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, 1 insertions, 2 deletions

diff --git a/libavcodec/libgsmdec.c b/libavcodec/libgsmdec.c
index 07fae624ff..88f0a0b3d6 100644
--- a/libavcodec/libgsmdec.c
+++ b/libavcodec/libgsmdec.c
@@ -82,12 +82,11 @@ static av_cold int libgsm_decode_close(AVCodecContext *avctx) {
     return 0;
 }
 
-static int libgsm_decode_frame(AVCodecContext *avctx, void *data,
+static int libgsm_decode_frame(AVCodecContext *avctx, AVFrame *frame,
                                int *got_frame_ptr, AVPacket *avpkt)
 {
     int i, ret;
     LibGSMDecodeContext *s = avctx->priv_data;
-    AVFrame *frame         = data;
     uint8_t *buf = avpkt->data;
     int buf_size = avpkt->size;
     int16_t *samples;