---
doc/APIchanges | 1 +
libavfilter/af_amix.c | 2 ++
libavfilter/af_channelsplit.c | 2 ++
libavfilter/af_join.c | 2 ++
libavfilter/avfilter.h | 18 ++++++++++++++++++
libavfilter/split.c | 4 ++++
6 files changed, 29 insertions(+)
diff --git a/doc/APIchanges b/doc/APIchanges
index 35c49f6..87a472b 100644
--- a/doc/APIchanges
+++ b/doc/APIchanges
@@ -22,6 +22,7 @@ API changes, most recent first:
filter.
Add avfilter_init_str(), deprecate avfilter_init_filter().
Add avfilter_init_dict().
+ Add AVFilter.flags field and AVFILTER_FLAG_DYNAMIC_{INPUTS,OUTPUTS} flags.
2013-xx-xx - lavfi 3.7.0 - avfilter.h
Add AVFilter.priv_class for exporting filter options through the AVOptions
API
diff --git a/libavfilter/af_amix.c b/libavfilter/af_amix.c
index f7f003b..6bc7458 100644
--- a/libavfilter/af_amix.c
+++ b/libavfilter/af_amix.c
@@ -562,4 +562,6 @@ AVFilter avfilter_af_amix = {
.inputs = NULL,
.outputs = avfilter_af_amix_outputs,
+
+ .flags = AVFILTER_FLAG_DYNAMIC_INPUTS,
};
diff --git a/libavfilter/af_channelsplit.c b/libavfilter/af_channelsplit.c
index fcdc34e..fde5985 100644
--- a/libavfilter/af_channelsplit.c
+++ b/libavfilter/af_channelsplit.c
@@ -149,4 +149,6 @@ AVFilter avfilter_af_channelsplit = {
.inputs = avfilter_af_channelsplit_inputs,
.outputs = NULL,
+
+ .flags = AVFILTER_FLAG_DYNAMIC_OUTPUTS,
};
diff --git a/libavfilter/af_join.c b/libavfilter/af_join.c
index a06812e..02bc8c8 100644
--- a/libavfilter/af_join.c
+++ b/libavfilter/af_join.c
@@ -522,4 +522,6 @@ AVFilter avfilter_af_join = {
.inputs = NULL,
.outputs = avfilter_af_join_outputs,
+
+ .flags = AVFILTER_FLAG_DYNAMIC_INPUTS,
};
diff --git a/libavfilter/avfilter.h b/libavfilter/avfilter.h
index dffb2e5..dd29ec0 100644
--- a/libavfilter/avfilter.h
+++ b/libavfilter/avfilter.h
@@ -373,6 +373,19 @@ const char *avfilter_pad_get_name(const AVFilterPad *pads,
int pad_idx);
enum AVMediaType avfilter_pad_get_type(const AVFilterPad *pads, int pad_idx);
/**
+ * The number of the filter inputs is not determined just by AVFilter.inputs.
+ * The filter might add additional inputs during initialization depending on
the
+ * options supplied to it.
+ */
+#define AVFILTER_FLAG_DYNAMIC_INPUTS (1 << 0)
+/**
+ * The number of the filter outputs is not determined just by AVFilter.outputs.
+ * The filter might add additional outputs during initialization depending on
+ * the options supplied to it.
+ */
+#define AVFILTER_FLAG_DYNAMIC_OUTPUTS (1 << 1)
+
+/**
* Filter definition. This defines the pads a filter contains, and all the
* callback functions used to interact with the filter.
*/
@@ -394,6 +407,11 @@ typedef struct AVFilter {
*/
const AVClass *priv_class;
+ /**
+ * A combination of AVFILTER_FLAG_*
+ */
+ int flags;
+
/*****************************************************************
* All fields below this line are not part of the public API. They
* may not be used outside of libavfilter and can be changed and
diff --git a/libavfilter/split.c b/libavfilter/split.c
index 7e8b4cc..8c03de5 100644
--- a/libavfilter/split.c
+++ b/libavfilter/split.c
@@ -129,6 +129,8 @@ AVFilter avfilter_vf_split = {
.inputs = avfilter_vf_split_inputs,
.outputs = NULL,
+
+ .flags = AVFILTER_FLAG_DYNAMIC_OUTPUTS,
};
static const AVFilterPad avfilter_af_asplit_inputs[] = {
@@ -153,4 +155,6 @@ AVFilter avfilter_af_asplit = {
.inputs = avfilter_af_asplit_inputs,
.outputs = NULL,
+
+ .flags = AVFILTER_FLAG_DYNAMIC_OUTPUTS,
};
--
1.7.10.4
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