lavc: Add flag to allow profile mismatch with hardware decoding

doc/APIchanges

@@ -13,6 +13,9 @@ libavutil:     2017-03-23
 
 API changes, most recent first:
 
+2017-04-26 - xxxxxxx - lavc 58.3.1 - avcodec.h
+  Add AV_HWACCEL_FLAG_ALLOW_PROFILE_MISMATCH.
+
 2017-03-xx - xxxxxxx - lavc 57.37.0 - avcodec.h
   Add AVCodecContext.hwaccel_flags field. This will control some hwaccels at
   a later point.

libavcodec/avcodec.h

@@ -3005,6 +3005,20 @@ typedef struct AVHWAccel {
  */
 #define AV_HWACCEL_FLAG_ALLOW_HIGH_DEPTH (1 << 1)
 
+/**
+ * Hardware acceleration should still be attempted for decoding when the
+ * codec profile does not match the reported capabilities of the hardware.
+ *
+ * For example, this can be used to try to decode baseline profile H.264
+ * streams in hardware - it will often succeed, because many streams marked
+ * as baseline profile actually conform to constrained baseline profile.
+ *
+ * @warning If the stream is actually not supported then the behaviour is
+ *          undefined, and may include returning entirely incorrect output
+ *          while indicating success.
+ */
+#define AV_HWACCEL_FLAG_ALLOW_PROFILE_MISMATCH (1 << 2)
+
 /**
  * @}
  */

libavcodec/version.h

@@ -29,7 +29,7 @@
 
 #define LIBAVCODEC_VERSION_MAJOR 58
 #define LIBAVCODEC_VERSION_MINOR  3
-#define LIBAVCODEC_VERSION_MICRO  0
+#define LIBAVCODEC_VERSION_MICRO  1
 
 #define LIBAVCODEC_VERSION_INT  AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
                                                LIBAVCODEC_VERSION_MINOR, \