avcodec/codec_internal: Make FFCodec.decode use AVFrame*

This increases type-safety by avoiding conversions from/through void*.
It also avoids the boilerplate "AVFrame *frame = data;" line
for non-subtitle decoders.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

1 files changed, 2 insertions, 4 deletions

diff --git a/libavcodec/xan.c b/libavcodec/xan.c
index c7916de569..e9f6c334a1 100644
--- a/libavcodec/xan.c
+++ b/libavcodec/xan.c
@@ -538,11 +538,9 @@ static const uint8_t gamma_lookup[256] = {
 };
 #endif
 
-static int xan_decode_frame(AVCodecContext *avctx,
-                            void *data, int *got_frame,
-                            AVPacket *avpkt)
+static int xan_decode_frame(AVCodecContext *avctx, AVFrame *frame,
+                            int *got_frame, AVPacket *avpkt)
 {
-    AVFrame *frame = data;
     const uint8_t *buf = avpkt->data;
     int ret, buf_size = avpkt->size;
     XanContext *s = avctx->priv_data;