[FFmpeg-devel] [PATCH 1/6] avutil/opt: add AV_OPT_FLAG_CHILD_CONSTS

[Marton Balint]

This will be used for AVCodecContext->profile. By specifying constants in the
encoders we won't have to use the common AVCodecContext options table and
different encoders can use the same profile name even with different values.

Signed-off-by: Marton Balint <cus at passwd.hu>
---
 doc/APIchanges      | 3 +++
 libavutil/opt.c     | 3 ++-
 libavutil/opt.h     | 1 +
 libavutil/version.h | 2 +-
 4 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/doc/APIchanges b/doc/APIchanges
index 75cfdb08b0..235888c174 100644
--- a/doc/APIchanges
+++ b/doc/APIchanges
@@ -15,6 +15,9 @@ libavutil:     2017-10-21
 
 API changes, most recent first:
 
+2020-05-xx - xxxxxxxxxx - lavu 56.44.101 - opt.h
+  Add AV_OPT_FLAG_CHILD_CONSTS.
+
 2020-05-10 - xxxxxxxxxx - lavu 56.44.100 - hwcontext_vulkan.h
   Add enabled_inst_extensions, num_enabled_inst_extensions, enabled_dev_extensions
   and num_enabled_dev_extensions fields to AVVulkanDeviceContext
diff --git a/libavutil/opt.c b/libavutil/opt.c
index b792dec01c..423313bce2 100644
--- a/libavutil/opt.c
+++ b/libavutil/opt.c
@@ -256,11 +256,12 @@ static int set_string_number(void *obj, void *target_obj, const AVOption *o, con
         }
 
         {
-            const AVOption *o_named = av_opt_find(target_obj, i ? buf : val, o->unit, 0, 0);
             int res;
             int ci = 0;
             double const_values[64];
             const char * const_names[64];
+            int search_flags = (o->flags & AV_OPT_FLAG_CHILD_CONSTS) ? AV_OPT_SEARCH_CHILDREN : 0;
+            const AVOption *o_named = av_opt_find(target_obj, i ? buf : val, o->unit, 0, search_flags);
             if (o_named && o_named->type == AV_OPT_TYPE_CONST)
                 d = DEFAULT_NUMVAL(o_named);
             else {
diff --git a/libavutil/opt.h b/libavutil/opt.h
index 1969c984dd..e46119572a 100644
--- a/libavutil/opt.h
+++ b/libavutil/opt.h
@@ -291,6 +291,7 @@ typedef struct AVOption {
 #define AV_OPT_FLAG_RUNTIME_PARAM   (1<<15) ///< a generic parameter which can be set by the user at runtime
 #define AV_OPT_FLAG_FILTERING_PARAM (1<<16) ///< a generic parameter which can be set by the user for filtering
 #define AV_OPT_FLAG_DEPRECATED      (1<<17) ///< set if option is deprecated, users should refer to AVOption.help text for more information
+#define AV_OPT_FLAG_CHILD_CONSTS    (1<<18) ///< set if option constants can also reside in child objects
 //FIXME think about enc-audio, ... style flags
 
     /**
diff --git a/libavutil/version.h b/libavutil/version.h
index 48d8a38c42..c4946c1c7e 100644
--- a/libavutil/version.h
+++ b/libavutil/version.h
@@ -80,7 +80,7 @@
 
 #define LIBAVUTIL_VERSION_MAJOR  56
 #define LIBAVUTIL_VERSION_MINOR  44
-#define LIBAVUTIL_VERSION_MICRO 100
+#define LIBAVUTIL_VERSION_MICRO 101
 
 #define LIBAVUTIL_VERSION_INT   AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \
                                                LIBAVUTIL_VERSION_MINOR, \
-- 
2.16.4