[FFmpeg-devel] [PATCH 3/4] lavfi/buffersrc: add av_buffersrc_close().

[Nicolas George]

TODO APIChanges and minor bump.

Signed-off-by: Nicolas George <george at nsup.org>
---
 libavfilter/buffersrc.c | 22 ++++++++++++----------
 libavfilter/buffersrc.h |  8 ++++++++
 2 files changed, 20 insertions(+), 10 deletions(-)

diff --git a/libavfilter/buffersrc.c b/libavfilter/buffersrc.c
index 3f80d5f413..250b06dfbc 100644
--- a/libavfilter/buffersrc.c
+++ b/libavfilter/buffersrc.c
@@ -196,16 +196,9 @@ static int av_buffersrc_add_frame_internal(AVFilterContext *ctx,
 
     s->nb_failed_requests = 0;
 
-    if (!frame) {
-        s->eof = 1;
-        ff_avfilter_link_set_in_status(ctx->outputs[0], AVERROR_EOF, AV_NOPTS_VALUE);
-        if ((flags & AV_BUFFERSRC_FLAG_PUSH)) {
-            ret = push_frame(ctx->graph);
-            if (ret < 0)
-                return ret;
-        }
-        return 0;
-    } else if (s->eof)
+    if (!frame)
+        return av_buffersrc_close(ctx, AV_NOPTS_VALUE, flags);
+    if (s->eof)
         return AVERROR(EINVAL);
 
     refcounted = !!frame->buf[0];
@@ -267,6 +260,15 @@ static int av_buffersrc_add_frame_internal(AVFilterContext *ctx,
     return 0;
 }
 
+int av_buffersrc_close(AVFilterContext *ctx, int64_t pts, unsigned flags)
+{
+    BufferSourceContext *s = ctx->priv;
+
+    s->eof = 1;
+    ff_avfilter_link_set_in_status(ctx->outputs[0], AVERROR_EOF, pts);
+    return (flags & AV_BUFFERSRC_FLAG_PUSH) ? push_frame(ctx->graph) : 0;
+}
+
 static av_cold int init_video(AVFilterContext *ctx)
 {
     BufferSourceContext *c = ctx->priv;
diff --git a/libavfilter/buffersrc.h b/libavfilter/buffersrc.h
index e42c78196b..0652113f2b 100644
--- a/libavfilter/buffersrc.h
+++ b/libavfilter/buffersrc.h
@@ -193,6 +193,14 @@ av_warn_unused_result
 int av_buffersrc_add_frame_flags(AVFilterContext *buffer_src,
                                  AVFrame *frame, int flags);
 
+/**
+ * Close the buffer source after EOF.
+ *
+ * This is similar to passing NULL to av_buffersrc_add_frame_flags()
+ * except it takes the timestamp of the EOF, i.e. the timestamp of the end
+ * of the last frame.
+ */
+int av_buffersrc_close(AVFilterContext *ctx, int64_t pts, unsigned flags);
 
 /**
  * @}
-- 
2.11.0