lavu/opt: add support for reading pixel and sample format through av_get_int()

Simplify backward compatibility, when switching from AV_OPT_TYPE_INT to
AV_OPT_TYPE_SAMPLE/PIXEL_FMT.

libavutil/opt.c

@@ -71,6 +71,8 @@ static int read_number(const AVOption *o, void *dst, double *num, int *den, int6
 {
     switch (o->type) {
     case AV_OPT_TYPE_FLAGS:     *intnum = *(unsigned int*)dst;return 0;
+    case AV_OPT_TYPE_PIXEL_FMT:
+    case AV_OPT_TYPE_SAMPLE_FMT:
     case AV_OPT_TYPE_INT:       *intnum = *(int         *)dst;return 0;
     case AV_OPT_TYPE_INT64:     *intnum = *(int64_t     *)dst;return 0;
     case AV_OPT_TYPE_FLOAT:     *num    = *(float       *)dst;return 0;

libavutil/version.h

@@ -76,7 +76,7 @@
 
 #define LIBAVUTIL_VERSION_MAJOR  52
 #define LIBAVUTIL_VERSION_MINOR   9
-#define LIBAVUTIL_VERSION_MICRO 101
+#define LIBAVUTIL_VERSION_MICRO 102
 
 #define LIBAVUTIL_VERSION_INT   AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \
                                                LIBAVUTIL_VERSION_MINOR, \