Merge remote-tracking branch 'qatar/master'

* qatar/master:
  lavc: add opt_find to AVCodecContext class.
  h264: Complexify frame num gap shortening code
  intreadwrite.h: fix AV_RL32/AV_RB32 signedness.
  Fix decoding of mpegts streams with h264 video that does *NOT* have b frames
  Add minor bumps and APIChanges entries for lavf private options.
  ffmpeg: deprecate -vc and -tvstd
  ffmpeg: use new avformat_open_* API.
  ffserver: use new avformat_open_* API.
  ffprobe: use new avformat_open_* API.
  ffplay: use new avformat_open_* API.
  cmdutils: add opt_default2().
  dict: add AV_DICT_APPEND flag.
  lavf: add avformat_write_header() as a replacement for av_write_header().
  Deprecate av_open_input_* and remove their uses.
  lavf: add avformat_open_input() as a replacement for av_open_input_*
  AVOptions: add av_opt_find() as a replacement for av_find_opt.
  AVOptions: add av_opt_set_dict() mapping a dictionary struct to a context.
  ffmpeg: don't abuse a global for passing frame size from input to output
  ffmpeg: don't abuse a global for passing pixel format from input to output
  ffmpeg: initialise encoders earlier.

Conflicts:
	cmdutils.c
	doc/APIchanges
	ffmpeg.c
	ffplay.c
	ffprobe.c
	libavcodec/h264.c
	libavformat/avformat.h
	libavformat/utils.c
	libavformat/version.h
	libavutil/avutil.h

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

1 files changed, 12 insertions, 1 deletions

diff --git a/libavutil/dict.c b/libavutil/dict.c
index 332eccd679..74301fbf11 100644
--- a/libavutil/dict.c
+++ b/libavutil/dict.c
@@ -19,6 +19,7 @@
  */
 
 #include <strings.h>
+#include "avstring.h"
 #include "dict.h"
 #include "internal.h"
 #include "mem.h"
@@ -51,6 +52,7 @@ int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags
 {
     AVDictionary      *m = *pm;
     AVDictionaryEntry *tag = av_dict_get(m, key, NULL, flags);
+    char *oldval = NULL;
 
     if(!m)
         m = *pm = av_mallocz(sizeof(*m));
@@ -58,7 +60,10 @@ int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags
     if(tag) {
         if (flags & AV_DICT_DONT_OVERWRITE)
             return 0;
-        av_free(tag->value);
+        if (flags & AV_DICT_APPEND)
+            oldval = tag->value;
+        else
+            av_free(tag->value);
         av_free(tag->key);
         *tag = m->elems[--m->count];
     } else {
@@ -75,6 +80,12 @@ int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags
         m->elems[m->count].key  = av_strdup(key  );
         if (flags & AV_DICT_DONT_STRDUP_VAL) {
             m->elems[m->count].value = value;
+        } else if (oldval && flags & AV_DICT_APPEND) {
+            int len = strlen(oldval) + strlen(value) + 1;
+            if (!(oldval = av_realloc(oldval, len)))
+                return AVERROR(ENOMEM);
+            av_strlcat(oldval, value, len);
+            m->elems[m->count].value = oldval;
         } else
             m->elems[m->count].value = av_strdup(value);
         m->count++;