avauddec/audenc/videnc: Don't return GST_FLOW_EOS when draining

Same behaviour as for avviddec now. FFmpeg will return AVERROR_EOF when it's
completely drained but we should not return that here or otherwise
upstream will receive EOS and not forward us more data.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-libav/-/merge_requests/97>

4 files changed, 26 insertions, 2 deletions

diff --git a/ext/libav/gstavauddec.c b/ext/libav/gstavauddec.c
index ceaee12..91ee8e3 100644
--- a/ext/libav/gstavauddec.c
+++ b/ext/libav/gstavauddec.c
@@ -611,6 +611,14 @@ gst_ffmpegauddec_drain (GstFFMpegAudDec * ffmpegdec)
   } while (got_frame);
   avcodec_flush_buffers (ffmpegdec->context);
 
+  /* FFMpeg will return AVERROR_EOF if it's internal was fully drained
+   * then we are translating it to GST_FLOW_EOS. However, because this behavior
+   * is fully internal stuff of this implementation and gstaudiodecoder
+   * baseclass doesn't convert this GST_FLOW_EOS to GST_FLOW_OK,
+   * convert this flow returned here */
+  if (ret == GST_FLOW_EOS)
+    ret = GST_FLOW_OK;
+
   if (got_any_frames) {
     GstFlowReturn new_ret =
         gst_audio_decoder_finish_frame (GST_AUDIO_DECODER (ffmpegdec), NULL, 1);
diff --git a/ext/libav/gstavaudenc.c b/ext/libav/gstavaudenc.c
index 078ab0b..cfd0300 100644
--- a/ext/libav/gstavaudenc.c
+++ b/ext/libav/gstavaudenc.c
@@ -606,6 +606,14 @@ gst_ffmpegaudenc_drain (GstFFMpegAudEnc * ffmpegaudenc)
 
   avcodec_flush_buffers (ffmpegaudenc->context);
 
+  /* FFMpeg will return AVERROR_EOF if it's internal was fully drained
+   * then we are translating it to GST_FLOW_EOS. However, because this behavior
+   * is fully internal stuff of this implementation and gstaudioencoder
+   * baseclass doesn't convert this GST_FLOW_EOS to GST_FLOW_OK,
+   * convert this flow returned here */
+  if (ret == GST_FLOW_EOS)
+    ret = GST_FLOW_OK;
+
   return ret;
 }
 
diff --git a/ext/libav/gstavviddec.c b/ext/libav/gstavviddec.c
index b21c231..9e57a0b 100644
--- a/ext/libav/gstavviddec.c
+++ b/ext/libav/gstavviddec.c
@@ -1826,9 +1826,9 @@ gst_ffmpegviddec_drain (GstVideoDecoder * decoder)
 
   /* FFMpeg will return AVERROR_EOF if it's internal was fully drained
    * then we are translating it to GST_FLOW_EOS. However, because this behavior
-   * is fullly internal stuff of this implementation and gstvideodecoer
+   * is fully internal stuff of this implementation and gstvideodecoder
    * baseclass doesn't convert this GST_FLOW_EOS to GST_FLOW_OK,
-   * convert this flow retturn by ourselves */
+   * convert this flow returned here */
   if (ret == GST_FLOW_EOS)
     ret = GST_FLOW_OK;
 
diff --git a/ext/libav/gstavvidenc.c b/ext/libav/gstavvidenc.c
index f454de1..ebc1a76 100644
--- a/ext/libav/gstavvidenc.c
+++ b/ext/libav/gstavvidenc.c
@@ -765,6 +765,14 @@ gst_ffmpegvidenc_flush_buffers (GstFFMpegVidEnc * ffmpegenc, gboolean send)
   } while (got_packet);
 
 done:
+  /* FFMpeg will return AVERROR_EOF if it's internal was fully drained
+   * then we are translating it to GST_FLOW_EOS. However, because this behavior
+   * is fully internal stuff of this implementation and gstvideoencoder
+   * baseclass doesn't convert this GST_FLOW_EOS to GST_FLOW_OK,
+   * convert this flow returned here */
+  if (ret == GST_FLOW_EOS)
+    ret = GST_FLOW_OK;
+
   return ret;
 }