fftools/ffplay: handle flip in display matrix

Signed-off-by: Zhao Zhili <zhilizhao@tencent.com>
6 months ago · 523189c744
parent 30f090b4f8
commit 523189c744
1 changed files with 9 additions and 4 deletions
--- a/fftools/ffplay.c
+++ b/fftools/ffplay.c
@ -1963,16 +1963,21 @@ static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const c
        theta = get_rotation(displaymatrix);

        if (fabs(theta - 90) < 1.0) {
-            INSERT_FILT("transpose", "clock");
+            INSERT_FILT("transpose", displaymatrix[3] > 0 ? "cclock_flip" : "clock");
        } else if (fabs(theta - 180) < 1.0) {
-            INSERT_FILT("hflip", NULL);
-            INSERT_FILT("vflip", NULL);
+            if (displaymatrix[0] < 0)
+                INSERT_FILT("hflip", NULL);
+            if (displaymatrix[4] < 0)
+                INSERT_FILT("vflip", NULL);
        } else if (fabs(theta - 270) < 1.0) {
-            INSERT_FILT("transpose", "cclock");
+            INSERT_FILT("transpose", displaymatrix[3] < 0 ? "clock_flip" : "cclock");
        } else if (fabs(theta) > 1.0) {
            char rotate_buf[64];
            snprintf(rotate_buf, sizeof(rotate_buf), "%f*PI/180", theta);
            INSERT_FILT("rotate", rotate_buf);
+        } else {
+            if (displaymatrix && displaymatrix[4] < 0)
+                INSERT_FILT("vflip", NULL);
        }
    }