avcodec: add ff_frame_get_metadatap()

This is needed for av_dict_*
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/internal.h

@@ -213,4 +213,6 @@ int ff_codec_close_recursive(AVCodecContext *avctx);
  */
 int avpriv_bprint_to_extradata(AVCodecContext *avctx, struct AVBPrint *buf);
 
+AVDictionary **ff_frame_get_metadatap(AVFrame *frame);
+
 #endif /* AVCODEC_INTERNAL_H */

libavcodec/utils.c

@@ -767,6 +767,8 @@ MAKE_ACCESSORS(AVFrame, frame, AVDictionary *, metadata)
 MAKE_ACCESSORS(AVFrame, frame, int,     decode_error_flags)
 MAKE_ACCESSORS(AVFrame, frame, int,     pkt_size)
 
+AVDictionary **ff_frame_get_metadatap(AVFrame *frame) {return &frame->metadata;};
+
 MAKE_ACCESSORS(AVCodecContext, codec, AVRational, pkt_timebase)
 MAKE_ACCESSORS(AVCodecContext, codec, const AVCodecDescriptor *, codec_descriptor)