628fbb5f8113e39a3c381370c98182ae1 100644 (file)
--- a/libavfilter/vf_idet.c
+++ b/libavfilter/vf_idet.c
@@ -34,6 +34,7 @@ static const AVOption idet_options[] = {
     { "prog_thres", "set progressive threshold", OFFSET(progressive_threshold), AV_OPT_TYPE_FLOAT, {.dbl = 1.5},  -1, FLT_MAX, FLAGS },
     { "rep_thres",  "set repeat threshold",      OFFSET(repeat_threshold),      AV_OPT_TYPE_FLOAT, {.dbl = 3.0},  -1, FLT_MAX, FLAGS },
     { "half_life", "half life of cumulative statistics", OFFSET(half_life),     AV_OPT_TYPE_FLOAT, {.dbl = 0.0},  -1, INT_MAX, FLAGS },
+    { "analyze_interlaced_flag", "set number of frames to use to determine if the interlace flag is accurate", OFFSET(analyze_interlaced_flag), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, FLAGS },
     { NULL }
 };
 
@@ -235,8 +236,32 @@ static int filter_frame(AVFilterLink *link, AVFrame *picref)
     AVFilterContext *ctx = link->dst;
     IDETContext *idet = ctx->priv;
 
-    if (idet->prev)
-        av_frame_free(&idet->prev);
+    // initial frame(s) and not interlaced, just pass through for
+    // the analyze_interlaced_flag mode
+    if (idet->analyze_interlaced_flag &&
+        !picref->interlaced_frame &&
+        !idet->next) {
+        return ff_filter_frame(ctx->outputs[0], picref);
+    }
+    if (idet->analyze_interlaced_flag_done) {
+        if (picref->interlaced_frame && idet->interlaced_flag_accuracy < 0)
+            picref->interlaced_frame = 0;
+        return ff_filter_frame(ctx->outputs[0], picref);
+    }
+
+    av_frame_free(&idet->prev);
+
+    if(   picref->width  != link->w
+       || picref->height != link->h
+       || picref->format != link->format) {
+        link->dst->inputs[0]->format = picref->format;
+        link->dst->inputs[0]->w      = picref->width;
+        link->dst->inputs[0]->h      = picref->height;
+
+        av_frame_free(&idet->cur );
+        av_frame_free(&idet->next);
+    }
+
     idet->prev = idet->cur;
     idet->cur  = idet->next;
     idet->next = picref;
@@ -256,7 +281,30 @@ static int filter_frame(AVFilterLink *link, AVFrame *picref)
             ff_idet_init_x86(idet, 1);
     }
 
-    filter(ctx);
+    if (idet->analyze_interlaced_flag) {
+        if (idet->cur->interlaced_frame) {
+            idet->cur->interlaced_frame = 0;
+            filter(ctx);
+            if (idet->last_type == PROGRESSIVE) {
+                idet->interlaced_flag_accuracy --;
+                idet->analyze_interlaced_flag --;
+            } else if (idet->last_type != UNDETERMINED) {
+                idet->interlaced_flag_accuracy ++;
+                idet->analyze_interlaced_flag --;
+            }
+            if (idet->analyze_interlaced_flag == 1) {
+                ff_filter_frame(ctx->outputs[0], av_frame_clone(idet->cur));
+
+                if (idet->next->interlaced_frame && idet->interlaced_flag_accuracy < 0)
+                    idet->next->interlaced_frame = 0;
+                idet->analyze_interlaced_flag_done = 1;
+                av_log(ctx, AV_LOG_INFO, "Final flag accuracy %d\n", idet->interlaced_flag_accuracy);
+                return ff_filter_frame(ctx->outputs[0], av_frame_clone(idet->next));
+            }
+        }
+    } else {
+        filter(ctx);
+    }
 
     return ff_filter_frame(ctx->outputs[0], av_frame_clone(idet->cur));
 }
@@ -274,7 +322,7 @@ static int request_frame(AVFilterLink *link)
 
         ret = ff_request_frame(link->src->inputs[0]);
 
-        if (ret == AVERROR_EOF && idet->cur) {
+        if (ret == AVERROR_EOF && idet->cur && !idet->analyze_interlaced_flag_done) {
             AVFrame *next = av_frame_clone(idet->next);
 
             if (!next)
@@ -293,19 +341,20 @@ static int request_frame(AVFilterLink *link)
 static av_cold void uninit(AVFilterContext *ctx)
 {
     IDETContext *idet = ctx->priv;
+    int level = strncmp(ctx->name, "auto-inserted", 13) ? AV_LOG_INFO : AV_LOG_DEBUG;
 
-    av_log(ctx, AV_LOG_INFO, "Repeated Fields: Neither:%6"PRId64" Top:%6"PRId64" Bottom:%6"PRId64"\n",
+    av_log(ctx, level, "Repeated Fields: Neither:%6"PRId64" Top:%6"PRId64" Bottom:%6"PRId64"\n",
            idet->total_repeats[REPEAT_NONE],
            idet->total_repeats[REPEAT_TOP],
            idet->total_repeats[REPEAT_BOTTOM]
         );
-    av_log(ctx, AV_LOG_INFO, "Single frame detection: TFF:%6"PRId64" BFF:%6"PRId64" Progressive:%6"PRId64" Undetermined:%6"PRId64"\n",
+    av_log(ctx, level, "Single frame detection: TFF:%6"PRId64" BFF:%6"PRId64" Progressive:%6"PRId64" Undetermined:%6"PRId64"\n",
            idet->total_prestat[TFF],
            idet->total_prestat[BFF],
            idet->total_prestat[PROGRESSIVE],
            idet->total_prestat[UNDETERMINED]
         );
-    av_log(ctx, AV_LOG_INFO, "Multi frame detection: TFF:%6"PRId64" BFF:%6"PRId64" Progressive:%6"PRId64" Undetermined:%6"PRId64"\n",
+    av_log(ctx, level, "Multi frame detection: TFF:%6"PRId64" BFF:%6"PRId64" Progressive:%6"PRId64" Undetermined:%6"PRId64"\n",
            idet->total_poststat[TFF],
            idet->total_poststat[BFF],
            idet->total_poststat[PROGRESSIVE],