lavc: Add hwaccel_flags field to AVCodecContext

This "reuses" the flags introduced for the av_vdpau_bind_context() API
function, and makes them available to all hwaccels. This does not affect
the current vdpau API, as av_vdpau_bind_context() should obviously
override the AVCodecContext.hwaccel_flags flags for the sake of
compatibility.

Cherry-picked from Libav commit 16a163b5.

Reviewed-by: Mark Thompson <sw@jkqxz.net>

1 files changed, 9 insertions, 0 deletions

diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index 3e3c37278a..b3479a7223 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -3620,6 +3620,15 @@ typedef struct AVCodecContext {
      * contexts used must be created on the same device.
      */
     AVBufferRef *hw_device_ctx;
+
+    /**
+     * Bit set of AV_HWACCEL_FLAG_* flags, which affect hardware accelerated
+     * decoding (if active).
+     * - encoding: unused
+     * - decoding: Set by user (either before avcodec_open2(), or in the
+     *             AVCodecContext.get_format callback)
+     */
+    int hwaccel_flags;
 } AVCodecContext;
 
 AVRational av_codec_get_pkt_timebase         (const AVCodecContext *avctx);