[FFmpeg-devel] [PATCH v3] avcodec/libvpxenc: fix potential memory leak.

[Wonkap Jang]

While parsing ref_frame_config, AVdictionary needs to be manually
deallocated.
---
 libavcodec/libvpxenc.c | 19 ++++++++++++-------
 1 file changed, 12 insertions(+), 7 deletions(-)

diff --git a/libavcodec/libvpxenc.c b/libavcodec/libvpxenc.c
index 284cb9a108..b552590b7b 100644
--- a/libavcodec/libvpxenc.c
+++ b/libavcodec/libvpxenc.c
@@ -1595,15 +1595,20 @@ static int vpx_encode(AVCodecContext *avctx, AVPacket *pkt,
             if (en) {
                 if (avctx->codec_id == AV_CODEC_ID_VP9) {
                     AVDictionaryEntry* en2 = NULL;
-                    av_dict_parse_string(&ctx->vpx_ref_frame_config, en->value, "=", ":", 0);
-
-                    while ((en2 = av_dict_get(ctx->vpx_ref_frame_config, "", en2, AV_DICT_IGNORE_SUFFIX))) {
-                        if (vpx_ref_frame_config_parse(ctx, enccfg, en2->key, en2->value, avctx->codec_id) < 0)
-                            av_log(avctx, AV_LOG_WARNING,
-                                   "Error parsing option '%s = %s'.\n",
-                                   en2->key, en2->value);
+                    ctx->vpx_ref_frame_config = NULL;
+
+                    if (av_dict_parse_string(&ctx->vpx_ref_frame_config, en->value, "=", ":", 0) != 0) {
+                        av_log(avctx, AV_LOG_WARNING,
+                           "Error in parsing ref-frame-config. \n");
+                    } else {
+                        while ((en2 = av_dict_get(ctx->vpx_ref_frame_config, "", en2, AV_DICT_IGNORE_SUFFIX))) {
+                            if (vpx_ref_frame_config_parse(ctx, enccfg, en2->key, en2->value, avctx->codec_id) < 0)
+                                av_log(avctx, AV_LOG_WARNING,
+                                      "Error parsing option '%s = %s'.\n",
+                                      en2->key, en2->value);
                     }
 
+                    av_dict_free(&ctx->vpx_ref_frame_config);
                     codecctl_intp(avctx, VP9E_SET_SVC_REF_FRAME_CONFIG, (int *)&ctx->ref_frame_config);
                 } else {
                     av_log(avctx, AV_LOG_WARNING,
-- 
2.30.0.478.g8a0d178c01-goog