avcodec/utils : add ff_int_from_list_or_default func

to check valid value, or return default_value

1 files changed, 12 insertions, 0 deletions

diff --git a/libavcodec/internal.h b/libavcodec/internal.h
index 0c2133f092..f2e6f00ace 100644
--- a/libavcodec/internal.h
+++ b/libavcodec/internal.h
@@ -404,6 +404,18 @@ int ff_alloc_a53_sei(const AVFrame *frame, size_t prefix_len,
  */
 int64_t ff_guess_coded_bitrate(AVCodecContext *avctx);
 
+/**
+ * Check if a value is in the list. If not, return the default value
+ *
+ * @param ctx                Context for the log msg
+ * @param val_name           Name of the checked value, for log msg
+ * @param array_valid_values Array of valid int, ended with INT_MAX
+ * @param default_value      Value return if checked value is not in the array
+ * @return                   Value or default_value.
+ */
+int ff_int_from_list_or_default(void *ctx, const char * val_name, int val,
+                                const int * array_valid_values, int default_value);
+
 #if defined(_WIN32) && CONFIG_SHARED && !defined(BUILDING_avcodec)
 #    define av_export_avcodec __declspec(dllimport)
 #else