hls: Add and use a memebr of AVIOInternal rather than abuse opaque

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

libavformat/avio_internal.h

@@ -24,6 +24,11 @@
 
 #include "libavutil/log.h"
 
+typedef struct AVIOInternal {
+    URLContext *h;
+    void *hlsopts;
+} AVIOInternal;
+
 extern const AVClass ff_avio_class;
 
 int ffio_init_context(AVIOContext *s,

libavformat/aviobuf.c

@@ -42,10 +42,6 @@
  */
 #define SHORT_SEEK_THRESHOLD 4096
 
-typedef struct AVIOInternal {
-    URLContext *h;
-} AVIOInternal;
-
 static void *ff_avio_child_next(void *obj, void *prev)
 {
     AVIOContext *s = obj;

libavformat/hls.c

@@ -614,7 +614,8 @@ static int open_url(AVFormatContext *s, AVIOContext **pb, const char *url,
     ret = s->io_open(s, pb, url, AVIO_FLAG_READ, &tmp);
     if (ret >= 0) {
         // update cookies on http response with setcookies.
-        void *u = (s->flags & AVFMT_FLAG_CUSTOM_IO) ? NULL : s->pb->opaque;
+        AVIOInternal *internal = (s->flags & AVFMT_FLAG_CUSTOM_IO) ? NULL : s->pb->opaque;
+        void *u = internal ? internal->hlsopts : NULL;
         update_options(&c->cookies, "cookies", u);
         av_dict_set(&opts, "cookies", c->cookies, 0);
     }
@@ -1496,7 +1497,8 @@ static int nested_io_open(AVFormatContext *s, AVIOContext **pb, const char *url,
 
 static int hls_read_header(AVFormatContext *s)
 {
-    void *u = (s->flags & AVFMT_FLAG_CUSTOM_IO) ? NULL : s->pb->opaque;
+    AVIOInternal *internal = (s->flags & AVFMT_FLAG_CUSTOM_IO) ? NULL : s->pb->opaque;
+    void *u = internal ? internal->hlsopts : NULL;
     HLSContext *c = s->priv_data;
     int ret = 0, i, j, stream_offset = 0;