Added filter flags

filter.go

@@ -25,6 +25,11 @@ func FindFilterByName(n string) *Filter {
 	return newFilterFromC(C.avfilter_get_by_name(cn))
 }
 
+// https://ffmpeg.org/doxygen/7.0/structAVFilter.html#a632c76418742ad4f4dccbd4db40badd0
+func (f *Filter) Flags() FilterFlags {
+	return FilterFlags(f.c.flags)
+}
+
 // https://ffmpeg.org/doxygen/7.0/structAVFilter.html#a28a4776f344f91055f42a4c2a1b15c0c
 func (f *Filter) Name() string {
 	return C.GoString(f.c.name)

filter_flag.go

@@ -0,0 +1,18 @@
+package astiav
+
+//#include <libavfilter/avfilter.h>
+import "C"
+
+// https://ffmpeg.org/doxygen/7.0/group__lavfi.html#gae6ed6c10a03508829bdf17560e3e10e5
+type FilterFlag int64
+
+const (
+	FilterFlagDynamicInputs           = FilterFlag(C.AVFILTER_FLAG_DYNAMIC_INPUTS)
+	FilterFlagDynamicOutputs          = FilterFlag(C.AVFILTER_FLAG_DYNAMIC_OUTPUTS)
+	FilterFlagSliceThreads            = FilterFlag(C.AVFILTER_FLAG_SLICE_THREADS)
+	FilterFlagMetadataOnly            = FilterFlag(C.AVFILTER_FLAG_METADATA_ONLY)
+	FilterFlagHardwareDevice          = FilterFlag(C.AVFILTER_FLAG_HWDEVICE)
+	FilterFlagSupportTimelineGeneric  = FilterFlag(C.AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC)
+	FilterFlagSupportTimelineInternal = FilterFlag(C.AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL)
+	FilterFlagSupportTimeline         = FilterFlag(C.AVFILTER_FLAG_SUPPORT_TIMELINE)
+)

filter_test.go

@@ -11,4 +11,5 @@ func TestFilter(t *testing.T) {
 	require.NotNil(t, f)
 	require.Equal(t, "format", f.Name())
 	require.Equal(t, "format", f.String())
+	require.True(t, f.Flags().Has(FilterFlagMetadataOnly))
 }

internal/cmd/flags/main.go

@@ -20,6 +20,7 @@ var list = []listItem{
 	{Name: "CodecContext", Suffix: "2"},
 	{Name: "CodecHardwareConfigMethod"},
 	{Name: "Dictionary"},
+	{Name: "Filter"},
 	{Name: "FilterCommand"},
 	{Name: "FormatContext"},
 	{Name: "FormatContextCtx"},