lavc: Add flag to allow profile mismatch with hardware decoding

(cherry picked from commit 64a5260c695dd8051509d3270295fd64eac56587)

1 files changed, 14 insertions, 0 deletions

diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index dcdcfe00ae..39be8cf717 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -4002,6 +4002,20 @@ 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)
+
+/**
  * @}
  */