Merge commit 'a8c104a511f97e4ea617df73b31737e28a8a5126'

* commit 'a8c104a511f97e4ea617df73b31737e28a8a5126':
  AVOption: add support for dictionary types.

Conflicts:
	libavutil/opt.c
	libavutil/opt.h
	libavutil/version.h

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

doc/APIchanges

@@ -15,6 +15,10 @@ libavutil:     2014-08-09
 
 API changes, most recent first:
 
+2014-xx-xx - xxxxxxx - lavu 54.02.0 - opt.h
+  Add av_opt_get_dict_val/set_dict_val with AV_OPT_TYPE_DICT to support
+  dictionary types being set as options.
+
 2014-xx-xx - xxxxxxx - lavf 56.01.0 - avformat.h
   Add AVFormatContext.event_flags and AVStream.event_flags for signaling to
   the user when events happen in the file/stream.

libavutil/opt.c

@@ -680,6 +680,24 @@ const char *av_get_string(void *obj, const char *name, const AVOption **o_out, c
 }
 #endif
 
+int av_opt_set_dict_val(void *obj, const char *name, const AVDictionary *val, int search_flags)
+{
+    void *target_obj;
+    AVDictionary **dst;
+    const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
+
+    if (!o || !target_obj)
+        return AVERROR_OPTION_NOT_FOUND;
+    if (o->flags & AV_OPT_FLAG_READONLY)
+        return AVERROR(EINVAL);
+
+    dst = (AVDictionary **)(((uint8_t *)target_obj) + o->offset);
+    av_dict_free(dst);
+    av_dict_copy(dst, val, 0);
+
+    return 0;
+}
+
 int av_opt_get(void *obj, const char *name, int search_flags, uint8_t **out_val)
 {
     void *dst, *target_obj;
@@ -927,6 +945,23 @@ int av_opt_get_channel_layout(void *obj, const char *name, int search_flags, int
     return 0;
 }
 
+int av_opt_get_dict_val(void *obj, const char *name, int search_flags, AVDictionary **out_val)
+{
+    void *target_obj;
+    AVDictionary *src;
+    const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
+
+    if (!o || !target_obj)
+        return AVERROR_OPTION_NOT_FOUND;
+    if (o->type != AV_OPT_TYPE_DICT)
+        return AVERROR(EINVAL);
+
+    src = *(AVDictionary **)(((uint8_t *)target_obj) + o->offset);
+    av_dict_copy(out_val, src, 0);
+
+    return 0;
+}
+
 int av_opt_flag_is_set(void *obj, const char *field_name, const char *flag_name)
 {
     const AVOption *field = av_opt_find(obj, field_name, NULL, 0, 0);
@@ -1220,7 +1255,8 @@ void av_opt_set_defaults2(void *s, int mask, int flags)
                     write_number(s, opt, dst, 1, 1, opt->default_val.i64);
                 break;
             case AV_OPT_TYPE_BINARY:
-                /* Cannot set default for binary */
+            case AV_OPT_TYPE_DICT:
+                /* Cannot set defaults for these types */
             break;
             default:
                 av_log(s, AV_LOG_DEBUG, "AVOption type %d of option %s not implemented yet\n", opt->type, opt->name);
@@ -1414,9 +1450,21 @@ int av_opt_set_from_string(void *ctx, const char *opts,
 void av_opt_free(void *obj)
 {
     const AVOption *o = NULL;
-    while ((o = av_opt_next(obj, o)))
+    while ((o = av_opt_next(obj, o))) {
-        if (o->type == AV_OPT_TYPE_STRING || o->type == AV_OPT_TYPE_BINARY)
+        switch (o->type) {
+        case AV_OPT_TYPE_STRING:
+        case AV_OPT_TYPE_BINARY:
             av_freep((uint8_t *)obj + o->offset);
+            break;
+
+        case AV_OPT_TYPE_DICT:
+            av_dict_free((AVDictionary **)(((uint8_t *)obj) + o->offset));
+            break;
+
+        default:
+            break;
+        }
+    }
 }
 
 int av_opt_set_dict2(void *obj, AVDictionary **options, int search_flags)

libavutil/opt.h

@@ -226,6 +226,7 @@ enum AVOptionType{
     AV_OPT_TYPE_STRING,
     AV_OPT_TYPE_RATIONAL,
     AV_OPT_TYPE_BINARY,  ///< offset must point to a pointer immediately followed by an int for the length
+    AV_OPT_TYPE_DICT,
     AV_OPT_TYPE_CONST = 128,
     AV_OPT_TYPE_IMAGE_SIZE = MKBETAG('S','I','Z','E'), ///< offset must point to two consecutive integers
     AV_OPT_TYPE_PIXEL_FMT  = MKBETAG('P','F','M','T'),
@@ -511,7 +512,7 @@ int av_opt_set_from_string(void *ctx, const char *opts,
                            const char *const *shorthand,
                            const char *key_val_sep, const char *pairs_sep);
 /**
- * Free all string and binary options in obj.
+ * Free all allocated objects in obj.
  */
 void av_opt_free(void *obj);
 
@@ -745,6 +746,11 @@ int av_opt_set_pixel_fmt (void *obj, const char *name, enum AVPixelFormat fmt, i
 int av_opt_set_sample_fmt(void *obj, const char *name, enum AVSampleFormat fmt, int search_flags);
 int av_opt_set_video_rate(void *obj, const char *name, AVRational val, int search_flags);
 int av_opt_set_channel_layout(void *obj, const char *name, int64_t ch_layout, int search_flags);
+/**
+ * @note Any old dictionary present is discarded and replaced with a copy of the new one. The
+ * caller still owns val is and responsible for freeing it.
+ */
+int av_opt_set_dict_val(void *obj, const char *name, const AVDictionary *val, int search_flags);
 
 /**
  * Set a binary option to an integer list.
@@ -761,6 +767,7 @@ int av_opt_set_channel_layout(void *obj, const char *name, int64_t ch_layout, in
      AVERROR(EINVAL) : \
      av_opt_set_bin(obj, name, (const uint8_t *)(val), \
                     av_int_list_length(val, term) * sizeof(*(val)), flags))
+
 /**
  * @}
  */
@@ -789,6 +796,11 @@ int av_opt_get_pixel_fmt (void *obj, const char *name, int search_flags, enum AV
 int av_opt_get_sample_fmt(void *obj, const char *name, int search_flags, enum AVSampleFormat *out_fmt);
 int av_opt_get_video_rate(void *obj, const char *name, int search_flags, AVRational *out_val);
 int av_opt_get_channel_layout(void *obj, const char *name, int search_flags, int64_t *ch_layout);
+/**
+ * @param[out] out_val The returned dictionary is a copy of the actual value and must
+ * be freed with av_dict_free() by the caller
+ */
+int av_opt_get_dict_val(void *obj, const char *name, int search_flags, AVDictionary **out_val);
 /**
  * @}
  */

libavutil/version.h

@@ -56,7 +56,7 @@
  */
 
 #define LIBAVUTIL_VERSION_MAJOR  54
-#define LIBAVUTIL_VERSION_MINOR   1
+#define LIBAVUTIL_VERSION_MINOR   2
 #define LIBAVUTIL_VERSION_MICRO 100
 
 #define LIBAVUTIL_VERSION_INT   AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \