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authorMarton Balint <cus@passwd.hu>2025-07-06 10:14:34 +0200
committerMarton Balint <cus@passwd.hu>2025-07-14 22:05:10 +0200
commitb24155cae11cd13987b3ca286fd4be1df33807fc (patch)
tree63284861dc3d26ac9257da2d24e655cafd56f566
parent71468e85ae720cb63aa9689f0d94e9e9689b9de9 (diff)
downloadffmpeg-b24155cae11cd13987b3ca286fd4be1df33807fc.tar.gz
avfilter/avfilter: add AVFilterGraph->max_buffered_frames to limit buffered frames
Signed-off-by: Marton Balint <cus@passwd.hu>
-rw-r--r--doc/APIchanges3
-rw-r--r--libavfilter/avfilter.h8
-rw-r--r--libavfilter/avfiltergraph.c4
-rw-r--r--libavfilter/version.h4
4 files changed, 17 insertions, 2 deletions
diff --git a/doc/APIchanges b/doc/APIchanges
index 6018da37e1..d6e38245f8 100644
--- a/doc/APIchanges
+++ b/doc/APIchanges
@@ -2,6 +2,9 @@ The last version increases of all libraries were on 2025-03-28
API changes, most recent first:
+2025-07-xx - xxxxxxxxxd - lavfi 11.2.100 - avfilter.h
+ Add AVFilterGraph->max_buffered_frames.
+
2025-07-07 - eca477da52 - lavc 62.6.100 - packet.h
Add AV_PKT_DATA_RTCP_SR.
diff --git a/libavfilter/avfilter.h b/libavfilter/avfilter.h
index f85929dc5c..d2571b1404 100644
--- a/libavfilter/avfilter.h
+++ b/libavfilter/avfilter.h
@@ -629,6 +629,14 @@ typedef struct AVFilterGraph {
avfilter_execute_func *execute;
char *aresample_swr_opts; ///< swr options to use for the auto-inserted aresample filters, Access ONLY through AVOptions
+
+ /**
+ * Sets the maximum number of buffered frames in the filtergraph combined.
+ *
+ * Zero means no limit. This field must be set before calling
+ * avfilter_graph_config().
+ */
+ unsigned max_buffered_frames;
} AVFilterGraph;
/**
diff --git a/libavfilter/avfiltergraph.c b/libavfilter/avfiltergraph.c
index 38b89db22a..86da0b9975 100644
--- a/libavfilter/avfiltergraph.c
+++ b/libavfilter/avfiltergraph.c
@@ -56,6 +56,8 @@ static const AVOption filtergraph_options[] = {
AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, F|V },
{"aresample_swr_opts" , "default aresample filter options" , OFFSET(aresample_swr_opts) ,
AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, F|A },
+ {"max_buffered_frames" , "maximum number of buffered frames allowed", OFFSET(max_buffered_frames),
+ AV_OPT_TYPE_UINT, {.i64 = 0}, 0, UINT_MAX, F|V|A },
{ NULL },
};
@@ -1296,6 +1298,8 @@ int avfilter_graph_config(AVFilterGraph *graphctx, void *log_ctx)
{
int ret;
+ if (graphctx->max_buffered_frames)
+ fffiltergraph(graphctx)->frame_queues.max_queued = graphctx->max_buffered_frames;
if ((ret = graph_check_validity(graphctx, log_ctx)))
return ret;
if ((ret = graph_config_formats(graphctx, log_ctx)))
diff --git a/libavfilter/version.h b/libavfilter/version.h
index 3c1762dd93..bece922c7f 100644
--- a/libavfilter/version.h
+++ b/libavfilter/version.h
@@ -31,8 +31,8 @@
#include "version_major.h"
-#define LIBAVFILTER_VERSION_MINOR 1
-#define LIBAVFILTER_VERSION_MICRO 101
+#define LIBAVFILTER_VERSION_MINOR 2
+#define LIBAVFILTER_VERSION_MICRO 100
#define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \