lavfi: rewrite nullsrc using the code in vsrc_testsrc.c

[ffmpeg] / libavfilter / vsrc_testsrc.c

diff --git a/libavfilter/vsrc_testsrc.c b/libavfilter/vsrc_testsrc.c
index 47b045a1ce008af0f8802bc4f37a096c02795b79..de83facd48aca9524dfba7c006d4f9a1f3dd9195 100644 (file)
--- a/libavfilter/vsrc_testsrc.c
+++ b/libavfilter/vsrc_testsrc.c
@@ -148,6 +148,46 @@ static int request_frame(AVFilterLink *outlink)
     return 0;
 }
 
+#if CONFIG_NULLSRC_FILTER
+
+static const char *nullsrc_get_name(void *ctx)
+{
+    return "nullsrc";
+}
+
+static const AVClass nullsrc_class = {
+    .class_name = "NullSourceContext",
+    .item_name  = nullsrc_get_name,
+    .option     = testsrc_options,
+};
+
+static void nullsrc_fill_picture(AVFilterContext *ctx, AVFilterBufferRef *picref) { }
+
+static av_cold int nullsrc_init(AVFilterContext *ctx, const char *args, void *opaque)
+{
+    TestSourceContext *test = ctx->priv;
+
+    test->class = &nullsrc_class;
+    test->fill_picture_fn = nullsrc_fill_picture;
+    return init(ctx, args, opaque);
+}
+
+AVFilter avfilter_vsrc_nullsrc = {
+    .name        = "nullsrc",
+    .description = NULL_IF_CONFIG_SMALL("Null video source, return unprocessed video frames."),
+    .init       = nullsrc_init,
+    .priv_size  = sizeof(TestSourceContext),
+
+    .inputs    = (AVFilterPad[]) {{ .name = NULL}},
+    .outputs   = (AVFilterPad[]) {{ .name = "default",
+                                    .type = AVMEDIA_TYPE_VIDEO,
+                                    .request_frame = request_frame,
+                                    .config_props  = config_props, },
+                                  { .name = NULL}},
+};
+
+#endif /* CONFIG_NULLSRC_FILTER */
+
 #if CONFIG_TESTSRC_FILTER
 
 static const char *testsrc_get_name(void *ctx)