[FFmpeg-cvslog] avcodec/mlpenc: stop returning packets with no data

[Paul B Mahol]

ffmpeg | branch: master | Paul B Mahol <onemda at gmail.com> | Sun Sep  5 11:36:50 2021 +0200| [036d94da43d09d3e9c312b7c3f6707212de804df] | committer: Paul B Mahol

avcodec/mlpenc: stop returning packets with no data

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=036d94da43d09d3e9c312b7c3f6707212de804df
---

 libavcodec/mlpenc.c | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/libavcodec/mlpenc.c b/libavcodec/mlpenc.c
index 50662de09c..7db28f518a 100644
--- a/libavcodec/mlpenc.c
+++ b/libavcodec/mlpenc.c
@@ -1178,8 +1178,8 @@ static void write_frame_headers(MLPEncodeContext *ctx, uint8_t *frame_header,
 }
 
 /** Writes an entire access unit to the bitstream. */
-static unsigned int write_access_unit(MLPEncodeContext *ctx, uint8_t *buf,
-                                      int buf_size, int restart_frame)
+static int write_access_unit(MLPEncodeContext *ctx, uint8_t *buf,
+                             int buf_size, int restart_frame)
 {
     uint16_t substream_data_len[MAX_SUBSTREAMS];
     uint8_t *buf1, *buf0 = buf;
@@ -2183,7 +2183,7 @@ static int mlp_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
                             const AVFrame *frame, int *got_packet)
 {
     MLPEncodeContext *ctx = avctx->priv_data;
-    unsigned int bytes_written = 0;
+    int bytes_written = 0;
     int restart_frame, ret;
     uint8_t *data;
 
@@ -2316,8 +2316,14 @@ no_data_left:
     }
     if (!frame)
         avctx->frame_number++;
-    avpkt->size = bytes_written;
-    *got_packet = 1;
+
+    if (bytes_written > 0) {
+        avpkt->size = bytes_written;
+        *got_packet = 1;
+    } else {
+        *got_packet = 0;
+    }
+
     return 0;
 }