When querying a range of formats of an avdevice, sometimes for a given format
the queried option is not available. This is not an error as the user is asking
for a valid capability, it just doesn't always apply to all the matching
formats of the device. This is now communicated through a special value (like 0
or -1), but that is a problem (like always with special values). The is_set
field alleviates the use of special values. This will be used when implementing
the avdevice capabilities API for avdevice/dshow in a later commit
Signed-off-by: Diederick Niehorster <dcni...@gmail.com>
---
libavutil/opt.c | 1 +
libavutil/opt.h | 5 +++++
libavutil/version.h | 2 +-
3 files changed, 7 insertions(+), 1 deletion(-)
diff --git a/libavutil/opt.c b/libavutil/opt.c
index 4124efd9b6..ab127b30fa 100644
--- a/libavutil/opt.c
+++ b/libavutil/opt.c
@@ -1865,6 +1865,7 @@ int av_opt_query_ranges_default(AVOptionRanges
**ranges_arg, void *obj, const ch
ranges->nb_ranges = 1;
ranges->nb_components = 1;
range->is_range = 1;
+ range->is_set = 1;
range->value_min = field->min;
range->value_max = field->max;
diff --git a/libavutil/opt.h b/libavutil/opt.h
index c2329e5589..ac0b4567a6 100644
--- a/libavutil/opt.h
+++ b/libavutil/opt.h
@@ -325,6 +325,11 @@ typedef struct AVOptionRange {
* If set to 1 the struct encodes a range, if set to 0 a single value.
*/
int is_range;
+ /**
+ * Is set flag.
+ * If set to 1 the struct contains a value, if set to 0, the range is
empty.
+ */
+ int is_set;
} AVOptionRange;
/**
diff --git a/libavutil/version.h b/libavutil/version.h
index e11eaa20d0..34b83112de 100644
--- a/libavutil/version.h
+++ b/libavutil/version.h
@@ -79,7 +79,7 @@
*/
#define LIBAVUTIL_VERSION_MAJOR 57
-#define LIBAVUTIL_VERSION_MINOR 0
+#define LIBAVUTIL_VERSION_MINOR 1
#define LIBAVUTIL_VERSION_MICRO 100
#define LIBAVUTIL_VERSION_INT AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \
--
2.28.0.windows.1
_______________________________________________
ffmpeg-devel mailing list
ffmpeg-devel@ffmpeg.org
https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
To unsubscribe, visit link above, or email
ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
