sfan5 <sf...@live.de> 于2021年1月25日周一 下午11:25写道：
>
> This isn't supposed to happen, but unfinished support for non-templated
> manifests and lack of e.g. presentationTimeOffset handling can provoke
> such a situation even with well-formed input.
> ---
> libavformat/dashdec.c | 10 +++++++++-
> 1 file changed, 9 insertions(+), 1 deletion(-)
>
> diff --git a/libavformat/dashdec.c b/libavformat/dashdec.c
> index dc56e89f11..c4e6c3da16 100644
> --- a/libavformat/dashdec.c
> +++ b/libavformat/dashdec.c
> @@ -1625,8 +1625,15 @@ static struct fragment
> *get_current_fragment(struct representation *pls)
> }
> }
> if (seg) {
> - char *tmpfilename= av_mallocz(c->max_url_size);
> + char *tmpfilename;
> + if (!pls->url_template) {
> + av_log(pls->parent, AV_LOG_ERROR, "Cannot get fragment,
> missing template URL\n");
> + av_free(seg);
> + return NULL;
> + }
> + tmpfilename = av_mallocz(c->max_url_size);
> if (!tmpfilename) {
> + av_free(seg);
> return NULL;
> }
> ff_dash_fill_tmpl_params(tmpfilename, c->max_url_size,
> pls->url_template, 0, pls->cur_seq_no, 0,
> get_segment_start_time_based_on_timeline(pls, pls->cur_seq_no));
> @@ -1637,6 +1644,7 @@ static struct fragment
> *get_current_fragment(struct representation *pls)
> if (!seg->url) {
> av_log(pls->parent, AV_LOG_ERROR, "Cannot resolve
> template url '%s'\n", pls->url_template);
> av_free(tmpfilename);
> + av_free(seg);
> return NULL;
> }
> }
> --
> 2.30.0
>
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LGTM
Thanks
Steven
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