add signature filter for MPEG7 video signature

This filter does not implement all features of MPEG7. Missing features:
- compression of signature files
- work only on (cropped) parts of the video

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

1 files changed, 1 insertions, 0 deletions

diff --git a/configure b/configure
index d4cfe1accb..a9ea6986d5 100755
--- a/configure
+++ b/configure
@@ -3139,6 +3139,7 @@ showspectrum_filter_deps="avcodec"
 showspectrum_filter_select="fft"
 showspectrumpic_filter_deps="avcodec"
 showspectrumpic_filter_select="fft"
+signature_filter_deps="gpl avcodec avformat"
 smartblur_filter_deps="gpl swscale"
 sofalizer_filter_deps="netcdf avcodec"
 sofalizer_filter_select="fft"