[FFmpeg-cvslog] avformat/hlsenc: improve hls encrypt get key file operation

[Steven Liu]

ffmpeg | branch: master | Steven Liu <lq at chinaffmpeg.org> | Tue Jul 25 10:31:29 2017 +0800| [805ce25b1d2f08ac4a8e9dcdb9657ad5f5e83d9e] | committer: Steven Liu

avformat/hlsenc: improve hls encrypt get key file operation

get key file only once time is ok, no need more times.
Ticket-id: #6545

Found-by: JohnPi
Signed-off-by: Steven Liu <lq at onvideo.cn>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=805ce25b1d2f08ac4a8e9dcdb9657ad5f5e83d9e
---

 libavformat/hlsenc.c | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/libavformat/hlsenc.c b/libavformat/hlsenc.c
index b0625dc9d4..f98f04100c 100644
--- a/libavformat/hlsenc.c
+++ b/libavformat/hlsenc.c
@@ -1223,12 +1223,15 @@ static int hls_start(AVFormatContext *s)
             av_log(s, AV_LOG_WARNING, "Cannot use both -hls_key_info_file and -hls_enc,"
                   " will use -hls_key_info_file priority\n");
         }
-        if (c->key_info_file) {
-            if ((err = hls_encryption_start(s)) < 0)
-                goto fail;
-        } else {
-            if ((err = do_encrypt(s)) < 0)
-                goto fail;
+
+        if (c->number <= 1) {
+            if (c->key_info_file) {
+                if ((err = hls_encryption_start(s)) < 0)
+                    goto fail;
+            } else {
+                if ((err = do_encrypt(s)) < 0)
+                    goto fail;
+            }
         }
         if ((err = av_dict_set(&options, "encryption_key", c->key_string, 0))
                 < 0)