avfilter/vf_psnr: add gray10 and gray12 support

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

libavfilter/vf_psnr.c

@@ -252,7 +252,7 @@ static av_cold int init(AVFilterContext *ctx)
 static int query_formats(AVFilterContext *ctx)
 {
     static const enum AVPixelFormat pix_fmts[] = {
-        AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY16,
+        AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY16,
 #define PF_NOALPHA(suf) AV_PIX_FMT_YUV420##suf,  AV_PIX_FMT_YUV422##suf,  AV_PIX_FMT_YUV444##suf
 #define PF_ALPHA(suf)   AV_PIX_FMT_YUVA420##suf, AV_PIX_FMT_YUVA422##suf, AV_PIX_FMT_YUVA444##suf
 #define PF(suf)         PF_NOALPHA(suf), PF_ALPHA(suf)