lavfi/overlay: yuv444p & yuva444p support

Signed-off-by: Paul B Mahol <onemda@gmail.com>

libavfilter/vf_overlay.c

@@ -134,8 +134,15 @@ static int query_formats(AVFilterContext *ctx)
     OverlayContext *over = ctx->priv;
 
     /* overlay formats contains alpha, for avoiding conversion with alpha information loss */
-    static const enum AVPixelFormat main_pix_fmts_yuv[] = { AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_NONE };
-    static const enum AVPixelFormat overlay_pix_fmts_yuv[] = { AV_PIX_FMT_YUVA420P, AV_PIX_FMT_NONE };
+    static const enum AVPixelFormat main_pix_fmts_yuv[] = {
+        AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVA420P,
+        AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVA444P,
+        AV_PIX_FMT_NONE
+    };
+    static const enum AVPixelFormat overlay_pix_fmts_yuv[] = {
+        AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA444P,
+        AV_PIX_FMT_NONE
+    };
     static const enum AVPixelFormat main_pix_fmts_rgb[] = {
         AV_PIX_FMT_ARGB,  AV_PIX_FMT_RGBA,
         AV_PIX_FMT_ABGR,  AV_PIX_FMT_BGRA,
@@ -167,7 +174,8 @@ static int query_formats(AVFilterContext *ctx)
 }
 
 static const enum AVPixelFormat alpha_pix_fmts[] = {
-    AV_PIX_FMT_YUVA420P, AV_PIX_FMT_ARGB, AV_PIX_FMT_ABGR, AV_PIX_FMT_RGBA,
+    AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA444P,
+    AV_PIX_FMT_ARGB, AV_PIX_FMT_ABGR, AV_PIX_FMT_RGBA,
     AV_PIX_FMT_BGRA, AV_PIX_FMT_NONE
 };