Merge remote-tracking branch 'qatar/master'

* qatar/master:
  lavf: pass options from AVFormatContext to avio.
  avformat: Use avio_open2, pass the AVFormatContext interrupt_callback onwards
  avio: add avio_open2, taking an interrupt callback and options
  avio: add support for passing options to protocols.
  avio: add and use ffurl_protocol_next().
  avformat: Pass the interrupt callback on to chained muxers/demuxers
  avio: Add an AVIOInterruptCB parameter to ffurl_open/ffurl_alloc
  avformat: Use ff_check_interrupt
  avio: Add an internal utility function for checking the new interrupt callback
  avio: Add AVIOInterruptCB
  texi2html: remove stray \n
  doc: prettyfy the texi2html documentation
  swscale: handle unaligned buffers in yuv2plane1

Conflicts:
	libavformat/avformat.h
	libavformat/avio.c
	libavformat/mov.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>

1 files changed, 21 insertions, 6 deletions

diff --git a/libavformat/options.c b/libavformat/options.c
index 64bc7a8996..4afb8b52bc 100644
--- a/libavformat/options.c
+++ b/libavformat/options.c
@@ -18,6 +18,7 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 #include "avformat.h"
+#include "avio_internal.h"
 #include "libavutil/opt.h"
 
 /**
@@ -40,6 +41,10 @@ static void *format_child_next(void *obj, void *prev)
         ((s->iformat && s->iformat->priv_class) ||
           s->oformat && s->oformat->priv_class))
         return s->priv_data;
+#if !FF_API_OLD_AVIO
+    if (s->pb && s->pb->av_class && prev != s->pb)
+        return s->pb;
+#endif
     return NULL;
 }
 
@@ -49,19 +54,29 @@ static const AVClass *format_child_class_next(const AVClass *prev)
     AVOutputFormat *ofmt = NULL;
 
     while (prev && (ifmt = av_iformat_next(ifmt)))
-        if (ifmt->priv_class == prev)
+        if (ifmt->priv_class == prev){
+            prev = NULL;
             break;
-    if ((prev && ifmt) || (!prev))
+        }
+    if (!prev)
         while (ifmt = av_iformat_next(ifmt))
             if (ifmt->priv_class)
                 return ifmt->priv_class;
 
     while (prev && (ofmt = av_oformat_next(ofmt)))
-        if (ofmt->priv_class == prev)
+        if (ofmt->priv_class == prev){
+            prev = NULL;
             break;
-    while (ofmt = av_oformat_next(ofmt))
-        if (ofmt->priv_class)
-            return ofmt->priv_class;
+        }
+    if (!prev)
+        while (ofmt = av_oformat_next(ofmt))
+            if (ofmt->priv_class)
+                return ofmt->priv_class;
+
+#if !FF_API_OLD_AVIO
+    if (prev != &ffio_url_class)
+        return &ffio_url_class;
+#endif
 
     return NULL;
 }